Update Magisk Manager

By the flow of unpacking boot image of Chrome OS there will be no kernel file but an dtb image. In that case the dtb image won’t be added when repacking boot image.

Signed-off-by: Shaka Huang <shakalaca@gmail.com>

.gitmodules

@@ -1,27 +1,27 @@
-[submodule "jni/selinux"]
-	path = core/jni/external/selinux
+[submodule "selinux"]
+	path = native/jni/external/selinux
 	url = https://github.com/topjohnwu/selinux.git
-[submodule "jni/su"]
-	path = core/jni/su
+[submodule "su"]
+	path = native/jni/su
 	url = https://github.com/topjohnwu/MagiskSU.git
-[submodule "jni/magiskpolicy"]
-	path = core/jni/magiskpolicy
+[submodule "magiskpolicy"]
+	path = native/jni/magiskpolicy
 	url = https://github.com/topjohnwu/magiskpolicy.git
 [submodule "MagiskManager"]
 	path = app
 	url = https://github.com/topjohnwu/MagiskManager.git
-[submodule "jni/busybox"]
-	path = core/jni/external/busybox
+[submodule "busybox"]
+	path = native/jni/external/busybox
 	url = https://github.com/topjohnwu/ndk-busybox.git
-[submodule "jni/external/dtc"]
-	path = core/jni/external/dtc
+[submodule "dtc"]
+	path = native/jni/external/dtc
 	url = https://github.com/dgibson/dtc
-[submodule "jni/external/lz4"]
-	path = core/jni/external/lz4
+[submodule "lz4"]
+	path = native/jni/external/lz4
 	url = https://github.com/lz4/lz4.git
-[submodule "jni/external/bzip2"]
-	path = core/jni/external/bzip2
+[submodule "bzip2"]
+	path = native/jni/external/bzip2
 	url = https://github.com/nemequ/bzip2.git
-[submodule "jni/external/xz"]
-	path = core/jni/external/xz
+[submodule "xz"]
+	path = native/jni/external/xz
 	url = https://github.com/xz-mirror/xz.git

README.MD

@@ -6,17 +6,15 @@
 
 ### Environment Requirements
 
-1. A 64-bit machine: `cmake` for Android is only available in 64-bit
-2. Python 3.5+: run `build.py` script
-3. Java Development Kit (JDK) 8: Compile Magisk Manager and sign zips
-4. Latest Android SDK: `ANDROID_HOME` environment variable should point to the Android SDK folder
-5. Android NDK: Install NDK along with SDK (`$ANDROID_HOME/ndk-bundle`), or specify custom path `ANDROID_NDK`
-6. (Windows Only) Python package Colorama: Install with `pip install colorama`, used for ANSI color codes
-7. (Unix only) C compiler: Build `zipadjust`. Windows users can use the pre-built `zipadjust.exe`
+1. Python 3.5+: run `build.py` script
+2. Java Development Kit (JDK) 8: Compile Magisk Manager and sign zips
+3. Latest Android SDK: `ANDROID_HOME` environment variable should point to the Android SDK folder
+4. Android NDK: Install NDK along with SDK (`$ANDROID_HOME/ndk-bundle`), or specify custom path `ANDROID_NDK`
+5. (Windows Only) Python package Colorama: Install with `pip install colorama`, used for ANSI color codes
 
 ### Instructions and Notes
 1. Magisk can be built with the latest NDK (r16 as of writing), however binaries released officially will be built with NDK r10e due to ELF incompatibilities with the binaries built from the newer NDKs.
-2. The easiest way to setup the environment is by importing this folder as an Android Studio project. The IDE will download required components and construct the environment for you. You still have to set the `ANDROID_HOME` environment variable to point to the SDK path.
+2. The easiest way to setup the environment is by importing the folder as an Android Studio project. The IDE will download required components and construct the environment for you. You still have to set the `ANDROID_HOME` environment variable to point to the SDK path.
 3. Run `build.py` with argument `-h` to see the built-in help message. The `-h` option also works for each supported actions, e.g. `./build.py binary -h`
 4. Build everything with `build.py`, don't directly call `gradlew` or `ndk-build`, since most requires special setup / dependencies.
 5. By default, `build.py` will build binaries and Magisk Manager in debug mode. If you want to build Magisk Manager in release mode (through the flag `--release`), you will need to place a Java Keystore file at `release_signature.jks` to sign Magisk Manager's APK. For more information, check out [Google's Official Documentation](https://developer.android.com/studio/publish/app-signing.html#signing-manually).
@@ -43,34 +41,34 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 **MagiskManager** (`app`)
 
-* Copyright 2016-2017, John Wu (@topjohnwu)
+* Copyright 2016-2018, John Wu (@topjohnwu)
 * All contributors and translators on Github
 
-**MagiskSU** (`core/jni/su`)
+**MagiskSU** (`native/jni/su`)
 
-* Copyright 2016-2017, John Wu (@topjohnwu)
+* Copyright 2016-2018, John Wu (@topjohnwu)
 * Copyright 2015, Pierre-Hugues Husson (phh@phh.me)
 * Copyright 2013, Koushik Dutta (@koush)
 * Copyright 2010, Adam Shanks (@ChainsDD)
 * Copyright 2008, Zinx Verituse (@zinxv)
 
-**MagiskPolicy** (`core/jni/magiskpolicy`)
+**MagiskPolicy** (`native/jni/magiskpolicy`)
 
-* Copyright 2016-2017, John Wu (@topjohnwu)
+* Copyright 2016-2018, John Wu (@topjohnwu)
 * Copyright 2015, Pierre-Hugues Husson (phh@phh.me)
 * Copyright 2015, Joshua Brindle (@joshua_brindle)
 
-**MagiskHide** (`core/jni/magiskhide`)
+**MagiskHide** (`native/jni/magiskhide`)
 
-* Copyright 2016-2017, John Wu (@topjohnwu)
+* Copyright 2016-2018, John Wu (@topjohnwu)
 * Copyright 2016, Pierre-Hugues Husson (phh@phh.me)
 
-**resetprop** (`core/jni/resetprop`)
+**resetprop** (`native/jni/resetprop`)
 
- * Copyright 2016-2017 John Wu (@topjohnwu)
+ * Copyright 2016-2018 John Wu (@topjohnwu)
  * Copyright 2016 nkk71 (nkk71x@gmail.com)
 
-**External Dependencies** (`core/jni/external`)
+**External Dependencies** (`native/jni/external`)
 
 * Makefile for busybox, generated by [ndk-busybox-kitchen](https://github.com/topjohnwu/ndk-busybox-kitchen)
 * Each dependencies has its own license/copyright information in each subdirectory.  
@@ -78,4 +76,4 @@ All of them are either GPL or GPL compatible.
 
 **Others Not Mentioned**
 
-* Copyright 2016-2017, John Wu (@topjohnwu)
+* Copyright 2016-2018, John Wu (@topjohnwu)

build.py

@@ -26,13 +26,6 @@ try:
 except FileNotFoundError:
 	error('Please install Java and make sure \'java\' is available in PATH')
 
-# If not Windows, we need gcc to compile
-if os.name != 'nt':
-	try:
-		subprocess.run(['gcc', '-v'], stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
-	except FileNotFoundError:
-		error('Please install C compiler and make sure \'gcc\' is available in PATH')
-
 import argparse
 import multiprocessing
 import zipfile
@@ -89,13 +82,13 @@ def build_binary(args):
 	header('* Building Magisk binaries')
 
 	# Force update logging.h timestamp to trigger recompilation
-	os.utime(os.path.join('core', 'jni', 'include', 'logging.h'))
+	os.utime(os.path.join('native', 'jni', 'include', 'logging.h'))
 
 	debug_flag = '' if args.release else '-DMAGISK_DEBUG'
 	cflag = 'MAGISK_FLAGS=\"-DMAGISK_VERSION=\\\"{}\\\" -DMAGISK_VER_CODE={} {}\"'.format(args.versionString, args.versionCode, debug_flag)
 
 	# Prebuild
-	proc = subprocess.run('{} -C core PRECOMPILE=true {} -j{}'.format(ndk_build, cflag, multiprocessing.cpu_count()), shell=True)
+	proc = subprocess.run('{} -C native PRECOMPILE=true {} -j{}'.format(ndk_build, cflag, multiprocessing.cpu_count()), shell=True)
 	if proc.returncode != 0:
 		error('Build Magisk binary failed!')
 
@@ -104,7 +97,7 @@ def build_binary(args):
 		mkdir_p(os.path.join('out', arch))
 		with open(os.path.join('out', arch, 'dump.h'), 'w') as dump:
 			dump.write('#include "stdlib.h"\n')
-			mv(os.path.join('core', 'libs', arch, 'magisk'), os.path.join('out', arch, 'magisk'))
+			mv(os.path.join('native', 'libs', arch, 'magisk'), os.path.join('out', arch, 'magisk'))
 			with open(os.path.join('out', arch, 'magisk'), 'rb') as bin:
 				dump.write('const uint8_t magisk_dump[] = "')
 				dump.write(''.join("\\x{:02X}".format(c) for c in lzma.compress(bin.read(), preset=9)))
@@ -112,7 +105,7 @@ def build_binary(args):
 
 	print('')
 
-	proc = subprocess.run('{} -C core {} -j{}'.format(ndk_build, cflag, multiprocessing.cpu_count()), shell=True)
+	proc = subprocess.run('{} -C native {} -j{}'.format(ndk_build, cflag, multiprocessing.cpu_count()), shell=True)
 	if proc.returncode != 0:
 		error('Build Magisk binary failed!')
 
@@ -120,18 +113,14 @@ def build_binary(args):
 	for arch in ['arm64-v8a', 'armeabi-v7a', 'x86', 'x86_64']:
 		for binary in ['magiskinit', 'magiskboot', 'b64xz', 'busybox']:
 			try:
-				mv(os.path.join('core', 'libs', arch, binary), os.path.join('out', arch, binary))
+				mv(os.path.join('native', 'libs', arch, binary), os.path.join('out', arch, binary))
 			except:
 				pass
 
 def build_apk(args):
 	header('* Building Magisk Manager')
 
-	for key in ['public.certificate.x509.pem', 'private.key.pk8']:
-		source = os.path.join('ziptools', key)
-		target = os.path.join('app', 'src', 'main', 'assets', key)
-		cp(source, target)
-
+	mkdir(os.path.join('app', 'src', 'main', 'assets'))
 	for script in ['magisk_uninstaller.sh', 'util_functions.sh']:
 		source = os.path.join('scripts', script)
 		target = os.path.join('app', 'src', 'main', 'assets', script)
@@ -331,51 +320,22 @@ def zip_uninstaller(args):
 	sign_adjust_zip(unsigned, output)
 
 def sign_adjust_zip(unsigned, output):
-	signer_name = 'zipsigner-1.1.jar'
-	jarsigner = os.path.join('crypto', 'build', 'libs', signer_name)
+	signer_name = 'zipsigner-2.1.jar'
+	jarsigner = os.path.join('utils', 'build', 'libs', signer_name)
 
-	if os.name != 'nt' and not os.path.exists(os.path.join('ziptools', 'zipadjust')):
-		header('* Building zipadjust')
-		# Compile zipadjust
-		proc = subprocess.run('gcc -o ziptools/zipadjust ziptools/zipadjust_src/*.c -lz', shell=True)
-		if proc.returncode != 0:
-			error('Build zipadjust failed!')
 	if not os.path.exists(jarsigner):
 		header('* Building ' + signer_name)
-		proc = subprocess.run('{} crypto:shadowJar'.format(os.path.join('.', 'gradlew')), shell=True)
+		proc = subprocess.run('{} utils:shadowJar'.format(os.path.join('.', 'gradlew')), shell=True)
 		if proc.returncode != 0:
 			error('Build {} failed!'.format(signer_name))
 
-	header('* Signing / Adjusting Zip')
-
-	publicKey = os.path.join('ziptools', 'public.certificate.x509.pem')
-	privateKey = os.path.join('ziptools', 'private.key.pk8')
+	header('* Signing Zip')
 
 	signed = tempfile.mkstemp()[1]
 
-	# Unsigned->signed
-	proc = subprocess.run(['java', '-jar', jarsigner,
-		publicKey, privateKey, unsigned, signed])
+	proc = subprocess.run(['java', '-jar', jarsigner, unsigned, output])
 	if proc.returncode != 0:
-		error('First sign flashable zip failed!')
-
-	adjusted = tempfile.mkstemp()[1]
-
-	# Adjust zip
-	proc = subprocess.run([os.path.join('ziptools', 'zipadjust'), signed, adjusted])
-	if proc.returncode != 0:
-		error('Adjust flashable zip failed!')
-
-	# Adjusted -> output
-	proc = subprocess.run(['java', '-jar', jarsigner,
-		"-m", publicKey, privateKey, adjusted, output])
-	if proc.returncode != 0:
-		error('Second sign flashable zip failed!')
-
-	# Cleanup
-	rm(unsigned)
-	rm(signed)
-	rm(adjusted)
+		error('Signing zip failed!')
 
 def cleanup(args):
 	if len(args.target) == 0:
@@ -383,14 +343,14 @@ def cleanup(args):
 
 	if 'binary' in args.target:
 		header('* Cleaning binaries')
-		subprocess.run(ndk_build + ' -C core PRECOMPILE=true clean', shell=True)
-		subprocess.run(ndk_build + ' -C core clean', shell=True)
+		subprocess.run(ndk_build + ' -C native PRECOMPILE=true clean', shell=True)
+		subprocess.run(ndk_build + ' -C native clean', shell=True)
 		for arch in ['arm64-v8a', 'armeabi-v7a', 'x86', 'x86_64']:
 			shutil.rmtree(os.path.join('out', arch), ignore_errors=True)
 
 	if 'java' in args.target:
 		header('* Cleaning java')
-		subprocess.run('{} app:clean snet:clean crypto:clean'.format(os.path.join('.', 'gradlew')), shell=True)
+		subprocess.run('{} app:clean snet:clean utils:clean'.format(os.path.join('.', 'gradlew')), shell=True)
 		for f in os.listdir('out'):
 			if '.apk' in f:
 				rm(os.path.join('out', f))

core/jni/core/socket.c

@@ -1,152 +0,0 @@
-/* socket.c - All socket related operations
- */
-
-#include <fcntl.h>
-
-#include "daemon.h"
-#include "logging.h"
-#include "utils.h"
-#include "magisk.h"
-
-/* Setup the address and return socket fd */
-int setup_socket(struct sockaddr_un *sun) {
-    int fd = xsocket(AF_LOCAL, SOCK_STREAM | SOCK_CLOEXEC, 0);
-    memset(sun, 0, sizeof(*sun));
-    sun->sun_family = AF_LOCAL;
-    memcpy(sun->sun_path, REQUESTOR_DAEMON_PATH, sizeof(REQUESTOR_DAEMON_PATH) - 1);
-    return fd;
-}
-
-
-/*
- * Receive a file descriptor from a Unix socket.
- * Contributed by @mkasick
- *
- * Returns the file descriptor on success, or -1 if a file
- * descriptor was not actually included in the message
- *
- * On error the function terminates by calling exit(-1)
- */
-int recv_fd(int sockfd) {
-    // Need to receive data from the message, otherwise don't care about it.
-    char iovbuf;
-
-    struct iovec iov = {
-        .iov_base = &iovbuf,
-        .iov_len  = 1,
-    };
-
-    char cmsgbuf[CMSG_SPACE(sizeof(int))];
-
-    struct msghdr msg = {
-        .msg_iov        = &iov,
-        .msg_iovlen     = 1,
-        .msg_control    = cmsgbuf,
-        .msg_controllen = sizeof(cmsgbuf),
-    };
-
-    xrecvmsg(sockfd, &msg, MSG_WAITALL);
-
-    // Was a control message actually sent?
-    switch (msg.msg_controllen) {
-    case 0:
-        // No, so the file descriptor was closed and won't be used.
-        return -1;
-    case sizeof(cmsgbuf):
-        // Yes, grab the file descriptor from it.
-        break;
-    default:
-        goto error;
-    }
-
-    struct cmsghdr *cmsg = CMSG_FIRSTHDR(&msg);
-
-    if (cmsg             == NULL                  ||
-        cmsg->cmsg_len   != CMSG_LEN(sizeof(int)) ||
-        cmsg->cmsg_level != SOL_SOCKET            ||
-        cmsg->cmsg_type  != SCM_RIGHTS) {
-error:
-        LOGE("unable to read fd");
-        exit(-1);
-    }
-
-    return *(int *)CMSG_DATA(cmsg);
-}
-
-/*
- * Send a file descriptor through a Unix socket.
- * Contributed by @mkasick
- *
- * On error the function terminates by calling exit(-1)
- *
- * fd may be -1, in which case the dummy data is sent,
- * but no control message with the FD is sent.
- */
-void send_fd(int sockfd, int fd) {
-    // Need to send some data in the message, this will do.
-    struct iovec iov = {
-        .iov_base = "",
-        .iov_len  = 1,
-    };
-
-    struct msghdr msg = {
-        .msg_iov        = &iov,
-        .msg_iovlen     = 1,
-    };
-
-    char cmsgbuf[CMSG_SPACE(sizeof(int))];
-
-    if (fd != -1) {
-        // Is the file descriptor actually open?
-        if (fcntl(fd, F_GETFD) == -1) {
-            if (errno != EBADF) {
-                PLOGE("unable to send fd");
-            }
-            // It's closed, don't send a control message or sendmsg will EBADF.
-        } else {
-            // It's open, send the file descriptor in a control message.
-            msg.msg_control    = cmsgbuf;
-            msg.msg_controllen = sizeof(cmsgbuf);
-
-            struct cmsghdr *cmsg = CMSG_FIRSTHDR(&msg);
-
-            cmsg->cmsg_len   = CMSG_LEN(sizeof(int));
-            cmsg->cmsg_level = SOL_SOCKET;
-            cmsg->cmsg_type  = SCM_RIGHTS;
-
-            *(int *)CMSG_DATA(cmsg) = fd;
-        }
-    }
-
-    xsendmsg(sockfd, &msg, 0);
-}
-
-int read_int(int fd) {
-    int val;
-    xxread(fd, &val, sizeof(int));
-    return val;
-}
-
-void write_int(int fd, int val) {
-    if (fd < 0) return;
-    xwrite(fd, &val, sizeof(int));
-}
-
-char* read_string(int fd) {
-    int len = read_int(fd);
-    if (len > PATH_MAX || len < 0) {
-        LOGE("invalid string length %d", len);
-        exit(1);
-    }
-    char* val = xmalloc(sizeof(char) * (len + 1));
-    xxread(fd, val, len);
-    val[len] = '\0';
-    return val;
-}
-
-void write_string(int fd, const char* val) {
-    if (fd < 0) return;
-    int len = strlen(val);
-    write_int(fd, len);
-    xwrite(fd, val, len);
-}

core/jni/external/sha1/sha1.c

@@ -1,295 +0,0 @@
-/*
-SHA-1 in C
-By Steve Reid <steve@edmweb.com>
-100% Public Domain
-
-Test Vectors (from FIPS PUB 180-1)
-"abc"
-  A9993E36 4706816A BA3E2571 7850C26C 9CD0D89D
-"abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq"
-  84983E44 1C3BD26E BAAE4AA1 F95129E5 E54670F1
-A million repetitions of "a"
-  34AA973C D4C4DAA4 F61EEB2B DBAD2731 6534016F
-*/
-
-/* #define LITTLE_ENDIAN * This should be #define'd already, if true. */
-/* #define SHA1HANDSOFF * Copies data before messing with it. */
-
-#define SHA1HANDSOFF
-
-#include <stdio.h>
-#include <string.h>
-
-/* for uint32_t */
-#include <stdint.h>
-
-#include "sha1.h"
-
-
-#define rol(value, bits) (((value) << (bits)) | ((value) >> (32 - (bits))))
-
-/* blk0() and blk() perform the initial expand. */
-/* I got the idea of expanding during the round function from SSLeay */
-#if BYTE_ORDER == LITTLE_ENDIAN
-#define blk0(i) (block->l[i] = (rol(block->l[i],24)&0xFF00FF00) \
-    |(rol(block->l[i],8)&0x00FF00FF))
-#elif BYTE_ORDER == BIG_ENDIAN
-#define blk0(i) block->l[i]
-#else
-#error "Endianness not defined!"
-#endif
-#define blk(i) (block->l[i&15] = rol(block->l[(i+13)&15]^block->l[(i+8)&15] \
-    ^block->l[(i+2)&15]^block->l[i&15],1))
-
-/* (R0+R1), R2, R3, R4 are the different operations used in SHA1 */
-#define R0(v,w,x,y,z,i) z+=((w&(x^y))^y)+blk0(i)+0x5A827999+rol(v,5);w=rol(w,30);
-#define R1(v,w,x,y,z,i) z+=((w&(x^y))^y)+blk(i)+0x5A827999+rol(v,5);w=rol(w,30);
-#define R2(v,w,x,y,z,i) z+=(w^x^y)+blk(i)+0x6ED9EBA1+rol(v,5);w=rol(w,30);
-#define R3(v,w,x,y,z,i) z+=(((w|x)&y)|(w&x))+blk(i)+0x8F1BBCDC+rol(v,5);w=rol(w,30);
-#define R4(v,w,x,y,z,i) z+=(w^x^y)+blk(i)+0xCA62C1D6+rol(v,5);w=rol(w,30);
-
-
-/* Hash a single 512-bit block. This is the core of the algorithm. */
-
-void SHA1Transform(
-    uint32_t state[5],
-    const unsigned char buffer[64]
-)
-{
-    uint32_t a, b, c, d, e;
-
-    typedef union
-    {
-        unsigned char c[64];
-        uint32_t l[16];
-    } CHAR64LONG16;
-
-#ifdef SHA1HANDSOFF
-    CHAR64LONG16 block[1];      /* use array to appear as a pointer */
-
-    memcpy(block, buffer, 64);
-#else
-    /* The following had better never be used because it causes the
-     * pointer-to-const buffer to be cast into a pointer to non-const.
-     * And the result is written through.  I threw a "const" in, hoping
-     * this will cause a diagnostic.
-     */
-    CHAR64LONG16 *block = (const CHAR64LONG16 *) buffer;
-#endif
-    /* Copy context->state[] to working vars */
-    a = state[0];
-    b = state[1];
-    c = state[2];
-    d = state[3];
-    e = state[4];
-    /* 4 rounds of 20 operations each. Loop unrolled. */
-    R0(a, b, c, d, e, 0);
-    R0(e, a, b, c, d, 1);
-    R0(d, e, a, b, c, 2);
-    R0(c, d, e, a, b, 3);
-    R0(b, c, d, e, a, 4);
-    R0(a, b, c, d, e, 5);
-    R0(e, a, b, c, d, 6);
-    R0(d, e, a, b, c, 7);
-    R0(c, d, e, a, b, 8);
-    R0(b, c, d, e, a, 9);
-    R0(a, b, c, d, e, 10);
-    R0(e, a, b, c, d, 11);
-    R0(d, e, a, b, c, 12);
-    R0(c, d, e, a, b, 13);
-    R0(b, c, d, e, a, 14);
-    R0(a, b, c, d, e, 15);
-    R1(e, a, b, c, d, 16);
-    R1(d, e, a, b, c, 17);
-    R1(c, d, e, a, b, 18);
-    R1(b, c, d, e, a, 19);
-    R2(a, b, c, d, e, 20);
-    R2(e, a, b, c, d, 21);
-    R2(d, e, a, b, c, 22);
-    R2(c, d, e, a, b, 23);
-    R2(b, c, d, e, a, 24);
-    R2(a, b, c, d, e, 25);
-    R2(e, a, b, c, d, 26);
-    R2(d, e, a, b, c, 27);
-    R2(c, d, e, a, b, 28);
-    R2(b, c, d, e, a, 29);
-    R2(a, b, c, d, e, 30);
-    R2(e, a, b, c, d, 31);
-    R2(d, e, a, b, c, 32);
-    R2(c, d, e, a, b, 33);
-    R2(b, c, d, e, a, 34);
-    R2(a, b, c, d, e, 35);
-    R2(e, a, b, c, d, 36);
-    R2(d, e, a, b, c, 37);
-    R2(c, d, e, a, b, 38);
-    R2(b, c, d, e, a, 39);
-    R3(a, b, c, d, e, 40);
-    R3(e, a, b, c, d, 41);
-    R3(d, e, a, b, c, 42);
-    R3(c, d, e, a, b, 43);
-    R3(b, c, d, e, a, 44);
-    R3(a, b, c, d, e, 45);
-    R3(e, a, b, c, d, 46);
-    R3(d, e, a, b, c, 47);
-    R3(c, d, e, a, b, 48);
-    R3(b, c, d, e, a, 49);
-    R3(a, b, c, d, e, 50);
-    R3(e, a, b, c, d, 51);
-    R3(d, e, a, b, c, 52);
-    R3(c, d, e, a, b, 53);
-    R3(b, c, d, e, a, 54);
-    R3(a, b, c, d, e, 55);
-    R3(e, a, b, c, d, 56);
-    R3(d, e, a, b, c, 57);
-    R3(c, d, e, a, b, 58);
-    R3(b, c, d, e, a, 59);
-    R4(a, b, c, d, e, 60);
-    R4(e, a, b, c, d, 61);
-    R4(d, e, a, b, c, 62);
-    R4(c, d, e, a, b, 63);
-    R4(b, c, d, e, a, 64);
-    R4(a, b, c, d, e, 65);
-    R4(e, a, b, c, d, 66);
-    R4(d, e, a, b, c, 67);
-    R4(c, d, e, a, b, 68);
-    R4(b, c, d, e, a, 69);
-    R4(a, b, c, d, e, 70);
-    R4(e, a, b, c, d, 71);
-    R4(d, e, a, b, c, 72);
-    R4(c, d, e, a, b, 73);
-    R4(b, c, d, e, a, 74);
-    R4(a, b, c, d, e, 75);
-    R4(e, a, b, c, d, 76);
-    R4(d, e, a, b, c, 77);
-    R4(c, d, e, a, b, 78);
-    R4(b, c, d, e, a, 79);
-    /* Add the working vars back into context.state[] */
-    state[0] += a;
-    state[1] += b;
-    state[2] += c;
-    state[3] += d;
-    state[4] += e;
-    /* Wipe variables */
-    a = b = c = d = e = 0;
-#ifdef SHA1HANDSOFF
-    memset(block, '\0', sizeof(block));
-#endif
-}
-
-
-/* SHA1Init - Initialize new context */
-
-void SHA1Init(
-    SHA1_CTX * context
-)
-{
-    /* SHA1 initialization constants */
-    context->state[0] = 0x67452301;
-    context->state[1] = 0xEFCDAB89;
-    context->state[2] = 0x98BADCFE;
-    context->state[3] = 0x10325476;
-    context->state[4] = 0xC3D2E1F0;
-    context->count[0] = context->count[1] = 0;
-}
-
-
-/* Run your data through this. */
-
-void SHA1Update(
-    SHA1_CTX * context,
-    const unsigned char *data,
-    uint32_t len
-)
-{
-    uint32_t i;
-
-    uint32_t j;
-
-    j = context->count[0];
-    if ((context->count[0] += len << 3) < j)
-        context->count[1]++;
-    context->count[1] += (len >> 29);
-    j = (j >> 3) & 63;
-    if ((j + len) > 63)
-    {
-        memcpy(&context->buffer[j], data, (i = 64 - j));
-        SHA1Transform(context->state, context->buffer);
-        for (; i + 63 < len; i += 64)
-        {
-            SHA1Transform(context->state, &data[i]);
-        }
-        j = 0;
-    }
-    else
-        i = 0;
-    memcpy(&context->buffer[j], &data[i], len - i);
-}
-
-
-/* Add padding and return the message digest. */
-
-void SHA1Final(
-    unsigned char digest[20],
-    SHA1_CTX * context
-)
-{
-    unsigned i;
-
-    unsigned char finalcount[8];
-
-    unsigned char c;
-
-#if 0    /* untested "improvement" by DHR */
-    /* Convert context->count to a sequence of bytes
-     * in finalcount.  Second element first, but
-     * big-endian order within element.
-     * But we do it all backwards.
-     */
-    unsigned char *fcp = &finalcount[8];
-
-    for (i = 0; i < 2; i++)
-    {
-        uint32_t t = context->count[i];
-
-        int j;
-
-        for (j = 0; j < 4; t >>= 8, j++)
-            *--fcp = (unsigned char) t}
-#else
-    for (i = 0; i < 8; i++)
-    {
-        finalcount[i] = (unsigned char) ((context->count[(i >= 4 ? 0 : 1)] >> ((3 - (i & 3)) * 8)) & 255);      /* Endian independent */
-    }
-#endif
-    c = 0200;
-    SHA1Update(context, &c, 1);
-    while ((context->count[0] & 504) != 448)
-    {
-        c = 0000;
-        SHA1Update(context, &c, 1);
-    }
-    SHA1Update(context, finalcount, 8); /* Should cause a SHA1Transform() */
-    for (i = 0; i < 20; i++)
-    {
-        digest[i] = (unsigned char)
-            ((context->state[i >> 2] >> ((3 - (i & 3)) * 8)) & 255);
-    }
-    /* Wipe variables */
-    memset(context, '\0', sizeof(*context));
-    memset(&finalcount, '\0', sizeof(finalcount));
-}
-
-void SHA1(
-    char *hash_out,
-    const char *str,
-    int len)
-{
-    SHA1_CTX ctx;
-    unsigned int ii;
-
-    SHA1Init(&ctx);
-    for (ii=0; ii<len; ii+=1)
-        SHA1Update(&ctx, (const unsigned char*)str + ii, 1);
-    SHA1Final((unsigned char *)hash_out, &ctx);
-    hash_out[20] = '\0';
-}

