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Remove unused code and logic

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This commit is contained in:
topjohnwu 2023-07-17 18:58:48 -07:00
parent af65d07456
commit f33343b4e6
9 changed files with 11 additions and 687 deletions
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46
app/src/main/java/com/topjohnwu/magisk/core/tasks/MagiskInstaller.kt
View File

@ -20,13 +20,11 @@ import com.topjohnwu.magisk.core.isRunningAsStub
import com.topjohnwu.magisk.core.ktx.copyAndClose
import com.topjohnwu.magisk.core.ktx.reboot
import com.topjohnwu.magisk.core.ktx.toast
import com.topjohnwu.magisk.core.ktx.withStreams
import com.topjohnwu.magisk.core.ktx.writeTo
import com.topjohnwu.magisk.core.utils.MediaStoreUtils
import com.topjohnwu.magisk.core.utils.MediaStoreUtils.inputStream
import com.topjohnwu.magisk.core.utils.MediaStoreUtils.outputStream
import com.topjohnwu.magisk.core.utils.RootUtils
import com.topjohnwu.magisk.signing.SignBoot
import com.topjohnwu.superuser.Shell
import com.topjohnwu.superuser.ShellUtils
import com.topjohnwu.superuser.internal.NOPList
@ -481,22 +479,6 @@ abstract class MagiskInstallImpl protected constructor(
}
private fun patchBoot(): Boolean {
var isSigned = false
if (!srcBoot.isCharacter) {
try {
srcBoot.newInputStream().use {
if (SignBoot.verifySignature(it, null)) {
isSigned = true
console.add("- Boot image is signed with AVB 1.0")
}
}
} catch (e: IOException) {
console.add("! Unable to check signature")
Timber.e(e)
return false
}
}
val newBoot = installDir.getChildFile("new-boot.img")
if (!useRootDir) {
// Create output files before hand
@ -511,31 +493,11 @@ abstract class MagiskInstallImpl protected constructor(
"PATCHVBMETAFLAG=${Config.patchVbmeta} " +
"RECOVERYMODE=${Config.recovery} " +
"SYSTEM_ROOT=${Info.isSAR} " +
"sh boot_patch.sh $srcBoot")
"sh boot_patch.sh $srcBoot",
"./magiskboot cleanup",
"cd /")
if (!cmds.sh().isSuccess)
return false
val job = shell.newJob().add("./magiskboot cleanup", "cd /")
if (isSigned) {
console.add("- Signing boot image with verity keys")
val signed = File.createTempFile("signed", ".img", context.cacheDir)
try {
val src = newBoot.newInputStream().buffered()
val out = signed.outputStream().buffered()
withStreams(src, out) { _, _ ->
SignBoot.doSignature(null, null, src, out, "/boot")
}
} catch (e: IOException) {
console.add("! Unable to sign image")
Timber.e(e)
return false
}
job.add("cat $signed > $newBoot", "rm -f $signed")
}
job.exec()
return true
return cmds.sh().isSuccess
}
private fun flashBoot() = "direct_install $installDir $srcBoot".sh().isSuccess

