git.sur5r.net Git - openldap/blob - libraries/libldap/init.c

   1 #include "portable.h"
   2
   3 #include <stdio.h>
   4 #include <stdlib.h>
   5
   6 #include <ac/socket.h>
   7 #include <ac/string.h>
   8 #include <ac/ctype.h>
   9 #include <ac/time.h>
  10
  11 #include "ldap-int.h"
  12 #include "ldapconfig.h"
  13
  14 struct ldapoptions openldap_ldap_global_options;
  15
  16 #undef gopts
  17 #define gopts openldap_ldap_global_options
  18
  19 int     openldap_ldap_initialized = 0;
  20
  21 #define ATTR_NONE       0
  22 #define ATTR_BOOL       1
  23 #define ATTR_INT        2
  24 #define ATTR_KV         3
  25 #define ATTR_STRING     4
  26
  27 struct ol_keyvalue {
  28         char*           key;
  29         int                     value;
  30 };
  31
  32 static struct ol_keyvalue deref_kv[] = {
  33         {"never", LDAP_DEREF_NEVER},
  34         {"searching", LDAP_DEREF_SEARCHING},
  35         {"finding", LDAP_DEREF_FINDING},
  36         {"always", LDAP_DEREF_ALWAYS},
  37         {NULL, 0}
  38 };
  39
  40 static struct ol_attribute {
  41         int                     type;
  42         char*           name;
  43         void*           data;
  44         size_t          offset;
  45 } attrs[] = {
  46         {ATTR_KV,               "DEREF",        deref_kv, /* or &deref_kv[0] */
  47                 offsetof(struct ldapoptions, ldo_deref)},
  48         {ATTR_INT,              "SIZELIMIT",    NULL,
  49                 offsetof(struct ldapoptions, ldo_sizelimit)},
  50         {ATTR_INT,              "TIMELIMIT",    NULL,
  51                 offsetof(struct ldapoptions, ldo_timelimit)},
  52         {ATTR_STRING,   "BASE",                 NULL,
  53                 offsetof(struct ldapoptions, ldo_defbase)},
  54         {ATTR_STRING,   "HOST",                 NULL,
  55                 offsetof(struct ldapoptions, ldo_defhost)},
  56         {ATTR_INT,              "PORT",                 NULL,
  57                 offsetof(struct ldapoptions, ldo_defport)},
  58         {ATTR_BOOL,             "REFERRALS",    (void *) LDAP_BOOL_REFERRALS, 0},
  59         {ATTR_BOOL,             "RESTART",              (void *) LDAP_BOOL_RESTART, 0},
  60         {ATTR_BOOL,             "DNS",                  (void *) LDAP_BOOL_DNS, 0},
  61         {ATTR_NONE,             NULL,           NULL,   0}
  62 };
  63
  64 #define MAX_LDAP_ATTR_LEN  sizeof("SIZELIMIT")
  65 #define MAX_LDAP_ENV_PREFIX_LEN 8
  66
  67 static void openldap_ldap_init_w_conf(const char *file)
  68 {
  69         char linebuf[128];
  70         FILE *fp;
  71         int i;
  72         char *cmd, *opt;
  73         char *start, *end;
  74
  75         if (file == NULL) {
  76                 /* no file name */
  77                 return;
  78         }
  79
  80         fp = fopen(file, "r");
  81         if(fp == NULL) {
  82                 /* could not open file */
  83                 return;
  84         }
  85
  86         while((start = fgets(linebuf, sizeof(linebuf), fp)) != NULL) {
  87                 /* skip lines starting with '#' */
  88                 if(*start == '#') continue;
  89
  90                 /* trim leading white space */
  91                 while((*start != '\0') && isspace(*start)) start++;
  92
  93                 /* anything left? */
  94                 if(*start == '\0') continue;
  95
  96                 /* trim trailing white space */
  97                 end = &start[strlen(start)-1];
  98                 while(isspace(*end)) end--;
  99                 end[1] = '\0';
 100
 101                 /* anything left? */
 102                 if(*start == '\0') continue;
 103
 104
 105                 /* parse the command */
 106                 cmd=start;
 107                 while((*start != '\0') && !isspace(*start)) {
 108                         start++;
 109                 }
 110                 if(*start == '\0') {
 111                         /* command has no argument */
 112                         continue;
 113                 }
 114
 115                 *start++ = '\0';
 116
 117                 /* we must have some non-whitespace to skip */
 118                 while(isspace(*start)) start++;
 119                 opt = start;
 120
 121                 for(i=0; attrs[i].type != ATTR_NONE; i++) {
 122                         void *p;
 123
 124                         if(strcasecmp(cmd, attrs[i].name) != 0) {
 125                                 continue;
 126                         }
 127
 128                         p = &((char *) &gopts)[attrs[i].offset];
 129
 130                         switch(attrs[i].type) {
 131                         case ATTR_BOOL:
 132                                 if((strcasecmp(opt, "on") == 0)
 133                                         || (strcasecmp(opt, "yes") == 0)
 134                                         || (strcasecmp(opt, "true") == 0))
 135                                 {
 136                                         LDAP_BOOL_SET(&gopts, (int) attrs[i].data);
 137
 138                                 } else {
 139                                         LDAP_BOOL_CLR(&gopts, (int) attrs[i].data);
 140                                 }
 141
 142                                 break;
 143
 144                         case ATTR_INT:
 145                                 * (int*) p = atoi(opt);
 146                                 break;
 147
 148                         case ATTR_KV: {
 149                                         struct ol_keyvalue *kv;
 150
 151                                         for(kv = (struct ol_keyvalue *) attrs[i].data;
 152                                                 kv->key != NULL;
 153                                                 kv++) {
