2 * Copyright (c) 1997 Brian Somers <brian@Awfulhak.org>
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.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 #include <sys/param.h>
31 #include <sys/socket.h>
32 #include <netinet/in.h>
43 #include "descriptor.h"
50 server_UpdateSet(struct fdescriptor *d, fd_set *r, fd_set *w, fd_set *e, int *n)
52 struct server *s = descriptor2server(d);
57 if (r && s->fd >= 0) {
61 log_Printf(LogTIMER, "server: fdset(r) %d\n", s->fd);
65 for (p = log_PromptList(); p; p = p->next)
66 sets += descriptor_UpdateSet(&p->desc, r, w, e, n);
72 server_IsSet(struct fdescriptor *d, const fd_set *fdset)
74 struct server *s = descriptor2server(d);
77 if (s->fd >= 0 && FD_ISSET(s->fd, fdset))
80 for (p = log_PromptList(); p; p = p->next)
81 if (descriptor_IsSet(&p->desc, fdset))
88 server_Read(struct fdescriptor *d, struct bundle *bundle, const fd_set *fdset)
90 struct server *s = descriptor2server(d);
91 struct sockaddr_storage ss;
92 struct sockaddr *sa = (struct sockaddr *)&ss;
93 struct sockaddr_in *sin = (struct sockaddr_in *)&ss;
95 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)&ss;
97 int ssize = sizeof ss, wfd;
101 if (s->fd >= 0 && FD_ISSET(s->fd, fdset)) {
102 wfd = accept(s->fd, sa, &ssize);
104 log_Printf(LogERROR, "server_Read: accept(): %s\n", strerror(errno));
105 else if (sa->sa_len == 0) {
113 switch (sa->sa_family) {
115 log_Printf(LogPHASE, "Connected to local client.\n");
119 ncpaddr_setsa(&addr, sa);
120 if (ntohs(sin->sin_port) < 1024) {
121 log_Printf(LogALERT, "Rejected client connection from %s:%u"
122 "(invalid port number) !\n",
123 ncpaddr_ntoa(&addr), ntohs(sin->sin_port));
128 log_Printf(LogPHASE, "Connected to client from %s:%u\n",
129 ncpaddr_ntoa(&addr), ntohs(sin->sin_port));
134 ncpaddr_setsa(&addr, sa);
135 if (ntohs(sin6->sin6_port) < 1024) {
136 log_Printf(LogALERT, "Rejected client connection from %s:%u"
137 "(invalid port number) !\n",
138 ncpaddr_ntoa(&addr), ntohs(sin6->sin6_port));
143 log_Printf(LogPHASE, "Connected to client from %s:%u\n",
144 ncpaddr_ntoa(&addr), ntohs(sin6->sin6_port));
149 write(wfd, "Unrecognised access !\n", 22);
156 if ((p = prompt_Create(s, bundle, wfd)) == NULL) {
157 write(wfd, "Connection refused.\n", 20);
160 switch (sa->sa_family) {
162 p->src.type = "local";
163 strncpy(p->src.from, s->cfg.sockname, sizeof p->src.from - 1);
164 p->src.from[sizeof p->src.from - 1] = '\0';
168 snprintf(p->src.from, sizeof p->src.from, "%s:%u",
169 ncpaddr_ntoa(&addr), ntohs(sin->sin_port));
174 snprintf(p->src.from, sizeof p->src.from, "%s:%u",
175 ncpaddr_ntoa(&addr), ntohs(sin6->sin6_port));
179 prompt_TtyCommandMode(p);
184 log_PromptListChanged = 0;
185 for (p = log_PromptList(); p; p = p->next)
186 if (descriptor_IsSet(&p->desc, fdset)) {
187 descriptor_Read(&p->desc, bundle, fdset);
188 if (log_PromptListChanged)
194 server_Write(struct fdescriptor *d, struct bundle *bundle, const fd_set *fdset)
196 /* We never want to write here ! */
197 log_Printf(LogALERT, "server_Write: Internal error: Bad call !\n");
201 struct server server = {
213 server_Reopen(struct bundle *bundle)
215 char name[sizeof server.cfg.sockname];
219 enum server_stat ret;
221 if (server.cfg.sockname[0] != '\0') {
222 strcpy(name, server.cfg.sockname);
223 mask = server.cfg.mask;
224 server_Close(bundle);
225 if (server.cfg.sockname[0] != '\0' && stat(server.cfg.sockname, &st) == 0)
226 if (!(st.st_mode & S_IFSOCK) || unlink(server.cfg.sockname) != 0)
