2 * Copyright (c) 1999, Boris Popov
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of the author nor the names of any co-contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 #include <sys/cdefs.h>
31 __FBSDID("$FreeBSD$");
35 #include <sys/types.h>
36 #include <sys/socket.h>
38 #include <arpa/inet.h>
39 #include <netipx/ipx.h>
45 * TODO: These should go to ipx headers
47 #define ipx_set_net(x,y) ((x).x_net.s_net[0] = (y).x_net.s_net[0]); \
48 ((x).x_net.s_net[1]=(y).x_net.s_net[1])
49 #define ipx_set_nullnet(x) ((x).x_net.s_net[0]=0); ((x).x_net.s_net[1]=0)
50 #define ipx_set_nullhost(x) ((x).x_host.s_host[0] = 0); \
51 ((x).x_host.s_host[1] = 0); ((x).x_host.s_host[2] = 0)
52 #define ipx_set_wildnet(x) ((x).x_net.s_net[0] = 0xFFFF); \
53 ((x).x_net.s_net[1]=0xFFFF)
54 #define ipx_set_wildhost(x) ((x).x_host.s_host[0] = 0xFFFF); \
55 ((x).x_host.s_host[1] = 0xFFFF); ((x).x_host.s_host[2] = 0xFFFF);
58 static struct sap_packet* sap_packet_alloc(int entries);
59 static int sap_size(int entries, u_short operation);
60 int (*sap_sendto_func)(void*,int,struct sockaddr_ipx*,int sock)=NULL;
63 sap_sendto(void* buffer, int size, struct sockaddr_ipx* daddr, int sock)
66 return sap_sendto_func(buffer,size,daddr,sock);
67 return sendto(sock, (char*)buffer, size, 0,
68 (struct sockaddr*)daddr, sizeof(*daddr));
71 static struct sap_packet*
72 sap_packet_alloc(int entries)
74 if (entries > IPX_SAP_MAX_ENTRIES)
77 (struct sap_packet*)malloc(sap_size(entries, IPX_SAP_GENERAL_RESPONSE));
81 sap_size(int entries, u_short operation)
86 case IPX_SAP_GENERAL_QUERY:
87 return entries == 1 ? IPX_SAP_REQUEST_LEN : 0;
88 case IPX_SAP_GENERAL_RESPONSE:
89 if (entries > IPX_SAP_MAX_ENTRIES)
91 return sizeof(struct sap_packet) + (entries - 1) * sizeof(struct sap_entry);
92 case IPX_SAP_NEAREST_QUERY:
93 return entries == 1 ? IPX_SAP_REQUEST_LEN : 0;
94 case IPX_SAP_NEAREST_RESPONSE:
95 return entries == 1 ? sizeof(struct sap_packet) : 0;
102 sap_copyname(char *dest, const char *src)
104 bzero(dest, IPX_SAP_SERVER_NAME_LEN);
105 strncpy(dest, src, IPX_SAP_SERVER_NAME_LEN - 1);
109 sap_rq_init(struct sap_rq* rq, int sock)
111 rq->buffer = sap_packet_alloc(IPX_SAP_MAX_ENTRIES);
112 if (rq->buffer == NULL)
115 rq->buffer->operation = htons(IPX_SAP_GENERAL_QUERY);
116 rq->dest_addr.sipx_family = AF_IPX;
117 rq->dest_addr.sipx_len = sizeof(struct sockaddr_ipx);
123 sap_rq_flush(struct sap_rq* rq)
127 if (rq->entries == 0)
129 result = sap_sendto(rq->buffer,
130 sap_size(rq->entries, ntohs(rq->buffer->operation)),
131 &rq->dest_addr, rq->sock);
137 sap_rq_general_query(struct sap_rq* rq, u_short ser_type)
139 struct sap_entry* sep;
142 rq->buffer->operation = htons(IPX_SAP_GENERAL_QUERY);
143 sep = rq->buffer->sap_entries + rq->entries++;
144 sep->server_type = htons(ser_type);
148 sap_rq_gns_request(struct sap_rq* rq, u_short ser_type)
150 struct sap_entry* sep;
