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Commit | Line | Data |
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f8451915 AC |
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 | |
f8451915 AC |
20 | */ |
21 | ||
fe037171 | 22 | #include <rb_lib.h> |
f8451915 | 23 | #include "stdinc.h" |
3202e249 VY |
24 | |
25 | ||
f8451915 AC |
26 | #include "s_conf.h" |
27 | #include "logger.h" | |
28 | #include "listener.h" | |
29 | #include "sslproc.h" | |
30 | #include "s_serv.h" | |
31 | #include "ircd.h" | |
32 | #include "hash.h" | |
33 | #include "client.h" | |
34 | #include "send.h" | |
35 | #include "packet.h" | |
36 | ||
37 | #define ZIPSTATS_TIME 60 | |
38 | ||
39 | static void collect_zipstats(void *unused); | |
3202e249 | 40 | static void ssl_read_ctl(rb_fde_t * F, void *data); |
f8451915 AC |
41 | static int ssld_count; |
42 | ||
3202e249 | 43 | static char tmpbuf[READBUF_SIZE]; |
f8451915 AC |
44 | static char nul = '\0'; |
45 | ||
46 | #define MAXPASSFD 4 | |
47 | #define READSIZE 1024 | |
48 | typedef struct _ssl_ctl_buf | |
49 | { | |
50 | rb_dlink_node node; | |
51 | char *buf; | |
52 | size_t buflen; | |
53 | rb_fde_t *F[MAXPASSFD]; | |
54 | int nfds; | |
55 | } ssl_ctl_buf_t; | |
56 | ||
57 | ||
58 | struct _ssl_ctl | |
59 | { | |
60 | rb_dlink_node node; | |
61 | int cli_count; | |
62 | rb_fde_t *F; | |
63 | rb_fde_t *P; | |
64 | pid_t pid; | |
65 | rb_dlink_list readq; | |
66 | rb_dlink_list writeq; | |
eb1b303d | 67 | uint8_t shutdown; |
0862e335 | 68 | uint8_t dead; |
e9ffc3c1 | 69 | char version[256]; |
f8451915 AC |
70 | }; |
71 | ||
93ad89b2 | 72 | static void ssld_update_config_one(ssl_ctl_t *ctl); |
f7b0c4b3 | 73 | static void send_new_ssl_certs_one(ssl_ctl_t * ctl); |
93ad89b2 | 74 | static void send_certfp_method(ssl_ctl_t *ctl); |
f8451915 AC |
75 | |
76 | ||
77 | static rb_dlink_list ssl_daemons; | |
78 | ||
196740c4 AC |
79 | static inline uint32_t |
80 | buf_to_uint32(char *buf) | |
f8451915 | 81 | { |
196740c4 | 82 | uint32_t x; |
0862e335 | 83 | memcpy(&x, buf, sizeof(x)); |
f8451915 AC |
84 | return x; |
85 | } | |
86 | ||
3202e249 | 87 | static inline void |
196740c4 | 88 | uint32_to_buf(char *buf, uint32_t x) |
f8451915 | 89 | { |
0862e335 | 90 | memcpy(buf, &x, sizeof(x)); |
f8451915 AC |
91 | return; |
92 | } | |
93 | ||
f8451915 | 94 | static ssl_ctl_t * |
3202e249 | 95 | allocate_ssl_daemon(rb_fde_t * F, rb_fde_t * P, int pid) |
f8451915 AC |
96 | { |
97 | ssl_ctl_t *ctl; | |
3202e249 | 98 | |
f8451915 AC |
99 | if(F == NULL || pid < 0) |
100 | return NULL; | |
3202e249 | 101 | ctl = rb_malloc(sizeof(ssl_ctl_t)); |
f8451915 AC |
102 | ctl->F = F; |
103 | ctl->P = P; | |
104 | ctl->pid = pid; | |
105 | ssld_count++; | |
106 | rb_dlinkAdd(ctl, &ctl->node, &ssl_daemons); | |
107 | return ctl; | |
108 | } | |
109 | ||
110 | static void | |
3202e249 | 111 | free_ssl_daemon(ssl_ctl_t * ctl) |
f8451915 AC |
112 | { |
113 | rb_dlink_node *ptr; | |
114 | ssl_ctl_buf_t *ctl_buf; | |
115 | int x; | |
116 | if(ctl->cli_count) | |
117 | return; | |
3202e249 | 118 | |
f8451915 AC |
119 | RB_DLINK_FOREACH(ptr, ctl->readq.head) |
120 | { | |
121 | ctl_buf = ptr->data; | |
122 | for(x = 0; x < ctl_buf->nfds; x++) | |
3202e249 | 123 | rb_close(ctl_buf->F[x]); |
f8451915 AC |
124 | |
125 | rb_free(ctl_buf->buf); | |
3202e249 | 126 | rb_free(ctl_buf); |
f8451915 AC |
127 | } |
128 | ||
129 | RB_DLINK_FOREACH(ptr, ctl->writeq.head) | |
130 | { | |
131 | ctl_buf = ptr->data; | |
132 | for(x = 0; x < ctl_buf->nfds; x++) | |
133 | rb_close(ctl_buf->F[x]); | |
134 | ||
135 | rb_free(ctl_buf->buf); | |
136 | rb_free(ctl_buf); | |
137 | } | |
138 | rb_close(ctl->F); | |
139 | rb_close(ctl->P); | |
140 | rb_dlinkDelete(&ctl->node, &ssl_daemons); | |
141 | rb_free(ctl); | |
142 | } | |
143 | ||
144 | static char *ssld_path; | |
145 | ||
146 | static int ssld_spin_count = 0; | |
147 | static time_t last_spin; | |
148 | static int ssld_wait = 0; | |
149 | ||
150 | ||
eb1b303d SA |
151 | void |
152 | restart_ssld(void) | |
153 | { | |
154 | rb_dlink_node *ptr, *next; | |
155 | ssl_ctl_t *ctl; | |
156 | ||
157 | RB_DLINK_FOREACH_SAFE(ptr, next, ssl_daemons.head) | |
158 | { | |
159 | ctl = ptr->data; | |
160 | if(ctl->dead) | |
