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getty: conditionally disable handling of all-caps terminals.

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This commit is contained in:
Denis Vlasenko 2006-10-23 10:17:34 +00:00
parent 50e77e1cc1
commit 4e70bf4359
1 changed files with 26 additions and 58 deletions
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84
loginutils/getty.c
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@ -48,6 +48,9 @@ extern void updwtmp(const char *filename, const struct utmp *ut);
* and for line editing at the same time.
*/
/* I doubt there are systems which still need this */
#undef HANDLE_ALLCAPS
#define _PATH_LOGIN "/bin/login"
/* If ISSUE is not defined, agetty will never display the contents of the
@ -133,11 +136,13 @@ static const char opt_string[] = "I:LH:f:hil:mt:wn";
/* Storage for things detected while the login name was read. */
struct chardata {
int erase; /* erase character */
int kill; /* kill character */
int eol; /* end-of-line character */
int parity; /* what parity did we see */
int capslock; /* upper case without lower case */
unsigned char erase; /* erase character */
unsigned char kill; /* kill character */
unsigned char eol; /* end-of-line character */
unsigned char parity; /* what parity did we see */
#ifdef HANDLE_ALLCAPS
unsigned char capslock; /* upper case without lower case */
#endif
};
/* Initial values for the above. */
@ -147,55 +152,11 @@ static const struct chardata init_chardata = {
DEF_KILL, /* default kill character */
13, /* default eol char */
0, /* space parity */
#ifdef HANDLE_ALLCAPS
0, /* no capslock */
#endif
};
#if 0
struct Speedtab {
long speed;
int code;
};
static const struct Speedtab speedtab[] = {
{50, B50},
{75, B75},
{110, B110},
{134, B134},
{150, B150},
{200, B200},
{300, B300},
{600, B600},
{1200, B1200},
{1800, B1800},
{2400, B2400},
{4800, B4800},
{9600, B9600},
#ifdef B19200
{19200, B19200},
#endif
#ifdef B38400
{38400, B38400},
#endif
#ifdef EXTA
{19200, EXTA},
#endif
#ifdef EXTB
{38400, EXTB},
#endif
#ifdef B57600
{57600, B57600},
#endif
#ifdef B115200
{115200, B115200},
#endif
#ifdef B230400
{230400, B230400},
#endif
{0, 0},
};
#endif
#ifdef SYSV_STYLE
#ifdef CONFIG_FEATURE_UTMP
static void update_utmp(char *line);
@ -211,7 +172,7 @@ static char *fakehost = NULL;
#ifdef DEBUGGING
#define debug(s) fprintf(dbf,s); fflush(dbf)
#define DEBUGTERM "/dev/ttyp0"
FILE *dbf;
static FILE *dbf;
#else
#define debug(s) /* nothing */
#endif
@ -415,7 +376,7 @@ static void termio_init(struct termio *tp, int speed, struct options *op)
* Initial termio settings: 8-bit characters, raw-mode, blocking i/o.
* Special characters are set after we have read the login name; all
* reads will be done in raw mode anyway. Errors will be dealt with
* lateron.
* later on.
*/
#ifdef __linux__
/* flush input and output queues, important for modems! */
@ -474,7 +435,7 @@ static void auto_baud(struct termio *tp)
/*
* Use 7-bit characters, don't block if input queue is empty. Errors will
* be dealt with lateron.
* be dealt with later on.
*/
iflag = tp->c_iflag;
@ -503,7 +464,7 @@ static void auto_baud(struct termio *tp)
}
}
}
/* Restore terminal settings. Errors will be dealt with lateron. */
/* Restore terminal settings. Errors will be dealt with later on. */
tp->c_iflag = iflag;
tp->c_cc[VMIN] = vmin;
@ -525,12 +486,13 @@ static void next_speed(struct termio *tp, struct options *op)
/* do_prompt - show login prompt, optionally preceded by /etc/issue contents */
static void do_prompt(struct options *op, struct termio *tp)
{
#ifdef ISSUE /* optional: show /etc/issue */
#ifdef ISSUE
print_login_issue(op->issue, op->tty);
#endif
print_login_prompt();
}
#ifdef HANDLE_ALLCAPS
/* caps_lock - string contains upper case without lower case */
/* returns 1 if true, 0 if false */
static int caps_lock(const char *s)
@ -540,6 +502,7 @@ static int caps_lock(const char *s)
return 0;
return 1;
}
#endif
#define logname bb_common_bufsiz1
/* get_logname - get user name, establish parity, speed, erase, kill, eol */
@ -551,7 +514,7 @@ static char *get_logname(struct options *op, struct chardata *cp, struct termio
char ascval; /* low 7 bits of input character */
int bits; /* # of "1" bits per character */
int mask; /* mask with 1 bit up */
static const char *const erase[] = { /* backspace-space-backspace */
static const char erase[][3] = { /* backspace-space-backspace */
"\010\040\010", /* space parity */
"\010\040\010", /* odd parity */
"\210\240\210", /* even parity */
@ -601,7 +564,8 @@ static char *get_logname(struct options *op, struct chardata *cp, struct termio
for (bits = 1, mask = 1; mask & 0177; mask <<= 1)
if (mask & ascval)
bits++; /* count "1" bits */
cp->parity |= ((bits & 1) ? 1 : 2);
/* ... |= 2 - even, 1 - odd */
cp->parity |= 2 - (bits & 1);
}
/* Do erase, kill and end-of-line processing. */
@ -645,12 +609,14 @@ static char *get_logname(struct options *op, struct chardata *cp, struct termio
}
/* Handle names with upper case and no lower case. */
#ifdef HANDLE_ALLCAPS
cp->capslock = caps_lock(logname);
if (cp->capslock) {
for (bp = logname; *bp; bp++)
if (isupper(*bp))
*bp = tolower(*bp); /* map name to lower case */
}
#endif
return logname;
}
@ -698,11 +664,13 @@ static void termio_final(struct options *op, struct termio *tp, struct chardata
}
/* Account for upper case without lower case. */
#ifdef HANDLE_ALLCAPS
if (cp->capslock) {
tp->c_iflag |= IUCLC;
tp->c_lflag |= XCASE;
tp->c_oflag |= OLCUC;
}
#endif
/* Optionally enable hardware flow control */
#ifdef CRTSCTS