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r10852: Continuation-based programming can become a bit spaghetti...

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Initialize a domain structure properly. Excerpt from wb_init_domain.c:

/*
 * Initialize a domain:
 *
 * - With schannel credentials, try to open the SMB connection with the machine
 *   creds. Fall back to anonymous.
 *
 * - If we have schannel creds, do the auth2 and open the schannel'ed netlogon
 *   pipe.
 *
 * - Open LSA. If we have machine creds, try to open with ntlmssp. Fall back
 *   to schannel and then to anon bind.
 *
 * - With queryinfopolicy, verify that we're talking to the right domain
 *
 * A bit complex, but with all the combinations I think it's the best we can
 * get. NT4, W2k3SP1 and W2k all have different combinations, but in the end we
 * have a signed&sealed lsa connection on all of them.
 *
 * Is this overkill? In particular the authenticated SMB connection seems a
 * bit overkill, given that we do schannel for netlogon and ntlmssp for
 * lsa later on w2k3, the others don't do this anyway.
 */

Thanks to Jeremy for his detective work, and to the Samba4 team for providing
such a great infrastructure.

Next step is to connect to SAM. Do it via LDAP if we can, fall back to samr
with all we have.

Volker
This commit is contained in:
Volker Lendecke
2005-10-09 20:32:24 +00:00
committed by Gerald (Jerry) Carter
parent 3c2558d11e
commit 3e69fdc07c
7 changed files with 665 additions and 249 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
source/include/structs.h
View File

@@ -215,6 +215,8 @@ struct lsa_RightSet;
struct composite_context; struct composite_context;
struct monitor_msg; struct monitor_msg;
struct irpc_request;
struct rpc_request;
struct smb_composite_loadfile; struct smb_composite_loadfile;
struct smb_composite_savefile; struct smb_composite_savefile;
@@ -292,6 +294,7 @@ struct samba3_share_info;
struct samba3; struct samba3;
struct wbsrv_service; struct wbsrv_service;
struct wbsrv_domain;
struct wbsrv_protocol_ops; struct wbsrv_protocol_ops;
struct wbsrv_listen_socket; struct wbsrv_listen_socket;
struct wbsrv_connection; struct wbsrv_connection;

74
source/libcli/composite/composite.c
View File

@@ -25,7 +25,7 @@
#include "lib/events/events.h" #include "lib/events/events.h"
#include "libcli/raw/libcliraw.h" #include "libcli/raw/libcliraw.h"
#include "libcli/composite/composite.h" #include "libcli/composite/composite.h"
#include "lib/messaging/irpc.h"
/* /*
block until a composite function has completed, then return the status block until a composite function has completed, then return the status
@@ -68,3 +68,75 @@ void composite_trigger_done(struct composite_context *c)
/* a zero timeout means immediate */ /* a zero timeout means immediate */
event_add_timed(c->event_ctx, c, timeval_zero(), composite_trigger, c); event_add_timed(c->event_ctx, c, timeval_zero(), composite_trigger, c);
} }
/*
* Some composite helpers that are handy if you write larger composite
* functions.
*/
BOOL comp_is_ok(struct composite_context *ctx)
{
if (NT_STATUS_IS_OK(ctx->status)) {
return True;
}
ctx->state = COMPOSITE_STATE_ERROR;
if (ctx->async.fn != NULL) {
ctx->async.fn(ctx);
}
return False;
}
void comp_error(struct composite_context *ctx, NTSTATUS status)
{
ctx->status = status;
SMB_ASSERT(!comp_is_ok(ctx));
}
BOOL comp_nomem(const void *p, struct composite_context *ctx)
{
if (p != NULL) {
return False;
}
comp_error(ctx, NT_STATUS_NO_MEMORY);
return True;
}
void comp_done(struct composite_context *ctx)
{
ctx->state = COMPOSITE_STATE_DONE;
if (ctx->async.fn != NULL) {
ctx->async.fn(ctx);
}
}
void comp_cont(struct composite_context *ctx,
struct composite_context *new_ctx,
void (*continuation)(struct composite_context *),
void *private_data)
{
if (comp_nomem(new_ctx, ctx)) return;
new_ctx->async.fn = continuation;
new_ctx->async.private_data = private_data;
}
void rpc_cont(struct composite_context *ctx,
struct rpc_request *new_req,
void (*continuation)(struct rpc_request *),
void *private_data)
{
if (comp_nomem(new_req, ctx)) return;
new_req->async.callback = continuation;
new_req->async.private = private_data;
}
void irpc_cont(struct composite_context *ctx,
struct irpc_request *new_req,
void (*continuation)(struct irpc_request *),
void *private_data)
{
if (comp_nomem(new_req, ctx)) return;
new_req->async.fn = continuation;
new_req->async.private = private_data;
}

