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1 | /* | |
2 | * sslproc.c: An interface to ssld | |
3 | * Copyright (C) 2007 Aaron Sethman <androsyn@ratbox.org> | |
4 | * Copyright (C) 2007 ircd-ratbox development team | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 | |
19 | * USA | |
20 | * | |
21 | * $Id$ | |
22 | */ | |
23 | ||
24 | #include <ratbox_lib.h> | |
25 | #include "stdinc.h" | |
26 | ||
27 | ||
28 | #include "s_conf.h" | |
29 | #include "logger.h" | |
30 | #include "listener.h" | |
31 | #include "sslproc.h" | |
32 | #include "s_serv.h" | |
33 | #include "ircd.h" | |
34 | #include "hash.h" | |
35 | #include "client.h" | |
36 | #include "send.h" | |
37 | #include "packet.h" | |
38 | ||
39 | #define ZIPSTATS_TIME 60 | |
40 | ||
41 | static void collect_zipstats(void *unused); | |
42 | static void ssl_read_ctl(rb_fde_t * F, void *data); | |
43 | static int ssld_count; | |
44 | ||
45 | static char tmpbuf[READBUF_SIZE]; | |
46 | static char nul = '\0'; | |
47 | ||
48 | #define MAXPASSFD 4 | |
49 | #define READSIZE 1024 | |
50 | typedef struct _ssl_ctl_buf | |
51 | { | |
52 | rb_dlink_node node; | |
53 | char *buf; | |
54 | size_t buflen; | |
55 | rb_fde_t *F[MAXPASSFD]; | |
56 | int nfds; | |
57 | } ssl_ctl_buf_t; | |
58 | ||
59 | ||
60 | struct _ssl_ctl | |
61 | { | |
62 | rb_dlink_node node; | |
63 | int cli_count; | |
64 | rb_fde_t *F; | |
65 | rb_fde_t *P; | |
66 | pid_t pid; | |
67 | rb_dlink_list readq; | |
68 | rb_dlink_list writeq; | |
69 | uint8_t dead; | |
70 | }; | |
71 | ||
72 | static void send_new_ssl_certs_one(ssl_ctl_t * ctl, const char *ssl_cert, | |
73 | const char *ssl_private_key, const char *ssl_dh_params); | |
74 | static void send_init_prng(ssl_ctl_t * ctl, prng_seed_t seedtype, const char *path); | |
75 | ||
76 | ||
77 | static rb_dlink_list ssl_daemons; | |
78 | ||
79 | static inline int32_t | |
80 | buf_to_int32(char *buf) | |
81 | { | |
82 | int32_t x; | |
83 | memcpy(&x, buf, sizeof(x)); | |
84 | return x; | |
85 | } | |
86 | ||
87 | static inline void | |
88 | int32_to_buf(char *buf, int32_t x) | |
89 | { | |
90 | memcpy(buf, &x, sizeof(x)); | |
91 | return; | |
92 | } | |
93 | ||
94 | ||
95 | static inline uint16_t | |
96 | buf_to_uint16(char *buf) | |
97 | { | |
98 | uint16_t x; | |
99 | memcpy(&x, buf, sizeof(x)); | |
100 | return x; | |
101 | } | |
102 | ||
103 | static inline void | |
104 | uint16_to_buf(char *buf, uint16_t x) | |
105 | { | |
106 | memcpy(buf, &x, sizeof(x)); | |
107 | return; | |
108 | } | |
109 | ||
110 | ||
111 | static ssl_ctl_t * | |
112 | allocate_ssl_daemon(rb_fde_t * F, rb_fde_t * P, int pid) | |
113 | { | |
114 | ssl_ctl_t *ctl; | |
115 | ||
116 | if(F == NULL || pid < 0) | |
117 | return NULL; | |
118 | ctl = rb_malloc(sizeof(ssl_ctl_t)); | |
119 | ctl->F = F; | |
120 | ctl->P = P; | |
121 | ctl->pid = pid; | |
122 | ssld_count++; | |
123 | rb_dlinkAdd(ctl, &ctl->node, &ssl_daemons); | |
124 | return ctl; | |
125 | } | |
126 | ||
127 | static void | |
128 | free_ssl_daemon(ssl_ctl_t * ctl) | |
129 | { | |
130 | rb_dlink_node *ptr; | |
131 | ssl_ctl_buf_t *ctl_buf; | |
132 | int x; | |
133 | if(ctl->cli_count) | |
134 | return; | |
135 | ||
136 | RB_DLINK_FOREACH(ptr, ctl->readq.head) | |
137 | { | |
138 | ctl_buf = ptr->data; | |
139 | for(x = 0; x < ctl_buf->nfds; x++) | |
140 | rb_close(ctl_buf->F[x]); | |
141 | ||
142 | rb_free(ctl_buf->buf); | |
