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  • Committer: Package Import Robot
  • Author(s): Tollef Fog Heen, Tollef Fog Heen, Michael Biebl
  • Date: 2012-04-03 19:59:17 UTC
  • mfrom: (1.1.10) (6.1.3 experimental)
  • Revision ID: package-import@ubuntu.com-20120403195917-l532urrbg4pkreas
Tags: 44-1
http://bugs.debian.org/664364
http://bugs.debian.org/663219
http://bugs.debian.org/663323
[ Tollef Fog Heen ]
* New upstream version.
  - Backport 3492207: journal: PAGE_SIZE is not known on ppc and other
    archs
  - Backport 5a2a2a1: journal: react with immediate rotation to a couple
    of more errors
  - Backport 693ce21: util: never follow symlinks in rm_rf_children()
    Fixes CVE-2012-1174, closes: #664364
* Drop output message from init-functions hook, it's pointless.
* Only rmdir /lib/init/rw if it exists.
* Explicitly order debian-fixup before sysinit.target to prevent a
  possible race condition with the creation of sockets.  Thanks to
  Michael Biebl for debugging this.
* Always restart the initctl socket on upgrades, to mask sysvinit
  removing it.

[ Michael Biebl ]
* Remove workaround for non-interactive sessions from pam config again.
* Create compat /dev/initctl symlink in case we are upgrading from a system
  running a newer version of sysvinit (using /run/initctl) and sysvinit is
  replaced with systemd-sysv during the upgrade. Closes: #663219
* Install new man pages.
* Build-Depend on valac (>= 0.12) instead of valac-0.12. Closes: #663323

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Lines of Context:
src/login/logind-seat-dbus.c
 
1
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
 
2
 
 
3
/***
 
4
  This file is part of systemd.
 
5
 
 
6
  Copyright 2011 Lennart Poettering
 
7
 
 
8
  systemd is free software; you can redistribute it and/or modify it
 
9
  under the terms of the GNU General Public License as published by
 
10
  the Free Software Foundation; either version 2 of the License, or
 
11
  (at your option) any later version.
 
12
 
 
13
  systemd is distributed in the hope that it will be useful, but
 
14
  WITHOUT ANY WARRANTY; without even the implied warranty of
 
15
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 
16
  General Public License for more details.
 
17
 
 
18
  You should have received a copy of the GNU General Public License
 
19
  along with systemd; If not, see <http://www.gnu.org/licenses/>.
 
20
***/
 
21
 
 
22
#include <errno.h>
 
23
#include <string.h>
 
24
 
 
25
#include "logind.h"
 
26
#include "logind-seat.h"
 
27
#include "dbus-common.h"
 
28
#include "util.h"
 
29
 
 
30
#define BUS_SEAT_INTERFACE \
 
31
        " <interface name=\"org.freedesktop.login1.Seat\">\n"           \
 
32
        "  <method name=\"Terminate\"/>\n"                              \
 
33
        "  <method name=\"ActivateSession\">\n"                         \
 
34
        "   <arg name=\"id\" type=\"s\"/>\n"                            \
 
35
        "  </method>\n"                                                 \
 
36
        "  <property name=\"Id\" type=\"s\" access=\"read\"/>\n"        \
 
37
        "  <property name=\"ActiveSession\" type=\"so\" access=\"read\"/>\n" \
 
38
        "  <property name=\"CanMultiSession\" type=\"b\" access=\"read\"/>\n" \
 
39
        "  <property name=\"Sessions\" type=\"a(so)\" access=\"read\"/>\n" \
 
40
        "  <property name=\"IdleHint\" type=\"b\" access=\"read\"/>\n"  \
 
41
        "  <property name=\"IdleSinceHint\" type=\"t\" access=\"read\"/>\n" \
 
42
        "  <property name=\"IdleSinceHintMonotonic\" type=\"t\" access=\"read\"/>\n" \
 
43
        " </interface>\n"                                               \
 
44
 
 
45
#define INTROSPECTION                                                   \
 
46
        DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE                       \
 
47
        "<node>\n"                                                      \
 
48
        BUS_SEAT_INTERFACE                                              \
 
49
        BUS_PROPERTIES_INTERFACE                                        \
 
50
        BUS_PEER_INTERFACE                                              \
 
51
        BUS_INTROSPECTABLE_INTERFACE                                    \
 
52
        "</node>\n"
 
