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