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 #ifdef LDAP_ALLOW_NULL_SEARCH_BASE
 132                         /* Add greg@greg.rim.or.jp
 133                          * It's quick hack for cheap client
 134                          * Some browser offer a NULL base at ldap_search
 135                          */
 136                         if(dnlen == 0) {
 137                                 Debug( LDAP_DEBUG_TRACE,
 138                                         "select_backend: use default backend\n", 0, 0, 0 );
 139                                 return (&backends[i]);
 140                         }
 141 #endif /* LDAP_ALLOW_NULL_SEARCH_BASE */
 142
 143                         len = strlen( backends[i].be_suffix[j] );
 144
 145                         if ( len > dnlen ) {
 146                                 continue;
 147                         }
 148
 149                         if ( strcasecmp( backends[i].be_suffix[j],
 150                             dn + (dnlen - len) ) == 0 ) {
 151                                 return( &backends[i] );
 152                         }
 153                 }
 154         }
 155
 156         /* if no proper suffix could be found then check for aliases */
 157         for ( i = 0; i < nbackends; i++ ) {
 158                 for ( j = 0;
 159                       backends[i].be_suffixAlias != NULL &&
 160                       backends[i].be_suffixAlias[j] != NULL;
 161                       j += 2 )
 162                 {
 163                         len = strlen( backends[i].be_suffixAlias[j] );
 164
 165                         if ( len > dnlen ) {
 166                                 continue;
 167                         }
 168
 169                         if ( strcasecmp( backends[i].be_suffixAlias[j],
 170                             dn + (dnlen - len) ) == 0 ) {
 171                                 return( &backends[i] );
 172                         }
 173                 }
 174         }
 175
 176
 177         return( NULL );
 178 }
 179
 180 int
 181 be_issuffix(
 182     Backend     *be,
 183     char        *suffix
 184 )
 185 {
 186         int     i;
 187
 188         for ( i = 0; be->be_suffix != NULL && be->be_suffix[i] != NULL; i++ ) {
 189                 if ( strcasecmp( be->be_suffix[i], suffix ) == 0 ) {
 190                         return( 1 );
 191                 }
 192         }
 193
 194         return( 0 );
 195 }
 196
 197 int
 198 be_isroot( Backend *be, char *dn )
 199 {
 200         if ( dn == NULL ) {
 201                 return( 0 );
 202         }
 203
 204         return( be->be_rootdn ? strcasecmp( be->be_rootdn, dn ) == 0
 205             : 0 );
 206 }
 207
 208 int
 209 be_isroot_pw( Backend *be, char *dn, struct berval *cred )
 210 {
 211         if ( ! be_isroot( be, dn ) || be->be_rootpw == NULL ) {
 212                 return( 0 );
 213         }
 214
 215         return( strcmp( be->be_rootpw, cred->bv_val ) == 0 );
 216 }
 217
 218 void
 219 be_close( void )
 220 {
 221         int     i;
 222
 223         for ( i = 0; i < nbackends; i++ ) {
 224                 if ( backends[i].be_close != NULL ) {
 225                         (*backends[i].be_close)( &backends[i] );
 226                 }
 227         }
 228 }
 229
 230
 231 void
 232 be_unbind(
 233         Connection   *conn,
 234         Operation    *op
 235 )
 236 {
 237         int     i;
 238
 239         for ( i = 0; i < nbackends; i++ ) {
 240                 if ( backends[i].be_unbind != NULL ) {
 241                         (*backends[i].be_unbind)( &backends[i], conn, op );
 242                 }
 243         }
 244 }
 245
 246 #ifdef SLAPD_ACLGROUPS
 247 int
 248 be_group(
 249         Backend *be,
 250         char    *bdn,
 251         char    *edn,
 252         char    *objectclassValue,
 253         char    *groupattrName
 254 )
 255 {
 256         if (be->be_group)
 257                 return(be->be_group(be, bdn, edn, objectclassValue, groupattrName));
 258         else
 259                 return(1);
 260 }
 261 #endif