161 | continue; | |
162 | if(ctl->shutdown) | |
163 | continue; | |
164 | ctl->shutdown = 1; | |
165 | ssld_count--; | |
166 | if(!ctl->cli_count) | |
167 | { | |
168 | rb_kill(ctl->pid, SIGKILL); | |
169 | free_ssl_daemon(ctl); | |
170 | } | |
171 | } | |
172 | ||
f7b0c4b3 | 173 | start_ssldaemon(ServerInfo.ssld_count); |
eb1b303d SA |
174 | } |
175 | ||
f8451915 AC |
176 | static void |
177 | ssl_killall(void) | |
178 | { | |
179 | rb_dlink_node *ptr, *next; | |
180 | ssl_ctl_t *ctl; | |
181 | RB_DLINK_FOREACH_SAFE(ptr, next, ssl_daemons.head) | |
182 | { | |
183 | ctl = ptr->data; | |
184 | if(ctl->dead) | |
185 | continue; | |
186 | ctl->dead = 1; | |
eb1b303d SA |
187 | if(!ctl->shutdown) |
188 | ssld_count--; | |
3202e249 | 189 | rb_kill(ctl->pid, SIGKILL); |
eb1b303d SA |
190 | if(!ctl->cli_count) |
191 | free_ssl_daemon(ctl); | |
f8451915 AC |
192 | } |
193 | } | |
194 | ||
195 | static void | |
3202e249 | 196 | ssl_dead(ssl_ctl_t * ctl) |
f8451915 AC |
197 | { |
198 | if(ctl->dead) | |
199 | return; | |
3202e249 | 200 | |
f8451915 | 201 | ctl->dead = 1; |
3202e249 | 202 | rb_kill(ctl->pid, SIGKILL); /* make sure the process is really gone */ |
eb1b303d SA |
203 | |
204 | if(!ctl->shutdown) | |
205 | { | |
206 | ssld_count--; | |
207 | ilog(L_MAIN, "ssld helper died - attempting to restart"); | |
208 | sendto_realops_snomask(SNO_GENERAL, L_ALL, "ssld helper died - attempting to restart"); | |
f7b0c4b3 | 209 | start_ssldaemon(1); |
eb1b303d | 210 | } |
f8451915 AC |
211 | } |
212 | ||
213 | static void | |
3202e249 | 214 | ssl_do_pipe(rb_fde_t * F, void *data) |
f8451915 AC |
215 | { |
216 | int retlen; | |
217 | ssl_ctl_t *ctl = data; | |
218 | retlen = rb_write(F, "0", 1); | |
219 | if(retlen == 0 || (retlen < 0 && !rb_ignore_errno(errno))) | |
220 | { | |
221 | ssl_dead(ctl); | |
222 | return; | |
223 | } | |
224 | rb_setselect(F, RB_SELECT_READ, ssl_do_pipe, data); | |
225 | } | |
226 | ||
227 | static void | |
228 | restart_ssld_event(void *unused) | |
229 | { | |
230 | ssld_spin_count = 0; | |
231 | last_spin = 0; | |
232 | ssld_wait = 0; | |
233 | if(ServerInfo.ssld_count > get_ssld_count()) | |
234 | { | |
235 | int start = ServerInfo.ssld_count - get_ssld_count(); | |
236 | ilog(L_MAIN, "Attempting to restart ssld processes"); | |
536845c5 | 237 | sendto_realops_snomask(SNO_GENERAL, L_ALL, "Attempt to restart ssld processes"); |
f7b0c4b3 | 238 | start_ssldaemon(start); |
f8451915 AC |
239 | } |
240 | } | |
241 | ||
242 | int | |
f7b0c4b3 | 243 | start_ssldaemon(int count) |
f8451915 AC |
244 | { |
245 | rb_fde_t *F1, *F2; | |
246 | rb_fde_t *P1, *P2; | |
3202e249 VY |
247 | #ifdef _WIN32 |
248 | const char *suffix = ".exe"; | |
249 | #else | |
250 | const char *suffix = ""; | |
251 | #endif | |
252 | ||
f8451915 AC |
253 | char fullpath[PATH_MAX + 1]; |
254 | char fdarg[6]; | |
255 | const char *parv[2]; | |
256 | char buf[128]; | |
3202e249 | 257 | char s_pid[10]; |
f8451915 AC |
258 | pid_t pid; |
259 | int started = 0, i; | |
260 | ||
261 | if(ssld_wait) | |
262 | return 0; | |
263 | ||
264 | if(ssld_spin_count > 20 && (rb_current_time() - last_spin < 5)) | |
265 | { | |
b9249347 | 266 | ilog(L_MAIN, "ssld helper is spinning - will attempt to restart in 1 minute"); |
3202e249 VY |
267 | sendto_realops_snomask(SNO_GENERAL, L_ALL, |
268 | "ssld helper is spinning - will attempt to restart in 1 minute"); | |
f8451915 AC |
269 | rb_event_add("restart_ssld_event", restart_ssld_event, NULL, 60); |
270 | ssld_wait = 1; | |
271 | return 0; | |
272 | } | |
273 | ||
274 | ssld_spin_count++; | |
275 | last_spin = rb_current_time(); | |
3202e249 | 276 | |
f8451915 AC |
277 | if(ssld_path == NULL) |
278 | { | |
4d8cfacd | 279 | snprintf(fullpath, sizeof(fullpath), "%s%cssld%s", ircd_paths[IRCD_PATH_LIBEXEC], RB_PATH_SEPARATOR, suffix); |
3202e249 | 280 | |
f8451915 AC |
281 | if(access(fullpath, X_OK) == -1) |
282 | { | |
4d8cfacd AC |
283 | snprintf(fullpath, sizeof(fullpath), "%s%cbin%cssld%s", |
284 | ConfigFileEntry.dpath, RB_PATH_SEPARATOR, RB_PATH_SEPARATOR, suffix); | |
f8451915 AC |
285 | if(access(fullpath, X_OK) == -1) |
286 | { | |
3202e249 | 287 | ilog(L_MAIN, |
c74836dc | 288 | "Unable to execute ssld%s in %s or %s/bin", |
