49  * A REQUEST packet is always sent to the well known UDP port 137.
52  * initialization time.  In rare cases, a request packet will be sent to
55  * A RESPONSE packet is always sent to the source UDP port and source IP
56  * address of the request packet.
58  * A DEMAND packet must always be sent to the well known UDP port 137.
130 	struct name_packet	*packet;
156     struct name_packet *packet);
187 	struct name_packet	packet;
191 	 * The response packet has in it the address of the presumed owner
197 	if ((answer = reply_info->packet->answer) == 0)
203 	packet.info = NAME_QUERY_REQUEST | NM_FLAGS_UNICAST;
204 	packet.qdcount = 1;	/* question entries */
205 	packet.question = &question;
206 	packet.ancount = 0;	/* answer recs */
207 	packet.answer = NULL;
208 	packet.nscount = 0;	/* authority recs */
209 	packet.authority = NULL;
210 	packet.arcount = 0;	/* additional recs */
211 	packet.additional = NULL;
216 		packet.name_trn_id = tid;
217 		if (smb_send_name_service_packet(addr, &packet) >= 0) {
219 			    &packet, UCAST_REQ_RETRY_TIMEOUT)) != 0)
260 				info = reply->packet->info;
262 					answer = reply->packet->answer;
267 					free(reply->packet);
295 smb_reply_ready(struct name_packet *packet, addr_entry_t *addr)
303 		if (reply->name_trn_id == packet->name_trn_id) {
307 			reply->packet = packet;
319 	answer = packet->answer;
322 	free(packet);
327     struct name_packet *packet, uint32_t timeout)
341 	info = reply->packet->info;
342 	answer = reply->packet->answer;
413 		question = packet->question;
436 		 * The response packet has in it the
455 	free(reply->packet);
475  *	>0	-> Encode successful, value is length of packet in "buf"
665  * Returns a pointer to a name packet on success.  Otherwise, returns
685 		syslog(LOG_DEBUG, "nbns: short packet (%d bytes)", n_buf);
888  *	Send out a name service packet to proper destination.
892  *	struct name_packet *packet	-> Packet to send
899 smb_send_name_service_packet(addr_entry_t *addr, struct name_packet *packet)
904 	if ((len = smb_name_buf_from_packet(buf, sizeof (buf), packet)) < 0) {
916  * This function sends the given NetBIOS packet to the given
926     struct name_packet *packet, uint32_t retries, uint32_t timeout)
938 		packet->name_trn_id = tid;
939 		if (smb_send_name_service_packet(destination, packet) >= 0) {
941 			    packet, timeout);
969 	struct name_packet packet;
989 		packet.info = NAME_REGISTRATION_REQUEST | NM_FLAGS_BROADCAST;
997 		packet.info = NAME_REGISTRATION_REQUEST | NM_FLAGS_UNICAST;
1000 	packet.qdcount = 1;	/* question entries */
1001 	packet.question = question;
1002 	packet.ancount = 0;	/* answer recs */
1003 	packet.answer = NULL;
1004 	packet.nscount = 0;	/* authority recs */
1005 	packet.authority = NULL;
1006 	packet.arcount = 1;	/* additional recs */
1007 	packet.additional = additional;
1011 		packet.info |= NAME_MULTIHOME_REGISTRATION_REQUEST;
1021 		rc = smb_netbios_send_rcv(bcast, &destination[i], &packet,
1044 	struct name_packet packet;
1063 		packet.info = NAME_REFRESH_REQUEST | NM_FLAGS_BROADCAST;
1073 		packet.info = NAME_REFRESH_REQUEST | NM_FLAGS_UNICAST;
1087 		packet.info = NAME_REFRESH_REQUEST | NM_FLAGS_UNICAST;
