Okay, I found what appears to be a rather odd bug, or at least a very odd
interaction between multiple paths through Apache. I'm running
Apache/2.0.52 (stock install for CentOS 4.4). Here's the configuration for
the site in question:
<VirtualHost 66.252.224.242:80>
ServerName boston.conman.org
ServerAdmin sean@xxxxxxxxxx
DocumentRoot /home/spc/web/sites/boston.conman.org/htdocs
ScriptAlias /cgi-bin/ /home/spc/web/sites/boston.conman.org/cgi-bin/
CustomLog /home/spc/web/logs/boston.conman.org combined
RewriteLog /tmp/rewrite.log
RewriteLogLevel 9
ErrorDocument 400 /boston.cgi/errors/400.html?status=400
ErrorDocument 401 /boston.cgi/errors/401.html?status=401
ErrorDocument 402 /boston.cgi/errors/402.html?status=402
ErrorDocument 403 /boston.cgi/errors/403.html?status=403
ErrorDocument 404 /boston.cgi/errors/404.html?status=404
ErrorDocument 405 /boston.cgi/errors/405.html?status=405
ErrorDocument 406 /boston.cgi/errors/406.html?status=406
ErrorDocument 407 /boston.cgi/errors/407.html?status=407
ErrorDocument 408 /boston.cgi/errors/408.html?status=408
ErrorDocument 409 /boston.cgi/errors/409.html?status=409
ErrorDocument 410 /boston.cgi/errors/410.html?status=410
ErrorDocument 411 /boston.cgi/errors/411.html?status=411
ErrorDocument 412 /boston.cgi/errors/412.html?status=412
ErrorDocument 413 /boston.cgi/errors/413.html?status=413
ErrorDocument 414 /boston.cgi/errors/414.html?status=414
ErrorDocument 415 /boston.cgi/errors/415.html?status=415
ErrorDocument 416 /boston.cgi/errors/416.html?status=416
ErrorDocument 417 /boston.cgi/errors/417.html?status=417
ErrorDocument 500 /boston.cgi/errors/500.html?status=500
ErrorDocument 501 /boston.cgi/errors/501.html?status=501
ErrorDocument 502 /boston.cgi/errors/502.html?status=502
ErrorDocument 503 /boston.cgi/errors/503.html?status=503
ErrorDocument 504 /boston.cgi/errors/504.html?status=504
ErrorDocument 505 /boston.cgi/errors/505.html?status=505
<Directory /home/spc/web/sites/boston.conman.org/htdocs>
Options All
AllowOverride None
AuthType Basic
AuthName "Boston Diaries Editor"
AuthUserFile /home/spc/web/sites/boston.conman.org/users
AuthGroupFile /home/spc/web/sites/boston.conman.org/groups
<LimitExcept HEAD GET>
Require valid-user
</LimitExcept>
RewriteEngine on
RewriteBase /
RewriteRule ^([0-9][0-9])(.*) boston.cgi/$1$2 [L]
RewriteRule ^parallel/$ parallel.cgi [L]
RewriteRule ^parallel/(.*) parallel.cgi/$1 [L]
RewriteRule ^archive/$ boston.cgi/archive/index.html [L]
RewriteRule ^about/$ boston.cgi/about/index.html [L]
RewriteRule ^about/(.*) boston.cgi/about/$1 [L]
RewriteRule ^refs/$ boston.cgi/refs/index.html [L]
RewriteRule ^refs/(.*) boston.cgi/refs/$1 [L]
RewriteRule ^addentry.html$ boston.cgi?cmd=new [L]
Redirect permanent /bdstyle.css http://boston.conman.org/CSS/screen.css
Redirect permanent /bd.rss http://boston.conman.org/bostondiaries.rss
Redirect permanent /bostondiaries.rss_ http://boston.conman.org/bostondiaries.rss
Redirect permanent /CSS/april.css http://boston.conman.org/CSS/april-2004.css
Redirect gone /doi.cgi
