+/* $OpenBSD: sshlogin.c,v 1.26 2007/09/11 15:47:17 gilles Exp $ */
/*
* Author: Tatu Ylonen <ylo@cs.hut.fi>
* Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
*/
#include "includes.h"
-RCSID("$OpenBSD: sshlogin.c,v 1.3 2001/12/19 07:18:56 deraadt Exp $");
+
+#include <sys/types.h>
+#include <sys/param.h>
+#include <sys/socket.h>
+
+#include <netinet/in.h>
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <string.h>
+#include <time.h>
+#include <unistd.h>
#include "loginrec.h"
+#include "log.h"
+#include "buffer.h"
+#include "servconf.h"
+
+extern Buffer loginmsg;
+extern ServerOptions options;
/*
* Returns the time when the user last logged in. Returns 0 if the
* information is not available. This must be called before record_login.
* The host the user logged in from will be returned in buf.
*/
-
-u_long
+time_t
get_last_login_time(uid_t uid, const char *logname,
- char *buf, u_int bufsize)
+ char *buf, size_t bufsize)
{
- struct logininfo li;
+ struct logininfo li;
- login_get_lastlog(&li, uid);
- strlcpy(buf, li.hostname, bufsize);
- return li.tv_sec;
+ login_get_lastlog(&li, uid);
+ strlcpy(buf, li.hostname, bufsize);
+ return (time_t)li.tv_sec;
}
/*
- * Records that the user has logged in. I these parts of operating systems
- * were more standardized.
+ * Generate and store last login message. This must be done before
+ * login_login() is called and lastlog is updated.
*/
+static void
+store_lastlog_message(const char *user, uid_t uid)
+{
+#ifndef NO_SSH_LASTLOG
+ char *time_string, hostname[MAXHOSTNAMELEN] = "", buf[512];
+ time_t last_login_time;
+
+ if (!options.print_lastlog)
+ return;
+# ifdef CUSTOM_SYS_AUTH_GET_LASTLOGIN_MSG
+ time_string = sys_auth_get_lastlogin_msg(user, uid);
+ if (time_string != NULL) {
+ buffer_append(&loginmsg, time_string, strlen(time_string));
+ xfree(time_string);
+ }
+# else
+ last_login_time = get_last_login_time(uid, user, hostname,
+ sizeof(hostname));
+
+ if (last_login_time != 0) {
+ time_string = ctime(&last_login_time);
+ time_string[strcspn(time_string, "\n")] = '\0';
+ if (strcmp(hostname, "") == 0)
+ snprintf(buf, sizeof(buf), "Last login: %s\r\n",
+ time_string);
+ else
+ snprintf(buf, sizeof(buf), "Last login: %s from %s\r\n",
+ time_string, hostname);
+ buffer_append(&loginmsg, buf, strlen(buf));
+ }
+# endif /* CUSTOM_SYS_AUTH_GET_LASTLOGIN_MSG */
+#endif /* NO_SSH_LASTLOG */
+}
+
+/*
+ * Records that the user has logged in. I wish these parts of operating
+ * systems were more standardized.
+ */
void
-record_login(pid_t pid, const char *ttyname, const char *user, uid_t uid,
- const char *host, struct sockaddr * addr)
+record_login(pid_t pid, const char *tty, const char *user, uid_t uid,
+ const char *host, struct sockaddr *addr, socklen_t addrlen)
{
- struct logininfo *li;
+ struct logininfo *li;
+
+ /* save previous login details before writing new */
+ store_lastlog_message(user, uid);
- li = login_alloc_entry(pid, user, host, ttyname);
- login_set_addr(li, addr, sizeof(struct sockaddr));
- login_login(li);
- login_free_entry(li);
+ li = login_alloc_entry(pid, user, host, tty);
+ login_set_addr(li, addr, addrlen);
+ login_login(li);
+ login_free_entry(li);
}
#ifdef LOGIN_NEEDS_UTMPX
void
record_utmp_only(pid_t pid, const char *ttyname, const char *user,
- const char *host, struct sockaddr * addr)
+ const char *host, struct sockaddr *addr, socklen_t addrlen)
{
- struct logininfo *li;
+ struct logininfo *li;
- li = login_alloc_entry(pid, user, host, ttyname);
- login_set_addr(li, addr, sizeof(struct sockaddr));
- login_utmp_only(li);
- login_free_entry(li);
+ li = login_alloc_entry(pid, user, host, ttyname);
+ login_set_addr(li, addr, addrlen);
+ login_utmp_only(li);
+ login_free_entry(li);
}
#endif
/* Records that the user has logged out. */
-
void
-record_logout(pid_t pid, const char *ttyname)
+record_logout(pid_t pid, const char *tty, const char *user)
{
- struct logininfo *li;
+ struct logininfo *li;
- li = login_alloc_entry(pid, NULL, NULL, ttyname);
- login_logout(li);
- login_free_entry(li);
+ li = login_alloc_entry(pid, user, NULL, tty);
+ login_logout(li);
+ login_free_entry(li);
}