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Das Umschreiben von URLs während der Verwendung von mod_proxy_fcgi und PATH_INFO endet mit dem Fehler 404

Ich habe einen virtuellen Host auf Apache 2.4.25 mit PHP-FPM 7.1.4, der wie folgt mit mod_proxy_fcgi verbunden ist:

<VirtualHost *:80>
    ServerName example.com
    DocumentRoot/srv/www/example.com

    <Directory/srv/www/example.com>
        AllowOverride All
        Require all granted
    </Directory>

    SetEnvIfNoCase ^Authorization$ "(.+)" HTTP_AUTHORIZATION=$1
    <FilesMatch ".+\.ph(p[3457]?|t|tml)$">
        SetHandler "proxy:unix:/run/php/example.sock|fcgi://localhost"
    </FilesMatch>
</VirtualHost>

Die meisten Anwendungen funktionieren einwandfrei mit diesem Setup. Es gibt jedoch eine Anwendung, die PATH_INFO zum Extrahieren der Anforderung verwendet. Die Anwendung hat so etwas wie .htaccess:

RewriteEngine On

RewriteCond $1 ^index\.php
RewriteRule ^(.*)$ - [PT,L]

RewriteRule ^(.*)$ index.php/$1 [PT,L]

Einfach ausgedrückt, alles, was nicht index.php ist, sollte als Pfad an ihn übergeben werden. Die Besuchs-URL http://example.com/index.php/test funktioniert und zeigt wie erwartet [PATH_INFO] =>/test, der Besuch von http://example.com/test endet jedoch mit

AH01071: Got error 'Primary script unknown\n'

Die Einstellung LogLevel trace6 für mod_rewrite und mod_proxy_fcgi zeigt, dass die Umleitung ordnungsgemäß durchgeführt wird und die richtigen Pfade auch an PHP-FPM übergeben werden.

Spuren für/index.php/test:

