flexwrapper.cpp

#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>

extern int VERBOSE;
int decrypt_macho(const char *inputFile, const char *outputFile);

int
main(int argc, char* argv[]) {
    int opt;
    while((opt = getopt(argc, argv, "v")) != -1) {
        switch (opt) {
            case 'v':
                VERBOSE = 1;
                break;
            default:
                printf("optopt = %c\n", (char)optopt);
                printf("opterr = %d\n", opterr);
                fprintf(stderr, "usage: %s [-v] encfile\n", argv[0]);
                exit(1);
        } 
    }
    argc -= optind;
    argv += optind;

    if (argc < 1) {
        return 1;
    }
    char outpath[0x200] = { 0 };
    strcpy(outpath, "/tmp/");
    const char *lastPathComponent = strrchr(argv[0], '/');
    if (!lastPathComponent) {
        strcat(outpath, argv[0]);
    } else {
        strcat(outpath, lastPathComponent + 1);
    }
    int ret = decrypt_macho(argv[0], outpath);
    if (!ret) {
        printf("Wrote decrypted image to %s\n", outpath);
    }
    return ret;
}