s3: Convert WINBINDD_PAM_LOGOFF to the new async API

1 files changed, 139 insertions, 0 deletions

diff --git a/source3/winbindd/winbindd_pam_logoff.c b/source3/winbindd/winbindd_pam_logoff.c
new file mode 100644
index 00000000000..9cf7f17d134
--- /dev/null
+++ b/source3/winbindd/winbindd_pam_logoff.c
@@ -0,0 +1,139 @@
+/*
+   Unix SMB/CIFS implementation.
+   async implementation of WINBINDD_PAM_LOGOFF
+   Copyright (C) Volker Lendecke 2010
+
+   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"
+
+struct winbindd_pam_logoff_state {
+	struct winbindd_response *response;
+};
+
+static void winbindd_pam_logoff_done(struct tevent_req *subreq);
+
+struct tevent_req *winbindd_pam_logoff_send(TALLOC_CTX *mem_ctx,
+					    struct tevent_context *ev,
+					    struct winbindd_cli_state *cli,
+					    struct winbindd_request *request)
+{
+	struct tevent_req *req, *subreq;
+	struct winbindd_pam_logoff_state *state;
+	struct winbindd_domain *domain;
+	fstring name_domain, user;
+	uid_t caller_uid;
+	int res;
+
+	req = tevent_req_create(mem_ctx, &state,
+				struct winbindd_pam_logoff_state);
+	if (req == NULL) {
+		return NULL;
+	}
+
+	/* Ensure null termination */
+	/* Ensure null termination */
+	request->data.logoff.user[sizeof(request->data.logoff.user)-1]='\0';
+	request->data.logoff.krb5ccname[
+		sizeof(request->data.logoff.krb5ccname)-1]='\0';
+
+	DEBUG(3, ("[%5lu]: pam auth %s\n", (unsigned long)cli->pid,
+		  request->data.auth.user));
+
+	if (request->data.logoff.uid == (uid_t)-1) {
+		goto failed;
+	}
+
+	if (!canonicalize_username(request->data.logoff.user, name_domain,
+				   user)) {
+		goto failed;
+	}
+
+	domain = find_auth_domain(request->flags, name_domain);
+	if (domain == NULL) {
+		goto failed;
+	}
+
+	caller_uid = (uid_t)-1;
+
+	res = sys_getpeereid(cli->sock, &caller_uid);
+	if (res != 0) {
+		DEBUG(1,("winbindd_pam_logoff: failed to check peerid: %s\n",
+			strerror(errno)));
+		goto failed;
+	}
+
+	switch (caller_uid) {
+	case -1:
+		goto failed;
+	case 0:
+		/* root must be able to logoff any user - gd */
+		break;
+	default:
+		if (caller_uid != request->data.logoff.uid) {
+			DEBUG(1,("winbindd_pam_logoff: caller requested "
+				 "invalid uid\n"));
+			goto failed;
+		}
+		break;
+	}
+
+	subreq = wb_domain_request_send(state, winbind_event_context(), domain,
+					request);
+	if (tevent_req_nomem(subreq, req)) {
+		return tevent_req_post(req, ev);
+	}
+	tevent_req_set_callback(subreq, winbindd_pam_logoff_done, req);
+	return req;
+
+failed:
+	tevent_req_nterror(req, NT_STATUS_NO_SUCH_USER);
+	return tevent_req_post(req, ev);
+}
+
+static void winbindd_pam_logoff_done(struct tevent_req *subreq)
+{
+	struct tevent_req *req = tevent_req_callback_data(
+		subreq, struct tevent_req);
+	struct winbindd_pam_logoff_state *state = tevent_req_data(
+		req, struct winbindd_pam_logoff_state);
+	int res, err;
+
+	res = wb_domain_request_recv(subreq, state, &state->response, &err);
+	TALLOC_FREE(subreq);
+	if (res == -1) {
+		tevent_req_nterror(req, map_nt_error_from_unix(err));
+		return;
+	}
+	tevent_req_done(req);
+}
+
+NTSTATUS winbindd_pam_logoff_recv(struct tevent_req *req,
+				  struct winbindd_response *response)
+{
+	struct winbindd_pam_logoff_state *state = tevent_req_data(
+		req, struct winbindd_pam_logoff_state);
+	NTSTATUS status;
+
+	if (tevent_req_is_nterror(req, &status)) {
+		set_auth_errors(response, status);
+		return status;
+	}
+	*response = *state->response;
+	response->result = WINBINDD_PENDING;
+	state->response = talloc_move(response, &state->response);
+	return NT_STATUS(response->data.auth.nt_status);
+}