lighttpd 1.4.x https://www.lighttpd.net/
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reverts part of commit:dbdab5db which swapped REQUEST_URI, REDIRECT_URI x-ref: "mediawiki redirect loop if REQUEST_URI not orig req in 1.4.40" https://redmine.lighttpd.net/issues/2738 Explanation: REQUEST_URI and REDIRECT_URI are not part of CGI standard environment. The reason for their existence is that PATH_INFO in CGI environment may be different from the path in the current request. The main reason for this potential difference is that the URI path is normalized to a path in the filesystem and tested against the filesystem to determine which part is SCRIPT_NAME and which part is PATH_INFO. In case-insensitive filesystems, the URI might be lowercased before testing against the filesystem, leading to loss of case-sensitive submission in any resulting PATH_INFO. Also, duplicated slashes "///" and directory references "/." and "/.." are removed, including prior path component in the case of "/..". This might be undesirable when the information after the SCRIPT_NAME is virtual information and there target script needs the virtual path preserved as-is. In that case, the target script can re-parse REQUEST_URI (or REDIRECT_URI, as appropriate) to obtain the unmodified information from the URI. con->request.uri is equivalent to con->request.orig_uri unless the request has been internally rewritten (e.g. by mod_rewrite, mod_magnet, others), in which case con->request.orig_uri is the request made by the client, and con->request.uri is the current URI being processed. Historical REQUEST_URI (environment variable) lighttpd inconsistencies - mod_cml set REQUEST_URI to con->request.orig_uri - mod_cgi set REQUEST_URI to con->request.orig_uri - mod_fastcgi set REQUEST_URI to con->request.orig_uri - mod_scgi set REQUEST_URI to con->request.orig_uri - mod_ssi set REQUEST_URI to current con->request.uri - mod_magnet set MAGNET_ENV_REQUEST_URI to current con->request.uri and MAGNET_ENV_REQUEST_ORIG_URI to con->request.orig_uri Historical REDIRECT_URI (environment variable) previously set only in mod_fastcgi and mod_scgi, and set to con->request.uri Since lighttpd 1.4.40 provides REDIRECT_URI with con->request.orig_uri, changes were made to REQUEST_URI for consistency, with the hope that there would be little impact to existing configurations since the request uri and original request uri are the same unless there has been an internal redirect. It turns out that various PHP frameworks use REQUEST_URI and require that it be the original URI requested by client. Therefore, this change is being reverted, and lighttpd will set REQUEST_URI to con->request.orig_uri in mod_cgi, mod_fastcgi, mod_scgi as was done in lighttpd 1.4.39 and earlier. Similarly, REDIRECT_URI also has the prior behavior in mod_fastcgi and mod_scgi, and added to mod_cgi. A future release of lighttpd might change mod_ssi to be consistent with the other modules in setting REQUEST_URI to con->request.orig_uri and to add REDIRECT_URI, when an internal redirect has occurred.
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