src/dbus-manager.c

   1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
   2
   3 /***
   4   This file is part of systemd.
   5
   6   Copyright 2010 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 <unistd.h>
  24
  25 #include "dbus.h"
  26 #include "log.h"
  27 #include "dbus-manager.h"
  28 #include "strv.h"
  29 #include "bus-errors.h"
  30 #include "build.h"
  31 #include "dbus-common.h"
  32
  33 #define BUS_MANAGER_INTERFACE_BEGIN                                     \
  34         " <interface name=\"org.freedesktop.systemd1.Manager\">\n"
  35
  36 #define BUS_MANAGER_INTERFACE_METHODS                                   \
  37         "  <method name=\"GetUnit\">\n"                                 \
  38         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
  39         "   <arg name=\"unit\" type=\"o\" direction=\"out\"/>\n"        \
  40         "  </method>\n"                                                 \
  41         "  <method name=\"GetUnitByPID\">\n"                            \
  42         "   <arg name=\"pid\" type=\"u\" direction=\"in\"/>\n"          \
  43         "   <arg name=\"unit\" type=\"o\" direction=\"out\"/>\n"        \
  44         "  </method>\n"                                                 \
  45         "  <method name=\"LoadUnit\">\n"                                \
  46         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
  47         "   <arg name=\"unit\" type=\"o\" direction=\"out\"/>\n"        \
  48         "  </method>\n"                                                 \
  49         "  <method name=\"StartUnit\">\n"                               \
  50         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
  51         "   <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n"         \
  52         "   <arg name=\"job\" type=\"o\" direction=\"out\"/>\n"         \
  53         "  </method>\n"                                                 \
  54         "  <method name=\"StartUnitReplace\">\n"                        \
  55         "   <arg name=\"old_unit\" type=\"s\" direction=\"in\"/>\n"     \
  56         "   <arg name=\"new_unit\" type=\"s\" direction=\"in\"/>\n"     \
  57         "   <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n"         \
  58         "   <arg name=\"job\" type=\"o\" direction=\"out\"/>\n"         \
  59         "  </method>\n"                                                 \
  60         "  <method name=\"StopUnit\">\n"                                \
  61         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
  62         "   <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n"         \
  63         "   <arg name=\"job\" type=\"o\" direction=\"out\"/>\n"         \
  64         "  </method>\n"                                                 \
  65         "  <method name=\"ReloadUnit\">\n"                              \
  66         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
  67         "   <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n"         \
  68         "   <arg name=\"job\" type=\"o\" direction=\"out\"/>\n"         \
  69         "  </method>\n"                                                 \
  70         "  <method name=\"RestartUnit\">\n"                             \
  71         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
  72         "   <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n"         \
  73         "   <arg name=\"job\" type=\"o\" direction=\"out\"/>\n"         \
  74         "  </method>\n"                                                 \
  75         "  <method name=\"TryRestartUnit\">\n"                          \
  76         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
  77         "   <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n"         \
  78         "   <arg name=\"job\" type=\"o\" direction=\"out\"/>\n"         \
  79         "  </method>\n"                                                 \
  80         "  <method name=\"ReloadOrRestartUnit\">\n"                     \
  81         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
  82         "   <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n"         \
  83         "   <arg name=\"job\" type=\"o\" direction=\"out\"/>\n"         \
  84         "  </method>\n"                                                 \
  85         "  <method name=\"ReloadOrTryRestartUnit\">\n"                  \
  86         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
  87         "   <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n"         \
  88         "   <arg name=\"job\" type=\"o\" direction=\"out\"/>\n"         \
  89         "  </method>\n"                                                 \
  90         "  <method name=\"KillUnit\">\n"                                \
  91         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
  92         "   <arg name=\"who\" type=\"s\" direction=\"in\"/>\n"          \
  93         "   <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n"         \
  94         "   <arg name=\"signal\" type=\"i\" direction=\"in\"/>\n"       \
  95         "  </method>\n"                                                 \
  96         "  <method name=\"ResetFailedUnit\">\n"                         \
  97         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
  98         "  </method>\n"                                                 \
  99         "  <method name=\"GetJob\">\n"                                  \
 100         "   <arg name=\"id\" type=\"u\" direction=\"in\"/>\n"           \
 101         "   <arg name=\"job\" type=\"o\" direction=\"out\"/>\n"         \
 102         "  </method>\n"                                                 \
 103         "  <method name=\"ClearJobs\"/>\n"                              \
 104         "  <method name=\"ResetFailed\"/>\n"                            \
 105         "  <method name=\"ListUnits\">\n"                               \
 106         "   <arg name=\"units\" type=\"a(ssssssouso)\" direction=\"out\"/>\n" \
 107         "  </method>\n"                                                 \
 108         "  <method name=\"ListJobs\">\n"                                \
 109         "   <arg name=\"jobs\" type=\"a(usssoo)\" direction=\"out\"/>\n" \
 110         "  </method>\n"                                                 \
 111         "  <method name=\"Subscribe\"/>\n"                              \
 112         "  <method name=\"Unsubscribe\"/>\n"                            \
 113         "  <method name=\"Dump\"/>\n"                                   \
 114         "  <method name=\"CreateSnapshot\">\n"                          \
 115         "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
 116         "   <arg name=\"cleanup\" type=\"b\" direction=\"in\"/>\n"      \
 117         "   <arg name=\"unit\" type=\"o\" direction=\"out\"/>\n"        \
 118         "  </method>\n"                                                 \
 119         "  <method name=\"Reload\"/>\n"                                 \
 120         "  <method name=\"Reexecute\"/>\n"                              \
 121         "  <method name=\"Exit\"/>\n"                                   \
 122         "  <method name=\"Reboot\"/>\n"                                 \
