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Comparing deliantra/server/common/utils.C (file contents):
Revision 1.22 by root, Tue Dec 12 21:39:56 2006 UTC vs.
Revision 1.97 by root, Fri Jul 2 02:00:47 2010 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 (©) 2005,2006,2007,2008,2009,2010 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
5 Copyright (C) 1992 Frank Tore Johansen 5 *
6 6 * Deliantra is free software: you can redistribute it and/or modify it under
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by 7 * 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 8 * Free Software Foundation, either version 3 of the License, or (at your
10 (at your option) any later version. 9 * option) any later version.
11 10 *
12 This program is distributed in the hope that it will be useful, 11 * This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details. 14 * GNU General Public License for more details.
16 15 *
17 You should have received a copy of the GNU General Public License 16 * 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 17 * and the GNU General Public License along with this program. If not, see
19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 18 * <http://www.gnu.org/licenses/>.
20 19 *
21 The authors can be reached via e-mail at <crossfire@schmorp.de> 20 * The authors can be reached via e-mail to <support@deliantra.net>
22*/ 21 */
23 22
24/* 23/*
25 * General convenience functions for crossfire. 24 * General convenience functions for deliantra.
26 */ 25 */
27 26
27#include <cstdlib>
28#include <sys/types.h>
29#include <unistd.h>
30#include <sys/time.h>
31#include <time.h>
32#include <signal.h>
33
28#include <global.h> 34#include <global.h>
29#include <funcpoint.h>
30#include <material.h> 35#include <material.h>
36#include <object.h>
37
38#include <sys/time.h>
39#include <sys/resource.h>
31 40
32#include <glib.h> 41#include <glib.h>
33 42
34/* 43refcnt_base::refcnt_t refcnt_dummy;
35 * The random functions here take luck into account when rolling random 44ssize_t slice_alloc;
36 * dice or numbers. This function has less of an impact the larger the 45
37 * difference becomes in the random numbers. IE, the effect is lessened 46#if !GCC_VERSION(3,4)
38 * on a 1-1000 roll, vs a 1-6 roll. This can be used by crafty programmers, 47int least_significant_bit (uint32_t x)
39 * to specifically disable luck in certain rolls, simply by making the 48{
40 * numbers larger (ie, 1d1000 > 500 vs 1d6 > 3) 49 x &= -x; // this isolates the lowest bit
50
51 int r = 0;
52
53 if (x & 0xaaaaaaaa) r += 1;
54 if (x & 0xcccccccc) r += 2;
55 if (x & 0xf0f0f0f0) r += 4;
56 if (x & 0xff00ff00) r += 8;
57 if (x & 0xffff0000) r += 16;
58
59 return r;
60}
61#endif
62
63/******************************************************************************/
64
65/* Checks a player-provided string which will become the msg property of
66 * an object for dangerous input.
41 */ 67 */
68bool
69msg_is_safe (const char *msg)
70{
71 bool safe = true;
42 72
43/* 73 /* Trying to cheat by getting data into the object */
44 * Roll a random number between min and max. Uses op to determine luck, 74 if (!strncmp (msg, "endmsg", sizeof ("endmsg") - 1)
45 * and if goodbad is non-zero, luck increases the roll, if zero, it decreases. 75 || strstr (msg, "\nendmsg"))
46 * Generally, op should be the player/caster/hitter requesting the roll, 76 safe = false;
47 * not the recipient (ie, the poor slob getting hit). [garbled 20010916] 77
48 */ 78 /* Trying to make the object talk, and potentially access arbitrary code */
79 if (object::msg_has_dialogue (msg))
80 safe = false;
81
82 return safe;
83}
84
85/////////////////////////////////////////////////////////////////////////////
86
87void
88fork_abort (const char *msg)
89{
90 if (!fork ())
91 {
92 signal (SIGINT , SIG_IGN);
93 signal (SIGTERM, SIG_IGN);
94 signal (SIGABRT, SIG_IGN);
95
96 signal (SIGSEGV, SIG_DFL);
97 signal (SIGBUS , SIG_DFL);
98 signal (SIGILL , SIG_DFL);
99 signal (SIGTRAP, SIG_DFL);
100
101 // try to put corefiles into a subdirectory, if existing, to allow
102 // an administrator to reduce the I/O load.
103 chdir ("cores");
104
105 // try to detach us from as many external dependencies as possible
106 // as coredumping can take time by closing all fd's.
