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Interact with shell locally or over different connection types (telnet, ssh, serial, adb)

Project description

citizenshell is (or rather will be) a python library allowing to execute shell commands either locally or remotely over several protocols (telnet, ssh, serial or adb) using a simple and consistent API. This library is compatible with both python 2 (2.7) and 3 (>=3.4) as well as with PyPy. For now, it focuses on POSIX platforms like Linux and MacOS, but may be extended to work to Windows based platform in the future. It is distributed under MIT license.

Installing

citizenshell can simply installed using pip install citizenshell

Examples

LocalShell

you can use the built-in sh command for simple commands:

from citizenshell import sh

assert sh("echo Hello World") == "Hello World"

you can instanciate a LocalShell for more complex cases:

from citizenshell import LocalShell

shell = LocalShell(GREET="Hello")
assert shell("echo $GREET $WHO", WHO="Citizen") == "Hello Citizen"

you can also iterate over stdout:

from citizenshell import LocalShell

shell = LocalShell()
result = [int(x) for x in shell("""
    for i in 1 2 3 4; do
        echo $i;
    done
""")]
assert result == [1, 2, 3, 4]

or you can extract stdout, stderr and exit code seperately:

from citizenshell import LocalShell

shell = LocalShell()
result = shell(">&2 echo error && echo output && exit 13")
assert result.out == ["output"]
assert result.err == ["error"]
assert result.xc == 13

TelnetShell

you can instanciate the TelnetShell for shell over telnet:

from citizenshell import TelnetShell

shell = TelnetShell(hostname="acme.org", username="john", password="secretpassword")
assert shell("echo Hello World") == "Hello World"

you can then do eveything you can do with a LocalShell.

SecureShell

you can instanciate the SecureShell for shell over SSH:

from citizenshell import SecureShell

shell = SecureShell(hostname="acme.org", username="john", password="secretpassword")
assert shell("echo Hello World") == "Hello World"

you can then do eveything you can do with a LocalShell. Beware that some SSH servers refuse to set environment variable (see documentation of AcceptEnv of sshd_config and documentation of update_environment of paramiko’s ``Channel` class <http://docs.paramiko.org/en/2.4/api/channel.html>`__) and that will fail silently.

AdbShell

you can instanciate the AdbShell for shell over ADB:

from citizenshell import AdbShell

shell = AdbShell(hostname="acme.org", username="john", password="secretpassword")
assert shell("echo Hello World") == "Hello World"

you can then do eveything you can do with a LocalShell.

SerialShell

you can instanciate the SerialShell for shell over serial line:

from serial import EIGHTBITS, PARITY_NONE
from citizenshell import SerialShell

shell = SerialShell(port="/dev/ttyUSB3", username="john", password="secretpassword", baudrate=115200, parity=PARITY_NONE, bytesize=EIGHTBITS)
assert shell("echo Hello World") == "Hello World"

you can then do eveything you can do with a LocalShell.

Shell

you can also obtain shell objects by URI using the Shell function:

from citizenshell import Shell

localshell = Shell()
telnetshell = Shell("telnet://john:secretpassword@acme.org:1234")
secureshell = Shell("ssh://john:secretpassword@acme.org:1234")
adbshell = Shell("adb://myandroiddevice:5555")
serialshell = Shell("serial://jogn:secretpassword@/dev/ttyUSB3?baudrate=115200")

you can mix and match betweens providing arguments in the URI or via kwargs:

from citizenshell import Shell

localshell = Shell()
telnetshell = Shell("telnet://john@acme.org", password="secretpassword", port=1234)
serialshell = Shell("serial://jogn:secretpassword@/dev/ttyUSB3", baudrate=115200)

you can then use the shell objects as you would any other.

Project details


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