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_URIS       5
  30
  31 #define ATTR_SASL       6
  32 #define ATTR_TLS        7
  33
  34 struct ol_keyvalue {
  35         const char *            key;
  36         int                     value;
  37 };
  38
  39 static const struct ol_keyvalue deref_kv[] = {
  40         {"never", LDAP_DEREF_NEVER},
  41         {"searching", LDAP_DEREF_SEARCHING},
  42         {"finding", LDAP_DEREF_FINDING},
  43         {"always", LDAP_DEREF_ALWAYS},
  44         {NULL, 0}
  45 };
  46
  47 static const struct ol_attribute {
  48         int                     useronly;
  49         int                     type;
  50         const char *    name;
  51         const void *    data;
  52         size_t          offset;
  53 } attrs[] = {
  54         {0, ATTR_KV,            "DEREF",        deref_kv, /* or &deref_kv[0] */
  55                 offsetof(struct ldapoptions, ldo_deref)},
  56         {0, ATTR_INT,           "SIZELIMIT",    NULL,
  57                 offsetof(struct ldapoptions, ldo_sizelimit)},
  58         {0, ATTR_INT,           "TIMELIMIT",    NULL,
  59                 offsetof(struct ldapoptions, ldo_timelimit)},
  60         {1, ATTR_STRING,        "BINDDN",               NULL,
  61                 offsetof(struct ldapoptions, ldo_defbinddn)},
  62         {0, ATTR_STRING,        "BASE",                 NULL,
  63                 offsetof(struct ldapoptions, ldo_defbase)},
  64         {0, ATTR_INT,           "PORT",                 NULL,           /* deprecated */
  65                 offsetof(struct ldapoptions, ldo_defport)},
  66         {0, ATTR_URIS,          "HOST",                 NULL,   1},     /* deprecated */
  67         {0, ATTR_URIS,          "URI",                  NULL,   0}, /* replaces HOST/URI */
  68         {0, ATTR_BOOL,          "REFERRALS",    NULL,   LDAP_BOOL_REFERRALS},
  69         {0, ATTR_BOOL,          "RESTART",              NULL,   LDAP_BOOL_RESTART},
  70
  71 #ifdef HAVE_CYRUS_SASL
  72         {0, ATTR_SASL,          "SASL_SECPROPS",NULL,   LDAP_OPT_X_SASL_SECPROPS},
  73 #endif
  74
  75 #ifdef HAVE_TLS
  76         {0, ATTR_TLS,           "TLS",                  NULL,   LDAP_OPT_X_TLS},
  77         {0, ATTR_TLS,           "TLS_CERT",             NULL,   LDAP_OPT_X_TLS_CERTFILE},
  78         {0, ATTR_TLS,           "TLS_KEY",              NULL,   LDAP_OPT_X_TLS_KEYFILE},
  79         {0, ATTR_TLS,           "TLS_CACERT",   NULL,   LDAP_OPT_X_TLS_CACERTFILE},
  80         {0, ATTR_TLS,           "TLS_CACERTDIR",NULL,   LDAP_OPT_X_TLS_CACERTDIR},
  81         {0, ATTR_TLS,           "TLS_REQCERT",  NULL,   LDAP_OPT_X_TLS_REQUIRE_CERT},
  82         {0, ATTR_TLS,           "TLS_RANDFILE", NULL,   LDAP_OPT_X_TLS_RANDOM_FILE},
  83 #endif
  84
  85         {0, ATTR_NONE,          NULL,           NULL,   0}
  86 };
  87
  88 #define MAX_LDAP_ATTR_LEN  sizeof("TLS_CACERTDIR")
  89 #define MAX_LDAP_ENV_PREFIX_LEN 8
  90
  91 static void openldap_ldap_init_w_conf(
  92         const char *file, int userconf )
  93 {
  94         char linebuf[128];
  95         FILE *fp;
  96         int i;
  97         char *cmd, *opt;
  98         char *start, *end;
  99         struct ldapoptions *gopts;
 100
 101         if ((gopts = LDAP_INT_GLOBAL_OPT()) == NULL) {
 102                 return;                 /* Could not allocate mem for global options */
 103         }
 104
 105         if (file == NULL) {
 106                 /* no file name */
 107                 return;
 108         }
 109
 110         Debug(LDAP_DEBUG_TRACE, "ldap_init: trying %s\n", file, 0, 0);
 111
 112         fp = fopen(file, "r");
 113         if(fp == NULL) {
 114                 /* could not open file */
 115                 return;
 116         }
 117
 118         Debug(LDAP_DEBUG_TRACE, "ldap_init: using %s\n", file, 0, 0);
 119
 120         while((start = fgets(linebuf, sizeof(linebuf), fp)) != NULL) {
 121                 /* skip lines starting with '#' */
 122                 if(*start == '#') continue;
 123
 124                 /* trim leading white space */
 125                 while((*start != '\0') && isspace((unsigned char) *start))
 126                         start++;
 127
 128                 /* anything left? */
 129                 if(*start == '\0') continue;
 130
 131                 /* trim trailing white space */
 132                 end = &start[strlen(start)-1];
 133                 while(isspace((unsigned char)*end)) end--;
 134                 end[1] = '\0';
 135
 136                 /* anything left? */
 137                 if(*start == '\0') continue;
 138
 139
 140                 /* parse the command */
 141                 cmd=start;
 142                 while((*start != '\0') && !isspace((unsigned char)*start)) {
 143                         start++;
 144                 }
