1
1
/* -*- coding: utf-8 -*- */
3
* Passprompt - Read a password from usplash and output it
3
* Usplash - Read a password from usplash and output it
5
5
* Copyright © 2008,2009 Teddy Hogeborn
6
6
* Copyright © 2008,2009 Björn Påhlsson
37
37
#include <stddef.h> /* NULL */
38
38
#include <string.h> /* strlen(), memcmp() */
39
#include <stdio.h> /* asprintf(), perror() */
39
#include <stdio.h> /* asprintf(), perror(), sscanf() */
40
40
#include <unistd.h> /* close(), write(), readlink(),
41
41
read(), STDOUT_FILENO, sleep(),
42
42
fork(), setuid(), geteuid(),
43
43
setsid(), chdir(), dup2(),
44
44
STDERR_FILENO, execv() */
45
#include <stdlib.h> /* free(), EXIT_FAILURE, strtoul(),
46
realloc(), EXIT_SUCCESS, malloc(),
45
#include <stdlib.h> /* free(), EXIT_FAILURE, realloc(),
46
EXIT_SUCCESS, malloc(), _exit() */
48
47
#include <stdlib.h> /* getenv() */
49
48
#include <dirent.h> /* opendir(), readdir(), closedir() */
49
#include <inttypes.h> /* intmax_t, SCNdMAX */
50
50
#include <sys/stat.h> /* struct stat, lstat(), S_ISLNK */
52
52
sig_atomic_t interrupted_by_signal = 0;
94
94
size_t written = 0;
95
96
while(not interrupted_by_signal and written < cmd_line_len){
96
ret = write(fifo_fd, cmd_line + written,
97
cmd_line_len - written);
97
sret = write(fifo_fd, cmd_line + written,
98
cmd_line_len - written);
99
100
if(errno != EINTR or interrupted_by_signal){
169
170
for(struct dirent *proc_ent = readdir(proc_dir);
170
171
proc_ent != NULL;
171
172
proc_ent = readdir(proc_dir)){
172
pid_t pid = (pid_t) strtoul(proc_ent->d_name, NULL, 10);
177
ret = sscanf(proc_ent->d_name, "%" SCNdMAX "%n", &tmpmax,
179
if(ret < 1 or tmpmax != (pid_t)tmpmax
180
or proc_ent->d_name[numchars] != '\0'){
177
186
/* Find the executable name by doing readlink() on the
178
187
/proc/<pid>/exe link */
208
221
sret = readlink(exe_link, exe_target, sizeof(exe_target));
214
224
if((sret == ((ssize_t)sizeof(exe_target)-1))
215
225
and (memcmp(usplash_name, exe_target,