ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/deliantra/server/common/utils.C
(Generate patch)

Comparing deliantra/server/common/utils.C (file contents):
Revision 1.20 by root, Mon Dec 11 21:32:16 2006 UTC vs.
Revision 1.108 by root, Sat Nov 17 23:40:00 2018 UTC

1/* 1/*
2 CrossFire, A Multiplayer game for X-windows 2 * This file is part of Deliantra, the Roguelike Realtime MMORPG.
3 3 *
4 Copyright (C) 2002 Mark Wedel & Crossfire Development Team 4 * Copyright (©) 2017,2018 Marc Alexander Lehmann / the Deliantra team
5 Copyright (C) 1992 Frank Tore Johansen 5 * Copyright (©) 2005,2006,2007,2008,2009,2010,2011,2012,2013,2014,2015,2016 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
6 6 *
7 This program is free software; you can redistribute it and/or modify 7 * Deliantra is free software: you can redistribute it and/or modify it under
8 it under the terms of the GNU General Public License as published by 8 * the terms of the Affero GNU General Public License as published by the
9 the Free Software Foundation; either version 2 of the License, or 9 * Free Software Foundation, either version 3 of the License, or (at your
10 (at your option) any later version. 10 * option) any later version.
11 11 *
12 This program is distributed in the hope that it will be useful, 12 * This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details. 15 * GNU General Public License for more details.
16 16 *
17 You should have received a copy of the GNU General Public License 17 * You should have received a copy of the Affero GNU General Public License
18 along with this program; if not, write to the Free Software 18 * and the GNU General Public License along with this program. If not, see
19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 19 * <http://www.gnu.org/licenses/>.
20 20 *
21 The authors can be reached via e-mail at <crossfire@schmorp.de> 21 * The authors can be reached via e-mail to <support@deliantra.net>
22*/ 22 */
23 23
24/* 24/*
25 * General convenience functions for crossfire. 25 * General convenience functions for deliantra.
26 */ 26 */
27 27
28#include <cstdlib>
29#include <sys/types.h>
30#include <unistd.h>
31#include <sys/time.h>
32#include <time.h>
33#include <signal.h>
34
28#include <global.h> 35#include <global.h>
29#include <funcpoint.h>
30#include <material.h> 36#include <material.h>
37#include <object.h>
38
39#include <sys/time.h>
40#include <sys/resource.h>
31 41
32#include <glib.h> 42#include <glib.h>
33 43
34/* 44refcnt_base::refcnt_t refcnt_dummy;
35 * The random functions here take luck into account when rolling random 45ssize_t slice_alloc;
36 * dice or numbers. This function has less of an impact the larger the 46
37 * difference becomes in the random numbers. IE, the effect is lessened 47/******************************************************************************/
38 * on a 1-1000 roll, vs a 1-6 roll. This can be used by crafty programmers, 48
39 * to specifically disable luck in certain rolls, simply by making the 49/* Checks a player-provided string which will become the msg property of
40 * numbers larger (ie, 1d1000 > 500 vs 1d6 > 3) 50 * an object for dangerous input.
41 */ 51 */
52bool
53msg_is_safe (const char *msg)
54{
55 bool safe = true;
42 56
43/* 57 /* Trying to cheat by getting data into the object */
44 * Roll a random number between min and max. Uses op to determine luck, 58 if (!strncmp (msg, "endmsg", sizeof ("endmsg") - 1)
45 * and if goodbad is non-zero, luck increases the roll, if zero, it decreases. 59 || strstr (msg, "\nendmsg"))
46 * Generally, op should be the player/caster/hitter requesting the roll, 60 safe = false;
47 * not the recipient (ie, the poor slob getting hit). [garbled 20010916] 61
48 */ 62 /* Trying to make the object talk, and potentially access arbitrary code */
63 if (object::msg_has_dialogue (msg))
64 safe = false;
65
66 return safe;
67}
68
69/////////////////////////////////////////////////////////////////////////////
70
71void
72fork_abort (const char *msg)
73{
74 if (!fork ())
75 {
76 signal (SIGINT , SIG_IGN);
77 signal (SIGTERM, SIG_IGN);
78 signal (SIGABRT, SIG_IGN);
79
80 signal (SIGSEGV, SIG_DFL);
81 signal (SIGFPE , SIG_DFL);
82#ifdef SIGBUS
83 signal (SIGBUS , SIG_DFL);
84#endif
85 signal (SIGILL , SIG_DFL);
86 signal (SIGTRAP, SIG_DFL);
87
88 // try to put corefiles into a subdirectory, if existing, to allow
89 // an administrator to reduce the I/O load.
