blob: c8253c7940d77228fd3f9292185a7af4b4dadc10 [file] [log] [blame] [raw]
/* SPDX-License-Identifier: LGPL-2.1+ */
#include "alloc-util.h"
#include "bus-util.h"
#include "dbus-cgroup.h"
#include "dbus-execute.h"
#include "dbus-kill.h"
#include "dbus-socket.h"
#include "dbus-util.h"
#include "fd-util.h"
#include "ip-protocol-list.h"
#include "parse-util.h"
#include "path-util.h"
#include "socket.h"
#include "socket-netlink.h"
#include "socket-util.h"
#include "string-util.h"
#include "unit.h"
static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_result, socket_result, SocketResult);
static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_bind_ipv6_only, socket_address_bind_ipv6_only, SocketAddressBindIPv6Only);
static BUS_DEFINE_PROPERTY_GET(property_get_fdname, "s", Socket, socket_fdname);
static int property_get_listen(
sd_bus *bus,
const char *path,
const char *interface,
const char *property,
sd_bus_message *reply,
void *userdata,
sd_bus_error *error) {
Socket *s = SOCKET(userdata);
SocketPort *p;
int r;
assert(bus);
assert(reply);
assert(s);
r = sd_bus_message_open_container(reply, 'a', "(ss)");
if (r < 0)
return r;
LIST_FOREACH(port, p, s->ports) {
_cleanup_free_ char *address = NULL;
const char *a;
switch (p->type) {
case SOCKET_SOCKET: {
r = socket_address_print(&p->address, &address);
if (r)
return r;
a = address;
break;
}
case SOCKET_SPECIAL:
case SOCKET_MQUEUE:
case SOCKET_FIFO:
case SOCKET_USB_FUNCTION:
a = p->path;
break;
default:
assert_not_reached("Unknown socket type");
}
r = sd_bus_message_append(reply, "(ss)", socket_port_type_to_string(p), a);
if (r < 0)
return r;
}
return sd_bus_message_close_container(reply);
}
const sd_bus_vtable bus_socket_vtable[] = {
SD_BUS_VTABLE_START(0),
SD_BUS_PROPERTY("BindIPv6Only", "s", property_get_bind_ipv6_only, offsetof(Socket, bind_ipv6_only), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("Backlog", "u", bus_property_get_unsigned, offsetof(Socket, backlog), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("TimeoutUSec", "t", bus_property_get_usec, offsetof(Socket, timeout_usec), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("BindToDevice", "s", NULL, offsetof(Socket, bind_to_device), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("SocketUser", "s", NULL, offsetof(Socket, user), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("SocketGroup", "s", NULL, offsetof(Socket, group), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("SocketMode", "u", bus_property_get_mode, offsetof(Socket, socket_mode), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("DirectoryMode", "u", bus_property_get_mode, offsetof(Socket, directory_mode), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("Accept", "b", bus_property_get_bool, offsetof(Socket, accept), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("Writable", "b", bus_property_get_bool, offsetof(Socket, writable), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("KeepAlive", "b", bus_property_get_bool, offsetof(Socket, keep_alive), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("KeepAliveTimeUSec", "t", bus_property_get_usec, offsetof(Socket, keep_alive_time), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("KeepAliveIntervalUSec", "t", bus_property_get_usec, offsetof(Socket, keep_alive_interval), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("KeepAliveProbes", "u", bus_property_get_unsigned, offsetof(Socket, keep_alive_cnt), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("DeferAcceptUSec" , "t", bus_property_get_usec, offsetof(Socket, defer_accept), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("NoDelay", "b", bus_property_get_bool, offsetof(Socket, no_delay), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