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