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         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_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((unsigned char) *start))
  96                         start++;
  97
  98                 /* anything left? */
  99                 if(*start == '\0') continue;
 100
 101                 /* trim trailing white space */
 102                 end = &start[strlen(start)-1];
 103                 while(isspace((unsigned char)*end)) end--;
 104                 end[1] = '\0';
 105
 106                 /* anything left? */
 107                 if(*start == '\0') continue;
 108
 109
 110                 /* parse the command */
 111                 cmd=start;
 112                 while((*start != '\0') && !isspace((unsigned char)*start)) {
 113                         start++;
 114                 }
 115                 if(*start == '\0') {
 116                         /* command has no argument */
 117                         continue;
 118                 }
 119
 120                 *start++ = '\0';
 121
 122                 /* we must have some non-whitespace to skip */
 123                 while(isspace((unsigned char)*start)) start++;
 124                 opt = start;
 125
 126                 for(i=0; attrs[i].type != ATTR_NONE; i++) {
 127                         void *p;
 128
 129                         if(strcasecmp(cmd, attrs[i].name) != 0) {
 130                                 continue;
 131                         }
 132
 133                         switch(attrs[i].type) {
 134                         case ATTR_BOOL:
 135                                 if((strcasecmp(opt, "on") == 0)
 136                                         || (strcasecmp(opt, "yes") == 0)
 137                                         || (strcasecmp(opt, "true") == 0))
 138                                 {
 139                                         LDAP_BOOL_SET(&gopts, attrs[i].offset);
 140
 141                                 } else {
 142                                         LDAP_BOOL_CLR(&gopts, attrs[i].offset);
 143                                 }
 144
 145                                 break;
 146
 147                         case ATTR_INT:
 148                                 p = &((char *) &gopts)[attrs[i].offset];
 149                                 * (int*) p = atoi(opt);
 150                                 break;
 151
 152                         case ATTR_KV: {
 153                                         const struct ol_keyvalue *kv;
 154
 155                                         for(kv = attrs[i].data;
 156                                                 kv->key != NULL;
 157                                                 kv++) {
 158
 159                                                 if(strcasecmp(opt, kv->key) == 0) {
 160                                                         p = &((char *) &gopts)[attrs[i].offset];
 161                                                         * (int*) p = kv->value;
 162                                                         break;
 163                                                 }
 164                                         }
 165                                 } break;
 166
 167                         case ATTR_STRING:
 168                                 p = &((char *) &gopts)[attrs[i].offset];
 169                                 if (* (char**) p != NULL) free(* (char**) p);
 170                                 * (char**) p = strdup(opt);
 171                                 break;
 172                         }
 173                 }
 174         }
 175
 176         fclose(fp);
 177 }
 178
 179 static void openldap_ldap_init_w_userconf(const char *file)
 180 {
 181         char *home;
 182         char *path;
 183
 184         if (file == NULL) {
 185                 /* no file name */
 186                 return;
 187         }
 188
 189         home = getenv("HOME");
 190
 191         if (home != NULL) {
 192                 path = malloc(strlen(home) + strlen(file) + 3);
 193         } else {
 194                 path = malloc(strlen(file) + 3);
 195         }
 196
 197         if(home != NULL && path != NULL) {
 198                 /* we assume UNIX path syntax is used... */
 199
 200                 /* try ~/file */
 201                 sprintf(path, "%s/%s", home, file);
 202                 openldap_ldap_init_w_conf(path);
 203
 204                 /* try ~/.file */
 205                 sprintf(path, "%s/.%s", home, file);
