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         {0, ATTR_STRING,        "BASE",                 NULL,
  60                 offsetof(struct ldapoptions, ldo_defbase)},
  61         {0, ATTR_INT,           "PORT",                 NULL,
  62                 offsetof(struct ldapoptions, ldo_defport)},
  63         /* **** keep this around for backward compatibility */
  64         {0, ATTR_URIS,          "HOST",                 NULL,   1},
  65         /* **** */
  66         {0, ATTR_URIS,          "URI",                  NULL,   0},
  67         {0, ATTR_BOOL,          "REFERRALS",    NULL,   LDAP_BOOL_REFERRALS},
  68         {0, ATTR_BOOL,          "RESTART",              NULL,   LDAP_BOOL_RESTART},
  69         {0, ATTR_BOOL,          "DNS",                  NULL,   LDAP_BOOL_DNS},
  70         {0, ATTR_TLS,           "TLS",                  NULL,   LDAP_OPT_X_TLS},
  71         {0, ATTR_TLS,           "TLS_CERT",             NULL,   LDAP_OPT_X_TLS_CERTFILE},
  72         {0, ATTR_TLS,           "TLS_KEY",              NULL,   LDAP_OPT_X_TLS_KEYFILE},
  73         {0, ATTR_TLS,           "TLS_CACERT",   NULL,   LDAP_OPT_X_TLS_CACERTFILE},
  74         {0, ATTR_TLS,           "TLS_CACERTDIR",NULL,   LDAP_OPT_X_TLS_CACERTDIR},
  75         {0, ATTR_TLS,           "TLS_REQCERT",  NULL,   LDAP_OPT_X_TLS_REQUIRE_CERT},
  76         {0, ATTR_NONE,          NULL,           NULL,   0}
  77 };
  78
  79 #define MAX_LDAP_ATTR_LEN  sizeof("TLS_CACERTDIR")
  80 #define MAX_LDAP_ENV_PREFIX_LEN 8
  81
  82 static void openldap_ldap_init_w_conf(
  83         const char *file, int userconf )
  84 {
  85         char linebuf[128];
  86         FILE *fp;
  87         int i;
  88         char *cmd, *opt;
  89         char *start, *end;
  90
  91         if (file == NULL) {
  92                 /* no file name */
  93                 return;
  94         }
  95
  96         fp = fopen(file, "r");
  97         if(fp == NULL) {
  98                 /* could not open file */
  99                 return;
 100         }
 101
 102         while((start = fgets(linebuf, sizeof(linebuf), fp)) != NULL) {
 103                 /* skip lines starting with '#' */
 104                 if(*start == '#') continue;
 105
 106                 /* trim leading white space */
 107                 while((*start != '\0') && isspace((unsigned char) *start))
 108                         start++;
 109
 110                 /* anything left? */
 111                 if(*start == '\0') continue;
 112
 113                 /* trim trailing white space */
 114                 end = &start[strlen(start)-1];
 115                 while(isspace((unsigned char)*end)) end--;
 116                 end[1] = '\0';
 117
 118                 /* anything left? */
 119                 if(*start == '\0') continue;
 120
 121
 122                 /* parse the command */
 123                 cmd=start;
 124                 while((*start != '\0') && !isspace((unsigned char)*start)) {
 125                         start++;
 126                 }
 127                 if(*start == '\0') {
 128                         /* command has no argument */
 129                         continue;
 130                 }
 131
 132                 *start++ = '\0';
 133
 134                 /* we must have some non-whitespace to skip */
 135                 while(isspace((unsigned char)*start)) start++;
 136                 opt = start;
 137
 138                 for(i=0; attrs[i].type != ATTR_NONE; i++) {
 139                         void *p;
 140
 141                         if( !userconf && !attrs[i].useronly ) {
 142                                 continue;
 143                         }
 144
 145                         if(strcasecmp(cmd, attrs[i].name) != 0) {
 146                                 continue;
 147                         }
 148
 149                         switch(attrs[i].type) {
 150                         case ATTR_BOOL:
 151                                 if((strcasecmp(opt, "on") == 0)
 152                                         || (strcasecmp(opt, "yes") == 0)
 153                                         || (strcasecmp(opt, "true") == 0))
 154                                 {
 155                                         LDAP_BOOL_SET(&gopts, attrs[i].offset);
 156
 157                                 } else {
 158                                         LDAP_BOOL_CLR(&gopts, attrs[i].offset);
