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/*
Unix SMB/CIFS implementation.
Copyright (C) Brad Henry 2005
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 "libnet/libnet.h"
#include "libcli/cldap/cldap.h"
#include "lib/ldb/include/ldb.h"
#include "lib/ldb/include/ldb_errors.h"
#include "librpc/rpc/dcerpc.h"
#include "libcli/resolve/resolve.h"
#include "param/param.h"
/**
* 1. Setup a CLDAP socket.
* 2. Lookup the default Site-Name.
*/
NTSTATUS libnet_FindSite(TALLOC_CTX *ctx, struct libnet_JoinSite *r)
{
NTSTATUS status;
TALLOC_CTX *tmp_ctx;
char *site_name_str;
char *config_dn_str;
char *server_dn_str;
struct cldap_socket *cldap = NULL;
struct cldap_netlogon search;
tmp_ctx = talloc_named(ctx, 0, "libnet_FindSite temp context");
if (!tmp_ctx) {
r->out.error_string = NULL;
return NT_STATUS_NO_MEMORY;
}
/* Resolve the site name. */
ZERO_STRUCT(search);
search.in.dest_address = r->in.dest_address;
search.in.dest_port = r->in.cldap_port;
search.in.acct_control = -1;
search.in.version = 6;
cldap = cldap_socket_init(tmp_ctx, NULL);
status = cldap_netlogon(cldap, tmp_ctx, &search);
if (!NT_STATUS_IS_OK(status)) {
/*
If cldap_netlogon() returns in error,
default to using Default-First-Site-Name.
*/
site_name_str = talloc_asprintf(tmp_ctx, "%s",
"Default-First-Site-Name");
if (!site_name_str) {
r->out.error_string = NULL;
talloc_free(tmp_ctx);
return NT_STATUS_NO_MEMORY;
}
} else {
site_name_str = talloc_asprintf(tmp_ctx, "%s",
search.out.netlogon.logon5.client_site);
if (!site_name_str) {
r->out.error_string = NULL;
talloc_free(tmp_ctx);
return NT_STATUS_NO_MEMORY;
}
}
/* Generate the CN=Configuration,... DN. */
/* TODO: look it up! */
config_dn_str = talloc_asprintf(tmp_ctx, "CN=Configuration,%s", r->in.domain_dn_str);
if (!config_dn_str) {
r->out.error_string = NULL;
talloc_free(tmp_ctx);
return NT_STATUS_NO_MEMORY;
}
/* Generate the CN=Servers,... DN. */
server_dn_str = talloc_asprintf(tmp_ctx, "CN=%s,CN=Servers,CN=%s,CN=Sites,%s",
r->in.netbios_name, site_name_str, config_dn_str);
if (!server_dn_str) {
r->out.error_string = NULL;
talloc_free(tmp_ctx);
return NT_STATUS_NO_MEMORY;
}
r->out.site_name_str = site_name_str;
talloc_steal(r, site_name_str);
r->out.config_dn_str = config_dn_str;
talloc_steal(r, config_dn_str);
r->out.server_dn_str = server_dn_str;
talloc_steal(r, server_dn_str);
talloc_free(tmp_ctx);
return NT_STATUS_OK;
}
/*
* find out Site specific stuff:
* 1. Lookup the Site name.
* 2. Add entry CN=<netbios name>,CN=Servers,CN=<site name>,CN=Sites,CN=Configuration,<domain dn>.
* TODO: 3.) use DsAddEntry() to create CN=NTDS Settings,CN=<netbios name>,CN=Servers,CN=<site name>,...
