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authorNathan S. Evans <evans@in.tum.de>2010-06-28 10:01:56 +0000
committerNathan S. Evans <evans@in.tum.de>2010-06-28 10:01:56 +0000
commit30fd6fcf51409d4adcb4372c8360eaa235919670 (patch)
treef7df2805e19ecc2924278fa0d0385d4828f38418
parent7f0876ac6807e818368e71108b56abbc1a513169 (diff)
downloadgnunet-30fd6fcf51409d4adcb4372c8360eaa235919670.tar.gz
gnunet-30fd6fcf51409d4adcb4372c8360eaa235919670.zip
more portability changes; so NAT punching also should work
-rw-r--r--src/transport/plugin_transport_udp.c204
1 files changed, 98 insertions, 106 deletions
diff --git a/src/transport/plugin_transport_udp.c b/src/transport/plugin_transport_udp.c
index 0f424b38a..52e598189 100644
--- a/src/transport/plugin_transport_udp.c
+++ b/src/transport/plugin_transport_udp.c
@@ -296,14 +296,9 @@ struct UDP_NAT_Probes
296 GNUNET_SCHEDULER_TaskIdentifier task; 296 GNUNET_SCHEDULER_TaskIdentifier task;
297 297
298 /** 298 /**
299 * Network address (always ipv4) 299 * Network address (always ipv4!)
300 */ 300 */
301 struct sockaddr_in sock_addr; 301 struct IPv4UdpAddress addr;
302
303 /**
304 * The port to send this probe to, 0 to choose randomly
305 */
306 int port;
307 302
308}; 303};
309 304
@@ -553,7 +548,7 @@ udp_real_send (void *cls,
553 548
554 if ((addr == NULL) || (addrlen == 0)) 549 if ((addr == NULL) || (addrlen == 0))
555 { 550 {
556#if DEBUG_UDP_NAT 551#if DEBUG_UDP
557 GNUNET_log_from (GNUNET_ERROR_TYPE_INFO, "udp", _ 552 GNUNET_log_from (GNUNET_ERROR_TYPE_INFO, "udp", _
558 ("udp_real_send called without address, returning!\n")); 553 ("udp_real_send called without address, returning!\n"));
559#endif 554#endif
@@ -638,35 +633,25 @@ udp_real_send (void *cls,
638void 633void
639run_gnunet_nat_client (struct Plugin *plugin, const char *addr, size_t addrlen) 634run_gnunet_nat_client (struct Plugin *plugin, const char *addr, size_t addrlen)
640{ 635{
641 char inet4[INET_ADDRSTRLEN]; 636 char addr_buf[INET_ADDRSTRLEN];
642 char *address_as_string; 637 char *address_as_string;
643 char *port_as_string; 638 char *port_as_string;
644 pid_t pid; 639 pid_t pid;
645 const struct sockaddr *sa = (const struct sockaddr *)addr; 640 const struct IPv4UdpAddress *t4;
646 641
647 if (addrlen < sizeof (struct sockaddr)) 642 GNUNET_assert(addrlen == sizeof(struct IPv4UdpAddress));
648 return; 643 t4 = (struct IPv4UdpAddress *)addr;
649 switch (sa->sa_family) 644
645 if (NULL == inet_ntop (AF_INET,
646 &t4->u_port,
647 addr_buf, INET_ADDRSTRLEN))
650 { 648 {
651 case AF_INET: 649 GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING, "inet_ntop");
652 if (addrlen != sizeof (struct sockaddr_in))
653 return;
654 if (NULL == inet_ntop (AF_INET,
655 &((struct sockaddr_in *) sa)->sin_addr,
656 inet4, INET_ADDRSTRLEN))
657 {
658 GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING, "inet_ntop");
659 return;
660 }
661 address_as_string = GNUNET_strdup (inet4);
662 break;
663 case AF_INET6:
664 default:
665 return; 650 return;
666 } 651 }
667 652 address_as_string = GNUNET_strdup (addr_buf);
668 GNUNET_asprintf(&port_as_string, "%d", plugin->port); 653 GNUNET_asprintf(&port_as_string, "%d", plugin->port);
669#if DEBUG_UDP_NAT 654#if DEBUG_UDP
670 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "udp", 655 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "udp",
671 _("Running gnunet-nat-client with arguments: %s %s %d\n"), plugin->external_address, address_as_string, plugin->port); 656 _("Running gnunet-nat-client with arguments: %s %s %d\n"), plugin->external_address, address_as_string, plugin->port);
672#endif 657#endif
@@ -723,21 +708,18 @@ udp_plugin_send (void *cls,
