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# $Date: 2001/04/29 04:17:19 $
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# $Id: README,v 1.1 2001/04/29 04:17:19 hartmans Exp $
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# This is the configuration file for pam_env, a PAM module to load in
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# a configurable list of environment variables for a
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# The original idea for this came from Andrew G. Morgan ...
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# Mmm. Perhaps you might like to write a pam_env module that reads a
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# default environment from a file? I can see that as REALLY
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# useful... Note it would be an "auth" module that returns PAM_IGNORE
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# for the auth part and sets the environment returning PAM_SUCCESS in
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# the setcred function...
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# What I wanted was the REMOTEHOST variable set, purely for selfish
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# reasons, and AGM didn't want it added to the SimpleApps login
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# program (which is where I added the patch). So, my first concern is
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# that variable, from there there are numerous others that might/would
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# be useful to be set: NNTPSERVER, LESS, PATH, PAGER, MANPAGER .....
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# Of course, these are a different kind of variable than REMOTEHOST in
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# that they are things that are likely to be configured by
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# administrators rather than set by logging in, how to treat them both
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# in the same config file?
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# Each line starts with the variable name, there are then two possible
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# options for each variable DEFAULT and OVERRIDE.
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# DEFAULT allows and administrator to set the value of the
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# variable to some default value, if none is supplied then the empty
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# string is assumed. The OVERRIDE option tells pam_env that it should
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# enter in its value (overriding the default value) if there is one
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# to use. OVERRIDE is not used, "" is assumed and no override will be
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# VARIABLE [DEFAULT=[value]] [OVERRIDE=[value]]
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# (Possibly non-existent) environment variables may be used in values
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# using the ${string} syntax and (possibly non-existent) PAM_ITEMs may
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# be used in values using the @{string} syntax. Both the $ and @
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# characters can be backslash escaped to be used as literal values
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# values can be delimited with "", escaped " not supported.
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# First, some special variables
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# Set the REMOTEHOST variable for any hosts that are remote, default
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# to "localhost" rather than not being set at all
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REMOTEHOST DEFAULT=localhost OVERRIDE=@{PAM_RHOST}
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# Set the DISPLAY variable if it seems reasonable
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DISPLAY DEFAULT=${REMOTEHOST}:0.0 OVERRIDE=${DISPLAY}
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# Now some simple variables
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LESS DEFAULT="M q e h15 z23 b80"
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NNTPSERVER DEFAULT=localhost
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PATH DEFAULT=${HOME}/bin:/usr/local/bin:/bin\
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:/usr/bin:/usr/local/bin/X11:/usr/bin/X11
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# silly examples of escaped variables, just to show how they work.
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DOLLARDOLLAR DEFAULT= OVERRIDE=\$${DOLLAR}
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DOLLARPLUS DEFAULT=\${REMOTEHOST}${REMOTEHOST}
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ATSIGN DEFAULT="" OVERRIDE=\@