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8d99443b VY |
1 | /* |
2 | * ssld.c: The ircd-ratbox ssl/zlib helper daemon thingy | |
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 | * | |
3202e249 | 21 | * $Id$ |
8d99443b VY |
22 | */ |
23 | ||
24 | ||
25 | #include "stdinc.h" | |
26 | ||
27 | #ifdef HAVE_LIBZ | |
28 | #include <zlib.h> | |
29 | #endif | |
30 | ||
31 | #define MAXPASSFD 4 | |
32 | #ifndef READBUF_SIZE | |
33 | #define READBUF_SIZE 16384 | |
34 | #endif | |
35 | ||
36 | static void setup_signals(void); | |
3202e249 | 37 | static pid_t ppid; |
8d99443b | 38 | |
3202e249 VY |
39 | static inline int32_t |
40 | buf_to_int32(char *buf) | |
8d99443b | 41 | { |
7edb4f16 | 42 | int32_t x; |
4b6a4d47 | 43 | memcpy(&x, buf, sizeof(x)); |
8d99443b VY |
44 | return x; |
45 | } | |
46 | ||
3202e249 VY |
47 | static inline void |
48 | int32_to_buf(char *buf, int32_t x) | |
8d99443b | 49 | { |
4b6a4d47 | 50 | memcpy(buf, &x, sizeof(x)); |
8d99443b VY |
51 | return; |
52 | } | |
53 | ||
3202e249 VY |
54 | static inline uint16_t |
55 | buf_to_uint16(char *buf) | |
8d99443b | 56 | { |
7edb4f16 | 57 | uint16_t x; |
4b6a4d47 | 58 | memcpy(&x, buf, sizeof(x)); |
8d99443b VY |
59 | return x; |
60 | } | |
61 | ||
3202e249 VY |
62 | static inline void |
63 | uint16_to_buf(char *buf, uint16_t x) | |
8d99443b | 64 | { |
4b6a4d47 | 65 | memcpy(buf, &x, sizeof(x)); |
8d99443b VY |
66 | return; |
67 | } | |
3202e249 | 68 | |
8d99443b | 69 | |
8d99443b | 70 | static char inbuf[READBUF_SIZE]; |
4b6a4d47 | 71 | #ifdef HAVE_LIBZ |
8d99443b | 72 | static char outbuf[READBUF_SIZE]; |
4b6a4d47 | 73 | #endif |
8d99443b VY |
74 | |
75 | typedef struct _mod_ctl_buf | |
76 | { | |
77 | rb_dlink_node node; | |
78 | char *buf; | |
79 | size_t buflen; | |
80 | rb_fde_t *F[MAXPASSFD]; | |
81 | int nfds; | |
82 | } mod_ctl_buf_t; | |
83 | ||
84 | typedef struct _mod_ctl | |
85 | { | |
86 | rb_dlink_node node; | |
87 | int cli_count; | |
88 | rb_fde_t *F; | |
89 | rb_fde_t *F_pipe; | |
90 | rb_dlink_list readq; | |
91 | rb_dlink_list writeq; | |
92 | } mod_ctl_t; | |
93 | ||
94 | static mod_ctl_t *mod_ctl; | |
95 | ||
96 | ||
97 | #ifdef HAVE_LIBZ | |
98 | typedef struct _zlib_stream | |
99 | { | |
100 | z_stream instream; | |
101 | z_stream outstream; | |
102 | } zlib_stream_t; | |
103 | #endif | |
104 | ||
105 | typedef struct _conn | |
106 | { | |
107 | rb_dlink_node node; | |
108 | mod_ctl_t *ctl; | |
109 | rawbuf_head_t *modbuf_out; | |
110 | rawbuf_head_t *plainbuf_out; | |
111 | ||
7edb4f16 | 112 | int32_t id; |
8d99443b VY |
113 | |
114 | rb_fde_t *mod_fd; | |
115 | rb_fde_t *plain_fd; | |
116 | unsigned long long mod_out; | |
117 | unsigned long long mod_in; | |
118 | unsigned long long plain_in; | |
119 | unsigned long long plain_out; | |
7edb4f16 | 120 | uint8_t flags; |
8d99443b VY |
121 | void *stream; |
122 | } conn_t; | |
123 | ||
124 | #define FLAG_SSL 0x01 | |
125 | #define FLAG_ZIP 0x02 | |
126 | #define FLAG_CORK 0x04 | |
127 | #define FLAG_DEAD 0x08 | |
3202e249 VY |
128 | #define FLAG_SSL_W_WANTS_R 0x10 /* output needs to wait until input possible */ |
129 | #define FLAG_SSL_R_WANTS_W 0x20 /* input needs to wait until output possible */ | |
8d99443b VY |
130 | |
131 | #define IsSSL(x) ((x)->flags & FLAG_SSL) | |
132 | #define IsZip(x) ((x)->flags & FLAG_ZIP) | |
133 | #define IsCork(x) ((x)->flags & FLAG_CORK) | |
134 | #define IsDead(x) ((x)->flags & FLAG_DEAD) | |
73d6283c VY |
135 | #define IsSSLWWantsR(x) ((x)->flags & FLAG_SSL_W_WANTS_R) |
136 | #define IsSSLRWantsW(x) ((x)->flags & FLAG_SSL_R_WANTS_W) | |
8d99443b VY |
137 | |
138 | #define SetSSL(x) ((x)->flags |= FLAG_SSL) | |
139 | #define SetZip(x) ((x)->flags |= FLAG_ZIP) | |
140 | #define SetCork(x) ((x)->flags |= FLAG_CORK) | |
141 | #define SetDead(x) ((x)->flags |= FLAG_DEAD) | |
73d6283c VY |
142 | #define SetSSLWWantsR(x) ((x)->flags |= FLAG_SSL_W_WANTS_R) |
143 | #define SetSSLRWantsW(x) ((x)->flags |= FLAG_SSL_R_WANTS_W) | |
8d99443b VY |
144 | |
145 | #define ClearSSL(x) ((x)->flags &= ~FLAG_SSL) | |
146 | #define ClearZip(x) ((x)->flags &= ~FLAG_ZIP) | |
147 | #define ClearCork(x) ((x)->flags &= ~FLAG_CORK) | |
148 | #define ClearDead(x) ((x)->flags &= ~FLAG_DEAD) | |
73d6283c VY |
149 | #define ClearSSLWWantsR(x) ((x)->flags &= ~FLAG_SSL_W_WANTS_R) |
150 | #define ClearSSLRWantsW(x) ((x)->flags &= ~FLAG_SSL_R_WANTS_W) | |
8d99443b VY |
151 | |
152 | #define NO_WAIT 0x0 | |
153 | #define WAIT_PLAIN 0x1 | |
154 | ||
4b6a4d47 VY |
155 | #define HASH_WALK_SAFE(i, max, ptr, next, table) for(i = 0; i < max; i++) { RB_DLINK_FOREACH_SAFE(ptr, next, table[i].head) |
156 | #define HASH_WALK_END } | |
