- cleaned class argparser
- commented and cleaned asrc-server.py - renamed includes/content.py to includes/comm.py - renamed class content to comm - made some vars (aliases, server_version, protocol_version, verbiosity) global in class comm - added init() to class comm for setting lobal vars - moved motd() from asrc-server-py to class comm - conformed comm.motd() to reference - added comm.header() for building the headers - added includes/statuscodes.py with class statuscodes with dict description for storing the status codes and their description - added docstrings
This commit is contained in:
parent
fbb4653740
commit
1207c6b225
6 changed files with 306 additions and 297 deletions
364
asrc-server.py
364
asrc-server.py
|
@ -25,7 +25,7 @@
|
|||
# aSRC (Aliased Server Remote Control)
|
||||
# - SERVER -
|
||||
#
|
||||
# program version: 0.0.0.20130424
|
||||
# program version: 0.0.0.20130426
|
||||
# protocol version: 0.2.20130423
|
||||
#
|
||||
#
|
||||
|
@ -35,243 +35,175 @@
|
|||
import sys, os, socket, socketserver, threading, time
|
||||
|
||||
|
||||
def motd():
|
||||
return MOTD
|
||||
|
||||
|
||||
#def content(client_address, data):
|
||||
#ret = ""
|
||||
|
||||
#ret = ret +\
|
||||
#"{BEGIN}\n"\
|
||||
#"asrcp" + ProtocolVersion + "\n"
|
||||
|
||||
## Look if the received message is an
|
||||
## valid alias or a predefined command
|
||||
|
||||
## if it's 'version', return the server and protocol version
|
||||
#if data == "version":
|
||||
|
||||
#if VERBOSITY >= 2: print("Got valid service command from"
|
||||
#+ str(client_address) + ": ", data)
|
||||
|
||||
#ret = ret +\
|
||||
#"202 Valid Service Command\n"\
|
||||
#"002 Version\n"\
|
||||
#"ServerVersion:" + ServerVersion + "\n"\
|
||||
#"ProtocolVersion:" + ProtocolVersion + "\n"
|
||||
|
||||
## if it's 'help', give a little help
|
||||
#elif data == 'help':
|
||||
|
||||
#if VERBOSITY >= 2: print("Got valid command from"
|
||||
#+ str(client_address) + ": ", data)
|
||||
|
||||
## send status code
|
||||
#ret = ret + "202 Valid Service Command\n\n"
|
||||
|
||||
## send the list of aliases
|
||||
#ret = ret + "Aviable aliases:\n"
|
||||
#for i in aliases.keys():
|
||||
#ret = ret + str(i) + "\n"
|
||||
|
||||
## if it's a valid userdefined command
|
||||
#elif data in aliases:
|
||||
|
||||
## send status code
|
||||
#ret = ret + "201 Valid Command\n\n"
|
||||
|
||||
## ohmagawd! a debug message!!1!
|
||||
#if VERBOSITY >= 2: print("Got valid command from"
|
||||
#+ str(client_address) + ": ", data)
|
||||
|
||||
## execute the aliased command
|
||||
#g_dict, l_dict = {}, {}
|
||||
#exec(str(aliases[data]), g_dict, l_dict)
|
||||
|
||||
## send may contain data to send to the client
|
||||
#if l_dict["send"]:
|
||||
#content = str(l_dict["send"]).replace('{', '\{')
|
||||
#content = content.replace('}', '\}')
|
||||
|
||||
#ret = ret + content + "\n"
