Imported Upstream version 4.6.2
This commit is contained in:
Mario Fetka
366
daemons/ipa-slapi-plugins/ipa-cldap/ipa_cldap_netlogon.c
Normal file
366
daemons/ipa-slapi-plugins/ipa-cldap/ipa_cldap_netlogon.c
Normal file
@@ -0,0 +1,366 @@
|
||||
/** BEGIN COPYRIGHT BLOCK
|
||||
* 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/>.
|
||||
*
|
||||
* Additional permission under GPLv3 section 7:
|
||||
*
|
||||
* In the following paragraph, "GPL" means the GNU General Public
|
||||
* License, version 3 or any later version, and "Non-GPL Code" means
|
||||
* code that is governed neither by the GPL nor a license
|
||||
* compatible with the GPL.
|
||||
*
|
||||
* You may link the code of this Program with Non-GPL Code and convey
|
||||
* linked combinations including the two, provided that such Non-GPL
|
||||
* Code only links to the code of this Program through those well
|
||||
* defined interfaces identified in the file named EXCEPTION found in
|
||||
* the source code files (the "Approved Interfaces"). The files of
|
||||
* Non-GPL Code may instantiate templates or use macros or inline
|
||||
* functions from the Approved Interfaces without causing the resulting
|
||||
* work to be covered by the GPL. Only the copyright holders of this
|
||||
* Program may make changes or additions to the list of Approved
|
||||
* Interfaces.
|
||||
*
|
||||
* Authors:
|
||||
* Simo Sorce <ssorce@redhat.com>
|
||||
*
|
||||
* Copyright (C) 2011 Red Hat, Inc.
|
||||
* All rights reserved.
|
||||
* END COPYRIGHT BLOCK **/
|
||||
|
||||
#include "ipa_cldap.h"
|
||||
#include <endian.h>
|
||||
#include <talloc.h>
|
||||
#include <ctype.h>
|
||||
#include "gen_ndr/ndr_nbt.h"
|
||||
#include "gen_ndr/netlogon.h"
|
||||
|
||||
static int string_to_guid(char *str, struct GUID *guid)
|
||||
{
|
||||
unsigned int time_low;
|
||||
unsigned int time_mid;
|
||||
unsigned int time_hi;
|
||||
unsigned int seq[2];
|
||||
unsigned int node[6];
|
||||
int ret;
|
||||
|
||||
ret = sscanf(str, "%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x",
|
||||
&time_low, &time_mid, &time_hi, &seq[0], &seq[1],
|
||||
&node[0], &node[1], &node[2], &node[3], &node[4], &node[5]);
|
||||
if (ret != 11) {
|
||||
return EINVAL;
|
||||
}
|
||||
|
||||
guid->time_low = time_low;
|
||||
guid->time_mid = time_mid;
|
||||
guid->time_hi_and_version = time_hi;
|
||||
guid->clock_seq[0] = seq[0];
|
||||
guid->clock_seq[1] = seq[1];
|
||||
guid->node[0] = node[0];
|
||||
guid->node[1] = node[1];
|
||||
guid->node[2] = node[2];
|
||||
guid->node[3] = node[3];
|
||||
guid->node[4] = node[4];
|
||||
guid->node[5] = node[5];
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int ipa_cldap_get_domain_entry(struct ipa_cldap_ctx *ctx,
|
||||
char **domain,
|
