gfwleak/tango-tsg-service-chaining-engine
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bugfix: TSG-19996 parse the packet as GTP-U when source port or dest port is 2152.

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luwenpeng
2024-03-19 17:36:46 +08:00
parent e1146eab2e
commit d00af3a2ac
1 changed files with 10 additions and 8 deletions
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18
common/src/packet.cpp
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@@ -863,17 +863,19 @@ static inline const char *parse_udp(struct packet *handler, const char *data, ui
struct udphdr *hdr = (struct udphdr *)data; struct udphdr *hdr = (struct udphdr *)data;
SET_LAYER(handler, layer, LAYER_TYPE_UDP, sizeof(struct udphdr), data, len); SET_LAYER(handler, layer, LAYER_TYPE_UDP, sizeof(struct udphdr), data, len);
switch (ntohs(hdr->uh_dport)) // VXLAN_DPORT 4789
if (ntohs(hdr->uh_dport) == 4789)
{ {
// VXLAN_DPORT
case 4789:
return parse_vxlan(handler, layer->pld_ptr, layer->pld_len); return parse_vxlan(handler, layer->pld_ptr, layer->pld_len);
// GTP1U_PORT
case 2152:
return parse_gtpv1_u(handler, layer->pld_ptr, layer->pld_len);
default:
return layer->pld_ptr;
} }
// GTP1U_PORT 2152
if (ntohs(hdr->uh_dport) == 2152 || ntohs(hdr->uh_sport) == 2152)
{
return parse_gtpv1_u(handler, layer->pld_ptr, layer->pld_len);
}
return layer->pld_ptr;
} }
static inline const char *parse_tcp(struct packet *handler, const char *data, uint16_t len) static inline const char *parse_tcp(struct packet *handler, const char *data, uint16_t len)