115
app/src/main/java/com/topjohnwu/magisk/signing/CryptoUtils.java
View File

@ -1,115 +0,0 @@
package com.topjohnwu.magisk.signing;
import org.bouncycastle.asn1.ASN1InputStream;
import org.bouncycastle.asn1.ASN1ObjectIdentifier;
import org.bouncycastle.asn1.pkcs.PKCSObjectIdentifiers;
import org.bouncycastle.asn1.pkcs.PrivateKeyInfo;
import org.bouncycastle.asn1.x509.AlgorithmIdentifier;
import org.bouncycastle.asn1.x9.X9ObjectIdentifiers;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.security.GeneralSecurityException;
import java.security.Key;
import java.security.KeyFactory;
import java.security.PrivateKey;
import java.security.PublicKey;
import java.security.cert.CertificateFactory;
import java.security.cert.X509Certificate;
import java.security.spec.ECPrivateKeySpec;
import java.security.spec.ECPublicKeySpec;
import java.security.spec.InvalidKeySpecException;
import java.security.spec.PKCS8EncodedKeySpec;
import java.util.HashMap;
import java.util.Map;
public class CryptoUtils {
static final Map<String, String> ID_TO_ALG;
static final Map<String, String> ALG_TO_ID;
static {
ID_TO_ALG = new HashMap<>();
ALG_TO_ID = new HashMap<>();
ID_TO_ALG.put(X9ObjectIdentifiers.ecdsa_with_SHA256.getId(), "SHA256withECDSA");
ID_TO_ALG.put(X9ObjectIdentifiers.ecdsa_with_SHA384.getId(), "SHA384withECDSA");
ID_TO_ALG.put(X9ObjectIdentifiers.ecdsa_with_SHA512.getId(), "SHA512withECDSA");
ID_TO_ALG.put(PKCSObjectIdentifiers.sha1WithRSAEncryption.getId(), "SHA1withRSA");
ID_TO_ALG.put(PKCSObjectIdentifiers.sha256WithRSAEncryption.getId(), "SHA256withRSA");
ID_TO_ALG.put(PKCSObjectIdentifiers.sha512WithRSAEncryption.getId(), "SHA512withRSA");
ALG_TO_ID.put("SHA256withECDSA", X9ObjectIdentifiers.ecdsa_with_SHA256.getId());
ALG_TO_ID.put("SHA384withECDSA", X9ObjectIdentifiers.ecdsa_with_SHA384.getId());
ALG_TO_ID.put("SHA512withECDSA", X9ObjectIdentifiers.ecdsa_with_SHA512.getId());
ALG_TO_ID.put("SHA1withRSA", PKCSObjectIdentifiers.sha1WithRSAEncryption.getId());
ALG_TO_ID.put("SHA256withRSA", PKCSObjectIdentifiers.sha256WithRSAEncryption.getId());
ALG_TO_ID.put("SHA512withRSA", PKCSObjectIdentifiers.sha512WithRSAEncryption.getId());
}
static String getSignatureAlgorithm(Key key) throws Exception {
if ("EC".equals(key.getAlgorithm())) {
int curveSize;
KeyFactory factory = KeyFactory.getInstance("EC");
if (key instanceof PublicKey) {
ECPublicKeySpec spec = factory.getKeySpec(key, ECPublicKeySpec.class);
curveSize = spec.getParams().getCurve().getField().getFieldSize();
} else if (key instanceof PrivateKey) {
ECPrivateKeySpec spec = factory.getKeySpec(key, ECPrivateKeySpec.class);
curveSize = spec.getParams().getCurve().getField().getFieldSize();
} else {
throw new InvalidKeySpecException();
}
if (curveSize <= 256) {
return "SHA256withECDSA";
} else if (curveSize <= 384) {
return "SHA384withECDSA";
} else {
return "SHA512withECDSA";
}
} else if ("RSA".equals(key.getAlgorithm())) {
return "SHA256withRSA";
} else {
throw new IllegalArgumentException("Unsupported key type " + key.getAlgorithm());
}
}
static AlgorithmIdentifier getSignatureAlgorithmIdentifier(Key key) throws Exception {
String id = ALG_TO_ID.get(getSignatureAlgorithm(key));
if (id == null) {
throw new IllegalArgumentException("Unsupported key type " + key.getAlgorithm());
}
return new AlgorithmIdentifier(new ASN1ObjectIdentifier(id));
}
public static X509Certificate readCertificate(InputStream input)
throws IOException, GeneralSecurityException {
try {
CertificateFactory cf = CertificateFactory.getInstance("X.509");
return (X509Certificate) cf.generateCertificate(input);
} finally {
input.close();
}
}
/** Read a PKCS#8 format private key. */
public static PrivateKey readPrivateKey(InputStream input)
throws IOException, GeneralSecurityException {
try {
ByteArrayStream buf = new ByteArrayStream();
buf.readFrom(input);
byte[] bytes = buf.toByteArray();
/* Check to see if this is in an EncryptedPrivateKeyInfo structure. */
PKCS8EncodedKeySpec spec = new PKCS8EncodedKeySpec(bytes);
/*
* Now it's in a PKCS#8 PrivateKeyInfo structure. Read its Algorithm
* OID and use that to construct a KeyFactory.
*/
ASN1InputStream bIn = new ASN1InputStream(new ByteArrayInputStream(spec.getEncoded()));
PrivateKeyInfo pki = PrivateKeyInfo.getInstance(bIn.readObject());
String algOid = pki.getPrivateKeyAlgorithm().getAlgorithm().getId();
return KeyFactory.getInstance(algOid).generatePrivate(spec);
} finally {
input.close();
}
}
}

