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