2014-07-03 11:29:38 +00:00
|
|
|
/* $OpenBSD: auth.c,v 1.105 2014/07/03 11:16:55 djm Exp $ */
|
2002-05-22 05:06:28 +00:00
|
|
|
/*
|
2001-03-05 06:59:27 +00:00
|
|
|
* Copyright (c) 2000 Markus Friedl. All rights reserved.
|
2000-09-16 02:29:08 +00:00
|
|
|
*
|
|
|
|
* 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, this list of conditions and the following disclaimer.
|
|
|
|
* 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.
|
|
|
|
*
|
|
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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.
|
2000-04-01 01:09:21 +00:00
|
|
|
*/
|
|
|
|
|
|
|
|
#include "includes.h"
|
2006-03-15 00:45:54 +00:00
|
|
|
|
|
|
|
#include <sys/types.h>
|
|
|
|
#include <sys/stat.h>
|
2006-08-05 01:02:17 +00:00
|
|
|
#include <sys/param.h>
|
2000-04-01 01:09:21 +00:00
|
|
|
|
2006-08-05 02:54:24 +00:00
|
|
|
#include <netinet/in.h>
|
|
|
|
|
2006-07-12 12:22:46 +00:00
|
|
|
#include <errno.h>
|
2008-07-02 12:37:30 +00:00
|
|
|
#include <fcntl.h>
|
2006-03-15 00:16:59 +00:00
|
|
|
#ifdef HAVE_PATHS_H
|
2006-03-15 00:18:26 +00:00
|
|
|
# include <paths.h>
|
2006-03-15 00:16:59 +00:00
|
|
|
#endif
|
2006-07-10 10:53:08 +00:00
|
|
|
#include <pwd.h>
|
2000-05-17 12:00:02 +00:00
|
|
|
#ifdef HAVE_LOGIN_H
|
|
|
|
#include <login.h>
|
|
|
|
#endif
|
2004-02-21 22:43:15 +00:00
|
|
|
#ifdef USE_SHADOW
|
2000-06-26 01:31:33 +00:00
|
|
|
#include <shadow.h>
|
2004-02-21 22:43:15 +00:00
|
|
|
#endif
|
2001-06-10 17:24:51 +00:00
|
|
|
#ifdef HAVE_LIBGEN_H
|
2001-06-05 20:25:05 +00:00
|
|
|
#include <libgen.h>
|
2001-06-10 17:24:51 +00:00
|
|
|
#endif
|
2006-07-12 12:15:16 +00:00
|
|
|
#include <stdarg.h>
|
2006-08-05 01:37:59 +00:00
|
|
|
#include <stdio.h>
|
2006-07-24 04:13:33 +00:00
|
|
|
#include <string.h>
|
2008-07-09 10:54:37 +00:00
|
|
|
#include <unistd.h>
|
2001-06-05 20:25:05 +00:00
|
|
|
|
2001-01-22 05:34:40 +00:00
|
|
|
#include "xmalloc.h"
|
|
|
|
#include "match.h"
|
|
|
|
#include "groupaccess.h"
|
|
|
|
#include "log.h"
|
2006-08-05 02:39:39 +00:00
|
|
|
#include "buffer.h"
|
2001-01-22 05:34:40 +00:00
|
|
|
#include "servconf.h"
|
2006-08-05 02:39:39 +00:00
|
|
|
#include "key.h"
|
|
|
|
#include "hostfile.h"
|
2000-04-12 08:45:05 +00:00
|
|
|
#include "auth.h"
|
2001-01-19 04:26:52 +00:00
|
|
|
#include "auth-options.h"
|
2001-01-22 05:34:40 +00:00
|
|
|
#include "canohost.h"
|
2001-06-25 04:30:16 +00:00
|
|
|
#include "uidswap.h"
|
2002-03-22 03:04:08 +00:00
|
|
|
#include "misc.h"
|
2002-05-15 16:16:14 +00:00
|
|
|
#include "packet.h"
|
2005-02-02 06:10:11 +00:00
|
|
|
#include "loginrec.h"
|
2006-08-05 02:39:39 +00:00
|
|
|
#ifdef GSSAPI
|
|
|
|
#include "ssh-gss.h"
|
|
|
|
#endif
|
2010-03-04 10:53:35 +00:00
|
|
|
#include "authfile.h"
|
2005-02-02 13:20:53 +00:00
|
|
|
#include "monitor_wrap.h"
|
2013-01-18 00:44:04 +00:00
|
|
|
#include "krl.h"
|
2013-06-01 21:41:51 +00:00
|
|
|
#include "compat.h"
|
2000-04-12 08:45:05 +00:00
|
|
|
|
2000-04-01 01:09:21 +00:00
|
|
|
/* import */
|
|
|
|
extern ServerOptions options;
|
2006-03-31 12:14:23 +00:00
|
|
|
extern int use_privsep;
|
2003-07-08 12:59:59 +00:00
|
|
|
extern Buffer loginmsg;
|
2006-09-07 00:36:43 +00:00
|
|
|
extern struct passwd *privsep_pw;
|
2000-04-01 01:09:21 +00:00
|
|
|
|
2002-05-15 16:16:14 +00:00
|
|
|
/* Debugging messages */
|
|
|
|
Buffer auth_debug;
|
|
|
|
int auth_debug_init;
|
|
|
|
|
2000-04-01 01:09:21 +00:00
|
|
|
/*
|
2001-01-14 19:11:00 +00:00
|
|
|
* Check if the user is allowed to log in via ssh. If user is listed
|
|
|
|
* in DenyUsers or one of user's groups is listed in DenyGroups, false
|
|
|
|
* will be returned. If AllowUsers isn't empty and user isn't listed
|
|
|
|
* there, or if AllowGroups isn't empty and one of user's groups isn't
|
|
|
|
* listed there, false will be returned.
|
2000-04-01 01:09:21 +00:00
|
|
|
* If the user's shell is not executable, false will be returned.
|
2000-04-16 01:18:38 +00:00
|
|
|
* Otherwise true is returned.
