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 2 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, write to the Free Software
  19    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20 */
  21
  22 #include "includes.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
  34         r = strdup(realm);
  35
  36         if (!r || !*r)
  37                 return r;
  38
  39         for (p=r; *p; p++)
  40                 if (strchr(sep, *p))
  41                         numbits++;
  42
  43         len = (numbits+1)*(strlen(field)+1) + strlen(r) + 1;
  44
  45         ret = malloc(len);
  46         if (!ret)
  47                 return NULL;
  48
  49         strlcpy(ret,field, len);
  50         p=strtok(r,sep);
  51         strlcat(ret, p, len);
  52
  53         while ((p=strtok(NULL,sep))) {
  54                 char *s;
  55                 if (reverse)
  56                         asprintf(&s, "%s%s,%s", field, p, ret);
  57                 else
  58                         asprintf(&s, "%s,%s%s", ret, field, p);
  59                 free(ret);
  60                 ret = s;
  61         }
  62
  63         free(r);
  64         return ret;
  65 }
  66
  67 /* return a dn of the form "dc=AA,dc=BB,dc=CC" from a
  68    realm of the form AA.BB.CC
  69    caller must free
  70 */
  71 char *ads_build_dn(const char *realm)
  72 {
  73         return ads_build_path(realm, ".", "dc=", 0);
  74 }
  75
  76
  77 #ifndef LDAP_PORT
  78 #define LDAP_PORT 389
  79 #endif
  80
  81 /*
  82   initialise a ADS_STRUCT, ready for some ads_ ops
  83 */
  84 ADS_STRUCT *ads_init(const char *realm,
  85                      const char *workgroup,
  86                      const char *ldap_server)
  87 {
  88         ADS_STRUCT *ads;
  89
  90         ads = (ADS_STRUCT *)smb_xmalloc(sizeof(*ads));
  91         ZERO_STRUCTP(ads);
  92
  93         ads->server.realm = realm? strdup(realm) : NULL;
  94         ads->server.workgroup = workgroup ? strdup(workgroup) : NULL;
  95         ads->server.ldap_server = ldap_server? strdup(ldap_server) : NULL;
  96
  97         /* we need to know if this is a foreign realm */
  98         if (realm && *realm && strcasecmp(lp_realm(), realm) != 0) {
  99                 ads->server.foreign = 1;
 100         }
 101         if (workgroup && *workgroup && strcasecmp(lp_workgroup(), workgroup) != 0) {
 102                 ads->server.foreign = 1;
 103         }
 104
 105         return ads;
 106 }
 107
 108 /* a simpler ads_init() interface using all defaults */
 109 ADS_STRUCT *ads_init_simple(void)
 110 {
 111         return ads_init(NULL, NULL, NULL);
 112 }
 113
 114 /*
 115   free the memory used by the ADS structure initialized with 'ads_init(...)'
 116 */
 117 void ads_destroy(ADS_STRUCT **ads)
 118 {
 119         if (ads && *ads) {
 120 #if HAVE_LDAP
 121                 if ((*ads)->ld) ldap_unbind((*ads)->ld);
 122 #endif
 123                 SAFE_FREE((*ads)->server.realm);
 124                 SAFE_FREE((*ads)->server.workgroup);
 125                 SAFE_FREE((*ads)->server.ldap_server);
 126                 SAFE_FREE((*ads)->server.ldap_uri);
 127
 128                 SAFE_FREE((*ads)->auth.realm);
 129                 SAFE_FREE((*ads)->auth.password);
 130                 SAFE_FREE((*ads)->auth.user_name);
 131                 SAFE_FREE((*ads)->auth.kdc_server);
 132
 133                 SAFE_FREE((*ads)->config.realm);
 134                 SAFE_FREE((*ads)->config.bind_path);
 135                 SAFE_FREE((*ads)->config.ldap_server_name);
 136
 137                 ZERO_STRUCTP(*ads);
 138                 SAFE_FREE(*ads);
 139         }
 140 }