diff options
| -rw-r--r-- | orkaudio/audiocaptureplugins/voip/PacketHeaderDefs.h | 2 | ||||
| -rw-r--r-- | orkaudio/audiocaptureplugins/voip/VoIp.cpp | 12 |
2 files changed, 12 insertions, 2 deletions
diff --git a/orkaudio/audiocaptureplugins/voip/PacketHeaderDefs.h b/orkaudio/audiocaptureplugins/voip/PacketHeaderDefs.h index 5ea6f45..cf88d90 100644 --- a/orkaudio/audiocaptureplugins/voip/PacketHeaderDefs.h +++ b/orkaudio/audiocaptureplugins/voip/PacketHeaderDefs.h @@ -26,7 +26,7 @@ typedef struct { unsigned char destinationMac[6]; unsigned char sourceMac[6]; - unsigned short length; + unsigned short type; } EthernetHeaderStruct; diff --git a/orkaudio/audiocaptureplugins/voip/VoIp.cpp b/orkaudio/audiocaptureplugins/voip/VoIp.cpp index 55a5443..2ee0b95 100644 --- a/orkaudio/audiocaptureplugins/voip/VoIp.cpp +++ b/orkaudio/audiocaptureplugins/voip/VoIp.cpp @@ -3046,7 +3046,17 @@ void HandlePacket(u_char *param, const struct pcap_pkthdr *header, const u_char } EthernetHeaderStruct* ethernetHeader = (EthernetHeaderStruct *)pkt_data; - IpHeaderStruct* ipHeader = (IpHeaderStruct*)((char*)ethernetHeader + sizeof(EthernetHeaderStruct)); + IpHeaderStruct* ipHeader = NULL; + + if(ntohs(ethernetHeader->type) == 0x8100) + { + ipHeader = (IpHeaderStruct*)((char*)ethernetHeader + sizeof(EthernetHeaderStruct) + 4); + } + else + { + ipHeader = (IpHeaderStruct*)((char*)ethernetHeader + sizeof(EthernetHeaderStruct)); + } + if(ipHeader->ip_v != 4) // sanity check, is it an IP packet v4 { // If not, the IP packet might have been captured from multiple interfaces using the tcpdump -i switch |