 123         "  <method name=\"PowerOff\"/>\n"                               \
 124         "  <method name=\"Halt\"/>\n"                                   \
 125         "  <method name=\"KExec\"/>\n"                                  \
 126         "  <method name=\"SetEnvironment\">\n"                          \
 127         "   <arg name=\"names\" type=\"as\" direction=\"in\"/>\n"       \
 128         "  </method>\n"                                                 \
 129         "  <method name=\"UnsetEnvironment\">\n"                        \
 130         "   <arg name=\"names\" type=\"as\" direction=\"in\"/>\n"       \
 131         "  </method>\n"                                                 \
 132         "  <method name=\"UnsetAndSetEnvironment\">\n"                  \
 133         "   <arg name=\"unset\" type=\"as\" direction=\"in\"/>\n"       \
 134         "   <arg name=\"set\" type=\"as\" direction=\"in\"/>\n"         \
 135         "  </method>\n"
 136
 137 #define BUS_MANAGER_INTERFACE_SIGNALS                                   \
 138         "  <signal name=\"UnitNew\">\n"                                 \
 139         "   <arg name=\"id\" type=\"s\"/>\n"                            \
 140         "   <arg name=\"unit\" type=\"o\"/>\n"                          \
 141         "  </signal>\n"                                                 \
 142         "  <signal name=\"UnitRemoved\">\n"                             \
 143         "   <arg name=\"id\" type=\"s\"/>\n"                            \
 144         "   <arg name=\"unit\" type=\"o\"/>\n"                          \
 145         "  </signal>\n"                                                 \
 146         "  <signal name=\"JobNew\">\n"                                  \
 147         "   <arg name=\"id\" type=\"u\"/>\n"                            \
 148         "   <arg name=\"job\" type=\"o\"/>\n"                           \
 149         "  </signal>\n"                                                 \
 150         "  <signal name=\"JobRemoved\">\n"                              \
 151         "   <arg name=\"id\" type=\"u\"/>\n"                            \
 152         "   <arg name=\"job\" type=\"o\"/>\n"                           \
 153         "   <arg name=\"result\" type=\"s\"/>\n"                        \
 154         "  </signal>"
 155
 156 #define BUS_MANAGER_INTERFACE_PROPERTIES_GENERAL                        \
 157         "  <property name=\"Version\" type=\"s\" access=\"read\"/>\n"   \
 158         "  <property name=\"Distribution\" type=\"s\" access=\"read\"/>\n" \
 159         "  <property name=\"Features\" type=\"s\" access=\"read\"/>\n"  \
 160         "  <property name=\"Tainted\" type=\"s\" access=\"read\"/>\n"   \
 161         "  <property name=\"RunningAs\" type=\"s\" access=\"read\"/>\n" \
 162         "  <property name=\"InitRDTimestamp\" type=\"t\" access=\"read\"/>\n" \
 163         "  <property name=\"InitRDTimestampMonotonic\" type=\"t\" access=\"read\"/>\n" \
 164         "  <property name=\"StartupTimestamp\" type=\"t\" access=\"read\"/>\n" \
 165         "  <property name=\"StartupTimestampMonotonic\" type=\"t\" access=\"read\"/>\n" \
 166         "  <property name=\"FinishTimestamp\" type=\"t\" access=\"read\"/>\n" \
 167         "  <property name=\"FinishTimestampMonotonic\" type=\"t\" access=\"read\"/>\n" \
 168         "  <property name=\"LogLevel\" type=\"s\" access=\"readwrite\"/>\n"  \
 169         "  <property name=\"LogTarget\" type=\"s\" access=\"readwrite\"/>\n" \
 170         "  <property name=\"NNames\" type=\"u\" access=\"read\"/>\n"    \
 171         "  <property name=\"NJobs\" type=\"u\" access=\"read\"/>\n"     \
 172         "  <property name=\"NInstalledJobs\" type=\"u\" access=\"read\"/>\n" \
 173         "  <property name=\"NFailedJobs\" type=\"u\" access=\"read\"/>\n" \
 174         "  <property name=\"Progress\" type=\"d\" access=\"read\"/>\n"  \
 175         "  <property name=\"Environment\" type=\"as\" access=\"read\"/>\n" \
 176         "  <property name=\"ConfirmSpawn\" type=\"b\" access=\"read\"/>\n" \
 177         "  <property name=\"ShowStatus\" type=\"b\" access=\"read\"/>\n" \
 178         "  <property name=\"UnitPath\" type=\"as\" access=\"read\"/>\n" \
 179         "  <property name=\"NotifySocket\" type=\"s\" access=\"read\"/>\n" \
 180         "  <property name=\"ControlGroupHierarchy\" type=\"s\" access=\"read\"/>\n" \
 181         "  <property name=\"MountAuto\" type=\"b\" access=\"read\"/>\n" \
 182         "  <property name=\"SwapAuto\" type=\"b\" access=\"read\"/>\n"  \
 183         "  <property name=\"DefaultControllers\" type=\"as\" access=\"read\"/>\n" \
 184         "  <property name=\"DefaultStandardOutput\" type=\"s\" access=\"read\"/>\n" \
 185         "  <property name=\"DefaultStandardError\" type=\"s\" access=\"read\"/>\n"
 186
 187 #ifdef HAVE_SYSV_COMPAT
 188 #define BUS_MANAGER_INTERFACE_PROPERTIES_SYSV                           \
 189         "  <property name=\"SysVConsole\" type=\"b\" access=\"read\"/>\n" \
 190         "  <property name=\"SysVInitPath\" type=\"as\" access=\"read\"/>\n" \
 191         "  <property name=\"SysVRcndPath\" type=\"as\" access=\"read\"/>\n"
 192 #else
 193 #define BUS_MANAGER_INTERFACE_PROPERTIES_SYSV
 194 #endif
 195
 196 #define BUS_MANAGER_INTERFACE_END                                       \
 197         " </interface>\n"
 198
 199 #define BUS_MANAGER_INTERFACE                                           \
 200         BUS_MANAGER_INTERFACE_BEGIN                                     \
 201         BUS_MANAGER_INTERFACE_METHODS                                   \
 202         BUS_MANAGER_INTERFACE_SIGNALS                                   \
 203         BUS_MANAGER_INTERFACE_PROPERTIES_GENERAL                        \
 204         BUS_MANAGER_INTERFACE_PROPERTIES_SYSV                           \
 205         BUS_MANAGER_INTERFACE_END
 206
 207 #define INTROSPECTION_BEGIN                                             \
 208         DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE                       \
 209         "<node>\n"                                                      \
 210         BUS_MANAGER_INTERFACE                                           \
 211         BUS_PROPERTIES_INTERFACE                                        \
 212         BUS_PEER_INTERFACE                                              \
 213         BUS_INTROSPECTABLE_INTERFACE
 214
 215 #define INTROSPECTION_END                                               \
 216         "</node>\n"
 217
 218 #define INTERFACES_LIST                              \
 219         BUS_GENERIC_INTERFACES_LIST                  \
 220         "org.freedesktop.systemd1.Manager\0"
 221
 222 const char bus_manager_interface[] _introspect_("Manager") = BUS_MANAGER_INTERFACE;
 223
 224 static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_manager_append_running_as, manager_running_as, ManagerRunningAs);
 225 static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_manager_append_exec_output, exec_output, ExecOutput);
 226
 227 static int bus_manager_append_tainted(DBusMessageIter *i, const char *property, void *data) {
 228         const char *t;
 229         Manager *m = data;
 230         char buf[LINE_MAX] = "", *e = buf, *p = NULL;
 231
 232         assert(i);
 233         assert(property);
 234         assert(m);
 235
