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/**
* cerberus-logging – Log-in logging extension for cerberus
*
* Copyright © 2014 Mattias Andrée (maandree@member.fsf.org)
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "common.h"
#include <utmp.h>
#define X(A) static const char* A = NULL;
LIST_ARGUMENTS
#undef X
static int log_action(void);
int main(int argc, char** argv)
{
int i;
for (i = 1; i < argc; i++)
{
#define X(A) if (strstr(argv[i], "--" #A "=")) A = strchr(argv[i], '=') + 1;
LIST_ARGUMENTS
#undef X
}
if (!streq(action, "login")) return 0;
if (NULL == username) return 1;
if (NULL == ttyname) return 1;
if (NULL == pid) return 1;
return -log_action();
}
static int log_action(void)
{
struct utmp ut;
struct utmp *entry;
pid_t pid_ = (pid_t)atoll(pid);
const char* ttyno = first_digit(ttyname);
memset(&ut, 0, sizeof(struct utmp));
utmpname(_PATH_UTMP);
setutent();
while ((entry = getutent()))
if (entry->ut_pid == pid_)
if ((INIT_PROCESS <= entry->ut_type) && (entry->ut_type <= DEAD_PROCESS))
break;
if ((entry == NULL) && ttyname)
{
setutent();
ut.ut_type = LOGIN_PROCESS;
xstrcpy(ut.ut_line, ttyname);
entry = getutline(&ut);
}
if ((entry == NULL) && ttyno)
{
setutent();
ut.ut_type = DEAD_PROCESS;
xstrcpy(ut.ut_id, ttyno);
entry = getutline(&ut);
}
if (entry) memcpy(&ut, entry, sizeof(struct utmp));
else memset(&ut, 0, sizeof(struct utmp));
ut.ut_type = USER_PROCESS;
ut.ut_pid = pid_;
xstrcpy(ut.ut_user, username);
xstrcpy(ut.ut_host, hostname);
xstrcpy(ut.ut_line, ttyname);
xstrcpy(ut.ut_id, first_digit(ttyname));
xmemcpy(ut.ut_addr_v6, get_hostaddress(hostname));
#ifdef _HAVE_UT_TV
{
struct timeval tv;
gettimeofday(&tv, NULL);
ut.ut_tv.tv_sec = tv.tv_sec;
ut.ut_tv.tv_usec = tv.tv_usec;
}
#else
{
time_t t;
time(&t);
ut.ut_time = t;
}
#endif
pututline(&ut);
endutent();
updwtmp(_PATH_WTMP, &ut);
return 0;
}
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