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Commit | Line | Data |
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f0cbd3ec FB |
1 | /* |
2 | * Copyright (c) 1995 Danny Gasparovski. | |
5fafdf24 TS |
3 | * |
4 | * Please read the file COPYRIGHT for the | |
f0cbd3ec FB |
5 | * terms and conditions of the copyright. |
6 | */ | |
7 | ||
8 | #define WANT_SYS_IOCTL_H | |
9 | #include <slirp.h> | |
10 | #include "ip_icmp.h" | |
ec530c81 FB |
11 | #ifdef __sun__ |
12 | #include <sys/filio.h> | |
13 | #endif | |
f0cbd3ec | 14 | |
9634d903 BS |
15 | static void sofcantrcvmore(struct socket *so); |
16 | static void sofcantsendmore(struct socket *so); | |
17 | ||
18 | #if 0 | |
19 | static void | |
f0cbd3ec FB |
20 | so_init() |
21 | { | |
22 | /* Nothing yet */ | |
23 | } | |
9634d903 | 24 | #endif |
f0cbd3ec FB |
25 | |
26 | struct socket * | |
27 | solookup(head, laddr, lport, faddr, fport) | |
28 | struct socket *head; | |
29 | struct in_addr laddr; | |
30 | u_int lport; | |
31 | struct in_addr faddr; | |
32 | u_int fport; | |
33 | { | |
34 | struct socket *so; | |
5fafdf24 | 35 | |
f0cbd3ec | 36 | for (so = head->so_next; so != head; so = so->so_next) { |
5fafdf24 | 37 | if (so->so_lport == lport && |
f0cbd3ec FB |
38 | so->so_laddr.s_addr == laddr.s_addr && |
39 | so->so_faddr.s_addr == faddr.s_addr && | |
40 | so->so_fport == fport) | |
41 | break; | |
42 | } | |
5fafdf24 | 43 | |
f0cbd3ec FB |
44 | if (so == head) |
45 | return (struct socket *)NULL; | |
46 | return so; | |
5fafdf24 | 47 | |
f0cbd3ec FB |
48 | } |
49 | ||
50 | /* | |
51 | * Create a new socket, initialise the fields | |
52 | * It is the responsibility of the caller to | |
53 | * insque() it into the correct linked-list | |
54 | */ | |
55 | struct socket * | |
56 | socreate() | |
57 | { | |
58 | struct socket *so; | |
5fafdf24 | 59 | |
f0cbd3ec FB |
60 | so = (struct socket *)malloc(sizeof(struct socket)); |
61 | if(so) { | |
62 | memset(so, 0, sizeof(struct socket)); | |
63 | so->so_state = SS_NOFDREF; | |
64 | so->s = -1; | |
65 | } | |
66 | return(so); | |
67 | } | |
68 | ||
69 | /* | |
70 | * remque and free a socket, clobber cache | |
71 | */ | |
72 | void | |
73 | sofree(so) | |
74 | struct socket *so; | |
75 | { | |
76 | if (so->so_emu==EMU_RSH && so->extra) { | |
77 | sofree(so->extra); | |
78 | so->extra=NULL; | |
79 | } | |
80 | if (so == tcp_last_so) | |
81 | tcp_last_so = &tcb; | |
82 | else if (so == udp_last_so) | |
83 | udp_last_so = &udb; | |
5fafdf24 | 84 | |
f0cbd3ec | 85 | m_free(so->so_m); |
5fafdf24 TS |
86 | |
87 | if(so->so_next && so->so_prev) | |
f0cbd3ec FB |
88 | remque(so); /* crashes if so is not in a queue */ |
89 | ||
90 | free(so); | |
91 | } | |
92 | ||
93 | /* | |
94 | * Read from so's socket into sb_snd, updating all relevant sbuf fields | |
95 | * NOTE: This will only be called if it is select()ed for reading, so | |
96 | * a read() of 0 (or less) means it's disconnected | |
97 | */ | |
98 | int | |
99 | soread(so) | |
100 | struct socket *so; | |
101 | { | |
102 | int n, nn, lss, total; | |
