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d7cc2e601

Denis Vlasenko

2008-08-17

FAILED Duration: 21s

Subject

showkey: new applet by Vladimir

Binary

No binary (build failed)

Architecture & Compiler Flags

Architecture: x86_64-linux-gnu Compiler: gcc (Ubuntu 11.4.0-1ubuntu1~22.04.3) 11.4.0

—

Build Log

(log yok)

Commit Diff GitHub →

console-tools/Config.in +6 -0 console-tools/Kbuild +1 -0 console-tools/showkey.c +138 -0 include/applets.h +2 -1 include/usage.h +9 -0

console-tools/Config.in+6 -0

@@ -114,4 +114,10 @@ config SETLOGCONS
	help
	This program redirects the output console of kernel messages.

+	config SHOWKEY
+	bool "showkey"
+	default n
+	help
+	Shows keys presses.
+
	endmenu

console-tools/Kbuild+1 -0

@@ -19,3 +19,4 @@ lib-$(CONFIG_RESIZE) += resize.o
	lib-$(CONFIG_SETFONT) += loadfont.o
	lib-$(CONFIG_SETKEYCODES) += setkeycodes.o
	lib-$(CONFIG_SETLOGCONS) += setlogcons.o
+	lib-$(CONFIG_SHOWKEY) += showkey.o

console-tools/showkey.c+138 -0

@@ -0,0 +1,138 @@
+	/* vi: set sw=4 ts=4: */
+	/*
+	* shows keys pressed. inspired by kbd package
+	*
+	* Copyright (C) 2008 by Vladimir Dronnikov <[email protected]>
+	*
+	* Licensed under GPLv2, see file LICENSE in this tarball for details.
+	*/
+
+	#include "libbb.h"
+	#include <linux/kd.h>
+
+	// set raw tty mode
+	// also used by microcom
+	// libbb candidates?
+	static void xget1(int fd, struct termios t, struct termios oldt)
+	{
+	tcgetattr(fd, oldt);
+	t = oldt;
+	cfmakeraw(t);
+	}
+
+	static int xset1(int fd, struct termios tio, const char device)
+	{
+	int ret = tcsetattr(fd, TCSAFLUSH, tio);
+
+	if (ret) {
+	bb_perror_msg("can't tcsetattr for %s", device);
+	}
+	return ret;
+	}
+
+	/*
+	* GLOBALS
+	*/
+	struct globals {
+	int kbmode;
+	struct termios tio, tio0;
+	};
+	#define G (*ptr_to_globals)
+	#define kbmode (G.kbmode)
+	#define tio (G.tio)
+	#define tio0 (G.tio0)
+	#define INIT_G() do { \
+	SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \
+	} while (0)
+
+
+	static void signal_handler(int signo)
+	{
+	// restore keyboard and console settings
+	xset1(STDIN_FILENO, &tio0, "stdin");
+	xioctl(STDIN_FILENO, KDSKBMODE, (void *)kbmode);
+	// alarmed? -> exit 0
+	exit(SIGALRM == signo);
+	}
+
+	int showkey_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+	int showkey_main(int argc UNUSED_PARAM, char **argv)
+	{
+	enum {
+	OPT_a = (1<<0), // display the decimal/octal/hex values of the keys
+	OPT_k = (1<<1), // display only the interpreted keycodes (default)
+	OPT_s = (1<<2), // display only the raw scan-codes
+	};
+
+	// FIXME: aks are all mutually exclusive
+	getopt32(argv, "aks");
+
+	INIT_G();
+
+	// get keyboard settings
+	xioctl(STDIN_FILENO, KDGKBMODE, &kbmode);
+	printf("kb mode was %s\n\nPress any keys. Program terminates %s\n\n",
+	kbmode == K_RAW ? "RAW" :
+	(kbmode == K_XLATE ? "XLATE" :
+	(kbmode == K_MEDIUMRAW ? "MEDIUMRAW" :
+	(kbmode == K_UNICODE ? "UNICODE" : "?UNKNOWN?")))
+	, (option_mask32 & OPT_a) ? "when CTRL+D pressed" : "10s after last keypress"
+	);
+	// prepare for raw mode
+	xget1(STDIN_FILENO, &tio, &tio0);
+	// put stdin in raw mode
+	xset1(STDIN_FILENO, &tio, "stdin");
+
+	if (option_mask32 & OPT_a) {
+	char c;
+	// just read stdin char by char
+	while (1 == safe_read(STDIN_FILENO, &c, 1)) {
+	printf("%3d 0%03o 0x%02x\r\n", c, c, c);
+	if (04 /CTRL-D/ == c)
+	break;
+	}
+	} else {
+	// we should exit on any signal
+	bb_signals(BB_FATAL_SIGS, signal_handler);
+	// set raw keyboard mode
+	xioctl(STDIN_FILENO, KDSKBMODE, (void *)((option_mask32 & OPT_k) ? K_MEDIUMRAW : K_RAW));
+
+	// read and show scancodes
+	while (1) {
+	char buf[18];
+	int i, n;
+	// setup 10s watchdog
+	alarm(10);
+	// read scancodes
+	n = read(STDIN_FILENO, buf, sizeof(buf));
+	i = 0;
+	while (i < n) {
+	char c = buf[i];
+	// show raw scancodes ordered? ->
+	if (option_mask32 & OPT_s) {
+	printf("0x%02x ", buf[i++]);
+	// show interpreted scancodes (default) ? ->
+	} else {
+	int kc;
+	if (i+2 < n && (c & 0x7f) == 0
+	&& (buf[i+1] & 0x80) != 0
+	&& (buf[i+2] & 0x80) != 0) {
+	kc = ((buf[i+1] & 0x7f) << 7) \| (buf[i+2] & 0x7f);
+	i += 3;
+	} else {
+	kc = (c & 0x7f);
+	i++;
+	}
+	printf("keycode %3d %s", kc, (c & 0x80) ? "release" : "press");
+	}
+	}
+	puts("\r");
+	}
+	}
+
+	// cleanup
+	signal_handler(SIGALRM);
+
+	// should never be here!
+	return EXIT_SUCCESS;
+	}

