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rewrite of the doc/settings.md

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Settings
===
Here are some of the built-in features which don't have an exposed interface or are otherwise undocumented.
Configuration settings are stored in the file ".htconfig.php".
Edit this file with a text editor to make the desired changes.
Several system settings are already documented in that file and will not be covered here.
# Settings
Hot Keys
---
On the front page of the admin panel you will see a summary of information about your node.
These information include the amount of messages currently being processed in the queues.
The first number is the number of messages being actively sent.
This number should decrease quickly.
The second is the messages which could for various reasons not being delivered.
They will be resend later.
You can have a quick glance into that second queus in the "Inspect Queue" section of the admin panel.
Then you get an overview of the accounts on your node, which can be moderated in the "Users" section of the panel.
As well as an overview of the currently active addons
The list is linked, so you can have quick access to the plugin settings.
And finally you are informed about the version of Friendica you have installed.
If you contact the devs with a bug or problem, please also mention the version of your node.
Friendica traps the following keyboard events:
The admin panel is seperated into subsections accessible from the side bar of the panel.
* [Pause] - Pauses "Ajax" update activity. This is the process that provides updates without reloading the page. You may wish to pause it to reduce network usage and/or as a debugging aid for javascript developers. A pause indicator will appear at the lower right hand corner of the page. Hit the [pause] key once again to resume.
## Site
Birthday Notifications
---
This section of the admin panel contains the main configuration of your Friendica node.
It is separated into several sub-section beginning with the basic settings at the top, advancing towards the bottom of the page.
Birthday events are published on your Home page for any friends having a birthday in the coming 6 days.
In order for your birthday to be discoverable by all of your friends, you must set your birthday (at least the month and day) in your default profile.
You are not required to provide the year.
Most configuration options have a help text in the admin panel.
Therefore this document does not yet cover all the options
System settings
---
### Basic Settings
**Settings should be done in the admin panel** (/admin).
Those settings found in the database, will always override the settings added to the ``.htconfig.php`` file.
###Language
Please see util/README for information on creating language translations.
Config:
$a->config['system']['language'] = 'name';
###System Theme
Choose a theme to be the default system theme. This can be over-ridden by user profiles.
Default theme is "default".
Config:
$a->config['system']['theme'] = 'theme-name';
###Proxy Configuration Settings
If your site uses a proxy to connect to the internet, you may use these settings to communicate with the outside world.
The outside world still needs to be able to see your website, or this will not be very useful.
Config:
$a->config['system']['proxy'] = "http://proxyserver.domain:port";
$a->config['system']['proxyuser'] = "username:password";
###Network Timeout
How long to wait on a network communication before timing out.
Value is in seconds.
Default is 60 seconds.
Set to 0 for unlimited (not recommended).
Config:
$a->config['system']['curl_timeout'] = 60;
###Banner/Logo
#### Banner/Logo
Set the content for the site banner.
The default logo is the Friendica logo and name.
You may wish to provide HTML/CSS to style and/or position this content, as it may not be themed by default.
Config:
#### Language
$a->config['system']['banner'] = '<span id="logo-text">My Great Website</span>';
This option will set the default language for the node.
It is used as fall back setting should Friendica fail to recognize the visitors preferences and can be overwritten by user settings.
###Maximum Image Size
The Friendica community offers some translations.
Some more compleate then others.
See [this help page](/help/translations) for more information about the translation process.
Maximum size in bytes of uploaded images.
The default is set to 0, which means no limits.
#### System Theme
Config:
Choose a theme to be the default system theme.
This can be over-ridden by user profiles.
Default theme is "duepunto zero" at the moment.
$a->config['system']['maximagesize'] = 1000000;
You may also want to set a special theme for mobile interfaces.
Which may or may not be neccessary depending of the mobile friendlyness of the desktop theme you have chosen.
The `vier` theme for instance is mobile friendly.
###UTF-8 Regular Expressions
### Registration
During registrations, full names are checked using UTF-8 regular expressions.
This requires PHP to have been compiled with a special setting to allow UTF-8 expressions.
If you are completely unable to register accounts, set no_utf to true.
The default is set to false (meaning UTF8 regular expressions are supported and working).
Config:
$a->config['system']['no_utf'] = true;
###Check Full Names
#### Check Full Names
You may find a lot of spammers trying to register on your site.
During testing we discovered that since these registrations were automatic, the "Full Name" field was often set to just an account name with no space between first and last name.
