2771f0146b7abacd62e9c2d3437d0fd6346043f3
[strongswan.git] / src / libcharon / plugins / stroke / stroke_socket.c
1 /*
2 * Copyright (C) 2011-2012 Tobias Brunner
3 * Copyright (C) 2008 Martin Willi
4 * Hochschule fuer Technik Rapperswil
5 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation; either version 2 of the License, or (at your
9 * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
10 *
11 * This program is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
13 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * for more details.
15 */
16
17 #include "stroke_socket.h"
18
19 #include <stdlib.h>
20 #include <sys/types.h>
21 #include <sys/stat.h>
22 #include <sys/socket.h>
23 #include <sys/un.h>
24 #include <unistd.h>
25 #include <errno.h>
26
27 #include <hydra.h>
28 #include <daemon.h>
29 #include <threading/mutex.h>
30 #include <threading/thread.h>
31 #include <threading/condvar.h>
32 #include <collections/linked_list.h>
33 #include <processing/jobs/callback_job.h>
34
35 #include "stroke_config.h"
36 #include "stroke_control.h"
37 #include "stroke_cred.h"
38 #include "stroke_ca.h"
39 #include "stroke_attribute.h"
40 #include "stroke_handler.h"
41 #include "stroke_list.h"
42 #include "stroke_counter.h"
43
44 /**
45 * To avoid clogging the thread pool with (blocking) jobs, we limit the number
46 * of concurrently handled stroke commands.
47 */
48 #define MAX_CONCURRENT_DEFAULT 4
49
50 typedef struct stroke_job_context_t stroke_job_context_t;
51 typedef struct private_stroke_socket_t private_stroke_socket_t;
52
53 /**
54 * private data of stroke_socket
55 */
56 struct private_stroke_socket_t {
57
58 /**
59 * public functions
60 */
61 stroke_socket_t public;
62
63 /**
64 * Unix socket to listen for strokes
65 */
66 int socket;
67
68 /**
69 * queued stroke commands
70 */
71 linked_list_t *commands;
72
73 /**
74 * lock for command list
75 */
76 mutex_t *mutex;
77
78 /**
79 * condvar to signal the arrival or completion of commands
80 */
81 condvar_t *condvar;
82
83 /**
84 * the number of currently handled commands
85 */
86 u_int handling;
87
88 /**
89 * the maximum number of concurrently handled commands
90 */
91 u_int max_concurrent;
92
93 /**
94 * configuration backend
95 */
96 stroke_config_t *config;
97
98 /**
99 * attribute provider
100 */
101 stroke_attribute_t *attribute;
102
103 /**
104 * attribute handler (requests only)
105 */
106 stroke_handler_t *handler;
107
108 /**
109 * controller to control daemon
110 */
111 stroke_control_t *control;
112
113 /**
114 * credential set
115 */
116 stroke_cred_t *cred;
117
118 /**
119 * CA sections
120 */
121 stroke_ca_t *ca;
122
123 /**
124 * status information logging
125 */
126 stroke_list_t *list;
127
128 /**
129 * Counter values for IKE events
130 */
131 stroke_counter_t *counter;
132 };
133
134 /**
135 * job context to pass to processing thread
136 */
137 struct stroke_job_context_t {
138
139 /**
140 * file descriptor to read from
141 */
142 int fd;
143
144 /**
145 * global stroke interface
146 */
147 private_stroke_socket_t *this;
148 };
149
150 /**
151 * Helper function which corrects the string pointers
152 * in a stroke_msg_t. Strings in a stroke_msg sent over "wire"
153 * contains RELATIVE addresses (relative to the beginning of the
154 * stroke_msg). They must be corrected if they reach our address
155 * space...