90 chdir ("cores");
91
92 // try to detach us from as many external dependencies as possible
93 // as coredumping can take time by closing all fd's.
94 {
95 struct rlimit lim;
96
97 if (getrlimit (RLIMIT_NOFILE, &lim))
98 lim.rlim_cur = 1024;
99
100 for (int i = 0; i < lim.rlim_cur; ++i)
101 close (i);
102 }
103
104 {
105 sigset_t empty;
106 sigemptyset (&empty);
107 sigprocmask (SIG_SETMASK, &empty, 0);
108 }
109
110 // try to coredump with SIGTRAP
111 kill (getpid (), SIGTRAP);
112 abort ();
113 }
114
115 LOG (llevError, "fork abort: %s\n", msg);
116}
117
118void *
119salloc_ (int n)
120{
121 void *ptr = g_slice_alloc (n);
122
123 if (!ptr)
124 throw std::bad_alloc ();
125
126 slice_alloc += n;
127 return ptr;
128}
129
130void *
131salloc_ (int n, void *src)
132{
133 void *ptr = salloc_ (n);
134
135 if (src)
136 memcpy (ptr, src, n);
137 else
138 memset (ptr, 0, n);
139
140 return ptr;
141}
142
143/******************************************************************************/
144
145#if DEBUG_SALLOC
146
147#define MAGIC 0xa1b2c35543deadLL
148
149void *
150g_slice_alloc (unsigned long size)
151{
152 unsigned long *p = (unsigned long *) (g_slice_alloc)(size + sizeof (unsigned long));
153 *p++ = size ^ MAGIC;
154 //fprintf (stderr, "g_slice_alloc %ld %p\n", size, p);//D
155 return (void *)p;
156}
157
158void *
159g_slice_alloc0 (unsigned long size)
160{
161 return memset (g_slice_alloc (size), 0, size);
162}
163
164void
165g_slice_free1 (unsigned long size, void *ptr)
166{
167 //fprintf (stderr, "g_slice_free %ld %p\n", size, ptr);//D
168 if (expect_true (ptr))
169 {
170 unsigned long *p = (unsigned long *)ptr;
171 unsigned long s = *--p ^ MAGIC;
172
173 if (size != (unsigned long)(*p ^ MAGIC))
174 {
175 LOG (logBacktrace | llevError, "slice free size (%lx) doesn't match alloc size (%lx)\n", size, s);
176 abort ();
177 }
178
179 *p = MAGIC;
180
181 (g_slice_free1)(s + sizeof (unsigned long), p);
182 }
183}
184
185#endif
186
187/******************************************************************************/
188
189refcnt_buf::refcnt_buf (size_t size)
190{
191 static uint32_t empty_buf [2] = { 0, 1 }; // 2 == never deallocated
192 data = (char *)empty_buf + overhead;
193 assert (overhead == sizeof (empty_buf));
194 inc ();
195}
196
197refcnt_buf::refcnt_buf (void *data, size_t size)
198{
199 _alloc (size);
200 memcpy (this->data, data, size);
201}
202
203refcnt_buf::~refcnt_buf ()
204{
205 dec ();
206}
207
208void
209refcnt_buf::_dealloc ()
210{
211 sfree<char> (data - overhead, size () + overhead);
212}
213
214refcnt_buf &
215refcnt_buf::operator =(const refcnt_buf &src)
216{
217 dec ();
218 data = src.data;
219 inc ();
220 return *this;
221}
222
223/******************************************************************************/
49 224
50int 225int
51random_roll (int min, int max, const object *op, int goodbad) 226assign (char *dst, const char *src, int maxsize)
52{ 227{
53 int omin, diff, luck, base, ran; 228 if (!src)
229 src = "";
54 230
55 omin = min; 231 int len = strlen (src);
56 diff = max - min + 1;
57 ((diff > 2) ? (base = 20) : (base = 50)); /* d2 and d3 are corner cases */
58 232
59 if (max < 1 || diff < 1) 233 if (len >= maxsize)
60 { 234 {
61 LOG (llevError, "Calling random_roll with min=%d max=%d\n", min, max); 235 if (maxsize <= 4)
62 return (min); /* avoids a float exception */
63 }
64
65 ran = RANDOM ();
66
67 if (op->type != PLAYER)
68 return ((ran % diff) + min);
69
70 luck = op->stats.luck;
71 if (RANDOM () % base < MIN (10, abs (luck)))
72 {
73 /* we have a winner */
74 ((luck > 0) ? (luck = 1) : (luck = -1));
75 diff -= luck;
76 if (diff < 1)
77 return (omin); /*check again */
78 ((goodbad) ? (min += luck) : (diff));
79
80 return (MAX (omin, MIN (max, (ran % diff) + min)));
81 }
82 return ((ran % diff) + min);
83}
84
85/*
86 * This is a 64 bit version of random_roll above. This is needed
87 * for exp loss calculations for players changing religions.
