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
  32 struct ol_keyvalue {
  33         const char *            key;
  34         int                     value;
  35 };
  36
  37 static const struct ol_keyvalue deref_kv[] = {
  38         {"never", LDAP_DEREF_NEVER},
  39         {"searching", LDAP_DEREF_SEARCHING},
  40         {"finding", LDAP_DEREF_FINDING},
  41         {"always", LDAP_DEREF_ALWAYS},
  42         {NULL, 0}
  43 };
  44
  45 static const struct ol_attribute {
  46         int                     type;
  47         const char *    name;
  48         const void *    data;
  49         size_t          offset;
  50 } attrs[] = {
  51         {ATTR_KV,               "DEREF",        deref_kv, /* or &deref_kv[0] */
  52                 offsetof(struct ldapoptions, ldo_deref)},
  53         {ATTR_INT,              "SIZELIMIT",    NULL,
  54                 offsetof(struct ldapoptions, ldo_sizelimit)},
  55         {ATTR_INT,              "TIMELIMIT",    NULL,
  56                 offsetof(struct ldapoptions, ldo_timelimit)},
  57         {ATTR_STRING,   "BASE",                 NULL,
  58                 offsetof(struct ldapoptions, ldo_defbase)},
  59         {ATTR_STRING,   "HOST",                 NULL,
  60                 offsetof(struct ldapoptions, ldo_defhost)},
  61         {ATTR_INT,              "PORT",                 NULL,
  62                 offsetof(struct ldapoptions, ldo_defport)},
  63         {ATTR_BOOL,             "REFERRALS",    NULL,   LDAP_BOOL_REFERRALS},
  64         {ATTR_BOOL,             "RESTART",              NULL,   LDAP_BOOL_RESTART},
  65         {ATTR_BOOL,             "DNS",                  NULL,   LDAP_BOOL_DNS},
  66         {ATTR_BOOL,             "TLS",                  NULL,   LDAP_OPT_X_TLS},
  67         {ATTR_TLS,              "TLS_CERT",             NULL,   LDAP_OPT_X_TLS_CERTFILE},
  68         {ATTR_TLS,              "TLS_KEY",              NULL,   LDAP_OPT_X_TLS_KEYFILE},
  69         {ATTR_TLS,              "TLS_CACERT",   NULL,   LDAP_OPT_X_TLS_CACERTFILE},
  70         {ATTR_TLS,              "TLS_CACERTDIR",NULL,   LDAP_OPT_X_TLS_CACERTDIR},
  71         {ATTR_TLS,              "TLS_REQCERT",  NULL,   LDAP_OPT_X_TLS_REQUIRE_CERT},
  72         {ATTR_NONE,             NULL,           NULL,   0}
  73 };
  74
  75 #define MAX_LDAP_ATTR_LEN  sizeof("TLS_CACERTDIR")
  76 #define MAX_LDAP_ENV_PREFIX_LEN 8
  77
  78 static void openldap_ldap_init_w_conf(const char *file)
  79 {
  80         char linebuf[128];
  81         FILE *fp;
  82         int i;
  83         char *cmd, *opt;
  84         char *start, *end;
  85
  86         if (file == NULL) {
  87                 /* no file name */
  88                 return;
  89         }
  90
  91         fp = fopen(file, "r");
  92         if(fp == NULL) {
  93                 /* could not open file */
  94                 return;
  95         }
  96
  97         while((start = fgets(linebuf, sizeof(linebuf), fp)) != NULL) {
  98                 /* skip lines starting with '#' */
  99                 if(*start == '#') continue;
 100
 101                 /* trim leading white space */
 102                 while((*start != '\0') && isspace((unsigned char) *start))
 103                         start++;
 104
 105                 /* anything left? */
 106                 if(*start == '\0') continue;
 107
 108                 /* trim trailing white space */
 109                 end = &start[strlen(start)-1];
 110                 while(isspace((unsigned char)*end)) end--;
 111                 end[1] = '\0';
 112
 113                 /* anything left? */
 114                 if(*start == '\0') continue;
 115
 116
 117                 /* parse the command */
 118                 cmd=start;
 119                 while((*start != '\0') && !isspace((unsigned char)*start)) {
 120                         start++;
 121                 }
 122                 if(*start == '\0') {
 123                         /* command has no argument */
 124                         continue;
 125                 }
 126
 127                 *start++ = '\0';
 128
 129                 /* we must have some non-whitespace to skip */
 130                 while(isspace((unsigned char)*start)) start++;
 131                 opt = start;
 132
