Chapter 14. Configuration File, Defaults and Overrides

Options used:

• allow_getenv FLAG use GETENV environment variable

The LPRng options are obtained as follows:

• The compile time defaults. These are in the LPRng/src/common/vars.c file.

• If the LPRng software has been compiled with the regression testing GETENV option enabled, the configuration information in the file specified by the LPD_CONF environment variable will be used. This can only be used if you are not setuid ROOT or as ROOT as it opens severe security loopholes.

• The file specified by the config_file compile time option, usually /etc/lpd.conf or /usr/local/etc/lpd.conf, and referred to a the lpd.conf file. If the config_file option value has the form |/pathname, then /pathname must be an executable program and will be run with the standard set of filter options. It must write configuration option values to its STDOUT and exit with a 0 status.

• In order to protect system security, the lpd.conf (and the printcap) file should be read only.

• If the require_configfiles option is set in the compile time options, then the preceeding step must be successful, i.e. - there must be a configuration file or the program must execute and exit with a 0 status.

• If a printer or spooling operation is done, then the values in the printcap entry for the spooler are used to override the default and ifhp.conf file values.

    # comment
    # set option value to 1 or ON
    ab
    :ab
    # set option value to 0 or OFF
    ab@
    :ab
    # set option value to string
    str=name

    # Purpose: always print banner, ignore lpr -h option
    #   default ab@ (FLAG off)
    # Purpose: query accounting server when connected
    #   default achk@ (FLAG off)
    # Purpose: accounting at end (see also af, la, ar, as)
    #   default ae=jobend $H $n $P $k $b $t  (STRING)
    # Purpose: name of accounting file (see also la, ar)
    #   default af=acct  (STRING)
    
    # change:
    # --- we change the af value to none, i.e. - no accounting
    # --- file by default
    af=