8d99443b VY |
157 | #define CONN_HASH_SIZE 2000 |
158 | #define connid_hash(x) (&connid_hash_table[(x % CONN_HASH_SIZE)]) | |
159 | ||
4b6a4d47 VY |
160 | |
161 | ||
8d99443b VY |
162 | static rb_dlink_list connid_hash_table[CONN_HASH_SIZE]; |
163 | static rb_dlink_list dead_list; | |
164 | ||
3202e249 | 165 | static void conn_mod_read_cb(rb_fde_t *fd, void *data); |
8d99443b VY |
166 | static void conn_mod_write_sendq(rb_fde_t *, void *data); |
167 | static void conn_plain_write_sendq(rb_fde_t *, void *data); | |
168 | static void mod_write_ctl(rb_fde_t *, void *data); | |
3202e249 VY |
169 | static void conn_plain_read_cb(rb_fde_t *fd, void *data); |
170 | static void mod_cmd_write_queue(mod_ctl_t * ctl, const void *data, size_t len); | |
8d99443b VY |
171 | static const char *remote_closed = "Remote host closed the connection"; |
172 | static int ssl_ok; | |
173 | #ifdef HAVE_LIBZ | |
174 | static int zlib_ok = 1; | |
175 | #else | |
176 | static int zlib_ok = 0; | |
177 | #endif | |
4b6a4d47 VY |
178 | |
179 | ||
180 | #ifdef HAVE_LIBZ | |
8d99443b VY |
181 | static void * |
182 | ssld_alloc(void *unused, size_t count, size_t size) | |
183 | { | |
184 | return rb_malloc(count * size); | |
185 | } | |
186 | ||
187 | static void | |
188 | ssld_free(void *unused, void *ptr) | |
189 | { | |
3202e249 | 190 | rb_free(ptr); |
8d99443b | 191 | } |
4b6a4d47 | 192 | #endif |
8d99443b VY |
193 | |
194 | static conn_t * | |
7edb4f16 | 195 | conn_find_by_id(int32_t id) |
8d99443b VY |
196 | { |
197 | rb_dlink_node *ptr; | |
198 | conn_t *conn; | |
199 | ||
200 | RB_DLINK_FOREACH(ptr, (connid_hash(id))->head) | |
201 | { | |
202 | conn = ptr->data; | |
203 | if(conn->id == id && !IsDead(conn)) | |
204 | return conn; | |
205 | } | |
206 | return NULL; | |
207 | } | |
208 | ||
209 | static void | |
7edb4f16 | 210 | conn_add_id_hash(conn_t * conn, int32_t id) |
8d99443b VY |
211 | { |
212 | conn->id = id; | |
213 | rb_dlinkAdd(conn, &conn->node, connid_hash(id)); | |
214 | } | |
215 | ||
216 | static void | |
217 | free_conn(conn_t * conn) | |
218 | { | |
219 | rb_free_rawbuffer(conn->modbuf_out); | |
220 | rb_free_rawbuffer(conn->plainbuf_out); | |
4b6a4d47 | 221 | #ifdef HAVE_LIBZ |
8d99443b VY |
222 | if(IsZip(conn)) |
223 | { | |
224 | zlib_stream_t *stream = conn->stream; | |
225 | inflateEnd(&stream->instream); | |
3202e249 | 226 | deflateEnd(&stream->outstream); |
8d99443b | 227 | } |
4b6a4d47 | 228 | #endif |
8d99443b VY |
229 | rb_free(conn); |
230 | } | |
231 | ||
232 | static void | |
233 | clean_dead_conns(void *unused) | |
234 | { | |
235 | conn_t *conn; | |
236 | rb_dlink_node *ptr, *next; | |
237 | RB_DLINK_FOREACH_SAFE(ptr, next, dead_list.head) | |
238 | { | |
239 | conn = ptr->data; | |
240 | free_conn(conn); | |
241 | } | |
242 | dead_list.tail = dead_list.head = NULL; | |
243 | } | |
244 | ||
245 | ||
246 | static void | |
247 | close_conn(conn_t * conn, int wait_plain, const char *fmt, ...) | |
248 | { | |
249 | va_list ap; | |
3202e249 | 250 | char reason[128]; /* must always be under 250 bytes */ |
8d99443b VY |
251 | char buf[256]; |
252 | int len; | |
253 | if(IsDead(conn)) | |
254 | return; | |
3202e249 | 255 | |
8d99443b VY |
256 | rb_rawbuf_flush(conn->modbuf_out, conn->mod_fd); |
257 | rb_rawbuf_flush(conn->plainbuf_out, conn->plain_fd); | |
258 | rb_close(conn->mod_fd); | |
259 | SetDead(conn); | |
260 | ||
261 | if(!wait_plain || fmt == NULL) | |
262 | { | |
263 | rb_close(conn->plain_fd); | |
3202e249 | 264 | |
8d99443b VY |
265 | if(conn->id >= 0) |
266 | rb_dlinkDelete(&conn->node, connid_hash(conn->id)); | |
267 | rb_dlinkAdd(conn, &conn->node, &dead_list); | |
268 | return; | |
269 | } | |
3202e249 | 270 | rb_setselect(conn->plain_fd, RB_SELECT_WRITE | RB_SELECT_READ, NULL, NULL); |
8d99443b VY |
271 | va_start(ap, fmt); |
272 | rb_vsnprintf(reason, sizeof(reason), fmt, ap); | |
273 | va_end(ap); | |
274 | ||
275 | buf[0] = 'D'; | |
276 | int32_to_buf(&buf[1], conn->id); | |
277 | strcpy(&buf[5], reason); | |
278 | len = (strlen(reason) + 1) + 5; | |
279 | mod_cmd_write_queue(conn->ctl, buf, len); | |
280 | } | |
281 | ||
282 | static conn_t * | |
3202e249 | 283 | make_conn(mod_ctl_t * ctl, rb_fde_t *mod_fd, rb_fde_t *plain_fd) |
8d99443b VY |
284 | { |
285 | conn_t *conn = rb_malloc(sizeof(conn_t)); | |
286 | conn->ctl = ctl; | |
287 | conn->modbuf_out = rb_new_rawbuffer(); | |
288 | conn->plainbuf_out = rb_new_rawbuffer(); | |
289 | conn->mod_fd = mod_fd; | |
290 | conn->plain_fd = plain_fd; | |
291 | conn->id = -1; | |
292 | conn->stream = NULL; | |
293 | rb_set_nb(mod_fd); | |
294 | rb_set_nb(plain_fd); | |
295 | return conn; | |
296 | } | |
297 | ||