103 | struct sbuf *sb = &so->so_snd; | |
104 | int len = sb->sb_datalen - sb->sb_cc; | |
105 | struct iovec iov[2]; | |
106 | int mss = so->so_tcpcb->t_maxseg; | |
5fafdf24 | 107 | |
f0cbd3ec FB |
108 | DEBUG_CALL("soread"); |
109 | DEBUG_ARG("so = %lx", (long )so); | |
5fafdf24 TS |
110 | |
111 | /* | |
f0cbd3ec FB |
112 | * No need to check if there's enough room to read. |
113 | * soread wouldn't have been called if there weren't | |
114 | */ | |
5fafdf24 | 115 | |
f0cbd3ec | 116 | len = sb->sb_datalen - sb->sb_cc; |
5fafdf24 | 117 | |
f0cbd3ec FB |
118 | iov[0].iov_base = sb->sb_wptr; |
119 | if (sb->sb_wptr < sb->sb_rptr) { | |
120 | iov[0].iov_len = sb->sb_rptr - sb->sb_wptr; | |
121 | /* Should never succeed, but... */ | |
122 | if (iov[0].iov_len > len) | |
123 | iov[0].iov_len = len; | |
124 | if (iov[0].iov_len > mss) | |
125 | iov[0].iov_len -= iov[0].iov_len%mss; | |
126 | n = 1; | |
127 | } else { | |
128 | iov[0].iov_len = (sb->sb_data + sb->sb_datalen) - sb->sb_wptr; | |
129 | /* Should never succeed, but... */ | |
130 | if (iov[0].iov_len > len) iov[0].iov_len = len; | |
131 | len -= iov[0].iov_len; | |
132 | if (len) { | |
133 | iov[1].iov_base = sb->sb_data; | |
134 | iov[1].iov_len = sb->sb_rptr - sb->sb_data; | |
135 | if(iov[1].iov_len > len) | |
136 | iov[1].iov_len = len; | |
137 | total = iov[0].iov_len + iov[1].iov_len; | |
138 | if (total > mss) { | |
139 | lss = total%mss; | |
140 | if (iov[1].iov_len > lss) { | |
141 | iov[1].iov_len -= lss; | |
142 | n = 2; | |
143 | } else { | |
144 | lss -= iov[1].iov_len; | |
145 | iov[0].iov_len -= lss; | |
146 | n = 1; | |
147 | } | |
148 | } else | |
149 | n = 2; | |
150 | } else { | |
151 | if (iov[0].iov_len > mss) | |
152 | iov[0].iov_len -= iov[0].iov_len%mss; | |
153 | n = 1; | |
154 | } | |
155 | } | |
5fafdf24 | 156 | |
f0cbd3ec FB |
157 | #ifdef HAVE_READV |
158 | nn = readv(so->s, (struct iovec *)iov, n); | |
159 | DEBUG_MISC((dfd, " ... read nn = %d bytes\n", nn)); | |
160 | #else | |
02d2c54c | 161 | nn = recv(so->s, iov[0].iov_base, iov[0].iov_len,0); |
5fafdf24 | 162 | #endif |
f0cbd3ec FB |
163 | if (nn <= 0) { |
164 | if (nn < 0 && (errno == EINTR || errno == EAGAIN)) | |
165 | return 0; | |
166 | else { | |
167 | DEBUG_MISC((dfd, " --- soread() disconnected, nn = %d, errno = %d-%s\n", nn, errno,strerror(errno))); | |
168 | sofcantrcvmore(so); | |
169 | tcp_sockclosed(sototcpcb(so)); | |
170 | return -1; | |
171 | } | |
172 | } | |
5fafdf24 | 173 | |
f0cbd3ec FB |
174 | #ifndef HAVE_READV |
175 | /* | |
176 | * If there was no error, try and read the second time round | |
177 | * We read again if n = 2 (ie, there's another part of the buffer) | |
178 | * and we read as much as we could in the first read | |
179 | * We don't test for <= 0 this time, because there legitimately | |
180 | * might not be any more data (since the socket is non-blocking), | |
181 | * a close will be detected on next iteration. | |
182 | * A return of -1 wont (shouldn't) happen, since it didn't happen above | |
183 | */ | |
17444c9c FB |
184 | if (n == 2 && nn == iov[0].iov_len) { |
