mirror of
https://github.com/systemd/systemd.git
synced 2024-11-14 15:21:37 +03:00
e23bc0e7ca
The lovely libvirtd goes into crazy mode if it receives broadcasts that
it didn't subscribe to. With bus-proxyd, this might happen in 2 cases:
1) The kernel passes us an unmatched signal due to a false-positive
bloom-match.
2) We generate NameOwnerChanged/NameAcquired/NameLost locally even
though the peer didn't subscribe to it.
dbus-daemon is reliable in what signals it passes on. So make sure we
follow that style. Never ever send a signal to a local peer if it doesn't
match an installed filter of that peer.
691 lines
31 KiB
C
691 lines
31 KiB
C
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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/***
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This file is part of systemd.
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Copyright 2010 Lennart Poettering
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Copyright 2013 Daniel Mack
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Copyright 2014 Kay Sievers
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include <string.h>
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#include <errno.h>
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#include <stddef.h>
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#include "util.h"
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#include "sd-bus.h"
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#include "bus-internal.h"
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#include "bus-message.h"
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#include "bus-util.h"
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#include "strv.h"
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#include "set.h"
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#include "driver.h"
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#include "proxy.h"
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#include "synthesize.h"
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static int get_creds_by_name(sd_bus *bus, const char *name, uint64_t mask, sd_bus_creds **_creds, sd_bus_error *error) {
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_cleanup_bus_creds_unref_ sd_bus_creds *c = NULL;
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int r;
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assert(bus);
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assert(name);
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assert(_creds);
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r = sd_bus_get_name_creds(bus, name, mask, &c);
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if (r == -ESRCH || r == -ENXIO)
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return sd_bus_error_setf(error, SD_BUS_ERROR_NAME_HAS_NO_OWNER, "Name %s is currently not owned by anyone.", name);
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if (r < 0)
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return r;
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*_creds = c;
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c = NULL;
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return 0;
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}
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static int get_creds_by_message(sd_bus *bus, sd_bus_message *m, uint64_t mask, sd_bus_creds **_creds, sd_bus_error *error) {
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const char *name;
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int r;
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assert(bus);
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assert(m);
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assert(_creds);
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r = sd_bus_message_read(m, "s", &name);
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if (r < 0)
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return r;
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return get_creds_by_name(bus, name, mask, _creds, error);
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}
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int bus_proxy_process_driver(Proxy *p, sd_bus *a, sd_bus *b, sd_bus_message *m, SharedPolicy *sp, const struct ucred *ucred, Set *owned_names) {
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int r;
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assert(a);
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assert(b);
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assert(m);
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if (!a->is_kernel)
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return 0;
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if (!streq_ptr(sd_bus_message_get_destination(m), "org.freedesktop.DBus"))
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return 0;
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/* The "Hello()" call is is handled in process_hello() */
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if (sd_bus_message_is_method_call(m, "org.freedesktop.DBus.Introspectable", "Introspect")) {
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if (!sd_bus_message_has_signature(m, ""))
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return synthetic_reply_method_error(m, &SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_INVALID_ARGS, "Invalid parameters"));
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return synthetic_reply_method_return(m, "s",
