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94464ed82c
PAM sessions are long running. If we create a pam session a connection to winbind is established and only closed by the destructor of the libwbclient library. If we create a wbcContext, we will free it in the end of the PAM function being called and the socket will be closed. This decreases the amount of allocated 'winbindd_cli_state' structures in winbind for every logged in user. Signed-off-by: Andreas Schneider <asn@samba.org> Reviewed-by: Volker Lendecke <vl@samba.org> Reviewed-by: Guenther Deschner <gd@samba.org> Autobuild-User(master): Andreas Schneider <asn@cryptomilk.org> Autobuild-Date(master): Fri Mar 25 17:45:24 CET 2016 on sn-devel-144
226 lines
7.4 KiB
C
226 lines
7.4 KiB
C
/*
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* Copyright (c) Andrew Tridgell <tridge@samba.org> 2000
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* Copyright (c) Tim Potter <tpot@samba.org> 2000
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* Copyright (c) Andrew Bartlettt <abartlet@samba.org> 2002
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* Copyright (c) Guenther Deschner <gd@samba.org> 2005-2008
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* Copyright (c) Jan Rêkorajski 1999.
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* Copyright (c) Andrew G. Morgan 1996-8.
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* Copyright (c) Alex O. Yuriev, 1996.
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* Copyright (c) Cristian Gafton 1996.
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* Copyright (C) Elliot Lee <sopwith@redhat.com> 1996, Red Hat Software.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, and the entire permission notice in its entirety,
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* including the disclaimer of warranties.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote
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* products derived from this software without specific prior
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* written permission.
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*
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* ALTERNATIVELY, this product may be distributed under the terms of
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* the GNU Public License, in which case the provisions of the GPL are
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* required INSTEAD OF the above restrictions. (This clause is
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* necessary due to a potential bad interaction between the GPL and
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* the restrictions contained in a BSD-style copyright.)
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*
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* THIS SOFTWARE IS PROVIDED `AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/* pam_winbind header file
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(Solaris needs some macros from Linux for common PAM code)
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Shirish Kalele 2000
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*/
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#ifndef _NSSWITCH_PAM_WINBIND_H_
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#define _NSSWITCH_PAM_WINBIND_H_
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#include "../lib/replace/replace.h"
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#include "system/syslog.h"
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#include "system/time.h"
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#include <talloc.h>
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#include "libwbclient/wbclient.h"
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#include "lib/util/tiniparser.h"
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#define MODULE_NAME "pam_winbind"
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#define PAM_SM_AUTH
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#define PAM_SM_ACCOUNT
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#define PAM_SM_PASSWORD
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#define PAM_SM_SESSION
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#ifndef PAM_WINBIND_CONFIG_FILE
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#define PAM_WINBIND_CONFIG_FILE "/etc/security/pam_winbind.conf"
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#endif
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#ifdef HAVE_LIBINTL_H
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#include <libintl.h>
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#endif
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#if defined(LINUX)
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/* newer versions of PAM have this in _pam_compat.h */
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#ifndef PAM_AUTHTOK_RECOVERY_ERR
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#define PAM_AUTHTOK_RECOVERY_ERR PAM_AUTHTOK_RECOVER_ERR
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#endif
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#else /* !LINUX */
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/* Solaris always uses dynamic pam modules */
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#define PAM_EXTERN extern
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#if defined(HAVE_SECURITY_PAM_APPL_H)
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#include <security/pam_appl.h>
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#elif defined(HAVE_PAM_PAM_APPL_H)
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#include <pam/pam_appl.h>
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#endif
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#ifndef PAM_AUTHTOK_RECOVER_ERR
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#define PAM_AUTHTOK_RECOVER_ERR PAM_AUTHTOK_RECOVERY_ERR
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#endif
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#endif /* (!)LINUX */
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#if defined(HAVE_SECURITY_PAM_MODULES_H)
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#include <security/pam_modules.h>
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#elif defined(HAVE_PAM_PAM_MODULES_H)
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#include <pam/pam_modules.h>
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#endif
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#if defined(HAVE_SECURITY__PAM_MACROS_H)
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#include <security/_pam_macros.h>
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#elif defined(HAVE_PAM__PAM_MACROS_H)
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#include <pam/_pam_macros.h>
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#else
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/* Define required macros from (Linux PAM 0.68) security/_pam_macros.h */
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#define _pam_drop_reply(/* struct pam_response * */ reply, /* int */ replies) \
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do { \
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int reply_i; \
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\
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for (reply_i=0; reply_i<replies; ++reply_i) { \
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if (reply[reply_i].resp) { \
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_pam_overwrite(reply[reply_i].resp); \
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free(reply[reply_i].resp); \
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} \
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} \
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if (reply) \
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free(reply); \
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} while (0)
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#define _pam_overwrite(x) \
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do { \
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register char *__xx__; \
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if ((__xx__=(x))) \
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while (*__xx__) \
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*__xx__++ = '\0'; \
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} while (0)
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/*
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* Don't just free it, forget it too.
