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/*
* 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, and the entire permission notice in its entirety,
* including the disclaimer of warranties.
* 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.
* 3. The name of the author may not be used to endorse or promote
* products derived from this software without specific prior
* written permission.
*
* ALTERNATIVELY, this product may be distributed under the terms of
* the GNU Public License, in which case the provisions of the GPL are
* required INSTEAD OF the above restrictions. (This clause is
* necessary due to a potential bad interaction between the GPL and
* the restrictions contained in a BSD-style copyright.)
*
* THIS SOFTWARE IS PROVIDED ``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 THE AUTHOR 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, 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 "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <stdarg.h>
#include <errno.h>
#include <security/pam_modules.h>
#include <security/_pam_macros.h>
#include <security/pam_ext.h>
#include "pam_private.h"
#ifndef LOG_AUTHPRIV
#define LOG_AUTHPRIV LOG_AUTH
#endif
static const char *
_pam_choice2str (int choice)
{
switch (choice)
{
case PAM_AUTHENTICATE:
return "auth";
case PAM_SETCRED:
return "setcred";
case PAM_ACCOUNT:
return "account";
case PAM_OPEN_SESSION:
case PAM_CLOSE_SESSION:
return "session";
case PAM_CHAUTHTOK:
return "chauthtok";
}
return "";
}
void
pam_vsyslog (const pam_handle_t *pamh, int priority,
const char *fmt, va_list args)
{
char *msgbuf1 = NULL, *msgbuf2 = NULL;
int save_errno = errno;
if (pamh && pamh->mod_name)
{
if (asprintf (&msgbuf1, "%s(%s:%s):", pamh->mod_name,
pamh->service_name?pamh->service_name:"<unknown>",
_pam_choice2str (pamh->choice)) < 0)
{
syslog (LOG_AUTHPRIV|LOG_ERR, "asprintf: %m");
return;
}
}
errno = save_errno;
if (vasprintf (&msgbuf2, fmt, args) < 0)
{
syslog (LOG_AUTHPRIV|LOG_ERR, "vasprintf: %m");
_pam_drop (msgbuf1);
return;
}
errno = save_errno;
syslog (LOG_AUTHPRIV|priority, "%s %s",
(msgbuf1 ? msgbuf1 : _PAM_SYSTEM_LOG_PREFIX), msgbuf2);
_pam_drop (msgbuf1);
_pam_drop (msgbuf2);
}
void
pam_syslog (const pam_handle_t *pamh, int priority,
const char *fmt, ...)
{
va_list args;
va_start (args, fmt);
pam_vsyslog (pamh, priority, fmt, args);
va_end (args);
}
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