如果 url 不在列表中，混合 DBM 重写和重定向如何停止重写

Question

场景：我需要能够重定向某些 URL 并重写其他 URL

现在经过大量的修补，我几乎可以让一切正常工作

如果我example.com正常打工，200

如果我点击显示example.com/testrea的文本example.com/test11/ucm25685.htm和 200

如果我点击example.com/retest111/totest11.htm重定向example.com/test1/ucm12347.htm确实发生了，但是我会收到 403 Forbidden

如何阻止 403 Forbidden？我想我知道它为什么会发生，但是无法弄清楚如何阻止它。如果我禁用重写部分，重定向工作会找到并且不显示 403 forbidden。

为什么会发生 403 Forbidden，从日志中可以看出，当请求页面而不是在 RewriteMap 示例映射（rewrite.dbm）中时，它会发送/. 我虽然将是一个缺失的索引，但是添加-Indexes到Options没有改变，并且/确实有一个在 vhost 中定义的 index.htm。

问题是，如果 url 不在 RewriteMap 示例映射 (rewrite.dbm) 文件中，我在发出请求时如何不重写？

或者有没有更好的方法来混合重写和重定向，记住这仅适用于生产中的 POC，我将有几百次重写或重定向，并且 dbm 文件将随着新页面的移动而更新。

日志输出 LogLevel 警报重写：trace3

例子.com

[DATE] [rewrite:trace2] [pid 10412] mod_rewrite.c(470): [client 55.66.77.88:56079] 55.66.77.88 - - [example.com/sid#55ac8f2ead48][rid#55ac8f697290/initial] init rewrite engine with requested uri /
[DATE] [rewrite:trace3] [pid 10412] mod_rewrite.c(470): [client 55.66.77.88:56079] 55.66.77.88 - - [example.com/sid#55ac8f2ead48][rid#55ac8f697290/initial] applying pattern '^(.*)' to uri '/'
[DATE] [rewrite:trace3] [pid 10412] mod_rewrite.c(470): [client 55.66.77.88:56079] 55.66.77.88 - - [example.com/sid#55ac8f2ead48][rid#55ac8f697290/initial] applying pattern '^(.*)' to uri '/'
[DATE] [rewrite:trace2] [pid 10412] mod_rewrite.c(470): [client 55.66.77.88:56079] 55.66.77.88 - - [example.com/sid#55ac8f2ead48][rid#55ac8f697290/initial] rewrite '/' -> '/index.htm'
[DATE] [rewrite:trace2] [pid 10412] mod_rewrite.c(470): [client 55.66.77.88:56079] 55.66.77.88 - - [example.com/sid#55ac8f2ead48][rid#55ac8f697290/initial] local path result: /index.htm
[DATE] [rewrite:trace2] [pid 10412] mod_rewrite.c(470): [client 55.66.77.88:56079] 55.66.77.88 - - [example.com/sid#55ac8f2ead48][rid#55ac8f697290/initial] prefixed with document_root to /var/www/sites/me/index.htm
[DATE] [rewrite:trace1] [pid 10412] mod_rewrite.c(470): [client 55.66.77.88:56079] 55.66.77.88 - - [example.com/sid#55ac8f2ead48][rid#55ac8f697290/initial] go-ahead with /var/www/sites/me/index.htm [OK]

