git.sur5r.net Git - openldap/blob - libraries/libldap/init.c

   1 /* $OpenLDAP$ */
   2 /*
   3  * Copyright 1998-2000 The OpenLDAP Foundation, All Rights Reserved.
   4  * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
   5  */
   6 #include "portable.h"
   7
   8 #include <stdio.h>
   9 #include <ac/stdlib.h>
  10
  11 #include <ac/socket.h>
  12 #include <ac/string.h>
  13 #include <ac/ctype.h>
  14 #include <ac/time.h>
  15
  16 #include <limits.h>
  17
  18 #include "ldap-int.h"
  19 #include "ldap_defaults.h"
  20
  21 struct ldapoptions ldap_int_global_options =
  22         { LDAP_UNINITIALIZED, LDAP_DEBUG_NONE };
  23
  24 #define ATTR_NONE       0
  25 #define ATTR_BOOL       1
  26 #define ATTR_INT        2
  27 #define ATTR_KV         3
  28 #define ATTR_STRING     4
  29 #define ATTR_TLS        5
  30 #define ATTR_URIS       6
  31
  32 struct ol_keyvalue {
  33         const char *            key;
  34         int                     value;
  35 };
  36
  37 static const struct ol_keyvalue deref_kv[] = {
  38         {"never", LDAP_DEREF_NEVER},
  39         {"searching", LDAP_DEREF_SEARCHING},
  40         {"finding", LDAP_DEREF_FINDING},
  41         {"always", LDAP_DEREF_ALWAYS},
  42         {NULL, 0}
  43 };
  44
  45 static const struct ol_attribute {
  46         int                     useronly;
  47         int                     type;
  48         const char *    name;
  49         const void *    data;
  50         size_t          offset;
  51 } attrs[] = {
  52         {0, ATTR_KV,            "DEREF",        deref_kv, /* or &deref_kv[0] */
  53                 offsetof(struct ldapoptions, ldo_deref)},
  54         {0, ATTR_INT,           "SIZELIMIT",    NULL,
  55                 offsetof(struct ldapoptions, ldo_sizelimit)},
  56         {0, ATTR_INT,           "TIMELIMIT",    NULL,
  57                 offsetof(struct ldapoptions, ldo_timelimit)},
  58         {1, ATTR_STRING,        "BINDDN",               NULL,
  59                 offsetof(struct ldapoptions, ldo_defbinddn)},
  60         {0, ATTR_STRING,        "BASE",                 NULL,
  61                 offsetof(struct ldapoptions, ldo_defbase)},
  62         {0, ATTR_INT,           "PORT",                 NULL,
  63                 offsetof(struct ldapoptions, ldo_defport)},
  64         /* **** keep this around for backward compatibility */
  65         {0, ATTR_URIS,          "HOST",                 NULL,   1},
  66         /* **** */
  67         {0, ATTR_URIS,          "URI",                  NULL,   0},
  68         {0, ATTR_BOOL,          "REFERRALS",    NULL,   LDAP_BOOL_REFERRALS},
  69         {0, ATTR_BOOL,          "RESTART",              NULL,   LDAP_BOOL_RESTART},
  70         {0, ATTR_TLS,           "TLS",                  NULL,   LDAP_OPT_X_TLS},
  71         {0, ATTR_TLS,           "TLS_CERT",             NULL,   LDAP_OPT_X_TLS_CERTFILE},
  72         {0, ATTR_TLS,           "TLS_KEY",              NULL,   LDAP_OPT_X_TLS_KEYFILE},
  73         {0, ATTR_TLS,           "TLS_CACERT",   NULL,   LDAP_OPT_X_TLS_CACERTFILE},
  74         {0, ATTR_TLS,           "TLS_CACERTDIR",NULL,   LDAP_OPT_X_TLS_CACERTDIR},
  75         {0, ATTR_TLS,           "TLS_REQCERT",  NULL,   LDAP_OPT_X_TLS_REQUIRE_CERT},
  76 #ifdef HAVE_CYRUS_SASL
  77         {0, ATTR_INT,           "SASL_MINSSF",  NULL,
  78                 offsetof(struct ldapoptions, ldo_sasl_minssf)},
  79         {0, ATTR_INT,           "SASL_MAXSSF",  NULL,
  80                 offsetof(struct ldapoptions, ldo_sasl_maxssf)},
  81 #endif
  82         {0, ATTR_NONE,          NULL,           NULL,   0}
  83 };
  84
  85 #define MAX_LDAP_ATTR_LEN  sizeof("TLS_CACERTDIR")
  86 #define MAX_LDAP_ENV_PREFIX_LEN 8
  87
  88 static void openldap_ldap_init_w_conf(
  89         const char *file, int userconf )
  90 {
  91         char linebuf[128];
  92         FILE *fp;
  93         int i;
  94         char *cmd, *opt;
  95         char *start, *end;
  96         struct ldapoptions *gopts;
  97
  98         if ((gopts = LDAP_INT_GLOBAL_OPT()) == NULL) {
  99                 return;                 /* Could not allocate mem for global options */
 100         }
 101
 102         if (file == NULL) {
 103                 /* no file name */
 104                 return;
 105         }
 106
 107         Debug(LDAP_DEBUG_TRACE, "ldap_init: trying %s\n", file, 0, 0);
 108
 109         fp = fopen(file, "r");
 110         if(fp == NULL) {
 111                 /* could not open file */
 112                 return;
 113         }
 114
 115         Debug(LDAP_DEBUG_TRACE, "ldap_init: using %s\n", file, 0, 0);
 116
 117         while((start = fgets(linebuf, sizeof(linebuf), fp)) != NULL) {