185 | int ret; | |
186 | ret = recv(so->s, iov[1].iov_base, iov[1].iov_len,0); | |
187 | if (ret > 0) | |
188 | nn += ret; | |
189 | } | |
5fafdf24 | 190 | |
f0cbd3ec FB |
191 | DEBUG_MISC((dfd, " ... read nn = %d bytes\n", nn)); |
192 | #endif | |
5fafdf24 | 193 | |
f0cbd3ec FB |
194 | /* Update fields */ |
195 | sb->sb_cc += nn; | |
196 | sb->sb_wptr += nn; | |
197 | if (sb->sb_wptr >= (sb->sb_data + sb->sb_datalen)) | |
198 | sb->sb_wptr -= sb->sb_datalen; | |
199 | return nn; | |
200 | } | |
5fafdf24 | 201 | |
f0cbd3ec FB |
202 | /* |
203 | * Get urgent data | |
5fafdf24 | 204 | * |
f0cbd3ec FB |
205 | * When the socket is created, we set it SO_OOBINLINE, |
206 | * so when OOB data arrives, we soread() it and everything | |
207 | * in the send buffer is sent as urgent data | |
208 | */ | |
209 | void | |
210 | sorecvoob(so) | |
211 | struct socket *so; | |
212 | { | |
213 | struct tcpcb *tp = sototcpcb(so); | |
214 | ||
215 | DEBUG_CALL("sorecvoob"); | |
216 | DEBUG_ARG("so = %lx", (long)so); | |
5fafdf24 | 217 | |
f0cbd3ec FB |
218 | /* |
219 | * We take a guess at how much urgent data has arrived. | |
220 | * In most situations, when urgent data arrives, the next | |
221 | * read() should get all the urgent data. This guess will | |
222 | * be wrong however if more data arrives just after the | |
5fafdf24 | 223 | * urgent data, or the read() doesn't return all the |
f0cbd3ec FB |
224 | * urgent data. |
225 | */ | |
226 | soread(so); | |
227 | tp->snd_up = tp->snd_una + so->so_snd.sb_cc; | |
228 | tp->t_force = 1; | |
229 | tcp_output(tp); | |
230 | tp->t_force = 0; | |
231 | } | |
232 | ||
233 | /* | |
234 | * Send urgent data | |
235 | * There's a lot duplicated code here, but... | |
236 | */ | |
237 | int | |
238 | sosendoob(so) | |
239 | struct socket *so; | |
240 | { | |
241 | struct sbuf *sb = &so->so_rcv; | |
242 | char buff[2048]; /* XXX Shouldn't be sending more oob data than this */ | |
5fafdf24 | 243 | |
f0cbd3ec | 244 | int n, len; |
5fafdf24 | 245 | |
f0cbd3ec FB |
246 | DEBUG_CALL("sosendoob"); |
247 | DEBUG_ARG("so = %lx", (long)so); | |
248 | DEBUG_ARG("sb->sb_cc = %d", sb->sb_cc); | |
5fafdf24 | 249 | |
f0cbd3ec FB |
250 | if (so->so_urgc > 2048) |
251 | so->so_urgc = 2048; /* XXXX */ | |
5fafdf24 | 252 | |
f0cbd3ec FB |
253 | if (sb->sb_rptr < sb->sb_wptr) { |
254 | /* We can send it directly */ | |
255 | n = send(so->s, sb->sb_rptr, so->so_urgc, (MSG_OOB)); /* |MSG_DONTWAIT)); */ | |
256 | so->so_urgc -= n; | |
3b46e624 | 257 | |
f0cbd3ec FB |
258 | DEBUG_MISC((dfd, " --- sent %d bytes urgent data, %d urgent bytes left\n", n, so->so_urgc)); |
259 | } else { | |
5fafdf24 | 260 | /* |
f0cbd3ec FB |
261 | * Since there's no sendv or sendtov like writev, |
262 | * we must copy all data to a linear buffer then | |
263 | * send it all | |
264 | */ | |
265 | len = (sb->sb_data + sb->sb_datalen) - sb->sb_rptr; | |
266 | if (len > so->so_urgc) len = so->so_urgc; | |
267 | memcpy(buff, sb->sb_rptr, len); | |
268 | so->so_urgc -= len; | |
269 | if (so->so_urgc) { | |
270 | n = sb->sb_wptr - sb->sb_data; | |