|
||||
|
||||
## ALL IS LOST!!1! this has to be invalid!
|
||||
#else:
|
||||
|
||||
## send status code
|
||||
#ret = ret + "203 Invalid Command\n"
|
||||
|
||||
#if VERBOSITY >= 2: print("Got invalid command from",
|
||||
#str(client_address), ": ", data)
|
||||
|
||||
#ret = ret + "{END}\n"
|
||||
|
||||
#return ret
|
||||
|
||||
|
||||
class ThreadedRequestHandler(socketserver.StreamRequestHandler):
|
||||
|
||||
def handle(self):
|
||||
|
||||
# Set time for timeout in seconds
|
||||
self.timeout = TIMEOUT
|
||||
|
||||
# Print a line with the adress of the connected client
|
||||
if VERBOSITY >=3:
|
||||
print("Client connected: " + str(self.client_address))
|
||||
|
||||
# send header line 1
|
||||
self.request.sendall(bytes
|
||||
("asrpc " + ProtocolVersion + "\n", ENCODING))
|
||||
|
||||
# send motd
|
||||
self.request.sendall(bytes(motd() + "\n", ENCODING))
|
||||
|
||||
# Receive data
|
||||
self.data = str(self.rfile.readline().strip(), ENCODING)
|
||||
|
||||
# content handler
|
||||
self.request.sendall(bytes(
|
||||
content.handler(str(self.client_address), self.data, aliases,
|
||||
ServerVersion, ProtocolVersion, VERBOSITY), ENCODING))
|
||||
|
||||
def handle(self):
|
||||
"""
|
||||
Handles incoming connections
|
||||
"""
|
||||
|
||||
# Set time for timeout in seconds
|
||||
self.timeout = TIMEOUT
|
||||
|
||||
# Print a line with the adress of the connected client
|
||||
if VERBOSITY >=3:
|
||||
print("Client connected: " + str(self.client_address))
|
||||
|
||||
# send motd
|
||||
self.request.sendall(comm.motd(MOTD) + "\n", ENCODING))
|
||||
|
||||
# Receive data
|
||||
self.data = str(self.rfile.readline().strip(), ENCODING)
|
||||
|
||||
# content handler
|
||||
self.request.sendall(bytes(
|
||||
comm.handler(str(self.client_address), self.data), ENCODING))
|
||||
|
||||
|
||||
class ThreadedTCPServer(socketserver.ThreadingMixIn, socketserver.TCPServer):
|
||||
pass
|
||||
pass
|
||||
|
||||
|
||||
def main():
|
||||
global VERBOSITY, HOST, PORT, TIMEOUT, ENCODING
|
||||
|
||||
from include import argparser, content
|
||||
|
||||
parser = argparser
|
||||
args = parser.parse(ServerVersion, ProtocolVersion)
|
||||
|
||||
if os.path.exists("pid"):
|
||||
if args.delete_pid_file: os.remove("pid")
|
||||
elif args.allow_multiple_instances: pass
|
||||
else:
|
||||
print(
|
||||
"\npid file already exists\n"\
|
||||
"If the server didn't shut down correctly, just delete this file "\
|
||||
"or pass -n\n"\
|
||||
"If you want to start multiple instances, pass -m\n")
|
||||
return 1
|
||||
|
||||
print(args)
|
||||
|
||||
if args.host: HOST = args.host
|
||||
if args.port: PORT = args.port
|
||||
if args.timeout: TIMEOUT = args.timeout
|
||||
if args.encoding: ENCODING = args.encoding
|
||||
if args.verbosity: VERBOSITY = args.verbosity
|
||||
|
||||
# write pid file
|
||||
pidf = open("pid", 'w')
|
||||
pidf.write(str(os.getpid()))
|
||||
pidf.close()
|
||||
|
||||
print("aSRC Server\n"\
|
||||
"Server version: " + ServerVersion + "\n"\
|
||||
"Protocol version: " + ProtocolVersion + "\n\n"\
|
||||
"To stop the server, press Ctrl-C\n")
|
||||
|
||||
try:
|
||||
if VERBOSITY >= 1: print("Initializing server...")
|
||||
# Create server
|
||||
server = ThreadedTCPServer((HOST, PORT), ThreadedRequestHandler)
|
||||
|
||||
if VERBOSITY >= 1: print("Starting server on",
|
||||
server.server_address[0], "port", server.server_address[1], "...")
|
||||
# Start a thread with the server -- that thread will then start one
|
||||
# more thread for each request
|
||||
ServerThread = threading.Thread(target = server.serve_forever)
|
||||
|
||||
# Exit the server thread when the main thread terminates
|
||||
ServerThread.daemon = True
|
||||
ServerThread.start()
|
||||
|
||||
while True:
|
||||
time.sleep(10)
|
||||
|
||||
except KeyboardInterrupt:
|
||||
print("\nGot Ctrl-C, shutting down server...")