4d8cfacd | 289 | suffix, ircd_paths[IRCD_PATH_LIBEXEC], ConfigFileEntry.dpath); |
3202e249 | 290 | return 0; |
f8451915 AC |
291 | } |
292 | } | |
293 | ssld_path = rb_strdup(fullpath); | |
294 | } | |
b697c329 | 295 | rb_strlcpy(buf, "-ircd ssld daemon", sizeof(buf)); |
f8451915 AC |
296 | parv[0] = buf; |
297 | parv[1] = NULL; | |
298 | ||
299 | for(i = 0; i < count; i++) | |
300 | { | |
301 | ssl_ctl_t *ctl; | |
eda22d87 JT |
302 | if(rb_socketpair(AF_UNIX, SOCK_DGRAM, 0, &F1, &F2, "SSL/TLS handle passing socket") == -1) |
303 | { | |
304 | ilog(L_MAIN, "Unable to create ssld - rb_socketpair failed: %s", strerror(errno)); | |
305 | return started; | |
306 | } | |
55abcbb2 | 307 | |
f8451915 AC |
308 | rb_set_buffers(F1, READBUF_SIZE); |
309 | rb_set_buffers(F2, READBUF_SIZE); | |
5203cba5 | 310 | snprintf(fdarg, sizeof(fdarg), "%d", rb_get_fd(F2)); |
3202e249 | 311 | rb_setenv("CTL_FD", fdarg, 1); |
cf09122b JT |
312 | if(rb_pipe(&P1, &P2, "SSL/TLS pipe") == -1) |
313 | { | |
314 | ilog(L_MAIN, "Unable to create ssld - rb_pipe failed: %s", strerror(errno)); | |
315 | return started; | |
316 | } | |
5203cba5 | 317 | snprintf(fdarg, sizeof(fdarg), "%d", rb_get_fd(P1)); |
3202e249 | 318 | rb_setenv("CTL_PIPE", fdarg, 1); |
5203cba5 | 319 | snprintf(s_pid, sizeof(s_pid), "%d", (int)getpid()); |
3202e249 VY |
320 | rb_setenv("CTL_PPID", s_pid, 1); |
321 | #ifdef _WIN32 | |
322 | SetHandleInformation((HANDLE) rb_get_fd(F2), HANDLE_FLAG_INHERIT, 1); | |
323 | SetHandleInformation((HANDLE) rb_get_fd(P1), HANDLE_FLAG_INHERIT, 1); | |
324 | #endif | |
325 | ||
326 | pid = rb_spawn_process(ssld_path, (const char **) parv); | |
f8451915 AC |
327 | if(pid == -1) |
328 | { | |
329 | ilog(L_MAIN, "Unable to create ssld: %s\n", strerror(errno)); | |
330 | rb_close(F1); | |
331 | rb_close(F2); | |
332 | rb_close(P1); | |
333 | rb_close(P2); | |
334 | return started; | |
335 | } | |
336 | started++; | |
337 | rb_close(F2); | |
338 | rb_close(P1); | |
339 | ctl = allocate_ssl_daemon(F1, P2, pid); | |
bfc44622 | 340 | if(ircd_ssl_ok) |
93ad89b2 | 341 | ssld_update_config_one(ctl); |
f8451915 AC |
342 | ssl_read_ctl(ctl->F, ctl); |
343 | ssl_do_pipe(P2, ctl); | |
3202e249 | 344 | |
f8451915 | 345 | } |
3202e249 | 346 | return started; |
f8451915 AC |
347 | } |
348 | ||
349 | static void | |
3202e249 | 350 | ssl_process_zipstats(ssl_ctl_t * ctl, ssl_ctl_buf_t * ctl_buf) |
f8451915 AC |
351 | { |
352 | struct Client *server; | |
353 | struct ZipStats *zips; | |
4f7a1fee | 354 | char *parv[7]; |
32fb5895 | 355 | (void) rb_string_to_array(ctl_buf->buf, parv, 6); |
f8451915 AC |
356 | server = find_server(NULL, parv[1]); |
357 | if(server == NULL || server->localClient == NULL || !IsCapable(server, CAP_ZIP)) | |
358 | return; | |
359 | if(server->localClient->zipstats == NULL) | |
360 | server->localClient->zipstats = rb_malloc(sizeof(struct ZipStats)); | |
3202e249 | 361 | |
f8451915 AC |
362 | zips = server->localClient->zipstats; |
363 | ||
364 | zips->in += strtoull(parv[2], NULL, 10); | |
365 | zips->in_wire += strtoull(parv[3], NULL, 10); | |
366 | zips->out += strtoull(parv[4], NULL, 10); | |
367 | zips->out_wire += strtoull(parv[5], NULL, 10); | |
3202e249 | 368 | |
f8451915 | 369 | if(zips->in > 0) |
3202e249 | 370 | zips->in_ratio = ((double) (zips->in - zips->in_wire) / (double) zips->in) * 100.00; |
f8451915 AC |
371 | else |
372 | zips->in_ratio = 0; | |
3202e249 | 373 | |
f8451915 | 374 | if(zips->out > 0) |
3202e249 | 375 | zips->out_ratio = ((double) (zips->out - zips->out_wire) / (double) zips->out) * 100.00; |
f8451915 AC |
376 | else |
377 | zips->out_ratio = 0; | |
378 | } | |
379 | ||
4fbb7362 SA |
380 | static void |
381 | ssl_process_open_fd(ssl_ctl_t * ctl, ssl_ctl_buf_t * ctl_buf) | |
382 | { | |
383 | struct Client *client_p; | |
384 | uint32_t fd; | |
385 | ||
386 | if(ctl_buf->buflen < 5) | |
387 | return; /* bogus message..drop it.. XXX should warn here */ | |
388 | ||
389 | fd = buf_to_uint32(&ctl_buf->buf[1]); | |
390 | client_p = find_cli_connid_hash(fd); | |
391 | if(client_p == NULL || client_p->localClient == NULL) | |
392 | return; | |
393 | ||
394 | if(client_p->localClient->ssl_callback) | |
395 | { | |
396 | CNCB *hdl = client_p->localClient->ssl_callback; | |