core/jni/magiskboot/bootimg.c

@@ -1,306 +0,0 @@
-#include <stdlib.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <sys/mman.h>
-
-#include "bootimg.h"
-#include "magiskboot.h"
-#include "utils.h"
-#include "logging.h"
-
-#define INSUF_BLOCK_RET    2
-#define CHROMEOS_RET       3
-#define ELF32_RET          4
-#define ELF64_RET          5
-
-static void dump(void *buf, size_t size, const char *filename) {
-	int fd = creat(filename, 0644);
-	xwrite(fd, buf, size);
-	close(fd);
-}
-
-static size_t restore(const char *filename, int fd) {
-	int ifd = xopen(filename, O_RDONLY);
-	size_t size = lseek(ifd, 0, SEEK_END);
-	lseek(ifd, 0, SEEK_SET);
-	xsendfile(fd, ifd, NULL, size);
-	close(ifd);
-	return size;
-}
-
-static void restore_buf(int fd, const void *buf, size_t size) {
-	xwrite(fd, buf, size);
-}
-
-static void print_hdr(const boot_img_hdr *hdr) {
-	fprintf(stderr, "KERNEL [%d] @ 0x%08x\n", hdr->kernel_size, hdr->kernel_addr);
-	fprintf(stderr, "RAMDISK [%d] @ 0x%08x\n", hdr->ramdisk_size, hdr->ramdisk_addr);
-	fprintf(stderr, "SECOND [%d] @ 0x%08x\n", hdr->second_size, hdr->second_addr);
-	fprintf(stderr, "EXTRA [%d] @ 0x%08x\n", hdr->extra_size, hdr->tags_addr);
-	fprintf(stderr, "PAGESIZE [%d]\n", hdr->page_size);
-	if (hdr->os_version != 0) {
-		int a,b,c,y,m = 0;
-		int os_version, os_patch_level;
-		os_version = hdr->os_version >> 11;
-		os_patch_level = hdr->os_version & 0x7ff;
-
-		a = (os_version >> 14) & 0x7f;
-		b = (os_version >> 7) & 0x7f;
-		c = os_version & 0x7f;
-		fprintf(stderr, "OS_VERSION [%d.%d.%d]\n", a, b, c);
-
-		y = (os_patch_level >> 4) + 2000;
-		m = os_patch_level & 0xf;
-		fprintf(stderr, "PATCH_LEVEL [%d-%02d]\n", y, m);
-	}
-	fprintf(stderr, "NAME [%s]\n", hdr->name);
-	fprintf(stderr, "CMDLINE [%s]\n", hdr->cmdline);
-}
-
-int parse_img(const char *image, boot_img *boot) {
-	memset(boot, 0, sizeof(*boot));
-	int is_blk = mmap_ro(image, &boot->map_addr, &boot->map_size);
-
-	// Parse image
-	fprintf(stderr, "Parsing boot image: [%s]\n", image);
-	for (size_t pos = 0; pos < boot->map_size; pos += 256) {
-		switch (check_type(boot->map_addr + pos)) {
-		case CHROMEOS:
-			// The caller should know it's chromeos, as it needs additional signing
-			boot->flags |= CHROMEOS_FLAG;
-			continue;
-		case ELF32:
-			exit(ELF32_RET);
-		case ELF64:
-			exit(ELF64_RET);
-		case AOSP:
-			// Read the header
-			memcpy(&boot->hdr, boot->map_addr + pos, sizeof(boot->hdr));
-			pos += boot->hdr.page_size;
-
-			print_hdr(&boot->hdr);
-
-			boot->kernel = boot->map_addr + pos;
-			pos += boot->hdr.kernel_size;
-			mem_align(&pos, boot->hdr.page_size);
-
-			boot->ramdisk = boot->map_addr + pos;
-			pos += boot->hdr.ramdisk_size;
-			mem_align(&pos, boot->hdr.page_size);
-
-			if (boot->hdr.second_size) {
-				boot->second = boot->map_addr + pos;
-				pos += boot->hdr.second_size;
-				mem_align(&pos, boot->hdr.page_size);
-			}
-
-			if (boot->hdr.extra_size) {
-				boot->extra = boot->map_addr + pos;
-				pos += boot->hdr.extra_size;
-				mem_align(&pos, boot->hdr.page_size);
-			}
-
-			if (pos < boot->map_size) {
-				boot->tail = boot->map_addr + pos;
-				boot->tail_size = boot->map_size - pos;
-			}
-
-			// Search for dtb in kernel
-			for (uint32_t i = 0; i < boot->hdr.kernel_size; ++i) {
-				if (memcmp(boot->kernel + i, DTB_MAGIC, 4) == 0) {
-					boot->dtb = boot->kernel + i;
-					boot->dt_size = boot->hdr.kernel_size - i;
-					boot->hdr.kernel_size = i;
-					fprintf(stderr, "DTB [%u]\n", boot->dt_size);
-				}
-			}
-
-			boot->ramdisk_type = check_type(boot->ramdisk);
-			boot->kernel_type = check_type(boot->kernel);
-
-			// Check MTK
-			if (boot->kernel_type == MTK) {
-				fprintf(stderr, "MTK_KERNEL_HDR [512]\n");
-				boot->flags |= MTK_KERNEL;
-				memcpy(&boot->mtk_kernel_hdr, boot->kernel, sizeof(mtk_hdr));
-				boot->kernel += 512;
-				boot->hdr.kernel_size -= 512;
-				boot->kernel_type = check_type(boot->kernel);
-			}
-			if (boot->ramdisk_type == MTK) {
-				fprintf(stderr, "MTK_RAMDISK_HDR [512]\n");
-				boot->flags |= MTK_RAMDISK;
-				memcpy(&boot->mtk_ramdisk_hdr, boot->ramdisk, sizeof(mtk_hdr));
-				boot->ramdisk += 512;
-				boot->hdr.ramdisk_size -= 512;
-				boot->ramdisk_type = check_type(boot->ramdisk);
-			}
-
-			char fmt[16];
-
-			get_type_name(boot->kernel_type, fmt);
-			fprintf(stderr, "KERNEL_FMT [%s]\n", fmt);
-			get_type_name(boot->ramdisk_type, fmt);
-			fprintf(stderr, "RAMDISK_FMT [%s]\n", fmt);
-
-			return boot->flags & CHROMEOS_FLAG ? CHROMEOS_RET :
-				   ((is_blk && boot->tail_size < 500 * 1024) ? INSUF_BLOCK_RET : 0);
-		default:
-			continue;
-		}
-	}
-	LOGE("No boot image magic found!\n");
-}
-
-void unpack(const char* image) {
-	boot_img boot;
-	int ret = parse_img(image, &boot);
-	int fd;
-
-	// Dump kernel
-	if (COMPRESSED(boot.kernel_type)) {
-		fd = creat(KERNEL_FILE, 0644);
-		decomp(boot.kernel_type, fd, boot.kernel, boot.hdr.kernel_size);
-		close(fd);
-	} else {
-		dump(boot.kernel, boot.hdr.kernel_size, KERNEL_FILE);
-	}
-
-	if (boot.dt_size) {
-		// Dump dtb
-		dump(boot.dtb, boot.dt_size, DTB_FILE);
-	}
-
-	// Dump ramdisk
-	if (COMPRESSED(boot.ramdisk_type)) {
-		fd = creat(RAMDISK_FILE, 0644);
-		decomp(boot.ramdisk_type, fd, boot.ramdisk, boot.hdr.ramdisk_size);
-		close(fd);
-	} else {
-		dump(boot.ramdisk, boot.hdr.ramdisk_size, RAMDISK_FILE ".raw");
-		LOGE("Unknown ramdisk format! Dumped to %s\n", RAMDISK_FILE ".raw");
-	}
-
-	if (boot.hdr.second_size) {
-		// Dump second
-		dump(boot.second, boot.hdr.second_size, SECOND_FILE);
-	}
-
-	if (boot.hdr.extra_size) {
-		// Dump extra
-		dump(boot.extra, boot.hdr.extra_size, EXTRA_FILE);
-	}
-
-	munmap(boot.map_addr, boot.map_size);
-	exit(ret);
-}
-
-void repack(const char* orig_image, const char* out_image) {
-	boot_img boot;
-
-	// There are possible two MTK headers
-	size_t mtk_kernel_off, mtk_ramdisk_off;
-
-	// Parse original image
-	parse_img(orig_image, &boot);
-
-	fprintf(stderr, "Repack to boot image: [%s]\n", out_image);
-
-	// Create new image
-	int fd = creat(out_image, 0644);
-
-	// Skip a page for header
-	write_zero(fd, boot.hdr.page_size);
-
-	if (boot.flags & MTK_KERNEL) {
-		// Record position and skip MTK header
-		mtk_kernel_off = lseek(fd, 0, SEEK_CUR);
-		write_zero(fd, 512);
-	}
-	if (COMPRESSED(boot.kernel_type)) {
-		size_t raw_size;
-		void *kernel_raw;
-		mmap_ro(KERNEL_FILE, &kernel_raw, &raw_size);
-		boot.hdr.kernel_size = comp(boot.kernel_type, fd, kernel_raw, raw_size);
-		munmap(kernel_raw, raw_size);
-	} else {
-		boot.hdr.kernel_size = restore(KERNEL_FILE, fd);
-	}
-	// Restore dtb
-	if (boot.dt_size && access(DTB_FILE, R_OK) == 0) {
-		boot.hdr.kernel_size += restore(DTB_FILE, fd);
-	}
-	file_align(fd, boot.hdr.page_size, 1);
-
-	if (boot.flags & MTK_RAMDISK) {
-		// Record position and skip MTK header
-		mtk_ramdisk_off = lseek(fd, 0, SEEK_CUR);
-		write_zero(fd, 512);
-	}
-	if (access(RAMDISK_FILE, R_OK) == 0) {
-		// If we found raw cpio, compress to original format
-		size_t cpio_size;
-		void *cpio;
-		mmap_ro(RAMDISK_FILE, &cpio, &cpio_size);
-		boot.hdr.ramdisk_size = comp(boot.ramdisk_type, fd, cpio, cpio_size);
-		munmap(cpio, cpio_size);
-	} else {
-		// Find compressed ramdisk
-		char name[PATH_MAX];
-		int found = 0;
-		for (int i = 0; SUP_EXT_LIST[i]; ++i) {
-			sprintf(name, "%s.%s", RAMDISK_FILE, SUP_EXT_LIST[i]);
-			if (access(name, R_OK) == 0) {
-				found = 1;
-				break;
-			}
-		}
-		if (!found)
-			LOGE("No ramdisk exists!\n");
-		boot.hdr.ramdisk_size = restore(name, fd);
-	}
-	file_align(fd, boot.hdr.page_size, 1);
-
-	// Restore second
-	if (boot.hdr.second_size && access(SECOND_FILE, R_OK) == 0) {
-		boot.hdr.second_size = restore(SECOND_FILE, fd);
-		file_align(fd, boot.hdr.page_size, 1);
-	}
-
-	// Restore extra
-	if (boot.hdr.extra_size && access(EXTRA_FILE, R_OK) == 0) {
-		boot.hdr.extra_size = restore(EXTRA_FILE, fd);
-		file_align(fd, boot.hdr.page_size, 1);
-	}
-
-	// Check tail info, currently only for LG Bump and Samsung SEANDROIDENFORCE
-	if (boot.tail_size >= 16) {
-		if (memcmp(boot.tail, "SEANDROIDENFORCE", 16) == 0 ||
-			memcmp(boot.tail, LG_BUMP_MAGIC, 16) == 0 ) {
-			restore_buf(fd, boot.tail, 16);
-		}
-	}
-
-	// Write MTK headers back
-	if (boot.flags & MTK_KERNEL) {
-		lseek(fd, mtk_kernel_off, SEEK_SET);
-		boot.mtk_kernel_hdr.size = boot.hdr.kernel_size;
-		boot.hdr.kernel_size += 512;
-		restore_buf(fd, &boot.mtk_kernel_hdr, sizeof(mtk_hdr));
-	}
-	if (boot.flags & MTK_RAMDISK) {
-		lseek(fd, mtk_ramdisk_off, SEEK_SET);
-		boot.mtk_ramdisk_hdr.size = boot.hdr.ramdisk_size;
-		boot.hdr.ramdisk_size += 512;
-		restore_buf(fd, &boot.mtk_ramdisk_hdr, sizeof(mtk_hdr));
-	}
-	// Main header
-	lseek(fd, 0, SEEK_SET);
-	restore_buf(fd, &boot.hdr, sizeof(boot.hdr));
-
-	// Print new image info
-	print_hdr(&boot.hdr);
-
-	munmap(boot.map_addr, boot.map_size);
-	close(fd);
-}

core/jni/magiskboot/bootimg.h

@@ -1,127 +0,0 @@
-/* tools/mkbootimg/bootimg.h
-**
-** Copyright 2007, The Android Open Source Project
-**
-** Licensed under the Apache License, Version 2.0 (the "License");
-** you may not use this file except in compliance with the License.
-** You may obtain a copy of the License at
-**
-**     http://www.apache.org/licenses/LICENSE-2.0
-**
-** Unless required by applicable law or agreed to in writing, software
-** distributed under the License is distributed on an "AS IS" BASIS,
-** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-** See the License for the specific language governing permissions and
-** limitations under the License.
-*/
-
-#include <stdint.h>
-#include "types.h"
-
-#ifndef _BOOT_IMAGE_H_
-#define _BOOT_IMAGE_H_
-
-typedef struct boot_img_hdr boot_img_hdr;
-
-#define BOOT_MAGIC "ANDROID!"
-#define BOOT_MAGIC_SIZE 8
-#define BOOT_NAME_SIZE 16
-#define BOOT_ARGS_SIZE 512
-#define BOOT_EXTRA_ARGS_SIZE 1024
-
-struct boot_img_hdr
-{
-    uint8_t magic[BOOT_MAGIC_SIZE];
-
-    uint32_t kernel_size;  /* size in bytes */
-    uint32_t kernel_addr;  /* physical load addr */
-
-    uint32_t ramdisk_size; /* size in bytes */
-    uint32_t ramdisk_addr; /* physical load addr */
-
-    uint32_t second_size;  /* size in bytes */
-    uint32_t second_addr;  /* physical load addr */
-
-    uint32_t tags_addr;    /* physical addr for kernel tags */
-    uint32_t page_size;    /* flash page size we assume */
-    uint32_t extra_size;   /* extra blob size in bytes */
-
-    /* operating system version and security patch level; for
-     * version "A.B.C" and patch level "Y-M-D":
-     * ver = A << 14 | B << 7 | C         (7 bits for each of A, B, C)
-     * lvl = ((Y - 2000) & 127) << 4 | M  (7 bits for Y, 4 bits for M)
-     * os_version = ver << 11 | lvl */
-    uint32_t os_version;
-
-    uint8_t name[BOOT_NAME_SIZE]; /* asciiz product name */
-
-    uint8_t cmdline[BOOT_ARGS_SIZE];
-
-    uint32_t id[8]; /* timestamp / checksum / sha1 / etc */
-
-    /* Supplemental command line data; kept here to maintain
-     * binary compatibility with older versions of mkbootimg */
-    uint8_t extra_cmdline[BOOT_EXTRA_ARGS_SIZE];
-} __attribute__((packed));
-
-/*
-** +-----------------+
-** | boot header     | 1 page
-** +-----------------+
-** | kernel          | n pages
-** +-----------------+
-** | ramdisk         | m pages
-** +-----------------+
-** | second stage    | o pages
-** +-----------------+
-** | extra blobs     | p pages
-** +-----------------+
-**
-** n = (kernel_size + page_size - 1) / page_size
-** m = (ramdisk_size + page_size - 1) / page_size
-** o = (second_size + page_size - 1) / page_size
-** p = (extra_size + page_size - 1) / page_size
-**
-** 0. all entities are page_size aligned in flash
-** 1. kernel and ramdisk are required (size != 0)
-** 2. second is optional (second_size == 0 -> no second)
-** 3. load each element (kernel, ramdisk, second) at
-**    the specified physical address (kernel_addr, etc)
-** 4. prepare tags at tag_addr.  kernel_args[] is
-**    appended to the kernel commandline in the tags.
-** 5. r0 = 0, r1 = MACHINE_TYPE, r2 = tags_addr
-** 6. if second_size != 0: jump to second_addr
-**    else: jump to kernel_addr
-*/
-
-typedef struct mtk_hdr {
-   uint8_t magic[4];    /* MTK magic */
-   uint32_t size;       /* Size of the content */
-   uint8_t name[32];    /* The type of the header */
-} mtk_hdr;
-
-// Flags
-#define MTK_KERNEL    0x1
-#define MTK_RAMDISK   0x2
-#define CHROMEOS_FLAG 0x4
-
-typedef struct boot_img {
-    size_t map_size;
-    uint32_t dt_size;
-    size_t tail_size;
-    uint8_t flags;
-    file_t kernel_type, ramdisk_type;
-
-    boot_img_hdr hdr;
-    mtk_hdr mtk_kernel_hdr, mtk_ramdisk_hdr;
-
-    void *map_addr;
-    void *kernel;
-    void *dtb;
-    void *ramdisk;
-    void *second;
-    void *extra;
-    void *tail;
-} boot_img;
-
-#endif

crypto/src/main/java/com/topjohnwu/crypto/ZipSigner.java

@@ -1,42 +0,0 @@
-package com.topjohnwu.crypto;
-
-import org.bouncycastle.jce.provider.BouncyCastleProvider;
-
-import java.io.File;
-import java.io.FileInputStream;
-import java.io.InputStream;
-import java.security.Security;
-
-public class ZipSigner {
-    public static void main(String[] args) {
-        boolean minSign = false;
-        int argStart = 0;
-
-        if (args.length < 4) {
-            System.err.println("Usage: zipsigner [-m] publickey.x509[.pem] privatekey.pk8 input.jar output.jar");
-            System.exit(2);
-        }
-
-        if (args[0].equals("-m")) {
-            minSign = true;
-            argStart = 1;
-        }
-
-        SignAPK.sBouncyCastleProvider = new BouncyCastleProvider();
-        Security.insertProviderAt(SignAPK.sBouncyCastleProvider, 1);
-
-        File pubKey = new File(args[argStart]);
-        File privKey = new File(args[argStart + 1]);
-        File input = new File(args[argStart + 2]);
-        File output = new File(args[argStart + 3]);
-
-        try (InputStream pub = new FileInputStream(pubKey);
-             InputStream priv = new FileInputStream(privKey);
-             JarMap jar = new JarMap(input, false)) {
-            SignAPK.signZip(pub, priv, jar, output, minSign);
-        } catch (Exception e) {
-            e.printStackTrace();
-            System.exit(1);
-        }
-    }
-}

docs/README.MD

@@ -1,28 +1,36 @@
 # Magisk Documentations
-(Updated on 2017.9.28) ([Changelog](changelog.md))
+(Updated on 2018.1.8) ([Changelog](changelog.md))
 
 ## Table of Contents
 
 - [Introduction](#introduction)
-- [Procedure Diagram](https://cdn.rawgit.com/topjohnwu/Magisk/cc1809688299f1f8b5db494a234850852712c0c9/docs/procedures.html)
-- [Magisk Details](details.md)    
+- [Tips and Tricks](tips.md)
+    - [OTA Installation Tips](tips.md#ota-installation-tips)
+
+The following are for developers
+
+- [Procedure Diagram](https://cdn.rawgit.com/topjohnwu/Magisk/7d1082b1cb91db90ed0a29d8b092723fc3d69c58/docs/procedures.html)
+- [Magisk Details](details.md)
     - [Boot Stages](details.md#boot-stages)
     - [Magic Mount Details](details.md#magic-mount-details)
     - [Simple Mount Details](details.md#simple-mount-details)
-- [Available Applets](applets.md)
-    - [magisk](applets.md#magisk)
-    - [su](applets.md#su)
-    - [resetprop](applets.md#resetprop)
-    - [magiskpolicy](applets.md#magiskpolicy)
-    - [magiskhide](applets.md#magiskhide)
-- [Modules and Repos](module_repo.md)
-    - [Modules and Templates](module_repo.md#magisk-module-format)
-    - [Submit Modules to Repo](module_repo.md#submit-your-module-to-magisk-modules-repo)
+- [Available Tools](tools.md)
+    - [magiskboot](tools.md#magiskboot)
+    - [magiskinit](tools.md#magiskinit)
+    - [magiskpolicy](tools.md#magiskpolicy)
+    - [magisk](tools.md#magisk)
+    - [su](tools.md#su)
+    - [resetprop](tools.md#resetprop)
+    - [magiskhide](tools.md#magiskhide)
+- [Modules](modules.md)
+    - [Modules and Templates](modules.md#magisk-module-format)
+    - [Submit Modules to Repo](https://github.com/topjohnwu/Magisk_Repo_Submissions)
 - [Tips and Tricks](tips.md)
-    - [OTA Installation Tips](tips.md#ota-installation-tips)
     - [Remove Files](tips.md#remove-files)
     - [Remove Folders](tips.md#remove-folders)
 
     
 ## Introduction
-Magisk is a suite of open source tools for devices running Android version higher than 5.0 Lollipop (API 21). It establishes an environment which covers most Android aftermarket customization needs, such as root, boot scripts, SELinux patches, dm-verity/forceencrypt patches etc.. Furthermore, Magisk also provides a **Systemless Interface** to alter the system (or vendor) arbitrarily while the actual partitions stay completely intact, all of which accomplished by only patching the boot image, and adding some files into `/data`. With its systemless nature along with several other hacks, Magisk can hide modifications from device integrity verifications, one of the main target is to hide from [Google's SafetyNet API](https://developer.android.com/training/safetynet/index.html).
+Magisk is a suite of open source tools for devices running Android version higher than 5.0 Lollipop (API 21). It establishes an environment which covers most stuffs you need for Android customization, such as root, boot scripts, SELinux patches, AVB2.0 / dm-verity / forceencrypt patches etc..
+
+Furthermore, Magisk provides a **Systemless Interface** to alter the system (or vendor) arbitrarily while the actual partitions stay completely intact, all of which accomplished by only patching the boot image. With its systemless nature along with several other hacks, Magisk can hide modifications from nearly any existing system integrity verifications, one of the main target is to hide from [Google's SafetyNet API](https://developer.android.com/training/safetynet/index.html).

docs/applets.md

@@ -1,166 +0,0 @@
-## Available Applets
-Magisk has a core binary which acts as a multi-call program with many applets. Here is an introduction to all available applets.
-
-### magisk
-The magisk binary itself provides a lot of utility functions when called with the name `magisk`. They are used in both Magisk installation and module installation. The entry point for `init` to invoke magisk's boot procedures are also listed here.
-
-Command help message:
-
-```
-Usage: magisk [applet [arguments]...]
-   or: magisk [options]...
-
-Options:
-   -c                        print current binary version
-   -v                        print running daemon version
-   -V                        print running daemon version code
-   --list                    list all availible applets
-   --install [SOURCE] DIR    symlink all applets to DIR. SOURCE is optional
-   --createimg IMG SIZE      create ext4 image. SIZE is interpreted in MB
-   --imgsize IMG             report ext4 image used/total size
-   --resizeimg IMG SIZE      resize ext4 image. SIZE is interpreted in MB
-   --mountimg IMG PATH       mount IMG to PATH and prints the loop device
-   --umountimg PATH LOOP     unmount PATH and delete LOOP device
-   --[boot stage]            start boot stage service
-   --unlock-blocks           set BLKROSET flag to OFF for all block devices
-
-Supported boot stages:
-   post-fs, post-fs-data, service
-
-Supported applets:
-    su, resetprop, magiskpolicy, supolicy, magiskhide
-```
-
-### su
-The MagiskSU entrypoint. Call `su` to gain a root shell.
-
-Command help message:
-
-```
-Usage: su [options] [--] [-] [LOGIN] [--] [args...]
-
-Options:
-  -c, --command COMMAND         pass COMMAND to the invoked shell
-  -h, --help                    display this help message and exit
-  -, -l, --login                pretend the shell to be a login shell
-  -m, -p,
-  --preserve-environment        do not change environment variables
-  -s, --shell SHELL             use SHELL instead of the default /system/bin/sh
-  -u                            display the multiuser mode and exit
-  -v, --version                 display version number and exit
-  -V                            display version code and exit,
-                                this is used almost exclusively by Superuser.apk
-  -mm, -M,
-  --mount-master                run in the global mount namespace,
-                                use if you need to publicly apply mounts
-```
-
-Note: even though the `-Z, --context` option is not listed above, it actually still exists. However MagiskSU will silently ignore the option since it's not needed anymore. It is still left over because some apps still request root shell with specific contexts as an option.
-
-### resetprop
-An advanced system prop manipulation utility; you can arbitrarily alter system props using this tool. Here's some background knowledge:
-
-> System props are stored in a hybrid trie/binary tree data structure in memory; it was originally designed to only support adding nodes, and no nodes should be removed. Props can be read by many processes (e.g. via the `getprop` command); however, only the `init` process have write access to the property data. `init` provides a `property_service` to accept property update requests, so all property changes are monitored and controlled by `init` Restrictions such as **read-only** props (props that starts with `ro.`), which can only be set once and cannot be changed afterwards, is therefore implemented in `init`.
-
-**resetprop** acts just like `init`: directly access the data structure, bypassing the whole `property_service` part. Doing so, we gain **arbitrary modification** power, including altering read-only props and deleting properties. Delete properties, which was stated *"forbidden"* in the data structure, is implemented through some tricks in the data structure.
-
-One subtle thing to be aware of is that if we change props by directly modifying the data structure, `on property:foo=bar` triggers registered in `*.rc` scripts will not be triggered properly. This may be a good thing or a bad thing, depending on what behavior you expect. I made the default behavior to match the original setprop command, which **WILL** trigger events, but of course I provide a flag (`-n`) to disable it if you need this special behavior.
-
-Command help message:
-
-```
-Usage: resetprop [options] [args...]
-
-Options:
-   -v      show verbose output
-   -n      only modify property in memory
-
-resetprop  NAME VALUE        set property entry NAME with VALUE
-resetprop  --file FILE       load props from FILE
-resetprop  --delete NAME     remove prop entry NAME
-```
-
-### magiskpolicy
-(This tool is aliased to `supolicy` for compatibility)
-
-A tool to patch `sepolicy`. **magiskpolicy** also comes with built-in rules to unleash restrictions to make Magisk work properly. `sepolicy` is a compiled binary containing SELinux rules; we directly patch rules in the binary format since we don't have access to the SELinux policy source (`*.te`) files.
-
-The Magisk daemon itself, the root shell, and all processes spawned from the daemon and root shell are all running in the context `u:r:su:s0`. This context is not only patched to be permissive, but also patched to allow any transition from `u:r:su:s0` to any domain. This was done because Samsung devices do not support permissive out of the box.
-
-The built in patches are split to 3 parts: minimal, medium, and large. The full patch will result in a huge policy file, which might cause the `sepolicy` file unable to fit in `boot.img`.
-
-- The minimal patch is just enough to start Magisk daemon and allow the daemon to further patch the policy during boot time (which is called **live patch**). It is done at installation and directly into `boot.img`. 
-- The medium patch covers most common operations, and is live patched as soon as Magisk daemon is started (blocking boot process).
-- The large patch contains the full patch. Due to the concern of greatly increasing the boot time, it is designed to run in the background until it's joined in the non-blocking late_start bootstage.
-
-What this all means is that **only late_start service mode is guaranteed to run in a fully patched environment**. If any script is not time critical, it is **highly recommended to run those scripts in late_start service mode**.
-
-Command help message:
-
-```
-Usage: magiskpolicy [--options...] [policystatements...]
-
-Options:
-  --live                directly load patched policy to device
-  --minimal             minimal patches, used for boot image patches
-  --load <infile>       load policies from <infile>
-                        (load from live policies if not specified)
-  --save <outfile>      save policies to <outfile>
-
-One policy statement should be treated as one parameter;
-this means a full policy statement should be enclosed in quotes;
-multiple policy statements can be provided in a single command
-
-The statements has a format of "<action> [args...]"
-Use '*' in args to represent every possible match.
-Collections wrapped in curly brackets can also be used as args.
-
-Supported policy statements:
-
-Type 1:
-"<action> source-class target-class permission-class permission"
-Action: allow, deny, auditallow, auditdeny
-
-Type 2:
-"<action> source-class target-class permission-class ioctl range"
-Action: allowxperm, auditallowxperm, dontauditxperm
-
-Type 3:
-"<action> class"
-Action: create, permissive, enforcing
-
-Type 4:
-"attradd class attribute"
-
-Type 5:
-"typetrans source-class target-class permission-class default-class (optional: object-name)"
-
-Notes:
-- typetrans does not support the all match '*' syntax
-- permission-class cannot be collections
-- source-class and target-class can also be attributes
-
-Example: allow { source1 source2 } { target1 target2 } permission-class *
-Will be expanded to:
-
-allow source1 target1 permission-class { all-permissions }
-allow source1 target2 permission-class { all-permissions }
-allow source2 target1 permission-class { all-permissions }
-allow source2 target2 permission-class { all-permissions }
-```
-
-### magiskhide
-This is the CLI to control the state of MagiskHide.
-
-Command help message: 
-
-```
-Usage: magiskhide [--options [arguments...] ]
-
-Options:
-  --enable          Start magiskhide
-  --disable         Stop magiskhide
-  --add PROCESS     Add PROCESS to the hide list
-  --rm PROCESS      Remove PROCESS from the hide list
-  --ls              Print out the current hide list
-```

docs/changelog.md

@@ -4,3 +4,5 @@
 - 2017.9.28
     - Update applets info to Magisk v14.1
     - Add OTA tips
+- 2017.1.8
+    - Update to Magisk v15.2

docs/details.md

@@ -2,59 +2,58 @@
 If you are working on complicated projects, you shall need more control to the whole process. Magisk can run scripts in different boot stages, so you can fine tune exactly what you want to do. It's recommended to read this documentation along with the procedure graph.
 
 - post-fs mode
-    - **This stage is BLOCKING. Boot process will NOT continue until everything is done, or 20 seconds has passed**
-    - Happens after most partitions are mounted, except `/data`
-    - Magisk will bind mount files under `/cache/magisk_mount/system` to corresponding paths
+    - **This stage is BLOCKING. Boot process will NOT continue until everything is done, or 10 seconds has passed**
+    - Happens after most partitions are mounted. `/data` might not be available since `vold` is not started yet
+    - Magisk will bind mount files under `/cache/magisk_mount/system` and `/cache/magisk_mount/vendor`
     - It is only **Simple Mount**, which means it will replace existing files, but cannot add/remove files.
+    - This part is mostly deprecated (reasons in details)
 - post-fs-data mode
-    - **This stage is BLOCKING. Boot process will NOT continue until everything is done, or 60 seconds has passed**
+    - **This stage is BLOCKING. Boot process will NOT continue until everything is done, or 10 seconds has passed**
     - Happens after `/data` is ready (including the case when `/data` is encrypted)
     - Happens before Zygote and system servers are started (which means pretty much everything)
-    - Mirrors will be mounted. These mirrors play a critical role in **Magic Mount**
-    - `/data/magisk.img` will be merged, trimmed, and mounted to `/magisk`
-    - Magisk will run scripts under `/magisk/.core/post-fs-data.d`
-    - Magisk will run scripts: `/magisk/$MODID/post-fs-data.sh` (placed in each module directory)
+    - `/data/adb/magisk.img` will be merged, trimmed, and mounted to `MOUNTPOINT=/sbin/.core/img`
+    - Magisk will run scripts under `$MOUNTPOINT/.core/post-fs-data.d`
+    - Magisk will run scripts: `$MOUNTPOINT/$MODID/post-fs-data.sh` (placed in each module directory)
     - Magisk will finally **Magisk Mount** module files
 - late_start service mode
     - **This stage is NON-BLOCKING, it will run in parallel with other processes**
-    - Happens when class late_start is started
-    - Put time consuming but non time critical tasks here. Boot process will be stuck if it took too long to finish your tasks in previous modes
-    - SELinux is guaranteed to be fully patched in this stage; **it is recommended to run most scripts in this stage**, unless your scripts require some time critical operations
-    - Magisk will run scripts under `/magisk/.core/service.d`
-    - Magisk will run scripts: `/magisk/$MODID/service.sh` (placed in each module directory)
+    - Happens when class late_start is triggered
+    - The daemon will wait for the full `sepolicy` patch before running this stage, so SELinux is guaranteed to be fully patched
+    - Put time consuming scripts here. Boot process will get stuck if it took too long to finish your tasks in `post-fs-data`
+    - **It is recommended to run all scripts in this stage**, unless your scripts requires doing stuffs before Zygote is started
+    - Magisk will run scripts under `$MOUNTPOINT/.core/service.d`
+    - Magisk will run scripts: `$MOUNTPOINT/$MODID/service.sh` (placed in each module directory)
 
 ## Magic Mount Details
 ### Terminology
 - **Item**: A folder, file, or symbolic link
-- **Leaf**: The very end of a directory structure tree, can be either a file or symbolic link
+- **Leaf**: An item that is on the very end of a directory structure tree. It can be either a file or symbolic link
 - **`$MODPATH`**: A variable to represent the path of a module folder
-- **Source item**: An item under `$MODPATH/system`, for example, `$MODPATH/system/build.prop` is a source item
-- **Existing item**: An item under `/system`, for example, `/system/bin/app_process` is an existing item
-- **Target item**: A corresponding item of a source item. For example, the target item of `$MODPATH/system/build.prop` is `/system/build.prop`
+- **Source item**: An item under `$MODPATH/system`, for example, `$MODPATH/system/bin/app_process32` is a source item
+- **Existing item**: An item in the actual filesystem, for example, `/system/bin/app_process32` is an existing item
+- **Target item**: The corresponding item of a source item. For example, the target item of `$MODPATH/system/bin/app_process32` is `/system/bin/app_process32`
 
-Note: A target item does not imply it is an existing item. A target item might not exist in the actual `/system`
+Note: A target item **does not** imply it is an existing item. A target item might not exist in the actual filesystem
 
 ### Policies
 - For a source leaf: if its target item is also an existing item, the existing item will be replaced with the source leaf
 - For a source leaf: if its target item is not an existing item, the source leaf will be added to the path of its target item
 - For any existing item that's not a target item, it will stay intact
 
-Above is the rule of thumb. Basically it means that Magic Mount merges the files from `$MODPATH/system` into the real `/system`. A simpler way to understand is to think as it dirty copies the contents from `$MODPATH/system` into `/system`.
+Above is the rule of thumb. Basically it means that Magic Mount merges the two folders, `$MODPATH/system` into `/system`. A simpler way to understand is to think as the items is dirty copied from `$MODPATH/system` into `/system`.
 
