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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 "logind.h" | |
23 | #include "dbus-common.h" | |
24 | ||
25 | #define BUS_MANAGER_INTERFACE \ | |
26 | " <interface name=\"org.freedesktop.login1.Manager\">\n" \ | |
27 | " <method name=\"GetSeat\">\n" \ | |
28 | " <arg name=\"id\" type=\"s\" direction=\"in\"/>\n" \ | |
29 | " <arg name=\"seat\" type=\"o\" direction=\"out\"/>\n" \ | |
30 | " </method>\n" \ | |
31 | " <method name=\"GetUser\">\n" \ | |
32 | " <arg name=\"uid\" type=\"t\" direction=\"in\"/>\n" \ | |
33 | " <arg name=\"user\" type=\"o\" direction=\"out\"/>\n" \ | |
34 | " </method>\n" \ | |
35 | " <method name=\"GetSession\">\n" \ | |
36 | " <arg name=\"id\" type=\"s\" direction=\"in\"/>\n" \ | |
37 | " <arg name=\"session\" type=\"o\" direction=\"out\"/>\n" \ | |
38 | " </method>\n" \ | |
39 | " <method name=\"ListSeats\">\n" \ | |
40 | " <arg name=\"seats\" type=\"a(so)\" direction=\"out\"/>\n" \ | |
41 | " </method>\n" \ | |
42 | " <method name=\"ListUsers\">\n" \ | |
43 | " <arg name=\"users\" type=\"a(uso)\" direction=\"out\"/>\n" \ | |
44 | " </method>\n" \ | |
45 | " <method name=\"ListSessions\">\n" \ | |
46 | " <arg name=\"users\" type=\"a(sussso)\" direction=\"out\"/>\n" \ | |
47 | " </method>\n" \ | |
48 | " <method name=\"CreateSession\">\n" \ | |
49 | " <arg name=\"uid\" type=\"u\" direction=\"in\"/>\n" \ | |
50 | " <arg name=\"leader\" type=\"u\" direction=\"in\"/>\n" \ | |
51 | " <arg name=\"type\" type=\"s\" direction=\"in\"/>\n" \ | |
52 | " <arg name=\"seat\" type=\"s\" direction=\"in\"/>\n" \ | |
53 | " <arg name=\"tty\" type=\"s\" direction=\"in\"/>\n" \ | |
54 | " <arg name=\"display\" type=\"s\" direction=\"in\"/>\n" \ | |
55 | " <arg name=\"remote\" type=\"b\" direction=\"in\"/>\n" \ | |
56 | " <arg name=\"remote_user\" type=\"s\" direction=\"in\"/>\n" \ | |
57 | " <arg name=\"remote_host\" type=\"s\" direction=\"in\"/>\n" \ | |
58 | " <arg name=\"controllers\" type=\"as\" direction=\"in\"/>\n" \ | |
59 | " <arg name=\"reset_controllers\" type=\"as\" direction=\"in\"/>\n" \ | |
60 | " <arg name=\"kill_processes\" type=\"as\" direction=\"in\"/>\n" \ | |
61 | " <arg name=\"id\" type=\"s\" direction=\"out\"/>\n" \ | |
62 | " <arg name=\"path\" type=\"o\" direction=\"out\"/>\n" \ | |
63 | " <arg name=\"fd\" type=\"h\" direction=\"out\"/>\n" \ | |
64 | " </method>\n" \ | |
65 | " <method name=\"TerminateSession\">\n" \ | |
66 | " <arg name=\"id\" type=\"s\" direction=\"in\"/>\n" \ | |
67 | " </method>\n" \ | |
68 | " <method name=\"TerminateUser\">\n" \ | |
69 | " <arg name=\"uid\" type=\"t\" direction=\"in\"/>\n" \ | |
70 | " </method>\n" \ | |
71 | " <method name=\"TerminateSeat\">\n" \ | |
72 | " <arg name=\"id\" type=\"s\" direction=\"in\"/>\n" \ | |
73 | " </method>\n" \ | |
74 | " <signal name=\"SessionNew\">\n" \ | |
75 | " <arg name=\"id\" type=\"s\"/>\n" \ | |
