Bug 59491 - mod_rewrite proxy uses wrong filename for ^$
Summary: mod_rewrite proxy uses wrong filename for ^$
Status: NEW
Alias: None
Product: Apache httpd-2
Classification: Unclassified
Component: mod_rewrite (show other bugs)
Version: 2.4.20
Hardware: PC Linux
: P2 normal (vote)
Target Milestone: ---
Assignee: Apache HTTPD Bugs Mailing List
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2016-05-11 22:15 UTC by Jim Paris
Modified: 2016-05-11 22:15 UTC (History)
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Description Jim Paris 2016-05-11 22:15:08 UTC 
This seems related to Bug 53929.  With a rule like this:

  RewriteRule ^$ http://jim.sh/foo.txt [P]

then requesting "http://jim.sh/" incorrectly returns the contents of "index.html" instead of "foo.txt".  This had previously worked fine on 2.2.x and broke when I upgraded to 2.4.x.  Either of these replacements work as expected:

  RewriteRule ^test$ http://jim.sh/foo.txt [P]
  RewriteRule ^$ foo.txt

(and the latter is of course what I should have used to begin with!)
Here is the full log of the erroneous case:

[Wed May 11 17:42:38.139585 2016] [mpm_prefork:notice] [pid 11161] AH00163: Apache/2.4.20 (Debian) SVN/1.8.10 OpenSSL/1.0.2d mod_wsgi/4.3.0 Python/2.7.9 mod_perl/2.0.9dev Perl/v5.20.2 configured -- resuming normal operations
[Wed May 11 17:42:38.139601 2016] [core:notice] [pid 11161] AH00094: Command line: '/usr/sbin/apache2'
[Wed May 11 17:42:39.636867 2016] [rewrite:trace2] [pid 11231] mod_rewrite.c(477): [client 64.20.176.10:46922] 64.20.176.10 - - [jim.sh/sid#7fa0670547e8][rid#7fa0644890a0/initial] init rewrite engine with requested uri /
[Wed May 11 17:42:39.636931 2016] [rewrite:trace3] [pid 11231] mod_rewrite.c(477): [client 64.20.176.10:46922] 64.20.176.10 - - [jim.sh/sid#7fa0670547e8][rid#7fa0644890a0/initial] applying pattern '^/store$' to uri '/'
[Wed May 11 17:42:39.636947 2016] [rewrite:trace3] [pid 11231] mod_rewrite.c(477): [client 64.20.176.10:46922] 64.20.176.10 - - [jim.sh/sid#7fa0670547e8][rid#7fa0644890a0/initial] applying pattern '^/store/(.*)$' to uri '/'
[Wed May 11 17:42:39.636956 2016] [rewrite:trace1] [pid 11231] mod_rewrite.c(477): [client 64.20.176.10:46922] 64.20.176.10 - - [jim.sh/sid#7fa0670547e8][rid#7fa0644890a0/initial] pass through /
[Wed May 11 17:42:39.637398 2016] [rewrite:trace3] [pid 11231] mod_rewrite.c(477): [client 64.20.176.10:46922] 64.20.176.10 - - [jim.sh/sid#7fa0670547e8][rid#7fa0644890a0/initial] [perdir /www/psy/] strip per-dir prefix: /www/psy/ -> 
[Wed May 11 17:42:39.637408 2016] [rewrite:trace3] [pid 11231] mod_rewrite.c(477): [client 64.20.176.10:46922] 64.20.176.10 - - [jim.sh/sid#7fa0670547e8][rid#7fa0644890a0/initial] [perdir /www/psy/] applying pattern '^$' to uri ''
[Wed May 11 17:42:39.637422 2016] [rewrite:trace4] [pid 11231] mod_rewrite.c(477): [client 64.20.176.10:46922] 64.20.176.10 - - [jim.sh/sid#7fa0670547e8][rid#7fa0644890a0/initial] [perdir /www/psy/] RewriteCond: input='curl/7.47.0' pattern='^Wget.*' => not-matched
[Wed May 11 17:42:39.637431 2016] [rewrite:trace4] [pid 11231] mod_rewrite.c(477): [client 64.20.176.10:46922] 64.20.176.10 - - [jim.sh/sid#7fa0670547e8][rid#7fa0644890a0/initial] [perdir /www/psy/] RewriteCond: input='curl/7.47.0' pattern='^lwp-request.*' => not-matched
[Wed May 11 17:42:39.637440 2016] [rewrite:trace4] [pid 11231] mod_rewrite.c(477): [client 64.20.176.10:46922] 64.20.176.10 - - [jim.sh/sid#7fa0670547e8][rid#7fa0644890a0/initial] [perdir /www/psy/] RewriteCond: input='curl/7.47.0' pattern='^puf.*' => not-matched