||||
char **guid, char **sid, char **name)
|
||||
{
|
||||
Slapi_PBlock *pb;
|
||||
Slapi_Entry **e = NULL;
|
||||
const char *filter = "objectclass=ipaNTDomainAttrs";
|
||||
int ret;
|
||||
|
||||
pb = slapi_pblock_new();
|
||||
if (!pb) {
|
||||
return ENOMEM;
|
||||
}
|
||||
|
||||
slapi_search_internal_set_pb(pb, ctx->base_dn,
|
||||
LDAP_SCOPE_SUBTREE, filter,
|
||||
NULL, 0, NULL, NULL, ctx->plugin_id, 0);
|
||||
|
||||
slapi_search_internal_pb(pb);
|
||||
slapi_pblock_get(pb, SLAPI_PLUGIN_INTOP_RESULT, &ret);
|
||||
|
||||
if (ret) {
|
||||
ret = ENOENT;
|
||||
goto done;
|
||||
}
|
||||
|
||||
slapi_pblock_get(pb, SLAPI_PLUGIN_INTOP_SEARCH_ENTRIES, &e);
|
||||
if (!e || !e[0] || e[1]) {
|
||||
/* no matches or too many matches */
|
||||
ret = ENOENT;
|
||||
goto done;
|
||||
}
|
||||
|
||||
*guid = slapi_entry_attr_get_charptr(e[0], "ipaNTDomainGUID");
|
||||
*sid = slapi_entry_attr_get_charptr(e[0], "ipaNTSecurityIdentifier");
|
||||
*name = slapi_entry_attr_get_charptr(e[0], "ipaNTFlatName");
|
||||
*domain = slapi_entry_attr_get_charptr(e[0], "cn");
|
||||
|
||||
ret = 0;
|
||||
|
||||
done:
|
||||
slapi_free_search_results_internal(pb);
|
||||
slapi_pblock_destroy(pb);
|
||||
return ret;
|
||||
}
|
||||
|
||||
char *make_netbios_name(TALLOC_CTX *mem_ctx, const char *s)
|
||||
{
|
||||
char *nb_name;
|
||||
const char *p;
|
||||
size_t c = 0;
|
||||
|
||||
if (s == NULL) {
|
||||
return NULL;
|
||||
}
|
||||
|
||||
nb_name = talloc_zero_size(mem_ctx, NETBIOS_NAME_MAX + 1);
|
||||
if (nb_name == NULL) {
|
||||
return NULL;
|
||||
}
|
||||
|
||||
for (p = s; *p && c < NETBIOS_NAME_MAX; p++) {
|
||||
/* Create the NetBIOS name from the first segment of the hostname */
|
||||
if (*p == '.') {
|
||||
break;
|
||||
} else if (isalnum(*p)) {
|
||||
nb_name[c++] = toupper(*p);
|
||||
}
|
||||
}
|
||||
|
||||
if (*nb_name == '\0') {
|
||||
talloc_free(nb_name);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
return nb_name;
|
||||
}
|
||||
|
||||
#define NETLOGON_SAM_LOGON_RESPONSE_EX_pusher \
|
||||
(ndr_push_flags_fn_t)ndr_push_NETLOGON_SAM_LOGON_RESPONSE_EX_with_flags
|
||||
|
||||
static int ipa_cldap_encode_netlogon(char *fq_hostname, char *domain,
|
||||
char *guid, char *sid, char *name,
|
||||
uint32_t ntver, struct berval *reply)
|
||||
{
|
||||
struct NETLOGON_SAM_LOGON_RESPONSE_EX *nlr;
|
||||
enum ndr_err_code ndr_err;
|
||||
DATA_BLOB blob;
|
||||
int ret;
|
||||
|
||||
nlr = talloc_zero(NULL, struct NETLOGON_SAM_LOGON_RESPONSE_EX);
|
||||
if (!nlr) {
|
||||
return ENOMEM;
|
||||
}
|
||||
|
||||
if (!(ntver & (NETLOGON_NT_VERSION_5EX|NETLOGON_NT_VERSION_5EX_WITH_IP))) {
|
||||
ret = EINVAL;
|
||||
goto done;
|
||||
}
|
||||
|
||||
nlr->command = LOGON_SAM_LOGON_RESPONSE_EX;
|
||||
