Magisk/jni/bootimgtools.c

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#include <getopt.h>
#include <stdio.h>
#include "bootimgtools.h"
/********************
Patch Boot Image
*********************/
int usage(char *arg0) {
fprintf(stderr, "Boot Image Unpack/Repack Tool\n");
fprintf(stderr, "%s --extract <bootimage>\n", arg0);
fprintf(stderr, " Unpack <bootimage> into current directory\n\n");
fprintf(stderr, "%s --repack <bootimage>\n", arg0);
fprintf(stderr, " Repack kernel, dt, ramdisk... from current directory to new-image.img\n <bootimage> is the image you've just unpacked\n\n");
fprintf(stderr, "%s --hexpatch <bootimage> <hexpattern1> <hexpattern2>\n", arg0);
fprintf(stderr, " Search <hexpattern1> in <bootimage>, and replace with <hexpattern2>\n\n");
return 1;
}
int main(int argc, char *argv[])
{
char ch;
struct option long_options[] = {
{"extract", required_argument, NULL, 'e'},
{"repack", required_argument, NULL, 'r'},
{"hexpatch", required_argument, NULL, 'p'},
{NULL, 0, NULL, 0}
};
while ((ch = getopt_long(argc, argv, "e:r:p:", long_options, NULL)) != -1) {
switch (ch) {
case 'e':
return extract(optarg);
case 'r':
return repack(optarg);
case 'p':
if (argc < 5) return usage(argv[0]);
optind += 2;
return hexpatch(argv[optind - 3], argv[optind - 2], argv[optind - 1]);
default:
return usage(argv[0]);
}
}
return 0;
}