diff options
Diffstat (limited to 'src/lib/protocols/bittorrent.c')
| -rw-r--r-- | src/lib/protocols/bittorrent.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/src/lib/protocols/bittorrent.c b/src/lib/protocols/bittorrent.c index f49c7f31a..f78706195 100644 --- a/src/lib/protocols/bittorrent.c +++ b/src/lib/protocols/bittorrent.c @@ -477,8 +477,11 @@ void ndpi_search_bittorrent(struct ndpi_detection_module_struct *ndpi_struct, st || (bt_proto = ndpi_strnstr((const char *)packet->payload, "BitTorrent protocol", packet->payload_packet_len)) ) { bittorrent_found: - if(bt_proto && (packet->payload_packet_len > 47)) - memcpy(flow->protos.bittorrent.hash, &bt_proto[27], 20); + if(bt_proto != NULL && ((u_int8_t *)&bt_proto[27] - packet->payload + + sizeof(flow->protos.bittorrent.hash)) < packet->payload_packet_len) + { + memcpy(flow->protos.bittorrent.hash, &bt_proto[27], sizeof(flow->protos.bittorrent.hash)); + } NDPI_LOG_INFO(ndpi_struct, "found BT: plain\n"); ndpi_add_connection_as_bittorrent(ndpi_struct, flow, -1, 0, |