76 | " <arg name=\"path\" type=\"o\"/>\n" \ | |
77 | " </signal>\n" \ | |
78 | " <signal name=\"SessionRemoved\">\n" \ | |
79 | " <arg name=\"id\" type=\"s\"/>\n" \ | |
80 | " <arg name=\"path\" type=\"o\"/>\n" \ | |
81 | " </signal>\n" \ | |
82 | " <signal name=\"UserNew\">\n" \ | |
83 | " <arg name=\"uid\" type=\"u\"/>\n" \ | |
84 | " <arg name=\"path\" type=\"o\"/>\n" \ | |
85 | " </signal>\n" \ | |
86 | " <signal name=\"UserRemoved\">\n" \ | |
87 | " <arg name=\"uid\" type=\"u\"/>\n" \ | |
88 | " <arg name=\"path\" type=\"o\"/>\n" \ | |
89 | " </signal>\n" \ | |
90 | " <signal name=\"SeatNew\">\n" \ | |
91 | " <arg name=\"id\" type=\"s\"/>\n" \ | |
92 | " <arg name=\"path\" type=\"o\"/>\n" \ | |
93 | " </signal>\n" \ | |
94 | " <signal name=\"SeatRemoved\">\n" \ | |
95 | " <arg name=\"id\" type=\"s\"/>\n" \ | |
96 | " <arg name=\"path\" type=\"o\"/>\n" \ | |
97 | " </signal>\n" \ | |
98 | " <property name=\"ControlGroupHierarchy\" type=\"s\" access=\"read\"/>\n" \ | |
99 | " <property name=\"Controllers\" type=\"as\" access=\"read\"/>\n" \ | |
100 | " <property name=\"ResetControllers\" type=\"as\" access=\"read\"/>\n" \ | |
101 | " <property name=\"NAutoVTs\" type=\"u\" access=\"read\"/>\n" \ | |
102 | " <property name=\"KillOnlyUsers\" type=\"as\" access=\"read\"/>\n" \ | |
103 | " <property name=\"KillExcludeUsers\" type=\"as\" access=\"read\"/>\n" \ | |
104 | " <property name=\"KillUserProcesses\" type=\"b\" access=\"read\"/>\n" \ | |
105 | " </interface>\n" | |
106 | ||
107 | #define INTROSPECTION_BEGIN \ | |
108 | DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE \ | |
109 | "<node>\n" \ | |
110 | BUS_MANAGER_INTERFACE \ | |
111 | BUS_PROPERTIES_INTERFACE \ | |
112 | BUS_PEER_INTERFACE \ | |
113 | BUS_INTROSPECTABLE_INTERFACE | |
114 | ||
115 | #define INTROSPECTION_END \ | |
116 | "</node>\n" | |
117 | ||
118 | #define INTERFACES_LIST \ | |
119 | BUS_GENERIC_INTERFACES_LIST \ | |
120 | "org.freedesktop.login1.Manager\0" | |
121 | ||
122 | static DBusHandlerResult manager_message_handler( | |
123 | DBusConnection *connection, | |
124 | DBusMessage *message, | |
125 | void *userdata) { | |
126 | ||
127 | Manager *m = userdata; | |
128 | ||
129 | const BusProperty properties[] = { | |
130 | { "org.freedesktop.login1.Manager", "ControlGroupHierarchy", bus_property_append_string, "s", m->cgroup_path }, | |
131 | { "org.freedesktop.login1.Manager", "Controllers", bus_property_append_strv, "as", m->controllers }, | |
132 | { "org.freedesktop.login1.Manager", "ResetControllers", bus_property_append_strv, "as", m->reset_controllers }, | |
133 | { "org.freedesktop.login1.Manager", "NAutoVTs", bus_property_append_unsigned, "u", &m->n_autovts }, | |
134 | { "org.freedesktop.login1.Manager", "KillOnlyUsers", bus_property_append_strv, "as", m->kill_only_users }, | |
135 | { "org.freedesktop.login1.Manager", "KillExcludeUsers", bus_property_append_strv, "as", m->kill_exclude_users }, | |
