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

   1 /* $OpenLDAP$ */
   2 /*
   3  * Copyright 1998-1999 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 "ldap-int.h"
  17 #include "ldap_defaults.h"
  18
  19 struct ldapoptions ldap_int_global_options =
  20         { LDAP_UNINITIALIZED, LDAP_DEBUG_NONE };
  21
  22 #undef gopts
  23 #define gopts ldap_int_global_options
  24
  25 #define ATTR_NONE       0
  26 #define ATTR_BOOL       1
  27 #define ATTR_INT        2
  28 #define ATTR_KV         3
  29 #define ATTR_STRING     4
  30 #define ATTR_TLS        5
  31 #define ATTR_URIS       6
  32
  33 struct ol_keyvalue {
  34         const char *            key;
  35         int                     value;
  36 };
  37
  38 static const struct ol_keyvalue deref_kv[] = {
  39         {"never", LDAP_DEREF_NEVER},
  40         {"searching", LDAP_DEREF_SEARCHING},
  41         {"finding", LDAP_DEREF_FINDING},
  42         {"always", LDAP_DEREF_ALWAYS},
  43         {NULL, 0}
  44 };
  45
  46 static const struct ol_attribute {
  47         int                     useronly;
  48         int                     type;
  49         const char *    name;
  50         const void *    data;
  51         size_t          offset;
  52 } attrs[] = {
  53         {0, ATTR_KV,            "DEREF",        deref_kv, /* or &deref_kv[0] */
  54                 offsetof(struct ldapoptions, ldo_deref)},
  55         {0, ATTR_INT,           "SIZELIMIT",    NULL,
  56                 offsetof(struct ldapoptions, ldo_sizelimit)},
  57         {0, ATTR_INT,           "TIMELIMIT",    NULL,
  58                 offsetof(struct ldapoptions, ldo_timelimit)},
  59         {1, ATTR_STRING,        "BINDDN",               NULL,
  60                 offsetof(struct ldapoptions, ldo_defbinddn)},
  61         {0, ATTR_STRING,        "BASE",                 NULL,
  62                 offsetof(struct ldapoptions, ldo_defbase)},
  63         {0, ATTR_INT,           "PORT",                 NULL,
  64                 offsetof(struct ldapoptions, ldo_defport)},
  65         /* **** keep this around for backward compatibility */
  66         {0, ATTR_URIS,          "HOST",                 NULL,   1},
  67         /* **** */
  68         {0, ATTR_URIS,          "URI",                  NULL,   0},
  69         {0, ATTR_BOOL,          "REFERRALS",    NULL,   LDAP_BOOL_REFERRALS},
  70         {0, ATTR_BOOL,          "RESTART",              NULL,   LDAP_BOOL_RESTART},
  71         {0, ATTR_BOOL,          "DNS",                  NULL,   LDAP_BOOL_DNS},
  72         {0, ATTR_TLS,           "TLS",                  NULL,   LDAP_OPT_X_TLS},
  73         {0, ATTR_TLS,           "TLS_CERT",             NULL,   LDAP_OPT_X_TLS_CERTFILE},
  74         {0, ATTR_TLS,           "TLS_KEY",              NULL,   LDAP_OPT_X_TLS_KEYFILE},
  75         {0, ATTR_TLS,           "TLS_CACERT",   NULL,   LDAP_OPT_X_TLS_CACERTFILE},
  76         {0, ATTR_TLS,           "TLS_CACERTDIR",NULL,   LDAP_OPT_X_TLS_CACERTDIR},
  77         {0, ATTR_TLS,           "TLS_REQCERT",  NULL,   LDAP_OPT_X_TLS_REQUIRE_CERT},
  78 #ifdef HAVE_CYRUS_SASL
  79         {0, ATTR_INT,           "SASL_MINSSF",  NULL,
  80                 offsetof(struct ldapoptions, ldo_sasl_minssf)},
  81         {0, ATTR_INT,           "SASL_MAXSSF",  NULL,
  82                 offsetof(struct ldapoptions, ldo_sasl_maxssf)},
  83 #endif
  84         {0, ATTR_NONE,          NULL,           NULL,   0}
  85 };
  86
  87 #define MAX_LDAP_ATTR_LEN  sizeof("TLS_CACERTDIR")
  88 #define MAX_LDAP_ENV_PREFIX_LEN 8
  89
  90 static void openldap_ldap_init_w_conf(
  91         const char *file, int userconf )
  92 {
  93         char linebuf[128];
  94         FILE *fp;
  95         int i;
  96         char *cmd, *opt;
  97         char *start, *end;
  98
  99         if (file == NULL) {
 100                 /* no file name */
 101                 return;
 102         }
 103
 104         Debug(LDAP_DEBUG_TRACE, "ldap_init: trying %s\n", file, 0, 0);
 105
 106         fp = fopen(file, "r");
 107         if(fp == NULL) {
 108                 /* could not open file */
 109                 return;
 110         }
 111