 236         if (m->taint_usr)
 237                 e = stpcpy(e, "usr-separate-fs ");
 238
 239         if (readlink_malloc("/etc/mtab", &p) < 0)
 240                 e = stpcpy(e, "etc-mtab-not-symlink ");
 241         else
 242                 free(p);
 243
 244         if (access("/proc/cgroups", F_OK) < 0)
 245                 e = stpcpy(e, "cgroups-missing ");
 246
 247         t = strstrip(buf);
 248
 249         if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &t))
 250                 return -ENOMEM;
 251
 252         return 0;
 253 }
 254
 255 static int bus_manager_append_log_target(DBusMessageIter *i, const char *property, void *data) {
 256         const char *t;
 257
 258         assert(i);
 259         assert(property);
 260
 261         t = log_target_to_string(log_get_target());
 262
 263         if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &t))
 264                 return -ENOMEM;
 265
 266         return 0;
 267 }
 268
 269 static int bus_manager_set_log_target(DBusMessageIter *i, const char *property) {
 270         const char *t;
 271
 272         assert(i);
 273         assert(property);
 274
 275         dbus_message_iter_get_basic(i, &t);
 276
 277         return log_set_target_from_string(t);
 278 }
 279
 280 static int bus_manager_append_log_level(DBusMessageIter *i, const char *property, void *data) {
 281         const char *t;
 282
 283         assert(i);
 284         assert(property);
 285
 286         t = log_level_to_string(log_get_max_level());
 287
 288         if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &t))
 289                 return -ENOMEM;
 290
 291         return 0;
 292 }
 293
 294 static int bus_manager_set_log_level(DBusMessageIter *i, const char *property) {
 295         const char *t;
 296
 297         assert(i);
 298         assert(property);
 299
 300         dbus_message_iter_get_basic(i, &t);
 301
 302         return log_set_max_level_from_string(t);
 303 }
 304
 305 static int bus_manager_append_n_names(DBusMessageIter *i, const char *property, void *data) {
 306         Manager *m = data;
 307         uint32_t u;
 308
 309         assert(i);
 310         assert(property);
 311         assert(m);
 312
 313         u = hashmap_size(m->units);
 314
 315         if (!dbus_message_iter_append_basic(i, DBUS_TYPE_UINT32, &u))
 316                 return -ENOMEM;
 317
 318         return 0;
 319 }
 320
 321 static int bus_manager_append_n_jobs(DBusMessageIter *i, const char *property, void *data) {
 322         Manager *m = data;
 323         uint32_t u;
 324
 325         assert(i);
 326         assert(property);
 327         assert(m);
 328
 329         u = hashmap_size(m->jobs);
 330
 331         if (!dbus_message_iter_append_basic(i, DBUS_TYPE_UINT32, &u))
 332                 return -ENOMEM;
 333
 334         return 0;
 335 }
 336
 337 static int bus_manager_append_progress(DBusMessageIter *i, const char *property, void *data) {
 338         double d;
 339         Manager *m = data;
 340
 341         assert(i);
 342         assert(property);
 343         assert(m);
 344
 345         if (dual_timestamp_is_set(&m->finish_timestamp))
 346                 d = 1.0;
 347         else
 348                 d = 1.0 - ((double) hashmap_size(m->jobs) / (double) m->n_installed_jobs);
 349
 350         if (!dbus_message_iter_append_basic(i, DBUS_TYPE_DOUBLE, &d))
 351                 return -ENOMEM;
 352
 353         return 0;
 354 }
 355
 356 static const char *message_get_sender_with_fallback(DBusMessage *m) {
 357         const char *s;
 358
 359         assert(m);
 360
 361         if ((s = dbus_message_get_sender(m)))
 362                 return s;
 363
 364         /* When the message came in from a direct connection the
 365          * message will have no sender. We fix that here. */
 366
 367         return ":no-sender";
 368 }
 369
 370 static DBusHandlerResult bus_manager_message_handler(DBusConnection *connection, DBusMessage *message, void *data) {
 371         Manager *m = data;
 372
 373         const BusProperty properties[] = {
 374                 { "org.freedesktop.systemd1.Manager", "Version",       bus_property_append_string,    "s",  PACKAGE_STRING     },
 375                 { "org.freedesktop.systemd1.Manager", "Distribution",  bus_property_append_string,    "s",  DISTRIBUTION       },
 376                 { "org.freedesktop.systemd1.Manager", "Features",      bus_property_append_string,    "s",  SYSTEMD_FEATURES   },
 377                 { "org.freedesktop.systemd1.Manager", "RunningAs",     bus_manager_append_running_as, "s",  &m->running_as     },
 378                 { "org.freedesktop.systemd1.Manager", "Tainted",       bus_manager_append_tainted,    "s",  m                  },
 379                 { "org.freedesktop.systemd1.Manager", "InitRDTimestamp", bus_property_append_uint64,  "t",  &m->initrd_timestamp.realtime },
 380                 { "org.freedesktop.systemd1.Manager", "InitRDTimestampMonotonic", bus_property_append_uint64, "t", &m->initrd_timestamp.monotonic },
 381                 { "org.freedesktop.systemd1.Manager", "StartupTimestamp", bus_property_append_uint64, "t",  &m->startup_timestamp.realtime },
 382                 { "org.freedesktop.systemd1.Manager", "StartupTimestampMonotonic", bus_property_append_uint64, "t", &m->startup_timestamp.monotonic },
 383                 { "org.freedesktop.systemd1.Manager", "FinishTimestamp", bus_property_append_uint64,  "t",  &m->finish_timestamp.realtime },
 384                 { "org.freedesktop.systemd1.Manager", "FinishTimestampMonotonic", bus_property_append_uint64, "t",&m->finish_timestamp.monotonic },
 385                 { "org.freedesktop.systemd1.Manager", "LogLevel",      bus_manager_append_log_level,  "s",  m, bus_manager_set_log_level },
 386                 { "org.freedesktop.systemd1.Manager", "LogTarget",     bus_manager_append_log_target, "s",  m, bus_manager_set_log_target },
 387                 { "org.freedesktop.systemd1.Manager", "NNames",        bus_manager_append_n_names,    "u",  m                  },
 388                 { "org.freedesktop.systemd1.Manager", "NJobs",         bus_manager_append_n_jobs,     "u",  m                  },
 389                 { "org.freedesktop.systemd1.Manager", "NInstalledJobs",bus_property_append_uint32,    "u",  &m->n_installed_jobs },
 390                 { "org.freedesktop.systemd1.Manager", "NFailedJobs",   bus_property_append_uint32,    "u",  &m->n_failed_jobs  },
 391                 { "org.freedesktop.systemd1.Manager", "Progress",      bus_manager_append_progress,   "d",  m                  },
 392                 { "org.freedesktop.systemd1.Manager", "Environment",   bus_property_append_strv,      "as", m->environment     },
 393                 { "org.freedesktop.systemd1.Manager", "ConfirmSpawn",  bus_property_append_bool,      "b",  &m->confirm_spawn  },
 394                 { "org.freedesktop.systemd1.Manager", "ShowStatus",    bus_property_append_bool,      "b",  &m->show_status    },
 395                 { "org.freedesktop.systemd1.Manager", "UnitPath",      bus_property_append_strv,      "as", m->lookup_paths.unit_path },
 396                 { "org.freedesktop.systemd1.Manager", "NotifySocket",  bus_property_append_string,    "s",  m->notify_socket   },
 397                 { "org.freedesktop.systemd1.Manager", "ControlGroupHierarchy", bus_property_append_string, "s", m->cgroup_hierarchy },