1
source/winbind/config.mk
View File

@@ -9,6 +9,7 @@ INIT_OBJ_FILES = \
winbind/wb_server.o \ winbind/wb_server.o \
winbind/wb_samba3_protocol.o \ winbind/wb_samba3_protocol.o \
winbind/wb_samba3_cmd.o \ winbind/wb_samba3_cmd.o \
winbind/wb_init_domain.o \
winbind/wb_async_helpers.o winbind/wb_async_helpers.o
REQUIRED_SUBSYSTEMS = RPC_NDR_LSA REQUIRED_SUBSYSTEMS = RPC_NDR_LSA
# End MODULE server_service_winbind # End MODULE server_service_winbind

254
source/winbind/wb_async_helpers.c
View File

@@ -38,71 +38,6 @@
#include "librpc/gen_ndr/ndr_lsa.h" #include "librpc/gen_ndr/ndr_lsa.h"
#include "libcli/auth/credentials.h" #include "libcli/auth/credentials.h"
static BOOL comp_is_ok(struct composite_context *ctx)
{
if (NT_STATUS_IS_OK(ctx->status)) {
return True;
}
ctx->state = COMPOSITE_STATE_ERROR;
if (ctx->async.fn != NULL) {
ctx->async.fn(ctx);
}
return False;
}
static void comp_error(struct composite_context *ctx, NTSTATUS status)
{
ctx->status = status;
SMB_ASSERT(!comp_is_ok(ctx));
}
static BOOL comp_nomem(const void *p, struct composite_context *ctx)
{
if (p != NULL) {
return False;
}
comp_error(ctx, NT_STATUS_NO_MEMORY);
return True;
}
static void comp_done(struct composite_context *ctx)
{
ctx->state = COMPOSITE_STATE_DONE;
if (ctx->async.fn != NULL) {
ctx->async.fn(ctx);
}
}
static void comp_cont(struct composite_context *ctx,
struct composite_context *new_ctx,
void (*continuation)(struct composite_context *),
void *private_data)
{
if (comp_nomem(new_ctx, ctx)) return;
new_ctx->async.fn = continuation;
new_ctx->async.private_data = private_data;
}
static void rpc_cont(struct composite_context *ctx,
struct rpc_request *new_req,
void (*continuation)(struct rpc_request *),
void *private_data)
{
if (comp_nomem(new_req, ctx)) return;
new_req->async.callback = continuation;
new_req->async.private = private_data;
}
static void irpc_cont(struct composite_context *ctx,
struct irpc_request *new_req,
void (*continuation)(struct irpc_request *),
void *private_data)
{
if (comp_nomem(new_req, ctx)) return;
new_req->async.fn = continuation;
new_req->async.private = private_data;
}
struct finddcs_state { struct finddcs_state {
struct composite_context *ctx; struct composite_context *ctx;
struct messaging_context *msg_ctx; struct messaging_context *msg_ctx;
@@ -1042,8 +977,7 @@ struct cmd_checkmachacc_state {
struct wbsrv_domain *domain; struct wbsrv_domain *domain;
}; };
static void cmd_checkmachacc_recv_lsa(struct composite_context *ctx); static void cmd_checkmachacc_recv_init(struct composite_context *ctx);
static void cmd_checkmachacc_recv_creds(struct composite_context *ctx);
struct composite_context *wb_cmd_checkmachacc_send(struct wbsrv_call *call) struct composite_context *wb_cmd_checkmachacc_send(struct wbsrv_call *call)
{ {
@@ -1078,32 +1012,10 @@ struct composite_context *wb_cmd_checkmachacc_send(struct wbsrv_call *call)
schannel_creds); schannel_creds);
if (!NT_STATUS_IS_OK(state->ctx->status)) goto failed; if (!NT_STATUS_IS_OK(state->ctx->status)) goto failed;
if (state->domain->netlogon_auth2_pipe != NULL) { ctx = wb_init_domain_send(state->domain, result->event_ctx,
talloc_free(state->domain->netlogon_auth2_pipe); call->wbconn->conn->msg_ctx);
state->domain->netlogon_auth2_pipe = NULL;
}
if (state->domain->lsa_pipe != NULL) {
struct smbcli_tree *tree =
dcerpc_smb_tree(state->domain->lsa_pipe->conn);
if (tree == NULL) goto failed;
ctx = wb_get_schannel_creds_send(state->domain->schannel_creds,
tree, result->event_ctx);
if (ctx == NULL) goto failed;
ctx->async.fn = cmd_checkmachacc_recv_creds;
ctx->async.private_data = state;
return result;
}
ctx = wb_get_lsa_pipe_send(result->event_ctx,
call->wbconn->conn->msg_ctx,
state->domain->name,
state->domain->sid);
if (ctx == NULL) goto failed; if (ctx == NULL) goto failed;
ctx->async.fn = cmd_checkmachacc_recv_lsa; ctx->async.fn = cmd_checkmachacc_recv_init;
ctx->async.private_data = state; ctx->async.private_data = state;
return result; return result;
@@ -1113,63 +1025,23 @@ struct composite_context *wb_cmd_checkmachacc_send(struct wbsrv_call *call)
return NULL; return NULL;
} }
static void cmd_checkmachacc_recv_lsa(struct composite_context *ctx) static void cmd_checkmachacc_recv_init(struct composite_context *ctx)
{ {
struct cmd_checkmachacc_state *state = struct cmd_checkmachacc_state *state =
talloc_get_type(ctx->async.private_data, talloc_get_type(ctx->async.private_data,
struct cmd_checkmachacc_state); struct cmd_checkmachacc_state);
struct wbsrv_service *service =
state->call->wbconn->listen_socket->service;
struct dcerpc_pipe *pipe; state->ctx->status = wb_init_domain_recv(ctx);
struct smbcli_tree *tree;
state->ctx->status = wb_get_lsa_pipe_recv(ctx, state, &pipe);