 However, an addition rule will override the above policies:
 
-- For a source folder containing the file `.replace`, the source folder will be treated as if it is a source leaf. That is, the items within the target folder will be completely discarded, and the target folder will be replaced with the source folder.
+- For a source folder containing the file `.replace`, the source folder will be treated as if it is a leaf. That is, the items within the target folder will be completely discarded, and the target folder will be replaced with the source folder.
 
-Directories containing a file named `.replace` will NOT be merged into the system. It will directly replace the target directory. A simpler way to understand is to think as if it wipes the target folder, and then copies the whole folder to the target path.
+Directories containing a file named `.replace` will **NOT** be merged, instead it directly replaces the target directory. A simpler way to understand is to think as if it wipes the target folder, and then copies the whole folder to the target path.
 
 ### Notes
-- Sometimes, completely replacing a folder is inevitable. For example you want to replace `/system/priv-app/SystemUI` in your stock rom. In stock roms, system apps usually comes with pre-optimized files. If your replacement `SystemUI.apk` is deodexed (which is most likely the case), you would want to replace the whole `/system/priv-app/SystemUI` to make sure the folder only contains the modified `SystemUI.apk` and **NOT** merge with the pre-optimized files.
+- If you want to replace files in `/vendor`, please place it under `$MODPATH/system/vendor`. Magisk will handle both cases, whether the vendor partition is separated or not under-the-hood, developers don't need to bother.
+- Sometimes, completely replacing a folder is inevitable. For example you want to replace `/system/priv-app/SystemUI` in your stock rom. In stock roms, system apps usually comes with pre-optimized files. If your replacement `SystemUI.apk` is deodexed (which is most likely the case), you would want to replace the whole `/system/priv-app/SystemUI` to make sure the folder only contains the modified `SystemUI.apk` without the pre-optimized files.
 - If you are using the [Magisk Module Template](https://github.com/topjohnwu/magisk-module-template), you can create a list of folders you want to replace in the file `config.sh`. The installation scripts will handle the creation of `.replace` files into the listed folders for you.
-- Adding non-existing target items is a relatively expensive operation. Magisk would need to do **MANY** under-the-hood tasks to achieve it. Replacing a whole folder is recommended if viable, it reduces the complexity of the construction of the mounting tree and could speed up the booting time
 
 ## Simple Mount Details
-Some files require to be mounted much earlier in the boot process, currently known are bootanimation and some libs (most users won't change them). You can simply place your modified files into the corresponding path under `/cache/magisk_mount`. At boot time, Magisk will **clone all the attributes from the target file**, which includes selinux context, permission mode, owner, group. It'll then bind mount the file to the target. This means you don't need to worry about the metadatas for files placed under `/cache/magisk_mount`: copy the file to the correct place, reboot then you're done!
+(Note: this part is mostly deprecated, since starting with devices using A/B partitions, there is no longer a dedicated partition for cache because OTAs are applied live at boot. Instead, `/cache` now points to `/data/cache`, which means `post-fs` mode does not have access to `/cache` anymore)
 
-This mode does not feature the same complex Magic Mount implementation, it will mount a source leaf to an existing target item under `/system`.
-
-For example, you want to replace `/system/media/bootanimation.zip`, copy your new boot animation zip to `/cache/magisk_mount/system/media/bootanimation.zip,` Magisk will mount your files in the next reboot.
+Some files require to be mounted much earlier in the boot process, currently known are bootanimation and some libs (most users won't change them). You can simply place your modified files into the corresponding path under `/cache/magisk_mount`. For example, you want to replace `/system/media/bootanimation.zip`, copy your new boot animation zip to `/cache/magisk_mount/system/media/bootanimation.zip`, and Magisk will mount your files in the next reboot. Magisk will **clone all the attributes from the target file**, which includes selinux context, permission mode, owner, group. This means you don't need to worry about the metadata for files placed under `/cache/magisk_mount`: just copy the file to the correct place, reboot then you're done!

docs/module_repo.md

@@ -1,76 +0,0 @@
-# Magisk Modules and Online Repo
-## Magisk Module Format
-The Magisk module is a folder under `magisk`, which has a structure as described below:
-
-```
-magisk
-├── .
-├── .
-├── a_module                <--- The ID of the module, should match with module.prop
-│   ├── auto_mount          <--- If this file exists, auto mount is enabled
-│   ├── disable             <--- If this file exists, the module is disabled
-│   ├── module.prop         <--- This files stores the indentity and properties of the module
-│   ├── post-fs-data.sh     <--- This script will be executed in post-fs-data
-│   ├── remove              <--- If this file exists, the module will be removed next reboot
-│   ├── service.sh          <--- This script will be executed in late_start service
-│   ├── system.prop         <--- This file will be loaded as system props
-│   ├── system              <--- If auto mount is enabled, Magisk will "Magic Mount" this folder
-│   │   ├── app
-│   │   ├── .
-│   │   └── .
-│   ├── vendor              <--- Auto generated. A symlink to $MODID/system/vendor
-│   ├── .                   <--- Any other files/folders are allowed
-│   └── .		
-├── another_module
-│   ├── .
-│   └── .
-├── .
-├── .
-```
-
-## Magisk Module Template
-The **Magisk Module Template** is hosted **[here](https://github.com/topjohnwu/magisk-module-template)**.
-
-It is a template to create a flashable zip to install Magisk Modules. It is created to be simple to use so that anyone can create their own modules easily. The template itself contains minimal scripting for installation; most of the functions are located externally in [util_functions.sh](https://github.com/topjohnwu/Magisk/blob/master/scripts/util_functions.sh), which will be installed along with Magisk, and can be upgraded through a Magisk upgrade without the need of a template update.
-
-The template should meet most modules' needs. Add files into `system`, which will be cloned into `/system` by Magisk after installing the module, and in addition to module files, `system.prop`, `post-fs-data.sh`, `service.sh` are also installable through this template.
-
-Here are some files you would want to know:
-
-- `config.sh`: A simple script used as a configuration file for the actual installation file to correctly install your module. It is the place you can select which features your module needs/disables.
-- `module.prop`: This file contains your module's indentity and properties, including name and versions etc.. This file will be used to identify your module on an actual device and in the [Magisk Modules Repo](https://github.com/Magisk-Modules-Repo)
-- `common/*`: These files will be installed to the module with the correspond role
-- `META-INF/com/google/android/update-binary`: The actual installation script. Modify this file for advanced custom behavior
-
-## Create a Magisk Module With The Template
-1. Clone / download [this repo](https://github.com/topjohnwu/magisk-module-template)
-1. Open `config.sh` and carefully read the fully documented file. Follow the instructions within the script
-1. You should at least have `config.sh` and `module.prop` modified
-1. Directly zip all files; the result zip file is a flashable zip that can be used in both Magisk Manager and custom recoveries
-1. Please check [**Notes**](#notes) for several precautions
-
-## Submit Your Module to Magisk Modules Repo
-If you want to share your module with others, you can submit your modules to [Magisk Modules Repo](https://github.com/Magisk-Modules-Repo). You would need some basic `git` knowledge here.
-
-1. Create a module as stated above, and test if it works properly
-1. Fork [this repo](https://github.com/topjohnwu/magisk-module-template) to your account
-1. Commit and push your changes to your forked repo
-1. Open an issue in [topjohnwu/Magisk_Repo_Central](https://github.com/topjohnwu/Magisk_Repo_Central/issues/new) with your repo link
-1. I will review your module, and once accepted, your repo should be cloned into [Magisk-Modules-Repo](https://github.com/Magisk-Modules-Repo)
-1. You should receive an email to become the collaborator so you can edit the repo in the future.
-
-#### Once your module is live on the Modules Repo, the description of your repo should be the ID of your module. Please do NOT change the description, repeat, do NOT change the description.
-
-![repo_description.png](images/repo_description.png)
-
-## Notes
-- The Module Template depends on external scripts, be aware of the minimal required Magisk version of the template.
-- **Windows users please check here!!** The line endings of all text files should be in the **Unix format**. Please use advanced text editors like Sublime, Atom, Notepad++ etc. to edit **ALL** text files, **NEVER** use Windows Notepad.
-- In `module.prop`, `version` can be an arbitrary string, so any fancy version name (e.g. ultra-beta-v1.1.1.1) is allowed. However, `versionCode` **MUST** be an integer. The value is used for version comparison.
-- Make sure your module ID **does not contain any spaces**.
-
-## Notes For Repo Developers
-
-- Magisk Manager monitors all repo's `master` branch. Any changes to the branch `master` will be reflected to all users immediately. If you are working on an update for a module, please work on another branch, make sure it works, then finally merge the changes back to `master`.
-- Once you finished upgrading your repo, increase at least the `versionCode` in `module.prop`. Magisk Manager uses this value to compare with the local installed module to determine whether an update is availible.
-- The description of your repo should be the same as your module ID. If you changed your description, Magisk Manager will fail to identify your repo, and cannot relate installed module to the online repo together.

docs/modules.md

@@ -0,0 +1,49 @@
+# Magisk Modules
+## Magisk Module Format
+A Magisk module is a folder placed in the root folder in `magisk.img`, which has a structure as described below:
+
+```
+$MOUNTPOINT
+├── .
+├── .
+├── $MODID                  <--- The ID of the module, should match with module.prop
+│   ├── auto_mount          <--- If this file exists, auto mount is enabled
+│   ├── disable             <--- If this file exists, the module is disabled
+│   ├── module.prop         <--- This files stores the identity and properties of the module
+│   ├── post-fs-data.sh     <--- This script will be executed in post-fs-data
+│   ├── remove              <--- If this file exists, the module will be removed next reboot
+│   ├── service.sh          <--- This script will be executed in late_start service
+│   ├── system.prop         <--- This file will be loaded as system props
+│   ├── system              <--- If auto mount is enabled, Magisk will "Magic Mount" this folder
+│   │   ├── .
+│   │   ├── .
+│   │   └── .
+│   ├── vendor              <--- Auto generated. A symlink to $MODID/system/vendor
+│   ├── .                   <--- Any other files/folders are allowed
+│   └── .		
+├── another_module
+│   ├── .
+│   └── .
+├── .
+├── .
+```
+You are not required to use my Magisk Module Template to create a module. As long as you place files with the structure above, it will be recognized as a module.
+
+## Magisk Module Template
+The **Magisk Module Template** is hosted **[here](https://github.com/topjohnwu/magisk-module-template)**.
+
+It is a template to create a flashable zip to install Magisk Modules. It is designed to be simple to use so that anyone can create their own modules easily. The template itself contains minimal scripting for installation; most of the functions are located externally in [util_functions.sh](https://github.com/topjohnwu/Magisk/blob/master/scripts/util_functions.sh), which will be installed along with Magisk, and can be upgraded through a Magisk upgrade without the need of a template update.
+
+Here are some files you would want to know:
+
+- `config.sh`: A simple script used as a configuration file. It is the place to configure which features your module needs/disables. A detailed instructions on how to use the template is also written in this file.
+- `module.prop`: This file contains your module's indentity and properties, including name and versions etc.. This file will be used to identify your module on an actual device and in the [Magisk Modules Repo](https://github.com/Magisk-Modules-Repo)
+- `common/*`: Boot stage scripts and `system.prop`
+- `META-INF/com/google/android/update-binary`: The actual installation script. Modify this file for advanced custom behavior
+
+And here are some notes to be aware of:
+
+- The template depends on external Magisk scripts, please specify the correct `minMagisk` value in `module.prop` with the template version your module is based on, or the minimum Magisk version your module is tested on.
+- **Windows users please check here!!** The line endings of all text files should be in the **Unix format**. Please use advanced text editors like Sublime, Atom, Notepad++ etc. to edit **ALL** text files, **NEVER** use Windows Notepad.
+- In `module.prop`, `version` can be an arbitrary string, so any fancy version name (e.g. `ultra-beta-v1.1.1.1`) is allowed. However, `versionCode` **MUST** be an integer. The value is used for version comparison.
+- Make sure your module ID **does not contain any spaces**.

docs/tips.md

@@ -10,8 +10,8 @@ Magisk do modifications systemless-ly, which means applying official OTAs is muc
 #### Prerequisites
 1. Please disable *Automatic system updates* in developer options, so it won't install OTAs without your acknowledgement.  
     <img src="images/disable_auto_ota.png" width="250">
-1. When an OTA is available, please go to Magisk Manager → Uninstall → Restore Stock Boot. **Do not reboot immediately or you will have Magisk uninstalled.** This will restore your boot back to 100% untouched stock boot image in order to pass boot verification. **This step is required before doing any of the following steps written below!**  
-    <img src="images/restore_boot.png" width="250">
+1. When an OTA is available, please go to Magisk Manager → Uninstall → Restore Images. **Do not reboot immediately or you will have Magisk uninstalled.** This will restore your boot (or dtbo if available) back to 100% untouched stock images in order to pass verifications. **This step is required before doing any of the following steps written below!**  
+    <img src="images/restore_img.png" width="250">
 
 #### Devices with A/B Partitions
 (Includes Pixel family)
@@ -36,7 +36,7 @@ The [FlashFire](https://play.google.com/store/apps/details?id=eu.chainfire.flash
 1. Press the big **Flash** button, after a few minutes it should reboot updated with Magisk installed.
 
 #### Other Devices - General Case
-Unfortunately, there are no real good ways to apply OTAs on all devices. Also, the tutorial provided below will not preserve Magisk - you will have to manually re-root your device after the upgrade, and this will require PC access. Here I share my personal experience with my daily driver - HTC U11.
+Unfortunately, there are no real good ways to apply OTAs on all devices. Also, the tutorial provided below will not preserve Magisk - you will have to manually re-root your device after the upgrade, and this will require PC access. Here I share my personal experience with HTC U11.
 
 1. To properly install OTAs, you should have your stock recovery installed on your device. If you have custom recovery installed, you can restore it from your previous backup, or dumps found online, or factory images provided by OEMs.  
 If you decide to start by installing Magisk without touching your recovery partition, you have a few choices, either way you will end up with a Magisk rooted device, but recovery remain stock untouched:
@@ -47,7 +47,7 @@ If you decide to start by installing Magisk without touching your recovery parti
 1. Once it's done you will be left with an upgraded, 100% stock, un-rooted device. You will have to manually flash Magisk back. Consider using the methods stated in step 1. to flash Magisk without touching the recovery partition if you want to receive stock OTAs frequently.
 
 ## Remove Files
-How to efficiently remove a file systemless-ly? To actually make the file **disappear** is complicated (possible, not worth the effort). **Replacing it with a dummy file should be good enough**! Create an empty file with the same name and place it in the same path within a module, it shall replace your target file with a dummy file.
+How to remove a file systemless-ly? To actually make the file **disappear** is complicated (possible, not worth the effort). **Replacing it with a dummy file should be good enough**! Create an empty file with the same name and place it in the same path within a module, it shall replace your target file with a dummy file.
 
 ## Remove Folders
 Same as mentioned above, actually making the folder to **disappear** is not worth the effort. **Replacing it with an empty folder should be good enough**! A handy trick for module developers using [Magisk Module Template](https://github.com/topjohnwu/magisk-module-template) is to add the folder you want to remove into the `REPLACE` list within `config.sh`. If your module doesn't provide a correspond folder, it will create an empty folder, and automatically add `.replace` into the empty folder so the dummy folder will properly replace the one in `/system`.

docs/tools.md

@@ -0,0 +1,287 @@
+## Available Tools
+Magisk comes with a lot of tools for installation, programs running as a daemon, and utilities for developers. This documentation covers 3 binaries, and many more tools are available as applets. The relation between tools are shown below:
+
+```
+magiskboot                 /* binary */
+magiskinit                 /* binary */
+magiskpolicy -> magiskinit
+supolicy -> magiskinit     /* alias of magiskpolicy */
+magisk                     /* binary */
+magiskhide -> magisk
+resetprop -> magisk
+su -> magisk
+```
+
+### magiskboot
+A tool to unpack / repack boot images, parse and patch cpio and dtbs, hex patch binaries, compress / decompress with multiple algorithms. It is used to install Magisk into boot images.
+
+`magiskboot` natively supports (which means it does not call external tools) all popular compression methods including `gzip` (used everywhere for compressing kernel and ramdisk), `lz4` (used to compress kernel in modern devices like Pixel), `lz4_legacy` (legacy LZ4 block format with special metadata used [only on LG](https://events.static.linuxfound.org/sites/events/files/lcjpcojp13_klee.pdf) to compress kernel), `lzma` (LZMA1 algorithm natively supported in Linux kernel, used in some custom kernel to compress ramdisk), `xz` (LZMA2 algorithm, very high compression rate, used in Magisk for high compression mode and storing binaries), and `bzip2` (used in desktop Linux boot images to create bzImage, haven't seen on Android yet).
+
+The concept of `magiskboot` is to keep the images as intact as possible. For unpacking, it extracts the large chunks of data (kernel, ramdisk, second, dtb, extra etc.) and decompress them if possible. When repacking a boot image, the original boot image has to be provided so it can use the original headers (including MTK specific headers) with only changing the necessary entries such as the data chunk sizes, and re-compress all data with the original compression method. The same concept also applies to CPIO patching: it does not extract all files, modify in file system, archive all files back to cpio as usually done to create Linux `initramfs`, instead we do modifications directly in the cpio level in memory without involving any data extraction.
+
+Command help message:
+
+```
+Usage: magiskboot <action> [args...]
+
+Supported actions:
+ --parse <bootimg>
+  Parse <bootimg> only, do not unpack. Return values: 
+    0:OK   1:error   2:insufficient boot partition size
+    3:chromeos   4:ELF32   5:ELF64
+
+ --unpack <bootimg>
+  Unpack <bootimg> to kernel, ramdisk.cpio, (second), (dtb), (extra) into
+  the current directory. Return value is the same as --parse
+
+ --repack <origbootimg> [outbootimg]
+  Repack kernel, ramdisk.cpio[.ext], second, dtb... from current directory
+  to [outbootimg], or new-boot.img if not specified.
+  It will compress ramdisk.cpio with the same method used in <origbootimg>,
+  or attempt to find ramdisk.cpio.[ext], and repack directly with the
+  compressed ramdisk file
+
+ --hexpatch <file> <hexpattern1> <hexpattern2>
+  Search <hexpattern1> in <file>, and replace with <hexpattern2>
+
+ --cpio <incpio> [commands...]
+  Do cpio commands to <incpio> (modifications are done directly)
+  Each command is a single argument, use quotes if necessary
+  Supported commands:
+    rm [-r] ENTRY
+      Remove ENTRY, specify [-r] to remove recursively
+    mkdir MODE ENTRY
+      Create directory ENTRY in permissions MODE
+    ln TARGET ENTRY
+      Create a symlink to TARGET with the name ENTRY
+    mv SOURCE DEST
+      Move SOURCE to DEST
+    add MODE ENTRY INFILE
+      Add INFILE as ENTRY in permissions MODE; replaces ENTRY if exists
+    extract [ENTRY OUT]
+      Extract ENTRY to OUT, or extract all entries to current directory
+    test
+      Test the current cpio's patch status. Return value: 
+      0:stock   1:Magisk   2:other (phh, SuperSU, Xposed)
+    patch KEEPVERITY KEEPFORCEENCRYPT
+      Ramdisk patches. KEEP**** are boolean values
+    backup ORIG [SHA1]
+      Create ramdisk backups from ORIG
+      SHA1 of stock boot image is optional
+    restore
+      Restore ramdisk from ramdisk backup stored within incpio
+    magisk ORIG HIGHCOMP KEEPVERITY KEEPFORCEENCRYPT [SHA1]
+      Do Magisk patches and backups all in one step
+      Create ramdisk backups from ORIG
+      HIGHCOMP, KEEP**** are boolean values
+      SHA1 of stock boot image is optional
+    sha1
+      Print stock boot SHA1 if previously stored
+
+ --dtb-<cmd> <dtb>
+  Do dtb related cmds to <dtb> (modifications are done directly)
+  Supported commands:
+    dump
+      Dump all contents from dtb for debugging
+    test
+      Check if fstab has verity/avb flags. Return value:
+      0:no flags    1:flag exists
+    patch
+      Search for fstab and remove verity/avb
+
+ --compress[=method] <infile> [outfile]
+  Compress <infile> with [method] (default: gzip), optionally to [outfile]
+  <infile>/[outfile] can be '-' to be STDIN/STDOUT
+  Supported methods: gzip xz lzma bzip2 lz4 lz4_legacy 
+
+ --decompress <infile> [outfile]
+  Detect method and decompress <infile>, optionally to [outfile]
+  <infile>/[outfile] can be '-' to be STDIN/STDOUT
+  Supported methods: gzip xz lzma bzip2 lz4 lz4_legacy 
+
+ --sha1 <file>
+  Print the SHA1 checksum for <file>
+
+ --cleanup
+  Cleanup the current working directory
+```
+
+### magiskinit
+This tool is created to unify Magisk support for both legacy "normal" devices and new `skip_initramfs` devices. The compiled binary will replace `init` in the ramdisk, so things could be done even before `init` is started.
+
+`magiskinit` is responsible for constructing a proper rootfs on devices which the actual rootfs is placed in the system partition instead of ramdisk in `boot.img`, such as the Pixel familiy and most Treble enabled devices, or I like to call it `skip_initramfs` devices: it will parse kernel cmdline, mount sysfs, parse through uevent files to make the system (or vendor if available) block device node, then copy rootfs files from system. For normal "traditional" devices, it will simply swap `init` back to the original one and continue on to the next stage.
+
+With a proper rootfs, `magiskinit` goes on and does all pre-init operations to setup a Magisk environment. It patches rootfs on the fly, providing fundamental support such as patching `init`, `init.rc`, run preliminary `sepolicy` patches, and extracts `magisk` and `init.magisk.rc` (these two files are embedded into `magiskinit`). Once all is done, it will spawn another process (`magiskinit_daemon`) to asynchronously run a full `sepolicy` patch, then starts monitoring the main Magisk daemon to make sure it is always running (a.k.a invincible mode); at the same time, it will execute the original `init` to hand the boot process back.
+
+### magiskpolicy
+(This tool is aliased to `supolicy` for compatibility with SuperSU's sepolicy tool)
+
+This tool is an applet of `magiskinit`: once `magiskinit` had finished its mission in the pre-init stage, it will preserve an entry point for `magiskpolicy`. This tool could be used for advanced developers messing with `sepolicy`, a compiled binary containing SELinux rules. Normally Linux server admins directly modifies the SELinux policy sources (`*.te`) and recompile the `sepolicy` binary, but here we directly patch the binary file since we don't have access to the sources.
+
+All processes spawned from the Magisk daemon, including root shells and all its forks, are running in the context `u:r:su:s0`. Magisk splits the built in patches into 2 parts: preliminary and full
+
+- The preliminary patch should allow all Magisk internal procedures to run properly (can be done manually by the `--magisk` option). It also contains quite a few additional patches so most scripts can run in the daemon before the full patch is done
+- The full patch adds the rule `allow su * * *` on top of the preliminary rules. This is done because stock Samsung ROMs do not support permissive; adding this rule makes the domain effectively permissive. Due to the concern of greatly increasing the boot time, the Magisk daemon will not wait for this patch to finish until the boot stage `late_start` triggers. What this means is that **only `late_start` service mode is guaranteed to run in a fully patched environment**. For non-Samsung devices it doesn't matter because `u:r:su:s0` is permissive anyways, but for full compatibility, it is **highly recommended to run boot scripts in `late_start` service mode**.
+
+Command help message:
+
+```
+Usage: magiskpolicy [--options...] [policystatements...]
+
+Options:
+  --live            directly apply patched policy live
+  --magisk          built-in rules for a Magisk selinux environment
+  --load FILE       load policies from <infile>
+  --save FILE       save policies to <outfile>
+
+If no input file is specified, it will load from current policies
+If neither --live nor --save is specified, nothing will happen
+
+One policy statement should be treated as one parameter;
+this means a full policy statement should be enclosed in quotes;
+multiple policy statements can be provided in a single command
+
+The statements has a format of "<action> [args...]"
+Use '*' in args to represent every possible match.
+Collections wrapped in curly brackets can also be used as args.
+
+Supported policy statements:
+
+Type 1:
+"<action> source-class target-class permission-class permission"
+Action: allow, deny, auditallow, auditdeny
+
+Type 2:
+"<action> source-class target-class permission-class ioctl range"
+Action: allowxperm, auditallowxperm, dontauditxperm
+
+Type 3:
+"<action> class"
+Action: create, permissive, enforcing
+
+Type 4:
+"attradd class attribute"
+
+Type 5:
+"typetrans source-class target-class permission-class default-class (optional: object-name)"
+
+Notes:
+- typetrans does not support the all match '*' syntax
+- permission-class cannot be collections
+- source-class and target-class can also be attributes
+
+Example: allow { source1 source2 } { target1 target2 } permission-class *
+Will be expanded to:
+
+allow source1 target1 permission-class { all-permissions }
+allow source1 target2 permission-class { all-permissions }
+allow source2 target1 permission-class { all-permissions }
+allow source2 target2 permission-class { all-permissions }
+```
+
+
+### magisk
+The magisk binary contains all the magic of Magisk, providing all the features Magisk has to offer. When called with the name `magisk`, it works as an utility tool with many helper functions, and also the entry point for `init` to start Magisk services. These helper functions are extensively used by the [Magisk Module Template](https://github.com/topjohnwu/magisk-module-template) and Magisk Manager.
+
+Command help message:
+
+```
+Usage: magisk [applet [arguments]...]
+   or: magisk [options]...
+
+Options:
+   -c                        print current binary version
+   -v                        print running daemon version
+   -V                        print running daemon version code
+   --list                    list all available applets
+   --install [SOURCE] DIR    symlink all applets to DIR. SOURCE is optional
+   --createimg IMG SIZE      create ext4 image. SIZE is interpreted in MB
+   --imgsize IMG             report ext4 image used/total size
+   --resizeimg IMG SIZE      resize ext4 image. SIZE is interpreted in MB
+   --mountimg IMG PATH       mount IMG to PATH and prints the loop device
+   --umountimg PATH LOOP     unmount PATH and delete LOOP device
+   --[init service]          start init service
+   --unlock-blocks           set BLKROSET flag to OFF for all block devices
+   --restorecon              fix selinux context on Magisk files and folders
+   --clone-attr SRC DEST     clone permission, owner, and selinux context
+
+Supported init services:
+   daemon, post-fs, post-fs-data, service
+
+Supported applets:
+    su, resetprop, magiskhide
+```
+
+### su
+An applet of `magisk`, the MagiskSU entry point, the good old `su` command.
+
+Command help message:
+
+```
+Usage: su [options] [-] [user [argument...]]
+
+Options:
+  -c, --command COMMAND         pass COMMAND to the invoked shell
+  -h, --help                    display this help message and exit
+  -, -l, --login                pretend the shell to be a login shell
+  -m, -p,
+  --preserve-environment        preserve the entire environment
+  -s, --shell SHELL             use SHELL instead of the default /system/bin/sh
+  -v, --version                 display version number and exit
+  -V                            display version code and exit,
+                                this is used almost exclusively by Superuser.apk
+  -mm, -M,
+  --mount-master                run in the global mount namespace,
+                                use if you need to publicly apply mounts
+```
+
+Note: even though the `-Z, --context` option is not listed above, it actually still exists for compatibility with apps using SuperSU. However MagiskSU will silently ignore the option since it's no more relevant.
+
+### resetprop
+An applet of `magisk`, an advanced system property manipulation utility. Here's some background knowledge: 
+
+System properties are stored in a hybrid trie/binary tree data structure in memory. These properties are allowed to be read by many processes (natively via `libcutils`, in shells via the `getprop` command); however, only the `init` process have direct write access to the memory of property data. `init` provides a `property_service` to accept property update requests and acts as a gatekeeper, doing things such as preventing **read-only** props to be overridden and storing **persist** props to non-volatile storages. In addition, property triggers registered in `*.rc` scripts are also handled here.
+
+`resetprop` is created by pulling out the portion of source code managing properties from AOSP and try to mimic what `init` is doing. With some hackery the result is that we have direct access to the data structure, bypassing the need to go through `property_service` to gain arbitrary control. Here is a small implementation detail: the data structure and the stack-like memory allocation method does not support removing props (they are **designed NOT** to be removed); prop deletion is accomplished by detaching the target node from the tree structure, making it effectively invisible. As we cannot reclaim the memory allocated to store the property, this wastes a few bytes of memory but it shouldn't be a big deal unless you are adding and deleting hundreds of thousands of props over and over again.
+
+Due to the fact that we bypassed `property_service`, there are a few things developer should to be aware of:
+
+- `on property:foo=bar` triggers registered in `*.rc` scripts will not be triggered when props are changed. This could be a good thing or a bad thing, depending on what behavior you expect. The default behavior of `resetprop` matches the original `setprop`, which **WILL** trigger events (implemented by deleting the prop and set the props via `property_service`), but there is a flag (`-n`) to disable it if you need this special behavior.
+- persist props are stored both in memory and in `/data/property`. By default, deleting props will **NOT** remove it from persistent storage, meaning the prop will be restored after the next reboot; reading props will **NOT** read from persistent storage, as this is the behavior of normal `getprop`. With the flag `-p` enabled, deleting props will remove the prop **BOTH** in memory and `/data/property`; props will be read from **BOTH** in memory and persistent storage.
+
+Command help message:
+
+```
+Usage: resetprop [flags] [options...]
+
+Options:
+   -h, --help        show this message
+   (no arguments)    print all properties
+   NAME              get property
+   NAME VALUE        set property entry NAME with VALUE
+   --file FILE       load props from FILE
+   --delete NAME     delete property
+
+Flags:
+   -v      print verbose output to stderr
+   -n      set properties without init triggers
+           only affects setprop
+   -p      access actual persist storage
+           only affects getprop and deleteprop
+```
+
+### magiskhide
+An applet of `magisk`, the CLI to control MagiskHide. Use this tool to communicate with the daemon to change MagiskHide settings.
+
+Command help message: 
+
+```
+Usage: magiskhide [--options [arguments...] ]
+
+Options:
+  --enable          Start magiskhide
+  --disable         Stop magiskhide
+  --add PROCESS     Add PROCESS to the hide list
+  --rm PROCESS      Remove PROCESS from the hide list
+  --ls              Print out the current hide list
+```

native/jni/Android.mk

@@ -31,7 +31,7 @@ LOCAL_SHARED_LIBRARIES := libsqlite libselinux
 
 LOCAL_C_INCLUDES := \
 	jni/include \
-	jni/external/include \
+	$(EXT_PATH)/include \
 	$(LIBSELINUX)
 