 398                 { "org.freedesktop.systemd1.Manager", "MountAuto",     bus_property_append_bool,      "b",  &m->mount_auto     },
 399                 { "org.freedesktop.systemd1.Manager", "SwapAuto",      bus_property_append_bool,      "b",  &m->swap_auto      },
 400                 { "org.freedesktop.systemd1.Manager", "DefaultControllers", bus_property_append_strv, "as", m->default_controllers },
 401                 { "org.freedesktop.systemd1.Manager", "DefaultStandardOutput", bus_manager_append_exec_output, "s", &m->default_std_output },
 402                 { "org.freedesktop.systemd1.Manager", "DefaultStandardError",  bus_manager_append_exec_output, "s", &m->default_std_error  },
 403 #ifdef HAVE_SYSV_COMPAT
 404                 { "org.freedesktop.systemd1.Manager", "SysVConsole",   bus_property_append_bool,      "b",  &m->sysv_console   },
 405                 { "org.freedesktop.systemd1.Manager", "SysVInitPath",  bus_property_append_strv,      "as", m->lookup_paths.sysvinit_path },
 406                 { "org.freedesktop.systemd1.Manager", "SysVRcndPath",  bus_property_append_strv,      "as", m->lookup_paths.sysvrcnd_path },
 407 #endif
 408                 { NULL, NULL, NULL, NULL, NULL }
 409         };
 410
 411         int r;
 412         DBusError error;
 413         DBusMessage *reply = NULL;
 414         char * path = NULL;
 415         JobType job_type = _JOB_TYPE_INVALID;
 416         bool reload_if_possible = false;
 417
 418         assert(connection);
 419         assert(message);
 420         assert(m);
 421
 422         dbus_error_init(&error);
 423
 424         if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "GetUnit")) {
 425                 const char *name;
 426                 Unit *u;
 427
 428                 if (!dbus_message_get_args(
 429                                     message,
 430                                     &error,
 431                                     DBUS_TYPE_STRING, &name,
 432                                     DBUS_TYPE_INVALID))
 433                         return bus_send_error_reply(connection, message, &error, -EINVAL);
 434
 435                 if (!(u = manager_get_unit(m, name))) {
 436                         dbus_set_error(&error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s is not loaded.", name);
 437                         return bus_send_error_reply(connection, message, &error, -ENOENT);
 438                 }
 439
 440                 if (!(reply = dbus_message_new_method_return(message)))
 441                         goto oom;
 442
 443                 if (!(path = unit_dbus_path(u)))
 444                         goto oom;
 445
 446                 if (!dbus_message_append_args(
 447                                     reply,
 448                                     DBUS_TYPE_OBJECT_PATH, &path,
 449                                     DBUS_TYPE_INVALID))
 450                         goto oom;
 451         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "GetUnitByPID")) {
 452                 Unit *u;
 453                 uint32_t pid;
 454
 455                 if (!dbus_message_get_args(
 456                                     message,
 457                                     &error,
 458                                     DBUS_TYPE_UINT32, &pid,
 459                                     DBUS_TYPE_INVALID))
 460                         return bus_send_error_reply(connection, message, &error, -EINVAL);
 461
 462                 if (!(u = cgroup_unit_by_pid(m, (pid_t) pid))) {
 463                         dbus_set_error(&error, BUS_ERROR_NO_SUCH_UNIT, "No unit for PID %lu is loaded.", (unsigned long) pid);
 464                         return bus_send_error_reply(connection, message, &error, -ENOENT);
 465                 }
 466
 467                 if (!(reply = dbus_message_new_method_return(message)))
 468                         goto oom;
 469
 470                 if (!(path = unit_dbus_path(u)))
 471                         goto oom;
 472
 473                 if (!dbus_message_append_args(
 474                                     reply,
 475                                     DBUS_TYPE_OBJECT_PATH, &path,
 476                                     DBUS_TYPE_INVALID))
 477                         goto oom;
 478         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "LoadUnit")) {
 479                 const char *name;
 480                 Unit *u;
 481
 482                 if (!dbus_message_get_args(
 483                                     message,
 484                                     &error,
 485                                     DBUS_TYPE_STRING, &name,
 486                                     DBUS_TYPE_INVALID))
 487                         return bus_send_error_reply(connection, message, &error, -EINVAL);
 488
 489                 if ((r = manager_load_unit(m, name, NULL, &error, &u)) < 0)
 490                         return bus_send_error_reply(connection, message, &error, r);
 491
 492                 if (!(reply = dbus_message_new_method_return(message)))
 493                         goto oom;
 494
 495                 if (!(path = unit_dbus_path(u)))
 496                         goto oom;
 497
 498                 if (!dbus_message_append_args(
 499                                     reply,
 500                                     DBUS_TYPE_OBJECT_PATH, &path,
 501                                     DBUS_TYPE_INVALID))
 502                         goto oom;
 503
 504         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "StartUnit"))
 505                 job_type = JOB_START;
 506         else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "StartUnitReplace"))
 507                 job_type = JOB_START;
 508         else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "StopUnit"))
 509                 job_type = JOB_STOP;
 510         else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ReloadUnit"))
 511                 job_type = JOB_RELOAD;
 512         else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "RestartUnit"))
 513                 job_type = JOB_RESTART;
 514         else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "TryRestartUnit"))
 515                 job_type = JOB_TRY_RESTART;
 516         else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ReloadOrRestartUnit")) {
 517                 reload_if_possible = true;
 518                 job_type = JOB_RESTART;
 519         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ReloadOrTryRestartUnit")) {
 520                 reload_if_possible = true;
 521                 job_type = JOB_TRY_RESTART;
 522         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "KillUnit")) {
 523                 const char *name, *swho, *smode;
 524                 int32_t signo;
 525                 Unit *u;
 526                 KillMode mode;
 527                 KillWho who;
 528
 529                 if (!dbus_message_get_args(
 530                                     message,
 531                                     &error,
 532                                     DBUS_TYPE_STRING, &name,
 533                                     DBUS_TYPE_STRING, &swho,
 534                                     DBUS_TYPE_STRING, &smode,
 535                                     DBUS_TYPE_INT32, &signo,
