config.c

   1 /*
   2  * Asterisk -- A telephony toolkit for Linux.
   3  *
   4  * Configuration File Parser
   5  *
   6  * Copyright (C) 1999-2004, Digium, Inc.
   7  *
   8  * Mark Spencer <markster@digium.com>
   9  *
  10  * This program is free software, distributed under the terms of
  11  * the GNU General Public License
  12  */
  13
  14 #include <stdio.h>
  15 #include <unistd.h>
  16 #include <stdlib.h>
  17 #include <string.h>
  18 #include <errno.h>
  19 #include <time.h>
  20 #include <asterisk/config.h>
  21 #include <asterisk/config_pvt.h>
  22 #include <asterisk/cli.h>
  23 #include <asterisk/lock.h>
  24 #include <asterisk/options.h>
  25 #include <asterisk/logger.h>
  26 #include <asterisk/utils.h>
  27 #include "asterisk.h"
  28 #include "astconf.h"
  29
  30
  31 static int ast_cust_config=0;
  32 struct ast_config *(*global_load_func)(const char *dbname, const char *table, const char *, struct ast_config *,struct ast_category **,struct ast_variable **,int);
  33
  34 static struct ast_config_map {
  35         struct ast_config_map *next;
  36         char *name;
  37         char *driver;
  38         char *database;
  39         char *table;
  40         char stuff[0];
  41 } *maps = NULL;
  42
  43 AST_MUTEX_DEFINE_STATIC(ast_cust_config_lock);
  44 static struct ast_config_reg *ast_cust_config_list;
  45 static char *config_conf_file = "extconfig.conf";
  46
  47 void ast_destroy_realtime(struct ast_variable *v)
  48 {
  49         struct ast_variable *vn;
  50         while(v) {
  51                 vn = v;
  52                 v = v->next;
  53                 free(vn);
  54         }
  55 }
  56
  57 void ast_destroy(struct ast_config *ast)
  58 {
  59         struct ast_category *cat, *catn;
  60
  61         if (!ast)
  62                 return;
  63
  64         cat = ast->root;
  65         while(cat) {
  66                 ast_destroy_realtime(cat->root);
  67                 catn = cat;
  68                 cat = cat->next;
  69                 free(catn);
  70         }
  71         free(ast);
  72 }
  73
  74 int ast_true(const char *s)
  75 {
  76         if (!s)
  77                 return 0;
  78         /* Determine if this is a true value */
  79         if (!strcasecmp(s, "yes") ||
  80             !strcasecmp(s, "true") ||
  81                 !strcasecmp(s, "y") ||
  82                 !strcasecmp(s, "t") ||
  83                 !strcasecmp(s, "1") ||
  84                 !strcasecmp(s, "on"))
  85                         return -1;
  86         return 0;
  87 }
  88
  89 int ast_false(const char *s)
  90 {
  91         if (!s)
  92                 return 0;
  93         /* Determine if this is a false value */
  94         if (!strcasecmp(s, "no") ||
  95             !strcasecmp(s, "false") ||
  96                 !strcasecmp(s, "n") ||
  97                 !strcasecmp(s, "f") ||
  98                 !strcasecmp(s, "0") ||
  99                 !strcasecmp(s, "off"))
 100                         return -1;
 101         return 0;
 102 }
 103
 104 struct ast_variable *ast_variable_browse(struct ast_config *config, char *category)
 105 {
 106         struct ast_category *cat;
 107         cat = config->root;
 108         while(cat) {
 109                 if (cat->name == category)
 110                         return cat->root;
 111                 cat = cat->next;
 112         }
 113         cat = config->root;
 114         while(cat) {
 115                 if (!strcasecmp(cat->name, category))
 116                         return cat->root;
 117                 cat = cat->next;
 118         }
 119         return NULL;
 120 }
 121
 122 char *ast_variable_retrieve(struct ast_config *config, char *category, char *value)
 123 {
 124         struct ast_variable *v;
 125         if (category) {
 126                 v = ast_variable_browse(config, category);
 127                 while (v) {
 128                         if (value == v->name)
 129                                 return v->value;
 130                         v=v->next;
 131                 }
 132                 v = ast_variable_browse(config, category);
 133                 while (v) {
 134                         if (!strcasecmp(value, v->name))
 135                                 return v->value;
 136                         v=v->next;
 137                 }
 138         } else {
 139                 struct ast_category *cat;
 140                 cat = config->root;
 141                 while(cat) {
 142                         v = cat->root;
 143                         while (v) {
 144                                 if (!strcasecmp(value, v->name))