 LOCAL_SRC_FILES := \
@@ -87,22 +87,21 @@ include $(BUILD_EXECUTABLE)
 # magiskboot
 include $(CLEAR_VARS)
 LOCAL_MODULE := magiskboot
-LOCAL_STATIC_LIBRARIES := liblzma liblz4 libbz2 libfdt
+LOCAL_STATIC_LIBRARIES := libmincrypt liblzma liblz4 libbz2 libfdt
 LOCAL_C_INCLUDES := \
 	jni/include \
-	jni/external/include \
+	$(EXT_PATH)/include \
 	$(LIBLZMA) \
 	$(LIBLZ4) \
 	$(LIBBZ2) \
 	$(LIBFDT)
 
 LOCAL_SRC_FILES := \
-	external/sha1/sha1.c \
 	magiskboot/main.c \
 	magiskboot/bootimg.c \
 	magiskboot/hexpatch.c \
 	magiskboot/compress.c \
-	magiskboot/types.c \
+	magiskboot/format.c \
 	magiskboot/dtb.c \
 	magiskboot/ramdisk.c \
 	$(UTIL_SRC)

native/jni/Application.mk

@@ -2,3 +2,4 @@ APP_ABI := x86 x86_64 armeabi-v7a arm64-v8a
 APP_PLATFORM := android-21
 APP_CFLAGS := $(MAGISK_FLAGS) -std=gnu99
 APP_CPPFLAGS := -std=c++11
+APP_SHORT_COMMANDS := true

native/jni/core/bootstages.c

@@ -51,7 +51,7 @@ struct node_entry {
 static void concat_path(struct node_entry *node) {
 	if (node->parent)
 		concat_path(node->parent);
-	int len = strlen(buf);
+	size_t len = strlen(buf);
 	buf[len] = '/';
 	strcpy(buf + len + 1, node->name);
 }
@@ -140,14 +140,14 @@ static void pm_setenv(struct vector *v) {
 static void exec_common_script(const char* stage) {
 	DIR *dir;
 	struct dirent *entry;
-	snprintf(buf, PATH_MAX, "%s/%s.d", COREDIR, stage);
+	snprintf(buf2, PATH_MAX, "%s/%s.d", COREDIR, stage);
 
-	if (!(dir = xopendir(buf)))
+	if (!(dir = xopendir(buf2)))
 		return;
 
 	while ((entry = xreaddir(dir))) {
 		if (entry->d_type == DT_REG) {
-			snprintf(buf2, PATH_MAX, "%s/%s", buf, entry->d_name);
+			snprintf(buf2, PATH_MAX, "%s/%s.d/%s", COREDIR, stage, entry->d_name);
 			if (access(buf2, X_OK) == -1)
 				continue;
 			LOGI("%s.d: exec [%s]\n", stage, entry->d_name);
@@ -274,7 +274,7 @@ static void clone_skeleton(struct node_entry *node) {
 		char *con;
 		xstat(full_path, &s);
 		getfilecon(full_path, &con);
-		LOGI("tmpfs: %s\n", full_path);
+		LOGI("mnt_tmpfs : %s\n", full_path);
 		xmount("tmpfs", full_path, "tmpfs", 0, NULL);
 		chmod(full_path, s.st_mode & 0777);
 		chown(full_path, s.st_uid, s.st_gid);
@@ -295,7 +295,7 @@ static void clone_skeleton(struct node_entry *node) {
 		if (child->parent->parent == NULL && strcmp(child->name, "vendor") == 0) {
 			if (IS_LNK(child)) {
 				cp_afc(MIRRDIR "/system/vendor", "/system/vendor");
-				LOGI("cplink: %s -> %s\n", MIRRDIR "/system/vendor", "/system/vendor");
+				LOGI("creat_link: %s <- %s\n", "/system/vendor", MIRRDIR "/system/vendor");
 			}
 			// Skip
 			continue;
@@ -315,9 +315,9 @@ static void clone_skeleton(struct node_entry *node) {
 			// Copy symlinks directly
 			cp_afc(buf2, buf);
 			#ifdef MAGISK_DEBUG
-				LOGI("cplink: %s -> %s\n",buf2, buf);
+				LOGI("creat_link: %s <- %s\n",buf, buf2);
 			#else
-				LOGI("cplink: %s\n", buf);
+				LOGI("creat_link: %s\n", buf);
 			#endif
 		} else {
 			snprintf(buf, PATH_MAX, "%s/%s", full_path, child->name);
@@ -392,11 +392,16 @@ static void simple_mount(const char *path) {
  * Miscellaneous *
  *****************/
 
+#define alt_img ((char *[]) \
+{ "/cache/magisk.img", "/data/magisk_merge.img", "/data/adb/magisk_merge.img", NULL })
+
 static int prepare_img() {
-	// First merge images
-	if (merge_img("/data/magisk_merge.img", MAINIMG)) {
-		LOGE("Image merge /data/magisk_merge.img -> " MAINIMG " failed!\n");
-		return 1;
+	// Merge images
+	for (int i = 0; alt_img[i]; ++i) {
+		if (merge_img(alt_img[i], MAINIMG)) {
+			LOGE("Image merge %s -> " MAINIMG " failed!\n", alt_img[i]);
+			return 1;
+		}
 	}
 
 	if (access(MAINIMG, F_OK) == -1) {
@@ -493,7 +498,7 @@ void post_fs_data(int client) {
 	// ack
 	write_int(client, 0);
 	close(client);
-	if (!check_data())
+	if (!is_daemon_init && !check_data())
 		goto unblock;
 
 	// Start the debug log
@@ -642,23 +647,30 @@ void late_start(int client) {
 core_only:
 	// Install Magisk Manager if exists
 	if (access(MANAGERAPK, F_OK) == 0) {
+		rename(MANAGERAPK, "/data/magisk.apk");
+		setfilecon("/data/magisk.apk", "u:object_r:su_file:s0");
 		while (1) {
 			sleep(5);
 			int apk_res = -1, pid;
 			pid = exec_command(1, &apk_res, pm_setenv,
 				"app_process",
 				"/system/bin", "com.android.commands.pm.Pm",
-				"install", "-r", MANAGERAPK, NULL);
+				"install", "-r", "/data/magisk.apk", NULL);
 			if (pid != -1) {
+				int err = 0;
+				while (fdgets(buf, PATH_MAX, apk_res) > 0) {
+					LOGD("apk_install: %s", buf);
+					err |= strstr(buf, "Error:") != NULL;
+				}
 				waitpid(pid, NULL, 0);
-				fdgets(buf, PATH_MAX, apk_res);
 				close(apk_res);
 				// Keep trying until pm is started
-				if (strstr(buf, "Error:") == NULL)
-					break;
+				if (err)
+					continue;
+				break;
 			}
 		}
-		unlink(MANAGERAPK);
+		unlink("/data/magisk.apk");
 	}
 
 	// All boot stage done, cleanup everything

native/jni/core/daemon.c

@@ -25,7 +25,7 @@ int is_daemon_init = 0, seperate_vendor = 0;
 static void *request_handler(void *args) {
 	int client = *((int *) args);
 	free(args);
-	client_request req = read_int(client);
+	int req = read_int(client);
 
 	struct ucred credential;
 	get_client_cred(client, &credential);
@@ -129,16 +129,12 @@ void daemon_init() {
 	unlink("/data/magisk_debug.log");
 	chmod("/data/adb", 0700);
 
-	// Use shell glob to match files
-	exec_command_sync("sh", "-c",
-			"mv -f /data/adb/magisk/stock_*.img.gz /data;"
-			"rm -f /data/user*/*/magisk.db;", NULL);
-
 	LOGI("* Creating /sbin overlay");
 	DIR *dir;
 	struct dirent *entry;
 	int root, sbin;
 	char buf[PATH_MAX], buf2[PATH_MAX];
+	char magisk_name[10], init_name[10];
 
 	// Setup links under /sbin
 	xmount(NULL, "/", NULL, MS_REMOUNT, NULL);
@@ -146,13 +142,8 @@ void daemon_init() {
 	chmod("/root", 0755);
 	root = xopen("/root", O_RDONLY | O_CLOEXEC);
 	sbin = xopen("/sbin", O_RDONLY | O_CLOEXEC);
-	dir = xfdopendir(sbin);
-	while((entry = xreaddir(dir))) {
-		if (strcmp(entry->d_name, ".") == 0 || strcmp(entry->d_name, "..") == 0) continue;
-		linkat(sbin, entry->d_name, root, entry->d_name, 0);
-		if (strcmp(entry->d_name, "magisk") == 0)
-			unlinkat(sbin, entry->d_name, 0);
-	}
+	link_dir(sbin, root);
+	unlink("/sbin/magisk");
 	close(sbin);
 
 	xmount("tmpfs", "/sbin", "tmpfs", 0, NULL);
@@ -165,14 +156,26 @@ void daemon_init() {
 		snprintf(buf2, PATH_MAX, "/sbin/%s", entry->d_name);
 		xsymlink(buf, buf2);
 	}
+
+	gen_rand_str(magisk_name, sizeof(magisk_name));
+	snprintf(buf, PATH_MAX, "/root/%s", magisk_name);
+	unlink("/sbin/magisk");
+	rename("/root/magisk", buf);
+	xsymlink(buf, "/sbin/magisk");
 	for (int i = 0; applet[i]; ++i) {
 		snprintf(buf2, PATH_MAX, "/sbin/%s", applet[i]);
-		xsymlink("/root/magisk", buf2);
+		xsymlink(buf, buf2);
 	}
+
+	gen_rand_str(init_name, sizeof(init_name));
+	snprintf(buf, PATH_MAX, "/root/%s", init_name);
+	unlink("/sbin/magiskinit");
+	rename("/root/magiskinit", buf);
 	for (int i = 0; init_applet[i]; ++i) {
 		snprintf(buf2, PATH_MAX, "/sbin/%s", init_applet[i]);
-		xsymlink("/root/magiskinit", buf2);
+		xsymlink(buf, buf2);
 	}
+
 	close(root);
 
 	// Backward compatibility
@@ -191,7 +194,7 @@ void daemon_init() {
 	// Check whether skip_initramfs device
 	vec_for_each(&mounts, line) {
 		if (strstr(line, " /system_root ")) {
-			xmkdir_p(MIRRDIR "/system", 0755);
+			xmkdirs(MIRRDIR "/system", 0755);
 			bind_mount("/system_root/system", MIRRDIR "/system");
 			skip_initramfs = 1;
 			break;
@@ -200,20 +203,20 @@ void daemon_init() {
 	vec_for_each(&mounts, line) {
 		if (!skip_initramfs && strstr(line, " /system ")) {
 			sscanf(line, "%s", buf);
-			xmkdir_p(MIRRDIR "/system", 0755);
+			xmkdirs(MIRRDIR "/system", 0755);
 			xmount(buf, MIRRDIR "/system", "ext4", MS_RDONLY, NULL);
 			#ifdef MAGISK_DEBUG
-				LOGI("mount: %s -> %s\n", buf, MIRRDIR "/system");
+				LOGI("mount: %s <- %s\n", MIRRDIR "/system", buf);
 			#else
 				LOGI("mount: %s\n", MIRRDIR "/system");
 			#endif
 		} else if (strstr(line, " /vendor ")) {
 			seperate_vendor = 1;
 			sscanf(line, "%s", buf);
-			xmkdir_p(MIRRDIR "/vendor", 0755);
+			xmkdirs(MIRRDIR "/vendor", 0755);
 			xmount(buf, MIRRDIR "/vendor", "ext4", MS_RDONLY, NULL);
 			#ifdef MAGISK_DEBUG
-				LOGI("mount: %s -> %s\n", buf, MIRRDIR "/vendor");
+				LOGI("mount: %s <- %s\n", MIRRDIR "/vendor", buf);
 			#else
 				LOGI("mount: %s\n", MIRRDIR "/vendor");
 			#endif
@@ -224,16 +227,16 @@ void daemon_init() {
 	if (!seperate_vendor) {
 		xsymlink(MIRRDIR "/system/vendor", MIRRDIR "/vendor");
 		#ifdef MAGISK_DEBUG
-			LOGI("link: %s -> %s\n", MIRRDIR "/system/vendor", MIRRDIR "/vendor");
+			LOGI("link: %s <- %s\n", MIRRDIR "/vendor", MIRRDIR "/system/vendor");
 		#else
 			LOGI("link: %s\n", MIRRDIR "/vendor");
 		#endif
 	}
-	xmkdir_p(MIRRDIR "/bin", 0755);
+	xmkdirs(MIRRDIR "/bin", 0755);
 	bind_mount(DATABIN, MIRRDIR "/bin");
 
 	LOGI("* Setting up internal busybox");
-	xmkdir_p(BBPATH, 0755);
+	xmkdirs(BBPATH, 0755);
 	exec_command_sync(MIRRDIR "/bin/busybox", "--install", "-s", BBPATH, NULL);
 	xsymlink(MIRRDIR "/bin/busybox", BBPATH "/busybox");
 }
@@ -262,6 +265,9 @@ void start_daemon() {
 		exit(1);
 	xlisten(fd, 10);
 
+	// Start the log monitor
+	monitor_logs();
+
 	if ((is_daemon_init = (access(MAGISKTMP, F_OK) == 0))) {
 		// Restart stuffs if the daemon is restarted
 		exec_command_sync("logcat", "-b", "all", "-c", NULL);
@@ -271,9 +277,6 @@ void start_daemon() {
 		daemon_init();
 	}
 
-	// Start the log monitor
-	monitor_logs();
-
 	LOGI("Magisk v" xstr(MAGISK_VERSION) "(" xstr(MAGISK_VER_CODE) ") daemon started\n");
 
 	// Change process name

native/jni/core/log_monitor.c

@@ -12,8 +12,10 @@
 
 #include "magisk.h"
 #include "utils.h"
+#include "resetprop.h"
 
 extern int is_daemon_init;
+int logd = 0;
 
 static int am_proc_start_filter(const char *log) {
 	return strstr(log, "am_proc_start") != NULL;
@@ -44,9 +46,20 @@ struct log_listener log_events[] = {
 };
 
 #ifdef MAGISK_DEBUG
-static int debug_log_pid, debug_log_fd;
+static int debug_log_pid = -1, debug_log_fd = -1;
 #endif
 
+static void check_logd() {
+	char *prop = getprop("init.svc.logd");
+	if (prop != NULL) {
+		free(prop);
+		logd = 1;
+	} else {
+		LOGD("log_monitor: logd not started, disable logging");
+		logd = 0;
+	}
+}
+
 static void *logger_thread(void *args) {
 	int log_fd = -1, log_pid;
 	char line[4096];
@@ -54,8 +67,17 @@ static void *logger_thread(void *args) {
 	LOGD("log_monitor: logger start");
 
 	while (1) {
+		if (!logd) {
+			// Disable all services
+			for (int i = 0; i < (sizeof(log_events) / sizeof(struct log_listener)); ++i) {
+				close(log_events[i].fd);
+				log_events[i].fd = -1;
+			}
+			return NULL;
+		}
+
 		// Start logcat
-		log_pid = exec_command(0, &log_fd, NULL, "logcat", "-b", "all" , "-v", "threadtime", "-s", "am_proc_start", "Magisk", NULL);
+		log_pid = exec_command(0, &log_fd, NULL, "logcat", "-b", "events", "-b", "main", "-v", "threadtime", "-s", "am_proc_start", "-s", "Magisk", NULL);
 		while (fdgets(line, sizeof(line), log_fd)) {
 			for (int i = 0; i < (sizeof(log_events) / sizeof(struct log_listener)); ++i) {
 				if (log_events[i].fd > 0 && log_events[i].filter(line)) {
@@ -74,7 +96,9 @@ static void *logger_thread(void *args) {
 		waitpid(log_pid, NULL, 0);
 
 		// Clear buffer before restart
-		exec_command_sync("logcat", "-b", "all", "-c", NULL);
+		exec_command_sync("logcat", "-b", "events", "-b", "main", "-c", NULL);
+
+		check_logd();
 	}
 
 	// Should never be here, but well...
@@ -82,8 +106,6 @@ static void *logger_thread(void *args) {
 }
 
 static void *magisk_log_thread(void *args) {
-	int have_data = 0;
-
 	// Buffer logs before we have data access
 	struct vector logs;
 	vec_init(&logs);
@@ -97,10 +119,12 @@ static void *magisk_log_thread(void *args) {
 
 	LOGD("log_monitor: magisk log dumper start");
 
-	FILE *log;
+	FILE *log = NULL;
 	for (char *line; xxread(pipefd[0], &line, sizeof(line)) > 0; free(line)) {
-		if (!have_data) {
-			if ((have_data = check_data())) {
+		if (!is_daemon_init) {
+			vec_push_back(&logs, strdup(line));
+		} else {
+			if (log == NULL) {
 				// Dump buffered logs to file
 				log = xfopen(LOGFILE, "w");
 				setbuf(log, NULL);
@@ -110,12 +134,9 @@ static void *magisk_log_thread(void *args) {
 					free(tmp);
 				}
 				vec_destroy(&logs);
-			} else {
-				vec_push_back(&logs, strdup(line));
 			}
-		}
-		if (have_data)
 			fprintf(log, "%s", line);
+		}
 	}
 	return NULL;
 }
@@ -142,40 +163,49 @@ static void *debug_magisk_log_thread(void *args) {
 void monitor_logs() {
 	pthread_t thread;
 
-	// Start log file dumper before monitor
-	xpthread_create(&thread, NULL, magisk_log_thread, NULL);
-	pthread_detach(thread);
+	check_logd();
 
-	// Start logcat monitor
-	xpthread_create(&thread, NULL, logger_thread, NULL);
-	pthread_detach(thread);
+	if (logd) {
+		// Start log file dumper before monitor
+		xpthread_create(&thread, NULL, magisk_log_thread, NULL);
+		pthread_detach(thread);
 
+		// Start logcat monitor
+		xpthread_create(&thread, NULL, logger_thread, NULL);
+		pthread_detach(thread);
+	}
 }
 
 void start_debug_full_log() {
 #ifdef MAGISK_DEBUG
-	// Log everything initially
-	debug_log_fd = xopen(DEBUG_LOG, O_WRONLY | O_CREAT | O_CLOEXEC | O_TRUNC, 0644);
-	debug_log_pid = exec_command(0, &debug_log_fd, NULL, "logcat", "-v", "threadtime", NULL);
-	close(debug_log_fd);
+	if (logd) {
+		// Log everything initially
+		debug_log_fd = xopen(DEBUG_LOG, O_WRONLY | O_CREAT | O_CLOEXEC | O_TRUNC, 0644);
+		debug_log_pid = exec_command(0, &debug_log_fd, NULL, "logcat", "-v", "threadtime", NULL);
+		close(debug_log_fd);
+	}
 #endif
 }
 
 void stop_debug_full_log() {
 #ifdef MAGISK_DEBUG
 	// Stop recording the boot logcat after every boot task is done
-	kill(debug_log_pid, SIGTERM);
-	waitpid(debug_log_pid, NULL, 0);
-	// Start debug thread
-	start_debug_log();
+	if (debug_log_pid > 0) {
+		kill(debug_log_pid, SIGTERM);
+		waitpid(debug_log_pid, NULL, 0);
+		// Start debug thread
+		start_debug_log();
+	}
 #endif
 }
 
 void start_debug_log() {
 #ifdef MAGISK_DEBUG
-	pthread_t thread;
-	// Start debug thread
-	xpthread_create(&thread, NULL, debug_magisk_log_thread, NULL);
-	pthread_detach(thread);
+	if (logd) {
+		pthread_t thread;
+		// Start debug thread
+		xpthread_create(&thread, NULL, debug_magisk_log_thread, NULL);
+		pthread_detach(thread);
+	}
 #endif
 }

native/jni/core/magiskinit.c

@@ -55,10 +55,11 @@
 
 extern policydb_t *policydb;
 int (*init_applet_main[]) (int, char *[]) = { magiskpolicy_main, magiskpolicy_main, NULL };
-static int keepverity = 0, keepencrypt = 0;
+static char RAND_SOCKET_NAME[sizeof(SOCKET_NAME)];
+static int SOCKET_OFF = -1;
 
 struct cmdline {
-	int skip_initramfs;
+	char skip_initramfs;
 	char slot[3];
 };
 
@@ -72,12 +73,11 @@ struct device {
 
 static void parse_cmdline(struct cmdline *cmd) {
 	// cleanup
-	cmd->skip_initramfs = 0;
-	cmd->slot[0] = '\0';
+	memset(cmd, 0, sizeof(&cmd));
 
 	char cmdline[4096];
 	mkdir("/proc", 0555);
-	mount("proc", "/proc", "proc", 0, NULL);
+	xmount("proc", "/proc", "proc", 0, NULL);
 	int fd = open("/proc/cmdline", O_RDONLY | O_CLOEXEC);
 	cmdline[read(fd, cmdline, sizeof(cmdline))] = '\0';
 	close(fd);
@@ -87,11 +87,13 @@ static void parse_cmdline(struct cmdline *cmd) {
 			sscanf(tok, "androidboot.slot_suffix=%s", cmd->slot);
 		} else if (strncmp(tok, "androidboot.slot", 16) == 0) {
 			cmd->slot[0] = '_';
-			sscanf(tok, "androidboot.slot=%s", cmd->slot + 1);
+			sscanf(tok, "androidboot.slot=%c", cmd->slot + 1);
 		} else if (strcmp(tok, "skip_initramfs") == 0) {
 			cmd->skip_initramfs = 1;
 		}
 	}
+
+	VLOG("cmdline: skip_initramfs[%d] slot[%s]\n", cmd->skip_initramfs, cmd->slot);
 }
 
 static void parse_device(struct device *dev, char *uevent) {
@@ -146,24 +148,7 @@ static int setup_block(struct device *dev, const char *partname) {
 	return 0;
 }
 
-static void fstab_patch_cb(int dirfd, struct dirent *entry) {
-	if (entry->d_type == DT_REG && strstr(entry->d_name, "fstab")) {
-		void *buf;
-		size_t _size;
-		uint32_t size;
-		full_read_at(dirfd, entry->d_name, &buf, &_size);
-		size = _size;  /* Type conversion */
-		if (!keepverity)
-			patch_verity(&buf, &size, 1);
-		if (!keepencrypt)
-			patch_encryption(&buf, &size);
-		int fstab = xopenat(dirfd, entry->d_name, O_WRONLY | O_CLOEXEC);
-		write(fstab, buf, size);
-		close(fstab);
-	}
-}
-
-static void patch_ramdisk(int root) {
+static void patch_ramdisk() {
 	void *addr;
 	size_t size;
 	mmap_rw("/init", &addr, &size);
@@ -181,30 +166,11 @@ static void patch_ramdisk(int root) {
 	write(fd, addr, size);
 	close(fd);
 	free(addr);
-
-	/* Disabled for now */
-
-	// char *key, *value;
-	// full_read("/.backup/.magisk", &addr, &size);
-	// for (char *tok = strtok(addr, "\n"); tok; tok = strtok(NULL, "\n")) {
-	// 	key = tok;
-	// 	value = strchr(tok, '=') + 1;
-	// 	value[-1] = '\0';
-	// 	if (strcmp(key, "KEEPVERITY") == 0)
-	// 		keepverity = strcmp(value, "true") == 0;
-	// 	else if (strcmp(key, "KEEPFORCEENCRYPT") == 0)
-	// 		keepencrypt = strcmp(value, "true") == 0;
-	// }
-
-	// excl_list = (char *[]) { "system_root", "system", "vendor", NULL };
-	// in_order_walk(root, fstab_patch_cb);
-	// if (!keepverity)
-	// 	unlink("/verity_key");
 }
 
 static int strend(const char *s1, const char *s2) {
-	int l1 = strlen(s1);
-	int l2 = strlen(s2);
+	size_t l1 = strlen(s1);
+	size_t l2 = strlen(s2);
 	return strcmp(s1 + l1 - l2, s2);
 }
 
@@ -220,6 +186,8 @@ static int compile_cil() {
 
 	cil_db_init(&db);
 	cil_set_mls(db, 1);
+	cil_set_multiple_decls(db, 1);
+	cil_set_disable_neverallow(db, 1);
 	cil_set_target_platform(db, SEPOL_TARGET_SELINUX);
 	cil_set_policy_version(db, POLICYDB_VERSION_XPERMS_IOCTL);
 	cil_set_attrs_expand_generated(db, 0);
@@ -303,16 +271,26 @@ static int verify_precompiled() {
 	return strcmp(sys_sha, ven_sha) == 0;
 }
 
-static void patch_sepolicy() {
+static int patch_sepolicy() {
 	if (access("/sepolicy", R_OK) == 0)
 		load_policydb("/sepolicy");
 	else if (access(SPLIT_PRECOMPILE, R_OK) == 0 && verify_precompiled())
 		load_policydb(SPLIT_PRECOMPILE);
 	else if (access(SPLIT_PLAT_CIL, R_OK) == 0)
 		compile_cil();
+	else
+		return 1;
 
 	sepol_magisk_rules();
 	dump_policydb("/sepolicy");
+
+	// Remove the stupid debug sepolicy and use our own
+	if (access("/sepolicy_debug", F_OK) == 0) {
+		unlink("/sepolicy_debug");
+		link("/sepolicy", "/sepolicy_debug");
+	}
+
+	return 0;
 }
 
 #define BUFSIZE (1 << 20)
@@ -321,7 +299,7 @@ static int unxz(const void *buf, size_t size, int fd) {
 	lzma_stream strm = LZMA_STREAM_INIT;
 	if (lzma_auto_decoder(&strm, UINT64_MAX, 0) != LZMA_OK)
 		return 1;
-	lzma_ret ret = 0;
+	lzma_ret ret;
 	void *out = malloc(BUFSIZE);
 	strm.next_in = buf;
 	strm.avail_in = size;
@@ -355,6 +333,23 @@ static int dump_magiskrc(const char *path, mode_t mode) {
 	return 0;
 }
 
+static void patch_socket_name(const char *path) {
+	void *buf;
+	size_t size;
+	mmap_rw(path, &buf, &size);
+	if (SOCKET_OFF < 0) {
+		for (int i = 0; i < size; ++i) {
+			if (memcmp(buf + i, socket_name, sizeof(SOCKET_NAME)) == 0) {
+				SOCKET_OFF = i;
+				break;
+			}
+		}
+	}
+	gen_rand_str(RAND_SOCKET_NAME, sizeof(SOCKET_NAME));
+	memcpy(buf + SOCKET_OFF, RAND_SOCKET_NAME, sizeof(SOCKET_NAME));
+	munmap(buf, size);
+}
+
 static void magisk_init_daemon() {
 	setsid();
 
@@ -362,13 +357,15 @@ static void magisk_init_daemon() {
 	sepol_allow("su", ALL, ALL, ALL);
 
 	// Wait till init cold boot done
-	wait_till_exists("/dev/.coldboot_done");
+	while (access("/dev/.coldboot_done", F_OK))
+		usleep(1);
 
 	int null = open("/dev/null", O_RDWR | O_CLOEXEC);
 	dup3(null, STDIN_FILENO, O_CLOEXEC);
 	dup3(null, STDOUT_FILENO, O_CLOEXEC);
 	dup3(null, STDERR_FILENO, O_CLOEXEC);
-	close(null);
+	if (null > STDERR_FILENO)
+		close(null);
 
 	// Transit our context to su (mimic setcon)
 	int fd, crap;
@@ -385,6 +382,7 @@ static void magisk_init_daemon() {
 	while (1) {
 		struct sockaddr_un sun;
 		fd = setup_socket(&sun);
+		memcpy(sun.sun_path + 1, RAND_SOCKET_NAME, sizeof(SOCKET_NAME));
 		while (connect(fd, (struct sockaddr*) &sun, sizeof(sun)))
 			usleep(10000); /* Wait 10 ms after each try */
 
@@ -431,95 +429,114 @@ int main(int argc, char *argv[]) {
 	dump_magiskrc("/overlay/init.magisk.rc", 0750);
 	mkdir("/overlay/sbin", 0755);
 	dump_magisk("/overlay/sbin/magisk", 0755);
+	patch_socket_name("/overlay/sbin/magisk");
 	mkdir("/overlay/root", 0755);
 	link("/init", "/overlay/root/magiskinit");
 
 	struct cmdline cmd;
 	parse_cmdline(&cmd);
 
-	VLOG("cmdline: skip_initramfs=[%d] slot_suffix=[%s]\n", cmd.skip_initramfs, cmd.slot);
+	/* ***********
+	 * Initialize
+	 * ***********/
 
 	int root = open("/", O_RDONLY | O_CLOEXEC);
 
 	if (cmd.skip_initramfs) {
-		// Exclude overlay folder
-		excl_list = (char *[]) { "overlay", ".backup", NULL };
 		// Clear rootfs
+		excl_list = (char *[]) { "overlay", ".backup", NULL };
 		frm_rf(root);
-
-		mkdir("/sys", 0755);
-		mount("sysfs", "/sys", "sysfs", 0, NULL);
-
-		char partname[32];
-		snprintf(partname, sizeof(partname), "system%s", cmd.slot);
-
-		struct device dev;
-		setup_block(&dev, partname);
-
-		mkdir("/system_root", 0755);
-		mount(dev.path, "/system_root", "ext4", MS_RDONLY, NULL);
-		int system_root = open("/system_root", O_RDONLY | O_CLOEXEC);
-
-		// Exclude system folder
-		excl_list = (char *[]) { "system", NULL };
-		clone_dir(system_root, root);
-		mkdir("/system", 0755);
-		mount("/system_root/system", "/system", NULL, MS_BIND, NULL);
-
-		snprintf(partname, sizeof(partname), "vendor%s", cmd.slot);
-
-		// We need to mount independent vendor partition
-		if (setup_block(&dev, partname) == 0)
-			mount(dev.path, "/vendor", "ext4", MS_RDONLY, NULL);
-
-		close(system_root);
+	} else if (access("/ramdisk.cpio.xz", R_OK) == 0) {
+		// High compression mode
+		void *addr;
+		size_t size;
+		mmap_ro("/ramdisk.cpio.xz", &addr, &size);
+		int fd = creat("/ramdisk.cpio", 0);
+		unxz(addr, size, fd);
+		munmap(addr, size);
+		close(fd);
+		struct vector v;
+		vec_init(&v);
+		parse_cpio(&v, "/ramdisk.cpio");
+		excl_list = (char *[]) { "overlay", ".backup", NULL };
+		frm_rf(root);
+		chdir("/");
+		cpio_extract_all(&v);
+		cpio_vec_destroy(&v);
 	} else {
-		if (access("/ramdisk.cpio.xz", R_OK) == 0) {
-			// High compression mode
-			void *addr;
-			size_t size;
-			mmap_ro("/ramdisk.cpio.xz", &addr, &size);
-			int fd = creat("/ramdisk.cpio", 0);
-			unxz(addr, size, fd);
-			munmap(addr, size);
-			close(fd);
-			struct vector v;
-			vec_init(&v);
-			parse_cpio(&v, "/ramdisk.cpio");
-			excl_list = (char *[]) { "overlay", ".backup", NULL };
-			frm_rf(root);
-			chdir("/");
-			cpio_extract_all(&v);
-			cpio_vec_destroy(&v);
-		} else {
-			// Revert original init binary
-			unlink("/init");
-			link("/.backup/init", "/init");
-		}
+		// Revert original init binary
+		unlink("/init");
+		link("/.backup/init", "/init");
 	}
 