382
app/src/main/java/com/topjohnwu/magisk/signing/SignBoot.java
View File

@ -1,382 +0,0 @@
package com.topjohnwu.magisk.signing;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import org.bouncycastle.asn1.ASN1Encodable;
import org.bouncycastle.asn1.ASN1EncodableVector;
import org.bouncycastle.asn1.ASN1InputStream;
import org.bouncycastle.asn1.ASN1Integer;
import org.bouncycastle.asn1.ASN1Object;
import org.bouncycastle.asn1.ASN1ObjectIdentifier;
import org.bouncycastle.asn1.ASN1Primitive;
import org.bouncycastle.asn1.ASN1Sequence;
import org.bouncycastle.asn1.DEROctetString;
import org.bouncycastle.asn1.DERPrintableString;
import org.bouncycastle.asn1.DERSequence;
import org.bouncycastle.asn1.x509.AlgorithmIdentifier;
import java.io.ByteArrayInputStream;
import java.io.FileInputStream;
import java.io.FilterInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.security.PrivateKey;
import java.security.PublicKey;
import java.security.Signature;
import java.security.cert.CertificateEncodingException;
import java.security.cert.CertificateFactory;
import java.security.cert.X509Certificate;
import java.util.Arrays;
public class SignBoot {
private static final int BOOT_IMAGE_HEADER_V1_RECOVERY_DTBO_SIZE_OFFSET = 1632;
private static final int BOOT_IMAGE_HEADER_V2_DTB_SIZE_OFFSET = 1648;
// Arbitrary maximum header version value; when greater assume the field is dt/extra size
private static final int BOOT_IMAGE_HEADER_VERSION_MAXIMUM = 8;
// Maximum header size byte value to read (currently the bootimg minimum page size)
private static final int BOOT_IMAGE_HEADER_SIZE_MAXIMUM = 2048;
private static class PushBackRWStream extends FilterInputStream {
private OutputStream out;
private int pos = 0;
private byte[] backBuf;
PushBackRWStream(InputStream in, OutputStream o) {
super(in);
out = o;
}
@Override
public int read() throws IOException {
int b;
if (backBuf != null && backBuf.length > pos) {
b = backBuf[pos++];
} else {
b = super.read();
out.write(b);
}
return b;
}
@Override
public int read(byte[] bytes, int off, int len) throws IOException {
int read = 0;
if (backBuf != null && backBuf.length > pos) {
read = Math.min(len, backBuf.length - pos);
System.arraycopy(backBuf, pos, bytes, off, read);
pos += read;
off += read;
len -= read;
}
if (len > 0) {
int ar = super.read(bytes, off, len);
read += ar;
out.write(bytes, off, ar);
}
return read;
}
void unread(byte[] buf) {
backBuf = buf;
}
}
private static int fullRead(InputStream in, byte[] b) throws IOException {
return fullRead(in, b, 0, b.length);
}
private static int fullRead(InputStream in, byte[] b, int off, int len) throws IOException {
int n = 0;
while (n < len) {
int count = in.read(b, off + n, len - n);
if (count <= 0)
break;
n += count;
}
return n;
}
public static boolean doSignature(
@Nullable X509Certificate cert, @Nullable PrivateKey key,
@NonNull InputStream imgIn, @NonNull OutputStream imgOut, @NonNull String target
) {
try {
PushBackRWStream in = new PushBackRWStream(imgIn, imgOut);
byte[] hdr = new byte[BOOT_IMAGE_HEADER_SIZE_MAXIMUM];
// First read the header
fullRead(in, hdr);
int signableSize = getSignableImageSize(hdr);
// Unread header
in.unread(hdr);
BootSignature bootsig = new BootSignature(target, signableSize);
if (cert == null) {
cert = CryptoUtils.readCertificate(
new ByteArrayInputStream(KeyData.verityCert()));
}
bootsig.setCertificate(cert);
if (key == null) {
key = CryptoUtils.readPrivateKey(
new ByteArrayInputStream(KeyData.verityKey()));
}
byte[] sig = bootsig.sign(key, in, signableSize);
bootsig.setSignature(sig, CryptoUtils.getSignatureAlgorithmIdentifier(key));
byte[] encoded_bootsig = bootsig.getEncoded();
imgOut.write(encoded_bootsig);
imgOut.flush();
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
public static boolean verifySignature(InputStream imgIn, X509Certificate cert) {
try {
// Read the header for size
byte[] hdr = new byte[BOOT_IMAGE_HEADER_SIZE_MAXIMUM];