If you would like to support people with only one name as their full name, you may change this setting to true.
Default is false.
Config:
$a->config['system']['no_regfullname'] = true;
###OpenID
#### OpenID
By default, OpenID may be used for both registration and logins.
If you do not wish to make OpenID facilities available on your system (at all), set 'no_openid' to true.
Default is false.
Config:
$a->config['system']['no_openid'] = true;
###Multiple Registrations
#### Multiple Registrations
The ability to create "Pages" requires a person to register more than once.
Your site configuration can block registration (or require approval to register).
By default, logged in users can register additional accounts for use as pages.
These will still require approval if REGISTER_APPROVE is selected.
You may prohibit logged in users from creating additional accounts by setting 'block_extended_register' to true.
These will still require approval if the registration policy is set to *require approval*
You may prohibit logged in users from creating additional accounts by setting *block multible registrations* to true.
Default is false.
Config:
### File upload
$a->config['system']['block_extended_register'] = true;
#### Maximum Image Size
Security settings
---
Maximum size in bytes of uploaded images.
The default is set to 0, which means no limits.
###Verify SSL Certitificates
### Policies
By default Friendica allows SSL communication between websites that have "self-signed" SSL certificates.
For the widest compatibility with browsers and other networks we do not recommend using self-signed certificates, but we will not prevent you from using them.
SSL encrypts all the data transmitted between sites (and to your browser). This allows you to have completely encrypted communications, and also protect your login session from hijacking.
Self-signed certificates can be generated for free, without paying top-dollar for a website SSL certificate.
However these aren't looked upon favourably in the security community because they can be subject to so-called "man-in-the-middle" attacks.
If you wish, you can turn on strict certificate checking.
This will mean you cannot connect (at all) to self-signed SSL sites.
#### Global Directory
Config:
This configures the URL to update the global directory, and is supplied in the default configuration.
The undocumented part is that if this is not set, the global directory is completely unavailable to the application.
This allows a private community to be completely isolated from the global network.
$a->config['system']['verifyssl'] = true;
#### Force Publish
Corporate/Edu enhancements
---
By default, each user can choose on their Settings page whether or not to have their profile published in the site directory.
This setting forces all profiles on this site to be listed in the site directory and there is no option provided to the user to change it.
Default is false.
###Allowed Friend Domains
Comma separated list of domains which are allowed to establish friendships with this site.
Wildcards are accepted.
(Wildcard support on Windows platforms requires PHP5.3).
By default, any (valid) domain may establish friendships with this site.
Config:
$a->config['system']['allowed_sites'] = "sitea.com, *siteb.com";
###Allowed Email Domains
Comma separated list of domains which are allowed in email addresses for registrations to this site.
This can lockout those who are not part of this organisation from registering here.
Wildcards are accepted.
(Wildcard support on Windows platforms requires PHP5.3).
By default, any (valid) email address is allowed in registrations.
Config:
$a->config['system']['allowed_email'] = "sitea.com, *siteb.com";
###Block Public
#### Block Public
Set to true to block public access to all otherwise public personal pages on this site unless you are currently logged in.
This blocks the viewing of profiles, friends, photos, the site directory and search pages to unauthorised persons.
@ -181,50 +106,152 @@ Unauthorised persons will also not be able to request friendship with site membe
Default is false.
Available in version 2.2 or greater.
Config:
#### Allowed Friend Domains
$a->config['system']['block_public'] = true;
Comma separated list of domains which are allowed to establish friendships with this site.
Wildcards are accepted.
(Wildcard support on Windows platforms requires PHP5.3).
By default, any (valid) domain may establish friendships with this site.
###Force Publish
This is useful if you want to setup a closed network for educational groups, cooperations and similar communities that don't want to commuicate with the rest of the network.
By default, each user can choose on their Settings page whether or not to have their profile published in the site directory.
This setting forces all profiles on this site to be listed in the site directory and there is no option provided to the user to change it.
Default is false.
#### Allowed Email Domains
Config:
Comma separated list of domains which are allowed in email addresses for registrations to this site.
This can lockout those who are not part of this organisation from registering here.
Wildcards are accepted.
(Wildcard support on Windows platforms requires PHP5.3).
By default, any (valid) email address is allowed in registrations.
$a->config['system']['publish_all'] = true;
### Advanced
###Global Directory
#### Proxy Configuration Settings
This configures the URL to update the global directory, and is supplied in the default configuration.