-	int overlay = open("/overlay", O_RDONLY | O_CLOEXEC);
+	/* ************
+	 * Early Mount
+	 * ************/
+
+	// If skip_initramfs or using split policies, we need early mount
+	if (cmd.skip_initramfs || access("/sepolicy", R_OK) != 0) {
+		char partname[32];
+		struct device dev;
+
+		// Mount sysfs
+		mkdir("/sys", 0755);
+		xmount("sysfs", "/sys", "sysfs", 0, NULL);
+
+		// Mount system
+		snprintf(partname, sizeof(partname), "system%s", cmd.slot);
+		setup_block(&dev, partname);
+		if (cmd.skip_initramfs) {
+			mkdir("/system_root", 0755);
+			xmount(dev.path, "/system_root", "ext4", MS_RDONLY, NULL);
+			int system_root = open("/system_root", O_RDONLY | O_CLOEXEC);
+
+			// Clone rootfs except /system
+			excl_list = (char *[]) { "system", NULL };
+			clone_dir(system_root, root);
+			close(system_root);
+
+			mkdir("/system", 0755);
+			xmount("/system_root/system", "/system", NULL, MS_BIND, NULL);
+		} else {
+			xmount(dev.path, "/system", "ext4", MS_RDONLY, NULL);
+		}
+
+		// Mount vendor
+		snprintf(partname, sizeof(partname), "vendor%s", cmd.slot);
+		if (setup_block(&dev, partname) == 0)
+			xmount(dev.path, "/vendor", "ext4", MS_RDONLY, NULL);
+	}
+
+	/* *************
+	 * Patch rootfs
+	 * *************/
 
 	// Only patch rootfs if not intended to run in recovery
 	if (access("/etc/recovery.fstab", F_OK) != 0) {
+		int overlay = open("/overlay", O_RDONLY | O_CLOEXEC);
 		mv_dir(overlay, root);
+		close(overlay);
+		rmdir("/overlay");
 
-		patch_ramdisk(root);
+		patch_ramdisk();
 		patch_sepolicy();
 
+		close(STDIN_FILENO);
+		close(STDOUT_FILENO);
+		close(STDERR_FILENO);
+
 		if (fork_dont_care() == 0) {
 			strcpy(argv[0], "magiskinit");
-			close(overlay);
 			close(root);
 			magisk_init_daemon();
 		}
 	}
 
 	// Clean up
-	close(overlay);
 	close(root);
+	if (!cmd.skip_initramfs)
+		umount("/system");
 	umount("/vendor");
-	rmdir("/overlay");
 
 	// Finally, give control back!
 	execv("/init", argv);

native/jni/core/socket.c

@@ -0,0 +1,155 @@
+/* socket.c - All socket related operations
+ */
+
+#include <fcntl.h>
+
+#include "daemon.h"
+#include "logging.h"
+#include "utils.h"
+#include "magisk.h"
+
+char socket_name[] = SOCKET_NAME;
+
+/* Setup the address and return socket fd */
+int setup_socket(struct sockaddr_un *sun) {
+	int fd = xsocket(AF_LOCAL, SOCK_STREAM | SOCK_CLOEXEC, 0);
+	memset(sun, 0, sizeof(*sun));
+	sun->sun_family = AF_LOCAL;
+	sun->sun_path[0] = '\0';
+	memcpy(sun->sun_path + 1, socket_name, sizeof(SOCKET_NAME));
+	return fd;
+}
+
+
+/*
+ * Receive a file descriptor from a Unix socket.
+ * Contributed by @mkasick
+ *
+ * Returns the file descriptor on success, or -1 if a file
+ * descriptor was not actually included in the message
+ *
+ * On error the function terminates by calling exit(-1)
+ */
+int recv_fd(int sockfd) {
+	// Need to receive data from the message, otherwise don't care about it.
+	char iovbuf;
+
+	struct iovec iov = {
+		.iov_base = &iovbuf,
+		.iov_len  = 1,
+	};
+
+	char cmsgbuf[CMSG_SPACE(sizeof(int))];
+
+	struct msghdr msg = {
+		.msg_iov        = &iov,
+		.msg_iovlen     = 1,
+		.msg_control    = cmsgbuf,
+		.msg_controllen = sizeof(cmsgbuf),
+	};
+
+	xrecvmsg(sockfd, &msg, MSG_WAITALL);
+
+	// Was a control message actually sent?
+	switch (msg.msg_controllen) {
+	case 0:
+		// No, so the file descriptor was closed and won't be used.
+		return -1;
+	case sizeof(cmsgbuf):
+		// Yes, grab the file descriptor from it.
+		break;
+	default:
+		goto error;
+	}
+
+	struct cmsghdr *cmsg = CMSG_FIRSTHDR(&msg);
+
+	if (cmsg             == NULL                  ||
+		cmsg->cmsg_len   != CMSG_LEN(sizeof(int)) ||
+		cmsg->cmsg_level != SOL_SOCKET            ||
+		cmsg->cmsg_type  != SCM_RIGHTS) {
+error:
+		LOGE("unable to read fd");
+		exit(-1);
+	}
+
+	return *(int *)CMSG_DATA(cmsg);
+}
+
+/*
+ * Send a file descriptor through a Unix socket.
+ * Contributed by @mkasick
+ *
+ * On error the function terminates by calling exit(-1)
+ *
+ * fd may be -1, in which case the dummy data is sent,
+ * but no control message with the FD is sent.
+ */
+void send_fd(int sockfd, int fd) {
+	// Need to send some data in the message, this will do.
+	struct iovec iov = {
+		.iov_base = "",
+		.iov_len  = 1,
+	};
+
+	struct msghdr msg = {
+		.msg_iov        = &iov,
+		.msg_iovlen     = 1,
+	};
+
+	char cmsgbuf[CMSG_SPACE(sizeof(int))];
+
+	if (fd != -1) {
+		// Is the file descriptor actually open?
+		if (fcntl(fd, F_GETFD) == -1) {
+			if (errno != EBADF) {
+				PLOGE("unable to send fd");
+			}
+			// It's closed, don't send a control message or sendmsg will EBADF.
+		} else {
+			// It's open, send the file descriptor in a control message.
+			msg.msg_control    = cmsgbuf;
+			msg.msg_controllen = sizeof(cmsgbuf);
+
+			struct cmsghdr *cmsg = CMSG_FIRSTHDR(&msg);
+
+			cmsg->cmsg_len   = CMSG_LEN(sizeof(int));
+			cmsg->cmsg_level = SOL_SOCKET;
+			cmsg->cmsg_type  = SCM_RIGHTS;
+
+			*(int *)CMSG_DATA(cmsg) = fd;
+		}
+	}
+
+	xsendmsg(sockfd, &msg, 0);
+}
+
+int read_int(int fd) {
+	int val;
+	xxread(fd, &val, sizeof(int));
+	return val;
+}
+
+void write_int(int fd, int val) {
+	if (fd < 0) return;
+	xwrite(fd, &val, sizeof(int));
+}
+
+char* read_string(int fd) {
+	int len = read_int(fd);
+	if (len > PATH_MAX || len < 0) {
+		LOGE("invalid string length %d", len);
+		exit(1);
+	}
+	char* val = xmalloc(sizeof(char) * (len + 1));
+	xxread(fd, val, len);
+	val[len] = '\0';
+	return val;
+}
+
+void write_string(int fd, const char* val) {
+	if (fd < 0) return;
+	int len = strlen(val);
+	write_int(fd, len);
+	xwrite(fd, val, len);
+}

native/jni/external/Android.mk

@@ -3,7 +3,7 @@ LOCAL_PATH:= $(call my-dir)
 # libsqlite.so (stub)
 include $(CLEAR_VARS)
 LOCAL_MODULE:= libsqlite
-LOCAL_C_INCLUDES := jni/external/include
+LOCAL_C_INCLUDES := $(EXT_PATH)/include
 LOCAL_SRC_FILES := stubs/sqlite3_stub.c
 include $(BUILD_SHARED_LIBRARY)
 
@@ -14,6 +14,20 @@ LOCAL_C_INCLUDES := $(LIBSELINUX)
 LOCAL_SRC_FILES := stubs/selinux_stub.c
 include $(BUILD_SHARED_LIBRARY)
 
+# libmincrypt.a
+include $(CLEAR_VARS)
+LOCAL_MODULE:= libmincrypt
+LOCAL_C_INCLUDES := $(EXT_PATH)/include
+LOCAL_SRC_FILES := \
+	mincrypt/dsa_sig.c \
+	mincrypt/p256.c \
+	mincrypt/p256_ec.c \
+	mincrypt/p256_ecdsa.c \
+	mincrypt/rsa.c \
+	mincrypt/sha.c \
+	mincrypt/sha256.c
+include $(BUILD_STATIC_LIBRARY)
+
 # libfdt.a
 include $(CLEAR_VARS)
 LOCAL_MODULE:= libfdt

native/jni/external/include/mincrypt/dsa_sig.h

@@ -0,0 +1,43 @@
+/*
+ * Copyright 2013 The Android Open Source Project
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * Neither the name of Google Inc. nor the names of its contributors may
+ *       be used to endorse or promote products derived from this software
+ *       without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY Google Inc. ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
+ * EVENT SHALL Google Inc. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef SYSTEM_CORE_INCLUDE_MINCRYPT_DSA_SIG_H_
+#define SYSTEM_CORE_INCLUDE_MINCRYPT_DSA_SIG_H_
+
+#include "mincrypt/p256.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+// Returns 0 if input sig is not a valid ASN.1 sequence
+int dsa_sig_unpack(unsigned char* sig, int sig_len, p256_int* r_int, p256_int* s_int);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* SYSTEM_CORE_INCLUDE_MINCRYPT_DSA_SIG_H_ */

native/jni/external/include/mincrypt/hash-internal.h

@@ -0,0 +1,63 @@
+/*
+ * Copyright 2007 The Android Open Source Project
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * Neither the name of Google Inc. nor the names of its contributors may
+ *       be used to endorse or promote products derived from this software
+ *       without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY Google Inc. ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
+ * EVENT SHALL Google Inc. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef SYSTEM_CORE_INCLUDE_MINCRYPT_HASH_INTERNAL_H_
+#define SYSTEM_CORE_INCLUDE_MINCRYPT_HASH_INTERNAL_H_
+
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif  // __cplusplus
+
+struct HASH_CTX;  // forward decl
+
+typedef struct HASH_VTAB {
+  void (* const init)(struct HASH_CTX*);
+  void (* const update)(struct HASH_CTX*, const void*, int);
+  const uint8_t* (* const final)(struct HASH_CTX*);
+  const uint8_t* (* const hash)(const void*, int, uint8_t*);
+  int size;
+} HASH_VTAB;
+
+typedef struct HASH_CTX {
+  const HASH_VTAB * f;
+  uint64_t count;
+  uint8_t buf[64];
+  uint32_t state[8];  // upto SHA2
+} HASH_CTX;
+
+#define HASH_init(ctx) (ctx)->f->init(ctx)
+#define HASH_update(ctx, data, len) (ctx)->f->update(ctx, data, len)
+#define HASH_final(ctx) (ctx)->f->final(ctx)
+#define HASH_hash(data, len, digest) (ctx)->f->hash(data, len, digest)
+#define HASH_size(ctx) (ctx)->f->size
+
+#ifdef __cplusplus
+}
+#endif  // __cplusplus
+
+#endif  // SYSTEM_CORE_INCLUDE_MINCRYPT_HASH_INTERNAL_H_

native/jni/external/include/mincrypt/p256.h

@@ -0,0 +1,162 @@
+/*
+ * Copyright 2013 The Android Open Source Project
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * Neither the name of Google Inc. nor the names of its contributors may
+ *       be used to endorse or promote products derived from this software
+ *       without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY Google Inc. ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
+ * EVENT SHALL Google Inc. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef SYSTEM_CORE_INCLUDE_MINCRYPT_LITE_P256_H_
+#define SYSTEM_CORE_INCLUDE_MINCRYPT_LITE_P256_H_
+
+// Collection of routines manipulating 256 bit unsigned integers.
+// Just enough to implement ecdsa-p256 and related algorithms.
+
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define P256_BITSPERDIGIT 32
+#define P256_NDIGITS 8
+#define P256_NBYTES 32
+
+typedef int p256_err;
+typedef uint32_t p256_digit;
+typedef int32_t p256_sdigit;
+typedef uint64_t p256_ddigit;
+typedef int64_t p256_sddigit;
+
+// Defining p256_int as struct to leverage struct assigment.
+typedef struct {
+  p256_digit a[P256_NDIGITS];
+} p256_int;
+
+extern const p256_int SECP256r1_n;  // Curve order
+extern const p256_int SECP256r1_p;  // Curve prime
+extern const p256_int SECP256r1_b;  // Curve param
+
+// Initialize a p256_int to zero.
+void p256_init(p256_int* a);
+
+// Clear a p256_int to zero.
+void p256_clear(p256_int* a);
+
+// Return bit. Index 0 is least significant.
+int p256_get_bit(const p256_int* a, int index);
+
+// b := a % MOD
+void p256_mod(
+    const p256_int* MOD,
+    const p256_int* a,
+    p256_int* b);
+
+// c := a * (top_b | b) % MOD
+void p256_modmul(
+    const p256_int* MOD,
+    const p256_int* a,
+    const p256_digit top_b,
+    const p256_int* b,
+    p256_int* c);
+
+// b := 1 / a % MOD
+// MOD best be SECP256r1_n
+void p256_modinv(
+    const p256_int* MOD,
+    const p256_int* a,
+    p256_int* b);
+
+// b := 1 / a % MOD
+// MOD best be SECP256r1_n
+// Faster than p256_modinv()
+void p256_modinv_vartime(
+    const p256_int* MOD,
+    const p256_int* a,
+    p256_int* b);
+
+// b := a << (n % P256_BITSPERDIGIT)
+// Returns the bits shifted out of most significant digit.
+p256_digit p256_shl(const p256_int* a, int n, p256_int* b);
+
+// b := a >> (n % P256_BITSPERDIGIT)
+void p256_shr(const p256_int* a, int n, p256_int* b);
+
+int p256_is_zero(const p256_int* a);
+int p256_is_odd(const p256_int* a);
+int p256_is_even(const p256_int* a);
+
+// Returns -1, 0 or 1.
+int p256_cmp(const p256_int* a, const p256_int *b);
+
+// c: = a - b
+// Returns -1 on borrow.
+int p256_sub(const p256_int* a, const p256_int* b, p256_int* c);
+
+// c := a + b
+// Returns 1 on carry.
+int p256_add(const p256_int* a, const p256_int* b, p256_int* c);
+
+// c := a + (single digit)b
+// Returns carry 1 on carry.
+int p256_add_d(const p256_int* a, p256_digit b, p256_int* c);
+
+// ec routines.
+
+// {out_x,out_y} := nG
+void p256_base_point_mul(const p256_int *n,
+                         p256_int *out_x,
+                         p256_int *out_y);
+
+// {out_x,out_y} := n{in_x,in_y}
+void p256_point_mul(const p256_int *n,
+                    const p256_int *in_x,
+                    const p256_int *in_y,
+                    p256_int *out_x,
+                    p256_int *out_y);
+
+// {out_x,out_y} := n1G + n2{in_x,in_y}
+void p256_points_mul_vartime(
+    const p256_int *n1, const p256_int *n2,
+    const p256_int *in_x, const p256_int *in_y,
+    p256_int *out_x, p256_int *out_y);
+
+// Return whether point {x,y} is on curve.
+int p256_is_valid_point(const p256_int* x, const p256_int* y);
+
+// Outputs big-endian binary form. No leading zero skips.
+void p256_to_bin(const p256_int* src, uint8_t dst[P256_NBYTES]);
+
+// Reads from big-endian binary form,
+// thus pre-pad with leading zeros if short.
+void p256_from_bin(const uint8_t src[P256_NBYTES], p256_int* dst);
+
+#define P256_DIGITS(x) ((x)->a)
+#define P256_DIGIT(x,y) ((x)->a[y])
+
+#define P256_ZERO {{0}}
+#define P256_ONE {{1}}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif  // SYSTEM_CORE_INCLUDE_MINCRYPT_LITE_P256_H_

native/jni/external/include/mincrypt/p256_ecdsa.h

@@ -0,0 +1,53 @@
+/*
+ * Copyright 2013 The Android Open Source Project
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * Neither the name of Google Inc. nor the names of its contributors may
+ *       be used to endorse or promote products derived from this software
+ *       without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY Google Inc. ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
+ * EVENT SHALL Google Inc. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef SYSTEM_CORE_INCLUDE_MINCRYPT_P256_ECDSA_H_
+#define SYSTEM_CORE_INCLUDE_MINCRYPT_P256_ECDSA_H_
+
+// Using current directory as relative include path here since
+// this code typically gets lifted into a variety of build systems
+// and directory structures.
+#include "p256.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+// Returns 0 if {r,s} is not a signature on message for
+// public key {key_x,key_y}.
+//
+// Note: message is a p256_int.
+// Convert from a binary string using p256_from_bin().
+int p256_ecdsa_verify(const p256_int* key_x,
+                      const p256_int* key_y,
+                      const p256_int* message,
+                      const p256_int* r, const p256_int* s);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif  // SYSTEM_CORE_INCLUDE_MINCRYPT_P256_ECDSA_H_

native/jni/external/include/mincrypt/rsa.h

@@ -0,0 +1,58 @@
+/* rsa.h
+**
+** Copyright 2008, The Android Open Source Project
+**
+** Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are met:
+**     * Redistributions of source code must retain the above copyright
+**       notice, this list of conditions and the following disclaimer.
+**     * Redistributions in binary form must reproduce the above copyright
+**       notice, this list of conditions and the following disclaimer in the
+**       documentation and/or other materials provided with the distribution.
+**     * Neither the name of Google Inc. nor the names of its contributors may
+**       be used to endorse or promote products derived from this software
+**       without specific prior written permission.
+**
+** THIS SOFTWARE IS PROVIDED BY Google Inc. ``AS IS'' AND ANY EXPRESS OR
+** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+** MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
+** EVENT SHALL Google Inc. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+** PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+** OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+** WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+** OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+** ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef SYSTEM_CORE_INCLUDE_MINCRYPT_RSA_H_
+#define SYSTEM_CORE_INCLUDE_MINCRYPT_RSA_H_
+
+#include <inttypes.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define RSANUMBYTES 256           /* 2048 bit key length */
+#define RSANUMWORDS (RSANUMBYTES / sizeof(uint32_t))
+
+typedef struct RSAPublicKey {
+    int len;                  /* Length of n[] in number of uint32_t */
+    uint32_t n0inv;           /* -1 / n[0] mod 2^32 */
+    uint32_t n[RSANUMWORDS];  /* modulus as little endian array */
+    uint32_t rr[RSANUMWORDS]; /* R^2 as little endian array */
+    int exponent;             /* 3 or 65537 */
+} RSAPublicKey;
+
+int RSA_verify(const RSAPublicKey *key,
+               const uint8_t* signature,
+               const int len,
+               const uint8_t* hash,
+               const int hash_len);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif // SYSTEM_CORE_INCLUDE_MINCRYPT_RSA_H_

native/jni/external/include/mincrypt/sha.h

@@ -0,0 +1,52 @@
+/*
+ * Copyright 2005 The Android Open Source Project
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * Neither the name of Google Inc. nor the names of its contributors may
+ *       be used to endorse or promote products derived from this software
+ *       without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY Google Inc. ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
+ * EVENT SHALL Google Inc. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#ifndef SYSTEM_CORE_INCLUDE_MINCRYPT_SHA1_H_
+#define SYSTEM_CORE_INCLUDE_MINCRYPT_SHA1_H_
+
+#include <stdint.h>
+#include "hash-internal.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif // __cplusplus
+
+typedef HASH_CTX SHA_CTX;
+
+void SHA_init(SHA_CTX* ctx);
+void SHA_update(SHA_CTX* ctx, const void* data, int len);
+const uint8_t* SHA_final(SHA_CTX* ctx);
+
+// Convenience method. Returns digest address.
+// NOTE: *digest needs to hold SHA_DIGEST_SIZE bytes.
+const uint8_t* SHA_hash(const void* data, int len, uint8_t* digest);
+
+#define SHA_DIGEST_SIZE 20
+
+#ifdef __cplusplus
+}
+#endif // __cplusplus
+
+#endif  // SYSTEM_CORE_INCLUDE_MINCRYPT_SHA1_H_

native/jni/external/include/mincrypt/sha256.h

@@ -0,0 +1,52 @@
+/*
+ * Copyright 2011 The Android Open Source Project
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * Neither the name of Google Inc. nor the names of its contributors may
+ *       be used to endorse or promote products derived from this software
+ *       without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY Google Inc. ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
+ * EVENT SHALL Google Inc. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef SYSTEM_CORE_INCLUDE_MINCRYPT_SHA256_H_
+#define SYSTEM_CORE_INCLUDE_MINCRYPT_SHA256_H_
+
+#include <stdint.h>
+#include "hash-internal.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif // __cplusplus
+
+typedef HASH_CTX SHA256_CTX;
+
+void SHA256_init(SHA256_CTX* ctx);
+void SHA256_update(SHA256_CTX* ctx, const void* data, int len);
+const uint8_t* SHA256_final(SHA256_CTX* ctx);
+
+// Convenience method. Returns digest address.
+const uint8_t* SHA256_hash(const void* data, int len, uint8_t* digest);
+
+#define SHA256_DIGEST_SIZE 32
+
+#ifdef __cplusplus
+}
+#endif // __cplusplus
+
+#endif  // SYSTEM_CORE_INCLUDE_MINCRYPT_SHA256_H_

native/jni/external/mincrypt/dsa_sig.c

@@ -0,0 +1,126 @@
+/*
+ * Copyright 2013 The Android Open Source Project
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * Neither the name of Google Inc. nor the names of its contributors may
+ *       be used to endorse or promote products derived from this software
+ *       without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY Google Inc. ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
+ * EVENT SHALL Google Inc. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <string.h>
+
+#include "mincrypt/dsa_sig.h"
+#include "mincrypt/p256.h"
+
+/**
+ * Trims off the leading zero bytes and copy it to a buffer aligning it to the end.
+ */
+static inline int trim_to_p256_bytes(unsigned char dst[P256_NBYTES], unsigned char *src,
+        int src_len) {
+    int dst_offset;
+    while (*src == '\0' && src_len > 0) {
+        src++;
+        src_len--;
+    }
+    if (src_len > P256_NBYTES || src_len < 1) {
+        return 0;
+    }
+    dst_offset = P256_NBYTES - src_len;
+    memset(dst, 0, dst_offset);
+    memcpy(dst + dst_offset, src, src_len);
+    return 1;
+}
+
+/**
+ * Unpacks the ASN.1 DSA signature sequence.
+ */
+int dsa_sig_unpack(unsigned char* sig, int sig_len, p256_int* r_int, p256_int* s_int) {
+    /*
+     * Structure is:
+     *   0x30 0xNN  SEQUENCE + s_length
+     *     0x02 0xNN  INTEGER + r_length
+     *       0xAA 0xBB ..   r_length bytes of "r" (offset 4)
+     *     0x02 0xNN  INTEGER + s_length
+     *       0xMM 0xNN ..   s_length bytes of "s" (offset 6 + r_len)
+     */
+    int seq_len;
+    unsigned char r_bytes[P256_NBYTES];
+    unsigned char s_bytes[P256_NBYTES];
+    int r_len;
+    int s_len;
+
+    memset(r_bytes, 0, sizeof(r_bytes));
+    memset(s_bytes, 0, sizeof(s_bytes));
+
+    /*
+     * Must have at least:
+     * 2 bytes sequence header and length
+     * 2 bytes R integer header and length
+     * 1 byte of R
+     * 2 bytes S integer header and length
+     * 1 byte of S
+     *
+     * 8 bytes total
+     */
+    if (sig_len < 8 || sig[0] != 0x30 || sig[2] != 0x02) {
+        return 0;
+    }
+
+    seq_len = sig[1];
+    if ((seq_len <= 0) || (seq_len + 2 != sig_len)) {
+        return 0;
+    }
+
+    r_len = sig[3];
+    /*
+     * Must have at least:
+     * 2 bytes for R header and length
+     * 2 bytes S integer header and length
+     * 1 byte of S
+     */
+    if ((r_len < 1) || (r_len > seq_len - 5) || (sig[4 + r_len] != 0x02)) {
+        return 0;
+    }
+    s_len = sig[5 + r_len];
+
+    /**
+     * Must have:
+     * 2 bytes for R header and length
+     * r_len bytes for R
+     * 2 bytes S integer header and length
+     */
+    if ((s_len < 1) || (s_len != seq_len - 4 - r_len)) {
+        return 0;
+    }
+
+    /*
+     * ASN.1 encoded integers are zero-padded for positive integers. Make sure we have
+     * a correctly-sized buffer and that the resulting integer isn't too large.
+     */
+    if (!trim_to_p256_bytes(r_bytes, &sig[4], r_len)
+            || !trim_to_p256_bytes(s_bytes, &sig[6 + r_len], s_len)) {
+        return 0;
+    }
+
+    p256_from_bin(r_bytes, r_int);
+    p256_from_bin(s_bytes, s_int);
+
+    return 1;
+}

