Add a new module, pam_opieaccess(8), which is responsible for checking
/etc/opieaccess and ~/.opiealways so we can decide what to do after pam_opie(8) fails. Sponsored by: DARPA, NAI Labs Reviewed by: ache, markm
This commit is contained in:
Dag-Erling Smørgrav
parent
5ecd6127b9
commit
f460490260
@ -34,6 +34,7 @@ SUBDIR+= pam_krb5
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.endif
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SUBDIR+= pam_nologin
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SUBDIR+= pam_opie
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SUBDIR+= pam_opieaccess
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SUBDIR+= pam_permit
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SUBDIR+= pam_radius
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SUBDIR+= pam_rootok
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@ -1,5 +1,13 @@
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.\" Copyright (c) 2001 Mark R V Murray
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.\" All rights reserved.
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.\" Copyright (c) 2002 Networks Associates Technologies, Inc.
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.\" All rights reserved.
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.\"
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.\" Portions of this software were developed for the FreeBSD Project by
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.\" ThinkSec AS and NAI Labs, the Security Research Division of Network
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.\" Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035
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.\" ("CBOSS"), as part of the DARPA CHATS research program.
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.\"
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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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@ -9,6 +17,9 @@
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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 written
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.\" permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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@ -47,6 +58,13 @@ parameter, this is the
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.Dq Li auth
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feature.
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It also provides a null function for session management.
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.Pp
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Note that this module does not enforce
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.Xr opieaccess 5
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checks.
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There is a separate module,
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.Xr pam_opieaccess 8 ,
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for this purpose.
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.Ss OPIE Authentication Module
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The OPIE authentication component
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provides functions to verify the identity of a user
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10
lib/libpam/modules/pam_opieaccess/Makefile
Normal file
10
lib/libpam/modules/pam_opieaccess/Makefile
Normal file
@ -0,0 +1,10 @@
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# $FreeBSD$
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LIB= pam_opieaccess
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SHLIB_NAME= ${LIB}.so
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SRCS= ${LIB}.c
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DPADD= ${LIBOPIE}
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LDADD= -lopie
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MAN= pam_opieaccess.8
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.include <bsd.lib.mk>
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116
lib/libpam/modules/pam_opieaccess/pam_opieaccess.8
Normal file
116
lib/libpam/modules/pam_opieaccess/pam_opieaccess.8
Normal file
@ -0,0 +1,116 @@
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.\" Copyright (c) 2001 Mark R V Murray
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.\" All rights reserved.
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.\" Copyright (c) 2002 Networks Associates Technologies, Inc.
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.\" All rights reserved.
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.\"
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.\" Portions of this software were developed for the FreeBSD Project by
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.\" ThinkSec AS and NAI Labs, the Security Research Division of Network
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.\" Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035
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.\" ("CBOSS"), as part of the DARPA CHATS research program.
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.\"
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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, this list of conditions and the following disclaimer.
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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 written
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.\" permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR 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, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" $FreeBSD$
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.\"
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.Dd January 21, 2002
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.Dt PAM_OPIEACCESS 8
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.Os
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.Sh NAME
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.Nm pam_opieaccess
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.Nd OPIEAccess PAM module
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.Sh SYNOPSIS
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.Op Ar service-name
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.Ar module-type
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.Ar control-flag
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.Pa pam_self
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.Op Ar options
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.Sh DESCRIPTION
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The
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.Nm
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module is used in conjunction with the
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.Xr pam_opie 8
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PAM module to ascertain that authentication can proceed by other means
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(such as the
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.Xr pam_unix 8
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module) even if OPIE authentication failed.
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To properly use this module,
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.Xr pam_opie 8
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should be marked
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.Dq Li sufficient ,
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and
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.Nm
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should be listed right below it and marked
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.Dq Li requisite .
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.Pp
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The
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.Nm
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module provides functionality for only one PAM category:
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authentication.
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In terms of the
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.Ar module-type
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parameter, this is the
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.Dq Li auth
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feature.
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It also provides null functions for the remaining module types.
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.Ss OPIEAccess Authentication Module
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The authentication component
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.Pq Fn pam_sm_authenticate ,
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returns
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.Dv PAM_IGNORE
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in two cases:
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.Bl -enum
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.It
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The user does not have OPIE enabled.
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.It
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The user has OPIE enabled, and the remote host is listed as a trusted
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host in
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.Pa /etc/opieaccess ,
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and the user does not have a file named
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.Pa opiealways
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in his home directory.
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.El
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.Pp
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Otherwise, it returns
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.Dv PAM_AUTH_ERR .
