1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
4 This file is part of systemd.
6 Copyright 2010 Lennart Poettering
7 Copyright 2013 Daniel Mack
8 Copyright 2014 Kay Sievers
10 systemd is free software; you can redistribute it and/or modify it
11 under the terms of the GNU Lesser General Public License as published by
12 the Free Software Foundation; either version 2.1 of the License, or
13 (at your option) any later version.
15 systemd is distributed in the hope that it will be useful, but
16 WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 Lesser General Public License for more details.
20 You should have received a copy of the GNU Lesser General Public License
21 along with systemd; If not, see <http://www.gnu.org/licenses/>.
28 #include "bus-internal.h"
29 #include "bus-message.h"
31 #include "bus-match.h"
32 #include "synthesize.h"
34 int synthetic_driver_send(sd_bus
*b
, sd_bus_message
*m
) {
40 r
= bus_message_append_sender(m
, "org.freedesktop.DBus");
44 r
= bus_seal_synthetic_message(b
, m
);
48 return sd_bus_send(b
, m
, NULL
);
51 int synthetic_reply_method_error(sd_bus_message
*call
, const sd_bus_error
*e
) {
52 _cleanup_bus_message_unref_ sd_bus_message
*m
= NULL
;
57 if (call
->header
->flags
& BUS_MESSAGE_NO_REPLY_EXPECTED
)
60 r
= sd_bus_message_new_method_error(call
, &m
, e
);
64 return synthetic_driver_send(call
->bus
, m
);
67 int synthetic_reply_method_errorf(sd_bus_message
*call
, const char *name
, const char *format
, ...) {
68 _cleanup_bus_error_free_ sd_bus_error error
= SD_BUS_ERROR_NULL
;
72 bus_error_setfv(&error
, name
, format
, ap
);
75 return synthetic_reply_method_error(call
, &error
);
78 int synthetic_reply_method_errno(sd_bus_message
*call
, int error
, const sd_bus_error
*p
) {
79 _cleanup_bus_error_free_ sd_bus_error berror
= SD_BUS_ERROR_NULL
;
83 if (call
->header
->flags
& BUS_MESSAGE_NO_REPLY_EXPECTED
)
86 if (sd_bus_error_is_set(p
))
87 return synthetic_reply_method_error(call
, p
);
89 sd_bus_error_set_errno(&berror
, error
);
91 return synthetic_reply_method_error(call
, &berror
);
94 int synthetic_reply_method_errnof(sd_bus_message
*call
, int error
, const char *format
, ...) {
95 _cleanup_bus_error_free_ sd_bus_error berror
= SD_BUS_ERROR_NULL
;
100 if (call
->header
->flags
& BUS_MESSAGE_NO_REPLY_EXPECTED
)
103 va_start(ap
, format
);
104 sd_bus_error_set_errnofv(&berror
, error
, format
, ap
);
107 return synthetic_reply_method_error(call
, &berror
);
110 int synthetic_reply_method_return(sd_bus_message
*call
, const char *types
, ...) {
111 _cleanup_bus_message_unref_ sd_bus_message
*m
= NULL
;
116 if (call
->header
->flags
& BUS_MESSAGE_NO_REPLY_EXPECTED
)
119 r
= sd_bus_message_new_method_return(call
, &m
);
123 if (!isempty(types
)) {
127 r
= bus_message_append_ap(m
, types
, ap
);
133 return synthetic_driver_send(call
->bus
, m
);
136 int synthetic_reply_method_return_strv(sd_bus_message
*call
, char **l
) {
137 _cleanup_bus_message_unref_ sd_bus_message
*m
= NULL
;
142 if (call
->header
->flags
& BUS_MESSAGE_NO_REPLY_EXPECTED
)
145 r
= sd_bus_message_new_method_return(call
, &m
);
147 return synthetic_reply_method_errno(call
, r
, NULL
);
149 r
= sd_bus_message_append_strv(m
, l
);
151 return synthetic_reply_method_errno(call
, r
, NULL
);
153 return synthetic_driver_send(call
->bus
, m
);
156 int synthesize_name_acquired(Proxy
*p
, sd_bus
*a
, sd_bus
*b
, sd_bus_message
*m
) {
157 _cleanup_bus_message_unref_ sd_bus_message
*n
= NULL
;
158 const char *name
, *old_owner
, *new_owner
;
166 /* If we get NameOwnerChanged for our own name, we need to
167 * synthesize NameLost/NameAcquired, since socket clients need
168 * that, even though it is obsoleted on kdbus */
173 if (!sd_bus_message_is_signal(m
, "org.freedesktop.DBus", "NameOwnerChanged") ||
174 !streq_ptr(m
->path
, "/org/freedesktop/DBus") ||
175 !streq_ptr(m
->sender
, "org.freedesktop.DBus"))
178 r
= sd_bus_message_read(m
, "sss", &name
, &old_owner
, &new_owner
);
182 r
= sd_bus_message_rewind(m
, true);
186 if (streq(old_owner
, a
->unique_name
)) {
188 r
= sd_bus_message_new_signal(
191 "/org/freedesktop/DBus",
192 "org.freedesktop.DBus",
195 } else if (streq(new_owner
, a
->unique_name
)) {
197 r
= sd_bus_message_new_signal(
200 "/org/freedesktop/DBus",
201 "org.freedesktop.DBus",
209 r
= sd_bus_message_append(n
, "s", name
);
213 r
= bus_message_append_sender(n
, "org.freedesktop.DBus");
217 r
= sd_bus_message_set_destination(n
, a
->unique_name
);
221 r
= bus_seal_synthetic_message(b
, n
);
225 return sd_bus_send(b
, n
, NULL
);