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 2 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, write to the Free Software
  19    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20 */
  21
  22 #include "includes.h"
  23
  24 /* return a ldap dn path from a string, given separators and field name
  25    caller must free
  26 */
  27 char *ads_build_path(const char *realm, const char *sep, const char *field, int reverse)
  28 {
  29         char *p, *r;
  30         int numbits = 0;
  31         char *ret;
  32         int len;
  33
  34         r = SMB_STRDUP(realm);
  35
  36         if (!r || !*r)
  37                 return r;
  38
  39         for (p=r; *p; p++)
  40                 if (strchr(sep, *p))
  41                         numbits++;
  42
  43         len = (numbits+1)*(strlen(field)+1) + strlen(r) + 1;
  44
  45         ret = (char *)SMB_MALLOC(len);
  46         if (!ret)
  47                 return NULL;
  48
  49         strlcpy(ret,field, len);
  50         p=strtok(r,sep);
  51         if (p) {
  52                 strlcat(ret, p, len);
  53
  54                 while ((p=strtok(NULL,sep))) {
  55                         char *s;
  56                         if (reverse)
  57                                 asprintf(&s, "%s%s,%s", field, p, ret);
  58                         else
  59                                 asprintf(&s, "%s,%s%s", ret, field, p);
  60                         free(ret);
  61                         ret = s;
  62                 }
  63         }
  64
  65         free(r);
  66         return ret;
  67 }
  68
  69 /* return a dn of the form "dc=AA,dc=BB,dc=CC" from a
  70    realm of the form AA.BB.CC
  71    caller must free
  72 */
  73 char *ads_build_dn(const char *realm)
  74 {
  75         return ads_build_path(realm, ".", "dc=", 0);
  76 }
  77
  78 /* return a DNS name in the for aa.bb.cc from the DN
  79    "dc=AA,dc=BB,dc=CC".  caller must free
  80 */
  81 char *ads_build_domain(const char *dn)
  82 {
  83         char *dnsdomain = NULL;
  84
  85         /* result should always be shorter than the DN */
  86
  87         if ( (dnsdomain = SMB_STRDUP( dn )) == NULL ) {
  88                 DEBUG(0,("ads_build_domain: malloc() failed!\n"));
  89                 return NULL;
  90         }
  91
  92         strlower_m( dnsdomain );
  93         all_string_sub( dnsdomain, "dc=", "", 0);
  94         all_string_sub( dnsdomain, ",", ".", 0 );
  95
  96         return dnsdomain;
  97 }
  98
  99
 100
 101 #ifndef LDAP_PORT
 102 #define LDAP_PORT 389
 103 #endif
 104
 105 /*
 106   initialise a ADS_STRUCT, ready for some ads_ ops
 107 */
 108 ADS_STRUCT *ads_init(const char *realm,
 109                      const char *workgroup,
 110                      const char *ldap_server)
 111 {
 112         ADS_STRUCT *ads;
 113
 114         ads = SMB_XMALLOC_P(ADS_STRUCT);
 115         ZERO_STRUCTP(ads);
 116
 117         ads->server.realm = realm? SMB_STRDUP(realm) : NULL;
 118         ads->server.workgroup = workgroup ? SMB_STRDUP(workgroup) : NULL;
 119         ads->server.ldap_server = ldap_server? SMB_STRDUP(ldap_server) : NULL;
 120
 121         /* we need to know if this is a foreign realm */
 122         if (realm && *realm && !strequal(lp_realm(), realm)) {
 123                 ads->server.foreign = 1;
 124         }
 125         if (workgroup && *workgroup && !strequal(lp_workgroup(), workgroup)) {
 126                 ads->server.foreign = 1;
 127         }
 128
 129         /* the caller will own the memory by default */
 130         ads->is_mine = 1;
 131
 132         return ads;
 133 }
 134
 135 /*
 136   free the memory used by the ADS structure initialized with 'ads_init(...)'
 137 */
 138 void ads_destroy(ADS_STRUCT **ads)
 139 {
 140         if (ads && *ads) {
 141                 BOOL is_mine;
 142
 143                 is_mine = (*ads)->is_mine;
 144 #if HAVE_LDAP
 145                 if ((*ads)->ld) {
 146                         ldap_unbind((*ads)->ld);
 147                 }
 148 #endif
 149                 SAFE_FREE((*ads)->server.realm);
 150                 SAFE_FREE((*ads)->server.workgroup);
 151                 SAFE_FREE((*ads)->server.ldap_server);
 152
 153                 SAFE_FREE((*ads)->auth.realm);
 154                 SAFE_FREE((*ads)->auth.password);
 155                 SAFE_FREE((*ads)->auth.user_name);
 156                 SAFE_FREE((*ads)->auth.kdc_server);
 157
 158                 SAFE_FREE((*ads)->config.realm);
 159                 SAFE_FREE((*ads)->config.bind_path);
 160                 SAFE_FREE((*ads)->config.ldap_server_name);
 161                 SAFE_FREE((*ads)->config.server_site_name);
 162                 SAFE_FREE((*ads)->config.client_site_name);
 163
 164                 ZERO_STRUCTP(*ads);
 165
 166                 if ( is_mine )
 167                         SAFE_FREE(*ads);
 168         }
 169 }