Commit | Line | Data |
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48bb1f76 | 1 | /* -*-c-*- |
2 | * | |
48bb1f76 | 3 | * Socket source and target definitions |
4 | * | |
5 | * (c) 1999 Straylight/Edgeware | |
6 | */ | |
7 | ||
8 | /*----- Licensing notice --------------------------------------------------* | |
9 | * | |
10 | * This file is part of the `fw' port forwarder. | |
11 | * | |
12 | * `fw' is free software; you can redistribute it and/or modify | |
13 | * it under the terms of the GNU General Public License as published by | |
14 | * the Free Software Foundation; either version 2 of the License, or | |
15 | * (at your option) any later version. | |
16 | * | |
17 | * `fw' is distributed in the hope that it will be useful, | |
18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | * GNU General Public License for more details. | |
21 | * | |
22 | * You should have received a copy of the GNU General Public License | |
23 | * along with `fw'; if not, write to the Free Software Foundation, | |
24 | * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
25 | */ | |
26 | ||
48bb1f76 | 27 | /*----- Header files ------------------------------------------------------*/ |
28 | ||
29 | #include "config.h" | |
30 | ||
31 | #include <ctype.h> | |
32 | #include <errno.h> | |
0fe44b09 | 33 | #include <limits.h> |
48bb1f76 | 34 | #include <stdio.h> |
35 | #include <stdlib.h> | |
36 | #include <string.h> | |
37 | ||
e0ce9d38 | 38 | #include <sys/types.h> |
39 | #include <unistd.h> | |
40 | ||
48bb1f76 | 41 | #include <sys/socket.h> |
42 | #include <netinet/in.h> | |
43 | #include <arpa/inet.h> | |
44 | #include <netdb.h> | |
45 | ||
46 | #include <mLib/alloc.h> | |
47 | #include <mLib/conn.h> | |
48 | #include <mLib/dstr.h> | |
49 | #include <mLib/fdflags.h> | |
50 | #include <mLib/sel.h> | |
51 | #include <mLib/sub.h> | |
52 | ||
53 | #include "addr.h" | |
54 | #include "conf.h" | |
55 | #include "endpt.h" | |
56 | #include "fw.h" | |
57 | #include "scan.h" | |
58 | #include "socket.h" | |
59 | #include "target.h" | |
60 | ||
61 | #include "inet.h" | |
62 | #include "un.h" | |
63 | ||
64 | /*----- Data structures ---------------------------------------------------*/ | |
65 | ||
66 | /* --- Socket source options --- */ | |
67 | ||
68 | typedef struct ssource_opts { | |
0fe44b09 | 69 | unsigned opt; |
48bb1f76 | 70 | unsigned conn; |
745cfee1 | 71 | unsigned listen; |
48bb1f76 | 72 | } ssource_opts; |
73 | ||
745cfee1 | 74 | static ssource_opts ssgo = { 256, 0, 5 }; |
0fe44b09 | 75 | |
76 | #define SOCKOPT_LIMIT 0u | |
77 | #define SOCKOPT_NOLIMIT 1u | |
78 | #define SOCKOPT_ONESHOT 2u | |
48bb1f76 | 79 | |
80 | /* --- Socket source --- */ | |
81 | ||
82 | typedef struct ssource { | |
83 | source s; | |
84 | addr *a; | |
85 | target *t; | |
86 | addr_opts *ao; | |
87 | ssource_opts o; | |
88 | sel_file r; | |
89 | } ssource; | |
90 | ||
91 | /* --- Socket target --- */ | |
92 | ||
93 | typedef struct starget { | |
94 | target t; | |
95 | addr *a; | |
96 | addr_opts *ao; | |
97 | } starget; | |
98 | ||
99 | /* --- Socket target endpoint --- */ | |
100 | ||
101 | typedef struct stept { | |
