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dropbox-like file synchronization for your own server (proof of concept)
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dbc - dropbox-like file synchronization for your own server this is an attempt to create a file synchronization tool that mimes the behavior of dropbox. dbc synchronizes a specified folder on your system with a folder on your server. your local folder is being watched for changes by the dbc client. everytime you add, delete or modify files, the changes are synchronized with the server. the dbc client can run on multiple systems simultaneously, each of them watching a local folder. changes made on one system are distributed to all connected clients on the network. this is a PROOF OF CONCEPT i wrote for myself to learn about this kind of file synchronization. this software is far from being complete. it is poorly tested and may lead to data loss. i am sure there are some major security glitches. use at your own risk. :: requirements :: * client: php-cli 5.3 with modules curl, pcntl, posix * server: apache with php 5.3 tested on osx 10.7 and debian linux. the php build that ships with osx does not provide pcntl_fork, so if you want to use dbc client on osx, you will have to build php by hand. i recommend using macports: * sudo port selfupdate && sudo port upgrade outdated * sudo port install php5 +no_web +pear * sudo port install php5-pcntl php5-posix php5-curl on linux (debian, ubuntu): * sudo apt-get update && sudo apt-get upgrade * sudo apt-get install php5-cli php5-curl :: server configuration :: copy the contents of this folder to a new folder (let's call it dbc) to your "htdocs" folder of your server. rename the file "serverconfig.sample.php" to "serverconfig.php" and edit the file. set the variable "baseDir" to the directory, where the data should be stored, e.g. "/opt/dbcdata/". the folder must be readable and writeable by the apache user. create the base-dir with "mkdir /opt/dbcdata/". now use the commandline tool dbcserver.php to create a new user: dbcserver.php adduser peter secretpassword this will create the user "peter" with the password "secretpassword". if you access the server url (e.g. http://example.com/dbc/) you should see the message "SERVER_OK". security considerations: you should use ssl. you should set up a dedicated user and group for dbc. use at your own risk. the server only requires the files index.php, Server*, FileList* and serverconfig.php. delete all other files. :: client configuration :: start the client using the commandline client dbc.php: dbc.php /home/peter/syncfolder the second parameter is the folder you want to watch. if you want to initialize a new folder, you must specify a folder that does not exist. the client will ask for the server url (e.g. http://example.com/dbc/server), and username and password. after this, you should be able to use your syncfolder. quit the client with ctrl+c. :: files :: dbc.php : dbc commandline tool for the Client Client*.class.php : Client classes used by dbc.php index.php : index document for apache that responds to client requests dbcserver.php : dbc commandline tool for the Server Server*.class.php : Server classes used by index.php FileList.class.php : filelist class used by client and server serverconfig.sample.php : server configuration file, edit and move to serverconfig.php tests/ : folder with some unit tests for development -- by sebastian volland