source/libads/ads_struct.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    ads (active directory) utility library
   4    Copyright (C) Andrew Tridgell 2001
   5    Copyright (C) Andrew Bartlett 2001
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19 */
  20
  21 #include "includes.h"
  22
  23 /* return a ldap dn path from a string, given separators and field name
  24    caller must free
  25 */
  26 char *ads_build_path(const char *realm, const char *sep, const char *field, int reverse)
  27 {
  28         char *p, *r;
  29         int numbits = 0;
  30         char *ret;
  31         int len;
  32
  33         r = SMB_STRDUP(realm);
  34
  35         if (!r || !*r)
  36                 return r;
  37
  38         for (p=r; *p; p++)
  39                 if (strchr(sep, *p))
  40                         numbits++;
  41
  42         len = (numbits+1)*(strlen(field)+1) + strlen(r) + 1;
  43
  44         ret = (char *)SMB_MALLOC(len);
  45         if (!ret)
  46                 return NULL;
  47
  48         strlcpy(ret,field, len);
  49         p=strtok(r,sep);
  50         if (p) {
  51                 strlcat(ret, p, len);
  52
  53                 while ((p=strtok(NULL,sep))) {
  54                         char *s;
  55                         if (reverse)
  56                                 asprintf(&s, "%s%s,%s", field, p, ret);
  57                         else
  58                                 asprintf(&s, "%s,%s%s", ret, field, p);
  59                         free(ret);
  60                         ret = s;
  61                 }
  62         }
  63
  64         free(r);
  65         return ret;
  66 }
  67
  68 /* return a dn of the form "dc=AA,dc=BB,dc=CC" from a
  69    realm of the form AA.BB.CC
  70    caller must free
  71 */
  72 char *ads_build_dn(const char *realm)
  73 {
  74         return ads_build_path(realm, ".", "dc=", 0);
  75 }
  76
  77 /* return a DNS name in the for aa.bb.cc from the DN
  78    "dc=AA,dc=BB,dc=CC".  caller must free
  79 */
  80 char *ads_build_domain(const char *dn)
  81 {
  82         char *dnsdomain = NULL;
  83
  84         /* result should always be shorter than the DN */
  85
  86         if ( (dnsdomain = SMB_STRDUP( dn )) == NULL ) {
  87                 DEBUG(0,("ads_build_domain: malloc() failed!\n"));
  88                 return NULL;
  89         }
  90
  91         strlower_m( dnsdomain );
  92         all_string_sub( dnsdomain, "dc=", "", 0);
  93         all_string_sub( dnsdomain, ",", ".", 0 );
  94
  95         return dnsdomain;
  96 }
  97
  98
  99
 100 #ifndef LDAP_PORT
 101 #define LDAP_PORT 389
 102 #endif
 103
 104 /*
 105   initialise a ADS_STRUCT, ready for some ads_ ops
 106 */
 107 ADS_STRUCT *ads_init(const char *realm,
 108                      const char *workgroup,
 109                      const char *ldap_server)
 110 {
 111         ADS_STRUCT *ads;
 112
 113         ads = SMB_XMALLOC_P(ADS_STRUCT);
 114         ZERO_STRUCTP(ads);
 115
 116         ads->server.realm = realm? SMB_STRDUP(realm) : NULL;
 117         ads->server.workgroup = workgroup ? SMB_STRDUP(workgroup) : NULL;
 118         ads->server.ldap_server = ldap_server? SMB_STRDUP(ldap_server) : NULL;
 119
 120         /* we need to know if this is a foreign realm */
 121         if (realm && *realm && !strequal(lp_realm(), realm)) {
 122                 ads->server.foreign = 1;
 123         }
 124         if (workgroup && *workgroup && !strequal(lp_workgroup(), workgroup)) {
 125                 ads->server.foreign = 1;
 126         }
 127
 128         /* the caller will own the memory by default */
 129         ads->is_mine = 1;
 130
 131         return ads;
 132 }
 133
 134 /*
 135   free the memory used by the ADS structure initialized with 'ads_init(...)'
 136 */
 137 void ads_destroy(ADS_STRUCT **ads)
 138 {
 139         if (ads && *ads) {
 140                 BOOL is_mine;
 141
 142                 is_mine = (*ads)->is_mine;
 143 #if HAVE_LDAP
 144                 if ((*ads)->ld) {
 145                         ldap_unbind((*ads)->ld);
 146                 }
 147 #endif
 148                 SAFE_FREE((*ads)->server.realm);
 149                 SAFE_FREE((*ads)->server.workgroup);
 150                 SAFE_FREE((*ads)->server.ldap_server);
 151
 152                 SAFE_FREE((*ads)->auth.realm);
 153                 SAFE_FREE((*ads)->auth.password);
 154                 SAFE_FREE((*ads)->auth.user_name);
 155                 SAFE_FREE((*ads)->auth.kdc_server);
 156
 157                 SAFE_FREE((*ads)->config.realm);
 158                 SAFE_FREE((*ads)->config.bind_path);
 159                 SAFE_FREE((*ads)->config.ldap_server_name);
 160                 SAFE_FREE((*ads)->config.server_site_name);
 161                 SAFE_FREE((*ads)->config.client_site_name);
 162
 163                 ZERO_STRUCTP(*ads);
 164
 165                 if ( is_mine )
 166                         SAFE_FREE(*ads);
 167         }
 168 }