723 const struct IPv4UdpAddress *t4; 708 const struct IPv4UdpAddress *t4;
724 709
725 GNUNET_assert (NULL == session); 710 GNUNET_assert (NULL == session);
726 other_peer_natd = GNUNET_NO;
727 711
712 other_peer_natd = GNUNET_NO;
728 if (addrlen == sizeof(struct IPv4UdpAddress)) 713 if (addrlen == sizeof(struct IPv4UdpAddress))
729 { 714 {
730 t4 = addr; 715 t4 = addr;
731 if (ntohs(t4->u_port) == 0) 716 if (ntohs(t4->u_port) == 0)
732 other_peer_natd = GNUNET_YES; 717 other_peer_natd = GNUNET_YES;
733 } 718 }
734 else if (addrlen == sizeof(struct IPv6UdpAddress)) 719 else if (addrlen != sizeof(struct IPv6UdpAddress))
735 {
736
737 }
738 else
739 { 720 {
740 GNUNET_break_op(0); 721 GNUNET_break_op(0);
722 return -1; /* Must have an address to send to */
741 } 723 }
742 724
743 sent = 0; 725 sent = 0;
@@ -771,7 +753,7 @@ udp_plugin_send (void *cls,
771 peer_session->messages->timeout = GNUNET_TIME_relative_to_absolute(timeout); 753 peer_session->messages->timeout = GNUNET_TIME_relative_to_absolute(timeout);
772 peer_session->messages->cont = cont; 754 peer_session->messages->cont = cont;
773 peer_session->messages->cont_cls = cont_cls; 755 peer_session->messages->cont_cls = cont_cls;
774#if DEBUG_UDP_NAT 756#if DEBUG_UDP
775 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "udp", 757 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "udp",
776 _("Other peer is NAT'd, set up peer session for peer %s\n"), GNUNET_i2s(target)); 758 _("Other peer is NAT'd, set up peer session for peer %s\n"), GNUNET_i2s(target));
777#endif 759#endif
@@ -958,14 +940,12 @@ send_udp_probe_message (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc
958 message->header.size = htons(sizeof(struct UDP_NAT_ProbeMessage)); 940 message->header.size = htons(sizeof(struct UDP_NAT_ProbeMessage));
959 message->header.type = htons(GNUNET_MESSAGE_TYPE_TRANSPORT_UDP_NAT_PROBE); 941 message->header.type = htons(GNUNET_MESSAGE_TYPE_TRANSPORT_UDP_NAT_PROBE);
960 /* If they gave us a port, use that. If not, try our port. */ 942 /* If they gave us a port, use that. If not, try our port. */
961 if (probe->port != 0) 943 if (ntohs(probe->addr.u_port) == 0)
962 probe->sock_addr.sin_port = htons(probe->port); 944 probe->addr.u_port = htons(plugin->port);
963 else
964 probe->sock_addr.sin_port = htons(plugin->port);
965 945
966#if DEBUG_UDP_NAT 946#if DEBUG_UDP
967 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "udp", 947 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "udp",
968 _("Sending a probe to port %d\n"), ntohs(probe->sock_addr.sin_port)); 948 _("Sending a probe to port %d\n"), ntohs(probe->addr.u_port));
969#endif 949#endif
970 950
971 probe->count++; 951 probe->count++;
@@ -973,7 +953,7 @@ send_udp_probe_message (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc
973 udp_real_send(plugin, udp_sock.desc, NULL, 953 udp_real_send(plugin, udp_sock.desc, NULL,
974 (char *)message, ntohs(message->header.size), 0, 954 (char *)message, ntohs(message->header.size), 0,
975 GNUNET_TIME_relative_get_unit(), 955 GNUNET_TIME_relative_get_unit(),
976 &probe->sock_addr, sizeof(probe->sock_addr), 956 &probe->addr, sizeof(probe->addr),
977 &udp_probe_continuation, probe); 957 &udp_probe_continuation, probe);
978 958
979 GNUNET_free(message); 959 GNUNET_free(message);
@@ -993,7 +973,7 @@ udp_probe_continuation (void *cls, const struct GNUNET_PeerIdentity *target, int
993 973
994 if ((result == GNUNET_OK) && (probe->count < MAX_PROBES)) 974 if ((result == GNUNET_OK) && (probe->count < MAX_PROBES))
995 { 975 {
996#if DEBUG_UDP_NAT 976#if DEBUG_UDP