143 | rb_free(ctl_buf); | |
144 | } | |
145 | ||
146 | RB_DLINK_FOREACH(ptr, ctl->writeq.head) | |
147 | { | |
148 | ctl_buf = ptr->data; | |
149 | for(x = 0; x < ctl_buf->nfds; x++) | |
150 | rb_close(ctl_buf->F[x]); | |
151 | ||
152 | rb_free(ctl_buf->buf); | |
153 | rb_free(ctl_buf); | |
154 | } | |
155 | rb_close(ctl->F); | |
156 | rb_close(ctl->P); | |
157 | rb_dlinkDelete(&ctl->node, &ssl_daemons); | |
158 | rb_free(ctl); | |
159 | } | |
160 | ||
161 | static char *ssld_path; | |
162 | ||
163 | static int ssld_spin_count = 0; | |
164 | static time_t last_spin; | |
165 | static int ssld_wait = 0; | |
166 | ||
167 | ||
168 | static void | |
169 | ssl_killall(void) | |
170 | { | |
171 | rb_dlink_node *ptr, *next; | |
172 | ssl_ctl_t *ctl; | |
173 | RB_DLINK_FOREACH_SAFE(ptr, next, ssl_daemons.head) | |
174 | { | |
175 | ctl = ptr->data; | |
176 | if(ctl->dead) | |
177 | continue; | |
178 | ctl->dead = 1; | |
179 | ssld_count--; | |
180 | rb_kill(ctl->pid, SIGKILL); | |
181 | } | |
182 | } | |
183 | ||
184 | static void | |
185 | ssl_dead(ssl_ctl_t * ctl) | |
186 | { | |
187 | if(ctl->dead) | |
188 | return; | |
189 | ||
190 | ctl->dead = 1; | |
191 | ssld_count--; | |
192 | rb_kill(ctl->pid, SIGKILL); /* make sure the process is really gone */ | |
193 | ilog(L_MAIN, "ssld helper died - attempting to restart"); | |
194 | sendto_realops_snomask(SNO_GENERAL, L_ALL, "ssld helper died - attempting to restart"); | |
195 | start_ssldaemon(1, ServerInfo.ssl_cert, ServerInfo.ssl_private_key, ServerInfo.ssl_dh_params); | |
196 | } | |
197 | ||
198 | static void | |
199 | ssl_do_pipe(rb_fde_t * F, void *data) | |
200 | { | |
201 | int retlen; | |
202 | ssl_ctl_t *ctl = data; | |
203 | retlen = rb_write(F, "0", 1); | |
204 | if(retlen == 0 || (retlen < 0 && !rb_ignore_errno(errno))) | |
205 | { | |
206 | ssl_dead(ctl); | |
207 | return; | |
208 | } | |
209 | rb_setselect(F, RB_SELECT_READ, ssl_do_pipe, data); | |
210 | } | |
211 | ||
212 | static void | |
213 | restart_ssld_event(void *unused) | |
214 | { | |
215 | ssld_spin_count = 0; | |
216 | last_spin = 0; | |
217 | ssld_wait = 0; | |
218 | if(ServerInfo.ssld_count > get_ssld_count()) | |
219 | { | |
220 | int start = ServerInfo.ssld_count - get_ssld_count(); | |
221 | ilog(L_MAIN, "Attempting to restart ssld processes"); | |
222 | sendto_realops_snomask(SNO_GENERAL, L_ALL, "Attempt to restart ssld processes"); | |
223 | start_ssldaemon(start, ServerInfo.ssl_cert, ServerInfo.ssl_private_key, ServerInfo.ssl_dh_params); | |
224 | } | |
225 | } | |
226 | ||
227 | int | |
228 | start_ssldaemon(int count, const char *ssl_cert, const char *ssl_private_key, const char *ssl_dh_params) | |
229 | { | |
230 | rb_fde_t *F1, *F2; | |
231 | rb_fde_t *P1, *P2; | |
232 | #ifdef _WIN32 | |
233 | const char *suffix = ".exe"; | |
234 | #else | |
235 | const char *suffix = ""; | |
236 | #endif | |
237 | ||
238 | char fullpath[PATH_MAX + 1]; | |
239 | char fdarg[6]; | |
240 | const char *parv[2]; | |
241 | char buf[128]; | |
242 | char s_pid[10]; | |
243 | pid_t pid; | |
244 | int started = 0, i; | |
245 | ||
246 | if(ssld_wait) | |
247 | return 0; | |
248 | ||
249 | if(ssld_spin_count > 20 && (rb_current_time() - last_spin < 5)) | |
250 | { | |
251 | ilog(L_MAIN, "ssld helper is spinning - will attempt to restart in 1 minute"); | |
252 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