1094 		packet.info |= NAME_MULTIHOME_REGISTRATION_REQUEST;
1096 	packet.qdcount = 1;	/* question entries */
1097 	packet.question = question;
1098 	packet.ancount = 0;	/* answer recs */
1099 	packet.answer = NULL;
1100 	packet.nscount = 0;	/* authority recs */
1101 	packet.authority = NULL;
1102 	packet.arcount = 1;	/* additional recs */
1103 	packet.additional = additional;
1109 		rc = smb_netbios_send_rcv(bcast, &destination[i], &packet,
1120 		rc = smb_netbios_send_rcv(bcast, addr, &packet,
1138 	struct name_packet	packet;
1141 	bzero(&packet, sizeof (struct name_packet));
1144 	packet.name_trn_id = original_packet->name_trn_id;
1145 	packet.info = NAME_REGISTRATION_RESPONSE | NAME_NM_FLAGS_RA |
1147 	packet.qdcount = 0;	/* question entries */
1148 	packet.question = NULL;
1149 	packet.ancount = 1;	/* answer recs */
1150 	packet.answer = &answer;
1151 	packet.nscount = 0;	/* authority recs */
1152 	packet.authority = NULL;
1153 	packet.arcount = 0;	/* additional recs */
1154 	packet.additional = NULL;
1163 	return (smb_send_name_service_packet(addr, &packet));
1179 	struct name_packet packet;
1188 		packet.info = NAME_RELEASE_REQUEST | NM_FLAGS_BROADCAST;
1196 		packet.info = NAME_RELEASE_REQUEST | NM_FLAGS_UNICAST;
1199 	packet.qdcount = 1;	/* question entries */
1200 	packet.question = question;
1201 	packet.ancount = 0;	/* answer recs */
1202 	packet.answer = NULL;
1203 	packet.nscount = 0;	/* authority recs */
1204 	packet.authority = NULL;
1205 	packet.arcount = 1;	/* additional recs */
1206 	packet.additional = additional;
1209 		rc = smb_netbios_send_rcv(bcast, &destination[i], &packet,
1227 	struct name_packet	packet;
1230 	bzero(&packet, sizeof (struct name_packet));
1233 	packet.name_trn_id = original_packet->name_trn_id;
1234 	packet.info = NAME_RELEASE_RESPONSE | (rcode & NAME_RCODE_MASK);
1235 	packet.qdcount = 0;	/* question entries */
1236 	packet.question = NULL;
1237 	packet.ancount = 1;	/* answer recs */
1238 	packet.answer = &answer;
1239 	packet.nscount = 0;	/* authority recs */
1240 	packet.authority = NULL;
1241 	packet.arcount = 0;	/* additional recs */
1242 	packet.additional = NULL;
1251 	return (smb_send_name_service_packet(addr, &packet));
1265 	struct name_packet	packet;
1276 		packet.info = NAME_QUERY_REQUEST | NM_FLAGS_BROADCAST;
1284 		packet.info = NAME_QUERY_REQUEST | NM_FLAGS_UNICAST;
1286 	packet.qdcount = 1;	/* question entries */
1287 	packet.question = question;
1288 	packet.ancount = 0;	/* answer recs */
1289 	packet.answer = NULL;
1290 	packet.nscount = 0;	/* authority recs */
1291 	packet.authority = NULL;
1292 	packet.arcount = 0;	/* additional recs */
1293 	packet.additional = NULL;
1300 			packet.name_trn_id = tid;
1303 			    &packet) >= 0) {
1306 				    &packet, timeout)) != 0)
1328 	struct name_packet	packet;
1335 	packet.name_trn_id = original_packet->name_trn_id;
1336 	packet.info = NAME_QUERY_RESPONSE | (rcode & NAME_RCODE_MASK);
1337 	packet.qdcount = 0;	/* question entries */
1338 	packet.question = NULL;
1339 	packet.ancount = 1;	/* answer recs */
1340 	packet.answer = &answer;
1341 	packet.nscount = 0;	/* authority recs */
1342 	packet.authority = NULL;
1343 	packet.arcount = 0;	/* additional recs */