The undocumented part is that if this is not set, the global directory is completely unavailable to the application.
This allows a private community to be completely isolated from the global network.
If your site uses a proxy to connect to the internet, you may use these settings to communicate with the outside world.
The outside world still needs to be able to see your website, or this will not be very useful.
$a->config['system']['directory'] = 'http://dir.friendi.ca';
#### Network Timeout
Developer Settings
---
How long to wait on a network communication before timing out.
Value is in seconds.
Default is 60 seconds.
Set to 0 for unlimited (not recommended).
### Debugging
Most useful when debugging protocol exchanges and tracking down other communications issues.
#### UTF-8 Regular Expressions
Config:
During registrations, full names are checked using UTF-8 regular expressions.
This requires PHP to have been compiled with a special setting to allow UTF-8 expressions.
If you are completely unable to register accounts, set no_utf to true.
The default is set to false (meaning UTF8 regular expressions are supported and working).
$a->config['system']['debugging'] = true;
$a->config['system']['logfile'] = 'logfile.out';
$a->config['system']['loglevel'] = LOGGER_DEBUG;
#### Verify SSL Certitificates
Turns on detailed debugging logs which will be stored in 'logfile.out' (which must be writeable by the webserver).
LOGGER_DEBUG will show a good deal of information about system activity but will not include detailed data.
You may also select LOGGER_ALL but due to the volume of information we recommend only enabling this when you are tracking down a specific problem.
Other log levels are possible but are not being used at the present time.
By default Friendica allows SSL communication between websites that have "self-signed" SSL certificates.
For the widest compatibility with browsers and other networks we do not recommend using self-signed certificates, but we will not prevent you from using them.
SSL encrypts all the data transmitted between sites (and to your browser).
This allows you to have completely encrypted communications, and also protect your login session from hijacking.
Self-signed certificates can be generated for free, without paying top-dollar for a website SSL certificate.
However these aren't looked upon favourably in the security community because they can be subject to so-called "man-in-the-middle" attacks.
If you wish, you can turn on strict certificate checking.
This will mean you cannot connect (at all) to self-signed SSL sites.
Please be aware that turning on the logging can fill up the disk space on your server relatively quick.
You should take preventions with e.g. [logrotate](https://en.wikipedia.org/wiki/Log_rotation) or similar tools.
### Auto Discovered Contact Directory
###PHP error logging
### Performance
### Worker
### Relocate
## Users
This section of the panel let the admin control the users registered on the node.
If you have selected "Requires approval" for the *Register policy* in the general nodes configuration, new registrations will be listed at the top of the page.
There the admin can then approve or disapprove the request.
Below the new registration block the current accounts on the Friendica node are listed.
You can sort the user list by name, email, registration date, date of last login, date of last posting and the account type.
Here the admin can also block/unblock users from accessing the node or delete the accounts entirely.
In the last section of the page admins can create new accounts on the node.
The password for the new account will be send by email to the choosen email address.
## Plugins
This page is for selecting and configuration of extensions for Friendica which have to be placed into the `/addon` subdirectory of your Friendica installation.
You are presented with a long list of available addons.
The name of each addon is linked to a separate page for that addon which offers more informations and configuration possibilities.
Also shown is the version of the addon and an indicator if the addon is currently active or not.
When you update your node and the addons they may have to be reloaded.
To simplify this process there is a button at the top of the page to reload all active plugins.
## Themes
The Themes section of the admin panel works similar to the Plugins section but let you control the themes on your Friendica node.
Each theme has a dedicated suppage showing the current status, some information about the theme and a screen-shot of the Friendica interface using the theme.
Should the theme offer special settings, admins can set a global default value here.
You can activate and deactivate themes on their dedicated sub-pages thus making them available for the users of the node.
To select a default theme for the Friendica node, see the *Site* section of the admin panel.
## Additional Features
There are several optional features in Friendica.
Like the *dislike* button or the usage of a *richtext editor* for composing new postings.
In this section of the admin panel you can select a default setting for your node and eventually fix it, so users cannot change the setting anymore.
## DB Updates
Should the database structure of Friendica change, it will apply the changes automatically.
In case you are suspecious that the update might not have worked, you can use this section of the admin panel to check the situation.
## Inspect Queue
In the admin panel summary there are two numbers for the message queues.
The second number represents messages which could not be delivered and are queued for later retry.