253 | "ssld helper is spinning - will attempt to restart in 1 minute"); | |
254 | rb_event_add("restart_ssld_event", restart_ssld_event, NULL, 60); | |
255 | ssld_wait = 1; | |
256 | return 0; | |
257 | } | |
258 | ||
259 | ssld_spin_count++; | |
260 | last_spin = rb_current_time(); | |
261 | ||
262 | if(ssld_path == NULL) | |
263 | { | |
264 | rb_snprintf(fullpath, sizeof(fullpath), "%s/ssld%s", PKGLIBEXECDIR, suffix); | |
265 | ||
266 | if(access(fullpath, X_OK) == -1) | |
267 | { | |
268 | rb_snprintf(fullpath, sizeof(fullpath), "%s/bin/ssld%s", | |
269 | ConfigFileEntry.dpath, suffix); | |
270 | if(access(fullpath, X_OK) == -1) | |
271 | { | |
272 | ilog(L_MAIN, | |
273 | "Unable to execute ssld%s in %s or %s/bin", | |
274 | suffix, PKGLIBEXECDIR, ConfigFileEntry.dpath); | |
275 | return 0; | |
276 | } | |
277 | } | |
278 | ssld_path = rb_strdup(fullpath); | |
279 | } | |
280 | rb_strlcpy(buf, "-ircd ssld daemon helper", sizeof(buf)); | |
281 | parv[0] = buf; | |
282 | parv[1] = NULL; | |
283 | ||
284 | for(i = 0; i < count; i++) | |
285 | { | |
286 | ssl_ctl_t *ctl; | |
287 | if(rb_socketpair(AF_UNIX, SOCK_DGRAM, 0, &F1, &F2, "SSL/TLS handle passing socket") == -1) | |
288 | { | |
289 | ilog(L_MAIN, "Unable to create ssld - rb_socketpair failed: %s", strerror(errno)); | |
290 | return started; | |
291 | } | |
292 | ||
293 | rb_set_buffers(F1, READBUF_SIZE); | |
294 | rb_set_buffers(F2, READBUF_SIZE); | |
295 | rb_snprintf(fdarg, sizeof(fdarg), "%d", rb_get_fd(F2)); | |
296 | rb_setenv("CTL_FD", fdarg, 1); | |
297 | if(rb_pipe(&P1, &P2, "SSL/TLS pipe") == -1) | |
298 | { | |
299 | ilog(L_MAIN, "Unable to create ssld - rb_pipe failed: %s", strerror(errno)); | |
300 | return started; | |
301 | } | |
302 | rb_snprintf(fdarg, sizeof(fdarg), "%d", rb_get_fd(P1)); | |
303 | rb_setenv("CTL_PIPE", fdarg, 1); | |
304 | rb_snprintf(s_pid, sizeof(s_pid), "%d", (int)getpid()); | |
305 | rb_setenv("CTL_PPID", s_pid, 1); | |
306 | #ifdef _WIN32 | |
307 | SetHandleInformation((HANDLE) rb_get_fd(F2), HANDLE_FLAG_INHERIT, 1); | |
308 | SetHandleInformation((HANDLE) rb_get_fd(P1), HANDLE_FLAG_INHERIT, 1); | |
309 | #endif | |
310 | ||
311 | pid = rb_spawn_process(ssld_path, (const char **) parv); | |
312 | if(pid == -1) | |
313 | { | |
314 | ilog(L_MAIN, "Unable to create ssld: %s\n", strerror(errno)); | |
315 | rb_close(F1); | |
316 | rb_close(F2); | |
317 | rb_close(P1); | |
318 | rb_close(P2); | |
319 | return started; | |
320 | } | |
321 | started++; | |
322 | rb_close(F2); | |
323 | rb_close(P1); | |
324 | ctl = allocate_ssl_daemon(F1, P2, pid); | |
325 | if(ssl_ok) | |
326 | { | |
327 | if(ConfigFileEntry.use_egd && (ConfigFileEntry.egdpool_path != NULL)) | |
328 | send_init_prng(ctl, RB_PRNG_EGD, ConfigFileEntry.egdpool_path); | |
329 | else | |
330 | send_init_prng(ctl, RB_PRNG_DEFAULT, NULL); | |
331 | } | |
332 | if(ssl_ok && ssl_cert != NULL && ssl_private_key != NULL) | |
333 | send_new_ssl_certs_one(ctl, ssl_cert, ssl_private_key, | |
334 | ssl_dh_params != NULL ? ssl_dh_params : ""); | |
335 | ssl_read_ctl(ctl->F, ctl); | |
336 | ssl_do_pipe(P2, ctl); | |
337 | ||
338 | } | |
339 | return started; | |
340 | } | |
341 | ||
342 | static void | |
343 | ssl_process_zipstats(ssl_ctl_t * ctl, ssl_ctl_buf_t * ctl_buf) | |
344 | { | |
345 | struct Client *server; | |
346 | struct ZipStats *zips; | |
347 | int parc; | |
348 | char *parv[7]; | |