156 */
157 static void pop_string(stroke_msg_t *msg, char **string)
158 {
159 if (*string == NULL)
160 {
161 return;
162 }
163
164 /* check for sanity of string pointer and string */
165 if (string < (char**)msg ||
166 string > (char**)((char*)msg + sizeof(stroke_msg_t)) ||
167 (unsigned long)*string < (unsigned long)((char*)msg->buffer - (char*)msg) ||
168 (unsigned long)*string > msg->length)
169 {
170 *string = "(invalid pointer in stroke msg)";
171 }
172 else
173 {
174 *string = (char*)msg + (unsigned long)*string;
175 }
176 }
177
178 /**
179 * Pop the strings of a stroke_end_t struct and log them for debugging purposes
180 */
181 static void pop_end(stroke_msg_t *msg, const char* label, stroke_end_t *end)
182 {
183 pop_string(msg, &end->address);
184 pop_string(msg, &end->subnets);
185 pop_string(msg, &end->sourceip);
186 pop_string(msg, &end->dns);
187 pop_string(msg, &end->auth);
188 pop_string(msg, &end->auth2);
189 pop_string(msg, &end->id);
190 pop_string(msg, &end->id2);
191 pop_string(msg, &end->rsakey);
192 pop_string(msg, &end->cert);
193 pop_string(msg, &end->cert2);
194 pop_string(msg, &end->ca);
195 pop_string(msg, &end->ca2);
196 pop_string(msg, &end->groups);
197 pop_string(msg, &end->groups2);
198 pop_string(msg, &end->cert_policy);
199 pop_string(msg, &end->updown);
200
201 DBG2(DBG_CFG, " %s=%s", label, end->address);
202 DBG2(DBG_CFG, " %ssubnet=%s", label, end->subnets);
203 DBG2(DBG_CFG, " %ssourceip=%s", label, end->sourceip);
204 DBG2(DBG_CFG, " %sdns=%s", label, end->dns);
205 DBG2(DBG_CFG, " %sauth=%s", label, end->auth);
206 DBG2(DBG_CFG, " %sauth2=%s", label, end->auth2);
207 DBG2(DBG_CFG, " %sid=%s", label, end->id);
208 DBG2(DBG_CFG, " %sid2=%s", label, end->id2);
209 DBG2(DBG_CFG, " %srsakey=%s", label, end->rsakey);
210 DBG2(DBG_CFG, " %scert=%s", label, end->cert);
211 DBG2(DBG_CFG, " %scert2=%s", label, end->cert2);
212 DBG2(DBG_CFG, " %sca=%s", label, end->ca);
213 DBG2(DBG_CFG, " %sca2=%s", label, end->ca2);
214 DBG2(DBG_CFG, " %sgroups=%s", label, end->groups);
215 DBG2(DBG_CFG, " %sgroups2=%s", label, end->groups2);
216 DBG2(DBG_CFG, " %supdown=%s", label, end->updown);
217 }
218
219 /**
220 * Add a connection to the configuration list
221 */
222 static void stroke_add_conn(private_stroke_socket_t *this, stroke_msg_t *msg)
223 {
224 pop_string(msg, &msg->add_conn.name);
225 DBG1(DBG_CFG, "received stroke: add connection '%s'", msg->add_conn.name);
226
227 DBG2(DBG_CFG, "conn %s", msg->add_conn.name);
228 pop_end(msg, "left", &msg->add_conn.me);
229 pop_end(msg, "right", &msg->add_conn.other);
230 pop_string(msg, &msg->add_conn.eap_identity);
231 pop_string(msg, &msg->add_conn.aaa_identity);
232 pop_string(msg, &msg->add_conn.xauth_identity);
233 pop_string(msg, &msg->add_conn.algorithms.ike);
234 pop_string(msg, &msg->add_conn.algorithms.esp);
235 pop_string(msg, &msg->add_conn.ikeme.mediated_by);
236 pop_string(msg, &msg->add_conn.ikeme.peerid);
237 DBG2(DBG_CFG, " eap_identity=%s", msg->add_conn.eap_identity);
238 DBG2(DBG_CFG, " aaa_identity=%s", msg->add_conn.aaa_identity);
239 DBG2(DBG_CFG, " xauth_identity=%s", msg->add_conn.xauth_identity);
240 DBG2(DBG_CFG, " ike=%s", msg->add_conn.algorithms.ike);
241 DBG2(DBG_CFG, " esp=%s", msg->add_conn.algorithms.esp);
242 DBG2(DBG_CFG, " dpddelay=%d", msg->add_conn.dpd.delay);
243 DBG2(DBG_CFG, " dpdtimeout=%d", msg->add_conn.dpd.timeout);
244 DBG2(DBG_CFG, " dpdaction=%d", msg->add_conn.dpd.action);
245 DBG2(DBG_CFG, " closeaction=%d", msg->add_conn.close_action);