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.Pp
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The following options may be passed to the authentication module:
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.Bl -tag -width ".Cm no_warn"
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.It Cm debug
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.Xr syslog 3
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debugging information at
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.Dv LOG_DEBUG
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level.
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.It Cm no_warn
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suppress warning messages to the user.
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These messages include reasons why the user's authentication attempt
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was declined.
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.El
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.Sh SEE ALSO
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.Xr opie 4 ,
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.Xr opieaccess 5 ,
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.Xr pam_opie 8 ,
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.Xr pam.conf 5 ,
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.Xr pam 8
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155
lib/libpam/modules/pam_opieaccess/pam_opieaccess.c
Normal file
155
lib/libpam/modules/pam_opieaccess/pam_opieaccess.c
Normal file
@ -0,0 +1,155 @@
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/*-
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* Copyright (c) 2002 Networks Associates Technologies, Inc.
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* All rights reserved.
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*
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* This software was developed for the FreeBSD Project by ThinkSec AS and
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* NAI Labs, the Security Research Division of Network Associates, Inc.
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* under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the
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* DARPA CHATS research program.
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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, this list of conditions and the following disclaimer.
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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 written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR 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, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#define _BSD_SOURCE
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#include <opie.h>
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#include <pwd.h>
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#include <unistd.h>
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#include <syslog.h>
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#define PAM_SM_AUTH
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#define PAM_SM_ACCOUNT
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#define PAM_SM_SESSION
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#define PAM_SM_PASSWORD
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#include <security/pam_modules.h>
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#include <pam_mod_misc.h>
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PAM_EXTERN int
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pam_sm_authenticate(pam_handle_t *pamh, int flags, int argc, const char **argv)
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{
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struct options options;
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struct opie opie;
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struct passwd *pwent;
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char *luser, *rhost;
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int r;
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pam_std_option(&options, NULL, argc, argv);
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PAM_LOG("Options processed");
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r = pam_get_item(pamh, PAM_USER, (const void **)&luser);
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if (r != PAM_SUCCESS)
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PAM_RETURN(r);
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if (luser == NULL)
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PAM_RETURN(PAM_SERVICE_ERR);
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pwent = getpwnam(luser);
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if (pwent == NULL)
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PAM_RETURN(PAM_USER_UNKNOWN);
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if (opielookup(&opie, luser) != 0)
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PAM_RETURN(PAM_IGNORE);
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r = pam_get_item(pamh, PAM_RHOST, (const void **)&rhost);
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if (r != PAM_SUCCESS)
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PAM_RETURN(r);
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if (rhost == NULL)
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PAM_RETURN(PAM_SERVICE_ERR);
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if (opieaccessfile(rhost) && opiealways(pwent->pw_dir) != 0)
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PAM_RETURN(PAM_IGNORE);
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PAM_VERBOSE_ERROR("Refused; remote host is not in opieaccess");
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PAM_RETURN(PAM_AUTH_ERR);
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}
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PAM_EXTERN int
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pam_sm_setcred(pam_handle_t *pamh, int flags, int argc, const char **argv)
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{
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struct options options;
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pam_std_option(&options, NULL, argc, argv);
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PAM_LOG("Options processed");
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PAM_RETURN(PAM_SUCCESS);
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}
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PAM_EXTERN int
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pam_sm_acct_mgmt(pam_handle_t *pamh, int flags, int argc ,const char **argv)
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{
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struct options options;
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pam_std_option(&options, NULL, argc, argv);
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PAM_LOG("Options processed");
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PAM_RETURN(PAM_IGNORE);
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}
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PAM_EXTERN int
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pam_sm_chauthtok(pam_handle_t *pamh, int flags, int argc, const char **argv)
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{
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struct options options;
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pam_std_option(&options, NULL, argc, argv);
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PAM_LOG("Options processed");
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PAM_RETURN(PAM_IGNORE);
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}
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PAM_EXTERN int
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pam_sm_open_session(pam_handle_t *pamh, int flags, int argc, const char **argv)
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{
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struct options options;
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pam_std_option(&options, NULL, argc, argv);
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PAM_LOG("Options processed");
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PAM_RETURN(PAM_IGNORE);
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}
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PAM_EXTERN int
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pam_sm_close_session(pam_handle_t *pamh, int flags, int argc, const char **argv)
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{
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struct options options;
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pam_std_option(&options, NULL, argc, argv);
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PAM_LOG("Options processed");
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PAM_RETURN(PAM_IGNORE);
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}
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PAM_MODULE_ENTRY("pam_opieaccess");
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