Client-Server command line application for share files, similar to FTP but more powerful; written in Python 3.6+
easyshare is a client-server command line application written in Python for transfer files between network hosts.
It is highly inspired by FTP, but aim to be easier and faster to use.
For example, easyshare supports automatic discovery of the sharings of the network, therefore, from the client you can download entire directories just by giving the name you assigned to them from the server side.
Requires at least Python 3.6.
On Linux, you can install it with pip:
sudo pip install easyshare
This will install both es (client) and esd (server).
WHAT IT LOOKS LIKE
A picture is worth a thousand words
esd [OPTION]... [SHARING [SHARING_NAME] [SHARING_OPTION]...]
For share stuff, you have to start an easyshare daemon (esd).
There are basically two ways for create sharings.
- By providing the path of the file/directory to share in the command line as SHARING
- By creating a configuration file and specifying it with the option -c config
The option 1. should be preferred for an easy one-shot sharing of a file or directory, since doesn't need the creation a configuration file, but has the limit that only a file or folder can be shared.
If given, SHARING must be a valid path to a local file or directory. SHARING_NAME is an optional name to assign to the sharing, as it will be seen by clients. If not given, the name of the file/directory is used instead. Currently the only supported SHARING_OPTION is the read-only flag, which can be enabled with -r, and denies any write operation on a directory sharing.
-a, --address address server address (default is primary interface) -c, --config config_path load settings from a esd configuration file -d, --discover-port port port used to listen to discovery messages; 1 disables discovery (default is 12021) -e, --rexec enable rexec (remote execution) -h, --help show this help -n, --name name server name (default is server hostname) --no-color don't print ANSI escape characters -P, --password password server password, plain or hashed with es-tools -p, --port port server port (default is 12020) --ssl-cert cert_path path to an SSL certificate --ssl-privkey privkey_path path to an SSL private key -t, --trace 0_or_1 enable/disable tracing -v, --verbose level set verbosity level -V, --version show the easyshare version
The server can be configured either with a configuration file (2.) or by giving esd the options you need. The command line arguments have precedence over the corresponding setting of the configuration file (i.e. if you specify an option in both the configuration file and as an argument, the argument will be taken into account).
The configuration file is composed of two parts.
- Global section
- Sharings sections
Each line of a section has the form <key>=<value>. The available <key> of the global section are:
address discover_port name no_color password port rexec ssl ssl_cert ssl_privkey trace verbose
The available <key> of the sharings sections are:
The first lines of the configuration file belongs to the global section by default. Each sharing section begins with "[SHARING_NAME]". If you omit the SHARING_NAME, the name of the shared file or directory will be used instead.
See the example of the configuration file below for more details.
- Share a file
- Share a directory, assigning it a name
esd /tmp/shared_directory shared
- Share multiples directories, using a configuration file
esd -c /home/user/.easyshare/esd.conf
CONFIGURATION FILE EXAMPLE
# esd.conf # ===== SERVER SETTINGS ===== name=stefano-arch password=aSecurePassword port=12020 discover_port=12019 ssl=true ssl_cert="/tmp/cert.pem" ssl_privkey="/tmp/privkey.pem" ssl_privkey="/tmp/privkey.pem" rexec=false verbose=4 trace=1 # ===== SHARINGS ===== [download] path="/home/stefano/Downloads" [shared] path="/tmp/shared" readonly=true # Automatic sharing name  path="/tmp/afile"
es [OPTION]... [COMMAND [COMMAND_OPTIONS]]
For fetch stuff shared with esd, you have to start an easyshare client (es).
If no COMMAND is given, the interactive console is started, from which you can use any command.
If COMMAND is a valid command, it is executed and the process quits unless the command is open.
-d, --discover-port port port used for broadcast discovery messages -h, --help show this help --no-color don't print ANSI escape characters -t, --trace 0_or_1 enable/disable tracing -v, --verbose level set verbosity level -V, --version show the easyshare version -w, --discover-wait seconds time to wait for discovery responses
From within the es console, type "help <command>" for the full documentation of a command.
The available commands (either from the command line or from the interactive console) are the following:
help show this help exit, quit, q exit from the interactive shell trace, t enable/disable packet tracing verbose, v change verbosity level
The help command should really be used since its quite complete.
Connection establishment commands
scan, s scan the network for easyshare servers connect, c connect to a remote server disconnect disconnect from a remote server open, o open a remote sharing (eventually discovering it) close close the remote sharing
The most straightforward way to establish a connection is open since only requires you to know the name assigned to the sharing.
scan can be used for discover the sharings of the network (for figure out the name to give to open).