 145                                         return v->value;
 146                                 v=v->next;
 147                         }
 148                         cat = cat->next;
 149                 }
 150         }
 151         return NULL;
 152 }
 153
 154 int ast_category_exist(struct ast_config *config, char *category_name)
 155 {
 156         struct ast_category *category = NULL;
 157
 158         category = config->root;
 159
 160         while(category) {
 161                 if (!strcasecmp(category->name,category_name))
 162                         return 1;
 163                 category = category->next;
 164         }
 165
 166         return 0;
 167 }
 168
 169
 170 static struct ast_config_reg *get_ast_cust_config_keyword(const char *name, char *database, int dbsiz, char *table, int tabsiz)
 171 {
 172         struct ast_config_reg *reg,*ret=NULL;
 173         struct ast_config_map *map;
 174
 175         ast_mutex_lock(&ast_cust_config_lock);
 176         map = maps;
 177         while(map) {
 178                 if (!strcasecmp(name, map->name)) {
 179                         strncpy(database, map->database, dbsiz - 1);
 180                         if (map->table)
 181                                 strncpy(table, map->table, tabsiz - 1);
 182                         else
 183                                 strncpy(table, name, tabsiz - 1);
 184                         break;
 185                 }
 186                 map = map->next;
 187         }
 188         if (map) {
 189                 for (reg=ast_cust_config_list;reg && !ret;reg=reg->next) {
 190                         if (!strcmp(reg->name,map->driver))
 191                                 ret=reg;
 192                 }
 193         }
 194         ast_mutex_unlock(&ast_cust_config_lock);
 195         return ret;
 196 }
 197
 198 void ast_config_destroy_all(void)
 199 {
 200         struct ast_config_reg *key;
 201         ast_mutex_lock(&ast_cust_config_lock);
 202         for (key=ast_cust_config_list;key;key=key->next) {
 203                 ast_config_deregister(key);
 204         }
 205         ast_cust_config_list = NULL;
 206         ast_mutex_unlock(&ast_cust_config_lock);
 207 }
 208
 209 static struct ast_config_reg *get_config_registrations(void)
 210 {
 211         return ast_cust_config_list;
 212 }
 213
 214
 215 static struct ast_config *__ast_load(const char *configfile, struct ast_config *tmp, struct ast_category **_tmpc, struct ast_variable **_last, int includelevel);
 216
 217 static int cfg_process(struct ast_config *tmp, struct ast_category **_tmpc, struct ast_variable **_last, char *buf, int lineno, const char *configfile, int includelevel )
 218 {
 219         char *c;
 220         char *cur;
 221         char *arg=NULL;
 222         struct ast_variable *v;
 223         int object;
 224         /* Strip off lines using ; as comment */
 225         c = strchr(buf, ';');
 226         while (c) {
 227                 if ((c == buf) || (*(c-1) != '\\')) {
 228                         *c = '\0';
 229                 } else {
 230                         *(c-1) = ';';
 231                         memmove(c, c + 1, strlen(c + 1));
 232                 }
 233                 c = strchr(c + 1, ';');
 234         }
 235         cur = ast_strip(buf);
 236         if (!ast_strlen_zero(cur)) {
 237                 /* Actually parse the entry */
 238                 if (cur[0] == '[') {
 239                         /* A category header */
 240                         c = strchr(cur, ']');
 241                         if (c) {
 242                                 *c = 0;
 243                                 *_tmpc = malloc(sizeof(struct ast_category));
 244                                 if (!*_tmpc) {
 245                                         ast_destroy(tmp);
 246                                         ast_log(LOG_WARNING,
 247                                                 "Out of memory, line %d\n", lineno);
 248                                         return -1;
 249                                 }
 250                                 memset(*_tmpc, 0, sizeof(struct ast_category));
 251                                 strncpy((*_tmpc)->name, cur+1, sizeof((*_tmpc)->name) - 1);
 252                                 (*_tmpc)->root =  NULL;
 253                                 if (!tmp->prev)
 254                                         tmp->root = *_tmpc;
 255                                 else
 256                                         tmp->prev->next = *_tmpc;
 257
 258                                 tmp->prev = *_tmpc;