 536                                     DBUS_TYPE_INVALID))
 537                         return bus_send_error_reply(connection, message, &error, -EINVAL);
 538
 539                 if ((mode = kill_mode_from_string(smode)) < 0 ||
 540                     (who = kill_who_from_string(swho)) < 0 ||
 541                     signo <= 0 ||
 542                     signo >= _NSIG)
 543                         return bus_send_error_reply(connection, message, &error, -EINVAL);
 544
 545                 if (!(u = manager_get_unit(m, name))) {
 546                         dbus_set_error(&error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s is not loaded.", name);
 547                         return bus_send_error_reply(connection, message, &error, -ENOENT);
 548                 }
 549
 550                 if ((r = unit_kill(u, who, mode, signo, &error)) < 0)
 551                         return bus_send_error_reply(connection, message, &error, r);
 552
 553                 if (!(reply = dbus_message_new_method_return(message)))
 554                         goto oom;
 555
 556         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "GetJob")) {
 557                 uint32_t id;
 558                 Job *j;
 559
 560                 if (!dbus_message_get_args(
 561                                     message,
 562                                     &error,
 563                                     DBUS_TYPE_UINT32, &id,
 564                                     DBUS_TYPE_INVALID))
 565                         return bus_send_error_reply(connection, message, &error, -EINVAL);
 566
 567                 if (!(j = manager_get_job(m, id))) {
 568                         dbus_set_error(&error, BUS_ERROR_NO_SUCH_JOB, "Job %u does not exist.", (unsigned) id);
 569                         return bus_send_error_reply(connection, message, &error, -ENOENT);
 570                 }
 571
 572                 if (!(reply = dbus_message_new_method_return(message)))
 573                         goto oom;
 574
 575                 if (!(path = job_dbus_path(j)))
 576                         goto oom;
 577
 578                 if (!dbus_message_append_args(
 579                                     reply,
 580                                     DBUS_TYPE_OBJECT_PATH, &path,
 581                                     DBUS_TYPE_INVALID))
 582                         goto oom;
 583
 584         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ClearJobs")) {
 585
 586                 manager_clear_jobs(m);
 587
 588                 if (!(reply = dbus_message_new_method_return(message)))
 589                         goto oom;
 590
 591         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ResetFailed")) {
 592
 593                 manager_reset_failed(m);
 594
 595                 if (!(reply = dbus_message_new_method_return(message)))
 596                         goto oom;
 597
 598         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ResetFailedUnit")) {
 599                 const char *name;
 600                 Unit *u;
 601
 602                 if (!dbus_message_get_args(
 603                                     message,
 604                                     &error,
 605                                     DBUS_TYPE_STRING, &name,
 606                                     DBUS_TYPE_INVALID))
 607                         return bus_send_error_reply(connection, message, &error, -EINVAL);
 608
 609                 if (!(u = manager_get_unit(m, name))) {
 610                         dbus_set_error(&error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s is not loaded.", name);
 611                         return bus_send_error_reply(connection, message, &error, -ENOENT);
 612                 }
 613
 614                 unit_reset_failed(u);
 615
 616                 if (!(reply = dbus_message_new_method_return(message)))
 617                         goto oom;
 618
 619         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ListUnits")) {
 620                 DBusMessageIter iter, sub;
 621                 Iterator i;
 622                 Unit *u;
 623                 const char *k;
 624
 625                 if (!(reply = dbus_message_new_method_return(message)))
 626                         goto oom;
 627
 628                 dbus_message_iter_init_append(reply, &iter);
 629
 630                 if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(ssssssouso)", &sub))
 631                         goto oom;
 632
 633                 HASHMAP_FOREACH_KEY(u, k, m->units, i) {
 634                         char *u_path, *j_path;
 635                         const char *description, *load_state, *active_state, *sub_state, *sjob_type, *following;
 636                         DBusMessageIter sub2;
 637                         uint32_t job_id;
 638                         Unit *f;
 639
 640                         if (k != u->meta.id)
 641                                 continue;
 642
 643                         if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2))
 644                                 goto oom;
 645
 646                         description = unit_description(u);
 647                         load_state = unit_load_state_to_string(u->meta.load_state);
 648                         active_state = unit_active_state_to_string(unit_active_state(u));
 649                         sub_state = unit_sub_state_to_string(u);
 650
 651                         f = unit_following(u);
 652                         following = f ? f->meta.id : "";
 653
 654                         if (!(u_path = unit_dbus_path(u)))
 655                                 goto oom;
 656
 657                         if (u->meta.job) {
 658                                 job_id = (uint32_t) u->meta.job->id;
 659
 660                                 if (!(j_path = job_dbus_path(u->meta.job))) {
 661                                         free(u_path);
 662                                         goto oom;
 663                                 }
 664
 665                                 sjob_type = job_type_to_string(u->meta.job->type);
 666                         } else {
 667                                 job_id = 0;
 668                                 j_path = u_path;
 669                                 sjob_type = "";
 670                         }
 671
 672                         if (!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &u->meta.id) ||
 673                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &description) ||
 674                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &load_state) ||
 675                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &active_state) ||
 676                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &sub_state) ||
 677                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &following) ||
 678                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &u_path) ||
 679                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT32, &job_id) ||
 680                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &sjob_type) ||
 681                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &j_path)) {
 682                                 free(u_path);
 683                                 if (u->meta.job)