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"<!DOCTYPE node PUBLIC \"-//freedesktop//DTD D-BUS Object Introspection 1.0//EN\" "
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"\"http://www.freedesktop.org/standards/dbus/1.0/introspect.dtd\">\n"
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"<node>\n"
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" <interface name=\"org.freedesktop.DBus.Introspectable\">\n"
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" <method name=\"Introspect\">\n"
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" <arg name=\"data\" type=\"s\" direction=\"out\"/>\n"
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" </method>\n"
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" </interface>\n"
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" <interface name=\"org.freedesktop.DBus\">\n"
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" <method name=\"AddMatch\">\n"
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" <arg type=\"s\" direction=\"in\"/>\n"
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" </method>\n"
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" <method name=\"RemoveMatch\">\n"
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" <arg type=\"s\" direction=\"in\"/>\n"
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" </method>\n"
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" <method name=\"GetConnectionCredentials\">\n"
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" <arg type=\"s\" direction=\"in\"/>\n"
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" <arg type=\"a{sv}\" direction=\"out\"/>\n"
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" </method>\n"
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" <method name=\"GetConnectionSELinuxSecurityContext\">\n"
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" <arg type=\"s\" direction=\"in\"/>\n"
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" <arg type=\"ay\" direction=\"out\"/>\n"
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" </method>\n"
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" <method name=\"GetConnectionUnixProcessID\">\n"
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" <arg type=\"s\" direction=\"in\"/>\n"
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" <arg type=\"u\" direction=\"out\"/>\n"
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" </method>\n"
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" <method name=\"GetConnectionUnixUser\">\n"
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" <arg type=\"s\" direction=\"in\"/>\n"
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" <arg type=\"u\" direction=\"out\"/>\n"
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" </method>\n"
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" <method name=\"GetId\">\n"
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" <arg type=\"s\" direction=\"out\"/>\n"
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" </method>\n"
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" <method name=\"GetNameOwner\">\n"
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" <arg type=\"s\" direction=\"in\"/>\n"
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" <arg type=\"s\" direction=\"out\"/>\n"
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" </method>\n"
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" <method name=\"Hello\">\n"
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" <arg type=\"s\" direction=\"out\"/>\n"
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" </method>\n"
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" <method name=\"ListActivatableNames\">\n"
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" <arg type=\"as\" direction=\"out\"/>\n"
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" </method>\n"
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" <method name=\"ListNames\">\n"
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" <arg type=\"as\" direction=\"out\"/>\n"
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" </method>\n"
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" <method name=\"ListQueuedOwners\">\n"
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" <arg type=\"s\" direction=\"in\"/>\n"
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" <arg type=\"as\" direction=\"out\"/>\n"
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" </method>\n"
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" <method name=\"NameHasOwner\">\n"
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" <arg type=\"s\" direction=\"in\"/>\n"
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" <arg type=\"b\" direction=\"out\"/>\n"
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" </method>\n"
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" <method name=\"ReleaseName\">\n"
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" <arg type=\"s\" direction=\"in\"/>\n"
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" <arg type=\"u\" direction=\"out\"/>\n"
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" </method>\n"
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" <method name=\"ReloadConfig\">\n"
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" </method>\n"
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" <method name=\"RequestName\">\n"
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" <arg type=\"s\" direction=\"in\"/>\n"
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" <arg type=\"u\" direction=\"in\"/>\n"
