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/*
* The new sysinstall program.
*
* This is probably the last program in the `sysinstall' line - the next
* generation being essentially a complete rewrite.
*
* $FreeBSD$
*
* Copyright (c) 2001
* Andrey A. Chernov. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer,
* verbatim and that no modifications are made prior to this
* point in the file.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY ANDREY A. CHERNOV ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL ANDREY A. CHERNOV OR HIS PETS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, LIFE OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*/
#include "sysinstall.h"
#include <sys/stat.h>
#include <ctype.h>
#include <ttyent.h>
#define _X_EXTENSION ".XXXXXX"
void
configTtys(void)
{
size_t len;
int t, tlen, changed;
FILE *fp, *np;
char sq, *line, *p, *q, *cp, *tptr;
char templ[sizeof(_PATH_TTYS) + sizeof(_X_EXTENSION) - 1];
struct ttyent *tnam;
if ((cp = variable_get(VAR_CONSTERM)) == NULL ||
strcmp(cp, "NO") == 0)
return;
if (!file_readable(_PATH_TTYS)) {
msgConfirm("%s not exist or not readable", _PATH_TTYS);
return;
}
if ((fp = fopen(_PATH_TTYS, "r")) == NULL) {
msgConfirm("Can't open %s for read: %s", _PATH_TTYS,
strerror(errno));
return;
}
strcpy(templ, _PATH_TTYS _X_EXTENSION);
if ((t = mkstemp(templ)) < 0) {
msgConfirm("Can't create %s: %s", templ, strerror(errno));
(void)fclose(fp);
return;
}
if (fchmod(t, 0644)) {
msgConfirm("Can't fchmod %s: %s", templ, strerror(errno));
(void)fclose(fp);
return;
}
if ((np = fdopen(t, "w")) == NULL) {
msgConfirm("Can't fdopen %s: %s", templ, strerror(errno));
(void)close(t);
(void)fclose(fp);
(void)unlink(templ);
return;
}
changed = 0;
while ((line = fgetln(fp, &len)) != NULL) {
p = line;
while (p < (line + len) && isspace((unsigned char)*p))
++p;
if (strncmp(p, "ttyv", 4) != 0) {
dump:
if (fwrite(line, len, 1, np) != 1) {
wrerr:
msgConfirm("%s: write error: %s", templ, strerror(errno));
(void)fclose(fp);
(void)fclose(np);
(void)unlink(templ);
return;
}
} else {
q = p;
while(q < (line + len) && !isspace((unsigned char)*q))
++q;
if (!isspace((unsigned char)*q))
goto dump;
sq = *q;
*q = '\0';
tnam = getttynam(p);
*q = sq;
if (tnam == NULL || tnam->ty_type == NULL ||
strcmp(tnam->ty_type, cp) == 0 ||
strncmp(tnam->ty_type, "cons", 4) != 0 ||
!isdigit((unsigned char)tnam->ty_type[4])
)
goto dump;
tlen = strlen(tnam->ty_type);
tptr = NULL;
p = ++q;
while(p < (line + len)) {
if (strncmp(p, tnam->ty_type, tlen) == 0) {
tptr = p;
break;
}
++p;
}
if (tptr == NULL)
goto dump;
changed = 1;
if (fwrite(line, tptr - line, 1, np) != 1 ||
fputs(cp, np) ||
fwrite(tptr + tlen,
len - (tptr + tlen - line), 1, np) != 1)
goto wrerr;
}
}
if (!feof(fp)) {
msgConfirm("%s: read error: %s", _PATH_TTYS, strerror(errno));
(void)fclose(fp);
(void)fclose(np);
(void)unlink(templ);
return;
}
(void)fclose(fp);
if (fclose(np)) {
if (changed)
msgConfirm("%s: close error: %s", templ, strerror(errno));
else
variable_set2(VAR_CONSTERM, "NO", 0);
(void)unlink(templ);
return;
}
if (!changed) {
(void)unlink(templ);
variable_set2(VAR_CONSTERM, "NO", 0);
return;
}
if (rename(templ, _PATH_TTYS)) {
msgConfirm("Can't rename %s to %s: %s", templ, _PATH_TTYS,
strerror(errno));
return;
}
variable_set2(VAR_CONSTERM, "NO", 0);
}
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