53
 
 
54
#define INTERFACES_LIST                              \
 
55
        BUS_GENERIC_INTERFACES_LIST                  \
 
56
        "org.freedesktop.login1.Seat\0"
 
57
 
 
58
static int bus_seat_append_active(DBusMessageIter *i, const char *property, void *data) {
 
59
        DBusMessageIter sub;
 
60
        Seat *s = data;
 
61
        const char *id, *path;
 
62
        char *p = NULL;
 
63
 
 
64
        assert(i);
 
65
        assert(property);
 
66
        assert(s);
 
67
 
 
68
        if (!dbus_message_iter_open_container(i, DBUS_TYPE_STRUCT, NULL, &sub))
 
69
                return -ENOMEM;
 
70
 
 
71
        if (s->active) {
 
72
                id = s->active->id;
 
73
                path = p = session_bus_path(s->active);
 
74
 
 
75
                if (!p)
 
76
                        return -ENOMEM;
 
77
        } else {
 
78
                id = "";
 
79
                path = "/";
 
80
        }
 
81
 
 
82
        if (!dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, &id) ||
 
83
            !dbus_message_iter_append_basic(&sub, DBUS_TYPE_OBJECT_PATH, &path)) {
 
84
                free(p);
 
85
                return -ENOMEM;
 
86
        }
 
87
 
 
88
        free(p);
 
89
 
 
90
        if (!dbus_message_iter_close_container(i, &sub))
 
91
                return -ENOMEM;
 
92
 
 
93
        return 0;
 
94
}
 
95
 
 
96
static int bus_seat_append_sessions(DBusMessageIter *i, const char *property, void *data) {
 
97
        DBusMessageIter sub, sub2;
 
98
        Seat *s = data;
 
99
        Session *session;
 
100
 
 
101
        assert(i);
 
102
        assert(property);
 
103
        assert(s);
 
104
 
 
105
        if (!dbus_message_iter_open_container(i, DBUS_TYPE_ARRAY, "(so)", &sub))
 
106
                return -ENOMEM;
 
107
 
 
108
        LIST_FOREACH(sessions_by_seat, session, s->sessions) {
 
109
                char *p;
 
110
 
 
111
                if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2))
 
112
                        return -ENOMEM;
 
113
 
 
114
                p = session_bus_path(session);
 
115
                if (!p)
 
116
                        return -ENOMEM;
 
117
 
 
118
                if (!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &session->id) ||
 
119
                    !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &p)) {
 
120
                        free(p);
 
121
                        return -ENOMEM;
 
122
                }
 
123
 
 
124
                free(p);
 
125
 
 
126
                if (!dbus_message_iter_close_container(&sub, &sub2))
 
127
                        return -ENOMEM;
 
128
        }
 
129
 
 
130
        if (!dbus_message_iter_close_container(i, &sub))
 
131
                return -ENOMEM;
 
132
 
 
133
        return 0;
 
134
}
 
135
 
 
136
static int bus_seat_append_multi_session(DBusMessageIter *i, const char *property, void *data) {
 
137
        Seat *s = data;
 
138
        dbus_bool_t b;
 
139
 
 
140
        assert(i);
 
141
        assert(property);
 
142
        assert(s);
 
143
 
 
144
        b = seat_can_multi_session(s);
 
145
 
 
146
        if (!dbus_message_iter_append_basic(i, DBUS_TYPE_BOOLEAN, &b))
 
147
                return -ENOMEM;
 
148
 
 
149
        return 0;
 
150
}
 
151
 
 
152
static int bus_seat_append_idle_hint(DBusMessageIter *i, const char *property, void *data) {
 
153
        Seat *s = data;
 
154
        dbus_bool_t b;
 
155
 
 
156
        assert(i);
 
157
        assert(property);
 
158
        assert(s);
 
159
 
 
160
        b = seat_get_idle_hint(s, NULL) > 0;
 
161
        if (!dbus_message_iter_append_basic(i, DBUS_TYPE_BOOLEAN, &b))
 
162
                return -ENOMEM;
 
163
 
 
164
        return 0;
 
165
}
 
166
 
 
167
static int bus_seat_append_idle_hint_since(DBusMessageIter *i, const char *property, void *data) {
 
168
        Seat *s = data;
 
169
        dual_timestamp t;
 
170
        uint64_t k;
 
171
 
 
172
        assert(i);
 
173
        assert(property);
 