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" <arg type=\"u\" direction=\"out\"/>\n"
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" </method>\n"
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" <method name=\"StartServiceByName\">\n"
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" <arg type=\"s\" direction=\"in\"/>\n"
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" <arg type=\"u\" direction=\"in\"/>\n"
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" <arg type=\"u\" direction=\"out\"/>\n"
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" </method>\n"
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" <method name=\"UpdateActivationEnvironment\">\n"
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" <arg type=\"a{ss}\" direction=\"in\"/>\n"
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" </method>\n"
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" <signal name=\"NameAcquired\">\n"
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" <arg type=\"s\"/>\n"
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" </signal>\n"
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" <signal name=\"NameLost\">\n"
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" <arg type=\"s\"/>\n"
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" </signal>\n"
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" <signal name=\"NameOwnerChanged\">\n"
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" <arg type=\"s\"/>\n"
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" <arg type=\"s\"/>\n"
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" <arg type=\"s\"/>\n"
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" </signal>\n"
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" </interface>\n"
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"</node>\n");
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} else if (sd_bus_message_is_method_call(m, "org.freedesktop.DBus", "AddMatch")) {
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const char *match;
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if (!sd_bus_message_has_signature(m, "s"))
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return synthetic_reply_method_error(m, &SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_INVALID_ARGS, "Invalid parameters"));
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r = sd_bus_message_read(m, "s", &match);
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if (r < 0)
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return synthetic_reply_method_errno(m, r, NULL);
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r = sd_bus_add_match(a, NULL, match, proxy_match, p);
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if (r < 0)
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return synthetic_reply_method_errno(m, r, NULL);
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return synthetic_reply_method_return(m, NULL);
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} else if (sd_bus_message_is_method_call(m, "org.freedesktop.DBus", "RemoveMatch")) {
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const char *match;
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if (!sd_bus_message_has_signature(m, "s"))
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return synthetic_reply_method_error(m, &SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_INVALID_ARGS, "Invalid parameters"));
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r = sd_bus_message_read(m, "s", &match);
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if (r < 0)
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return synthetic_reply_method_errno(m, r, NULL);
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r = bus_remove_match_by_string(a, match, NULL, NULL);
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if (r == 0)
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return synthetic_reply_method_error(m, &SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_MATCH_RULE_NOT_FOUND, "Match rule not found"));
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if (r < 0)
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return synthetic_reply_method_errno(m, r, NULL);
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return synthetic_reply_method_return(m, NULL);
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} else if (sd_bus_message_is_method_call(m, "org.freedesktop.DBus", "GetConnectionCredentials")) {
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_cleanup_bus_creds_unref_ sd_bus_creds *creds = NULL;
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_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
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_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
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if (!sd_bus_message_has_signature(m, "s"))
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return synthetic_reply_method_error(m, &SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_INVALID_ARGS, "Invalid parameters"));
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r = get_creds_by_message(a, m, SD_BUS_CREDS_PID|SD_BUS_CREDS_EUID|SD_BUS_CREDS_SELINUX_CONTEXT, &creds, &error);
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if (r < 0)
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return synthetic_reply_method_errno(m, r, &error);
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r = sd_bus_message_new_method_return(m, &reply);
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if (r < 0)
