URL auf Querystring abbilden (solved) (Perl/CGI)

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URL auf Querystring abbilden [solved]

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GwenDragon

2019-10-01 12:56
User since
2005-01-17
14785 articles
Admin1
Ich versuche mittels internem Apache-Rewrite eine URL so umzusetzen, dass das empfangende Skript eine Query bekommt.

.htaccess
Code: (dl )

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RewriteEngine On RewriteBase / RewriteRule ^ttt/tags$ /cgi-bin/t1.pl [L] RewriteRule ^ttt/tags/(.*) /cgi-bin/t1.pl?-tags=$1 [L]
Mein Testscript:
Code (perl): (dl )

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#!/usr/bin/perl use 5.010; use strict; use warnings; print "Content-Type: text/plain\n\n"; say qq{ENV REQUEST_URI = $ENV{REQUEST_URI}}; say qq{ENV QUERY_STRING = $ENV{QUERY_STRING}}; use CGI::Simple; my $c = CGI::Simple->new; say "\nCGI-Modul:"; say $c->query_string(); say $c->param('-tags');
Aufruf von /ttt/tags?-tags=test%26More,A,C%26A ergibt:
Code: (dl )

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ENV REQUEST_URI = /ttt/tags?-tags=test%26More,A,C%26A ENV QUERY_STRING = -tags=test%26More,A,C%26A CGI-Modul: -tags=test%26More%2CA%2CC%26A test&More,A,C&A
Wie erwünscht ist der Parameter -tags ok.

Aufruf von /ttt/tags/test%26More,A,C%26A egribt:
Code: (dl )

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ENV REQUEST_URI = /ttt/tags/test%26More,A,C%26A ENV QUERY_STRING = -tags=test&More,A,C&A CGI-Modul: -tags=test&More%2CA%2CC=&A= test
Irgendeine Idee was das Modul veranlasst, das erste %26 fälschlich zu ersetzen?
Last edited: 2019-10-02 11:43:24 +0200 (CEST)
die Drachin Gwen

Meine Perl-Artikel · perldev – verschiedene Perl-Versionen unter Windows starten
- GwenDragon
  
  2019-10-01 14:52
  
  User since
  2005-01-17
  14785 articles
  Admin1
  
  Oh, was war ich da verschnarcht.
  
  Einfach [B] mit nutzen und der Querystring wird vor veränderung bei einem Rewrite geschützt.
  
  https://httpd.apache.org/docs/2.2/rewrite/flags.html#flag_b
  B (escape backreferences)
  
  The [B] flag instructs RewriteRule to escape non-alphanumeric characters before applying the transformation.
  
  mod_rewrite has to unescape URLs before mapping them, so backreferences will be unescaped at the time they are applied. Using the B flag, non-alphanumeric characters in backreferences will be escaped. For example, consider the rule:
  
  RewriteRule ^search/(.*)$ /search.php?term=$1
  
  Given a search term of 'x & y/z', a browser will encode it as 'x%20%26%20y%2Fz', making the request 'search/x%20%26%20y%2Fz'. Without the B flag, this rewrite rule will map to 'search.php?term=x & y/z', which isn't a valid URL, and so would be encoded as search.php?term=x%20&y%2Fz=, which is not what was intended.
  
  With the B flag set on this same rule, the parameters are re-encoded before being passed on to the output URL, resulting in a correct mapping to /search.php?term=x%20%26%20y%2Fz.
  
  Note that you may also need to set AllowEncodedSlashes to On to get this particular example to work, as httpd does not allow encoded slashes in URLs, and returns a 404 if it sees one.
  
  This escaping is particularly necessary in a proxy situation, when the backend may break if presented with an unescaped URL.
  
  Damit muss das Rewrite also so sein:
  RewriteRule ^ttt/tags/(.*) /cgi-bin/t1.pl?-tags=$1 [B,L]
  
  Wirk vielleicht auch mal anderen helfen, die verschnarcht, ohne genügend Kaffee arbeiteten.
  Last edited: 2019-10-01 14:54:02 +0200 (CEST)
  die Drachin Gwen
  
  Meine Perl-Artikel · perldev – verschiedene Perl-Versionen unter Windows starten

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