246 DBG2(DBG_CFG, " mediation=%s", msg->add_conn.ikeme.mediation ? "yes" : "no");
247 DBG2(DBG_CFG, " mediated_by=%s", msg->add_conn.ikeme.mediated_by);
248 DBG2(DBG_CFG, " me_peerid=%s", msg->add_conn.ikeme.peerid);
249 DBG2(DBG_CFG, " keyexchange=ikev%u", msg->add_conn.version);
250
251 this->config->add(this->config, msg);
252 this->attribute->add_dns(this->attribute, msg);
253 this->handler->add_attributes(this->handler, msg);
254 }
255
256 /**
257 * Delete a connection from the list
258 */
259 static void stroke_del_conn(private_stroke_socket_t *this, stroke_msg_t *msg)
260 {
261 pop_string(msg, &msg->del_conn.name);
262 DBG1(DBG_CFG, "received stroke: delete connection '%s'", msg->del_conn.name);
263
264 this->config->del(this->config, msg);
265 this->attribute->del_dns(this->attribute, msg);
266 this->handler->del_attributes(this->handler, msg);
267 }
268
269 /**
270 * initiate a connection by name
271 */
272 static void stroke_initiate(private_stroke_socket_t *this, stroke_msg_t *msg, FILE *out)
273 {
274 pop_string(msg, &msg->initiate.name);
275 DBG1(DBG_CFG, "received stroke: initiate '%s'", msg->initiate.name);
276
277 this->control->initiate(this->control, msg, out);
278 }
279
280 /**
281 * terminate a connection by name
282 */
283 static void stroke_terminate(private_stroke_socket_t *this, stroke_msg_t *msg, FILE *out)
284 {
285 pop_string(msg, &msg->terminate.name);
286 DBG1(DBG_CFG, "received stroke: terminate '%s'", msg->terminate.name);
287
288 this->control->terminate(this->control, msg, out);
289 }
290
291 /**
292 * terminate a connection by peers virtual IP
293 */
294 static void stroke_terminate_srcip(private_stroke_socket_t *this,
295 stroke_msg_t *msg, FILE *out)
296 {
297 pop_string(msg, &msg->terminate_srcip.start);
298 pop_string(msg, &msg->terminate_srcip.end);
299 DBG1(DBG_CFG, "received stroke: terminate-srcip %s-%s",
300 msg->terminate_srcip.start, msg->terminate_srcip.end);
301
302 this->control->terminate_srcip(this->control, msg, out);
303 }
304
305 /**
306 * rekey a connection by name/id
307 */
308 static void stroke_rekey(private_stroke_socket_t *this, stroke_msg_t *msg, FILE *out)
309 {
310 pop_string(msg, &msg->terminate.name);
311 DBG1(DBG_CFG, "received stroke: rekey '%s'", msg->rekey.name);
312
313 this->control->rekey(this->control, msg, out);
314 }
315
316 /**
317 * route a policy (install SPD entries)
318 */
319 static void stroke_route(private_stroke_socket_t *this, stroke_msg_t *msg, FILE *out)
320 {
321 pop_string(msg, &msg->route.name);
322 DBG1(DBG_CFG, "received stroke: route '%s'", msg->route.name);
323
324 this->control->route(this->control, msg, out);
325 }
326
327 /**
328 * unroute a policy
329 */
330 static void stroke_unroute(private_stroke_socket_t *this, stroke_msg_t *msg, FILE *out)
331 {
332 pop_string(msg, &msg->terminate.name);
333 DBG1(DBG_CFG, "received stroke: unroute '%s'", msg->route.name);
334
335 this->control->unroute(this->control, msg, out);
336 }
337
338 /**
339 * Add a ca information record to the cainfo list
340 */
341 static void stroke_add_ca(private_stroke_socket_t *this,
342 stroke_msg_t *msg, FILE *out)
343 {
344 pop_string(msg, &msg->add_ca.name);
345 DBG1(DBG_CFG, "received stroke: add ca '%s'", msg->add_ca.name);
346
347 pop_string(msg, &msg->add_ca.cacert);
348 pop_string(msg, &msg->add_ca.crluri);
349 pop_string(msg, &msg->add_ca.crluri2);
350 pop_string(msg, &msg->add_ca.ocspuri);
351 pop_string(msg, &msg->add_ca.ocspuri2);
352 pop_string(msg, &msg->add_ca.certuribase);
353 DBG2(DBG_CFG, "ca %s", msg->add_ca.name);