997 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "udp", 977 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "udp",
998 _("Scheduling next probe for 10000 milliseconds\n")); 978 _("Scheduling next probe for 10000 milliseconds\n"));
999#endif 979#endif
@@ -1001,7 +981,7 @@ udp_probe_continuation (void *cls, const struct GNUNET_PeerIdentity *target, int
1001 } 981 }
1002 else /* Destroy the probe context. */ 982 else /* Destroy the probe context. */
1003 { 983 {
1004#if DEBUG_UDP_NAT 984#if DEBUG_UDP
1005 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "udp", 985 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "udp",
1006 _("Sending probe didn't go well...\n")); 986 _("Sending probe didn't go well...\n"));
1007#endif 987#endif
@@ -1048,7 +1028,7 @@ udp_plugin_server_read (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc
1048 struct UDP_NAT_Probes *temp_probe; 1028 struct UDP_NAT_Probes *temp_probe;
1049 int port; 1029 int port;
1050 char *port_start; 1030 char *port_start;
1051 struct sockaddr_in in_addr; 1031 struct IPv4UdpAddress a4;
1052 1032
1053 if (tc->reason == GNUNET_SCHEDULER_REASON_SHUTDOWN) 1033 if (tc->reason == GNUNET_SCHEDULER_REASON_SHUTDOWN)
1054 return; 1034 return;
@@ -1057,7 +1037,7 @@ udp_plugin_server_read (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc
1057 1037
1058 if (bytes < 1) 1038 if (bytes < 1)
1059 { 1039 {
1060#if DEBUG_UDP_NAT 1040#if DEBUG_UDP
1061 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "udp", 1041 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "udp",
1062 _("Finished reading from server stdout with code: %d\n"), bytes); 1042 _("Finished reading from server stdout with code: %d\n"), bytes);
1063#endif 1043#endif
@@ -1089,7 +1069,7 @@ udp_plugin_server_read (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc
1089 return; 1069 return;
1090 } 1070 }
1091 1071
1092#if DEBUG_UDP_NAT 1072#if DEBUG_UDP
1093 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "udp", 1073 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "udp",
1094 _("nat-server-read read: %s port %d\n"), &mybuf, port); 1074 _("nat-server-read read: %s port %d\n"), &mybuf, port);
1095#endif 1075#endif
@@ -1098,7 +1078,7 @@ udp_plugin_server_read (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc
1098 * We have received an ICMP response, ostensibly from a non-NAT'd peer 1078 * We have received an ICMP response, ostensibly from a non-NAT'd peer
1099 * that wants to connect to us! Send a message to establish a connection. 1079 * that wants to connect to us! Send a message to establish a connection.
1100 */ 1080 */
1101 if (inet_pton(AF_INET, &mybuf[0], &in_addr.sin_addr) != 1) 1081 if (inet_pton(AF_INET, &mybuf[0], &a4.ipv4_addr) != 1)
1102 { 1082 {
1103 1083
1104 GNUNET_log_from (GNUNET_ERROR_TYPE_WARNING, "udp", 1084 GNUNET_log_from (GNUNET_ERROR_TYPE_WARNING, "udp",
@@ -1117,9 +1097,8 @@ udp_plugin_server_read (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc
1117 { 1097 {
1118 temp_probe = GNUNET_malloc(sizeof(struct UDP_NAT_Probes)); 1098 temp_probe = GNUNET_malloc(sizeof(struct UDP_NAT_Probes));
1119 temp_probe->address_string = strdup(&mybuf[0]); 1099 temp_probe->address_string = strdup(&mybuf[0]);
1120 temp_probe->sock_addr.sin_family = AF_INET; 1100 GNUNET_assert (1 == inet_pton(AF_INET, &mybuf[0], &temp_probe->addr.ipv4_addr));
1121 GNUNET_assert(inet_pton(AF_INET, &mybuf[0], &temp_probe->sock_addr.sin_addr) == 1); 1101 temp_probe->addr.u_port = htons(port);
1122 temp_probe->port = port;
1123 temp_probe->next = plugin->probes; 1102 temp_probe->next = plugin->probes;
1124 temp_probe->plugin = plugin; 1103 temp_probe->plugin = plugin;