if (!comp_is_ok(state->ctx)) return; if (!comp_is_ok(state->ctx)) return;
if (state->domain->lsa_pipe == NULL) {
/* We gonna drop "our" pipe if someone else was faster */
state->domain->lsa_pipe = talloc_steal(service, pipe);
}
tree = dcerpc_smb_tree(state->domain->lsa_pipe->conn);
if (tree == NULL) {
comp_error(state->ctx, NT_STATUS_INVALID_PARAMETER);
return;
}
ctx = wb_get_schannel_creds_send(state->domain->schannel_creds, tree,
state->ctx->event_ctx);
comp_cont(state->ctx, ctx, cmd_checkmachacc_recv_creds, state);
}
static void cmd_checkmachacc_recv_creds(struct composite_context *ctx)
{
struct cmd_checkmachacc_state *state =
talloc_get_type(ctx->async.private_data,
struct cmd_checkmachacc_state);
struct wbsrv_service *service =
state->call->wbconn->listen_socket->service;
struct dcerpc_pipe *pipe;
state->ctx->status = wb_get_schannel_creds_recv(ctx, state, &pipe);
if (!comp_is_ok(state->ctx)) return;
if (state->domain->netlogon_auth2_pipe != NULL) {
/* Someone else was faster, we need to replace it with our
* pipe */
talloc_free(state->domain->netlogon_auth2_pipe);
}
state->domain->netlogon_auth2_pipe = talloc_steal(service, pipe);
comp_done(state->ctx); comp_done(state->ctx);
} }
NTSTATUS wb_cmd_checkmachacc_recv(struct composite_context *c) NTSTATUS wb_cmd_checkmachacc_recv(struct composite_context *c)
{ {
return composite_wait(c); NTSTATUS status = composite_wait(c);
talloc_free(c);
return status;
} }
NTSTATUS wb_cmd_checkmachacc(struct wbsrv_call *call) NTSTATUS wb_cmd_checkmachacc(struct wbsrv_call *call)
@@ -1177,111 +1049,3 @@ NTSTATUS wb_cmd_checkmachacc(struct wbsrv_call *call)
struct composite_context *c = wb_cmd_checkmachacc_send(call); struct composite_context *c = wb_cmd_checkmachacc_send(call);
return wb_cmd_checkmachacc_recv(c); return wb_cmd_checkmachacc_recv(c);
} }
struct get_netlogon_pipe_state {
struct composite_context *ctx;
struct wbsrv_call *call;
struct wbsrv_domain *domain;
struct dcerpc_pipe *p;
};
static void get_netlogon_pipe_recv_machacc(struct composite_context *ctx);
static void get_netlogon_pipe_recv_pipe(struct composite_context *ctx);
struct composite_context *wb_get_netlogon_pipe_send(struct wbsrv_call *call)
{
struct composite_context *result, *ctx;
struct get_netlogon_pipe_state *state;
struct wbsrv_service *service = call->wbconn->listen_socket->service;
result = talloc(call, struct composite_context);
if (result == NULL) goto failed;
result->state = COMPOSITE_STATE_IN_PROGRESS;
result->event_ctx = call->event_ctx;
state = talloc(result, struct get_netlogon_pipe_state);
if (state == NULL) goto failed;
state->ctx = result;
result->private_data = state;
state->call = call;
state->domain = service->domains;
if (state->domain->netlogon_pipe != NULL) {
talloc_free(state->domain->netlogon_pipe);
state->domain->netlogon_pipe = NULL;
}
ctx = wb_cmd_checkmachacc_send(call);
if (ctx == NULL) goto failed;
ctx->async.fn = get_netlogon_pipe_recv_machacc;
ctx->async.private_data = state;
return result;
failed:
talloc_free(result);
return NULL;
}
static void get_netlogon_pipe_recv_machacc(struct composite_context *ctx)
{
struct get_netlogon_pipe_state *state =
talloc_get_type(ctx->async.private_data,
struct get_netlogon_pipe_state);
struct smbcli_tree *tree = NULL;
state->ctx->status = wb_cmd_checkmachacc_recv(ctx);
if (!comp_is_ok(state->ctx)) return;
state->p = dcerpc_pipe_init(state, state->ctx->event_ctx);
if (comp_nomem(state->p, state->ctx)) return;
if (state->domain->lsa_pipe != NULL) {
tree = dcerpc_smb_tree(state->domain->lsa_pipe->conn);
}
if (tree == NULL) {
comp_error(state->ctx, NT_STATUS_INTERNAL_ERROR);
return;
}
ctx = dcerpc_pipe_open_smb_send(state->p->conn, tree, "\\netlogon");
comp_cont(state->ctx, ctx, get_netlogon_pipe_recv_pipe, state);
}
static void get_netlogon_pipe_recv_pipe(struct composite_context *ctx)
{
struct get_netlogon_pipe_state *state =
talloc_get_type(ctx->async.private_data,
struct get_netlogon_pipe_state);
struct wbsrv_service *service =
state->call->wbconn->listen_socket->service;
state->ctx->status = dcerpc_pipe_open_smb_recv(ctx);
if (!comp_is_ok(state->ctx)) return;
state->p->conn->flags |= (DCERPC_SIGN | DCERPC_SEAL);
state->ctx->status =
dcerpc_bind_auth_password(state->p,
DCERPC_NETLOGON_UUID,
DCERPC_NETLOGON_VERSION,
state->domain->schannel_creds,
DCERPC_AUTH_TYPE_SCHANNEL,
NULL);
if (!comp_is_ok(state->ctx)) return;
state->domain->netlogon_pipe = talloc_steal(service, state->p);
comp_done(state->ctx);
}
NTSTATUS wb_get_netlogon_pipe_recv(struct composite_context *c)
{
return composite_wait(c);
}
NTSTATUS wb_get_netlogon_pipe(struct wbsrv_call *call)
{
struct composite_context *c = wb_get_netlogon_pipe_send(call);
return wb_get_netlogon_pipe_recv(c);
}