271 | if (n > so->so_urgc) n = so->so_urgc; | |
272 | memcpy((buff + len), sb->sb_data, n); | |
273 | so->so_urgc -= n; | |
274 | len += n; | |
275 | } | |
276 | n = send(so->s, buff, len, (MSG_OOB)); /* |MSG_DONTWAIT)); */ | |
277 | #ifdef DEBUG | |
278 | if (n != len) | |
279 | DEBUG_ERROR((dfd, "Didn't send all data urgently XXXXX\n")); | |
3b46e624 | 280 | #endif |
f0cbd3ec FB |
281 | DEBUG_MISC((dfd, " ---2 sent %d bytes urgent data, %d urgent bytes left\n", n, so->so_urgc)); |
282 | } | |
5fafdf24 | 283 | |
f0cbd3ec FB |
284 | sb->sb_cc -= n; |
285 | sb->sb_rptr += n; | |
286 | if (sb->sb_rptr >= (sb->sb_data + sb->sb_datalen)) | |
287 | sb->sb_rptr -= sb->sb_datalen; | |
5fafdf24 | 288 | |
f0cbd3ec FB |
289 | return n; |
290 | } | |
291 | ||
292 | /* | |
5fafdf24 | 293 | * Write data from so_rcv to so's socket, |
f0cbd3ec FB |
294 | * updating all sbuf field as necessary |
295 | */ | |
296 | int | |
297 | sowrite(so) | |
298 | struct socket *so; | |
299 | { | |
300 | int n,nn; | |
301 | struct sbuf *sb = &so->so_rcv; | |
302 | int len = sb->sb_cc; | |
303 | struct iovec iov[2]; | |
5fafdf24 | 304 | |
f0cbd3ec FB |
305 | DEBUG_CALL("sowrite"); |
306 | DEBUG_ARG("so = %lx", (long)so); | |
5fafdf24 | 307 | |
f0cbd3ec FB |
308 | if (so->so_urgc) { |
309 | sosendoob(so); | |
310 | if (sb->sb_cc == 0) | |
311 | return 0; | |
312 | } | |
313 | ||
314 | /* | |
315 | * No need to check if there's something to write, | |
316 | * sowrite wouldn't have been called otherwise | |
317 | */ | |
5fafdf24 | 318 | |
f0cbd3ec | 319 | len = sb->sb_cc; |
5fafdf24 | 320 | |
f0cbd3ec FB |
321 | iov[0].iov_base = sb->sb_rptr; |
322 | if (sb->sb_rptr < sb->sb_wptr) { | |
323 | iov[0].iov_len = sb->sb_wptr - sb->sb_rptr; | |
324 | /* Should never succeed, but... */ | |
325 | if (iov[0].iov_len > len) iov[0].iov_len = len; | |
326 | n = 1; | |
327 | } else { | |
328 | iov[0].iov_len = (sb->sb_data + sb->sb_datalen) - sb->sb_rptr; | |
329 | if (iov[0].iov_len > len) iov[0].iov_len = len; | |
330 | len -= iov[0].iov_len; | |
331 | if (len) { | |
332 | iov[1].iov_base = sb->sb_data; | |
333 | iov[1].iov_len = sb->sb_wptr - sb->sb_data; | |
334 | if (iov[1].iov_len > len) iov[1].iov_len = len; | |
335 | n = 2; | |
336 | } else | |
337 | n = 1; | |
338 | } | |
339 | /* Check if there's urgent data to send, and if so, send it */ | |
340 | ||
341 | #ifdef HAVE_READV | |
342 | nn = writev(so->s, (const struct iovec *)iov, n); | |
5fafdf24 | 343 | |
f0cbd3ec FB |
344 | DEBUG_MISC((dfd, " ... wrote nn = %d bytes\n", nn)); |
345 | #else | |
02d2c54c | 346 | nn = send(so->s, iov[0].iov_base, iov[0].iov_len,0); |
f0cbd3ec FB |
347 | #endif |
348 | /* This should never happen, but people tell me it does *shrug* */ | |
349 | if (nn < 0 && (errno == EAGAIN || errno == EINTR)) | |
350 | return 0; | |
5fafdf24 | 351 | |
f0cbd3ec FB |
352 | if (nn <= 0) { |
353 | DEBUG_MISC((dfd, " --- sowrite disconnected, so->so_state = %x, errno = %d\n", | |
354 | so->so_state, errno)); | |
355 | sofcantsendmore(so); | |
356 | tcp_sockclosed(sototcpcb(so)); | |
357 | return -1; | |
