48bb1f76 |
1 | /* -*-c-*- |
2 | * |
7481fc9c |
3 | * $Id: socket.c,v 1.12 2004/04/08 01:36:25 mdw Exp $ |
48bb1f76 |
4 | * |
5 | * Socket source and target definitions |
6 | * |
7 | * (c) 1999 Straylight/Edgeware |
8 | */ |
9 | |
10 | /*----- Licensing notice --------------------------------------------------* |
11 | * |
12 | * This file is part of the `fw' port forwarder. |
13 | * |
14 | * `fw' is free software; you can redistribute it and/or modify |
15 | * it under the terms of the GNU General Public License as published by |
16 | * the Free Software Foundation; either version 2 of the License, or |
17 | * (at your option) any later version. |
18 | * |
19 | * `fw' is distributed in the hope that it will be useful, |
20 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
22 | * GNU General Public License for more details. |
23 | * |
24 | * You should have received a copy of the GNU General Public License |
25 | * along with `fw'; if not, write to the Free Software Foundation, |
26 | * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
27 | */ |
28 | |
48bb1f76 |
29 | /*----- Header files ------------------------------------------------------*/ |
30 | |
31 | #include "config.h" |
32 | |
33 | #include <ctype.h> |
34 | #include <errno.h> |
0fe44b09 |
35 | #include <limits.h> |
48bb1f76 |
36 | #include <stdio.h> |
37 | #include <stdlib.h> |
38 | #include <string.h> |
39 | |
e0ce9d38 |
40 | #include <sys/types.h> |
41 | #include <unistd.h> |
42 | |
48bb1f76 |
43 | #include <sys/socket.h> |
44 | #include <netinet/in.h> |
45 | #include <arpa/inet.h> |
46 | #include <netdb.h> |
47 | |
48 | #include <mLib/alloc.h> |
49 | #include <mLib/conn.h> |
50 | #include <mLib/dstr.h> |
51 | #include <mLib/fdflags.h> |
52 | #include <mLib/sel.h> |
53 | #include <mLib/sub.h> |
54 | |
55 | #include "addr.h" |
56 | #include "conf.h" |
57 | #include "endpt.h" |
58 | #include "fw.h" |
59 | #include "scan.h" |
60 | #include "socket.h" |
61 | #include "target.h" |
62 | |
63 | #include "inet.h" |
64 | #include "un.h" |
65 | |
66 | /*----- Data structures ---------------------------------------------------*/ |
67 | |
68 | /* --- Socket source options --- */ |
69 | |
70 | typedef struct ssource_opts { |
0fe44b09 |
71 | unsigned opt; |
48bb1f76 |
72 | unsigned conn; |
745cfee1 |
73 | unsigned listen; |
48bb1f76 |
74 | } ssource_opts; |
75 | |
745cfee1 |
76 | static ssource_opts ssgo = { 256, 0, 5 }; |
0fe44b09 |
77 | |
78 | #define SOCKOPT_LIMIT 0u |
79 | #define SOCKOPT_NOLIMIT 1u |
80 | #define SOCKOPT_ONESHOT 2u |
48bb1f76 |
81 | |
82 | /* --- Socket source --- */ |
83 | |
84 | typedef struct ssource { |
85 | source s; |
86 | addr *a; |
87 | target *t; |
88 | addr_opts *ao; |
89 | ssource_opts o; |
90 | sel_file r; |
91 | } ssource; |
92 | |
93 | /* --- Socket target --- */ |
94 | |
95 | typedef struct starget { |
96 | target t; |
97 | addr *a; |
98 | addr_opts *ao; |
99 | } starget; |
100 | |
101 | /* --- Socket target endpoint --- */ |
102 | |
103 | typedef struct stept { |
104 | endpt e; |
105 | conn c; |
372a98e2 |
106 | char *desc; |
48bb1f76 |
107 | } stept; |
108 | |
109 | /* --- Socket source endpoint --- */ |
110 | |
111 | typedef struct ssept { |