564
source/winbind/wb_init_domain.c Normal file
View File

@@ -0,0 +1,564 @@
/*
Unix SMB/CIFS implementation.
Copyright (C) Volker Lendecke 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 2 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, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/*
a composite API for initializing a domain
*/
#include "includes.h"
#include "libcli/composite/composite.h"
#include "libcli/smb_composite/smb_composite.h"
#include "winbind/wb_async_helpers.h"
#include "winbind/wb_server.h"
#include "smbd/service_stream.h"
#include "librpc/gen_ndr/nbt.h"
#include "librpc/gen_ndr/samr.h"
#include "lib/messaging/irpc.h"
#include "librpc/gen_ndr/irpc.h"
#include "librpc/gen_ndr/ndr_irpc.h"
#include "libcli/raw/libcliraw.h"
#include "librpc/gen_ndr/ndr_netlogon.h"
#include "librpc/gen_ndr/ndr_lsa.h"
#include "libcli/auth/credentials.h"
/* Helper to initialize LSA with different auth methods and opening the lsa
* policy */
struct init_lsa_state {
struct composite_context *ctx;
struct dcerpc_pipe *lsa_pipe;
uint8_t auth_type;
struct cli_credentials *creds;
struct lsa_ObjectAttribute objectattr;
struct lsa_OpenPolicy2 openpolicy;
struct policy_handle *handle;
};
static void init_lsa_recv_pipe(struct composite_context *ctx);
static void init_lsa_recv_openpol(struct rpc_request *req);
static struct composite_context *wb_init_lsa_send(struct smbcli_tree *tree,
uint8_t auth_type,
struct cli_credentials *creds)
{
struct composite_context *result, *ctx;
struct init_lsa_state *state;
result = talloc(NULL, struct composite_context);
if (result == NULL) goto failed;
result->state = COMPOSITE_STATE_IN_PROGRESS;
result->event_ctx = tree->session->transport->socket->event.ctx;
state = talloc(result, struct init_lsa_state);
if (state == NULL) goto failed;
state->ctx = result;
result->private_data = state;
state->auth_type = auth_type;
state->creds = creds;
state->lsa_pipe = dcerpc_pipe_init(state, result->event_ctx);
if (state->lsa_pipe == NULL) goto failed;
ctx = dcerpc_pipe_open_smb_send(state->lsa_pipe->conn, tree,
"\\lsarpc");
ctx->async.fn = init_lsa_recv_pipe;
ctx->async.private_data = state;
return result;
failed:
talloc_free(result);
return NULL;
}
static void init_lsa_recv_pipe(struct composite_context *ctx)
{
struct init_lsa_state *state =
talloc_get_type(ctx->async.private_data,
struct init_lsa_state);
struct rpc_request *req;
state->ctx->status = dcerpc_pipe_open_smb_recv(ctx);
if (!comp_is_ok(state->ctx)) return;
switch (state->auth_type) {
case DCERPC_AUTH_TYPE_NONE:
state->ctx->status =
dcerpc_bind_auth_none(state->lsa_pipe,
DCERPC_LSARPC_UUID,
DCERPC_LSARPC_VERSION);
break;
case DCERPC_AUTH_TYPE_NTLMSSP:
case DCERPC_AUTH_TYPE_SCHANNEL:
if (state->creds == NULL) {
comp_error(state->ctx, NT_STATUS_INTERNAL_ERROR);
return;
}
state->lsa_pipe->conn->flags |= (DCERPC_SIGN | DCERPC_SEAL);
state->ctx->status =
dcerpc_bind_auth_password(state->lsa_pipe,
DCERPC_LSARPC_UUID,
DCERPC_LSARPC_VERSION,
state->creds,
state->auth_type,
NULL);
break;
default:
state->ctx->status = NT_STATUS_INTERNAL_ERROR;
}
state->handle = talloc(state, struct policy_handle);
if (comp_nomem(state->handle, state->ctx)) return;
state->openpolicy.in.system_name =
talloc_asprintf(state, "\\\\%s",
dcerpc_server_name(state->lsa_pipe));
ZERO_STRUCT(state->objectattr);
state->openpolicy.in.attr = &state->objectattr;
state->openpolicy.in.access_mask = SEC_FLAG_MAXIMUM_ALLOWED;
state->openpolicy.out.handle = state->handle;
req = dcerpc_lsa_OpenPolicy2_send(state->lsa_pipe, state,
&state->openpolicy);
rpc_cont(state->ctx, req, init_lsa_recv_openpol, state);
}
static void init_lsa_recv_openpol(struct rpc_request *req)
{
struct init_lsa_state *state =
talloc_get_type(req->async.private,
struct init_lsa_state);
state->ctx->status = dcerpc_ndr_request_recv(req);
if (!comp_is_ok(state->ctx)) return;