("Priority", "i", bus_property_get_int, offsetof(Socket, priority), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("ReceiveBuffer", "t", bus_property_get_size, offsetof(Socket, receive_buffer), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("SendBuffer", "t", bus_property_get_size, offsetof(Socket, send_buffer), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("IPTOS", "i", bus_property_get_int, offsetof(Socket, ip_tos), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("IPTTL", "i", bus_property_get_int, offsetof(Socket, ip_ttl), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("PipeSize", "t", bus_property_get_size, offsetof(Socket, pipe_size), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("FreeBind", "b", bus_property_get_bool, offsetof(Socket, free_bind), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("Transparent", "b", bus_property_get_bool, offsetof(Socket, transparent), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("Broadcast", "b", bus_property_get_bool, offsetof(Socket, broadcast), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("PassCredentials", "b", bus_property_get_bool, offsetof(Socket, pass_cred), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("PassSecurity", "b", bus_property_get_bool, offsetof(Socket, pass_sec), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("RemoveOnStop", "b", bus_property_get_bool, offsetof(Socket, remove_on_stop), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("Listen", "a(ss)", property_get_listen, 0, SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("Symlinks", "as", NULL, offsetof(Socket, symlinks), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("Mark", "i", bus_property_get_int, offsetof(Socket, mark), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("MaxConnections", "u", bus_property_get_unsigned, offsetof(Socket, max_connections), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("MaxConnectionsPerSource", "u", bus_property_get_unsigned, offsetof(Socket, max_connections_per_source), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("MessageQueueMaxMessages", "x", bus_property_get_long, offsetof(Socket, mq_maxmsg), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("MessageQueueMessageSize", "x", bus_property_get_long, offsetof(Socket, mq_msgsize), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("TCPCongestion", "s", NULL, offsetof(Socket, tcp_congestion), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("ReusePort", "b", bus_property_get_bool, offsetof(Socket, reuse_port), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("SmackLabel", "s", NULL, offsetof(Socket, smack), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("SmackLabelIPIn", "s", NULL, offsetof(Socket, smack_ip_in), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("SmackLabelIPOut", "s", NULL, offsetof(Socket, smack_ip_out), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("ControlPID", "u", bus_property_get_pid, offsetof(Socket, control_pid), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
SD_BUS_PROPERTY("Result", "s", property_get_result, offsetof(Socket, result), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
SD_BUS_PROPERTY("NConnections", "u", bus_property_get_unsigned, offsetof(Socket, n_connections), 0),
SD_BUS_PROPERTY("NAccepted", "u", bus_property_get_unsigned, offsetof(Socket, n_accepted), 0),
SD_BUS_PROPERTY("NRefused", "u", bus_property_get_unsigned, offsetof(Socket, n_refused), 0),
SD_BUS_PROPERTY("FileDescriptorName", "s", property_get_fdname, 0, 0),