 112         Debug(LDAP_DEBUG_TRACE, "ldap_init: using %s\n", file, 0, 0);
 113
 114         while((start = fgets(linebuf, sizeof(linebuf), fp)) != NULL) {
 115                 /* skip lines starting with '#' */
 116                 if(*start == '#') continue;
 117
 118                 /* trim leading white space */
 119                 while((*start != '\0') && isspace((unsigned char) *start))
 120                         start++;
 121
 122                 /* anything left? */
 123                 if(*start == '\0') continue;
 124
 125                 /* trim trailing white space */
 126                 end = &start[strlen(start)-1];
 127                 while(isspace((unsigned char)*end)) end--;
 128                 end[1] = '\0';
 129
 130                 /* anything left? */
 131                 if(*start == '\0') continue;
 132
 133
 134                 /* parse the command */
 135                 cmd=start;
 136                 while((*start != '\0') && !isspace((unsigned char)*start)) {
 137                         start++;
 138                 }
 139                 if(*start == '\0') {
 140                         /* command has no argument */
 141                         continue;
 142                 }
 143
 144                 *start++ = '\0';
 145
 146                 /* we must have some whitespace to skip */
 147                 while(isspace((unsigned char)*start)) start++;
 148                 opt = start;
 149
 150                 for(i=0; attrs[i].type != ATTR_NONE; i++) {
 151                         void *p;
 152
 153                         if( !userconf && attrs[i].useronly ) {
 154                                 continue;
 155                         }
 156
 157                         if(strcasecmp(cmd, attrs[i].name) != 0) {
 158                                 continue;
 159                         }
 160
 161                         switch(attrs[i].type) {
 162                         case ATTR_BOOL:
 163                                 if((strcasecmp(opt, "on") == 0)
 164                                         || (strcasecmp(opt, "yes") == 0)
 165                                         || (strcasecmp(opt, "true") == 0))
 166                                 {
 167                                         LDAP_BOOL_SET(&gopts, attrs[i].offset);
 168
 169                                 } else {
 170                                         LDAP_BOOL_CLR(&gopts, attrs[i].offset);
 171                                 }
 172
 173                                 break;
 174
 175                         case ATTR_INT:
 176                                 p = &((char *) &gopts)[attrs[i].offset];
 177                                 * (int*) p = atoi(opt);
 178                                 break;
 179
 180                         case ATTR_KV: {
 181                                         const struct ol_keyvalue *kv;
 182
 183                                         for(kv = attrs[i].data;
 184                                                 kv->key != NULL;
 185                                                 kv++) {
 186
 187                                                 if(strcasecmp(opt, kv->key) == 0) {
 188                                                         p = &((char *) &gopts)[attrs[i].offset];
 189                                                         * (int*) p = kv->value;
 190                                                         break;
 191                                                 }
 192                                         }
 193                                 } break;
 194
 195                         case ATTR_STRING:
 196                                 p = &((char *) &gopts)[attrs[i].offset];
 197                                 if (* (char**) p != NULL) LDAP_FREE(* (char**) p);
 198                                 * (char**) p = LDAP_STRDUP(opt);
 199                                 break;
 200                         case ATTR_TLS:
 201 #ifdef HAVE_TLS
 202                                 ldap_pvt_tls_config( &gopts, attrs[i].offset, opt );
 203 #endif
 204                                 break;
 205                         case ATTR_URIS:
 206                                 if (attrs[i].offset == 0) {
 207                                         ldap_set_option( NULL, LDAP_OPT_URI, opt );
 208                                 } else {
 209                                         ldap_set_option( NULL, LDAP_OPT_HOST_NAME, opt );
 210                                 }
 211                                 break;
 212                         }
 213                         break;
 214                 }
 215         }
 216
 217         fclose(fp);
 218 }
 219
 220 static void openldap_ldap_init_w_sysconf(const char *file)
 221 {
 222         openldap_ldap_init_w_conf( file, 0 );
 223 }
 224
 225 static void openldap_ldap_init_w_userconf(const char *file)
 226 {
 227         char *home;
 228         char *path = NULL;
 229
 230         if (file == NULL) {
 231                 /* no file name */
 232                 return;
 233         }
 234
 235         home = getenv("HOME");
 236
 237         if (home != NULL) {
 238                 Debug(LDAP_DEBUG_TRACE, "ldap_init: HOME env is %s\n",
 239                       home, 0, 0);
 240                 path = LDAP_MALLOC(strlen(home) + strlen(file) + 3);
 241         } else {
 242                 Debug(LDAP_DEBUG_TRACE, "ldap_init: HOME env is NULL\n",
 243                       0, 0, 0);
 244         }
 245
 246         if(home != NULL && path != NULL) {
 247                 /* we assume UNIX path syntax is used... */
 248
 249                 /* try ~/file */
 250                 sprintf(path, "%s/%s", home, file);
 251                 openldap_ldap_init_w_conf(path, 1);
 252
 253                 /* try ~/.file */
 254                 sprintf(path, "%s/.%s", home, file);
 255                 openldap_ldap_init_w_conf(path, 1);
 256         }
 257
 258         if(path != NULL) {
 259                 LDAP_FREE(path);
 260         }
 261
 262         /* try file */
 263         openldap_ldap_init_w_conf(file, 1);
 264 }
 265
 266 static void openldap_ldap_init_w_env(const char *prefix)
 267 {
 268         char buf[MAX_LDAP_ATTR_LEN+MAX_LDAP_ENV_PREFIX_LEN];
 269         int len;
 270         int i;
 271         void *p;
 272         char *value;
 273
 274         if (prefix == NULL) {
 275                 prefix = LDAP_ENV_PREFIX;
 276         }
 277
 278         strncpy(buf, prefix, MAX_LDAP_ENV_PREFIX_LEN);
 279         buf[MAX_LDAP_ENV_PREFIX_LEN] = '\0';
 280         len = strlen(buf);
 281
 282         for(i=0; attrs[i].type != ATTR_NONE; i++) {
 283                 strcpy(&buf[len], attrs[i].name);
 284                 value = getenv(buf);
 285
 286                 if(value == NULL) {
 287                         continue;
 288                 }
 289
 290                 switch(attrs[i].type) {
 291                 case ATTR_BOOL:
 292                         if((strcasecmp(value, "on") == 0)
 293                                 || (strcasecmp(value, "yes") == 0)
 294                                 || (strcasecmp(value, "true") == 0))
 295                         {
 296                                 LDAP_BOOL_SET(&gopts, attrs[i].offset);
 297
 298                         } else {
 299                                 LDAP_BOOL_CLR(&gopts, attrs[i].offset);
 300                         }
 301                         break;
 302
 303                 case ATTR_INT:
 304                         p = &((char *) &gopts)[attrs[i].offset];
 305                         * (int*) p = atoi(value);
 306                         break;
 307
 308                 case ATTR_KV: {
 309                                 const struct ol_keyvalue *kv;
 310
 311                                 for(kv = attrs[i].data;
 312                                         kv->key != NULL;
 313                                         kv++) {
 314
 315                                         if(strcasecmp(value, kv->key) == 0) {
 316                                                 p = &((char *) &gopts)[attrs[i].offset];
 317                                                 * (int*) p = kv->value;
 318                                                 break;
 319                                         }
 320                                 }