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return synthetic_reply_method_errno(m, r, NULL);
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r = sd_bus_message_open_container(reply, 'a', "{sv}");
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if (r < 0)
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return synthetic_reply_method_errno(m, r, NULL);
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/* Due to i.e. namespace translations some data might be missing */
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if (creds->mask & SD_BUS_CREDS_PID) {
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r = sd_bus_message_append(reply, "{sv}", "ProcessID", "u", (uint32_t) creds->pid);
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if (r < 0)
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return synthetic_reply_method_errno(m, r, NULL);
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}
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if (creds->mask & SD_BUS_CREDS_EUID) {
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r = sd_bus_message_append(reply, "{sv}", "UnixUserID", "u", (uint32_t) creds->euid);
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if (r < 0)
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return synthetic_reply_method_errno(m, r, NULL);
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}
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if (creds->mask & SD_BUS_CREDS_SELINUX_CONTEXT) {
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r = sd_bus_message_open_container(reply, 'e', "sv");
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if (r < 0)
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return synthetic_reply_method_errno(m, r, NULL);
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r = sd_bus_message_append(reply, "s", "LinuxSecurityLabel");
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if (r < 0)
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return synthetic_reply_method_errno(m, r, NULL);
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r = sd_bus_message_open_container(reply, 'v', "ay");
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if (r < 0)
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return synthetic_reply_method_errno(m, r, NULL);
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r = sd_bus_message_append_array(reply, 'y', creds->label, strlen(creds->label));
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if (r < 0)
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return synthetic_reply_method_errno(m, r, NULL);
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r = sd_bus_message_close_container(reply);
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if (r < 0)
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return synthetic_reply_method_errno(m, r, NULL);
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r = sd_bus_message_close_container(reply);
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if (r < 0)
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return synthetic_reply_method_errno(m, r, NULL);
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}
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r = sd_bus_message_close_container(reply);
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if (r < 0)
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return synthetic_reply_method_errno(m, r, NULL);
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return synthetic_driver_send(m->bus, reply);
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} else if (sd_bus_message_is_method_call(m, "org.freedesktop.DBus", "GetConnectionSELinuxSecurityContext")) {
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_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
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_cleanup_bus_creds_unref_ sd_bus_creds *creds = NULL;
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_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
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if (!sd_bus_message_has_signature(m, "s"))
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return synthetic_reply_method_error(m, &SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_INVALID_ARGS, "Invalid parameters"));
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r = get_creds_by_message(a, m, SD_BUS_CREDS_SELINUX_CONTEXT, &creds, &error);
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if (r < 0)
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return synthetic_reply_method_errno(m, r, &error);
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if (!(creds->mask & SD_BUS_CREDS_SELINUX_CONTEXT))
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return synthetic_reply_method_errno(m, -EOPNOTSUPP, NULL);
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r = sd_bus_message_new_method_return(m, &reply);
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if (r < 0)
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return synthetic_reply_method_errno(m, r, NULL);
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r = sd_bus_message_append_array(reply, 'y', creds->label, strlen(creds->label));
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if (r < 0)
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return synthetic_reply_method_errno(m, r, NULL);
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return synthetic_driver_send(m->bus, reply);
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} else if (sd_bus_message_is_method_call(m, "org.freedesktop.DBus", "GetConnectionUnixProcessID")) {
