core/system/base/mingetty/files/mingetty-utf8.patch

diff -Nru mingetty-1.07.orig/mingetty.c mingetty-1.07/mingetty.c
--- mingetty-1.07.orig/mingetty.c	2004-01-03 15:15:56.000000000 +0200
+++ mingetty-1.07/mingetty.c	2006-11-22 22:13:26.967910100 +0200
@@ -16,10 +16,15 @@
  * - autologin only at first login
  * - /etc/mingetty.conf that can be used instead of /etc/inittab for
  *   command line options
- * - Can UTF-8 setup be done within mingetty?
+ * - Can UTF-8 setup be done within mingetty? Let's try now :-) (VinzC)
  * - Also add /bin/login-type functionality in here?
  */
 
+/* Additional comments: Vincent Cadet <vcadet@hotmail.com> (2006-11-21)
+ * - Attempt to make mingetty support UTF-8. Modifications were imported
+ *   from Suse migetty.c 0.9.6s.
+ */
+
 #include <stdio.h>
 #include <stdlib.h>
 #include <unistd.h>
@@ -39,6 +44,19 @@
 #include <syslog.h>
 #include <sys/utsname.h>
 #include <time.h>
+#include <locale.h>
+#include <iconv.h>
+#include <wctype.h>
+#include <sys/kd.h>
+#include <sys/ttydefaults.h>
+
+#ifndef IUTF8
+# ifndef ASM_IUTF8
+#  error ASM_IUTF8 input flag not defined - Cannot define IUTF8
+# else
+#  define IUTF8	ASM_IUTF8
+# endif
+#endif
 
 /* name of this program (argv[0]) */
 static char *progname;
@@ -74,6 +92,8 @@
 static char *autologin = NULL;
 /* try to read a char before dropping to login prompt */
 static int loginpause = 0;
+/* terminal mode */
+static int mode = K_RAW;
 
 /* error() - output error messages */
 static void error (const char *fmt, ...)
@@ -187,10 +207,21 @@
 	if (fd > 2)
 		close (fd);
 
+	/* Detect mode of current keyboard setup, e.g. for UTF-8 */
+	if (ioctl(0, KDGKBMODE, &mode) < 0)
+		mode = K_RAW;
+
 	/* Write a reset string to the terminal. This is very linux-specific
 	   and should be checked for other systems. */
 	if (noclear == 0)
-		write (0, "\033c", 2);
+		/* don't write a full reset (ESC c) because this leaves the 
+		   unicode mode again if the terminal was in unicode mode
+		   and also undos the ESC sequences in CONSOLE_MAGIC which
+		   are needed for some languages/console-fonts.
+		   Just put the cursor to the home position (ESC [ H),
+		   erase everything below the cursor (ESC [ J), and set the
+		   scrolling region to the full window (ESC [ r) */
+		write (0, "\033[r\033[H\033[J", 9);
 
 	sigaction (SIGHUP, &sa_old, NULL);
 }
@@ -292,32 +323,75 @@
 
 static char *get_logname (void)
 {
-	static char logname[40];
+	static char logname[4*UT_NAMESIZE];
 	char *bp;
 	unsigned char c;
+	int ascii;
+	iconv_t ic;
 
 	tcflush (0, TCIFLUSH);		/* flush pending input */
+
+	/* Check for UTF-8 mode */
+	switch(mode) {
+		case K_UNICODE:
+			ascii = 0;
+			setlocale(LC_CTYPE, "en_US.UTF-8");
+			break;
+		case K_RAW:
+		case K_MEDIUMRAW:
+		case K_XLATE:
+		default:
+			ascii = 1;
+			setlocale(LC_CTYPE, "POSIX");
+			break;
+	}
+
 	for (*logname = 0; *logname == 0;) {
 		do_prompt (1);
 		for (bp = logname;;) {
 			if (read (0, &c, 1) < 1) {
-				if (errno == EINTR || errno == EIO
-					|| errno == ENOENT)
+				if (errno == EINTR || errno == EAGAIN) {
+					usleep(1000);
+					continue;
+				}
+				if (errno == EIO || errno == ENOENT)
 					exit (EXIT_SUCCESS);
 				error ("%s: read: %s", tty, strerror (errno));
 			}
 			if (c == '\n' || c == '\r') {
 				*bp = 0;
 				break;
-			} else if (!isprint (c))
-				error ("%s: invalid character 0x%x in login"
-					" name", tty, c);
+			}
+
+			if (ascii && !isprint (c))
+				error ("%s: invalid character 0x%x in login name", tty, c);
 			else if ((size_t)(bp - logname) >= sizeof (logname) - 1)
 				error ("%s: too long login name", tty);
-			else
-				*bp++ = c;
+
+			*bp++ = c;
 		}
 	}
+
+	if (!ascii && (ic = iconv_open("WCHAR_T", "UTF-8"))) {
+		char tmpbuf[4*sizeof(logname)], *op, *lp;
+		size_t len = bp - logname;
+		size_t out = sizeof(tmpbuf) - 1;
+		size_t wcl;
+		wint_t *wcp;
+
+		op = tmpbuf;
+		lp = logname;
+		if ((wcl = iconv(ic , &lp, &len, &op, &out)) == (size_t)-1)
+			error ("%s: invalid character conversion for login name", tty);
+		iconv_close(ic);
+
+		wcp = (wint_t*)tmpbuf;
+		wcp[wcl] = (wint_t)0;
+		while (*wcp) {
+			if (!iswprint(*wcp++))
+				error ("%s: invalid character for login name found", tty);
+ 		}
+ 	}
 	return logname;
 }