Redirect gone /notify.cgi
Redirect gone /test
Redirect gone /play
</Directory>
<Directory "/home/spc/web/sites/boston.conman.org/htdocs/foobar">
Options All
AllowOverride None
AuthType Basic
AuthName "Boston Diaries Editor"
AuthUserFile /home/spc/web/sites/boston.conman.org/users
AuthGroupFile /home/spc/web/sites/boston.conman.org/groups
Require valid-user
</Directory>
<Location "/addentry.html">
AuthType Basic
AuthName "Boston Diaries Editor"
AuthUserFile /home/spc/web/sites/boston.conman.org/users
AuthGroupFile /home/spc/web/sites/boston.conman.org/groups
Require valid-user
</Location>
</VirtualHost>
As you can see, a lot gets funnelled through boston.cgi. After about four
hours of debugging, I finally found my problem: if I comment out the
ErrorDocument directives, the authentication directives all work. Uncomment
the ErrorDocument directives, and all I get when I try to access
http://boston.conman.org/addentry.html
is a 400 response (not a 401, or a 404, but a plain 400). Nothing shows up
in the error_log. The rewrite log shows a whole lot of nothing:
X.X.X.X - - [28/Feb/2008:03:41:56 --0500] [boston.conman.org/sid#87f6de8][rid#88d25f8/initial/redir#1] (3) [per-dir /home/spc/web/sites/boston.conman.org/htdocs/] add path info postfix: /home/spc/web/sites/boston.conman.org/htdocs/boston.cgi -> /home/spc/web/sites/boston.conman.org/htdocs/boston.cgi/errors/401.html
X.X.X.X - - [28/Feb/2008:03:41:56 --0500] [boston.conman.org/sid#87f6de8][rid#88d25f8/initial/redir#1] (3) [per-dir /home/spc/web/sites/boston.conman.org/htdocs/] strip per-dir prefix: /home/spc/web/sites/boston.conman.org/htdocs/boston.cgi/errors/401.html -> boston.cgi/errors/401.html
X.X.X.X - - [28/Feb/2008:03:41:56 --0500] [boston.conman.org/sid#87f6de8][rid#88d25f8/initial/redir#1] (3) [per-dir /home/spc/web/sites/boston.conman.org/htdocs/] applying pattern '^([0-9][0-9])(.*)' to uri 'boston.cgi/errors/401.html'
X.X.X.X - - [28/Feb/2008:03:41:56 --0500] [boston.conman.org/sid#87f6de8][rid#88d25f8/initial/redir#1] (3) [per-dir /home/spc/web/sites/boston.conman.org/htdocs/] add path info postfix: /home/spc/web/sites/boston.conman.org/htdocs/boston.cgi -> /home/spc/web/sites/boston.conman.org/htdocs/boston.cgi/errors/401.html
X.X.X.X - - [28/Feb/2008:03:41:56 --0500] [boston.conman.org/sid#87f6de8][rid#88d25f8/initial/redir#1] (3) [per-dir /home/spc/web/sites/boston.conman.org/htdocs/] strip per-dir prefix: /home/spc/web/sites/boston.conman.org/htdocs/boston.cgi/errors/401.html -> boston.cgi/errors/401.html
X.X.X.X - - [28/Feb/2008:03:41:56 --0500] [boston.conman.org/sid#87f6de8][rid#88d25f8/initial/redir#1] (3) [per-dir /home/spc/web/sites/boston.conman.org/htdocs/] applying pattern '^parallel/$' to uri 'boston.cgi/errors/401.html'
X.X.X.X - - [28/Feb/2008:03:41:56 --0500] [boston.conman.org/sid#87f6de8][rid#88d25f8/initial/redir#1] (3) [per-dir /home/spc/web/sites/boston.conman.org/htdocs/] add path info postfix: /home/spc/web/sites/boston.conman.org/htdocs/boston.cgi -> /home/spc/web/sites/boston.conman.org/htdocs/boston.cgi/errors/401.html