397 | void *data = client_p->localClient->ssl_data; | |
398 | ||
399 | client_p->localClient->ssl_callback = NULL; | |
400 | client_p->localClient->ssl_data = NULL; | |
401 | ||
402 | hdl(client_p->localClient->F, RB_OK, data); | |
403 | } | |
404 | } | |
405 | ||
f8451915 | 406 | static void |
3202e249 | 407 | ssl_process_dead_fd(ssl_ctl_t * ctl, ssl_ctl_buf_t * ctl_buf) |
f8451915 AC |
408 | { |
409 | struct Client *client_p; | |
410 | char reason[256]; | |
196740c4 | 411 | uint32_t fd; |
f8451915 AC |
412 | |
413 | if(ctl_buf->buflen < 6) | |
3202e249 VY |
414 | return; /* bogus message..drop it.. XXX should warn here */ |
415 | ||
196740c4 | 416 | fd = buf_to_uint32(&ctl_buf->buf[1]); |
f8451915 | 417 | rb_strlcpy(reason, &ctl_buf->buf[5], sizeof(reason)); |
b5b4a0e7 | 418 | client_p = find_cli_connid_hash(fd); |
4fbb7362 | 419 | if(client_p == NULL || client_p->localClient == NULL) |
f8451915 | 420 | return; |
4fbb7362 SA |
421 | |
422 | if(IsAnyServer(client_p)) | |
423 | { | |
424 | 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); | |
425 | ilog(L_SERVER, "ssld error for %s: %s", log_client_name(client_p, SHOW_IP), reason); | |
426 | } | |
427 | ||
428 | /* if there is still a pending callback, call it now */ | |
429 | if(client_p->localClient->ssl_callback) | |
430 | { | |
431 | CNCB *hdl = client_p->localClient->ssl_callback; | |
432 | void *data = client_p->localClient->ssl_data; | |
433 | ||
434 | client_p->localClient->ssl_callback = NULL; | |
435 | client_p->localClient->ssl_data = NULL; | |
436 | ||
437 | hdl(client_p->localClient->F, RB_ERROR_SSL, data); | |
438 | ||
439 | /* the callback should have exited the client */ | |
440 | return; | |
441 | } | |
442 | ||
42d609f6 JT |
443 | if(IsAnyServer(client_p) || IsRegistered(client_p)) |
444 | { | |
445 | /* read any last moment ERROR, QUIT or the like -- jilles */ | |
446 | if (!strcmp(reason, "Remote host closed the connection")) | |
447 | read_packet(client_p->localClient->F, client_p); | |
448 | if (IsAnyDead(client_p)) | |
449 | return; | |
450 | } | |
f8451915 AC |
451 | exit_client(client_p, client_p, &me, reason); |
452 | } | |
453 | ||
ebe33dbf AC |
454 | |
455 | static void | |
456 | ssl_process_cipher_string(ssl_ctl_t *ctl, ssl_ctl_buf_t *ctl_buf) | |
457 | { | |
458 | struct Client *client_p; | |
459 | const char *cstring; | |
460 | uint32_t fd; | |
461 | ||
462 | if(ctl_buf->buflen < 6) | |
463 | return; /* bogus message..drop it.. XXX should warn here */ | |
464 | ||
465 | fd = buf_to_uint32(&ctl_buf->buf[1]); | |
466 | cstring = (const char *)&ctl_buf->buf[5]; | |
467 | ||
468 | if(EmptyString(cstring)) | |
469 | return; | |
470 | ||
b5b4a0e7 | 471 | client_p = find_cli_connid_hash(fd); |
ebe33dbf AC |
472 | if(client_p != NULL && client_p->localClient != NULL) |
473 | { | |
474 | rb_free(client_p->localClient->cipher_string); | |
475 | client_p->localClient->cipher_string = rb_strdup(cstring); | |
476 | } | |
477 | } | |
478 | ||
479 | ||
7247337a JT |
480 | static void |
481 | ssl_process_certfp(ssl_ctl_t * ctl, ssl_ctl_buf_t * ctl_buf) | |
482 | { | |
483 | struct Client *client_p; | |
196740c4 | 484 | uint32_t fd; |
dc986b54 | 485 | uint32_t certfp_method; |
196740c4 | 486 | uint32_t len; |
7247337a | 487 | uint8_t *certfp; |
8eda114a | 488 | char *certfp_string; |
dc986b54 SA |
489 | const char *method_string; |
490 | int method_len; | |
7247337a | 491 | |
dc986b54 | 492 | if(ctl_buf->buflen > 13 + RB_SSL_CERTFP_LEN) |
7247337a JT |
493 | return; /* bogus message..drop it.. XXX should warn here */ |
494 | ||
196740c4 | 495 | fd = buf_to_uint32(&ctl_buf->buf[1]); |
dc986b54 SA |
496 | certfp_method = buf_to_uint32(&ctl_buf->buf[5]); |
497 | len = buf_to_uint32(&ctl_buf->buf[9]); | |
498 | certfp = (uint8_t *)&ctl_buf->buf[13]; | |
b5b4a0e7 | 499 | client_p = find_cli_connid_hash(fd); |
7247337a JT |
500 | if(client_p == NULL) |
501 | return; | |
dc986b54 SA |
502 | |
503 | switch (certfp_method) { | |
504 | case RB_SSL_CERTFP_METH_CERT_SHA1: | |
505 | case RB_SSL_CERTFP_METH_CERT_SHA256: | |
506 | case RB_SSL_CERTFP_METH_CERT_SHA512: | |
507 | method_string = ""; | |
508 | break; | |
509 | ||
510 | /* These names are copied from RFC 7218 */ | |