if (fullRead(imgIn, hdr) != hdr.length) {
System.err.println("Unable to read image header");
return false;
}
int signableSize = getSignableImageSize(hdr);
// Read the rest of the image
byte[] rawImg = Arrays.copyOf(hdr, signableSize);
int remain = signableSize - hdr.length;
if (fullRead(imgIn, rawImg, hdr.length, remain) != remain) {
System.err.println("Unable to read image");
return false;
}
// Read footer, which contains the signature
byte[] signature = new byte[4096];
if (imgIn.read(signature) == -1 || Arrays.equals(signature, new byte [signature.length])) {
System.err.println("Invalid image: not signed");
return false;
}
BootSignature bootsig = new BootSignature(signature);
if (cert != null) {
bootsig.setCertificate(cert);
}
if (bootsig.verify(rawImg, signableSize)) {
System.err.println("Signature is VALID");
return true;
} else {
System.err.println("Signature is INVALID");
}
} catch (Exception e) {
e.printStackTrace();
return false;
}
return false;
}
public static int getSignableImageSize(byte[] data) throws Exception {
if (!Arrays.equals(Arrays.copyOfRange(data, 0, 8),
"ANDROID!".getBytes("US-ASCII"))) {
throw new IllegalArgumentException("Invalid image header: missing magic");
}
ByteBuffer image = ByteBuffer.wrap(data);
image.order(ByteOrder.LITTLE_ENDIAN);
image.getLong(); // magic
int kernelSize = image.getInt();
image.getInt(); // kernel_addr
int ramdskSize = image.getInt();
image.getInt(); // ramdisk_addr
int secondSize = image.getInt();
image.getLong(); // second_addr + tags_addr
int pageSize = image.getInt();
if (pageSize >= 0x02000000) {
throw new IllegalArgumentException("Invalid image header: PXA header detected");
}
int length = pageSize // include the page aligned image header
+ ((kernelSize + pageSize - 1) / pageSize) * pageSize
+ ((ramdskSize + pageSize - 1) / pageSize) * pageSize
+ ((secondSize + pageSize - 1) / pageSize) * pageSize;
int headerVersion = image.getInt(); // boot image header version or dt/extra size
if (headerVersion > 0 && headerVersion < BOOT_IMAGE_HEADER_VERSION_MAXIMUM) {
image.position(BOOT_IMAGE_HEADER_V1_RECOVERY_DTBO_SIZE_OFFSET);
int recoveryDtboLength = image.getInt();
length += ((recoveryDtboLength + pageSize - 1) / pageSize) * pageSize;
image.getLong(); // recovery_dtbo address
int headerSize = image.getInt();
if (headerVersion == 2) {
image.position(BOOT_IMAGE_HEADER_V2_DTB_SIZE_OFFSET);
int dtbLength = image.getInt();
length += ((dtbLength + pageSize - 1) / pageSize) * pageSize;
image.getLong(); // dtb address
}
if (image.position() != headerSize) {
throw new IllegalArgumentException("Invalid image header: invalid header length");
}
} else {
// headerVersion is 0 or actually dt/extra size in this case
length += ((headerVersion + pageSize - 1) / pageSize) * pageSize;
}
length = ((length + pageSize - 1) / pageSize) * pageSize;
if (length <= 0) {
throw new IllegalArgumentException("Invalid image header: invalid length");
}
return length;
}
static class BootSignature extends ASN1Object {
private ASN1Integer formatVersion;
private ASN1Encodable certificate;
private AlgorithmIdentifier algId;
private DERPrintableString target;
private ASN1Integer length;
private DEROctetString signature;
private PublicKey publicKey;
private static final int FORMAT_VERSION = 1;
/**
* Initializes the object for signing an image file
* @param target Target name, included in the signed data
* @param length Length of the image, included in the signed data
*/
public BootSignature(String target, int length) {
this.formatVersion = new ASN1Integer(FORMAT_VERSION);
this.target = new DERPrintableString(target);
this.length = new ASN1Integer(length);
}
/**
* Initializes the object for verifying a signed image file
* @param signature Signature footer
*/
public BootSignature(byte[] signature) throws Exception {
ASN1InputStream stream = new ASN1InputStream(signature);
ASN1Sequence sequence = (ASN1Sequence) stream.readObject();
formatVersion = (ASN1Integer) sequence.getObjectAt(0);