112 | endpt e; |
113 | ssource *s; |
114 | } ssept; |
115 | |
48bb1f76 |
116 | /*----- Protocol table ----------------------------------------------------*/ |
117 | |
118 | static addr_ops *addrs[] = { &inet_ops, &un_ops, 0 }; |
119 | |
120 | /*----- Other persistent variables ----------------------------------------*/ |
121 | |
0ac54f22 |
122 | static addr_opts gsao = { 0 }, gtao = { 0 }; |
48bb1f76 |
123 | |
124 | /*----- Parsing address types ---------------------------------------------*/ |
125 | |
126 | /* --- @getaddrtype@ --- * |
127 | * |
128 | * Arguments: @scanner *sc@ = pointer to scanner (for error reporting) |
129 | * @const char *p@ = pointer to protocol name |
130 | * @int abbrev@ = nonzero to allow abbreviations |
131 | * |
132 | * Returns: Pointer to address operations table or null. |
133 | * |
134 | * Use: Looks up a protocol name. Handy when parsing addresses and |
135 | * other bits of configuration. Returns null if no matching |
136 | * address was found. |
137 | */ |
138 | |
139 | static addr_ops *getaddrtype(scanner *sc, const char *p, int abbrev) |
140 | { |
141 | addr_ops **ops; |
142 | addr_ops *chosen = 0; |
143 | size_t sz = strlen(p); |
144 | |
145 | for (ops = addrs; *ops; ops++) { |
146 | if (strncmp((*ops)->name, p, sz) == 0) { |
147 | if ((*ops)->name[sz] == 0) |
148 | return (*ops); |
149 | else if (chosen && abbrev) |
150 | error(sc, "ambiguous socket address type `%s'", p); |
151 | chosen = *ops; |
152 | } |
153 | } |
154 | if (!abbrev) |
155 | return (0); |
156 | return (chosen); |
157 | } |
158 | |
159 | /* --- @getaddr@ --- * |
160 | * |
161 | * Arguments: @scanner *sc@ = pointer to scanner to read from |
162 | * @unsigned type@ = address type (@ADDR_SRC@ or @ADDR_DEST@) |
163 | * |
164 | * Returns: Pointer to an address successfully read. |
165 | * |
166 | * Use: Reads an optionally qualified address. |
167 | */ |
168 | |
169 | static addr *getaddr(scanner *sc, unsigned type) |
170 | { |
171 | addr_ops *ops = 0; |
172 | int abbrev = 0; |
173 | |
174 | if (sc->t == ':') { |
175 | token(sc); |
176 | abbrev = 1; |
177 | } |
178 | if (sc->t == CTOK_WORD) |
179 | ops = getaddrtype(sc, sc->d.buf, abbrev); |
180 | if (ops) |
181 | token(sc); |
182 | else if (abbrev) |
183 | error(sc, "unknown socket address type `%s'", sc->d.buf); |
184 | else |
185 | ops = &inet_ops; |
186 | if (sc->t == ':') |
187 | token(sc); |
188 | |
189 | return (ops->read(sc, type)); |
190 | } |
191 | |
192 | /*----- Socket endpoints --------------------------------------------------*/ |
193 | |
194 | /* --- @wclose@ --- */ |
195 | |
196 | static void sept_wclose(endpt *e) |
197 | { |
198 | shutdown(e->out->fd, 1); |
199 | } |
200 | |
201 | /* --- @close@ (source) --- */ |
202 | |
203 | static void ss_listen(ssource */*ss*/); |
204 | |
205 | static void ssept_close(endpt *e) |
206 | { |
207 | ssept *ee = (ssept *)e; |
208 | |
0fe44b09 |
209 | if (ee->s->o.opt == SOCKOPT_LIMIT) { |
48bb1f76 |
210 | ee->s->o.conn++; |
0fe44b09 |
211 | if (ee->s->o.conn == 1) |
212 | ss_listen(ee->s); |
213 | } |
48bb1f76 |
214 | REFFD_DEC(ee->e.in); |
215 | REFFD_DEC(ee->e.out); |
216 | fw_dec(); |
217 | DESTROY(ee); |
218 | } |
219 | |
