Nginx's bug(alias and $request_uri to conflict)

monad · October 11, 2010, 4:48am

thanks!

my nginx version is 0.8.52, index.html in
/home/my_name/tools/nginx/html/
, this is my nginx config:

worker_processes 1;

error_log logs/error.log debug;
events {
worker_connections 1024;
}
http {
include mime.types;
default_type application/octet-stream;
expires 1y;
sendfile on;
server {
listen 8080;
server_name localhost;
location ~* ^/html/(.+.html)$ {
alias /home/my_name/tools/nginx/html/$1;
if ($request_uri ~ .(html|htm|shtml)$) {
expires 1h;
}
}
error_page 500 502 503 504 /50x.html;
location = /50x.html {
root html;
}
}
}

and then exec curl -I 127.0.0.1:8080/html/index.html:

HTTP/1.1 404 Not Found
Server: nginx/0.8.52
Date: Mon, 11 Oct 2010 02:24:25 GMT
Content-Type: text/html
Content-Length: 169
Connection: keep-alive

and this is error log:

2010/10/11 10:24:25 [debug] 8604#0: *1 http request line: “GET
/html/index.html HTTP/1.1”
2010/10/11 10:24:25 [debug] 8604#0: *1 http uri: “/html/index.html”
2010/10/11 10:24:25 [debug] 8604#0: *1 http args: “”
2010/10/11 10:24:25 [debug] 8604#0: *1 http exten: “html”
2010/10/11 10:24:25 [debug] 8604#0: *1 http process request header line
2010/10/11 10:24:25 [debug] 8604#0: *1 http header: “User-Agent:
curl/7.21.1
(i686-pc-linux-gnu) libcurl/7.21.1 OpenSSL/1.0.0a zlib/1.2.5”
2010/10/11 10:24:25 [debug] 8604#0: *1 http header: “Host:
127.0.0.1:8080”
2010/10/11 10:24:25 [debug] 8604#0: *1 http header: “Accept: /”
2010/10/11 10:24:25 [debug] 8604#0: *1 http header done
2010/10/11 10:24:25 [debug] 8604#0: *1 event timer del: 3: 2568703927
2010/10/11 10:24:25 [debug] 8604#0: *1 rewrite phase: 0
2010/10/11 10:24:25 [debug] 8604#0: *1 test location: “/50x.html”
2010/10/11 10:24:25 [debug] 8604#0: *1 test location: ~
“^/html/(.+.html)$”
2010/10/11 10:24:25 [debug] 8604#0: *1 using configuration
“^/html/(.+.html)$”
2010/10/11 10:24:25 [debug] 8604#0: *1 http cl:-1 max:1048576
2010/10/11 10:24:25 [debug] 8604#0: *1 rewrite phase: 2
2010/10/11 10:24:25 [debug] 8604#0: *1 http script var
2010/10/11 10:24:25 [debug] 8604#0: *1 http script var:
“/html/index.html”
2010/10/11 10:24:25 [debug] 8604#0: *1 http script regex:
“.(html|htm|shtml)$”
2010/10/11 10:24:25 [notice] 8604#0: *1 “.(html|htm|shtml)$” matches
“/html/index.html”, client: 127.0.0.1, server: localhost, request: “GET
/html/index.html HTTP/1.1”, host: “127.0.0.1:8080”
2010/10/11 10:24:25 [debug] 8604#0: *1 http script if
2010/10/11 10:24:25 [debug] 8604#0: *1 post rewrite phase: 3
2010/10/11 10:24:25 [debug] 8604#0: *1 generic phase: 4
2010/10/11 10:24:25 [debug] 8604#0: *1 generic phase: 5
2010/10/11 10:24:25 [debug] 8604#0: *1 access phase: 6
2010/10/11 10:24:25 [debug] 8604#0: *1 access phase: 7
2010/10/11 10:24:25 [debug] 8604#0: *1 post access phase: 8
2010/10/11 10:24:25 [debug] 8604#0: *1 content phase: 9
2010/10/11 10:24:25 [debug] 8604#0: *1 content phase: 10
2010/10/11 10:24:25 [debug] 8604#0: *1 content phase: 11
2010/10/11 10:24:25 [debug] 8604#0: *1 http script copy:
“/home/my_name/tools/nginx/html/”
2010/10/11 10:24:25 [debug] 8604#0: *1 http script capture: “html”
2010/10/11 10:24:25 [debug] 8604#0: *1 http filename:
“/home/my_name/tools/nginx/html/htmlTTP/1.1
User-Agent”
2010/10/11 10:24:25 [debug] 8604#0: *1 add cleanup: 09C64B40
2010/10/11 10:24:25 [error] 8604#0: *1 open()
“/home/my_name/tools/nginx/html/htm” failed (2: No such file or
directory),
client: 127.0.0.1, server: localhost, request: “GET /html/index.html
HTTP/1.1”, host: “127.0.0.1:8080”
2010/10/11 10:24:25 [debug] 8604#0: *1 http finalize request: 404,
“/html/index.html?” a:1, c:1
2010/10/11 10:24:25 [debug] 8604#0: *1 http special response: 404,
“/html/index.html?”
2010/10/11 10:24:25 [debug] 8604#0: *1 http set discard body
2010/10/11 10:24:25 [debug] 8604#0: *1 HTTP/1.1 404 Not Found

and i remove this line in nginx config :

if ($request_uri ~ .(html|htm|shtml)$) {
expires 1h;
}

and exec curl -I 127.0.0.1:8080/html/index.html:

HTTP/1.1 200 OK
Server: nginx/0.8.52
Date: Mon, 11 Oct 2010 02:26:33 GMT
Content-Type: text/html
Content-Length: 158
Last-Modified: Sat, 05 Jun 2010 15:20:23 GMT
Connection: keep-alive
Expires: Tue, 11 Oct 2011 02:26:33 GMT
Cache-Control: max-age=31536000
Accept-Ranges: bytes

–
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monad · October 11, 2010, 7:07am

On Mon, Oct 11, 2010 at 10:46:28AM +0800, Simon L. wrote:

}
if ($request_uri ~ .(html|htm|shtml)$) {
expires 1h;
}
}
error_page 500 502 503 504 /50x.html;
location = /50x.html {
root html;
}
}
}

If is Evil… when used in location context | NGINX
location ~* ^/html/(.+.html)$ {
alias /home/my_name/tools/nginx/html/$1;

it’s better to change to just

location ~* ^/html/.+.html$ {
root /home/my_name/tools/nginx;
…|shtml)$ is not matched by .html)$

regex is usele here, so

  location  /html/ {
      root   /home/my_name/tools/nginx;
      expires     1h;
 }

–
Igor S.
http://sysoev.ru/en/

monad · October 11, 2010, 7:58am

thank you!

On Mon, Oct 11, 2010 at 1:06 PM, Igor S. [email protected] wrote:

events {
location ~* ^/html/(.+.html)$ {
}

–
Igor S.
Igor Sysoev

nginx mailing list
[email protected]
nginx Info Page

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blog: www.pagefault.info

twitter: www.twitter.com/minibobo

monad · October 11, 2010, 9:31am

Hello!

On Mon, Oct 11, 2010 at 10:46:28AM +0800, Simon L. wrote:

}
if ($request_uri ~ .(html|htm|shtml)$) {
expires 1h;
}

This is known issue with “if”. Avoid using “if”, use two separate
locations instead.

Maxim D.