|
||||
|
||||
try:
|
||||
server.shutdown()
|
||||
os.remove("pid")
|
||||
except: print("Failed to shutdown server correctly, "\
|
||||
"socket may be still in use or wasn't even started:",
|
||||
sys.exc_info())
|
||||
#except:
|
||||
# print("\nAn error occured:\n", sys.exc_info(), "\n")
|
||||
|
||||
if VERBOSITY >= 3: input("Press Enter to continue\n")
|
||||
return 0
|
||||
# import global settings
|
||||
global VERBOSITY, HOST, PORT, TIMEOUT, ENCODING
|
||||
|
||||
from include import argparser, comm
|
||||
|
||||
comm.init(ServerVersion, ProtocolVersion, VERBOSITY, aliases)
|
||||
|
||||
# parse arguments
|
||||
parser = argparser
|
||||
args = parser.parse(ServerVersion, ProtocolVersion)
|
||||
|
||||
# look for pid file
|
||||
if os.path.exists("pid"):
|
||||
# remove, ...
|
||||
if args.delete_pid_file: os.remove("pid")
|
||||
# ... ignore ...
|
||||
elif args.allow_multiple_instances: pass
|
||||
# ... or exit
|
||||
else:
|
||||
print(
|
||||
"\npid file already exists\n"\
|
||||
"If the server didn't shut down correctly, "\
|
||||
"just delete this file or pass -n\n"\
|
||||
"If you want to start multiple instances, pass -m\n")
|
||||
return 1
|
||||
|
||||
# set settings if command line options are given
|
||||
if args.host: HOST = args.host
|
||||
if args.port: PORT = args.port
|
||||
if args.timeout: TIMEOUT = args.timeout
|
||||
if args.encoding: ENCODING = args.encoding
|
||||
if args.verbosity: VERBOSITY = args.verbosity
|
||||
|
||||
# write pid file
|
||||
pidf = open("pid", 'w')
|
||||
pidf.write(str(os.getpid()))
|
||||
pidf.close()
|
||||
|
||||
print("aSRC Server\n"\
|
||||
"Server version: " + ServerVersion + "\n"\
|
||||
"Protocol version: " + ProtocolVersion + "\n\n"\
|
||||
"To stop the server, press Ctrl-C\n")
|
||||
|
||||
try:
|
||||
if VERBOSITY >= 1: print("Initializing server...")
|
||||
# Create server
|
||||
server = ThreadedTCPServer((HOST, PORT), ThreadedRequestHandler)
|
||||
|
||||
if VERBOSITY >= 1: print("Starting server on",
|
||||
server.server_address[0], "port", server.server_address[1], "...")
|
||||
# Start a thread with the server -- that thread will then start one
|
||||
# more thread for each request
|
||||
ServerThread = threading.Thread(target = server.serve_forever)
|
||||
|
||||
# Exit the server thread when the main thread terminates
|
||||
ServerThread.daemon = True
|
||||
ServerThread.start()
|
||||
|
||||
|
||||
while True:
|
||||
time.sleep(10)
|
||||
|
||||
# exit if Ctrl-C is pressed
|
||||
except KeyboardInterrupt:
|
||||
print("\nGot Ctrl-C, shutting down server...")
|
||||
|
||||
try:
|
||||
server.shutdown()
|
||||
os.remove("pid")
|
||||
except: print("Failed to shutdown server correctly, "\
|
||||
"socket may be still in use or wasn't even started:",
|
||||
sys.exc_info())
|
||||
#except:
|
||||
# print("\nAn error occured:\n", sys.exc_info(), "\n")
|
||||
|
||||
if VERBOSITY >= 3: input("Press Enter to continue\n")
|
||||
return 0
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
|
||||
ServerVersion = "0.0.0"
|
||||
ProtocolVersion = "0.2"
|
||||
|
||||
|
||||
##############
|
||||
# SETTINGS #
|
||||
##############
|
||||
|
||||
# IP or hostname (use 0.0.0.0 for all interfaces) and port, on which
|
||||
# the server should listen
|
||||
HOST = '127.0.0.1'