349 | parc = rb_string_to_array(ctl_buf->buf, parv, 6); | |
350 | server = find_server(NULL, parv[1]); | |
351 | if(server == NULL || server->localClient == NULL || !IsCapable(server, CAP_ZIP)) | |
352 | return; | |
353 | if(server->localClient->zipstats == NULL) | |
354 | server->localClient->zipstats = rb_malloc(sizeof(struct ZipStats)); | |
355 | ||
356 | zips = server->localClient->zipstats; | |
357 | ||
358 | zips->in += strtoull(parv[2], NULL, 10); | |
359 | zips->in_wire += strtoull(parv[3], NULL, 10); | |
360 | zips->out += strtoull(parv[4], NULL, 10); | |
361 | zips->out_wire += strtoull(parv[5], NULL, 10); | |
362 | ||
363 | if(zips->in > 0) | |
364 | zips->in_ratio = ((double) (zips->in - zips->in_wire) / (double) zips->in) * 100.00; | |
365 | else | |
366 | zips->in_ratio = 0; | |
367 | ||
368 | if(zips->out > 0) | |
369 | zips->out_ratio = ((double) (zips->out - zips->out_wire) / (double) zips->out) * 100.00; | |
370 | else | |
371 | zips->out_ratio = 0; | |
372 | } | |
373 | ||
374 | static void | |
375 | ssl_process_dead_fd(ssl_ctl_t * ctl, ssl_ctl_buf_t * ctl_buf) | |
376 | { | |
377 | struct Client *client_p; | |
378 | char reason[256]; | |
379 | int32_t fd; | |
380 | ||
381 | if(ctl_buf->buflen < 6) | |
382 | return; /* bogus message..drop it.. XXX should warn here */ | |
383 | ||
384 | fd = buf_to_int32(&ctl_buf->buf[1]); | |
385 | rb_strlcpy(reason, &ctl_buf->buf[5], sizeof(reason)); | |
386 | client_p = find_cli_fd_hash(fd); | |
387 | if(client_p == NULL) | |
388 | return; | |
389 | if(IsAnyServer(client_p) || IsRegistered(client_p)) | |
390 | { | |
391 | /* read any last moment ERROR, QUIT or the like -- jilles */ | |
392 | if (!strcmp(reason, "Remote host closed the connection")) | |
393 | read_packet(client_p->localClient->F, client_p); | |
394 | if (IsAnyDead(client_p)) | |
395 | return; | |
396 | } | |
397 | if(IsAnyServer(client_p)) | |
398 | { | |
399 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) && !IsServer(client_p) ? L_NETWIDE : L_ALL, "ssld error for %s: %s", client_p->name, reason); | |
400 | ilog(L_SERVER, "ssld error for %s: %s", log_client_name(client_p, SHOW_IP), reason); | |
401 | } | |
402 | exit_client(client_p, client_p, &me, reason); | |
403 | } | |
404 | ||
405 | static void | |
406 | ssl_process_certfp(ssl_ctl_t * ctl, ssl_ctl_buf_t * ctl_buf) | |
407 | { | |
408 | struct Client *client_p; | |
409 | int32_t fd; | |
410 | uint8_t *certfp; | |
411 | char *certfp_string; | |
412 | int i; | |
413 | ||
414 | if(ctl_buf->buflen != 5 + RB_SSL_CERTFP_LEN) | |
415 | return; /* bogus message..drop it.. XXX should warn here */ | |
416 | ||
417 | fd = buf_to_int32(&ctl_buf->buf[1]); | |
418 | certfp = (uint8_t *)&ctl_buf->buf[5]; | |
419 | client_p = find_cli_fd_hash(fd); | |
420 | if(client_p == NULL) | |
421 | return; | |
422 | rb_free(client_p->certfp); | |
423 | certfp_string = rb_malloc(RB_SSL_CERTFP_LEN * 2 + 1); | |
424 | for(i = 0; i < RB_SSL_CERTFP_LEN; i++) | |
425 | rb_snprintf(certfp_string + 2 * i, 3, "%02x", | |
426 | certfp[i]); | |
427 | client_p->certfp = certfp_string; | |
428 | } | |
429 | ||
430 | static void | |
431 | ssl_process_cmd_recv(ssl_ctl_t * ctl) | |
432 | { | |
433 | static const char *cannot_setup_ssl = "ssld cannot setup ssl, check your certificates and private key"; | |
434 | static const char *no_ssl_or_zlib = "ssld has neither SSL/TLS or zlib support killing all sslds"; | |
