src/core/dbus-socket.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 Lesser General Public License as published by
  10   the Free Software Foundation; either version 2.1 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   Lesser General Public License for more details.
  17
  18   You should have received a copy of the GNU Lesser General Public License
  19   along with systemd; If not, see <http://www.gnu.org/licenses/>.
  20 ***/
  21
  22 #include <errno.h>
  23
  24 #include "dbus-unit.h"
  25 #include "dbus-socket.h"
  26 #include "dbus-execute.h"
  27 #include "dbus-kill.h"
  28 #include "dbus-common.h"
  29 #include "selinux-access.h"
  30
  31 #define BUS_SOCKET_INTERFACE                                            \
  32         " <interface name=\"org.freedesktop.systemd1.Socket\">\n"       \
  33         "  <property name=\"BindIPv6Only\" type=\"b\" access=\"read\"/>\n" \
  34         "  <property name=\"Backlog\" type=\"u\" access=\"read\"/>\n"   \
  35         "  <property name=\"TimeoutUSec\" type=\"t\" access=\"read\"/>\n" \
  36         BUS_EXEC_COMMAND_INTERFACE("ExecStartPre")                      \
  37         BUS_EXEC_COMMAND_INTERFACE("ExecStartPost")                     \
  38         BUS_EXEC_COMMAND_INTERFACE("ExecStopPre")                       \
  39         BUS_EXEC_COMMAND_INTERFACE("ExecStopPost")                      \
  40         BUS_EXEC_CONTEXT_INTERFACE                                      \
  41         BUS_KILL_CONTEXT_INTERFACE                                      \
  42         BUS_UNIT_CGROUP_INTERFACE                                       \
  43         "  <property name=\"ControlPID\" type=\"u\" access=\"read\"/>\n" \
  44         "  <property name=\"BindToDevice\" type=\"s\" access=\"read\"/>\n" \
  45         "  <property name=\"DirectoryMode\" type=\"u\" access=\"read\"/>\n" \
  46         "  <property name=\"SocketMode\" type=\"u\" access=\"read\"/>\n" \
  47         "  <property name=\"Accept\" type=\"b\" access=\"read\"/>\n"    \
  48         "  <property name=\"KeepAlive\" type=\"b\" access=\"read\"/>\n" \
  49         "  <property name=\"Priority\" type=\"i\" access=\"read\"/>\n"  \
  50         "  <property name=\"ReceiveBuffer\" type=\"t\" access=\"read\"/>\n" \
  51         "  <property name=\"SendBuffer\" type=\"t\" access=\"read\"/>\n" \
  52         "  <property name=\"IPTOS\" type=\"i\" access=\"read\"/>\n"     \
  53         "  <property name=\"IPTTL\" type=\"i\" access=\"read\"/>\n"     \
  54         "  <property name=\"PipeSize\" type=\"t\" access=\"read\"/>\n"  \
  55         "  <property name=\"FreeBind\" type=\"b\" access=\"read\"/>\n"  \
  56         "  <property name=\"Transparent\" type=\"b\" access=\"read\"/>\n" \
  57         "  <property name=\"Broadcast\" type=\"b\" access=\"read\"/>\n" \
  58         "  <property name=\"PassCredentials\" type=\"b\" access=\"read\"/>\n" \
  59         "  <property name=\"PassSecurity\" type=\"b\" access=\"read\"/>\n" \
  60         "  <property name=\"Mark\" type=\"i\" access=\"read\"/>\n"      \
  61         "  <property name=\"MaxConnections\" type=\"u\" access=\"read\"/>\n" \
  62         "  <property name=\"NAccepted\" type=\"u\" access=\"read\"/>\n" \
  63         "  <property name=\"NConnections\" type=\"u\" access=\"read\"/>\n" \
  64         "  <property name=\"MessageQueueMaxMessages\" type=\"x\" access=\"read\"/>\n" \
  65         "  <property name=\"MessageQueueMessageSize\" type=\"x\" access=\"read\"/>\n" \
  66         "  <property name=\"Result\" type=\"s\" access=\"read\"/>\n"    \
  67         "  <property name=\"SmackLabel\" type=\"s\" access=\"read\"/>\n" \
  68         "  <property name=\"SmackLabelIPIn\" type=\"s\" access=\"read\"/>\n" \
  69         "  <property name=\"SmackLabelIPOut\" type=\"s\" access=\"read\"/>\n" \
  70         " </interface>\n"                                               \
  71
  72 #define INTROSPECTION                                                   \
  73         DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE                       \
  74         "<node>\n"                                                      \
  75         BUS_UNIT_INTERFACE                                              \
  76         BUS_SOCKET_INTERFACE                                            \
  77         BUS_PROPERTIES_INTERFACE                                        \
  78         BUS_PEER_INTERFACE                                              \
  79         BUS_INTROSPECTABLE_INTERFACE                                    \
  80         "</node>\n"
  81
  82 #define INTERFACES_LIST                              \
  83         BUS_UNIT_INTERFACES_LIST                     \
  84         "org.freedesktop.systemd1.Socket\0"
  85
  86 const char bus_socket_interface[] _introspect_("Socket") = BUS_SOCKET_INTERFACE;
  87
  88 const char bus_socket_invalidating_properties[] =
  89         "ExecStartPre\0"
  90         "ExecStartPost\0"
  91         "ExecStopPre\0"
  92         "ExecStopPost\0"
  93         "ControlPID\0"
  94         "NAccepted\0"
  95         "NConnections\0"