|
||||
PORT = 24642
|
||||
|
||||
# Timeout of a connection in seconds - still doesn't work obviously...
|
||||
TIMEOUT = 15
|
||||
|
||||
# Encoding to be used when communicating with a client
|
||||
ENCODING = 'utf-8'
|
||||
|
||||
# Dictionary of aliases. Use python syntax. You can use
|
||||
# the variable send for text to send to the client.
|
||||
#
|
||||
# Shell commands can be executed with:
|
||||
# import subprocess
|
||||
# send = subprocess.check_output(["command", "arg", "somemorearg"])
|
||||
#
|
||||
# You don't have to include sys, os, socket, socketserver,
|
||||
# threading and time, through they are included already.
|
||||
aliases = dict(
|
||||
who = '''
|
||||
|
||||
ServerVersion = "0.0.0"
|
||||
ProtocolVersion = "0.2"
|
||||
|
||||
|
||||
##############
|
||||
# SETTINGS #
|
||||
##############
|
||||
|
||||
# IP or hostname (use 0.0.0.0 for all interfaces) and port, on which
|
||||
# the server should listen
|
||||
HOST = '127.0.0.1'
|
||||
PORT = 24642
|
||||
|
||||
# Timeout of a connection in seconds - still doesn't work obviously...
|
||||
TIMEOUT = 15
|
||||
|
||||
# Encoding to be used when communicating with a client
|
||||
ENCODING = 'utf-8'
|
||||
|
||||
# Dictionary of aliases. Use python syntax. You can use
|
||||
# the variable send for text to send to the client.
|
||||
#
|
||||
# Shell commands can be executed with:
|
||||
# import subprocess
|
||||
# send = subprocess.check_output(["command", "arg", "somemorearg"])
|
||||
#
|
||||
# You don't have to include sys, os, socket, socketserver,
|
||||
# threading and time, through they are included already.
|
||||
aliases = dict(
|
||||
who = '''
|
||||
import subprocess
|
||||
send = subprocess.check_output(["whoami"])
|
||||
''',
|
||||
where = '''
|
||||
where = '''
|
||||
import subprocess
|
||||
send = subprocess.check_output(["pwd"])
|
||||
''',
|
||||
uname = '''
|
||||
uname = '''
|
||||
import os
|
||||
send = os.uname()
|
||||
''',
|
||||
date = '''
|
||||
date = '''
|
||||
import subprocess
|
||||
send = subprocess.check_output(["date"])
|
||||
''',
|
||||
ping_fanir = '''
|
||||
ping_fanir = '''
|
||||
import subprocess
|
||||
send = subprocess.check_output(["ping", "-c 2", "fanir.de"])
|
||||
''')
|
||||
|
||||
# This is sent to the client after the connection is established
|
||||
MOTD = "Welcome! This is only a test server, for developing purposes.\n"\
|
||||
"Here (may) be more text..."
|
||||
|
||||
# Verbosity of logging.
|
||||
# Can be from 0 (only default output) to 3 (debug messages)
|
||||
VERBOSITY = 3
|
||||
##############
|
||||
|
||||
|
||||
main()
|
||||
|
||||
# This is sent to the client after the connection is established
|
||||
MOTD = "Welcome! This is only a test server, for developing purposes.\n"\
|
||||
"Here (may) be more text..."
|
||||
|
||||
# Verbosity of logging.
|
||||
# Can be from 0 (only default output) to 3 (debug messages)
|
||||
VERBOSITY = 3
|
||||
##############
|
||||
|
||||
|
||||
main()
|
||||
|
|
Binary file not shown.