174
        assert(s);
 
175
 
 
176
        seat_get_idle_hint(s, &t);
 
177
        k = streq(property, "IdleSinceHint") ? t.realtime : t.monotonic;
 
178
 
 
179
        if (!dbus_message_iter_append_basic(i, DBUS_TYPE_UINT64, &k))
 
180
                return -ENOMEM;
 
181
 
 
182
        return 0;
 
183
}
 
184
 
 
185
static int get_seat_for_path(Manager *m, const char *path, Seat **_s) {
 
186
        Seat *s;
 
187
        char *id;
 
188
 
 
189
        assert(m);
 
190
        assert(path);
 
191
        assert(_s);
 
192
 
 
193
        if (!startswith(path, "/org/freedesktop/login1/seat/"))
 
194
                return -EINVAL;
 
195
 
 
196
        id = bus_path_unescape(path + 29);
 
197
        if (!id)
 
198
                return -ENOMEM;
 
199
 
 
200
        s = hashmap_get(m->seats, id);
 
201
        free(id);
 
202
 
 
203
        if (!s)
 
204
                return -ENOENT;
 
205
 
 
206
        *_s = s;
 
207
        return 0;
 
208
}
 
209
 
 
210
static const BusProperty bus_login_seat_properties[] = {
 
211
        { "Id",                     bus_property_append_string,      "s", offsetof(Seat, id), true },
 
212
        { "ActiveSession",          bus_seat_append_active,       "(so)", 0 },
 
213
        { "CanMultiSession",        bus_seat_append_multi_session,   "b", 0 },
 
214
        { "Sessions",               bus_seat_append_sessions,    "a(so)", 0 },
 
215
        { "IdleHint",               bus_seat_append_idle_hint,       "b", 0 },
 
216
        { "IdleSinceHint",          bus_seat_append_idle_hint_since, "t", 0 },
 
217
        { "IdleSinceHintMonotonic", bus_seat_append_idle_hint_since, "t", 0 },
 
218
        { NULL, }
 
219
};
 
220
 
 
221
static DBusHandlerResult seat_message_dispatch(
 
222
                Seat *s,
 
223
                DBusConnection *connection,
 
224
                DBusMessage *message) {
 
225
 
 
226
        DBusError error;
 
227
        DBusMessage *reply = NULL;
 
228
        int r;
 
229
 
 
230
        assert(s);
 
231
        assert(connection);
 
232
        assert(message);
 
233
 
 
234
        dbus_error_init(&error);
 
235
 
 
236
        if (dbus_message_is_method_call(message, "org.freedesktop.login1.Seat", "Terminate")) {
 
237
 
 
238
                r = seat_stop_sessions(s);
 
239
                if (r < 0)
 
240
                        return bus_send_error_reply(connection, message, NULL, r);
 
241
 
 
242
                reply = dbus_message_new_method_return(message);
 
243
                if (!reply)
 
244
                        goto oom;
 
245
 
 
246
        } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Seat", "ActivateSession")) {
 
247
                const char *name;
 
248
                Session *session;
 
249
 
 
250
                if (!dbus_message_get_args(
 
251
                                    message,
 
252
                                    &error,
 
253
                                    DBUS_TYPE_STRING, &name,
 
254
                                    DBUS_TYPE_INVALID))
 
255
                        return bus_send_error_reply(connection, message, &error, -EINVAL);
 
256
 
 
257
                session = hashmap_get(s->manager->sessions, name);
 
258
                if (!session || session->seat != s)
 
259
                        return bus_send_error_reply(connection, message, &error, -ENOENT);
 
260
 
 
261
                r = session_activate(session);
 
262
                if (r < 0)
 
263
                        return bus_send_error_reply(connection, message, NULL, r);
 
264
 
 
265
                reply = dbus_message_new_method_return(message);
 
266
                if (!reply)
 
267
                        goto oom;
 
268
        } else {
 
269
                const BusBoundProperties bps[] = {
 
270
                        { "org.freedesktop.login1.Seat", bus_login_seat_properties, s },
 
271
                        { NULL, }
 
272
                };
 
273
                return bus_default_message_handler(connection, message, INTROSPECTION, INTERFACES_LIST, bps);
 
274
        }
 
275
 
 
276
        if (reply) {
 
277
                if (!dbus_connection_send(connection, reply, NULL))
 
278
                        goto oom;
 
279
 
 
280
                dbus_message_unref(reply);
 
