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         char *saveptr;
  33
  34         r = SMB_STRDUP(realm);
  35
  36         if (!r || !*r) {
  37                 return r;
  38         }
  39
  40         for (p=r; *p; p++) {
  41                 if (strchr(sep, *p)) {
  42                         numbits++;
  43                 }
  44         }
  45
  46         len = (numbits+1)*(strlen(field)+1) + strlen(r) + 1;
  47
  48         ret = (char *)SMB_MALLOC(len);
  49         if (!ret) {
  50                 free(r);
  51                 return NULL;
  52         }
  53
  54         strlcpy(ret,field, len);
  55         p=strtok_r(r, sep, &saveptr);
  56         if (p) {
  57                 strlcat(ret, p, len);
  58
  59                 while ((p=strtok_r(NULL, sep, &saveptr)) != NULL) {
  60                         char *s;
  61                         if (reverse)
  62                                 asprintf(&s, "%s%s,%s", field, p, ret);
  63                         else
  64                                 asprintf(&s, "%s,%s%s", ret, field, p);
  65                         free(ret);
  66                         ret = SMB_STRDUP(s);
  67                         free(s);
  68                 }
  69         }
  70
  71         free(r);
  72         return ret;
  73 }
  74
  75 /* return a dn of the form "dc=AA,dc=BB,dc=CC" from a
  76    realm of the form AA.BB.CC
  77    caller must free
  78 */
  79 char *ads_build_dn(const char *realm)
  80 {
  81         return ads_build_path(realm, ".", "dc=", 0);
  82 }
  83
  84 /* return a DNS name in the for aa.bb.cc from the DN
  85    "dc=AA,dc=BB,dc=CC".  caller must free
  86 */
  87 char *ads_build_domain(const char *dn)
  88 {
  89         char *dnsdomain = NULL;
  90
  91         /* result should always be shorter than the DN */
  92
  93         if ( (dnsdomain = SMB_STRDUP( dn )) == NULL ) {
  94                 DEBUG(0,("ads_build_domain: malloc() failed!\n"));
  95                 return NULL;
  96         }
  97
  98         strlower_m( dnsdomain );
  99         all_string_sub( dnsdomain, "dc=", "", 0);
 100         all_string_sub( dnsdomain, ",", ".", 0 );
 101
 102         return dnsdomain;
 103 }
 104
 105
 106
 107 #ifndef LDAP_PORT
 108 #define LDAP_PORT 389
 109 #endif
 110
 111 /*
 112   initialise a ADS_STRUCT, ready for some ads_ ops
 113 */
 114 ADS_STRUCT *ads_init(const char *realm,
 115                      const char *workgroup,
 116                      const char *ldap_server)
 117 {
 118         ADS_STRUCT *ads;
 119         int wrap_flags;
 120
 121         ads = SMB_XMALLOC_P(ADS_STRUCT);
 122         ZERO_STRUCTP(ads);
 123
 124         ads->server.realm = realm? SMB_STRDUP(realm) : NULL;
 125         ads->server.workgroup = workgroup ? SMB_STRDUP(workgroup) : NULL;
 126         ads->server.ldap_server = ldap_server? SMB_STRDUP(ldap_server) : NULL;
 127
 128         /* we need to know if this is a foreign realm */
 129         if (realm && *realm && !strequal(lp_realm(), realm)) {
 130                 ads->server.foreign = 1;
 131         }
 132         if (workgroup && *workgroup && !strequal(lp_workgroup(), workgroup)) {
 133                 ads->server.foreign = 1;
 134         }
 135
 136         /* the caller will own the memory by default */
 137         ads->is_mine = 1;
 138
 139         wrap_flags = lp_client_ldap_sasl_wrapping();
 140         if (wrap_flags == -1) {
 141                 wrap_flags = 0;
 142         }
 143
 144         ads->auth.flags = wrap_flags;
 145
 146         return ads;
 147 }
 148
 149 /*
 150   free the memory used by the ADS structure initialized with 'ads_init(...)'
 151 */
 152 void ads_destroy(ADS_STRUCT **ads)
 153 {
 154         if (ads && *ads) {
 155                 bool is_mine;
 156
 157                 is_mine = (*ads)->is_mine;
 158 #if HAVE_LDAP
 159                 ads_disconnect(*ads);
 160 #endif
 161                 SAFE_FREE((*ads)->server.realm);
 162                 SAFE_FREE((*ads)->server.workgroup);
 163                 SAFE_FREE((*ads)->server.ldap_server);
 164
 165                 SAFE_FREE((*ads)->auth.realm);
 166                 SAFE_FREE((*ads)->auth.password);
 167                 SAFE_FREE((*ads)->auth.user_name);
 168                 SAFE_FREE((*ads)->auth.kdc_server);
 169
 170                 SAFE_FREE((*ads)->config.realm);
 171                 SAFE_FREE((*ads)->config.bind_path);
 172                 SAFE_FREE((*ads)->config.ldap_server_name);
 173                 SAFE_FREE((*ads)->config.server_site_name);
 174                 SAFE_FREE((*ads)->config.client_site_name);
 175                 SAFE_FREE((*ads)->config.schema_path);
 176                 SAFE_FREE((*ads)->config.config_path);
 177
 178                 ZERO_STRUCTP(*ads);
 179
 180                 if ( is_mine )
 181                         SAFE_FREE(*ads);
 182         }
 183 }