r11095: Implement wb_getuserdomgroups.

Tridge, if you have the time, you might want to look at a problem I'm having
with unix domain stream sockets. From a comment in this commit:

	/* Using composite_trigger_error here causes problems with the client
	 * socket. Linux 2.6.8 gives me a ECONNRESET on the next read after
	 * writing the reply when I don't wait the 100 milliseconds. */

This is in winbind/wb_cmd_userdomgroups.c:93.

The problem I have is that I can not *immediately* send an error reply to the
client because the next receive fails. Waiting 100 milliseconds helps. It
might also be a problem with epoll(), I don't really know.

I'd appreciate if you took a brief look at this, maybe I'm doing something
wrong.

Thanks,

Volker
(This used to be commit 3e535cce743710a68a4264e4f66e9c0c4d6770c6)

1 files changed, 164 insertions, 0 deletions

diff --git a/source4/winbind/wb_cmd_userdomgroups.c b/source4/winbind/wb_cmd_userdomgroups.c
new file mode 100644
index 0000000000..ea2db9877f
--- /dev/null
+++ b/source4/winbind/wb_cmd_userdomgroups.c
@@ -0,0 +1,164 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   Command backend for wbinfo --user-domgroups
+
+   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.
+*/
+
+#include "includes.h"
+#include "libcli/composite/composite.h"
+#include "winbind/wb_server.h"
+#include "smbd/service_stream.h"
+#include "lib/events/events.h"
+#include "librpc/gen_ndr/ndr_security.h"
+
+struct cmd_userdomgroups_state {
+	struct composite_context *ctx;
+	struct wbsrv_domain *domain;
+	uint32_t user_rid;
+	int num_rids;
+	uint32_t *rids;
+};
+
+static void composite_trigger_now(struct event_context *ev,
+				  struct timed_event *te,
+				  struct timeval t, void *ptr)
+{
+	struct composite_context *c =
+		talloc_get_type(ptr, struct composite_context);
+	if (NT_STATUS_IS_OK(c->status)) {
+		c->state = COMPOSITE_STATE_ERROR;
+	} else {
+		c->state = COMPOSITE_STATE_DONE;
+	}
+		
+	if (c->async.fn) {
+		c->async.fn(c);
+	}
+}
+
+
+static struct composite_context *userdomgroups_send_req(void *p);
+static NTSTATUS userdomgroups_recv_req(struct composite_context *ctx, void *p);
+
+struct composite_context *wb_cmd_userdomgroups_send(struct wbsrv_call *call,
+						    const struct dom_sid *sid)
+{
+	struct cmd_userdomgroups_state *state;
+	struct wbsrv_service *service = call->wbconn->listen_socket->service;
+
+	state = talloc(NULL, struct cmd_userdomgroups_state);
+	state->domain = service->domains;
+
+	if (dom_sid_in_domain(state->domain->sid, sid)) {
+		state->user_rid = sid->sub_auths[sid->num_auths-1];
+		state->ctx = wb_queue_domain_send(state, state->domain,
+						  call->event_ctx,
+						  call->wbconn->conn->msg_ctx,
+						  userdomgroups_send_req,
+						  userdomgroups_recv_req,
+						  state);
+		if (state->ctx == NULL) goto failed;
+		state->ctx->private_data = state;
+		return state->ctx;
+	}
+
+	state->ctx = talloc(state, struct composite_context);
+	if (state->ctx == NULL) goto failed;
+	state->ctx->state = COMPOSITE_STATE_IN_PROGRESS;
+	state->ctx->async.fn = NULL;
+	state->ctx->event_ctx = call->event_ctx;
+	state->ctx->status = NT_STATUS_NO_SUCH_USER;
+	state->ctx->private_data = state;
+
+	/* Using composite_trigger_error here causes problems with the client
+	 * socket. Linux 2.6.8 gives me a ECONNRESET on the next read after
+	 * writing the reply when I don't wait the 100 milliseconds. */
+	
+	event_add_timed(state->ctx->event_ctx, state->ctx,
+			timeval_current_ofs(0, 100000),
+			composite_trigger_now, state->ctx);
+	return state->ctx;
+
+ failed:
+	talloc_free(state);
+	return NULL;
+}
+
+static struct composite_context *userdomgroups_send_req(void *p)
+{
+	struct cmd_userdomgroups_state *state =
+		talloc_get_type(p, struct cmd_userdomgroups_state);
+
+	return wb_samr_userdomgroups_send(state->domain->samr_pipe,
+					  state->domain->domain_handle,
+					  state->user_rid);
+}
+
+static NTSTATUS userdomgroups_recv_req(struct composite_context *ctx, void *p)
+{
+	struct cmd_userdomgroups_state *state =
+		talloc_get_type(p, struct cmd_userdomgroups_state);
+
+	return wb_samr_userdomgroups_recv(ctx, state, &state->num_rids,
+					  &state->rids);
+}
+
+NTSTATUS wb_cmd_userdomgroups_recv(struct composite_context *c,
+				   TALLOC_CTX *mem_ctx,
+				   int *num_sids, struct dom_sid ***sids)
+{
+	struct cmd_userdomgroups_state *state =
+		talloc_get_type(c->private_data,
+				struct cmd_userdomgroups_state);
+	int i;
+	NTSTATUS status;
+
+	status = composite_wait(c);
+	if (!NT_STATUS_IS_OK(status)) goto done;
+
+	*num_sids = state->num_rids;
+	*sids = talloc_array(mem_ctx, struct dom_sid *, state->num_rids);
+	if (*sids == NULL) {
+		status = NT_STATUS_NO_MEMORY;
+		goto done;
+	}
+
+	for (i=0; i<state->num_rids; i++) {
+		(*sids)[i] = dom_sid_add_rid((*sids), state->domain->sid,
+					     state->rids[i]);
+		if ((*sids)[i] == NULL) {
+			status = NT_STATUS_NO_MEMORY;
+			goto done;
+		}
+	}
+
+done:
+	talloc_free(state);
+	return status;
+}
+
+NTSTATUS wb_cmd_userdomgroups(struct wbsrv_call *call,
+			      const struct dom_sid *sid,
+			      TALLOC_CTX *mem_ctx, int *num_sids,
+			      struct dom_sid ***sids)
+{
+	struct composite_context *c =
+		wb_cmd_userdomgroups_send(call, sid);
+	return wb_cmd_userdomgroups_recv(c, mem_ctx, num_sids, sids);
+}