native/jni/external/mincrypt/p256.c

@@ -0,0 +1,373 @@
+/*
+ * Copyright 2013 The Android Open Source Project
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * Neither the name of Google Inc. nor the names of its contributors may
+ *       be used to endorse or promote products derived from this software
+ *       without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY Google Inc. ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
+ * EVENT SHALL Google Inc. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+// This is an implementation of the P256 elliptic curve group. It's written to
+// be portable 32-bit, although it's still constant-time.
+//
+// WARNING: Implementing these functions in a constant-time manner is far from
+//          obvious. Be careful when touching this code.
+//
+// See http://www.imperialviolet.org/2010/12/04/ecc.html ([1]) for background.
+
+#include <assert.h>
+#include <stdint.h>
+#include <string.h>
+#include <stdio.h>
+
+#include "mincrypt/p256.h"
+
+const p256_int SECP256r1_n =  // curve order
+  {{0xfc632551, 0xf3b9cac2, 0xa7179e84, 0xbce6faad, -1, -1, 0, -1}};
+
+const p256_int SECP256r1_p =  // curve field size
+  {{-1, -1, -1, 0, 0, 0, 1, -1 }};
+
+const p256_int SECP256r1_b =  // curve b
+  {{0x27d2604b, 0x3bce3c3e, 0xcc53b0f6, 0x651d06b0,
+    0x769886bc, 0xb3ebbd55, 0xaa3a93e7, 0x5ac635d8}};
+
+void p256_init(p256_int* a) {
+  memset(a, 0, sizeof(*a));
+}
+
+void p256_clear(p256_int* a) { p256_init(a); }
+
+int p256_get_bit(const p256_int* scalar, int bit) {
+  return (P256_DIGIT(scalar, bit / P256_BITSPERDIGIT)
+              >> (bit & (P256_BITSPERDIGIT - 1))) & 1;
+}
+
+int p256_is_zero(const p256_int* a) {
+  int i, result = 0;
+  for (i = 0; i < P256_NDIGITS; ++i) result |= P256_DIGIT(a, i);
+  return !result;
+}
+
+// top, c[] += a[] * b
+// Returns new top
+static p256_digit mulAdd(const p256_int* a,
+                         p256_digit b,
+                         p256_digit top,
+                         p256_digit* c) {
+  int i;
+  p256_ddigit carry = 0;
+
+  for (i = 0; i < P256_NDIGITS; ++i) {
+    carry += *c;
+    carry += (p256_ddigit)P256_DIGIT(a, i) * b;
+    *c++ = (p256_digit)carry;
+    carry >>= P256_BITSPERDIGIT;
+  }
+  return top + (p256_digit)carry;
+}
+
+// top, c[] -= top_a, a[]
+static p256_digit subTop(p256_digit top_a,
+                         const p256_digit* a,
+                         p256_digit top_c,
+                         p256_digit* c) {
+  int i;
+  p256_sddigit borrow = 0;
+
+  for (i = 0; i < P256_NDIGITS; ++i) {
+    borrow += *c;
+    borrow -= *a++;
+    *c++ = (p256_digit)borrow;
+    borrow >>= P256_BITSPERDIGIT;
+  }
+  borrow += top_c;
+  borrow -= top_a;
+  top_c = (p256_digit)borrow;
+  assert((borrow >> P256_BITSPERDIGIT) == 0);
+  return top_c;
+}
+
+// top, c[] -= MOD[] & mask (0 or -1)
+// returns new top.
+static p256_digit subM(const p256_int* MOD,
+                       p256_digit top,
+                       p256_digit* c,
+                       p256_digit mask) {
+  int i;
+  p256_sddigit borrow = 0;
+  for (i = 0; i < P256_NDIGITS; ++i) {
+    borrow += *c;
+    borrow -= P256_DIGIT(MOD, i) & mask;
+    *c++ = (p256_digit)borrow;
+    borrow >>= P256_BITSPERDIGIT;
+  }
+  return top + (p256_digit)borrow;
+}
+
+// top, c[] += MOD[] & mask (0 or -1)
+// returns new top.
+static p256_digit addM(const p256_int* MOD,
+                       p256_digit top,
+                       p256_digit* c,
+                       p256_digit mask) {
+  int i;
+  p256_ddigit carry = 0;
+  for (i = 0; i < P256_NDIGITS; ++i) {
+    carry += *c;
+    carry += P256_DIGIT(MOD, i) & mask;
+    *c++ = (p256_digit)carry;
+    carry >>= P256_BITSPERDIGIT;
+  }
+  return top + (p256_digit)carry;
+}
+
+// c = a * b mod MOD. c can be a and/or b.
+void p256_modmul(const p256_int* MOD,
+                 const p256_int* a,
+                 const p256_digit top_b,
+                 const p256_int* b,
+                 p256_int* c) {
+  p256_digit tmp[P256_NDIGITS * 2 + 1] = { 0 };
+  p256_digit top = 0;
+  int i;
+
+  // Multiply/add into tmp.
+  for (i = 0; i < P256_NDIGITS; ++i) {
+    if (i) tmp[i + P256_NDIGITS - 1] = top;
+    top = mulAdd(a, P256_DIGIT(b, i), 0, tmp + i);
+  }
+
+  // Multiply/add top digit
+  tmp[i + P256_NDIGITS - 1] = top;
+  top = mulAdd(a, top_b, 0, tmp + i);
+
+  // Reduce tmp, digit by digit.
+  for (; i >= 0; --i) {
+    p256_digit reducer[P256_NDIGITS] = { 0 };
+    p256_digit top_reducer;
+
+    // top can be any value at this point.
+    // Guestimate reducer as top * MOD, since msw of MOD is -1.
+    top_reducer = mulAdd(MOD, top, 0, reducer);
+
+    // Subtract reducer from top | tmp.
+    top = subTop(top_reducer, reducer, top, tmp + i);
+
+    // top is now either 0 or 1. Make it 0, fixed-timing.
+    assert(top <= 1);
+
+    top = subM(MOD, top, tmp + i, ~(top - 1));
+
+    assert(top == 0);
+
+    // We have now reduced the top digit off tmp. Fetch new top digit.
+    top = tmp[i + P256_NDIGITS - 1];
+  }
+
+  // tmp might still be larger than MOD, yet same bit length.
+  // Make sure it is less, fixed-timing.
+  addM(MOD, 0, tmp, subM(MOD, 0, tmp, -1));
+
+  memcpy(c, tmp, P256_NBYTES);
+}
+int p256_is_odd(const p256_int* a) { return P256_DIGIT(a, 0) & 1; }
+int p256_is_even(const p256_int* a) { return !(P256_DIGIT(a, 0) & 1); }
+
+p256_digit p256_shl(const p256_int* a, int n, p256_int* b) {
+  int i;
+  p256_digit top = P256_DIGIT(a, P256_NDIGITS - 1);
+
+  n %= P256_BITSPERDIGIT;
+  for (i = P256_NDIGITS - 1; i > 0; --i) {
+    p256_digit accu = (P256_DIGIT(a, i) << n);
+    accu |= (P256_DIGIT(a, i - 1) >> (P256_BITSPERDIGIT - n));
+    P256_DIGIT(b, i) = accu;
+  }
+  P256_DIGIT(b, i) = (P256_DIGIT(a, i) << n);
+
+  top = (p256_digit)((((p256_ddigit)top) << n) >> P256_BITSPERDIGIT);
+
+  return top;
+}
+
+void p256_shr(const p256_int* a, int n, p256_int* b) {
+  int i;
+
+  n %= P256_BITSPERDIGIT;
+  for (i = 0; i < P256_NDIGITS - 1; ++i) {
+    p256_digit accu = (P256_DIGIT(a, i) >> n);
+    accu |= (P256_DIGIT(a, i + 1) << (P256_BITSPERDIGIT - n));
+    P256_DIGIT(b, i) = accu;
+  }
+  P256_DIGIT(b, i) = (P256_DIGIT(a, i) >> n);
+}
+
+static void p256_shr1(const p256_int* a, int highbit, p256_int* b) {
+  int i;
+
+  for (i = 0; i < P256_NDIGITS - 1; ++i) {
+    p256_digit accu = (P256_DIGIT(a, i) >> 1);
+    accu |= (P256_DIGIT(a, i + 1) << (P256_BITSPERDIGIT - 1));
+    P256_DIGIT(b, i) = accu;
+  }
+  P256_DIGIT(b, i) = (P256_DIGIT(a, i) >> 1) |
+      (highbit << (P256_BITSPERDIGIT - 1));
+}
+
+// Return -1, 0, 1 for a < b, a == b or a > b respectively.
+int p256_cmp(const p256_int* a, const p256_int* b) {
+  int i;
+  p256_sddigit borrow = 0;
+  p256_digit notzero = 0;
+
+  for (i = 0; i < P256_NDIGITS; ++i) {
+    borrow += (p256_sddigit)P256_DIGIT(a, i) - P256_DIGIT(b, i);
+    // Track whether any result digit is ever not zero.
+    // Relies on !!(non-zero) evaluating to 1, e.g., !!(-1) evaluating to 1.
+    notzero |= !!((p256_digit)borrow);
+    borrow >>= P256_BITSPERDIGIT;
+  }
+  return (int)borrow | notzero;
+}
+
+// c = a - b. Returns borrow: 0 or -1.
+int p256_sub(const p256_int* a, const p256_int* b, p256_int* c) {
+  int i;
+  p256_sddigit borrow = 0;
+
+  for (i = 0; i < P256_NDIGITS; ++i) {
+    borrow += (p256_sddigit)P256_DIGIT(a, i) - P256_DIGIT(b, i);
+    if (c) P256_DIGIT(c, i) = (p256_digit)borrow;
+    borrow >>= P256_BITSPERDIGIT;
+  }
+  return (int)borrow;
+}
+
+// c = a + b. Returns carry: 0 or 1.
+int p256_add(const p256_int* a, const p256_int* b, p256_int* c) {
+  int i;
+  p256_ddigit carry = 0;
+
+  for (i = 0; i < P256_NDIGITS; ++i) {
+    carry += (p256_ddigit)P256_DIGIT(a, i) + P256_DIGIT(b, i);
+    if (c) P256_DIGIT(c, i) = (p256_digit)carry;
+    carry >>= P256_BITSPERDIGIT;
+  }
+  return (int)carry;
+}
+
+// b = a + d. Returns carry, 0 or 1.
+int p256_add_d(const p256_int* a, p256_digit d, p256_int* b) {
+  int i;
+  p256_ddigit carry = d;
+
+  for (i = 0; i < P256_NDIGITS; ++i) {
+    carry += (p256_ddigit)P256_DIGIT(a, i);
+    if (b) P256_DIGIT(b, i) = (p256_digit)carry;
+    carry >>= P256_BITSPERDIGIT;
+  }
+  return (int)carry;
+}
+
+// b = 1/a mod MOD, binary euclid.
+void p256_modinv_vartime(const p256_int* MOD,
+                         const p256_int* a,
+                         p256_int* b) {
+  p256_int R = P256_ZERO;
+  p256_int S = P256_ONE;
+  p256_int U = *MOD;
+  p256_int V = *a;
+
+  for (;;) {
+    if (p256_is_even(&U)) {
+      p256_shr1(&U, 0, &U);
+      if (p256_is_even(&R)) {
+        p256_shr1(&R, 0, &R);
+      } else {
+        // R = (R+MOD)/2
+        p256_shr1(&R, p256_add(&R, MOD, &R), &R);
+      }
+    } else if (p256_is_even(&V)) {
+      p256_shr1(&V, 0, &V);
+      if (p256_is_even(&S)) {
+        p256_shr1(&S, 0, &S);
+      } else {
+        // S = (S+MOD)/2
+        p256_shr1(&S, p256_add(&S, MOD, &S) , &S);
+      }
+    } else {  // U,V both odd.
+      if (!p256_sub(&V, &U, NULL)) {
+        p256_sub(&V, &U, &V);
+        if (p256_sub(&S, &R, &S)) p256_add(&S, MOD, &S);
+        if (p256_is_zero(&V)) break;  // done.
+      } else {
+        p256_sub(&U, &V, &U);
+        if (p256_sub(&R, &S, &R)) p256_add(&R, MOD, &R);
+      }
+    }
+  }
+
+  p256_mod(MOD, &R, b);
+}
+
+void p256_mod(const p256_int* MOD,
+              const p256_int* in,
+              p256_int* out) {
+  if (out != in) *out = *in;
+  addM(MOD, 0, P256_DIGITS(out), subM(MOD, 0, P256_DIGITS(out), -1));
+}
+
+// Verify y^2 == x^3 - 3x + b mod p
+// and 0 < x < p and 0 < y < p
+int p256_is_valid_point(const p256_int* x, const p256_int* y) {
+  p256_int y2, x3;
+
+  if (p256_cmp(&SECP256r1_p, x) <= 0 ||
+      p256_cmp(&SECP256r1_p, y) <= 0 ||
+      p256_is_zero(x) ||
+      p256_is_zero(y)) return 0;
+
+  p256_modmul(&SECP256r1_p, y, 0, y, &y2);  // y^2
+
+  p256_modmul(&SECP256r1_p, x, 0, x, &x3);  // x^2
+  p256_modmul(&SECP256r1_p, x, 0, &x3, &x3);  // x^3
+  if (p256_sub(&x3, x, &x3)) p256_add(&x3, &SECP256r1_p, &x3);  // x^3 - x
+  if (p256_sub(&x3, x, &x3)) p256_add(&x3, &SECP256r1_p, &x3);  // x^3 - 2x
+  if (p256_sub(&x3, x, &x3)) p256_add(&x3, &SECP256r1_p, &x3);  // x^3 - 3x
+  if (p256_add(&x3, &SECP256r1_b, &x3))  // x^3 - 3x + b
+    p256_sub(&x3, &SECP256r1_p, &x3);
+
+  return p256_cmp(&y2, &x3) == 0;
+}
+
+void p256_from_bin(const uint8_t src[P256_NBYTES], p256_int* dst) {
+  int i;
+  const uint8_t* p = &src[0];
+
+  for (i = P256_NDIGITS - 1; i >= 0; --i) {
+    P256_DIGIT(dst, i) =
+        (p[0] << 24) |
+        (p[1] << 16) |
+        (p[2] << 8) |
+        p[3];
+    p += 4;
+  }
+}

native/jni/external/mincrypt/p256_ecdsa.c

@@ -0,0 +1,56 @@
+/*
+ * Copyright 2013 The Android Open Source Project
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * Neither the name of Google Inc. nor the names of its contributors may
+ *       be used to endorse or promote products derived from this software
+ *       without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY Google Inc. ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
+ * EVENT SHALL Google Inc. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <string.h>
+
+#include "mincrypt/p256_ecdsa.h"
+#include "mincrypt/p256.h"
+
+int p256_ecdsa_verify(const p256_int* key_x, const p256_int* key_y,
+                      const p256_int* message,
+                      const p256_int* r, const p256_int* s) {
+  p256_int u, v;
+
+  // Check public key.
+  if (!p256_is_valid_point(key_x, key_y)) return 0;
+
+  // Check r and s are != 0 % n.
+  p256_mod(&SECP256r1_n, r, &u);
+  p256_mod(&SECP256r1_n, s, &v);
+  if (p256_is_zero(&u) || p256_is_zero(&v)) return 0;
+
+  p256_modinv_vartime(&SECP256r1_n, s, &v);
+  p256_modmul(&SECP256r1_n, message, 0, &v, &u);  // message / s % n
+  p256_modmul(&SECP256r1_n, r, 0, &v, &v);  // r / s % n
+
+  p256_points_mul_vartime(&u, &v,
+                          key_x, key_y,
+                          &u, &v);
+
+  p256_mod(&SECP256r1_n, &u, &u);  // (x coord % p) % n
+  return p256_cmp(r, &u) == 0;
+}
+

native/jni/external/mincrypt/rsa.c

@@ -0,0 +1,308 @@
+/* rsa.c
+**
+** Copyright 2012, The Android Open Source Project
+**
+** Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are met:
+**     * Redistributions of source code must retain the above copyright
+**       notice, this list of conditions and the following disclaimer.
+**     * Redistributions in binary form must reproduce the above copyright
+**       notice, this list of conditions and the following disclaimer in the
+**       documentation and/or other materials provided with the distribution.
+**     * Neither the name of Google Inc. nor the names of its contributors may
+**       be used to endorse or promote products derived from this software
+**       without specific prior written permission.
+**
+** THIS SOFTWARE IS PROVIDED BY Google Inc. ``AS IS'' AND ANY EXPRESS OR
+** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+** MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
+** EVENT SHALL Google Inc. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+** PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+** OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+** WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+** OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+** ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#include "mincrypt/rsa.h"
+#include "mincrypt/sha.h"
+#include "mincrypt/sha256.h"
+
+// a[] -= mod
+static void subM(const RSAPublicKey* key,
+                 uint32_t* a) {
+    int64_t A = 0;
+    int i;
+    for (i = 0; i < key->len; ++i) {
+        A += (uint64_t)a[i] - key->n[i];
+        a[i] = (uint32_t)A;
+        A >>= 32;
+    }
+}
+
+// return a[] >= mod
+static int geM(const RSAPublicKey* key,
+               const uint32_t* a) {
+    int i;
+    for (i = key->len; i;) {
+        --i;
+        if (a[i] < key->n[i]) return 0;
+        if (a[i] > key->n[i]) return 1;
+    }
+    return 1;  // equal
+}
+
+// montgomery c[] += a * b[] / R % mod
+static void montMulAdd(const RSAPublicKey* key,
+                       uint32_t* c,
+                       const uint32_t a,
+                       const uint32_t* b) {
+    uint64_t A = (uint64_t)a * b[0] + c[0];
+    uint32_t d0 = (uint32_t)A * key->n0inv;
+    uint64_t B = (uint64_t)d0 * key->n[0] + (uint32_t)A;
+    int i;
+
+    for (i = 1; i < key->len; ++i) {
+        A = (A >> 32) + (uint64_t)a * b[i] + c[i];
+        B = (B >> 32) + (uint64_t)d0 * key->n[i] + (uint32_t)A;
+        c[i - 1] = (uint32_t)B;
+    }
+
+    A = (A >> 32) + (B >> 32);
+
+    c[i - 1] = (uint32_t)A;
+
+    if (A >> 32) {
+        subM(key, c);
+    }
+}
+
+// montgomery c[] = a[] * b[] / R % mod
+static void montMul(const RSAPublicKey* key,
+                    uint32_t* c,
+                    const uint32_t* a,
+                    const uint32_t* b) {
+    int i;
+    for (i = 0; i < key->len; ++i) {
+        c[i] = 0;
+    }
+    for (i = 0; i < key->len; ++i) {
+        montMulAdd(key, c, a[i], b);
+    }
+}
+
+// In-place public exponentiation.
+// Input and output big-endian byte array in inout.
+static void modpow(const RSAPublicKey* key,
+                   uint8_t* inout) {
+    uint32_t a[RSANUMWORDS];
+    uint32_t aR[RSANUMWORDS];
+    uint32_t aaR[RSANUMWORDS];
+    uint32_t* aaa = 0;
+    int i;
+
+    // Convert from big endian byte array to little endian word array.
+    for (i = 0; i < key->len; ++i) {
+        uint32_t tmp =
+            (inout[((key->len - 1 - i) * 4) + 0] << 24) |
+            (inout[((key->len - 1 - i) * 4) + 1] << 16) |
+            (inout[((key->len - 1 - i) * 4) + 2] << 8) |
+            (inout[((key->len - 1 - i) * 4) + 3] << 0);
+        a[i] = tmp;
+    }
+
+    if (key->exponent == 65537) {
+        aaa = aaR;  // Re-use location.
+        montMul(key, aR, a, key->rr);  // aR = a * RR / R mod M
+        for (i = 0; i < 16; i += 2) {
+            montMul(key, aaR, aR, aR);  // aaR = aR * aR / R mod M
+            montMul(key, aR, aaR, aaR);  // aR = aaR * aaR / R mod M
+        }
+        montMul(key, aaa, aR, a);  // aaa = aR * a / R mod M
+    } else if (key->exponent == 3) {
+        aaa = aR;  // Re-use location.
+        montMul(key, aR, a, key->rr);  /* aR = a * RR / R mod M   */
+        montMul(key, aaR, aR, aR);     /* aaR = aR * aR / R mod M */
+        montMul(key, aaa, aaR, a);     /* aaa = aaR * a / R mod M */
+    }
+
+    // Make sure aaa < mod; aaa is at most 1x mod too large.
+    if (geM(key, aaa)) {
+        subM(key, aaa);
+    }
+
+    // Convert to bigendian byte array
+    for (i = key->len - 1; i >= 0; --i) {
+        uint32_t tmp = aaa[i];
+        *inout++ = tmp >> 24;
+        *inout++ = tmp >> 16;
+        *inout++ = tmp >> 8;
+        *inout++ = tmp >> 0;
+    }
+}
+
+// Expected PKCS1.5 signature padding bytes, for a keytool RSA signature.
+// Has the 0-length optional parameter encoded in the ASN1 (as opposed to the
+// other flavor which omits the optional parameter entirely). This code does not
+// accept signatures without the optional parameter.
+
+/*
+static const uint8_t sha_padding[RSANUMBYTES] = {
+    0x00, 0x01, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0x00, 0x30, 0x21, 0x30,
+    0x09, 0x06, 0x05, 0x2b, 0x0e, 0x03, 0x02, 0x1a,
+    0x05, 0x00, 0x04, 0x14,
+
+    // 20 bytes of hash go here.
+    0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
+};
+*/
+
+// SHA-1 of PKCS1.5 signature sha_padding for 2048 bit, as above.
+// At the location of the bytes of the hash all 00 are hashed.
+static const uint8_t kExpectedPadShaRsa2048[SHA_DIGEST_SIZE] = {
+    0xdc, 0xbd, 0xbe, 0x42, 0xd5, 0xf5, 0xa7, 0x2e,
+    0x6e, 0xfc, 0xf5, 0x5d, 0xaf, 0x9d, 0xea, 0x68,
+    0x7c, 0xfb, 0xf1, 0x67
+};
+
+/*
+static const uint8_t sha256_padding[RSANUMBYTES] = {
+    0x00, 0x01, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0x00, 0x30, 0x31, 0x30,
+    0x0d, 0x06, 0x09, 0x60, 0x86, 0x48, 0x01, 0x65,
+    0x03, 0x04, 0x02, 0x01, 0x05, 0x00, 0x04, 0x20,
+
+    // 32 bytes of hash go here.
+    0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+    0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+};
+*/
+
+// SHA-256 of PKCS1.5 signature sha256_padding for 2048 bit, as above.
+// At the location of the bytes of the hash all 00 are hashed.
+static const uint8_t kExpectedPadSha256Rsa2048[SHA256_DIGEST_SIZE] = {
+    0xab, 0x28, 0x8d, 0x8a, 0xd7, 0xd9, 0x59, 0x92,
+    0xba, 0xcc, 0xf8, 0x67, 0x20, 0xe1, 0x15, 0x2e,
+    0x39, 0x8d, 0x80, 0x36, 0xd6, 0x6f, 0xf0, 0xfd,
+    0x90, 0xe8, 0x7d, 0x8b, 0xe1, 0x7c, 0x87, 0x59,
+};
+
+// Verify a 2048-bit RSA PKCS1.5 signature against an expected hash.
+// Both e=3 and e=65537 are supported.  hash_len may be
+// SHA_DIGEST_SIZE (== 20) to indicate a SHA-1 hash, or
+// SHA256_DIGEST_SIZE (== 32) to indicate a SHA-256 hash.  No other
+// values are supported.
+//
+// Returns 1 on successful verification, 0 on failure.
+int RSA_verify(const RSAPublicKey *key,
+               const uint8_t *signature,
+               const int len,
+               const uint8_t *hash,
+               const int hash_len) {
+    uint8_t buf[RSANUMBYTES];
+    int i;
+    const uint8_t* padding_hash;
+
+    if (key->len != RSANUMWORDS) {
+        return 0;  // Wrong key passed in.
+    }
+
+    if (len != sizeof(buf)) {
+        return 0;  // Wrong input length.
+    }
+
+    if (hash_len != SHA_DIGEST_SIZE &&
+        hash_len != SHA256_DIGEST_SIZE) {
+        return 0;  // Unsupported hash.
+    }
+
+    if (key->exponent != 3 && key->exponent != 65537) {
+        return 0;  // Unsupported exponent.
+    }
+
+    for (i = 0; i < len; ++i) {  // Copy input to local workspace.
+        buf[i] = signature[i];
+    }
+
+    modpow(key, buf);  // In-place exponentiation.
+
+    // Xor sha portion, so it all becomes 00 iff equal.
+    for (i = len - hash_len; i < len; ++i) {
+        buf[i] ^= *hash++;
+    }
+
+    // Hash resulting buf, in-place.
+    switch (hash_len) {
+        case SHA_DIGEST_SIZE:
+            padding_hash = kExpectedPadShaRsa2048;
+            SHA_hash(buf, len, buf);
+            break;
+        case SHA256_DIGEST_SIZE:
+            padding_hash = kExpectedPadSha256Rsa2048;
+            SHA256_hash(buf, len, buf);
+            break;
+        default:
+            return 0;
+    }
+
+    // Compare against expected hash value.
+    for (i = 0; i < hash_len; ++i) {
+        if (buf[i] != padding_hash[i]) {
+            return 0;
+        }
+    }
+
+    return 1;  // All checked out OK.
+}

native/jni/external/mincrypt/sha.c

@@ -0,0 +1,155 @@
+/* sha.c
+**
+** Copyright 2013, The Android Open Source Project
+**
+** Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are met:
+**     * Redistributions of source code must retain the above copyright
+**       notice, this list of conditions and the following disclaimer.
+**     * Redistributions in binary form must reproduce the above copyright
+**       notice, this list of conditions and the following disclaimer in the
+**       documentation and/or other materials provided with the distribution.
+**     * Neither the name of Google Inc. nor the names of its contributors may
+**       be used to endorse or promote products derived from this software
+**       without specific prior written permission.
+**
+** THIS SOFTWARE IS PROVIDED BY Google Inc. ``AS IS'' AND ANY EXPRESS OR
+** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+** MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
+** EVENT SHALL Google Inc. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+** PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+** OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+** WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+** OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+** ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+// Optimized for minimal code size.
+
+#include "mincrypt/sha.h"
+
+#include <stdio.h>
+#include <string.h>
+#include <stdint.h>
+
+#define rol(bits, value) (((value) << (bits)) | ((value) >> (32 - (bits))))
+
+static void SHA1_Transform(SHA_CTX* ctx) {
+    uint32_t W[80];
+    uint32_t A, B, C, D, E;
+    uint8_t* p = ctx->buf;
+    int t;
+
+    for(t = 0; t < 16; ++t) {
+        uint32_t tmp =  *p++ << 24;
+        tmp |= *p++ << 16;
+        tmp |= *p++ << 8;
+        tmp |= *p++;
+        W[t] = tmp;
+    }
+
+    for(; t < 80; t++) {
+        W[t] = rol(1,W[t-3] ^ W[t-8] ^ W[t-14] ^ W[t-16]);
+    }
+
+    A = ctx->state[0];
+    B = ctx->state[1];
+    C = ctx->state[2];
+    D = ctx->state[3];
+    E = ctx->state[4];
+
+    for(t = 0; t < 80; t++) {
+        uint32_t tmp = rol(5,A) + E + W[t];
+
+        if (t < 20)
+            tmp += (D^(B&(C^D))) + 0x5A827999;
+        else if ( t < 40)
+            tmp += (B^C^D) + 0x6ED9EBA1;
+        else if ( t < 60)
+            tmp += ((B&C)|(D&(B|C))) + 0x8F1BBCDC;
+        else
+            tmp += (B^C^D) + 0xCA62C1D6;
+
+        E = D;
+        D = C;
+        C = rol(30,B);
+        B = A;
+        A = tmp;
+    }
+
+    ctx->state[0] += A;
+    ctx->state[1] += B;
+    ctx->state[2] += C;
+    ctx->state[3] += D;
+    ctx->state[4] += E;
+}
+
+static const HASH_VTAB SHA_VTAB = {
+    SHA_init,
+    SHA_update,
+    SHA_final,
+    SHA_hash,
+    SHA_DIGEST_SIZE
+};
+
+void SHA_init(SHA_CTX* ctx) {
+    ctx->f = &SHA_VTAB;
+    ctx->state[0] = 0x67452301;
+    ctx->state[1] = 0xEFCDAB89;
+    ctx->state[2] = 0x98BADCFE;
+    ctx->state[3] = 0x10325476;
+    ctx->state[4] = 0xC3D2E1F0;
+    ctx->count = 0;
+}
+
+
+void SHA_update(SHA_CTX* ctx, const void* data, int len) {
+    int i = (int) (ctx->count & 63);
+    const uint8_t* p = (const uint8_t*)data;
+
+    ctx->count += len;
+
+    while (len--) {
+        ctx->buf[i++] = *p++;
+        if (i == 64) {
+            SHA1_Transform(ctx);
+            i = 0;
+        }
+    }
+}
+
+
+const uint8_t* SHA_final(SHA_CTX* ctx) {
+    uint8_t *p = ctx->buf;
+    uint64_t cnt = ctx->count * 8;
+    int i;
+
+    SHA_update(ctx, (uint8_t*)"\x80", 1);
+    while ((ctx->count & 63) != 56) {
+        SHA_update(ctx, (uint8_t*)"\0", 1);
+    }
+    for (i = 0; i < 8; ++i) {
+        uint8_t tmp = (uint8_t) (cnt >> ((7 - i) * 8));
+        SHA_update(ctx, &tmp, 1);
+    }
+
+    for (i = 0; i < 5; i++) {
+        uint32_t tmp = ctx->state[i];
+        *p++ = tmp >> 24;
+        *p++ = tmp >> 16;
+        *p++ = tmp >> 8;
+        *p++ = tmp >> 0;
+    }
+
+    return ctx->buf;
+}
+
+/* Convenience function */
+const uint8_t* SHA_hash(const void* data, int len, uint8_t* digest) {
+    SHA_CTX ctx;
+    SHA_init(&ctx);
+    SHA_update(&ctx, data, len);
+    memcpy(digest, SHA_final(&ctx), SHA_DIGEST_SIZE);
+    return digest;
+}

native/jni/external/mincrypt/sha256.c

@@ -0,0 +1,184 @@
+/* sha256.c
+**
+** Copyright 2013, The Android Open Source Project
+**
+** Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are met:
+**     * Redistributions of source code must retain the above copyright
+**       notice, this list of conditions and the following disclaimer.
+**     * Redistributions in binary form must reproduce the above copyright
+**       notice, this list of conditions and the following disclaimer in the
+**       documentation and/or other materials provided with the distribution.
+**     * Neither the name of Google Inc. nor the names of its contributors may
+**       be used to endorse or promote products derived from this software
+**       without specific prior written permission.
+**
+** THIS SOFTWARE IS PROVIDED BY Google Inc. ``AS IS'' AND ANY EXPRESS OR
+** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+** MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
+** EVENT SHALL Google Inc. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+** PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+** OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+** WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+** OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+** ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+// Optimized for minimal code size.
+
+#include "mincrypt/sha256.h"
+
+#include <stdio.h>
+#include <string.h>
+#include <stdint.h>
+
+#define ror(value, bits) (((value) >> (bits)) | ((value) << (32 - (bits))))
+#define shr(value, bits) ((value) >> (bits))
+
+static const uint32_t K[64] = {
+    0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5,
+    0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5,
+    0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3,
+    0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174,
+    0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc,
+    0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,
+    0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7,
+    0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967,
+    0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13,
+    0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85,
+    0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3,
+    0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,
+    0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5,
+    0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3,
+    0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208,
+    0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2 };
+
+static void SHA256_Transform(SHA256_CTX* ctx) {
+    uint32_t W[64];
+    uint32_t A, B, C, D, E, F, G, H;
+    uint8_t* p = ctx->buf;
+    int t;
+
+    for(t = 0; t < 16; ++t) {
+        uint32_t tmp =  *p++ << 24;
+        tmp |= *p++ << 16;
+        tmp |= *p++ << 8;
+        tmp |= *p++;
+        W[t] = tmp;
+    }
+
+    for(; t < 64; t++) {
+        uint32_t s0 = ror(W[t-15], 7) ^ ror(W[t-15], 18) ^ shr(W[t-15], 3);
+        uint32_t s1 = ror(W[t-2], 17) ^ ror(W[t-2], 19) ^ shr(W[t-2], 10);
+        W[t] = W[t-16] + s0 + W[t-7] + s1;
+    }
+
+    A = ctx->state[0];
+    B = ctx->state[1];
+    C = ctx->state[2];
+    D = ctx->state[3];
+    E = ctx->state[4];
+    F = ctx->state[5];
+    G = ctx->state[6];
+    H = ctx->state[7];
+
+    for(t = 0; t < 64; t++) {
+        uint32_t s0 = ror(A, 2) ^ ror(A, 13) ^ ror(A, 22);
+        uint32_t maj = (A & B) ^ (A & C) ^ (B & C);
+        uint32_t t2 = s0 + maj;
+        uint32_t s1 = ror(E, 6) ^ ror(E, 11) ^ ror(E, 25);
+        uint32_t ch = (E & F) ^ ((~E) & G);
+        uint32_t t1 = H + s1 + ch + K[t] + W[t];
+
+        H = G;
+        G = F;
+        F = E;
+        E = D + t1;
+        D = C;
+        C = B;
+        B = A;
+        A = t1 + t2;
+    }
+
+    ctx->state[0] += A;
+    ctx->state[1] += B;
+    ctx->state[2] += C;
+    ctx->state[3] += D;
+    ctx->state[4] += E;
+    ctx->state[5] += F;
+    ctx->state[6] += G;
+    ctx->state[7] += H;
+}
+
+static const HASH_VTAB SHA256_VTAB = {
+    SHA256_init,
+    SHA256_update,
+    SHA256_final,
+    SHA256_hash,
+    SHA256_DIGEST_SIZE
+};
+
+void SHA256_init(SHA256_CTX* ctx) {
+    ctx->f = &SHA256_VTAB;
+    ctx->state[0] = 0x6a09e667;
+    ctx->state[1] = 0xbb67ae85;
+    ctx->state[2] = 0x3c6ef372;
+    ctx->state[3] = 0xa54ff53a;
+    ctx->state[4] = 0x510e527f;
+    ctx->state[5] = 0x9b05688c;
+    ctx->state[6] = 0x1f83d9ab;
+    ctx->state[7] = 0x5be0cd19;
+    ctx->count = 0;
+}
+
+
+void SHA256_update(SHA256_CTX* ctx, const void* data, int len) {
+    int i = (int) (ctx->count & 63);
+    const uint8_t* p = (const uint8_t*)data;
+
+    ctx->count += len;
+
+    while (len--) {
+        ctx->buf[i++] = *p++;
+        if (i == 64) {
+            SHA256_Transform(ctx);
+            i = 0;
+        }
+    }
+}
+
+
+const uint8_t* SHA256_final(SHA256_CTX* ctx) {
+    uint8_t *p = ctx->buf;
+    uint64_t cnt = ctx->count * 8;
+    int i;
+
+    SHA256_update(ctx, (uint8_t*)"\x80", 1);
+    while ((ctx->count & 63) != 56) {
+        SHA256_update(ctx, (uint8_t*)"\0", 1);
+    }
+    for (i = 0; i < 8; ++i) {
+        uint8_t tmp = (uint8_t) (cnt >> ((7 - i) * 8));
+        SHA256_update(ctx, &tmp, 1);
+    }
+
+    for (i = 0; i < 8; i++) {
+        uint32_t tmp = ctx->state[i];
+        *p++ = tmp >> 24;
+        *p++ = tmp >> 16;
+        *p++ = tmp >> 8;
+        *p++ = tmp >> 0;
+    }
+
+    return ctx->buf;
+}
+
+/* Convenience function */
+const uint8_t* SHA256_hash(const void* data, int len, uint8_t* digest) {
+    SHA256_CTX ctx;
+    SHA256_init(&ctx);
+    SHA256_update(&ctx, data, len);
+    memcpy(digest, SHA256_final(&ctx), SHA256_DIGEST_SIZE);
+    return digest;
+}

native/jni/include/daemon.h

@@ -11,32 +11,32 @@
 extern int is_daemon_init, seperate_vendor;
 
 // Commands require connecting to daemon
-typedef enum {
+enum {
 	DO_NOTHING = 0,
-	LAUNCH_MAGISKHIDE,
-	STOP_MAGISKHIDE,
-	ADD_HIDELIST,
-	RM_HIDELIST,
-	LS_HIDELIST,
 	SUPERUSER,
 	CHECK_VERSION,
 	CHECK_VERSION_CODE,
 	POST_FS,
 	POST_FS_DATA,
 	LATE_START,
-	TEST
-} client_request;
+	LAUNCH_MAGISKHIDE,
+	STOP_MAGISKHIDE,
+	ADD_HIDELIST,
+	RM_HIDELIST,
+	LS_HIDELIST
+};
 