1125 temp_probe->task = GNUNET_SCHEDULER_add_delayed(plugin->env->sched, GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_MILLISECONDS, 500), &send_udp_probe_message, temp_probe); 1104 temp_probe->task = GNUNET_SCHEDULER_add_delayed(plugin->env->sched, GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_MILLISECONDS, 500), &send_udp_probe_message, temp_probe);
@@ -1158,16 +1137,28 @@ udp_demultiplexer(struct Plugin *plugin, struct GNUNET_PeerIdentity *sender,
1158 struct PeerSession *peer_session; 1137 struct PeerSession *peer_session;
1159 struct MessageQueue *pending_message; 1138 struct MessageQueue *pending_message;
1160 struct MessageQueue *pending_message_temp; 1139 struct MessageQueue *pending_message_temp;
1140 uint16_t incoming_port;
1161 1141
1162 if (memcmp(sender, plugin->env->my_identity, sizeof(struct GNUNET_PeerIdentity)) == 0) 1142 if (memcmp(sender, plugin->env->my_identity, sizeof(struct GNUNET_PeerIdentity)) == 0)
1163 { 1143 {
1164#if DEBUG_UDP_NAT 1144#if DEBUG_UDP
1165 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "udp", 1145 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "udp",
1166 _("Received a message from myself, dropping!!!\n")); 1146 _("Received a message from myself, dropping!!!\n"));
1167#endif 1147#endif
1168 return; 1148 return;
1169 } 1149 }
1170 1150
1151 incoming_port = 0;
1152 GNUNET_assert(sender_addr != NULL); /* Can recvfrom have a NULL address? */
1153 if (fromlen == sizeof(struct IPv4UdpAddress))
1154 {
1155 incoming_port = ntohs(((struct IPv4UdpAddress *)sender_addr)->u_port);
1156 }
1157 else if (fromlen == sizeof(struct IPv6UdpAddress))
1158 {
1159 incoming_port = ntohs(((struct IPv6UdpAddress *)sender_addr)->u6_port);
1160 }
1161
1171 switch (ntohs(currhdr->type)) 1162 switch (ntohs(currhdr->type))
1172 { 1163 {
1173 case GNUNET_MESSAGE_TYPE_TRANSPORT_UDP_NAT_PROBE: 1164 case GNUNET_MESSAGE_TYPE_TRANSPORT_UDP_NAT_PROBE:
@@ -1176,35 +1167,35 @@ udp_demultiplexer(struct Plugin *plugin, struct GNUNET_PeerIdentity *sender,
1176 outgoing_probe_reply->header.size = htons(sizeof(struct UDP_NAT_ProbeMessageReply)); 1167 outgoing_probe_reply->header.size = htons(sizeof(struct UDP_NAT_ProbeMessageReply));
1177 outgoing_probe_reply->header.type = htons(GNUNET_MESSAGE_TYPE_TRANSPORT_UDP_NAT_PROBE_REPLY); 1168 outgoing_probe_reply->header.type = htons(GNUNET_MESSAGE_TYPE_TRANSPORT_UDP_NAT_PROBE_REPLY);
1178 1169
1179#if DEBUG_UDP_NAT 1170#if DEBUG_UDP
1180 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "udp", 1171 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "udp",
1181 _("Received a probe on listen port %d, sent_from port %d\n"), sockinfo->port, ntohs(((struct sockaddr_in *)sender_addr)->sin_port)); 1172 _("Received a probe on listen port %d, sent_from port %d\n"), sockinfo->port, incoming_port);
1182#endif 1173#endif
1183 1174
1184 udp_real_send(plugin, sockinfo->desc, NULL, 1175 udp_real_send(plugin, sockinfo->desc, NULL,
1185 (char *)outgoing_probe_reply, 1176 (char *)outgoing_probe_reply,
1186 ntohs(outgoing_probe_reply->header.size), 0, 1177 ntohs(outgoing_probe_reply->header.size), 0,
1187 GNUNET_TIME_relative_get_unit(), 1178 GNUNET_TIME_relative_get_unit(),
1188 sender_addr, fromlen, 1179 sender_addr, fromlen,
1189 NULL, NULL); 1180 NULL, NULL);
1190 1181
1191#if DEBUG_UDP_NAT 1182#if DEBUG_UDP
1192 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "udp", 1183 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "udp",
1193 _("Sent PROBE REPLY to port %d on outgoing port %d\n"), ntohs(((struct sockaddr_in *)sender_addr)->sin_port), sockinfo->port); 1184 _("Sent PROBE REPLY to port %d on outgoing port %d\n"), incoming_port, sockinfo->port);