example.com/testrea

[DATE] [rewrite:trace2] [pid 10407] mod_rewrite.c(470): [client 55.66.77.88:56111] 55.66.77.88 - - [example.com/sid#55ac8f2ead48][rid#55ac8f698700/initial] init rewrite engine with requested uri /testrea
[DATE] [rewrite:trace3] [pid 10407] mod_rewrite.c(470): [client 55.66.77.88:56111] 55.66.77.88 - - [example.com/sid#55ac8f2ead48][rid#55ac8f698700/initial] applying pattern '^(.*)' to uri '/testrea'
[DATE] [rewrite:trace3] [pid 10407] mod_rewrite.c(470): [client 55.66.77.88:56111] 55.66.77.88 - - [example.com/sid#55ac8f2ead48][rid#55ac8f698700/initial] applying pattern '^(.*)' to uri '/testrea'
[DATE] [rewrite:trace2] [pid 10407] mod_rewrite.c(470): [client 55.66.77.88:56111] 55.66.77.88 - - [example.com/sid#55ac8f2ead48][rid#55ac8f698700/initial] rewrite '/testrea' -> '/test11/ucm25685.htm'
[DATE] [rewrite:trace2] [pid 10407] mod_rewrite.c(470): [client 55.66.77.88:56111] 55.66.77.88 - - [example.com/sid#55ac8f2ead48][rid#55ac8f698700/initial] local path result: /test11/ucm25685.htm
[DATE] [rewrite:trace2] [pid 10407] mod_rewrite.c(470): [client 55.66.77.88:56111] 55.66.77.88 - - [example.com/sid#55ac8f2ead48][rid#55ac8f698700/initial] prefixed with document_root to /var/www/sites/me/test11/ucm25685.htm
[DATE] [rewrite:trace1] [pid 10407] mod_rewrite.c(470): [client 55.66.77.88:56111] 55.66.77.88 - - [example.com/sid#55ac8f2ead48][rid#55ac8f698700/initial] go-ahead with /var/www/sites/me/test11/ucm25685.htm [OK]

example.com/retest111/totest11.htm

[DATE] [rewrite:trace2] [pid 10412] mod_rewrite.c(470): [client 55.66.77.88:56126] 55.66.77.88  - - [example.com/sid#55ac8f2ead48][rid#55ac8f69f2d0/initial] init rewrite engine with requested uri /retest111/totest11.htm
[DATE] [rewrite:trace3] [pid 10412] mod_rewrite.c(470): [client 55.66.77.88:56126] 55.66.77.88  - - [example.com/sid#55ac8f2ead48][rid#55ac8f69f2d0/initial] applying pattern '^(.*)' to uri '/retest111/totest11.htm'
[DATE] [rewrite:trace2] [pid 10412] mod_rewrite.c(470): [client 55.66.77.88:56126] 55.66.77.88  - - [example.com/sid#55ac8f2ead48][rid#55ac8f69f2d0/initial] rewrite '/retest111/totest11.htm' -> '/test1/ucm12347.htm'
[DATE] [rewrite:trace2] [pid 10412] mod_rewrite.c(470): [client 55.66.77.88:56126] 55.66.77.88  - - [example.com/sid#55ac8f2ead48][rid#55ac8f69f2d0/initial] explicitly forcing redirect with http://example.com/test1/ucm12347.htm
[DATE] [rewrite:trace1] [pid 10412] mod_rewrite.c(470): [client 55.66.77.88:56126] 55.66.77.88  - - [example.com/sid#55ac8f2ead48][rid#55ac8f69f2d0/initial] escaping http://example.com/test1/ucm12347.htm for redirect
[DATE] [rewrite:trace1] [pid 10412] mod_rewrite.c(470): [client 55.66.77.88:56126] 55.66.77.88  - - [example.com/sid#55ac8f2ead48][rid#55ac8f69f2d0/initial] redirect to http://example.com/test1/ucm12347.htm [REDIRECT/301]
[DATE] [rewrite:trace2] [pid 10412] mod_rewrite.c(470): [client 55.66.77.88:56126] 55.66.77.88  - - [example.com/sid#55ac8f2ead48][rid#55ac8f691260/initial] init rewrite engine with requested uri /test1/ucm12347.htm
[DATE] [rewrite:trace3] [pid 10412] mod_rewrite.c(470): [client 55.66.77.88:56126] 55.66.77.88  - - [example.com/sid#55ac8f2ead48][rid#55ac8f691260/initial] applying pattern '^(.*)' to uri '/test1/ucm12347.htm'
[DATE] [rewrite:trace3] [pid 10412] mod_rewrite.c(470): [client 55.66.77.88:56126] 55.66.77.88  - - [example.com/sid#55ac8f2ead48][rid#55ac8f691260/initial] applying pattern '^(.*)' to uri '/test1/ucm12347.htm'
[DATE] [rewrite:trace2] [pid 10412] mod_rewrite.c(470): [client 55.66.77.88:56126] 55.66.77.88  - - [example.com/sid#55ac8f2ead48][rid#55ac8f691260/initial] rewrite '/test1/ucm12347.htm' -> '/'
[DATE] [rewrite:trace2] [pid 10412] mod_rewrite.c(470): [client 55.66.77.88:56126] 55.66.77.88  - - [example.com/sid#55ac8f2ead48][rid#55ac8f691260/initial] local path result: /
[DATE] [rewrite:trace1] [pid 10412] mod_rewrite.c(470): [client 55.66.77.88:56126] 55.66.77.88  - - [example.com/sid#55ac8f2ead48][rid#55ac8f691260/initial] go-ahead with / [OK]

