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                         int retval;
  61                         char *s = NULL;
  62                         if (reverse)
  63                                 retval = asprintf(&s, "%s%s,%s", field, p, ret);
  64                         else
  65                                 retval = asprintf(&s, "%s,%s%s", ret, field, p);
  66                         free(ret);
  67                         if (retval == -1) {
  68                                 free(r);
  69                                 return NULL;
  70                         }
  71                         ret = SMB_STRDUP(s);
  72                         free(s);
  73                 }
  74         }
  75
  76         free(r);
  77         return ret;
  78 }
  79
  80 /* return a dn of the form "dc=AA,dc=BB,dc=CC" from a
  81    realm of the form AA.BB.CC
  82    caller must free
  83 */
  84 char *ads_build_dn(const char *realm)
  85 {
  86         return ads_build_path(realm, ".", "dc=", 0);
  87 }
  88
  89 /* return a DNS name in the for aa.bb.cc from the DN
  90    "dc=AA,dc=BB,dc=CC".  caller must free
  91 */
  92 char *ads_build_domain(const char *dn)
  93 {
  94         char *dnsdomain = NULL;
  95
  96         /* result should always be shorter than the DN */
  97
  98         if ( (dnsdomain = SMB_STRDUP( dn )) == NULL ) {
  99                 DEBUG(0,("ads_build_domain: malloc() failed!\n"));
 100                 return NULL;
 101         }
 102
 103         strlower_m( dnsdomain );
 104         all_string_sub( dnsdomain, "dc=", "", 0);
 105         all_string_sub( dnsdomain, ",", ".", 0 );
 106
 107         return dnsdomain;
 108 }
 109
 110
 111
 112 #ifndef LDAP_PORT
 113 #define LDAP_PORT 389
 114 #endif
 115
 116 /*
 117   initialise a ADS_STRUCT, ready for some ads_ ops
 118 */
 119 ADS_STRUCT *ads_init(const char *realm,
 120                      const char *workgroup,
 121                      const char *ldap_server)
 122 {
 123         ADS_STRUCT *ads;
 124         int wrap_flags;
 125
 126         ads = SMB_XMALLOC_P(ADS_STRUCT);
 127         ZERO_STRUCTP(ads);
 128
 129         ads->server.realm = realm? SMB_STRDUP(realm) : NULL;
 130         ads->server.workgroup = workgroup ? SMB_STRDUP(workgroup) : NULL;
 131         ads->server.ldap_server = ldap_server? SMB_STRDUP(ldap_server) : NULL;
 132
 133         /* we need to know if this is a foreign realm */
 134         if (realm && *realm && !strequal(lp_realm(), realm)) {
 135                 ads->server.foreign = 1;
 136         }
 137         if (workgroup && *workgroup && !strequal(lp_workgroup(), workgroup)) {
 138                 ads->server.foreign = 1;
 139         }
 140
 141         /* the caller will own the memory by default */
 142         ads->is_mine = 1;
 143
 144         wrap_flags = lp_client_ldap_sasl_wrapping();
 145         if (wrap_flags == -1) {
 146                 wrap_flags = 0;
 147         }
 148
 149         ads->auth.flags = wrap_flags;
 150
 151         return ads;
 152 }
 153
 154 /*
 155   free the memory used by the ADS structure initialized with 'ads_init(...)'
 156 */
 157 void ads_destroy(ADS_STRUCT **ads)
 158 {
 159         if (ads && *ads) {
 160                 bool is_mine;
 161
 162                 is_mine = (*ads)->is_mine;
 163 #if HAVE_LDAP
 164                 ads_disconnect(*ads);
 165 #endif
 166                 SAFE_FREE((*ads)->server.realm);
 167                 SAFE_FREE((*ads)->server.workgroup);
 168                 SAFE_FREE((*ads)->server.ldap_server);
 169
 170                 SAFE_FREE((*ads)->auth.realm);
 171                 SAFE_FREE((*ads)->auth.password);
 172                 SAFE_FREE((*ads)->auth.user_name);
 173                 SAFE_FREE((*ads)->auth.kdc_server);
 174
 175                 SAFE_FREE((*ads)->config.realm);
 176                 SAFE_FREE((*ads)->config.bind_path);
 177                 SAFE_FREE((*ads)->config.ldap_server_name);
 178                 SAFE_FREE((*ads)->config.server_site_name);
 179                 SAFE_FREE((*ads)->config.client_site_name);
 180                 SAFE_FREE((*ads)->config.schema_path);
 181                 SAFE_FREE((*ads)->config.config_path);
 182
 183                 ZERO_STRUCTP(*ads);
 184
 185                 if ( is_mine )
 186                         SAFE_FREE(*ads);
 187         }
 188 }