220 | /* --- @close@ (target) --- */ |
221 | |
222 | static void stept_close(endpt *e) |
223 | { |
224 | stept *ee = (stept *)e; |
225 | |
0d3d364b |
226 | if (ee->e.f & EPF_PENDING) |
227 | conn_kill(&ee->c); |
228 | else { |
48bb1f76 |
229 | REFFD_DEC(ee->e.in); |
230 | REFFD_DEC(ee->e.out); |
231 | } |
232 | |
745cfee1 |
233 | xfree(ee->desc); |
48bb1f76 |
234 | fw_dec(); |
235 | DESTROY(ee); |
236 | } |
237 | |
0ac54f22 |
238 | /* --- @starget_connected@ --- * |
48bb1f76 |
239 | * |
240 | * Arguments: @int fd@ = file descriptor now ready for use |
241 | * @void *p@ = pointer to an endpoint structure |
242 | * |
243 | * Returns: --- |
244 | * |
245 | * Use: Handles successful connection of the target endpoint. |
246 | */ |
247 | |
0ac54f22 |
248 | void starget_connected(int fd, void *p) |
48bb1f76 |
249 | { |
250 | stept *e = p; |
251 | |
48bb1f76 |
252 | if (fd == -1) { |
253 | fw_log(-1, "[%s] connection failed: %s", e->desc, strerror(errno)); |
0d3d364b |
254 | endpt_kill(&e->e); |
48bb1f76 |
255 | } else { |
256 | reffd *r = reffd_init(fd); |
0ac54f22 |
257 | int opt = 1; |
48bb1f76 |
258 | REFFD_INC(r); |
0ac54f22 |
259 | fdflags(fd, O_NONBLOCK, O_NONBLOCK, FD_CLOEXEC, FD_CLOEXEC); |
260 | setsockopt(fd, SOL_SOCKET, SO_OOBINLINE, &opt, sizeof(opt)); |
48bb1f76 |
261 | e->e.in = e->e.out = r; |
0d3d364b |
262 | e->e.f &= ~EPF_PENDING; |
48bb1f76 |
263 | if (e->e.other) |
264 | endpt_join(&e->e, e->e.other); |
265 | } |
266 | } |
267 | |
268 | /* --- Socket endpoint definition --- */ |
269 | |
270 | static endpt_ops ssept_ops = { |
0fe44b09 |
271 | 0, 0, sept_wclose, ssept_close |
48bb1f76 |
272 | }; |
273 | |
274 | static endpt_ops stept_ops = { |
0fe44b09 |
275 | 0, 0, sept_wclose, stept_close |
48bb1f76 |
276 | }; |
277 | |
278 | /*----- Source definition -------------------------------------------------*/ |
279 | |
280 | /* --- @option@ --- */ |
281 | |
282 | static int ssource_option(source *s, scanner *sc) |
283 | { |
284 | ssource *ss = (ssource *)s; |
285 | ssource_opts *sso = ss ? &ss->o : &ssgo; |
286 | |
0ac54f22 |
287 | CONF_BEGIN(sc, "socket", "socket source") |
48bb1f76 |
288 | |
289 | /* --- Make sure the next token is a word --- */ |
290 | |
291 | if (sc->t != CTOK_WORD) |
292 | error(sc, "parse error, option keyword expected"); |
293 | |
294 | /* --- Handle options at this level --- */ |
295 | |
296 | if (strcmp(sc->d.buf, "conn") == 0) { |
297 | token(sc); |
298 | if (sc->t == '=') |
299 | token(sc); |
0fe44b09 |
300 | if (sc->t != CTOK_WORD) |
301 | error(sc, "parse error, expected `unlimited', `one-shot' or number"); |
302 | if (isdigit((unsigned char)sc->d.buf[0])) { |
303 | sso->conn = atoi(sc->d.buf); |
304 | if (sso->conn == 0) |
305 | error(sc, "argument of `conn' must be positive"); |
306 | sso->opt = SOCKOPT_LIMIT; |
307 | token(sc); |
308 | } else { |
309 | sso->conn = 0; |
310 | sso->opt = 1 + (1 & conf_enum(sc, |
311 | "unlimited,one-shot,infinite", |
312 | ENUM_ABBREV, "`conn' option")); |
313 | } |
48bb1f76 |
314 | CONF_ACCEPT; |
315 | } |
316 | |
745cfee1 |
317 | if (strcmp(sc->d.buf, "listen") == 0) { |
318 | token(sc); |
319 | if (sc->t == '=') |
320 | token(sc); |
321 | if (sc->t != CTOK_WORD || !isdigit((unsigned char)sc->d.buf[0])) |
