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                 free(ret);
  59                 return NULL;
  60         }
  61         p=strtok_r(r, sep, &saveptr);
  62         if (p) {
  63                 if (strlcat(ret, p, len) >= len) {
  64                         free(r);
  65                         free(ret);
  66                         return NULL;
  67                 }
  68
  69                 while ((p=strtok_r(NULL, sep, &saveptr)) != NULL) {
  70                         int retval;
  71                         char *s = NULL;
  72                         if (reverse)
  73                                 retval = asprintf(&s, "%s%s,%s", field, p, ret);
  74                         else
  75                                 retval = asprintf(&s, "%s,%s%s", ret, field, p);
  76                         free(ret);
  77                         if (retval == -1) {
  78                                 free(r);
  79                                 return NULL;
  80                         }
  81                         ret = SMB_STRDUP(s);
  82                         free(s);
  83                 }
  84         }
  85
  86         free(r);
  87         return ret;
  88 }
  89
  90 /* return a dn of the form "dc=AA,dc=BB,dc=CC" from a
  91    realm of the form AA.BB.CC
  92    caller must free
  93 */
  94 char *ads_build_dn(const char *realm)
  95 {
  96         return ads_build_path(realm, ".", "dc=", 0);
  97 }
  98
  99 /* return a DNS name in the for aa.bb.cc from the DN
 100    "dc=AA,dc=BB,dc=CC".  caller must free
 101 */
 102 char *ads_build_domain(const char *dn)
 103 {
 104         char *dnsdomain = NULL;
 105
 106         /* result should always be shorter than the DN */
 107
 108         if ( (dnsdomain = SMB_STRDUP( dn )) == NULL ) {
 109                 DEBUG(0,("ads_build_domain: malloc() failed!\n"));
 110                 return NULL;
 111         }
 112
 113         if (!strlower_m( dnsdomain )) {
 114                 SAFE_FREE(dnsdomain);
 115                 return NULL;
 116         }
 117
 118         all_string_sub( dnsdomain, "dc=", "", 0);
 119         all_string_sub( dnsdomain, ",", ".", 0 );
 120
 121         return dnsdomain;
 122 }
 123
 124
 125
 126 #ifndef LDAP_PORT
 127 #define LDAP_PORT 389
 128 #endif
 129
 130 /*
 131   initialise a ADS_STRUCT, ready for some ads_ ops
 132 */
 133 ADS_STRUCT *ads_init(const char *realm,
 134                      const char *workgroup,
 135                      const char *ldap_server)
 136 {
 137         ADS_STRUCT *ads;
 138         int wrap_flags;
 139
 140         ads = SMB_XMALLOC_P(ADS_STRUCT);
 141         ZERO_STRUCTP(ads);
 142
 143         ads->server.realm = realm? SMB_STRDUP(realm) : NULL;
 144         ads->server.workgroup = workgroup ? SMB_STRDUP(workgroup) : NULL;
 145         ads->server.ldap_server = ldap_server? SMB_STRDUP(ldap_server) : NULL;
 146
 147         /* we need to know if this is a foreign realm */
 148         if (realm && *realm && !strequal(lp_realm(), realm)) {
 149                 ads->server.foreign = 1;
 150         }
 151         if (workgroup && *workgroup && !strequal(lp_workgroup(), workgroup)) {
 152                 ads->server.foreign = 1;
 153         }
 154
 155         /* the caller will own the memory by default */
 156         ads->is_mine = 1;
 157
 158         wrap_flags = lp_client_ldap_sasl_wrapping();
 159         if (wrap_flags == -1) {
 160                 wrap_flags = 0;
 161         }
 162
 163         ads->auth.flags = wrap_flags;
 164
 165         /* Start with a page size of 1000 when the connection is new,
 166          * we will drop it by half we get a timeout.   */
 167         ads->config.ldap_page_size     = 1000;
 168
 169         return ads;
 170 }
 171
 172 /****************************************************************
 173 ****************************************************************/
 174
 175 bool ads_set_sasl_wrap_flags(ADS_STRUCT *ads, int flags)
 176 {
 177         if (!ads) {
 178                 return false;
 179         }
 180
 181         ads->auth.flags = flags;
 182
 183         return true;
 184 }
 185
 186 /*
 187   free the memory used by the ADS structure initialized with 'ads_init(...)'
 188 */
 189 void ads_destroy(ADS_STRUCT **ads)
 190 {
 191         if (ads && *ads) {
 192                 bool is_mine;
 193
 194                 is_mine = (*ads)->is_mine;
 195 #if HAVE_LDAP
 196                 ads_disconnect(*ads);
 197 #endif
 198                 SAFE_FREE((*ads)->server.realm);
 199                 SAFE_FREE((*ads)->server.workgroup);
 200                 SAFE_FREE((*ads)->server.ldap_server);
 201
 202                 SAFE_FREE((*ads)->auth.realm);
 203                 SAFE_FREE((*ads)->auth.password);
 204                 SAFE_FREE((*ads)->auth.user_name);
 205                 SAFE_FREE((*ads)->auth.kdc_server);
 206                 SAFE_FREE((*ads)->auth.ccache_name);
 207
 208                 SAFE_FREE((*ads)->config.realm);
 209                 SAFE_FREE((*ads)->config.bind_path);
 210                 SAFE_FREE((*ads)->config.ldap_server_name);
 211                 SAFE_FREE((*ads)->config.server_site_name);
 212                 SAFE_FREE((*ads)->config.client_site_name);
 213                 SAFE_FREE((*ads)->config.schema_path);
 214                 SAFE_FREE((*ads)->config.config_path);
 215
 216                 ZERO_STRUCTP(*ads);
 217
 218                 if ( is_mine )
 219                         SAFE_FREE(*ads);
 220         }
 221 }