diff options
Diffstat (limited to 'src/lib')
| -rw-r--r-- | src/lib/ndpi_main.c | 7 | ||||
| -rw-r--r-- | src/lib/protocols/tivoconnect.c | 147 |
2 files changed, 154 insertions, 0 deletions
diff --git a/src/lib/ndpi_main.c b/src/lib/ndpi_main.c index 0f59ca608..711b4187a 100644 --- a/src/lib/ndpi_main.c +++ b/src/lib/ndpi_main.c @@ -1962,6 +1962,10 @@ static void ndpi_init_protocol_defaults(struct ndpi_detection_module_struct *ndp "AVAST", NDPI_PROTOCOL_CATEGORY_NETWORK, ndpi_build_default_ports(ports_a, 0, 0, 0, 0, 0) /* TCP */, ndpi_build_default_ports(ports_b, 0, 0, 0, 0, 0) /* UDP */); + ndpi_set_proto_defaults(ndpi_str, 1 /* cleartext */, 0 /* nw proto */, NDPI_PROTOCOL_SAFE, NDPI_PROTOCOL_TIVOCONNECT, + "TiVoConnect", NDPI_PROTOCOL_CATEGORY_NETWORK, + ndpi_build_default_ports(ports_a, 2190, 0, 0, 0, 0) /* TCP */, + ndpi_build_default_ports(ports_b, 2190, 0, 0, 0, 0) /* UDP */); #ifdef CUSTOM_NDPI_PROTOCOLS #include "../../../nDPI-custom/custom_ndpi_main.c" @@ -4547,6 +4551,9 @@ static int ndpi_callback_init(struct ndpi_detection_module_struct *ndpi_str) { /* Discord */ init_discord_dissector(ndpi_str, &a, detection_bitmask); + /* TiVoConnect */ + init_tivoconnect_dissector(ndpi_str, &a, detection_bitmask); + #ifdef CUSTOM_NDPI_PROTOCOLS #include "../../../nDPI-custom/custom_ndpi_main_init.c" #endif diff --git a/src/lib/protocols/tivoconnect.c b/src/lib/protocols/tivoconnect.c new file mode 100644 index 000000000..2d4d59e4c --- /dev/null +++ b/src/lib/protocols/tivoconnect.c @@ -0,0 +1,147 @@ +/* + * tivoconnect.c + * + * Copyright (C) 2022 - ntop.org + * + * nDPI is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * nDPI is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with nDPI. If not, see <http://www.gnu.org/licenses/>. + * + */ + + +#include "ndpi_protocol_ids.h" + +#define NDPI_CURRENT_PROTO NDPI_PROTOCOL_TIVOCONNECT + +#include "ndpi_api.h" + +static void ndpi_int_tivoconnect_add_connection(struct ndpi_detection_module_struct * const ndpi_struct, + struct ndpi_flow_struct * const flow) +{ + NDPI_LOG_INFO(ndpi_struct, "found tivoconnect\n"); + ndpi_set_detected_protocol(ndpi_struct, flow, + NDPI_PROTOCOL_TIVOCONNECT, + NDPI_PROTOCOL_UNKNOWN, + NDPI_CONFIDENCE_DPI); +} + +static void dissect_tivoconnect_data(struct ndpi_detection_module_struct *ndpi_struct, + struct ndpi_flow_struct *flow) +{ + struct ndpi_packet_struct const * const packet = &ndpi_struct->packet; + char const * const payload = (char const *)packet->payload; + size_t const payload_len = packet->payload_packet_len; + char const *key = payload; + char const *newline; + + for (newline = ndpi_strnstr(payload, "\n", payload_len); + newline != NULL; + key = ++newline, + newline = ndpi_strnstr(newline, "\n", payload_len - (newline - payload))) + { + size_t const line_len = newline - key; + char const *value = ndpi_strnstr(key, "=", line_len); + + if (value == NULL) + { + ndpi_set_risk(ndpi_struct, flow, NDPI_MALFORMED_PACKET, "Missing value type in TiViConnect beacon"); + continue; + } + value++; + + size_t const key_len = value - 1 - key; + size_t const value_len = newline - value; + + if (key_len == NDPI_STATICSTRING_LEN("identity") && + strncasecmp(key, "identity", key_len) == 0) + { + if (value_len >= NDPI_STATICSTRING_LEN("uuid:") && + strncasecmp(value, "uuid:", NDPI_STATICSTRING_LEN("uuid:")) == 0) + { + size_t const len = ndpi_min(sizeof(flow->protos.tivoconnect.identity_uuid) - 1, + value_len - NDPI_STATICSTRING_LEN("uuid:")); + strncpy(flow->protos.tivoconnect.identity_uuid, + value + NDPI_STATICSTRING_LEN("uuid:"), len); + flow->protos.tivoconnect.identity_uuid[len] = '\0'; + } + continue; + } + if (key_len == NDPI_STATICSTRING_LEN("machine") && + strncasecmp(key, "machine", key_len) == 0) + { + size_t const len = ndpi_min(sizeof(flow->protos.tivoconnect.machine) - 1, + value_len); + strncpy(flow->protos.tivoconnect.machine, value, len); + flow->protos.tivoconnect.machine[len] = '\0'; + continue; + } + if (key_len == NDPI_STATICSTRING_LEN("platform") && + strncasecmp(key, "platform", key_len) == 0) + { + size_t const len = ndpi_min(sizeof(flow->protos.tivoconnect.platform) - 1, + value_len); + strncpy(flow->protos.tivoconnect.platform, value, len); + flow->protos.tivoconnect.platform[len] = '\0'; + continue; + } + if (key_len == NDPI_STATICSTRING_LEN("services") && + strncasecmp(key, "services", key_len) == 0) + { + size_t const len = ndpi_min(sizeof(flow->protos.tivoconnect.services) - 1, + value_len); + strncpy(flow->protos.tivoconnect.services, value, len); + flow->protos.tivoconnect.services[len] = '\0'; + continue; + } + } + + if ((size_t)(key - payload) != payload_len) + { + ndpi_set_risk(ndpi_struct, flow, NDPI_MALFORMED_PACKET, + "TiViConnect beacon malformed packet"); + } +} + +void ndpi_search_tivoconnect(struct ndpi_detection_module_struct *ndpi_struct, + struct ndpi_flow_struct *flow) +{ + struct ndpi_packet_struct const * const packet = &ndpi_struct->packet; + + NDPI_LOG_INFO(ndpi_struct, "search tivoconnect\n"); + + if (packet->payload_packet_len >= NDPI_STATICSTRING_LEN("tivoconnect=") && + strncasecmp((char const *)packet->payload, + "tivoconnect=", NDPI_STATICSTRING_LEN("tivoconnect=")) == 0) + { + ndpi_int_tivoconnect_add_connection(ndpi_struct, flow); + } else { + NDPI_EXCLUDE_PROTO(ndpi_struct, flow); + return; + } + + dissect_tivoconnect_data(ndpi_struct, flow); +} + +void init_tivoconnect_dissector(struct ndpi_detection_module_struct *ndpi_struct, + u_int32_t *id, NDPI_PROTOCOL_BITMASK *detection_bitmask) +{ + ndpi_set_bitmask_protocol_detection("TiVoConnect", ndpi_struct, detection_bitmask, *id, + NDPI_PROTOCOL_TIVOCONNECT, + ndpi_search_tivoconnect, + NDPI_SELECTION_BITMASK_PROTOCOL_V4_V6_TCP_OR_UDP_WITH_PAYLOAD_WITHOUT_RETRANSMISSION, + SAVE_DETECTION_BITMASK_AS_UNKNOWN, + ADD_TO_DETECTION_BITMASK + ); + + *id += 1; +} |