|
@ -1,2 +1,2 @@
|
|||
from .argparser import argparser
|
||||
from .content import content
|
||||
from .comm import comm
|
||||
|
|
|
@ -1,78 +1,77 @@
|
|||
# includes/argparser.py
|
||||
#
|
||||
# module version: 1.0.20130424
|
||||
# module version: 1.0.20130425
|
||||
#
|
||||
|
||||
|
||||
class argparser:
|
||||
|
||||
def parse(program_version, protocol_version):
|
||||
import argparse
|
||||
|
||||
parser = argparse.ArgumentParser(
|
||||
description = "The server side of the "\
|
||||
"aliased server remote control",
|
||||
add_help = False)
|
||||
|
||||
|
||||
parser.add_argument(
|
||||
"--help",
|
||||
action = "help",
|
||||
help = "show this help message and exit")
|
||||
|
||||
parser.add_argument(
|
||||
"--version",
|
||||
action = "version",
|
||||
version = "Server version: " + program_version +\
|
||||
" / Protocol version: " + protocol_version)
|
||||
|
||||
grp_pid_file_failure = parser.add_mutually_exclusive_group()
|
||||
grp_pid_file_failure.add_argument(
|
||||
"-n",
|
||||
"--delete-pid-file",
|
||||
action = "store_true",
|
||||
help = "deletes the pid file and starts the server")
|
||||
|
||||
grp_pid_file_failure.add_argument(
|
||||
"-m",
|
||||
"--allow-multiple-instances",
|
||||
action = "store_true",
|
||||
help = "ignores the pid file and starts the server. "\
|
||||
"Will not create another pid file.")
|
||||
|
||||
parser.add_argument(
|
||||
"-v",
|
||||
"--verbosity",
|
||||
type = int,
|
||||
choices = range(0, 4),
|
||||
# default = -1,
|
||||
help = "increase output verbosity. Can be from 0 "\
|
||||
"(only default output) to 3 (debug messages).")
|
||||
|
||||
parser.add_argument(
|
||||
"-h",
|
||||
"--host",
|
||||
# default = -1,
|
||||
help = "IP or hostname (use 0.0.0.0 for all interfaces) on which "\
|
||||
"the server should listen")
|
||||
|
||||
parser.add_argument(
|
||||
"-p",
|
||||
"--port",
|
||||
# default = -1,
|
||||
help = "the port on which the server should listen")
|
||||
|
||||
parser.add_argument(
|
||||
"-t",
|
||||
"--timeout",
|
||||
# default = -1,
|
||||
help = "timeout of a connection in seconds - still "\
|
||||
"doesn't work obviously...")
|
||||
|
||||
parser.add_argument(
|
||||
"-e",
|
||||
"--encoding",
|
||||
# default = -1,
|
||||
help = "encoding to be used when communicating with clients")
|
||||
|
||||
return parser.parse_args()
|
||||
|
||||
def parse(program_version, protocol_version):
|
||||
"""
|
||||
Parses comand line arguments
|
||||
"""
|
||||
|
||||
import argparse
|
||||
|
||||
parser = argparse.ArgumentParser(
|
||||
description = "The server side of the "\
|
||||
"aliased server remote control",
|
||||
add_help = False)
|
||||
|
||||
|
||||
parser.add_argument(
|
||||
"--help",
|
||||
action = "help",
|
||||
help = "show this help message and exit")
|
||||
|
||||
parser.add_argument(
|
||||
"--version",
|
||||
action = "version",
|
||||
version = "Server version: " + program_version +\
|
||||
" / Protocol version: " + protocol_version)
|
||||
|
||||
grp_pid_file_failure = parser.add_mutually_exclusive_group()
|
||||
grp_pid_file_failure.add_argument(
|
||||
"-n",
|
||||
"--delete-pid-file",
|
||||
action = "store_true",
|
||||
help = "deletes the pid file and starts the server")
|
||||
|
||||
grp_pid_file_failure.add_argument(
|
||||
"-m",
|
||||
"--allow-multiple-instances",
|
||||
action = "store_true",
|
||||
help = "ignores the pid file and starts the server. "\
|
||||
"Will not create another pid file.")
|
||||
|
||||
parser.add_argument(
|
||||
"-v",
|
||||
"--verbosity",
|
||||
type = int,
|
||||
choices = range(0, 4),
|
||||
help = "increase output verbosity. Can be from 0 "\
|
||||
"(only default output) to 3 (debug messages).")
|
||||
|
||||
parser.add_argument(
|
||||
"-h",
|
||||
"--host",
|
||||
help = "IP or hostname (use 0.0.0.0 for all interfaces) on which "\
|
||||
"the server should listen")
|
||||
|
||||
parser.add_argument(
|
||||
"-p",
|
||||
"--port",
|
||||
help = "the port on which the server should listen")
|
||||
|
||||
parser.add_argument(
|
||||
"-t",
|
||||
"--timeout",
|
||||
help = "timeout of a connection in seconds - still "\
|
||||
"doesn't work obviously...")