state->ctx->status = state->openpolicy.out.result;
if (!comp_is_ok(state->ctx)) return;
comp_done(state->ctx);
}
static NTSTATUS wb_init_lsa_recv(struct composite_context *c,
TALLOC_CTX *mem_ctx,
struct dcerpc_pipe **lsa_pipe,
struct policy_handle **lsa_policy)
{
NTSTATUS status = composite_wait(c);
if (NT_STATUS_IS_OK(status)) {
struct init_lsa_state *state =
talloc_get_type(c->private_data,
struct init_lsa_state);
*lsa_pipe = talloc_steal(mem_ctx, state->lsa_pipe);
*lsa_policy = talloc_steal(mem_ctx, state->handle);
}
talloc_free(c);
return status;
}
/*
* Initialize a domain:
*
* - With schannel credentials, try to open the SMB connection with the machine
* creds. Fall back to anonymous.
*
* - If we have schannel creds, do the auth2 and open the schannel'ed netlogon
* pipe.
*
* - Open LSA. If we have machine creds, try to open with ntlmssp. Fall back
* to schannel and then to anon bind.
*
* - With queryinfopolicy, verify that we're talking to the right domain
*
* A bit complex, but with all the combinations I think it's the best we can
* get. NT4, W2k3 and W2k all have different combinations, but in the end we
* have a signed&sealed lsa connection on all of them.
*
* Not sure if it is overkill, but it seems to work.
*/
struct init_domain_state {
struct composite_context *ctx;
struct wbsrv_domain *domain;
int num_dcs;
struct nbt_dc_name *dcs;
struct smb_composite_connect conn;
struct dcerpc_pipe *auth2_pipe;
struct dcerpc_pipe *netlogon_pipe;
struct dcerpc_pipe *lsa_pipe;
struct policy_handle *lsa_policy;
struct lsa_QueryInfoPolicy queryinfo;
};
static void init_domain_recv_dcs(struct composite_context *ctx);
static void init_domain_recv_authsmb(struct composite_context *ctx);
static void init_domain_anonsmb(struct init_domain_state *state);
static void init_domain_recv_anonsmb(struct composite_context *ctx);
static void init_domain_openpipes(struct init_domain_state *state);
static void init_domain_openlsa(struct init_domain_state *state);
static void init_domain_recv_netlogoncreds(struct composite_context *ctx);
static void init_domain_recv_netlogonpipe(struct composite_context *ctx);
static void init_domain_recv_lsa_ntlmssp(struct composite_context *ctx);
static void init_domain_recv_lsa_schannel(struct composite_context *ctx);
static void init_domain_recv_lsa_none(struct composite_context *ctx);
static void init_domain_check_lsa(struct init_domain_state *state);
static void init_domain_recv_queryinfo(struct rpc_request *req);
struct composite_context *wb_init_domain_send(struct wbsrv_domain *domain,
struct event_context *event_ctx,
struct messaging_context *msg_ctx)
{
struct composite_context *result, *ctx;
struct init_domain_state *state;
result = talloc(domain, struct composite_context);
if (result == NULL) goto failed;
result->state = COMPOSITE_STATE_IN_PROGRESS;
result->async.fn = NULL;
result->event_ctx = event_ctx;
state = talloc_zero(result, struct init_domain_state);
if (state == NULL) goto failed;
state->ctx = result;
result->private_data = state;
state->domain = domain;
ctx = wb_finddcs_send(domain->name, domain->sid, event_ctx, msg_ctx);
if (ctx == NULL) goto failed;
ctx->async.fn = init_domain_recv_dcs;
ctx->async.private_data = state;
return result;
failed:
talloc_free(result);
return NULL;
}
static void init_domain_recv_dcs(struct composite_context *ctx)
{
struct init_domain_state *state =
talloc_get_type(ctx->async.private_data,
struct init_domain_state);
state->ctx->status = wb_finddcs_recv(ctx, state, &state->num_dcs,
&state->dcs);
if (!comp_is_ok(state->ctx)) return;
if (state->num_dcs < 1) {
comp_error(state->ctx, NT_STATUS_NO_LOGON_SERVERS);
return;
}
state->conn.in.dest_host = state->dcs[0].address;
state->conn.in.port = 0;
state->conn.in.called_name = state->dcs[0].name;
state->conn.in.service = "IPC$";
