diff options
Diffstat (limited to 'src/lib')
| -rw-r--r-- | src/lib/ndpi_content_match.c.inc | 2 | ||||
| -rw-r--r-- | src/lib/ndpi_main.c | 11 | ||||
| -rw-r--r-- | src/lib/protocols/tailscale.c | 59 |
3 files changed, 68 insertions, 4 deletions
diff --git a/src/lib/ndpi_content_match.c.inc b/src/lib/ndpi_content_match.c.inc index 7d52ddcf0..4a88ccbbd 100644 --- a/src/lib/ndpi_content_match.c.inc +++ b/src/lib/ndpi_content_match.c.inc @@ -1788,6 +1788,8 @@ static ndpi_protocol_match host_match[] = { "siriusxm.ca", "SiriusXMRadio", NDPI_PROTOCOL_SIRIUSXMRADIO, NDPI_PROTOCOL_CATEGORY_MUSIC, NDPI_PROTOCOL_FUN, NDPI_PROTOCOL_DEFAULT_LEVEL }, { "siriusxm.com", "SiriusXMRadio", NDPI_PROTOCOL_SIRIUSXMRADIO, NDPI_PROTOCOL_CATEGORY_MUSIC, NDPI_PROTOCOL_FUN, NDPI_PROTOCOL_DEFAULT_LEVEL }, + { "tailscale.com", "Tailscale", NDPI_PROTOCOL_TAILSCALE, NDPI_PROTOCOL_CATEGORY_VPN, NDPI_PROTOCOL_ACCEPTABLE, NDPI_PROTOCOL_DEFAULT_LEVEL }, + #ifdef CUSTOM_NDPI_PROTOCOLS #include "../../../nDPI-custom/custom_ndpi_content_match_host_match.c.inc" #endif diff --git a/src/lib/ndpi_main.c b/src/lib/ndpi_main.c index bc53a7597..c2034afa8 100644 --- a/src/lib/ndpi_main.c +++ b/src/lib/ndpi_main.c @@ -1138,10 +1138,6 @@ static void ndpi_init_protocol_defaults(struct ndpi_detection_module_struct *ndp "Free22", NDPI_PROTOCOL_CATEGORY_DOWNLOAD_FT, 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_POTENTIALLY_DANGEROUS, NDPI_PROTOCOL_FREE_24, - "Free24", NDPI_PROTOCOL_CATEGORY_DOWNLOAD_FT, - 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_POTENTIALLY_DANGEROUS, NDPI_PROTOCOL_FREE_25, "Free25", NDPI_PROTOCOL_CATEGORY_DOWNLOAD_FT, ndpi_build_default_ports(ports_a, 0, 0, 0, 0, 0) /* TCP */, @@ -2082,6 +2078,10 @@ static void ndpi_init_protocol_defaults(struct ndpi_detection_module_struct *ndp "TPLINK_SHP", NDPI_PROTOCOL_CATEGORY_IOT_SCADA, ndpi_build_default_ports(ports_a, 9999, 0, 0, 0, 0) /* TCP */, ndpi_build_default_ports(ports_b, 9999, 0, 0, 0, 0) /* UDP */); + ndpi_set_proto_defaults(ndpi_str, 0 /* encrypted */, 1 /* app proto */, NDPI_PROTOCOL_ACCEPTABLE, NDPI_PROTOCOL_TAILSCALE, + "Tailscale", NDPI_PROTOCOL_CATEGORY_VPN, + ndpi_build_default_ports(ports_a, 0, 0, 0, 0, 0) /* TCP */, + ndpi_build_default_ports(ports_b, 41641, 0, 0, 0, 0) /* UDP */); #ifdef CUSTOM_NDPI_PROTOCOLS @@ -4765,6 +4765,9 @@ static int ndpi_callback_init(struct ndpi_detection_module_struct *ndpi_str) { /* Meraki Cloud */ init_merakicloud_dissector(ndpi_str, &a); + /* Tailscale */ + init_tailscale_dissector(ndpi_str, &a); + #ifdef CUSTOM_NDPI_PROTOCOLS #include "../../../nDPI-custom/custom_ndpi_main_init.c" #endif diff --git a/src/lib/protocols/tailscale.c b/src/lib/protocols/tailscale.c new file mode 100644 index 000000000..ac6669ccc --- /dev/null +++ b/src/lib/protocols/tailscale.c @@ -0,0 +1,59 @@ +/* + * tailscale.c + * + * Copyright (C) 2022 - ntop.org + * + * nDPI is free software: you can zmqtribute 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_TAILSCALE + +#include "ndpi_api.h" + +/* https://github.com/tailscale/tailscale/blob/main/disco/disco.go + * https://tailscale.com/kb/1082/firewall-ports/ + */ + +static void ndpi_search_tailscale(struct ndpi_detection_module_struct *ndpi_struct, + struct ndpi_flow_struct *flow) +{ + struct ndpi_packet_struct *packet = &ndpi_struct->packet; + unsigned char magic[6] = { 0x54, 0x53, 0xf0, 0x9f, 0x92, 0xac }; + unsigned short port = 41641; + + NDPI_LOG_DBG(ndpi_struct, "search Tailscale\n"); + + if(packet->payload_packet_len > sizeof(magic) && + (ntohs(flow->c_port) == port || ntohs(flow->s_port) == port) && + memcmp(packet->payload, magic, sizeof(magic)) == 0) { + NDPI_LOG_INFO(ndpi_struct, "found Tailscale\n"); + ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_TAILSCALE, NDPI_PROTOCOL_UNKNOWN, NDPI_CONFIDENCE_DPI); + return; + } + + NDPI_EXCLUDE_PROTO(ndpi_struct, flow); +} + +void init_tailscale_dissector(struct ndpi_detection_module_struct *ndpi_struct, + u_int32_t *id) { + ndpi_set_bitmask_protocol_detection("Tailscale", ndpi_struct, *id, + NDPI_PROTOCOL_TAILSCALE, + ndpi_search_tailscale, + NDPI_SELECTION_BITMASK_PROTOCOL_V4_V6_UDP_WITH_PAYLOAD, + SAVE_DETECTION_BITMASK_AS_UNKNOWN, + ADD_TO_DETECTION_BITMASK); + *id += 1; +} |