if (formatVersion.getValue().intValue() != FORMAT_VERSION) {
throw new IllegalArgumentException("Unsupported format version");
}
certificate = sequence.getObjectAt(1);
byte[] encoded = ((ASN1Object) certificate).getEncoded();
ByteArrayInputStream bis = new ByteArrayInputStream(encoded);
CertificateFactory cf = CertificateFactory.getInstance("X.509");
X509Certificate c = (X509Certificate) cf.generateCertificate(bis);
publicKey = c.getPublicKey();
ASN1Sequence algId = (ASN1Sequence) sequence.getObjectAt(2);
this.algId = new AlgorithmIdentifier((ASN1ObjectIdentifier) algId.getObjectAt(0));
ASN1Sequence attrs = (ASN1Sequence) sequence.getObjectAt(3);
target = (DERPrintableString) attrs.getObjectAt(0);
length = (ASN1Integer) attrs.getObjectAt(1);
this.signature = (DEROctetString) sequence.getObjectAt(4);
}
public ASN1Object getAuthenticatedAttributes() {
ASN1EncodableVector attrs = new ASN1EncodableVector();
attrs.add(target);
attrs.add(length);
return new DERSequence(attrs);
}
public byte[] getEncodedAuthenticatedAttributes() throws IOException {
return getAuthenticatedAttributes().getEncoded();
}
public void setSignature(byte[] sig, AlgorithmIdentifier algId) {
this.algId = algId;
signature = new DEROctetString(sig);
}
public void setCertificate(X509Certificate cert)
throws CertificateEncodingException, IOException {
ASN1InputStream s = new ASN1InputStream(cert.getEncoded());
certificate = s.readObject();
publicKey = cert.getPublicKey();
}
public byte[] sign(PrivateKey key, InputStream is, int len) throws Exception {
Signature signer = Signature.getInstance(CryptoUtils.getSignatureAlgorithm(key));
signer.initSign(key);
int read;
byte buffer[] = new byte[4096];
while ((read = is.read(buffer, 0, Math.min(len, buffer.length))) > 0) {
signer.update(buffer, 0, read);
len -= read;
}
signer.update(getEncodedAuthenticatedAttributes());
return signer.sign();
}
public boolean verify(byte[] image, int length) throws Exception {
if (this.length.getValue().intValue() != length) {
throw new IllegalArgumentException("Invalid image length");
}
String algName = CryptoUtils.ID_TO_ALG.get(algId.getAlgorithm().getId());
if (algName == null) {
throw new IllegalArgumentException("Unsupported algorithm " + algId.getAlgorithm());
}
Signature verifier = Signature.getInstance(algName);
verifier.initVerify(publicKey);
verifier.update(image, 0, length);
verifier.update(getEncodedAuthenticatedAttributes());
return verifier.verify(signature.getOctets());
}
@Override
public ASN1Primitive toASN1Primitive() {
ASN1EncodableVector v = new ASN1EncodableVector();
v.add(formatVersion);
v.add(certificate);
v.add(algId);
v.add(getAuthenticatedAttributes());
v.add(signature);
return new DERSequence(v);
}
}
public static void main(String[] args) throws Exception {
if (args.length > 0 && "-verify".equals(args[0])) {
X509Certificate cert = null;
if (args.length >= 2) {
// args[1] is the path to a public key certificate
cert = CryptoUtils.readCertificate(new FileInputStream(args[1]));
}
boolean signed = SignBoot.verifySignature(System.in, cert);
System.exit(signed ? 0 : 1);
} else if (args.length > 0 && "-sign".equals(args[0])) {
X509Certificate cert = null;
PrivateKey key = null;
String name = "/boot";
if (args.length >= 3) {
cert = CryptoUtils.readCertificate(new FileInputStream(args[1]));
key = CryptoUtils.readPrivateKey(new FileInputStream(args[2]));
}
if (args.length == 2) {
name = args[1];
} else if (args.length >= 4) {
name = args[3];
}
boolean result = SignBoot.doSignature(cert, key, System.in, System.out, name);
System.exit(result ? 0 : 1);
} else {
System.err.println(
"BootSigner <actions> [args]\n" +
"Input from stdin, output to stdout\n" +
"\n" +
"Actions:\n" +
" -verify [x509.pem]\n" +
" verify image. cert is optional.\n" +
" -sign [x509.pem] [pk8] [name]\n" +
" sign image. name and the cert/key pair are optional.\n" +
" name should be either /boot (default) or /recovery.\n"
);
}
}
}