88 */
89
90sint64
91random_roll64 (sint64 min, sint64 max, const object *op, int goodbad)
92{
93 sint64 omin, diff, luck, ran;
94 int base;
95
96 omin = min;
97 diff = max - min + 1;
98 ((diff > 2) ? (base = 20) : (base = 50)); /* d2 and d3 are corner cases */
99
100 if (max < 1 || diff < 1)
101 {
102 LOG (llevError, "Calling random_roll with min=%" PRId64 " max=%" PRId64 "\n", min, max);
103 return (min); /* avoids a float exception */
104 }
105
106 /* Don't know of a portable call to get 64 bit random values.
107 * So make a call to get two 32 bit random numbers, and just to
108 * a little byteshifting. Do make sure the first one is only
109 * 32 bit, so we don't get skewed results
110 */
111 ran = (RANDOM () & 0xffffffff) | ((sint64) RANDOM () << 32);
112
113 if (op->type != PLAYER)
114 return ((ran % diff) + min);
115
116 luck = op->stats.luck;
117 if (RANDOM () % base < MIN (10, abs (luck)))
118 {
119 /* we have a winner */
120 ((luck > 0) ? (luck = 1) : (luck = -1));
121 diff -= luck;
122 if (diff < 1)
123 return (omin); /*check again */
124 ((goodbad) ? (min += luck) : (diff));
125
126 return (MAX (omin, MIN (max, (ran % diff) + min)));
127 }
128 return ((ran % diff) + min);
129}
130
131/*
132 * Roll a number of dice (2d3, 4d6). Uses op to determine luck,
133 * If goodbad is non-zero, luck increases the roll, if zero, it decreases.
134 * Generally, op should be the player/caster/hitter requesting the roll,
135 * not the recipient (ie, the poor slob getting hit).
136 * The args are num D size (ie 4d6) [garbled 20010916]
137 */
138
139int
140die_roll (int num, int size, const object *op, int goodbad)
141{
142 int min, diff, luck, total, i, gotlucky, base, ran;
143
144 diff = size;
145 min = 1;
146 luck = total = gotlucky = 0;
147 ((diff > 2) ? (base = 20) : (base = 50)); /* d2 and d3 are corner cases */
148 if (size < 2 || diff < 1)
149 {
150 LOG (llevError, "Calling die_roll with num=%d size=%d\n", num, size);
151 return (num); /* avoids a float exception */
152 }
153
154 if (op->type == PLAYER)
155 luck = op->stats.luck;
156
157 for (i = 0; i < num; i++)
158 {
159 if (RANDOM () % base < MIN (10, abs (luck)) && !gotlucky)
160 { 236 {
161 /* we have a winner */ 237 memset (dst, '.', maxsize - 2);
162 gotlucky++; 238 dst [maxsize - 1] = 0;
163 ((luck > 0) ? (luck = 1) : (luck = -1));
164 diff -= luck;
165 if (diff < 1)
166 return (num); /*check again */
167 ((goodbad) ? (min += luck) : (diff));
168 ran = RANDOM ();
169 total += MAX (1, MIN (size, (ran % diff) + min));
170 } 239 }
171 else 240 else
172 { 241 {
173 total += RANDOM () % size + 1; 242 memcpy (dst, src, maxsize - 4);
243 memcpy (dst + maxsize - 4, "...", 4);
174 } 244 }
175 }
176 return (total);
177}
178 245
179/* 246 len = maxsize;
180 * Another convenience function. Returns a number between min and max.