 206                 openldap_ldap_init_w_conf(path);
 207         }
 208
 209         if(path != NULL) {
 210                 free(path);
 211         }
 212
 213         /* try file */
 214         openldap_ldap_init_w_conf(file);
 215 }
 216
 217 static void openldap_ldap_init_w_env(const char *prefix)
 218 {
 219         char buf[MAX_LDAP_ATTR_LEN+MAX_LDAP_ENV_PREFIX_LEN];
 220         int len;
 221         int i;
 222         void *p;
 223         char *value;
 224
 225         if (prefix == NULL) {
 226                 prefix = DEFAULT_LDAP_ENV_PREFIX;
 227         }
 228
 229         strncpy(buf, prefix, MAX_LDAP_ENV_PREFIX_LEN);
 230         buf[MAX_LDAP_ENV_PREFIX_LEN] = '\0';
 231         len = strlen(buf);
 232
 233         for(i=0; attrs[i].type != ATTR_NONE; i++) {
 234                 strcpy(&buf[len], attrs[i].name);
 235                 value = getenv(buf);
 236
 237                 if(value == NULL) {
 238                         continue;
 239                 }
 240
 241                 switch(attrs[i].type) {
 242                 case ATTR_BOOL:
 243                         if((strcasecmp(value, "on") == 0)
 244                                 || (strcasecmp(value, "yes") == 0)
 245                                 || (strcasecmp(value, "true") == 0))
 246                         {
 247                                 LDAP_BOOL_SET(&gopts, attrs[i].offset);
 248
 249                         } else {
 250                                 LDAP_BOOL_CLR(&gopts, attrs[i].offset);
 251                         }
 252                         break;
 253
 254                 case ATTR_INT:
 255                         p = &((char *) &gopts)[attrs[i].offset];
 256                         * (int*) p = atoi(value);
 257                         break;
 258
 259                 case ATTR_KV: {
 260                                 const struct ol_keyvalue *kv;
 261
 262                                 for(kv = attrs[i].data;
 263                                         kv->key != NULL;
 264                                         kv++) {
 265
 266                                         if(strcasecmp(value, kv->key) == 0) {
 267                                                 p = &((char *) &gopts)[attrs[i].offset];
 268                                                 * (int*) p = kv->value;
 269                                                 break;
 270                                         }
 271                                 }
 272                         } break;
 273
 274                 case ATTR_STRING:
 275                         p = &((char *) &gopts)[attrs[i].offset];
 276                         if (* (char**) p != NULL) free(* (char**) p);
 277                         if (*value == '\0') {
 278                                 * (char**) p = NULL;
 279                         } else {
 280                                 * (char**) p = strdup(value);
 281                         }
 282                         break;
 283                 }
 284         }
 285 }
 286
 287 void openldap_ldap_initialize( void )
 288 {
 289         if ( openldap_ldap_initialized ) {
 290                 return;
 291         }
 292
 293         ldap_int_utils_init();
 294
 295         gopts.ldo_version =     LDAP_VERSION2;
 296         gopts.ldo_deref =       LDAP_DEREF_NEVER;
 297         gopts.ldo_timelimit = LDAP_NO_LIMIT;
 298         gopts.ldo_sizelimit = LDAP_NO_LIMIT;
 299
 300         gopts.ldo_debug = 0;
 301
 302         gopts.ldo_defhost = strdup("localhost");
 303         gopts.ldo_defport = LDAP_PORT;
 304
 305         gopts.ldo_refhoplimit = LDAP_DEFAULT_REFHOPLIMIT;
 306
 307         LDAP_BOOL_ZERO(&gopts);
 308
 309         LDAP_BOOL_SET(&gopts, LDAP_BOOL_REFERRALS);
 310
 311         openldap_ldap_initialized = 1;
 312
 313         if( getenv("LDAPNOINIT") != NULL ) {
 314                 return;
 315         }
 316
 317         openldap_ldap_init_w_conf(DEFAULT_LDAP_CONF_FILE);
 318         openldap_ldap_init_w_userconf(DEFAULT_LDAP_USERRC_FILE);
 319
 320         {
 321                 char *altfile = getenv("LDAPCONF");
 322
 323                 if( altfile != NULL ) {
 324                         openldap_ldap_init_w_conf( altfile );
 325                 }
 326         }
 327
 328         {
 329                 char *altfile = getenv("LDAPRC");
 330
 331                 if( altfile != NULL ) {
 332                         openldap_ldap_init_w_userconf( altfile );
 333                 }
 334         }
 335
 336         openldap_ldap_init_w_env(NULL);
 337 }