13
buildSrc/src/main/java/Codegen.kt
View File

@ -64,19 +64,6 @@ private fun PrintStream.byteField(name: String, bytes: ByteArray) {
println("}")
}
fun genKeyData(keysDir: File, outSrc: File) {
outSrc.parentFile.mkdirs()
PrintStream(outSrc).use {
it.println("package com.topjohnwu.magisk.signing;")
it.println("public final class KeyData {")
it.byteField("verityCert", File(keysDir, "verity.x509.pem").readBytes())
it.byteField("verityKey", File(keysDir, "verity.pk8").readBytes())
it.println("}")
}
}
@CacheableTask
abstract class ManifestUpdater: DefaultTask() {
@get:Input

13
buildSrc/src/main/java/Setup.kt
View File

@ -305,19 +305,6 @@ fun Project.setupApp() {
}
}
mergeAssetsProvider.configure { dependsOn(syncAssets) }
val keysDir = rootProject.file("tools/keys")
val outSrcDir = File(buildDir, "generated/source/keydata/$name")
val outSrc = File(outSrcDir, "com/topjohnwu/magisk/signing/KeyData.java")
val genSrcTask = tasks.register("generate${variantCapped}KeyData") {
inputs.dir(keysDir)
outputs.file(outSrc)
doLast {
genKeyData(keysDir, outSrc)
}
}
registerJavaGeneratingTask(genSrcTask, outSrcDir)
}
}

1
scripts/addon.d.sh
View File

@ -109,7 +109,6 @@ main() {
ui_print "- Device platform: $ABI"
remove_system_su
find_magisk_apk
install_magisk
# Cleanups

1
scripts/flash_script.sh
View File

@ -11,7 +11,6 @@
umask 022
OUTFD=$2
APK="$3"
COMMONDIR=$INSTALLER/assets
CHROMEDIR=$INSTALLER/assets/chromeos

1
scripts/uninstaller.sh
View File

@ -11,7 +11,6 @@
umask 022
OUTFD=$2
APK="$3"
COMMONDIR=$INSTALLER/assets
CHROMEDIR=$INSTALLER/assets/chromeos

