git.sur5r.net Git - openldap/blob - servers/slapd/backend.c

   1 /* backend.c - routines for dealing with back-end databases */
   2
   3
   4 #include "portable.h"
   5
   6 #include <stdio.h>
   7
   8 #include <ac/string.h>
   9 #include <ac/socket.h>
  10
  11 #include <sys/stat.h>
  12
  13 #include "slap.h"
  14
  15
  16 #define BACKEND_GRAB_SIZE       10
  17
  18 int             nbackends;
  19 Backend         *backends;
  20 static int      maxbackends;
  21
  22 Backend *
  23 new_backend(
  24     char        *type
  25 )
  26 {
  27         Backend *be;
  28         int     foundit;
  29
  30         if ( nbackends == maxbackends ) {
  31                 maxbackends += BACKEND_GRAB_SIZE;
  32                 backends = (Backend *) ch_realloc( (char *) backends,
  33                     maxbackends * sizeof(Backend) );
  34                 memset( &backends[nbackends], '\0', BACKEND_GRAB_SIZE *
  35                     sizeof(Backend) );
  36         }
  37
  38         be = &backends[nbackends++];
  39         be->be_sizelimit = defsize;
  40         be->be_timelimit = deftime;
  41         foundit = 0;
  42
  43 #ifdef SLAPD_LDBM
  44         if ( strcasecmp( type, "ldbm" ) == 0 ) {
  45                 be->be_bind = ldbm_back_bind;
  46                 be->be_unbind = ldbm_back_unbind;
  47                 be->be_search = ldbm_back_search;
  48                 be->be_compare = ldbm_back_compare;
  49                 be->be_modify = ldbm_back_modify;
  50                 be->be_modrdn = ldbm_back_modrdn;
  51                 be->be_add = ldbm_back_add;
  52                 be->be_delete = ldbm_back_delete;
  53                 be->be_abandon = ldbm_back_abandon;
  54                 be->be_config = ldbm_back_config;
  55                 be->be_init = ldbm_back_init;
  56                 be->be_close = ldbm_back_close;
  57 #ifdef SLAPD_ACLGROUPS
  58                 be->be_group = ldbm_back_group;
  59 #endif
  60                 be->be_type = "ldbm";
  61                 foundit = 1;
  62         }
  63 #endif
  64
  65 #ifdef SLAPD_PASSWD
  66         if ( strcasecmp( type, "passwd" ) == 0 ) {
  67                 be->be_bind = NULL;
  68                 be->be_unbind = NULL;
  69                 be->be_search = passwd_back_search;
  70                 be->be_compare = NULL;
  71                 be->be_modify = NULL;
  72                 be->be_modrdn = NULL;
  73                 be->be_add = NULL;
  74                 be->be_delete = NULL;
  75                 be->be_abandon = NULL;
  76                 be->be_config = passwd_back_config;
  77                 be->be_init = NULL;
  78                 be->be_close = NULL;
  79 #ifdef SLAPD_ACLGROUPS
  80                 be->be_group = NULL;
  81 #endif
  82                 be->be_type = "passwd";
  83                 foundit = 1;
  84         }
  85 #endif
  86
  87 #ifdef SLAPD_SHELL
  88         if ( strcasecmp( type, "shell" ) == 0 ) {
  89                 be->be_bind = shell_back_bind;
  90                 be->be_unbind = shell_back_unbind;
  91                 be->be_search = shell_back_search;
  92                 be->be_compare = shell_back_compare;
  93                 be->be_modify = shell_back_modify;
  94                 be->be_modrdn = shell_back_modrdn;
  95                 be->be_add = shell_back_add;
  96                 be->be_delete = shell_back_delete;
  97                 be->be_abandon = shell_back_abandon;
  98                 be->be_config = shell_back_config;
  99                 be->be_init = shell_back_init;
 100                 be->be_close = NULL;
 101 #ifdef SLAPD_ACLGROUPS
 102                 be->be_group = NULL;
 103 #endif
 104                 be->be_type = "shell";
 105                 foundit = 1;
 106         }
 107 #endif
 108
 109         if ( be->be_init != NULL ) {
 110                 (*be->be_init)( be );
 111         }
 112
 113         if ( foundit == 0 ) {
 114                 fprintf( stderr, "Unrecognized database type (%s)\n", type );
 115                 exit( 1 );
 116         }
 117
 118         return( be );
 119 }
 120
 121 Backend *
 122 select_backend( char * dn )
 123 {
 124         int     i, j, len, dnlen;
 125
 126         dnlen = strlen( dn );
 127         for ( i = 0; i < nbackends; i++ ) {
 128                 for ( j = 0; backends[i].be_suffix != NULL &&
 129                     backends[i].be_suffix[j] != NULL; j++ )
 130                 {