153 rq->buffer->operation = htons(IPX_SAP_NEAREST_QUERY);
154 sep = rq->buffer->sap_entries + rq->entries++;
155 sep->server_type = htons(ser_type);
159 sap_rq_general_response(struct sap_rq* rq,u_short type,char *name,struct sockaddr_ipx* addr, u_short hops,int down_allow)
161 struct sap_entry* sep;
163 if (hops >= IPX_SAP_SERVER_DOWN && !down_allow) return;
164 if (rq->entries >= IPX_SAP_MAX_ENTRIES)
166 if (rq->buffer->operation != htons(IPX_SAP_GENERAL_RESPONSE)){
168 rq->buffer->operation = htons(IPX_SAP_GENERAL_RESPONSE);
170 sep = rq->buffer->sap_entries + rq->entries;
171 sep->server_type = htons(type);
172 sap_copyname(sep->server_name, name);
173 memcpy(&sep->ipx, &addr->sipx_addr, sizeof(struct ipx_addr));
174 sep->hops = htons(hops);
179 sap_rq_gns_response(struct sap_rq* rq,u_short type,char *name,struct sockaddr_ipx* addr,u_short hops)
181 struct sap_entry* sep;
183 if (hops >= IPX_SAP_SERVER_DOWN) return;
185 rq->buffer->operation = htons(IPX_SAP_NEAREST_RESPONSE);
186 sep = rq->buffer->sap_entries + rq->entries;
187 sep->server_type = htons(type);
188 sap_copyname(sep->server_name, name);
189 memcpy(&sep->ipx, &addr->sipx_addr, sizeof(struct ipx_addr));
190 sep->hops = htons(hops);
195 sap_rq_set_destination(struct sap_rq* rq,struct ipx_addr *dest)
198 memcpy(&rq->dest_addr.sipx_addr,dest,sizeof(struct ipx_addr));
202 sap_getsock(int *rsock) {
203 struct sockaddr_ipx sap_addr;
206 sock = socket(AF_IPX, SOCK_DGRAM, 0);
209 slen = sizeof(sap_addr);
210 bzero(&sap_addr, slen);
211 sap_addr.sipx_family = AF_IPX;
212 sap_addr.sipx_len = slen;
213 if (bind(sock, (struct sockaddr*)&sap_addr, slen) == -1) {
218 if (setsockopt(sock, SOL_SOCKET, SO_BROADCAST, &opt, sizeof(opt)) != 0){
227 sap_recv(int sock,void *buf,int len,int flags, int timeout){
240 if ((result = select(sock + 1, &rd, &wr, &ex, &tv)) == -1) {
243 if (FD_ISSET(sock, &rd)) {
244 result = recv(sock, buf, len, flags);
253 sap_find_nearest(int server_type, struct sockaddr_ipx *daddr, char *server_name)
255 struct ipx_addr addr;
257 int sock, error, packets, len;
258 struct sap_packet *reply = (struct sap_packet*)&data;
259 struct sap_rq sap_rq;
261 error = sap_getsock(&sock);
264 bzero(&addr, sizeof(addr));
265 /* BAD: we should enum all ifs (and nets ?) */
266 if (ipx_iffind(NULL, &addr) != 0) {
267 return (EPROTONOSUPPORT);
269 ipx_set_wildhost(addr);
270 addr.x_port = htons(IPXPORT_SAP);
272 if (!sap_rq_init(&sap_rq, sock)) {
276 sap_rq_set_destination(&sap_rq, &addr);
277 sap_rq_gns_request(&sap_rq, server_type);
278 sap_rq_flush(&sap_rq);
281 len = sap_recv(sock, data, sizeof(data), 0, 1);
283 ntohs(reply->operation) == IPX_SAP_NEAREST_RESPONSE)
287 } while (packets > 0);
294 daddr->sipx_addr = reply->sap_entries[0].ipx;
295 daddr->sipx_family = AF_IPX;
296 daddr->sipx_len = sizeof(struct sockaddr_ipx);
297 sap_copyname(server_name, reply->sap_entries[0].server_name);