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Merge from OpenBSD:

Browse Source 
o Realloc memory leak fixed which won't matter but would trigger purify
o Default to sendmail when no mailer.conf exists.

Fixed bugs in OpenBSD version:
o Add NULL termination in the right place.

Also put back the err.  free shouldn't touch errno.

Pointed out by: theo de raadt (except the NULL bug :-)
This commit is contained in:
Warner Losh 2000-01-10 03:20:13 +00:00
parent b2508fe3ad
commit ff4d7851f0
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=55705
2 changed files with 31 additions and 9 deletions
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39
usr.sbin/mailwrapper/mailwrapper.c
View File

@ -1,3 +1,4 @@
/* $OpenBSD: mailwrapper.c,v 1.6 1999/12/17 05:06:28 mickey Exp $ */
/* $NetBSD: mailwrapper.c,v 1.3 1999/05/29 18:18:15 christos Exp $ */
/* $FreeBSD$ */
@ -38,6 +39,8 @@
#include <stdlib.h>
#include <unistd.h>
#include <libutil.h>
#include <syslog.h>
#include <stdarg.h>
#include "pathnames.h"
@ -70,11 +73,20 @@ addarg(al, arg, copy)
const char *arg;
int copy;
{
char **argv2;
if (al->argc == al->maxc) {
al->maxc <<= 1;
if ((al->argv = realloc(al->argv,
al->maxc * sizeof(char *))) == NULL)
err(1, "mailwrapper");
al->maxc <<= 1;
if ((argv2 = realloc(al->argv,
al->maxc * sizeof(char *))) == NULL) {
if (al->argv)
free(al->argv);
al->argv = NULL;
err(1, "mailwrapper");
} else {
al->argv = argv2;
}
}
if (copy) {
if ((al->argv[al->argc++] = strdup(arg)) == NULL)
@ -110,8 +122,18 @@ main(argc, argv, envp)
for (len = 0; len < argc; len++)
addarg(&al, argv[len], 0);
if ((config = fopen(_PATH_MAILERCONF, "r")) == NULL)
err(1, "mailwrapper: can't open %s", _PATH_MAILERCONF);
if ((config = fopen(_PATH_MAILERCONF, "r")) == NULL) {
addarg(&al, NULL, 0);
openlog("mailwrapper", LOG_PID, LOG_MAIL);
syslog(LOG_INFO, "can't open %s, using %s as default MTA",
_PATH_MAILERCONF, _PATH_DEFAULTMTA);
closelog();
execve(_PATH_DEFAULTMTA, al.argv, envp);
freearg(&al, 0);
free(line);
err(1, "mailwrapper: execing %s", _PATH_DEFAULTMTA);
/*NOTREACHED*/
}
for (;;) {
if ((line = fparseln(config, &len, &lineno, NULL, 0)) == NULL) {
@ -152,12 +174,11 @@ main(argc, argv, envp)
(void)fclose(config);
al.argv[al.argc] = NULL;
addarg(&al, NULL, 0);
execve(to, al.argv, envp);
warn("mailwrapper: execing %s", to);
freearg(&al, 0);
free(line);
exit(1);
err(1, "mailwrapper: execing %s", to);
/*NOTREACHED*/
parse_error:
freearg(&al, 0);

1
usr.sbin/mailwrapper/pathnames.h
View File

@ -32,3 +32,4 @@
*/
#define _PATH_MAILERCONF "/etc/mail/mailer.conf"
#define _PATH_DEFAULTMTA "/usr/libexec/sendmail/sendmail"