/* nlr->sbz */
|
||||
nlr->server_type = DS_SERVER_PDC |
|
||||
DS_SERVER_GC |
|
||||
DS_SERVER_LDAP |
|
||||
DS_SERVER_DS |
|
||||
DS_SERVER_KDC |
|
||||
DS_SERVER_TIMESERV |
|
||||
DS_SERVER_CLOSEST |
|
||||
DS_SERVER_WRITABLE |
|
||||
DS_SERVER_GOOD_TIMESERV;
|
||||
string_to_guid(guid, &nlr->domain_uuid);
|
||||
nlr->forest = domain;
|
||||
nlr->dns_domain = domain;
|
||||
nlr->pdc_dns_name = fq_hostname;
|
||||
nlr->domain_name = name;
|
||||
|
||||
nlr->pdc_name = make_netbios_name(nlr, fq_hostname);
|
||||
nlr->user_name = "";
|
||||
nlr->server_site = "Default-First-Site-Name";
|
||||
nlr->client_site = "Default-First-Site-Name";
|
||||
/* nlr->sockaddr_size (filled in by ndr_push) */
|
||||
|
||||
nlr->nt_version = NETLOGON_NT_VERSION_5EX|NETLOGON_NT_VERSION_1;
|
||||
if (ntver & NETLOGON_NT_VERSION_5EX_WITH_IP) {
|
||||
nlr->nt_version |= NETLOGON_NT_VERSION_5EX_WITH_IP;
|
||||
nlr->sockaddr.sockaddr_family = 2;
|
||||
nlr->sockaddr.pdc_ip = "127.0.0.1";
|
||||
nlr->sockaddr.remaining.length = 8;
|
||||
nlr->sockaddr.remaining.data = talloc_zero_size(nlr, 8);
|
||||
}
|
||||
|
||||
/* nlr->next_closest_site */
|
||||
nlr->lmnt_token = 0xFFFF;
|
||||
nlr->lm20_token = 0xFFFF;
|
||||
|
||||
ndr_err = ndr_push_struct_blob(&blob, nlr, nlr,
|
||||
NETLOGON_SAM_LOGON_RESPONSE_EX_pusher);
|
||||
if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
|
||||
ret = EFAULT;
|
||||
goto done;
|
||||
}
|
||||
|
||||
reply->bv_val = malloc(blob.length);
|
||||
if (!reply->bv_val) {
|
||||
ret = ENOMEM;
|
||||
goto done;
|
||||
}
|
||||
memcpy(reply->bv_val, blob.data, blob.length);
|
||||
reply->bv_len = blob.length;
|
||||
ret = 0;
|
||||
|
||||
done:
|
||||
talloc_free(nlr);
|
||||
return ret;
|
||||
}
|
||||
|
||||
int ipa_cldap_netlogon(struct ipa_cldap_ctx *ctx,
|
||||
struct ipa_cldap_req *req,
|
||||
struct berval *reply)
|
||||
{
|
||||
char hostname[MAXHOSTNAMELEN + 1]; /* NOTE: lenght hardcoded in kernel */
|
||||
char *domain = NULL;
|
||||
char *our_domain = NULL;
|
||||
char *guid = NULL;
|
||||
char *sid = NULL;
|
||||
char *name = NULL;
|
||||
uint32_t ntver = 0;
|
||||
uint32_t t;
|
||||
char *dot;
|
||||
int ret;
|
||||
int len;
|
||||
int i;
|
||||
|
||||
/* determine request type */
|
||||
|
||||
for (i = 0; i < req->kvps.top; i++) {
|
||||
if (strncasecmp("DnsDomain",
|
||||
req->kvps.pairs[i].attr.bv_val,
|
||||
req->kvps.pairs[i].attr.bv_len) == 0) {
|
||||
/* remove trailing dot if any */
|
||||
len = req->kvps.pairs[i].value.bv_len;
|
||||
if (req->kvps.pairs[i].value.bv_val[len-1] == '.') {
|
||||
len--;
|
||||
}
|
||||
domain = strndup(req->kvps.pairs[i].value.bv_val, len);
|
||||
if (!domain) {
|
||||
ret = ENOMEM;
|
||||
goto done;
|
||||
}
|
||||
continue;
|
||||
}
|
||||