SD_BUS_PROPERTY("SocketProtocol", "i", bus_property_get_int, offsetof(Socket, socket_protocol), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("TriggerLimitIntervalUSec", "t", bus_property_get_usec, offsetof(Socket, trigger_limit.interval), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("TriggerLimitBurst", "u", bus_property_get_unsigned, offsetof(Socket, trigger_limit.burst), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("UID", "u", bus_property_get_uid, offsetof(Unit, ref_uid), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
SD_BUS_PROPERTY("GID", "u", bus_property_get_gid, offsetof(Unit, ref_gid), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
BUS_EXEC_COMMAND_LIST_VTABLE("ExecStartPre", offsetof(Socket, exec_command[SOCKET_EXEC_START_PRE]), SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION),
BUS_EXEC_COMMAND_LIST_VTABLE("ExecStartPost", offsetof(Socket, exec_command[SOCKET_EXEC_START_POST]), SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION),
BUS_EXEC_COMMAND_LIST_VTABLE("ExecStopPre", offsetof(Socket, exec_command[SOCKET_EXEC_STOP_PRE]), SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION),
BUS_EXEC_COMMAND_LIST_VTABLE("ExecStopPost", offsetof(Socket, exec_command[SOCKET_EXEC_STOP_POST]), SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION),
SD_BUS_VTABLE_END
};
static bool check_size_t_truncation(uint64_t t) {
return (size_t) t == t;
}
static const char* socket_protocol_to_string(int32_t i) {
if (i == IPPROTO_IP)
return "";
if (!IN_SET(i, IPPROTO_UDPLITE, IPPROTO_SCTP))
return NULL;
return ip_protocol_to_name(i);
}
static BUS_DEFINE_SET_TRANSIENT(int, "i", int32_t, int, "%" PRIi32);
static BUS_DEFINE_SET_TRANSIENT(message_queue, "x", int64_t, long, "%" PRIi64);
static BUS_DEFINE_SET_TRANSIENT_IS_VALID(size_t_check_truncation, "t", uint64_t, size_t, "%" PRIu64, check_size_t_truncation);
static BUS_DEFINE_SET_TRANSIENT_PARSE(bind_ipv6_only, SocketAddressBindIPv6Only, socket_address_bind_ipv6_only_or_bool_from_string);
static BUS_DEFINE_SET_TRANSIENT_STRING_WITH_CHECK(fdname, fdname_is_valid);
static BUS_DEFINE_SET_TRANSIENT_STRING_WITH_CHECK(ifname, ifname_valid);
static BUS_DEFINE_SET_TRANSIENT_TO_STRING_ALLOC(ip_tos, "i", int32_t, int, "%" PRIi32, ip_tos_to_string_alloc);
static BUS_DEFINE_SET_TRANSIENT_TO_STRING(socket_protocol, "i", int32_t, int, "%" PRIi32, socket_protocol_to_string);
static int bus_socket_set_transient_property(
Socket *s,
const char *name,
sd_bus_message *message,
UnitWriteFlags flags,
sd_bus_error *error) {
SocketExecCommand ci;
Unit *u = UNIT(s);
int r;
assert(s);
assert(name);
assert(message);
flags |= UNIT_PRIVATE;
if (streq(name, "Accept"))
return bus_set_transient_bool(u, name, &s->accept, message, flags, error);
if (streq(name, "Writable"))
return bus_set_transient_bool(u, name, &s->writable, message, flags, error);
if (streq(name, "KeepAlive"))
return bus_set_transient_bool(u, name, &s->keep_alive, message, flags, error);
if (streq(name, "NoDelay"))
return bus_set_transient_bool(u, name, &s->no_delay, message, flags, error);
if (streq(name, "FreeBind"))
return bus_set_transient_bool(u, name, &s->free_bind, message, flags, error);
if (streq(name, "Transparent"))
return bus_set_transient_bool(u, name, &s->transparent, message, flags, error);
if (streq(name, "Broadcast"))
return bus_set_transient_bool(u, name, &s->broadcast, message, flags, error);
if (streq(name, "PassCredentials"))
return bus_set_transient_bool(u, name, &s->pass_cred, message, flags, error);
if (streq(name, "PassSecurity"))
return bus_set_transient_bool(u, name, &s->pass_sec, message, flags, error);
if (streq(name, "ReusePort"))
return bus_set_transient_bool(u, name, &s->reuse_port, message, flags, error);
if (streq(name, "RemoveOnStop"))
return bus_set_transient_bool(u, name, &s->remove_on_stop, message, flags, error);
if (streq(name, "SELinuxContextFromNet"))