126
scripts/util_functions.sh
View File

@ -185,7 +185,7 @@ recovery_actions() {
recovery_cleanup() {
local DIR
ui_print "- Unmounting partitions"
(umount_apex
(
if [ ! -d /postinstall/tmp ]; then
umount -l /system
umount -l /system_root
@ -199,7 +199,8 @@ recovery_cleanup() {
mv -f ${DIR}_link $DIR
fi
done
umount -l /dev/random) 2>/dev/null
umount -l /dev/random
) 2>/dev/null
[ -z $OLD_LD_LIB ] || export LD_LIBRARY_PATH=$OLD_LD_LIB
[ -z $OLD_LD_PRE ] || export LD_PRELOAD=$OLD_LD_PRE
[ -z $OLD_LD_CFG ] || export LD_CONFIG_FILE=$OLD_LD_CFG
@ -306,92 +307,7 @@ mount_partitions() {
SYSTEM_ROOT=false
grep ' / ' /proc/mounts | grep -qv 'rootfs' || grep -q ' /system_root ' /proc/mounts && SYSTEM_ROOT=true
fi
# /vendor is used only on some older devices for recovery AVBv1 signing so is not critical if fails
[ -L /system/vendor ] && mount_name vendor$SLOT /vendor '-o ro'
$SYSTEM_ROOT && ui_print "- Device is system-as-root"
# Allow /system/bin commands (dalvikvm) on Android 10+ in recovery
$BOOTMODE || mount_apex
}
# loop_setup <ext4_img>, sets LOOPDEV
loop_setup() {
unset LOOPDEV
local LOOP
local MINORX=1
[ -e /dev/block/loop1 ] && MINORX=$(stat -Lc '%T' /dev/block/loop1)
local NUM=0
while [ $NUM -lt 64 ]; do
LOOP=/dev/block/loop$NUM
[ -e $LOOP ] || mknod $LOOP b 7 $((NUM * MINORX))
if losetup $LOOP "$1" 2>/dev/null; then
LOOPDEV=$LOOP
break
fi
NUM=$((NUM + 1))
done
}
mount_apex() {
$BOOTMODE || [ ! -d /system/apex ] && return
local APEX DEST
setup_mntpoint /apex
mount -t tmpfs tmpfs /apex -o mode=755
local PATTERN='s/.*"name":[^"]*"\([^"]*\).*/\1/p'
for APEX in /system/apex/*; do
if [ -f $APEX ]; then
# handle CAPEX APKs, extract actual APEX APK first
unzip -qo $APEX original_apex -d /apex
[ -f /apex/original_apex ] && APEX=/apex/original_apex # unzip doesn't do return codes
# APEX APKs, extract and loop mount
unzip -qo $APEX apex_payload.img -d /apex
DEST=$(unzip -qp $APEX apex_manifest.pb | strings | head -n 1 | tr -dc '[:alnum:].-_\n')
[ -z $DEST ] && DEST=$(unzip -qp $APEX apex_manifest.json | sed -n $PATTERN)
[ -z $DEST ] && continue
DEST=/apex/$DEST
mkdir -p $DEST
loop_setup /apex/apex_payload.img
if [ ! -z $LOOPDEV ]; then
ui_print "- Mounting $DEST"
mount -t ext4 -o ro,noatime $LOOPDEV $DEST
fi
rm -f /apex/original_apex /apex/apex_payload.img
elif [ -d $APEX ]; then
# APEX folders, bind mount directory
if [ -f $APEX/apex_manifest.json ]; then
DEST=/apex/$(sed -n $PATTERN $APEX/apex_manifest.json)
elif [ -f $APEX/apex_manifest.pb ]; then
DEST=/apex/$(strings $APEX/apex_manifest.pb | head -n 1 | tr -dc '[:alnum:].-_\n')
else
continue
fi
mkdir -p $DEST
ui_print "- Mounting $DEST"
mount -o bind $APEX $DEST
fi
done
export ANDROID_RUNTIME_ROOT=/apex/com.android.runtime
export ANDROID_TZDATA_ROOT=/apex/com.android.tzdata
