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Restructure native codebase
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topjohnwu
192
native/jni/boot/main.cpp
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192
native/jni/boot/main.cpp
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#include <mincrypt/sha.h>
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#include <base.hpp>
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#include "magiskboot.hpp"
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#include "compress.hpp"
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using namespace std;
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static void print_formats() {
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for (int fmt = GZIP; fmt < LZOP; ++fmt) {
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fprintf(stderr, "%s ", fmt2name[(format_t) fmt]);
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}
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}
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static void usage(char *arg0) {
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fprintf(stderr,
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R"EOF(MagiskBoot - Boot Image Modification Tool
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Usage: %s <action> [args...]
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Supported actions:
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unpack [-n] [-h] <bootimg>
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Unpack <bootimg> to, if available, kernel, kernel_dtb, ramdisk.cpio,
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second, dtb, extra, and recovery_dtbo into current directory.
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If '-n' is provided, it will not attempt to decompress kernel or
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ramdisk.cpio from their original formats.
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If '-h' is provided, it will dump header info to 'header',
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which will be parsed when repacking.
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Return values:
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0:valid 1:error 2:chromeos
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repack [-n] <origbootimg> [outbootimg]
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Repack boot image components from current directory
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to [outbootimg], or new-boot.img if not specified.
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If '-n' is provided, it will not attempt to recompress ramdisk.cpio,
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otherwise it will compress ramdisk.cpio and kernel with the same format
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as in <origbootimg> if the file provided is not already compressed.
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If env variable PATCHVBMETAFLAG is set to true, all disable flags will
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be set in the vbmeta header.
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hexpatch <file> <hexpattern1> <hexpattern2>
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Search <hexpattern1> in <file>, and replace with <hexpattern2>
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cpio <incpio> [commands...]
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Do cpio commands to <incpio> (modifications are done in-place)
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Each command is a single argument, add quotes for each command
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Supported commands:
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exists ENTRY
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Return 0 if ENTRY exists, else return 1
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rm [-r] ENTRY
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Remove ENTRY, specify [-r] to remove recursively
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mkdir MODE ENTRY
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Create directory ENTRY in permissions MODE
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ln TARGET ENTRY
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Create a symlink to TARGET with the name ENTRY
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mv SOURCE DEST
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Move SOURCE to DEST
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add MODE ENTRY INFILE
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Add INFILE as ENTRY in permissions MODE; replaces ENTRY if exists
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extract [ENTRY OUT]
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Extract ENTRY to OUT, or extract all entries to current directory
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test
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Test the current cpio's status
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Return value is 0 or bitwise or-ed of following values:
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0x1:Magisk 0x2:unsupported 0x4:Sony
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patch
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Apply ramdisk patches
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Configure with env variables: KEEPVERITY KEEPFORCEENCRYPT
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backup ORIG
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Create ramdisk backups from ORIG
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restore
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Restore ramdisk from ramdisk backup stored within incpio
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sha1
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Print stock boot SHA1 if previously backed up in ramdisk
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dtb <input> <action> [args...]
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Do dtb related actions to <input>
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Supported actions:
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print [-f]
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Print all contents of dtb for debugging
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Specify [-f] to only print fstab nodes
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patch
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Search for fstab and remove verity/avb
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Modifications are done directly to the file in-place
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Configure with env variables: KEEPVERITY
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split <input>
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Split image.*-dtb into kernel + kernel_dtb
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sha1 <file>
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Print the SHA1 checksum for <file>
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cleanup
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Cleanup the current working directory
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compress[=format] <infile> [outfile]
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Compress <infile> with [format] (default: gzip), optionally to [outfile]
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<infile>/[outfile] can be '-' to be STDIN/STDOUT
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Supported formats: )EOF", arg0);
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print_formats();
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fprintf(stderr, R"EOF(
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decompress <infile> [outfile]
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Detect format and decompress <infile>, optionally to [outfile]
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<infile>/[outfile] can be '-' to be STDIN/STDOUT
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Supported formats: )EOF");
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print_formats();
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fprintf(stderr, "\n\n");
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exit(1);
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}
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int main(int argc, char *argv[]) {
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cmdline_logging();
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umask(0);
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if (argc < 2)
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usage(argv[0]);
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// Skip '--' for backwards compatibility
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string_view action(argv[1]);
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if (str_starts(action, "--"))
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action = argv[1] + 2;
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if (action == "cleanup") {
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fprintf(stderr, "Cleaning up...\n");
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unlink(HEADER_FILE);
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unlink(KERNEL_FILE);
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unlink(RAMDISK_FILE);
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unlink(SECOND_FILE);
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unlink(KER_DTB_FILE);
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unlink(EXTRA_FILE);
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unlink(RECV_DTBO_FILE);
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unlink(DTB_FILE);
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} else if (argc > 2 && action == "sha1") {
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uint8_t sha1[SHA_DIGEST_SIZE];
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auto m = mmap_data(argv[2]);
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SHA_hash(m.buf, m.sz, sha1);
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for (uint8_t i : sha1)
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printf("%02x", i);
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printf("\n");
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} else if (argc > 2 && action == "split") {
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return split_image_dtb(argv[2]);
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} else if (argc > 2 && action == "unpack") {
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int idx = 2;
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bool nodecomp = false;
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bool hdr = false;
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for (;;) {
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if (idx >= argc)
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usage(argv[0]);
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if (argv[idx][0] != '-')
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break;
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for (char *flag = &argv[idx][1]; *flag; ++flag) {
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if (*flag == 'n')
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nodecomp = true;
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else if (*flag == 'h')
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hdr = true;
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else
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usage(argv[0]);
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}
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++idx;
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}
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return unpack(argv[idx], nodecomp, hdr);
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} else if (argc > 2 && action == "repack") {
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if (argv[2] == "-n"sv) {
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if (argc == 3)
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usage(argv[0]);
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repack(argv[3], argv[4] ? argv[4] : NEW_BOOT, true);
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} else {
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repack(argv[2], argv[3] ? argv[3] : NEW_BOOT);
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}
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} else if (argc > 2 && action == "decompress") {
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decompress(argv[2], argv[3]);
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} else if (argc > 2 && str_starts(action, "compress")) {
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compress(action[8] == '=' ? &action[9] : "gzip", argv[2], argv[3]);
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} else if (argc > 4 && action == "hexpatch") {
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return hexpatch(argv[2], argv[3], argv[4]);
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} else if (argc > 2 && action == "cpio"sv) {
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if (cpio_commands(argc - 2, argv + 2))
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usage(argv[0]);
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} else if (argc > 3 && action == "dtb") {
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if (dtb_commands(argc - 2, argv + 2))
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usage(argv[0]);
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} else {
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usage(argv[0]);
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}
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return 0;
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}
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