include/applets.h+2 -1

@@ -329,6 +329,7 @@ USE_FEATURE_SH_IS_ASH(APPLET_ODDNAME(sh, ash, _BB_DIR_BIN, _BB_SUID_NEVER, sh))
	USE_FEATURE_SH_IS_HUSH(APPLET_ODDNAME(sh, hush, _BB_DIR_BIN, _BB_SUID_NEVER, sh))
	USE_FEATURE_SH_IS_MSH(APPLET_ODDNAME(sh, msh, _BB_DIR_BIN, _BB_SUID_NEVER, sh))
	USE_SHA1SUM(APPLET_ODDNAME(sha1sum, md5_sha1_sum, _BB_DIR_USR_BIN, _BB_SUID_NEVER, sha1sum))
+	USE_SHOWKEY(APPLET(showkey, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
	USE_SLATTACH(APPLET(slattach, _BB_DIR_SBIN, _BB_SUID_NEVER))
	USE_SLEEP(APPLET_NOFORK(sleep, sleep, _BB_DIR_BIN, _BB_SUID_NEVER, sleep))
	USE_SOFTLIMIT(APPLET_ODDNAME(softlimit, chpst, _BB_DIR_USR_BIN, _BB_SUID_NEVER, softlimit))
@@ -342,7 +343,7 @@ USE_SU(APPLET(su, _BB_DIR_BIN, _BB_SUID_ALWAYS))
	USE_SULOGIN(APPLET(sulogin, _BB_DIR_SBIN, _BB_SUID_NEVER))
	USE_SUM(APPLET(sum, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
	USE_SV(APPLET(sv, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
-	USE_SVLOGD(APPLET(svlogd, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
+	USE_SVLOGD(APPLET(svlogd, _BB_DIR_USR_SBIN, _BB_SUID_NEVER))
	USE_SWAPONOFF(APPLET_ODDNAME(swapoff, swap_on_off, _BB_DIR_SBIN, _BB_SUID_NEVER,swapoff))
	USE_SWAPONOFF(APPLET_ODDNAME(swapon, swap_on_off, _BB_DIR_SBIN, _BB_SUID_NEVER, swapon))
	USE_SWITCH_ROOT(APPLET(switch_root, _BB_DIR_SBIN, _BB_SUID_NEVER))

include/usage.h+9 -0

@@ -3568,6 +3568,15 @@
	"\n -w Warn about improperly formatted SHA1 checksum lines" \
	)

+	#define showkey_trivial_usage \
+	"[-a \| -k \| -s]"
+	#define showkey_full_usage "\n\n" \
+	"Show keys pressed\n" \
+	"\nOptions:" \
+	"\n -a Display decimal/octal/hex values of the keys" \
+	"\n -k Display interpreted keycodes (default)" \
+	"\n -s Display raw scan-codes" \
+
	#define slattach_trivial_usage \
	"[-cehmLF] [-s speed] [-p protocol] DEVICEs"
	#define slattach_full_usage "\n\n" \