322 | error(sc, "parse error, expected number"); |
323 | sso->listen = atoi(sc->d.buf); |
324 | if (sso->listen == 0) |
325 | error(sc, "argument of `listen' must be positive"); |
fed9ddde |
326 | token(sc); |
745cfee1 |
327 | CONF_ACCEPT; |
328 | } |
329 | |
48bb1f76 |
330 | if (strcmp(sc->d.buf, "logging") == 0 || |
331 | strcmp(sc->d.buf, "log") == 0) { |
0ac54f22 |
332 | addr_opts *ao = ss ? ss->ao : &gsao; |
48bb1f76 |
333 | token(sc); |
334 | if (sc->t == '=') |
335 | token(sc); |
336 | if (conf_enum(sc, "no,yes", ENUM_ABBREV, "logging status")) |
337 | ao->f &= ~ADDRF_NOLOG; |
338 | else |
339 | ao->f |= ADDRF_NOLOG; |
340 | CONF_ACCEPT; |
341 | } |
342 | |
343 | /* --- Pass the option around the various address types --- */ |
344 | |
345 | if (ss) { |
0ac54f22 |
346 | if (ss->a->ops->option && ss->a->ops->option(sc, ss->ao, ADDR_SRC)) |
48bb1f76 |
347 | CONF_ACCEPT; |
348 | } else { |
349 | addr_ops **a; |
350 | for (a = addrs; *a; a++) { |
0ac54f22 |
351 | if ((*a)->option && (*a)->option(sc, 0, ADDR_GLOBAL)) |
48bb1f76 |
352 | CONF_ACCEPT; |
353 | } |
354 | } |
355 | |
356 | /* --- Nobody understood the option --- */ |
357 | |
358 | CONF_END; |
359 | } |
360 | |
361 | /* --- @read@ --- */ |
362 | |
363 | static source *ssource_read(scanner *sc) |
364 | { |
365 | ssource *ss; |
366 | |
367 | (void)(conf_prefix(sc, "socket") || conf_prefix(sc, "sk")); |
368 | ss = CREATE(ssource); |
369 | ss->s.ops = &ssource_ops; |
370 | ss->s.desc = 0; |
371 | ss->t = 0; |
372 | ss->a = getaddr(sc, ADDR_SRC); |
0ac54f22 |
373 | if (ss->a->ops->initsrcopts) |
374 | ss->ao = ss->a->ops->initsrcopts(); |
48bb1f76 |
375 | else |
376 | ss->ao = CREATE(addr_opts); |
0ac54f22 |
377 | *ss->ao = gsao; |
48bb1f76 |
378 | ss->o = ssgo; |
379 | return (&ss->s); |
380 | } |
381 | |
382 | /* --- @ss_accept@ --- * |
383 | * |
384 | * Arguments: @int fd@ = file descriptor to accept from |
385 | * @unsigned mode@ = what's ready with the descriptor |
386 | * @void *p@ = pointer to the source definition |
387 | * |
388 | * Returns: --- |
389 | * |
390 | * Use: Accepts an incoming connection and attaches it to a target |
391 | * endpoint. |
392 | */ |
393 | |
0fe44b09 |
394 | static void ssource_destroy(source */*s*/); |
395 | |
48bb1f76 |
396 | static void ss_accept(int fd, unsigned mode, void *p) |
397 | { |
398 | ssource *ss = p; |
399 | ssept *e; |
400 | endpt *ee; |
401 | reffd *r; |
402 | |
403 | /* --- Make the file descriptor --- */ |
404 | |
405 | { |
406 | int opt = 1; |
407 | if ((r = ss->a->ops->accept(fd, ss->ao, ss->s.desc)) == 0) |
408 | return; |
409 | setsockopt(r->fd, SOL_SOCKET, SO_OOBINLINE, &opt, sizeof(opt)); |
410 | fdflags(r->fd, O_NONBLOCK, O_NONBLOCK, FD_CLOEXEC, FD_CLOEXEC); |
411 | } |
412 | |
413 | /* --- Make an endpoint --- */ |
414 | |
415 | e = CREATE(ssept); |
416 | e->e.ops = &ssept_ops; |
417 | e->e.other = 0; |
418 | e->e.f = EPF_FILE; |
419 | e->e.t = 0; |
420 | e->e.in = e->e.out = r; |
421 | e->s = ss; |
422 | REFFD_INC(r); |
423 | |
424 | /* --- Obtain the target endpoint and let rip --- */ |
425 | |
426 | if ((ee = ss->t->ops->create(ss->t, ss->s.desc)) == 0) { |
427 | REFFD_DEC(r); |
428 | REFFD_DEC(r); |
