Aren/NetBSD
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Check getchar() result for EOF.

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Call cleanup(SIGHUP) if we get local EOF, as if we've got SIGHUP.
While here, use EOF constant instead of literal -1 in an existing
check.

PR bin/53996
This commit is contained in:
uwe 2019-02-22 22:25:22 +00:00
parent 60282a8efb
commit c07928f07f
1 changed files with 22 additions and 6 deletions
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28
usr.bin/tip/tip.c
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@ -1,4 +1,4 @@
/* $NetBSD: tip.c,v 1.60 2019/02/06 14:08:50 rin Exp $ */
/* $NetBSD: tip.c,v 1.61 2019/02/22 22:25:22 uwe Exp $ */
/*
* Copyright (c) 1983, 1993
@ -42,7 +42,7 @@ __COPYRIGHT("@(#) Copyright (c) 1983, 1993\
#if 0
static char sccsid[] = "@(#)tip.c 8.1 (Berkeley) 6/6/93";
#endif
__RCSID("$NetBSD: tip.c,v 1.60 2019/02/06 14:08:50 rin Exp $");
__RCSID("$NetBSD: tip.c,v 1.61 2019/02/22 22:25:22 uwe Exp $");
#endif /* not lint */
/*
@ -304,7 +304,7 @@ prompt(const char *s, char *volatile p, size_t l)
unraw();
(void)printf("%s", s);
if (setjmp(promptbuf) == 0)
while ((c = getchar()) != -1 && (*p = c) != '\n' &&
while ((c = getchar()) != EOF && (*p = c) != '\n' &&
b + l > p)
p++;
*p = '\0';
@ -329,6 +329,22 @@ intprompt(int dummy __unused)
longjmp(promptbuf, 1);
}
/*
* getchar() wrapper that checks for EOF on the local end.
*/
static char
xgetchar(void)
{
int c = getchar();
if (__predict_false(c == EOF)) {
cleanup(SIGHUP);
/* NOTREACHED */
}
return (char)c & STRIP_PAR;
}
/*
* ****TIPIN TIPIN****
*/
@ -350,7 +366,7 @@ tipin(void)
}
for (;;) {
gch = getchar()&STRIP_PAR;
gch = xgetchar();
if ((gch == character(value(ESCAPE))) && bol) {
if (!(gch = escape()))
continue;
@ -365,7 +381,7 @@ tipin(void)
(void)printf("%s\n", gch == '\r' ? "\r" : "");
continue;
} else if (!cumode && gch && gch == character(value(FORCE)))
gch = getchar()&STRIP_PAR;
gch = xgetchar();
bol = any(gch, value(EOL));
if (boolean(value(RAISE)) && islower((unsigned char)gch))
gch = toupper((unsigned char)gch);
@ -386,7 +402,7 @@ escape(void)
esctable_t *p;
char c = character(value(ESCAPE));
gch = (getchar()&STRIP_PAR);
gch = xgetchar();
for (p = etable; p->e_char; p++)
if (p->e_char == gch) {
if ((p->e_flags&PRIV) && uid)