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

   1 /*
   2  * Copyright 1998-1999 The OpenLDAP Foundation, All Rights Reserved.
   3  * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
   4  */
   5 #include "portable.h"
   6
   7 #include <stdio.h>
   8 #include <ac/stdlib.h>
   9
  10 #include <ac/socket.h>
  11 #include <ac/string.h>
  12 #include <ac/ctype.h>
  13 #include <ac/time.h>
  14
  15 #include "ldap-int.h"
  16 #include "ldap_defaults.h"
  17
  18 struct ldapoptions ldap_int_global_options =
  19         { LDAP_UNINITIALIZED, LDAP_DEBUG_NONE };
  20
  21 #undef gopts
  22 #define gopts ldap_int_global_options
  23
  24 #define ATTR_NONE       0
  25 #define ATTR_BOOL       1
  26 #define ATTR_INT        2
  27 #define ATTR_KV         3
  28 #define ATTR_STRING     4
  29 #define ATTR_TLS        5
  30
  31 struct ol_keyvalue {
  32         const char *            key;
  33         int                     value;
  34 };
  35
  36 static const struct ol_keyvalue deref_kv[] = {
  37         {"never", LDAP_DEREF_NEVER},
  38         {"searching", LDAP_DEREF_SEARCHING},
  39         {"finding", LDAP_DEREF_FINDING},
  40         {"always", LDAP_DEREF_ALWAYS},
  41         {NULL, 0}
  42 };
  43
  44 static const struct ol_attribute {
  45         int                     type;
  46         const char *    name;
  47         const void *    data;
  48         size_t          offset;
  49 } attrs[] = {
  50         {ATTR_KV,               "DEREF",        deref_kv, /* or &deref_kv[0] */
  51                 offsetof(struct ldapoptions, ldo_deref)},
  52         {ATTR_INT,              "SIZELIMIT",    NULL,
  53                 offsetof(struct ldapoptions, ldo_sizelimit)},
  54         {ATTR_INT,              "TIMELIMIT",    NULL,
  55                 offsetof(struct ldapoptions, ldo_timelimit)},
  56         {ATTR_STRING,   "BASE",                 NULL,
  57                 offsetof(struct ldapoptions, ldo_defbase)},
  58         {ATTR_STRING,   "HOST",                 NULL,
  59                 offsetof(struct ldapoptions, ldo_defhost)},
  60         {ATTR_INT,              "PORT",                 NULL,
  61                 offsetof(struct ldapoptions, ldo_defport)},
  62         {ATTR_BOOL,             "REFERRALS",    NULL,   LDAP_BOOL_REFERRALS},
  63         {ATTR_BOOL,             "RESTART",              NULL,   LDAP_BOOL_RESTART},
  64         {ATTR_BOOL,             "DNS",                  NULL,   LDAP_BOOL_DNS},
  65         {ATTR_BOOL,             "TLS",                  NULL,   LDAP_OPT_X_TLS},
  66         {ATTR_TLS,              "TLS_CERT",             NULL,   LDAP_OPT_X_TLS_CERTFILE},
  67         {ATTR_TLS,              "TLS_KEY",              NULL,   LDAP_OPT_X_TLS_KEYFILE},
  68         {ATTR_TLS,              "TLS_CACERT",   NULL,   LDAP_OPT_X_TLS_CACERTFILE},
  69         {ATTR_TLS,              "TLS_CACERTDIR",NULL,   LDAP_OPT_X_TLS_CACERTDIR},
  70         {ATTR_TLS,              "TLS_REQCERT",  NULL,   LDAP_OPT_X_TLS_REQUIRE_CERT},
  71         {ATTR_NONE,             NULL,           NULL,   0}
  72 };
  73
  74 #define MAX_LDAP_ATTR_LEN  sizeof("TLS_CACERTDIR")
  75 #define MAX_LDAP_ENV_PREFIX_LEN 8
  76
  77 static void openldap_ldap_init_w_conf(const char *file)
  78 {
  79         char linebuf[128];
  80         FILE *fp;
  81         int i;
  82         char *cmd, *opt;
  83         char *start, *end;
  84
  85         if (file == NULL) {
  86                 /* no file name */
  87                 return;
  88         }
  89
  90         fp = fopen(file, "r");
  91         if(fp == NULL) {
  92                 /* could not open file */
  93                 return;
  94         }
  95
  96         while((start = fgets(linebuf, sizeof(linebuf), fp)) != NULL) {
  97                 /* skip lines starting with '#' */
  98                 if(*start == '#') continue;
  99
 100                 /* trim leading white space */
 101                 while((*start != '\0') && isspace((unsigned char) *start))
 102                         start++;
 103
 104                 /* anything left? */
 105                 if(*start == '\0') continue;
 106
 107                 /* trim trailing white space */
 108                 end = &start[strlen(start)-1];
 109                 while(isspace((unsigned char)*end)) end--;
 110                 end[1] = '\0';
 111
 112                 /* anything left? */
 113                 if(*start == '\0') continue;
 114
 115
 116                 /* parse the command */
 117                 cmd=start;
