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/**
* cerberus-logging – Log-in logging extension for cerberus
*
* Copyright © 2014, 2015 Mattias Andrée (m@maandree.se)
*
* 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 <string.h>
#include <time.h>
#include <sys/time.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netdb.h>
#include <stddef.h>
#include <unistd.h>
#include <errno.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <stdlib.h>
#ifdef __GNUC__
# pragma GCC diagnostic push
# pragma GCC diagnostic ignored "-Wunused-function"
#endif
#ifndef VARDIR
#define VARDIR "/var"
#endif
#ifndef LOGDIR
#define LOGDIR VARDIR "/log"
#endif
/* ttyname is defined in <unistd.h> */
#define ttyname ttyname_
#define LIST_ARGUMENTS X(action) X(username) X(ttyname) X(pid) X(hostname)
#define streq(a, b) (!a == !b || (a && b && !strcmp(a, b)))
#define xstrcpy(d, s) (s ? snprintf(d, sizeof(d) / sizeof(char), "%s", s) : 0)
#define xmemcpy(d, s) (s ? memcpy(d, s, sizeof(d)) : NULL)
#define X(A) extern const char *A;
LIST_ARGUMENTS
#undef X
static inline const char *
first_digit(const char *str)
{
for (; str && *str; str++)
if ('0' <= *str && *str <= '9')
return str;
return NULL;
}
static const char *
get_hostaddress(const char *host)
{
static char rc[32 * 4 / 8];
struct addrinfo hints;
struct addrinfo *info = NULL;
if (!host)
return NULL;
memset(rc, 0, sizeof(rc));
memset(&hints, 0, sizeof(hints));
hints.ai_flags = AI_ADDRCONFIG;
if (getaddrinfo(host, NULL, &hints, &info) || !info)
return NULL;
if (info->ai_family == AF_INET) {
struct sockaddr_in *addr = (struct sockaddr_in *)(info->ai_addr);
memcpy(rc, &(addr->sin_addr), sizeof(addr->sin_addr));
} else if (info->ai_family == AF_INET6) {
struct sockaddr_in6 *addr = (struct sockaddr_in6 *)(info->ai_addr);
memcpy(rc, &(addr->sin6_addr), sizeof(addr->sin6_addr));
}
freeaddrinfo(info);
return rc;
}
static inline int
write_all(int fd, char *data, size_t n)
{
ssize_t wrote;
while (n > 0) {
wrote = write(fd, data, n);
if (wrote >= 0) {
data += wrote;
n -= (size_t)wrote;
} else if (errno != EINTR) {
return -1;
}
}
return 0;
}
int do_log(void);
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