mirror of https://github.com/i3/i3lock.git
Add option to lock TTY switching
parent
d9bcb58cc6
commit
dcfcba3ed4
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@ -56,3 +56,7 @@ EXTRA_DIST = \
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LICENSE \
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LICENSE \
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README.md \
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README.md \
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I3LOCK_VERSION
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I3LOCK_VERSION
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# SUID the executable so it has permissions to lock TTY switching
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install-exec-hook:
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chmod +s $(DESTDIR)$(bindir)/i3lock$(EXEEXT)
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5
i3lock.1
5
i3lock.1
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@ -28,6 +28,7 @@ i3lock \- improved screen locker
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.RB [\|\-u\|]
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.RB [\|\-u\|]
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.RB [\|\-e\|]
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.RB [\|\-e\|]
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.RB [\|\-f\|]
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.RB [\|\-f\|]
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.RB [\|\-l\|]
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.SH DESCRIPTION
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.SH DESCRIPTION
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.B i3lock
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.B i3lock
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@ -105,6 +106,10 @@ your computer with the enter key.
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.B \-f, \-\-show-failed-attempts
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.B \-f, \-\-show-failed-attempts
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Show the number of failed attempts, if any.
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Show the number of failed attempts, if any.
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.TP
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.B \-l, \-\-lock-console
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Lock the console to disable TTY switching (Linux only).
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.TP
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.TP
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.B \-\-debug
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.B \-\-debug
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Enables debug logging.
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Enables debug logging.
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49
i3lock.c
49
i3lock.c
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@ -40,6 +40,11 @@
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#endif
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#endif
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#include <xcb/xcb_aux.h>
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#include <xcb/xcb_aux.h>
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#include <xcb/randr.h>
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#include <xcb/randr.h>
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#if defined(__linux__)
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#include <fcntl.h>
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#include <linux/vt.h>
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#include <sys/ioctl.h>
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#endif
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#include "i3lock.h"
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#include "i3lock.h"
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#include "xcb.h"
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#include "xcb.h"
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@ -866,6 +871,11 @@ int main(int argc, char *argv[]) {
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int ret;
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int ret;
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struct pam_conv conv = {conv_callback, NULL};
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struct pam_conv conv = {conv_callback, NULL};
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#endif
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#endif
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#if defined(__linux__)
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bool lock_tty_switching = false;
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int term = -1;
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#endif
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int curs_choice = CURS_NONE;
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int curs_choice = CURS_NONE;
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int o;
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int o;
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int longoptind = 0;
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int longoptind = 0;
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@ -884,6 +894,7 @@ int main(int argc, char *argv[]) {
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{"ignore-empty-password", no_argument, NULL, 'e'},
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{"ignore-empty-password", no_argument, NULL, 'e'},
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{"inactivity-timeout", required_argument, NULL, 'I'},
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{"inactivity-timeout", required_argument, NULL, 'I'},
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{"show-failed-attempts", no_argument, NULL, 'f'},
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{"show-failed-attempts", no_argument, NULL, 'f'},
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{"lock-console", no_argument, NULL, 'l'},
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{NULL, no_argument, NULL, 0}};
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{NULL, no_argument, NULL, 0}};
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if ((pw = getpwuid(getuid())) == NULL)
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if ((pw = getpwuid(getuid())) == NULL)
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@ -891,7 +902,7 @@ int main(int argc, char *argv[]) {
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if ((username = pw->pw_name) == NULL)
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if ((username = pw->pw_name) == NULL)
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errx(EXIT_FAILURE, "pw->pw_name is NULL.\n");
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errx(EXIT_FAILURE, "pw->pw_name is NULL.\n");
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char *optstring = "hvnbdc:p:ui:teI:f";
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char *optstring = "hvnbdc:p:ui:teI:fl";
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while ((o = getopt_long(argc, argv, optstring, longopts, &longoptind)) != -1) {
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while ((o = getopt_long(argc, argv, optstring, longopts, &longoptind)) != -1) {
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switch (o) {
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switch (o) {
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case 'v':
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case 'v':
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@ -949,9 +960,16 @@ int main(int argc, char *argv[]) {
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case 'f':
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case 'f':
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show_failed_attempts = true;
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show_failed_attempts = true;
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break;
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break;
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case 'l':
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#if defined(__linux__)
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lock_tty_switching = true;
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#else
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errx(EXIT_FAILURE, "TTY switch locking is only supported on Linux.");
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#endif
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break;
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default:
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default:
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errx(EXIT_FAILURE, "Syntax: i3lock [-v] [-n] [-b] [-d] [-c color] [-u] [-p win|default]"
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errx(EXIT_FAILURE, "Syntax: i3lock [-v] [-n] [-b] [-d] [-c color] [-u] [-p win|default]"
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" [-i image.png] [-t] [-e] [-I timeout] [-f]");
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" [-i image.png] [-t] [-e] [-I timeout] [-f] [-l]");
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}
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}
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}
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}
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@ -1117,6 +1135,21 @@ int main(int argc, char *argv[]) {
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if (main_loop == NULL)
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if (main_loop == NULL)
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errx(EXIT_FAILURE, "Could not initialize libev. Bad LIBEV_FLAGS?\n");
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errx(EXIT_FAILURE, "Could not initialize libev. Bad LIBEV_FLAGS?\n");
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#if defined(__linux__)
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/* Lock tty switching */
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if (lock_tty_switching) {
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if ((term = open("/dev/console", O_RDWR)) == -1) {
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perror("error locking TTY switching: opening console failed");
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}
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if (term != -1 && (ioctl(term, VT_LOCKSWITCH)) == -1) {
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perror("error locking TTY switching: locking console failed");
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}
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}
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#endif
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/* Explicitly call the screen redraw in case "locking…" message was displayed */
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/* Explicitly call the screen redraw in case "locking…" message was displayed */
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auth_state = STATE_AUTH_IDLE;
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auth_state = STATE_AUTH_IDLE;
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redraw_screen();
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redraw_screen();
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@ -1144,6 +1177,18 @@ int main(int argc, char *argv[]) {
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return 0;
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return 0;
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}
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}
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#if defined(__linux__)
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/* Restore tty switching */
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if (lock_tty_switching) {
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if (term != -1 && (ioctl(term, VT_UNLOCKSWITCH)) == -1) {
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perror("error unlocking TTY switching: unlocking console failed");
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}
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close(term);
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}
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#endif
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DEBUG("restoring focus to X11 window 0x%08x\n", stolen_focus);
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DEBUG("restoring focus to X11 window 0x%08x\n", stolen_focus);
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xcb_ungrab_pointer(conn, XCB_CURRENT_TIME);
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xcb_ungrab_pointer(conn, XCB_CURRENT_TIME);
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xcb_ungrab_keyboard(conn, XCB_CURRENT_TIME);
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xcb_ungrab_keyboard(conn, XCB_CURRENT_TIME);
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