state->conn.in.service_type = "IPC";
state->conn.in.workgroup = state->domain->name;
if (state->domain->schannel_creds != NULL) {
/* Try to connect as workstation */
state->conn.in.credentials = state->domain->schannel_creds;
ctx = smb_composite_connect_send(&state->conn, state,
state->ctx->event_ctx);
comp_cont(state->ctx, ctx, init_domain_recv_authsmb, state);
return;
}
init_domain_anonsmb(state);
}
static void init_domain_recv_authsmb(struct composite_context *ctx)
{
struct init_domain_state *state =
talloc_get_type(ctx->async.private_data,
struct init_domain_state);
state->ctx->status = smb_composite_connect_recv(ctx, state);
if (NT_STATUS_IS_OK(state->ctx->status)) {
init_domain_openpipes(state);
return;
}
init_domain_anonsmb(state);
}
static void init_domain_anonsmb(struct init_domain_state *state)
{
struct composite_context *ctx;
state->conn.in.credentials = cli_credentials_init(state);
if (comp_nomem(state->conn.in.credentials, state->ctx)) return;
cli_credentials_set_conf(state->conn.in.credentials);
cli_credentials_set_anonymous(state->conn.in.credentials);
ctx = smb_composite_connect_send(&state->conn, state,
state->ctx->event_ctx);
comp_cont(state->ctx, ctx, init_domain_recv_anonsmb, state);
}
static void init_domain_recv_anonsmb(struct composite_context *ctx)
{
struct init_domain_state *state =
talloc_get_type(ctx->async.private_data,
struct init_domain_state);
state->ctx->status = smb_composite_connect_recv(ctx, state);
if (!comp_is_ok(state->ctx)) return;
init_domain_openpipes(state);
}
static void init_domain_openpipes(struct init_domain_state *state)
{
struct composite_context *ctx;
if (state->domain->schannel_creds == NULL) {
/* No chance to open netlogon */
init_domain_openlsa(state);
return;
}
ctx = wb_get_schannel_creds_send(state->domain->schannel_creds,
state->conn.out.tree,
state->ctx->event_ctx);
comp_cont(state->ctx, ctx, init_domain_recv_netlogoncreds, state);
}
static void init_domain_recv_netlogoncreds(struct composite_context *ctx)
{
struct init_domain_state *state =
talloc_get_type(ctx->async.private_data,
struct init_domain_state);
struct smbcli_tree *tree = NULL;
state->ctx->status = wb_get_schannel_creds_recv(ctx, state,
&state->auth2_pipe);
if (!comp_is_ok(state->ctx)) return;
talloc_unlink(state, state->conn.out.tree); /* The pipe owns it now */
state->netlogon_pipe = dcerpc_pipe_init(state, state->ctx->event_ctx);
if (comp_nomem(state->netlogon_pipe, state->ctx)) return;
if (state->auth2_pipe != NULL) {
tree = dcerpc_smb_tree(state->auth2_pipe->conn);
}
if (tree == NULL) {
comp_error(state->ctx, NT_STATUS_INTERNAL_ERROR);
return;
}
ctx = dcerpc_pipe_open_smb_send(state->netlogon_pipe->conn, tree,
"\\netlogon");
comp_cont(state->ctx, ctx, init_domain_recv_netlogonpipe, state);
}
static void init_domain_recv_netlogonpipe(struct composite_context *ctx)
{
struct init_domain_state *state =
talloc_get_type(ctx->async.private_data,
struct init_domain_state);
state->ctx->status = dcerpc_pipe_open_smb_recv(ctx);
if (!comp_is_ok(state->ctx)) return;
state->netlogon_pipe->conn->flags |= (DCERPC_SIGN | DCERPC_SEAL);
state->ctx->status =
dcerpc_bind_auth_password(state->netlogon_pipe,
DCERPC_NETLOGON_UUID,
DCERPC_NETLOGON_VERSION,
state->domain->schannel_creds,
DCERPC_AUTH_TYPE_SCHANNEL,
NULL);
if (!comp_is_ok(state->ctx)) return;
init_domain_openlsa(state);
}
static void init_domain_openlsa(struct init_domain_state *state)
{
struct composite_context *ctx;
if (state->domain->schannel_creds != NULL) {
ctx = wb_init_lsa_send(state->conn.out.tree,
DCERPC_AUTH_TYPE_NTLMSSP,
state->domain->schannel_creds);
comp_cont(state->ctx, ctx,
init_domain_recv_lsa_ntlmssp, state);
return;
}
ctx = wb_init_lsa_send(state->conn.out.tree, DCERPC_AUTH_TYPE_NONE,
NULL);
comp_cont(state->ctx, ctx, init_domain_recv_lsa_none, state);
}
static void init_domain_recv_lsa_ntlmssp(struct composite_context *ctx)