102 | endpt e; | |
103 | conn c; | |
372a98e2 | 104 | char *desc; |
48bb1f76 | 105 | } stept; |
106 | ||
107 | /* --- Socket source endpoint --- */ | |
108 | ||
109 | typedef struct ssept { | |
110 | endpt e; | |
111 | ssource *s; | |
112 | } ssept; | |
113 | ||
48bb1f76 | 114 | /*----- Protocol table ----------------------------------------------------*/ |
115 | ||
116 | static addr_ops *addrs[] = { &inet_ops, &un_ops, 0 }; | |
117 | ||
118 | /*----- Other persistent variables ----------------------------------------*/ | |
119 | ||
0ac54f22 | 120 | static addr_opts gsao = { 0 }, gtao = { 0 }; |
48bb1f76 | 121 | |
122 | /*----- Parsing address types ---------------------------------------------*/ | |
123 | ||
124 | /* --- @getaddrtype@ --- * | |
125 | * | |
126 | * Arguments: @scanner *sc@ = pointer to scanner (for error reporting) | |
127 | * @const char *p@ = pointer to protocol name | |
128 | * @int abbrev@ = nonzero to allow abbreviations | |
129 | * | |
130 | * Returns: Pointer to address operations table or null. | |
131 | * | |
132 | * Use: Looks up a protocol name. Handy when parsing addresses and | |
133 | * other bits of configuration. Returns null if no matching | |
134 | * address was found. | |
135 | */ | |
136 | ||
137 | static addr_ops *getaddrtype(scanner *sc, const char *p, int abbrev) | |
138 | { | |
139 | addr_ops **ops; | |
140 | addr_ops *chosen = 0; | |
141 | size_t sz = strlen(p); | |
142 | ||
143 | for (ops = addrs; *ops; ops++) { | |
144 | if (strncmp((*ops)->name, p, sz) == 0) { | |
145 | if ((*ops)->name[sz] == 0) | |
146 | return (*ops); | |
147 | else if (chosen && abbrev) | |
148 | error(sc, "ambiguous socket address type `%s'", p); | |
149 | chosen = *ops; | |
150 | } | |
151 | } | |
152 | if (!abbrev) | |
153 | return (0); | |
154 | return (chosen); | |
155 | } | |
156 | ||
157 | /* --- @getaddr@ --- * | |
158 | * | |
159 | * Arguments: @scanner *sc@ = pointer to scanner to read from | |
160 | * @unsigned type@ = address type (@ADDR_SRC@ or @ADDR_DEST@) | |
161 | * | |
162 | * Returns: Pointer to an address successfully read. | |
163 | * | |
164 | * Use: Reads an optionally qualified address. | |
165 | */ | |
166 | ||
167 | static addr *getaddr(scanner *sc, unsigned type) | |
168 | { | |
169 | addr_ops *ops = 0; | |
170 | int abbrev = 0; | |
171 | ||
172 | if (sc->t == ':') { | |
173 | token(sc); | |
174 | abbrev = 1; | |
175 | } | |
176 | if (sc->t == CTOK_WORD) | |
177 | ops = getaddrtype(sc, sc->d.buf, abbrev); | |
178 | if (ops) | |
179 | token(sc); | |
180 | else if (abbrev) | |
181 | error(sc, "unknown socket address type `%s'", sc->d.buf); | |
182 | else | |
183 | ops = &inet_ops; | |
184 | if (sc->t == ':') | |
185 | token(sc); | |
186 | ||
187 | return (ops->read(sc, type)); | |
188 | } | |
189 | ||
190 | /*----- Socket endpoints --------------------------------------------------*/ | |
191 | ||
192 | /* --- @wclose@ --- */ | |
193 | ||
194 | static void sept_wclose(endpt *e) | |
195 | { | |
196 | shutdown(e->out->fd, 1); | |
197 | } | |
198 | ||
199 | /* --- @close@ (source) --- */ | |
200 | ||
201 | static void ss_listen(ssource */*ss*/); | |
202 | ||