354 DBG2(DBG_CFG, " cacert=%s", msg->add_ca.cacert);
355 DBG2(DBG_CFG, " crluri=%s", msg->add_ca.crluri);
356 DBG2(DBG_CFG, " crluri2=%s", msg->add_ca.crluri2);
357 DBG2(DBG_CFG, " ocspuri=%s", msg->add_ca.ocspuri);
358 DBG2(DBG_CFG, " ocspuri2=%s", msg->add_ca.ocspuri2);
359 DBG2(DBG_CFG, " certuribase=%s", msg->add_ca.certuribase);
360
361 this->ca->add(this->ca, msg);
362 }
363
364 /**
365 * Delete a ca information record from the cainfo list
366 */
367 static void stroke_del_ca(private_stroke_socket_t *this,
368 stroke_msg_t *msg, FILE *out)
369 {
370 pop_string(msg, &msg->del_ca.name);
371 DBG1(DBG_CFG, "received stroke: delete ca '%s'", msg->del_ca.name);
372
373 this->ca->del(this->ca, msg);
374 }
375
376
377 /**
378 * show status of daemon
379 */
380 static void stroke_status(private_stroke_socket_t *this,
381 stroke_msg_t *msg, FILE *out, bool all, bool wait)
382 {
383 pop_string(msg, &(msg->status.name));
384
385 this->list->status(this->list, msg, out, all, wait);
386 }
387
388 /**
389 * list various information
390 */
391 static void stroke_list(private_stroke_socket_t *this, stroke_msg_t *msg, FILE *out)
392 {
393 if (msg->list.flags & LIST_CAINFOS)
394 {
395 this->ca->list(this->ca, msg, out);
396 }
397 this->list->list(this->list, msg, out);
398 if (msg->list.flags & LIST_COUNTERS)
399 {
400 this->counter->print(this->counter, out);
401 }
402 }
403
404 /**
405 * reread various information
406 */
407 static void stroke_reread(private_stroke_socket_t *this,
408 stroke_msg_t *msg, FILE *out)
409 {
410 this->cred->reread(this->cred, msg, out);
411 }
412
413 /**
414 * purge various information
415 */
416 static void stroke_purge(private_stroke_socket_t *this,
417 stroke_msg_t *msg, FILE *out)
418 {
419 if (msg->purge.flags & PURGE_OCSP)
420 {
421 lib->credmgr->flush_cache(lib->credmgr, CERT_X509_OCSP_RESPONSE);
422 }
423 if (msg->purge.flags & PURGE_CRLS)
424 {
425 lib->credmgr->flush_cache(lib->credmgr, CERT_X509_CRL);
426 }
427 if (msg->purge.flags & PURGE_CERTS)
428 {
429 lib->credmgr->flush_cache(lib->credmgr, CERT_X509);
430 }
431 if (msg->purge.flags & PURGE_IKE)
432 {
433 this->control->purge_ike(this->control, msg, out);
434 }
435 }
436
437 /**
438 * Export in-memory credentials
439 */
440 static void stroke_export(private_stroke_socket_t *this,
441 stroke_msg_t *msg, FILE *out)
442 {
443 pop_string(msg, &msg->export.selector);
444
445 if (msg->export.flags & EXPORT_X509)
446 {
447 enumerator_t *enumerator;
448 identification_t *id;
449 certificate_t *cert;
450 chunk_t encoded;
451
452 id = identification_create_from_string(msg->export.selector);
453 enumerator = lib->credmgr->create_cert_enumerator(lib->credmgr,
454 CERT_X509, KEY_ANY, id, FALSE);
455 while (enumerator->enumerate(enumerator, &cert))
456 {
457 if (cert->get_encoding(cert, CERT_PEM, &encoded))
458 {
459 fprintf(out, "%.*s", (int)encoded.len, encoded.ptr);
460 free(encoded.ptr);
461 }
462 }
463 enumerator->destroy(enumerator);
464 id->destroy(id);
465 }
466 }
467
468 /**
469 * list pool leases
470 */
471 static void stroke_leases(private_stroke_socket_t *this,
472 stroke_msg_t *msg, FILE *out)
473 {
474 pop_string(msg, &msg->leases.pool);
475 pop_string(msg, &msg->leases.address);
476
477 this->list->leases(this->list, msg, out);
478 }
479
480 /**
481 * Show memory usage
482 */
483 static void stroke_memusage(private_stroke_socket_t *this,
484 stroke_msg_t *msg, FILE *out)
485 {
486 if (lib->leak_detective)
487 {
488 lib->leak_detective->usage(lib->leak_detective, out);