4b6a4d47 VY |
298 | static void |
299 | check_handshake_flood(void *unused) | |
300 | { | |
301 | conn_t *conn; | |
302 | rb_dlink_node *ptr, *next; | |
303 | unsigned int count; | |
304 | int i; | |
305 | HASH_WALK_SAFE(i, CONN_HASH_SIZE, ptr, next, connid_hash_table) | |
306 | { | |
307 | conn = ptr->data; | |
308 | if(!IsSSL(conn)) | |
309 | continue; | |
3202e249 | 310 | |
4b6a4d47 VY |
311 | count = rb_ssl_handshake_count(conn->mod_fd); |
312 | /* nothing needs to do this more than twice in ten seconds i don't think */ | |
313 | if(count > 2) | |
314 | close_conn(conn, WAIT_PLAIN, "Handshake flooding"); | |
315 | else | |
316 | rb_ssl_clear_handshake_count(conn->mod_fd); | |
3202e249 VY |
317 | } |
318 | HASH_WALK_END} | |
4b6a4d47 | 319 | |
8d99443b | 320 | static void |
3202e249 | 321 | conn_mod_write_sendq(rb_fde_t *fd, void *data) |
8d99443b VY |
322 | { |
323 | conn_t *conn = data; | |
324 | const char *err; | |
325 | int retlen; | |
326 | if(IsDead(conn)) | |
327 | return; | |
328 | ||
73d6283c VY |
329 | if(IsSSLWWantsR(conn)) |
330 | { | |
331 | ClearSSLWWantsR(conn); | |
332 | conn_mod_read_cb(conn->mod_fd, conn); | |
333 | if(IsDead(conn)) | |
334 | return; | |
335 | } | |
336 | ||
3202e249 | 337 | while((retlen = rb_rawbuf_flush(conn->modbuf_out, fd)) > 0) |
8d99443b VY |
338 | conn->mod_out += retlen; |
339 | ||
340 | if(retlen == 0 || (retlen < 0 && !rb_ignore_errno(errno))) | |
341 | { | |
342 | if(retlen == 0) | |
343 | close_conn(conn, WAIT_PLAIN, "%s", remote_closed); | |
344 | if(IsSSL(conn) && retlen == RB_RW_SSL_ERROR) | |
345 | err = rb_get_ssl_strerror(conn->mod_fd); | |
346 | else | |
347 | err = strerror(errno); | |
348 | close_conn(conn, WAIT_PLAIN, "Write error: %s", err); | |
349 | return; | |
350 | } | |
351 | if(rb_rawbuf_length(conn->modbuf_out) > 0) | |
352 | { | |
73d6283c VY |
353 | if(retlen != RB_RW_SSL_NEED_READ) |
354 | rb_setselect(conn->mod_fd, RB_SELECT_WRITE, conn_mod_write_sendq, conn); | |
355 | else | |
356 | { | |
357 | rb_setselect(conn->mod_fd, RB_SELECT_READ, conn_mod_write_sendq, conn); | |
358 | rb_setselect(conn->mod_fd, RB_SELECT_WRITE, NULL, NULL); | |
359 | SetSSLWWantsR(conn); | |
360 | } | |
8d99443b VY |
361 | } |
362 | else | |
363 | rb_setselect(conn->mod_fd, RB_SELECT_WRITE, NULL, NULL); | |
364 | ||
365 | if(IsCork(conn) && rb_rawbuf_length(conn->modbuf_out) == 0) | |
366 | { | |
367 | ClearCork(conn); | |
368 | conn_plain_read_cb(conn->plain_fd, conn); | |
369 | } | |
370 | ||
371 | } | |
372 | ||
373 | static void | |
374 | conn_mod_write(conn_t * conn, void *data, size_t len) | |
375 | { | |
376 | if(IsDead(conn)) /* no point in queueing to a dead man */ | |
377 | return; | |
378 | rb_rawbuf_append(conn->modbuf_out, data, len); | |
379 | } | |
380 | ||
381 | static void | |
382 | conn_plain_write(conn_t * conn, void *data, size_t len) | |
383 | { | |
384 | if(IsDead(conn)) /* again no point in queueing to dead men */ | |
385 | return; | |
386 | rb_rawbuf_append(conn->plainbuf_out, data, len); | |
387 | } | |
388 | ||
389 | static void | |
390 | mod_cmd_write_queue(mod_ctl_t * ctl, const void *data, size_t len) | |
391 | { | |
392 | mod_ctl_buf_t *ctl_buf; | |
393 | ctl_buf = rb_malloc(sizeof(mod_ctl_buf_t)); | |
394 | ctl_buf->buf = rb_malloc(len); | |
395 | ctl_buf->buflen = len; | |
396 | memcpy(ctl_buf->buf, data, len); | |
397 | ctl_buf->nfds = 0; | |
398 | rb_dlinkAddTail(ctl_buf, &ctl_buf->node, &ctl->writeq); | |
399 | mod_write_ctl(ctl->F, ctl); | |
400 | } | |
401 | ||
402 | #ifdef HAVE_LIBZ | |
403 | static void | |
404 | common_zlib_deflate(conn_t * conn, void *buf, size_t len) | |
405 | { | |
406 | int ret, have; | |
3202e249 | 407 | z_stream *outstream = &((zlib_stream_t *) conn->stream)->outstream; |
8d99443b VY |
408 | outstream->next_in = buf; |
409 | outstream->avail_in = len; | |
410 | outstream->next_out = (Bytef *) outbuf; | |
411 | outstream->avail_out = sizeof(outbuf); | |
412 | ||
413 | ret = deflate(outstream, Z_SYNC_FLUSH); | |
414 | if(ret != Z_OK) | |
415 | { | |
416 | /* deflate error */ | |
417 | close_conn(conn, WAIT_PLAIN, "Deflate failed: %s", zError(ret)); | |
418 | return; | |
419 | } | |
420 | if(outstream->avail_out == 0) | |
421 | { | |
422 | /* avail_out empty */ | |
423 | close_conn(conn, WAIT_PLAIN, "error compressing data, avail_out == 0"); | |
424 | return; | |
425 | } | |
426 | if(outstream->avail_in != 0) | |
427 | { | |
3202e249 | 428 | /* avail_in isn't empty... */ |
8d99443b VY |
429 | close_conn(conn, WAIT_PLAIN, "error compressing data, avail_in != 0"); |
430 | return; | |
431 | } | |
432 | have = sizeof(outbuf) - outstream->avail_out; | |