1194#endif 1185#endif
1195 GNUNET_free(outgoing_probe_reply); 1186 GNUNET_free(outgoing_probe_reply);
1196 break; 1187 break;
1197 case GNUNET_MESSAGE_TYPE_TRANSPORT_UDP_NAT_PROBE_REPLY: 1188 case GNUNET_MESSAGE_TYPE_TRANSPORT_UDP_NAT_PROBE_REPLY:
1198 /* Check for existing probe, check ports returned, send confirmation if all is well */ 1189 /* Check for existing probe, check ports returned, send confirmation if all is well */
1199#if DEBUG_UDP_NAT 1190#if DEBUG_UDP
1200 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "udp", 1191 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "udp",
1201 _("Received PROBE REPLY from port %d on incoming port %d\n"), ntohs(((struct sockaddr_in *)sender_addr)->sin_port), sockinfo->port); 1192 _("Received PROBE REPLY from port %d on incoming port %d\n"), incoming_port, sockinfo->port);
1202#endif 1193#endif
1203 if ((sender_addr != NULL) && (sizeof(sender_addr) == sizeof(struct IPv4UdpAddress))) 1194 if (sizeof(sender_addr) == sizeof(struct IPv4UdpAddress))
1204 { 1195 {
1205 memset(&addr_buf, 0, sizeof(addr_buf)); 1196 memset(&addr_buf, 0, sizeof(addr_buf));
1206 if (NULL == inet_ntop (AF_INET, 1197 if (NULL == inet_ntop (AF_INET,
1207 &((struct sockaddr_in *) sender_addr)->sin_addr, addr_buf, 1198 &((struct IPv4UdpAddress *) sender_addr)->ipv4_addr, addr_buf,
1208 INET_ADDRSTRLEN)) 1199 INET_ADDRSTRLEN))
1209 { 1200 {
1210 GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING, "inet_ntop"); 1201 GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING, "inet_ntop");
@@ -1213,7 +1204,7 @@ udp_demultiplexer(struct Plugin *plugin, struct GNUNET_PeerIdentity *sender,
1213 outgoing_probe = find_probe(plugin, &addr_buf[0]); 1204 outgoing_probe = find_probe(plugin, &addr_buf[0]);
1214 if (outgoing_probe != NULL) 1205 if (outgoing_probe != NULL)
1215 { 1206 {
1216#if DEBUG_UDP_NAT 1207#if DEBUG_UDP
1217 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "udp", 1208 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "udp",
1218 _("Sending confirmation that we were reached!\n")); 1209 _("Sending confirmation that we were reached!\n"));
1219#endif 1210#endif
@@ -1233,7 +1224,7 @@ udp_demultiplexer(struct Plugin *plugin, struct GNUNET_PeerIdentity *sender,
1233 } 1224 }
1234 else 1225 else
1235 { 1226 {
1236#if DEBUG_UDP_NAT 1227#if DEBUG_UDP
1237 GNUNET_log_from (GNUNET_ERROR_TYPE_INFO, "udp", 1228 GNUNET_log_from (GNUNET_ERROR_TYPE_INFO, "udp",
1238 _("Received a probe reply, but have no record of a sent probe!\n")); 1229 _("Received a probe reply, but have no record of a sent probe!\n"));
1239#endif 1230#endif
@@ -1242,13 +1233,13 @@ udp_demultiplexer(struct Plugin *plugin, struct GNUNET_PeerIdentity *sender,
1242 break; 1233 break;
1243 case GNUNET_MESSAGE_TYPE_TRANSPORT_UDP_NAT_PROBE_CONFIRM: 1234 case GNUNET_MESSAGE_TYPE_TRANSPORT_UDP_NAT_PROBE_CONFIRM:
1244 peer_session = find_session(plugin, sender); 1235 peer_session = find_session(plugin, sender);
1245#if DEBUG_UDP_NAT 1236#if DEBUG_UDP
1246 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "udp", 1237 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "udp",
1247 _("Looking up peer session for peer %s\n"), GNUNET_i2s(sender)); 1238 _("Looking up peer session for peer %s\n"), GNUNET_i2s(sender));
1248#endif 1239#endif
1249 if (peer_session == NULL) /* Shouldn't this NOT happen? */ 1240 if (peer_session == NULL) /* Shouldn't this NOT happen? */
1250 { 1241 {
1251#if DEBUG_UDP_NAT 1242#if DEBUG_UDP
1252 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "udp", 1243 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "udp",