 118                 while((*start != '\0') && !isspace((unsigned char)*start)) {
 119                         start++;
 120                 }
 121                 if(*start == '\0') {
 122                         /* command has no argument */
 123                         continue;
 124                 }
 125
 126                 *start++ = '\0';
 127
 128                 /* we must have some non-whitespace to skip */
 129                 while(isspace((unsigned char)*start)) start++;
 130                 opt = start;
 131
 132                 for(i=0; attrs[i].type != ATTR_NONE; i++) {
 133                         void *p;
 134
 135                         if(strcasecmp(cmd, attrs[i].name) != 0) {
 136                                 continue;
 137                         }
 138
 139                         switch(attrs[i].type) {
 140                         case ATTR_BOOL:
 141                                 if((strcasecmp(opt, "on") == 0)
 142                                         || (strcasecmp(opt, "yes") == 0)
 143                                         || (strcasecmp(opt, "true") == 0))
 144                                 {
 145                                         LDAP_BOOL_SET(&gopts, attrs[i].offset);
 146
 147                                 } else {
 148                                         LDAP_BOOL_CLR(&gopts, attrs[i].offset);
 149                                 }
 150
 151                                 break;
 152
 153                         case ATTR_INT:
 154                                 p = &((char *) &gopts)[attrs[i].offset];
 155                                 * (int*) p = atoi(opt);
 156                                 break;
 157
 158                         case ATTR_KV: {
 159                                         const struct ol_keyvalue *kv;
 160
 161                                         for(kv = attrs[i].data;
 162                                                 kv->key != NULL;
 163                                                 kv++) {
 164
 165                                                 if(strcasecmp(opt, kv->key) == 0) {
 166                                                         p = &((char *) &gopts)[attrs[i].offset];
 167                                                         * (int*) p = kv->value;
 168                                                         break;
 169                                                 }
 170                                         }
 171                                 } break;
 172
 173                         case ATTR_STRING:
 174                                 p = &((char *) &gopts)[attrs[i].offset];
 175                                 if (* (char**) p != NULL) LDAP_FREE(* (char**) p);
 176                                 * (char**) p = LDAP_STRDUP(opt);
 177                                 break;
 178                         case ATTR_TLS:
 179 #ifdef HAVE_TLS
 180                                 ldap_pvt_tls_config( &gopts, attrs[i].offset, opt );
 181 #endif
 182                                 break;
 183                         }
 184                 }
 185         }
 186
 187         fclose(fp);
 188 }
 189
 190 static void openldap_ldap_init_w_userconf(const char *file)
 191 {
 192         char *home;
 193         char *path;
 194
 195         if (file == NULL) {
 196                 /* no file name */
 197                 return;
 198         }
 199
 200         home = getenv("HOME");
 201
 202         if (home != NULL) {
 203                 path = LDAP_MALLOC(strlen(home) + strlen(file) + 3);
 204         } else {
 205                 path = LDAP_MALLOC(strlen(file) + 3);
 206         }
 207
 208         if(home != NULL && path != NULL) {
 209                 /* we assume UNIX path syntax is used... */
 210
 211                 /* try ~/file */
 212                 sprintf(path, "%s/%s", home, file);
 213                 openldap_ldap_init_w_conf(path);
 214
 215                 /* try ~/.file */
 216                 sprintf(path, "%s/.%s", home, file);
 217                 openldap_ldap_init_w_conf(path);
 218         }
 219
 220         if(path != NULL) {
 221                 LDAP_FREE(path);
 222         }
 223
 224         /* try file */
 225         openldap_ldap_init_w_conf(file);
 226 }
 227
 228 static void openldap_ldap_init_w_env(const char *prefix)
 229 {
 230         char buf[MAX_LDAP_ATTR_LEN+MAX_LDAP_ENV_PREFIX_LEN];
 231         int len;
 232         int i;
 233         void *p;
 234         char *value;
 235
 236         if (prefix == NULL) {
 237                 prefix = LDAP_ENV_PREFIX;