  96         "Result\0";
  97
  98 static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_socket_append_bind_ipv6_only, socket_address_bind_ipv6_only, SocketAddressBindIPv6Only);
  99 static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_socket_append_socket_result, socket_result, SocketResult);
 100
 101 static const BusProperty bus_socket_properties[] = {
 102         { "BindIPv6Only",   bus_socket_append_bind_ipv6_only,  "s", offsetof(Socket, bind_ipv6_only)  },
 103         { "Backlog",        bus_property_append_unsigned,      "u", offsetof(Socket, backlog)         },
 104         { "TimeoutUSec",    bus_property_append_usec,          "t", offsetof(Socket, timeout_usec)    },
 105         BUS_EXEC_COMMAND_PROPERTY("ExecStartPre",  offsetof(Socket, exec_command[SOCKET_EXEC_START_PRE]),  true ),
 106         BUS_EXEC_COMMAND_PROPERTY("ExecStartPost", offsetof(Socket, exec_command[SOCKET_EXEC_START_POST]), true ),
 107         BUS_EXEC_COMMAND_PROPERTY("ExecStopPre",   offsetof(Socket, exec_command[SOCKET_EXEC_STOP_PRE]),   true ),
 108         BUS_EXEC_COMMAND_PROPERTY("ExecStopPost",  offsetof(Socket, exec_command[SOCKET_EXEC_STOP_POST]),  true ),
 109         { "ControlPID",     bus_property_append_pid,           "u", offsetof(Socket, control_pid)     },
 110         { "BindToDevice",   bus_property_append_string,        "s", offsetof(Socket, bind_to_device), true },
 111         { "DirectoryMode",  bus_property_append_mode,          "u", offsetof(Socket, directory_mode)  },
 112         { "SocketMode",     bus_property_append_mode,          "u", offsetof(Socket, socket_mode)     },
 113         { "Accept",         bus_property_append_bool,          "b", offsetof(Socket, accept)          },
 114         { "KeepAlive",      bus_property_append_bool,          "b", offsetof(Socket, keep_alive)      },
 115         { "Priority",       bus_property_append_int,           "i", offsetof(Socket, priority)        },
 116         { "ReceiveBuffer",  bus_property_append_size,          "t", offsetof(Socket, receive_buffer)  },
 117         { "SendBuffer",     bus_property_append_size,          "t", offsetof(Socket, send_buffer)     },
 118         { "IPTOS",          bus_property_append_int,           "i", offsetof(Socket, ip_tos)          },
 119         { "IPTTL",          bus_property_append_int,           "i", offsetof(Socket, ip_ttl)          },
 120         { "PipeSize",       bus_property_append_size,          "t", offsetof(Socket, pipe_size)       },
 121         { "FreeBind",       bus_property_append_bool,          "b", offsetof(Socket, free_bind)       },
 122         { "Transparent",    bus_property_append_bool,          "b", offsetof(Socket, transparent)     },
 123         { "Broadcast",      bus_property_append_bool,          "b", offsetof(Socket, broadcast)       },
 124         { "PassCredentials",bus_property_append_bool,          "b", offsetof(Socket, pass_cred)       },
 125         { "PassSecurity",   bus_property_append_bool,          "b", offsetof(Socket, pass_sec)        },
 126         { "Mark",           bus_property_append_int,           "i", offsetof(Socket, mark)            },
 127         { "MaxConnections", bus_property_append_unsigned,      "u", offsetof(Socket, max_connections) },
 128         { "NConnections",   bus_property_append_unsigned,      "u", offsetof(Socket, n_connections)   },
 129         { "NAccepted",      bus_property_append_unsigned,      "u", offsetof(Socket, n_accepted)      },
 130         { "MessageQueueMaxMessages", bus_property_append_long, "x", offsetof(Socket, mq_maxmsg)       },
 131         { "MessageQueueMessageSize", bus_property_append_long, "x", offsetof(Socket, mq_msgsize)      },
 132         { "Result",         bus_socket_append_socket_result,   "s", offsetof(Socket, result)          },
 133         { "SmackLabel",     bus_property_append_string,        "s", offsetof(Socket, smack),          true },
 134         { "SmackLabelIPIn", bus_property_append_string,        "s", offsetof(Socket, smack_ip_in),    true },
 135         { "SmackLabelIPOut",bus_property_append_string,        "s", offsetof(Socket, smack_ip_out),   true },
 136         { NULL, }
 137 };
 138
 139 DBusHandlerResult bus_socket_message_handler(Unit *u, DBusConnection *c, DBusMessage *message) {
 140         Socket *s = SOCKET(u);
 141         const BusBoundProperties bps[] = {
 142                 { "org.freedesktop.systemd1.Unit",   bus_unit_properties,         u },
 143                 { "org.freedesktop.systemd1.Socket", bus_socket_properties,       s },
 144                 { "org.freedesktop.systemd1.Socket", bus_exec_context_properties, &s->exec_context },
 145                 { "org.freedesktop.systemd1.Socket", bus_kill_context_properties, &s->kill_context },
 146                 { "org.freedesktop.systemd1.Socket", bus_unit_properties,         u },
 147                 { NULL, }
 148         };
 149
 150         SELINUX_UNIT_ACCESS_CHECK(u, c, message, "status");
 151
 152         return bus_default_message_handler(c, message, INTROSPECTION, INTERFACES_LIST, bps);
 153 }