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db137867 AC |
1 | /* |
2 | * ircd-ratbox: A slightly useful ircd. | |
3 | * ratbox_lib.c: libircd initialization functions at the like | |
4 | * | |
5 | * Copyright (C) 2005,2006 ircd-ratbox development team | |
6 | * Copyright (C) 2005,2006 Aaron Sethman <androsyn@ratbox.org> | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2 of the License, or | |
11 | * (at your option) any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the Free Software | |
20 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 | |
21 | * USA | |
22 | * | |
030272f3 | 23 | * $Id: ratbox_lib.c 26282 2008-12-10 20:33:21Z androsyn $ |
db137867 AC |
24 | */ |
25 | ||
26 | #include <libratbox_config.h> | |
27 | #include <ratbox_lib.h> | |
28 | #include <commio-int.h> | |
030272f3 | 29 | #include <commio-ssl.h> |
db137867 AC |
30 | |
31 | static log_cb *rb_log; | |
32 | static restart_cb *rb_restart; | |
33 | static die_cb *rb_die; | |
34 | ||
35 | static struct timeval rb_time; | |
36 | static char errbuf[512]; | |
37 | ||
38 | /* this doesn't do locales...oh well i guess */ | |
39 | ||
40 | static const char *months[] = { | |
3202e249 VY |
41 | "January", "February", "March", "April", |
42 | "May", "June", "July", "August", | |
43 | "September", "October", "November", "December" | |
db137867 AC |
44 | }; |
45 | ||
46 | static const char *weekdays[] = { | |
3202e249 VY |
47 | "Sunday", "Monday", "Tuesday", "Wednesday", |
48 | "Thursday", "Friday", "Saturday" | |
db137867 AC |
49 | }; |
50 | ||
51 | static const char *s_month[] = { | |
52 | "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", | |
53 | "Aug", "Sep", "Oct", "Nov", "Dec" | |
3202e249 | 54 | }; |
db137867 AC |
55 | |
56 | static const char *s_weekdays[] = { | |
57 | "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" | |
58 | }; | |
59 | ||
60 | char * | |
61 | rb_ctime(const time_t t, char *buf, size_t len) | |
62 | { | |
63 | char *p; | |
64 | struct tm *tp; | |
65 | static char timex[128]; | |
66 | size_t tlen; | |
67 | #if defined(HAVE_GMTIME_R) | |
68 | struct tm tmr; | |
69 | tp = gmtime_r(&t, &tmr); | |
70 | #else | |
71 | tp = gmtime(&t); | |
72 | #endif | |
db137867 AC |
73 | if(buf == NULL) |
74 | { | |
75 | p = timex; | |
76 | tlen = sizeof(timex); | |
3202e249 VY |
77 | } |
78 | else | |
79 | { | |
db137867 AC |
80 | p = buf; |
81 | tlen = len; | |
82 | } | |
83 | ||
56c1612f AC |
84 | if(rb_unlikely(tp == NULL)) |
85 | { | |
86 | rb_strlcpy(p, "", tlen); | |
87 | return (p); | |
88 | } | |
89 | ||
db137867 | 90 | rb_snprintf(p, tlen, "%s %s %d %02u:%02u:%02u %d", |
3202e249 VY |
91 | s_weekdays[tp->tm_wday], s_month[tp->tm_mon], |
92 | tp->tm_mday, tp->tm_hour, tp->tm_min, tp->tm_sec, tp->tm_year + 1900); | |
93 | return (p); | |
db137867 AC |
94 | } |
95 | ||
96 | ||
97 | /* I hate this..but its sort of ircd standard now.. */ | |
98 | char * | |
99 | rb_date(const time_t t, char *buf, size_t len) | |
100 | { | |
101 | struct tm *gm; | |
102 | #if defined(HAVE_GMTIME_R) | |
103 | struct tm gmbuf; | |
104 | gm = gmtime_r(&t, &gmbuf); | |
105 | #else | |
106 | gm = gmtime(&t); | |
107 | #endif | |
108 | ||
c2ac22cc | 109 | if(rb_unlikely(gm == NULL)) |
db137867 | 110 | { |