 145                 if(*start == '\0') {
 146                         /* command has no argument */
 147                         continue;
 148                 }
 149
 150                 *start++ = '\0';
 151
 152                 /* we must have some whitespace to skip */
 153                 while(isspace((unsigned char)*start)) start++;
 154                 opt = start;
 155
 156                 for(i=0; attrs[i].type != ATTR_NONE; i++) {
 157                         void *p;
 158
 159                         if( !userconf && attrs[i].useronly ) {
 160                                 continue;
 161                         }
 162
 163                         if(strcasecmp(cmd, attrs[i].name) != 0) {
 164                                 continue;
 165                         }
 166
 167                         switch(attrs[i].type) {
 168                         case ATTR_BOOL:
 169                                 if((strcasecmp(opt, "on") == 0)
 170                                         || (strcasecmp(opt, "yes") == 0)
 171                                         || (strcasecmp(opt, "true") == 0))
 172                                 {
 173                                         LDAP_BOOL_SET(gopts, attrs[i].offset);
 174
 175                                 } else {
 176                                         LDAP_BOOL_CLR(gopts, attrs[i].offset);
 177                                 }
 178
 179                                 break;
 180
 181                         case ATTR_INT:
 182                                 p = &((char *) gopts)[attrs[i].offset];
 183                                 * (int*) p = atoi(opt);
 184                                 break;
 185
 186                         case ATTR_KV: {
 187                                         const struct ol_keyvalue *kv;
 188
 189                                         for(kv = attrs[i].data;
 190                                                 kv->key != NULL;
 191                                                 kv++) {
 192
 193                                                 if(strcasecmp(opt, kv->key) == 0) {
 194                                                         p = &((char *) gopts)[attrs[i].offset];
 195                                                         * (int*) p = kv->value;
 196                                                         break;
 197                                                 }
 198                                         }
 199                                 } break;
 200
 201                         case ATTR_STRING:
 202                                 p = &((char *) gopts)[attrs[i].offset];
 203                                 if (* (char**) p != NULL) LDAP_FREE(* (char**) p);
 204                                 * (char**) p = LDAP_STRDUP(opt);
 205                                 break;
 206                         case ATTR_URIS:
 207                                 if (attrs[i].offset == 0) {
 208                                         ldap_set_option( NULL, LDAP_OPT_URI, opt );
 209                                 } else {
 210                                         ldap_set_option( NULL, LDAP_OPT_HOST_NAME, opt );
 211                                 }
 212                                 break;
 213                         case ATTR_SASL:
 214 #ifdef HAVE_CYRUS_SASL
 215                                 ldap_int_sasl_config( gopts, attrs[i].offset, opt );
 216 #endif
 217                                 break;
 218                         case ATTR_TLS:
 219 #ifdef HAVE_TLS
 220                                 ldap_int_tls_config( gopts, attrs[i].offset, opt );
 221 #endif
 222                                 break;
 223                         }
 224
 225                         break;
 226                 }
 227         }
 228
 229         fclose(fp);
 230 }
 231
 232 static void openldap_ldap_init_w_sysconf(const char *file)
 233 {
 234         openldap_ldap_init_w_conf( file, 0 );
 235 }
 236
 237 static void openldap_ldap_init_w_userconf(const char *file)
 238 {
 239         char *home;
 240         char *path = NULL;
 241
 242         if (file == NULL) {
 243                 /* no file name */
 244                 return;
 245         }
 246
 247         home = getenv("HOME");
 248
 249         if (home != NULL) {
 250                 Debug(LDAP_DEBUG_TRACE, "ldap_init: HOME env is %s\n",
 251                       home, 0, 0);
 252                 path = LDAP_MALLOC(strlen(home) + strlen(file) + 3);
 253         } else {
 254                 Debug(LDAP_DEBUG_TRACE, "ldap_init: HOME env is NULL\n",
 255                       0, 0, 0);
 256         }
 257
 258         if(home != NULL && path != NULL) {
 259                 /* we assume UNIX path syntax is used... */
 260
 261                 /* try ~/file */