358 | } | |
5fafdf24 | 359 | |
f0cbd3ec | 360 | #ifndef HAVE_READV |
3bc2175d FB |
361 | if (n == 2 && nn == iov[0].iov_len) { |
362 | int ret; | |
363 | ret = send(so->s, iov[1].iov_base, iov[1].iov_len,0); | |
364 | if (ret > 0) | |
365 | nn += ret; | |
366 | } | |
f0cbd3ec FB |
367 | DEBUG_MISC((dfd, " ... wrote nn = %d bytes\n", nn)); |
368 | #endif | |
5fafdf24 | 369 | |
f0cbd3ec FB |
370 | /* Update sbuf */ |
371 | sb->sb_cc -= nn; | |
372 | sb->sb_rptr += nn; | |
373 | if (sb->sb_rptr >= (sb->sb_data + sb->sb_datalen)) | |
374 | sb->sb_rptr -= sb->sb_datalen; | |
5fafdf24 | 375 | |
f0cbd3ec FB |
376 | /* |
377 | * If in DRAIN mode, and there's no more data, set | |
378 | * it CANTSENDMORE | |
379 | */ | |
380 | if ((so->so_state & SS_FWDRAIN) && sb->sb_cc == 0) | |
381 | sofcantsendmore(so); | |
5fafdf24 | 382 | |
f0cbd3ec FB |
383 | return nn; |
384 | } | |
385 | ||
386 | /* | |
387 | * recvfrom() a UDP socket | |
388 | */ | |
389 | void | |
390 | sorecvfrom(so) | |
391 | struct socket *so; | |
392 | { | |
393 | struct sockaddr_in addr; | |
242acf3a | 394 | socklen_t addrlen = sizeof(struct sockaddr_in); |
5fafdf24 | 395 | |
f0cbd3ec FB |
396 | DEBUG_CALL("sorecvfrom"); |
397 | DEBUG_ARG("so = %lx", (long)so); | |
5fafdf24 | 398 | |
f0cbd3ec FB |
399 | if (so->so_type == IPPROTO_ICMP) { /* This is a "ping" reply */ |
400 | char buff[256]; | |
401 | int len; | |
3b46e624 | 402 | |
5fafdf24 | 403 | len = recvfrom(so->s, buff, 256, 0, |
f0cbd3ec FB |
404 | (struct sockaddr *)&addr, &addrlen); |
405 | /* XXX Check if reply is "correct"? */ | |
3b46e624 | 406 | |
f0cbd3ec FB |
407 | if(len == -1 || len == 0) { |
408 | u_char code=ICMP_UNREACH_PORT; | |
409 | ||
410 | if(errno == EHOSTUNREACH) code=ICMP_UNREACH_HOST; | |
411 | else if(errno == ENETUNREACH) code=ICMP_UNREACH_NET; | |
3b46e624 | 412 | |
f0cbd3ec FB |
413 | DEBUG_MISC((dfd," udp icmp rx errno = %d-%s\n", |
414 | errno,strerror(errno))); | |
415 | icmp_error(so->so_m, ICMP_UNREACH,code, 0,strerror(errno)); | |
416 | } else { | |
417 | icmp_reflect(so->so_m); | |
418 | so->so_m = 0; /* Don't m_free() it again! */ | |
419 | } | |
420 | /* No need for this socket anymore, udp_detach it */ | |
421 | udp_detach(so); | |
422 | } else { /* A "normal" UDP packet */ | |
423 | struct mbuf *m; | |
424 | int len, n; | |
425 | ||
426 | if (!(m = m_get())) return; | |
9634d903 | 427 | m->m_data += IF_MAXLINKHDR; |
3b46e624 | 428 | |
5fafdf24 | 429 | /* |
f0cbd3ec FB |
430 | * XXX Shouldn't FIONREAD packets destined for port 53, |
431 | * but I don't know the max packet size for DNS lookups | |
432 | */ | |
433 | len = M_FREEROOM(m); | |
434 | /* if (so->so_fport != htons(53)) { */ | |
379ff53d | 435 | ioctlsocket(so->s, FIONREAD, &n); |
3b46e624 | 436 | |
f0cbd3ec FB |
437 | if (n > len) { |
438 | n = (m->m_data - m->m_dat) + m->m_len + n + 1; | |
439 | m_inc(m, n); | |
440 | len = M_FREEROOM(m); | |
441 | } | |
442 | /* } */ | |
3b46e624 | 443 | |
f0cbd3ec FB |
444 | m->m_len = recvfrom(so->s, m->m_data, len, 0, |
445 | (struct sockaddr *)&addr, &addrlen); | |
