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 <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 "ldapconfig.h"
  17
  18 struct ldapoptions openldap_ldap_global_options = { LDAP_DEBUG_NONE };
  19
  20 #undef gopts
  21 #define gopts openldap_ldap_global_options
  22
  23 int     openldap_ldap_initialized = 0;
  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
  31 struct ol_keyvalue {
  32         char*           key;
  33         int                     value;
  34 };
  35
  36 static 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 struct ol_attribute {
  45         int                     type;
  46         char*           name;
  47         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",    (void *) LDAP_BOOL_REFERRALS, 0},
  63         {ATTR_BOOL,             "RESTART",              (void *) LDAP_BOOL_RESTART, 0},
  64         {ATTR_BOOL,             "DNS",                  (void *) LDAP_BOOL_DNS, 0},
  65         {ATTR_NONE,             NULL,           NULL,   0}
  66 };
  67
  68 #define MAX_LDAP_ATTR_LEN  sizeof("SIZELIMIT")
  69 #define MAX_LDAP_ENV_PREFIX_LEN 8
  70
  71 static void openldap_ldap_init_w_conf(const char *file)
  72 {
  73         char linebuf[128];
  74         FILE *fp;
  75         int i;
  76         char *cmd, *opt;
  77         char *start, *end;
  78
  79         if (file == NULL) {
  80                 /* no file name */
  81                 return;
  82         }
  83
  84         fp = fopen(file, "r");
  85         if(fp == NULL) {
  86                 /* could not open file */
  87                 return;
  88         }
  89
  90         while((start = fgets(linebuf, sizeof(linebuf), fp)) != NULL) {
  91                 /* skip lines starting with '#' */
  92                 if(*start == '#') continue;
  93
  94                 /* trim leading white space */
  95                 while((*start != '\0') && isspace(*start)) start++;
  96
  97                 /* anything left? */
  98                 if(*start == '\0') continue;
  99
 100                 /* trim trailing white space */
 101                 end = &start[strlen(start)-1];
 102                 while(isspace(*end)) end--;
 103                 end[1] = '\0';
 104
 105                 /* anything left? */
 106                 if(*start == '\0') continue;
 107
 108
 109                 /* parse the command */
 110                 cmd=start;
 111                 while((*start != '\0') && !isspace(*start)) {
 112                         start++;
 113                 }
 114                 if(*start == '\0') {
 115                         /* command has no argument */
 116                         continue;
 117                 }
 118
 119                 *start++ = '\0';
 120
 121                 /* we must have some non-whitespace to skip */
 122                 while(isspace(*start)) start++;
 123                 opt = start;
 124
 125                 for(i=0; attrs[i].type != ATTR_NONE; i++) {
 126                         void *p;
 127
 128                         if(strcasecmp(cmd, attrs[i].name) != 0) {
 129                                 continue;
 130                         }
 131
 132                         p = &((char *) &gopts)[attrs[i].offset];
 133
 134                         switch(attrs[i].type) {
 135                         case ATTR_BOOL:
 136                                 if((strcasecmp(opt, "on") == 0)
 137                                         || (strcasecmp(opt, "yes") == 0)
 138                                         || (strcasecmp(opt, "true") == 0))
 139                                 {
 140                                         LDAP_BOOL_SET(&gopts, (int) attrs[i].data);
 141
 142                                 } else {
 143                                         LDAP_BOOL_CLR(&gopts, (int) attrs[i].data);
 144                                 }
 145
 146                                 break;
 147
 148                         case ATTR_INT:
 149                                 * (int*) p = atoi(opt);
 150                                 break;
 151
 152                         case ATTR_KV: {
 153                                         struct ol_keyvalue *kv;
 154
 155                                         for(kv = (struct ol_keyvalue *) attrs[i].data;
 156                                                 kv->key != NULL;
 157                                                 kv++) {
 158
 159                                                 if(strcasecmp(opt, kv->key) == 0) {
 160                                                         * (int*) p = kv->value;
 161                                                         break;
 162                                                 }
 163                                         }
 164                                 } break;
 165
 166                         case ATTR_STRING:
 167                                 if (* (char**) p != NULL) free(* (char**) p);
 168                                 * (char**) p = strdup(opt);
 169                                 break;
 170                         }
 171                 }
 172         }
 173 }
 174
 175 static void openldap_ldap_init_w_userconf(const char *file)
 176 {
 177         char *home;
 178         char *path;
 179
