source3/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 #include "ads.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         char *saveptr;
  34
  35         r = SMB_STRDUP(realm);
  36
  37         if (!r || !*r) {
  38                 return r;
  39         }
  40
  41         for (p=r; *p; p++) {
  42                 if (strchr(sep, *p)) {
  43                         numbits++;
  44                 }
  45         }
  46
  47         len = (numbits+1)*(strlen(field)+1) + strlen(r) + 1;
  48
  49         ret = (char *)SMB_MALLOC(len);
  50         if (!ret) {
  51                 free(r);
  52                 return NULL;
  53         }
  54
  55         if (strlcpy(ret,field, len) >= len) {
  56                 /* Truncate ! */
  57                 free(r);
  58                 return NULL;
  59         }
  60         p=strtok_r(r, sep, &saveptr);
  61         if (p) {
  62                 if (strlcat(ret, p, len) >= len) {
  63                         free(r);
  64                         return NULL;
  65                 }
  66
  67                 while ((p=strtok_r(NULL, sep, &saveptr)) != NULL) {
  68                         int retval;
  69                         char *s = NULL;
  70                         if (reverse)
  71                                 retval = asprintf(&s, "%s%s,%s", field, p, ret);
  72                         else
  73                                 retval = asprintf(&s, "%s,%s%s", ret, field, p);
  74                         free(ret);
  75                         if (retval == -1) {
  76                                 free(r);
  77                                 return NULL;
  78                         }
  79                         ret = SMB_STRDUP(s);
  80                         free(s);
  81                 }
  82         }
  83
  84         free(r);
  85         return ret;
  86 }
  87
  88 /* return a dn of the form "dc=AA,dc=BB,dc=CC" from a
  89    realm of the form AA.BB.CC
  90    caller must free
  91 */
  92 char *ads_build_dn(const char *realm)
  93 {
  94         return ads_build_path(realm, ".", "dc=", 0);
  95 }
  96
  97 /* return a DNS name in the for aa.bb.cc from the DN
  98    "dc=AA,dc=BB,dc=CC".  caller must free
  99 */
 100 char *ads_build_domain(const char *dn)
 101 {
 102         char *dnsdomain = NULL;
 103
 104         /* result should always be shorter than the DN */
 105
 106         if ( (dnsdomain = SMB_STRDUP( dn )) == NULL ) {
 107                 DEBUG(0,("ads_build_domain: malloc() failed!\n"));
 108                 return NULL;
 109         }
 110
 111         if (!strlower_m( dnsdomain )) {
 112                 SAFE_FREE(dnsdomain);
 113                 return NULL;
 114         }
 115
 116         all_string_sub( dnsdomain, "dc=", "", 0);
 117         all_string_sub( dnsdomain, ",", ".", 0 );
 118
 119         return dnsdomain;
 120 }
 121
 122
 123
 124 #ifndef LDAP_PORT
 125 #define LDAP_PORT 389
 126 #endif
 127
 128 /*
 129   initialise a ADS_STRUCT, ready for some ads_ ops
 130 */
 131 ADS_STRUCT *ads_init(const char *realm,
 132                      const char *workgroup,
 133                      const char *ldap_server)
 134 {
 135         ADS_STRUCT *ads;
 136         int wrap_flags;
 137
 138         ads = SMB_XMALLOC_P(ADS_STRUCT);
 139         ZERO_STRUCTP(ads);
 140
 141         ads->server.realm = realm? SMB_STRDUP(realm) : NULL;
 142         ads->server.workgroup = workgroup ? SMB_STRDUP(workgroup) : NULL;
 143         ads->server.ldap_server = ldap_server? SMB_STRDUP(ldap_server) : NULL;
 144
 145         /* we need to know if this is a foreign realm */
 146         if (realm && *realm && !strequal(lp_realm(), realm)) {
 147                 ads->server.foreign = 1;
 148         }
 149         if (workgroup && *workgroup && !strequal(lp_workgroup(), workgroup)) {
 150                 ads->server.foreign = 1;
 151         }
 152
 153         /* the caller will own the memory by default */
 154         ads->is_mine = 1;
 155
 156         wrap_flags = lp_client_ldap_sasl_wrapping();
 157         if (wrap_flags == -1) {
 158                 wrap_flags = 0;
 159         }
 160
 161         ads->auth.flags = wrap_flags;
 162
 163         /* Start with a page size of 1000 when the connection is new,
 164          * we will drop it by half we get a timeout.   */
 165         ads->config.ldap_page_size     = 1000;
 166
 167         return ads;
 168 }
 169
 170 /****************************************************************
 171 ****************************************************************/
 172
 173 bool ads_set_sasl_wrap_flags(ADS_STRUCT *ads, int flags)
 174 {
 175         if (!ads) {
 176                 return false;
 177         }
 178
 179         ads->auth.flags = flags;
 180
 181         return true;
 182 }
 183
 184 /*
 185   free the memory used by the ADS structure initialized with 'ads_init(...)'
 186 */
 187 void ads_destroy(ADS_STRUCT **ads)
 188 {
 189         if (ads && *ads) {
 190                 bool is_mine;
 191
 192                 is_mine = (*ads)->is_mine;
 193 #if HAVE_LDAP
 194                 ads_disconnect(*ads);
 195 #endif
 196                 SAFE_FREE((*ads)->server.realm);
 197                 SAFE_FREE((*ads)->server.workgroup);
 198                 SAFE_FREE((*ads)->server.ldap_server);
 199
 200                 SAFE_FREE((*ads)->auth.realm);
 201                 SAFE_FREE((*ads)->auth.password);
 202                 SAFE_FREE((*ads)->auth.user_name);
 203                 SAFE_FREE((*ads)->auth.kdc_server);
 204                 SAFE_FREE((*ads)->auth.ccache_name);
 205
 206                 SAFE_FREE((*ads)->config.realm);
 207                 SAFE_FREE((*ads)->config.bind_path);
 208                 SAFE_FREE((*ads)->config.ldap_server_name);
 209                 SAFE_FREE((*ads)->config.server_site_name);
 210                 SAFE_FREE((*ads)->config.client_site_name);
 211                 SAFE_FREE((*ads)->config.schema_path);
 212                 SAFE_FREE((*ads)->config.config_path);
 213
 214                 ZERO_STRUCTP(*ads);
 215
 216                 if ( is_mine )
 217                         SAFE_FREE(*ads);
 218         }
 219 }