511 | case RB_SSL_CERTFP_METH_SPKI_SHA256: | |
512 | method_string = "SPKI:SHA2-256:"; | |
513 | break; | |
514 | case RB_SSL_CERTFP_METH_SPKI_SHA512: | |
515 | method_string = "SPKI:SHA2-512:"; | |
516 | break; | |
517 | default: | |
518 | return; | |
519 | } | |
520 | method_len = strlen(method_string); | |
521 | ||
8eda114a | 522 | rb_free(client_p->certfp); |
dc986b54 SA |
523 | certfp_string = rb_malloc(method_len + len * 2 + 1); |
524 | strcpy(certfp_string, method_string); | |
66769bc1 | 525 | for(uint32_t i = 0; i < len; i++) |
dc986b54 | 526 | snprintf(certfp_string + method_len + 2 * i, 3, "%02x", |
7247337a | 527 | certfp[i]); |
8eda114a | 528 | client_p->certfp = certfp_string; |
7247337a JT |
529 | } |
530 | ||
f8451915 | 531 | static void |
3202e249 | 532 | ssl_process_cmd_recv(ssl_ctl_t * ctl) |
f8451915 AC |
533 | { |
534 | static const char *cannot_setup_ssl = "ssld cannot setup ssl, check your certificates and private key"; | |
535 | static const char *no_ssl_or_zlib = "ssld has neither SSL/TLS or zlib support killing all sslds"; | |
3202e249 | 536 | rb_dlink_node *ptr, *next; |
f8451915 | 537 | ssl_ctl_buf_t *ctl_buf; |
66769bc1 | 538 | unsigned long len; |
e9ffc3c1 | 539 | |
f8451915 AC |
540 | if(ctl->dead) |
541 | return; | |
e9ffc3c1 | 542 | |
f8451915 AC |
543 | RB_DLINK_FOREACH_SAFE(ptr, next, ctl->readq.head) |
544 | { | |
3202e249 VY |
545 | ctl_buf = ptr->data; |
546 | switch (*ctl_buf->buf) | |
f8451915 | 547 | { |
3202e249 | 548 | case 'N': |
bfc44622 | 549 | ircd_ssl_ok = false; /* ssld says it can't do ssl/tls */ |
3202e249 | 550 | break; |
4fbb7362 SA |
551 | case 'O': |
552 | ssl_process_open_fd(ctl, ctl_buf); | |
553 | break; | |
3202e249 VY |
554 | case 'D': |
555 | ssl_process_dead_fd(ctl, ctl_buf); | |
556 | break; | |
ebe33dbf AC |
557 | case 'C': |
558 | ssl_process_cipher_string(ctl, ctl_buf); | |
559 | break; | |
7247337a JT |
560 | case 'F': |
561 | ssl_process_certfp(ctl, ctl_buf); | |
562 | break; | |
3202e249 VY |
563 | case 'S': |
564 | ssl_process_zipstats(ctl, ctl_buf); | |
565 | break; | |
566 | case 'I': | |
bfc44622 | 567 | ircd_ssl_ok = false; |
32ea9d3d | 568 | ilog(L_MAIN, "%s", cannot_setup_ssl); |
481b443b | 569 | sendto_realops_snomask(SNO_GENERAL, L_ALL, "%s", cannot_setup_ssl); |
f1709d5a | 570 | break; |
3202e249 | 571 | case 'U': |
43f06d8d | 572 | ircd_zlib_ok = 0; |
bfc44622 | 573 | ircd_ssl_ok = false; |
32ea9d3d | 574 | ilog(L_MAIN, "%s", no_ssl_or_zlib); |
481b443b | 575 | sendto_realops_snomask(SNO_GENERAL, L_ALL, "%s", no_ssl_or_zlib); |
3202e249 | 576 | ssl_killall(); |
7cc67225 | 577 | return; |
e9ffc3c1 SA |
578 | case 'V': |
579 | len = ctl_buf->buflen - 1; | |
580 | if (len > sizeof(ctl->version) - 1) | |
581 | len = sizeof(ctl->version) - 1; | |
582 | strncpy(ctl->version, &ctl_buf->buf[1], len); | |
3202e249 | 583 | case 'z': |
43f06d8d | 584 | ircd_zlib_ok = 0; |
3202e249 VY |
585 | break; |
586 | default: | |
587 | ilog(L_MAIN, "Received invalid command from ssld: %s", ctl_buf->buf); | |
588 | sendto_realops_snomask(SNO_GENERAL, L_ALL, "Received invalid command from ssld"); | |
589 | break; | |
f8451915 AC |
590 | } |
591 | rb_dlinkDelete(ptr, &ctl->readq); | |
592 | rb_free(ctl_buf->buf); | |
593 | rb_free(ctl_buf); | |
594 | } | |
595 | ||
596 | } | |
597 | ||
598 | ||
599 | static void | |
3202e249 | 600 | ssl_read_ctl(rb_fde_t * F, void *data) |
f8451915 AC |
601 | { |
602 | ssl_ctl_buf_t *ctl_buf; | |
603 | ssl_ctl_t *ctl = data; | |
604 | int retlen; | |
605 | ||
606 | if(ctl->dead) | |
607 | return; | |
608 | do | |
609 | { | |
610 | ctl_buf = rb_malloc(sizeof(ssl_ctl_buf_t)); | |
611 | ctl_buf->buf = rb_malloc(READSIZE); | |
612 | retlen = rb_recv_fd_buf(ctl->F, ctl_buf->buf, READSIZE, ctl_buf->F, 4); | |
613 | ctl_buf->buflen = retlen; | |
3202e249 VY |
614 | if(retlen <= 0) |
615 | { | |
f8451915 AC |
616 | rb_free(ctl_buf->buf); |
617 | rb_free(ctl_buf); | |
618 | } | |
619 | else | |
620 | rb_dlinkAddTail(ctl_buf, &ctl_buf->node, &ctl->readq); | |
3202e249 VY |
621 | } |
622 | while(retlen > 0); | |
623 | ||
f8451915 AC |
624 | if(retlen == 0 || (retlen < 0 && !rb_ignore_errno(errno))) |
625 | { | |
626 | ssl_dead(ctl); | |
627 | return; | |