3202e249 VY |
111 | rb_strlcpy(buf, "", len); |
112 | return (buf); | |
db137867 | 113 | } |
3202e249 VY |
114 | |
115 | rb_snprintf(buf, len, "%s %s %d %d -- %02u:%02u:%02u +00:00", | |
116 | weekdays[gm->tm_wday], months[gm->tm_mon], gm->tm_mday, | |
117 | gm->tm_year + 1900, gm->tm_hour, gm->tm_min, gm->tm_sec); | |
118 | return (buf); | |
db137867 AC |
119 | } |
120 | ||
121 | time_t | |
122 | rb_current_time(void) | |
123 | { | |
124 | return rb_time.tv_sec; | |
125 | } | |
126 | ||
127 | const struct timeval * | |
128 | rb_current_time_tv(void) | |
129 | { | |
130 | return &rb_time; | |
131 | } | |
132 | ||
133 | void | |
134 | rb_lib_log(const char *format, ...) | |
135 | { | |
136 | va_list args; | |
137 | if(rb_log == NULL) | |
138 | return; | |
139 | va_start(args, format); | |
3202e249 | 140 | rb_vsnprintf(errbuf, sizeof(errbuf), format, args); |
db137867 AC |
141 | va_end(args); |
142 | rb_log(errbuf); | |
143 | } | |
144 | ||
145 | void | |
146 | rb_lib_die(const char *format, ...) | |
147 | { | |
148 | va_list args; | |
149 | if(rb_die == NULL) | |
150 | abort(); | |
151 | va_start(args, format); | |
3202e249 | 152 | rb_vsnprintf(errbuf, sizeof(errbuf), format, args); |
db137867 AC |
153 | va_end(args); |
154 | rb_die(errbuf); | |
155 | } | |
156 | ||
157 | void | |
158 | rb_lib_restart(const char *format, ...) | |
159 | { | |
160 | va_list args; | |
161 | if(rb_restart == NULL) | |
162 | abort(); | |
163 | va_start(args, format); | |
3202e249 | 164 | rb_vsnprintf(errbuf, sizeof(errbuf), format, args); |
db137867 AC |
165 | va_end(args); |
166 | rb_restart(errbuf); | |
6993ae27 | 167 | abort(); |
db137867 AC |
168 | } |
169 | ||
170 | void | |
171 | rb_set_time(void) | |
172 | { | |
173 | struct timeval newtime; | |
174 | ||
c2ac22cc | 175 | if(rb_unlikely(rb_gettimeofday(&newtime, NULL) == -1)) |
db137867 AC |
176 | { |
177 | rb_lib_log("Clock Failure (%s)", strerror(errno)); | |
178 | rb_lib_restart("Clock Failure"); | |
179 | } | |
180 | ||
181 | if(newtime.tv_sec < rb_time.tv_sec) | |
182 | rb_set_back_events(rb_time.tv_sec - newtime.tv_sec); | |
183 | ||
184 | memcpy(&rb_time, &newtime, sizeof(struct timeval)); | |
185 | } | |
186 | ||
3202e249 VY |
187 | extern const char *libratbox_serno; |
188 | ||
db137867 AC |
189 | const char * |
190 | rb_lib_version(void) | |
191 | { | |
030272f3 VY |
192 | static char version_info[512]; |
193 | char ssl_info[512]; | |
194 | rb_get_ssl_info(ssl_info, sizeof(ssl_info)); | |
195 | rb_snprintf(version_info, sizeof(version_info), "libratbox version: %s - %s", libratbox_serno, ssl_info); | |
196 | return version_info; | |
db137867 AC |
197 | } |
198 | ||
199 | void | |
3202e249 VY |
200 | rb_lib_init(log_cb * ilog, restart_cb * irestart, die_cb * idie, int closeall, int maxcon, |
201 | size_t dh_size, size_t fd_heap_size) | |
db137867 AC |
202 | { |
203 | rb_set_time(); | |
204 | rb_log = ilog; | |
205 | rb_restart = irestart; | |
206 | rb_die = idie; | |
207 | rb_event_init(); | |
208 | rb_init_bh(); | |
209 | rb_fdlist_init(closeall, maxcon, fd_heap_size); | |
210 | rb_init_netio(); | |
211 | rb_init_rb_dlink_nodes(dh_size); | |
212 | if(rb_io_supports_event()) | |
213 | { | |
214 | rb_io_init_event(); | |
215 | } | |