Webroot 的当前布局

test1/ucm12347.htm
test2/ucm23452.htm
test3/ucm34674.htm
test4/ucm43489.htm
test5/ucm10963.htm

test11/ucm25685.htm
test22/ucm87546.htm
test33/ucm32548.htm
test44/ucm95142.htm
test55/ucm56485.htm

/retest111/totest11.htm
/retest222/totest22.htm
/retest333/totest33.htm
/retest444/totest44.htm
/retest555/totest55.htm

2 正在转换为 DB 和 DBM 文件的文本文件：

重写.txt

httxt2dbm -i rewrite.txt -o rewrite.dbm

/ index.htm
/testrea test11/ucm25685.htm
/testreb test22/ucm87546.htm
/testrec test33/ucm32548.htm
/testred test44/ucm95142.htm
/testree test55/ucm56485.htm

重定向.txt

httxt2dbm -f db -i redirects.txt -o redirects.db

/retest111/totest11.htm test1/ucm12347.htm
/retest222/totest22.htm test2/ucm23452.htm
/retest333/totest33.htm test3/ucm34674.htm
/retest444/totest44.htm test4/ucm43489.htm
/retest555/totest55.htm test5/ucm10963.htm

在 httpd.conf 我有一个全局重写

<IfModule mod_rewrite.c>
    RewriteEngine On
    RewriteMap examplemap "dbm:/etc/httpd/conf/rewrite.dbm"
    RewriteRule ^(.*) /${examplemap:$1}
</IfModule>

和一个单独的虚拟主机

<VirtualHost *:80>
    DocumentRoot /var/www/sites/me
    ServerName example.com
    DirectoryIndex index.htm
    ErrorDocument 404 /index.php
    Options +FollowSymLinks
    RewriteEngine On
    RewriteOptions Inherit
    RewriteMap redirects dbm=db:/etc/httpd/conf/redirects.db
    RewriteCond ${redirects:$1} !=""
    RewriteRule ^(.*) /${redirects:$1} [redirect=permanent,last]
</VirtualHost>

Answer 1

我认为 403 被触发是因为您的DirectoryIndex文档（即index.htm）不存在。然而，这只是真正的潜在问题的最终结果......您无条件地重写示例映射 的返回值RewriteMap（可能是“空”）。我怀疑如果您直接请求或examplemapexample.com/test1/ucm12347.htm中不存在的任何 URL，您会看到相同的结果。 RewriteMap

当在您的examplemap 中找不到查找（在每个不重定向的RewriteMap请求上查找）时，您最终会重写到（文档根），因为从重写映射返回的结果为空。这将触发 mod_dir 来服务. 如果该文档不存在并且该选项未启用，那么您将收到 403 Forbidden。/DirectoryIndexDirectoryIndexIndexes

您通过创建 RewriteMap一个首先检查RewriteMap. 您需要对examplemap RewriteMap执行类似的操作。例如：

RewriteMap examplemap "dbm:/etc/httpd/conf/rewrite.dbm"
RewriteCond ${examplemap:$1} !=""
RewriteRule ^(.*) /${examplemap:$1} [L]

选择：

RewriteCond ${redirects:$1} !=""
RewriteRule ^(.*) /${redirects:$1} [redirect=permanent,last]

您可以将查找结果存储RewriteMap在环境变量中，以避免多次查找（在条件和替换RewriteRule 中）。尽管查找的结果RewriteMap被缓存，所以这可能看不到任何好处。例如：

RewriteRule (.*) - [E=REDIRECT_TO:${redirects:$1}]
RewriteCond %{ENV:REDIRECT_TO} .
RewriteRule ^ /%{ENV:REDIRECT_TO} [redirect=permanent,last]