<If> 语句破坏了 Rewrite* 规则答案

【问题标题】：<If> statement breaks Rewrite* rules<If> 语句破坏了 Rewrite* 规则
【发布时间】：2019-03-05 22:07:58
【问题描述】：

我在 Apache/2.4.34 中使用标准的 wordpress htaccess 规则。如果我添加 <If> 语句，它会刹车重写。

# DEBUG is set to TRUE
<If "-T env('DEBUG')">
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]

# add a trailing slash to /wp-admin
RewriteRule ^wp-admin$ wp-admin/ [R=301,L]

RewriteCond %{REQUEST_FILENAME} -f [OR]
RewriteCond %{REQUEST_FILENAME} -d
RewriteRule ^ - [L]
RewriteRule ^(wp-(content|admin|includes).*) $1 [L]
RewriteRule ^(.*\.php)$ $1 [L]
RewriteRule . index.php [L]
</If>

除/ 之外的所有页面都返回：错误请求您的浏览器发送了此服务器无法理解的请求。

blog.local 172.20.0.1 - - [30/Sep/2018:17:07:58 +0000] "GET /2018/09/19/popular/ HTTP/1.1" 400 226 "-" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.100 Safari/537.36"
[Sun Sep 30 17:07:58.202467 2018] [rewrite:trace3] [pid 7:tid 140686203255528] mod_rewrite.c(482): [client 172.20.0.1:56856] 172.20.0.1 - - [blog.local/sid#55cd2e1aec50][rid#55cd2e246a80/initial] [perdir *If/] add path info postfix: /var/www/html/web/2018 -> /var/www/html/web/2018/09/19/popular/
[Sun Sep 30 17:07:58.202511 2018] [rewrite:trace3] [pid 7:tid 140686203255528] mod_rewrite.c(482): [client 172.20.0.1:56856] 172.20.0.1 - - [blog.local/sid#55cd2e1aec50][rid#55cd2e246a80/initial] [perdir *If/] applying pattern '^index\\.php$' to uri '/var/www/html/web/2018/09/19/popular/'
[Sun Sep 30 17:07:58.202529 2018] [rewrite:trace3] [pid 7:tid 140686203255528] mod_rewrite.c(482): [client 172.20.0.1:56856] 172.20.0.1 - - [blog.local/sid#55cd2e1aec50][rid#55cd2e246a80/initial] [perdir *If/] add path info postfix: /var/www/html/web/2018 -> /var/www/html/web/2018/09/19/popular/
[Sun Sep 30 17:07:58.202543 2018] [rewrite:trace3] [pid 7:tid 140686203255528] mod_rewrite.c(482): [client 172.20.0.1:56856] 172.20.0.1 - - [blog.local/sid#55cd2e1aec50][rid#55cd2e246a80/initial] [perdir *If/] applying pattern '^wp-admin$' to uri '/var/www/html/web/2018/09/19/popular/'
[Sun Sep 30 17:07:58.202557 2018] [rewrite:trace3] [pid 7:tid 140686203255528] mod_rewrite.c(482): [client 172.20.0.1:56856] 172.20.0.1 - - [blog.local/sid#55cd2e1aec50][rid#55cd2e246a80/initial] [perdir *If/] add path info postfix: /var/www/html/web/2018 -> /var/www/html/web/2018/09/19/popular/
[Sun Sep 30 17:07:58.202570 2018] [rewrite:trace3] [pid 7:tid 140686203255528] mod_rewrite.c(482): [client 172.20.0.1:56856] 172.20.0.1 - - [blog.local/sid#55cd2e1aec50][rid#55cd2e246a80/initial] [perdir *If/] applying pattern '^' to uri '/var/www/html/web/2018/09/19/popular/'
[Sun Sep 30 17:07:58.202619 2018] [rewrite:trace4] [pid 7:tid 140686203255528] mod_rewrite.c(482): [client 172.20.0.1:56856] 172.20.0.1 - - [blog.local/sid#55cd2e1aec50][rid#55cd2e246a80/initial] [perdir *If/] RewriteCond: input='/var/www/html/web/2018' pattern='-f' => not-matched
[Sun Sep 30 17:07:58.202638 2018] [rewrite:trace4] [pid 7:tid 140686203255528] mod_rewrite.c(482): [client 172.20.0.1:56856] 172.20.0.1 - - [blog.local/sid#55cd2e1aec50][rid#55cd2e246a80/initial] [perdir *If/] RewriteCond: input='/var/www/html/web/2018' pattern='-d' => not-matched
[Sun Sep 30 17:07:58.202653 2018] [rewrite:trace3] [pid 7:tid 140686203255528] mod_rewrite.c(482): [client 172.20.0.1:56856] 172.20.0.1 - - [blog.local/sid#55cd2e1aec50][rid#55cd2e246a80/initial] [perdir *If/] add path info postfix: /var/www/html/web/2018 -> /var/www/html/web/2018/09/19/popular/
[Sun Sep 30 17:07:58.202666 2018] [rewrite:trace3] [pid 7:tid 140686203255528] mod_rewrite.c(482): [client 172.20.0.1:56856] 172.20.0.1 - - [blog.local/sid#55cd2e1aec50][rid#55cd2e246a80/initial] [perdir *If/] applying pattern '.' to uri '/var/www/html/web/2018/09/19/popular/'
[Sun Sep 30 17:07:58.202681 2018] [rewrite:trace2] [pid 7:tid 140686203255528] mod_rewrite.c(482): [client 172.20.0.1:56856] 172.20.0.1 - - [blog.local/sid#55cd2e1aec50][rid#55cd2e246a80/initial] [perdir *If/] rewrite '/var/www/html/web/2018/09/19/popular/' -> 'index.php'
[Sun Sep 30 17:07:58.202693 2018] [rewrite:trace3] [pid 7:tid 140686203255528] mod_rewrite.c(482): [client 172.20.0.1:56856] 172.20.0.1 - - [blog.local/sid#55cd2e1aec50][rid#55cd2e246a80/initial] [perdir *If/] add per-dir prefix: index.php -> *If/index.php