Tipically you won't need to use connect explicitly since the server connection is automatically established, if the sharing name given to open is valid and can be found. Although there might be cases in which an explicit connect is needed, for example for connect to a server for which the discovery cannot be performed (i.e. a server not on the same network of the client) or if you want to connect a server without sharings (e.g. for execute commands remotely via rexec).
get, g get files and directories from the remote sharing put, p put files and directories in the remote sharing
get is used for:
- Download files or directories from a "directory sharing"
- Download a shared file ("file sharing")
put is used for:
- Upload files or directories to a "directory sharing"
pwd show the name of current local working directory ls list local directory content l alias for ls -la tree list local directory contents in a tree-like format cd change local working directory mkdir create a local directory cp copy files and directories locally mv move files and directories locally rm remove files and directories locally exec, : execute an arbitrary command locally shell, sh start a local shell
You should really be familiar with these commands since behave quite similar to the Linux counterpart.
The command exec (which can be shortened with :) can be useful for execute arbitrary commands without the need of open a new terminal.
rpwd show the name of current remote working directory rls list remote directory content rl alias for rls -la rtree list remote directory contents in a tree-like format rcd change remote working directory rmkdir create a remote directory rcp copy files and directories remotely rmv move files and directories remotely rrm remove files and directories remotely rexec, :: execute an arbitrary command remotely (disabled by default) rshell, rsh start a remote shell (disabled by default)
These are the counterparts of the Local commands that work on the remote sharing instead of the local machine (i.e. you have to establish a connection to a "directory sharing" before use those).
The command rexec (which can be shortened with ::) is a really powerful command
that basically gives you arbitrary command execution on the remote machine
(technically not a shell, but not so far).
For this reason, it is obviously disabled by default, but you can enable it with the option -e if you are really confident that nobody with bad intentions will use it (use a strong server password, by the way).
Server information commands
info, i show information about the remote server list list the sharings of the remote server ping test the connection with the remote server
info can be used for fetch information of the remote server (e.g. name, address, ports, SSL certificate, type of authentication, available sharings).
These are only examples, see the help section of each command for known exactly what you can do.
- Start the interactive shell (from which you can use any command)
- Scan the network for easyshare sharings
es scan alice-arch (192.168.1.105:12020) DIRECTORIES - shared - tmp
- Open a sharing by name (implicit discovery and server connection) and start the interactive shell
es open shared alice-arch.shared:/ - /tmp> ...
- Get the content of a sharing by name
es get shared GET shared/f1 [===================] 100% 745KB/745KB GET outcome: OK Files 1 (745KB) Time 1s Avg. speed 1MB/s
- Open a sharing by name and put some files into it
es /tmp> open shared alice-arch.shared:/ - /tmp> rls f1 f2 alice-arch.shared:/ - /tmp> put /tmp/afile PUT afile [===================] 100% 745KB/745KB PUT outcome: OK Files 1 (745KB) Time 1s Avg. speed 1MB/s alice-arch.shared:/ - /tmp> rls f1 f2 afile
- Connect to a server by specific address and port, then list the available sharings
es connect 192.168.1.105:12020 alice-arch:/ - /tmp> list DIRECTORIES - shared - tmp FILES - zshrc
- See content of the remote sharing, then move some files
es /tmp> open shared alice-arch.shared:/ - /tmp> rtree |-- dir | |-- f3 | +-- f4 |-- f1 +-- f2 alice-arch.shared:/ - /tmp> rmv f1 f2 dir alice-arch.shared:/ - /tmp> rtree +-- dir |-- f1 |-- f2 |-- f3 +-- f4 alice-arch.shared:/ - /tmp> rcd dir alice-arch.shared:/dir - /tmp> rls f1 f2 f3 f4
- Arbitrary local command execution
es /tmp> cd d /tmp/d> ls f0 /tmp> :touch f1 f0 f1
- Arbitrary remote command execution (DISABLED BY DEFAULT)
es /tmp> connect alice-arch alice-arch:/ - /tmp> ::whoami alice
es-tools is a little script that can help administrators of easyshare servers.
Currently in two ways:
- Creating a default configuration file
- Generating an hash of a password to use in the esd configuration file (preferred over a plain password)
If neither -c nor -p is given, an interactive script is started and you will be asked what to do.
-c, --generate-config generate default esd.conf file -h, --help show this help -p, --hash-password <password> generate an hash of the password -V, --version show the easyshare version
Tests can be run with:
For run tests with logging enabled
tox -- -s
Actually there are still many things to write tests for...
- Testing on Windows
- find and rfind command that finds files by name and tag those with incremental IDs (1, 2) which can be used in other command (something like $1, $2)
- shell and rshell which implement command execution through a pty (enhanced version of exec/rexec)
- Behind NAT section in README (open two external ports internally forwarded to 12020 and 12021)
- Add unit tests
- Handle addresses instead of numeric IPs
- Do not transfer hidden files by default (add a -a option for transfer those) LICENSE
Easyshare is MIT licensed.
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