m + add log-login-lastlog

Signed-off-by: Mattias Andrée <maandree@operamail.com>

1 files changed, 51 insertions, 0 deletions

diff --git a/src/log-login-lastlog.c b/src/log-login-lastlog.c
new file mode 100644
index 0000000..fd0b617
--- /dev/null
+++ b/src/log-login-lastlog.c
@@ -0,0 +1,51 @@
+/**
+ * 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 <lastlog.h>
+#include <pwd.h>
+
+
+int do_log(void)
+{
+  struct passwd* pwd;
+  struct lastlog ll;
+  time_t t;
+  int fd;
+  
+  if (!streq(action, "login"))
+    return 0;
+  
+  if (pwd = getpwnam(username), pwd == NULL)                         return -1;
+  if (fd = open(_PATH_LASTLOG, O_RDWR, 0), fd < 0)                   return -1;
+  if (lseek(fd, (off_t)(pwd->pw_uid * sizeof(ll)), SEEK_SET) == -1)  goto fail;
+  
+  memset(&ll, 0, sizeof(ll));
+  
+  time(&t), ll.ll_time = t;
+  xstrcpy(ll.ll_line, ttyname);
+  xstrcpy(ll.ll_host, hostname);
+  
+  if (write_all(fd, (char*)&ll, sizeof(ll)))
+    goto fail;
+  
+  return close(fd), 0;
+ fail:
+  return close(fd), -1;
+}
+