X.X.X.X - - [28/Feb/2008:03:41:56 --0500] [boston.conman.org/sid#87f6de8][rid#88d25f8/initial/redir#1] (3) [per-dir /home/spc/web/sites/boston.conman.org/htdocs/] strip per-dir prefix: /home/spc/web/sites/boston.conman.org/htdocs/boston.cgi/errors/401.html -> boston.cgi/errors/401.html
X.X.X.X - - [28/Feb/2008:03:41:56 --0500] [boston.conman.org/sid#87f6de8][rid#88d25f8/initial/redir#1] (3) [per-dir /home/spc/web/sites/boston.conman.org/htdocs/] applying pattern '^parallel/(.*)' to uri 'boston.cgi/errors/401.html'
X.X.X.X - - [28/Feb/2008:03:41:56 --0500] [boston.conman.org/sid#87f6de8][rid#88d25f8/initial/redir#1] (3) [per-dir /home/spc/web/sites/boston.conman.org/htdocs/] add path info postfix: /home/spc/web/sites/boston.conman.org/htdocs/boston.cgi -> /home/spc/web/sites/boston.conman.org/htdocs/boston.cgi/errors/401.html
X.X.X.X - - [28/Feb/2008:03:41:56 --0500] [boston.conman.org/sid#87f6de8][rid#88d25f8/initial/redir#1] (3) [per-dir /home/spc/web/sites/boston.conman.org/htdocs/] strip per-dir prefix: /home/spc/web/sites/boston.conman.org/htdocs/boston.cgi/errors/401.html -> boston.cgi/errors/401.html
X.X.X.X - - [28/Feb/2008:03:41:56 --0500] [boston.conman.org/sid#87f6de8][rid#88d25f8/initial/redir#1] (3) [per-dir /home/spc/web/sites/boston.conman.org/htdocs/] applying pattern '^archive/$' to uri 'boston.cgi/errors/401.html'
X.X.X.X - - [28/Feb/2008:03:41:56 --0500] [boston.conman.org/sid#87f6de8][rid#88d25f8/initial/redir#1] (3) [per-dir /home/spc/web/sites/boston.conman.org/htdocs/] add path info postfix: /home/spc/web/sites/boston.conman.org/htdocs/boston.cgi -> /home/spc/web/sites/boston.conman.org/htdocs/boston.cgi/errors/401.html
X.X.X.X - - [28/Feb/2008:03:41:56 --0500] [boston.conman.org/sid#87f6de8][rid#88d25f8/initial/redir#1] (3) [per-dir /home/spc/web/sites/boston.conman.org/htdocs/] strip per-dir prefix: /home/spc/web/sites/boston.conman.org/htdocs/boston.cgi/errors/401.html -> boston.cgi/errors/401.html
X.X.X.X - - [28/Feb/2008:03:41:56 --0500] [boston.conman.org/sid#87f6de8][rid#88d25f8/initial/redir#1] (3) [per-dir /home/spc/web/sites/boston.conman.org/htdocs/] applying pattern '^about/$' to uri 'boston.cgi/errors/401.html'
X.X.X.X - - [28/Feb/2008:03:41:56 --0500] [boston.conman.org/sid#87f6de8][rid#88d25f8/initial/redir#1] (3) [per-dir /home/spc/web/sites/boston.conman.org/htdocs/] add path info postfix: /home/spc/web/sites/boston.conman.org/htdocs/boston.cgi -> /home/spc/web/sites/boston.conman.org/htdocs/boston.cgi/errors/401.html
X.X.X.X - - [28/Feb/2008:03:41:56 --0500] [boston.conman.org/sid#87f6de8][rid#88d25f8/initial/redir#1] (3) [per-dir /home/spc/web/sites/boston.conman.org/htdocs/] strip per-dir prefix: /home/spc/web/sites/boston.conman.org/htdocs/boston.cgi/errors/401.html -> boston.cgi/errors/401.html
X.X.X.X - - [28/Feb/2008:03:41:56 --0500] [boston.conman.org/sid#87f6de8][rid#88d25f8/initial/redir#1] (3) [per-dir /home/spc/web/sites/boston.conman.org/htdocs/] applying pattern '^about/(.*)' to uri 'boston.cgi/errors/401.html'