If this number goes sky-rocking you might ask yourself which receopiant is not receiving.
Behind the inspect queue section of the admin panel you will find a list of the messages that could not be delivered.
The listing is sorted by the receipiant name so identifying potential broken communication lines should be simple.
These lines might be broken for various reasons.
The receiving end might be off-line, there might be a high system load and so on.
Don't panic!
Friendica will not queue messages for all time but will sort out *dead* nodes automatically after a while and remove messages from the queue then.
## Federation Statistics
The federation statistics page gives you a short summery of the nodes/servers/pods of the decentralized social network federation your node knows.
These numbers are not compleate and only contain nodes from networks Friendica federates directly with.
## Plugin Features
Some of the addons you can install for your Friendica node have settings which have to be set by the admin.
All those addons will be listed in this area of the admin panels side bar with their names.
## Logs
The log section of the admin panel is seperated into two pages.
On the first, following the "log" link, you can configure how much Friendica shall log.
And on the second you can read the log.
When you are using the default configuration for Apache, you should choose a name for the logfile ending in ``.log`` or ``.out``.
But don't call it ``friendica.log`` (see [issue 2209](https://github.com/friendica/friendica/issues/2209)).
There are five different log levels: Normal, Trace, Debug, Data and All.
Specifying different verbosities of information and data written out to the log file.
Normally you should not need to log at all.
The *DEBUG* level will show a good deal of information about system activity but will not include detailed data.
In the *ALL* level Friendica will log everything to the file.
But due to the volume of information we recommend only enabling this when you are tracking down a specific problem.
**The amount of data can grow the filesize of the logfile quickly**.
You should set up some kind of [log rotation](https://en.wikipedia.org/wiki/Log_rotation) to keep the log file from growing too big.
By default PHP warnings and error messages are supressed.
If you want to enable those, you have to activate them in the ``.htconfig.php`` file.
Use the following settings to redirect PHP errors to a file.
Config:
@ -235,11 +262,61 @@ Config:
ini_set('display_errors', '0');
This will put all PHP errors in the file php.out (which must be writeable by the webserver).
Undeclared variables are occasionally referenced in the program and therefore we do not recommend using E_NOTICE or E_ALL.
Undeclared variables are occasionally referenced in the program and therefore we do not recommend using `E_NOTICE` or `E_ALL`.
The vast majority of issues reported at these levels are completely harmless.
Please report to the developers any errors you encounter in the logs using the recommended settings above.
They generally indicate issues which need to be resolved.
If you encounter a blank (white) page when using the application, view the PHP logs - as this almost always indicates an error has occurred.
*Note*: PHP logging cannot be activated from the admin panel but has to be configured from the ``.htconfig.php`` file.
## Diagnostics
In this section of the admin panel you find two tools to investigate what Friendica sees for certain ressources.
These tools can help to clarify communication problems.
For the *probe address* Friendica will display information for the address provided.
With the second tool *check webfinger* you can request information about the thing identified by a webfinger (`someone@example.com`).
# Exceptions to the rule
There are four exceptions to the rule, that all the config will be read from the data base.
These are the data base settings, the admin account settings, the path of PHP and information about an eventual installation of the node in a sub-directory of the (sub)domain.
## DB Settings
With the following settings, you specify the data base server, the username and passwort for Friendica and the database to use.
$db_host = 'your.db.host';
$db_user = 'db_username';
$db_pass = 'db_password';
$db_data = 'database_name';
## Admin users
You can set one, or more, accounts to be *Admin*.
By default this will be the one account you create during the installation process.
But you can expand the list of email addresses by any used email address you want.
Registration of new accounts with a listed email address is not possible.
$a->config['admin_email'] = 'you@example.com, buddy@example.com';
## PHP Path
Some of Friendicas processes are running in the background.
For this you need to specify the path to the PHP binary to be used.
$a->config['php_path'] = '{{$phpath}}';
## Subdirectory configuration
It is possible to install Friendica into a subdirectory of your webserver.
We strongly discurage you from doing so, as this will break federation to other networks (e.g. Diaspora, GNU Socia, Hubzilla)
Say you have a subdirectory for tests and put Friendica into a further subdirectory, the config would be:
$a->path = 'tests/friendica';
## Other exceptions
Furthermore there are some experimental settings, you can read-up in the [Config values that can only be set in .htconfig.php](help/htconfig) section of the documentation.