s3: Convert WINBINDD_PAM_LOGOFF to the new async API

4 files changed, 148 insertions, 68 deletions

diff --git a/source3/winbindd/winbindd.c b/source3/winbindd/winbindd.c
index cc273eb50e..3bd2ad7c09 100644
--- a/source3/winbindd/winbindd.c
+++ b/source3/winbindd/winbindd.c
@@ -444,7 +444,6 @@ static struct winbindd_dispatch_table {
 
 	/* PAM auth functions */
 
-	{ WINBINDD_PAM_LOGOFF, winbindd_pam_logoff, "PAM_LOGOFF" },
 	{ WINBINDD_PAM_CHNG_PSWD_AUTH_CRAP, winbindd_pam_chng_pswd_auth_crap, "CHNG_PSWD_AUTH_CRAP" },
 
 	/* Enumeration functions */
@@ -551,6 +550,8 @@ static struct winbindd_async_dispatch_table async_nonpriv_table[] = {
 	  winbindd_ping_dc_send, winbindd_ping_dc_recv },
 	{ WINBINDD_PAM_AUTH, "PAM_AUTH",
 	  winbindd_pam_auth_send, winbindd_pam_auth_recv },
+	{ WINBINDD_PAM_LOGOFF, "PAM_LOGOFF",
+	  winbindd_pam_logoff_send, winbindd_pam_logoff_recv },
 	{ WINBINDD_PAM_CHAUTHTOK, "PAM_CHAUTHTOK",
 	  winbindd_pam_chauthtok_send, winbindd_pam_chauthtok_recv },
 
diff --git a/source3/winbindd/winbindd_pam.c b/source3/winbindd/winbindd_pam.c
index 61c8c298f1..6aeeb2d143 100644
--- a/source3/winbindd/winbindd_pam.c
+++ b/source3/winbindd/winbindd_pam.c
@@ -2051,72 +2051,6 @@ process_result:
 	return NT_STATUS_IS_OK(result) ? WINBINDD_OK : WINBINDD_ERROR;
 }
 
-void winbindd_pam_logoff(struct winbindd_cli_state *state)
-{
-	struct winbindd_domain *domain;
-	fstring name_domain, user;
-	uid_t caller_uid = (uid_t)-1;
-	uid_t request_uid = state->request->data.logoff.uid;
-
-	/* Ensure null termination */
-	state->request->data.logoff.user
-		[sizeof(state->request->data.logoff.user)-1]='\0';
-
-	state->request->data.logoff.krb5ccname
-		[sizeof(state->request->data.logoff.krb5ccname)-1]='\0';
-
-	DEBUG(3, ("[%5lu]: pam logoff %s\n", (unsigned long)state->pid,
-		state->request->data.logoff.user));
-
-	if (request_uid == (uid_t)-1) {
-		goto failed;
-	}
-
-	if (!canonicalize_username(state->request->data.logoff.user, name_domain, user)) {
-		goto failed;
-	}
-
-	if ((domain = find_auth_domain(state->request->flags,
-				       name_domain)) == NULL) {
-		goto failed;
-	}
-
-	if ((sys_getpeereid(state->sock, &caller_uid)) != 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 */
-			state->request->data.logoff.uid = request_uid;
-			break;
-		default:
-			if (caller_uid != request_uid) {
-				DEBUG(1,("winbindd_pam_logoff: caller requested invalid uid\n"));
-				goto failed;
-			}
-			state->request->data.logoff.uid = caller_uid;
-			break;
-	}
-
-	sendto_domain(state, domain);
-	return;
-
- failed:
-	set_auth_errors(state->response, NT_STATUS_NO_SUCH_USER);
-	DEBUG(5, ("Pam Logoff for %s returned %s "
-		  "(PAM: %d)\n",
-		  state->request->data.logoff.user,
-		  state->response->data.auth.nt_status_string,
-		  state->response->data.auth.pam_error));
-	request_error(state);
-	return;
-}
-
 enum winbindd_result winbindd_dual_pam_logoff(struct winbindd_domain *domain,
 					      struct winbindd_cli_state *state)
 {
diff --git a/source3/winbindd/winbindd_pam_logoff.c b/source3/winbindd/winbindd_pam_logoff.c
new file mode 100644
index 0000000000..9cf7f17d13
--- /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);
+}
diff --git a/source3/winbindd/winbindd_proto.h b/source3/winbindd/winbindd_proto.h
index c72a1fe81d..e47f300ab7 100644
--- a/source3/winbindd/winbindd_proto.h
+++ b/source3/winbindd/winbindd_proto.h
@@ -388,7 +388,6 @@ enum winbindd_result winbindd_dual_pam_auth_crap(struct winbindd_domain *domain,
 						 struct winbindd_cli_state *state) ;
 enum winbindd_result winbindd_dual_pam_chauthtok(struct winbindd_domain *contact_domain,
 						 struct winbindd_cli_state *state);
-void winbindd_pam_logoff(struct winbindd_cli_state *state);
 enum winbindd_result winbindd_dual_pam_logoff(struct winbindd_domain *domain,
 					      struct winbindd_cli_state *state) ;
 void winbindd_pam_chng_pswd_auth_crap(struct winbindd_cli_state *state);
@@ -872,4 +871,11 @@ struct tevent_req *winbindd_pam_chauthtok_send(
 NTSTATUS winbindd_pam_chauthtok_recv(struct tevent_req *req,
 				     struct winbindd_response *response);
 
+struct tevent_req *winbindd_pam_logoff_send(TALLOC_CTX *mem_ctx,
+					    struct tevent_context *ev,
+					    struct winbindd_cli_state *cli,
+					    struct winbindd_request *request);
+NTSTATUS winbindd_pam_logoff_recv(struct tevent_req *req,
+				  struct winbindd_response *response);
+
 #endif /*  _WINBINDD_PROTO_H_  */