1
/* -*- coding: utf-8 -*- */
3
* Passprompt - Read a password from usplash and output it
5
* Copyright © 2008,2009 Teddy Hogeborn
6
* Copyright © 2008,2009 Björn Påhlsson
8
* This program is free software: you can redistribute it and/or
9
* modify it under the terms of the GNU General Public License as
10
* published by the Free Software Foundation, either version 3 of the
11
* License, or (at your option) any later version.
13
* This program 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
* General Public License for more details.
18
* You should have received a copy of the GNU General Public License
19
* along with this program. If not, see
20
* <http://www.gnu.org/licenses/>.
22
* Contact the authors at <https://www.fukt.bsnet.se/~belorn/> and
23
* <https://www.fukt.bsnet.se/~teddy/>.
1
26
#define _GNU_SOURCE /* asprintf() */
2
27
#include <signal.h> /* sig_atomic_t, struct sigaction,
3
28
sigemptyset(), sigaddset(), SIGINT,
5
30
SIG_IGN, kill(), SIGKILL */
6
31
#include <stdbool.h> /* bool, false, true */
7
32
#include <fcntl.h> /* open(), O_WRONLY, O_RDONLY */
33
#include <iso646.h> /* and, or, not*/
8
34
#include <errno.h> /* errno, EINTR */
9
#include <sys/types.h> /* size_t, ssize_t, pid_t, DIR,
35
#include <sys/types.h> /* size_t, ssize_t, pid_t, DIR, struct
11
37
#include <stddef.h> /* NULL */
12
38
#include <string.h> /* strlen(), memcmp() */
13
39
#include <stdio.h> /* asprintf(), perror() */
22
48
#include <stdlib.h> /* getenv() */
23
49
#include <dirent.h> /* opendir(), readdir(), closedir() */
27
#include <iso646.h> /* and */
28
#include <sys/wait.h> /* waitpid(), WIFEXITED(),
50
#include <sys/stat.h> /* struct stat, lstat(), S_ISLNK */
31
52
sig_atomic_t interrupted_by_signal = 0;
37
58
static bool usplash_write(const char *cmd, const char *arg){
39
* usplash_write("TIMEOUT", "15"); -> "TIMEOUT 15\0"
40
* usplash_write("PULSATE", NULL); -> "PULSATE\0"
60
* usplash_write("TIMEOUT", "15") will write "TIMEOUT 15\0"
61
* usplash_write("PULSATE", NULL) will write "PULSATE\0"
165
187
closedir(proc_dir);
166
188
return EXIT_FAILURE;
191
/* Check that it refers to a symlink owned by root:root */
192
struct stat exe_stat;
193
ret = lstat(exe_link, &exe_stat);
201
if(not S_ISLNK(exe_stat.st_mode)
202
or exe_stat.st_uid != 0
203
or exe_stat.st_gid != 0){
168
208
sret = readlink(exe_link, exe_target, sizeof(exe_target));
407
447
return EXIT_SUCCESS;
450
} /* end of non-loop while() */
412
452
/* If we got here, an error or interrupt must have happened */
454
/* Create argc and argv for new usplash*/
414
455
int cmdline_argc = 0;
415
456
char **cmdline_argv = malloc(sizeof(char *));
416
/* Create argv and argc for new usplash*/
418
458
size_t position = 0;
419
459
while(position < cmdline_len){
433
473
cmdline_argv[cmdline_argc] = NULL;
435
475
/* Kill old usplash */
436
kill(usplash_pid, SIGTERM);
476
kill(usplash_pid, SIGTERM);
438
478
while(kill(usplash_pid, 0) == 0){
439
479
kill(usplash_pid, SIGKILL);
added
removed
plugins.d/usplash.c