433 | conn_mod_write(conn, outbuf, have); | |
434 | } | |
435 | ||
436 | static void | |
437 | common_zlib_inflate(conn_t * conn, void *buf, size_t len) | |
438 | { | |
3202e249 VY |
439 | int ret, have = 0; |
440 | ((zlib_stream_t *) conn->stream)->instream.next_in = buf; | |
441 | ((zlib_stream_t *) conn->stream)->instream.avail_in = len; | |
442 | ((zlib_stream_t *) conn->stream)->instream.next_out = (Bytef *) outbuf; | |
443 | ((zlib_stream_t *) conn->stream)->instream.avail_out = sizeof(outbuf); | |
8d99443b | 444 | |
3202e249 | 445 | while(((zlib_stream_t *) conn->stream)->instream.avail_in) |
8d99443b | 446 | { |
3202e249 | 447 | ret = inflate(&((zlib_stream_t *) conn->stream)->instream, Z_NO_FLUSH); |
8d99443b VY |
448 | if(ret != Z_OK) |
449 | { | |
450 | if(!strncmp("ERROR ", buf, 6)) | |
451 | { | |
452 | close_conn(conn, WAIT_PLAIN, "Received uncompressed ERROR"); | |
453 | return; | |
454 | } | |
455 | close_conn(conn, WAIT_PLAIN, "Inflate failed: %s", zError(ret)); | |
456 | return; | |
457 | } | |
3202e249 | 458 | have = sizeof(outbuf) - ((zlib_stream_t *) conn->stream)->instream.avail_out; |
8d99443b | 459 | |
3202e249 | 460 | if(((zlib_stream_t *) conn->stream)->instream.avail_in) |
8d99443b VY |
461 | { |
462 | conn_plain_write(conn, outbuf, have); | |
463 | have = 0; | |
3202e249 VY |
464 | ((zlib_stream_t *) conn->stream)->instream.next_out = (Bytef *) outbuf; |
465 | ((zlib_stream_t *) conn->stream)->instream.avail_out = sizeof(outbuf); | |
8d99443b VY |
466 | } |
467 | } | |
468 | if(have == 0) | |
469 | return; | |
470 | ||
471 | conn_plain_write(conn, outbuf, have); | |
472 | } | |
473 | #endif | |
474 | ||
475 | static int | |
476 | plain_check_cork(conn_t * conn) | |
477 | { | |
478 | if(rb_rawbuf_length(conn->modbuf_out) >= 4096) | |
479 | { | |
480 | /* if we have over 4k pending outbound, don't read until | |
481 | * we've cleared the queue */ | |
482 | SetCork(conn); | |
483 | rb_setselect(conn->plain_fd, RB_SELECT_READ, NULL, NULL); | |
484 | /* try to write */ | |
485 | conn_mod_write_sendq(conn->mod_fd, conn); | |
486 | return 1; | |
487 | } | |
488 | return 0; | |
489 | } | |
490 | ||
491 | ||
492 | static void | |
3202e249 | 493 | conn_plain_read_cb(rb_fde_t *fd, void *data) |
8d99443b VY |
494 | { |
495 | conn_t *conn = data; | |
496 | int length = 0; | |
497 | if(conn == NULL) | |
498 | return; | |
499 | ||
500 | if(IsDead(conn)) | |
501 | return; | |
502 | ||
503 | if(plain_check_cork(conn)) | |
504 | return; | |
505 | ||
3202e249 | 506 | while(1) |
8d99443b VY |
507 | { |
508 | if(IsDead(conn)) | |
509 | return; | |
510 | ||
511 | length = rb_read(conn->plain_fd, inbuf, sizeof(inbuf)); | |
512 | ||
513 | if(length == 0 || (length < 0 && !rb_ignore_errno(errno))) | |
514 | { | |
515 | close_conn(conn, NO_WAIT, NULL); | |
516 | return; | |
517 | } | |
518 | ||
519 | if(length < 0) | |
520 | { | |
521 | rb_setselect(conn->plain_fd, RB_SELECT_READ, conn_plain_read_cb, conn); | |
522 | conn_mod_write_sendq(conn->mod_fd, conn); | |
523 | return; | |
524 | } | |
525 | conn->plain_in += length; | |
526 | ||
527 | #ifdef HAVE_LIBZ | |
528 | if(IsZip(conn)) | |
529 | common_zlib_deflate(conn, inbuf, length); | |
530 | else | |
531 | #endif | |
532 | conn_mod_write(conn, inbuf, length); | |
533 | if(IsDead(conn)) | |
534 | return; | |
535 | if(plain_check_cork(conn)) | |
536 | return; | |
537 | } | |
538 | } | |
539 | ||
540 | static void | |
3202e249 | 541 | conn_mod_read_cb(rb_fde_t *fd, void *data) |
8d99443b VY |
542 | { |
543 | conn_t *conn = data; | |
544 | const char *err = remote_closed; | |
545 | int length; | |
546 | if(conn == NULL) | |
547 | return; | |
548 | if(IsDead(conn)) | |
549 | return; | |
550 | ||
73d6283c VY |
551 | if(IsSSLRWantsW(conn)) |
552 | { | |
553 | ClearSSLRWantsW(conn); | |
554 | conn_mod_write_sendq(conn->mod_fd, conn); | |
555 | if(IsDead(conn)) | |
556 | return; | |
557 | } | |
558 | ||
3202e249 | 559 | while(1) |
8d99443b VY |
560 | { |
561 | if(IsDead(conn)) | |
562 | return; | |
563 | ||
564 | length = rb_read(conn->mod_fd, inbuf, sizeof(inbuf)); | |
565 | ||
566 | if(length == 0 || (length < 0 && !rb_ignore_errno(errno))) | |
567 | { | |
3202e249 VY |
568 | if(length == 0) |
569 | { | |
8d99443b VY |
570 | close_conn(conn, WAIT_PLAIN, "%s", remote_closed); |
571 | return; | |
572 | } | |
573 | ||
574 | if(IsSSL(conn) && length == RB_RW_SSL_ERROR) | |
575 | err = rb_get_ssl_strerror(conn->mod_fd); | |
576 | else | |
577 | err = strerror(errno); | |
578 | close_conn(conn, WAIT_PLAIN, "Read error: %s", err); | |
579 | return; | |
580 | } | |
581 | if(length < 0) | |
582 | { | |
73d6283c VY |
583 | if(length != RB_RW_SSL_NEED_WRITE) |