if (strncasecmp("Host",
|
||||
req->kvps.pairs[i].attr.bv_val,
|
||||
req->kvps.pairs[i].attr.bv_len) == 0) {
|
||||
/* we ignore Host for now */
|
||||
continue;
|
||||
}
|
||||
if (strncasecmp("DomainGUID",
|
||||
req->kvps.pairs[i].attr.bv_val,
|
||||
req->kvps.pairs[i].attr.bv_len) == 0) {
|
||||
/* we ignore DomainGUID for now */
|
||||
continue;
|
||||
}
|
||||
if (strncasecmp("DomainSID",
|
||||
req->kvps.pairs[i].attr.bv_val,
|
||||
req->kvps.pairs[i].attr.bv_len) == 0) {
|
||||
/* we ignore DomainSID for now */
|
||||
continue;
|
||||
}
|
||||
if (strncasecmp("User",
|
||||
req->kvps.pairs[i].attr.bv_val,
|
||||
req->kvps.pairs[i].attr.bv_len) == 0) {
|
||||
/* we ignore User for now */
|
||||
continue;
|
||||
}
|
||||
if (strncasecmp("AAC",
|
||||
req->kvps.pairs[i].attr.bv_val,
|
||||
req->kvps.pairs[i].attr.bv_len) == 0) {
|
||||
/* we ignore AAC for now */
|
||||
continue;
|
||||
}
|
||||
if (strncasecmp("NTver",
|
||||
req->kvps.pairs[i].attr.bv_val,
|
||||
req->kvps.pairs[i].attr.bv_len) == 0) {
|
||||
if (req->kvps.pairs[i].value.bv_len != 4) {
|
||||
ret = EINVAL;
|
||||
goto done;
|
||||
}
|
||||
memcpy(&t, req->kvps.pairs[i].value.bv_val, 4);
|
||||
ntver = le32toh(t);
|
||||
continue;
|
||||
}
|
||||
LOG_TRACE("Unknown filter attribute: %s\n",
|
||||
req->kvps.pairs[i].attr.bv_val);
|
||||
}
|
||||
|
||||
if (!ntver) {
|
||||
ret = EINVAL;
|
||||
goto done;
|
||||
}
|
||||
|
||||
ret = gethostname(hostname, MAXHOSTNAMELEN);
|
||||
if (ret == -1) {
|
||||
ret = errno;
|
||||
goto done;
|
||||
}
|
||||
/* Make double sure it is terminated */
|
||||
hostname[MAXHOSTNAMELEN] = '\0';
|
||||
dot = strchr(hostname, '.');
|
||||
if (!dot) {
|
||||
/* this name is not fully qualified, therefore invalid */
|
||||
ret = EINVAL;
|
||||
goto done;
|
||||
}
|
||||
|
||||
/* FIXME: we support only NETLOGON_NT_VERSION_5EX for now */
|
||||
if (!(ntver & NETLOGON_NT_VERSION_5EX)) {
|
||||
ret = EINVAL;
|
||||
goto done;
|
||||
}
|
||||
|
||||
ret = ipa_cldap_get_domain_entry(ctx, &our_domain, &guid, &sid, &name);
|
||||
if (ret) {
|
||||
goto done;
|
||||
}
|
||||
|
||||
/* If a domain is provided, check it is our own.
|
||||
* If no domain is provided the client is asking for our own domain. */
|
||||
if (domain) {
|
||||
ret = strcasecmp(domain, our_domain);
|
||||
if (ret != 0) {
|
||||
ret = EINVAL;
|
||||
goto done;
|
||||
}
|
||||
}
|
||||
|
||||
ret = ipa_cldap_encode_netlogon(hostname, our_domain,
|
||||
guid, sid, name,
|
||||
ntver, reply);
|
||||
|
||||
done:
|
||||
free(domain);
|
||||
slapi_ch_free_string(&our_domain);
|
||||
slapi_ch_free_string(&guid);
|
||||
slapi_ch_free_string(&sid);
|
||||
slapi_ch_free_string(&name);
|
||||
return ret;
|
||||
}
|
||||
Reference in New Issue
Block a user