3202e249 | 628 | } |
f8451915 AC |
629 | ssl_process_cmd_recv(ctl); |
630 | rb_setselect(ctl->F, RB_SELECT_READ, ssl_read_ctl, ctl); | |
631 | } | |
632 | ||
633 | static ssl_ctl_t * | |
634 | which_ssld(void) | |
635 | { | |
636 | ssl_ctl_t *ctl, *lowest = NULL; | |
637 | rb_dlink_node *ptr; | |
3202e249 | 638 | |
f8451915 AC |
639 | RB_DLINK_FOREACH(ptr, ssl_daemons.head) |
640 | { | |
641 | ctl = ptr->data; | |
642 | if(ctl->dead) | |
643 | continue; | |
eb1b303d SA |
644 | if(ctl->shutdown) |
645 | continue; | |
3202e249 VY |
646 | if(lowest == NULL) |
647 | { | |
f8451915 AC |
648 | lowest = ctl; |
649 | continue; | |
650 | } | |
651 | if(ctl->cli_count < lowest->cli_count) | |
652 | lowest = ctl; | |
653 | } | |
3202e249 | 654 | return (lowest); |
f8451915 AC |
655 | } |
656 | ||
657 | static void | |
3202e249 | 658 | ssl_write_ctl(rb_fde_t * F, void *data) |
f8451915 AC |
659 | { |
660 | ssl_ctl_t *ctl = data; | |
661 | ssl_ctl_buf_t *ctl_buf; | |
662 | rb_dlink_node *ptr, *next; | |
663 | int retlen, x; | |
664 | ||
665 | if(ctl->dead) | |
666 | return; | |
667 | ||
668 | RB_DLINK_FOREACH_SAFE(ptr, next, ctl->writeq.head) | |
669 | { | |
670 | ctl_buf = ptr->data; | |
671 | /* in theory unix sock_dgram shouldn't ever short write this.. */ | |
3202e249 | 672 | retlen = rb_send_fd_buf(ctl->F, ctl_buf->F, ctl_buf->nfds, ctl_buf->buf, ctl_buf->buflen, ctl->pid); |
f8451915 AC |
673 | if(retlen > 0) |
674 | { | |
675 | rb_dlinkDelete(ptr, &ctl->writeq); | |
676 | for(x = 0; x < ctl_buf->nfds; x++) | |
677 | rb_close(ctl_buf->F[x]); | |
678 | rb_free(ctl_buf->buf); | |
679 | rb_free(ctl_buf); | |
3202e249 | 680 | |
f8451915 AC |
681 | } |
682 | if(retlen == 0 || (retlen < 0 && !rb_ignore_errno(errno))) | |
683 | { | |
684 | ssl_dead(ctl); | |
685 | return; | |
3202e249 VY |
686 | } |
687 | else | |
688 | { | |
f8451915 AC |
689 | rb_setselect(ctl->F, RB_SELECT_WRITE, ssl_write_ctl, ctl); |
690 | } | |
691 | } | |
692 | } | |
693 | ||
694 | static void | |
3202e249 | 695 | ssl_cmd_write_queue(ssl_ctl_t * ctl, rb_fde_t ** F, int count, const void *buf, size_t buflen) |
f8451915 AC |
696 | { |
697 | ssl_ctl_buf_t *ctl_buf; | |
3202e249 | 698 | int x; |
f8451915 AC |
699 | |
700 | /* don't bother */ | |
701 | if(ctl->dead) | |
702 | return; | |
3202e249 | 703 | |
f8451915 AC |
704 | ctl_buf = rb_malloc(sizeof(ssl_ctl_buf_t)); |
705 | ctl_buf->buf = rb_malloc(buflen); | |
706 | memcpy(ctl_buf->buf, buf, buflen); | |
707 | ctl_buf->buflen = buflen; | |
3202e249 | 708 | |
f8451915 AC |
709 | for(x = 0; x < count && x < MAXPASSFD; x++) |
710 | { | |
3202e249 | 711 | ctl_buf->F[x] = F[x]; |
f8451915 AC |
712 | } |
713 | ctl_buf->nfds = count; | |
714 | rb_dlinkAddTail(ctl_buf, &ctl_buf->node, &ctl->writeq); | |
715 | ssl_write_ctl(ctl->F, ctl); | |
716 | } | |
717 | ||
718 | ||
719 | static void | |
f7b0c4b3 | 720 | send_new_ssl_certs_one(ssl_ctl_t * ctl) |
f8451915 AC |
721 | { |
722 | size_t len; | |
723 | ||
f7b0c4b3 SA |
724 | len = strlen(ServerInfo.ssl_cert) + strlen(ServerInfo.ssl_private_key) + 5; |
725 | if(ServerInfo.ssl_dh_params) | |
726 | len += strlen(ServerInfo.ssl_dh_params); | |
727 | if(ServerInfo.ssl_cipher_list) | |
728 | len += strlen(ServerInfo.ssl_cipher_list); | |
f8451915 AC |
729 | if(len > sizeof(tmpbuf)) |
730 | { | |
3202e249 VY |
731 | sendto_realops_snomask(SNO_GENERAL, L_ALL, |
732 | "Parameters for send_new_ssl_certs_one too long (%zu > %zu) to pass to ssld, not sending...", | |
733 | len, sizeof(tmpbuf)); | |
734 | ilog(L_MAIN, | |
735 | "Parameters for send_new_ssl_certs_one too long (%zu > %zu) to pass to ssld, not sending...", | |
736 | len, sizeof(tmpbuf)); | |
f8451915 AC |
737 | return; |
738 | } | |
f7b0c4b3 SA |
739 | len = snprintf(tmpbuf, sizeof(tmpbuf), "K%c%s%c%s%c%s%c%s%c", nul, |
740 | ServerInfo.ssl_cert, nul, | |
741 | ServerInfo.ssl_private_key, nul, | |
742 | ServerInfo.ssl_dh_params != NULL ? ServerInfo.ssl_dh_params : "", nul, | |
743 | ServerInfo.ssl_cipher_list != NULL ? ServerInfo.ssl_cipher_list : "", nul); | |
f8451915 AC |
744 | ssl_cmd_write_queue(ctl, NULL, 0, tmpbuf, len); |
745 | } | |
746 | ||
13d8f0ed | 747 | static void |
93ad89b2 | 748 | send_certfp_method(ssl_ctl_t *ctl) |
13d8f0ed AC |