107 {
108 struct rlimit lim;
109
110 if (getrlimit (RLIMIT_NOFILE, &lim))
111 lim.rlim_cur = 1024;
112
113 for (int i = 0; i < lim.rlim_cur; ++i)
114 close (i);
115 }
116
117 {
118 sigset_t empty;
119 sigemptyset (&empty);
120 sigprocmask (SIG_SETMASK, &empty, 0);
121 }
122
123 // try to coredump with SIGTRAP
124 kill (getpid (), SIGTRAP);
125 abort ();
126 }
127
128 LOG (llevError, "fork abort: %s\n", msg);
129}
130
131void *salloc_ (int n) throw (std::bad_alloc)
132{
133 void *ptr = g_slice_alloc (n);
134
135 if (!ptr)
136 throw std::bad_alloc ();
137
138 slice_alloc += n;
139 return ptr;
140}
141
142void *salloc_ (int n, void *src) throw (std::bad_alloc)
143{
144 void *ptr = salloc_ (n);
145
146 if (src)
147 memcpy (ptr, src, n);
148 else
149 memset (ptr, 0, n);
150
151 return ptr;
152}
153
154/******************************************************************************/
155
156#if DEBUG_SALLOC
157
158#define MAGIC 0xa1b2c35543deadLL
159
160void *g_slice_alloc (unsigned long size)
161{
162 unsigned long *p = (unsigned long *) (g_slice_alloc)(size + sizeof (unsigned long));
163 *p++ = size ^ MAGIC;
164 //fprintf (stderr, "g_slice_alloc %ld %p\n", size, p);//D
165 return (void *)p;
166}
167
168void *g_slice_alloc0 (unsigned long size)
169{
170 return memset (g_slice_alloc (size), 0, size);
171}
172
173void g_slice_free1 (unsigned long size, void *ptr)
174{
175 //fprintf (stderr, "g_slice_free %ld %p\n", size, ptr);//D
176 if (expect_true (ptr))
177 {
178 unsigned long *p = (unsigned long *)ptr;
179 unsigned long s = *--p ^ MAGIC;
180
181 if (size != (unsigned long)(*p ^ MAGIC))
182 {
183 LOG (logBacktrace | llevError, "slice free size (%lx) doesn't match alloc size (%lx)\n", size, s);
184 abort ();
185 }
186
187 *p = MAGIC;
188
189 (g_slice_free1)(s + sizeof (unsigned long), p);
190 }
191}
192
193#endif
194
195/******************************************************************************/
49 196
50int 197int
51random_roll (int min, int max, const object *op, int goodbad) 198assign (char *dst, const char *src, int maxsize)
52{ 199{
53 int omin, diff, luck, base, ran; 200 if (!src)
201 src = "";
54 202
55 omin = min; 203 int len = strlen (src);
56 diff = max - min + 1;
57 ((diff > 2) ? (base = 20) : (base = 50)); /* d2 and d3 are corner cases */
58 204
59 if (max < 1 || diff < 1) 205 if (len >= maxsize)
60 { 206 {
61 LOG (llevError, "Calling random_roll with min=%d max=%d\n", min, max); 207 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 { 208 {
161 /* we have a winner */ 209 memset (dst, '.', maxsize - 2);
162 gotlucky++; 210 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 } 211 }
171 else 212 else
172 { 213 {
173 total += RANDOM () % size + 1; 214 memcpy (dst, src, maxsize - 4);
215 memcpy (dst + maxsize - 4, "...", 4);
174 } 216 }
175 }
176 return (total);
177}
178 217
179/* 218 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 op->destroy ();
260 }
261}
262
263/* convert materialname to materialtype_t */
264
265materialtype_t *
266name_to_material (const char *name)
267{
268 materialtype_t *mt, *nmt;
269
270 mt = NULL;
271 for (nmt = materialt; nmt != NULL && nmt->next != NULL; nmt = nmt->next)
272 {
273 if (strcmp (name, nmt->name) == 0)
274 {
275 mt = nmt;
276 break;
277 }
278 }
279 return mt;
280}
281
282/* when doing transmutation of objects, we have to recheck the resistances,
283 * as some that did not apply previously, may apply now.