 321                         } break;
 322
 323                 case ATTR_STRING:
 324                         p = &((char *) &gopts)[attrs[i].offset];
 325                         if (* (char**) p != NULL) LDAP_FREE(* (char**) p);
 326                         if (*value == '\0') {
 327                                 * (char**) p = NULL;
 328                         } else {
 329                                 * (char**) p = LDAP_STRDUP(value);
 330                         }
 331                         break;
 332                 case ATTR_TLS:
 333 #ifdef HAVE_TLS
 334                         ldap_pvt_tls_config( &gopts, attrs[i].offset, value );
 335 #endif
 336                         break;
 337                 case ATTR_URIS:
 338                         if (attrs[i].offset == 0) {
 339                                 ldap_set_option( NULL, LDAP_OPT_URI, value );
 340                         } else {
 341                                 ldap_set_option( NULL, LDAP_OPT_HOST_NAME, value );
 342                         }
 343                         break;
 344                 }
 345         }
 346 }
 347
 348 void ldap_int_initialize( int *dbglvl )
 349 {
 350         if ( gopts.ldo_valid == LDAP_INITIALIZED ) {
 351                 return;
 352         }
 353
 354         ldap_int_utils_init();
 355
 356 #ifdef HAVE_TLS
 357         ldap_pvt_tls_init();
 358 #endif
 359
 360 #ifdef HAVE_CYRUS_SASL
 361         ldap_pvt_sasl_init();
 362 #endif
 363
 364         if ( ldap_int_tblsize == 0 )
 365                 ldap_int_ip_init();
 366
 367         if (dbglvl)
 368             gopts.ldo_debug = *dbglvl;
 369         else
 370         gopts.ldo_debug = 0;
 371
 372         gopts.ldo_version =     LDAP_VERSION2;
 373         gopts.ldo_deref =       LDAP_DEREF_NEVER;
 374         gopts.ldo_timelimit = LDAP_NO_LIMIT;
 375         gopts.ldo_sizelimit = LDAP_NO_LIMIT;
 376
 377         gopts.ldo_tm_api = (struct timeval *)NULL;
 378         gopts.ldo_tm_net = (struct timeval *)NULL;
 379
 380         /* ldo_defludp is leaked, we should have an at_exit() handler
 381          * to free this and whatever else needs to cleaned up.
 382          */
 383         ldap_url_parselist(&gopts.ldo_defludp, "ldap://localhost/");
 384         gopts.ldo_defport = LDAP_PORT;
 385
 386         gopts.ldo_refhoplimit = LDAP_DEFAULT_REFHOPLIMIT;
 387
 388         LDAP_BOOL_ZERO(&gopts);
 389
 390         LDAP_BOOL_SET(&gopts, LDAP_BOOL_REFERRALS);
 391
 392 #ifdef HAVE_TLS
 393         gopts.ldo_tls_ctx = NULL;
 394 #endif
 395 #ifdef HAVE_CYRUS_SASL
 396         gopts.ldo_sasl_minssf = 0;
 397         gopts.ldo_sasl_maxssf = INT_MAX;
 398 #endif
 399
 400         gopts.ldo_valid = LDAP_INITIALIZED;
 401
 402         if( getenv("LDAPNOINIT") != NULL ) {
 403                 return;
 404         }
 405
 406         openldap_ldap_init_w_sysconf(LDAP_CONF_FILE);
 407         openldap_ldap_init_w_userconf(LDAP_USERRC_FILE);
 408
 409         {
 410                 char *altfile = getenv(LDAP_ENV_PREFIX "CONF");
 411
 412                 if( altfile != NULL ) {
 413                         Debug(LDAP_DEBUG_TRACE, "ldap_init: %s env is %s\n",
 414                               LDAP_ENV_PREFIX "CONF", altfile, 0);
 415                         openldap_ldap_init_w_sysconf( altfile );
 416                 }
 417                 else
 418                         Debug(LDAP_DEBUG_TRACE, "ldap_init: %s env is NULL\n",
 419                               LDAP_ENV_PREFIX "CONF", 0, 0);
 420         }
 421
 422         {
 423                 char *altfile = getenv(LDAP_ENV_PREFIX "RC");
 424
 425                 if( altfile != NULL ) {
 426                         Debug(LDAP_DEBUG_TRACE, "ldap_init: %s env is %s\n",
 427                               LDAP_ENV_PREFIX "RC", altfile, 0);
 428                         openldap_ldap_init_w_userconf( altfile );
 429                 }
 430                 else
 431                         Debug(LDAP_DEBUG_TRACE, "ldap_init: %s env is NULL\n",
 432                               LDAP_ENV_PREFIX "RC", 0, 0);
 433         }
 434
 435         openldap_ldap_init_w_env(NULL);
 436 }