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*/
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#define _pam_drop(X) SAFE_FREE(X)
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#define x_strdup(s) ( (s) ? strdup(s):NULL )
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#endif /* HAVE_SECURITY__PAM_MACROS_H */
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#ifdef HAVE_SECURITY_PAM_EXT_H
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#include <security/pam_ext.h>
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#endif
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#define WINBIND_DEBUG_ARG 0x00000001
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#define WINBIND_USE_AUTHTOK_ARG 0x00000002
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#define WINBIND_UNKNOWN_OK_ARG 0x00000004
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#define WINBIND_TRY_FIRST_PASS_ARG 0x00000008
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#define WINBIND_USE_FIRST_PASS_ARG 0x00000010
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#define WINBIND__OLD_PASSWORD 0x00000020
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#define WINBIND_REQUIRED_MEMBERSHIP 0x00000040
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#define WINBIND_KRB5_AUTH 0x00000080
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#define WINBIND_KRB5_CCACHE_TYPE 0x00000100
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#define WINBIND_CACHED_LOGIN 0x00000200
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#define WINBIND_CONFIG_FILE 0x00000400
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#define WINBIND_SILENT 0x00000800
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#define WINBIND_DEBUG_STATE 0x00001000
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#define WINBIND_WARN_PWD_EXPIRE 0x00002000
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#define WINBIND_MKHOMEDIR 0x00004000
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#if defined(HAVE_GETTEXT) && !defined(__LCLINT__)
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#define _(string) dgettext(MODULE_NAME, string)
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#else
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#define _(string) string
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#endif
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#define N_(string) string
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/*
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* here is the string to inform the user that the new passwords they
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* typed were not the same.
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*/
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#define MISTYPED_PASS _("Sorry, passwords do not match")
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#define on(x, y) (x & y)
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#define off(x, y) (!(x & y))
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#define PAM_WINBIND_NEW_AUTHTOK_REQD "PAM_WINBIND_NEW_AUTHTOK_REQD"
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#define PAM_WINBIND_NEW_AUTHTOK_REQD_DURING_AUTH "PAM_WINBIND_NEW_AUTHTOK_REQD_DURING_AUTH"
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#define PAM_WINBIND_HOMEDIR "PAM_WINBIND_HOMEDIR"
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#define PAM_WINBIND_LOGONSCRIPT "PAM_WINBIND_LOGONSCRIPT"
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#define PAM_WINBIND_LOGONSERVER "PAM_WINBIND_LOGONSERVER"
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#define PAM_WINBIND_PROFILEPATH "PAM_WINBIND_PROFILEPATH"
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#define PAM_WINBIND_PWD_LAST_SET "PAM_WINBIND_PWD_LAST_SET"
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#define SECONDS_PER_DAY 86400
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#define DEFAULT_DAYS_TO_WARN_BEFORE_PWD_EXPIRES 14
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#include "winbind_client.h"
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#define PAM_WB_REMARK_DIRECT(c,x)\
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{\
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const char *error_string = NULL; \
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error_string = _get_ntstatus_error_string(x);\
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if (error_string != NULL) {\
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_make_remark(c, PAM_ERROR_MSG, error_string);\
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} else {\
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_make_remark(c, PAM_ERROR_MSG, x);\
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};\
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};
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#define LOGON_KRB5_FAIL_CLOCK_SKEW 0x02000000
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#define PAM_WB_CACHED_LOGON(x) (x & WBC_AUTH_USER_INFO_CACHED_ACCOUNT)
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#define PAM_WB_KRB5_CLOCK_SKEW(x) (x & LOGON_KRB5_FAIL_CLOCK_SKEW)
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#define PAM_WB_GRACE_LOGON(x) ((WBC_AUTH_USER_INFO_CACHED_ACCOUNT|WBC_AUTH_USER_INFO_GRACE_LOGON) == ( x & (WBC_AUTH_USER_INFO_CACHED_ACCOUNT|WBC_AUTH_USER_INFO_GRACE_LOGON)))
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struct pwb_context {
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pam_handle_t *pamh;
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int flags;
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int argc;
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const char **argv;
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struct tiniparser_dictionary *dict;
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uint32_t ctrl;
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struct wbcContext *wbc_ctx;
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};
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#ifndef TALLOC_FREE
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#define TALLOC_FREE(ctx) do { talloc_free(ctx); ctx=NULL; } while(0)
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#endif
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#define TALLOC_ZERO_P(ctx, type) (type *)_talloc_zero(ctx, sizeof(type), #type)
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#define TALLOC_P(ctx, type) (type *)talloc_named_const(ctx, sizeof(type), #type)
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#endif /* _NSSWITCH_PAM_WINBIND_H_ */
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