435 | rb_dlink_node *ptr, *next; | |
436 | ssl_ctl_buf_t *ctl_buf; | |
437 | if(ctl->dead) | |
438 | return; | |
439 | RB_DLINK_FOREACH_SAFE(ptr, next, ctl->readq.head) | |
440 | { | |
441 | ctl_buf = ptr->data; | |
442 | switch (*ctl_buf->buf) | |
443 | { | |
444 | case 'N': | |
445 | ssl_ok = 0; /* ssld says it can't do ssl/tls */ | |
446 | break; | |
447 | case 'D': | |
448 | ssl_process_dead_fd(ctl, ctl_buf); | |
449 | break; | |
450 | case 'F': | |
451 | ssl_process_certfp(ctl, ctl_buf); | |
452 | break; | |
453 | case 'S': | |
454 | ssl_process_zipstats(ctl, ctl_buf); | |
455 | break; | |
456 | case 'I': | |
457 | ssl_ok = 0; | |
458 | ilog(L_MAIN, "%s", cannot_setup_ssl); | |
459 | sendto_realops_snomask(SNO_GENERAL, L_ALL, "%s", cannot_setup_ssl); | |
460 | case 'U': | |
461 | zlib_ok = 0; | |
462 | ssl_ok = 0; | |
463 | ilog(L_MAIN, "%s", no_ssl_or_zlib); | |
464 | sendto_realops_snomask(SNO_GENERAL, L_ALL, "%s", no_ssl_or_zlib); | |
465 | ssl_killall(); | |
466 | break; | |
467 | case 'z': | |
468 | zlib_ok = 0; | |
469 | break; | |
470 | default: | |
471 | ilog(L_MAIN, "Received invalid command from ssld: %s", ctl_buf->buf); | |
472 | sendto_realops_snomask(SNO_GENERAL, L_ALL, "Received invalid command from ssld"); | |
473 | break; | |
474 | } | |
475 | rb_dlinkDelete(ptr, &ctl->readq); | |
476 | rb_free(ctl_buf->buf); | |
477 | rb_free(ctl_buf); | |
478 | } | |
479 | ||
480 | } | |
481 | ||
482 | ||
483 | static void | |
484 | ssl_read_ctl(rb_fde_t * F, void *data) | |
485 | { | |
486 | ssl_ctl_buf_t *ctl_buf; | |
487 | ssl_ctl_t *ctl = data; | |
488 | int retlen; | |
489 | ||
490 | if(ctl->dead) | |
491 | return; | |
492 | do | |
493 | { | |
494 | ctl_buf = rb_malloc(sizeof(ssl_ctl_buf_t)); | |
495 | ctl_buf->buf = rb_malloc(READSIZE); | |
496 | retlen = rb_recv_fd_buf(ctl->F, ctl_buf->buf, READSIZE, ctl_buf->F, 4); | |
497 | ctl_buf->buflen = retlen; | |
498 | if(retlen <= 0) | |
499 | { | |
500 | rb_free(ctl_buf->buf); | |
501 | rb_free(ctl_buf); | |
502 | } | |
503 | else | |
504 | rb_dlinkAddTail(ctl_buf, &ctl_buf->node, &ctl->readq); | |
505 | } | |
506 | while(retlen > 0); | |
507 | ||
508 | if(retlen == 0 || (retlen < 0 && !rb_ignore_errno(errno))) | |
509 | { | |
510 | ssl_dead(ctl); | |
511 | return; | |
512 | } | |
513 | ssl_process_cmd_recv(ctl); | |
514 | rb_setselect(ctl->F, RB_SELECT_READ, ssl_read_ctl, ctl); | |
515 | } | |
516 | ||
517 | static ssl_ctl_t * | |
518 | which_ssld(void) | |
519 | { | |
520 | ssl_ctl_t *ctl, *lowest = NULL; | |
521 | rb_dlink_node *ptr; | |
522 | ||
523 | RB_DLINK_FOREACH(ptr, ssl_daemons.head) | |
524 | { | |
525 | ctl = ptr->data; | |
526 | if(ctl->dead) | |
527 | continue; | |
528 | if(lowest == NULL) | |
529 | { | |
530 | lowest = ctl; | |
531 | continue; | |
532 | } | |
533 | if(ctl->cli_count < lowest->cli_count) | |
534 | lowest = ctl; | |
535 | } | |
536 | return (lowest); | |
537 | } | |
538 | ||
539 | static void | |
540 | ssl_write_ctl(rb_fde_t * F, void *data) | |
541 | { | |
542 | ssl_ctl_t *ctl = data; | |
543 | ssl_ctl_buf_t *ctl_buf; | |
544 | rb_dlink_node *ptr, *next; | |
545 | int retlen, x; | |
546 | ||
547 | if(ctl->dead) | |
548 | return; | |
549 | ||
550 | RB_DLINK_FOREACH_SAFE(ptr, next, ctl->writeq.head) | |
551 | { | |
552 | ctl_buf = ptr->data; | |
553 | /* in theory unix sock_dgram shouldn't ever short write this.. */ | |