181 * It is suggested one use these functions rather than RANDOM()%, as it
182 * would appear that a number of off-by-one-errors exist due to improper
183 * use of %. This should also prevent SIGFPE.
184 */
185
186int
187rndm (int min, int max)
188{
189 int diff;
190
191 diff = max - min + 1;
192 if (max < 1 || diff < 1)
193 return (min);
194
195 return (RANDOM () % diff + min);
196}
197
198/* decay and destroy persihable items in a map */
199
200void
201decay_objects (maptile *m)
202{
203 int x, y, destroy;
204 object *op, *otmp;
205
206 if (m->unique)
207 return;
208
209 for (x = 0; x < MAP_WIDTH (m); x++)
210 for (y = 0; y < MAP_HEIGHT (m); y++)
211 for (op = get_map_ob (m, x, y); op; op = otmp)
212 {
213 destroy = 0;
214 otmp = op->above;
215 if (QUERY_FLAG (op, FLAG_IS_FLOOR) && QUERY_FLAG (op, FLAG_UNIQUE))
216 break;
217 if (QUERY_FLAG (op, FLAG_IS_FLOOR) ||
218 QUERY_FLAG (op, FLAG_OBJ_ORIGINAL) ||
219 QUERY_FLAG (op, FLAG_OBJ_SAVE_ON_OVL) ||
220 QUERY_FLAG (op, FLAG_UNIQUE) || QUERY_FLAG (op, FLAG_OVERLAY_FLOOR) || QUERY_FLAG (op, FLAG_UNPAID) || IS_LIVE (op))
221 continue;
222 /* otherwise, we decay and destroy */
223 if (IS_WEAPON (op))
224 {
225 op->stats.dam--;
226 if (op->stats.dam < 0)
227 destroy = 1;
228 }
229 else if (IS_ARMOR (op))
230 {
231 op->stats.ac--;
232 if (op->stats.ac < 0)
233 destroy = 1;
234 }
235 else if (op->type == FOOD)
236 {
237 op->stats.food -= rndm (5, 20);
238 if (op->stats.food < 0)
239 destroy = 1;
240 }
241 else
242 {
243 if (op->material & M_PAPER || op->material & M_LEATHER ||
244 op->material & M_WOOD || op->material & M_ORGANIC || op->material & M_CLOTH || op->material & M_LIQUID)
245 destroy = 1;
246 if (op->material & M_IRON && rndm (1, 5) == 1)
247 destroy = 1;
248 if (op->material & M_GLASS && rndm (1, 2) == 1)
249 destroy = 1;
250 if ((op->material & M_STONE || op->material & M_ADAMANT) && rndm (1, 10) == 1)
251 destroy = 1;
252 if ((op->material & M_SOFT_METAL || op->material & M_BONE) && rndm (1, 3) == 1)
253 destroy = 1;
254 if (op->material & M_ICE && MAP_TEMP (m) > 32)
255 destroy = 1;
256 }
257 /* adjust overall chance below */
258 if (destroy && rndm (0, 1))
259 {
260 remove_ob (op);
261 free_object (op);
262 }
263 }
264}
265
266/* convert materialname to materialtype_t */
267
268materialtype_t *
269name_to_material (const char *name)
270{
271 materialtype_t *mt, *nmt;
272
273 mt = NULL;
274 for (nmt = materialt; nmt != NULL && nmt->next != NULL; nmt = nmt->next)
275 {
276 if (strcmp (name, nmt->name) == 0)
277 {
278 mt = nmt;
279 break;
280 }
281 }
282 return mt;
283}
284
285/* when doing transmutation of objects, we have to recheck the resistances,
286 * as some that did not apply previously, may apply now.