 684                                         free(j_path);
 685                                 goto oom;
 686                         }
 687
 688                         free(u_path);
 689                         if (u->meta.job)
 690                                 free(j_path);
 691
 692                         if (!dbus_message_iter_close_container(&sub, &sub2))
 693                                 goto oom;
 694                 }
 695
 696                 if (!dbus_message_iter_close_container(&iter, &sub))
 697                         goto oom;
 698
 699         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ListJobs")) {
 700                 DBusMessageIter iter, sub;
 701                 Iterator i;
 702                 Job *j;
 703
 704                 if (!(reply = dbus_message_new_method_return(message)))
 705                         goto oom;
 706
 707                 dbus_message_iter_init_append(reply, &iter);
 708
 709                 if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(usssoo)", &sub))
 710                         goto oom;
 711
 712                 HASHMAP_FOREACH(j, m->jobs, i) {
 713                         char *u_path, *j_path;
 714                         const char *state, *type;
 715                         uint32_t id;
 716                         DBusMessageIter sub2;
 717
 718                         if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2))
 719                                 goto oom;
 720
 721                         id = (uint32_t) j->id;
 722                         state = job_state_to_string(j->state);
 723                         type = job_type_to_string(j->type);
 724
 725                         if (!(j_path = job_dbus_path(j)))
 726                                 goto oom;
 727
 728                         if (!(u_path = unit_dbus_path(j->unit))) {
 729                                 free(j_path);
 730                                 goto oom;
 731                         }
 732
 733                         if (!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT32, &id) ||
 734                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &j->unit->meta.id) ||
 735                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &type) ||
 736                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &state) ||
 737                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &j_path) ||
 738                             !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &u_path)) {
 739                                 free(j_path);
 740                                 free(u_path);
 741                                 goto oom;
 742                         }
 743
 744                         free(j_path);
 745                         free(u_path);
 746
 747                         if (!dbus_message_iter_close_container(&sub, &sub2))
 748                                 goto oom;
 749                 }
 750
 751                 if (!dbus_message_iter_close_container(&iter, &sub))
 752                         goto oom;
 753
 754         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Subscribe")) {
 755                 char *client;
 756                 Set *s;
 757
 758                 if (!(s = BUS_CONNECTION_SUBSCRIBED(m, connection))) {
 759                         if (!(s = set_new(string_hash_func, string_compare_func)))
 760                                 goto oom;
 761
 762                         if (!(dbus_connection_set_data(connection, m->subscribed_data_slot, s, NULL))) {
 763                                 set_free(s);
 764                                 goto oom;
 765                         }
 766                 }
 767
 768                 if (!(client = strdup(message_get_sender_with_fallback(message))))
 769                         goto oom;
 770
 771                 if ((r = set_put(s, client)) < 0) {
 772                         free(client);
 773                         return bus_send_error_reply(connection, message, NULL, r);
 774                 }
 775
 776                 if (!(reply = dbus_message_new_method_return(message)))
 777                         goto oom;
 778
 779         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Unsubscribe")) {
 780                 char *client;
 781
 782                 if (!(client = set_remove(BUS_CONNECTION_SUBSCRIBED(m, connection), (char*) message_get_sender_with_fallback(message)))) {
 783                         dbus_set_error(&error, BUS_ERROR_NOT_SUBSCRIBED, "Client is not subscribed.");
 784                         return bus_send_error_reply(connection, message, &error, -ENOENT);
 785                 }
 786
 787                 free(client);
 788
 789                 if (!(reply = dbus_message_new_method_return(message)))
 790                         goto oom;
 791
 792         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Dump")) {
 793                 FILE *f;
 794                 char *dump = NULL;
 795                 size_t size;
 796
 797                 if (!(reply = dbus_message_new_method_return(message)))
 798                         goto oom;
 799
 800                 if (!(f = open_memstream(&dump, &size)))
 801                         goto oom;
 802
 803                 manager_dump_units(m, f, NULL);
 804                 manager_dump_jobs(m, f, NULL);
 805
 806                 if (ferror(f)) {
 807                         fclose(f);
 808                         free(dump);
 809                         goto oom;
 810                 }
 811
 812                 fclose(f);
 813
 814                 if (!dbus_message_append_args(reply, DBUS_TYPE_STRING, &dump, DBUS_TYPE_INVALID)) {
 815                         free(dump);
 816                         goto oom;
 817                 }
 818
 819                 free(dump);
 820         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "CreateSnapshot")) {
 821                 const char *name;
 822                 dbus_bool_t cleanup;
 823                 Snapshot *s;
 824
 825                 if (!dbus_message_get_args(
 826                                     message,
 827                                     &error,
 828                                     DBUS_TYPE_STRING, &name,
 829                                     DBUS_TYPE_BOOLEAN, &cleanup,
 830                                     DBUS_TYPE_INVALID))
 831                         return bus_send_error_reply(connection, message, &error, -EINVAL);
 832
 833                 if (name && name[0] == 0)
 834                         name = NULL;
 835
 836                 if ((r = snapshot_create(m, name, cleanup, &error, &s)) < 0)
 837                         return bus_send_error_reply(connection, message, &error, r);
 838
 839                 if (!(reply = dbus_message_new_method_return(message)))
 840                         goto oom;
 841
 842                 if (!(path = unit_dbus_path(UNIT(s))))
 843                         goto oom;
 844
 845                 if (!dbus_message_append_args(
 846                                     reply,
 847                                     DBUS_TYPE_OBJECT_PATH, &path,
 848                                     DBUS_TYPE_INVALID))
 849                         goto oom;
 850
 851         } else if (dbus_message_is_method_call(message, "org.freedesktop.DBus.Introspectable", "Introspect")) {