227 return SERVER_FAILED;
228 ret = server_LocalOpen(bundle, name, mask);
229 } else if (server.cfg.port != 0) {
230 port = server.cfg.port;
231 server_Close(bundle);
232 ret = server_TcpOpen(bundle, port);
240 server_LocalOpen(struct bundle *bundle, const char *name, mode_t mask)
242 struct sockaddr_un ifsun;
246 oldmask = (mode_t)-1; /* Silence compiler */
248 if (server.cfg.sockname && !strcmp(server.cfg.sockname, name))
249 server_Close(bundle);
251 memset(&ifsun, '\0', sizeof ifsun);
252 ifsun.sun_len = strlen(name);
253 if (ifsun.sun_len > sizeof ifsun.sun_path - 1) {
254 log_Printf(LogERROR, "Local: %s: Path too long\n", name);
255 return SERVER_INVALID;
257 ifsun.sun_family = AF_LOCAL;
258 strcpy(ifsun.sun_path, name);
260 s = socket(PF_LOCAL, SOCK_STREAM, 0);
262 log_Printf(LogERROR, "Local: socket: %s\n", strerror(errno));
265 setsockopt(s, SOL_SOCKET, SO_REUSEADDR, &s, sizeof s);
266 if (mask != (mode_t)-1)
267 oldmask = umask(mask);
268 if (bind(s, (struct sockaddr *)&ifsun, sizeof ifsun) < 0) {
269 if (mask != (mode_t)-1)
271 log_Printf(LogWARN, "Local: bind: %s\n", strerror(errno));
275 if (mask != (mode_t)-1)
277 if (listen(s, 5) != 0) {
278 log_Printf(LogERROR, "Local: Unable to listen to socket -"
279 " BUNDLE overload?\n");
284 server_Close(bundle);
287 strncpy(server.cfg.sockname, ifsun.sun_path, sizeof server.cfg.sockname - 1);
288 server.cfg.sockname[sizeof server.cfg.sockname - 1] = '\0';
289 server.cfg.mask = mask;
290 log_Printf(LogPHASE, "Listening at local socket %s.\n", name);
295 if (server.fd == -1) {
298 strncpy(server.cfg.sockname, ifsun.sun_path,
299 sizeof server.cfg.sockname - 1);
300 server.cfg.sockname[sizeof server.cfg.sockname - 1] = '\0';
301 server.cfg.mask = mask;
303 return SERVER_FAILED;
307 server_TcpOpen(struct bundle *bundle, u_short port)
309 struct sockaddr_storage ss;
310 struct sockaddr_in *sin = (struct sockaddr_in *)&ss;
312 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)&ss;
316 if (server.cfg.port == port)
317 server_Close(bundle);
320 return SERVER_INVALID;
322 memset(&ss, '\0', sizeof ss);
324 if (probe.ipv6_available) {
325 sin6->sin6_family = AF_INET6;
326 sin6->sin6_port = htons(port);
327 sin6->sin6_len = (u_int8_t)sizeof ss;
329 s = socket(PF_INET6, SOCK_STREAM, 0);
333 sin->sin_family = AF_INET;
334 sin->sin_port = htons(port);
335 sin->sin_len = (u_int8_t)sizeof ss;
336 sin->sin_addr.s_addr = INADDR_ANY;
338 s = socket(PF_INET, SOCK_STREAM, 0);
342 log_Printf(LogERROR, "Tcp: socket: %s\n", strerror(errno));
346 setsockopt(s, SOL_SOCKET, SO_REUSEADDR, &s, sizeof s);
347 if (bind(s, (struct sockaddr *)&ss, sz) < 0) {
348 log_Printf(LogWARN, "Tcp: bind: %s\n", strerror(errno));
352 if (listen(s, 5) != 0) {
353 log_Printf(LogERROR, "Tcp: Unable to listen to socket: %s\n",
358 server_Close(bundle);
360 server.cfg.port = port;
361 *server.cfg.sockname = '\0';
363 log_Printf(LogPHASE, "Listening at port %d.\n", port);
367 if (server.fd == -1) {
369 server.cfg.port = port;
370 *server.cfg.sockname = '\0';
373 return SERVER_FAILED;
377 server_Close(struct bundle *bundle)
379 if (server.fd >= 0) {
380 if (*server.cfg.sockname != '\0') {
381 struct sockaddr_un un;
384 if (getsockname(server.fd, (struct sockaddr *)&un, &sz) == 0 &&
385 un.sun_family == AF_LOCAL && sz == sizeof un)
390 /* Drop associated prompts */
391 log_DestroyPrompts(&server);
400 server_Clear(struct bundle *bundle)
404 ret = server_Close(bundle);
408 *server.cfg.sockname = '\0';