 131                         len = strlen( backends[i].be_suffix[j] );
 132
 133                         if ( len > dnlen ) {
 134                                 continue;
 135                         }
 136
 137                         if ( strcmp( backends[i].be_suffix[j],
 138                             dn + (dnlen - len) ) == 0 ) {
 139                                 return( &backends[i] );
 140                         }
 141                 }
 142         }
 143
 144         /* if no proper suffix could be found then check for aliases */
 145         for ( i = 0; i < nbackends; i++ ) {
 146                 for ( j = 0;
 147                       backends[i].be_suffixAlias != NULL &&
 148                       backends[i].be_suffixAlias[j] != NULL;
 149                       j += 2 )
 150                 {
 151                         len = strlen( backends[i].be_suffixAlias[j] );
 152
 153                         if ( len > dnlen ) {
 154                                 continue;
 155                         }
 156
 157                         if ( strcmp( backends[i].be_suffixAlias[j],
 158                             dn + (dnlen - len) ) == 0 ) {
 159                                 return( &backends[i] );
 160                         }
 161                 }
 162         }
 163
 164 #ifdef LDAP_ALLOW_NULL_SEARCH_BASE
 165         /* Add greg@greg.rim.or.jp
 166          * It's quick hack for cheap client
 167          * Some browser offer a NULL base at ldap_search
 168          *
 169          * Should only be used as a last resort. -Kdz
 170          */
 171         if(dnlen == 0) {
 172                 Debug( LDAP_DEBUG_TRACE,
 173                         "select_backend: use default backend\n", 0, 0, 0 );
 174                 return( &backends[0] );
 175         }
 176 #endif /* LDAP_ALLOW_NULL_SEARCH_BASE */
 177
 178         return( NULL );
 179 }
 180
 181 int
 182 be_issuffix(
 183     Backend     *be,
 184     char        *suffix
 185 )
 186 {
 187         int     i;
 188
 189         for ( i = 0; be->be_suffix != NULL && be->be_suffix[i] != NULL; i++ ) {
 190                 if ( strcmp( be->be_suffix[i], suffix ) == 0 ) {
 191                         return( 1 );
 192                 }
 193         }
 194
 195         return( 0 );
 196 }
 197
 198 int
 199 be_isroot( Backend *be, char *ndn )
 200 {
 201         int rc;
 202
 203         if ( ndn == NULL || be->be_root_ndn == NULL ) {
 204                 return( 0 );
 205         }
 206
 207         rc = strcmp( be->be_root_ndn, ndn ) ? 0 : 1;
 208
 209         return(rc);
 210 }
 211
 212 char *
 213 be_root_dn( Backend *be )
 214 {
 215         int rc;
 216
 217         if ( be->be_root_dn == NULL ) {
 218                 return( "" );
 219         }
 220
 221         return be->be_root_dn;
 222 }
 223
 224 int
 225 be_isroot_pw( Backend *be, char *ndn, struct berval *cred )
 226 {
 227         int result;
 228
 229         if ( ! be_isroot( be, ndn ) ) {
 230                 return( 0 );
 231         }
 232
 233 #ifdef SLAPD_CRYPT
 234         ldap_pvt_thread_mutex_lock( &crypt_mutex );
 235 #endif
 236
 237         result = lutil_passwd( cred->bv_val, be->be_root_pw );
 238
 239 #ifdef SLAPD_CRYPT
 240         ldap_pvt_thread_mutex_unlock( &crypt_mutex );
 241 #endif
 242
 243         return result == 0;
 244 }
 245
 246 void
 247 be_close( void )
 248 {
 249         int     i;
 250
 251         for ( i = 0; i < nbackends; i++ ) {
 252                 if ( backends[i].be_close != NULL ) {
 253                         (*backends[i].be_close)( &backends[i] );
 254                 }
 255         }
 256 }
 257
 258
 259 void
 260 be_unbind(
 261         Connection   *conn,
 262         Operation    *op
 263 )
 264 {
 265         int     i;
 266
 267         for ( i = 0; i < nbackends; i++ ) {
 268                 if ( backends[i].be_unbind != NULL ) {
 269                         (*backends[i].be_unbind)( &backends[i], conn, op );
 270                 }
 271         }
 272 }
 273
 274 #ifdef SLAPD_ACLGROUPS
 275 int
 276 be_group(
 277         Backend *be,
 278         Entry   *target,
 279         char    *gr_ndn,
 280         char    *op_ndn,
 281         char    *objectclassValue,
 282         char    *groupattrName
 283 )
 284 {
 285         if (be->be_group)
 286                 return( be->be_group(be, target, gr_ndn, op_ndn,
 287                         objectclassValue, groupattrName) );
 288         else
 289                 return(1);
 290 }
 291 #endif