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Diffstat (limited to 'lib/gorg/cgi.rb')
| -rw-r--r-- | lib/gorg/cgi.rb | 198 |
1 files changed, 198 insertions, 0 deletions
diff --git a/lib/gorg/cgi.rb b/lib/gorg/cgi.rb new file mode 100644 index 0000000..dfe8451 --- /dev/null +++ b/lib/gorg/cgi.rb @@ -0,0 +1,198 @@ +### Copyright 2004, Xavier Neys (neysx@gentoo.org) +# # +# # This file is part of gorg. +# # +# # gorg 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 2 of the License, or +# # (at your option) any later version. +# # +# # gorg 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 Foobar; if not, write to the Free Software +### Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + +# Process CGI request, either from cgi or fcgi + +require "gorg/base" + +module Gorg + def do_Filter(tmout=30, params=nil) + # Read STDIN, transform, spit result out + timeout(tmout) { + # Give it a few seconds to read it all, then timeout + xml = STDIN.read + err, body, filelist = xproc(xml, params, false, true) + if err["xmlErrLevel"] > 0 then + STDERR.puts("#{err.collect{|e|e.join(':')}.join("\n")}") + elsif (body||"").length < 1 then + # Some transforms can yield empty content + STDERR.puts("Empty body") + else + STDOUT.puts(body) + end + } + rescue Timeout::Error, StandardError =>ex + # Just spew it out + STDERR.puts(ex) + end + + def do_CGI(cgi) + header = Hash.new + if cgi.path_info.nil? || cgi.env_table["REQUEST_URI"].index("/#{File.basename($0)}/") + # Sorry, I'm not supposed to be called directly, e.g. /cgi-bin/gorg.cgi/bullshit_from_smartass_skriptbaby + raise Gorg::Status::Forbidden + elsif cgi.request_method == "OPTIONS" + cgi.out('Allow'=>'GET,HEAD'){""} + elsif cgi.request_method == "HEAD" or cgi.request_method == "GET" + # lighttp is b0rked despite what they say :( + # PATH_INFO == "" and PATH_TRANSLATED == nil + if cgi.path_info.length > 0 then + # Apache, or any web browser that works + path_info = cgi.path_info + else + # lighttp, use SCRIPT_NAME instead + path_info = cgi.env_table['SCRIPT_NAME'] + end + query = Hash.new + cgi.params.each{ |p, v| query[p] = v.to_s} + # Get DOCUMENT_ROOT from environment + $Config["root"] = cgi.env_table['DOCUMENT_ROOT'] + + xml_file = cgi.path_translated||(cgi.env_table['DOCUMENT_ROOT']+cgi.env_table['SCRIPT_NAME']) + if not FileTest.file?(xml_file) + # Should have been checked by apache, check anyway + raise Gorg::Status::NotFound + else + # Process request + # Parse If-None-Match and If-Modified-Since request header fields if any + inm=ims=nil + begin + inm = split_header_etags(cgi.env_table['HTTP_IF_NONE_MATCH']) if cgi.env_table['HTTP_IF_NONE_MATCH'] + ims = Time.parse(cgi.env_table['HTTP_IF_MODIFIED_SINCE']) if cgi.env_table['HTTP_IF_MODIFIED_SINCE'] + ims = nil if ims > Time.now # Dates later than current must be ignored + rescue + # Just ignore ill-formated data + nil + end + if $Config['passthru'] && query["passthru"] && query["passthru"] != "0" then + # passthru allowed by config and requested by visitor, return file as text/plain + debug("Passthru granted for #{path_info}") + mstat = File.stat(xml_file) + raise Gorg::Status::NotModified.new(mstat) if notModified?(mstat, inm, ims) + body = IO.read(xml_file) + header['type'] = 'text/plain' + # If client accepts gzip encoding and we support it, return gzipped file + if $Config["zipLevel"] > 0 and ( cgi.accept_encoding =~ /gzip(\s*;\s*q=([0-9\.]+))?/ and ($2||"1") != "0" ) then + body = gzip(body, $Config["zipLevel"]) + header['Content-Encoding'] = "gzip" + header['Vary'] = "Accept-Encoding" + end + else + # Get cookies and add them to the parameters + if $Config["acceptCookies"] then + # Add cookies to our params + query.merge!(cookies_to_params(cgi.cookies)) + end + + if $Config["httphost"] then + # Add HTTP_HOST to stylesheet params + query["httphost"] = if $Config["httphost"][0] == '*' then + cgi.host||"" + elsif $Config["httphost"].include?('*') then + $Config["httphost"][0] + elsif $Config["httphost"].include?(cgi.host) then + $Config["httphost"][0] + else + cgi.host||"" + end + end + + xml_query = query.dup # xml_query==params passed to the XSL, query=>metadata in cache + if $Config["linkParam"] then + xml_query[$Config["linkParam"]] = path_info + end + + bodyZ = nil # Compressed version + body, mstat, extrameta = Cache.hit(path_info, query, inm, ims) + if body.nil? then + # Cache miss, process file and cache result + err, body, filelist, extrameta = xproc(xml_file, xml_query, true) + if err["xmlErrLevel"] > 0 then + raise "#{err.collect{|e|e.join(':')}.join('<br/>')}" + elsif (body||"").length < 1 then + # Some transforms can yield empty content (handbook?part=9&chap=99) + # Consider this a 404 + raise Gorg::Status::NotFound + else + # Cache the output if all was OK + mstat, bodyZ = Cache.store(body, path_info, query, filelist, extrameta) + debug("Cached #{path_info}, mstat=#{mstat.inspect}") + # Check inm & ims again as they might match if another web node had + # previously delivered the same data + if notModified?(mstat, inm, ims) and extrameta.join !~ /set-cookie/i + raise Gorg::Status::NotModified.new(mstat) + end + end + else + if $Config["zipLevel"] > 0 then + bodyZ = body + body = nil + end + end + # If client accepts gzip encoding and we support it, return gzipped file + if bodyZ and $Config["zipLevel"] > 0 and ( cgi.accept_encoding =~ /gzip(\s*;\s*q=([0-9\.]+))?/ and ($2||"1") != "0" ) then + body = bodyZ + header['Content-Encoding'] = "gzip" + header['Vary'] = "Accept-Encoding" + else + unless body then + # We need to unzip bodyZ into body, i.e. we cached zipped data but client does not support gzip + body = gunzip(bodyZ) + end + end + # Add cookies to http header + cookies = makeCookies(extrameta) + if cookies then + header['cookie'] = cookies + end + # Add Content-Type to header + ct = contentType(extrameta) + if ct then + # Turn application/xhtml+xml into text/html if browser does not accept it + if cgi.accept !~ /application\/xhtml\+xml/ and ct =~ /application\/xhtml\+xml(.*)$/ then + header['type'] = "text/html#{$1}" + else + header['type'] = ct + end + else + header['type'] = 'text/plain' + end + end + # Add ETag & Last-Modified http headers + # NB: it's simply mstat(file.xml) when passthru=1 + if mstat then + header['ETag'] = makeETag(mstat) + header['Last-Modified'] = mstat.mtime.httpdate + end + end + cgi.out(header){body} + else # Not a HEAD or GET + raise Gorg::Status::NotAllowed + end + rescue => ex + if ex.respond_to?(:errCode) then + # One of ours (Gorg::Status::HTTPStatus) + cgi.out(ex.header){ex.html} + else + # Some ruby exceptions occurred, make it a 500 + syserr = Gorg::Status::SysError.new + cgi.out('Status'=>syserr.errSts){syserr.html(ex)} + error("do_CGI() failed: #{$!}") + end + end +end |