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_cleanup_bus_creds_unref_ sd_bus_creds *creds = NULL;
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_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
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if (!sd_bus_message_has_signature(m, "s"))
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return synthetic_reply_method_error(m, &SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_INVALID_ARGS, "Invalid parameters"));
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r = get_creds_by_message(a, m, SD_BUS_CREDS_PID, &creds, &error);
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if (r < 0)
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return synthetic_reply_method_errno(m, r, &error);
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if (!(creds->mask & SD_BUS_CREDS_PID))
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return synthetic_reply_method_errno(m, -EOPNOTSUPP, NULL);
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return synthetic_reply_method_return(m, "u", (uint32_t) creds->pid);
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} else if (sd_bus_message_is_method_call(m, "org.freedesktop.DBus", "GetConnectionUnixUser")) {
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_cleanup_bus_creds_unref_ sd_bus_creds *creds = NULL;
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_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
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if (!sd_bus_message_has_signature(m, "s"))
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return synthetic_reply_method_error(m, &SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_INVALID_ARGS, "Invalid parameters"));
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r = get_creds_by_message(a, m, SD_BUS_CREDS_EUID, &creds, &error);
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if (r < 0)
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return synthetic_reply_method_errno(m, r, &error);
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if (!(creds->mask & SD_BUS_CREDS_EUID))
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return synthetic_reply_method_errno(m, -EOPNOTSUPP, NULL);
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return synthetic_reply_method_return(m, "u", (uint32_t) creds->euid);
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} else if (sd_bus_message_is_method_call(m, "org.freedesktop.DBus", "GetId")) {
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sd_id128_t server_id;
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char buf[SD_ID128_STRING_MAX];
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if (!sd_bus_message_has_signature(m, ""))
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return synthetic_reply_method_error(m, &SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_INVALID_ARGS, "Invalid parameters"));
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r = sd_bus_get_bus_id(a, &server_id);
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if (r < 0)
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return synthetic_reply_method_errno(m, r, NULL);
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return synthetic_reply_method_return(m, "s", sd_id128_to_string(server_id, buf));
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} else if (sd_bus_message_is_method_call(m, "org.freedesktop.DBus", "GetNameOwner")) {
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const char *name;
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_cleanup_bus_creds_unref_ sd_bus_creds *creds = NULL;
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_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
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if (!sd_bus_message_has_signature(m, "s"))
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return synthetic_reply_method_error(m, &SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_INVALID_ARGS, "Invalid parameters"));
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r = sd_bus_message_read(m, "s", &name);
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if (r < 0)
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return synthetic_reply_method_errno(m, r, NULL);
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if (streq(name, "org.freedesktop.DBus"))
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return synthetic_reply_method_return(m, "s", "org.freedesktop.DBus");
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r = get_creds_by_name(a, name, SD_BUS_CREDS_UNIQUE_NAME, &creds, &error);
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if (r < 0)
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return synthetic_reply_method_errno(m, r, &error);
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if (!(creds->mask & SD_BUS_CREDS_UNIQUE_NAME))
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return synthetic_reply_method_errno(m, -EOPNOTSUPP, NULL);
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return synthetic_reply_method_return(m, "s", creds->unique_name);
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} else if (sd_bus_message_is_method_call(m, "org.freedesktop.DBus", "ListActivatableNames")) {
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_cleanup_strv_free_ char **names = NULL;
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if (!sd_bus_message_has_signature(m, ""))
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return synthetic_reply_method_error(m, &SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_INVALID_ARGS, "Invalid parameters"));