|
||||
|
||||
parser.add_argument(
|
||||
"-e",
|
||||
"--encoding",
|
||||
help = "encoding to be used when communicating with clients")
|
||||
|
||||
return parser.parse_args()
|
||||
|
|
|
@ -1,18 +1,59 @@
|
|||
# includes/content.py
|
||||
# includes/comm.py
|
||||
#
|
||||
# module version: 0.0.20130424
|
||||
# module version: 0.0.20130426
|
||||
#
|
||||
|
||||
|
||||
class content:
|
||||
import statuscodes
|
||||
|
||||
|
||||
class comm:
|
||||
|
||||
# handler the content
|
||||
def handler(client_address, data, aliases, server_version, protocol_version, verbosity):
|
||||
ret = ""
|
||||
aliases = dict()
|
||||
server_version = ""
|
||||
protocol_version = ""
|
||||
verbosity = 0
|
||||
|
||||
# initializes global settings
|
||||
def init(ServerVersion, ProtocolVersion, Verbosity, Aliases):
|
||||
|
||||
ret = ret +\
|
||||
aliases = Aliases
|
||||
server_version = ServerVersion
|
||||
protocol_version = ProtocolVersion
|
||||
verbosity = Verbosity
|
||||
|
||||
def header(statuscode, AdditionalHeaderLines = ""):
|
||||
"""
|
||||
returns the header
|
||||
"""
|
||||
|
||||
ret =\
|
||||
"{BEGIN}\n"\
|
||||
"asrcp" + protocol_version + "\n"
|
||||
"asrcp" + protocol_version + "\n"\
|
||||
statuscode + " " + statuscodes.description[statuscodes] + "\n"\
|
||||
"ServerVersion:" + server_version + "\n"
|
||||
if AdditionalHeaderLines != "": ret += AdditionalHeaderLines + "\n"
|
||||
ret += "\n\n"
|
||||
|
||||
return ret
|
||||
|
||||
# returns the motd
|
||||
def motd(motd):
|
||||
"""
|
||||
builds and returns a motd package
|
||||
"""
|
||||
|
||||
ret = motd
|
||||
|
||||
return ret
|
||||
|
||||
# handles the content
|
||||
def command(client_address, data):
|
||||
"""
|
||||
processes a command
|
||||
"""
|
||||
|
||||
ret = ""
|
||||
|
||||
# Look if the received message is an
|
||||
# valid alias or a predefined command
|
37
include/statuscodes.py
Normal file
37
include/statuscodes.py
Normal file
|
@ -0,0 +1,37 @@
|
|||
class statuscodes:
|
||||
description = dict(
|
||||
# 000 - 400 server side
|
||||
# 000 information
|
||||
001 = "OK",
|
||||
002 = "Version",
|
||||
003 = "MOTD",
|
||||
# 100 authentication and maintenance
|
||||
101 = "Challenge",
|
||||
102 = "Success",
|
||||
103 = "Failure",
|
||||
104 = "To Many Tries",
|
||||
# 200 command
|
||||
201 = "Valid",
|
||||
202 = "Valid Service Command",
|
||||
203 = "Invalid",
|
||||
204 = "Failure",
|
||||
205 = "Continue",
|
||||
# 300 server
|
||||
301 = "Unhandled Exception",
|
||||
302 = "Shutting Down",
|
||||
303 = "Restarting",
|
||||
304 = "Encoding Error",
|
||||
305 = "SSL Error",
|
||||
# 500 - 900 client side
|
||||
# 500 information
|
||||
501 = "OK",
|
||||
502 = "Version",
|
||||
# 600 authentication and maintenance
|
||||
601 = "Response",
|
||||
602 = "Failure",
|
||||
# 700 command
|
||||
701 = "Reqiuest",
|
||||
702 = "Cancel",
|
||||
# 800 client
|
||||
801 = "SSL Error"
|
||||
)
|
Loading…
Reference in a new issue