136 | { "org.freedesktop.login1.Manager", "KillUserProcesses", bus_property_append_bool, "b", &m->kill_user_processes }, | |
137 | { NULL, NULL, NULL, NULL, NULL } | |
138 | }; | |
139 | ||
140 | DBusError error; | |
141 | DBusMessage *reply = NULL; | |
142 | ||
143 | assert(connection); | |
144 | assert(message); | |
145 | assert(m); | |
146 | ||
147 | dbus_error_init(&error); | |
148 | ||
149 | if (dbus_message_is_method_call(message, "org.freedesktop.DBus.Introspectable", "Introspect")) { | |
150 | char *introspection = NULL; | |
151 | FILE *f; | |
152 | Iterator i; | |
153 | Session *session; | |
154 | Seat *seat; | |
155 | User *user; | |
156 | size_t size; | |
157 | char *p; | |
158 | ||
159 | if (!(reply = dbus_message_new_method_return(message))) | |
160 | goto oom; | |
161 | ||
162 | /* We roll our own introspection code here, instead of | |
163 | * relying on bus_default_message_handler() because we | |
164 | * need to generate our introspection string | |
165 | * dynamically. */ | |
166 | ||
167 | if (!(f = open_memstream(&introspection, &size))) | |
168 | goto oom; | |
169 | ||
170 | fputs(INTROSPECTION_BEGIN, f); | |
171 | ||
172 | HASHMAP_FOREACH(seat, m->seats, i) { | |
173 | p = bus_path_escape(seat->id); | |
174 | ||
175 | if (p) { | |
176 | fprintf(f, "<node name=\"seat/%s\"/>", p); | |
177 | free(p); | |
178 | } | |
179 | } | |
180 | ||
181 | HASHMAP_FOREACH(user, m->users, i) | |
182 | fprintf(f, "<node name=\"user/%llu\"/>", (unsigned long long) user->uid); | |
183 | ||
184 | HASHMAP_FOREACH(session, m->sessions, i) { | |
185 | p = bus_path_escape(session->id); | |
186 | ||
187 | if (p) { | |
188 | fprintf(f, "<node name=\"session/%s\"/>", p); | |
189 | free(p); | |
190 | } | |
191 | } | |
192 | ||
193 | fputs(INTROSPECTION_END, f); | |
194 | ||
195 | if (ferror(f)) { | |
196 | fclose(f); | |
197 | free(introspection); | |
198 | goto oom; | |
199 | } | |
200 | ||
201 | fclose(f); | |
202 | ||
203 | if (!introspection) | |
204 | goto oom; | |
205 | ||
206 | if (!dbus_message_append_args(reply, DBUS_TYPE_STRING, &introspection, DBUS_TYPE_INVALID)) { | |
207 | free(introspection); | |
208 | goto oom; | |
209 | } | |
210 | ||
211 | free(introspection); | |
212 | } else | |
213 | return bus_default_message_handler(connection, message, NULL, INTERFACES_LIST, properties); | |
214 | ||
215 | if (reply) { | |
216 | if (!dbus_connection_send(connection, reply, NULL)) | |
217 | goto oom; | |
218 | ||
219 | dbus_message_unref(reply); | |
220 | } | |
221 | ||
222 | return DBUS_HANDLER_RESULT_HANDLED; | |
223 | ||
224 | oom: | |
225 | if (reply) | |
226 | dbus_message_unref(reply); | |
227 | ||
228 | dbus_error_free(&error); | |
229 | ||
230 | return DBUS_HANDLER_RESULT_NEED_MEMORY; | |
231 | } | |
232 | ||
233 | const DBusObjectPathVTable bus_manager_vtable = { | |
234 | .message_function = manager_message_handler | |
235 | }; |