Function tar_try_extract_binary

src/cli/cli.c:2419–2442

Try to extract the target binary from a tar entry. Returns malloc'd data or NULL. */

/* Try to extract the target binary from a tar entry. Returns malloc'd data or NULL. */
static unsigned char *tar_try_extract_binary(const unsigned char *hdr, char typeflag,
                                             const char *name, const unsigned char *archive,
                                             size_t data_pos, long file_size, size_t total,
                                             int *out_len) {
    (void)hdr;
    if (typeflag != '0' && typeflag != '\0') {
        return NULL;
    }
    const char *basename = strrchr(name, '/');
    basename = basename ? basename + CLI_SKIP_ONE : name;
    if (strncmp(basename, TAR_BINARY_NAME, TAR_BINARY_NAME_LEN) != 0) {
        return NULL;
    }
    if (data_pos + (size_t)file_size > total) {
        return NULL;
    }
    unsigned char *result = malloc((size_t)file_size);
    if (!result) {
        return NULL;
    }
    memcpy(result, archive + data_pos, (size_t)file_size);
    *out_len = (int)file_size;
    return result;
}

unsigned char *cbm_extract_binary_from_targz(const unsigned char *data, int data_len,
                                             int *out_len) {