Merge pull request #76 from ikpil/master

fix missing channelID bounds check

Author: zpl-zak

.gitignore

@@ -10,6 +10,7 @@ x64/
 
 # Other
 .DS_store
+.idea
 
 # local build scripts
 build.sh

include/enet.h

@@ -3654,14 +3654,16 @@ extern "C" {
      *  @retval < 0 on failure
      */
     int enet_peer_send(ENetPeer *peer, enet_uint8 channelID, ENetPacket *packet) {
-        ENetChannel *channel = &peer->channels[channelID];
+        ENetChannel *channel = NULL;
         ENetProtocol command;
         size_t fragmentLength;
 
         if (peer->state != ENET_PEER_STATE_CONNECTED || channelID >= peer->channelCount || packet->dataLength > peer->host->maximumPacketSize) {
             return -1;
         }
 
+        channel = &peer->channels[channelID];
+
         fragmentLength = peer->mtu - sizeof(ENetProtocolHeader) - sizeof(ENetProtocolSendFragment);
         if (peer->host->checksum != NULL) {
             fragmentLength -= sizeof(enet_uint32);
@@ -4141,7 +4143,12 @@ extern "C" {
     }
 
     void enet_peer_setup_outgoing_command(ENetPeer *peer, ENetOutgoingCommand *outgoingCommand) {
-        ENetChannel *channel = &peer->channels[outgoingCommand->command.header.channelID];
+        ENetChannel *channel = NULL;
+
+        if (outgoingCommand->command.header.channelID < peer->channelCount) {
+            channel = &peer->channels[outgoingCommand->command.header.channelID];
+        }
+
         peer->outgoingDataTotal += enet_protocol_command_size(outgoingCommand->command.header.command) + outgoingCommand->fragmentLength;
 
         if (outgoingCommand->command.header.channelID == 0xFF) {