203 | static void ssept_close(endpt *e) | |
204 | { | |
205 | ssept *ee = (ssept *)e; | |
206 | ||
0fe44b09 | 207 | if (ee->s->o.opt == SOCKOPT_LIMIT) { |
48bb1f76 | 208 | ee->s->o.conn++; |
0fe44b09 | 209 | if (ee->s->o.conn == 1) |
210 | ss_listen(ee->s); | |
211 | } | |
48bb1f76 | 212 | REFFD_DEC(ee->e.in); |
213 | REFFD_DEC(ee->e.out); | |
214 | fw_dec(); | |
215 | DESTROY(ee); | |
216 | } | |
217 | ||
218 | /* --- @close@ (target) --- */ | |
219 | ||
220 | static void stept_close(endpt *e) | |
221 | { | |
222 | stept *ee = (stept *)e; | |
223 | ||
0d3d364b | 224 | if (ee->e.f & EPF_PENDING) |
225 | conn_kill(&ee->c); | |
226 | else { | |
48bb1f76 | 227 | REFFD_DEC(ee->e.in); |
228 | REFFD_DEC(ee->e.out); | |
229 | } | |
230 | ||
745cfee1 | 231 | xfree(ee->desc); |
48bb1f76 | 232 | fw_dec(); |
233 | DESTROY(ee); | |
234 | } | |
235 | ||
0ac54f22 | 236 | /* --- @starget_connected@ --- * |
48bb1f76 | 237 | * |
238 | * Arguments: @int fd@ = file descriptor now ready for use | |
239 | * @void *p@ = pointer to an endpoint structure | |
240 | * | |
241 | * Returns: --- | |
242 | * | |
243 | * Use: Handles successful connection of the target endpoint. | |
244 | */ | |
245 | ||
0ac54f22 | 246 | void starget_connected(int fd, void *p) |
48bb1f76 | 247 | { |
248 | stept *e = p; | |
249 | ||
48bb1f76 | 250 | if (fd == -1) { |
251 | fw_log(-1, "[%s] connection failed: %s", e->desc, strerror(errno)); | |
0d3d364b | 252 | endpt_kill(&e->e); |
48bb1f76 | 253 | } else { |
254 | reffd *r = reffd_init(fd); | |
0ac54f22 | 255 | int opt = 1; |
48bb1f76 | 256 | REFFD_INC(r); |
0ac54f22 | 257 | fdflags(fd, O_NONBLOCK, O_NONBLOCK, FD_CLOEXEC, FD_CLOEXEC); |
258 | setsockopt(fd, SOL_SOCKET, SO_OOBINLINE, &opt, sizeof(opt)); | |
48bb1f76 | 259 | e->e.in = e->e.out = r; |
0d3d364b | 260 | e->e.f &= ~EPF_PENDING; |
48bb1f76 | 261 | if (e->e.other) |
262 | endpt_join(&e->e, e->e.other); | |
263 | } | |
264 | } | |
265 | ||
266 | /* --- Socket endpoint definition --- */ | |
267 | ||
268 | static endpt_ops ssept_ops = { | |
0fe44b09 | 269 | 0, 0, sept_wclose, ssept_close |
48bb1f76 | 270 | }; |
271 | ||
272 | static endpt_ops stept_ops = { | |
0fe44b09 | 273 | 0, 0, sept_wclose, stept_close |
48bb1f76 | 274 | }; |
275 | ||
276 | /*----- Source definition -------------------------------------------------*/ | |
277 | ||
278 | /* --- @option@ --- */ | |
279 | ||
280 | static int ssource_option(source *s, scanner *sc) | |
281 | { | |
282 | ssource *ss = (ssource *)s; | |
283 | ssource_opts *sso = ss ? &ss->o : &ssgo; | |
284 | ||
0ac54f22 | 285 | CONF_BEGIN(sc, "socket", "socket source") |
48bb1f76 | 286 | |
287 | /* --- Make sure the next token is a word --- */ | |
288 | ||
289 | if (sc->t != CTOK_WORD) | |
290 | error(sc, "parse error, option keyword expected"); | |
291 | ||
292 | /* --- Handle options at this level --- */ | |
293 | ||
294 | if (strcmp(sc->d.buf, "conn") == 0) { | |
295 | token(sc); | |
296 | if (sc->t == '=') | |
297 | token(sc); | |
0fe44b09 | 298 | if (sc->t != CTOK_WORD) |
299 | error(sc, "parse error, expected `unlimited', `one-shot' or number"); | |
300 | if (isdigit((unsigned char)sc->d.buf[0])) { | |