 118                 /* skip lines starting with '#' */
 119                 if(*start == '#') continue;
 120
 121                 /* trim leading white space */
 122                 while((*start != '\0') && isspace((unsigned char) *start))
 123                         start++;
 124
 125                 /* anything left? */
 126                 if(*start == '\0') continue;
 127
 128                 /* trim trailing white space */
 129                 end = &start[strlen(start)-1];
 130                 while(isspace((unsigned char)*end)) end--;
 131                 end[1] = '\0';
 132
 133                 /* anything left? */
 134                 if(*start == '\0') continue;
 135
 136
 137                 /* parse the command */
 138                 cmd=start;
 139                 while((*start != '\0') && !isspace((unsigned char)*start)) {
 140                         start++;
 141                 }
 142                 if(*start == '\0') {
 143                         /* command has no argument */
 144                         continue;
 145                 }
 146
 147                 *start++ = '\0';
 148
 149                 /* we must have some whitespace to skip */
 150                 while(isspace((unsigned char)*start)) start++;
 151                 opt = start;
 152
 153                 for(i=0; attrs[i].type != ATTR_NONE; i++) {
 154                         void *p;
 155
 156                         if( !userconf && attrs[i].useronly ) {
 157                                 continue;
 158                         }
 159
 160                         if(strcasecmp(cmd, attrs[i].name) != 0) {
 161                                 continue;
 162                         }
 163
 164                         switch(attrs[i].type) {
 165                         case ATTR_BOOL:
 166                                 if((strcasecmp(opt, "on") == 0)
 167                                         || (strcasecmp(opt, "yes") == 0)
 168                                         || (strcasecmp(opt, "true") == 0))
 169                                 {
 170                                         LDAP_BOOL_SET(gopts, attrs[i].offset);
 171
 172                                 } else {
 173                                         LDAP_BOOL_CLR(gopts, attrs[i].offset);
 174                                 }
 175
 176                                 break;
 177
 178                         case ATTR_INT:
 179                                 p = &((char *) gopts)[attrs[i].offset];
 180                                 * (int*) p = atoi(opt);
 181                                 break;
 182
 183                         case ATTR_KV: {
 184                                         const struct ol_keyvalue *kv;
 185
 186                                         for(kv = attrs[i].data;
 187                                                 kv->key != NULL;
 188                                                 kv++) {
 189
 190                                                 if(strcasecmp(opt, kv->key) == 0) {
 191                                                         p = &((char *) gopts)[attrs[i].offset];
 192                                                         * (int*) p = kv->value;
 193                                                         break;
 194                                                 }
 195                                         }
 196                                 } break;
 197
 198                         case ATTR_STRING:
 199                                 p = &((char *) gopts)[attrs[i].offset];
 200                                 if (* (char**) p != NULL) LDAP_FREE(* (char**) p);
 201                                 * (char**) p = LDAP_STRDUP(opt);
 202                                 break;
 203                         case ATTR_TLS:
 204 #ifdef HAVE_TLS
 205                                 ldap_pvt_tls_config( gopts, attrs[i].offset, opt );
 206 #endif
 207                                 break;
 208                         case ATTR_URIS:
 209                                 if (attrs[i].offset == 0) {
 210                                         ldap_set_option( NULL, LDAP_OPT_URI, opt );
 211                                 } else {
 212                                         ldap_set_option( NULL, LDAP_OPT_HOST_NAME, opt );
 213                                 }
 214                                 break;
 215                         }
 216                         break;
 217                 }
 218         }
 219
 220         fclose(fp);
 221 }
 222
 223 static void openldap_ldap_init_w_sysconf(const char *file)
 224 {
 225         openldap_ldap_init_w_conf( file, 0 );
 226 }
 227
 228 static void openldap_ldap_init_w_userconf(const char *file)
 229 {