*/
NTSTATUS libnet_JoinSite(struct libnet_context *ctx,
struct ldb_context *remote_ldb,
struct libnet_JoinDomain *libnet_r)
{
NTSTATUS status;
TALLOC_CTX *tmp_ctx;
struct libnet_JoinSite *r;
struct ldb_dn *server_dn;
struct ldb_message *msg;
int rtn;
const char *server_dn_str;
const char *config_dn_str;
struct nbt_name name;
const char *dest_addr = NULL;
tmp_ctx = talloc_named(libnet_r, 0, "libnet_JoinSite temp context");
if (!tmp_ctx) {
libnet_r->out.error_string = NULL;
return NT_STATUS_NO_MEMORY;
}
r = talloc(tmp_ctx, struct libnet_JoinSite);
if (!r) {
libnet_r->out.error_string = NULL;
talloc_free(tmp_ctx);
return NT_STATUS_NO_MEMORY;
}
make_nbt_name_client(&name, libnet_r->out.samr_binding->host);
status = resolve_name(lp_resolve_context(ctx->lp_ctx), &name, r, &dest_addr, NULL);
if (!NT_STATUS_IS_OK(status)) {
libnet_r->out.error_string = NULL;
talloc_free(tmp_ctx);
return status;
}
/* Resolve the site name and AD DN's. */
r->in.dest_address = dest_addr;
r->in.netbios_name = libnet_r->in.netbios_name;
r->in.domain_dn_str = libnet_r->out.domain_dn_str;
r->in.cldap_port = lp_cldap_port(global_loadparm);
status = libnet_FindSite(tmp_ctx, r);
if (!NT_STATUS_IS_OK(status)) {
libnet_r->out.error_string =
talloc_steal(libnet_r, r->out.error_string);
talloc_free(tmp_ctx);
return status;
}
config_dn_str = r->out.config_dn_str;
server_dn_str = r->out.server_dn_str;
/*
Add entry CN=<netbios name>,CN=Servers,CN=<site name>,CN=Sites,CN=Configuration,<domain dn>.
*/
msg = ldb_msg_new(tmp_ctx);
if (!msg) {
libnet_r->out.error_string = NULL;
talloc_free(tmp_ctx);
return NT_STATUS_NO_MEMORY;
}
rtn = ldb_msg_add_string(msg, "objectClass", "server");
if (rtn != 0) {
libnet_r->out.error_string = NULL;
talloc_free(tmp_ctx);
return NT_STATUS_NO_MEMORY;
}
rtn = ldb_msg_add_string(msg, "systemFlags", "50000000");
if (rtn != 0) {
libnet_r->out.error_string = NULL;
talloc_free(tmp_ctx);
return NT_STATUS_NO_MEMORY;
}
rtn = ldb_msg_add_string(msg, "serverReference", libnet_r->out.account_dn_str);
if (rtn != 0) {
libnet_r->out.error_string = NULL;
talloc_free(tmp_ctx);
return NT_STATUS_NO_MEMORY;
}
server_dn = ldb_dn_new(tmp_ctx, remote_ldb, server_dn_str);
if ( ! ldb_dn_validate(server_dn)) {
libnet_r->out.error_string = talloc_asprintf(libnet_r,
"Invalid server dn: %s",
server_dn_str);
talloc_free(tmp_ctx);
return NT_STATUS_UNSUCCESSFUL;
}
msg->dn = server_dn;
rtn = ldb_add(remote_ldb, msg);
if (rtn == LDB_ERR_ENTRY_ALREADY_EXISTS) {
int i;
/* make a 'modify' msg, and only for serverReference */
msg = ldb_msg_new(tmp_ctx);
if (!msg) {
libnet_r->out.error_string = NULL;
talloc_free(tmp_ctx);
return NT_STATUS_NO_MEMORY;
}
msg->dn = server_dn;
rtn = ldb_msg_add_string(msg, "serverReference",libnet_r->out.account_dn_str);
if (rtn != 0) {
libnet_r->out.error_string = NULL;
talloc_free(tmp_ctx);
return NT_STATUS_NO_MEMORY;
}
/* mark all the message elements (should be just one)
as LDB_FLAG_MOD_REPLACE */
for (i=0;i<msg->num_elements;i++) {
msg->elements[i].flags = LDB_FLAG_MOD_REPLACE;
}
rtn = ldb_modify(remote_ldb, msg);
if (rtn != 0) {
libnet_r->out.error_string
= talloc_asprintf(libnet_r,
"Failed to modify server entry %s: %s: %d",
server_dn_str,
ldb_errstring(remote_ldb), rtn);
talloc_free(tmp_ctx);
return NT_STATUS_INTERNAL_DB_CORRUPTION;
}
} else if (rtn != 0) {
libnet_r->out.error_string
= talloc_asprintf(libnet_r,
"Failed to add server entry %s: %s: %d",
server_dn_str, ldb_errstring(remote_ldb),
rtn);
talloc_free(tmp_ctx);
return NT_STATUS_INTERNAL_DB_CORRUPTION;
}
DEBUG(0, ("We still need to perform a DsAddEntry() so that we can create the CN=NTDS Settings container.\n"));
/* Store the server DN in libnet_r */
libnet_r->out.server_dn_str = server_dn_str;
talloc_steal(libnet_r, server_dn_str);
talloc_free(tmp_ctx);
return NT_STATUS_OK;
}
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