5fafdf24 | 446 | DEBUG_MISC((dfd, " did recvfrom %d, errno = %d-%s\n", |
f0cbd3ec FB |
447 | m->m_len, errno,strerror(errno))); |
448 | if(m->m_len<0) { | |
449 | u_char code=ICMP_UNREACH_PORT; | |
450 | ||
451 | if(errno == EHOSTUNREACH) code=ICMP_UNREACH_HOST; | |
452 | else if(errno == ENETUNREACH) code=ICMP_UNREACH_NET; | |
3b46e624 | 453 | |
f0cbd3ec FB |
454 | DEBUG_MISC((dfd," rx error, tx icmp ICMP_UNREACH:%i\n", code)); |
455 | icmp_error(so->so_m, ICMP_UNREACH,code, 0,strerror(errno)); | |
456 | m_free(m); | |
457 | } else { | |
458 | /* | |
459 | * Hack: domain name lookup will be used the most for UDP, | |
460 | * and since they'll only be used once there's no need | |
461 | * for the 4 minute (or whatever) timeout... So we time them | |
462 | * out much quicker (10 seconds for now...) | |
463 | */ | |
464 | if (so->so_expire) { | |
465 | if (so->so_fport == htons(53)) | |
466 | so->so_expire = curtime + SO_EXPIREFAST; | |
467 | else | |
468 | so->so_expire = curtime + SO_EXPIRE; | |
469 | } | |
470 | ||
471 | /* if (m->m_len == len) { | |
472 | * m_inc(m, MINCSIZE); | |
473 | * m->m_len = 0; | |
474 | * } | |
475 | */ | |
3b46e624 | 476 | |
5fafdf24 | 477 | /* |
f0cbd3ec FB |
478 | * If this packet was destined for CTL_ADDR, |
479 | * make it look like that's where it came from, done by udp_output | |
480 | */ | |
481 | udp_output(so, m, &addr); | |
482 | } /* rx error */ | |
483 | } /* if ping packet */ | |
484 | } | |
485 | ||
486 | /* | |
487 | * sendto() a socket | |
488 | */ | |
489 | int | |
490 | sosendto(so, m) | |
491 | struct socket *so; | |
492 | struct mbuf *m; | |
493 | { | |
494 | int ret; | |
495 | struct sockaddr_in addr; | |
496 | ||
497 | DEBUG_CALL("sosendto"); | |
498 | DEBUG_ARG("so = %lx", (long)so); | |
499 | DEBUG_ARG("m = %lx", (long)m); | |
5fafdf24 | 500 | |
f0cbd3ec FB |
501 | addr.sin_family = AF_INET; |
502 | if ((so->so_faddr.s_addr & htonl(0xffffff00)) == special_addr.s_addr) { | |
503 | /* It's an alias */ | |
504 | switch(ntohl(so->so_faddr.s_addr) & 0xff) { | |
505 | case CTL_DNS: | |
506 | addr.sin_addr = dns_addr; | |
507 | break; | |
508 | case CTL_ALIAS: | |
509 | default: | |
510 | addr.sin_addr = loopback_addr; | |
511 | break; | |
512 | } | |
513 | } else | |
514 | addr.sin_addr = so->so_faddr; | |
515 | addr.sin_port = so->so_fport; | |
516 | ||
517 | DEBUG_MISC((dfd, " sendto()ing, addr.sin_port=%d, addr.sin_addr.s_addr=%.16s\n", ntohs(addr.sin_port), inet_ntoa(addr.sin_addr))); | |
5fafdf24 | 518 | |
f0cbd3ec FB |
519 | /* Don't care what port we get */ |
520 | ret = sendto(so->s, m->m_data, m->m_len, 0, | |
521 | (struct sockaddr *)&addr, sizeof (struct sockaddr)); | |
522 | if (ret < 0) | |
523 | return -1; | |
5fafdf24 | 524 | |
f0cbd3ec FB |
525 | /* |
526 | * Kill the socket if there's no reply in 4 minutes, | |
527 | * but only if it's an expirable socket | |
528 | */ | |
529 | if (so->so_expire) | |
530 | so->so_expire = curtime + SO_EXPIRE; | |
531 | so->so_state = SS_ISFCONNECTED; /* So that it gets select()ed */ | |
532 | return 0; | |
533 | } | |
534 | ||
535 | /* | |
