s3:winbind: Add async next_pwent

3 files changed, 163 insertions, 0 deletions

diff --git a/source3/winbindd/wb_next_pwent.c b/source3/winbindd/wb_next_pwent.c
new file mode 100644
index 0000000000..25ab7b38d3
--- /dev/null
+++ b/source3/winbindd/wb_next_pwent.c
@@ -0,0 +1,150 @@
+/*
+   Unix SMB/CIFS implementation.
+   async next_pwent
+   Copyright (C) Volker Lendecke 2009
+
+   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 "winbindd.h"
+#include "librpc/gen_ndr/cli_wbint.h"
+
+struct wb_next_pwent_state {
+	struct tevent_context *ev;
+	struct getpwent_state *gstate;
+	struct winbindd_pw *pw;
+};
+
+static void wb_next_pwent_fetch_done(struct tevent_req *subreq);
+static void wb_next_pwent_fill_done(struct tevent_req *subreq);
+
+struct tevent_req *wb_next_pwent_send(TALLOC_CTX *mem_ctx,
+				      struct tevent_context *ev,
+				      struct getpwent_state *gstate,
+				      struct winbindd_pw *pw)
+{
+	struct tevent_req *req, *subreq;
+	struct wb_next_pwent_state *state;
+
+	req = tevent_req_create(mem_ctx, &state, struct wb_next_pwent_state);
+	if (req == NULL) {
+		return NULL;
+	}
+	state->ev = ev;
+	state->gstate = gstate;
+	state->pw = pw;
+
+	if (state->gstate->next_user >= state->gstate->num_users) {
+		TALLOC_FREE(state->gstate->users);
+
+		if (state->gstate->domain == NULL) {
+			state->gstate->domain = domain_list();
+		} else {
+			state->gstate->domain = state->gstate->domain->next;
+		}
+
+		if (state->gstate->domain == NULL) {
+			tevent_req_nterror(req, NT_STATUS_NO_MORE_ENTRIES);
+			return tevent_req_post(req, ev);
+		}
+		subreq = wb_query_user_list_send(state, state->ev,
+						 state->gstate->domain);
+		if (tevent_req_nomem(subreq, req)) {
+			return tevent_req_post(req, ev);
+		}
+		tevent_req_set_callback(subreq, wb_next_pwent_fetch_done, req);
+		return req;
+	}
+
+	subreq = wb_fill_pwent_send(
+		state, state->ev,
+		&state->gstate->users[state->gstate->next_user],
+		state->pw);
+	if (tevent_req_nomem(subreq, req)) {
+		return tevent_req_post(req, ev);
+	}
+	tevent_req_set_callback(subreq, wb_next_pwent_fill_done, req);
+	return req;
+}
+
+static void wb_next_pwent_fetch_done(struct tevent_req *subreq)
+{
+	struct tevent_req *req = tevent_req_callback_data(
+		subreq, struct tevent_req);
+	struct wb_next_pwent_state *state = tevent_req_data(
+		req, struct wb_next_pwent_state);
+	NTSTATUS status;
+
+	status = wb_query_user_list_recv(subreq, state->gstate,
+					 &state->gstate->num_users,
+					 &state->gstate->users);
+	TALLOC_FREE(subreq);
+	if (!NT_STATUS_IS_OK(status)) {
+		/* Ignore errors here, just log it */
+		DEBUG(10, ("query_user_list for domain %s returned %s\n",
+			   state->gstate->domain->name,
+			   nt_errstr(status)));
+		state->gstate->num_users = 0;
+	}
+
+	if (state->gstate->num_users == 0) {
+		state->gstate->domain = state->gstate->domain->next;
+		if (state->gstate->domain == NULL) {
+			tevent_req_nterror(req, NT_STATUS_NO_MORE_ENTRIES);
+			return;
+		}
+		subreq = wb_query_user_list_send(state, state->ev,
+						 state->gstate->domain);
+		if (tevent_req_nomem(subreq, req)) {
+			return;
+		}
+		tevent_req_set_callback(subreq, wb_next_pwent_fetch_done, req);
+		return;
+	}
+
+	state->gstate->next_user = 0;
+
+	subreq = wb_fill_pwent_send(
+		state, state->ev,
+		&state->gstate->users[state->gstate->next_user],
+		state->pw);
+	if (tevent_req_nomem(subreq, req)) {
+		return;
+	}
+	tevent_req_set_callback(subreq, wb_next_pwent_fill_done, req);
+}
+
+static void wb_next_pwent_fill_done(struct tevent_req *subreq)
+{
+	struct tevent_req *req = tevent_req_callback_data(
+		subreq, struct tevent_req);
+	struct wb_next_pwent_state *state = tevent_req_data(
+		req, struct wb_next_pwent_state);
+	NTSTATUS status;
+
+	status = wb_fill_pwent_recv(subreq);
+	TALLOC_FREE(subreq);
+	if (!NT_STATUS_IS_OK(status)) {
+		tevent_req_nterror(req, status);
+		return;
+	}
+	state->gstate->next_user += 1;
+	tevent_req_done(req);
+}
+
+NTSTATUS wb_next_pwent_recv(struct tevent_req *req)
+{
+	return tevent_req_simple_recv_ntstatus(req);
+}
diff --git a/source3/winbindd/winbindd.h b/source3/winbindd/winbindd.h
index 773496e8ad..454fea70e6 100644
--- a/source3/winbindd/winbindd.h
+++ b/source3/winbindd/winbindd.h
@@ -79,6 +79,13 @@ struct getent_state {
 	fstring domain_name;
 };
 
+struct getpwent_state {
+	struct winbindd_domain *domain;
+	int next_user;
+	int num_users;
+	struct wbint_userinfo *users;
+};
+
 /* Storage for cached getpwent() user entries */
 
 struct getpwent_user {
diff --git a/source3/winbindd/winbindd_proto.h b/source3/winbindd/winbindd_proto.h
index 58a46b5215..f66becae33 100644
--- a/source3/winbindd/winbindd_proto.h
+++ b/source3/winbindd/winbindd_proto.h
@@ -862,5 +862,11 @@ struct tevent_req *wb_fill_pwent_send(TALLOC_CTX *mem_ctx,
 				      struct winbindd_pw *pw);
 NTSTATUS wb_fill_pwent_recv(struct tevent_req *req);
 
+struct tevent_req *wb_next_pwent_send(TALLOC_CTX *mem_ctx,
+				      struct tevent_context *ev,
+				      struct getpwent_state *gstate,
+				      struct winbindd_pw *pw);
+NTSTATUS wb_next_pwent_recv(struct tevent_req *req);
+
 
 #endif /*  _WINBINDD_PROTO_H_  */