301 | sso->conn = atoi(sc->d.buf); | |
302 | if (sso->conn == 0) | |
303 | error(sc, "argument of `conn' must be positive"); | |
304 | sso->opt = SOCKOPT_LIMIT; | |
305 | token(sc); | |
306 | } else { | |
307 | sso->conn = 0; | |
308 | sso->opt = 1 + (1 & conf_enum(sc, | |
309 | "unlimited,one-shot,infinite", | |
310 | ENUM_ABBREV, "`conn' option")); | |
311 | } | |
48bb1f76 | 312 | CONF_ACCEPT; |
313 | } | |
314 | ||
745cfee1 | 315 | if (strcmp(sc->d.buf, "listen") == 0) { |
316 | token(sc); | |
317 | if (sc->t == '=') | |
318 | token(sc); | |
319 | if (sc->t != CTOK_WORD || !isdigit((unsigned char)sc->d.buf[0])) | |
320 | error(sc, "parse error, expected number"); | |
321 | sso->listen = atoi(sc->d.buf); | |
322 | if (sso->listen == 0) | |
323 | error(sc, "argument of `listen' must be positive"); | |
fed9ddde | 324 | token(sc); |
745cfee1 | 325 | CONF_ACCEPT; |
326 | } | |
327 | ||
48bb1f76 | 328 | if (strcmp(sc->d.buf, "logging") == 0 || |
329 | strcmp(sc->d.buf, "log") == 0) { | |
0ac54f22 | 330 | addr_opts *ao = ss ? ss->ao : &gsao; |
48bb1f76 | 331 | token(sc); |
332 | if (sc->t == '=') | |
333 | token(sc); | |
334 | if (conf_enum(sc, "no,yes", ENUM_ABBREV, "logging status")) | |
335 | ao->f &= ~ADDRF_NOLOG; | |
336 | else | |
337 | ao->f |= ADDRF_NOLOG; | |
338 | CONF_ACCEPT; | |
339 | } | |
340 | ||
341 | /* --- Pass the option around the various address types --- */ | |
342 | ||
343 | if (ss) { | |
0ac54f22 | 344 | if (ss->a->ops->option && ss->a->ops->option(sc, ss->ao, ADDR_SRC)) |
48bb1f76 | 345 | CONF_ACCEPT; |
346 | } else { | |
347 | addr_ops **a; | |
348 | for (a = addrs; *a; a++) { | |
0ac54f22 | 349 | if ((*a)->option && (*a)->option(sc, 0, ADDR_GLOBAL)) |
48bb1f76 | 350 | CONF_ACCEPT; |
351 | } | |
352 | } | |
353 | ||
354 | /* --- Nobody understood the option --- */ | |
355 | ||
356 | CONF_END; | |
357 | } | |
358 | ||
359 | /* --- @read@ --- */ | |
360 | ||
361 | static source *ssource_read(scanner *sc) | |
362 | { | |
363 | ssource *ss; | |
364 | ||
365 | (void)(conf_prefix(sc, "socket") || conf_prefix(sc, "sk")); | |
366 | ss = CREATE(ssource); | |
367 | ss->s.ops = &ssource_ops; | |
368 | ss->s.desc = 0; | |
369 | ss->t = 0; | |
370 | ss->a = getaddr(sc, ADDR_SRC); | |
0ac54f22 | 371 | if (ss->a->ops->initsrcopts) |
372 | ss->ao = ss->a->ops->initsrcopts(); | |
b374625f | 373 | else { |
48bb1f76 | 374 | ss->ao = CREATE(addr_opts); |
b374625f MW |
375 | *ss->ao = gsao; |
376 | } | |
48bb1f76 | 377 | ss->o = ssgo; |
378 | return (&ss->s); | |
379 | } | |
380 | ||
381 | /* --- @ss_accept@ --- * | |
382 | * | |
383 | * Arguments: @int fd@ = file descriptor to accept from | |
384 | * @unsigned mode@ = what's ready with the descriptor | |
385 | * @void *p@ = pointer to the source definition | |
386 | * | |
387 | * Returns: --- | |
388 | * | |
389 | * Use: Accepts an incoming connection and attaches it to a target | |
390 | * endpoint. | |
391 | */ | |
392 | ||
0fe44b09 | 393 | static void ssource_destroy(source */*s*/); |
394 | ||
48bb1f76 | 395 | static void ss_accept(int fd, unsigned mode, void *p) |
396 | { | |
397 | ssource *ss = p; | |
398 | ssept *e; | |