281
        }
 
282
 
 
283
        return DBUS_HANDLER_RESULT_HANDLED;
 
284
 
 
285
oom:
 
286
        if (reply)
 
287
                dbus_message_unref(reply);
 
288
 
 
289
        dbus_error_free(&error);
 
290
 
 
291
        return DBUS_HANDLER_RESULT_NEED_MEMORY;
 
292
}
 
293
 
 
294
static DBusHandlerResult seat_message_handler(
 
295
                DBusConnection *connection,
 
296
                DBusMessage *message,
 
297
                void *userdata) {
 
298
 
 
299
        Manager *m = userdata;
 
300
        Seat *s;
 
301
        int r;
 
302
 
 
303
        r = get_seat_for_path(m, dbus_message_get_path(message), &s);
 
304
        if (r < 0) {
 
305
 
 
306
                if (r == -ENOMEM)
 
307
                        return DBUS_HANDLER_RESULT_NEED_MEMORY;
 
308
 
 
309
                if (r == -ENOENT) {
 
310
                        DBusError e;
 
311
 
 
312
                        dbus_error_init(&e);
 
313
                        dbus_set_error_const(&e, DBUS_ERROR_UNKNOWN_OBJECT, "Unknown seat");
 
314
                        return bus_send_error_reply(connection, message, &e, r);
 
315
                }
 
316
 
 
317
                return bus_send_error_reply(connection, message, NULL, r);
 
318
        }
 
319
 
 
320
        return seat_message_dispatch(s, connection, message);
 
321
}
 
322
 
 
323
const DBusObjectPathVTable bus_seat_vtable = {
 
324
        .message_function = seat_message_handler
 
325
};
 
326
 
 
327
char *seat_bus_path(Seat *s) {
 
328
        char *t, *r;
 
329
 
 
330
        assert(s);
 
331
 
 
332
        t = bus_path_escape(s->id);
 
333
        if (!t)
 
334
                return NULL;
 
335
 
 
336
        r = strappend("/org/freedesktop/login1/seat/", t);
 
337
        free(t);
 
338
 
 
339
        return r;
 
340
}
 
341
 
 
342
int seat_send_signal(Seat *s, bool new_seat) {
 
343
        DBusMessage *m;
 
344
        int r = -ENOMEM;
 
345
        char *p = NULL;
 
346
 
 
347
        assert(s);
 
348
 
 
349
        m = dbus_message_new_signal("/org/freedesktop/login1",
 
350
                                    "org.freedesktop.login1.Manager",
 
351
                                    new_seat ? "SeatNew" : "SeatRemoved");
 
352
 
 
353
        if (!m)
 
354
                return -ENOMEM;
 
355
 
 
356
        p = seat_bus_path(s);
 
357
        if (!p)
 
358
                goto finish;
 
359
 
 
360
        if (!dbus_message_append_args(
 
361
                            m,
 
362
                            DBUS_TYPE_STRING, &s->id,
 
363
                            DBUS_TYPE_OBJECT_PATH, &p,
 
364
                            DBUS_TYPE_INVALID))
 
365
                goto finish;
 
366
 
 
367
        if (!dbus_connection_send(s->manager->bus, m, NULL))
 
368
                goto finish;
 
369
 
 
370
        r = 0;
 
371
 
 
372
finish:
 
373
        dbus_message_unref(m);
 
374
        free(p);
 
375
 
 
376
        return r;
 
377
}
 
378
 
 
379
int seat_send_changed(Seat *s, const char *properties) {
 
380
        DBusMessage *m;
 
381
        int r = -ENOMEM;
 
382
        char *p = NULL;
 
383
 
 
384
        assert(s);
 
385
 
 
386
        if (!s->started)
 
387
                return 0;
 
388
 
 
389
        p = seat_bus_path(s);
 
390
        if (!p)
 
391
                return -ENOMEM;
 
392
 
 
393
        m = bus_properties_changed_new(p, "org.freedesktop.login1.Seat", properties);
 
394
        if (!m)
 
395
                goto finish;
 
396
 
 
397
        if (!dbus_connection_send(s->manager->bus, m, NULL))
 
398
                goto finish;
 
399
 
 
400
        r = 0;
 
401
 
 
402
finish:
 
403
        if (m)
 
404
                dbus_message_unref(m);
 
405
        free(p);
 
406
 
 
407
        return r;
 
408
}