 262                 sprintf(path, "%s/%s", home, file);
 263                 openldap_ldap_init_w_conf(path, 1);
 264
 265                 /* try ~/.file */
 266                 sprintf(path, "%s/.%s", home, file);
 267                 openldap_ldap_init_w_conf(path, 1);
 268         }
 269
 270         if(path != NULL) {
 271                 LDAP_FREE(path);
 272         }
 273
 274         /* try file */
 275         openldap_ldap_init_w_conf(file, 1);
 276 }
 277
 278 static void openldap_ldap_init_w_env(
 279                 struct ldapoptions *gopts,
 280                 const char *prefix)
 281 {
 282         char buf[MAX_LDAP_ATTR_LEN+MAX_LDAP_ENV_PREFIX_LEN];
 283         int len;
 284         int i;
 285         void *p;
 286         char *value;
 287
 288         if (prefix == NULL) {
 289                 prefix = LDAP_ENV_PREFIX;
 290         }
 291
 292         strncpy(buf, prefix, MAX_LDAP_ENV_PREFIX_LEN);
 293         buf[MAX_LDAP_ENV_PREFIX_LEN] = '\0';
 294         len = strlen(buf);
 295
 296         for(i=0; attrs[i].type != ATTR_NONE; i++) {
 297                 strcpy(&buf[len], attrs[i].name);
 298                 value = getenv(buf);
 299
 300                 if(value == NULL) {
 301                         continue;
 302                 }
 303
 304                 switch(attrs[i].type) {
 305                 case ATTR_BOOL:
 306                         if((strcasecmp(value, "on") == 0)
 307                                 || (strcasecmp(value, "yes") == 0)
 308                                 || (strcasecmp(value, "true") == 0))
 309                         {
 310                                 LDAP_BOOL_SET(gopts, attrs[i].offset);
 311
 312                         } else {
 313                                 LDAP_BOOL_CLR(gopts, attrs[i].offset);
 314                         }
 315                         break;
 316
 317                 case ATTR_INT:
 318                         p = &((char *) gopts)[attrs[i].offset];
 319                         * (int*) p = atoi(value);
 320                         break;
 321
 322                 case ATTR_KV: {
 323                                 const struct ol_keyvalue *kv;
 324
 325                                 for(kv = attrs[i].data;
 326                                         kv->key != NULL;
 327                                         kv++) {
 328
 329                                         if(strcasecmp(value, kv->key) == 0) {
 330                                                 p = &((char *) gopts)[attrs[i].offset];
 331                                                 * (int*) p = kv->value;
 332                                                 break;
 333                                         }
 334                                 }
 335                         } break;
 336
 337                 case ATTR_STRING:
 338                         p = &((char *) gopts)[attrs[i].offset];
 339                         if (* (char**) p != NULL) LDAP_FREE(* (char**) p);
 340                         if (*value == '\0') {
 341                                 * (char**) p = NULL;
 342                         } else {
 343                                 * (char**) p = LDAP_STRDUP(value);
 344                         }
 345                         break;
 346                 case ATTR_URIS:
 347                         if (attrs[i].offset == 0) {
 348                                 ldap_set_option( NULL, LDAP_OPT_URI, value );
 349                         } else {
 350                                 ldap_set_option( NULL, LDAP_OPT_HOST_NAME, value );
 351                         }
 352                         break;
 353                 case ATTR_SASL:
 354 #ifdef HAVE_CYRUS_SASL
 355                         ldap_int_sasl_config( gopts, attrs[i].offset, value );
 356 #endif
 357                         break;
 358                 case ATTR_TLS:
 359 #ifdef HAVE_TLS
 360                         ldap_int_tls_config( gopts, attrs[i].offset, value );
 361 #endif
 362                         break;
 363                 }
 364         }
 365 }
 366
 367 /*
 368  * Initialize the global options structure with default values.
 369  */
 370 void ldap_int_initialize_global_options( struct ldapoptions *gopts, int *dbglvl )
 371 {
 372         if (dbglvl)
 373             gopts->ldo_debug = *dbglvl;
 374         else
 375                 gopts->ldo_debug = 0;
 376
 377         gopts->ldo_version   = LDAP_VERSION2;
 378         gopts->ldo_deref     = LDAP_DEREF_NEVER;
 379         gopts->ldo_timelimit = LDAP_NO_LIMIT;
 380         gopts->ldo_sizelimit = LDAP_NO_LIMIT;
 381
 382         gopts->ldo_tm_api = (struct timeval *)NULL;
 383         gopts->ldo_tm_net = (struct timeval *)NULL;
 384
 385         /* ldo_defludp is leaked, we should have an at_exit() handler
 386          * to free this and whatever else needs to cleaned up.
