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README

Change Passwd plugin for SquirrelMail
-------------------------------------
Thiago Melo de Paula <thiagomp@coc.com.br>
Paul Lesneiwski <pdontthink@angrynerds.com>
Ver 4.1, Apr 25, 2004

This is a Squirrelmail plugin to allow your users to change
his/her system password in /etc/passwd or /etc/shadow

A suid C program is used to access and change the password,
so note that this requires some special setup on your part.


---REQUESTING HELP-----------------------

If you have any problems getting this plugin to work, please
make sure to read the TROUBLESHOOTING section below and include
the information requested below with your help request, otherwise
you will probably be ignored.

Please send help requests to the squirrelmail-plugins mailing
list: information on this mailing list can be found on the
SquirrelMail web site. Contacting the authors of this plugin
should be your last resort (but we don't bite, either!).

Please include this information with your help request:

- Operating system name and version

- Web server name and version

- User and group that your web server is running as...

Try this from the command line if you are running
Apache and do not have this information:

egrep "^[Uu][Ss][Ee][Rr]" APACHE_CONF_FILE | sed 's/^[^ ][^ ]* \([^ ][^ ]*\).*/\1/;q'
egrep "^[Gg][Rr][Oo][Uu][Pp]" APACHE_CONF_FILE | sed 's/^[^ ][^ ]* \([^ ][^ ]*\).*/\1/;q'

Where APACHE_CONF_FILE should be replaced BY YOU with
the location of your httpd.conf Apache configuration file.
Typical locations for this file are:

/etc/httpd.conf
/etc/httpd/conf/httpd.conf

Or try to find it by doing this:

locate httpd.conf

So, for example, on a Red Hat system, I can get the user
that Apache runs as by typing this at the command line:

egrep "^[Uu][Ss][Ee][Rr]" /etc/httpd/conf/httpd.conf | sed 's/^[^ ][^ ]* \([^ ][^ ]*\).*/\1/;q'

And I get this back:

apache

- PHP version and configuration details

- A cut and paste of the directory listing for this plugin:

cd /path/to/squirrelmail/plugins/change_passwd
ls -alF

- A copy of the exact results of the output of steps 3 and 4
from the TROUBLESHOOTING section below


---TROUBLESHOOTING-----------------------

1) Please read the INSTALL file and verify that you have actually
followed every step.

2) Please verify that the ownership and permissions of the chpasswd
binary (executable) file are correct. The file should be executable
(and readable) by your web server user, and owned by root (with
suid bit set) (see step number 3 in the INSTALL file). Its listing
should appear similar to this:

-rwsr-x--- 1 root apache 9873 Oct 21 2002 chpasswd*

Read the support section above to determine if the group ownership
of this file should be "apache" or "nobody", etc. It should exactly
match the group which your web server is running as.

3) Turn on $seeOutput in config.php to see if the chpasswd program is
returning any errors of note.

4) Please turn on the $debug flag in config.php and attempt to change
your password. It will show you two commands used to run the
chpasswd program from the command line - please paste them onto
the command line EXACTLY as they are shown and see if there are any
errors.

It should look something like this:

cd /path/to/squirrelmail/plugins
../plugins/change_passwd/chpasswd 'my_user_name' 'my_old_pwd' 'my_new_pwd' 2>&1

Make sure the user name and password information matches and that
the command can be run from the command line. If you are having
problems on the command line, you might want to look for a different
version of the chpasswd program (either on the Internet or on your
own machine by typing "locate chpasswd").


---TODO----------------------------------

* Along with checking for the config.php file, check that the
permissions on the executable are correct (? this should not
be done in the case of FreeBSD... is there any reason the
permissions will be different in other contexts?)


---CHANGE LOG----------------------------

Ver 4.1, Apr 25, 2004 (Paul Lesneiwski <pdontthink@angrynerds.com>)
- Forgot to bind text domain! Thanks to Fredrick Jervfors <fredrik@fimbul.net>.
- Minor adjustment in output strings
- Minor XHTML fixes
- Added Swedish translation. Thanks to Fredrick Jervfors <fredrik@fimbul.net>.
- Removed stray debug statements.

