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/*
Unix SMB/CIFS implementation.
ads (active directory) utility library
Copyright (C) Andrew Tridgell 2001
Copyright (C) Andrew Bartlett 2001
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
#include "ads.h"
/* return a ldap dn path from a string, given separators and field name
caller must free
*/
ADS_STATUS ads_build_path(const char *realm,
const char *sep,
const char *field,
int reverse,
char **_path)
{
char *p, *r;
int numbits = 0;
char *ret;
int len;
char *saveptr;
*_path = NULL;
r = SMB_STRDUP(realm);
if (r == NULL) {
return ADS_ERROR_NT(NT_STATUS_NO_MEMORY);
}
for (p=r; *p; p++) {
if (strchr(sep, *p)) {
numbits++;
}
}
len = (numbits+1)*(strlen(field)+1) + strlen(r) + 1;
ret = (char *)SMB_MALLOC(len);
if (!ret) {
free(r);
return ADS_ERROR_NT(NT_STATUS_NO_MEMORY);
}
if (strlcpy(ret,field, len) >= len) {
/* Truncate ! */
free(r);
free(ret);
return ADS_ERROR_NT(NT_STATUS_NO_MEMORY);
}
p=strtok_r(r, sep, &saveptr);
if (p) {
if (strlcat(ret, p, len) >= len) {
free(r);
free(ret);
return ADS_ERROR_NT(NT_STATUS_NO_MEMORY);
}
while ((p=strtok_r(NULL, sep, &saveptr)) != NULL) {
int retval;
char *s = NULL;
if (reverse)
retval = asprintf(&s, "%s%s,%s", field, p, ret);
else
retval = asprintf(&s, "%s,%s%s", ret, field, p);
free(ret);
if (retval == -1) {
free(r);
return ADS_ERROR_NT(NT_STATUS_NO_MEMORY);
}
ret = SMB_STRDUP(s);
free(s);
}
}
free(r);
*_path = ret;
return ADS_ERROR_NT(NT_STATUS_OK);
}
/* return a dn of the form "dc=AA,dc=BB,dc=CC" from a
realm of the form AA.BB.CC
caller must free
*/
ADS_STATUS ads_build_dn(const char *realm, TALLOC_CTX *mem_ctx, char **_dn)
{
ADS_STATUS status;
char *dn = NULL;
status = ads_build_path(realm, ".", "dc=", 0, &dn);
if (!ADS_ERR_OK(status)) {
SAFE_FREE(dn);
return status;
}
*_dn = talloc_strdup(mem_ctx, dn);
SAFE_FREE(dn);
if (*_dn == NULL) {
return ADS_ERROR_NT(NT_STATUS_NO_MEMORY);
}
return ADS_ERROR_NT(NT_STATUS_OK);
}
/* return a DNS name in the for aa.bb.cc from the DN
"dc=AA,dc=BB,dc=CC". caller must free
*/
char *ads_build_domain(const char *dn)
{
char *dnsdomain = NULL;
/* result should always be shorter than the DN */
if ( (dnsdomain = SMB_STRDUP( dn )) == NULL ) {
DEBUG(0,("ads_build_domain: malloc() failed!\n"));
return NULL;
}
if (!strlower_m( dnsdomain )) {
SAFE_FREE(dnsdomain);
return NULL;
}
all_string_sub( dnsdomain, "dc=", "", 0);
all_string_sub( dnsdomain, ",", ".", 0 );
return dnsdomain;
}
static int ads_destructor(ADS_STRUCT *ads)
{
#ifdef HAVE_LDAP
ads_disconnect(ads);
#endif
return 0;
}
/*
initialise a ADS_STRUCT, ready for some ads_ ops
*/
ADS_STRUCT *ads_init(TALLOC_CTX *mem_ctx,
const char *realm,
const char *workgroup,
const char *ldap_server,
enum ads_sasl_state_e sasl_state)
{
ADS_STRUCT *ads = NULL;
int wrap_flags;
ads = talloc_zero(mem_ctx, ADS_STRUCT);
if (ads == NULL) {
return NULL;
}
talloc_set_destructor(ads, ads_destructor);
#ifdef HAVE_LDAP
ads_zero_ldap(ads);
#endif
ads->server.realm = talloc_strdup(ads, realm);
if (realm != NULL && ads->server.realm == NULL) {
DBG_WARNING("Out of memory\n");
TALLOC_FREE(ads);
return NULL;
}
ads->server.workgroup = talloc_strdup(ads, workgroup);
if (workgroup != NULL && ads->server.workgroup == NULL) {
DBG_WARNING("Out of memory\n");
TALLOC_FREE(ads);
return NULL;
}
ads->server.ldap_server = talloc_strdup(ads, ldap_server);
if (ldap_server != NULL && ads->server.ldap_server == NULL) {
DBG_WARNING("Out of memory\n");
TALLOC_FREE(ads);
return NULL;
}
wrap_flags = lp_client_ldap_sasl_wrapping();
if (wrap_flags == -1) {
wrap_flags = 0;
}
switch (sasl_state) {
case ADS_SASL_PLAIN:
break;
case ADS_SASL_SIGN:
wrap_flags |= ADS_AUTH_SASL_SIGN;
break;
case ADS_SASL_SEAL:
wrap_flags |= ADS_AUTH_SASL_SEAL;
break;
}
ads->auth.flags = wrap_flags;
/* Start with the configured page size when the connection is new,
* we will drop it by half we get a timeout. */
ads->config.ldap_page_size = lp_ldap_page_size();
return ads;
}
/****************************************************************
****************************************************************/
bool ads_set_sasl_wrap_flags(ADS_STRUCT *ads, unsigned flags)
{
unsigned other_flags;
if (!ads) {
return false;
}
other_flags = ads->auth.flags & ~(ADS_AUTH_SASL_SIGN|ADS_AUTH_SASL_SEAL);
ads->auth.flags = flags | other_flags;
return true;
}
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