 159                                 }
 160
 161                                 break;
 162
 163                         case ATTR_INT:
 164                                 p = &((char *) &gopts)[attrs[i].offset];
 165                                 * (int*) p = atoi(opt);
 166                                 break;
 167
 168                         case ATTR_KV: {
 169                                         const struct ol_keyvalue *kv;
 170
 171                                         for(kv = attrs[i].data;
 172                                                 kv->key != NULL;
 173                                                 kv++) {
 174
 175                                                 if(strcasecmp(opt, kv->key) == 0) {
 176                                                         p = &((char *) &gopts)[attrs[i].offset];
 177                                                         * (int*) p = kv->value;
 178                                                         break;
 179                                                 }
 180                                         }
 181                                 } break;
 182
 183                         case ATTR_STRING:
 184                                 p = &((char *) &gopts)[attrs[i].offset];
 185                                 if (* (char**) p != NULL) LDAP_FREE(* (char**) p);
 186                                 * (char**) p = LDAP_STRDUP(opt);
 187                                 break;
 188                         case ATTR_TLS:
 189 #ifdef HAVE_TLS
 190                                 ldap_pvt_tls_config( &gopts, attrs[i].offset, opt );
 191 #endif
 192                                 break;
 193                         case ATTR_URIS:
 194                                 if (attrs[i].offset == 0) {
 195                                         ldap_set_option( NULL, LDAP_OPT_URI, opt );
 196                                 } else {
 197                                         ldap_set_option( NULL, LDAP_OPT_HOST_NAME, opt );
 198                                 }
 199                                 break;
 200                         }
 201                 }
 202         }
 203
 204         fclose(fp);
 205 }
 206
 207 static void openldap_ldap_init_w_sysconf(const char *file)
 208 {
 209         openldap_ldap_init_w_conf( file, 0 );
 210 }
 211
 212 static void openldap_ldap_init_w_userconf(const char *file)
 213 {
 214         char *home;
 215         char *path;
 216
 217         if (file == NULL) {
 218                 /* no file name */
 219                 return;
 220         }
 221
 222         home = getenv("HOME");
 223
 224         if (home != NULL) {
 225                 path = LDAP_MALLOC(strlen(home) + strlen(file) + 3);
 226         } else {
 227                 path = LDAP_MALLOC(strlen(file) + 3);
 228         }
 229
 230         if(home != NULL && path != NULL) {
 231                 /* we assume UNIX path syntax is used... */
 232
 233                 /* try ~/file */
 234                 sprintf(path, "%s/%s", home, file);
 235                 openldap_ldap_init_w_conf(path, 1);
 236
 237                 /* try ~/.file */
 238                 sprintf(path, "%s/.%s", home, file);
 239                 openldap_ldap_init_w_conf(path, 1);
 240         }
 241
 242         if(path != NULL) {
 243                 LDAP_FREE(path);
 244         }
 245
 246         /* try file */
 247         openldap_ldap_init_w_conf(file, 1);
 248 }
 249
 250 static void openldap_ldap_init_w_env(const char *prefix)
 251 {
 252         char buf[MAX_LDAP_ATTR_LEN+MAX_LDAP_ENV_PREFIX_LEN];
 253         int len;
 254         int i;
 255         void *p;
 256         char *value;
 257
 258         if (prefix == NULL) {
 259                 prefix = LDAP_ENV_PREFIX;
 260         }
 261
 262         strncpy(buf, prefix, MAX_LDAP_ENV_PREFIX_LEN);
 263         buf[MAX_LDAP_ENV_PREFIX_LEN] = '\0';
 264         len = strlen(buf);
 265
 266         for(i=0; attrs[i].type != ATTR_NONE; i++) {
 267                 strcpy(&buf[len], attrs[i].name);
 268                 value = getenv(buf);
 269
 270                 if(value == NULL) {
 271                         continue;
 272                 }
 273
 274                 switch(attrs[i].type) {
 275                 case ATTR_BOOL:
 276                         if((strcasecmp(value, "on") == 0)
