+++ /dev/null
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-/***
- This file is part of systemd.
-
- Copyright 2010 Lennart Poettering
- Copyright 2013 Daniel Mack
- Copyright 2014 Kay Sievers
-
- 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 <unistd.h>
-#include <string.h>
-#include <errno.h>
-#include <stddef.h>
-#include <getopt.h>
-
-#include "log.h"
-#include "util.h"
-#include "sd-daemon.h"
-#include "sd-bus.h"
-#include "bus-internal.h"
-#include "bus-util.h"
-#include "build.h"
-#include "strv.h"
-#include "def.h"
-#include "proxy.h"
-
-static char *arg_address = NULL;
-static char *arg_command_line_buffer = NULL;
-
-static int help(void) {
-
- printf("%s [OPTIONS...]\n\n"
- "Connect STDIO to a given bus address.\n\n"
- " -h --help Show this help\n"
- " --version Show package version\n"
- " --machine=MACHINE Connect to specified machine\n"
- " --address=ADDRESS Connect to the bus specified by ADDRESS\n"
- " (default: " DEFAULT_SYSTEM_BUS_ADDRESS ")\n",
- program_invocation_short_name);
-
- return 0;
-}
-
-static int parse_argv(int argc, char *argv[]) {
-
- enum {
- ARG_VERSION = 0x100,
- ARG_ADDRESS,
- ARG_MACHINE,
- };
-
- static const struct option options[] = {
- { "help", no_argument, NULL, 'h' },
- { "version", no_argument, NULL, ARG_VERSION },
- { "address", required_argument, NULL, ARG_ADDRESS },
- { "machine", required_argument, NULL, ARG_MACHINE },
- {},
- };
-
- int c;
-
- assert(argc >= 0);
- assert(argv);
-
- while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0)
-
- switch (c) {
-
- case 'h':
- help();
- return 0;
-
- case ARG_VERSION:
- puts(PACKAGE_STRING);
- puts(SYSTEMD_FEATURES);
- return 0;
-
- case ARG_ADDRESS: {
- char *a;
-
- a = strdup(optarg);
- if (!a)
- return log_oom();
-
- free(arg_address);
- arg_address = a;
- break;
- }
-
- case ARG_MACHINE: {
- _cleanup_free_ char *e = NULL;
- char *a;
-
- e = bus_address_escape(optarg);
- if (!e)
- return log_oom();
-
-#ifdef ENABLE_KDBUS
- a = strjoin("x-machine-kernel:machine=", e, ";x-machine-unix:machine=", e, NULL);
-#else
- a = strjoin("x-machine-unix:machine=", e, NULL);
-#endif
- if (!a)
- return log_oom();
-
- free(arg_address);
- arg_address = a;
-
- break;
- }
-
- case '?':
- return -EINVAL;
-
- default:
- assert_not_reached("Unhandled option");
- }
-
- /* If the first command line argument is only "x" characters
- * we'll write who we are talking to into it, so that "ps" is
- * explanatory */
- arg_command_line_buffer = argv[optind];
- if (argc > optind + 1 || (arg_command_line_buffer && !in_charset(arg_command_line_buffer, "x"))) {
- log_error("Too many arguments");
- return -EINVAL;
- }
-
- if (!arg_address) {
- arg_address = strdup(DEFAULT_SYSTEM_BUS_ADDRESS);
- if (!arg_address)
- return log_oom();
- }
-
- return 1;
-}
-
-static int rename_service(sd_bus *a, sd_bus *b) {
- _cleanup_bus_creds_unref_ sd_bus_creds *creds = NULL;
- _cleanup_free_ char *p = NULL, *name = NULL;
- const char *comm;
- char **cmdline;
- uid_t uid;
- pid_t pid;
- int r;
-
- assert(a);
- assert(b);
-
- r = sd_bus_get_owner_creds(b, SD_BUS_CREDS_EUID|SD_BUS_CREDS_PID|SD_BUS_CREDS_CMDLINE|SD_BUS_CREDS_COMM|SD_BUS_CREDS_AUGMENT, &creds);
- if (r < 0)
- return r;
-
- r = sd_bus_creds_get_euid(creds, &uid);
- if (r < 0)
- return r;
-
- r = sd_bus_creds_get_pid(creds, &pid);
- if (r < 0)
- return r;
-
- r = sd_bus_creds_get_cmdline(creds, &cmdline);
- if (r < 0)
- return r;
-
- r = sd_bus_creds_get_comm(creds, &comm);
- if (r < 0)
- return r;
-
- name = uid_to_name(uid);
- if (!name)
- return -ENOMEM;
-
- p = strv_join(cmdline, " ");
- if (!p)
- return -ENOMEM;
-
- /* The status string gets the full command line ... */
- sd_notifyf(false,
- "STATUS=Processing requests from client PID "PID_FMT" (%s); UID "UID_FMT" (%s)",
- pid, p,
- uid, name);
-
- /* ... and the argv line only the short comm */
- if (arg_command_line_buffer) {
- size_t m, w;
-
- m = strlen(arg_command_line_buffer);
- w = snprintf(arg_command_line_buffer, m,
- "[PID "PID_FMT"/%s; UID "UID_FMT"/%s]",
- pid, comm,
- uid, name);
-
- if (m > w)
- memzero(arg_command_line_buffer + w, m - w);
- }
-
- log_debug("Running on behalf of PID "PID_FMT" (%s), UID "UID_FMT" (%s), %s",
- pid, p,
- uid, name,
- a->unique_name);
-
- return 0;
-}
-
-int main(int argc, char *argv[]) {
- _cleanup_(proxy_freep) Proxy *p = NULL;
- int r;
-
- log_set_target(LOG_TARGET_JOURNAL_OR_KMSG);
- log_parse_environment();
- log_open();
-
- r = parse_argv(argc, argv);
- if (r <= 0)
- goto finish;
-
- r = proxy_new(&p, STDIN_FILENO, STDOUT_FILENO, arg_address);
- if (r < 0)
- goto finish;
-
- r = rename_service(p->destination_bus, p->local_bus);
- if (r < 0)
- log_debug_errno(r, "Failed to rename process: %m");
-
- r = proxy_run(p);
-
-finish:
- sd_notify(false,
- "STOPPING=1\n"
- "STATUS=Shutting down.");
-
- free(arg_address);
-
- return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
-}
~ianmdlvl / elogind.git / blobdiff