399 | endpt *ee; | |
400 | reffd *r; | |
401 | ||
402 | /* --- Make the file descriptor --- */ | |
403 | ||
404 | { | |
405 | int opt = 1; | |
406 | if ((r = ss->a->ops->accept(fd, ss->ao, ss->s.desc)) == 0) | |
407 | return; | |
408 | setsockopt(r->fd, SOL_SOCKET, SO_OOBINLINE, &opt, sizeof(opt)); | |
409 | fdflags(r->fd, O_NONBLOCK, O_NONBLOCK, FD_CLOEXEC, FD_CLOEXEC); | |
410 | } | |
411 | ||
412 | /* --- Make an endpoint --- */ | |
413 | ||
414 | e = CREATE(ssept); | |
415 | e->e.ops = &ssept_ops; | |
416 | e->e.other = 0; | |
417 | e->e.f = EPF_FILE; | |
418 | e->e.t = 0; | |
419 | e->e.in = e->e.out = r; | |
420 | e->s = ss; | |
421 | REFFD_INC(r); | |
422 | ||
423 | /* --- Obtain the target endpoint and let rip --- */ | |
424 | ||
425 | if ((ee = ss->t->ops->create(ss->t, ss->s.desc)) == 0) { | |
426 | REFFD_DEC(r); | |
427 | REFFD_DEC(r); | |
428 | DESTROY(e); | |
429 | return; | |
430 | } | |
0fe44b09 | 431 | fw_inc(); |
48bb1f76 | 432 | |
433 | /* --- Remove the listening socket if necessary --- */ | |
434 | ||
0fe44b09 | 435 | switch (ss->o.opt) { |
436 | case SOCKOPT_LIMIT: | |
437 | ss->o.conn--; | |
438 | if (!ss->o.conn) { | |
439 | if (!(ss->ao->f & ADDRF_NOLOG)) | |
440 | fw_log(-1, "[%s] maximum connections reached", ss->s.desc); | |
441 | sel_rmfile(&ss->r); | |
442 | close(ss->r.fd); | |
443 | if (ss->a->ops->unbind) | |
444 | ss->a->ops->unbind(ss->a); | |
445 | } | |
446 | break; | |
447 | case SOCKOPT_NOLIMIT: | |
448 | break; | |
449 | case SOCKOPT_ONESHOT: | |
450 | sel_rmfile(&ss->r); | |
451 | close(ss->r.fd); | |
452 | if (ss->a->ops->unbind) | |
453 | ss->a->ops->unbind(ss->a); | |
454 | ssource_destroy(&ss->s); | |
455 | break; | |
48bb1f76 | 456 | } |
457 | ||
458 | /* --- Let everything else happen --- */ | |
459 | ||
48bb1f76 | 460 | endpt_join(&e->e, ee); |
461 | } | |
462 | ||
463 | /* --- @ss_listen@ --- * | |
464 | * | |
465 | * Arguments: @ssource *ss@ = source to listen on | |
466 | * | |
467 | * Returns: --- | |
468 | * | |
469 | * Use: Sets the socket to listen again, if it stopped for some | |
470 | * reason. This is a copy of the code in the @read@ function, | |
471 | * because it has different (wildly different) error handling | |
472 | * behaviour. | |
473 | */ | |
474 | ||
48bb1f76 | 475 | static void ss_listen(ssource *ss) |
476 | { | |
48bb1f76 | 477 | int fd; |
0ac54f22 | 478 | int opt = 1; |
48bb1f76 | 479 | |
0fe44b09 | 480 | if (!(ss->ao->f & ADDRF_NOLOG)) |
481 | fw_log(-1, "[%s] reattaching listener", ss->s.desc); | |
48bb1f76 | 482 | |
483 | /* --- Make the socket --- */ | |
484 | ||
0ac54f22 | 485 | if ((fd = ss->a->ops->bind(ss->a, ss->ao)) < 0) { |
48bb1f76 | 486 | fw_log(-1, "[%s] couldn't create socket: %s", |
487 | ss->s.desc, strerror(errno)); | |
488 | goto fail_0; | |
489 | } | |
490 | ||
48bb1f76 | 491 | /* --- Set it to listen for connections --- */ |
492 | ||
0ac54f22 | 493 | setsockopt(fd, SOL_SOCKET, SO_OOBINLINE, &opt, sizeof(opt)); |
494 | fdflags(fd, O_NONBLOCK, O_NONBLOCK, FD_CLOEXEC, FD_CLOEXEC); | |
745cfee1 | 495 | if (listen(fd, ss->o.listen)) { |
48bb1f76 | 496 | fw_log(-1, "[%s] couldn't listen on socket: %s", |