429 | DESTROY(e); |
430 | return; |
431 | } |
0fe44b09 |
432 | fw_inc(); |
48bb1f76 |
433 | |
434 | /* --- Remove the listening socket if necessary --- */ |
435 | |
0fe44b09 |
436 | switch (ss->o.opt) { |
437 | case SOCKOPT_LIMIT: |
438 | ss->o.conn--; |
439 | if (!ss->o.conn) { |
440 | if (!(ss->ao->f & ADDRF_NOLOG)) |
441 | fw_log(-1, "[%s] maximum connections reached", ss->s.desc); |
442 | sel_rmfile(&ss->r); |
443 | close(ss->r.fd); |
444 | if (ss->a->ops->unbind) |
445 | ss->a->ops->unbind(ss->a); |
446 | } |
447 | break; |
448 | case SOCKOPT_NOLIMIT: |
449 | break; |
450 | case SOCKOPT_ONESHOT: |
451 | sel_rmfile(&ss->r); |
452 | close(ss->r.fd); |
453 | if (ss->a->ops->unbind) |
454 | ss->a->ops->unbind(ss->a); |
455 | ssource_destroy(&ss->s); |
456 | break; |
48bb1f76 |
457 | } |
458 | |
459 | /* --- Let everything else happen --- */ |
460 | |
48bb1f76 |
461 | endpt_join(&e->e, ee); |
462 | } |
463 | |
464 | /* --- @ss_listen@ --- * |
465 | * |
466 | * Arguments: @ssource *ss@ = source to listen on |
467 | * |
468 | * Returns: --- |
469 | * |
470 | * Use: Sets the socket to listen again, if it stopped for some |
471 | * reason. This is a copy of the code in the @read@ function, |
472 | * because it has different (wildly different) error handling |
473 | * behaviour. |
474 | */ |
475 | |
48bb1f76 |
476 | static void ss_listen(ssource *ss) |
477 | { |
48bb1f76 |
478 | int fd; |
0ac54f22 |
479 | int opt = 1; |
48bb1f76 |
480 | |
0fe44b09 |
481 | if (!(ss->ao->f & ADDRF_NOLOG)) |
482 | fw_log(-1, "[%s] reattaching listener", ss->s.desc); |
48bb1f76 |
483 | |
484 | /* --- Make the socket --- */ |
485 | |
0ac54f22 |
486 | if ((fd = ss->a->ops->bind(ss->a, ss->ao)) < 0) { |
48bb1f76 |
487 | fw_log(-1, "[%s] couldn't create socket: %s", |
488 | ss->s.desc, strerror(errno)); |
489 | goto fail_0; |
490 | } |
491 | |
48bb1f76 |
492 | /* --- Set it to listen for connections --- */ |
493 | |
0ac54f22 |
494 | setsockopt(fd, SOL_SOCKET, SO_OOBINLINE, &opt, sizeof(opt)); |
495 | fdflags(fd, O_NONBLOCK, O_NONBLOCK, FD_CLOEXEC, FD_CLOEXEC); |
745cfee1 |
496 | if (listen(fd, ss->o.listen)) { |
48bb1f76 |
497 | fw_log(-1, "[%s] couldn't listen on socket: %s", |
498 | ss->s.desc, strerror(errno)); |
499 | goto fail_1; |
500 | } |
501 | |
502 | /* --- Set the listener up again --- */ |
503 | |
504 | ss->r.fd = fd; |
505 | sel_addfile(&ss->r); |
506 | return; |
507 | |
508 | /* --- Tidy up if it failed --- * |
509 | * |
510 | * I'll just remove the entire source. |
511 | */ |
512 | |
513 | fail_1: |
514 | close(fd); |
515 | fail_0: |
516 | ss->o.conn = 0; |
517 | ssource_destroy(&ss->s); |
518 | } |
519 | |
520 | /* --- @attach@ --- */ |
521 | |
522 | static void ssource_attach(source *s, scanner *sc, target *t) |
523 | { |
524 | ssource *ss = (ssource *)s; |
525 | int fd; |
0ac54f22 |
526 | int opt = 1; |
48bb1f76 |
527 | |
528 | ss->t = t; |
529 | |
530 | /* --- Initialize the description string --- */ |
531 | |
532 | { |
533 | dstr d = DSTR_INIT; |
534 | dstr_puts(&d, "socket."); |
535 | ss->a->ops->print(ss->a, ADDR_SRC, &d); |
536 | dstr_puts(&d, " -> "); |
537 | dstr_puts(&d, ss->t->desc); |
538 | ss->s.desc = xstrdup(d.buf); |
