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jfjallid
Joined: 02 Apr 2016
Posts: 5
Location: sweden
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 Posted: Sat 02 Apr '16 15:12 Post subject: [SOLVED] Apache reverse proxy refused to execute script |
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Hi!
I have two ubuntu servers 14.04 running apache 2.4.7, mysql Ver 15.1 Distrib 10.0.22-MariaDB and php 5.5.9.
One of them is internal with no Internet access running an owncloud server and the other is facing the Internet with an apache server running a reverse proxy for the internal server to enable access to owncloud from the Internet.
The problem I'm having is that when going through the reverse proxy the webpage loads but most of the content seems to fail and the website doesn't work as expected. If I open the console I get the variants of the following error messages:
In firefox console:
| Code: | The stylesheet <my-server-address>/core/css/jquery.ocdialog.css?v=f8ed568350f3f0107c10d8e06c55f727 was not loaded because its MIME type, "text/html", is not "text/css".
SyntaxError: expected expression, got '<' |
In google chrome console:
| Code: | | Refused to execute script from '<my-server-address>/index.php/core/js/oc.js?v=f8ed568350f3f0107c10d8e06c55f727' because its MIME type ('text/html') is not executable, and strict MIME type checking is enabled. |
Accessing owncloud webpage internally works good which is why I think that the problem is with the reverse proxy.
Any help would be much appreciated!
Last edited by jfjallid on Sun 05 Jun '16 11:48; edited 1 time in total |
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James Blond
Moderator
Joined: 19 Jan 2006
Posts: 7298
Location: Germany, Next to Hamburg
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| Posted: Mon 04 Apr '16 12:00 Post subject: |
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An option might be a 404 error. Please open the URL in your Firefox browser and look at the content if it is the CSS file or a page not found.
If it is not a 404 / page not found
add the following to the apache main config file on both servers.
| Code: |
AddType text/css .css
AddType text/javascript .js
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jfjallid
Joined: 02 Apr 2016
Posts: 5
Location: sweden
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| Posted: Fri 08 Apr '16 22:43 Post subject: |
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Where would I found the 404 error in Firefox?
I added
| Code: |
AddType text/css .css
AddType text/javascript .js
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to /etc/apache2/apache2.conf on both webservers but doesn't seem to make any difference.
I do most of my debugging through chrome since I can use my android phone with debugging to get the console messages when accessing the site via the reverse proxy.
What I've found is that when I try to access the page I get the error message for all javascript files:
| Code: | | Refused to execute script from ... because its MIME type ('text/html') is not executable, and strict MIME type checking is enabled. |
I also get the variants of the message:
| Code: | | Resource interpreted as Stylesheet but transferred with MIME type text/html: "http://<my-server-address>/core/css/styles.css?v=f8ed568350f3f0107c10d8e06c55f727". |
I get the following http headers if they are of any help:
| Code: |
HTTP/1.1 200 OK
Date: Fri, 08 Apr 2016 20:04:11 GMT
Server: Apache/2.4.7 (Ubuntu)
X-Powered-By: PHP/5.5.9-1ubuntu4.14
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Content-Security-Policy: default-src 'self'; script-src 'self' 'unsafe-eval'; style-src 'self' 'unsafe-inline'; frame-src *; img-src * data: blob:; font-src 'self' data:; media-src *; connect-src *
X-Content-Type-Options: nosniff
X-XSS-Protection: 1; mode=block
X-Robots-Tag: none
X-Frame-Options: SAMEORIGIN
X-Download-Options: noopen
X-Permitted-Cross-Domain-Policies: none
Content-type: text/html; charset=UTF-8
Set-Cookie: ocirse4el2n4=0aad97s9uv1g5sclishd7sev85; path=/; HttpOnly
Set-Cookie: oc_sessionPassphrase=YFrm%2BphkwzrtmgZ%2BJPnv9%2BJXZ4jYMK7
TRPuHrgyoJ324CiFcGDm%2FrVITkXEjLDZXYUw%2BGLGrXe1tt8v3YZiHa
bYyd3Muwfq7BTcY%2FuFzVimQxYGCa682%2FDehZGG0HyRS; path=/; httponly
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Now if I remove the line from .htaccess file:
| Code: | Header set X-Content-Type-Options "nosniff"
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I get the same "Resource interpreted as Stylesheet" messages but also variants of:
| Code: |
Uncaught SyntaxError: Unexpected token < oc.js?v=f8ed568... :1
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When I follow the link I see the following line which looks strange but I'm not sure if that is the problem or not:
| Code: | | <script src="/index.php/core/js/oc.js?v=f8ed568350f3f0107c10d8e06c55f727"></script> |
all the other script tags use the path: /core/... and not /index.php/core/
Not sure how I could find the file that contains that line to try and change it. |
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James Blond
Moderator
Joined: 19 Jan 2006
Posts: 7298
Location: Germany, Next to Hamburg
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| Posted: Mon 18 Apr '16 11:53 Post subject: |
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| Open /index.php/core/js/oc.js?v=f8ed568350f3f0107c10d8e06c55f727 in your browser and look into the source code. I guess there is an error. |
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jfjallid
Joined: 02 Apr 2016
Posts: 5
Location: sweden
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| Posted: Wed 20 Apr '16 23:47 Post subject: |
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| James Blond wrote: | | Open /index.php/core/js/oc.js?v=f8ed568350f3f0107c10d8e06c55f727 in your browser and look into the source code. I guess there is an error. |
Seems like they fixed that thing in the last release although it didn't solve my problem.
I've compared the http response headers from requesting a css file when going directly and when going via the reverse proxy. I found that when going directly the Content-Type is text/css
but when going through reverse proxy the Content-Type is text/html; charset=UTF-8
Seems like apache is changing the Content-Type for some reason? I tried putting in apache2.conf but didn't make any difference. |
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James Blond
Moderator
Joined: 19 Jan 2006
Posts: 7298
Location: Germany, Next to Hamburg
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| Posted: Sun 24 Apr '16 17:47 Post subject: |
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| I wonder why that file is within the rewriting since it should be a static file. The index.php in the url still makes me wonder. |
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jfjallid
Joined: 02 Apr 2016
Posts: 5
Location: sweden
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| Posted: Mon 25 Apr '16 0:08 Post subject: |
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Well, they fixed the thing with index.php in the url in the latest update so that is not present anymore.
Is there anyway I can force the reverse proxy to not change content type or atleast force it to use text/css for css files?
At first I thought that it applies the content type text/html because it received a file without content type but since I get the content type text/css when I query the server directly I can't see why the reverse proxy would receive any different response and change it. |
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jfjallid
Joined: 02 Apr 2016
Posts: 5
Location: sweden
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| Posted: Sun 05 Jun '16 11:46 Post subject: |
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I finally found out that I was missing a trailing / on the ProxyPass commands.
Previously I had written:
| Code: | ProxyPass / http://cloud.myDomain.com
ProxyPassReverse / http://cloud.myDomain.com |
It should be:
| Code: | ProxyPass / http://cloud.myDomain.com/
ProxyPassReverse / http://cloud.myDomain.com/ |
For some reason that led to problems with wrong content type. |
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