[Sat Apr 29 09:40:41.156316 2017] [rewrite:trace3] [pid 3014:tid 140574363391744] mod_rewrite.c(477): [client xx.xx.xx.xx:32622] xx.xx.xx.xx - - [example.com/sid#7fda1635d360][rid#7fda141400a0/initial] [perdir/srv/www/example.com/] add path info postfix:/srv/www/example.com/index.php ->/srv/www/example.com/index.php/test
[Sat Apr 29 09:40:41.156334 2017] [rewrite:trace3] [pid 3014:tid 140574363391744] mod_rewrite.c(477): [client xx.xx.xx.xx:32622] xx.xx.xx.xx - - [example.com/sid#7fda1635d360][rid#7fda141400a0/initial] [perdir/srv/www/example.com/] strip per-dir prefix:/srv/www/example.com/index.php/test -> index.php/test
[Sat Apr 29 09:40:41.156348 2017] [rewrite:trace3] [pid 3014:tid 140574363391744] mod_rewrite.c(477): [client xx.xx.xx.xx:32622] xx.xx.xx.xx - - [example.com/sid#7fda1635d360][rid#7fda141400a0/initial] [perdir/srv/www/example.com/] applying pattern '^(.*)$' to uri 'index.php/test'
[Sat Apr 29 09:40:41.156352 2017] [rewrite:trace4] [pid 3014:tid 140574363391744] mod_rewrite.c(477): [client xx.xx.xx.xx:32622] xx.xx.xx.xx - - [example.com/sid#7fda1635d360][rid#7fda141400a0/initial] [perdir/srv/www/example.com/] RewriteCond: input='index.php/test' pattern='^index\\.php' => matched
[Sat Apr 29 09:40:41.156355 2017] [rewrite:trace2] [pid 3014:tid 140574363391744] mod_rewrite.c(477): [client xx.xx.xx.xx:32622] xx.xx.xx.xx - - [example.com/sid#7fda1635d360][rid#7fda141400a0/initial] [perdir/srv/www/example.com/] forcing '/srv/www/example.com/index.php' to get passed through to next API URI-to-filename handler
[Sat Apr 29 09:40:41.156358 2017] [rewrite:trace1] [pid 3014:tid 140574363391744] mod_rewrite.c(477): [client xx.xx.xx.xx:32622] xx.xx.xx.xx - - [example.com/sid#7fda1635d360][rid#7fda141400a0/initial] [perdir/srv/www/example.com/] initial URL equal rewritten URL:/srv/www/example.com/index.php [IGNORING REWRITE]
[Sat Apr 29 09:40:41.156368 2017] [proxy_fcgi:debug] [pid 3014:tid 140574363391744] mod_proxy_fcgi.c(913): [client xx.xx.xx.xx:32622] AH01076: url: fcgi://localhost/srv/www/example.com/index.php proxyname: (null) proxyport: 0
[Sat Apr 29 09:40:41.156371 2017] [proxy_fcgi:debug] [pid 3014:tid 140574363391744] mod_proxy_fcgi.c(920): [client xx.xx.xx.xx:32622] AH01078: serving URL fcgi://localhost/srv/www/example.com/index.php
[Sat Apr 29 09:40:41.156510 2017] [rewrite:trace3] [pid 3014:tid 140574363391744] mod_rewrite.c(477): [client xx.xx.xx.xx:32622] xx.xx.xx.xx - - [example.com/sid#7fda1635d360][rid#7fda1413e0a0/subreq] [perdir/srv/www/example.com/] strip per-dir prefix:/srv/www/example.com/test -> test
[Sat Apr 29 09:40:41.156519 2017] [rewrite:trace3] [pid 3014:tid 140574363391744] mod_rewrite.c(477): [client xx.xx.xx.xx:32622] xx.xx.xx.xx - - [example.com/sid#7fda1635d360][rid#7fda1413e0a0/subreq] [perdir/srv/www/example.com/] applying pattern '^(.*)$' to uri 'test'
[Sat Apr 29 09:40:41.156535 2017] [rewrite:trace4] [pid 3014:tid 140574363391744] mod_rewrite.c(477): [client xx.xx.xx.xx:32622] xx.xx.xx.xx - - [example.com/sid#7fda1635d360][rid#7fda1413e0a0/subreq] [perdir/srv/www/example.com/] RewriteCond: input='test' pattern='^index\\.php' => not-matched
[Sat Apr 29 09:40:41.156538 2017] [rewrite:trace3] [pid 3014:tid 140574363391744] mod_rewrite.c(477): [client xx.xx.xx.xx:32622] xx.xx.xx.xx - - [example.com/sid#7fda1635d360][rid#7fda1413e0a0/subreq] [perdir/srv/www/example.com/] strip per-dir prefix:/srv/www/example.com/test -> test
[Sat Apr 29 09:40:41.156541 2017] [rewrite:trace3] [pid 3014:tid 140574363391744] mod_rewrite.c(477): [client xx.xx.xx.xx:32622] xx.xx.xx.xx - - [example.com/sid#7fda1635d360][rid#7fda1413e0a0/subreq] [perdir/srv/www/example.com/] applying pattern '^(.*)$' to uri 'test'
[Sat Apr 29 09:40:41.156563 2017] [rewrite:trace2] [pid 3014:tid 140574363391744] mod_rewrite.c(477): [client xx.xx.xx.xx:32622] xx.xx.xx.xx - - [example.com/sid#7fda1635d360][rid#7fda1413e0a0/subreq] [perdir/srv/www/example.com/] rewrite 'test' -> 'index.php/test'
[Sat Apr 29 09:40:41.156567 2017] [rewrite:trace3] [pid 3014:tid 140574363391744] mod_rewrite.c(477): [client xx.xx.xx.xx:32622] xx.xx.xx.xx - - [example.com/sid#7fda1635d360][rid#7fda1413e0a0/subreq] [perdir/srv/www/example.com/] add per-dir prefix: index.php/test ->/srv/www/example.com/index.php/test
[Sat Apr 29 09:40:41.156571 2017] [rewrite:trace2] [pid 3014:tid 140574363391744] mod_rewrite.c(477): [client xx.xx.xx.xx:32622] xx.xx.xx.xx - - [example.com/sid#7fda1635d360][rid#7fda1413e0a0/subreq] [perdir/srv/www/example.com/] forcing '/srv/www/example.com/index.php/test' to get passed through to next API URI-to-filename handler
[Sat Apr 29 09:40:41.156575 2017] [rewrite:trace2] [pid 3014:tid 140574363391744] mod_rewrite.c(477): [client xx.xx.xx.xx:32622] xx.xx.xx.xx - - [example.com/sid#7fda1635d360][rid#7fda1413e0a0/subreq] [perdir/srv/www/example.com/] strip document_root prefix:/srv/www/example.com/index.php/test ->/index.php/test
[Sat Apr 29 09:40:41.156579 2017] [rewrite:trace1] [pid 3014:tid 140574363391744] mod_rewrite.c(477): [client xx.xx.xx.xx:32622] xx.xx.xx.xx - - [example.com/sid#7fda1635d360][rid#7fda1413e0a0/subreq] [perdir/srv/www/example.com/] internal redirect with/index.php/test [INTERNAL REDIRECT]
[Sat Apr 29 09:40:41.158640 2017] [proxy_fcgi:trace4] [pid 3014:tid 140574363391744] util_script.c(571): [client xx.xx.xx.xx:32622] Headers from script 'index.php':
[Sat Apr 29 09:40:41.158661 2017] [proxy_fcgi:trace4] [pid 3014:tid 140574363391744] util_script.c(572): [client xx.xx.xx.xx:32622]   Content-type: text/html; charset=UTF-8