|
2000-04-01 01:09:21 +00:00
|
|
|
*/
|
2000-04-29 13:57:08 +00:00
|
|
|
int
|
2000-04-01 01:09:21 +00:00
|
|
|
allowed_user(struct passwd * pw)
|
|
|
|
{
|
|
|
|
struct stat st;
|
2003-08-26 04:22:12 +00:00
|
|
|
const char *hostname = NULL, *ipaddr = NULL, *passwd = NULL;
|
2005-06-17 02:59:34 +00:00
|
|
|
u_int i;
|
2004-02-21 22:43:15 +00:00
|
|
|
#ifdef USE_SHADOW
|
2003-08-25 01:51:19 +00:00
|
|
|
struct spwd *spw = NULL;
|
2003-01-07 01:19:32 +00:00
|
|
|
#endif
|
2000-04-01 01:09:21 +00:00
|
|
|
|
|
|
|
/* Shouldn't be called if pw is NULL, but better safe than sorry... */
|
2001-01-14 19:11:00 +00:00
|
|
|
if (!pw || !pw->pw_name)
|
2000-04-01 01:09:21 +00:00
|
|
|
return 0;
|
|
|
|
|
2004-02-21 22:43:15 +00:00
|
|
|
#ifdef USE_SHADOW
|
2003-08-25 01:51:19 +00:00
|
|
|
if (!options.use_pam)
|
|
|
|
spw = getspnam(pw->pw_name);
|
|
|
|
#ifdef HAS_SHADOW_EXPIRE
|
2004-02-21 22:43:15 +00:00
|
|
|
if (!options.use_pam && spw != NULL && auth_shadow_acctexpired(spw))
|
|
|
|
return 0;
|
2003-08-25 01:51:19 +00:00
|
|
|
#endif /* HAS_SHADOW_EXPIRE */
|
2004-02-21 22:43:15 +00:00
|
|
|
#endif /* USE_SHADOW */
|
2003-08-25 01:51:19 +00:00
|
|
|
|
2003-11-21 12:48:55 +00:00
|
|
|
/* grab passwd field for locked account check */
|
2008-07-04 22:59:43 +00:00
|
|
|
passwd = pw->pw_passwd;
|
2004-02-21 22:43:15 +00:00
|
|
|
#ifdef USE_SHADOW
|
2003-08-25 01:51:19 +00:00
|
|
|
if (spw != NULL)
|
2007-03-26 16:35:28 +00:00
|
|
|
#ifdef USE_LIBIAF
|
2005-08-26 20:15:19 +00:00
|
|
|
passwd = get_iaf_password(pw);
|
|
|
|
#else
|
2003-08-25 01:51:19 +00:00
|
|
|
passwd = spw->sp_pwdp;
|
2007-03-26 16:35:28 +00:00
|
|
|
#endif /* USE_LIBIAF */
|
2003-01-07 12:55:59 +00:00
|
|
|
#endif
|
|
|
|
|
2003-11-21 12:48:55 +00:00
|
|
|
/* check for locked account */
|
2003-08-26 04:22:12 +00:00
|
|
|
if (!options.use_pam && passwd && *passwd) {
|
2003-08-25 01:51:19 +00:00
|
|
|
int locked = 0;
|
|
|
|
|
|
|
|
#ifdef LOCKED_PASSWD_STRING
|
|
|
|
if (strcmp(passwd, LOCKED_PASSWD_STRING) == 0)
|
|
|
|
locked = 1;
|
|
|
|
#endif
|
|
|
|
#ifdef LOCKED_PASSWD_PREFIX
|
|
|
|
if (strncmp(passwd, LOCKED_PASSWD_PREFIX,
|
|
|
|
strlen(LOCKED_PASSWD_PREFIX)) == 0)
|
|
|
|
locked = 1;
|
|
|
|
#endif
|
|
|
|
#ifdef LOCKED_PASSWD_SUBSTR
|
|
|
|
if (strstr(passwd, LOCKED_PASSWD_SUBSTR))
|
|
|
|
locked = 1;
|
|
|
|
#endif
|
2007-03-26 16:35:28 +00:00
|
|
|
#ifdef USE_LIBIAF
|
2010-08-12 17:33:01 +00:00
|
|
|
free((void *) passwd);
|
2007-03-26 16:35:28 +00:00
|
|
|
#endif /* USE_LIBIAF */
|
2003-08-25 01:51:19 +00:00
|
|
|
if (locked) {
|
|
|
|
logit("User %.100s not allowed because account is locked",
|
|
|
|
pw->pw_name);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2000-05-18 14:03:23 +00:00
|
|
|
/*
|
2010-02-11 22:25:29 +00:00
|
|
|
* Deny if shell does not exist or is not executable unless we
|
|
|
|
* are chrooting.
|
2000-05-18 14:03:23 +00:00
|
|
|
*/
|
2010-02-11 22:25:29 +00:00
|
|
|
if (options.chroot_directory == NULL ||
|
|
|
|
strcasecmp(options.chroot_directory, "none") == 0) {
|
|
|
|
char *shell = xstrdup((pw->pw_shell[0] == '\0') ?
