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