Spuren für/test:

[Sat Apr 29 09:45:01.600510 2017] [rewrite:trace3] [pid 3013:tid 140574514460416] mod_rewrite.c(477): [client xx.xx.xx.xx:32639] xx.xx.xx.xx - - [example.com/sid#7fda1635d360][rid#7fda141b40a0/initial] [perdir/srv/www/example.com/] strip per-dir prefix:/srv/www/example.com/test -> test
[Sat Apr 29 09:45:01.600527 2017] [rewrite:trace3] [pid 3013:tid 140574514460416] mod_rewrite.c(477): [client xx.xx.xx.xx:32639] xx.xx.xx.xx - - [example.com/sid#7fda1635d360][rid#7fda141b40a0/initial] [perdir/srv/www/example.com/] applying pattern '^(.*)$' to uri 'test'
[Sat Apr 29 09:45:01.600533 2017] [rewrite:trace4] [pid 3013:tid 140574514460416] mod_rewrite.c(477): [client xx.xx.xx.xx:32639] xx.xx.xx.xx - - [example.com/sid#7fda1635d360][rid#7fda141b40a0/initial] [perdir/srv/www/example.com/] RewriteCond: input='test' pattern='^index\\.php' => not-matched
[Sat Apr 29 09:45:01.600535 2017] [rewrite:trace3] [pid 3013:tid 140574514460416] mod_rewrite.c(477): [client xx.xx.xx.xx:32639] xx.xx.xx.xx - - [example.com/sid#7fda1635d360][rid#7fda141b40a0/initial] [perdir/srv/www/example.com/] strip per-dir prefix:/srv/www/example.com/test -> test
[Sat Apr 29 09:45:01.600537 2017] [rewrite:trace3] [pid 3013:tid 140574514460416] mod_rewrite.c(477): [client xx.xx.xx.xx:32639] xx.xx.xx.xx - - [example.com/sid#7fda1635d360][rid#7fda141b40a0/initial] [perdir/srv/www/example.com/] applying pattern '^(.*)$' to uri 'test'
[Sat Apr 29 09:45:01.600540 2017] [rewrite:trace2] [pid 3013:tid 140574514460416] mod_rewrite.c(477): [client xx.xx.xx.xx:32639] xx.xx.xx.xx - - [example.com/sid#7fda1635d360][rid#7fda141b40a0/initial] [perdir/srv/www/example.com/] rewrite 'test' -> 'index.php/test'
[Sat Apr 29 09:45:01.600550 2017] [rewrite:trace3] [pid 3013:tid 140574514460416] mod_rewrite.c(477): [client xx.xx.xx.xx:32639] xx.xx.xx.xx - - [example.com/sid#7fda1635d360][rid#7fda141b40a0/initial] [perdir/srv/www/example.com/] add per-dir prefix: index.php/test ->/srv/www/example.com/index.php/test
[Sat Apr 29 09:45:01.600553 2017] [rewrite:trace2] [pid 3013:tid 140574514460416] mod_rewrite.c(477): [client xx.xx.xx.xx:32639] xx.xx.xx.xx - - [example.com/sid#7fda1635d360][rid#7fda141b40a0/initial] [perdir/srv/www/example.com/] forcing '/srv/www/example.com/index.php/test' to get passed through to next API URI-to-filename handler
[Sat Apr 29 09:45:01.600556 2017] [rewrite:trace2] [pid 3013:tid 140574514460416] mod_rewrite.c(477): [client xx.xx.xx.xx:32639] xx.xx.xx.xx - - [example.com/sid#7fda1635d360][rid#7fda141b40a0/initial] [perdir/srv/www/example.com/] strip document_root prefix:/srv/www/example.com/index.php/test ->/index.php/test
[Sat Apr 29 09:45:01.600560 2017] [rewrite:trace1] [pid 3013:tid 140574514460416] mod_rewrite.c(477): [client xx.xx.xx.xx:32639] xx.xx.xx.xx - - [example.com/sid#7fda1635d360][rid#7fda141b40a0/initial] [perdir/srv/www/example.com/] internal redirect with/index.php/test [INTERNAL REDIRECT]