287 */
288
289void
290transmute_materialname (object *op, const object *change)
291{
292 materialtype_t *mt;
293 int j;
294
295 if (op->materialname == NULL)
296 return;
297
298 if (change->materialname != NULL && strcmp (op->materialname, change->materialname))
299 return;
300
301 if (!IS_ARMOR (op))
302 return;
303
304 mt = name_to_material (op->materialname);
305 if (!mt)
306 {
307 LOG (llevError, "archetype '%s>%s' uses nonexistent material '%s'\n", &op->arch->name, &op->name, &op->materialname);
308 return;
309 }
310
311 for (j = 0; j < NROFATTACKS; j++)
312 if (op->resist[j] == 0 && change->resist[j] != 0)
313 {
314 op->resist[j] += mt->mod[j];
315 if (op->resist[j] > 100)
316 op->resist[j] = 100;
317 if (op->resist[j] < -100)
318 op->resist[j] = -100;
319 }
320}
321
322/* set the materialname and type for an item */
323void
324set_materialname (object *op, int difficulty, materialtype_t *nmt)
325{
326 materialtype_t *mt, *lmt;
327
328#ifdef NEW_MATERIAL_CODE
329 int j;
330#endif
331
332 if (op->materialname != NULL)
333 return;
334
335
336
337 if (nmt == NULL)
338 {
339 lmt = NULL;
340#ifndef NEW_MATERIAL_CODE
341 for (mt = materialt; mt != NULL && mt->next != NULL; mt = mt->next)
342 {
343 if (op->material & mt->material)
344 {
345 lmt = mt;
346 break;
347 }
348 }
349
350#else
351 for (mt = materialt; mt != NULL && mt->next != NULL; mt = mt->next)
352 {
353 if (op->material & mt->material && rndm (1, 100) <= mt->chance &&
354 difficulty >= mt->difficulty && (op->magic >= mt->magic || mt->magic == 0))
355 {
356 lmt = mt;
357 if (!(IS_WEAPON (op) || IS_ARMOR (op)))
358 break;
359 }
360 }
361#endif
362 } 247 }
363 else 248 else
364 { 249 memcpy (dst, src, ++len);
365 lmt = nmt;
366 }
367 250
368 if (lmt != NULL) 251 return len;
369 { 252}
370#ifndef NEW_MATERIAL_CODE 253
371 op->materialname = lmt->name; 254char *
255vformat (const char *format, va_list ap)
256{
257 static dynbuf_text bufs[8];
258 static int bufidx;
259
260 dynbuf_text &buf = bufs [++bufidx & 7];
261
262 buf.clear ();
263 buf.vprintf (format, ap);
264 return buf;
265}
266
267char *
268format (const char *format, ...)
269{
270 va_list ap;
271 va_start (ap, format);
272 char *buf = vformat (format, ap);
273 va_end (ap);
274
275 return buf;
276}
277
278tstamp
279now ()
280{
281 struct timeval tv;
282
283 gettimeofday (&tv, 0);
284 return tstamp (tv.tv_sec) + tstamp (tv.tv_usec) * tstamp (1e-6);
285}
286
287int
288similar_direction (int a, int b)
289{
290 if (!a || !b)
372 return; 291 return 0;
373#else
374 292
375 if (op->stats.dam && IS_WEAPON (op)) 293 int diff = (b - a) & 7;
376 { 294 return diff <= 1 || diff >= 7;
377 op->stats.dam += lmt->damage; 295}
378 if (op->stats.dam < 1) 296
379 op->stats.dam = 1; 297/* crc32 0xdebb20e3 table and supplementary functions. */
380 } 298extern const uint32_t crc_32_tab[256] =
381 if (op->stats.sp && op->type == BOW) 299{
382 op->stats.sp += lmt->sp; 300 0x00000000UL, 0x77073096UL, 0xee0e612cUL, 0x990951baUL, 0x076dc419UL,
383 if (op->stats.wc && IS_WEAPON (op)) 301 0x706af48fUL, 0xe963a535UL, 0x9e6495a3UL, 0x0edb8832UL, 0x79dcb8a4UL,
