doc/md/Troubleshooting.md

   1 # Troubleshooting
   2
   3 ## Login
   4
   5 ### I forgot my password!
   6
   7 Delete the file `data/config.json.php` and display the page again. You will be asked for a new login/password.
   8
   9 ### I'm locked out - Login bruteforce protection
  10
  11 Login form is protected against brute force attacks: 4 failed logins will ban the IP address from login for 30 minutes. Banned IPs can still browse links.
  12
  13 - To remove the current IP bans, delete the file `data/ipbans.php`
  14 - To list all login attempts, see `data/log.txt` (succesful/failed logins, bans/lifted bans)
  15
  16 ## Browser issues
  17
  18 ### Redirection issues (HTTP Referer)
  19
  20 Depending on its configuration and installed plugins, the browser may remove or alter (spoof) [HTTP referers](https://en.wikipedia.org/wiki/HTTP_referer), thus preventing Shaarli from properly redirecting between pages. Referer settings are available by browsing `about:config` and are documented [here](https://wiki.mozilla.org/Security/Referrer). `network.http.referer.spoofSource = true` in particular is known to break some functionality in Shaarli.
  21
  22 ### Firefox, localhost and redirections
  23
  24 `localhost` is not a proper Fully Qualified Domain Name (FQDN); if Firefox has been set up to spoof referers, or only accept requests from the same base domain/host,
  25 Shaarli redirections will not work properly. To solve this, assign a local domain to your host, e.g. `localhost.lan` in your [hosts file](https://en.wikipedia.org/wiki/Hosts_(file)) and browse Shaarli at http://localhost.lan/.
  26
  27 ## Hosting problems
  28
  29 ### Old PHP versions
  30
  31 On **free.fr**: free.fr now supports php 5.6.x([link](http://les.pages.perso.chez.free.fr/migrations/php5v6.io))
  32 and so support now the tag autocompletion but you have to do the following.
  33
  34 At the root of your webspace create a `sessions` directory and a `.htaccess` file containing:
  35
  36 ```xml
  37 <IfDefine Free>
  38 php56 1
  39 </IfDefine>
  40 ```
  41
  42 - If you have an error such as: `Parse error: syntax error, unexpected '=', expecting '(' in /links/index.php on line xxx`, it means that your host is using php4, not php5. Shaarli requires php 5.1. Try changing the file extension to `.php5`
  43 - On **1and1** : If you add the link from the page (and not from the bookmarklet), Shaarli will no be able to get the title of the page. You will have to enter it manually. (Because they have disabled the ability to download a file through HTTP).
  44 - If you have the error `Warning: file_get_contents() [function.file-get-contents]: URL file-access is disabled in the server configuration in /…/index.php on line xxx`, it means that your host has disabled the ability to fetch a file by HTTP in the php config (Typically in 1and1 hosting). Bad host. Change host. Or comment the following lines:
  45
  46 ```php
  47 //list($status,$headers,$data) = getHTTP($url,4); // Short timeout to keep the application responsive.
  48 // FIXME: Decode charset according to charset specified in either 1) HTTP response headers or 2) <head> in html
  49 //if (strpos($status,'200 OK')) $title=html_extract_title($data);
  50 ```
  51
  52 - On hosts which forbid outgoing HTTP requests (such as free.fr), some thumbnails will not work.
  53 - On **lost-oasis**, RSS doesn't work correctly, because of this message at the begining of the RSS/ATOM feed : `<? // tout ce qui est charge ici (generalement des includes et require) est charge en permanence. ?>`. To fix this, remove this message from `php-include/prepend.php`
  54
  55 ### Dates are not properly formatted
  56
  57 Shaarli tries to sniff the language of the browser (using `HTTP_ACCEPT_LANGUAGE` headers)
  58 and choose a date format accordingly. But Shaarli can only use the date formats
  59 (and more generally speaking, the locales) provided by the webserver.
  60 So even if you have a browser in French, you may end up with dates in US format
  61 (it's the case on sebsauvage.net :-( )
  62
  63 ### My session expires! I can't stay logged in
  64
  65 This can be caused by several things:
  66
  67 - Your php installation may not have a proper directory setup for session files. (eg. on Free.fr you need to create a  `session` directory on the root of your website.) You may need to create the session directory of set it up.
  68 - Most hosts regularly clean the temporary and session directories. Your host may be cleaning those directories too aggressively (eg.OVH hosts), forcing an expire of the session. You may want to set the session directory in your web root. (eg. Create the `sessions` subdirectory and add `ini_set('session.save_path', $_SERVER['DOCUMENT_ROOT'].'/../sessions');`. Make sure this directory is not browsable !)
  69 - If your IP address changes during surfing, Shaarli will force expire your session for security reasons (to prevent session cookie hijacking). This can happen when surfing from WiFi or 3G (you may have switched WiFi/3G access point), or in some corporate/university proxies which use load balancing (and may have proxies with several external IP addresses).
  70 - Some browser addons may interfer with HTTP headers (ipfuck/ipflood/GreaseMonkey…). Try disabling those.
  71 - You may be using OperaTurbo or OperaMini, which use their own proxies which may change from time to time.
  72 - If you have another application on the same webserver where Shaarli is installed, these application may forcefully expire php sessions.
  73
  74 ### Old apache versions, Internal Server Error
  75
  76 If you hosting provider only provides apache 2.2 and no support for `mod_version`, `.htaccess` files may cause 500 errors (Internal Server Error). See [this workaround](https://github.com/shaarli/Shaarli/issues/1196#issuecomment-412271085).
  77
  78 ## Sessions do not seem to work correctly on your server
  79
  80 Follow the instructions in the error message. Make sure you are accessing shaarli via a direct IP address or a proper hostname. If you have **no dots** in the hostname (e.g. `localhost` or `http://my-webserver/shaarli/`), some browsers will not store cookies at all (this respects the [HTTP cookie specification](http://curl.haxx.se/rfc/cookie_spec.html)).
  81