539 | dstr_destroy(&d); |
540 | } |
541 | |
ee599f55 |
542 | /* --- Confirm the address --- */ |
543 | |
544 | if (ss->a->ops->confirm) |
545 | ss->a->ops->confirm(ss->a, ADDR_SRC, ss->ao); |
546 | |
48bb1f76 |
547 | /* --- Initialize the socket for listening --- */ |
548 | |
0ac54f22 |
549 | if ((fd = ss->a->ops->bind(ss->a, ss->ao)) < 0) |
550 | error(sc, "couldn't bind socket `%s': %s", ss->s.desc, strerror(errno)); |
48bb1f76 |
551 | |
0ac54f22 |
552 | /* --- Set it to listen for connections --- */ |
48bb1f76 |
553 | |
0ac54f22 |
554 | setsockopt(fd, SOL_SOCKET, SO_OOBINLINE, &opt, sizeof(opt)); |
555 | fdflags(fd, O_NONBLOCK, O_NONBLOCK, FD_CLOEXEC, FD_CLOEXEC); |
556 | if (listen(fd, ss->o.listen)) { |
557 | error(sc, "couldn't listen on socket `%s': %s", |
558 | ss->s.desc, strerror(errno)); |
48bb1f76 |
559 | } |
560 | |
561 | /* --- We're ready to go now --- */ |
562 | |
563 | sel_initfile(sel, &ss->r, fd, SEL_READ, ss_accept, ss); |
564 | sel_addfile(&ss->r); |
565 | source_add(&ss->s); |
566 | fw_inc(); |
567 | } |
568 | |
569 | /* --- @destroy@ --- */ |
570 | |
571 | static void ssource_destroy(source *s) |
572 | { |
573 | ssource *ss = (ssource *)s; |
574 | |
14865057 |
575 | if (ss->o.conn || ss->o.opt != SOCKOPT_LIMIT) { |
48bb1f76 |
576 | sel_rmfile(&ss->r); |
577 | close(ss->r.fd); |
578 | if (ss->a->ops->unbind) |
579 | ss->a->ops->unbind(ss->a); |
580 | } |
0ac54f22 |
581 | if (ss->a->ops->freesrcopts) |
582 | ss->a->ops->freesrcopts(ss->ao); |
48bb1f76 |
583 | else |
584 | DESTROY(ss->ao); |
745cfee1 |
585 | xfree(ss->s.desc); |
48bb1f76 |
586 | ss->a->ops->destroy(ss->a); |
587 | ss->t->ops->destroy(ss->t); |
588 | source_remove(&ss->s); |
589 | DESTROY(ss); |
590 | fw_dec(); |
591 | } |
592 | |
593 | /* --- Source definition block --- */ |
594 | |
595 | source_ops ssource_ops = { |
596 | "socket", |
597 | ssource_option, ssource_read, ssource_attach, ssource_destroy |
598 | }; |
599 | |
600 | /*----- Target definition -------------------------------------------------*/ |
601 | |
0ac54f22 |
602 | /* --- @options@ --- */ |
603 | |
604 | static int starget_option(target *t, scanner *sc) |
605 | { |
606 | starget *st = (starget *)t; |
607 | |
608 | CONF_BEGIN(sc, "starget", "socket target") |
609 | |
610 | /* --- Pass the option around the various address types --- */ |
611 | |
612 | if (st) { |
613 | if (st->a->ops->option && st->a->ops->option(sc, st->ao, ADDR_DEST)) |
614 | CONF_ACCEPT; |
615 | } |
616 | /* We'd have done it already if it was global */ |
617 | |
618 | /* --- Done --- */ |
619 | |
620 | CONF_END; |
621 | } |
622 | |
48bb1f76 |
623 | /* --- @read@ --- */ |
624 | |
625 | static target *starget_read(scanner *sc) |
626 | { |
627 | starget *st; |
628 | dstr d = DSTR_INIT; |
629 | |
630 | (void)(conf_prefix(sc, "socket") || conf_prefix(sc, "sk")); |
631 | st = CREATE(starget); |
632 | st->t.ops = &starget_ops; |
633 | st->a = getaddr(sc, ADDR_DEST); |
0ac54f22 |
634 | if (st->a->ops->inittargopts) |
635 | st->ao = st->a->ops->inittargopts(); |
636 | else |
637 | st->ao = CREATE(addr_opts); |
638 | *st->ao = gtao; |
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 -------------------------------------------------*/ |