X.X.X.X - - [28/Feb/2008:03:41:56 --0500] [boston.conman.org/sid#87f6de8][rid#88d25f8/initial/redir#1] (3) [per-dir /home/spc/web/sites/boston.conman.org/htdocs/] add path info postfix: /home/spc/web/sites/boston.conman.org/htdocs/boston.cgi -> /home/spc/web/sites/boston.conman.org/htdocs/boston.cgi/errors/401.html
X.X.X.X - - [28/Feb/2008:03:41:56 --0500] [boston.conman.org/sid#87f6de8][rid#88d25f8/initial/redir#1] (3) [per-dir /home/spc/web/sites/boston.conman.org/htdocs/] strip per-dir prefix: /home/spc/web/sites/boston.conman.org/htdocs/boston.cgi/errors/401.html -> boston.cgi/errors/401.html
X.X.X.X - - [28/Feb/2008:03:41:56 --0500] [boston.conman.org/sid#87f6de8][rid#88d25f8/initial/redir#1] (3) [per-dir /home/spc/web/sites/boston.conman.org/htdocs/] applying pattern '^refs/$' to uri 'boston.cgi/errors/401.html'
X.X.X.X - - [28/Feb/2008:03:41:56 --0500] [boston.conman.org/sid#87f6de8][rid#88d25f8/initial/redir#1] (3) [per-dir /home/spc/web/sites/boston.conman.org/htdocs/] add path info postfix: /home/spc/web/sites/boston.conman.org/htdocs/boston.cgi -> /home/spc/web/sites/boston.conman.org/htdocs/boston.cgi/errors/401.html
X.X.X.X - - [28/Feb/2008:03:41:56 --0500] [boston.conman.org/sid#87f6de8][rid#88d25f8/initial/redir#1] (3) [per-dir /home/spc/web/sites/boston.conman.org/htdocs/] strip per-dir prefix: /home/spc/web/sites/boston.conman.org/htdocs/boston.cgi/errors/401.html -> boston.cgi/errors/401.html
X.X.X.X - - [28/Feb/2008:03:41:56 --0500] [boston.conman.org/sid#87f6de8][rid#88d25f8/initial/redir#1] (3) [per-dir /home/spc/web/sites/boston.conman.org/htdocs/] applying pattern '^refs/(.*)' to uri 'boston.cgi/errors/401.html'
X.X.X.X - - [28/Feb/2008:03:41:56 --0500] [boston.conman.org/sid#87f6de8][rid#88d25f8/initial/redir#1] (3) [per-dir /home/spc/web/sites/boston.conman.org/htdocs/] add path info postfix: /home/spc/web/sites/boston.conman.org/htdocs/boston.cgi -> /home/spc/web/sites/boston.conman.org/htdocs/boston.cgi/errors/401.html
X.X.X.X - - [28/Feb/2008:03:41:56 --0500] [boston.conman.org/sid#87f6de8][rid#88d25f8/initial/redir#1] (3) [per-dir /home/spc/web/sites/boston.conman.org/htdocs/] strip per-dir prefix: /home/spc/web/sites/boston.conman.org/htdocs/boston.cgi/errors/401.html -> boston.cgi/errors/401.html
X.X.X.X - - [28/Feb/2008:03:41:56 --0500] [boston.conman.org/sid#87f6de8][rid#88d25f8/initial/redir#1] (3) [per-dir /home/spc/web/sites/boston.conman.org/htdocs/] applying pattern '^addentry.html$' to uri 'boston.cgi/errors/401.html'
X.X.X.X - - [28/Feb/2008:03:41:56 --0500] [boston.conman.org/sid#87f6de8][rid#88d25f8/initial/redir#1] (1) [per-dir /home/spc/web/sites/boston.conman.org/htdocs/] pass through /home/spc/web/sites/boston.conman.org/htdocs/boston.cgi
(and so on and so on and so on)
Have I, in fact, found a bug? I'd rather *not* upgrade (as CentOS is still
using 2.0.52 and I'd have to do this from source, which is something I'm a
bit relunctant to do).
-spc
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