584 | rb_setselect(conn->mod_fd, RB_SELECT_READ, conn_mod_read_cb, conn); | |
585 | else | |
586 | { | |
587 | rb_setselect(conn->mod_fd, RB_SELECT_READ, NULL, NULL); | |
588 | rb_setselect(conn->mod_fd, RB_SELECT_WRITE, conn_mod_read_cb, conn); | |
589 | SetSSLRWantsW(conn); | |
590 | } | |
8d99443b VY |
591 | conn_plain_write_sendq(conn->plain_fd, conn); |
592 | return; | |
3202e249 | 593 | } |
8d99443b VY |
594 | conn->mod_in += length; |
595 | #ifdef HAVE_LIBZ | |
596 | if(IsZip(conn)) | |
597 | common_zlib_inflate(conn, inbuf, length); | |
598 | else | |
599 | #endif | |
600 | conn_plain_write(conn, inbuf, length); | |
601 | } | |
602 | } | |
603 | ||
604 | static void | |
3202e249 | 605 | conn_plain_write_sendq(rb_fde_t *fd, void *data) |
8d99443b VY |
606 | { |
607 | conn_t *conn = data; | |
608 | int retlen; | |
609 | ||
610 | if(IsDead(conn)) | |
611 | return; | |
612 | ||
3202e249 | 613 | while((retlen = rb_rawbuf_flush(conn->plainbuf_out, fd)) > 0) |
8d99443b VY |
614 | { |
615 | conn->plain_out += retlen; | |
616 | } | |
617 | if(retlen == 0 || (retlen < 0 && !rb_ignore_errno(errno))) | |
618 | { | |
619 | close_conn(data, NO_WAIT, NULL); | |
620 | return; | |
621 | } | |
3202e249 | 622 | |
8d99443b VY |
623 | |
624 | if(rb_rawbuf_length(conn->plainbuf_out) > 0) | |
625 | rb_setselect(conn->plain_fd, RB_SELECT_WRITE, conn_plain_write_sendq, conn); | |
626 | else | |
627 | rb_setselect(conn->plain_fd, RB_SELECT_WRITE, NULL, NULL); | |
628 | } | |
629 | ||
630 | static int | |
631 | maxconn(void) | |
632 | { | |
633 | #if defined(RLIMIT_NOFILE) && defined(HAVE_SYS_RESOURCE_H) | |
634 | struct rlimit limit; | |
635 | ||
636 | if(!getrlimit(RLIMIT_NOFILE, &limit)) | |
637 | { | |
638 | return limit.rlim_cur; | |
639 | } | |
640 | #endif /* RLIMIT_FD_MAX */ | |
641 | return MAXCONNECTIONS; | |
642 | } | |
643 | ||
644 | static void | |
3202e249 | 645 | ssl_process_accept_cb(rb_fde_t *F, int status, struct sockaddr *addr, rb_socklen_t len, void *data) |
8d99443b VY |
646 | { |
647 | conn_t *conn = data; | |
648 | if(status == RB_OK) | |
649 | { | |
650 | conn_mod_read_cb(conn->mod_fd, conn); | |
651 | conn_plain_read_cb(conn->plain_fd, conn); | |
652 | return; | |
653 | } | |
a444bb78 | 654 | /* ircd doesn't care about the reason for this */ |
8d99443b VY |
655 | close_conn(conn, NO_WAIT, 0); |
656 | return; | |
657 | } | |
658 | ||
659 | static void | |
3202e249 | 660 | ssl_process_connect_cb(rb_fde_t *F, int status, void *data) |
8d99443b VY |
661 | { |
662 | conn_t *conn = data; | |
663 | if(status == RB_OK) | |
664 | { | |
665 | conn_mod_read_cb(conn->mod_fd, conn); | |
666 | conn_plain_read_cb(conn->plain_fd, conn); | |
8d99443b | 667 | } |
a444bb78 JT |
668 | else if(status == RB_ERR_TIMEOUT) |
669 | close_conn(conn, WAIT_PLAIN, "SSL handshake timed out"); | |
670 | else if(status == RB_ERROR_SSL) | |
671 | close_conn(conn, WAIT_PLAIN, "%s", rb_get_ssl_strerror(conn->mod_fd)); | |
672 | else | |
673 | close_conn(conn, WAIT_PLAIN, "SSL handshake failed"); | |
8d99443b VY |
674 | } |
675 | ||
676 | ||
677 | static void | |
678 | ssl_process_accept(mod_ctl_t * ctl, mod_ctl_buf_t * ctlb) | |
679 | { | |
680 | conn_t *conn; | |
7edb4f16 | 681 | int32_t id; |
8d99443b VY |
682 | |
683 | conn = make_conn(ctl, ctlb->F[0], ctlb->F[1]); | |
684 | ||
685 | id = buf_to_int32(&ctlb->buf[1]); | |
686 | ||
687 | if(id >= 0) | |
688 | conn_add_id_hash(conn, id); | |
689 | SetSSL(conn); | |
690 | ||
691 | if(rb_get_type(conn->mod_fd) & RB_FD_UNKNOWN) | |
692 | { | |
3202e249 | 693 | |
8d99443b VY |
694 | rb_set_type(conn->mod_fd, RB_FD_SOCKET); |
695 | } | |
696 | if(rb_get_type(conn->mod_fd) == RB_FD_UNKNOWN) | |
697 | rb_set_type(conn->plain_fd, RB_FD_SOCKET); | |
698 | ||
699 | rb_ssl_start_accepted(ctlb->F[0], ssl_process_accept_cb, conn, 10); | |
700 | } | |
701 | ||
702 | static void | |
703 | ssl_process_connect(mod_ctl_t * ctl, mod_ctl_buf_t * ctlb) | |
704 | { | |
705 | conn_t *conn; | |
7edb4f16 | 706 | int32_t id; |
8d99443b VY |
707 | conn = make_conn(ctl, ctlb->F[0], ctlb->F[1]); |
708 | ||
709 | id = buf_to_int32(&ctlb->buf[1]); | |
710 | ||
711 | if(id >= 0) | |
712 | conn_add_id_hash(conn, id); | |
713 | SetSSL(conn); | |
714 | ||
715 | if(rb_get_type(conn->mod_fd) == RB_FD_UNKNOWN) | |
716 | rb_set_type(conn->mod_fd, RB_FD_SOCKET); | |
717 | ||
718 | if(rb_get_type(conn->mod_fd) == RB_FD_UNKNOWN) | |
719 | rb_set_type(conn->plain_fd, RB_FD_SOCKET); | |
720 | ||
721 | ||
722 | rb_ssl_start_connected(ctlb->F[0], ssl_process_connect_cb, conn, 10); | |
723 | } | |
724 | ||
725 | static void | |
726 | process_stats(mod_ctl_t * ctl, mod_ctl_buf_t * ctlb) | |
