Monolog Viewer

A viewer to nicely display log files generated by Monolog.

Mockup Credits

Installation & Setup

1. Download Composer
2. Execute php composer.phar create-project syonix/monolog-viewer install-directory/ (make sure to replace install-directory with the name of the directory you want to install monolg viewer into.
3. Upload the files to your webspace
4. Make sure PHP has write access to the directory /app/config/secure - This is where the password hash will be stored (see below). Write access can be achieved by either changing the folder's chmod to 777 (less secure) or making sure that the owner of the file is the same as the one the server is using.
5. Create a configuration file (rename or copy the config_example.yaml).
6. Open Monolog Viewer in the browser
7. Enter a password of your choice twice and click "Create login".
8. Done. You can now log in and use your installation of Monolog Viewer

MonologViewer requires PHP 5.5 or higher. If you are using Apache, make sure to enable the mod_rewrite module.

For configuration under nginx please refer to issue #14

Configuration

The config file is a YAML file containing the paths to your log files. Log files can be grouped. These groups are called clients, but you could also see them as sites or whatever makes sense to you.

To set up log files, make sure to fill in the config file following this structure:

debug: false
timezone: "Europe/Zurich"
dateFormat: d.m.Y, H:i:s
logs:
    Demo:
        Demo-Log-File:
            type: local
            path: /path/to/your/monolog-viewer/installation/test/SyonixLogViewer/res/test.log
    Acme:
        Acme App:
            type: ftp
            host: acme.com
            username: logs
            password: $upersecur3
            path: app/logs/prod.log

The field type determines how the app will try to access the log file. For this, Flysystem is used. Currently implemented are local and ftp, but any other Flysystem Adapter can easily be added to the Syonix\LogViewer\LogFile.php constructor. Feel free to contribute.

Note: If your config.yaml is invalid, Monolog Viewer will display an error message. Also, if a client does not contain any logs, the client will not be listed in the navigation. If your config file is invalid and you don't know why, check if there are any tab characters in it.

Configuration values

The following configuration values are available:

Name	Type	Description
timezone	string	Timezone string according to PHP Manual.
date_format	string	Date format for log entries according to the Angular JS Manual.
logs	array	List of all log files, categorized by "clients" (see above)
display_logger	boolean	Turn log channel (logger) display in log view on or off

Flysystem Types

local

Accesses log files on the server's local file system.

Config values	Description
path	The absolute file path. (You can use PHP's realpath() to get the absolute path of a file.)

ftp

Accesses log files via FTP.

Config values	Description
host	The host to connect to (e.g. ftp.acme.com)
username	The ftp user to connect with
password	The ftp user's password.
path	The file path, relative to the FTP user's root directory.
port	The port to use for connecting (optional, default: 21)
passive	Use a passive connection (optional, default: true)
ssl	Use an encrypted connection / FTP over SSL (optional, default: false)
timeout	The default timeout (optional, default: 30)

sftp

Accesses log files via SFTP.

Config values	Description
host	The host to connect to (e.g. ftp.acme.com)
username	The ftp user to connect with
password	The ftp user's password.
port	The port to use for connecting (optional, default: 21)
passive	Use a passive connection (optional, default: true)
ssl	Use an encrypted connection / FTP over SSL (optional, default: false)
timeout	The default timeout (optional, default: 30)
private_key	Path to the client private key (optional, no default)

All types

Config values	Description
pattern	A regex for a custom log line pattern. For example if your log lines don't end in [] {} you could use /\[(?P<date>.*)\] (?P<logger>\w+).(?P<level>\w+): (?P<message>[^\[\{]+)/

Password management

My goal was to keep this tool so simple, that it can be installed on any shared hosting. Therefore I decicded not to use a database to store the password. Instead it is saved within a folder that is protected by a .htaccess file and therefore not accessible by the public.

The only way to get the password hash is via FTP and even if someone gets the file, it is still hashed using PHPs password_hash() function. If you use a secure password, this is pretty safe.

Multiple users might be implemented in the future.

Change password

To change your password, simply delete the /app/config/secure/passwd file and open Monolog Viewer to set a new password.

Mobile devices

The App is fully optimized for tablets and smart phones and can even be installed to the home screen on iOS devices. It then works like a native app and features an app icon as well as a beautiful splash screen.

Enforcing HTTPS

This should be done on a server configuration level. You could for example add this to the .htaccess file, right below RewriteEngine On:

RewriteCond %{HTTPS} !=on
RewriteRule ^ https://%{HTTP_HOST}%{REQUEST_URI} [L,R=301]