489 }
490 }
491
492 /**
493 * Set username and password for a connection
494 */
495 static void stroke_user_creds(private_stroke_socket_t *this,
496 stroke_msg_t *msg, FILE *out)
497 {
498 pop_string(msg, &msg->user_creds.name);
499 pop_string(msg, &msg->user_creds.username);
500 pop_string(msg, &msg->user_creds.password);
501
502 DBG1(DBG_CFG, "received stroke: user-creds '%s'", msg->user_creds.name);
503
504 this->config->set_user_credentials(this->config, msg, out);
505 }
506
507 /**
508 * set the verbosity debug output
509 */
510 static void stroke_loglevel(private_stroke_socket_t *this,
511 stroke_msg_t *msg, FILE *out)
512 {
513 debug_t group;
514
515 pop_string(msg, &(msg->loglevel.type));
516 DBG1(DBG_CFG, "received stroke: loglevel %d for %s",
517 msg->loglevel.level, msg->loglevel.type);
518
519 group = enum_from_name(debug_names, msg->loglevel.type);
520 if ((int)group < 0)
521 {
522 fprintf(out, "invalid type (%s)!\n", msg->loglevel.type);
523 return;
524 }
525 charon->set_level(charon, group, msg->loglevel.level);
526 }
527
528 /**
529 * set various config options
530 */
531 static void stroke_config(private_stroke_socket_t *this,
532 stroke_msg_t *msg, FILE *out)
533 {
534 this->cred->cachecrl(this->cred, msg->config.cachecrl);
535 }
536
537 /**
538 * destroy a job context
539 */
540 static void stroke_job_context_destroy(stroke_job_context_t *this)
541 {
542 if (this->fd)
543 {
544 close(this->fd);
545 }
546 free(this);
547 }
548
549 /**
550 * called to signal the completion of a command
551 */
552 static inline job_requeue_t job_processed(private_stroke_socket_t *this)
553 {
554 this->mutex->lock(this->mutex);
555 this->handling--;
556 this->condvar->signal(this->condvar);
557 this->mutex->unlock(this->mutex);
558 return JOB_REQUEUE_NONE;
559 }
560
561 /**
562 * process a stroke request from the socket pointed by "fd"
563 */
564 static job_requeue_t process(stroke_job_context_t *ctx)
565 {
566 stroke_msg_t *msg;
567 u_int16_t msg_length;
568 ssize_t bytes_read;
569 FILE *out;
570 private_stroke_socket_t *this = ctx->this;
571 int strokefd = ctx->fd;
572
573 /* peek the length */
574 bytes_read = recv(strokefd, &msg_length, sizeof(msg_length), MSG_PEEK);
575 if (bytes_read != sizeof(msg_length))
576 {
577 DBG1(DBG_CFG, "reading length of stroke message failed: %s",
578 strerror(errno));
579 return job_processed(this);
580 }
581
582 /* read message */
583 msg = alloca(msg_length);
584 bytes_read = recv(strokefd, msg, msg_length, 0);
585 if (bytes_read != msg_length)
586 {
587 DBG1(DBG_CFG, "reading stroke message failed: %s", strerror(errno));
588 return job_processed(this);
589 }
590
591 out = fdopen(strokefd, "w+");
592 if (out == NULL)
593 {
594 DBG1(DBG_CFG, "opening stroke output channel failed: %s", strerror(errno));
595 return job_processed(this);
596 }
597
598 DBG3(DBG_CFG, "stroke message %b", (void*)msg, msg_length);
599
600 switch (msg->type)
601 {
602 case STR_INITIATE:
603 stroke_initiate(this, msg, out);
604 break;
605 case STR_ROUTE:
606 stroke_route(this, msg, out);
607 break;
608 case STR_UNROUTE:
609 stroke_unroute(this, msg, out);
610 break;
611 case STR_TERMINATE:
612 stroke_terminate(this, msg, out);
613 break;
614 case STR_TERMINATE_SRCIP:
615 stroke_terminate_srcip(this, msg, out);
616 break;
617 case STR_REKEY:
618 stroke_rekey(this, msg, out);
619 break;
620 case STR_STATUS:
621 stroke_status(this, msg, out, FALSE, TRUE);
622 break;
623 case STR_STATUS_ALL:
624 stroke_status(this, msg, out, TRUE, TRUE);
625 break;