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r = sd_bus_list_names(a, NULL, &names);
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if (r < 0)
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return synthetic_reply_method_errno(m, r, NULL);
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/* Let's sort the names list to make it stable */
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strv_sort(names);
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return synthetic_reply_method_return_strv(m, names);
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} else if (sd_bus_message_is_method_call(m, "org.freedesktop.DBus", "ListNames")) {
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_cleanup_strv_free_ char **names = NULL;
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if (!sd_bus_message_has_signature(m, ""))
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return synthetic_reply_method_error(m, &SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_INVALID_ARGS, "Invalid parameters"));
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r = sd_bus_list_names(a, &names, NULL);
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if (r < 0)
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return synthetic_reply_method_errno(m, r, NULL);
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r = strv_extend(&names, "org.freedesktop.DBus");
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if (r < 0)
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return synthetic_reply_method_errno(m, r, NULL);
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/* Let's sort the names list to make it stable */
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strv_sort(names);
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return synthetic_reply_method_return_strv(m, names);
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} else if (sd_bus_message_is_method_call(m, "org.freedesktop.DBus", "ListQueuedOwners")) {
|
|
struct kdbus_cmd_list cmd = {
|
|
.flags = KDBUS_LIST_QUEUED,
|
|
.size = sizeof(cmd),
|
|
};
|
|
struct kdbus_info *name_list, *name;
|
|
_cleanup_strv_free_ char **owners = NULL;
|
|
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
|
|
char *arg0;
|
|
int err = 0;
|
|
|
|
if (!sd_bus_message_has_signature(m, "s"))
|
|
return synthetic_reply_method_error(m, &SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_INVALID_ARGS, "Invalid parameters"));
|
|
|
|
r = sd_bus_message_read(m, "s", &arg0);
|
|
if (r < 0)
|
|
return synthetic_reply_method_errno(m, r, NULL);
|
|
|
|
r = sd_bus_get_name_creds(a, arg0, 0, NULL);
|
|
if (r == -ESRCH || r == -ENXIO) {
|
|
sd_bus_error_setf(&error, SD_BUS_ERROR_NAME_HAS_NO_OWNER, "Could not get owners of name '%s': no such name.", arg0);
|
|
return synthetic_reply_method_errno(m, r, &error);
|
|
}
|
|
if (r < 0)
|
|
return synthetic_reply_method_errno(m, r, NULL);
|
|
|
|
r = ioctl(a->input_fd, KDBUS_CMD_LIST, &cmd);
|
|
if (r < 0)
|
|
return synthetic_reply_method_errno(m, -errno, NULL);
|
|
|
|
name_list = (struct kdbus_info *) ((uint8_t *) a->kdbus_buffer + cmd.offset);
|
|
|
|
KDBUS_FOREACH(name, name_list, cmd.list_size) {
|
|
const char *entry_name = NULL;
|
|
struct kdbus_item *item;
|
|
char *n;
|
|
|
|
KDBUS_ITEM_FOREACH(item, name, items)
|
|
if (item->type == KDBUS_ITEM_OWNED_NAME)
|
|
entry_name = item->name.name;
|
|
|
|
if (!streq_ptr(entry_name, arg0))
|
|
continue;
|
|
|
|
if (asprintf(&n, ":1.%llu", (unsigned long long) name->id) < 0) {
|
|
err = -ENOMEM;
|
|
break;
|
|
}
|
|
|
|
r = strv_consume(&owners, n);
|
|
if (r < 0) {
|
|
err = r;
|
|
break;
|
|
}
|
|
}
|
|
|
|
r = bus_kernel_cmd_free(a, cmd.offset);
|
|
if (r < 0)
|
|
return synthetic_reply_method_errno(m, r, NULL);
|
|
|
|
if (err < 0)
|
|
return synthetic_reply_method_errno(m, err, NULL);
|
|
|
|
return synthetic_reply_method_return_strv(m, owners);
|
|
|
|
} else if (sd_bus_message_is_method_call(m, "org.freedesktop.DBus", "NameHasOwner")) {
|
|
const char *name;
|
|
|
|
if (!sd_bus_message_has_signature(m, "s"))
|
|
return synthetic_reply_method_error(m, &SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_INVALID_ARGS, "Invalid parameters"));
|
|
|
|
r = sd_bus_message_read(m, "s", &name);
|
|
if (r < 0)
|
|
return synthetic_reply_method_errno(m, r, NULL);
|
|
|
|
if (streq(name, "org.freedesktop.DBus"))
|
|
return synthetic_reply_method_return(m, "b", true);
|
|
|
|
r = sd_bus_get_name_creds(a, name, 0, NULL);
|
|
if (r < 0 && r != -ESRCH && r != -ENXIO)
|
|
return synthetic_reply_method_errno(m, r, NULL);
|
|
|
|
return synthetic_reply_method_return(m, "b", r >= 0);
|
|
|
|
} else if (sd_bus_message_is_method_call(m, "org.freedesktop.DBus", "ReleaseName")) {
|
|
const char *name;
|
|
|
|
if (!sd_bus_message_has_signature(m, "s"))
|
|
return synthetic_reply_method_error(m, &SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_INVALID_ARGS, "Invalid parameters"));
|
|
|
|
r = sd_bus_message_read(m, "s", &name);
|
|
if (r < 0)
|
|
return synthetic_reply_method_errno(m, r, NULL);
|
|
|
|
r = sd_bus_release_name(a, name);
|
|
if (r < 0) {
|
|
if (r == -ESRCH)
|
|
return synthetic_reply_method_return(m, "u", BUS_NAME_NON_EXISTENT);
|
|
if (r == -EADDRINUSE)
|
|
return synthetic_reply_method_return(m, "u", BUS_NAME_NOT_OWNER);
|
|
|
|
return synthetic_reply_method_errno(m, r, NULL);
|
|
}
|
|
|
|
set_remove(owned_names, (char*) name);
|
|
|
|
return synthetic_reply_method_return(m, "u", BUS_NAME_RELEASED);
|
|
|
|
} else if (sd_bus_message_is_method_call(m, "org.freedesktop.DBus", "ReloadConfig")) {