|
|
|
|
_PATH_BSHELL : pw->pw_shell); /* empty = /bin/sh */
|
|
|
|
|
|
|
|
if (stat(shell, &st) != 0) {
|
|
|
|
logit("User %.100s not allowed because shell %.100s "
|
|
|
|
"does not exist", pw->pw_name, shell);
|
2013-06-01 21:31:17 +00:00
|
|
|
free(shell);
|
2010-02-11 22:25:29 +00:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
if (S_ISREG(st.st_mode) == 0 ||
|
|
|
|
(st.st_mode & (S_IXOTH|S_IXUSR|S_IXGRP)) == 0) {
|
|
|
|
logit("User %.100s not allowed because shell %.100s "
|
|
|
|
"is not executable", pw->pw_name, shell);
|
2013-06-01 21:31:17 +00:00
|
|
|
free(shell);
|
2010-02-11 22:25:29 +00:00
|
|
|
return 0;
|
|
|
|
}
|
2013-06-01 21:31:17 +00:00
|
|
|
free(shell);
|
2002-03-05 01:40:37 +00:00
|
|
|
}
|
2000-04-01 01:09:21 +00:00
|
|
|
|
2005-03-14 12:17:27 +00:00
|
|
|
if (options.num_deny_users > 0 || options.num_allow_users > 0 ||
|
|
|
|
options.num_deny_groups > 0 || options.num_allow_groups > 0) {
|
2003-06-03 00:25:48 +00:00
|
|
|
hostname = get_canonical_hostname(options.use_dns);
|
2002-03-05 01:42:42 +00:00
|
|
|
ipaddr = get_remote_ipaddr();
|
|
|
|
}
|
|
|
|
|
2000-04-01 01:09:21 +00:00
|
|
|
/* Return false if user is listed in DenyUsers */
|
|
|
|
if (options.num_deny_users > 0) {
|
|
|
|
for (i = 0; i < options.num_deny_users; i++)
|
2002-03-22 02:54:23 +00:00
|
|
|
if (match_user(pw->pw_name, hostname, ipaddr,
|
2002-03-05 01:40:37 +00:00
|
|
|
options.deny_users[i])) {
|
2005-01-24 10:56:48 +00:00
|
|
|
logit("User %.100s from %.100s not allowed "
|
|
|
|
"because listed in DenyUsers",
|
|
|
|
pw->pw_name, hostname);
|
2000-04-01 01:09:21 +00:00
|
|
|
return 0;
|
2002-03-05 01:40:37 +00:00
|
|
|
}
|
2000-04-01 01:09:21 +00:00
|
|
|
}
|
|
|
|
/* Return false if AllowUsers isn't empty and user isn't listed there */
|
|
|
|
if (options.num_allow_users > 0) {
|
|
|
|
for (i = 0; i < options.num_allow_users; i++)
|
2002-03-22 02:54:23 +00:00
|
|
|
if (match_user(pw->pw_name, hostname, ipaddr,
|
2001-07-04 04:56:44 +00:00
|
|
|
options.allow_users[i]))
|
2000-04-01 01:09:21 +00:00
|
|
|
break;
|
|
|
|
/* i < options.num_allow_users iff we break for loop */
|
2002-03-05 01:40:37 +00:00
|
|
|
if (i >= options.num_allow_users) {
|
2005-01-24 10:56:48 +00:00
|
|
|
logit("User %.100s from %.100s not allowed because "
|
|
|
|
"not listed in AllowUsers", pw->pw_name, hostname);
|
2000-04-01 01:09:21 +00:00
|
|
|
return 0;
|
2002-03-05 01:40:37 +00:00
|
|
|
}
|
2000-04-01 01:09:21 +00:00
|
|
|
}
|
|
|
|
if (options.num_deny_groups > 0 || options.num_allow_groups > 0) {
|
2001-01-14 19:11:00 +00:00
|
|
|
/* Get the user's group access list (primary and supplementary) */
|
2002-03-05 01:40:37 +00:00
|
|
|
if (ga_init(pw->pw_name, pw->pw_gid) == 0) {
|
2005-01-24 10:56:48 +00:00
|
|
|
logit("User %.100s from %.100s not allowed because "
|
|
|
|
"not in any group", pw->pw_name, hostname);
|
2000-04-01 01:09:21 +00:00
|
|
|
return 0;
|
2002-03-05 01:40:37 +00:00
|
|
|
}
|
2000-04-01 01:09:21 +00:00
|
|
|
|
2001-01-14 19:11:00 +00:00
|
|
|
/* Return false if one of user's groups is listed in DenyGroups */
|
|
|
|
if (options.num_deny_groups > 0)
|
|
|
|
if (ga_match(options.deny_groups,
|
|
|
|
options.num_deny_groups)) {
|
|
|
|
ga_free();
|
2005-01-24 10:56:48 +00:00
|
|
|
logit("User %.100s from %.100s not allowed "
|
|
|
|
"because a group is listed in DenyGroups",
|
|
|
|
pw->pw_name, hostname);
|
2000-04-01 01:09:21 +00:00
|
|
|
return 0;
|
2001-01-14 19:11:00 +00:00
|
|
|
}
|
2000-04-01 01:09:21 +00:00
|
|
|
/*
|
2001-01-14 19:11:00 +00:00
|
|
|
* Return false if AllowGroups isn't empty and one of user's groups
|
2000-04-01 01:09:21 +00:00
|
|
|
* isn't listed there
|
|
|
|
*/
|
2001-01-14 19:11:00 +00:00
|
|
|
if (options.num_allow_groups > 0)
|
|
|
|
if (!ga_match(options.allow_groups,
|
|
|
|
options.num_allow_groups)) {
|
|
|
|
ga_free();
|
2005-01-24 10:56:48 +00:00
|
|
|
logit("User %.100s from %.100s not allowed "
|
|
|
|
"because none of user's groups are listed "
|
|
|
|
"in AllowGroups", pw->pw_name, hostname);
|
2000-04-01 01:09:21 +00:00
|
|
|
return 0;
|
2001-01-14 19:11:00 +00:00
|
|
|
}
|
|
|
|
ga_free();
|
2000-04-01 01:09:21 +00:00
|
|
|
}
|
|
|
|
|
2004-06-23 03:45:24 +00:00
|
|
|
#ifdef CUSTOM_SYS_AUTH_ALLOWED_USER
|
2005-02-15 10:45:57 +00:00
|
|
|
if (!sys_auth_allowed_user(pw, &loginmsg))
|
2004-06-23 03:45:24 +00:00
|
|
|
return 0;
|
|
|
|
#endif
|
2000-04-01 01:09:21 +00:00
|
|
|
|
|
|
|
/* We found no reason not to let this user try to log on... */
|
|
|
|
return 1;
|
|
|
|
}
|
2001-01-19 04:26:52 +00:00
|
|
|
|
2013-06-01 21:41:51 +00:00
|
|
|
void
|
|
|
|
auth_info(Authctxt *authctxt, const char *fmt, ...)