626 case STR_STATUS_ALL_NOBLK:
627 stroke_status(this, msg, out, TRUE, FALSE);
628 break;
629 case STR_ADD_CONN:
630 stroke_add_conn(this, msg);
631 break;
632 case STR_DEL_CONN:
633 stroke_del_conn(this, msg);
634 break;
635 case STR_ADD_CA:
636 stroke_add_ca(this, msg, out);
637 break;
638 case STR_DEL_CA:
639 stroke_del_ca(this, msg, out);
640 break;
641 case STR_LOGLEVEL:
642 stroke_loglevel(this, msg, out);
643 break;
644 case STR_CONFIG:
645 stroke_config(this, msg, out);
646 break;
647 case STR_LIST:
648 stroke_list(this, msg, out);
649 break;
650 case STR_REREAD:
651 stroke_reread(this, msg, out);
652 break;
653 case STR_PURGE:
654 stroke_purge(this, msg, out);
655 break;
656 case STR_EXPORT:
657 stroke_export(this, msg, out);
658 break;
659 case STR_LEASES:
660 stroke_leases(this, msg, out);
661 break;
662 case STR_MEMUSAGE:
663 stroke_memusage(this, msg, out);
664 break;
665 case STR_USER_CREDS:
666 stroke_user_creds(this, msg, out);
667 break;
668 default:
669 DBG1(DBG_CFG, "received unknown stroke");
670 break;
671 }
672 fclose(out);
673 /* fclose() closes underlying FD */
674 ctx->fd = 0;
675 return job_processed(this);
676 }
677
678 /**
679 * Handle queued stroke commands
680 */
681 static job_requeue_t handle(private_stroke_socket_t *this)
682 {
683 stroke_job_context_t *ctx;
684 callback_job_t *job;
685 bool oldstate;
686
687 this->mutex->lock(this->mutex);
688 thread_cleanup_push((thread_cleanup_t)this->mutex->unlock, this->mutex);
689 oldstate = thread_cancelability(TRUE);
690 while (this->commands->get_count(this->commands) == 0 ||
691 this->handling >= this->max_concurrent)
692 {
693 this->condvar->wait(this->condvar, this->mutex);
694 }
695 thread_cancelability(oldstate);
696 this->commands->remove_first(this->commands, (void**)&ctx);
697 this->handling++;
698 thread_cleanup_pop(TRUE);
699 job = callback_job_create_with_prio((callback_job_cb_t)process, ctx,
700 (void*)stroke_job_context_destroy, NULL, JOB_PRIO_HIGH);
701 lib->processor->queue_job(lib->processor, (job_t*)job);
702 return JOB_REQUEUE_DIRECT;
703 }
704
705 /**
706 * Accept stroke commands and queue them to be handled
707 */
708 static job_requeue_t receive(private_stroke_socket_t *this)
709 {
710 struct sockaddr_un strokeaddr;
711 int strokeaddrlen = sizeof(strokeaddr);
712 int strokefd;
713 bool oldstate;
714 stroke_job_context_t *ctx;
715
716 oldstate = thread_cancelability(TRUE);
717 strokefd = accept(this->socket, (struct sockaddr *)&strokeaddr, &strokeaddrlen);
718 thread_cancelability(oldstate);
719
720 if (strokefd < 0)
721 {
722 DBG1(DBG_CFG, "accepting stroke connection failed: %s", strerror(errno));
723 return JOB_REQUEUE_FAIR;
724 }
725
726 INIT(ctx,
727 .fd = strokefd,
728 .this = this,
729 );
730 this->mutex->lock(this->mutex);
731 this->commands->insert_last(this->commands, ctx);
732 this->condvar->signal(this->condvar);
733 this->mutex->unlock(this->mutex);
734
735 return JOB_REQUEUE_FAIR;
736 }
737
738 /**
739 * initialize and open stroke socket
740 */
741 static bool open_socket(private_stroke_socket_t *this)
742 {
743 struct sockaddr_un socket_addr;
744 mode_t old;
745
746 socket_addr.sun_family = AF_UNIX;
747 strcpy(socket_addr.sun_path, STROKE_SOCKET);
748
749 /* set up unix socket */
750 this->socket = socket(AF_UNIX, SOCK_STREAM, 0);
751 if (this->socket == -1)
752 {
753 DBG1(DBG_CFG, "could not create stroke socket");
754 return FALSE;
755 }
756
757 unlink(socket_addr.sun_path);
758 old = umask(~(S_IRWXU | S_IRWXG));
759 if (bind(this->socket, (struct sockaddr *)&socket_addr, sizeof(socket_addr)) < 0)