497 | ss->s.desc, strerror(errno)); | |
498 | goto fail_1; | |
499 | } | |
500 | ||
501 | /* --- Set the listener up again --- */ | |
502 | ||
503 | ss->r.fd = fd; | |
504 | sel_addfile(&ss->r); | |
505 | return; | |
506 | ||
507 | /* --- Tidy up if it failed --- * | |
508 | * | |
509 | * I'll just remove the entire source. | |
510 | */ | |
511 | ||
512 | fail_1: | |
513 | close(fd); | |
514 | fail_0: | |
515 | ss->o.conn = 0; | |
516 | ssource_destroy(&ss->s); | |
517 | } | |
518 | ||
519 | /* --- @attach@ --- */ | |
520 | ||
521 | static void ssource_attach(source *s, scanner *sc, target *t) | |
522 | { | |
523 | ssource *ss = (ssource *)s; | |
524 | int fd; | |
0ac54f22 | 525 | int opt = 1; |
48bb1f76 | 526 | |
527 | ss->t = t; | |
528 | ||
529 | /* --- Initialize the description string --- */ | |
530 | ||
531 | { | |
532 | dstr d = DSTR_INIT; | |
533 | dstr_puts(&d, "socket."); | |
534 | ss->a->ops->print(ss->a, ADDR_SRC, &d); | |
535 | dstr_puts(&d, " -> "); | |
536 | dstr_puts(&d, ss->t->desc); | |
537 | ss->s.desc = xstrdup(d.buf); | |
538 | dstr_destroy(&d); | |
539 | } | |
540 | ||
ee599f55 | 541 | /* --- Confirm the address --- */ |
542 | ||
543 | if (ss->a->ops->confirm) | |
544 | ss->a->ops->confirm(ss->a, ADDR_SRC, ss->ao); | |
545 | ||
48bb1f76 | 546 | /* --- Initialize the socket for listening --- */ |
547 | ||
0ac54f22 | 548 | if ((fd = ss->a->ops->bind(ss->a, ss->ao)) < 0) |
549 | error(sc, "couldn't bind socket `%s': %s", ss->s.desc, strerror(errno)); | |
48bb1f76 | 550 | |
0ac54f22 | 551 | /* --- Set it to listen for connections --- */ |
48bb1f76 | 552 | |
0ac54f22 | 553 | setsockopt(fd, SOL_SOCKET, SO_OOBINLINE, &opt, sizeof(opt)); |
554 | fdflags(fd, O_NONBLOCK, O_NONBLOCK, FD_CLOEXEC, FD_CLOEXEC); | |
555 | if (listen(fd, ss->o.listen)) { | |
556 | error(sc, "couldn't listen on socket `%s': %s", | |
557 | ss->s.desc, strerror(errno)); | |
48bb1f76 | 558 | } |
559 | ||
560 | /* --- We're ready to go now --- */ | |
561 | ||
562 | sel_initfile(sel, &ss->r, fd, SEL_READ, ss_accept, ss); | |
563 | sel_addfile(&ss->r); | |
564 | source_add(&ss->s); | |
565 | fw_inc(); | |
566 | } | |
567 | ||
568 | /* --- @destroy@ --- */ | |
569 | ||
570 | static void ssource_destroy(source *s) | |
571 | { | |
572 | ssource *ss = (ssource *)s; | |
573 | ||
14865057 | 574 | if (ss->o.conn || ss->o.opt != SOCKOPT_LIMIT) { |
48bb1f76 | 575 | sel_rmfile(&ss->r); |
576 | close(ss->r.fd); | |
577 | if (ss->a->ops->unbind) | |
578 | ss->a->ops->unbind(ss->a); | |
579 | } | |
0ac54f22 | 580 | if (ss->a->ops->freesrcopts) |
581 | ss->a->ops->freesrcopts(ss->ao); | |
48bb1f76 | 582 | else |
583 | DESTROY(ss->ao); | |
745cfee1 | 584 | xfree(ss->s.desc); |
48bb1f76 | 585 | ss->a->ops->destroy(ss->a); |
586 | ss->t->ops->destroy(ss->t); | |
587 | source_remove(&ss->s); | |
588 | DESTROY(ss); | |
589 | fw_dec(); | |
590 | } | |
591 | ||
592 | /* --- Source definition block --- */ | |
593 | ||
594 | source_ops ssource_ops = { | |
595 | "socket", | |
596 | ssource_option, ssource_read, ssource_attach, ssource_destroy | |
597 | }; | |
598 | ||
599 | /*----- Target definition -------------------------------------------------*/ | |