1253 _("Peer not in list, adding (THIS MAY BE A MISTAKE) %s\n"), GNUNET_i2s(sender)); 1244 _("Peer not in list, adding (THIS MAY BE A MISTAKE) %s\n"), GNUNET_i2s(sender));
1254#endif 1245#endif
@@ -1270,14 +1261,22 @@ udp_demultiplexer(struct Plugin *plugin, struct GNUNET_PeerIdentity *sender,
1270 { 1261 {
1271 peer_session->expecting_welcome = GNUNET_NO; 1262 peer_session->expecting_welcome = GNUNET_NO;
1272 peer_session->sock = sockinfo->desc; 1263 peer_session->sock = sockinfo->desc;
1273 ((struct sockaddr_in *)peer_session->connect_addr)->sin_port = ((struct sockaddr_in *) sender_addr)->sin_port; 1264 if (peer_session->connect_alen == sizeof(struct IPv4UdpAddress))
1274#if DEBUG_UDP_NAT 1265 {
1266 ((struct IPv4UdpAddress *)peer_session->connect_addr)->u_port = htons(incoming_port);
1267 }
1268 else if (peer_session->connect_alen == sizeof(struct IPv4UdpAddress))
1269 {
1270 ((struct IPv6UdpAddress *)peer_session->connect_addr)->u6_port = htons(incoming_port);
1271 }
1272
1273#if DEBUG_UDP
1275 GNUNET_log_from (GNUNET_ERROR_TYPE_INFO, "udp", 1274 GNUNET_log_from (GNUNET_ERROR_TYPE_INFO, "udp",
1276 _("Received a probe confirmation, will send to peer on port %d\n"), ntohs(((struct sockaddr_in *)peer_session->connect_addr)->sin_port)); 1275 _("Received a probe confirmation, will send to peer on port %d\n"), incoming_port);
1277#endif 1276#endif
1278 if (peer_session->messages != NULL) 1277 if (peer_session->messages != NULL)
1279 { 1278 {
1280#if DEBUG_UDP_NAT 1279#if DEBUG_UDP
1281 GNUNET_log_from (GNUNET_ERROR_TYPE_INFO, "udp", 1280 GNUNET_log_from (GNUNET_ERROR_TYPE_INFO, "udp",
1282 _("Received a probe confirmation, sending queued messages.\n")); 1281 _("Received a probe confirmation, sending queued messages.\n"));
1283#endif 1282#endif
@@ -1285,16 +1284,26 @@ udp_demultiplexer(struct Plugin *plugin, struct GNUNET_PeerIdentity *sender,
1285 int count = 0; 1284 int count = 0;
1286 while (pending_message != NULL) 1285 while (pending_message != NULL)
1287 { 1286 {
1288#if DEBUG_UDP_NAT 1287#if DEBUG_UDP
1289 GNUNET_log_from (GNUNET_ERROR_TYPE_INFO, "udp", 1288 GNUNET_log_from (GNUNET_ERROR_TYPE_INFO, "udp",
1290 _("sending queued message %d\n"), count); 1289 _("sending queued message %d\n"), count);
1291#endif 1290#endif
1292 udp_real_send(plugin, peer_session->sock, &peer_session->target, pending_message->msgbuf, pending_message->msgbuf_size, 0, GNUNET_TIME_relative_get_unit(), peer_session->connect_addr, peer_session->connect_alen, pending_message->cont, pending_message->cont_cls); 1291 udp_real_send(plugin,
1292 peer_session->sock,
1293 &peer_session->target,
1294 pending_message->msgbuf,
1295 pending_message->msgbuf_size, 0,
1296 GNUNET_TIME_relative_get_unit(),
1297 peer_session->connect_addr,
1298 peer_session->connect_alen,
1299 pending_message->cont,
1300 pending_message->cont_cls);
1301
1293 pending_message_temp = pending_message; 1302 pending_message_temp = pending_message;
1294 pending_message = pending_message->next; 1303 pending_message = pending_message->next;
1295 GNUNET_free(pending_message_temp->msgbuf); 1304 GNUNET_free(pending_message_temp->msgbuf);
1296 GNUNET_free(pending_message_temp); 1305 GNUNET_free(pending_message_temp);
1297#if DEBUG_UDP_NAT 1306#if DEBUG_UDP
1298 GNUNET_log_from (GNUNET_ERROR_TYPE_INFO, "udp", 1307 GNUNET_log_from (GNUNET_ERROR_TYPE_INFO, "udp",
1299 _("finished sending queued message %d\n"), count); 1308 _("finished sending queued message %d\n"), count);
1300#endif 1309#endif
@@ -1305,7 +1314,7 @@ udp_demultiplexer(struct Plugin *plugin, struct GNUNET_PeerIdentity *sender,
1305 } 1314 }
1306 else 1315 else
1307 { 1316 {
1308#if DEBUG_UDP_NAT 1317#if DEBUG_UDP