return bus_set_transient_bool(u, name, &s->selinux_context_from_net, message, flags, error);
if (streq(name, "Priority"))
return bus_set_transient_int(u, name, &s->priority, message, flags, error);
if (streq(name, "IPTTL"))
return bus_set_transient_int(u, name, &s->ip_ttl, message, flags, error);
if (streq(name, "Mark"))
return bus_set_transient_int(u, name, &s->mark, message, flags, error);
if (streq(name, "Backlog"))
return bus_set_transient_unsigned(u, name, &s->backlog, message, flags, error);
if (streq(name, "MaxConnections"))
return bus_set_transient_unsigned(u, name, &s->max_connections, message, flags, error);
if (streq(name, "MaxConnectionsPerSource"))
return bus_set_transient_unsigned(u, name, &s->max_connections_per_source, message, flags, error);
if (streq(name, "KeepAliveProbes"))
return bus_set_transient_unsigned(u, name, &s->keep_alive_cnt, message, flags, error);
if (streq(name, "TriggerLimitBurst"))
return bus_set_transient_unsigned(u, name, &s->trigger_limit.burst, message, flags, error);
if (streq(name, "SocketMode"))
return bus_set_transient_mode_t(u, name, &s->socket_mode, message, flags, error);
if (streq(name, "DirectoryMode"))
return bus_set_transient_mode_t(u, name, &s->directory_mode, message, flags, error);
if (streq(name, "MessageQueueMaxMessages"))
return bus_set_transient_message_queue(u, name, &s->mq_maxmsg, message, flags, error);
if (streq(name, "MessageQueueMessageSize"))
return bus_set_transient_message_queue(u, name, &s->mq_msgsize, message, flags, error);
if (streq(name, "TimeoutUSec"))
return bus_set_transient_usec_fix_0(u, name, &s->timeout_usec, message, flags, error);
if (streq(name, "KeepAliveTimeUSec"))
return bus_set_transient_usec(u, name, &s->keep_alive_time, message, flags, error);
if (streq(name, "KeepAliveIntervalUSec"))
return bus_set_transient_usec(u, name, &s->keep_alive_interval, message, flags, error);
if (streq(name, "DeferAcceptUSec"))
return bus_set_transient_usec(u, name, &s->defer_accept, message, flags, error);
if (streq(name, "TriggerLimitIntervalUSec"))
return bus_set_transient_usec(u, name, &s->trigger_limit.interval, message, flags, error);
if (streq(name, "SmackLabel"))
return bus_set_transient_string(u, name, &s->smack, message, flags, error);
if (streq(name, "SmackLabelIPin"))
return bus_set_transient_string(u, name, &s->smack_ip_in, message, flags, error);
if (streq(name, "SmackLabelIPOut"))
return bus_set_transient_string(u, name, &s->smack_ip_out, message, flags, error);
if (streq(name, "TCPCongestion"))
return bus_set_transient_string(u, name, &s->tcp_congestion, message, flags, error);
if (streq(name, "FileDescriptorName"))
return bus_set_transient_fdname(u, name, &s->fdname, message, flags, error);
if (streq(name, "SocketUser"))
return bus_set_transient_user_compat(u, name, &s->user, message, flags, error);
if (streq(name, "SocketGroup"))
return bus_set_transient_user_compat(u, name, &s->group, message, flags, error);
if (streq(name, "BindIPv6Only"))
return bus_set_transient_bind_ipv6_only(u, name, &s->bind_ipv6_only, message, flags, error);
if (streq(name, "ReceiveBuffer"))
return bus_set_transient_size_t_check_truncation(u, name, &s->receive_buffer, message, flags, error);
if (streq(name, "SendBuffer"))
return bus_set_transient_size_t_check_truncation(u, name, &s->send_buffer, message, flags, error);
if (streq(name, "PipeSize"))
return bus_set_transient_size_t_check_truncation(u, name, &s->pipe_size, message, flags, error);
if (streq(name, "BindToDevice"))
return bus_set_transient_ifname(u, name, &s->bind_to_device, message, flags, error);
if (streq(name, "IPTOS"))
return bus_set_transient_ip_tos(u, name, &s->ip_tos, message, flags, error);
if (streq(name, "SocketProtocol"))