|
|
|
|
{
|
|
|
|
va_list ap;
|
|
|
|
int i;
|
|
|
|
|
|
|
|
free(authctxt->info);
|
|
|
|
authctxt->info = NULL;
|
|
|
|
|
|
|
|
va_start(ap, fmt);
|
|
|
|
i = vasprintf(&authctxt->info, fmt, ap);
|
|
|
|
va_end(ap);
|
|
|
|
|
|
|
|
if (i < 0 || authctxt->info == NULL)
|
|
|
|
fatal("vasprintf failed");
|
|
|
|
}
|
|
|
|
|
2001-01-19 04:26:52 +00:00
|
|
|
void
|
2012-12-02 22:53:20 +00:00
|
|
|
auth_log(Authctxt *authctxt, int authenticated, int partial,
|
2013-06-01 21:41:51 +00:00
|
|
|
const char *method, const char *submethod)
|
2001-01-19 04:26:52 +00:00
|
|
|
{
|
|
|
|
void (*authlog) (const char *fmt,...) = verbose;
|
|
|
|
char *authmsg;
|
|
|
|
|
2006-03-31 12:14:23 +00:00
|
|
|
if (use_privsep && !mm_is_monitor() && !authctxt->postponed)
|
|
|
|
return;
|
|
|
|
|
2001-01-19 04:26:52 +00:00
|
|
|
/* Raise logging level */
|
|
|
|
if (authenticated == 1 ||
|
|
|
|
!authctxt->valid ||
|
2004-05-24 00:36:23 +00:00
|
|
|
authctxt->failures >= options.max_authtries / 2 ||
|
2001-01-19 04:26:52 +00:00
|
|
|
strcmp(method, "password") == 0)
|
2003-04-09 11:12:00 +00:00
|
|
|
authlog = logit;
|
2001-01-19 04:26:52 +00:00
|
|
|
|
|
|
|
if (authctxt->postponed)
|
|
|
|
authmsg = "Postponed";
|
2012-12-02 22:53:20 +00:00
|
|
|
else if (partial)
|
|
|
|
authmsg = "Partial";
|
2001-01-19 04:26:52 +00:00
|
|
|
else
|
|
|
|
authmsg = authenticated ? "Accepted" : "Failed";
|
|
|
|
|
2013-06-01 21:41:51 +00:00
|
|
|
authlog("%s %s%s%s for %s%.100s from %.200s port %d %s%s%s",
|
2001-01-19 04:26:52 +00:00
|
|
|
authmsg,
|
|
|
|
method,
|
2012-12-02 22:53:20 +00:00
|
|
|
submethod != NULL ? "/" : "", submethod == NULL ? "" : submethod,
|
2004-08-12 12:40:24 +00:00
|
|
|
authctxt->valid ? "" : "invalid user ",
|
2001-11-12 00:06:06 +00:00
|
|
|
authctxt->user,
|
2001-01-19 04:26:52 +00:00
|
|
|
get_remote_ipaddr(),
|
|
|
|
get_remote_port(),
|
2013-06-01 21:41:51 +00:00
|
|
|
compat20 ? "ssh2" : "ssh1",
|
|
|
|
authctxt->info != NULL ? ": " : "",
|
|
|
|
authctxt->info != NULL ? authctxt->info : "");
|
|
|
|
free(authctxt->info);
|
|
|
|
authctxt->info = NULL;
|
2002-07-04 00:27:21 +00:00
|
|
|
|
2003-05-02 13:42:25 +00:00
|
|
|
#ifdef CUSTOM_FAILED_LOGIN
|
2005-02-02 12:30:24 +00:00
|
|
|
if (authenticated == 0 && !authctxt->postponed &&
|
|
|
|
(strcmp(method, "password") == 0 ||
|
2005-02-04 04:19:44 +00:00
|
|
|
strncmp(method, "keyboard-interactive", 20) == 0 ||
|
|
|
|
strcmp(method, "challenge-response") == 0))
|
2005-02-02 06:10:11 +00:00
|
|
|
record_failed_login(authctxt->user,
|
|
|
|
get_canonical_hostname(options.use_dns), "ssh");
|
2006-08-30 12:33:09 +00:00
|
|
|
# ifdef WITH_AIXAUTHENTICATE
|
|
|
|
if (authenticated)
|
|
|
|
sys_auth_record_login(authctxt->user,
|
|
|
|
get_canonical_hostname(options.use_dns), "ssh", &loginmsg);
|
|
|
|
# endif
|
2003-05-02 13:42:25 +00:00
|
|
|
#endif
|
2005-02-08 10:52:47 +00:00
|
|
|
#ifdef SSH_AUDIT_EVENTS
|
2006-05-21 08:26:40 +00:00
|
|
|
if (authenticated == 0 && !authctxt->postponed)
|
|
|
|
audit_event(audit_classify_auth(method));
|
2005-02-02 13:20:53 +00:00
|
|
|
#endif
|
2001-01-19 04:26:52 +00:00
|
|
|
}
|
|
|
|
|
2014-07-03 11:29:38 +00:00
|
|
|
|
|
|
|
void
|
|
|
|
auth_maxtries_exceeded(Authctxt *authctxt)
|
|
|
|
{
|
|
|
|
packet_disconnect("Too many authentication failures for "
|
|
|
|
"%s%.100s from %.200s port %d %s",
|
|
|
|
authctxt->valid ? "" : "invalid user ",
|
|
|
|
authctxt->user,
|
|
|
|
get_remote_ipaddr(),
|
|
|
|
get_remote_port(),
|
|
|
|
compat20 ? "ssh2" : "ssh1");
|
|
|
|
/* NOTREACHED */
|
|
|
|
}
|
|
|
|
|
2001-01-19 04:26:52 +00:00
|
|
|
/*
|
2001-02-15 03:08:27 +00:00
|
|
|
* Check whether root logins are disallowed.
|
2001-01-19 04:26:52 +00:00
|
|
|
*/
|
|
|
|
int
|
2012-12-02 22:53:20 +00:00
|
|
|
auth_root_allowed(const char *method)
|
2001-01-19 04:26:52 +00:00
|
|
|
{
|
2001-02-15 03:08:27 +00:00
|
|
|
switch (options.permit_root_login) {
|
|
|
|
case PERMIT_YES:
|
2001-01-19 04:26:52 +00:00
|
|
|
return 1;
|
2001-02-15 03:08:27 +00:00
|
|
|
case PERMIT_NO_PASSWD:
|
|
|
|
if (strcmp(method, "password") != 0)
|
|
|
|
return 1;
|
|
|
|
break;
|
|
|
|
case PERMIT_FORCED_ONLY:
|
|
|
|
if (forced_command) {
|
2003-04-09 10:59:48 +00:00
|
|
|
logit("Root login accepted for forced command.");
|
2001-02-15 03:08:27 +00:00
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
break;
|
2001-01-19 04:26:52 +00:00
|
|
|
}
|
2003-04-09 10:59:48 +00:00
|
|
|
logit("ROOT LOGIN REFUSED FROM %.200s", get_remote_ipaddr());
|
2001-02-15 03:08:27 +00:00
|
|
|
return 0;
|
2001-01-19 04:26:52 +00:00
|
|
|
}
|
2001-06-05 20:25:05 +00:00
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Given a template and a passwd structure, build a filename
|
|
|
|
* by substituting % tokenised options. Currently, %% becomes '%',
|
|
|
|
* %h becomes the home directory and %u the username.