 259                                 *_last =  NULL;
 260                         } else {
 261                                 ast_log(LOG_WARNING,
 262                                         "parse error: no closing ']', line %d of %s\n", lineno, configfile);
 263                         }
 264                 } else if (cur[0] == '#') {
 265                         /* A directive */
 266                         cur++;
 267                         c = cur;
 268                         while(*c && (*c > 32)) c++;
 269                         if (*c) {
 270                                 *c = '\0';
 271                                 c++;
 272                                 /* Find real argument */
 273                                 while(*c  && (*c < 33)) c++;
 274                                 if (!*c)
 275                                         c = NULL;
 276                         } else
 277                                 c = NULL;
 278                         if (!strcasecmp(cur, "include")) {
 279                                 /* A #include */
 280                                 if (c) {
 281                                         while((*c == '<') || (*c == '>') || (*c == '\"')) c++;
 282                                         /* Get rid of leading mess */
 283                                         cur = c;
 284                                         while (!ast_strlen_zero(cur)) {
 285                                                 c = cur + strlen(cur) - 1;
 286                                                 if ((*c == '>') || (*c == '<') || (*c == '\"'))
 287                                                         *c = '\0';
 288                                                 else
 289                                                         break;
 290                                         }
 291
 292                                         if((c = strchr(cur,':'))) {
 293                                                 *c = '\0';
 294                                                 c++;
 295                                                 arg = c;
 296                                         }
 297
 298                                         if (includelevel < MAX_INCLUDE_LEVEL) {
 299                                                 if(arg && cur) {
 300                                                         ast_log(LOG_WARNING, "Including files with explicit config engine no longer permitted.  Please use extconfig.conf to specify all mappings\n");
 301                                                 } else {
 302                                                         __ast_load(cur, tmp, _tmpc, _last, includelevel + 1);
 303                                                 }
 304                                         } else
 305                                                 ast_log(LOG_WARNING, "Maximum Include level (%d) exceeded\n", includelevel);
 306                                 } else
 307                                         ast_log(LOG_WARNING, "Directive '#include' needs an argument (filename) at line %d of %s\n", lineno, configfile);
 308                                 /* Strip off leading and trailing "'s and <>'s */
 309                         }
 310                         else
 311                                 ast_log(LOG_WARNING, "Unknown directive '%s' at line %d of %s\n", cur, lineno, configfile);
 312                 } else {
 313                         /* Just a line (variable = value) */
 314                         if (!*_tmpc) {
 315                                 ast_log(LOG_WARNING,
 316                                         "parse error: No category context for line %d of %s\n", lineno, configfile);
 317                                 ast_destroy(tmp);
 318                                 return -1;
 319                         }
 320                         c = strchr(cur, '=');
 321                         if (c) {
 322                                 *c = 0;
 323                                 c++;
 324                                 /* Ignore > in => */
 325                                 if (*c== '>') {
 326                                         object = 1;
 327                                         c++;
 328                                 } else
 329                                         object = 0;
 330                                 v = ast_new_variable(ast_strip(cur), ast_strip(c));
 331                                 if (v) {
 332                                         v->next = NULL;
 333                                         v->lineno = lineno;
