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         fp = fopen(file, "r");
 105         if(fp == NULL) {
 106                 /* could not open file */
 107                 return;
 108         }
 109
 110         while((start = fgets(linebuf, sizeof(linebuf), fp)) != NULL) {
 111                 /* skip lines starting with '#' */
 112                 if(*start == '#') continue;
 113
 114                 /* trim leading white space */
 115                 while((*start != '\0') && isspace((unsigned char) *start))
 116                         start++;
 117
 118                 /* anything left? */
 119                 if(*start == '\0') continue;
 120
 121                 /* trim trailing white space */
 122                 end = &start[strlen(start)-1];
 123                 while(isspace((unsigned char)*end)) end--;
 124                 end[1] = '\0';
 125
 126                 /* anything left? */
 127                 if(*start == '\0') continue;
 128
 129
 130                 /* parse the command */
 131                 cmd=start;
 132                 while((*start != '\0') && !isspace((unsigned char)*start)) {
 133                         start++;
 134                 }
 135                 if(*start == '\0') {
 136                         /* command has no argument */
 137                         continue;
 138                 }
 139
 140                 *start++ = '\0';
 141
 142                 /* we must have some whitespace to skip */
 143                 while(isspace((unsigned char)*start)) start++;
 144                 opt = start;
 145
 146                 for(i=0; attrs[i].type != ATTR_NONE; i++) {
 147                         void *p;
 148
 149                         if( !userconf && attrs[i].useronly ) {
 150                                 continue;
 151                         }
 152
 153                         if(strcasecmp(cmd, attrs[i].name) != 0) {
 154                                 continue;
 155                         }
 156
 157                         switch(attrs[i].type) {
 158                         case ATTR_BOOL:
 159                                 if((strcasecmp(opt, "on") == 0)
 160                                         || (strcasecmp(opt, "yes") == 0)
 161                                         || (strcasecmp(opt, "true") == 0))
 162                                 {
 163                                         LDAP_BOOL_SET(&gopts, attrs[i].offset);
 164
 165                                 } else {
 166                                         LDAP_BOOL_CLR(&gopts, attrs[i].offset);
 167                                 }
 168
 169                                 break;
 170
 171                         case ATTR_INT:
 172                                 p = &((char *) &gopts)[attrs[i].offset];
 173                                 * (int*) p = atoi(opt);
 174                                 break;
 175
 176                         case ATTR_KV: {
 177                                         const struct ol_keyvalue *kv;
 178
 179                                         for(kv = attrs[i].data;
 180                                                 kv->key != NULL;
 181                                                 kv++) {
 182
 183                                                 if(strcasecmp(opt, kv->key) == 0) {
 184                                                         p = &((char *) &gopts)[attrs[i].offset];
 185                                                         * (int*) p = kv->value;
 186                                                         break;
 187                                                 }
 188                                         }
 189                                 } break;
 190
 191                         case ATTR_STRING:
 192                                 p = &((char *) &gopts)[attrs[i].offset];
 193                                 if (* (char**) p != NULL) LDAP_FREE(* (char**) p);
 194                                 * (char**) p = LDAP_STRDUP(opt);
 195                                 break;
 196                         case ATTR_TLS:
 197 #ifdef HAVE_TLS
 198                                 ldap_pvt_tls_config( &gopts, attrs[i].offset, opt );
 199 #endif
 200                                 break;
 201                         case ATTR_URIS:
 202                                 if (attrs[i].offset == 0) {
 203                                         ldap_set_option( NULL, LDAP_OPT_URI, opt );
 204                                 } else {
 205                                         ldap_set_option( NULL, LDAP_OPT_HOST_NAME, opt );
 206                                 }
 207                                 break;
 208                         }
 209                 }
 210         }
 211
 212         fclose(fp);
 213 }
 214
 215 static void openldap_ldap_init_w_sysconf(const char *file)
 216 {
 217         openldap_ldap_init_w_conf( file, 0 );
 218 }
 219
 220 static void openldap_ldap_init_w_userconf(const char *file)
 221 {
 222         char *home;
 223         char *path;
 224
 225         if (file == NULL) {
 226                 /* no file name */
 227                 return;
 228         }
 229
 230         home = getenv("HOME");
 231
 232         if (home != NULL) {
 233                 path = LDAP_MALLOC(strlen(home) + strlen(file) + 3);
 234         } else {
 235                 path = LDAP_MALLOC(strlen(file) + 3);
 236         }
 237
 238         if(home != NULL && path != NULL) {
 239                 /* we assume UNIX path syntax is used... */
 240
 241                 /* try ~/file */
 242                 sprintf(path, "%s/%s", home, file);
 243                 openldap_ldap_init_w_conf(path, 1);
 244
 245                 /* try ~/.file */
 246                 sprintf(path, "%s/.%s", home, file);
 247                 openldap_ldap_init_w_conf(path, 1);
 248         }
 249
 250         if(path != NULL) {
 251                 LDAP_FREE(path);
 252         }
 253
 254         /* try file */
 255         openldap_ldap_init_w_conf(file, 1);
 256 }
 257
 258 static void openldap_ldap_init_w_env(const char *prefix)
 259 {
 260         char buf[MAX_LDAP_ATTR_LEN+MAX_LDAP_ENV_PREFIX_LEN];
 261         int len;
 262         int i;
 263         void *p;
 264         char *value;
 265
 266         if (prefix == NULL) {
 267                 prefix = LDAP_ENV_PREFIX;
 268         }
 269
 270         strncpy(buf, prefix, MAX_LDAP_ENV_PREFIX_LEN);
 271         buf[MAX_LDAP_ENV_PREFIX_LEN] = '\0';
 272         len = strlen(buf);
 273
 274         for(i=0; attrs[i].type != ATTR_NONE; i++) {
 275                 strcpy(&buf[len], attrs[i].name);
 276                 value = getenv(buf);
 277
 278                 if(value == NULL) {
 279                         continue;
 280                 }
 281
 282                 switch(attrs[i].type) {
 283                 case ATTR_BOOL:
 284                         if((strcasecmp(value, "on") == 0)
 285                                 || (strcasecmp(value, "yes") == 0)
 286                                 || (strcasecmp(value, "true") == 0))
 287                         {
 288                                 LDAP_BOOL_SET(&gopts, attrs[i].offset);
 289
 290                         } else {
 291                                 LDAP_BOOL_CLR(&gopts, attrs[i].offset);
 292                         }
 293                         break;
 294
 295                 case ATTR_INT:
 296                         p = &((char *) &gopts)[attrs[i].offset];
 297                         * (int*) p = atoi(value);
 298                         break;
 299
 300                 case ATTR_KV: {
 301                                 const struct ol_keyvalue *kv;
 302
 303                                 for(kv = attrs[i].data;
 304                                         kv->key != NULL;
 305                                         kv++) {
 306
 307                                         if(strcasecmp(value, kv->key) == 0) {
 308                                                 p = &((char *) &gopts)[attrs[i].offset];
 309                                                 * (int*) p = kv->value;
 310                                                 break;
 311                                         }
 312                                 }
 313                         } break;
 314
 315                 case ATTR_STRING:
 316                         p = &((char *) &gopts)[attrs[i].offset];
 317                         if (* (char**) p != NULL) LDAP_FREE(* (char**) p);
 318                         if (*value == '\0') {
 319                                 * (char**) p = NULL;
 320                         } else {
 321                                 * (char**) p = LDAP_STRDUP(value);
 322                         }
 323                         break;
 324                 case ATTR_TLS:
 325 #ifdef HAVE_TLS
 326                         ldap_pvt_tls_config( &gopts, attrs[i].offset, value );
 327 #endif
 328                         break;
 329                 case ATTR_URIS:
 330                         if (attrs[i].offset == 0) {
 331                                 ldap_set_option( NULL, LDAP_OPT_URI, value );
 332                         } else {
 333                                 ldap_set_option( NULL, LDAP_OPT_HOST_NAME, value );
 334                         }
 335                         break;
 336                 }
 337         }
 338 }
 339
 340 void ldap_int_initialize( void )
 341 {
 342         if ( gopts.ldo_valid == LDAP_INITIALIZED ) {
 343                 return;
 344         }
 345
 346         ldap_int_utils_init();
 347
 348 #ifdef HAVE_TLS
 349         ldap_pvt_tls_init();
 350 #endif
 351
 352 #ifdef HAVE_CYRUS_SASL
 353         ldap_pvt_sasl_init();
 354 #endif
 355
 356         if ( ldap_int_tblsize == 0 )
 357                 ldap_int_ip_init();
 358
 359         gopts.ldo_debug = 0;
 360
 361         gopts.ldo_version =     LDAP_VERSION2;
 362         gopts.ldo_deref =       LDAP_DEREF_NEVER;
 363         gopts.ldo_timelimit = LDAP_NO_LIMIT;
 364         gopts.ldo_sizelimit = LDAP_NO_LIMIT;
 365
 366         gopts.ldo_tm_api = (struct timeval *)NULL;
 367         gopts.ldo_tm_net = (struct timeval *)NULL;
 368
 369         /* ldo_defludp is leaked, we should have an at_exit() handler
 370          * to free this and whatever else needs to cleaned up.
 371          */
 372         ldap_url_parselist(&gopts.ldo_defludp, "ldap://localhost/");
 373         gopts.ldo_defport = LDAP_PORT;
 374
 375         gopts.ldo_refhoplimit = LDAP_DEFAULT_REFHOPLIMIT;
 376
 377         LDAP_BOOL_ZERO(&gopts);
 378
 379         LDAP_BOOL_SET(&gopts, LDAP_BOOL_REFERRALS);
 380
 381 #ifdef HAVE_TLS
 382         gopts.ldo_tls_ctx = NULL;
 383 #endif
 384 #ifdef HAVE_CYRUS_SASL
 385         gopts.ldo_sasl_minssf = 0;
 386         gopts.ldo_sasl_maxssf = INT_MAX;
 387 #endif
 388
 389         gopts.ldo_valid = LDAP_INITIALIZED;
 390
 391         if( getenv("LDAPNOINIT") != NULL ) {
 392                 return;
 393         }
 394
 395         openldap_ldap_init_w_sysconf(LDAP_CONF_FILE);
 396         openldap_ldap_init_w_userconf(LDAP_USERRC_FILE);
 397
 398         {
 399                 char *altfile = getenv(LDAP_ENV_PREFIX "CONF");
 400
 401                 if( altfile != NULL ) {
 402                         openldap_ldap_init_w_sysconf( altfile );
 403                 }
 404         }
 405
 406         {
 407                 char *altfile = getenv(LDAP_ENV_PREFIX "RC");
 408
 409                 if( altfile != NULL ) {
 410                         openldap_ldap_init_w_userconf( altfile );
 411                 }
 412         }
 413
 414         openldap_ldap_init_w_env(NULL);
 415 }