284 */
285
286void
287transmute_materialname (object *op, const object *change)
288{
289 materialtype_t *mt;
290 int j;
291
292 if (op->materialname == NULL)
293 return;
294
295 if (change->materialname != NULL && strcmp (op->materialname, change->materialname))
296 return;
297
298 if (!IS_ARMOR (op))
299 return;
300
301 mt = name_to_material (op->materialname);
302 if (!mt)
303 {
304 LOG (llevError, "archetype '%s>%s' uses nonexistent material '%s'\n", &op->arch->name, &op->name, &op->materialname);
305 return;
306 }
307
308 for (j = 0; j < NROFATTACKS; j++)
309 if (op->resist[j] == 0 && change->resist[j] != 0)
310 {
311 op->resist[j] += mt->mod[j];
312 if (op->resist[j] > 100)
313 op->resist[j] = 100;
314 if (op->resist[j] < -100)
315 op->resist[j] = -100;
316 }
317}
318
319/* set the materialname and type for an item */
320void
321set_materialname (object *op, int difficulty, materialtype_t *nmt)
322{
323 materialtype_t *mt, *lmt;
324
325#ifdef NEW_MATERIAL_CODE
326 int j;
327#endif
328
329 if (op->materialname != NULL)
330 return;
331
332
333
334 if (nmt == NULL)
335 {
336 lmt = NULL;
337#ifndef NEW_MATERIAL_CODE
338 for (mt = materialt; mt != NULL && mt->next != NULL; mt = mt->next)
339 {
340 if (op->material & mt->material)
341 {
342 lmt = mt;
343 break;
344 }
345 }
346
347#else
348 for (mt = materialt; mt != NULL && mt->next != NULL; mt = mt->next)
349 {
350 if (op->material & mt->material && rndm (1, 100) <= mt->chance &&
351 difficulty >= mt->difficulty && (op->magic >= mt->magic || mt->magic == 0))
352 {
353 lmt = mt;
354 if (!(IS_WEAPON (op) || IS_ARMOR (op)))
355 break;
356 }
357 }
358#endif
359 } 219 }
360 else 220 else
361 { 221 memcpy (dst, src, ++len);
362 lmt = nmt;
363 }
364 222
365 if (lmt != NULL) 223 return len;
366 { 224}
367#ifndef NEW_MATERIAL_CODE 225
368 op->materialname = lmt->name; 226char *
227vformat (const char *format, va_list ap)
228{
229 static dynbuf_text bufs[8];
230 static int bufidx;
231
232 dynbuf_text &buf = bufs [++bufidx & 7];
233
234 buf.clear ();
235 buf.vprintf (format, ap);
236 return buf;
237}
238
239char *
240format (const char *format, ...)
241{
242 va_list ap;
243 va_start (ap, format);
244 char *buf = vformat (format, ap);
245 va_end (ap);
246
247 return buf;
248}
249
250tstamp now ()
251{
252 struct timeval tv;
253
254 gettimeofday (&tv, 0);
255 return tstamp (tv.tv_sec) + tstamp (tv.tv_usec) * tstamp (1e-6);
256}
257
258int
259similar_direction (int a, int b)
260{
261 if (!a || !b)
369 return; 262 return 0;
370#else
371 263
372 if (op->stats.dam && IS_WEAPON (op)) 264 int diff = (b - a) & 7;
373 { 265 return diff <= 1 || diff >= 7;
374 op->stats.dam += lmt->damage; 266}
375 if (op->stats.dam < 1) 267
376 op->stats.dam = 1; 268/* crc32 0xdebb20e3 table and supplementary functions. */
377 } 269extern const uint32_t crc_32_tab[256] =
378 if (op->stats.sp && op->type == BOW) 270{
379 op->stats.sp += lmt->sp; 271 0x00000000UL, 0x77073096UL, 0xee0e612cUL, 0x990951baUL, 0x076dc419UL,
380 if (op->stats.wc && IS_WEAPON (op)) 272 0x706af48fUL, 0xe963a535UL, 0x9e6495a3UL, 0x0edb8832UL, 0x79dcb8a4UL,