最后一条消息完全奇怪：add per-dir prefix: index.php -> *If/index.php

怎么了？

【问题讨论】：

标签： wordpress apache mod-rewrite

【解决方案1】：

我遇到了与这些htaccessrules 类似的案例：

<If "%{REQUEST_URI} =~ m#^/resources/data/character/[0-9]{1,10}/(avatar|refsheet)\.png$#">
    # ... Other stuff here ...
    RewriteCond %{REQUEST_FILENAME} !-f
    RewriteRule ^ resources/generic/default-refsheet.png
</If>

在这种情况下，当最初请求的文件不存在时（并且当它与<If> 中的正则表达式匹配时），请求被重写到相对路径resources/generic/default-refsheet.png，导致哑正在添加*If/ 前缀。

Apache 使用的目录前缀*If/ 似乎是一个取悦者，因为总是先应用<If> 的内容，然后才能计算实际的目录前缀。

在这种情况下，我发现没有办法让重写的 URL 保持相对，所以我使用了“绝对”（绝对在引号中，因为它实际上仍然相对于虚拟主机的 DocumentRoot，但不相对于其中htaccess 是）。因此将规则更改为/resources/generic/default-refsheet.png（注意/ 首先）：

<If "%{REQUEST_URI} =~ m#^/resources/data/character/[0-9]{1,10}/(avatar|refsheet)\.png$#">
    # ...
    RewriteCond %{REQUEST_FILENAME} !-f
    RewriteRule ^ /resources/generic/default-refsheet.png
</If>

在这种情况下，重写的 URL 不会以哑 *If/ dir 前缀作为前缀。

因此，对于您的问题，我会尝试在每条重写的规则前添加 /（或 /path/to/wordpress/from/document_root/）：

# DEBUG is set to TRUE
<If "-T env('DEBUG')">
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]

# add a trailing slash to /wp-admin
RewriteRule ^wp-admin$ /wp-admin/ [R=301,L]

RewriteCond %{REQUEST_FILENAME} -f [OR]
RewriteCond %{REQUEST_FILENAME} -d
RewriteRule ^ - [L]
RewriteRule ^(wp-(content|admin|includes).*) /$1 [L]
RewriteRule ^(.*\.php)$ /$1 [L]
RewriteRule . /index.php [L]
</If>

不过，我不能 100% 确定它是否会起作用，也不确定它为什么会起作用（因此我放置了最初的赏金）...

【讨论】：

【解决方案2】：

您可以将 If 语句更改为

<If "env('DEBUG') == true">

【讨论】：