727 | { | |
728 | char outstat[512]; | |
729 | conn_t *conn; | |
730 | const char *odata; | |
7edb4f16 | 731 | int32_t id; |
8d99443b VY |
732 | |
733 | id = buf_to_int32(&ctlb->buf[1]); | |
734 | ||
735 | if(id < 0) | |
736 | return; | |
3202e249 | 737 | |
8d99443b VY |
738 | odata = &ctlb->buf[5]; |
739 | conn = conn_find_by_id(id); | |
740 | ||
741 | if(conn == NULL) | |
742 | return; | |
743 | ||
744 | rb_snprintf(outstat, sizeof(outstat), "S %s %llu %llu %llu %llu", odata, | |
745 | conn->plain_out, conn->mod_in, conn->plain_in, conn->mod_out); | |
746 | conn->plain_out = 0; | |
747 | conn->plain_in = 0; | |
748 | conn->mod_in = 0; | |
749 | conn->mod_out = 0; | |
750 | mod_cmd_write_queue(ctl, outstat, strlen(outstat) + 1); /* +1 is so we send the \0 as well */ | |
751 | } | |
752 | ||
753 | #ifdef HAVE_LIBZ | |
754 | static void | |
3202e249 | 755 | zlib_send_zip_ready(mod_ctl_t * ctl, conn_t * conn) |
8d99443b VY |
756 | { |
757 | char buf[5]; | |
3202e249 | 758 | |
8d99443b VY |
759 | buf[0] = 'R'; |
760 | int32_to_buf(&buf[1], conn->id); | |
761 | mod_cmd_write_queue(conn->ctl, buf, sizeof(buf)); | |
762 | } | |
763 | ||
764 | static void | |
765 | zlib_process(mod_ctl_t * ctl, mod_ctl_buf_t * ctlb) | |
766 | { | |
7edb4f16 | 767 | uint8_t level; |
8d99443b | 768 | size_t recvqlen; |
7edb4f16 | 769 | size_t hdr = (sizeof(uint8_t) * 2) + sizeof(int32_t); |
8d99443b VY |
770 | void *recvq_start; |
771 | z_stream *instream, *outstream; | |
772 | conn_t *conn; | |
7edb4f16 | 773 | int32_t id; |
8d99443b VY |
774 | |
775 | conn = make_conn(ctl, ctlb->F[0], ctlb->F[1]); | |
776 | if(rb_get_type(conn->mod_fd) == RB_FD_UNKNOWN) | |
777 | rb_set_type(conn->mod_fd, RB_FD_SOCKET); | |
778 | ||
779 | if(rb_get_type(conn->plain_fd) == RB_FD_UNKNOWN) | |
780 | rb_set_type(conn->plain_fd, RB_FD_SOCKET); | |
781 | ||
782 | id = buf_to_int32(&ctlb->buf[1]); | |
783 | conn_add_id_hash(conn, id); | |
784 | ||
3202e249 | 785 | level = (uint8_t)ctlb->buf[5]; |
8d99443b VY |
786 | |
787 | recvqlen = ctlb->buflen - hdr; | |
788 | recvq_start = &ctlb->buf[6]; | |
789 | ||
790 | SetZip(conn); | |
791 | conn->stream = rb_malloc(sizeof(zlib_stream_t)); | |
3202e249 VY |
792 | instream = &((zlib_stream_t *) conn->stream)->instream; |
793 | outstream = &((zlib_stream_t *) conn->stream)->outstream; | |
794 | ||
8d99443b VY |
795 | instream->total_in = 0; |
796 | instream->total_out = 0; | |
797 | instream->zalloc = (alloc_func) ssld_alloc; | |
798 | instream->zfree = (free_func) ssld_free; | |
799 | instream->data_type = Z_ASCII; | |
3202e249 | 800 | inflateInit(&((zlib_stream_t *) conn->stream)->instream); |
8d99443b VY |
801 | |
802 | outstream->total_in = 0; | |
803 | outstream->total_out = 0; | |
804 | outstream->zalloc = (alloc_func) ssld_alloc; | |
805 | outstream->zfree = (free_func) ssld_free; | |
806 | outstream->data_type = Z_ASCII; | |
807 | ||
808 | if(level > 9) | |
809 | level = Z_DEFAULT_COMPRESSION; | |
810 | ||
3202e249 | 811 | deflateInit(&((zlib_stream_t *) conn->stream)->outstream, level); |
8d99443b VY |
812 | if(recvqlen > 0) |
813 | common_zlib_inflate(conn, recvq_start, recvqlen); | |
814 | zlib_send_zip_ready(ctl, conn); | |
815 | conn_mod_read_cb(conn->mod_fd, conn); | |
816 | conn_plain_read_cb(conn->plain_fd, conn); | |
817 | return; | |
818 | ||
819 | } | |
820 | #endif | |
821 | ||
822 | static void | |
823 | init_prng(mod_ctl_t * ctl, mod_ctl_buf_t * ctl_buf) | |
824 | { | |
825 | char *path; | |
826 | prng_seed_t seed_type; | |
3202e249 VY |
827 | |
828 | seed_type = (prng_seed_t) ctl_buf->buf[1]; | |
8d99443b VY |
829 | path = &ctl_buf->buf[2]; |
830 | rb_init_prng(path, seed_type); | |
831 | } | |
832 | ||
833 | ||
834 | static void | |
835 | ssl_new_keys(mod_ctl_t * ctl, mod_ctl_buf_t * ctl_buf) | |
836 | { | |
837 | char *buf; | |
838 | char *cert, *key, *dhparam; | |
839 | ||
840 | buf = &ctl_buf->buf[2]; | |
841 | cert = buf; | |
842 | buf += strlen(cert) + 1; | |
843 | key = buf; | |
844 | buf += strlen(key) + 1; | |
845 | dhparam = buf; | |
846 | if(strlen(dhparam) == 0) | |
847 | dhparam = NULL; | |
848 | ||
849 | if(!rb_setup_ssl_server(cert, key, dhparam)) | |
850 | { | |
851 | const char *invalid = "I"; | |
852 | mod_cmd_write_queue(ctl, invalid, strlen(invalid)); | |
853 | return; | |
3202e249 | 854 | } |
8d99443b VY |
855 | } |
856 | ||
857 | static void | |
3202e249 | 858 | send_nossl_support(mod_ctl_t * ctl, mod_ctl_buf_t * ctlb) |
8d99443b VY |
859 | { |
860 | static const char *nossl_cmd = "N"; | |
861 | conn_t *conn; | |
7edb4f16 | 862 | int32_t id; |
8d99443b VY |
863 | |
864 | if(ctlb != NULL) | |
3202e249 | 865 | { |
8d99443b VY |
