notes.splitbrain.org

User Tools

Site Tools

Trace:
sw:pam_require

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revisionPrevious revision
Next revision		Previous revision
sw:pam_require [2006/11/07 23:22] – 209.8.40.28sw:pam_require [2009/07/24 20:27] (current) – 87.234.80.129
Line 1: Line 1:
 +====== pam_require ======
  
 +This is a simple PAM account module. It is meant to be used together
 +with other modules! It allows you to require a special user or group
 +to access a service.
 +
 +It's available at http://www.splitbrain.org/go/pam_require
 +
 +===== Installation =====
 +
 +You need the pam-devel files to compile it. In Debian do:
 +  
 +  # apt-get install libpam0g-dev
 +
 +Compiling and installing __should__ be straight forward:
 +
 +  $> ./configure
 +  $> make    
 +  $> su
 +  #> make install 
 +
 +Note: on Fedora you must install the pam-devel package prior to installing modules. This can be accomplished by executing 'yum install pam-devel'.
 +
 +===== Usage =====
 +
 +The module is an account module only! It has no usage as auth,
 +password or session module! 
 +
 +**Please Note:** The Syntax has changed from Version 0.1
 +
 +It accepts usernames or groupnames as parameter. Groupnames have to
 +be given with a leading @. Just have a look at the examples below:
 +
 +This requires the user to be in a group called "dialin":
 +
 +  account    required   pam_unix.so
 +  account    required   pam_require.so @dialin
 +
 +This only allows user "joe" to login:
 +  
 +  account    required   pam_unix.so
 +  account    required   pam_require.so joe
 +
 +Here either "joe" or members of the "dialin" group may login:
 +
 +  account    required   pam_unix.so
 +  account    required   pam_require.so joe @dialin
 +
 +Since version 0.3 you may let in everybody __except__ the named group
 +or user. This example keeps out members of the lusers group:
 +
 +  account    required   pam_unix.so
 +  account    required   pam_require.so !@lusers
 +
 +Since version 0.4 you can define users and groups with spaces, just use
 +colons instead of the spaces. You should always avoid using spaces in
 +usernames and groups but sometimes it is necessary (most times some kind of
 +interaction with Microsoft products is involved). The example lets in "Joe
 +Schmoe" and members of the "Windows Users" group.
 +
 +  account    required   pam_unix.so
 +  account    required   pam_require.so Joe:Schmoe @Windows:Users
 +
 +Version 0.7 adds the possibility to do case insensitive checks using
 +the no_case option. The following matches "Joe" as well as "joe" or "JOe"
 +
 +  account    required   pam_unix.so
 +  account    required   pam_require.so no_case joe
 +
 +
 +===== Bugs / Known Issues =====
 +
 +Be careful with the negation (!). All parameters are logically OR'ed together
 +so if one statement is true access is granted. A simple example to explain -
 +Imagine this line:
 +
 +  account    required   pam_unix.so
 +  account    required   pam_require.so !@lusers !@schmocks
 +
 +This would let in all users in group schmocks that are not in group lusers.
 +To keep out both groups use two lines like this:
 +
 +  account    required   pam_unix.so
 +  account    required   pam_require.so !@lusers
 +  account    required   pam_require.so !@schmocks
 +
 +The module discards all standard parameter which are: debug, no_warn,
 +use_first_pass, try_first_pass, use_mapped_pass and expose_account. This means
 +two things: First these parameter doesn't change anything in pam_require's
 +behavior and second you can't have users with these names.
 +
 +===== Thanks =====
 +
 +To Jennifer Vesperman for her very helpful article "Writing PAM Modules"
 +at http://linux.oreillynet.com/pub/a/linux/2002/05/02/pam_modules.html
 +
 +To Jens Chr. Bachem <j.bachem@travco.de> for the negation patch.
 +
 +To Svein Olav Bjerkeset <svein.bjerkeset@vegvesen.no> for some hints what to
 +change for compiling on Solaris.
 +
 +To Scipio <scipio@freemail.hu> for pointing out some errors in my code.
 +
 +To Jon Severinsson <jon@severinsson.net> for adding the missing
 +primary group membership test
 +
 +To Alexander E. Patrakov <patrakov@ums.usu.ru> for adding control files
 +to build Debian package
 +
 +To Xim Tur i Massanet <joatumas@yahoo.es> for adding the no_case option and
 +a fix to make deny only work
 +
 +===== Feedback =====
 +
 +I'm always open to suggestions or hints that help me make my C better.
 +I'm completely new to the whole autoconf/automake stuff so any tips on
 +this are greatly appreciated.
 +
 +Just contact me at <andi@splitbrain.org> or visit it website at
 +http://www.splitbrain.org/projects/pam_require
 +
 +===== License =====
 +
 +  pam_require - A simple PAM account module
 +  Copyright (C) 2003-2009 Andreas Gohr <andi@splitbrain.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 2
 +  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, write to the Free Software
 +  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.