 334                                         v->object = object;
 335                                         /* Put and reset comments */
 336                                         v->blanklines = 0;
 337                                         if (*_last)
 338                                                 (*_last)->next = v;
 339                                         else
 340                                                 (*_tmpc)->root = v;
 341                                         *_last = v;
 342                                 } else {
 343                                         ast_destroy(tmp);
 344                                         ast_log(LOG_WARNING, "Out of memory, line %d\n", lineno);
 345                                         return -1;
 346                                 }
 347                         } else {
 348                                 ast_log(LOG_WARNING, "No '=' (equal sign) in line %d of %s\n", lineno, configfile);
 349                         }
 350
 351                 }
 352         }
 353         return 0;
 354 }
 355
 356 int ast_save(char *configfile, struct ast_config *cfg, char *generator)
 357 {
 358         FILE *f;
 359         char fn[256];
 360         char date[256]="";
 361         time_t t;
 362         struct ast_variable *var;
 363         struct ast_category *cat;
 364         int blanklines = 0;
 365         if (configfile[0] == '/') {
 366                 strncpy(fn, configfile, sizeof(fn)-1);
 367         } else {
 368                 snprintf(fn, sizeof(fn), "%s/%s", AST_CONFIG_DIR, configfile);
 369         }
 370         time(&t);
 371         strncpy(date, ctime(&t), sizeof(date) - 1);
 372         if ((f = fopen(fn, "w"))) {
 373                 if ((option_verbose > 1) && !option_debug)
 374                         ast_verbose(  VERBOSE_PREFIX_2 "Saving '%s': ", fn);
 375                 fprintf(f, ";!\n");
 376                 fprintf(f, ";! Automatically generated configuration file\n");
 377                 fprintf(f, ";! Filename: %s (%s)\n", configfile, fn);
 378                 fprintf(f, ";! Generator: %s\n", generator);
 379                 fprintf(f, ";! Creation Date: %s", date);
 380                 fprintf(f, ";!\n");
 381                 cat = cfg->root;
 382                 while(cat) {
 383                         /* Dump section with any appropriate comment */
 384                         fprintf(f, "[%s]\n", cat->name);
 385                         var = cat->root;
 386                         while(var) {
 387                                 if (var->sameline)
 388                                         fprintf(f, "%s %s %s  ; %s\n", var->name, (var->object ? "=>" : "="), var->value, var->sameline->cmt);
 389                                 else
 390                                         fprintf(f, "%s %s %s\n", var->name, (var->object ? "=>" : "="), var->value);
 391                                 if (var->blanklines) {
 392                                         blanklines = var->blanklines;
 393                                         while (blanklines) {
 394                                                 fprintf(f, "\n");
 395                                                 blanklines--;
 396                                         }
 397                                 }
 398
 399                                 var = var->next;
 400                         }
 401 #if 0
 402                         /* Put an empty line */
 403                         fprintf(f, "\n");
 404 #endif
 405                         cat = cat->next;
 406                 }
 407         } else {
 408                 if (option_debug)
 409                         printf("Unable to open for writing: %s\n", fn);
 410                 else if (option_verbose > 1)
 411                         printf( "Unable to write (%s)", strerror(errno));
 412                 return -1;
 413         }
 414         fclose(f);
 415         return 0;
 416 }
 417
 418
 419 struct ast_variable *ast_load_realtime(const char *family, ...)
 420 {
 421         struct ast_config_reg *reg;
 422         char db[256]="";
 423         char table[256]="";
 424         struct ast_variable *res=NULL;
 425         va_list ap;
 426         va_start(ap, family);
 427         reg = get_ast_cust_config_keyword(family, db, sizeof(db), table, sizeof(table));
 428         if (reg && reg->realtime_func)
 429                 res = reg->realtime_func(db, table, ap);
 430         va_end(ap);
 431         return res;
 432 }
 433
 434 int ast_update_realtime(const char *family, const char *keyfield, const char *lookup, ...)