 238         }
 239
 240         strncpy(buf, prefix, MAX_LDAP_ENV_PREFIX_LEN);
 241         buf[MAX_LDAP_ENV_PREFIX_LEN] = '\0';
 242         len = strlen(buf);
 243
 244         for(i=0; attrs[i].type != ATTR_NONE; i++) {
 245                 strcpy(&buf[len], attrs[i].name);
 246                 value = getenv(buf);
 247
 248                 if(value == NULL) {
 249                         continue;
 250                 }
 251
 252                 switch(attrs[i].type) {
 253                 case ATTR_BOOL:
 254                         if((strcasecmp(value, "on") == 0)
 255                                 || (strcasecmp(value, "yes") == 0)
 256                                 || (strcasecmp(value, "true") == 0))
 257                         {
 258                                 LDAP_BOOL_SET(&gopts, attrs[i].offset);
 259
 260                         } else {
 261                                 LDAP_BOOL_CLR(&gopts, attrs[i].offset);
 262                         }
 263                         break;
 264
 265                 case ATTR_INT:
 266                         p = &((char *) &gopts)[attrs[i].offset];
 267                         * (int*) p = atoi(value);
 268                         break;
 269
 270                 case ATTR_KV: {
 271                                 const struct ol_keyvalue *kv;
 272
 273                                 for(kv = attrs[i].data;
 274                                         kv->key != NULL;
 275                                         kv++) {
 276
 277                                         if(strcasecmp(value, kv->key) == 0) {
 278                                                 p = &((char *) &gopts)[attrs[i].offset];
 279                                                 * (int*) p = kv->value;
 280                                                 break;
 281                                         }
 282                                 }
 283                         } break;
 284
 285                 case ATTR_STRING:
 286                         p = &((char *) &gopts)[attrs[i].offset];
 287                         if (* (char**) p != NULL) LDAP_FREE(* (char**) p);
 288                         if (*value == '\0') {
 289                                 * (char**) p = NULL;
 290                         } else {
 291                                 * (char**) p = LDAP_STRDUP(value);
 292                         }
 293                         break;
 294                 case ATTR_TLS:
 295 #ifdef HAVE_TLS
 296                         ldap_pvt_tls_config( attrs[i].offset, value );
 297 #endif
 298                         break;
 299                 }
 300         }
 301 }
 302
 303 void ldap_int_initialize( void )
 304 {
 305         if ( gopts.ldo_valid == LDAP_INITIALIZED ) {
 306                 return;
 307         }
 308
 309         ldap_int_utils_init();
 310
 311 #ifdef HAVE_TLS
 312         ldap_pvt_tls_init();
 313 #endif
 314
 315         if ( ldap_int_tblsize == 0 )
 316                 ldap_int_ip_init();
 317
 318         gopts.ldo_debug = 0;
 319
 320         gopts.ldo_version =     LDAP_VERSION2;
 321         gopts.ldo_deref =       LDAP_DEREF_NEVER;
 322         gopts.ldo_timelimit = LDAP_NO_LIMIT;
 323         gopts.ldo_sizelimit = LDAP_NO_LIMIT;
 324
 325         gopts.ldo_tm_api = (struct timeval *)NULL;
 326         gopts.ldo_tm_net = (struct timeval *)NULL;
 327
 328         gopts.ldo_defhost = LDAP_STRDUP("localhost");
 329         gopts.ldo_defport = LDAP_PORT;
 330
 331         gopts.ldo_refhoplimit = LDAP_DEFAULT_REFHOPLIMIT;
 332
 333         LDAP_BOOL_ZERO(&gopts);
 334
 335         LDAP_BOOL_SET(&gopts, LDAP_BOOL_REFERRALS);
 336
 337 #ifdef HAVE_TLS
 338         gopts.ldo_tls_ctx = NULL;
 339 #endif
 340
 341         gopts.ldo_valid = LDAP_INITIALIZED;
 342
 343         if( getenv("LDAPNOINIT") != NULL ) {
 344                 return;
 345         }
 346
 347         openldap_ldap_init_w_conf(LDAP_CONF_FILE);
 348         openldap_ldap_init_w_userconf(LDAP_USERRC_FILE);
 349
 350         {
 351                 char *altfile = getenv(LDAP_ENV_PREFIX "CONF");
 352
 353                 if( altfile != NULL ) {
 354                         openldap_ldap_init_w_conf( altfile );
 355                 }
 356         }
 357
 358         {
 359                 char *altfile = getenv(LDAP_ENV_PREFIX "RC");
 360
 361                 if( altfile != NULL ) {
 362                         openldap_ldap_init_w_userconf( altfile );
 363                 }
 364         }
 365
 366         openldap_ldap_init_w_env(NULL);
 367 }