{
struct init_domain_state *state =
talloc_get_type(ctx->async.private_data,
struct init_domain_state);
state->ctx->status = wb_init_lsa_recv(ctx, state, &state->lsa_pipe,
&state->lsa_policy);
if (NT_STATUS_IS_OK(state->ctx->status)) {
init_domain_check_lsa(state);
return;
}
ctx = wb_init_lsa_send(state->conn.out.tree,
DCERPC_AUTH_TYPE_SCHANNEL,
state->domain->schannel_creds);
comp_cont(state->ctx, ctx, init_domain_recv_lsa_schannel, state);
}
static void init_domain_recv_lsa_schannel(struct composite_context *ctx)
{
struct init_domain_state *state =
talloc_get_type(ctx->async.private_data,
struct init_domain_state);
state->ctx->status = wb_init_lsa_recv(ctx, state, &state->lsa_pipe,
&state->lsa_policy);
if (NT_STATUS_IS_OK(state->ctx->status)) {
init_domain_check_lsa(state);
return;
}
ctx = wb_init_lsa_send(state->conn.out.tree,
DCERPC_AUTH_TYPE_NONE, NULL);
comp_cont(state->ctx, ctx, init_domain_recv_lsa_none, state);
}
static void init_domain_recv_lsa_none(struct composite_context *ctx)
{
struct init_domain_state *state =
talloc_get_type(ctx->async.private_data,
struct init_domain_state);
state->ctx->status = wb_init_lsa_recv(ctx, state, &state->lsa_pipe,
&state->lsa_policy);
if (!comp_is_ok(state->ctx)) return;
init_domain_check_lsa(state);
}
static void init_domain_check_lsa(struct init_domain_state *state)
{
struct rpc_request *req;
if (state->auth2_pipe == NULL) {
/* Give the tree to the LSA pipe, otherwise it has been given
* to the auth2 pipe already */
talloc_unlink(state, state->conn.out.tree);
state->conn.out.tree = NULL;
}
state->queryinfo.in.handle = state->lsa_policy;
state->queryinfo.in.level = LSA_POLICY_INFO_ACCOUNT_DOMAIN;
req = dcerpc_lsa_QueryInfoPolicy_send(state->lsa_pipe, state,
&state->queryinfo);
rpc_cont(state->ctx, req, init_domain_recv_queryinfo, state);
}
static void init_domain_recv_queryinfo(struct rpc_request *req)
{
struct init_domain_state *state =
talloc_get_type(req->async.private, struct init_domain_state);
struct lsa_DomainInfo *dominfo;
state->ctx->status = dcerpc_ndr_request_recv(req);
if (!comp_is_ok(state->ctx)) return;
state->ctx->status = state->queryinfo.out.result;
if (!comp_is_ok(state->ctx)) return;
dominfo = &state->queryinfo.out.info->account_domain;
if (strcasecmp(state->domain->name, dominfo->name.string) != 0) {
DEBUG(2, ("Expected domain name %s, DC %s said %s\n",
state->domain->name,
dcerpc_server_name(state->lsa_pipe),
dominfo->name.string));
comp_error(state->ctx, NT_STATUS_INVALID_DOMAIN_STATE);
return;
}
if (!dom_sid_equal(state->domain->sid, dominfo->sid)) {
DEBUG(2, ("Expected domain sid %s, DC %s said %s\n",
dom_sid_string(state, state->domain->sid),
dcerpc_server_name(state->lsa_pipe),
dom_sid_string(state, dominfo->sid)));
comp_error(state->ctx, NT_STATUS_INVALID_DOMAIN_STATE);
return;
}
comp_done(state->ctx);
}
NTSTATUS wb_init_domain_recv(struct composite_context *c)
{
NTSTATUS status = composite_wait(c);
if (NT_STATUS_IS_OK(status)) {
struct init_domain_state *state =
talloc_get_type(c->private_data,
struct init_domain_state);
struct wbsrv_domain *domain = state->domain;
talloc_free(domain->netlogon_auth2_pipe);
domain->netlogon_auth2_pipe =
talloc_steal(domain, state->auth2_pipe);
talloc_free(domain->netlogon_pipe);
domain->netlogon_pipe =
talloc_steal(domain, state->netlogon_pipe);
talloc_free(domain->lsa_pipe);
domain->lsa_pipe =
talloc_steal(domain, state->lsa_pipe);
talloc_free(domain->lsa_policy);
domain->lsa_policy =
talloc_steal(domain, state->lsa_policy);
domain->initialized = True;
}
talloc_free(c);
return status;
}
NTSTATUS wb_init_domain(struct wbsrv_domain *domain,
struct event_context *event_ctx,
struct messaging_context *messaging_ctx)
{
struct composite_context *c =
wb_init_domain_send(domain, event_ctx, messaging_ctx);
return wb_init_domain_recv(c);
}