536 | * XXX This should really be tcp_listen | |
537 | */ | |
538 | struct socket * | |
539 | solisten(port, laddr, lport, flags) | |
540 | u_int port; | |
541 | u_int32_t laddr; | |
542 | u_int lport; | |
543 | int flags; | |
544 | { | |
545 | struct sockaddr_in addr; | |
546 | struct socket *so; | |
242acf3a AZ |
547 | int s, opt = 1; |
548 | socklen_t addrlen = sizeof(addr); | |
f0cbd3ec FB |
549 | |
550 | DEBUG_CALL("solisten"); | |
551 | DEBUG_ARG("port = %d", port); | |
552 | DEBUG_ARG("laddr = %x", laddr); | |
553 | DEBUG_ARG("lport = %d", lport); | |
554 | DEBUG_ARG("flags = %x", flags); | |
5fafdf24 | 555 | |
f0cbd3ec FB |
556 | if ((so = socreate()) == NULL) { |
557 | /* free(so); Not sofree() ??? free(NULL) == NOP */ | |
558 | return NULL; | |
559 | } | |
5fafdf24 | 560 | |
f0cbd3ec FB |
561 | /* Don't tcp_attach... we don't need so_snd nor so_rcv */ |
562 | if ((so->so_tcpcb = tcp_newtcpcb(so)) == NULL) { | |
563 | free(so); | |
564 | return NULL; | |
565 | } | |
566 | insque(so,&tcb); | |
5fafdf24 TS |
567 | |
568 | /* | |
f0cbd3ec FB |
569 | * SS_FACCEPTONCE sockets must time out. |
570 | */ | |
571 | if (flags & SS_FACCEPTONCE) | |
572 | so->so_tcpcb->t_timer[TCPT_KEEP] = TCPTV_KEEP_INIT*2; | |
5fafdf24 | 573 | |
f0cbd3ec FB |
574 | so->so_state = (SS_FACCEPTCONN|flags); |
575 | so->so_lport = lport; /* Kept in network format */ | |
576 | so->so_laddr.s_addr = laddr; /* Ditto */ | |
5fafdf24 | 577 | |
f0cbd3ec FB |
578 | addr.sin_family = AF_INET; |
579 | addr.sin_addr.s_addr = INADDR_ANY; | |
580 | addr.sin_port = port; | |
5fafdf24 | 581 | |
f0cbd3ec | 582 | if (((s = socket(AF_INET,SOCK_STREAM,0)) < 0) || |
b55669bf | 583 | (setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&opt,sizeof(int)) < 0) || |
f0cbd3ec FB |
584 | (bind(s,(struct sockaddr *)&addr, sizeof(addr)) < 0) || |
585 | (listen(s,1) < 0)) { | |
586 | int tmperrno = errno; /* Don't clobber the real reason we failed */ | |
3b46e624 | 587 | |
f0cbd3ec FB |
588 | close(s); |
589 | sofree(so); | |
590 | /* Restore the real errno */ | |
02d2c54c FB |
591 | #ifdef _WIN32 |
592 | WSASetLastError(tmperrno); | |
593 | #else | |
f0cbd3ec | 594 | errno = tmperrno; |
02d2c54c | 595 | #endif |
f0cbd3ec FB |
596 | return NULL; |
597 | } | |
f0cbd3ec | 598 | setsockopt(s,SOL_SOCKET,SO_OOBINLINE,(char *)&opt,sizeof(int)); |
5fafdf24 | 599 | |
f0cbd3ec FB |
600 | getsockname(s,(struct sockaddr *)&addr,&addrlen); |
601 | so->so_fport = addr.sin_port; | |
602 | if (addr.sin_addr.s_addr == 0 || addr.sin_addr.s_addr == loopback_addr.s_addr) | |
8dbca8dd | 603 | so->so_faddr = alias_addr; |
f0cbd3ec FB |
604 | else |
605 | so->so_faddr = addr.sin_addr; | |
606 | ||
607 | so->s = s; | |
608 | return so; | |
609 | } | |
610 | ||
9634d903 | 611 | #if 0 |
5fafdf24 | 612 | /* |
f0cbd3ec FB |
613 | * Data is available in so_rcv |
614 | * Just write() the data to the socket | |
615 | * XXX not yet... | |
616 | */ | |
9634d903 | 617 | static void |
f0cbd3ec FB |
618 | sorwakeup(so) |
619 | struct socket *so; | |
620 | { | |
621 | /* sowrite(so); */ | |
