Function zip_extract_entry

src/cli/cli.c:2519–2563

Decompress a single zip entry (stored or deflated). Returns malloc'd buffer * or NULL on failure. *out_len receives the decompressed size. */

/* Decompress a single zip entry (stored or deflated). Returns malloc'd buffer
 * or NULL on failure. *out_len receives the decompressed size. */
static unsigned char *zip_extract_entry(const unsigned char *file_data, uint16_t method,
                                        size_t comp_size, size_t uncomp_size, int *out_len) {
    if (method == ZIP_STORED) {
        if (comp_size > ZIP_MAX_UNCOMP) {
            return NULL;
        }
        unsigned char *out = malloc(comp_size);
        if (!out) {
            return NULL;
        }
        memcpy(out, file_data, comp_size);
        *out_len = (int)comp_size;
        return out;
    }
    if (method == ZIP_DEFLATE) {
        if (uncomp_size > ZIP_MAX_UNCOMP) {
            return NULL;
        }
        if (comp_size > UINT_MAX || uncomp_size > UINT_MAX) {
            return NULL;
        }
        unsigned char *out = malloc(uncomp_size);
        if (!out) {
            return NULL;
        }
        z_stream strm = {0};
        strm.next_in = (unsigned char *)file_data;
        strm.avail_in = (uInt)comp_size;
        strm.next_out = out;
        strm.avail_out = (uInt)uncomp_size;
        if (inflateInit2(&strm, -MAX_WBITS) != Z_OK) {
            free(out);
            return NULL;
        }
        int ret = inflate(&strm, Z_FINISH);
        inflateEnd(&strm);
        if (ret != Z_STREAM_END) {
            free(out);
            return NULL;
        }
        *out_len = (int)strm.total_out;
        return out;
    }
    return NULL; /* unknown method */
}

unsigned char *cbm_extract_binary_from_zip(const unsigned char *data, int data_len, int *out_len) {
    if (!data || data_len <= 0 || !out_len) {