600 | ||
0ac54f22 | 601 | /* --- @options@ --- */ |
602 | ||
603 | static int starget_option(target *t, scanner *sc) | |
604 | { | |
605 | starget *st = (starget *)t; | |
606 | ||
607 | CONF_BEGIN(sc, "starget", "socket target") | |
608 | ||
609 | /* --- Pass the option around the various address types --- */ | |
610 | ||
611 | if (st) { | |
612 | if (st->a->ops->option && st->a->ops->option(sc, st->ao, ADDR_DEST)) | |
613 | CONF_ACCEPT; | |
614 | } | |
615 | /* We'd have done it already if it was global */ | |
616 | ||
617 | /* --- Done --- */ | |
618 | ||
619 | CONF_END; | |
620 | } | |
621 | ||
48bb1f76 | 622 | /* --- @read@ --- */ |
623 | ||
624 | static target *starget_read(scanner *sc) | |
625 | { | |
626 | starget *st; | |
627 | dstr d = DSTR_INIT; | |
628 | ||
629 | (void)(conf_prefix(sc, "socket") || conf_prefix(sc, "sk")); | |
630 | st = CREATE(starget); | |
631 | st->t.ops = &starget_ops; | |
632 | st->a = getaddr(sc, ADDR_DEST); | |
0ac54f22 | 633 | if (st->a->ops->inittargopts) |
634 | st->ao = st->a->ops->inittargopts(); | |
b374625f | 635 | else { |
0ac54f22 | 636 | st->ao = CREATE(addr_opts); |
b374625f MW |
637 | *st->ao = gtao; |
638 | } | |
48bb1f76 | 639 | dstr_puts(&d, "socket."); |
640 | st->a->ops->print(st->a, ADDR_DEST, &d); | |
641 | st->t.desc = xstrdup(d.buf); | |
642 | dstr_destroy(&d); | |
643 | return (&st->t); | |
644 | } | |
645 | ||
ee599f55 | 646 | /* --- @confirm@ --- */ |
647 | ||
648 | static void starget_confirm(target *t) | |
649 | { | |
650 | starget *st = (starget *)t; | |
651 | ||
652 | if (st->a->ops->confirm) | |
653 | st->a->ops->confirm(st->a, ADDR_DEST, st->ao); | |
654 | } | |
655 | ||
656 | /* --- @create@ --- */ | |
48bb1f76 | 657 | |
658 | static endpt *starget_create(target *t, const char *desc) | |
659 | { | |
660 | starget *st = (starget *)t; | |
661 | stept *e = CREATE(stept); | |
48bb1f76 | 662 | |
48bb1f76 | 663 | e->e.ops = &stept_ops; |
664 | e->e.other = 0; | |
0d3d364b | 665 | e->e.f = EPF_FILE | EPF_PENDING; |
48bb1f76 | 666 | e->e.t = 0; |
372a98e2 | 667 | e->desc = xstrdup(desc); |
0ac54f22 | 668 | if (st->a->ops->connect(st->a, st->ao, &e->c, &e->e)) { |
669 | fw_log(-1, "[%s] couldn't connect: %s", e->desc, strerror(errno)); | |
48bb1f76 | 670 | DESTROY(e); |
671 | return (0); | |
672 | } | |
48bb1f76 | 673 | fw_inc(); |
674 | return (&e->e); | |
675 | } | |
676 | ||
677 | /* --- @destroy@ --- */ | |
678 | ||
679 | static void starget_destroy(target *t) | |
680 | { | |
681 | starget *st = (starget *)t; | |
0ac54f22 | 682 | if (st->a->ops->freetargopts) |
683 | st->a->ops->freetargopts(st->ao); | |
684 | else | |
685 | DESTROY(st->ao); | |
48bb1f76 | 686 | st->a->ops->destroy(st->a); |
745cfee1 | 687 | xfree(st->t.desc); |
48bb1f76 | 688 | DESTROY(st); |
689 | } | |
690 | ||
691 | /* --- Socket target definition block --- */ | |
692 | ||
693 | target_ops starget_ops = { | |
694 | "socket", | |
ee599f55 | 695 | starget_option, starget_read, starget_confirm, |
696 | starget_create, starget_destroy | |
48bb1f76 | 697 | }; |
698 | ||
699 | /*----- That's all, folks -------------------------------------------------*/ |