554 | retlen = rb_send_fd_buf(ctl->F, ctl_buf->F, ctl_buf->nfds, ctl_buf->buf, ctl_buf->buflen, ctl->pid); | |
555 | if(retlen > 0) | |
556 | { | |
557 | rb_dlinkDelete(ptr, &ctl->writeq); | |
558 | for(x = 0; x < ctl_buf->nfds; x++) | |
559 | rb_close(ctl_buf->F[x]); | |
560 | rb_free(ctl_buf->buf); | |
561 | rb_free(ctl_buf); | |
562 | ||
563 | } | |
564 | if(retlen == 0 || (retlen < 0 && !rb_ignore_errno(errno))) | |
565 | { | |
566 | ssl_dead(ctl); | |
567 | return; | |
568 | } | |
569 | else | |
570 | { | |
571 | rb_setselect(ctl->F, RB_SELECT_WRITE, ssl_write_ctl, ctl); | |
572 | } | |
573 | } | |
574 | } | |
575 | ||
576 | static void | |
577 | ssl_cmd_write_queue(ssl_ctl_t * ctl, rb_fde_t ** F, int count, const void *buf, size_t buflen) | |
578 | { | |
579 | ssl_ctl_buf_t *ctl_buf; | |
580 | int x; | |
581 | ||
582 | /* don't bother */ | |
583 | if(ctl->dead) | |
584 | return; | |
585 | ||
586 | ctl_buf = rb_malloc(sizeof(ssl_ctl_buf_t)); | |
587 | ctl_buf->buf = rb_malloc(buflen); | |
588 | memcpy(ctl_buf->buf, buf, buflen); | |
589 | ctl_buf->buflen = buflen; | |
590 | ||
591 | for(x = 0; x < count && x < MAXPASSFD; x++) | |
592 | { | |
593 | ctl_buf->F[x] = F[x]; | |
594 | } | |
595 | ctl_buf->nfds = count; | |
596 | rb_dlinkAddTail(ctl_buf, &ctl_buf->node, &ctl->writeq); | |
597 | ssl_write_ctl(ctl->F, ctl); | |
598 | } | |
599 | ||
600 | ||
601 | static void | |
602 | send_new_ssl_certs_one(ssl_ctl_t * ctl, const char *ssl_cert, const char *ssl_private_key, const char *ssl_dh_params) | |
603 | { | |
604 | size_t len; | |
605 | ||
606 | len = strlen(ssl_cert) + strlen(ssl_private_key) + strlen(ssl_dh_params) + 5; | |
607 | if(len > sizeof(tmpbuf)) | |
608 | { | |
609 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
610 | "Parameters for send_new_ssl_certs_one too long (%zu > %zu) to pass to ssld, not sending...", | |
611 | len, sizeof(tmpbuf)); | |
612 | ilog(L_MAIN, | |
613 | "Parameters for send_new_ssl_certs_one too long (%zu > %zu) to pass to ssld, not sending...", | |
614 | len, sizeof(tmpbuf)); | |
615 | return; | |
616 | } | |
617 | len = rb_snprintf(tmpbuf, sizeof(tmpbuf), "K%c%s%c%s%c%s%c", nul, ssl_cert, nul, | |
618 | ssl_private_key, nul, ssl_dh_params, nul); | |
619 | ssl_cmd_write_queue(ctl, NULL, 0, tmpbuf, len); | |
620 | } | |
621 | ||
622 | static void | |
623 | send_init_prng(ssl_ctl_t * ctl, prng_seed_t seedtype, const char *path) | |
624 | { | |
625 | size_t len; | |
626 | const char *s; | |
627 | uint8_t seed = (uint8_t) seedtype; | |
628 | ||
629 | if(path == NULL) | |
630 | s = ""; | |
631 | else | |
632 | s = path; | |
633 | ||
634 | len = strlen(s) + 3; | |
635 | if(len > sizeof(tmpbuf)) | |
636 | { | |
637 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
638 | "Parameters for send_init_prng too long (%zd > %zd) to pass to ssld, not sending...", | |
639 | len, sizeof(tmpbuf)); | |
640 | ilog(L_MAIN, | |
641 | "Parameters for send_init_prng too long (%zd > %zd) to pass to ssld, not sending...", | |
642 | len, sizeof(tmpbuf)); | |
643 | return; | |
644 | ||
645 | } | |
646 | len = rb_snprintf(tmpbuf, sizeof(tmpbuf), "I%c%s%c", seed, s, nul); | |
647 | ssl_cmd_write_queue(ctl, NULL, 0, tmpbuf, len); | |
648 | } | |
649 | ||
650 | void | |
651 | send_new_ssl_certs(const char *ssl_cert, const char *ssl_private_key, const char *ssl_dh_params) | |
652 | { | |
653 | rb_dlink_node *ptr; | |