|
|
if (!sd_bus_message_has_signature(m, ""))
|
|
return synthetic_reply_method_error(m, &SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_INVALID_ARGS, "Invalid parameters"));
|
|
|
|
r = shared_policy_reload(sp);
|
|
if (r < 0)
|
|
return synthetic_reply_method_errno(m, r, NULL);
|
|
|
|
return synthetic_reply_method_return(m, NULL);
|
|
|
|
} else if (sd_bus_message_is_method_call(m, "org.freedesktop.DBus", "RequestName")) {
|
|
const char *name;
|
|
uint32_t flags, param;
|
|
bool in_queue;
|
|
|
|
if (!sd_bus_message_has_signature(m, "su"))
|
|
return synthetic_reply_method_error(m, &SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_INVALID_ARGS, "Invalid parameters"));
|
|
|
|
r = sd_bus_message_read(m, "su", &name, &flags);
|
|
if (r < 0)
|
|
return synthetic_reply_method_errno(m, r, NULL);
|
|
|
|
if (sp) {
|
|
Policy *policy;
|
|
bool denied;
|
|
|
|
policy = shared_policy_acquire(sp);
|
|
denied = !policy_check_own(policy, ucred->uid, ucred->gid, name);
|
|
shared_policy_release(sp, policy);
|
|
if (denied)
|
|
return synthetic_reply_method_errno(m, -EPERM, NULL);
|
|
}
|
|
|
|
if ((flags & ~(BUS_NAME_ALLOW_REPLACEMENT|BUS_NAME_REPLACE_EXISTING|BUS_NAME_DO_NOT_QUEUE)) != 0)
|
|
return synthetic_reply_method_errno(m, -EINVAL, NULL);
|
|
|
|
param = 0;
|
|
if (flags & BUS_NAME_ALLOW_REPLACEMENT)
|
|
param |= SD_BUS_NAME_ALLOW_REPLACEMENT;
|
|
if (flags & BUS_NAME_REPLACE_EXISTING)
|
|
param |= SD_BUS_NAME_REPLACE_EXISTING;
|
|
if (!(flags & BUS_NAME_DO_NOT_QUEUE))
|
|
param |= SD_BUS_NAME_QUEUE;
|
|
|
|
r = set_put_strdup(owned_names, name);
|
|
if (r < 0)
|
|
return synthetic_reply_method_errno(m, r, NULL);
|
|
|
|
r = sd_bus_request_name(a, name, param);
|
|
if (r < 0) {
|
|
if (r == -EALREADY)
|
|
return synthetic_reply_method_return(m, "u", BUS_NAME_ALREADY_OWNER);
|
|
|
|
set_remove(owned_names, (char*) name);
|
|
|
|
if (r == -EEXIST)
|
|
return synthetic_reply_method_return(m, "u", BUS_NAME_EXISTS);
|
|
return synthetic_reply_method_errno(m, r, NULL);
|
|
}
|
|
|
|
in_queue = (r == 0);
|
|
|
|
if (in_queue)
|
|
return synthetic_reply_method_return(m, "u", BUS_NAME_IN_QUEUE);
|
|
|
|
return synthetic_reply_method_return(m, "u", BUS_NAME_PRIMARY_OWNER);
|
|
|
|
} else if (sd_bus_message_is_method_call(m, "org.freedesktop.DBus", "StartServiceByName")) {
|
|
_cleanup_bus_message_unref_ sd_bus_message *msg = NULL;
|
|
const char *name;
|
|
uint32_t flags;
|
|
|
|
if (!sd_bus_message_has_signature(m, "su"))
|
|
return synthetic_reply_method_error(m, &SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_INVALID_ARGS, "Invalid parameters"));
|
|
|
|
r = sd_bus_message_read(m, "su", &name, &flags);
|
|
if (r < 0)
|
|
return synthetic_reply_method_errno(m, r, NULL);
|
|
|
|
if (flags != 0)
|
|
return synthetic_reply_method_errno(m, -EINVAL, NULL);
|
|
|
|
r = sd_bus_get_name_creds(a, name, 0, NULL);
|
|
if (r >= 0 || streq(name, "org.freedesktop.DBus"))
|
|
return synthetic_reply_method_return(m, "u", BUS_START_REPLY_ALREADY_RUNNING);
|
|
if (r != -ESRCH)
|
|
return synthetic_reply_method_errno(m, r, NULL);
|
|
|
|
r = sd_bus_message_new_method_call(
|
|
a,
|
|
&msg,
|
|
name,
|
|
"/",
|
|
"org.freedesktop.DBus.Peer",
|
|
"Ping");
|
|
if (r < 0)
|
|
return synthetic_reply_method_errno(m, r, NULL);
|
|
|
|
r = sd_bus_send(a, msg, NULL);
|
|
if (r < 0)
|
|
return synthetic_reply_method_errno(m, r, NULL);
|
|
|
|
return synthetic_reply_method_return(m, "u", BUS_START_REPLY_SUCCESS);
|
|
|
|
} else if (sd_bus_message_is_method_call(m, "org.freedesktop.DBus", "UpdateActivationEnvironment")) {
|
|
_cleanup_bus_message_unref_ sd_bus_message *msg = NULL;
|
|
_cleanup_strv_free_ char **args = NULL;
|
|
|
|
if (!sd_bus_message_has_signature(m, "a{ss}"))
|
|
return synthetic_reply_method_error(m, &SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_INVALID_ARGS, "Invalid parameters"));
|
|
|
|
r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "{ss}");
|
|
if (r < 0)
|
|
return synthetic_reply_method_errno(m, r, NULL);
|
|
|
|
while ((r = sd_bus_message_enter_container(m, SD_BUS_TYPE_DICT_ENTRY, "ss")) > 0) {
|
|
_cleanup_free_ char *s = NULL;
|
|
const char *key;
|
|
const char *value;
|
|
|
|
r = sd_bus_message_read(m, "ss", &key, &value);
|
|
if (r < 0)
|
|
return synthetic_reply_method_errno(m, r, NULL);
|
|
|
|
s = strjoin(key, "=", value, NULL);
|
|
if (!s)
|
|
return synthetic_reply_method_errno(m, -ENOMEM, NULL);
|
|
|
|
r = strv_extend(&args, s);
|
|
if (r < 0)
|
|
return synthetic_reply_method_errno(m, r, NULL);
|
|
|
|
r = sd_bus_message_exit_container(m);
|
|
if (r < 0)
|
|
return synthetic_reply_method_errno(m, r, NULL);
|
|
}
|
|
|
|
r = sd_bus_message_exit_container(m);
|
|
if (r < 0)
|
|
return synthetic_reply_method_errno(m, r, NULL);
|
|
|
|
if (!args)
|
|
return synthetic_reply_method_errno(m, -EINVAL, NULL);
|
|
|
|
r = sd_bus_message_new_method_call(
|
|
a,
|
|
&msg,
|
|
"org.freedesktop.systemd1",
|
|
"/org/freedesktop/systemd1",
|
|
"org.freedesktop.systemd1.Manager",
|
|
"SetEnvironment");
|
|
if (r < 0)
|
|
return synthetic_reply_method_errno(m, r, NULL);
|
|
|
|
r = sd_bus_message_append_strv(msg, args);
|
|
if (r < 0)
|
|
return synthetic_reply_method_errno(m, r, NULL);
|
|
|
|
r = sd_bus_call(a, msg, 0, NULL, NULL);
|
|
if (r < 0)
|
|
return synthetic_reply_method_errno(m, r, NULL);
|
|
|
|
return synthetic_reply_method_return(m, NULL);
|
|
|
|
} else {
|
|
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
|
|
|
|
r = sd_bus_error_setf(&error, SD_BUS_ERROR_UNKNOWN_METHOD, "Unknown method '%s'.", m->member);
|
|
|
|
return synthetic_reply_method_errno(m, r, &error);
|
|
}
|
|
}
|