381 op->stats.wc += lmt->wc; 273 0xe0d5e91eUL, 0x97d2d988UL, 0x09b64c2bUL, 0x7eb17cbdUL, 0xe7b82d07UL,
382 if (IS_ARMOR (op)) 274 0x90bf1d91UL, 0x1db71064UL, 0x6ab020f2UL, 0xf3b97148UL, 0x84be41deUL,
383 { 275 0x1adad47dUL, 0x6ddde4ebUL, 0xf4d4b551UL, 0x83d385c7UL, 0x136c9856UL,
384 if (op->stats.ac) 276 0x646ba8c0UL, 0xfd62f97aUL, 0x8a65c9ecUL, 0x14015c4fUL, 0x63066cd9UL,
385 op->stats.ac += lmt->ac; 277 0xfa0f3d63UL, 0x8d080df5UL, 0x3b6e20c8UL, 0x4c69105eUL, 0xd56041e4UL,
386 for (j = 0; j < NROFATTACKS; j++) 278 0xa2677172UL, 0x3c03e4d1UL, 0x4b04d447UL, 0xd20d85fdUL, 0xa50ab56bUL,
387 if (op->resist[j] != 0) 279 0x35b5a8faUL, 0x42b2986cUL, 0xdbbbc9d6UL, 0xacbcf940UL, 0x32d86ce3UL,
388 { 280 0x45df5c75UL, 0xdcd60dcfUL, 0xabd13d59UL, 0x26d930acUL, 0x51de003aUL,
389 op->resist[j] += lmt->mod[j]; 281 0xc8d75180UL, 0xbfd06116UL, 0x21b4f4b5UL, 0x56b3c423UL, 0xcfba9599UL,
390 if (op->resist[j] > 100) 282 0xb8bda50fUL, 0x2802b89eUL, 0x5f058808UL, 0xc60cd9b2UL, 0xb10be924UL,
391 op->resist[j] = 100; 283 0x2f6f7c87UL, 0x58684c11UL, 0xc1611dabUL, 0xb6662d3dUL, 0x76dc4190UL,
392 if (op->resist[j] < -100) 284 0x01db7106UL, 0x98d220bcUL, 0xefd5102aUL, 0x71b18589UL, 0x06b6b51fUL,
393 op->resist[j] = -100; 285 0x9fbfe4a5UL, 0xe8b8d433UL, 0x7807c9a2UL, 0x0f00f934UL, 0x9609a88eUL,
394 } 286 0xe10e9818UL, 0x7f6a0dbbUL, 0x086d3d2dUL, 0x91646c97UL, 0xe6635c01UL,
395 } 287 0x6b6b51f4UL, 0x1c6c6162UL, 0x856530d8UL, 0xf262004eUL, 0x6c0695edUL,
396 op->materialname = add_string (lmt->name); 288 0x1b01a57bUL, 0x8208f4c1UL, 0xf50fc457UL, 0x65b0d9c6UL, 0x12b7e950UL,
397 /* dont make it unstackable if it doesn't need to be */ 289 0x8bbeb8eaUL, 0xfcb9887cUL, 0x62dd1ddfUL, 0x15da2d49UL, 0x8cd37cf3UL,
398 if (IS_WEAPON (op) || IS_ARMOR (op)) 290 0xfbd44c65UL, 0x4db26158UL, 0x3ab551ceUL, 0xa3bc0074UL, 0xd4bb30e2UL,
399 { 291 0x4adfa541UL, 0x3dd895d7UL, 0xa4d1c46dUL, 0xd3d6f4fbUL, 0x4369e96aUL,
400 op->weight = (op->weight * lmt->weight) / 100; 292 0x346ed9fcUL, 0xad678846UL, 0xda60b8d0UL, 0x44042d73UL, 0x33031de5UL,
401 op->value = (op->value * lmt->value) / 100; 293 0xaa0a4c5fUL, 0xdd0d7cc9UL, 0x5005713cUL, 0x270241aaUL, 0xbe0b1010UL,
402 } 294 0xc90c2086UL, 0x5768b525UL, 0x206f85b3UL, 0xb966d409UL, 0xce61e49fUL,
295 0x5edef90eUL, 0x29d9c998UL, 0xb0d09822UL, 0xc7d7a8b4UL, 0x59b33d17UL,
296 0x2eb40d81UL, 0xb7bd5c3bUL, 0xc0ba6cadUL, 0xedb88320UL, 0x9abfb3b6UL,
297 0x03b6e20cUL, 0x74b1d29aUL, 0xead54739UL, 0x9dd277afUL, 0x04db2615UL,
298 0x73dc1683UL, 0xe3630b12UL, 0x94643b84UL, 0x0d6d6a3eUL, 0x7a6a5aa8UL,
299 0xe40ecf0bUL, 0x9309ff9dUL, 0x0a00ae27UL, 0x7d079eb1UL, 0xf00f9344UL,
300 0x8708a3d2UL, 0x1e01f268UL, 0x6906c2feUL, 0xf762575dUL, 0x806567cbUL,
301 0x196c3671UL, 0x6e6b06e7UL, 0xfed41b76UL, 0x89d32be0UL, 0x10da7a5aUL,
302 0x67dd4accUL, 0xf9b9df6fUL, 0x8ebeeff9UL, 0x17b7be43UL, 0x60b08ed5UL,
303 0xd6d6a3e8UL, 0xa1d1937eUL, 0x38d8c2c4UL, 0x4fdff252UL, 0xd1bb67f1UL,
304 0xa6bc5767UL, 0x3fb506ddUL, 0x48b2364bUL, 0xd80d2bdaUL, 0xaf0a1b4cUL,
305 0x36034af6UL, 0x41047a60UL, 0xdf60efc3UL, 0xa867df55UL, 0x316e8eefUL,
306 0x4669be79UL, 0xcb61b38cUL, 0xbc66831aUL, 0x256fd2a0UL, 0x5268e236UL,