654 | if(ssl_cert == NULL || ssl_private_key == NULL || ssl_dh_params == NULL) | |
655 | { | |
656 | ssl_ok = 0; | |
657 | return; | |
658 | } | |
659 | RB_DLINK_FOREACH(ptr, ssl_daemons.head) | |
660 | { | |
661 | ssl_ctl_t *ctl = ptr->data; | |
662 | send_new_ssl_certs_one(ctl, ssl_cert, ssl_private_key, ssl_dh_params); | |
663 | } | |
664 | } | |
665 | ||
666 | ||
667 | ssl_ctl_t * | |
668 | start_ssld_accept(rb_fde_t * sslF, rb_fde_t * plainF, int32_t id) | |
669 | { | |
670 | rb_fde_t *F[2]; | |
671 | ssl_ctl_t *ctl; | |
672 | char buf[5]; | |
673 | F[0] = sslF; | |
674 | F[1] = plainF; | |
675 | ||
676 | buf[0] = 'A'; | |
677 | int32_to_buf(&buf[1], id); | |
678 | ctl = which_ssld(); | |
679 | ctl->cli_count++; | |
680 | ssl_cmd_write_queue(ctl, F, 2, buf, sizeof(buf)); | |
681 | return ctl; | |
682 | } | |
683 | ||
684 | ssl_ctl_t * | |
685 | start_ssld_connect(rb_fde_t * sslF, rb_fde_t * plainF, int32_t id) | |
686 | { | |
687 | rb_fde_t *F[2]; | |
688 | ssl_ctl_t *ctl; | |
689 | char buf[5]; | |
690 | F[0] = sslF; | |
691 | F[1] = plainF; | |
692 | ||
693 | buf[0] = 'C'; | |
694 | int32_to_buf(&buf[1], id); | |
695 | ||
696 | ctl = which_ssld(); | |
697 | ctl->cli_count++; | |
698 | ssl_cmd_write_queue(ctl, F, 2, buf, sizeof(buf)); | |
699 | return ctl; | |
700 | } | |
701 | ||
702 | void | |
703 | ssld_decrement_clicount(ssl_ctl_t * ctl) | |
704 | { | |
705 | if(ctl == NULL) | |
706 | return; | |
707 | ||
708 | ctl->cli_count--; | |
709 | if(ctl->dead && !ctl->cli_count) | |
710 | { | |
711 | free_ssl_daemon(ctl); | |
712 | } | |
713 | } | |
714 | ||
715 | /* | |
716 | * what we end up sending to the ssld process for ziplinks is the following | |
717 | * Z[ourfd][level][RECVQ] | |
718 | * Z = ziplinks command = buf[0] | |
719 | * ourfd = Our end of the socketpair = buf[1..4] | |
720 | * level = zip level buf[5] | |
721 | * recvqlen = our recvq len = buf[6-7] | |
722 | * recvq = any data we read prior to starting ziplinks | |
723 | */ | |
724 | void | |
725 | start_zlib_session(void *data) | |
726 | { | |
727 | struct Client *server = (struct Client *) data; | |
728 | uint16_t recvqlen; | |
729 | uint8_t level; | |
730 | void *xbuf; | |
731 | ||
732 | rb_fde_t *F[2]; | |
733 | rb_fde_t *xF1, *xF2; | |
734 | char *buf; | |
735 | char buf2[9]; | |
736 | void *recvq_start; | |
737 | ||
738 | size_t hdr = (sizeof(uint8_t) * 2) + sizeof(int32_t); | |
739 | size_t len; | |
740 | int cpylen, left; | |
741 | ||
742 | server->localClient->event = NULL; | |
743 | ||
744 | recvqlen = rb_linebuf_len(&server->localClient->buf_recvq); | |
745 | ||
746 | len = recvqlen + hdr; | |
747 | ||
748 | if(len > READBUF_SIZE) | |
749 | { | |
750 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
751 | "ssld - attempted to pass message of %zd len, max len %d, giving up", | |
752 | len, READBUF_SIZE); | |
753 | ilog(L_MAIN, "ssld - attempted to pass message of %zd len, max len %d, giving up", len, READBUF_SIZE); | |
754 | exit_client(server, server, server, "ssld readbuf exceeded"); | |
755 | return; | |
756 | } | |
757 | ||
758 | buf = rb_malloc(len); | |
759 | level = ConfigFileEntry.compression_level; | |
760 | ||
761 | int32_to_buf(&buf[1], rb_get_fd(server->localClient->F)); | |
762 | buf[5] = (char) level; | |
763 | ||
764 | recvq_start = &buf[6]; | |
765 | server->localClient->zipstats = rb_malloc(sizeof(struct ZipStats)); | |
766 | ||
