1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
|
/*
* Copyright (C) 2023 Igalia S.L.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "WPEDRMSessionLogind.h"
#if ENABLE(JOURNALD_LOG)
#include <errno.h>
#include <gio/gunixfdlist.h>
#include <sys/stat.h>
#include <sys/sysmacros.h>
#include <systemd/sd-login.h>
#include <unistd.h>
#include <wtf/Seconds.h>
namespace WPE {
namespace DRM {
std::unique_ptr<Session> SessionLogind::create()
{
GUniqueOutPtr<char> session;
int retval = sd_pid_get_session(getpid(), &session.outPtr());
if (retval < 0) {
if (retval != -ENODATA)
return nullptr;
// Not inside a systemd session, look if there is a suitable one.
if (sd_uid_get_display(getuid(), &session.outPtr()) < 0)
return nullptr;
}
GUniqueOutPtr<char> seat;
if (sd_session_get_seat(session.get(), &seat.outPtr()) < 0)
return nullptr;
GUniquePtr<char> path(g_strdup_printf("/org/freedesktop/login1/session/%s", session.get()));
GRefPtr<GDBusProxy> sessionProxy = adoptGRef(g_dbus_proxy_new_for_bus_sync(G_BUS_TYPE_SYSTEM, G_DBUS_PROXY_FLAGS_DO_NOT_AUTO_START, nullptr, "org.freedesktop.login1", path.get(), "org.freedesktop.login1.Session", nullptr, nullptr));
return makeUnique<SessionLogind>(WTFMove(sessionProxy), GUniquePtr<char>(seat.release()));
}
SessionLogind::SessionLogind(GRefPtr<GDBusProxy>&& sessionProxy, GUniquePtr<char>&& seatID)
: m_sessionProxy(WTFMove(sessionProxy))
, m_seatID(WTFMove(seatID))
{
GUniqueOutPtr<GError> error;
GRefPtr<GVariant> result = adoptGRef(g_dbus_proxy_call_sync(m_sessionProxy.get(), "TakeControl", g_variant_new("(b)", FALSE),
G_DBUS_CALL_FLAGS_NONE, -1, nullptr, &error.outPtr()));
if (!result) {
g_warning("Failed to take control of session: %s", error->message);
return;
}
m_inControl = true;
g_dbus_proxy_call(m_sessionProxy.get(), "Activate", nullptr, G_DBUS_CALL_FLAGS_NONE, -1, nullptr, nullptr, nullptr);
}
SessionLogind::~SessionLogind()
{
if (!m_inControl)
return;
g_dbus_proxy_call(m_sessionProxy.get(), "ReleaseControl", nullptr, G_DBUS_CALL_FLAGS_NONE, -1, nullptr, nullptr, nullptr);
}
int SessionLogind::openDevice(const char* path, int flags)
{
if (!m_inControl)
return Session::openDevice(path, flags);
struct stat st;
int retval = stat(path, &st);
if (retval < 0)
return -1;
if (!S_ISCHR(st.st_mode)) {
errno = ENODEV;
return -1;
}
GRefPtr<GUnixFDList> fdList;
GUniqueOutPtr<GError> error;
GRefPtr<GVariant> result = adoptGRef(g_dbus_proxy_call_with_unix_fd_list_sync(m_sessionProxy.get(), "TakeDevice", g_variant_new("(uu)", major(st.st_rdev), minor(st.st_rdev)),
G_DBUS_CALL_FLAGS_NONE, -1, nullptr, &fdList.outPtr(), nullptr, &error.outPtr()));
if (!result) {
g_warning("Session failed to take device %s: %s", path, error->message);
errno = ENODEV;
return -1;
}
int handler;
g_variant_get(result.get(), "(hb)", &handler, nullptr);
return g_unix_fd_list_get(fdList.get(), handler, nullptr);
}
int SessionLogind::closeDevice(int deviceID)
{
if (!m_inControl)
return Session::closeDevice(deviceID);
struct stat st;
int retval = fstat(deviceID, &st);
if (retval < 0)
return -1;
if (!S_ISCHR(st.st_mode)) {
errno = ENODEV;
return -1;
}
GUniqueOutPtr<GError> error;
GRefPtr<GVariant> result = adoptGRef(g_dbus_proxy_call_sync(m_sessionProxy.get(), "ReleaseDevice", g_variant_new("(uu)", major(st.st_rdev), minor(st.st_rdev)),
G_DBUS_CALL_FLAGS_NONE, -1, nullptr, &error.outPtr()));
if (!result) {
g_warning("Session failed to release device %d: %s", deviceID, error->message);
errno = ENODEV;
return -1;
}
return 0;
}
} // namespace DRM
} // namespace WPE
#endif // ENABLE(JOURNALD_LOG)
|