 277                                 || (strcasecmp(value, "yes") == 0)
 278                                 || (strcasecmp(value, "true") == 0))
 279                         {
 280                                 LDAP_BOOL_SET(&gopts, attrs[i].offset);
 281
 282                         } else {
 283                                 LDAP_BOOL_CLR(&gopts, attrs[i].offset);
 284                         }
 285                         break;
 286
 287                 case ATTR_INT:
 288                         p = &((char *) &gopts)[attrs[i].offset];
 289                         * (int*) p = atoi(value);
 290                         break;
 291
 292                 case ATTR_KV: {
 293                                 const struct ol_keyvalue *kv;
 294
 295                                 for(kv = attrs[i].data;
 296                                         kv->key != NULL;
 297                                         kv++) {
 298
 299                                         if(strcasecmp(value, kv->key) == 0) {
 300                                                 p = &((char *) &gopts)[attrs[i].offset];
 301                                                 * (int*) p = kv->value;
 302                                                 break;
 303                                         }
 304                                 }
 305                         } break;
 306
 307                 case ATTR_STRING:
 308                         p = &((char *) &gopts)[attrs[i].offset];
 309                         if (* (char**) p != NULL) LDAP_FREE(* (char**) p);
 310                         if (*value == '\0') {
 311                                 * (char**) p = NULL;
 312                         } else {
 313                                 * (char**) p = LDAP_STRDUP(value);
 314                         }
 315                         break;
 316                 case ATTR_TLS:
 317 #ifdef HAVE_TLS
 318                         ldap_pvt_tls_config( &gopts, attrs[i].offset, value );
 319 #endif
 320                         break;
 321                 case ATTR_URIS:
 322                         if (attrs[i].offset == 0) {
 323                                 ldap_set_option( NULL, LDAP_OPT_URI, value );
 324                         } else {
 325                                 ldap_set_option( NULL, LDAP_OPT_HOST_NAME, value );
 326                         }
 327                         break;
 328                 }
 329         }
 330 }
 331
 332 void ldap_int_initialize( void )
 333 {
 334         if ( gopts.ldo_valid == LDAP_INITIALIZED ) {
 335                 return;
 336         }
 337
 338         ldap_int_utils_init();
 339
 340 #ifdef HAVE_TLS
 341         ldap_pvt_tls_init();
 342 #endif
 343
 344         if ( ldap_int_tblsize == 0 )
 345                 ldap_int_ip_init();
 346
 347         gopts.ldo_debug = 0;
 348
 349         gopts.ldo_version =     LDAP_VERSION2;
 350         gopts.ldo_deref =       LDAP_DEREF_NEVER;
 351         gopts.ldo_timelimit = LDAP_NO_LIMIT;
 352         gopts.ldo_sizelimit = LDAP_NO_LIMIT;
 353
 354         gopts.ldo_tm_api = (struct timeval *)NULL;
 355         gopts.ldo_tm_net = (struct timeval *)NULL;
 356
 357         ldap_url_parselist(&gopts.ldo_defludp, "ldap://localhost/");
 358         gopts.ldo_defport = LDAP_PORT;
 359
 360         gopts.ldo_refhoplimit = LDAP_DEFAULT_REFHOPLIMIT;
 361
 362         LDAP_BOOL_ZERO(&gopts);
 363
 364         LDAP_BOOL_SET(&gopts, LDAP_BOOL_REFERRALS);
 365
 366 #ifdef HAVE_TLS
 367         gopts.ldo_tls_ctx = NULL;
 368 #endif
 369
 370         gopts.ldo_valid = LDAP_INITIALIZED;
 371
 372         if( getenv("LDAPNOINIT") != NULL ) {
 373                 return;
 374         }
 375
 376         openldap_ldap_init_w_sysconf(LDAP_CONF_FILE);
 377         openldap_ldap_init_w_userconf(LDAP_USERRC_FILE);
 378
 379         {
 380                 char *altfile = getenv(LDAP_ENV_PREFIX "CONF");
 381
 382                 if( altfile != NULL ) {
 383                         openldap_ldap_init_w_sysconf( altfile );
 384                 }
 385         }
 386
 387         {
 388                 char *altfile = getenv(LDAP_ENV_PREFIX "RC");
 389
 390                 if( altfile != NULL ) {
 391                         openldap_ldap_init_w_userconf( altfile );
 392                 }
 393         }
 394
 395         openldap_ldap_init_w_env(NULL);
 396 }