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