Levenshtein like CGI handler 404 not found HTTP errors, proposing near paths
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Levenshtein like CGI handler for 404 Not found HTTP errors, proposing near paths.

Compile this single-file C++ program into a CGI. his is a CGI program (for web servers) to deal with 404 (Not found) errors using a modified Levenshtein distance to existing (static) files on the web sever.

The program is a self-contained C++ file lev404.cc, whose compilation command is near the end of the file.

Copyright 2013 - 2015 Basile Starynkevitch

GPLv3 license notice:

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 3 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, see http://www.gnu.org/licenses/.

installation instructions:

The last dozen lines of the lev404.cc file gives compilation instructions (e.g. for GNU/Linux/Debian); you should get a lev404.cgi file.

Then configure your web server to run that CGI for 404 Not-found errors. With Lighttpd, put lines like the following into your lighttpd.conf

$HTTP["host"] == "gcc-melt.org" {
  server.document-root = "/var/www/gcc-melt.org/"
  server.error-handler-404   = "/lev404.cgi"
  cgi.assign = ( ".cgi" => "" )

(the http://gcc-melt.org/ site should use this)