Ver 4.0, Apr 22, 2004 (Paul Lesneiwski <pdontthink@angrynerds.com>)
- PLEASE NOTE that this version requires that you upgrade to
version 1.3 of the Compatibility Plugin
- PLEASE NOTE that due to extensive changes made in this version
that you should ENTIRELY remove your old change_passwd directory
and reinstall this version from scratch.
- Security fix: buffer overflow problem thwarted
- Security fix: correctly sanitized user input
- Updated to use MD5 password encryption (can now accomodate
passwords greater than 8 characters) (Thanks to Victor
Clodoaldo Salas Pumacayo <nmag@softhome.net>)
- Switched to gettext style internationalization instead of one-
off custom implementation. Translators please get in touch with
your .po files!
- Revised README file with detailed help and support sections
- Better organized input validation
- More secure verification of username and current password
- Lots of HTML fixes/cleanup

Ver 3.1.1, Jul 30, 2003 (Paul Lesneiwski <pdontthink@angrynerds.com>)
- Fixed FreeBSD functionality - oops! - thanks to Shane Robinson
<shane@barefeetstudios.com> for noticing!
- Added ability to specify minimum password length in config
file. The plugin will enforce the given length, however
this will not enforce password lengths in any other context!
- Added Spanish and Mexican Spanish language files (Thanks to David
Limon Romero <dlr@mega.net.mx>)

Ver 3.1, Jul 12, 2003 (Paul Lesneiwski <pdontthink@angrynerds.com>)
- Added debugging functionality
- Fixed logout link when forcing users to log out after password change
(Thanks to Robert Tom <robert@estrell.com>)
- Added support for FreeBSD's 'pw' password change utility (Thanks to
Rickard Lind <rickard.lind@ntier.se>)
- Fixed file include functionality to be more in line
with the SquirrelMail paradigm; should fix anomalous
behaviors some people were seeing
- Fixed problems when trying to keep users logged in after password change
- Force logout to both frames
- Fixed color problems with some themes
- Now escapes shell metacharacters in passwords
- Moved config.php to config.php.sample for hassle-free upgrades
- Fixed erroneous error reporting
- Added Italian language file (Thanks to Massimiliano Spini
<massimiliano.spini@outsourcing.albacom.net>)
- Added Swedish language file (Thanks to Rickard Lind
<rickard.lind@ntier.se>)
- Added Estonian language file (Thanks to Erkki Liba
<lips@annenk.tartu.ee>)
- Added Romanian language file (Thanks to Iosif Fettich
<ifettich@netsoft.ro>)
- Added German language file (Thanks to Cavegn Christian
<ichris@rubbish.ch>)
- Added Dutch language file (Thanks to Anton Osinga
<rzch0s@toonsmachine.homelinux.com>)
- Added French language file (Thanks to Lo<span class="broken-code-point">&lt;81&gt;</span>E de VAULX
<loic.de-vaulx@webinov.com>)

Ver 3.0.1, Apr 18, 2003 (Jukka Vuola <juki@linja.org>)
- Added Finnish language file

Ver 3.0, Apr 09, 2003 - (Paul Lesneiwski <pdontthink@angrynerds.com>)
- Corrections to English language file
- Lots of E_ALL fixes
- Added compatibility with SquirrelMail 1.4 (while also retaining
backward compatibility with version 1.2.x)
- Added compatibility with Plugin Updates plugin
- Added register_globals=Off compatibility
- Minor HTML formatting fixes

Ver 2.0, Out 21, 2002 - (Thiago Melo de Paula)
- I made a C program to diminish the complexity of the plugin, now you don't need worry about cgi.
- After password change, the user aren't disconnected of SM. You can choose this in the config.php.
The default is that the user don't will be disconnected.
- The config.php file have more options to configure the plugin.
- This plugin was tested with SM 1.2.7 and 1.2.8

Ver 1.1, Sep 05, 2002 - (Thiago Melo de Paula)
- The config.php file have more options to configure the plugin.
- If the password change is successful, the user will be disconnected of SM to connect with new password.
- I tried to detail the README file better.
- Removed some useless buttons. Now just have the submit button.
- Correct the number of initial version of the README file!!!!

Ver 1.0, Sep 01, 2002 - (Thiago Melo de Paula)
- Initial Version!