 230         char *home;
 231         char *path = NULL;
 232
 233         if (file == NULL) {
 234                 /* no file name */
 235                 return;
 236         }
 237
 238         home = getenv("HOME");
 239
 240         if (home != NULL) {
 241                 Debug(LDAP_DEBUG_TRACE, "ldap_init: HOME env is %s\n",
 242                       home, 0, 0);
 243                 path = LDAP_MALLOC(strlen(home) + strlen(file) + 3);
 244         } else {
 245                 Debug(LDAP_DEBUG_TRACE, "ldap_init: HOME env is NULL\n",
 246                       0, 0, 0);
 247         }
 248
 249         if(home != NULL && path != NULL) {
 250                 /* we assume UNIX path syntax is used... */
 251
 252                 /* try ~/file */
 253                 sprintf(path, "%s/%s", home, file);
 254                 openldap_ldap_init_w_conf(path, 1);
 255
 256                 /* try ~/.file */
 257                 sprintf(path, "%s/.%s", home, file);
 258                 openldap_ldap_init_w_conf(path, 1);
 259         }
 260
 261         if(path != NULL) {
 262                 LDAP_FREE(path);
 263         }
 264
 265         /* try file */
 266         openldap_ldap_init_w_conf(file, 1);
 267 }
 268
 269 static void openldap_ldap_init_w_env(
 270                 struct ldapoptions *gopts,
 271                 const char *prefix)
 272 {
 273         char buf[MAX_LDAP_ATTR_LEN+MAX_LDAP_ENV_PREFIX_LEN];
 274         int len;
 275         int i;
 276         void *p;
 277         char *value;
 278
 279         if (prefix == NULL) {
 280                 prefix = LDAP_ENV_PREFIX;
 281         }
 282
 283         strncpy(buf, prefix, MAX_LDAP_ENV_PREFIX_LEN);
 284         buf[MAX_LDAP_ENV_PREFIX_LEN] = '\0';
 285         len = strlen(buf);
 286
 287         for(i=0; attrs[i].type != ATTR_NONE; i++) {
 288                 strcpy(&buf[len], attrs[i].name);
 289                 value = getenv(buf);
 290
 291                 if(value == NULL) {
 292                         continue;
 293                 }
 294
 295                 switch(attrs[i].type) {
 296                 case ATTR_BOOL:
 297                         if((strcasecmp(value, "on") == 0)
 298                                 || (strcasecmp(value, "yes") == 0)
 299                                 || (strcasecmp(value, "true") == 0))
 300                         {
 301                                 LDAP_BOOL_SET(gopts, attrs[i].offset);
 302
 303                         } else {
 304                                 LDAP_BOOL_CLR(gopts, attrs[i].offset);
 305                         }
 306                         break;
 307
 308                 case ATTR_INT:
 309                         p = &((char *) gopts)[attrs[i].offset];
 310                         * (int*) p = atoi(value);
 311                         break;
 312
 313                 case ATTR_KV: {
 314                                 const struct ol_keyvalue *kv;
 315
 316                                 for(kv = attrs[i].data;
 317                                         kv->key != NULL;
 318                                         kv++) {
 319
 320                                         if(strcasecmp(value, kv->key) == 0) {
 321                                                 p = &((char *) gopts)[attrs[i].offset];
 322                                                 * (int*) p = kv->value;
 323                                                 break;
 324                                         }
 325                                 }
 326                         } break;
 327
 328                 case ATTR_STRING:
 329                         p = &((char *) gopts)[attrs[i].offset];
 330                         if (* (char**) p != NULL) LDAP_FREE(* (char**) p);
 331                         if (*value == '\0') {
 332                                 * (char**) p = NULL;
 333                         } else {
 334                                 * (char**) p = LDAP_STRDUP(value);
 335                         }
 336                         break;
 337                 case ATTR_TLS:
 338 #ifdef HAVE_TLS
 339                         ldap_pvt_tls_config( gopts, attrs[i].offset, value );
 340 #endif
 341                         break;
 342                 case ATTR_URIS:
 343                         if (attrs[i].offset == 0) {
 344                                 ldap_set_option( NULL, LDAP_OPT_URI, value );
 345                         } else {
 346                                 ldap_set_option( NULL, LDAP_OPT_HOST_NAME, value );
 347                         }
 348                         break;
 349                 }
 350         }
 351 }
 352
 353 /*
 354  * Initialize the global options structure with default values.