384 op->stats.wc += lmt->wc; 302 0xe0d5e91eUL, 0x97d2d988UL, 0x09b64c2bUL, 0x7eb17cbdUL, 0xe7b82d07UL,
385 if (IS_ARMOR (op)) 303 0x90bf1d91UL, 0x1db71064UL, 0x6ab020f2UL, 0xf3b97148UL, 0x84be41deUL,
386 { 304 0x1adad47dUL, 0x6ddde4ebUL, 0xf4d4b551UL, 0x83d385c7UL, 0x136c9856UL,
387 if (op->stats.ac) 305 0x646ba8c0UL, 0xfd62f97aUL, 0x8a65c9ecUL, 0x14015c4fUL, 0x63066cd9UL,
388 op->stats.ac += lmt->ac; 306 0xfa0f3d63UL, 0x8d080df5UL, 0x3b6e20c8UL, 0x4c69105eUL, 0xd56041e4UL,
389 for (j = 0; j < NROFATTACKS; j++) 307 0xa2677172UL, 0x3c03e4d1UL, 0x4b04d447UL, 0xd20d85fdUL, 0xa50ab56bUL,
390 if (op->resist[j] != 0) 308 0x35b5a8faUL, 0x42b2986cUL, 0xdbbbc9d6UL, 0xacbcf940UL, 0x32d86ce3UL,
391 { 309 0x45df5c75UL, 0xdcd60dcfUL, 0xabd13d59UL, 0x26d930acUL, 0x51de003aUL,
392 op->resist[j] += lmt->mod[j]; 310 0xc8d75180UL, 0xbfd06116UL, 0x21b4f4b5UL, 0x56b3c423UL, 0xcfba9599UL,
393 if (op->resist[j] > 100) 311 0xb8bda50fUL, 0x2802b89eUL, 0x5f058808UL, 0xc60cd9b2UL, 0xb10be924UL,
394 op->resist[j] = 100; 312 0x2f6f7c87UL, 0x58684c11UL, 0xc1611dabUL, 0xb6662d3dUL, 0x76dc4190UL,
395 if (op->resist[j] < -100) 313 0x01db7106UL, 0x98d220bcUL, 0xefd5102aUL, 0x71b18589UL, 0x06b6b51fUL,
396 op->resist[j] = -100; 314 0x9fbfe4a5UL, 0xe8b8d433UL, 0x7807c9a2UL, 0x0f00f934UL, 0x9609a88eUL,
397 } 315 0xe10e9818UL, 0x7f6a0dbbUL, 0x086d3d2dUL, 0x91646c97UL, 0xe6635c01UL,
398 } 316 0x6b6b51f4UL, 0x1c6c6162UL, 0x856530d8UL, 0xf262004eUL, 0x6c0695edUL,
399 op->materialname = add_string (lmt->name); 317 0x1b01a57bUL, 0x8208f4c1UL, 0xf50fc457UL, 0x65b0d9c6UL, 0x12b7e950UL,
400 /* dont make it unstackable if it doesn't need to be */ 318 0x8bbeb8eaUL, 0xfcb9887cUL, 0x62dd1ddfUL, 0x15da2d49UL, 0x8cd37cf3UL,
401 if (IS_WEAPON (op) || IS_ARMOR (op)) 319 0xfbd44c65UL, 0x4db26158UL, 0x3ab551ceUL, 0xa3bc0074UL, 0xd4bb30e2UL,
402 { 320 0x4adfa541UL, 0x3dd895d7UL, 0xa4d1c46dUL, 0xd3d6f4fbUL, 0x4369e96aUL,
403 op->weight = (op->weight * lmt->weight) / 100; 321 0x346ed9fcUL, 0xad678846UL, 0xda60b8d0UL, 0x44042d73UL, 0x33031de5UL,
404 op->value = (op->value * lmt->value) / 100; 322 0xaa0a4c5fUL, 0xdd0d7cc9UL, 0x5005713cUL, 0x270241aaUL, 0xbe0b1010UL,
405 } 323 0xc90c2086UL, 0x5768b525UL, 0x206f85b3UL, 0xb966d409UL, 0xce61e49fUL,
324 0x5edef90eUL, 0x29d9c998UL, 0xb0d09822UL, 0xc7d7a8b4UL, 0x59b33d17UL,
325 0x2eb40d81UL, 0xb7bd5c3bUL, 0xc0ba6cadUL, 0xedb88320UL, 0x9abfb3b6UL,
326 0x03b6e20cUL, 0x74b1d29aUL, 0xead54739UL, 0x9dd277afUL, 0x04db2615UL,
327 0x73dc1683UL, 0xe3630b12UL, 0x94643b84UL, 0x0d6d6a3eUL, 0x7a6a5aa8UL,
328 0xe40ecf0bUL, 0x9309ff9dUL, 0x0a00ae27UL, 0x7d079eb1UL, 0xf00f9344UL,
329 0x8708a3d2UL, 0x1e01f268UL, 0x6906c2feUL, 0xf762575dUL, 0x806567cbUL,
330 0x196c3671UL, 0x6e6b06e7UL, 0xfed41b76UL, 0x89d32be0UL, 0x10da7a5aUL,
331 0x67dd4accUL, 0xf9b9df6fUL, 0x8ebeeff9UL, 0x17b7be43UL, 0x60b08ed5UL,
332 0xd6d6a3e8UL, 0xa1d1937eUL, 0x38d8c2c4UL, 0x4fdff252UL, 0xd1bb67f1UL,
333 0xa6bc5767UL, 0x3fb506ddUL, 0x48b2364bUL, 0xd80d2bdaUL, 0xaf0a1b4cUL,
334 0x36034af6UL, 0x41047a60UL, 0xdf60efc3UL, 0xa867df55UL, 0x316e8eefUL,
335 0x4669be79UL, 0xcb61b38cUL, 0xbc66831aUL, 0x256fd2a0UL, 0x5268e236UL,