 133                 for(i=0; attrs[i].type != ATTR_NONE; i++) {
 134                         void *p;
 135
 136                         if(strcasecmp(cmd, attrs[i].name) != 0) {
 137                                 continue;
 138                         }
 139
 140                         switch(attrs[i].type) {
 141                         case ATTR_BOOL:
 142                                 if((strcasecmp(opt, "on") == 0)
 143                                         || (strcasecmp(opt, "yes") == 0)
 144                                         || (strcasecmp(opt, "true") == 0))
 145                                 {
 146                                         LDAP_BOOL_SET(&gopts, attrs[i].offset);
 147
 148                                 } else {
 149                                         LDAP_BOOL_CLR(&gopts, attrs[i].offset);
 150                                 }
 151
 152                                 break;
 153
 154                         case ATTR_INT:
 155                                 p = &((char *) &gopts)[attrs[i].offset];
 156                                 * (int*) p = atoi(opt);
 157                                 break;
 158
 159                         case ATTR_KV: {
 160                                         const struct ol_keyvalue *kv;
 161
 162                                         for(kv = attrs[i].data;
 163                                                 kv->key != NULL;
 164                                                 kv++) {
 165
 166                                                 if(strcasecmp(opt, kv->key) == 0) {
 167                                                         p = &((char *) &gopts)[attrs[i].offset];
 168                                                         * (int*) p = kv->value;
 169                                                         break;
 170                                                 }
 171                                         }
 172                                 } break;
 173
 174                         case ATTR_STRING:
 175                                 p = &((char *) &gopts)[attrs[i].offset];
 176                                 if (* (char**) p != NULL) LDAP_FREE(* (char**) p);
 177                                 * (char**) p = LDAP_STRDUP(opt);
 178                                 break;
 179                         case ATTR_TLS:
 180 #ifdef HAVE_TLS
 181                                 ldap_pvt_tls_config( &gopts, attrs[i].offset, opt );
 182 #endif
 183                                 break;
 184                         }
 185                 }
 186         }
 187
 188         fclose(fp);
 189 }
 190
 191 static void openldap_ldap_init_w_userconf(const char *file)
 192 {
 193         char *home;
 194         char *path;
 195
 196         if (file == NULL) {
 197                 /* no file name */
 198                 return;
 199         }
 200
 201         home = getenv("HOME");
 202
 203         if (home != NULL) {
 204                 path = LDAP_MALLOC(strlen(home) + strlen(file) + 3);
 205         } else {
 206                 path = LDAP_MALLOC(strlen(file) + 3);
 207         }
 208
 209         if(home != NULL && path != NULL) {
 210                 /* we assume UNIX path syntax is used... */
 211
 212                 /* try ~/file */
 213                 sprintf(path, "%s/%s", home, file);
 214                 openldap_ldap_init_w_conf(path);
 215
 216                 /* try ~/.file */
 217                 sprintf(path, "%s/.%s", home, file);
 218                 openldap_ldap_init_w_conf(path);
 219         }
 220
 221         if(path != NULL) {
 222                 LDAP_FREE(path);
 223         }
 224
 225         /* try file */
 226         openldap_ldap_init_w_conf(file);
 227 }
 228
 229 static void openldap_ldap_init_w_env(const char *prefix)
 230 {
 231         char buf[MAX_LDAP_ATTR_LEN+MAX_LDAP_ENV_PREFIX_LEN];
 232         int len;
 233         int i;
 234         void *p;
 235         char *value;
 236
 237         if (prefix == NULL) {
 238                 prefix = LDAP_ENV_PREFIX;
 239         }
 240
 241         strncpy(buf, prefix, MAX_LDAP_ENV_PREFIX_LEN);
 242         buf[MAX_LDAP_ENV_PREFIX_LEN] = '\0';
 243         len = strlen(buf);
 244
 245         for(i=0; attrs[i].type != ATTR_NONE; i++) {
 246                 strcpy(&buf[len], attrs[i].name);