 355  */
 356 void ldap_int_initialize_global_options( struct ldapoptions *gopts, int *dbglvl )
 357 {
 358         if (dbglvl)
 359             gopts->ldo_debug = *dbglvl;
 360         else
 361                 gopts->ldo_debug = 0;
 362
 363         gopts->ldo_version   = LDAP_VERSION2;
 364         gopts->ldo_deref     = LDAP_DEREF_NEVER;
 365         gopts->ldo_timelimit = LDAP_NO_LIMIT;
 366         gopts->ldo_sizelimit = LDAP_NO_LIMIT;
 367
 368         gopts->ldo_tm_api = (struct timeval *)NULL;
 369         gopts->ldo_tm_net = (struct timeval *)NULL;
 370
 371         /* ldo_defludp is leaked, we should have an at_exit() handler
 372          * to free this and whatever else needs to cleaned up.
 373          */
 374         ldap_url_parselist(&gopts->ldo_defludp, "ldap://localhost/");
 375         gopts->ldo_defport = LDAP_PORT;
 376
 377         gopts->ldo_refhoplimit = LDAP_DEFAULT_REFHOPLIMIT;
 378         gopts->ldo_rebindproc = NULL;
 379
 380         LDAP_BOOL_ZERO(gopts);
 381
 382         LDAP_BOOL_SET(gopts, LDAP_BOOL_REFERRALS);
 383
 384 #ifdef HAVE_TLS
 385         gopts->ldo_tls_ctx = NULL;
 386 #endif
 387 #ifdef HAVE_CYRUS_SASL
 388         gopts->ldo_sasl_minssf = 0;
 389         gopts->ldo_sasl_maxssf = INT_MAX;
 390 #endif
 391
 392         gopts->ldo_valid = LDAP_INITIALIZED;
 393
 394         return;
 395 }
 396
 397 void ldap_int_initialize( struct ldapoptions *gopts, int *dbglvl )
 398 {
 399         if ( gopts->ldo_valid == LDAP_INITIALIZED ) {
 400                 return;
 401         }
 402
 403         ldap_int_utils_init();
 404
 405 #ifdef HAVE_TLS
 406         ldap_pvt_tls_init();
 407 #endif
 408
 409 #ifdef HAVE_CYRUS_SASL
 410         ldap_pvt_sasl_init();
 411 #endif
 412
 413         if ( ldap_int_tblsize == 0 )
 414                 ldap_int_ip_init();
 415
 416         ldap_int_initialize_global_options(gopts, NULL);
 417
 418         if( getenv("LDAPNOINIT") != NULL ) {
 419                 return;
 420         }
 421
 422         openldap_ldap_init_w_sysconf(LDAP_CONF_FILE);
 423         openldap_ldap_init_w_userconf(LDAP_USERRC_FILE);
 424
 425         {
 426                 char *altfile = getenv(LDAP_ENV_PREFIX "CONF");
 427
 428                 if( altfile != NULL ) {
 429                         Debug(LDAP_DEBUG_TRACE, "ldap_init: %s env is %s\n",
 430                               LDAP_ENV_PREFIX "CONF", altfile, 0);
 431                         openldap_ldap_init_w_sysconf( altfile );
 432                 }
 433                 else
 434                         Debug(LDAP_DEBUG_TRACE, "ldap_init: %s env is NULL\n",
 435                               LDAP_ENV_PREFIX "CONF", 0, 0);
 436         }
 437
 438         {
 439                 char *altfile = getenv(LDAP_ENV_PREFIX "RC");
 440
 441                 if( altfile != NULL ) {
 442                         Debug(LDAP_DEBUG_TRACE, "ldap_init: %s env is %s\n",
 443                               LDAP_ENV_PREFIX "RC", altfile, 0);
 444                         openldap_ldap_init_w_userconf( altfile );
 445                 }
 446                 else
 447                         Debug(LDAP_DEBUG_TRACE, "ldap_init: %s env is NULL\n",
 448                               LDAP_ENV_PREFIX "RC", 0, 0);
 449         }
 450
 451         openldap_ldap_init_w_env(gopts, NULL);
 452 }