 852                 char *introspection = NULL;
 853                 FILE *f;
 854                 Iterator i;
 855                 Unit *u;
 856                 Job *j;
 857                 const char *k;
 858                 size_t size;
 859
 860                 if (!(reply = dbus_message_new_method_return(message)))
 861                         goto oom;
 862
 863                 /* We roll our own introspection code here, instead of
 864                  * relying on bus_default_message_handler() because we
 865                  * need to generate our introspection string
 866                  * dynamically. */
 867
 868                 if (!(f = open_memstream(&introspection, &size)))
 869                         goto oom;
 870
 871                 fputs(INTROSPECTION_BEGIN, f);
 872
 873                 HASHMAP_FOREACH_KEY(u, k, m->units, i) {
 874                         char *p;
 875
 876                         if (k != u->meta.id)
 877                                 continue;
 878
 879                         if (!(p = bus_path_escape(k))) {
 880                                 fclose(f);
 881                                 free(introspection);
 882                                 goto oom;
 883                         }
 884
 885                         fprintf(f, "<node name=\"unit/%s\"/>", p);
 886                         free(p);
 887                 }
 888
 889                 HASHMAP_FOREACH(j, m->jobs, i)
 890                         fprintf(f, "<node name=\"job/%lu\"/>", (unsigned long) j->id);
 891
 892                 fputs(INTROSPECTION_END, f);
 893
 894                 if (ferror(f)) {
 895                         fclose(f);
 896                         free(introspection);
 897                         goto oom;
 898                 }
 899
 900                 fclose(f);
 901
 902                 if (!introspection)
 903                         goto oom;
 904
 905                 if (!dbus_message_append_args(reply, DBUS_TYPE_STRING, &introspection, DBUS_TYPE_INVALID)) {
 906                         free(introspection);
 907                         goto oom;
 908                 }
 909
 910                 free(introspection);
 911
 912         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Reload")) {
 913
 914                 assert(!m->queued_message);
 915
 916                 /* Instead of sending the reply back right away, we
 917                  * just remember that we need to and then send it
 918                  * after the reload is finished. That way the caller
 919                  * knows when the reload finished. */
 920
 921                 if (!(m->queued_message = dbus_message_new_method_return(message)))
 922                         goto oom;
 923
 924                 m->queued_message_connection = connection;
 925                 m->exit_code = MANAGER_RELOAD;
 926
 927         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Reexecute")) {
 928
 929                 /* We don't send a reply back here, the client should
 930                  * just wait for us disconnecting. */
 931
 932                 m->exit_code = MANAGER_REEXECUTE;
 933
 934         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Exit")) {
 935
 936                 if (m->running_as == MANAGER_SYSTEM) {
 937                         dbus_set_error(&error, BUS_ERROR_NOT_SUPPORTED, "Exit is only supported for user service managers.");
 938                         return bus_send_error_reply(connection, message, &error, -ENOTSUP);
 939                 }
 940
 941                 if (!(reply = dbus_message_new_method_return(message)))
 942                         goto oom;
 943
 944                 m->exit_code = MANAGER_EXIT;
 945
 946         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Reboot")) {
 947
 948                 if (m->running_as != MANAGER_SYSTEM) {
 949                         dbus_set_error(&error, BUS_ERROR_NOT_SUPPORTED, "Reboot is only supported for system managers.");
 950                         return bus_send_error_reply(connection, message, &error, -ENOTSUP);
 951                 }
 952
 953                 if (!(reply = dbus_message_new_method_return(message)))
 954                         goto oom;
 955
 956                 m->exit_code = MANAGER_REBOOT;
 957
 958         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "PowerOff")) {
 959
 960                 if (m->running_as != MANAGER_SYSTEM) {
 961                         dbus_set_error(&error, BUS_ERROR_NOT_SUPPORTED, "Powering off is only supported for system managers.");
 962                         return bus_send_error_reply(connection, message, &error, -ENOTSUP);
 963                 }
 964
 965                 if (!(reply = dbus_message_new_method_return(message)))
 966                         goto oom;
 967
 968                 m->exit_code = MANAGER_POWEROFF;
 969
 970         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Halt")) {
 971
 972                 if (m->running_as != MANAGER_SYSTEM) {
 973                         dbus_set_error(&error, BUS_ERROR_NOT_SUPPORTED, "Halting is only supported for system managers.");
 974                         return bus_send_error_reply(connection, message, &error, -ENOTSUP);
 975                 }
 976
 977                 if (!(reply = dbus_message_new_method_return(message)))
 978                         goto oom;
 979
 980                 m->exit_code = MANAGER_HALT;
 981
 982         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "KExec")) {
 983
 984                 if (m->running_as != MANAGER_SYSTEM) {
 985                         dbus_set_error(&error, BUS_ERROR_NOT_SUPPORTED, "kexec is only supported for system managers.");
 986                         return bus_send_error_reply(connection, message, &error, -ENOTSUP);
 987                 }
 988
 989                 if (!(reply = dbus_message_new_method_return(message)))
 990                         goto oom;
 991
 992                 m->exit_code = MANAGER_KEXEC;
 993
 994         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "SetEnvironment")) {
 995                 char **l = NULL, **e = NULL;
 996
 997                 if ((r = bus_parse_strv(message, &l)) < 0) {
 998                         if (r == -ENOMEM)
 999                                 goto oom;
1000
1001                         return bus_send_error_reply(connection, message, NULL, r);
1002                 }
1003
1004                 e = strv_env_merge(2, m->environment, l);
1005                 strv_free(l);
1006
1007                 if (!e)
1008                         goto oom;
1009
1010                 if (!(reply = dbus_message_new_method_return(message))) {
1011                         strv_free(e);
1012                         goto oom;
1013                 }
1014
1015                 strv_free(m->environment);
1016                 m->environment = e;
1017
1018         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "UnsetEnvironment")) {
1019                 char **l = NULL, **e = NULL;
1020
1021                 if ((r = bus_parse_strv(message, &l)) < 0) {
1022                         if (r == -ENOMEM)
1023                                 goto oom;
1024
1025                         return bus_send_error_reply(connection, message, NULL, r);
1026                 }
1027
1028                 e = strv_env_delete(m->environment, 1, l);