 435 {
 436         struct ast_config_reg *reg;
 437         int res = -1;
 438         char db[256]="";
 439         char table[256]="";
 440         va_list ap;
 441         va_start(ap, lookup);
 442         reg = get_ast_cust_config_keyword(family, db, sizeof(db), table, sizeof(table));
 443         if (reg && reg->update_func)
 444                 res = reg->update_func(db, table, keyfield, lookup, ap);
 445         va_end(ap);
 446         return res;
 447 }
 448
 449 static struct ast_config *__ast_load(const char *configfile, struct ast_config *tmp, struct ast_category **_tmpc, struct ast_variable **_last, int includelevel)
 450 {
 451         char fn[256];
 452         char buf[8192];
 453         char db[256];
 454         char table[256];
 455         FILE *f;
 456         int lineno=0;
 457         int master=0;
 458         struct ast_config_reg *reg=NULL;
 459         struct ast_config *(*load_func)(const char *database, const char *table, const char *, struct ast_config *,struct ast_category **,struct ast_variable **,int);
 460
 461         load_func=NULL;
 462         if (strcmp(configfile,config_conf_file) && strcmp(configfile,"asterisk.conf") && ast_cust_config_list) {
 463                 if (global_load_func) {
 464                         load_func = global_load_func;
 465                 } else {
 466                         reg = get_ast_cust_config_keyword(configfile, db, sizeof(db), table, sizeof(table));
 467                         if (reg && reg->static_func) {
 468                                 load_func = reg->static_func;
 469                         } else {
 470                                 reg = get_ast_cust_config_keyword(configfile, db, sizeof(db), table, sizeof(table));
 471                                 if (reg && reg->static_func)
 472                                         global_load_func = load_func = reg->static_func;
 473                         }
 474                 }
 475
 476                 if (load_func) {
 477                         ast_log(LOG_NOTICE,"Loading Config %s via %s engine\n",configfile,reg && reg->name ? reg->name : "global");
 478                         tmp = load_func(db, table, configfile,tmp, _tmpc, _last, includelevel);
 479
 480                         if (tmp)
 481                                 return tmp;
 482                 }
 483         }
 484
 485         if (configfile[0] == '/') {
 486                 strncpy(fn, configfile, sizeof(fn)-1);
 487         } else {
 488                 snprintf(fn, sizeof(fn), "%s/%s", (char *)ast_config_AST_CONFIG_DIR, configfile);
 489         }
 490         if ((option_verbose > 1) && !option_debug) {
 491                 ast_verbose(  VERBOSE_PREFIX_2 "Parsing '%s': ", fn);
 492                 fflush(stdout);
 493         }
 494         if ((f = fopen(fn, "r"))) {
 495                 if (option_debug)
 496                         ast_log(LOG_DEBUG, "Parsing %s\n", fn);
 497                 else if (option_verbose > 1)
 498                         ast_verbose( "Found\n");
 499                 if (!tmp) {
 500                         tmp = malloc(sizeof(struct ast_config));
 501                         if (tmp)
 502                                 memset(tmp, 0, sizeof(struct ast_config));
 503
 504                         master = 1;
 505                 }
 506                 if (!tmp) {
 507                         ast_log(LOG_WARNING, "Out of memory\n");
 508                         fclose(f);
 509                         return NULL;
 510                 }
 511                 while(!feof(f)) {
 512                         lineno++;
 513                         if (fgets(buf, sizeof(buf), f)) {
 514                                 if (cfg_process(tmp, _tmpc, _last, buf, lineno, configfile, includelevel)) {
 515                                         fclose(f);
 516                                         return NULL;
 517                                 }
 518                         }
 519                 }
 520                 fclose(f);
 521         } else {
 522                 if (option_debug)
 523                         ast_log(LOG_DEBUG, "No file to parse: %s\n", fn);
 524                 else if (option_verbose > 1)
 525                         ast_verbose( "Not found (%s)\n", strerror(errno));
 526         }
 527         return tmp;
 528 }
 529
 530 int ast_config_register(struct ast_config_reg *new)
 531 {
 532         struct ast_config_reg *ptr;
 533         ast_mutex_lock(&ast_cust_config_lock);