 387          */
 388         ldap_url_parselist(&gopts->ldo_defludp, "ldap://localhost/");
 389         gopts->ldo_defport = LDAP_PORT;
 390
 391         gopts->ldo_refhoplimit = LDAP_DEFAULT_REFHOPLIMIT;
 392         gopts->ldo_rebindproc = NULL;
 393
 394         LDAP_BOOL_ZERO(gopts);
 395
 396         LDAP_BOOL_SET(gopts, LDAP_BOOL_REFERRALS);
 397
 398 #ifdef HAVE_TLS
 399         gopts->ldo_tls_ctx = NULL;
 400 #endif
 401 #ifdef HAVE_CYRUS_SASL
 402         memset( &gopts->ldo_sasl_secprops, '\0', sizeof(gopts->ldo_sasl_secprops) );
 403
 404         gopts->ldo_sasl_secprops.max_ssf = INT_MAX;
 405         gopts->ldo_sasl_secprops.maxbufsize = 65536;
 406         gopts->ldo_sasl_secprops.security_flags = SASL_SEC_NOPLAINTEXT|SASL_SEC_NOANONYMOUS;
 407 #endif
 408
 409         gopts->ldo_valid = LDAP_INITIALIZED;
 410
 411         return;
 412 }
 413
 414 #if defined(LDAP_API_FEATURE_X_OPENLDAP_V2_KBIND) \
 415         || defined(HAVE_TLS) || defined(HAVE_CYRUS_SASL)
 416 char * ldap_int_hostname = "localhost";
 417 #endif
 418
 419 void ldap_int_initialize( struct ldapoptions *gopts, int *dbglvl )
 420 {
 421         if ( gopts->ldo_valid == LDAP_INITIALIZED ) {
 422                 return;
 423         }
 424
 425 #if defined(LDAP_API_FEATURE_X_OPENLDAP_V2_KBIND) \
 426         || defined(HAVE_TLS) || defined(HAVE_CYRUS_SASL)
 427         {
 428                 char hostbuf[MAXHOSTNAMELEN+1];
 429                 if( gethostname( hostbuf, MAXHOSTNAMELEN ) == 0 ) {
 430                         hostbuf[MAXHOSTNAMELEN] = '\0';
 431                         ldap_int_hostname = hostbuf;
 432                 }
 433         }
 434 #endif
 435
 436         ldap_int_utils_init();
 437
 438 #ifdef HAVE_TLS
 439         ldap_pvt_tls_init();
 440 #endif
 441
 442         ldap_int_sasl_init();
 443
 444         if ( ldap_int_tblsize == 0 )
 445                 ldap_int_ip_init();
 446
 447         ldap_int_initialize_global_options(gopts, NULL);
 448
 449         if( getenv("LDAPNOINIT") != NULL ) {
 450                 return;
 451         }
 452
 453         openldap_ldap_init_w_sysconf(LDAP_CONF_FILE);
 454         openldap_ldap_init_w_userconf(LDAP_USERRC_FILE);
 455
 456         {
 457                 char *altfile = getenv(LDAP_ENV_PREFIX "CONF");
 458
 459                 if( altfile != NULL ) {
 460                         Debug(LDAP_DEBUG_TRACE, "ldap_init: %s env is %s\n",
 461                               LDAP_ENV_PREFIX "CONF", altfile, 0);
 462                         openldap_ldap_init_w_sysconf( altfile );
 463                 }
 464                 else
 465                         Debug(LDAP_DEBUG_TRACE, "ldap_init: %s env is NULL\n",
 466                               LDAP_ENV_PREFIX "CONF", 0, 0);
 467         }
 468
 469         {
 470                 char *altfile = getenv(LDAP_ENV_PREFIX "RC");
 471
 472                 if( altfile != NULL ) {
 473                         Debug(LDAP_DEBUG_TRACE, "ldap_init: %s env is %s\n",
 474                               LDAP_ENV_PREFIX "RC", altfile, 0);
 475                         openldap_ldap_init_w_userconf( altfile );
 476                 }
 477                 else
 478                         Debug(LDAP_DEBUG_TRACE, "ldap_init: %s env is NULL\n",
 479                               LDAP_ENV_PREFIX "RC", 0, 0);
 480         }
 481
 482         openldap_ldap_init_w_env(gopts, NULL);
 483 }