Magisk/native/jni/magiskboot/main.cpp
2019-03-28 04:54:06 -04:00

168 lines
5.4 KiB
C++

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <sys/mman.h>
#include <mincrypt/sha.h>
#include <logging.h>
#include <utils.h>
#include <flags.h>
#include "magiskboot.h"
#include "compress.h"
static void usage(char *arg0) {
fprintf(stderr,
FULL_VER(MagiskBoot) " - Boot Image Modification Tool\n"
"Usage: %s <action> [args...]\n"
"\n"
"Supported actions:\n"
" unpack [-h] <bootimg>\n"
" Unpack <bootimg> to, if available, kernel, kernel_dtb, ramdisk.cpio,\n"
" second, dtb, extra, and recovery_dtbo into current directory.\n"
" If '-h' is provided, it will dump header info to 'header',\n"
" which will be parsed when repacking.\n"
" Return values:\n"
" 0:valid 1:error 2:chromeos\n"
"\n"
" repack <origbootimg> [outbootimg]\n"
" Repack boot image components from current directory\n"
" to [outbootimg], or new-boot.img if not specified.\n"
" It will compress ramdisk.cpio and kernel with the same method in\n"
" <origbootimg> if the file provided is not already compressed.\n"
"\n"
" hexpatch <file> <hexpattern1> <hexpattern2>\n"
" Search <hexpattern1> in <file>, and replace with <hexpattern2>\n"
"\n"
" cpio <incpio> [commands...]\n"
" Do cpio commands to <incpio> (modifications are done directly)\n"
" Each command is a single argument, use quotes if necessary\n"
" Supported commands:\n"
" exists ENTRY\n"
" Return 0 if ENTRY exists, else return 1\n"
" rm [-r] ENTRY\n"
" Remove ENTRY, specify [-r] to remove recursively\n"
" mkdir MODE ENTRY\n"
" Create directory ENTRY in permissions MODE\n"
" ln TARGET ENTRY\n"
" Create a symlink to TARGET with the name ENTRY\n"
" mv SOURCE DEST\n"
" Move SOURCE to DEST\n"
" add MODE ENTRY INFILE\n"
" Add INFILE as ENTRY in permissions MODE; replaces ENTRY if exists\n"
" extract [ENTRY OUT]\n"
" Extract ENTRY to OUT, or extract all entries to current directory\n"
" test\n"
" Test the current cpio's patch status\n"
" Return values:\n"
" 0:stock 1:Magisk 2:unsupported (phh, SuperSU, Xposed)\n"
" patch KEEPVERITY KEEPFORCEENCRYPT\n"
" Ramdisk patches. KEEP**** are boolean values\n"
" backup ORIG\n"
" Create ramdisk backups from ORIG\n"
" restore\n"
" Restore ramdisk from ramdisk backup stored within incpio\n"
" sha1\n"
" Print stock boot SHA1 if previously backed up in ramdisk\n"
"\n"
" dtb-<cmd> <dtb>\n"
" Do dtb related cmds to <dtb> (modifications are done directly)\n"
" Supported commands:\n"
" dump\n"
" Dump all contents from dtb for debugging\n"
" test\n"
" Check if fstab has verity/avb flags\n"
" Return values:\n"
" 0:no flags 1:flag exists\n"
" patch\n"
" Search for fstab and remove verity/avb\n"
"\n"
" compress[=method] <infile> [outfile]\n"
" Compress <infile> with [method] (default: gzip), optionally to [outfile]\n"
" <infile>/[outfile] can be '-' to be STDIN/STDOUT\n"
" Supported methods: "
, arg0);
for (auto &it : name2fmt)
fprintf(stderr, "%s ", it.first.data());
fprintf(stderr,
"\n\n"
" decompress <infile> [outfile]\n"
" Detect method and decompress <infile>, optionally to [outfile]\n"
" <infile>/[outfile] can be '-' to be STDIN/STDOUT\n"
" Supported methods: ");
for (auto &it : name2fmt)
fprintf(stderr, "%s ", it.first.data());
fprintf(stderr,
"\n\n"
" sha1 <file>\n"
" Print the SHA1 checksum for <file>\n"
"\n"
" cleanup\n"
" Cleanup the current working directory\n"
"\n");
exit(1);
}
int main(int argc, char *argv[]) {
cmdline_logging();
umask(0);
if (argc < 2)
usage(argv[0]);
// Skip '--' for backwards compatibility
if (strncmp(argv[1], "--", 2) == 0)
argv[1] += 2;
if (strcmp(argv[1], "cleanup") == 0) {
fprintf(stderr, "Cleaning up...\n");
unlink(HEADER_FILE);
unlink(KERNEL_FILE);
unlink(RAMDISK_FILE);
unlink(SECOND_FILE);
unlink(KER_DTB_FILE);
unlink(EXTRA_FILE);
unlink(RECV_DTBO_FILE);
unlink(DTB_FILE);
} else if (argc > 2 && strcmp(argv[1], "sha1") == 0) {
uint8_t sha1[SHA_DIGEST_SIZE];
void *buf;
size_t size;
mmap_ro(argv[2], buf, size);
SHA_hash(buf, size, sha1);
for (uint8_t i : sha1)
printf("%02x", i);
printf("\n");
munmap(buf, size);
} else if (argc > 2 && strcmp(argv[1], "unpack") == 0) {
if (strcmp(argv[2], "-h") == 0) {
if (argc == 3)
usage(argv[0]);
return unpack(argv[3], true);
} else {
return unpack(argv[2]);
}
} else if (argc > 2 && strcmp(argv[1], "repack") == 0) {
repack(argv[2], argv[3] ? argv[3] : NEW_BOOT);
} else if (argc > 2 && strcmp(argv[1], "decompress") == 0) {
decompress(argv[2], argv[3]);
} else if (argc > 2 && strncmp(argv[1], "compress", 8) == 0) {
compress(argv[1][8] == '=' ? &argv[1][9] : "gzip", argv[2], argv[3]);
} else if (argc > 4 && strcmp(argv[1], "hexpatch") == 0) {
hexpatch(argv[2], argv[3], argv[4]);
} else if (argc > 2 && strcmp(argv[1], "cpio") == 0) {
if (cpio_commands(argc - 2, argv + 2)) usage(argv[0]);
} else if (argc > 2 && strncmp(argv[1], "dtb", 3) == 0) {
if (argv[1][3] != '-')
usage(argv[0]);
if (dtb_commands(&argv[1][4], argc - 2, argv + 2))
usage(argv[0]);
} else {
usage(argv[0]);
}
return 0;
}