 534         if (!ast_cust_config_list) {
 535                 ast_cust_config_list = new;
 536         } else {
 537                 for(ptr=ast_cust_config_list;ptr->next;ptr=ptr->next);
 538                         ptr->next = new;
 539         }
 540         ast_mutex_unlock(&ast_cust_config_lock);
 541         ast_log(LOG_NOTICE,"Registered Config Engine %s\n",new->name);
 542         return 1;
 543 }
 544
 545 int ast_config_deregister(struct ast_config_reg *del)
 546 {
 547         struct ast_config_reg *ptr=NULL,*last=NULL;
 548         ast_mutex_lock(&ast_cust_config_lock);
 549         for (ptr=ast_cust_config_list;ptr;ptr=ptr->next) {
 550                 if (ptr == del) {
 551                         if (last && ptr->next) {
 552                                 last->next = ptr->next;
 553                         } else if (last && ! ptr->next) {
 554                                 last->next = NULL;
 555                         } else if (!last && ptr->next) {
 556                                 ast_cust_config_list = ptr->next;
 557                         } else if (!last && !ptr->next) {
 558                                 ast_cust_config_list = NULL;
 559                         }
 560                 }
 561                 last = ptr;
 562         }
 563         ast_mutex_unlock(&ast_cust_config_lock);
 564         return 0;
 565 }
 566
 567 int ast_cust_config_active(void) {
 568         return (ast_cust_config >0) ? 1 : 0;
 569 }
 570
 571 struct ast_config *ast_load(char *configfile)
 572 {
 573         struct ast_category *tmpc=NULL;
 574         struct ast_variable *last = NULL;
 575
 576         return __ast_load(configfile, NULL, &tmpc, &last, 0);
 577 }
 578
 579 char *ast_category_browse(struct ast_config *config, char *prev)
 580 {
 581         struct ast_category *cat;
 582         if (!prev) {
 583                 if (config->root)
 584                         return config->root->name;
 585                 else
 586                         return NULL;
 587         }
 588         cat = config->root;
 589         while(cat) {
 590                 if (cat->name == prev) {
 591                         if (cat->next)
 592                                 return cat->next->name;
 593                         else
 594                                 return NULL;
 595                 }
 596                 cat = cat->next;
 597         }
 598         cat = config->root;
 599         while(cat) {
 600                 if (!strcasecmp(cat->name, prev)) {
 601                         if (cat->next)
 602                                 return cat->next->name;
 603                         else
 604                                 return NULL;
 605                 }
 606                 cat = cat->next;
 607         }
 608         return NULL;
 609 }
 610
 611
 612 struct ast_config *ast_new_config(void)
 613 {
 614         struct ast_config *config;
 615         config = malloc(sizeof(struct ast_config));
 616         memset(config,0,sizeof(struct ast_config));
 617         return config;
 618 }
 619
 620
 621
 622 struct ast_category *ast_new_category(char *name)
 623 {
 624         struct ast_category *category;
 625         category = malloc(sizeof(struct ast_category));
 626         if (category) {
 627                 memset(category,0,sizeof(struct ast_category));
 628                 strncpy(category->name,name,sizeof(category->name) - 1);
 629         }
 630         return category;
 631 }
 632
 633
 634 struct ast_variable *ast_new_variable(char *name, char *value)
 635 {
 636         struct ast_variable *variable;
 637         int length = strlen(name) + strlen(value) + 2 + sizeof(struct ast_variable);
 638         variable = malloc(length);
 639         if (variable) {
 640                 memset(variable, 0, length);
 641                 variable->name = variable->stuff;
 642                 variable->value = variable->stuff + strlen(name) + 1;
 643                 variable->object=0;
 644                 strcpy(variable->name,name);
 645                 strcpy(variable->value,value);
 646         }
 647         return variable;
 648 }
 649
 650 int ast_cust_config_register(struct ast_config_reg *new)
 651 {
 652         ast_config_register(new);
 653         read_ast_cust_config();
 654         return 1;
 655 }
 656 int ast_cust_config_deregister(struct ast_config_reg *new)
 657 {
 658         ast_config_deregister(new);
 659         read_ast_cust_config();
 660         return 1;
 661 }
 662