760 {
761 DBG1(DBG_CFG, "could not bind stroke socket: %s", strerror(errno));
762 close(this->socket);
763 return FALSE;
764 }
765 umask(old);
766 if (chown(socket_addr.sun_path, charon->caps->get_uid(charon->caps),
767 charon->caps->get_gid(charon->caps)) != 0)
768 {
769 DBG1(DBG_CFG, "changing stroke socket permissions failed: %s",
770 strerror(errno));
771 }
772
773 if (listen(this->socket, 10) < 0)
774 {
775 DBG1(DBG_CFG, "could not listen on stroke socket: %s", strerror(errno));
776 close(this->socket);
777 unlink(socket_addr.sun_path);
778 return FALSE;
779 }
780 return TRUE;
781 }
782
783 METHOD(stroke_socket_t, destroy, void,
784 private_stroke_socket_t *this)
785 {
786 this->commands->destroy_function(this->commands, (void*)stroke_job_context_destroy);
787 this->condvar->destroy(this->condvar);
788 this->mutex->destroy(this->mutex);
789 lib->credmgr->remove_set(lib->credmgr, &this->ca->set);
790 lib->credmgr->remove_set(lib->credmgr, &this->cred->set);
791 charon->backends->remove_backend(charon->backends, &this->config->backend);
792 hydra->attributes->remove_provider(hydra->attributes, &this->attribute->provider);
793 hydra->attributes->remove_handler(hydra->attributes, &this->handler->handler);
794 charon->bus->remove_listener(charon->bus, &this->counter->listener);
795 this->cred->destroy(this->cred);
796 this->ca->destroy(this->ca);
797 this->config->destroy(this->config);
798 this->attribute->destroy(this->attribute);
799 this->handler->destroy(this->handler);
800 this->control->destroy(this->control);
801 this->list->destroy(this->list);
802 this->counter->destroy(this->counter);
803 free(this);
804 }
805
806 /*
807 * see header file
808 */
809 stroke_socket_t *stroke_socket_create()
810 {
811 private_stroke_socket_t *this;
812
813 INIT(this,
814 .public = {
815 .destroy = _destroy,
816 },
817 );
818
819 if (!open_socket(this))
820 {
821 free(this);
822 return NULL;
823 }
824
825 this->cred = stroke_cred_create();
826 this->attribute = stroke_attribute_create();
827 this->handler = stroke_handler_create();
828 this->ca = stroke_ca_create(this->cred);
829 this->config = stroke_config_create(this->ca, this->cred, this->attribute);
830 this->control = stroke_control_create();
831 this->list = stroke_list_create(this->attribute);
832 this->counter = stroke_counter_create();
833
834 this->mutex = mutex_create(MUTEX_TYPE_DEFAULT);
835 this->condvar = condvar_create(CONDVAR_TYPE_DEFAULT);
836 this->commands = linked_list_create();
837 this->max_concurrent = lib->settings->get_int(lib->settings,
838 "%s.plugins.stroke.max_concurrent", MAX_CONCURRENT_DEFAULT,
839 charon->name);
840
841 lib->credmgr->add_set(lib->credmgr, &this->ca->set);
842 lib->credmgr->add_set(lib->credmgr, &this->cred->set);
843 charon->backends->add_backend(charon->backends, &this->config->backend);
844 hydra->attributes->add_provider(hydra->attributes, &this->attribute->provider);
845 hydra->attributes->add_handler(hydra->attributes, &this->handler->handler);
846 charon->bus->add_listener(charon->bus, &this->counter->listener);
847
848 lib->processor->queue_job(lib->processor,
849 (job_t*)callback_job_create_with_prio((callback_job_cb_t)receive, this,
850 NULL, (callback_job_cancel_t)return_false, JOB_PRIO_CRITICAL));
851
852 lib->processor->queue_job(lib->processor,
853 (job_t*)callback_job_create_with_prio((callback_job_cb_t)handle, this,
854 NULL, (callback_job_cancel_t)return_false, JOB_PRIO_CRITICAL));
855
856 return &this->public;
857 }
858