749 | { |
750 | char buf[5]; | |
751 | ||
752 | buf[0] = 'F'; | |
93ad89b2 | 753 | uint32_to_buf(&buf[1], ConfigFileEntry.certfp_method); |
13d8f0ed AC |
754 | ssl_cmd_write_queue(ctl, NULL, 0, buf, sizeof(buf)); |
755 | } | |
756 | ||
93ad89b2 SA |
757 | static void |
758 | ssld_update_config_one(ssl_ctl_t *ctl) | |
759 | { | |
760 | send_certfp_method(ctl); | |
761 | send_new_ssl_certs_one(ctl); | |
762 | } | |
763 | ||
f8451915 | 764 | void |
f7b0c4b3 | 765 | ssld_update_config(void) |
f8451915 AC |
766 | { |
767 | rb_dlink_node *ptr; | |
f7b0c4b3 | 768 | |
f8451915 AC |
769 | RB_DLINK_FOREACH(ptr, ssl_daemons.head) |
770 | { | |
771 | ssl_ctl_t *ctl = ptr->data; | |
93ad89b2 | 772 | ssld_update_config_one(ctl); |
f8451915 AC |
773 | } |
774 | } | |
775 | ||
3202e249 | 776 | ssl_ctl_t * |
196740c4 | 777 | start_ssld_accept(rb_fde_t * sslF, rb_fde_t * plainF, uint32_t id) |
f8451915 AC |
778 | { |
779 | rb_fde_t *F[2]; | |
780 | ssl_ctl_t *ctl; | |
781 | char buf[5]; | |
782 | F[0] = sslF; | |
783 | F[1] = plainF; | |
784 | ||
785 | buf[0] = 'A'; | |
196740c4 | 786 | uint32_to_buf(&buf[1], id); |
f8451915 | 787 | ctl = which_ssld(); |
5e270e7d SA |
788 | if(!ctl) |
789 | return NULL; | |
f8451915 AC |
790 | ctl->cli_count++; |
791 | ssl_cmd_write_queue(ctl, F, 2, buf, sizeof(buf)); | |
792 | return ctl; | |
793 | } | |
794 | ||
795 | ssl_ctl_t * | |
196740c4 | 796 | start_ssld_connect(rb_fde_t * sslF, rb_fde_t * plainF, uint32_t id) |
f8451915 AC |
797 | { |
798 | rb_fde_t *F[2]; | |
799 | ssl_ctl_t *ctl; | |
800 | char buf[5]; | |
801 | F[0] = sslF; | |
802 | F[1] = plainF; | |
803 | ||
804 | buf[0] = 'C'; | |
196740c4 | 805 | uint32_to_buf(&buf[1], id); |
f8451915 AC |
806 | |
807 | ctl = which_ssld(); | |
5e270e7d SA |
808 | if(!ctl) |
809 | return NULL; | |
f8451915 AC |
810 | ctl->cli_count++; |
811 | ssl_cmd_write_queue(ctl, F, 2, buf, sizeof(buf)); | |
3202e249 | 812 | return ctl; |
f8451915 AC |
813 | } |
814 | ||
3202e249 VY |
815 | void |
816 | ssld_decrement_clicount(ssl_ctl_t * ctl) | |
f8451915 AC |
817 | { |
818 | if(ctl == NULL) | |
819 | return; | |
820 | ||
821 | ctl->cli_count--; | |
eb1b303d SA |
822 | if(ctl->shutdown && !ctl->cli_count) |
823 | { | |
824 | ctl->dead = 1; | |
825 | rb_kill(ctl->pid, SIGKILL); | |
826 | } | |
f8451915 AC |
827 | if(ctl->dead && !ctl->cli_count) |
828 | { | |
829 | free_ssl_daemon(ctl); | |
830 | } | |
831 | } | |
832 | ||
55abcbb2 | 833 | /* |
f8451915 | 834 | * what we end up sending to the ssld process for ziplinks is the following |
55abcbb2 KB |
835 | * Z[ourfd][level][RECVQ] |
836 | * Z = ziplinks command = buf[0] | |
f8451915 AC |
837 | * ourfd = Our end of the socketpair = buf[1..4] |
838 | * level = zip level buf[5] | |
839 | * recvqlen = our recvq len = buf[6-7] | |
840 | * recvq = any data we read prior to starting ziplinks | |
841 | */ | |
842 | void | |
843 | start_zlib_session(void *data) | |
844 | { | |
3202e249 | 845 | struct Client *server = (struct Client *) data; |
0862e335 VY |
846 | uint16_t recvqlen; |
847 | uint8_t level; | |
f8451915 AC |
848 | void *xbuf; |
849 | ||
850 | rb_fde_t *F[2]; | |
851 | rb_fde_t *xF1, *xF2; | |
852 | char *buf; | |
853 | void *recvq_start; | |
854 | ||
196740c4 | 855 | size_t hdr = (sizeof(uint8_t) * 2) + sizeof(uint32_t); |
f8451915 AC |
856 | size_t len; |
857 | int cpylen, left; | |
858 | ||
859 | server->localClient->event = NULL; | |
860 | ||
861 | recvqlen = rb_linebuf_len(&server->localClient->buf_recvq); | |
3202e249 | 862 | |
f8451915 AC |
863 | len = recvqlen + hdr; |
864 | ||
865 | if(len > READBUF_SIZE) | |
866 | { | |
3202e249 VY |
867 | sendto_realops_snomask(SNO_GENERAL, L_ALL, |
868 | "ssld - attempted to pass message of %zd len, max len %d, giving up", | |
869 | len, READBUF_SIZE); | |
f8451915 AC |
870 | ilog(L_MAIN, "ssld - attempted to pass message of %zd len, max len %d, giving up", len, READBUF_SIZE); |
871 | exit_client(server, server, server, "ssld readbuf exceeded"); | |
872 | return; | |
873 | } | |
874 | ||
3202e249 | 875 | buf = rb_malloc(len); |
f8451915 AC |
876 | level = ConfigFileEntry.compression_level; |
877 | ||
196740c4 | 878 | uint32_to_buf(&buf[1], rb_get_fd(server->localClient->F)); |