1029                 strv_free(l);
1030
1031                 if (!e)
1032                         goto oom;
1033
1034                 if (!(reply = dbus_message_new_method_return(message))) {
1035                         strv_free(e);
1036                         goto oom;
1037                 }
1038
1039                 strv_free(m->environment);
1040                 m->environment = e;
1041
1042         } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "UnsetAndSetEnvironment")) {
1043                 char **l_set = NULL, **l_unset = NULL, **e = NULL, **f = NULL;
1044                 DBusMessageIter iter;
1045
1046                 if (!dbus_message_iter_init(message, &iter))
1047                         return bus_send_error_reply(connection, message, NULL, -EINVAL);
1048
1049                 r = bus_parse_strv_iter(&iter, &l_unset);
1050                 if (r < 0) {
1051                         if (r == -ENOMEM)
1052                                 goto oom;
1053
1054                         return bus_send_error_reply(connection, message, NULL, r);
1055                 }
1056
1057                 if (!dbus_message_iter_next(&iter)) {
1058                         strv_free(l_unset);
1059                         return bus_send_error_reply(connection, message, NULL, -EINVAL);
1060                 }
1061
1062                 r = bus_parse_strv_iter(&iter, &l_set);
1063                 if (r < 0) {
1064                         strv_free(l_unset);
1065                         if (r == -ENOMEM)
1066                                 goto oom;
1067
1068                         return bus_send_error_reply(connection, message, NULL, r);
1069                 }
1070
1071                 e = strv_env_delete(m->environment, 1, l_unset);
1072                 strv_free(l_unset);
1073
1074                 if (!e) {
1075                         strv_free(l_set);
1076                         goto oom;
1077                 }
1078
1079                 f = strv_env_merge(2, e, l_set);
1080                 strv_free(l_set);
1081                 strv_free(e);
1082
1083                 if (!f)
1084                         goto oom;
1085
1086                 if (!(reply = dbus_message_new_method_return(message))) {
1087                         strv_free(f);
1088                         goto oom;
1089                 }
1090
1091                 strv_free(m->environment);
1092                 m->environment = f;
1093
1094         } else
1095                 return bus_default_message_handler(connection, message, NULL, INTERFACES_LIST, properties);
1096
1097         if (job_type != _JOB_TYPE_INVALID) {
1098                 const char *name, *smode, *old_name = NULL;
1099                 JobMode mode;
1100                 Job *j;
1101                 Unit *u;
1102                 bool b;
1103
1104                 if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "StartUnitReplace"))
1105                         b = dbus_message_get_args(
1106                                         message,
1107                                         &error,
1108                                         DBUS_TYPE_STRING, &old_name,
1109                                         DBUS_TYPE_STRING, &name,
1110                                         DBUS_TYPE_STRING, &smode,
1111                                         DBUS_TYPE_INVALID);
1112                 else
1113                         b = dbus_message_get_args(
1114                                         message,
1115                                         &error,
1116                                         DBUS_TYPE_STRING, &name,
1117                                         DBUS_TYPE_STRING, &smode,
1118                                         DBUS_TYPE_INVALID);
1119
1120                 if (!b)
1121                         return bus_send_error_reply(connection, message, &error, -EINVAL);
1122
1123                 if (old_name)
1124                         if (!(u = manager_get_unit(m, old_name)) ||
1125                             !u->meta.job ||
1126                             u->meta.job->type != JOB_START) {
1127                                 dbus_set_error(&error, BUS_ERROR_NO_SUCH_JOB, "No job queued for unit %s", old_name);
1128                                 return bus_send_error_reply(connection, message, &error, -ENOENT);
1129                         }
1130
1131
1132                 if ((mode = job_mode_from_string(smode)) == _JOB_MODE_INVALID) {
1133                         dbus_set_error(&error, BUS_ERROR_INVALID_JOB_MODE, "Job mode %s is invalid.", smode);
1134                         return bus_send_error_reply(connection, message, &error, -EINVAL);
1135                 }
1136
1137                 if ((r = manager_load_unit(m, name, NULL, &error, &u)) < 0)
1138                         return bus_send_error_reply(connection, message, &error, r);
1139
1140                 if (reload_if_possible && unit_can_reload(u)) {
1141                         if (job_type == JOB_RESTART)
1142                                 job_type = JOB_RELOAD_OR_START;
1143                         else if (job_type == JOB_TRY_RESTART)
1144                                 job_type = JOB_RELOAD;
1145                 }
1146
1147                 if ((job_type == JOB_START && u->meta.refuse_manual_start) ||
1148                     (job_type == JOB_STOP && u->meta.refuse_manual_stop) ||
1149                     ((job_type == JOB_RESTART || job_type == JOB_TRY_RESTART) &&
1150                      (u->meta.refuse_manual_start || u->meta.refuse_manual_stop))) {
1151                         dbus_set_error(&error, BUS_ERROR_ONLY_BY_DEPENDENCY, "Operation refused, may be requested by dependency only.");
1152                         return bus_send_error_reply(connection, message, &error, -EPERM);
1153                 }
1154
1155                 if ((r = manager_add_job(m, job_type, u, mode, true, &error, &j)) < 0)
1156                         return bus_send_error_reply(connection, message, &error, r);
1157
1158                 if (!(j->bus_client = strdup(message_get_sender_with_fallback(message))))
1159                         goto oom;
1160
1161                 j->bus = connection;
1162
1163                 if (!(reply = dbus_message_new_method_return(message)))
1164                         goto oom;
1165
1166                 if (!(path = job_dbus_path(j)))
1167                         goto oom;
1168
1169                 if (!dbus_message_append_args(
1170                                     reply,
1171                                     DBUS_TYPE_OBJECT_PATH, &path,
1172                                     DBUS_TYPE_INVALID))
1173                         goto oom;
1174         }
1175
1176         if (reply) {
1177                 if (!dbus_connection_send(connection, reply, NULL))
1178                         goto oom;
1179
1180                 dbus_message_unref(reply);
1181         }
1182
1183         free(path);
1184
1185         return DBUS_HANDLER_RESULT_HANDLED;
1186
1187 oom:
1188         free(path);
1189
1190         if (reply)
1191                 dbus_message_unref(reply);
1192
1193         dbus_error_free(&error);
1194
1195         return DBUS_HANDLER_RESULT_NEED_MEMORY;
1196 }
1197
1198 const DBusObjectPathVTable bus_manager_vtable = {
1199         .message_function = bus_manager_message_handler
1200 };