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