 247                 value = getenv(buf);
 248
 249                 if(value == NULL) {
 250                         continue;
 251                 }
 252
 253                 switch(attrs[i].type) {
 254                 case ATTR_BOOL:
 255                         if((strcasecmp(value, "on") == 0)
 256                                 || (strcasecmp(value, "yes") == 0)
 257                                 || (strcasecmp(value, "true") == 0))
 258                         {
 259                                 LDAP_BOOL_SET(&gopts, attrs[i].offset);
 260
 261                         } else {
 262                                 LDAP_BOOL_CLR(&gopts, attrs[i].offset);
 263                         }
 264                         break;
 265
 266                 case ATTR_INT:
 267                         p = &((char *) &gopts)[attrs[i].offset];
 268                         * (int*) p = atoi(value);
 269                         break;
 270
 271                 case ATTR_KV: {
 272                                 const struct ol_keyvalue *kv;
 273
 274                                 for(kv = attrs[i].data;
 275                                         kv->key != NULL;
 276                                         kv++) {
 277
 278                                         if(strcasecmp(value, kv->key) == 0) {
 279                                                 p = &((char *) &gopts)[attrs[i].offset];
 280                                                 * (int*) p = kv->value;
 281                                                 break;
 282                                         }
 283                                 }
 284                         } break;
 285
 286                 case ATTR_STRING:
 287                         p = &((char *) &gopts)[attrs[i].offset];
 288                         if (* (char**) p != NULL) LDAP_FREE(* (char**) p);
 289                         if (*value == '\0') {
 290                                 * (char**) p = NULL;
 291                         } else {
 292                                 * (char**) p = LDAP_STRDUP(value);
 293                         }
 294                         break;
 295                 case ATTR_TLS:
 296 #ifdef HAVE_TLS
 297                         ldap_pvt_tls_config( attrs[i].offset, value );
 298 #endif
 299                         break;
 300                 }
 301         }
 302 }
 303
 304 void ldap_int_initialize( void )
 305 {
 306         if ( gopts.ldo_valid == LDAP_INITIALIZED ) {
 307                 return;
 308         }
 309
 310         ldap_int_utils_init();
 311
 312 #ifdef HAVE_TLS
 313         ldap_pvt_tls_init();
 314 #endif
 315
 316         if ( ldap_int_tblsize == 0 )
 317                 ldap_int_ip_init();
 318
 319         gopts.ldo_debug = 0;
 320
 321         gopts.ldo_version =     LDAP_VERSION2;
 322         gopts.ldo_deref =       LDAP_DEREF_NEVER;
 323         gopts.ldo_timelimit = LDAP_NO_LIMIT;
 324         gopts.ldo_sizelimit = LDAP_NO_LIMIT;
 325
 326         gopts.ldo_tm_api = (struct timeval *)NULL;
 327         gopts.ldo_tm_net = (struct timeval *)NULL;
 328
 329         gopts.ldo_defhost = LDAP_STRDUP("localhost");
 330         gopts.ldo_defport = LDAP_PORT;
 331
 332         gopts.ldo_refhoplimit = LDAP_DEFAULT_REFHOPLIMIT;
 333
 334         LDAP_BOOL_ZERO(&gopts);
 335
 336         LDAP_BOOL_SET(&gopts, LDAP_BOOL_REFERRALS);
 337
 338 #ifdef HAVE_TLS
 339         gopts.ldo_tls_ctx = NULL;
 340 #endif
 341
 342         gopts.ldo_valid = LDAP_INITIALIZED;
 343
 344         if( getenv("LDAPNOINIT") != NULL ) {
 345                 return;
 346         }
 347
 348         openldap_ldap_init_w_conf(LDAP_CONF_FILE);
 349         openldap_ldap_init_w_userconf(LDAP_USERRC_FILE);
 350
 351         {
 352                 char *altfile = getenv(LDAP_ENV_PREFIX "CONF");
 353
 354                 if( altfile != NULL ) {
 355                         openldap_ldap_init_w_conf( altfile );
 356                 }
 357         }
 358
 359         {
 360                 char *altfile = getenv(LDAP_ENV_PREFIX "RC");
 361
 362                 if( altfile != NULL ) {
 363                         openldap_ldap_init_w_userconf( altfile );
 364                 }
 365         }
 366
 367         openldap_ldap_init_w_env(NULL);
 368 }