+++ /dev/null
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-/***
- This file is part of systemd.
-
- Copyright 2011 Lennart Poettering
-
- systemd is free software; you can redistribute it and/or modify it
- under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation; either version 2.1 of the License, or
- (at your option) any later version.
-
- systemd is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with systemd; If not, see <http://www.gnu.org/licenses/>.
-***/
-
-#include <sys/types.h>
-
-#include <errno.h>
-
-#include "util.h"
-#include "dbus-common.h"
-#include "polkit.h"
-
-/* This mimics dbus_bus_get_unix_user() */
-static pid_t get_unix_process_id(
- DBusConnection *connection,
- const char *name,
- DBusError *error) {
-
- DBusMessage *m = NULL, *reply = NULL;
- uint32_t pid = 0;
-
- m = dbus_message_new_method_call(
- DBUS_SERVICE_DBUS,
- DBUS_PATH_DBUS,
- DBUS_INTERFACE_DBUS,
- "GetConnectionUnixProcessID");
- if (!m) {
- dbus_set_error_const(error, DBUS_ERROR_NO_MEMORY, NULL);
- goto finish;
- }
-
- if (!dbus_message_append_args(
- m,
- DBUS_TYPE_STRING, &name,
- DBUS_TYPE_INVALID)) {
- dbus_set_error_const(error, DBUS_ERROR_NO_MEMORY, NULL);
- goto finish;
- }
-
- reply = dbus_connection_send_with_reply_and_block(connection, m, -1, error);
- if (!reply)
- goto finish;
-
- if (dbus_set_error_from_message(error, reply))
- goto finish;
-
- if (!dbus_message_get_args(
- reply, error,
- DBUS_TYPE_UINT32, &pid,
- DBUS_TYPE_INVALID))
- goto finish;
-
-finish:
- if (m)
- dbus_message_unref(m);
-
- if (reply)
- dbus_message_unref(reply);
-
- return (pid_t) pid;
-}
-
-int verify_polkit(
- DBusConnection *c,
- DBusMessage *request,
- const char *action,
- bool interactive,
- bool *_challenge,
- DBusError *error) {
-
- DBusMessage *m = NULL, *reply = NULL;
- const char *unix_process = "unix-process", *pid = "pid", *starttime = "start-time", *cancel_id = "";
- const char *sender;
- uint32_t flags = interactive ? 1 : 0;
- pid_t pid_raw;
- uint32_t pid_u32;
- unsigned long long starttime_raw;
- uint64_t starttime_u64;
- DBusMessageIter iter_msg, iter_struct, iter_array, iter_dict, iter_variant;
- int r;
- dbus_bool_t authorized = FALSE, challenge = FALSE;
-
- assert(c);
- assert(request);
-
- sender = dbus_message_get_sender(request);
- if (!sender)
- return -EINVAL;
-
- pid_raw = get_unix_process_id(c, sender, error);
- if (pid_raw == 0)
- return -EINVAL;
-
- r = get_starttime_of_pid(pid_raw, &starttime_raw);
- if (r < 0)
- return r;
-
- m = dbus_message_new_method_call(
- "org.freedesktop.PolicyKit1",
- "/org/freedesktop/PolicyKit1/Authority",
- "org.freedesktop.PolicyKit1.Authority",
- "CheckAuthorization");
- if (!m)
- return -ENOMEM;
-
- dbus_message_iter_init_append(m, &iter_msg);
-
- pid_u32 = (uint32_t) pid_raw;
- starttime_u64 = (uint64_t) starttime_raw;
-
- if (!dbus_message_iter_open_container(&iter_msg, DBUS_TYPE_STRUCT, NULL, &iter_struct) ||
- !dbus_message_iter_append_basic(&iter_struct, DBUS_TYPE_STRING, &unix_process) ||
- !dbus_message_iter_open_container(&iter_struct, DBUS_TYPE_ARRAY, "{sv}", &iter_array) ||
- !dbus_message_iter_open_container(&iter_array, DBUS_TYPE_DICT_ENTRY, NULL, &iter_dict) ||
- !dbus_message_iter_append_basic(&iter_dict, DBUS_TYPE_STRING, &pid) ||
- !dbus_message_iter_open_container(&iter_dict, DBUS_TYPE_VARIANT, "u", &iter_variant) ||
- !dbus_message_iter_append_basic(&iter_variant, DBUS_TYPE_UINT32, &pid_u32) ||
- !dbus_message_iter_close_container(&iter_dict, &iter_variant) ||
- !dbus_message_iter_close_container(&iter_array, &iter_dict) ||
- !dbus_message_iter_open_container(&iter_array, DBUS_TYPE_DICT_ENTRY, NULL, &iter_dict) ||
- !dbus_message_iter_append_basic(&iter_dict, DBUS_TYPE_STRING, &starttime) ||
- !dbus_message_iter_open_container(&iter_dict, DBUS_TYPE_VARIANT, "t", &iter_variant) ||
- !dbus_message_iter_append_basic(&iter_variant, DBUS_TYPE_UINT64, &starttime_u64) ||
- !dbus_message_iter_close_container(&iter_dict, &iter_variant) ||
- !dbus_message_iter_close_container(&iter_array, &iter_dict) ||
- !dbus_message_iter_close_container(&iter_struct, &iter_array) ||
- !dbus_message_iter_close_container(&iter_msg, &iter_struct) ||
- !dbus_message_iter_append_basic(&iter_msg, DBUS_TYPE_STRING, &action) ||
- !dbus_message_iter_open_container(&iter_msg, DBUS_TYPE_ARRAY, "{ss}", &iter_array) ||
- !dbus_message_iter_close_container(&iter_msg, &iter_array) ||
- !dbus_message_iter_append_basic(&iter_msg, DBUS_TYPE_UINT32, &flags) ||
- !dbus_message_iter_append_basic(&iter_msg, DBUS_TYPE_STRING, &cancel_id)) {
- r = -ENOMEM;
- goto finish;
- }
-
- reply = dbus_connection_send_with_reply_and_block(c, m, -1, error);
- if (!reply) {
- r = -EIO;
- goto finish;
- }
-
- if (dbus_set_error_from_message(error, reply)) {
- r = -EIO;
- goto finish;
- }
-
- if (!dbus_message_iter_init(reply, &iter_msg) ||
- dbus_message_iter_get_arg_type(&iter_msg) != DBUS_TYPE_STRUCT) {
- r = -EIO;
- goto finish;
- }
-
- dbus_message_iter_recurse(&iter_msg, &iter_struct);
-
- if (dbus_message_iter_get_arg_type(&iter_struct) != DBUS_TYPE_BOOLEAN) {
- r = -EIO;
- goto finish;
- }
-
- dbus_message_iter_get_basic(&iter_struct, &authorized);
-
- if (!dbus_message_iter_next(&iter_struct) ||
- dbus_message_iter_get_arg_type(&iter_struct) != DBUS_TYPE_BOOLEAN) {
- r = -EIO;
- goto finish;
- }
-
- dbus_message_iter_get_basic(&iter_struct, &challenge);
-
- if (authorized)
- r = 1;
- else if (_challenge) {
- *_challenge = !!challenge;
- r = 0;
- } else
- r = -EPERM;
-
-finish:
-
- if (m)
- dbus_message_unref(m);
-
- if (reply)
- dbus_message_unref(reply);
-
- return r;
-}
~ianmdlvl / elogind.git / blobdiff