|
|
|
|
*
|
|
|
|
* This returns a buffer allocated by xmalloc.
|
|
|
|
*/
|
2011-05-29 11:39:36 +00:00
|
|
|
char *
|
2005-06-16 03:18:34 +00:00
|
|
|
expand_authorized_keys(const char *filename, struct passwd *pw)
|
2001-06-05 20:25:05 +00:00
|
|
|
{
|
2006-03-26 03:19:21 +00:00
|
|
|
char *file, ret[MAXPATHLEN];
|
|
|
|
int i;
|
2001-06-05 20:25:05 +00:00
|
|
|
|
2005-06-16 03:18:34 +00:00
|
|
|
file = percent_expand(filename, "h", pw->pw_dir,
|
|
|
|
"u", pw->pw_name, (char *)NULL);
|
2001-06-05 20:25:05 +00:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Ensure that filename starts anchored. If not, be backward
|
|
|
|
* compatible and prepend the '%h/'
|
|
|
|
*/
|
2005-06-16 03:18:34 +00:00
|
|
|
if (*file == '/')
|
|
|
|
return (file);
|
|
|
|
|
2006-03-26 03:19:21 +00:00
|
|
|
i = snprintf(ret, sizeof(ret), "%s/%s", pw->pw_dir, file);
|
|
|
|
if (i < 0 || (size_t)i >= sizeof(ret))
|
2005-06-16 03:18:34 +00:00
|
|
|
fatal("expand_authorized_keys: path too long");
|
2013-06-01 21:31:17 +00:00
|
|
|
free(file);
|
2006-03-26 03:19:21 +00:00
|
|
|
return (xstrdup(ret));
|
2001-06-05 20:25:05 +00:00
|
|
|
}
|
|
|
|
|
2010-05-10 01:58:03 +00:00
|
|
|
char *
|
|
|
|
authorized_principals_file(struct passwd *pw)
|
|
|
|
{
|
2012-04-22 01:21:43 +00:00
|
|
|
if (options.authorized_principals_file == NULL ||
|
|
|
|
strcasecmp(options.authorized_principals_file, "none") == 0)
|
2010-05-10 01:58:03 +00:00
|
|
|
return NULL;
|
|
|
|
return expand_authorized_keys(options.authorized_principals_file, pw);
|
|
|
|
}
|
|
|
|
|
2001-06-25 04:30:16 +00:00
|
|
|
/* return ok if key exists in sysfile or userfile */
|
|
|
|
HostStatus
|
|
|
|
check_key_in_hostfiles(struct passwd *pw, Key *key, const char *host,
|
|
|
|
const char *sysfile, const char *userfile)
|
|
|
|
{
|
|
|
|
char *user_hostfile;
|
|
|
|
struct stat st;
|
2001-12-06 16:32:47 +00:00
|
|
|
HostStatus host_status;
|
2010-12-01 01:21:51 +00:00
|
|
|
struct hostkeys *hostkeys;
|
|
|
|
const struct hostkey_entry *found;
|
2001-06-25 04:30:16 +00:00
|
|
|
|
2010-12-01 01:21:51 +00:00
|
|
|
hostkeys = init_hostkeys();
|
|
|
|
load_hostkeys(hostkeys, host, sysfile);
|
|
|
|
if (userfile != NULL) {
|
2001-06-25 04:30:16 +00:00
|
|
|
user_hostfile = tilde_expand_filename(userfile, pw->pw_uid);
|
|
|
|
if (options.strict_modes &&
|
|
|
|
(stat(user_hostfile, &st) == 0) &&
|
|
|
|
((st.st_uid != 0 && st.st_uid != pw->pw_uid) ||
|
2001-12-21 03:45:46 +00:00
|
|
|
(st.st_mode & 022) != 0)) {
|
2003-04-09 10:59:48 +00:00
|
|
|
logit("Authentication refused for %.100s: "
|
2001-06-25 04:30:16 +00:00
|
|
|
"bad owner or modes for %.200s",
|
|
|
|
pw->pw_name, user_hostfile);
|
2010-06-25 23:39:25 +00:00
|
|
|
auth_debug_add("Ignored %.200s: bad ownership or modes",
|
|
|
|
user_hostfile);
|
2001-06-25 04:30:16 +00:00
|
|
|
} else {
|
|
|
|
temporarily_use_uid(pw);
|
2010-12-01 01:21:51 +00:00
|
|
|
load_hostkeys(hostkeys, host, user_hostfile);
|
2001-06-25 04:30:16 +00:00
|
|
|
restore_uid();
|
|
|
|
}
|
2013-06-01 21:31:17 +00:00
|
|
|
free(user_hostfile);
|
2001-06-25 04:30:16 +00:00
|
|
|
}
|
2010-12-01 01:21:51 +00:00
|
|
|
host_status = check_key_in_hostkeys(hostkeys, key, &found);
|
|
|
|
if (host_status == HOST_REVOKED)
|
|
|
|
error("WARNING: revoked key for %s attempted authentication",
|
|
|
|
found->host);
|
|
|
|
else if (host_status == HOST_OK)
|
|
|
|
debug("%s: key for %s found at %s:%ld", __func__,
|
|
|
|
found->host, found->file, found->line);
|
|
|
|
else
|
|
|
|
debug("%s: key for host %s not found", __func__, host);
|
|
|
|
|
|
|
|
free_hostkeys(hostkeys);
|
2001-06-25 04:30:16 +00:00
|
|
|
|
|
|
|
return host_status;
|
|
|
|
}
|
|
|
|
|
2001-06-05 20:25:05 +00:00
|
|
|
/*
|
2012-10-30 21:58:58 +00:00
|
|
|
* Check a given path for security. This is defined as all components
|
2002-08-20 18:42:13 +00:00
|
|
|
* of the path to the file must be owned by either the owner of
|
2001-06-05 20:27:53 +00:00
|
|
|
* of the file or root and no directories must be group or world writable.