336 0xcc0c7795UL, 0xbb0b4703UL, 0x220216b9UL, 0x5505262fUL, 0xc5ba3bbeUL,
337 0xb2bd0b28UL, 0x2bb45a92UL, 0x5cb36a04UL, 0xc2d7ffa7UL, 0xb5d0cf31UL,
338 0x2cd99e8bUL, 0x5bdeae1dUL, 0x9b64c2b0UL, 0xec63f226UL, 0x756aa39cUL,
339 0x026d930aUL, 0x9c0906a9UL, 0xeb0e363fUL, 0x72076785UL, 0x05005713UL,
340 0x95bf4a82UL, 0xe2b87a14UL, 0x7bb12baeUL, 0x0cb61b38UL, 0x92d28e9bUL,
341 0xe5d5be0dUL, 0x7cdcefb7UL, 0x0bdbdf21UL, 0x86d3d2d4UL, 0xf1d4e242UL,
342 0x68ddb3f8UL, 0x1fda836eUL, 0x81be16cdUL, 0xf6b9265bUL, 0x6fb077e1UL,
343 0x18b74777UL, 0x88085ae6UL, 0xff0f6a70UL, 0x66063bcaUL, 0x11010b5cUL,
344 0x8f659effUL, 0xf862ae69UL, 0x616bffd3UL, 0x166ccf45UL, 0xa00ae278UL,
345 0xd70dd2eeUL, 0x4e048354UL, 0x3903b3c2UL, 0xa7672661UL, 0xd06016f7UL,
346 0x4969474dUL, 0x3e6e77dbUL, 0xaed16a4aUL, 0xd9d65adcUL, 0x40df0b66UL,
347 0x37d83bf0UL, 0xa9bcae53UL, 0xdebb9ec5UL, 0x47b2cf7fUL, 0x30b5ffe9UL,
348 0xbdbdf21cUL, 0xcabac28aUL, 0x53b39330UL, 0x24b4a3a6UL, 0xbad03605UL,
349 0xcdd70693UL, 0x54de5729UL, 0x23d967bfUL, 0xb3667a2eUL, 0xc4614ab8UL,
350 0x5d681b02UL, 0x2a6f2b94UL, 0xb40bbe37UL, 0xc30c8ea1UL, 0x5a05df1bUL,
351 0x2d02ef8dL
352};
353
354void
355thread::start (void *(*start_routine)(void *), void *arg)
356{
357 pthread_attr_t attr;
358
359 pthread_attr_init (&attr);
360 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
361 pthread_attr_setstacksize (&attr, PTHREAD_STACK_MIN < sizeof (long) * 4096
362 ? sizeof (long) * 4096 : PTHREAD_STACK_MIN);
363#ifdef PTHREAD_SCOPE_PROCESS
364 pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
406#endif 365#endif
407 }
408}
409 366
410/* 367 sigset_t fullsigset, oldsigset;
411 * Strip out the media tags from a String. 368 sigfillset (&fullsigset);
412 * Warning the input string will contain the result string
413 */
414void
415strip_media_tag (char *message)
416{
417 int in_tag = 0;
418 char *dest;
419 char *src;
420 369
421 src = dest = message; 370 pthread_sigmask (SIG_SETMASK, &fullsigset, &oldsigset);
422 while (*src != '\0')
423 {
424 if (*src == '[')
425 {
426 in_tag = 1;
427 }
428 else if (in_tag && (*src == ']'))
429 in_tag = 0;
430 else if (!in_tag)
431 {
432 *dest = *src;
433 dest++;
434 }
435 src++;
436 }
437 *dest = '\0';
438}
439 371
440const char * 372 if (pthread_create (&id, &attr, start_routine, arg))
441strrstr (const char *haystack, const char *needle) 373 cleanup ("unable to create a new thread");
442{
443 const char *lastneedle;
444 374
445 lastneedle = NULL; 375 pthread_sigmask (SIG_SETMASK, &oldsigset, 0);
446 while ((haystack = strstr (haystack, needle)) != NULL)
447 {
448 lastneedle = haystack;
449 haystack++;
450 }
451 return lastneedle;
452
453} 376}
454 377
455#define EOL_SIZE (sizeof("\n")-1)
456void
457strip_endline (char *buf)
458{
459 if (strlen (buf) < sizeof ("\n"))
460 {
461 return;
462 }
463 if (!strcmp (buf + strlen (buf) - EOL_SIZE, "\n"))
464 buf[strlen (buf) - EOL_SIZE] = '\0';
465}
466
467/**
468 * Replace in string src all occurrences of key by replacement. The resulting
469 * string is put into result; at most resultsize characters (including the
470 * terminating null character) will be written to result.