 // Return codes for daemon
-typedef enum {
+enum {
 	DAEMON_ERROR = -1,
 	DAEMON_SUCCESS = 0,
 	ROOT_REQUIRED,
+	LOGD_DISABLED,
 	HIDE_IS_ENABLED,
 	HIDE_NOT_ENABLED,
 	HIDE_ITEM_EXIST,
 	HIDE_ITEM_NOT_EXIST,
-} daemon_response;
+};
 
 // daemon.c
 

native/jni/include/logging.h

@@ -58,6 +58,7 @@ struct log_listener {
 };
 
 extern struct log_listener log_events[];
+extern int logd;
 
 void monitor_logs();
 void start_debug_full_log();

native/jni/include/magisk.h

@@ -7,7 +7,7 @@
 #include "logging.h"
 
 #define MAGISK_VER_STR  xstr(MAGISK_VERSION) ":MAGISK"
-#define REQUESTOR_DAEMON_PATH     "\0MAGISK"
+#define SOCKET_NAME     "d30138f2310a9fb9c54a3e0c21f58591"
 
 #ifndef ARG_MAX
 #define ARG_MAX 4096
@@ -55,6 +55,7 @@ extern char *argv0;     /* For changing process name */
 #define init_applet     ((char *[]) { "magiskpolicy", "supolicy", NULL })
 
 extern int (*applet_main[]) (int, char *[]), (*init_applet_main[]) (int, char *[]);
+extern char socket_name[];   /* Workaround compiler bug pre NDK r13 */
 
 int create_links(const char *bin, const char *path);
 

native/jni/include/utils.h

@@ -61,7 +61,7 @@ int xumount(const char *target);
 int xumount2(const char *target, int flags);
 int xrename(const char *oldpath, const char *newpath);
 int xmkdir(const char *pathname, mode_t mode);
-int xmkdir_p(const char *pathname, mode_t mode);
+int xmkdirs(const char *pathname, mode_t mode);
 int xmkdirat(int dirfd, const char *pathname, mode_t mode);
 void *xmmap(void *addr, size_t length, int prot, int flags,
 	int fd, off_t offset);
@@ -90,9 +90,13 @@ void get_client_cred(int fd, struct ucred *cred);
 int switch_mnt_ns(int pid);
 int fork_dont_care();
 void wait_till_exists(const char *target);
+void gen_rand_str(char *buf, int len);
 
 // file.c
 
+#define align(p, a)     (((p) + (a) - 1) / (a) * (a))
+#define align_off(p, a) (align(p, a) - (p))
+
 extern char **excl_list;
 
 struct file_attr {
@@ -101,13 +105,14 @@ struct file_attr {
 };
 
 int fd_getpath(int fd, char *path, size_t size);
-int mkdir_p(const char *pathname, mode_t mode);
+int mkdirs(const char *pathname, mode_t mode);
 void in_order_walk(int dirfd, void (*callback)(int, struct dirent*));
 void rm_rf(const char *path);
 void frm_rf(int dirfd);
 void mv_f(const char *source, const char *destination);
 void mv_dir(int src, int dest);
 void cp_afc(const char *source, const char *destination);
+void link_dir(int src, int dest);
 void clone_dir(int src, int dest);
 int getattr(const char *path, struct file_attr *a);
 int getattrat(int dirfd, const char *pathname, struct file_attr *a);
@@ -125,8 +130,6 @@ void full_read(const char *filename, void **buf, size_t *size);
 void full_read_at(int dirfd, const char *filename, void **buf, size_t *size);
 void stream_full_read(int fd, void **buf, size_t *size);
 void write_zero(int fd, size_t size);
-void mem_align(size_t *pos, size_t align);
-void file_align(int fd, size_t align, int out);
 
 // img.c
 

native/jni/include/vector.h

@@ -29,7 +29,7 @@ struct vector *vec_dup(struct vector *v);
 	for (int _ = 0; v && _ < (v)->size; ++_, e = (v)->data[_])
 
 #define vec_for_each_r(v, e) \
-	e = v ? (v)->data[(v)->size - 1] : NULL; \
+	e = (v && (v)->size > 0) ? (v)->data[(v)->size - 1] : NULL; \
 	for (int _ = ((int) (v)->size) - 1; v && _ >= 0; --_, e = (v)->data[_])
 
 #define vec_cur(v) vec_entry(v)[_]

native/jni/magiskboot/bootimg.c

@@ -0,0 +1,431 @@
+#include <stdlib.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/mman.h>
+
+#include "bootimg.h"
+#include "magiskboot.h"
+#include "utils.h"
+#include "logging.h"
+#include "mincrypt/sha.h"
+#include "mincrypt/sha256.h"
+
+#define INSUF_BLOCK_RET    2
+#define CHROMEOS_RET       3
+#define ELF32_RET          4
+#define ELF64_RET          5
+
+// Macros to determine header on-the-go
+#define lheader(b, e, o) \
+	((b)->flags & PXA_FLAG) ? \
+	(((struct pxa_boot_img_hdr*) (b)->hdr)->e o) : \
+	(((struct boot_img_hdr*) (b)->hdr)->e o)
+
+#define header(b, e) (lheader(b, e,))
+
+static void dump(void *buf, size_t size, const char *filename) {
+	if (size == 0)
+		return;
+	int fd = creat(filename, 0644);
+	xwrite(fd, buf, size);
+	close(fd);
+}
+
+static size_t restore(const char *filename, int fd) {
+	int ifd = xopen(filename, O_RDONLY);
+	size_t size = lseek(ifd, 0, SEEK_END);
+	lseek(ifd, 0, SEEK_SET);
+	xsendfile(fd, ifd, NULL, size);
+	close(ifd);
+	return size;
+}
+
+static void restore_buf(int fd, const void *buf, size_t size) {
+	xwrite(fd, buf, size);
+}
+
+static void print_hdr(const boot_img *boot) {
+	fprintf(stderr, "KERNEL [%u]\n", header(boot, kernel_size));
+	fprintf(stderr, "RAMDISK [%u]\n", header(boot, ramdisk_size));
+	fprintf(stderr, "SECOND [%u]\n", header(boot, second_size));
+	fprintf(stderr, "EXTRA [%u]\n", header(boot, extra_size));
+	fprintf(stderr, "PAGESIZE [%u]\n", header(boot, page_size));
+
+	if (!(boot->flags & PXA_FLAG)) {
+		uint32_t os_version = ((boot_img_hdr*) boot->hdr)->os_version;
+		if (os_version) {
+			int a,b,c,y,m = 0;
+			int version, patch_level;
+			version = os_version >> 11;
+			patch_level = os_version & 0x7ff;
+
+			a = (version >> 14) & 0x7f;
+			b = (version >> 7) & 0x7f;
+			c = version & 0x7f;
+			fprintf(stderr, "OS_VERSION [%d.%d.%d]\n", a, b, c);
+
+			y = (patch_level >> 4) + 2000;
+			m = patch_level & 0xf;
+			fprintf(stderr, "PATCH_LEVEL [%d-%02d]\n", y, m);
+		}
+	}
+
+	fprintf(stderr, "NAME [%s]\n", header(boot, name));
+	fprintf(stderr, "CMDLINE [%s]\n", header(boot, cmdline));
+	fprintf(stderr, "CHECKSUM [");
+	for (int i = 0; i < ((boot->flags & SHA256_FLAG) ? SHA256_DIGEST_SIZE : SHA_DIGEST_SIZE); ++i)
+		fprintf(stderr, "%02x", header(boot, id)[i]);
+	fprintf(stderr, "]\n");
+}
+
+static void clean_boot(boot_img *boot) {
+	munmap(boot->map_addr, boot->map_size);
+	free(boot->hdr);
+	free(boot->k_hdr);
+	free(boot->r_hdr);
+	free(boot->b_hdr);
+	memset(boot, 0, sizeof(*boot));
+}
+
+#define pos_align() pos = align(pos, header(boot, page_size))
+int parse_img(const char *image, boot_img *boot) {
+	memset(boot, 0, sizeof(*boot));
+	int is_blk = mmap_ro(image, &boot->map_addr, &boot->map_size);
+
+	// Parse image
+	fprintf(stderr, "Parsing boot image: [%s]\n", image);
+	for (void *head = boot->map_addr; head < boot->map_addr + boot->map_size; ++head) {
+		size_t pos = 0;
+
+		switch (check_fmt(head, boot->map_size)) {
+		case CHROMEOS:
+			// The caller should know it's chromeos, as it needs additional signing
+			boot->flags |= CHROMEOS_FLAG;
+			continue;
+		case DHTB:
+			boot->flags |= DHTB_FLAG;
+			boot->flags |= SEANDROID_FLAG;
+			fprintf(stderr, "DHTB_HDR\n");
+			continue;
+		case ELF32:
+			exit(ELF32_RET);
+		case ELF64:
+			exit(ELF64_RET);
+		case BLOB:
+			boot->flags |= BLOB_FLAG;
+			fprintf(stderr, "TEGRA_BLOB\n");
+			boot->b_hdr = malloc(sizeof(blob_hdr));
+			memcpy(boot->b_hdr, head, sizeof(blob_hdr));
+			continue;
+		case AOSP:
+			// Read the header
+			if (((boot_img_hdr*) head)->page_size >= 0x02000000) {
+				boot->flags |= PXA_FLAG;
+				fprintf(stderr, "PXA_BOOT_HDR\n");
+				boot->hdr = malloc(sizeof(pxa_boot_img_hdr));
+				memcpy(boot->hdr, head, sizeof(pxa_boot_img_hdr));
+			} else if (memcmp(((boot_img_hdr*) head)->cmdline, NOOKHD_MAGIC, 12) == 0
+					|| memcmp(((boot_img_hdr*) head)->cmdline, NOOKHD_NEW_MAGIC, 26) == 0) {
+				boot->flags |= NOOKHD_FLAG;
+				fprintf(stderr, "NOOKHD_GREEN_LOADER\n");
+				head += NOOKHD_PRE_HEADER_SZ - 1;
+				continue;
+			} else if (memcmp(((boot_img_hdr*) head)->name, ACCLAIM_MAGIC, 10) == 0) {
+				boot->flags |= ACCLAIM_FLAG;
+				fprintf(stderr, "ACCLAIM_BAUWKSBOOT\n");
+				head += ACCLAIM_PRE_HEADER_SZ - 1;
+				continue;
+			} else {
+				boot->hdr = malloc(sizeof(boot_img_hdr));
+				memcpy(boot->hdr, head, sizeof(boot_img_hdr));
+			}
+			pos += header(boot, page_size);
+
+			for (int i = SHA_DIGEST_SIZE; i < SHA256_DIGEST_SIZE; ++i) {
+				if (header(boot, id)[i]) {
+					boot->flags |= SHA256_FLAG;
+					break;
+				}
+			}
+
+			print_hdr(boot);
+
+			boot->kernel = head + pos;
+			pos += header(boot, kernel_size);
+			pos_align();
+
+			boot->ramdisk = head + pos;
+			pos += header(boot, ramdisk_size);
+			pos_align();
+
+			boot->second = head + pos;
+			pos += header(boot, second_size);
+			pos_align();
+
+			boot->extra = head + pos;
+			pos += header(boot, extra_size);
+			pos_align();
+
+			if (pos < boot->map_size) {
+				boot->tail = head + pos;
+				boot->tail_size = boot->map_size - pos;
+			}
+
+			// Check tail info, currently only for LG Bump and Samsung SEANDROIDENFORCE
+			if (boot->tail_size >= 16 && memcmp(boot->tail, SEANDROID_MAGIC, 16) == 0) {
+				boot->flags |= SEANDROID_FLAG;
+			} else if (boot->tail_size >= 16 && memcmp(boot->tail, LG_BUMP_MAGIC, 16) == 0) {
+				boot->flags |= LG_BUMP_FLAG;
+			}
+
+			// Search for dtb in kernel
+			for (uint32_t i = 0; i < header(boot, kernel_size); ++i) {
+				if (memcmp(boot->kernel + i, DTB_MAGIC, 4) == 0) {
+					boot->dtb = boot->kernel + i;
+					boot->dt_size = header(boot, kernel_size) - i;
+					lheader(boot, kernel_size, = i);
+					fprintf(stderr, "DTB [%u]\n", boot->dt_size);
+					break;
+				}
+			}
+
+			boot->k_fmt = check_fmt(boot->kernel, header(boot, kernel_size));
+			boot->r_fmt = check_fmt(boot->ramdisk, header(boot, ramdisk_size));
+
+			// Check MTK
+			if (boot->k_fmt == MTK) {
+				fprintf(stderr, "MTK_KERNEL_HDR\n");
+				boot->flags |= MTK_KERNEL;
+				boot->k_hdr = malloc(sizeof(mtk_hdr));
+				memcpy(boot->k_hdr, boot->kernel, sizeof(mtk_hdr));
+				fprintf(stderr, "KERNEL [%u]\n", boot->k_hdr->size);
+				fprintf(stderr, "NAME [%s]\n", boot->k_hdr->name);
+				boot->kernel += 512;
+				lheader(boot, kernel_size, -= 512);
+				boot->k_fmt = check_fmt(boot->kernel, header(boot, kernel_size));
+			}
+			if (boot->r_fmt == MTK) {
+				fprintf(stderr, "MTK_RAMDISK_HDR\n");
+				boot->flags |= MTK_RAMDISK;
+				boot->r_hdr = malloc(sizeof(mtk_hdr));
+				memcpy(boot->r_hdr, boot->ramdisk, sizeof(mtk_hdr));
+				fprintf(stderr, "RAMDISK [%u]\n", boot->r_hdr->size);
+				fprintf(stderr, "NAME [%s]\n", boot->r_hdr->name);
+				boot->ramdisk += 512;
+				lheader(boot, ramdisk_size, -= 512);
+				boot->r_fmt = check_fmt(boot->ramdisk, header(boot, ramdisk_size));
+			}
+
+			char fmt[16];
+			get_fmt_name(boot->k_fmt, fmt);
+			fprintf(stderr, "KERNEL_FMT [%s]\n", fmt);
+			get_fmt_name(boot->r_fmt, fmt);
+			fprintf(stderr, "RAMDISK_FMT [%s]\n", fmt);
+
+			return boot->flags & CHROMEOS_FLAG ? CHROMEOS_RET :
+				   ((is_blk && boot->tail_size < 500 * 1024) ? INSUF_BLOCK_RET : 0);
+		default:
+			continue;
+		}
+	}
+	LOGE("No boot image magic found!\n");
+}
+
+int unpack(const char *image) {
+	boot_img boot;
+	int ret = parse_img(image, &boot);
+	int fd;
+
+	// Dump kernel
+	if (COMPRESSED(boot.k_fmt)) {
+		fd = creat(KERNEL_FILE, 0644);
+		decomp(boot.k_fmt, fd, boot.kernel, header(&boot, kernel_size));
+		close(fd);
+	} else {
+		dump(boot.kernel, header(&boot, kernel_size), KERNEL_FILE);
+	}
+
+	// Dump dtb
+	dump(boot.dtb, boot.dt_size, DTB_FILE);
+
+	// Dump ramdisk
+	if (COMPRESSED(boot.r_fmt)) {
+		fd = creat(RAMDISK_FILE, 0644);
+		decomp(boot.r_fmt, fd, boot.ramdisk, header(&boot, ramdisk_size));
+		close(fd);
+	} else {
+		dump(boot.ramdisk, header(&boot, ramdisk_size), RAMDISK_FILE);
+	}
+
+	// Dump second
+	dump(boot.second, header(&boot, second_size), SECOND_FILE);
+
+	// Dump extra
+	dump(boot.extra, header(&boot, extra_size), EXTRA_FILE);
+
+	clean_boot(&boot);
+	return ret;
+}
+
+#define file_align() write_zero(fd, align_off(lseek(fd, 0, SEEK_CUR) - header_off, header(&boot, page_size)))
+void repack(const char* orig_image, const char* out_image) {
+	boot_img boot;
+
+	off_t header_off, kernel_off, ramdisk_off, second_off, extra_off;
+
+	// Parse original image
+	parse_img(orig_image, &boot);
+
+	// Reset all sizes
+	lheader(&boot, kernel_size, = 0);
+	lheader(&boot, ramdisk_size, = 0);
+	lheader(&boot, second_size, = 0);
+	lheader(&boot, extra_size, = 0);
+	boot.dt_size = 0;
+
+	fprintf(stderr, "Repack to boot image: [%s]\n", out_image);
+
+	// Create new image
+	int fd = creat(out_image, 0644);
+
+	if (boot.flags & DHTB_FLAG) {
+		// Skip DHTB header
+		write_zero(fd, 512);
+	} else if (boot.flags & BLOB_FLAG) {
+		// Skip blob header
+		write_zero(fd, sizeof(blob_hdr));
+	} else if (boot.flags & NOOKHD_FLAG) {
+		restore_buf(fd, boot.map_addr, NOOKHD_PRE_HEADER_SZ);
+	} else if (boot.flags & ACCLAIM_FLAG) {
+		restore_buf(fd, boot.map_addr, ACCLAIM_PRE_HEADER_SZ);
+	}
+
+	// Skip a page for header
+	header_off = lseek(fd, 0, SEEK_CUR);
+	write_zero(fd, header(&boot, page_size));
+
+	// kernel
+	kernel_off = lseek(fd, 0, SEEK_CUR);
+	if (boot.flags & MTK_KERNEL) {
+		// Skip MTK header
+		write_zero(fd, 512);
+	}
+	if (access(KERNEL_FILE, R_OK) == 0) {
+		if (COMPRESSED(boot.k_fmt)) {
+			size_t raw_size;
+			void *kernel_raw;
+			mmap_ro(KERNEL_FILE, &kernel_raw, &raw_size);
+			lheader(&boot, kernel_size, = comp(boot.k_fmt, fd, kernel_raw, raw_size));
+			munmap(kernel_raw, raw_size);
+		} else {
+			lheader(&boot, kernel_size, = restore(KERNEL_FILE, fd));
+		}
+	}
+
+	// dtb
+	if (access(DTB_FILE, R_OK) == 0) {
+		lheader(&boot, kernel_size, += restore(DTB_FILE, fd));
+	}
+	file_align();
+
+	// ramdisk
+	ramdisk_off = lseek(fd, 0, SEEK_CUR);
+	if (boot.flags & MTK_RAMDISK) {
+		// Skip MTK header
+		write_zero(fd, 512);
+	}
+	if (access(RAMDISK_FILE, R_OK) == 0) {
+		if (COMPRESSED(boot.r_fmt)) {
+			size_t cpio_size;
+			void *cpio;
+			mmap_ro(RAMDISK_FILE, &cpio, &cpio_size);
+			lheader(&boot, ramdisk_size, = comp(boot.r_fmt, fd, cpio, cpio_size));
+			munmap(cpio, cpio_size);
+		} else {
+			lheader(&boot, ramdisk_size, = restore(RAMDISK_FILE, fd));
+		}
+		file_align();
+	}
+
+	// second
+	second_off = lseek(fd, 0, SEEK_CUR);
+	if (access(SECOND_FILE, R_OK) == 0) {
+		lheader(&boot, second_size, = restore(SECOND_FILE, fd));
+		file_align();
+	}
+
+	// extra
+	extra_off = lseek(fd, 0, SEEK_CUR);
+	if (access(EXTRA_FILE, R_OK) == 0) {
+		lheader(&boot, extra_size, = restore(EXTRA_FILE, fd));
+		file_align();
+	}
+
+	// Append tail info
+	if (boot.flags & SEANDROID_FLAG) {
+		restore_buf(fd, SEANDROID_MAGIC "\xFF\xFF\xFF\xFF", 20);
+	}
+	if (boot.flags & LG_BUMP_FLAG) {
+		restore_buf(fd, LG_BUMP_MAGIC, 16);
+	}
+
+	close(fd);
+
+	// Map output image as rw
+	munmap(boot.map_addr, boot.map_size);
+	mmap_rw(out_image, &boot.map_addr, &boot.map_size);
+
+	// MTK headers
+	if (boot.flags & MTK_KERNEL) {
+		boot.k_hdr->size = header(&boot, kernel_size);
+		lheader(&boot, kernel_size, += 512);
+		memcpy(boot.map_addr + kernel_off, boot.k_hdr, sizeof(mtk_hdr));
+	}
+	if (boot.flags & MTK_RAMDISK) {
+		boot.r_hdr->size = header(&boot, ramdisk_size);
+		lheader(&boot, ramdisk_size, += 512);
+		memcpy(boot.map_addr + ramdisk_off, boot.r_hdr, sizeof(mtk_hdr));
+	}
+
+	// Update checksum
+	HASH_CTX ctx;
+	(boot.flags & SHA256_FLAG) ? SHA256_init(&ctx) : SHA_init(&ctx);
+	uint32_t size = header(&boot, kernel_size);
+	HASH_update(&ctx, boot.map_addr + kernel_off, size);
+	HASH_update(&ctx, &size, sizeof(size));
+	size = header(&boot, ramdisk_size);
+	HASH_update(&ctx, boot.map_addr + ramdisk_off, size);
+	HASH_update(&ctx, &size, sizeof(size));
+	size = header(&boot, second_size);
+	HASH_update(&ctx, boot.map_addr + second_off, size);
+	HASH_update(&ctx, &size, sizeof(size));
+	size = header(&boot, extra_size);
+	if (size) {
+		HASH_update(&ctx, boot.map_addr + extra_off, size);
+		HASH_update(&ctx, &size, sizeof(size));
+	}
+	memset(header(&boot, id), 0, 32);
+	memcpy(header(&boot, id), HASH_final(&ctx),
+		   (boot.flags & SHA256_FLAG) ? SHA256_DIGEST_SIZE : SHA_DIGEST_SIZE);
+
+	// Print new image info
+	print_hdr(&boot);
+
+	// Main header
+	memcpy(boot.map_addr + header_off, boot.hdr,
+		   (boot.flags & PXA_FLAG) ? sizeof(pxa_boot_img_hdr) : sizeof(boot_img_hdr));
+
+	if (boot.flags & DHTB_FLAG) {
+		// DHTB header
+		dhtb_hdr *hdr = boot.map_addr;
+		memcpy(hdr, DHTB_MAGIC, 8);
+		hdr->size = boot.map_size - 512;
+		SHA256_hash(boot.map_addr + 512, hdr->size, hdr->checksum);
+	} else if (boot.flags & BLOB_FLAG) {
+		// Blob headers
+		boot.b_hdr->size = boot.map_size - sizeof(blob_hdr);
+		memcpy(boot.map_addr, boot.b_hdr, sizeof(blob_hdr));
+	}
+
+	clean_boot(&boot);
+}

native/jni/magiskboot/bootimg.h

@@ -0,0 +1,169 @@
+#include <stdint.h>
+#include "format.h"
+
+#ifndef _BOOT_IMAGE_H_
+#define _BOOT_IMAGE_H_
+
+typedef struct boot_img_hdr {
+	char magic[8];
+
+	uint32_t kernel_size;  /* size in bytes */
+	uint32_t kernel_addr;  /* physical load addr */
+
+	uint32_t ramdisk_size; /* size in bytes */
+	uint32_t ramdisk_addr; /* physical load addr */
+
+	uint32_t second_size;  /* size in bytes */
+	uint32_t second_addr;  /* physical load addr */
+
+	uint32_t tags_addr;    /* physical addr for kernel tags */
+	uint32_t page_size;    /* flash page size we assume */
+	uint32_t extra_size;   /* extra blob size in bytes */
+
+	/* operating system version and security patch level; for
+	 * version "A.B.C" and patch level "Y-M-D":
+	 * ver = A << 14 | B << 7 | C         (7 bits for each of A, B, C)
+	 * lvl = ((Y - 2000) & 127) << 4 | M  (7 bits for Y, 4 bits for M)
+	 * os_version = ver << 11 | lvl */
+	uint32_t os_version;
+
+	char name[16];         /* asciiz product name */
+	char cmdline[512];
+	char id[32];           /* timestamp / checksum / sha1 / etc */
+
+	/* Supplemental command line data; kept here to maintain
+	 * binary compatibility with older versions of mkbootimg */
+	char extra_cmdline[1024];
+} __attribute__((packed)) boot_img_hdr ;
+
+typedef struct pxa_boot_img_hdr {
+	char magic[8];
+
+	uint32_t kernel_size;  /* size in bytes */
+	uint32_t kernel_addr;  /* physical load addr */
+
+	uint32_t ramdisk_size; /* size in bytes */
+	uint32_t ramdisk_addr; /* physical load addr */
+
+	uint32_t second_size;  /* size in bytes */
+	uint32_t second_addr;  /* physical load addr */
+
+	uint32_t extra_size;   /* extra blob size in bytes */
+	uint32_t unknown;      /* unknown value */
+	uint32_t tags_addr;    /* physical addr for kernel tags */
+	uint32_t page_size;    /* flash page size we assume */
+
+	char name[24];         /* asciiz product name */
+	char cmdline[512];
+	char id[32];           /* timestamp / checksum / sha1 / etc */
+
+	/* Supplemental command line data; kept here to maintain
+	 * binary compatibility with older versions of mkbootimg */
+	char extra_cmdline[1024];
+} __attribute__((packed)) pxa_boot_img_hdr;
+
+/*
+** +-----------------+
+** | boot header     | 1 page
+** +-----------------+
+** | kernel          | n pages
+** +-----------------+
+** | ramdisk         | m pages
+** +-----------------+
+** | second stage    | o pages
+** +-----------------+
+** | extra blob      | p pages
+** +-----------------+
+**
+** n = (kernel_size + page_size - 1) / page_size
+** m = (ramdisk_size + page_size - 1) / page_size
+** o = (second_size + page_size - 1) / page_size
+** p = (extra_size + page_size - 1) / page_size
+**
+** 0. all entities are page_size aligned in flash
+** 1. kernel and ramdisk are required (size != 0)
+** 2. second is optional (second_size == 0 -> no second)
+** 3. load each element (kernel, ramdisk, second) at
+**    the specified physical address (kernel_addr, etc)
+** 4. prepare tags at tag_addr.  kernel_args[] is
+**    appended to the kernel commandline in the tags.
+** 5. r0 = 0, r1 = MACHINE_TYPE, r2 = tags_addr
+** 6. if second_size != 0: jump to second_addr
+**    else: jump to kernel_addr
+*/
+
+typedef struct mtk_hdr {
+	uint32_t magic;      /* MTK magic */
+	uint32_t size;       /* Size of the content */
+	char name[32];       /* The type of the header */
+} __attribute__((packed)) mtk_hdr;
+
+typedef struct dhtb_hdr {
+	char magic[8];      /* DHTB magic */
+	char checksum[40];  /* Payload SHA256, whole image + SEANDROIDENFORCE + 0xFFFFFFFF */
+	uint32_t size;      /* Payload size, whole image + SEANDROIDENFORCE + 0xFFFFFFFF */
+} __attribute__((packed)) dhtb_hdr;
+
+typedef struct blob_hdr {
+	char secure_magic[20];  /* "-SIGNED-BY-SIGNBLOB-" */
+	uint32_t datalen;       /* 0x00000000 */
+	uint32_t signature;     /* 0x00000000 */
+	char magic[16];         /* "MSM-RADIO-UPDATE" */
+	uint32_t hdr_version;   /* 0x00010000 */
+	uint32_t hdr_size;      /* Size of header */
+	uint32_t part_offset;   /* Same as size */
+	uint32_t num_parts;     /* Number of partitions */
+	uint32_t unknown[7];    /* All 0x00000000 */
+	char name[4];           /* Name of partition */
+	uint32_t offset;        /* offset in blob where this partition starts */
+	uint32_t size;          /* Size of data */
+	uint32_t version;       /* 0x00000001 */
+} __attribute__((packed)) blob_hdr;
+
+// Flags
+#define MTK_KERNEL      0x0001
+#define MTK_RAMDISK     0x0002
+#define CHROMEOS_FLAG   0x0004
+#define PXA_FLAG        0x0008
+#define DHTB_FLAG       0x0010
+#define SEANDROID_FLAG  0x0020
+#define LG_BUMP_FLAG    0x0040
+#define SHA256_FLAG     0x0080
+#define BLOB_FLAG       0x0100
+#define NOOKHD_FLAG     0x0200
+#define ACCLAIM_FLAG    0x0400
+
+typedef struct boot_img {
+	// Memory map of the whole image
+	void *map_addr;
+	size_t map_size;
+
+	// Headers
+	void *hdr;          /* Either boot_img_hdr or pxa_boot_img_hdr */
+	mtk_hdr *k_hdr;     /* MTK kernel header */
+	mtk_hdr *r_hdr;     /* MTK ramdisk header */
+	blob_hdr *b_hdr;    /* Tegra blob header */
+
+	// Flags to indicate the state of current boot image
+	uint16_t flags;
+
+	// The format of kernel and ramdisk
+	format_t k_fmt;
+	format_t r_fmt;
+
+	// Pointer to dtb that is appended after kernel
+	void *dtb;
+	uint32_t dt_size;
+
+	// Pointer to end of image
+	void *tail;
+	size_t tail_size;
+
+	// Pointers to blocks defined in header
+	void *kernel;
+	void *ramdisk;
+	void *second;
+	void *extra;
+} boot_img;
+
+#endif

native/jni/magiskboot/compress.c

@@ -343,7 +343,7 @@ done:
 	return total;
 }
 
-long long decomp(file_t type, int to, const void *from, size_t size) {
+long long decomp(format_t type, int to, const void *from, size_t size) {
 	switch (type) {
 		case GZIP:
 			return gzip(0, to, from, size);
@@ -363,7 +363,7 @@ long long decomp(file_t type, int to, const void *from, size_t size) {
 	}
 }
 
-long long comp(file_t type, int to, const void *from, size_t size) {
+long long comp(format_t type, int to, const void *from, size_t size) {
 	switch (type) {
 		case GZIP:
 			return gzip(1, to, from, size);
@@ -395,7 +395,7 @@ void decomp_file(char *from, const char *to) {
 		stream_full_read(STDIN_FILENO, &file, &size);
 	else
 		mmap_ro(from, &file, &size);
-	file_t type = check_type(file);
+	format_t type = check_fmt(file, size);
 	char *ext;
 	ext = strrchr(from, '.');
 	if (to == NULL)
@@ -453,7 +453,7 @@ void decomp_file(char *from, const char *to) {
 }
 
 void comp_file(const char *method, const char *from, const char *to) {
-	file_t type;
+	format_t type;
 	char *ext, dest[PATH_MAX];
 	if (strcmp(method, "gzip") == 0) {
 		type = GZIP;

native/jni/magiskboot/dtb.c

@@ -49,7 +49,7 @@ static void dtb_dump(const char *file) {
 	for (int i = 0; i < size; ++i) {
 		if (memcmp(dtb + i, DTB_MAGIC, 4) == 0) {
 			fdt = dtb + i;
-			fprintf(stderr, "Dumping dtb.%04d\n\n", dtb_num++);
+			fprintf(stderr, "Dumping dtb.%04d\n", dtb_num++);
 			print_subnode(fdt, 0, 0);
 		}
 	}
@@ -61,7 +61,7 @@ static void dtb_dump(const char *file) {
 static void dtb_patch(const char *file, int patch) {
 	size_t size ;
 	void *dtb, *fdt;
-	fprintf(stderr, "Loading dtbs from [%s]\n\n", file);
+	fprintf(stderr, "Loading dtbs from [%s]\n", file);
 	if (patch)
 		mmap_rw(file, &dtb, &size);
 	else
@@ -78,13 +78,21 @@ static void dtb_patch(const char *file, int patch) {
 				fdt_for_each_subnode(block, fdt, fstab) {
 					fprintf(stderr, "Found block [%s] in fstab\n", fdt_get_name(fdt, block, NULL));
 					uint32_t value_size;
-					void *value = (char *) fdt_getprop(fdt, block, "fsmgr_flags", &value_size);
-					found |= patch_verity(&value, &value_size, patch);
+					void *value = (void *) fdt_getprop(fdt, block, "fsmgr_flags", &value_size);
+					if (patch) {
+						void *dup = xmalloc(value_size);
+						memcpy(dup, value, value_size);
+						memset(value, 0, value_size);
+						found |= patch_verity(&dup, &value_size, 1);
+						memcpy(value, dup, value_size);
+						free(dup);
+					} else {
+						found |= patch_verity(&value, &value_size, 0);
+					}
 				}
 			}
 		}
 	}
-	fprintf(stderr, "\n");
 	munmap(dtb, size);
 	exit(!found);
 }

native/jni/magiskboot/format.c

@@ -1,44 +1,50 @@
 #include <string.h>
 
 #include "bootimg.h"
-#include "types.h"
+#include "format.h"
 
-file_t check_type(const void *buf) {
-	if (memcmp(buf, CHROMEOS_MAGIC, 8) == 0) {
+#define MATCH(s) (len >= (sizeof(s) - 1) && memcmp(buf, s, sizeof(s) - 1) == 0)
+
+format_t check_fmt(const void *buf, size_t len) {
+	if (MATCH(CHROMEOS_MAGIC)) {
 		return CHROMEOS;
-	} else if (memcmp(buf, BOOT_MAGIC, BOOT_MAGIC_SIZE) == 0) {
+	} else if (MATCH(BOOT_MAGIC)) {
 		return AOSP;
-	} else if (memcmp(buf, ELF32_MAGIC, 5) == 0) {
+	} else if (MATCH(ELF32_MAGIC)) {
 		return ELF32;
-	} else if (memcmp(buf, ELF64_MAGIC, 5) == 0) {
+	} else if (MATCH(ELF64_MAGIC)) {
 		return ELF64;
-	} else if (memcmp(buf, GZIP_MAGIC, 4) == 0) {
+	} else if (MATCH(GZIP_MAGIC)) {
 		return GZIP;
-	} else if (memcmp(buf, LZOP_MAGIC, 9) == 0) {
+	} else if (MATCH(LZOP_MAGIC)) {
 		return LZOP;
-	} else if (memcmp(buf, XZ_MAGIC, 6) == 0) {
+	} else if (MATCH(XZ_MAGIC)) {
 		return XZ;
-	} else if (memcmp(buf, "\x5d\x00\x00", 3) == 0
+	} else if (len >= 13 && memcmp(buf, "\x5d\x00\x00", 3) == 0
 			&& (((char *)buf)[12] == '\xff' || ((char *)buf)[12] == '\x00')) {
 		return LZMA;
-	} else if (memcmp(buf, BZIP_MAGIC, 3) == 0) {
+	} else if (MATCH(BZIP_MAGIC)) {
 		return BZIP2;
-	} else if (memcmp(buf, LZ4_MAGIC, 4) == 0) {
+	} else if (MATCH(LZ4_MAGIC)) {
 		return LZ4;
-	} else if (memcmp(buf, LZ4_LEG_MAGIC, 4) == 0) {
+	} else if (MATCH(LZ4_LEG_MAGIC)) {
 		return LZ4_LEGACY;
-	} else if (memcmp(buf, MTK_MAGIC, 4) == 0) {
+	} else if (MATCH(MTK_MAGIC)) {
 		return MTK;
-	} else if (memcmp(buf, DTB_MAGIC, 4) == 0) {
+	} else if (MATCH(DTB_MAGIC)) {
 		return DTB;
+	} else if (MATCH(DHTB_MAGIC)) {
+		return DHTB;
+	} else if (MATCH(TEGRABLOB_MAGIC)) {
+		return BLOB;
 	} else {
 		return UNKNOWN;
 	}
 }
 
-void get_type_name(file_t type, char *name) {
+void get_fmt_name(format_t fmt, char *name) {
 	char *s;
-	switch (type) {
+	switch (fmt) {
 		case CHROMEOS:
 			s = "chromeos";
 			break;

native/jni/magiskboot/format.h

@@ -1,25 +1,28 @@
-#ifndef _TYPES_H_
-#define _TYPES_H_
+#ifndef _FORMAT_H_
+#define _FORMAT_H_
 
 typedef enum {
-    UNKNOWN,
-    CHROMEOS,
-    AOSP,
-    ELF32,
-    ELF64,
-    GZIP,
-    LZOP,
-    XZ,
-    LZMA,
-    BZIP2,
-    LZ4,
-    LZ4_LEGACY,
-    MTK,
-    DTB
-} file_t;
+	UNKNOWN,
+	CHROMEOS,
+	AOSP,
+	ELF32,
+	ELF64,
+	GZIP,
+	LZOP,
+	XZ,
+	LZMA,
+	BZIP2,
+	LZ4,
+	LZ4_LEGACY,
+	MTK,
+	DTB,
+	DHTB,
+	BLOB
+} format_t;
 
-#define COMPRESSED(type)  (type >= GZIP && type <= LZ4_LEGACY)
+#define COMPRESSED(fmt)  (fmt >= GZIP && fmt <= LZ4_LEGACY)
 
+#define BOOT_MAGIC      "ANDROID!"
 #define CHROMEOS_MAGIC  "CHROMEOS"
 #define ELF32_MAGIC     "\x7f""ELF\x01"
 #define ELF64_MAGIC     "\x7f""ELF\x02"
@@ -32,11 +35,19 @@ typedef enum {
 #define MTK_MAGIC       "\x88\x16\x88\x58"
 #define DTB_MAGIC       "\xd0\x0d\xfe\xed"
 #define LG_BUMP_MAGIC   "\x41\xa9\xe4\x67\x74\x4d\x1d\x1b\xa4\x29\xf2\xec\xea\x65\x52\x79"
+#define DHTB_MAGIC      "\x44\x48\x54\x42\x01\x00\x00\x00"
+#define SEANDROID_MAGIC "SEANDROIDENFORCE"
+#define TEGRABLOB_MAGIC "-SIGNED-BY-SIGNBLOB-"
+#define NOOKHD_MAGIC    "Green Loader"
+#define NOOKHD_NEW_MAGIC "eMMC boot.img+secondloader"
+#define NOOKHD_PRE_HEADER_SZ 1048576
+#define ACCLAIM_MAGIC   "BauwksBoot"
+#define ACCLAIM_PRE_HEADER_SZ 262144
 
 #define SUP_LIST      ((char *[]) { "gzip", "xz", "lzma", "bzip2", "lz4", "lz4_legacy", NULL })
 #define SUP_EXT_LIST  ((char *[]) { "gz", "xz", "lzma", "bz2", "lz4", "lz4", NULL })
 
-file_t check_type(const void *buf);
-void get_type_name(file_t type, char *name);
+format_t check_fmt(const void *buf, size_t len);
+void get_fmt_name(format_t fmt, char *name);
 
 #endif

native/jni/magiskboot/magiskboot.h

@@ -14,7 +14,7 @@
 #define NEW_BOOT        "new-boot.img"
 
 // Main entries
-void unpack(const char *image);
+int unpack(const char *image);
 void repack(const char* orig_image, const char* out_image);
 void hexpatch(const char *image, const char *from, const char *to);
 int parse_img(const char *image, boot_img *boot);
@@ -29,7 +29,7 @@ size_t lzma(int mode, int fd, const void *buf, size_t size);
 size_t lz4(int mode, int fd, const void *buf, size_t size);
 size_t bzip2(int mode, int fd, const void *buf, size_t size);
 size_t lz4_legacy(int mode, int fd, const void *buf, size_t size);
-long long comp(file_t type, int to, const void *from, size_t size);
-long long decomp(file_t type, int to, const void *from, size_t size);
+long long comp(format_t type, int to, const void *from, size_t size);
+long long decomp(format_t type, int to, const void *from, size_t size);
 
 #endif

native/jni/magiskboot/main.c

@@ -6,7 +6,7 @@
 
 #include "magiskboot.h"
 #include "utils.h"
-#include "sha1.h"
+#include "mincrypt/sha.h"
 
 /********************
   Patch Boot Image
@@ -73,12 +73,12 @@ static void usage(char *arg0) {
 		" --dtb-<cmd> <dtb>\n"
 		"  Do dtb related cmds to <dtb> (modifications are done directly)\n"
 		"  Supported commands:\n"
-		"    -dump\n"
+		"    dump\n"
 		"      Dump all contents from dtb for debugging\n"
-		"    -test\n"
+		"    test\n"
 		"      Check if fstab has verity/avb flags\n"
-		"      Return value: 0/no flags 1/flag exists"
-		"    -patch\n"
+		"      Return value: 0/no flags 1/flag exists\n"
+		"    patch\n"
 		"      Search for fstab and remove verity/avb\n"
 		"\n"
 		" --compress[=method] <infile> [outfile]\n"
@@ -126,19 +126,20 @@ int main(int argc, char *argv[]) {
 			unlink(name);
 		}
 	} else if (argc > 2 && strcmp(argv[1], "--sha1") == 0) {
-		char sha1[21], *buf;
+		uint8_t sha1[SHA_DIGEST_SIZE];
+		void *buf;
 		size_t size;
-		mmap_ro(argv[2], (void **) &buf, &size);
-		SHA1(sha1, buf, size);
-		for (int i = 0; i < 20; ++i)
+		mmap_ro(argv[2], &buf, &size);
+		SHA_hash(buf, size, sha1);
+		for (int i = 0; i < SHA_DIGEST_SIZE; ++i)
 			printf("%02x", sha1[i]);
 		printf("\n");
 		munmap(buf, size);
 	} else if (argc > 2 && strcmp(argv[1], "--parse") == 0) {
 		boot_img boot;
-		exit(parse_img(argv[2], &boot));
+		return parse_img(argv[2], &boot);
 	} else if (argc > 2 && strcmp(argv[1], "--unpack") == 0) {
-		unpack(argv[2]);
+		return unpack(argv[2]);
 	} else if (argc > 2 && strcmp(argv[1], "--repack") == 0) {
 		repack(argv[2], argc > 3 ? argv[3] : NEW_BOOT);
 	} else if (argc > 2 && strcmp(argv[1], "--decompress") == 0) {
@@ -157,7 +158,8 @@ int main(int argc, char *argv[]) {
 		char *cmd = argv[1] + 5;
 		if (*cmd == '\0') usage(argv[0]);
 		else ++cmd;
-		if (dtb_commands(cmd, argc - 2, argv + 2)) usage(argv[0]);
+		if (dtb_commands(cmd, argc - 2, argv + 2))
+			usage(argv[0]);
 	} else {
 		usage(argv[0]);
 	}

native/jni/magiskboot/ramdisk.c

@@ -9,6 +9,8 @@
 #include "cpio.h"
 
 static void cpio_patch(struct vector *v, int keepverity, int keepforceencrypt) {
+	fprintf(stderr, "Patch with flag KEEPVERITY=[%s] KEEPFORCEENCRYPT=[%s]\n",
+			keepverity ? "true" : "false", keepforceencrypt ? "true" : "false");
 	cpio_entry *e;
 	vec_for_each(v, e) {
 		if (!e) continue;
@@ -19,6 +21,7 @@ static void cpio_patch(struct vector *v, int keepverity, int keepforceencrypt) {
 				fprintf(stderr, "Remove [verity_key]\n");
 				cpio_free(e);
 				vec_cur(v) = NULL;
+				continue;
 			}
 		}
 		if (!keepforceencrypt) {
@@ -31,18 +34,22 @@ static void cpio_patch(struct vector *v, int keepverity, int keepforceencrypt) {
 
 #define STOCK_BOOT      0x0
 #define MAGISK_PATCH    0x1
-#define OTHER_PATCH     0x2
+#define HIGH_COMPRESS   0x2
+#define OTHER_PATCH     0x3
 
 static int cpio_test(struct vector *v) {
 	const char *OTHER_LIST[] = { "sbin/launch_daemonsu.sh", "sbin/su", "init.xposed.rc", "boot/sbin/launch_daemonsu.sh", NULL };
 	const char *MAGISK_LIST[] = { ".backup/.magisk", "init.magisk.rc", "overlay/init.magisk.rc", NULL };
 
 	for (int i = 0; OTHER_LIST[i]; ++i)
-		if (cpio_find(v, OTHER_LIST[i]) > 0)
+		if (cpio_find(v, OTHER_LIST[i]) >= 0)
 			return OTHER_PATCH;
 
+	if (cpio_find(v, "ramdisk.cpio.xz") >= 0)
+		return HIGH_COMPRESS;
+
 	for (int i = 0; MAGISK_LIST[i]; ++i)
-		if (cpio_find(v, MAGISK_LIST[i]) > 0)
+		if (cpio_find(v, MAGISK_LIST[i]) >= 0)
 			return MAGISK_PATCH;
 
 	return STOCK_BOOT;
@@ -134,7 +141,7 @@ static void cpio_backup(struct vector *v, struct vector *bak, const char *orig,
 			backup = 1;
 			fprintf(stderr, "Backup mismatch entry: ");
 		} else {
-			// Someting new in ramdisk, record in rem
+			// Something new in ramdisk, record in rem
 			++j;
 			rem->data = xrealloc(rem->data, rem->filesize + strlen(n->filename) + 1);
 			memcpy(rem->data + rem->filesize, n->filename, strlen(n->filename) + 1);

native/jni/magiskhide/hide_utils.c

@@ -113,7 +113,7 @@ int rm_list(char *proc) {
 		return HIDE_NOT_ENABLED;
 	}
 
-	daemon_response ret = DAEMON_ERROR;
+	int ret = DAEMON_ERROR;
 	char *line;
 	int do_rm = 0;
 	struct vector *new_list = xmalloc(sizeof(*new_list));

native/jni/magiskhide/magiskhide.c

@@ -49,6 +49,14 @@ void launch_magiskhide(int client) {
 		return;
 	}
 
+	if (!logd) {
+		if (client > 0) {
+			write_int(client, LOGD_DISABLED);
+			close(client);
+		}
+		return;
+	}
+
 	hideEnabled = 1;
 	LOGI("* Starting MagiskHide\n");
 
@@ -110,7 +118,7 @@ int magiskhide_main(int argc, char *argv[]) {
 	if (argc < 2) {
 		usage(argv[0]);
 	}
-	client_request req = DO_NOTHING;
+	int req = DO_NOTHING;
 	if (strcmp(argv[1], "--enable") == 0) {
 		req = LAUNCH_MAGISKHIDE;
 	} else if (strcmp(argv[1], "--disable") == 0) {
@@ -129,16 +137,16 @@ int magiskhide_main(int argc, char *argv[]) {
 	if (req == ADD_HIDELIST || req == RM_HIDELIST) {
 		write_string(fd, argv[2]);
 	}
-	daemon_response code = read_int(fd);
+	int code = read_int(fd);
 	switch (code) {
-	case DAEMON_ERROR:
-		fprintf(stderr, "Error occured in daemon...\n");
-		return code;
 	case DAEMON_SUCCESS:
 		break;
 	case ROOT_REQUIRED:
 		fprintf(stderr, "Root is required for this operation\n");
 		return code;
+	case LOGD_DISABLED:
+		fprintf(stderr, "Logd is not running, cannot run logcat\n");
+		return (code);
 	case HIDE_NOT_ENABLED:
 		fprintf(stderr, "Magisk hide is not enabled yet\n");
 		return code;
@@ -151,6 +159,10 @@ int magiskhide_main(int argc, char *argv[]) {
 	case HIDE_ITEM_NOT_EXIST:
 		fprintf(stderr, "Process [%s] does not exist in hide list\n", argv[2]);
 		return code;
+	case DAEMON_ERROR:
+	default:
+		fprintf(stderr, "Error occured in daemon...\n");
+		return code;
 	}
 
 	if (req == LS_HIDELIST) {

native/jni/magiskhide/proc_monitor.c

@@ -70,8 +70,6 @@ static void store_zygote_ns(int pid) {
 static void lazy_unmount(const char* mountpoint) {
 	if (umount2(mountpoint, MNT_DETACH) != -1)
 		LOGD("hide_daemon: Unmounted (%s)\n", mountpoint);
-	else
-		LOGD("hide_daemon: Unmount Failed (%s)\n", mountpoint);
 }
 
 static void hide_daemon(int pid, int ppid) {
@@ -176,8 +174,8 @@ void proc_monitor() {
 	// Get the mount namespace of zygote
 	zygote_num = 0;
 	while(!zygote_num) {
-		// Check zygote every 2 secs
-		sleep(2);
+		// Check zygote every 10 ms
+		usleep(10000);
 		ps_filter_proc_name("zygote", store_zygote_ns);
 	}
 	ps_filter_proc_name("zygote64", store_zygote_ns);

native/jni/resetprop/system_properties.cpp

@@ -1116,7 +1116,8 @@ static bool initialize_properties() {
     if (!initialize_properties_from_file("/system/etc/selinux/plat_property_contexts")) {
       return false;
     }
-    if (!initialize_properties_from_file("/vendor/etc/selinux/nonplat_property_contexts")) {
+    if (!initialize_properties_from_file("/vendor/etc/selinux/nonplat_property_contexts")
+            && !initialize_properties_from_file("/vendor/etc/selinux/vendor_property_contexts")) {
       return false;
     }
   } else {

native/jni/utils/cpio.c

@@ -46,7 +46,7 @@ int cpio_cmp(const void *a, const void *b) {
 
 void cpio_vec_insert(struct vector *v, cpio_entry *n) {
 	int i = cpio_find(v, n->filename);
-	if (i > 0) {
+	if (i >= 0) {
 		// Replace, then all is done
 		cpio_free(vec_entry(v)[i]);
 		vec_entry(v)[i] = n;
@@ -56,10 +56,11 @@ void cpio_vec_insert(struct vector *v, cpio_entry *n) {
 }
 
 // Parse cpio file to a vector of cpio_entry
+#define parse_align() lseek(fd, align(lseek(fd, 0, SEEK_CUR), 4), SEEK_SET)
 void parse_cpio(struct vector *v, const char *filename) {
-	fprintf(stderr, "Loading cpio: [%s]\n", filename);
 	int fd = open(filename, O_RDONLY);
 	if (fd < 0) return;
+	fprintf(stderr, "Loading cpio: [%s]\n", filename);
 	cpio_newc_header header;
 	cpio_entry *f;
 	while(xxread(fd, &header, 110) != -1) {
@@ -79,7 +80,7 @@ void parse_cpio(struct vector *v, const char *filename) {
 		// f->check = x8u(header.check);
 		f->filename = xmalloc(namesize);
 		xxread(fd, f->filename, namesize);
-		file_align(fd, 4, 0);
+		parse_align();
 		if (strcmp(f->filename, ".") == 0 || strcmp(f->filename, "..") == 0) {
 			cpio_free(f);
 			continue;
@@ -91,13 +92,14 @@ void parse_cpio(struct vector *v, const char *filename) {
 		if (f->filesize) {
 			f->data = xmalloc(f->filesize);
 			xxread(fd, f->data, f->filesize);
-			file_align(fd, 4, 0);
+			parse_align();
 		}
 		vec_push_back(v, f);
 	}
 	close(fd);
 }
 
+#define dump_align() write_zero(fd, align_off(lseek(fd, 0, SEEK_CUR), 4))
 void dump_cpio(struct vector *v, const char *filename) {
 	fprintf(stderr, "Dump cpio: [%s]\n", filename);
 	unsigned inode = 300000;
@@ -124,17 +126,17 @@ void dump_cpio(struct vector *v, const char *filename) {
 		);
 		xwrite(fd, header, 110);
 		xwrite(fd, e->filename, strlen(e->filename) + 1);
-		file_align(fd, 4, 1);
+		dump_align();
 		if (e->filesize) {
 			xwrite(fd, e->data, e->filesize);
-			file_align(fd, 4, 1);
+			dump_align();
 		}
 	}
 	// Write trailer
 	sprintf(header, "070701%08x%08x%08x%08x%08x%08x%08x%08x%08x%08x%08x%08x%08x", inode++, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 11, 0);
 	xwrite(fd, header, 110);
 	xwrite(fd, "TRAILER!!!\0", 11);
-	file_align(fd, 4, 1);
+	dump_align();
 	close(fd);
 }
 

native/jni/utils/file.c

@@ -34,7 +34,7 @@ int fd_getpath(int fd, char *path, size_t size) {
 	return 0;
 }
 
-int mkdir_p(const char *pathname, mode_t mode) {
+int mkdirs(const char *pathname, mode_t mode) {
 	char *path = strdup(pathname), *p;
 	errno = 0;
 	for (p = path + 1; *p; ++p) {
@@ -107,7 +107,7 @@ void mv_f(const char *source, const char *destination) {
 	struct file_attr a;
 
 	if (S_ISDIR(st.st_mode)) {
-		xmkdir_p(destination, st.st_mode & 0777);
+		xmkdirs(destination, st.st_mode & 0777);
 		src = xopen(source, O_RDONLY | O_CLOEXEC);
 		dest = xopen(destination, O_RDONLY | O_CLOEXEC);
 		fclone_attr(src, dest);
@@ -162,7 +162,7 @@ void cp_afc(const char *source, const char *destination) {
 	getattr(source, &a);
 
 	if (S_ISDIR(a.st.st_mode)) {
-		xmkdir_p(destination, a.st.st_mode & 0777);
+		xmkdirs(destination, a.st.st_mode & 0777);
 		src = xopen(source, O_RDONLY | O_CLOEXEC);
 		dest = xopen(destination, O_RDONLY | O_CLOEXEC);
 		fsetattr(dest, &a);
@@ -228,6 +228,33 @@ void clone_dir(int src, int dest) {
 	}
 }
 
+void link_dir(int src, int dest) {
+	struct dirent *entry;
+	DIR *dir;
+	int newsrc, newdest;
+	struct file_attr a;
+
+	dir = xfdopendir(src);
+	while ((entry = xreaddir(dir))) {
+		if (strcmp(entry->d_name, ".") == 0 || strcmp(entry->d_name, "..") == 0)
+			continue;
+		if (is_excl(entry->d_name))
+			continue;
+		if (entry->d_type == DT_DIR) {
+			getattrat(src, entry->d_name, &a);
+			xmkdirat(dest, entry->d_name, a.st.st_mode & 0777);
+			setattrat(dest, entry->d_name, &a);
+			newsrc = xopenat(src, entry->d_name, O_RDONLY | O_CLOEXEC);
+			newdest = xopenat(dest, entry->d_name, O_RDONLY | O_CLOEXEC);
+			link_dir(newsrc, newdest);
+			close(newsrc);
+			close(newdest);
+		} else {
+			linkat(src, entry->d_name, dest, entry->d_name, 0);
+		}
+	}
+}
+
 int getattr(const char *path, struct file_attr *a) {
 	if (xlstat(path, &a->st) == -1)
 		return -1;
@@ -374,8 +401,9 @@ int mmap_rw(const char *filename, void **buf, size_t *size) {
 void fd_full_read(int fd, void **buf, size_t *size) {
 	*size = lseek(fd, 0, SEEK_END);
 	lseek(fd, 0, SEEK_SET);
-	*buf = xmalloc(*size);
+	*buf = xmalloc(*size + 1);
 	xxread(fd, *buf, *size);
+	((char *) *buf)[*size] = '\0';
 }
 
 void full_read(const char *filename, void **buf, size_t *size) {
@@ -424,24 +452,3 @@ void write_zero(int fd, size_t size) {
 	ftruncate(fd, pos + size);
 	lseek(fd, pos + size, SEEK_SET);
 }
-
-void mem_align(size_t *pos, size_t align) {
-	size_t mask = align - 1;
-	if (*pos & mask) {
-		*pos += align - (*pos & mask);
-	}
-}
-
-void file_align(int fd, size_t align, int out) {
-	size_t pos = lseek(fd, 0, SEEK_CUR);
-	size_t mask = align - 1;
-	size_t off;
-	if (pos & mask) {
-		off = align - (pos & mask);
-		if (out) {
-			write_zero(fd, off);
-		} else {
-			lseek(fd, pos + off, SEEK_SET);
-		}
-	}
-}

native/jni/utils/img.c

@@ -3,9 +3,11 @@
 
 #include <unistd.h>
 #include <libgen.h>
+#include <fcntl.h>
 #include <sys/types.h>
 #include <sys/wait.h>
 #include <sys/mount.h>
+#include <sys/sendfile.h>
 #include <linux/loop.h>
 
 #include "magisk.h"
@@ -56,11 +58,13 @@ int create_img(const char *img, int size) {
 	LOGI("Create %s with size %dM\n", img, size);
 	int ret;
 
-	char buffer[16];
-	snprintf(buffer, sizeof(buffer), "%dM", size);
-	ret = exec_command_sync("make_ext4fs", "-l", buffer, img, NULL);
-	if (ret < 0)
-		return 1;
+	char size_str[16];
+	snprintf(size_str, sizeof(size_str), "%dM", size);
+	ret = exec_command_sync("make_ext4fs", "-b", "4096", "-l", size_str, img, NULL);
+	if (ret < 0) {
+		// On Android P there is no make_ext4fs, use mke2fs
+		ret = exec_command_sync("mke2fs", "-b", "4096", "-t", "ext4", img, size_str, NULL);
+	}
 	return ret;
 }
 
@@ -84,8 +88,8 @@ int get_img_size(const char *img, int *used, int *total) {
 			}
 			if (status) continue;
 			sscanf(tok, "%d/%d", used, total);
-			*used = *used / 256 + 1;
-			*total /= 256;
+			*used = (*used + 255) / 256;
+			*total = (*total + 128) / 256;
 			break;
 		}
 	}
@@ -139,9 +143,9 @@ char *mount_image(const char *img, const char *target) {
 	if (access(img, F_OK) == -1)
 		return NULL;
 	if (access(target, F_OK) == -1) {
-		if (xmkdir_p(target, 0755) == -1) {
+		if (xmkdirs(target, 0755) == -1) {
 			xmount(NULL, "/", NULL, MS_REMOUNT, NULL);
-			xmkdir_p(target, 0755);
+			xmkdirs(target, 0755);
 			xmount(NULL, "/", NULL, MS_REMOUNT | MS_RDONLY, NULL);
 		}
 	}
@@ -167,7 +171,15 @@ int merge_img(const char *source, const char *target) {
 		return 0;
 	LOGI("* Merging %s  -> %s\n", source, target);
 	if (access(target, F_OK) == -1) {
-		xrename(source, target);
+		if (rename(source, target) < 0) {
+			// Copy and remove
+			int tgt = creat(target, 0644);
+			int src = xopen(source, O_RDONLY | O_CLOEXEC);
+			sendfile(tgt, src, 0, INT_MAX);
+			close(tgt);
+			close(src);
+			unlink(source);
+		}
 		return 0;
 	}
 

native/jni/utils/misc.c

@@ -17,9 +17,11 @@
 #include <sys/wait.h>
 #include <sys/stat.h>
 #include <sys/inotify.h>
+#include <sys/sysmacros.h>
 
 #include "logging.h"
 #include "utils.h"
+#include "resetprop.h"
 
 unsigned get_shell_uid() {
 	struct passwd* ppwd = getpwnam("shell");
@@ -46,18 +48,41 @@ unsigned get_radio_uid() {
 }
 
 int check_data() {
-	int ret = 0;
-	char buffer[4096];
-	FILE *fp = xfopen("/proc/mounts", "r");
-	while (fgets(buffer, sizeof(buffer), fp)) {
-		if (strstr(buffer, " /data ")) {
-			if (strstr(buffer, "tmpfs") == NULL)
-				ret = 1;
+	struct vector v;
+	vec_init(&v);
+	file_to_vector("/proc/mounts", &v);
+	char *line;
+	int mnt = 0;
+	vec_for_each(&v, line) {
+		if (strstr(line, " /data ")) {
+			if (strstr(line, "tmpfs") == NULL)
+				mnt = 1;
 			break;
 		}
 	}
-	fclose(fp);
-	return ret;
+	vec_deep_destroy(&v);
+	int data = 0;
+	if (mnt) {
+		char *crypto = getprop("ro.crypto.state");
+		if (crypto != NULL) {
+			if (strcmp(crypto, "unencrypted") == 0) {
+				// Unencrypted, we can directly access data
+				data = 1;
+			} else {
+				// Encrypted, check whether vold is started
+				char *vold = getprop("init.svc.vold");
+				if (vold != NULL) {
+					free(vold);
+					data = 1;
+				}
+			}
+			free(crypto);
+		} else {
+			// ro.crypto.state is not set, assume it's unencrypted
+			data = 1;
+		}
+	}
+	return data;
 }
 
 /* All the string should be freed manually!! */
@@ -106,7 +131,12 @@ static int is_num(const char *s) {
 ssize_t fdgets(char *buf, const size_t size, int fd) {
 	ssize_t len = 0;
 	buf[0] = '\0';
-	while (read(fd, buf + len, 1) >= 0 && len < size - 1) {
+	while (len < size - 1) {
+		int ret = read(fd, buf + len, 1);
+		if (ret < 0)
+			return -1;
+		if (ret == 0)
+			break;
 		if (buf[len] == '\0' || buf[len++] == '\n') {
 			buf[len] = '\0';
 			break;
@@ -250,7 +280,7 @@ static int v_exec_command(int err, int *fd, void (*setupenv)(struct vector*), co
 	}
 
 	execvpe(argv0, (char **) vec_entry(&args), envp);
-	PLOGE("execvpe");
+	PLOGE("execvpe %s", argv0);
 	return -1;
 }
 
@@ -277,7 +307,7 @@ int exec_command(int err, int *fd, void (*setupenv)(struct vector*), const char
 int bind_mount(const char *from, const char *to) {
 	int ret = xmount(from, to, NULL, MS_BIND, NULL);
 #ifdef MAGISK_DEBUG
-	LOGI("bind_mount: %s -> %s\n", from, to);
+	LOGI("bind_mount: %s <- %s\n", to, from);
 #else
 	LOGI("bind_mount: %s\n", to);
 #endif
@@ -299,7 +329,7 @@ int switch_mnt_ns(int pid) {
 	fd = xopen(mnt, O_RDONLY);
 	if (fd < 0) return 1;
 	// Switch to its namespace
-	ret = setns(fd, 0);
+	ret = xsetns(fd, 0);
 	close(fd);
 	return ret;
 }
@@ -331,3 +361,21 @@ void wait_till_exists(const char *target) {
 	}
 	close(fd);
 }
+
+void gen_rand_str(char *buf, int len) {
+	const char base[] = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_.";
+	int urandom;
+	if (access("/dev/urandom", R_OK) == 0) {
+		urandom = xopen("/dev/urandom", O_RDONLY | O_CLOEXEC);
+	} else {
+		mknod("/urandom", S_IFCHR | 0666, makedev(1, 9));
+		urandom = xopen("/urandom", O_RDONLY | O_CLOEXEC);
+		unlink("/urandom");
+	}
+	xxread(urandom, buf, len - 1);
+	close(urandom);
+	for (int i = 0; i < len - 1; ++i) {
+		buf[i] = base[buf[i] % (sizeof(base) - 1)];
+	}
+	buf[len - 1] = '\0';
+}