[Sat Apr 29 09:45:01.600621 2017] [rewrite:trace3] [pid 3013:tid 140574514460416] mod_rewrite.c(477): [client xx.xx.xx.xx:32639] xx.xx.xx.xx - - [example.com/sid#7fda1635d360][rid#7fda141a1a78/initial/redir#1] [perdir/srv/www/example.com/] add path info postfix:/srv/www/example.com/index.php ->/srv/www/example.com/index.php/test
[Sat Apr 29 09:45:01.600626 2017] [rewrite:trace3] [pid 3013:tid 140574514460416] mod_rewrite.c(477): [client xx.xx.xx.xx:32639] xx.xx.xx.xx - - [example.com/sid#7fda1635d360][rid#7fda141a1a78/initial/redir#1] [perdir/srv/www/example.com/] strip per-dir prefix:/srv/www/example.com/index.php/test -> index.php/test
[Sat Apr 29 09:45:01.600628 2017] [rewrite:trace3] [pid 3013:tid 140574514460416] mod_rewrite.c(477): [client xx.xx.xx.xx:32639] xx.xx.xx.xx - - [example.com/sid#7fda1635d360][rid#7fda141a1a78/initial/redir#1] [perdir/srv/www/example.com/] applying pattern '^(.*)$' to uri 'index.php/test'
[Sat Apr 29 09:45:01.600643 2017] [rewrite:trace4] [pid 3013:tid 140574514460416] mod_rewrite.c(477): [client xx.xx.xx.xx:32639] xx.xx.xx.xx - - [example.com/sid#7fda1635d360][rid#7fda141a1a78/initial/redir#1] [perdir/srv/www/example.com/] RewriteCond: input='index.php/test' pattern='^index\\.php' => matched
[Sat Apr 29 09:45:01.600646 2017] [rewrite:trace2] [pid 3013:tid 140574514460416] mod_rewrite.c(477): [client xx.xx.xx.xx:32639] xx.xx.xx.xx - - [example.com/sid#7fda1635d360][rid#7fda141a1a78/initial/redir#1] [perdir/srv/www/example.com/] forcing '/srv/www/example.com/index.php' to get passed through to next API URI-to-filename handler
[Sat Apr 29 09:45:01.600648 2017] [rewrite:trace1] [pid 3013:tid 140574514460416] mod_rewrite.c(477): [client xx.xx.xx.xx:32639] xx.xx.xx.xx - - [example.com/sid#7fda1635d360][rid#7fda141a1a78/initial/redir#1] [perdir/srv/www/example.com/] initial URL equal rewritten URL:/srv/www/example.com/index.php [IGNORING REWRITE]
[Sat Apr 29 09:45:01.600664 2017] [proxy_fcgi:debug] [pid 3013:tid 140574514460416] mod_proxy_fcgi.c(913): [client xx.xx.xx.xx:32639] AH01076: url: fcgi://localhost/srv/www/example.com/index.php proxyname: (null) proxyport: 0
[Sat Apr 29 09:45:01.600666 2017] [proxy_fcgi:debug] [pid 3013:tid 140574514460416] mod_proxy_fcgi.c(920): [client xx.xx.xx.xx:32639] AH01078: serving URL fcgi://localhost/srv/www/example.com/index.php
[Sat Apr 29 09:45:01.600790 2017] [rewrite:trace3] [pid 3013:tid 140574514460416] mod_rewrite.c(477): [client xx.xx.xx.xx:32639] xx.xx.xx.xx - - [example.com/sid#7fda1635d360][rid#7fda141a30a0/subreq] [perdir/srv/www/example.com/] strip per-dir prefix:/srv/www/example.com/test -> test
[Sat Apr 29 09:45:01.600795 2017] [rewrite:trace3] [pid 3013:tid 140574514460416] mod_rewrite.c(477): [client xx.xx.xx.xx:32639] xx.xx.xx.xx - - [example.com/sid#7fda1635d360][rid#7fda141a30a0/subreq] [perdir/srv/www/example.com/] applying pattern '^(.*)$' to uri 'test'