 663 static void clear_cust_keywords(void)
 664 {
 665         struct ast_config_map *map, *prev;
 666         ast_mutex_lock(&ast_cust_config_lock);
 667         map = maps;
 668         while(map) {
 669                 prev = map;
 670                 map = map->next;
 671                 free(prev);
 672         }
 673         maps = NULL;
 674         ast_mutex_unlock(&ast_cust_config_lock);
 675 }
 676
 677 static int config_command(int fd, int argc, char **argv)
 678 {
 679         struct ast_config_reg *key;
 680         struct ast_config_map *map;
 681
 682         ast_cli(fd,"\n\n");
 683         ast_mutex_lock(&ast_cust_config_lock);
 684         for (key=get_config_registrations();key;key=key->next) {
 685                 ast_cli(fd,"\nConfig Engine: %s\n",key->name);
 686                 map = maps;
 687                 while(map) {
 688                         if (!strcasecmp(map->driver, key->name))
 689                                 ast_cli(fd,"===> %s (db=%s, table=%s)\n",map->name, map->database, map->table ? map->table : map->name);
 690                         map = map->next;
 691                 }
 692         }
 693         ast_mutex_unlock(&ast_cust_config_lock);
 694         ast_cli(fd,"\n\n");
 695
 696         return 0;
 697 }
 698
 699 static struct ast_cli_entry config_command_struct = {
 700   { "show","config","handles", NULL }, config_command,
 701   "Show Config Handles", NULL };
 702
 703 int register_config_cli()
 704 {
 705         return ast_cli_register(&config_command_struct);
 706 }
 707
 708 int read_ast_cust_config(void)
 709 {
 710         char *cfg = config_conf_file;
 711         struct ast_config *config;
 712         struct ast_variable *v;
 713         struct ast_config_map *map;
 714         int length;
 715         char *driver, *table, *database, *stringp;
 716
 717         clear_cust_keywords();
 718         config = ast_load(cfg);
 719         if (config) {
 720                 for (v = ast_variable_browse(config,"settings");v;v=v->next) {
 721                         stringp = v->value;
 722                         driver = strsep(&stringp, ",");
 723                         database = strsep(&stringp, ",");
 724                         table = strsep(&stringp, ",");
 725
 726                         if (!strcmp(v->name,config_conf_file) || !strcmp(v->name,"asterisk.conf")) {
 727                                 ast_log(LOG_WARNING, "Cannot bind asterisk.conf or extconfig.conf!\n");
 728                         } else if (driver && database) {
 729                                 length = sizeof(struct ast_config_map);
 730                                 length += strlen(v->name) + 1;
 731                                 length += strlen(driver) + 1;
 732                                 length += strlen(database) + 1;
 733                                 if (table)
 734                                         length += strlen(table) + 1;
 735                                 map = malloc(length);
 736                                 if (map) {
 737                                         memset(map, 0, length);
 738                                         map->name = map->stuff;
 739                                         strcpy(map->name, v->name);
 740                                         map->driver = map->name + strlen(map->name) + 1;
 741                                         strcpy(map->driver, driver);
 742                                         map->database = map->driver + strlen(map->driver) + 1;
 743                                         strcpy(map->database, database);
 744                                         if (table) {
 745                                                 map->table = map->database + strlen(map->database) + 1;
 746                                                 strcpy(map->table, table);
 747                                         } else
 748                                                 map->table = NULL;
 749                                         map->next = maps;
 750                                         if (option_verbose > 1)
 751                                                 ast_verbose(VERBOSE_PREFIX_2 "Binding %s to %s/%s/%s\n",map->name,map->driver, map->database, map->table ? map->table : map->name);
 752                                         maps = map;
 753                                 }
 754                         }
 755                 }
 756
 757                 ast_destroy(config);
 758         }
 759
 760         return 0;
 761 }