1309 GNUNET_log_from (GNUNET_ERROR_TYPE_INFO, "udp", 1318 GNUNET_log_from (GNUNET_ERROR_TYPE_INFO, "udp",
1310 _("Received probe confirmation for already confirmed peer!\n")); 1319 _("Received probe confirmation for already confirmed peer!\n"));
1311#endif 1320#endif
@@ -1317,6 +1326,10 @@ udp_demultiplexer(struct Plugin *plugin, struct GNUNET_PeerIdentity *sender,
1317 /* If we receive these just ignore! */ 1326 /* If we receive these just ignore! */
1318 break; 1327 break;
1319 default: 1328 default:
1329#if DEBUG_UDP
1330 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1331 _("Sending message type %d to transport\n!"), ntohs(currhdr->type));
1332#endif
1320 plugin->env->receive (plugin->env->cls, sender, currhdr, UDP_DIRECT_DISTANCE, 1333 plugin->env->receive (plugin->env->cls, sender, currhdr, UDP_DIRECT_DISTANCE,
1321 NULL, sender_addr, fromlen); 1334 NULL, sender_addr, fromlen);
1322 } 1335 }
@@ -1377,7 +1390,7 @@ udp_plugin_select (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
1377 GNUNET_NETWORK_socket_recvfrom (udp_sock.desc, buf, buflen, 1390 GNUNET_NETWORK_socket_recvfrom (udp_sock.desc, buf, buflen,
1378 (struct sockaddr *)&addr, &fromlen); 1391 (struct sockaddr *)&addr, &fromlen);
1379 1392
1380 if (fromlen == sizeof (struct sockaddr_in)) 1393 if (AF_INET == ((struct sockaddr *)addr)->sa_family)
1381 { 1394 {
1382 s4 = (const struct sockaddr_in*) &addr; 1395 s4 = (const struct sockaddr_in*) &addr;
1383 t4.u_port = s4->sin_port; 1396 t4.u_port = s4->sin_port;
@@ -1385,7 +1398,7 @@ udp_plugin_select (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
1385 ca = &t4; 1398 ca = &t4;
1386 calen = sizeof (t4); 1399 calen = sizeof (t4);
1387 } 1400 }
1388 else if (fromlen == sizeof (struct sockaddr_in6)) 1401 else if (AF_INET6 == ((struct sockaddr *)addr)->sa_family)
1389 { 1402 {
1390 s6 = (const struct sockaddr_in6*) &addr; 1403 s6 = (const struct sockaddr_in6*) &addr;
1391 t6.u6_port = s6->sin6_port; 1404 t6.u6_port = s6->sin6_port;
@@ -1402,12 +1415,6 @@ udp_plugin_select (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
1402 calen = 0; 1415 calen = 0;
1403 } 1416 }
1404 1417
1405#if DEBUG_UDP_NAT
1406 GNUNET_log_from (GNUNET_ERROR_TYPE_INFO, "udp", _
1407 ("socket_recv returned %u, src_addr_len is %u\n"), ret,
1408 fromlen);
1409#endif
1410
1411 if (ret <= 0) 1418 if (ret <= 0)
1412 { 1419 {
1413 GNUNET_free (buf); 1420 GNUNET_free (buf);
@@ -1415,11 +1422,6 @@ udp_plugin_select (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
1415 } 1422 }
1416 msg = (struct UDPMessage *) buf; 1423 msg = (struct UDPMessage *) buf;
1417 1424
1418#if DEBUG_UDP_NAT
1419 GNUNET_log_from (GNUNET_ERROR_TYPE_INFO, "udp", _
1420 ("header reports message size of %d, type %d\n"),
1421 ntohs (msg->header.size), ntohs (msg->header.type));
1422#endif
1423 if (ntohs (msg->header.size) < sizeof (struct UDPMessage)) 1425 if (ntohs (msg->header.size) < sizeof (struct UDPMessage))
1424 { 1426 {
1425 GNUNET_free (buf); 1427 GNUNET_free (buf);
@@ -1437,17 +1439,7 @@ udp_plugin_select (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
1437 while (offset < tsize) 1439 while (offset < tsize)
1438 { 1440 {
1439 currhdr = (struct GNUNET_MessageHeader *)&msgbuf[offset]; 1441 currhdr = (struct GNUNET_MessageHeader *)&msgbuf[offset];
1440#if DEBUG_UDP_NAT
1441 GNUNET_log_from (GNUNET_ERROR_TYPE_INFO, "udp", _
1442 ("processing msg %d: type %d, size %d at offset %d\n"),
1443 count, ntohs(currhdr->type), ntohs(currhdr->size), offset);
1444#endif
1445 udp_demultiplexer(plugin, sender, currhdr, ca, calen, &udp_sock); 1442 udp_demultiplexer(plugin, sender, currhdr, ca, calen, &udp_sock);
1446#if DEBUG_UDP_NAT