[Sat Apr 29 09:45:01.600799 2017] [rewrite:trace4] [pid 3013:tid 140574514460416] mod_rewrite.c(477): [client xx.xx.xx.xx:32639] xx.xx.xx.xx - - [example.com/sid#7fda1635d360][rid#7fda141a30a0/subreq] [perdir/srv/www/example.com/] RewriteCond: input='test' pattern='^index\\.php' => not-matched
[Sat Apr 29 09:45:01.600801 2017] [rewrite:trace3] [pid 3013:tid 140574514460416] mod_rewrite.c(477): [client xx.xx.xx.xx:32639] xx.xx.xx.xx - - [example.com/sid#7fda1635d360][rid#7fda141a30a0/subreq] [perdir/srv/www/example.com/] strip per-dir prefix:/srv/www/example.com/test -> test
[Sat Apr 29 09:45:01.600803 2017] [rewrite:trace3] [pid 3013:tid 140574514460416] mod_rewrite.c(477): [client xx.xx.xx.xx:32639] xx.xx.xx.xx - - [example.com/sid#7fda1635d360][rid#7fda141a30a0/subreq] [perdir/srv/www/example.com/] applying pattern '^(.*)$' to uri 'test'
[Sat Apr 29 09:45:01.600805 2017] [rewrite:trace2] [pid 3013:tid 140574514460416] mod_rewrite.c(477): [client xx.xx.xx.xx:32639] xx.xx.xx.xx - - [example.com/sid#7fda1635d360][rid#7fda141a30a0/subreq] [perdir/srv/www/example.com/] rewrite 'test' -> 'index.php/test'
[Sat Apr 29 09:45:01.600807 2017] [rewrite:trace3] [pid 3013:tid 140574514460416] mod_rewrite.c(477): [client xx.xx.xx.xx:32639] xx.xx.xx.xx - - [example.com/sid#7fda1635d360][rid#7fda141a30a0/subreq] [perdir/srv/www/example.com/] add per-dir prefix: index.php/test ->/srv/www/example.com/index.php/test
[Sat Apr 29 09:45:01.600810 2017] [rewrite:trace2] [pid 3013:tid 140574514460416] mod_rewrite.c(477): [client xx.xx.xx.xx:32639] xx.xx.xx.xx - - [example.com/sid#7fda1635d360][rid#7fda141a30a0/subreq] [perdir/srv/www/example.com/] forcing '/srv/www/example.com/index.php/test' to get passed through to next API URI-to-filename handler
[Sat Apr 29 09:45:01.600813 2017] [rewrite:trace2] [pid 3013:tid 140574514460416] mod_rewrite.c(477): [client xx.xx.xx.xx:32639] xx.xx.xx.xx - - [example.com/sid#7fda1635d360][rid#7fda141a30a0/subreq] [perdir/srv/www/example.com/] strip document_root prefix:/srv/www/example.com/index.php/test ->/index.php/test
[Sat Apr 29 09:45:01.600815 2017] [rewrite:trace1] [pid 3013:tid 140574514460416] mod_rewrite.c(477): [client xx.xx.xx.xx:32639] xx.xx.xx.xx - - [example.com/sid#7fda1635d360][rid#7fda141a30a0/subreq] [perdir/srv/www/example.com/] internal redirect with/index.php/test [INTERNAL REDIRECT]
[Sat Apr 29 09:45:01.602797 2017] [proxy_fcgi:error] [pid 3013:tid 140574514460416] [client xx.xx.xx.xx:32639] AH01071: Got error 'Primary script unknown\n'
[Sat Apr 29 09:45:01.602833 2017] [proxy_fcgi:trace4] [pid 3013:tid 140574514460416] util_script.c(571): [client xx.xx.xx.xx:32639] Headers from script 'index.php':
[Sat Apr 29 09:45:01.602839 2017] [proxy_fcgi:trace4] [pid 3013:tid 140574514460416] util_script.c(572): [client xx.xx.xx.xx:32639]   Status: 404 Not Found
[Sat Apr 29 09:45:01.602842 2017] [proxy_fcgi:trace4] [pid 3013:tid 140574514460416] util_script.c(572): [client xx.xx.xx.xx:32639]   Content-type: text/html; charset=UTF-8