1344 	packet.additional = NULL;
1375 	return (smb_send_name_service_packet(addr, &packet));
1388 	struct name_packet	packet;
1396 	bzero(&packet, sizeof (struct name_packet));
1399 	packet.name_trn_id = original_packet->name_trn_id;
1400 	packet.info = NODE_STATUS_RESPONSE;
1401 	packet.qdcount = 0;	/* question entries */
1402 	packet.question = NULL;
1403 	packet.ancount = 1;	/* answer recs */
1404 	packet.answer = &answer;
1405 	packet.nscount = 0;	/* authority recs */
1406 	packet.authority = NULL;
1407 	packet.arcount = 0;	/* additional recs */
1408 	packet.additional = NULL;
1432 			packet.info |= NAME_NM_FLAGS_TC;
1457 			packet.info |= NAME_NM_FLAGS_TC;
1464 			packet.info |= NAME_NM_FLAGS_TC;
1470 			packet.info |= NAME_NM_FLAGS_TC;
1476 			packet.info |= NAME_NM_FLAGS_TC;
1482 			packet.info |= NAME_NM_FLAGS_TC;
1488 			packet.info |= NAME_NM_FLAGS_TC;
1494 			packet.info |= NAME_NM_FLAGS_TC;
1500 			packet.info |= NAME_NM_FLAGS_TC;
1506 			packet.info |= NAME_NM_FLAGS_TC;
1512 			packet.info |= NAME_NM_FLAGS_TC;
1521 	return (smb_send_name_service_packet(addr, &packet));
1537 		/* build name service packet */
1591 	/* build packet */
1632 	/* build packet */
1672 	/* build packet */
1728 	/* build packet */
1832 smb_name_process_Bnode_packet(struct name_packet *packet, addr_entry_t *addr)
1839 	question = packet->question;
1840 	additional = packet->additional;
1842 	switch (packet->info & NAME_OPCODE_OPCODE_MASK) {
1879 				    packet, entry, 0);
1898 				 * field in the request packet
1901 				    packet);
1912 smb_name_process_Pnode_packet(struct name_packet *packet, addr_entry_t *addr)
1919 	question = packet->question;
1920 	additional = packet->additional;
1922 	if (packet->info & NAME_NM_FLAGS_B) {
1929 	switch (packet->info & NAME_OPCODE_OPCODE_MASK) {
1950 		(void) smb_send_name_registration_response(addr, packet, 0);
1972 				    packet, entry, 0);
1979 				    packet, name, RCODE_NAM_ERR);
1995 				 * field in the request packet
2000 				    packet);
2011 smb_name_process_Mnode_packet(struct name_packet *packet, addr_entry_t *addr)
2013 	if (packet->info & NAME_NM_FLAGS_B)
2014 		smb_name_process_Bnode_packet(packet, addr);
2016 		smb_name_process_Pnode_packet(packet, addr);
2020 smb_name_process_Hnode_packet(struct name_packet *packet, addr_entry_t *addr)
2022 	if (packet->info & NAME_NM_FLAGS_B)
2023 		smb_name_process_Bnode_packet(packet, addr);
2025 		smb_name_process_Pnode_packet(packet, addr);
2187 	struct name_packet *packet;
2189 	if ((packet = smb_name_buf_to_packet(p->buf, p->length)) != NULL) {
2190 		if (packet->info & NAME_OPCODE_R) {
2191 			/* Reply packet */
2192 			smb_reply_ready(packet, addr);
2198 		/* Request packet */
2201 			smb_name_process_Bnode_packet(packet, addr);
2204 			smb_name_process_Pnode_packet(packet, addr);
2207 			smb_name_process_Mnode_packet(packet, addr);
2211 			smb_name_process_Hnode_packet(packet, addr);
2215 		if (packet->answer)
2216 			smb_netbios_name_freeaddrs(packet->answer->name);
2217 		free(packet);
2219 		syslog(LOG_ERR, "nbns: packet decode failed");
2462 		 * Launch a netbios worker to process the received packet.

Indexes created Tue Jul 24 14:28:13 CEST 2018