216 | } | |
217 | ||
218 | void | |
219 | rb_lib_loop(long delay) | |
220 | { | |
221 | time_t next; | |
222 | rb_set_time(); | |
223 | ||
224 | if(rb_io_supports_event()) | |
225 | { | |
226 | if(delay == 0) | |
227 | delay = -1; | |
228 | while(1) | |
229 | rb_select(-1); | |
230 | } | |
3202e249 | 231 | |
db137867 AC |
232 | |
233 | while(1) | |
234 | { | |
235 | if(delay == 0) | |
236 | { | |
3202e249 | 237 | if((next = rb_event_next()) > 0) |
db137867 AC |
238 | { |
239 | next -= rb_current_time(); | |
240 | if(next <= 0) | |
241 | next = 1000; | |
3202e249 | 242 | else |
db137867 AC |
243 | next *= 1000; |
244 | } | |
245 | else | |
246 | next = -1; | |
247 | rb_select(next); | |
3202e249 VY |
248 | } |
249 | else | |
db137867 AC |
250 | rb_select(delay); |
251 | rb_event_run(); | |
252 | } | |
253 | } | |
254 | ||
255 | #ifndef HAVE_STRTOK_R | |
256 | char * | |
3202e249 | 257 | rb_strtok_r(char *s, const char *delim, char **save) |
db137867 AC |
258 | { |
259 | char *token; | |
260 | ||
3202e249 | 261 | if(s == NULL) |
db137867 AC |
262 | s = *save; |
263 | ||
264 | /* Scan leading delimiters. */ | |
265 | s += strspn(s, delim); | |
266 | ||
3202e249 | 267 | if(*s == '\0') |
db137867 AC |
268 | { |
269 | *save = s; | |
270 | return NULL; | |
271 | } | |
272 | ||
273 | token = s; | |
274 | s = strpbrk(token, delim); | |
3202e249 VY |
275 | |
276 | if(s == NULL) | |
db137867 AC |
277 | *save = (token + strlen(token)); |
278 | else | |
279 | { | |
3202e249 | 280 | *s = '\0'; |
db137867 AC |
281 | *save = s + 1; |
282 | } | |
283 | return token; | |
284 | } | |
285 | #else | |
3202e249 VY |
286 | char * |
287 | rb_strtok_r(char *s, const char *delim, char **save) | |
db137867 AC |
288 | { |
289 | return strtok_r(s, delim, save); | |
290 | } | |
291 | #endif | |
292 | ||
293 | ||
294 | static const char base64_table[] = | |
295 | { 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', | |
3202e249 VY |
296 | 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', |
297 | 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', | |
298 | 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', | |
299 | '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '+', '/', '\0' | |
300 | }; | |
db137867 AC |
301 | |
302 | static const char base64_pad = '='; | |
303 | ||
304 | static const short base64_reverse_table[256] = { | |
305 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, | |
306 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, | |
307 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 62, -1, -1, -1, 63, | |
308 | 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, -1, -1, -1, -1, -1, -1, | |
3202e249 | 309 | -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, |
db137867 AC |
310 | 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, -1, -1, -1, -1, -1, |
311 | -1, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, | |
312 | 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, -1, -1, -1, -1, -1, | |
313 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, | |
314 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, | |
315 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, | |
316 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, | |
317 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, | |
318 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, | |
319 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, | |
320 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 | |
321 | }; | |
322 | ||
323 | unsigned char * | |
324 | rb_base64_encode(const unsigned char *str, int length) | |
325 | { | |
326 | const unsigned char *current = str; | |
327 | unsigned char *p; | |
328 | unsigned char *result; | |
329 | ||
3202e249 VY |
330 | if((length + 2) < 0 || ((length + 2) / 3) >= (1 << (sizeof(int) * 8 - 2))) |
331 | { | |
db137867 AC |
332 | return NULL; |
333 | } | |
334 | ||
335 | result = rb_malloc(((length + 2) / 3) * 5); | |
336 | p = result; | |
337 | ||
3202e249 VY |
338 | while(length > 2) |
339 | { | |
db137867 AC |
340 | *p++ = base64_table[current[0] >> 2]; |
341 | *p++ = base64_table[((current[0] & 0x03) << 4) + (current[1] >> 4)]; | |
342 | *p++ = base64_table[((current[1] & 0x0f) << 2) + (current[2] >> 6)]; | |
343 | *p++ = base64_table[current[2] & 0x3f]; | |
344 | ||
345 | current += 3; | |
3202e249 | 346 | length -= 3; |
db137867 AC |
347 | } |
348 | ||
3202e249 VY |
349 | if(length != 0) |
350 | { | |
db137867 | 351 | *p++ = base64_table[current[0] >> 2]; |
3202e249 VY |
352 | if(length > 1) |
353 | { | |
db137867 AC |
354 | *p++ = base64_table[((current[0] & 0x03) << 4) + (current[1] >> 4)]; |
355 | *p++ = base64_table[(current[1] & 0x0f) << 2]; | |
356 | *p++ = base64_pad; | |
3202e249 VY |
357 | } |
358 | else | |
359 | { | |
db137867 AC |
360 | *p++ = base64_table[(current[0] & 0x03) << 4]; |
361 | *p++ = base64_pad; | |
362 | *p++ = base64_pad; | |
363 | } | |
364 | } | |
365 | *p = '\0'; | |
366 | return result; | |
367 | } | |
368 | ||
369 | unsigned char * | |
370 | rb_base64_decode(const unsigned char *str, int length, int *ret) | |
371 | { | |
372 | const unsigned char *current = str; | |
373 | int ch, i = 0, j = 0, k; | |
374 | unsigned char *result; | |
3202e249 | 375 | |
db137867 AC |
376 | result = rb_malloc(length + 1); |
377 | ||
3202e249 VY |
378 | while((ch = *current++) != '\0' && length-- > 0) |
379 | { | |
380 | if(ch == base64_pad) | |
381 | break; | |
db137867 AC |
382 | |
383 | ch = base64_reverse_table[ch]; | |
3202e249 VY |
384 | if(ch < 0) |
385 | continue; | |
db137867 | 386 | |
3202e249 VY |
387 | switch (i % 4) |
388 | { | |
db137867 AC |
389 | case 0: |
390 | result[j] = ch << 2; | |
391 | break; | |
392 | case 1: | |
393 | result[j++] |= ch >> 4; | |
394 | result[j] = (ch & 0x0f) << 4; | |
395 | break; | |
396 | case 2: | |
3202e249 | 397 | result[j++] |= ch >> 2; |
db137867 AC |
398 | result[j] = (ch & 0x03) << 6; |
399 | break; | |
400 | case 3: | |
401 | result[j++] |= ch; | |
402 | break; | |
403 | } | |
404 | i++; | |
405 | } | |
406 | ||
407 | k = j; | |
408 | ||
3202e249 VY |
409 | if(ch == base64_pad) |
410 | { | |
411 | switch (i % 4) | |
412 | { | |
db137867 AC |
413 | case 1: |
414 | free(result); | |
415 | return NULL; | |
416 | case 2: | |
417 | k++; | |
8c04f896 | 418 | /* FALLTHROUGH */ |
db137867 AC |
419 | case 3: |
420 | result[k++] = 0; | |
421 | } | |
422 | } | |
423 | result[j] = '\0'; | |
424 | *ret = j; | |
425 | return result; | |
426 | } |