Wie kann der Apache die URLs ordnungsgemäß umschreiben und gleichzeitig PATH_INFO übergeben?

Hinweis: Diese Frage könnte ähnlich sein wie Apache 2.4 + PHP-FPM + ProxyPassMatch, aber in meinem Fall verwende ich bereits SetHandler. Das Problem liegt im PATH_INFO-Teil, den die Antworten dort scheinbar nicht lösen.

antworten

Nach einigen Tagen des Kampfes habe ich CGI-Header, die zwischen Apache und PHP-FPM gesendet wurden, eingefangen und untersucht und dasselbe auch mit verschiedenen Versionen dieser Komponenten getestet. Es stellt sich heraus, dass verschiedene Versionen von Apache die Variable SCRIPT_FILENAME unterschiedlich setzen, was in PHP-FPM nicht berücksichtigt wird.
Apache 2.4.18 (Standard in Ubuntu 16.04, den ich verwende) füllt die Variable wie folgt auf:

SCRIPT_FILENAME proxy:fcgi://localhost/srv/www/index.php

Während Apache 2.4.25 setzt:

SCRIPT_FILENAME/srv/www/index.php

Die Apache-Dokumentation von mod_proxy_fcgi erwähnt eine Anweisung ProxyFCGIBackendType, die seit Apache 2.4.26 verfügbar ist (noch nicht veröffentlicht am 02.05.2017), die standardmäßig auf "FPM" gesetzt ist. In der Beschreibung gibt es einen Hinweis:

One example of values that change based on the setting of this directive is SCRIPT_FILENAME. When using mod_proxy_fcgi historically, SCRIPT_FILENAME was prefixed with the string "proxy:fcgi://". This variable is what some generic FastCGI applications would read as their script input, but PHP-FPM would strip the prefix then remember it was talking to Apache. In 2.4.21 through 2.4.25, this prefix was automatically stripped by the server, breaking the ability of PHP-FPM to detect and interoperate with Apache in some scenarios.

Scheint habe ich zufälligerweise "irgendein Szenario" gefunden. Antwort auf meine eigene Frage ist dann: Benutze Apache 2.4.21 bis 2.4.25 nicht, da sie einen Bug enthalten. Verwenden Sie eine niedrigere Version oder warten Sie auf neuere, wo der Fehler behoben ist.