[Wed May 11 17:42:39.637448 2016] [rewrite:trace3] [pid 11231] mod_rewrite.c(477): [client 64.20.176.10:46922] 64.20.176.10 - - [jim.sh/sid#7fa0670547e8][rid#7fa0644890a0/initial] [perdir /www/psy/] strip per-dir prefix: /www/psy/ -> 
[Wed May 11 17:42:39.637455 2016] [rewrite:trace3] [pid 11231] mod_rewrite.c(477): [client 64.20.176.10:46922] 64.20.176.10 - - [jim.sh/sid#7fa0670547e8][rid#7fa0644890a0/initial] [perdir /www/psy/] applying pattern '^$' to uri ''
[Wed May 11 17:42:39.637465 2016] [rewrite:trace4] [pid 11231] mod_rewrite.c(477): [client 64.20.176.10:46922] 64.20.176.10 - - [jim.sh/sid#7fa0670547e8][rid#7fa0644890a0/initial] [perdir /www/psy/] RewriteCond: input='curl/7.47.0' pattern='^curl.*' => matched
[Wed May 11 17:42:39.637473 2016] [rewrite:trace2] [pid 11231] mod_rewrite.c(477): [client 64.20.176.10:46922] 64.20.176.10 - - [jim.sh/sid#7fa0670547e8][rid#7fa0644890a0/initial] [perdir /www/psy/] rewrite '' -> 'http://jim.sh/foo.txt'
[Wed May 11 17:42:39.637483 2016] [rewrite:trace2] [pid 11231] mod_rewrite.c(477): [client 64.20.176.10:46922] 64.20.176.10 - - [jim.sh/sid#7fa0670547e8][rid#7fa0644890a0/initial] [perdir /www/psy/] escaped URI in per-dir context for proxy, http://jim.sh/foo.txt -> http://jim.sh/foo.txt
[Wed May 11 17:42:39.637490 2016] [rewrite:trace2] [pid 11231] mod_rewrite.c(477): [client 64.20.176.10:46922] 64.20.176.10 - - [jim.sh/sid#7fa0670547e8][rid#7fa0644890a0/initial] [perdir /www/psy/] forcing proxy-throughput with http://jim.sh/foo.txt
[Wed May 11 17:42:39.637534 2016] [rewrite:trace1] [pid 11231] mod_rewrite.c(477): [client 64.20.176.10:46922] 64.20.176.10 - - [jim.sh/sid#7fa0670547e8][rid#7fa0644890a0/initial] [perdir /www/psy/] go-ahead with proxy request proxy:http://jim.sh/foo.txt [OK]
[Wed May 11 17:42:39.637579 2016] [rewrite:trace2] [pid 11231] mod_rewrite.c(477): [client 64.20.176.10:46922] 64.20.176.10 - - [jim.sh/sid#7fa0670547e8][rid#7fa06447f0a0/subreq] init rewrite engine with requested uri /index.html
[Wed May 11 17:42:39.637588 2016] [rewrite:trace1] [pid 11231] mod_rewrite.c(477): [client 64.20.176.10:46922] 64.20.176.10 - - [jim.sh/sid#7fa0670547e8][rid#7fa06447f0a0/subreq] pass through /index.html
[Wed May 11 17:42:39.637616 2016] [rewrite:trace3] [pid 11231] mod_rewrite.c(477): [client 64.20.176.10:46922] 64.20.176.10 - - [jim.sh/sid#7fa0670547e8][rid#7fa06447f0a0/subreq] [perdir /www/psy/] strip per-dir prefix: /www/psy/index.html -> index.html
[Wed May 11 17:42:39.637638 2016] [rewrite:trace3] [pid 11231] mod_rewrite.c(477): [client 64.20.176.10:46922] 64.20.176.10 - - [jim.sh/sid#7fa0670547e8][rid#7fa06447f0a0/subreq] [perdir /www/psy/] applying pattern '^$' to uri 'index.html'
[Wed May 11 17:42:39.637648 2016] [rewrite:trace3] [pid 11231] mod_rewrite.c(477): [client 64.20.176.10:46922] 64.20.176.10 - - [jim.sh/sid#7fa0670547e8][rid#7fa06447f0a0/subreq] [perdir /www/psy/] strip per-dir prefix: /www/psy/index.html -> index.html
[Wed May 11 17:42:39.637655 2016] [rewrite:trace3] [pid 11231] mod_rewrite.c(477): [client 64.20.176.10:46922] 64.20.176.10 - - [jim.sh/sid#7fa0670547e8][rid#7fa06447f0a0/subreq] [perdir /www/psy/] applying pattern '^foo$' to uri 'index.html'
[Wed May 11 17:42:39.637662 2016] [rewrite:trace1] [pid 11231] mod_rewrite.c(477): [client 64.20.176.10:46922] 64.20.176.10 - - [jim.sh/sid#7fa0670547e8][rid#7fa06447f0a0/subreq] [perdir /www/psy/] pass through /www/psy/index.html