 154
 155                                                 if(strcasecmp(opt, kv->key) == 0) {
 156                                                         * (int*) p = kv->value;
 157                                                         break;
 158                                                 }
 159                                         }
 160                                 } break;
 161
 162                         case ATTR_STRING:
 163                                 if (* (char**) p != NULL) free(* (char**) p);
 164                                 * (char**) p = ldap_strdup(opt);
 165                                 break;
 166                         }
 167                 }
 168         }
 169 }
 170
 171 static void openldap_ldap_init_w_userconf(const char *file)
 172 {
 173         char *home;
 174         char *path;
 175
 176         if (file == NULL) {
 177                 /* no file name */
 178                 return;
 179         }
 180
 181         home = getenv("HOME");
 182
 183         if (home != NULL) {
 184                 path = malloc(strlen(home) + strlen(file) + 3);
 185         } else {
 186                 path = malloc(strlen(file) + 3);
 187         }
 188
 189         if(home != NULL && path != NULL) {
 190                 /* we assume UNIX path syntax is used... */
 191
 192                 /* try ~/file */
 193                 sprintf(path, "%s/%s", home, file);
 194                 openldap_ldap_init_w_conf(path);
 195
 196                 /* try ~/.file */
 197                 sprintf(path, "%s/.%s", home, file);
 198                 openldap_ldap_init_w_conf(path);
 199         }
 200
 201         if(path != NULL) {
 202                 free(path);
 203         }
 204
 205         /* try file */
 206         openldap_ldap_init_w_conf(file);
 207 }
 208
 209 static void openldap_ldap_init_w_env(const char *prefix)
 210 {
 211         char buf[MAX_LDAP_ATTR_LEN+MAX_LDAP_ENV_PREFIX_LEN];
 212         int len;
 213         int i;
 214         void *p;
 215         char *value;
 216
 217         if (prefix == NULL) {
 218                 prefix = DEFAULT_LDAP_ENV_PREFIX;
 219         }
 220
 221         strncpy(buf, prefix, MAX_LDAP_ENV_PREFIX_LEN);
 222         buf[MAX_LDAP_ENV_PREFIX_LEN] = '\0';
 223         len = strlen(buf);
 224
 225         for(i=0; attrs[i].type != ATTR_NONE; i++) {
 226                 strcpy(&buf[len], attrs[i].name);
 227                 value = getenv(buf);
 228
 229                 if(value == NULL) {
 230                         continue;
 231                 }
 232
 233                 p = &((char *) &gopts)[attrs[i].offset];
 234
 235                 switch(attrs[i].type) {
 236                 case ATTR_BOOL:
 237                         if((strcasecmp(value, "on") == 0)
 238                                 || (strcasecmp(value, "yes") == 0)
 239                                 || (strcasecmp(value, "true") == 0))
 240                         {
 241                                 LDAP_BOOL_SET(&gopts, (int) attrs[i].data);
 242
 243                         } else {
 244                                 LDAP_BOOL_CLR(&gopts, (int) attrs[i].data);
 245                         }
 246                         break;
 247
 248                 case ATTR_INT:
 249                         * (int*) p = atoi(value);
 250                         break;
 251
 252                 case ATTR_KV: {
 253                                 struct ol_keyvalue *kv;
 254
 255                                 for(kv = (struct ol_keyvalue *) attrs[i].data;
 256                                         kv->key != NULL;
 257                                         kv++) {
 258
 259                                         if(strcasecmp(value, kv->key) == 0) {
 260                                                 * (int*) p = kv->value;
 261                                                 break;
 262                                         }
 263                                 }
 264                         } break;
 265
 266                 case ATTR_STRING:
 267                         if (* (char**) p != NULL) free(* (char**) p);
 268                         if (*value == '\0') {
 269                                 * (char**) p = NULL;
 270                         } else {
 271                                 * (char**) p = ldap_strdup(value);
 272                         }
 273                         break;
 274                 }
 275         }
 276 }
 277
 278 void openldap_ldap_initialize( void )
 279 {
 280         if ( openldap_ldap_initialized ) {
 281                 return;
 282         }
 283
 284         gopts.ldo_version =     LDAP_VERSION2;
 285         gopts.ldo_deref =       LDAP_DEREF_NEVER;
 286         gopts.ldo_timelimit = LDAP_NO_LIMIT;
 287         gopts.ldo_sizelimit = LDAP_NO_LIMIT;
 288
 289         gopts.ldo_defhost = ldap_strdup("localhost");
 290         gopts.ldo_defport = LDAP_PORT;
 291
 292         gopts.ldo_refhoplimit = LDAP_DEFAULT_REFHOPLIMIT;
 293
 294         LDAP_BOOL_ZERO(&gopts);
 295
 296 #if defined( LDAP_API_FEATURE_X_OPENLDAP_V2_REFERRALS ) || \
 297         LDAP_VERSION_MAX > LDAP_VERSION2
 298         LDAP_BOOL_SET(&gopts, LDAP_BOOL_REFERRALS);
 299 #endif
 300
 301         openldap_ldap_init_w_conf(DEFAULT_LDAP_CONF_FILE);
 302         openldap_ldap_init_w_userconf(DEFAULT_LDAP_USERRC_FILE);
 303
 304         {
 305                 char *altfile = getenv("LDAPRC");
 306
 307                 if( altfile != NULL ) {
 308                         openldap_ldap_init_w_conf( altfile );
 309                 }
 310         }
 311
 312         openldap_ldap_init_w_env(NULL);
 313
 314         openldap_ldap_initialized = 1;
 315 }