1447 GNUNET_log_from (GNUNET_ERROR_TYPE_INFO, "udp", _
1448 ("processing done msg %d: type %d, size %d at offset %d\n"),
1449 count, ntohs(currhdr->type), ntohs(currhdr->size), offset);
1450#endif
1451 offset += ntohs(currhdr->size); 1443 offset += ntohs(currhdr->size);
1452 count++; 1444 count++;
1453 } 1445 }
@@ -1490,7 +1482,7 @@ udp_transport_server_start (void *cls)
1490 plugin->server_stdout = GNUNET_DISK_pipe(GNUNET_YES); 1482 plugin->server_stdout = GNUNET_DISK_pipe(GNUNET_YES);
1491 if (plugin->server_stdout == NULL) 1483 if (plugin->server_stdout == NULL)
1492 return sockets_created; 1484 return sockets_created;
1493#if DEBUG_UDP_NAT 1485#if DEBUG_UDP
1494 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, 1486 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG,
1495 "udp", 1487 "udp",
1496 "Starting gnunet-nat-server process cmd: %s %s\n", "gnunet-nat-server", plugin->internal_address); 1488 "Starting gnunet-nat-server process cmd: %s %s\n", "gnunet-nat-server", plugin->internal_address);
@@ -1499,7 +1491,7 @@ udp_transport_server_start (void *cls)
1499 plugin->server_pid = GNUNET_OS_start_process(NULL, plugin->server_stdout, "gnunet-nat-server", "gnunet-nat-server", plugin->internal_address, NULL); 1491 plugin->server_pid = GNUNET_OS_start_process(NULL, plugin->server_stdout, "gnunet-nat-server", "gnunet-nat-server", plugin->internal_address, NULL);
1500 if (plugin->server_pid == GNUNET_SYSERR) 1492 if (plugin->server_pid == GNUNET_SYSERR)
1501 { 1493 {
1502#if DEBUG_UDP_NAT 1494#if DEBUG_UDP
1503 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, 1495 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG,
1504 "udp", 1496 "udp",
1505 "Failed to start gnunet-nat-server process\n"); 1497 "Failed to start gnunet-nat-server process\n");
@@ -1536,7 +1528,7 @@ udp_transport_server_start (void *cls)
1536 serverAddrv4.sin_port = htons (plugin->port); 1528 serverAddrv4.sin_port = htons (plugin->port);
1537 addrlen = sizeof (serverAddrv4); 1529 addrlen = sizeof (serverAddrv4);
1538 serverAddr = (struct sockaddr *) &serverAddrv4; 1530 serverAddr = (struct sockaddr *) &serverAddrv4;
1539#if DEBUG_UDP_NAT 1531#if DEBUG_UDP
1540 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, 1532 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG,
1541 "udp", 1533 "udp",
1542 "Binding to port %d\n", ntohs(serverAddrv4.sin_port)); 1534 "Binding to port %d\n", ntohs(serverAddrv4.sin_port));
@@ -1545,7 +1537,7 @@ udp_transport_server_start (void *cls)
1545 GNUNET_OK) 1537 GNUNET_OK)
1546 { 1538 {
1547 serverAddrv4.sin_port = htons (GNUNET_CRYPTO_random_u32(GNUNET_CRYPTO_QUALITY_STRONG, 33537) + 32000); /* Find a good, non-root port */ 1539 serverAddrv4.sin_port = htons (GNUNET_CRYPTO_random_u32(GNUNET_CRYPTO_QUALITY_STRONG, 33537) + 32000); /* Find a good, non-root port */
1548#if DEBUG_UDP_NAT 1540#if DEBUG_UDP
1549 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, 1541 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG,
1550 "udp", 1542 "udp",
1551 "Binding failed, trying new port %d\n", ntohs(serverAddrv4.sin_port)); 1543 "Binding failed, trying new port %d\n", ntohs(serverAddrv4.sin_port));
@@ -1635,7 +1627,7 @@ udp_check_address (void *cls, void *addr, size_t addrlen)
1635 v6->sin6_port = htons (plugin->port); 1627 v6->sin6_port = htons (plugin->port);
1636 } 1628 }
1637 1629
1638#if DEBUG_UDP_NAT 1630#if DEBUG_UDP
1639 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, 1631 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG,
1640 "udp", 1632 "udp",
1641 "Informing transport service about my address `%s'.\n", 1633 "Informing transport service about my address `%s'.\n",