Properly handle SPTPS packets with stripped Ethernet headers.

diff --git a/src/net_packet.c b/src/net_packet.c
index 69199a7..ac63f62 100644 (file)
--- a/src/net_packet.c
+++ b/src/net_packet.c
@@ -643,6 +643,14 @@ bool receive_sptps_record(void *handle, uint8_t type, const char *data, uint16_t
                return false;
        }
 
+       /* Check if we have the headers we need */
+       if(routing_mode != RMODE_ROUTER && !(type & PKT_MAC)) {
+               logger(DEBUG_TRAFFIC, LOG_ERR, "Received packet from %s (%s) without MAC header (maybe Mode is not set correctly)", from->name, from->hostname);
+               return false;
+       } else if(routing_mode == RMODE_ROUTER && (type & PKT_MAC)) {
+               logger(DEBUG_TRAFFIC, LOG_WARNING, "Received packet from %s (%s) with MAC header (maybe Mode is not set correctly)", from->name, from->hostname);
+       }
+
        int offset = (type & PKT_MAC) ? 0 : 14;
        if(type & PKT_COMPRESSED) {
                len = uncompress_packet(inpkt.data + offset, (const uint8_t *)data, len, from->incompression);
@@ -658,6 +666,25 @@ bool receive_sptps_record(void *handle, uint8_t type, const char *data, uint16_t
                inpkt.len = len + offset;
        }
 
+       /* Generate the Ethernet packet type if necessary */
+       if(offset) {
+               switch(inpkt.data[14] >> 4) {
+                       case 4:
+                               inpkt.data[12] = 0x08;
+                               inpkt.data[13] = 0x00;
+                               break;
+                       case 6:
+                               inpkt.data[12] = 0x86;
+                               inpkt.data[13] = 0xDD;
+                               break;
+                       default:
+                               logger(DEBUG_TRAFFIC, LOG_ERR,
+                                                  "Unknown IP version %d while reading packet from %s (%s)",
+                                                  inpkt.data[14] >> 4, from->name, from->hostname);
+                               return false;
+               }
+       }
+
        receive_packet(from, &inpkt);
        return true;
 }