fb79a2e2cf
function old new delta do_iptunnel 203 977 +774 process_dev 5328 5494 +166 ioctl_or_perror - 54 +54 ioctl_or_perror_and_die - 51 +51 ioctl_alt_func - 49 +49 bb_ioctl_or_warn - 47 +47 do_add_ioctl 102 145 +43 bb_xioctl - 39 +39 print_value_on_off - 31 +31 get_lcm 105 123 +18 arp_main 2155 2167 +12 .................. zcip_main 1576 1566 -10 setlogcons_main 92 82 -10 dumpkmap_main 263 253 -10 do_get_ioctl 85 75 -10 setkeycodes_main 165 154 -11 write_table 244 232 -12 vconfig_main 318 306 -12 do_del_ioctl 93 81 -12 set_address 75 62 -13 maybe_set_utc 30 16 -14 loadfont_main 495 479 -16 slattach_main 712 695 -17 do_loadfont 191 174 -17 do_iplink 1155 1136 -19 getty_main 2583 2562 -21 fbset_main 2058 2035 -23 do_time 588 565 -23 xioctl 25 - -25 read_rtc 186 160 -26 parse_conf 1299 1270 -29 udhcp_read_interface 269 239 -30 bb_ioctl 45 - -45 bb_ioctl_alt 70 - -70 bb_ioctl_on_off 78 - -78 .rodata 129370 129018 -352 do_show 799 - -799 ------------------------------------------------------------------------------ (add/remove: 6/5 grow/shrink: 13/49 up/down: 1316/-1864) Total: -548 bytes text data bss dec hex filename 675352 2740 13968 692060 a8f5c busybox_old 674804 2740 13968 691512 a8d38 busybox_unstripped
118 lines
2.6 KiB
C
118 lines
2.6 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* vlock implementation for busybox
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*
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* Copyright (C) 2000 by spoon <spoon@ix.netcom.com>
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* Written by spoon <spon@ix.netcom.com>
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*
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* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
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*/
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/* Shoutz to Michael K. Johnson <johnsonm@redhat.com>, author of the
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* original vlock. I snagged a bunch of his code to write this
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* minimalistic vlock.
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*/
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/* Fixed by Erik Andersen to do passwords the tinylogin way...
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* It now works with md5, sha1, etc passwords. */
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#include "libbb.h"
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#include <sys/vt.h>
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static struct passwd *pw;
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static struct vt_mode ovtm;
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static struct termios oterm;
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static int vfd;
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static unsigned long o_lock_all;
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static void release_vt(int signo)
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{
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ioctl(vfd, VT_RELDISP, !o_lock_all);
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}
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static void acquire_vt(int signo)
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{
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ioctl(vfd, VT_RELDISP, VT_ACKACQ);
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}
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static void restore_terminal(void)
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{
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ioctl(vfd, VT_SETMODE, &ovtm);
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tcsetattr(STDIN_FILENO, TCSANOW, &oterm);
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}
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int vlock_main(int argc, char **argv);
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int vlock_main(int argc, char **argv)
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{
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sigset_t sig;
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struct sigaction sa;
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struct vt_mode vtm;
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struct termios term;
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uid_t uid = getuid();
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pw = getpwuid(uid);
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if (pw == NULL)
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bb_error_msg_and_die("unknown uid %d", uid);
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if (argc > 2) {
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bb_show_usage();
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}
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o_lock_all = getopt32(argc, argv, "a");
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vfd = xopen(CURRENT_TTY, O_RDWR);
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xioctl(vfd, VT_GETMODE, &vtm);
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/* mask a bunch of signals */
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sigprocmask(SIG_SETMASK, NULL, &sig);
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sigdelset(&sig, SIGUSR1);
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sigdelset(&sig, SIGUSR2);
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sigaddset(&sig, SIGTSTP);
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sigaddset(&sig, SIGTTIN);
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sigaddset(&sig, SIGTTOU);
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sigaddset(&sig, SIGHUP);
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sigaddset(&sig, SIGCHLD);
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sigaddset(&sig, SIGQUIT);
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sigaddset(&sig, SIGINT);
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sigemptyset(&(sa.sa_mask));
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sa.sa_flags = SA_RESTART;
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sa.sa_handler = release_vt;
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sigaction(SIGUSR1, &sa, NULL);
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sa.sa_handler = acquire_vt;
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sigaction(SIGUSR2, &sa, NULL);
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/* need to handle some signals so that we don't get killed by them */
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sa.sa_handler = SIG_IGN;
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sigaction(SIGHUP, &sa, NULL);
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sigaction(SIGQUIT, &sa, NULL);
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sigaction(SIGINT, &sa, NULL);
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sigaction(SIGTSTP, &sa, NULL);
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ovtm = vtm;
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vtm.mode = VT_PROCESS;
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vtm.relsig = SIGUSR1;
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vtm.acqsig = SIGUSR2;
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ioctl(vfd, VT_SETMODE, &vtm);
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tcgetattr(STDIN_FILENO, &oterm);
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term = oterm;
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term.c_iflag &= ~BRKINT;
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term.c_iflag |= IGNBRK;
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term.c_lflag &= ~ISIG;
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term.c_lflag &= ~(ECHO | ECHOCTL);
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tcsetattr(STDIN_FILENO, TCSANOW, &term);
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do {
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printf("Virtual Console%s locked by %s.\n", (o_lock_all) ? "s" : "", pw->pw_name);
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if (correct_password(pw)) {
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break;
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}
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bb_do_delay(FAIL_DELAY);
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puts("Password incorrect");
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} while (1);
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restore_terminal();
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fflush_stdout_and_exit(0);
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}
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