 180         if (file == NULL) {
 181                 /* no file name */
 182                 return;
 183         }
 184
 185         home = getenv("HOME");
 186
 187         if (home != NULL) {
 188                 path = malloc(strlen(home) + strlen(file) + 3);
 189         } else {
 190                 path = malloc(strlen(file) + 3);
 191         }
 192
 193         if(home != NULL && path != NULL) {
 194                 /* we assume UNIX path syntax is used... */
 195
 196                 /* try ~/file */
 197                 sprintf(path, "%s/%s", home, file);
 198                 openldap_ldap_init_w_conf(path);
 199
 200                 /* try ~/.file */
 201                 sprintf(path, "%s/.%s", home, file);
 202                 openldap_ldap_init_w_conf(path);
 203         }
 204
 205         if(path != NULL) {
 206                 free(path);
 207         }
 208
 209         /* try file */
 210         openldap_ldap_init_w_conf(file);
 211 }
 212
 213 static void openldap_ldap_init_w_env(const char *prefix)
 214 {
 215         char buf[MAX_LDAP_ATTR_LEN+MAX_LDAP_ENV_PREFIX_LEN];
 216         int len;
 217         int i;
 218         void *p;
 219         char *value;
 220
 221         if (prefix == NULL) {
 222                 prefix = DEFAULT_LDAP_ENV_PREFIX;
 223         }
 224
 225         strncpy(buf, prefix, MAX_LDAP_ENV_PREFIX_LEN);
 226         buf[MAX_LDAP_ENV_PREFIX_LEN] = '\0';
 227         len = strlen(buf);
 228
 229         for(i=0; attrs[i].type != ATTR_NONE; i++) {
 230                 strcpy(&buf[len], attrs[i].name);
 231                 value = getenv(buf);
 232
 233                 if(value == NULL) {
 234                         continue;
 235                 }
 236
 237                 p = &((char *) &gopts)[attrs[i].offset];
 238
 239                 switch(attrs[i].type) {
 240                 case ATTR_BOOL:
 241                         if((strcasecmp(value, "on") == 0)
 242                                 || (strcasecmp(value, "yes") == 0)
 243                                 || (strcasecmp(value, "true") == 0))
 244                         {
 245                                 LDAP_BOOL_SET(&gopts, (int) attrs[i].data);
 246
 247                         } else {
 248                                 LDAP_BOOL_CLR(&gopts, (int) attrs[i].data);
 249                         }
 250                         break;
 251
 252                 case ATTR_INT:
 253                         * (int*) p = atoi(value);
 254                         break;
 255
 256                 case ATTR_KV: {
 257                                 struct ol_keyvalue *kv;
 258
 259                                 for(kv = (struct ol_keyvalue *) attrs[i].data;
 260                                         kv->key != NULL;
 261                                         kv++) {
 262
 263                                         if(strcasecmp(value, kv->key) == 0) {
 264                                                 * (int*) p = kv->value;
 265                                                 break;
 266                                         }
 267                                 }
 268                         } break;
 269
 270                 case ATTR_STRING:
 271                         if (* (char**) p != NULL) free(* (char**) p);
 272                         if (*value == '\0') {
 273                                 * (char**) p = NULL;
 274                         } else {
 275                                 * (char**) p = strdup(value);
 276                         }
 277                         break;
 278                 }
 279         }
 280 }
 281
 282 void openldap_ldap_initialize( void )
 283 {
 284         if ( openldap_ldap_initialized ) {
 285                 return;
 286         }
 287
 288         ldap_pvt_init_utils();
 289
 290         gopts.ldo_version =     LDAP_VERSION2;
 291         gopts.ldo_deref =       LDAP_DEREF_NEVER;
 292         gopts.ldo_timelimit = LDAP_NO_LIMIT;
 293         gopts.ldo_sizelimit = LDAP_NO_LIMIT;
 294
 295         gopts.ldo_debug = 0;
 296
 297         gopts.ldo_defhost = strdup("localhost");
 298         gopts.ldo_defport = LDAP_PORT;
 299
 300         gopts.ldo_refhoplimit = LDAP_DEFAULT_REFHOPLIMIT;
 301
 302         LDAP_BOOL_ZERO(&gopts);
 303
 304 #if defined( LDAP_API_FEATURE_X_OPENLDAP_V2_REFERRALS ) || \
 305         LDAP_VERSION_MAX > LDAP_VERSION2
 306         LDAP_BOOL_SET(&gopts, LDAP_BOOL_REFERRALS);
 307 #endif
 308
 309         openldap_ldap_initialized = 1;
 310
 311         if( getenv("LDAPNOINIT") != NULL ) {
 312                 return;
 313         }
 314
 315         openldap_ldap_init_w_conf(DEFAULT_LDAP_CONF_FILE);
 316         openldap_ldap_init_w_userconf(DEFAULT_LDAP_USERRC_FILE);
 317
 318         {
 319                 char *altfile = getenv("LDAPCONF");
 320
 321                 if( altfile != NULL ) {
 322                         openldap_ldap_init_w_conf( altfile );
 323                 }
 324         }
 325
 326         {
 327                 char *altfile = getenv("LDAPRC");
 328
 329                 if( altfile != NULL ) {
 330                         openldap_ldap_init_w_userconf( altfile );
 331                 }
 332         }
 333
 334         openldap_ldap_init_w_env(NULL);
 335 }