307 0xcc0c7795UL, 0xbb0b4703UL, 0x220216b9UL, 0x5505262fUL, 0xc5ba3bbeUL,
308 0xb2bd0b28UL, 0x2bb45a92UL, 0x5cb36a04UL, 0xc2d7ffa7UL, 0xb5d0cf31UL,
309 0x2cd99e8bUL, 0x5bdeae1dUL, 0x9b64c2b0UL, 0xec63f226UL, 0x756aa39cUL,
310 0x026d930aUL, 0x9c0906a9UL, 0xeb0e363fUL, 0x72076785UL, 0x05005713UL,
311 0x95bf4a82UL, 0xe2b87a14UL, 0x7bb12baeUL, 0x0cb61b38UL, 0x92d28e9bUL,
312 0xe5d5be0dUL, 0x7cdcefb7UL, 0x0bdbdf21UL, 0x86d3d2d4UL, 0xf1d4e242UL,
313 0x68ddb3f8UL, 0x1fda836eUL, 0x81be16cdUL, 0xf6b9265bUL, 0x6fb077e1UL,
314 0x18b74777UL, 0x88085ae6UL, 0xff0f6a70UL, 0x66063bcaUL, 0x11010b5cUL,
315 0x8f659effUL, 0xf862ae69UL, 0x616bffd3UL, 0x166ccf45UL, 0xa00ae278UL,
316 0xd70dd2eeUL, 0x4e048354UL, 0x3903b3c2UL, 0xa7672661UL, 0xd06016f7UL,
317 0x4969474dUL, 0x3e6e77dbUL, 0xaed16a4aUL, 0xd9d65adcUL, 0x40df0b66UL,
318 0x37d83bf0UL, 0xa9bcae53UL, 0xdebb9ec5UL, 0x47b2cf7fUL, 0x30b5ffe9UL,
319 0xbdbdf21cUL, 0xcabac28aUL, 0x53b39330UL, 0x24b4a3a6UL, 0xbad03605UL,
320 0xcdd70693UL, 0x54de5729UL, 0x23d967bfUL, 0xb3667a2eUL, 0xc4614ab8UL,
321 0x5d681b02UL, 0x2a6f2b94UL, 0xb40bbe37UL, 0xc30c8ea1UL, 0x5a05df1bUL,
322 0x2d02ef8dL
323};
324
325void thread::start (void *(*start_routine)(void *), void *arg)
326{
327 pthread_attr_t attr;
328
329 pthread_attr_init (&attr);
330 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
331 pthread_attr_setstacksize (&attr, PTHREAD_STACK_MIN < sizeof (long) * 4096
332 ? sizeof (long) * 4096 : PTHREAD_STACK_MIN);
333#ifdef PTHREAD_SCOPE_PROCESS
334 pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
403#endif 335#endif
404 }
405}
406 336
407/* 337 sigset_t fullsigset, oldsigset;
408 * Strip out the media tags from a String. 338 sigfillset (&fullsigset);
409 * Warning the input string will contain the result string
410 */
411void
412strip_media_tag (char *message)
413{
414 int in_tag = 0;
415 char *dest;
416 char *src;
417 339
418 src = dest = message; 340 pthread_sigmask (SIG_SETMASK, &fullsigset, &oldsigset);
419 while (*src != '\0')
420 {
421 if (*src == '[')
422 {
423 in_tag = 1;
424 }
425 else if (in_tag && (*src == ']'))
426 in_tag = 0;
427 else if (!in_tag)
428 {
429 *dest = *src;
430 dest++;
431 }
432 src++;
433 }
434 *dest = '\0';
435}
436 341
437const char * 342 if (pthread_create (&id, &attr, start_routine, arg))
438strrstr (const char *haystack, const char *needle) 343 cleanup ("unable to create a new thread");
439{
440 const char *lastneedle;
441 344
442 lastneedle = NULL; 345 pthread_sigmask (SIG_SETMASK, &oldsigset, 0);
443 while ((haystack = strstr (haystack, needle)) != NULL)
444 {
445 lastneedle = haystack;
446 haystack++;
447 }
448 return lastneedle;
449
450} 346}
451 347
452#define EOL_SIZE (sizeof("\n")-1)
453void
454strip_endline (char *buf)
455{
456 if (strlen (buf) < sizeof ("\n"))
457 {
458 return;
459 }
460 if (!strcmp (buf + strlen (buf) - EOL_SIZE, "\n"))
461 buf[strlen (buf) - EOL_SIZE] = '\0';
462}
463
464/**
465 * Replace in string src all occurrences of key by replacement. The resulting
466 * string is put into result; at most resultsize characters (including the
467 * terminating null character) will be written to result.