866 | conn = make_conn(ctl, ctlb->F[0], ctlb->F[1]); |
867 | id = buf_to_int32(&ctlb->buf[1]); | |
868 | ||
869 | if(id >= 0) | |
870 | conn_add_id_hash(conn, id); | |
871 | close_conn(conn, WAIT_PLAIN, "libratbox reports no SSL/TLS support"); | |
3202e249 VY |
872 | } |
873 | mod_cmd_write_queue(ctl, nossl_cmd, strlen(nossl_cmd)); | |
8d99443b VY |
874 | } |
875 | ||
876 | static void | |
3202e249 | 877 | send_i_am_useless(mod_ctl_t * ctl) |
8d99443b VY |
878 | { |
879 | static const char *useless = "U"; | |
880 | mod_cmd_write_queue(ctl, useless, strlen(useless)); | |
881 | } | |
882 | ||
883 | static void | |
3202e249 | 884 | send_nozlib_support(mod_ctl_t * ctl, mod_ctl_buf_t * ctlb) |
8d99443b VY |
885 | { |
886 | static const char *nozlib_cmd = "z"; | |
887 | conn_t *conn; | |
7edb4f16 | 888 | int32_t id; |
8d99443b VY |
889 | if(ctlb != NULL) |
890 | { | |
891 | conn = make_conn(ctl, ctlb->F[0], ctlb->F[1]); | |
892 | id = buf_to_int32(&ctlb->buf[1]); | |
893 | ||
894 | if(id >= 0) | |
895 | conn_add_id_hash(conn, id); | |
896 | close_conn(conn, WAIT_PLAIN, "libratbox reports no zlib support"); | |
3202e249 | 897 | } |
8d99443b VY |
898 | mod_cmd_write_queue(ctl, nozlib_cmd, strlen(nozlib_cmd)); |
899 | } | |
900 | ||
901 | static void | |
902 | mod_process_cmd_recv(mod_ctl_t * ctl) | |
903 | { | |
904 | rb_dlink_node *ptr, *next; | |
905 | mod_ctl_buf_t *ctl_buf; | |
906 | ||
907 | RB_DLINK_FOREACH_SAFE(ptr, next, ctl->readq.head) | |
908 | { | |
909 | ctl_buf = ptr->data; | |
910 | ||
911 | switch (*ctl_buf->buf) | |
912 | { | |
913 | case 'A': | |
914 | { | |
915 | if(!ssl_ok) | |
916 | { | |
917 | send_nossl_support(ctl, ctl_buf); | |
918 | break; | |
919 | } | |
920 | ssl_process_accept(ctl, ctl_buf); | |
921 | break; | |
922 | } | |
923 | case 'C': | |
924 | { | |
925 | if(!ssl_ok) | |
926 | { | |
927 | send_nossl_support(ctl, ctl_buf); | |
928 | break; | |
929 | } | |
930 | ssl_process_connect(ctl, ctl_buf); | |
931 | break; | |
932 | } | |
933 | ||
934 | case 'K': | |
935 | { | |
936 | if(!ssl_ok) | |
937 | { | |
938 | send_nossl_support(ctl, ctl_buf); | |
939 | break; | |
940 | } | |
941 | ssl_new_keys(ctl, ctl_buf); | |
942 | break; | |
943 | } | |
944 | case 'I': | |
3202e249 VY |
945 | init_prng(ctl, ctl_buf); |
946 | break; | |
8d99443b VY |
947 | case 'S': |
948 | { | |
949 | process_stats(ctl, ctl_buf); | |
950 | break; | |
951 | } | |
952 | #ifdef HAVE_LIBZ | |
953 | case 'Z': | |
954 | { | |
955 | /* just zlib only */ | |
956 | zlib_process(ctl, ctl_buf); | |
957 | break; | |
958 | } | |
959 | #else | |
960 | case 'Y': | |
961 | case 'Z': | |
21192997 | 962 | send_nozlib_support(ctl, ctl_buf); |
8d99443b | 963 | break; |
3202e249 | 964 | |
8d99443b VY |
965 | #endif |
966 | default: | |
967 | break; | |
968 | /* Log unknown commands */ | |
969 | } | |
970 | rb_dlinkDelete(ptr, &ctl->readq); | |
971 | rb_free(ctl_buf->buf); | |
972 | rb_free(ctl_buf); | |
973 | } | |
974 | ||
975 | } | |
976 | ||
977 | ||
978 | ||
979 | static void | |
3202e249 | 980 | mod_read_ctl(rb_fde_t *F, void *data) |
8d99443b VY |
981 | { |
982 | mod_ctl_buf_t *ctl_buf; | |
983 | mod_ctl_t *ctl = data; | |
984 | int retlen; | |
985 | ||
986 | do | |
987 | { | |
988 | ctl_buf = rb_malloc(sizeof(mod_ctl_buf_t)); | |
989 | ctl_buf->buf = rb_malloc(READBUF_SIZE); | |
990 | ctl_buf->buflen = READBUF_SIZE; | |
991 | retlen = rb_recv_fd_buf(ctl->F, ctl_buf->buf, ctl_buf->buflen, ctl_buf->F, | |
992 | MAXPASSFD); | |
993 | if(retlen <= 0) | |
994 | { | |
995 | rb_free(ctl_buf->buf); | |
996 | rb_free(ctl_buf); | |
997 | } | |
998 | else | |
999 | { | |
1000 | ctl_buf->buflen = retlen; | |
1001 | rb_dlinkAddTail(ctl_buf, &ctl_buf->node, &ctl->readq); | |
1002 | } | |
1003 | } | |
3202e249 | 1004 | while(retlen > 0); |
8d99443b VY |
1005 | |
1006 | if(retlen == 0 || (retlen < 0 && !rb_ignore_errno(errno))) | |
1007 | exit(0); | |
1008 | ||
1009 | mod_process_cmd_recv(ctl); | |
1010 | rb_setselect(ctl->F, RB_SELECT_READ, mod_read_ctl, ctl); | |
1011 | } | |
1012 | ||
1013 | static void | |
3202e249 | 1014 | mod_write_ctl(rb_fde_t *F, void *data) |
8d99443b VY |
1015 | { |
1016 | mod_ctl_t *ctl = data; | |
1017 | mod_ctl_buf_t *ctl_buf; | |
1018 | rb_dlink_node *ptr, *next; | |
1019 | int retlen, x; | |
1020 | ||
1021 | RB_DLINK_FOREACH_SAFE(ptr, next, ctl->writeq.head) | |
1022 | { | |
1023 | ctl_buf = ptr->data; | |
1024 | retlen = rb_send_fd_buf(ctl->F, ctl_buf->F, ctl_buf->nfds, ctl_buf->buf, | |
3202e249 | 1025 | ctl_buf->buflen, ppid); |
8d99443b VY |
1026 | if(retlen > 0) |
1027 | { | |
1028 | rb_dlinkDelete(ptr, &ctl->writeq); | |
3202e249 | 1029 | for(x = 0; x < ctl_buf->nfds; x++) |
