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Fix Nginx subdir URL install docs which allowed download of settings.yml 

Closes: #1617

There is an issue with the setup example in https://asciimoo.github.io/searx/dev/install/installation.html#installation for subdirectory URL deployments:

```nginx
root /usr/local/searx;

location = /searx { rewrite ^ /searx/; }
        try_files $uri @searx;
}
location @searx {
        uwsgi_param SCRIPT_NAME /searx;
        include uwsgi_params;
        uwsgi_modifier1 30;
        uwsgi_pass unix:/run/uwsgi/app/searx/socket;
}
```

`try_files` causes Nginx to search for files in the server root first. If it matches a file, it is returned. Only if no file matched, the request is passed to uwsgi. The worst consequence I can think of is that  `settings.yml` can be downloaded without authentication (where secrets and configuration details are stored).

To fix this, I propose:

```nginx
location = /searx {
        rewrite ^ /searx/;
}

location /searx/static {
}

location /searx {
        uwsgi_param SCRIPT_NAME /searx;
        include uwsgi_params;
        uwsgi_pass unix:/run/uwsgi/app/searx/socket;
}
```

And add

```
route-run = fixpathinfo:
```

to `/etc/uwsgi/apps-available/searx.ini` because `uwsgi_modifier1 30` is apparently deprecated. Ref: https://uwsgi-docs.readthedocs.io/en/latest/Changelog-2.0.11.html#fixpathinfo-routing-action

I assume this issue exists because some uwsgi upstream docs also use the `try_files` construct (at least I have seen this somewhere in the docs or somewhere else on the Internet but cannot find it right now again).

https://uwsgi-docs.readthedocs.io/en/latest/Nginx.html#hosting-multiple-apps-in-the-same-process-aka-managing-script-name-and-path-info also warns about this:

> If used incorrectly a configuration like this may cause security problems. For your sanity’s sake, double-triple-quadruple check that your application files, configuration files and any other sensitive files are outside of the root of the static files.
This commit is contained in:
Robin Schneider 2019-12-31 14:24:27 +01:00
parent 754a10c1c1
commit a1d9c81915
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1 changed files with 10 additions and 6 deletions
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16
docs/admin/installation.rst
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@ -114,6 +114,9 @@ content:
# Module to import
module = searx.webapp
# Support running the module from a webserver subdirectory.
route-run = fixpathinfo:
# Virtualenv and python path
virtualenv = /usr/local/searx/searx-ve/
pythonpath = /usr/local/searx/
@ -180,14 +183,16 @@ Add this configuration in the server config file
.. code:: nginx
location = /searx { rewrite ^ /searx/; }
location /searx {
try_files $uri @searx;
location = /searx {
rewrite ^ /searx/;
}
location @searx {
location /searx/static {
}
location /searx {
uwsgi_param SCRIPT_NAME /searx;
include uwsgi_params;
uwsgi_modifier1 30;
uwsgi_pass unix:/run/uwsgi/app/searx/socket;
}
@ -338,4 +343,3 @@ References
* How to: `Setup searx in a couple of hours with a free SSL certificate
<https://www.reddit.com/r/privacytoolsIO/comments/366kvn/how_to_setup_your_own_privacy_respecting_search/>`__