3202e249 | 879 | buf[5] = (char) level; |
f8451915 | 880 | |
3202e249 | 881 | recvq_start = &buf[6]; |
f8451915 AC |
882 | server->localClient->zipstats = rb_malloc(sizeof(struct ZipStats)); |
883 | ||
884 | xbuf = recvq_start; | |
885 | left = recvqlen; | |
886 | ||
887 | do | |
888 | { | |
889 | cpylen = rb_linebuf_get(&server->localClient->buf_recvq, xbuf, left, LINEBUF_PARTIAL, LINEBUF_RAW); | |
890 | left -= cpylen; | |
3202e249 VY |
891 | xbuf = (void *) (((uintptr_t) xbuf) + cpylen); |
892 | } | |
893 | while(cpylen > 0); | |
f8451915 AC |
894 | |
895 | /* Pass the socket to ssld. */ | |
896 | *buf = 'Z'; | |
eda22d87 JT |
897 | if(rb_socketpair(AF_UNIX, SOCK_STREAM, 0, &xF1, &xF2, "Initial zlib socketpairs") == -1) |
898 | { | |
899 | sendto_realops_snomask(SNO_GENERAL, L_ALL, "Error creating zlib socketpair - %s", strerror(errno)); | |
900 | ilog(L_MAIN, "Error creating zlib socketpairs - %s", strerror(errno)); | |
901 | exit_client(server, server, server, "Error creating zlib socketpair"); | |
b9ff4868 | 902 | rb_free(buf); |
eda22d87 JT |
903 | return; |
904 | } | |
55abcbb2 | 905 | |
3202e249 | 906 | F[0] = server->localClient->F; |
f8451915 | 907 | F[1] = xF1; |
f8451915 AC |
908 | server->localClient->F = xF2; |
909 | /* need to redo as what we did before isn't valid now */ | |
de7cf7e0 | 910 | uint32_to_buf(&buf[1], connid_get(server)); |
a4165b42 AS |
911 | |
912 | server->localClient->z_ctl = which_ssld(); | |
5e270e7d SA |
913 | if(!server->localClient->z_ctl) |
914 | { | |
915 | exit_client(server, server, server, "Error finding available ssld"); | |
916 | rb_free(buf); | |
917 | return; | |
918 | } | |
a4165b42 AS |
919 | server->localClient->z_ctl->cli_count++; |
920 | ssl_cmd_write_queue(server->localClient->z_ctl, F, 2, buf, len); | |
f8451915 AC |
921 | rb_free(buf); |
922 | } | |
923 | ||
924 | static void | |
925 | collect_zipstats(void *unused) | |
926 | { | |
927 | rb_dlink_node *ptr; | |
928 | struct Client *target_p; | |
196740c4 | 929 | char buf[sizeof(uint8_t) + sizeof(uint32_t) + HOSTLEN]; |
f8451915 AC |
930 | void *odata; |
931 | size_t len; | |
196740c4 | 932 | uint32_t id; |
f8451915 AC |
933 | |
934 | buf[0] = 'S'; | |
196740c4 | 935 | odata = buf + sizeof(uint8_t) + sizeof(uint32_t); |
f8451915 AC |
936 | |
937 | RB_DLINK_FOREACH(ptr, serv_list.head) | |
938 | { | |
939 | target_p = ptr->data; | |
940 | if(IsCapable(target_p, CAP_ZIP)) | |
941 | { | |
0862e335 | 942 | len = sizeof(uint8_t) + sizeof(uint32_t); |
f8451915 AC |
943 | |
944 | id = rb_get_fd(target_p->localClient->F); | |
196740c4 | 945 | uint32_to_buf(&buf[1], id); |
3202e249 VY |
946 | rb_strlcpy(odata, target_p->name, (sizeof(buf) - len)); |
947 | len += strlen(odata) + 1; /* Get the \0 as well */ | |
a4165b42 | 948 | ssl_cmd_write_queue(target_p->localClient->z_ctl, NULL, 0, buf, len); |
f8451915 AC |
949 | } |
950 | } | |
951 | } | |
952 | ||
953 | static void | |
954 | cleanup_dead_ssl(void *unused) | |
955 | { | |
956 | rb_dlink_node *ptr, *next; | |
957 | ssl_ctl_t *ctl; | |
958 | RB_DLINK_FOREACH_SAFE(ptr, next, ssl_daemons.head) | |
959 | { | |
960 | ctl = ptr->data; | |
961 | if(ctl->dead && !ctl->cli_count) | |
962 | { | |
3202e249 | 963 | free_ssl_daemon(ctl); |
f8451915 AC |
964 | } |
965 | } | |
966 | } | |
967 | ||
968 | int | |
969 | get_ssld_count(void) | |
970 | { | |
971 | return ssld_count; | |
972 | } | |
973 | ||
035d9143 | 974 | void |
e9ffc3c1 | 975 | ssld_foreach_info(void (*func)(void *data, pid_t pid, int cli_count, enum ssld_status status, const char *version), void *data) |
035d9143 SA |
976 | { |
977 | rb_dlink_node *ptr, *next; | |
978 | ssl_ctl_t *ctl; | |
979 | RB_DLINK_FOREACH_SAFE(ptr, next, ssl_daemons.head) | |
980 | { | |
981 | ctl = ptr->data; | |
982 | func(data, ctl->pid, ctl->cli_count, | |
983 | ctl->dead ? SSLD_DEAD : | |
e9ffc3c1 SA |
984 | (ctl->shutdown ? SSLD_SHUTDOWN : SSLD_ACTIVE), |
985 | ctl->version); | |
035d9143 SA |
986 | } |
987 | } | |
988 | ||
3202e249 VY |
989 | void |
990 | init_ssld(void) | |
f8451915 AC |
991 | { |
992 | rb_event_addish("collect_zipstats", collect_zipstats, NULL, ZIPSTATS_TIME); | |
c42a66be | 993 | rb_event_addish("cleanup_dead_ssld", cleanup_dead_ssl, NULL, 60); |
f8451915 | 994 | } |