468 */
469void
470replace (const char *src, const char *key, const char *replacement, char *result, size_t resultsize)
471{
472 size_t resultlen;
473 size_t keylen;
474
475 /* special case to prevent infinite loop if key==replacement=="" */
476 if (strcmp (key, replacement) == 0)
477 {
478 snprintf (result, resultsize, "%s", src);
479 return;
480 }
481
482 keylen = strlen (key);
483
484 resultlen = 0;
485 while (*src != '\0' && resultlen + 1 < resultsize)
486 {
487 if (strncmp (src, key, keylen) == 0)
488 {
489 snprintf (result + resultlen, resultsize - resultlen, "%s", replacement);
490 resultlen += strlen (result + resultlen);
491 src += keylen;
492 }
493 else
494 {
495 result[resultlen++] = *src++;
496 }
497 }
498 result[resultlen] = '\0';
499}
500
501/**
502 * Taking a string as an argument, mutate it into a string that looks like a list.
503 * a 'list' for the purposes here, is a string of items, seperated by commas, except
504 * for the last entry, which has an 'and' before it, and a full stop (period) after it.
505 * This function will also strip all trailing non alphanumeric characters.
506 * It does not insert an oxford comma.
507 */
508
509void
510make_list_like (char *input)
511{
512 char *p, tmp[MAX_BUF];
513 int i;
514
515 if (!input || strlen (input) > MAX_BUF - 5)
516 return;
517 /* bad stuff would happen if we continued here, the -5 is to make space for ' and ' */
518
519 strncpy (tmp, input, MAX_BUF - 5);
520 /*trim all trailing commas, spaces etc. */
521 for (i = strlen (tmp); !isalnum (tmp[i]) && i >= 0; i--)
522 tmp[i] = '\0';
523
524 strcat (tmp, ".");
525
526 p = strrchr (tmp, ',');
527 if (p)
528 {
529 *p = '\0';
530 strcpy (input, tmp);
531 p++;
532 strcat (input, " and");
533 strcat (input, p);
534 }
535 else
536 strcpy (input, tmp);
537
538 return;
539}
540
541/////////////////////////////////////////////////////////////////////////////
542
543#if 0
544refcounted *refcounted::rc_first;
545
546refcounted::refcounted ()
547{
548 refcnt = 0;
549 rc_next = rc_first;
550 rc_first = this;
551}
552
553refcounted::~refcounted ()
554{
555 assert (!rc_next);
556 assert (!refcnt);
557}
558#endif
559
560void *alloc (int s) throw (std::bad_alloc)
561{
562 void *p = g_slice_alloc (s);
563
564 if (!p)
565 throw std::bad_alloc ();
566
567 return p;
568}
569
570void assign (char *dst, const char *src, int maxlen)
571{
572 if (!src)
573 src = "";
574
575 int len = strlen (src);
576
577 if (len >= maxlen - 1)
578 {
579 if (maxlen <= 4)
580 {
581 memset (dst, '.', maxlen - 1);
582 dst [maxlen - 1] = 0;
583 }
584 else
585 {
586 memcpy (dst, src, maxlen - 4);
587 memcpy (dst + maxlen - 4, "...", 4);
588 }
589 }
590 else
591 memcpy (dst, src, len + 1);
592}
593
594

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