471 */
472void
473replace (const char *src, const char *key, const char *replacement, char *result, size_t resultsize)
474{
475 size_t resultlen;
476 size_t keylen;
477
478 /* special case to prevent infinite loop if key==replacement=="" */
479 if (strcmp (key, replacement) == 0)
480 {
481 snprintf (result, resultsize, "%s", src);
482 return;
483 }
484
485 keylen = strlen (key);
486
487 resultlen = 0;
488 while (*src != '\0' && resultlen + 1 < resultsize)
489 {
490 if (strncmp (src, key, keylen) == 0)
491 {
492 snprintf (result + resultlen, resultsize - resultlen, "%s", replacement);
493 resultlen += strlen (result + resultlen);
494 src += keylen;
495 }
496 else
497 {
498 result[resultlen++] = *src++;
499 }
500 }
501 result[resultlen] = '\0';
502}
503
504/**
505 * Taking a string as an argument, mutate it into a string that looks like a list.
506 * a 'list' for the purposes here, is a string of items, seperated by commas, except
507 * for the last entry, which has an 'and' before it, and a full stop (period) after it.
508 * This function will also strip all trailing non alphanumeric characters.
509 * It does not insert an oxford comma.
510 */
511
512void
513make_list_like (char *input)
514{
515 char *p, tmp[MAX_BUF];
516 int i;
517
518 if (!input || strlen (input) > MAX_BUF - 5)
519 return;
520 /* bad stuff would happen if we continued here, the -5 is to make space for ' and ' */
521
522 strncpy (tmp, input, MAX_BUF - 5);
523 /*trim all trailing commas, spaces etc. */
524 for (i = strlen (tmp); !isalnum (tmp[i]) && i >= 0; i--)
525 tmp[i] = '\0';
526
527 strcat (tmp, ".");
528
529 p = strrchr (tmp, ',');
530 if (p)
531 {
532 *p = '\0';
533 strcpy (input, tmp);
534 p++;
535 strcat (input, " and");
536 strcat (input, p);
537 }
538 else
539 strcpy (input, tmp);
540
541 return;
542}
543
544/////////////////////////////////////////////////////////////////////////////
545
546#if 0
547refcounted *refcounted::rc_first;
548
549refcounted::refcounted ()
550{
551 refcnt = 0;
552 rc_next = rc_first;
553 rc_first = this;
554}
555
556refcounted::~refcounted ()
557{
558 assert (!rc_next);
559 assert (!refcnt);
560}
561#endif
562
563void *alloc (int s) throw (std::bad_alloc)
564{
565 void *p = g_slice_alloc (s);
566
567 if (!p)
568 throw std::bad_alloc ();
569
570 return p;
571}
572
573void assign (char *dst, const char *src, int maxlen)
574{
575 if (!src)
576 src = "";
577
578 int len = strlen (src);
579
580 if (len >= maxlen - 1)
581 {
582 if (maxlen <= 4)
583 {
584 memset (dst, '.', maxlen - 1);
585 dst [maxlen - 1] = 0;
586 }
587 else
588 {
589 memcpy (dst, src, maxlen - 4);
590 memcpy (dst + maxlen - 4, "...", 4);
591 }
592 }
593 else
594 memcpy (dst, src, len + 1);
595}
596
597

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines