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         {0, ATTR_NONE,          NULL,           NULL,   0}
  79 };
  80
  81 #define MAX_LDAP_ATTR_LEN  sizeof("TLS_CACERTDIR")
  82 #define MAX_LDAP_ENV_PREFIX_LEN 8
  83
  84 static void openldap_ldap_init_w_conf(
  85         const char *file, int userconf )
  86 {
  87         char linebuf[128];
  88         FILE *fp;
  89         int i;
  90         char *cmd, *opt;
  91         char *start, *end;
  92
  93         if (file == NULL) {
  94                 /* no file name */
  95                 return;
  96         }
  97
  98         fp = fopen(file, "r");
  99         if(fp == NULL) {
 100                 /* could not open file */
 101                 return;
 102         }
 103
 104         while((start = fgets(linebuf, sizeof(linebuf), fp)) != NULL) {
 105                 /* skip lines starting with '#' */
 106                 if(*start == '#') continue;
 107
 108                 /* trim leading white space */
 109                 while((*start != '\0') && isspace((unsigned char) *start))
 110                         start++;
 111
 112                 /* anything left? */
 113                 if(*start == '\0') continue;
 114
 115                 /* trim trailing white space */
 116                 end = &start[strlen(start)-1];
 117                 while(isspace((unsigned char)*end)) end--;
 118                 end[1] = '\0';
 119
 120                 /* anything left? */
 121                 if(*start == '\0') continue;
 122
 123
 124                 /* parse the command */
 125                 cmd=start;
 126                 while((*start != '\0') && !isspace((unsigned char)*start)) {
 127                         start++;
 128                 }
 129                 if(*start == '\0') {
 130                         /* command has no argument */
 131                         continue;
 132                 }
 133
 134                 *start++ = '\0';
 135
 136                 /* we must have some non-whitespace to skip */
 137                 while(isspace((unsigned char)*start)) start++;
 138                 opt = start;
 139
 140                 for(i=0; attrs[i].type != ATTR_NONE; i++) {
 141                         void *p;
 142
 143                         if( !userconf && !attrs[i].useronly ) {
 144                                 continue;
 145                         }
 146
 147                         if(strcasecmp(cmd, attrs[i].name) != 0) {
 148                                 continue;
 149                         }
 150
 151                         switch(attrs[i].type) {
 152                         case ATTR_BOOL:
 153                                 if((strcasecmp(opt, "on") == 0)
 154                                         || (strcasecmp(opt, "yes") == 0)
 155                                         || (strcasecmp(opt, "true") == 0))
 156                                 {
 157                                         LDAP_BOOL_SET(&gopts, attrs[i].offset);
 158
 159                                 } else {
 160                                         LDAP_BOOL_CLR(&gopts, attrs[i].offset);
 161                                 }
 162
 163                                 break;
 164
 165                         case ATTR_INT:
 166                                 p = &((char *) &gopts)[attrs[i].offset];
 167                                 * (int*) p = atoi(opt);
 168                                 break;
 169
 170                         case ATTR_KV: {
 171                                         const struct ol_keyvalue *kv;
 172
 173                                         for(kv = attrs[i].data;
 174                                                 kv->key != NULL;
 175                                                 kv++) {
 176
 177                                                 if(strcasecmp(opt, kv->key) == 0) {
 178                                                         p = &((char *) &gopts)[attrs[i].offset];
 179                                                         * (int*) p = kv->value;
 180                                                         break;
 181                                                 }
 182                                         }
 183                                 } break;
 184
 185                         case ATTR_STRING:
 186                                 p = &((char *) &gopts)[attrs[i].offset];
 187                                 if (* (char**) p != NULL) LDAP_FREE(* (char**) p);
 188                                 * (char**) p = LDAP_STRDUP(opt);
 189                                 break;
 190                         case ATTR_TLS:
 191 #ifdef HAVE_TLS
 192                                 ldap_pvt_tls_config( &gopts, attrs[i].offset, opt );
 193 #endif
 194                                 break;
 195                         case ATTR_URIS:
 196                                 if (attrs[i].offset == 0) {
 197                                         ldap_set_option( NULL, LDAP_OPT_URI, opt );
 198                                 } else {
 199                                         ldap_set_option( NULL, LDAP_OPT_HOST_NAME, opt );
 200                                 }
 201                                 break;
 202                         }
 203                 }
 204         }
 205
 206         fclose(fp);
 207 }
 208
 209 static void openldap_ldap_init_w_sysconf(const char *file)
 210 {
 211         openldap_ldap_init_w_conf( file, 0 );
 212 }
 213
 214 static void openldap_ldap_init_w_userconf(const char *file)
 215 {
 216         char *home;
 217         char *path;
 218
 219         if (file == NULL) {
 220                 /* no file name */
 221                 return;
 222         }
 223
 224         home = getenv("HOME");
 225
 226         if (home != NULL) {
 227                 path = LDAP_MALLOC(strlen(home) + strlen(file) + 3);
 228         } else {
 229                 path = LDAP_MALLOC(strlen(file) + 3);
 230         }
 231
 232         if(home != NULL && path != NULL) {
 233                 /* we assume UNIX path syntax is used... */
 234
 235                 /* try ~/file */
 236                 sprintf(path, "%s/%s", home, file);
 237                 openldap_ldap_init_w_conf(path, 1);
 238
 239                 /* try ~/.file */
 240                 sprintf(path, "%s/.%s", home, file);
 241                 openldap_ldap_init_w_conf(path, 1);
 242         }
 243
 244         if(path != NULL) {
 245                 LDAP_FREE(path);
 246         }
 247
 248         /* try file */
 249         openldap_ldap_init_w_conf(file, 1);
 250 }
 251
 252 static void openldap_ldap_init_w_env(const char *prefix)
 253 {
 254         char buf[MAX_LDAP_ATTR_LEN+MAX_LDAP_ENV_PREFIX_LEN];
 255         int len;
 256         int i;
 257         void *p;
 258         char *value;
 259
 260         if (prefix == NULL) {
 261                 prefix = LDAP_ENV_PREFIX;
 262         }
 263
 264         strncpy(buf, prefix, MAX_LDAP_ENV_PREFIX_LEN);
 265         buf[MAX_LDAP_ENV_PREFIX_LEN] = '\0';
 266         len = strlen(buf);
 267
 268         for(i=0; attrs[i].type != ATTR_NONE; i++) {
 269                 strcpy(&buf[len], attrs[i].name);
 270                 value = getenv(buf);
 271
 272                 if(value == NULL) {
 273                         continue;
 274                 }
 275
 276                 switch(attrs[i].type) {
 277                 case ATTR_BOOL:
 278                         if((strcasecmp(value, "on") == 0)
 279                                 || (strcasecmp(value, "yes") == 0)
 280                                 || (strcasecmp(value, "true") == 0))
 281                         {
 282                                 LDAP_BOOL_SET(&gopts, attrs[i].offset);
 283
 284                         } else {
 285                                 LDAP_BOOL_CLR(&gopts, attrs[i].offset);
 286                         }
 287                         break;
 288
 289                 case ATTR_INT:
 290                         p = &((char *) &gopts)[attrs[i].offset];
 291                         * (int*) p = atoi(value);
 292                         break;
 293
 294                 case ATTR_KV: {
 295                                 const struct ol_keyvalue *kv;
 296
 297                                 for(kv = attrs[i].data;
 298                                         kv->key != NULL;
 299                                         kv++) {
 300
 301                                         if(strcasecmp(value, kv->key) == 0) {
 302                                                 p = &((char *) &gopts)[attrs[i].offset];
 303                                                 * (int*) p = kv->value;
 304                                                 break;
 305                                         }
 306                                 }
 307                         } break;
 308
 309                 case ATTR_STRING:
 310                         p = &((char *) &gopts)[attrs[i].offset];
 311                         if (* (char**) p != NULL) LDAP_FREE(* (char**) p);
 312                         if (*value == '\0') {
 313                                 * (char**) p = NULL;
 314                         } else {
 315                                 * (char**) p = LDAP_STRDUP(value);
 316                         }
 317                         break;
 318                 case ATTR_TLS:
 319 #ifdef HAVE_TLS
 320                         ldap_pvt_tls_config( &gopts, attrs[i].offset, value );
 321 #endif
 322                         break;
 323                 case ATTR_URIS:
 324                         if (attrs[i].offset == 0) {
 325                                 ldap_set_option( NULL, LDAP_OPT_URI, value );
 326                         } else {
 327                                 ldap_set_option( NULL, LDAP_OPT_HOST_NAME, value );
 328                         }
 329                         break;
 330                 }
 331         }
 332 }
 333
 334 void ldap_int_initialize( void )
 335 {
 336         if ( gopts.ldo_valid == LDAP_INITIALIZED ) {
 337                 return;
 338         }
 339
 340         ldap_int_utils_init();
 341
 342 #ifdef HAVE_TLS
 343         ldap_pvt_tls_init();
 344 #endif
 345
 346 #ifdef HAVE_CYRUS_SASL
 347         ldap_pvt_sasl_init();
 348 #endif
 349
 350         if ( ldap_int_tblsize == 0 )
 351                 ldap_int_ip_init();
 352
 353         gopts.ldo_debug = 0;
 354
 355         gopts.ldo_version =     LDAP_VERSION2;
 356         gopts.ldo_deref =       LDAP_DEREF_NEVER;
 357         gopts.ldo_timelimit = LDAP_NO_LIMIT;
 358         gopts.ldo_sizelimit = LDAP_NO_LIMIT;
 359
 360         gopts.ldo_tm_api = (struct timeval *)NULL;
 361         gopts.ldo_tm_net = (struct timeval *)NULL;
 362
 363         ldap_url_parselist(&gopts.ldo_defludp, "ldap://localhost/");
 364         gopts.ldo_defport = LDAP_PORT;
 365
 366         gopts.ldo_refhoplimit = LDAP_DEFAULT_REFHOPLIMIT;
 367
 368         LDAP_BOOL_ZERO(&gopts);
 369
 370         LDAP_BOOL_SET(&gopts, LDAP_BOOL_REFERRALS);
 371
 372 #ifdef HAVE_TLS
 373         gopts.ldo_tls_ctx = NULL;
 374 #endif
 375
 376         gopts.ldo_valid = LDAP_INITIALIZED;
 377
 378         if( getenv("LDAPNOINIT") != NULL ) {
 379                 return;
 380         }
 381
 382         openldap_ldap_init_w_sysconf(LDAP_CONF_FILE);
 383         openldap_ldap_init_w_userconf(LDAP_USERRC_FILE);
 384
 385         {
 386                 char *altfile = getenv(LDAP_ENV_PREFIX "CONF");
 387
 388                 if( altfile != NULL ) {
 389                         openldap_ldap_init_w_sysconf( altfile );
 390                 }
 391         }
 392
 393         {
 394                 char *altfile = getenv(LDAP_ENV_PREFIX "RC");
 395
 396                 if( altfile != NULL ) {
 397                         openldap_ldap_init_w_userconf( altfile );
 398                 }
 399         }
 400
 401         openldap_ldap_init_w_env(NULL);
 402 }