|
2001-06-05 20:25:05 +00:00
|
|
|
*
|
|
|
|
* XXX Should any specific check be done for sym links ?
|
|
|
|
*
|
2013-02-12 00:02:27 +00:00
|
|
|
* Takes a file name, its stat information (preferably from fstat() to
|
2012-10-30 21:58:58 +00:00
|
|
|
* avoid races), the uid of the expected owner, their home directory and an
|
2001-06-05 20:25:05 +00:00
|
|
|
* error buffer plus max size as arguments.
|
|
|
|
*
|
|
|
|
* Returns 0 on success and -1 on failure
|
|
|
|
*/
|
2012-10-30 21:58:58 +00:00
|
|
|
int
|
|
|
|
auth_secure_path(const char *name, struct stat *stp, const char *pw_dir,
|
|
|
|
uid_t uid, char *err, size_t errlen)
|
2001-06-05 20:25:05 +00:00
|
|
|
{
|
2001-10-03 17:55:26 +00:00
|
|
|
char buf[MAXPATHLEN], homedir[MAXPATHLEN];
|
2001-06-05 20:25:05 +00:00
|
|
|
char *cp;
|
2002-11-09 15:45:12 +00:00
|
|
|
int comparehome = 0;
|
2001-06-05 20:25:05 +00:00
|
|
|
struct stat st;
|
|
|
|
|
2012-10-30 21:58:58 +00:00
|
|
|
if (realpath(name, buf) == NULL) {
|
|
|
|
snprintf(err, errlen, "realpath %s failed: %s", name,
|
2001-06-05 20:25:05 +00:00
|
|
|
strerror(errno));
|
|
|
|
return -1;
|
|
|
|
}
|
2012-10-30 21:58:58 +00:00
|
|
|
if (pw_dir != NULL && realpath(pw_dir, homedir) != NULL)
|
2002-11-09 15:45:12 +00:00
|
|
|
comparehome = 1;
|
2001-06-05 20:25:05 +00:00
|
|
|
|
2012-10-30 21:58:58 +00:00
|
|
|
if (!S_ISREG(stp->st_mode)) {
|
|
|
|
snprintf(err, errlen, "%s is not a regular file", buf);
|
|
|
|
return -1;
|
|
|
|
}
|
2013-03-12 00:31:05 +00:00
|
|
|
if ((!platform_sys_dir_uid(stp->st_uid) && stp->st_uid != uid) ||
|
2012-10-30 21:58:58 +00:00
|
|
|
(stp->st_mode & 022) != 0) {
|
2001-06-05 20:25:05 +00:00
|
|
|
snprintf(err, errlen, "bad ownership or modes for file %s",
|
|
|
|
buf);
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* for each component of the canonical path, walking upwards */
|
|
|
|
for (;;) {
|
|
|
|
if ((cp = dirname(buf)) == NULL) {
|
|
|
|
snprintf(err, errlen, "dirname() failed");
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
strlcpy(buf, cp, sizeof(buf));
|
|
|
|
|
|
|
|
if (stat(buf, &st) < 0 ||
|
2013-03-12 00:31:05 +00:00
|
|
|
(!platform_sys_dir_uid(st.st_uid) && st.st_uid != uid) ||
|
2001-06-05 20:25:05 +00:00
|
|
|
(st.st_mode & 022) != 0) {
|
2001-12-21 03:45:46 +00:00
|
|
|
snprintf(err, errlen,
|
2001-06-05 20:25:05 +00:00
|
|
|
"bad ownership or modes for directory %s", buf);
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
2010-01-13 11:42:34 +00:00
|
|
|
/* If are past the homedir then we can stop */
|
2011-05-29 11:40:42 +00:00
|
|
|
if (comparehome && strcmp(homedir, buf) == 0)
|
2001-07-14 02:21:34 +00:00
|
|
|
break;
|
2011-05-29 11:40:42 +00:00
|
|
|
|
2001-06-05 20:25:05 +00:00
|
|
|
/*
|
|
|
|
* dirname should always complete with a "/" path,
|
|
|
|
* but we can be paranoid and check for "." too
|
|
|
|
*/
|
|
|
|
if ((strcmp("/", buf) == 0) || (strcmp(".", buf) == 0))
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
2002-03-22 01:24:38 +00:00
|
|
|
|
2012-10-30 21:58:58 +00:00
|
|
|
/*
|
|
|
|
* Version of secure_path() that accepts an open file descriptor to
|
|
|
|
* avoid races.