return bus_set_transient_socket_protocol(u, name, &s->socket_protocol, message, flags, error);
ci = socket_exec_command_from_string(name);
if (ci >= 0)
return bus_set_transient_exec_command(u, name,
&s->exec_command[ci],
message, flags, error);
if (streq(name, "Symlinks")) {
_cleanup_strv_free_ char **l = NULL;
char **p;
r = sd_bus_message_read_strv(message, &l);
if (r < 0)
return r;
STRV_FOREACH(p, l) {
if (!path_is_absolute(*p))
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Symlink path is not absolute: %s", *p);
}
if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
if (strv_isempty(l)) {
s->symlinks = strv_free(s->symlinks);
unit_write_settingf(u, flags|UNIT_ESCAPE_SPECIFIERS, name, "%s=", name);
} else {
_cleanup_free_ char *joined = NULL;
r = strv_extend_strv(&s->symlinks, l, true);
if (r < 0)
return -ENOMEM;
joined = strv_join(l, " ");
if (!joined)
return -ENOMEM;
unit_write_settingf(u, flags|UNIT_ESCAPE_SPECIFIERS, name, "%s=%s", name, joined);
}
}
return 1;
} else if (streq(name, "Listen")) {
const char *t, *a;
bool empty = true;
r = sd_bus_message_enter_container(message, 'a', "(ss)");
if (r < 0)
return r;
while ((r = sd_bus_message_read(message, "(ss)", &t, &a)) > 0) {
_cleanup_free_ SocketPort *p = NULL;
p = new(SocketPort, 1);
if (!p)
return log_oom();
*p = (SocketPort) {
.fd = -1,
.socket = s,
};
p->type = socket_port_type_from_string(t);
if (p->type < 0)
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Unknown Socket type: %s", t);
if (p->type != SOCKET_SOCKET) {
if (!path_is_valid(p->path))
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid socket path: %s", t);
p->path = strdup(a);
if (!p->path)
return log_oom();
path_simplify(p->path, false);
} else if (streq(t, "Netlink")) {
r = socket_address_parse_netlink(&p->address, a);
if (r < 0)
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid netlink address: %s", a);
} else {
r = socket_address_parse(&p->address, a);
if (r < 0)
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid address: %s", a);
p->address.type = socket_address_type_from_string(t);
if (p->address.type < 0)
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid address type: %s", t);
if (socket_address_family(&p->address) != AF_LOCAL && p->address.type == SOCK_SEQPACKET)
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Address family not supported: %s", a);
}
empty = false;
if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
LIST_APPEND(port, s->ports, TAKE_PTR(p));
unit_write_settingf(u, flags|UNIT_ESCAPE_SPECIFIERS, name, "Listen%s=%s", t, a);
}
}
if (r < 0)
return r;
r = sd_bus_message_exit_container(message);
if (r < 0)
return r;
if (!UNIT_WRITE_FLAGS_NOOP(flags) && empty) {
socket_free_ports(s);
unit_write_settingf(u, flags|UNIT_ESCAPE_SPECIFIERS, name, "ListenStream=");
}
return 1;
}
return 0;
}
int bus_socket_set_property(
Unit *u,
const char *name,
sd_bus_message *message,
UnitWriteFlags flags,
sd_bus_error *error) {
Socket *s = SOCKET(u);
int r;
assert(s);
assert(name);
assert(message);
assert(s);
assert(name);
assert(message);
r = bus_cgroup_set_property(u, &s->cgroup_context, name, message, flags, error);
if (r != 0)
return r;
if (u->transient && u->load_state == UNIT_STUB) {
/* This is a transient unit, let's load a little more */
r = bus_socket_set_transient_property(s, name, message, flags, error);
if (r != 0)
return r;
r = bus_exec_context_set_transient_property(u, &s->exec_context, name, message, flags, error);
if (r != 0)
return r;
r = bus_kill_context_set_transient_property(u, &s->kill_context, name, message, flags, error);
if (r != 0)
return r;
}
return 0;
}
int bus_socket_commit_properties(Unit *u) {
assert(u);
unit_invalidate_cgroup_members_masks(u);
unit_realize_cgroup(u);
return 0;
}