NAME

       c-icap - ICAP filtering server

SYNOPSIS

       c-icap [ -V ] [ -VV ] [ -f  config-file ] [ -N ] [ -d  debug-level ] [ -D ]

DESCRIPTION

       c-icap  is  an  implementation  of an ICAP server. It can be used with HTTP proxies that support the ICAP
       protocol. Most of the comercial HTTP proxies must support ICAP pcotocol.

OPTIONS

       -V     Print version

       -VV    Print build informations

       -f config-file
              Specify the configuration file

       -N     Do not run as daemon

       -d level
              Specify the debug level

       -D     Print debug info to stdout

FILES

       /etc/c-icap/c-icap.conf
              The main configuration file
       /etc/c-icap/c-icap.magic
               In this file defined the types of files and the groups of file types.
       /var/run/c-icap.pid
              By default c-icap writes its pid in this file. The path of this file can changed using the PidFile
              configuration parameter in the c-icap.conf file
       /var/run/c-icap.ctl
              The commands socket. This file used to send commands to the icap server  from  command  line.  For
              information about implemented commands look below in the "Implemented commands" sub-section

NOTES

   Implemented commands
       Currently the following commands are implemented:

       stop
              The c-icap will shutdown

       reconfigure
              The  service  will  reread the config file without the need to stop and restart the c-icap server.
              The services will be reinitialized

       relog
              This command causes c-icap to close and reopen the  log  files.   This  is  very  useful  for  log
              rotation.

       Services and modules can define their own commands.

       Examples:

       To reconfigure c-icap:
                    echo -n "reconfigure" > /var/run/c-icap.ctl

       To rotate access log:
                    mv /var/log/c-icap/access.log /var/log/c-icap/access.log.1
                    echo -n "relog" > /var/run/c-icap.ctl

   Lookup tables
       Lookup  tables  are simple read-only databases.  A lookup table can defined in c-icap.conf file using the
       form:
            type:path
       where the type is the type of lookup table and path is the extra information required to  use  the  table
       (e.g. file path). Currently the following lookup table types defined internally by c-icap:

       file   Simple text file databases. The database records are stored in text files in the form:
               key[: value1, value2 ...]

              example path definition:
                     file:/path/to/the/file.txt

       hash   Similar to file lookup tables but c-icap uses fast hashes for searching.

              example path definition:
                     hash:/path/to/the/file.txt

       regex  Similar  to the file lookup tables but the keys are regular expressions in the form /regex/flags .
              For possible flags values please read 'Regex expressions' paragraph in this manual.

              example regex lookup table data:
                          /^[a-m].*/i: group1
                          /^[n-z].*/i: group2

       example path definition:
              regex:/path/to/the/file.txt

   Regex expressions
       The c-icap regex expressions have the form /regex_definition/flags where "flags" is one or more  letters,
       its of them express a flag.

       Common flags
              g This flag forces the score multiplied by the number of regex
                expression matches. For example if the expression matches 5
                times and the devined score value is 10 then the final score
                will be 50.
              i Do caseless matching
              m Match-any-character operators don't match a newline
                and ^$ operators does not match newlines within data

       If the module compiled using the pcre library the following flags can be used
              s (PCRE_DOTALL)  matches anything including NL
              x (PCRE_EXTENDED) Ignore whitespace and # comments
              A (PCRE_ANCHORED) Force pattern anchoring
              D (PCRE_DOLLAR_ENDONLY) $ not to match newline at end
              U (PCRE_UNGREEDY) Invert greediness of quantifiers
              X (PCRE_EXTRA) PCRE extra features
              u (PCRE_UTF8) Run in UTF-8 mode

   Runtime information
       Someone  can retrieve runtime information using the info service. The information includes bytes received
       and transmited, active services, information about service usage and many other. The information provided
       in HTML and text format.

       Example:

       Retrieve runtime information from command line:
              c-icap-client -i localhost -s "info?view=text" -req "a_url"

SEE ALSO

       c-icap-client(8) c-icap-stretch(8) c-icap-config(8) c-icap-libicapapi-config(8) c-icap-mkbdb(8)

BUGS

       Many...

AUTHOR

       Tsantilas Christos

                                                  c_icap 0.5.10                                        c-icap(8)