|
|
|
|
*
|
|
|
|
* Returns 0 on success and -1 on failure
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
secure_filename(FILE *f, const char *file, struct passwd *pw,
|
|
|
|
char *err, size_t errlen)
|
|
|
|
{
|
|
|
|
struct stat st;
|
|
|
|
|
|
|
|
/* check the open file to avoid races */
|
|
|
|
if (fstat(fileno(f), &st) < 0) {
|
|
|
|
snprintf(err, errlen, "cannot stat file %s: %s",
|
2013-01-09 04:54:48 +00:00
|
|
|
file, strerror(errno));
|
2012-10-30 21:58:58 +00:00
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
return auth_secure_path(file, &st, pw->pw_dir, pw->pw_uid, err, errlen);
|
|
|
|
}
|
|
|
|
|
2010-05-10 01:58:03 +00:00
|
|
|
static FILE *
|
|
|
|
auth_openfile(const char *file, struct passwd *pw, int strict_modes,
|
|
|
|
int log_missing, char *file_type)
|
2008-07-02 12:37:30 +00:00
|
|
|
{
|
|
|
|
char line[1024];
|
|
|
|
struct stat st;
|
|
|
|
int fd;
|
|
|
|
FILE *f;
|
|
|
|
|
2010-01-10 08:27:17 +00:00
|
|
|
if ((fd = open(file, O_RDONLY|O_NONBLOCK)) == -1) {
|
2010-05-10 01:58:03 +00:00
|
|
|
if (log_missing || errno != ENOENT)
|
|
|
|
debug("Could not open %s '%s': %s", file_type, file,
|
2010-01-10 08:27:17 +00:00
|
|
|
strerror(errno));
|
2008-07-02 12:37:30 +00:00
|
|
|
return NULL;
|
2010-01-10 08:27:17 +00:00
|
|
|
}
|
2008-07-02 12:37:30 +00:00
|
|
|
|
|
|
|
if (fstat(fd, &st) < 0) {
|
|
|
|
close(fd);
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
if (!S_ISREG(st.st_mode)) {
|
2010-05-10 01:58:03 +00:00
|
|
|
logit("User %s %s %s is not a regular file",
|
|
|
|
pw->pw_name, file_type, file);
|
2008-07-02 12:37:30 +00:00
|
|
|
close(fd);
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
unset_nonblock(fd);
|
|
|
|
if ((f = fdopen(fd, "r")) == NULL) {
|
|
|
|
close(fd);
|
|
|
|
return NULL;
|
|
|
|
}
|
2010-12-01 01:01:51 +00:00
|
|
|
if (strict_modes &&
|
2008-07-02 12:37:30 +00:00
|
|
|
secure_filename(f, file, pw, line, sizeof(line)) != 0) {
|
|
|
|
fclose(f);
|
|
|
|
logit("Authentication refused: %s", line);
|
2010-06-25 23:39:25 +00:00
|
|
|
auth_debug_add("Ignored %s: %s", file_type, line);
|
2008-07-02 12:37:30 +00:00
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
return f;
|
|
|
|
}
|
|
|
|
|
2010-05-10 01:58:03 +00:00
|
|
|
|
|
|
|
FILE *
|
|
|
|
auth_openkeyfile(const char *file, struct passwd *pw, int strict_modes)
|
|
|
|
{
|
|
|
|
return auth_openfile(file, pw, strict_modes, 1, "authorized keys");
|
|
|
|
}
|
|
|
|
|
|
|
|
FILE *
|
|
|
|
auth_openprincipals(const char *file, struct passwd *pw, int strict_modes)
|
|
|
|
{
|
|
|
|
return auth_openfile(file, pw, strict_modes, 0,
|
|
|
|
"authorized principals");
|
|
|
|
}
|
|
|
|
|
2002-03-22 01:24:38 +00:00
|
|
|
struct passwd *
|
|
|
|
getpwnamallow(const char *user)
|
|
|
|
{
|
2002-03-22 01:35:47 +00:00
|
|
|
#ifdef HAVE_LOGIN_CAP
|
|
|
|
extern login_cap_t *lc;
|
|
|
|
#ifdef BSD_AUTH
|
|
|
|
auth_session_t *as;
|
|
|
|
#endif
|
|
|
|
#endif
|
2002-03-22 01:24:38 +00:00
|
|
|
struct passwd *pw;
|
2012-05-19 09:37:01 +00:00
|
|
|
struct connection_info *ci = get_connection_info(1, options.use_dns);
|
2002-03-22 01:24:38 +00:00
|
|
|
|
2012-05-19 09:37:01 +00:00
|
|
|
ci->user = user;
|
|
|
|
parse_server_match_config(&options, ci);
|
2006-07-12 12:34:17 +00:00
|
|
|
|
2010-03-07 00:56:59 +00:00
|
|
|
#if defined(_AIX) && defined(HAVE_SETAUTHDB)
|
|
|
|
aix_setauthdb(user);
|
|
|
|
#endif
|
|
|
|
|
2002-03-22 01:24:38 +00:00
|
|
|
pw = getpwnam(user);
|
2010-03-07 00:56:59 +00:00
|
|
|
|
|
|
|
#if defined(_AIX) && defined(HAVE_SETAUTHDB)
|
|
|
|
aix_restoreauthdb();
|
|
|
|
#endif
|
2010-02-28 17:36:54 +00:00
|
|
|
#ifdef HAVE_CYGWIN
|
|
|
|
/*
|
|
|
|
* Windows usernames are case-insensitive. To avoid later problems
|
|
|
|
* when trying to match the username, the user is only allowed to
|
|
|
|
* login if the username is given in the same case as stored in the
|
|
|
|
* user database.
|
|
|
|
*/
|
|
|
|
if (pw != NULL && strcmp(user, pw->pw_name) != 0) {
|
|
|
|
logit("Login name %.100s does not match stored username %.100s",
|
|
|
|
user, pw->pw_name);
|
|
|
|
pw = NULL;
|
|
|
|
}
|
|
|
|
#endif
|
2002-09-21 15:26:51 +00:00
|
|
|
if (pw == NULL) {
|
2004-07-21 10:48:24 +00:00
|
|
|
logit("Invalid user %.100s from %.100s",
|
2002-09-21 15:26:51 +00:00
|
|
|
user, get_remote_ipaddr());
|
2003-05-02 13:42:25 +00:00
|
|
|
#ifdef CUSTOM_FAILED_LOGIN
|
2005-02-02 06:10:11 +00:00
|
|
|
record_failed_login(user,
|
|
|
|
get_canonical_hostname(options.use_dns), "ssh");
|
2002-11-09 16:11:10 +00:00
|
|
|
#endif
|
2005-02-08 10:52:47 +00:00
|
|
|
#ifdef SSH_AUDIT_EVENTS
|
|
|
|