export ANDROID_ART_ROOT=/apex/com.android.art
export ANDROID_I18N_ROOT=/apex/com.android.i18n
local APEXJARS=$(find /apex -name '*.jar' | sort | tr '\n' ':')
local FWK=/system/framework
export BOOTCLASSPATH=${APEXJARS}\
$FWK/framework.jar:$FWK/ext.jar:$FWK/telephony-common.jar:\
$FWK/voip-common.jar:$FWK/ims-common.jar:$FWK/telephony-ext.jar
}
umount_apex() {
[ -d /apex ] || return
umount -l /apex
for loop in /dev/block/loop*; do
losetup -d $loop 2>/dev/null
done
unset ANDROID_RUNTIME_ROOT
unset ANDROID_TZDATA_ROOT
unset ANDROID_ART_ROOT
unset ANDROID_I18N_ROOT
unset BOOTCLASSPATH
}
# After calling this method, the following variables will be set:
@ -452,16 +368,11 @@ find_boot_image() {
}
flash_image() {
local CMD1
case "$1" in
*.gz) CMD1="gzip -d < '$1' 2>/dev/null";;
*) CMD1="cat '$1'";;
esac
if $BOOTSIGNED; then
CMD2="$BOOTSIGNER -sign"
ui_print "- Sign image with verity keys"
else
CMD2="cat -"
fi
if [ -b "$2" ]; then
local img_sz=$(stat -c '%s' "$1")
local blk_sz=$(blockdev --getsize64 "$2")
@ -469,13 +380,13 @@ flash_image() {
blockdev --setrw "$2"
local blk_ro=$(blockdev --getro "$2")
[ "$blk_ro" -eq 1 ] && return 2
eval "$CMD1" | eval "$CMD2" | cat - /dev/zero > "$2" 2>/dev/null
eval "$CMD1" | cat - /dev/zero > "$2" 2>/dev/null
elif [ -c "$2" ]; then
flash_eraseall "$2" >&2
eval "$CMD1" | eval "$CMD2" | nandwrite -p "$2" - >&2
eval "$CMD1" | nandwrite -p "$2" - >&2
else
ui_print "- Not block or char device, storing image"
eval "$CMD1" | eval "$CMD2" > "$2" 2>/dev/null
eval "$CMD1" > "$2" 2>/dev/null
fi
return 0
}
@ -484,11 +395,6 @@ flash_image() {
install_magisk() {
cd $MAGISKBIN
if [ ! -c $BOOTIMAGE ]; then
eval $BOOTSIGNER -verify < $BOOTIMAGE && BOOTSIGNED=true
$BOOTSIGNED && ui_print "- Boot image is signed with AVB 1.0"
fi
# Source the boot patcher
SOURCEDMODE=true
. ./boot_patch.sh "$BOOTIMAGE"
@ -596,19 +502,6 @@ check_data() {
$DATA_DE && set_nvbase "/data/adb"
}
find_magisk_apk() {
local DBAPK
[ -z $APK ] && APK=/data/app/com.topjohnwu.magisk*/base.apk
[ -f $APK ] || APK=/data/app/*/com.topjohnwu.magisk*/base.apk
if [ ! -f $APK ]; then
DBAPK=$(magisk --sqlite "SELECT value FROM strings WHERE key='requester'" 2>/dev/null | cut -d= -f2)
[ -z $DBAPK ] && DBAPK=$(strings $NVBASE/magisk.db | grep -oE 'requester..*' | cut -c10-)
[ -z $DBAPK ] || APK=/data/user_de/0/$DBAPK/dyn/current.apk
[ -f $APK ] || [ -z $DBAPK ] || APK=/data/data/$DBAPK/dyn/current.apk
fi
[ -f $APK ] || ui_print "! Unable to detect Magisk app APK for BootSigner"
}
run_migrations() {
local LOCSHA1
local TARGET
@ -830,8 +723,3 @@ install_module() {
TMPDIR=/dev/tmp
set_nvbase "/data/adb"
# Bootsigner related stuff
BOOTSIGNERCLASS=com.topjohnwu.magisk.signing.SignBoot
BOOTSIGNER='/system/bin/dalvikvm -Xnoimage-dex2oat -cp $APK $BOOTSIGNERCLASS'
BOOTSIGNED=false