4
source/winbind/wb_samba3_cmd.c
View File

@@ -87,7 +87,7 @@ NTSTATUS wbsrv_samba3_check_machacc(struct wbsrv_samba3_call *s3call)
DEBUG(5, ("wbsrv_samba3_check_machacc called\n")); DEBUG(5, ("wbsrv_samba3_check_machacc called\n"));
ctx = wb_get_netlogon_pipe_send(s3call->call); ctx = wb_cmd_checkmachacc_send(s3call->call);
NT_STATUS_HAVE_NO_MEMORY(ctx); NT_STATUS_HAVE_NO_MEMORY(ctx);
ctx->async.fn = checkmachacc_recv_creds; ctx->async.fn = checkmachacc_recv_creds;
@@ -103,7 +103,7 @@ static void checkmachacc_recv_creds(struct composite_context *ctx)
struct wbsrv_samba3_call); struct wbsrv_samba3_call);
NTSTATUS status; NTSTATUS status;
status = wb_get_netlogon_pipe_recv(ctx); status = wb_cmd_checkmachacc_recv(ctx);
if (NT_STATUS_IS_OK(status)) { if (NT_STATUS_IS_OK(status)) {
s3call->response.result = WINBINDD_OK; s3call->response.result = WINBINDD_OK;
} else { } else {

14
source/winbind/wb_server.h
View File

@@ -36,16 +36,28 @@ struct wbsrv_service {
struct wbsrv_domain *domains; struct wbsrv_domain *domains;
}; };
struct wbsrv_samconn {
struct wbsrv_domain *domain;
void *private_data;
struct composite_context (*seqnum_send)(struct wbsrv_samconn *);
NTSTATUS (*seqnum_recv)(struct composite_context *, uint64_t *);
};
struct wbsrv_domain { struct wbsrv_domain {
struct wbsrv_domain *next, *prev; struct wbsrv_domain *next, *prev;
BOOL initialized;
const char *name; const char *name;
const struct dom_sid *sid; const struct dom_sid *sid;
struct dcerpc_pipe *lsa_pipe; struct dcerpc_pipe *lsa_pipe;
struct policy_handle *lsa_policy;
struct dcerpc_pipe *netlogon_auth2_pipe; struct dcerpc_pipe *netlogon_auth2_pipe;
struct cli_credentials *schannel_creds;
struct dcerpc_pipe *netlogon_pipe; struct dcerpc_pipe *netlogon_pipe;
struct cli_credentials *schannel_creds;
}; };
/* /*