audit_event(SSH_INVALID_USER);
|
|
|
|
#endif /* SSH_AUDIT_EVENTS */
|
2002-09-21 15:26:51 +00:00
|
|
|
return (NULL);
|
|
|
|
}
|
|
|
|
if (!allowed_user(pw))
|
2002-03-22 01:35:47 +00:00
|
|
|
return (NULL);
|
|
|
|
#ifdef HAVE_LOGIN_CAP
|
|
|
|
if ((lc = login_getclass(pw->pw_class)) == NULL) {
|
|
|
|
debug("unable to get login class: %s", user);
|
|
|
|
return (NULL);
|
|
|
|
}
|
|
|
|
#ifdef BSD_AUTH
|
|
|
|
if ((as = auth_open()) == NULL || auth_setpwd(as, pw) != 0 ||
|
2002-05-22 04:04:11 +00:00
|
|
|
auth_approval(as, lc, pw->pw_name, "ssh") <= 0) {
|
2002-03-22 01:35:47 +00:00
|
|
|
debug("Approval failure for %s", user);
|
2002-03-22 01:24:38 +00:00
|
|
|
pw = NULL;
|
2002-03-22 01:35:47 +00:00
|
|
|
}
|
|
|
|
if (as != NULL)
|
|
|
|
auth_close(as);
|
|
|
|
#endif
|
|
|
|
#endif
|
2002-03-22 03:08:30 +00:00
|
|
|
if (pw != NULL)
|
|
|
|
return (pwcopy(pw));
|
|
|
|
return (NULL);
|
2002-03-22 01:24:38 +00:00
|
|
|
}
|
2002-05-15 16:16:14 +00:00
|
|
|
|
2010-03-04 10:53:35 +00:00
|
|
|
/* Returns 1 if key is revoked by revoked_keys_file, 0 otherwise */
|
|
|
|
int
|
|
|
|
auth_key_is_revoked(Key *key)
|
|
|
|
{
|
2014-05-15 04:24:09 +00:00
|
|
|
#ifdef WITH_OPENSSL
|
2010-03-04 10:53:35 +00:00
|
|
|
char *key_fp;
|
|
|
|
|
|
|
|
if (options.revoked_keys_file == NULL)
|
|
|
|
return 0;
|
2013-01-18 00:44:04 +00:00
|
|
|
switch (ssh_krl_file_contains_key(options.revoked_keys_file, key)) {
|
|
|
|
case 0:
|
|
|
|
return 0; /* Not revoked */
|
|
|
|
case -2:
|
|
|
|
break; /* Not a KRL */
|
|
|
|
default:
|
|
|
|
goto revoked;
|
|
|
|
}
|
2014-05-15 04:24:09 +00:00
|
|
|
#endif
|
2013-01-18 00:44:04 +00:00
|
|
|
debug3("%s: treating %s as a key list", __func__,
|
|
|
|
options.revoked_keys_file);
|
2010-03-04 10:53:35 +00:00
|
|
|
switch (key_in_file(key, options.revoked_keys_file, 0)) {
|
|
|
|
case 0:
|
|
|
|
/* key not revoked */
|
|
|
|
return 0;
|
|
|
|
case -1:
|
|
|
|
/* Error opening revoked_keys_file: refuse all keys */
|
|
|
|
error("Revoked keys file is unreadable: refusing public key "
|
|
|
|
"authentication");
|
|
|
|
return 1;
|
2014-05-15 04:24:09 +00:00
|
|
|
#ifdef WITH_OPENSSL
|
2010-03-04 10:53:35 +00:00
|
|
|
case 1:
|
2013-01-18 00:44:04 +00:00
|
|
|
revoked:
|
2010-03-04 10:53:35 +00:00
|
|
|
/* Key revoked */
|
|
|
|
key_fp = key_fingerprint(key, SSH_FP_MD5, SSH_FP_HEX);
|
2010-03-05 03:03:03 +00:00
|
|
|
error("WARNING: authentication attempt with a revoked "
|
|
|
|
"%s key %s ", key_type(key), key_fp);
|
2013-06-01 21:31:17 +00:00
|
|
|
free(key_fp);
|
2010-03-04 10:53:35 +00:00
|
|
|
return 1;
|
2014-05-15 04:24:09 +00:00
|
|
|
#endif
|
2010-03-04 10:53:35 +00:00
|
|
|
}
|
|
|
|
fatal("key_in_file returned junk");
|
|
|
|
}
|
|
|
|
|
2002-05-15 16:16:14 +00:00
|
|
|
void
|
|
|
|
auth_debug_add(const char *fmt,...)
|
|
|
|
{
|
|
|
|
char buf[1024];
|
|
|
|
va_list args;
|
|
|
|
|
|
|
|
if (!auth_debug_init)
|
|
|
|
return;
|
|
|
|
|
|
|
|
va_start(args, fmt);
|
|
|
|
vsnprintf(buf, sizeof(buf), fmt, args);
|
|
|
|
va_end(args);
|
|
|
|
buffer_put_cstring(&auth_debug, buf);
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
auth_debug_send(void)
|
|
|
|
{
|
|
|
|
char *msg;
|
|
|
|
|
|
|
|
if (!auth_debug_init)
|
|
|
|
return;
|
|
|
|
while (buffer_len(&auth_debug)) {
|
|
|
|
msg = buffer_get_string(&auth_debug, NULL);
|
|
|
|
packet_send_debug("%s", msg);
|
2013-06-01 21:31:17 +00:00
|
|
|
free(msg);
|
2002-05-15 16:16:14 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
auth_debug_reset(void)
|
|
|
|
{
|
|
|
|
if (auth_debug_init)
|
|
|
|
buffer_clear(&auth_debug);
|
|
|
|
else {
|
|
|
|
buffer_init(&auth_debug);
|
|
|
|
auth_debug_init = 1;
|
|
|
|
}
|
|
|
|
}
|
2003-09-02 21:32:45 +00:00
|
|
|
|
|
|
|
struct passwd *
|
|
|
|
fakepw(void)
|
|
|
|
{
|
|
|
|
static struct passwd fake;
|
|
|
|
|
|
|
|
memset(&fake, 0, sizeof(fake));
|
|
|
|
fake.pw_name = "NOUSER";
|
|
|
|
fake.pw_passwd =
|
2003-11-21 12:56:47 +00:00
|
|
|
"$2a$06$r3.juUaHZDlIbQaO2dS9FuYxL1W9M81R1Tc92PoSNmzvpEqLkLGrK";
|
2013-04-23 04:25:52 +00:00
|
|
|
#ifdef HAVE_STRUCT_PASSWD_PW_GECOS
|
2003-09-02 21:32:45 +00:00
|
|
|
fake.pw_gecos = "NOUSER";
|
2013-04-23 04:25:52 +00:00
|
|
|
#endif
|
2006-12-04 22:08:54 +00:00
|
|
|
fake.pw_uid = privsep_pw == NULL ? (uid_t)-1 : privsep_pw->pw_uid;
|
|
|
|
fake.pw_gid = privsep_pw == NULL ? (gid_t)-1 : privsep_pw->pw_gid;
|
2013-04-23 04:25:52 +00:00
|
|
|
#ifdef HAVE_STRUCT_PASSWD_PW_CLASS
|
2003-09-02 21:32:45 +00:00
|
|
|
fake.pw_class = "";
|
|
|
|
#endif
|
|
|
|
fake.pw_dir = "/nonexist";
|
|
|
|
fake.pw_shell = "/nonexist";
|
|
|
|
|
|
|
|
return (&fake);
|
|
|
|
}
|