622 | /* FD_CLR(so->s,&writefds); */ | |
623 | } | |
5fafdf24 | 624 | |
f0cbd3ec FB |
625 | /* |
626 | * Data has been freed in so_snd | |
627 | * We have room for a read() if we want to | |
628 | * For now, don't read, it'll be done in the main loop | |
629 | */ | |
9634d903 | 630 | static void |
f0cbd3ec FB |
631 | sowwakeup(so) |
632 | struct socket *so; | |
633 | { | |
634 | /* Nothing, yet */ | |
635 | } | |
9634d903 | 636 | #endif |
f0cbd3ec FB |
637 | |
638 | /* | |
639 | * Various session state calls | |
640 | * XXX Should be #define's | |
641 | * The socket state stuff needs work, these often get call 2 or 3 | |
642 | * times each when only 1 was needed | |
643 | */ | |
644 | void | |
645 | soisfconnecting(so) | |
646 | register struct socket *so; | |
647 | { | |
648 | so->so_state &= ~(SS_NOFDREF|SS_ISFCONNECTED|SS_FCANTRCVMORE| | |
649 | SS_FCANTSENDMORE|SS_FWDRAIN); | |
650 | so->so_state |= SS_ISFCONNECTING; /* Clobber other states */ | |
651 | } | |
652 | ||
653 | void | |
654 | soisfconnected(so) | |
655 | register struct socket *so; | |
656 | { | |
657 | so->so_state &= ~(SS_ISFCONNECTING|SS_FWDRAIN|SS_NOFDREF); | |
658 | so->so_state |= SS_ISFCONNECTED; /* Clobber other states */ | |
659 | } | |
660 | ||
9634d903 BS |
661 | static void |
662 | sofcantrcvmore(struct socket *so) | |
f0cbd3ec FB |
663 | { |
664 | if ((so->so_state & SS_NOFDREF) == 0) { | |
665 | shutdown(so->s,0); | |
02d2c54c FB |
666 | if(global_writefds) { |
667 | FD_CLR(so->s,global_writefds); | |
668 | } | |
f0cbd3ec FB |
669 | } |
670 | so->so_state &= ~(SS_ISFCONNECTING); | |
671 | if (so->so_state & SS_FCANTSENDMORE) | |
672 | so->so_state = SS_NOFDREF; /* Don't select it */ /* XXX close() here as well? */ | |
673 | else | |
674 | so->so_state |= SS_FCANTRCVMORE; | |
675 | } | |
676 | ||
9634d903 BS |
677 | static void |
678 | sofcantsendmore(struct socket *so) | |
f0cbd3ec FB |
679 | { |
680 | if ((so->so_state & SS_NOFDREF) == 0) { | |
02d2c54c FB |
681 | shutdown(so->s,1); /* send FIN to fhost */ |
682 | if (global_readfds) { | |
683 | FD_CLR(so->s,global_readfds); | |
684 | } | |
685 | if (global_xfds) { | |
686 | FD_CLR(so->s,global_xfds); | |
687 | } | |
f0cbd3ec FB |
688 | } |
689 | so->so_state &= ~(SS_ISFCONNECTING); | |
690 | if (so->so_state & SS_FCANTRCVMORE) | |
691 | so->so_state = SS_NOFDREF; /* as above */ | |
692 | else | |
693 | so->so_state |= SS_FCANTSENDMORE; | |
694 | } | |
695 | ||
696 | void | |
697 | soisfdisconnected(so) | |
698 | struct socket *so; | |
699 | { | |
700 | /* so->so_state &= ~(SS_ISFCONNECTING|SS_ISFCONNECTED); */ | |
701 | /* close(so->s); */ | |
702 | /* so->so_state = SS_ISFDISCONNECTED; */ | |
703 | /* | |
704 | * XXX Do nothing ... ? | |
705 | */ | |
706 | } | |
707 | ||
708 | /* | |
709 | * Set write drain mode | |
710 | * Set CANTSENDMORE once all data has been write()n | |
711 | */ | |
712 | void | |
713 | sofwdrain(so) | |
714 | struct socket *so; | |
715 | { | |
716 | if (so->so_rcv.sb_cc) | |
717 | so->so_state |= SS_FWDRAIN; | |
718 | else | |
719 | sofcantsendmore(so); | |
720 | } | |
721 |