8d99443b VY |
1030 | rb_close(ctl_buf->F[x]); |
1031 | rb_free(ctl_buf->buf); | |
1032 | rb_free(ctl_buf); | |
1033 | ||
1034 | } | |
1035 | if(retlen == 0 || (retlen < 0 && !rb_ignore_errno(errno))) | |
3202e249 VY |
1036 | exit(0); |
1037 | ||
8d99443b VY |
1038 | rb_setselect(ctl->F, RB_SELECT_WRITE, mod_write_ctl, ctl); |
1039 | } | |
1040 | } | |
1041 | ||
1042 | ||
1043 | static void | |
3202e249 | 1044 | read_pipe_ctl(rb_fde_t *F, void *data) |
8d99443b VY |
1045 | { |
1046 | int retlen; | |
3202e249 | 1047 | while((retlen = rb_read(F, inbuf, sizeof(inbuf))) > 0) |
8d99443b VY |
1048 | { |
1049 | ;; /* we don't do anything with the pipe really, just care if the other process dies.. */ | |
1050 | } | |
1051 | if(retlen == 0 || (retlen < 0 && !rb_ignore_errno(errno))) | |
1052 | exit(0); | |
1053 | rb_setselect(F, RB_SELECT_READ, read_pipe_ctl, NULL); | |
1054 | ||
1055 | } | |
1056 | ||
1057 | int | |
1058 | main(int argc, char **argv) | |
1059 | { | |
3202e249 | 1060 | const char *s_ctlfd, *s_pipe, *s_pid; |
8d99443b VY |
1061 | int ctlfd, pipefd, x, maxfd; |
1062 | maxfd = maxconn(); | |
3202e249 | 1063 | |
8d99443b VY |
1064 | s_ctlfd = getenv("CTL_FD"); |
1065 | s_pipe = getenv("CTL_PIPE"); | |
3202e249 | 1066 | s_pid = getenv("CTL_PPID"); |
8d99443b | 1067 | |
3202e249 | 1068 | if(s_ctlfd == NULL || s_pipe == NULL || s_pid == NULL) |
8d99443b | 1069 | { |
3202e249 VY |
1070 | fprintf(stderr, |
1071 | "This is ircd-ratbox ssld. You know you aren't supposed to run me directly?\n"); | |
1072 | fprintf(stderr, | |
1073 | "You get an Id tag for this: $Id$\n"); | |
8d99443b VY |
1074 | fprintf(stderr, "Have a nice life\n"); |
1075 | exit(1); | |
1076 | } | |
1077 | ||
1078 | ctlfd = atoi(s_ctlfd); | |
1079 | pipefd = atoi(s_pipe); | |
3202e249 VY |
1080 | ppid = atoi(s_pid); |
1081 | x = 0; | |
1082 | #ifndef _WIN32 | |
1083 | for(x = 0; x < maxfd; x++) | |
8d99443b VY |
1084 | { |
1085 | if(x != ctlfd && x != pipefd && x > 2) | |
1086 | close(x); | |
1087 | } | |
8d99443b VY |
1088 | x = open("/dev/null", O_RDWR); |
1089 | if(x >= 0) | |
1090 | { | |
1091 | if(ctlfd != 0 && pipefd != 0) | |
1092 | dup2(x, 0); | |
1093 | if(ctlfd != 1 && pipefd != 1) | |
1094 | dup2(x, 1); | |
1095 | if(ctlfd != 2 && pipefd != 2) | |
1096 | dup2(x, 2); | |
1097 | if(x > 2) | |
1098 | close(x); | |
1099 | } | |
3202e249 | 1100 | #endif |
8d99443b VY |
1101 | setup_signals(); |
1102 | rb_lib_init(NULL, NULL, NULL, 0, maxfd, 1024, 4096); | |
1103 | rb_init_rawbuffers(1024); | |
3202e249 | 1104 | ssl_ok = rb_supports_ssl(); |
8d99443b VY |
1105 | mod_ctl = rb_malloc(sizeof(mod_ctl_t)); |
1106 | mod_ctl->F = rb_open(ctlfd, RB_FD_SOCKET, "ircd control socket"); | |
1107 | mod_ctl->F_pipe = rb_open(pipefd, RB_FD_PIPE, "ircd pipe"); | |
1108 | rb_set_nb(mod_ctl->F); | |
1109 | rb_set_nb(mod_ctl->F_pipe); | |
1110 | rb_event_addish("clean_dead_conns", clean_dead_conns, NULL, 10); | |
4b6a4d47 | 1111 | rb_event_add("check_handshake_flood", check_handshake_flood, NULL, 10); |
8d99443b VY |
1112 | read_pipe_ctl(mod_ctl->F_pipe, NULL); |
1113 | mod_read_ctl(mod_ctl->F, mod_ctl); | |
1114 | if(!zlib_ok && !ssl_ok) | |
1115 | { | |
1116 | /* this is really useless... */ | |
1117 | send_i_am_useless(mod_ctl); | |
1118 | /* sleep until the ircd kills us */ | |
3202e249 | 1119 | rb_sleep(2 << 30, 0); |
8d99443b VY |
1120 | exit(1); |
1121 | } | |
1122 | ||
1123 | if(!zlib_ok) | |
1124 | send_nozlib_support(mod_ctl, NULL); | |
1125 | if(!ssl_ok) | |
1126 | send_nossl_support(mod_ctl, NULL); | |
1127 | rb_lib_loop(0); | |
1128 | return 0; | |
1129 | } | |
1130 | ||
1131 | ||
3202e249 | 1132 | #ifndef _WIN32 |
8d99443b VY |
1133 | static void |
1134 | dummy_handler(int sig) | |
1135 | { | |
1136 | return; | |
1137 | } | |
3202e249 | 1138 | #endif |
8d99443b VY |
1139 | |
1140 | static void | |
1141 | setup_signals() | |
1142 | { | |
3202e249 | 1143 | #ifndef _WIN32 |
8d99443b VY |
1144 | struct sigaction act; |
1145 | ||
1146 | act.sa_flags = 0; | |
1147 | act.sa_handler = SIG_IGN; | |
1148 | sigemptyset(&act.sa_mask); | |
1149 | sigaddset(&act.sa_mask, SIGPIPE); | |
1150 | sigaddset(&act.sa_mask, SIGALRM); | |
1151 | #ifdef SIGTRAP | |
1152 | sigaddset(&act.sa_mask, SIGTRAP); | |
1153 | #endif | |
1154 | ||
1155 | #ifdef SIGWINCH | |
1156 | sigaddset(&act.sa_mask, SIGWINCH); | |
1157 | sigaction(SIGWINCH, &act, 0); | |
1158 | #endif | |
1159 | sigaction(SIGPIPE, &act, 0); | |
1160 | #ifdef SIGTRAP | |
1161 | sigaction(SIGTRAP, &act, 0); | |
1162 | #endif | |
1163 | ||
1164 | act.sa_handler = dummy_handler; | |
1165 | sigaction(SIGALRM, &act, 0); | |
3202e249 | 1166 | #endif |
8d99443b | 1167 | } |