767 | xbuf = recvq_start; | |
768 | left = recvqlen; | |
769 | ||
770 | do | |
771 | { | |
772 | cpylen = rb_linebuf_get(&server->localClient->buf_recvq, xbuf, left, LINEBUF_PARTIAL, LINEBUF_RAW); | |
773 | left -= cpylen; | |
774 | xbuf = (void *) (((uintptr_t) xbuf) + cpylen); | |
775 | } | |
776 | while(cpylen > 0); | |
777 | ||
778 | /* Pass the socket to ssld. */ | |
779 | *buf = 'Z'; | |
780 | if(rb_socketpair(AF_UNIX, SOCK_STREAM, 0, &xF1, &xF2, "Initial zlib socketpairs") == -1) | |
781 | { | |
782 | sendto_realops_snomask(SNO_GENERAL, L_ALL, "Error creating zlib socketpair - %s", strerror(errno)); | |
783 | ilog(L_MAIN, "Error creating zlib socketpairs - %s", strerror(errno)); | |
784 | exit_client(server, server, server, "Error creating zlib socketpair"); | |
785 | return; | |
786 | } | |
787 | ||
788 | if(IsSSL(server)) | |
789 | { | |
790 | /* tell ssld the new connid for the ssl part*/ | |
791 | buf2[0] = 'Y'; | |
792 | int32_to_buf(&buf2[1], rb_get_fd(server->localClient->F)); | |
793 | int32_to_buf(&buf2[5], rb_get_fd(xF2)); | |
794 | ssl_cmd_write_queue(server->localClient->ssl_ctl, NULL, 0, buf2, sizeof(buf2)); | |
795 | } | |
796 | ||
797 | ||
798 | F[0] = server->localClient->F; | |
799 | F[1] = xF1; | |
800 | del_from_cli_fd_hash(server); | |
801 | server->localClient->F = xF2; | |
802 | /* need to redo as what we did before isn't valid now */ | |
803 | int32_to_buf(&buf[1], rb_get_fd(server->localClient->F)); | |
804 | add_to_cli_fd_hash(server); | |
805 | ||
806 | server->localClient->z_ctl = which_ssld(); | |
807 | server->localClient->z_ctl->cli_count++; | |
808 | ssl_cmd_write_queue(server->localClient->z_ctl, F, 2, buf, len); | |
809 | rb_free(buf); | |
810 | } | |
811 | ||
812 | static void | |
813 | collect_zipstats(void *unused) | |
814 | { | |
815 | rb_dlink_node *ptr; | |
816 | struct Client *target_p; | |
817 | char buf[sizeof(uint8_t) + sizeof(int32_t) + HOSTLEN]; | |
818 | void *odata; | |
819 | size_t len; | |
820 | int32_t id; | |
821 | ||
822 | buf[0] = 'S'; | |
823 | odata = buf + sizeof(uint8_t) + sizeof(int32_t); | |
824 | ||
825 | RB_DLINK_FOREACH(ptr, serv_list.head) | |
826 | { | |
827 | target_p = ptr->data; | |
828 | if(IsCapable(target_p, CAP_ZIP)) | |
829 | { | |
830 | len = sizeof(uint8_t) + sizeof(uint32_t); | |
831 | ||
832 | id = rb_get_fd(target_p->localClient->F); | |
833 | int32_to_buf(&buf[1], rb_get_fd(target_p->localClient->F)); | |
834 | rb_strlcpy(odata, target_p->name, (sizeof(buf) - len)); | |
835 | len += strlen(odata) + 1; /* Get the \0 as well */ | |
836 | ssl_cmd_write_queue(target_p->localClient->z_ctl, NULL, 0, buf, len); | |
837 | } | |
838 | } | |
839 | } | |
840 | ||
841 | static void | |
842 | cleanup_dead_ssl(void *unused) | |
843 | { | |
844 | rb_dlink_node *ptr, *next; | |
845 | ssl_ctl_t *ctl; | |
846 | RB_DLINK_FOREACH_SAFE(ptr, next, ssl_daemons.head) | |
847 | { | |
848 | ctl = ptr->data; | |
849 | if(ctl->dead && !ctl->cli_count) | |
850 | { | |
851 | free_ssl_daemon(ctl); | |
852 | } | |
853 | } | |
854 | } | |
855 | ||
856 | int | |
857 | get_ssld_count(void) | |
858 | { | |
859 | return ssld_count; | |
860 | } | |
861 | ||
862 | void | |
863 | init_ssld(void) | |
864 | { | |
865 | rb_event_addish("collect_zipstats", collect_zipstats, NULL, ZIPSTATS_TIME); | |
866 | rb_event_addish("cleanup_dead_ssld", cleanup_dead_ssl, NULL, 1200); | |
867 | } |