This library is a pure python implemnation of a TN3270e emulator. To test this library you can issue the command python tn3270lib.py <hostname> <port>.
This library also implements IND$FILE file transfering.
To connect to a mainframe and log on:
>>> import tn3270lib
>>> tn3270 = tn3270lib.TN3270()
>>> host = "192.168.32.70"
>>> port = 23
>>> tn3270.initiate(host, port)
True
>>> data = tn3270.get_screen()
>>> print data
z/OS V1R13 PUT Level 1209 IP Address = 10.10.0.13
VTAM Terminal =
Application Developer System
// OOOOOOO SSSSS
// OO OO SS
zzzzzz // OO OO SS
zz // OO OO SSSS
zz // OO OO SS
zz // OO OO SS
zzzzzz // OOOOOOO SSSS
System Customization - ADCD.Z113H.*
===> Enter "LOGON" followed by the TSO userid. Example "LOGON IBMUSER" or
===> Enter L followed by the APPLID
===> Examples: "L TSO", "L CICSTS41", "L CICSTS42", "L IMS11", "L IMS12"
>>> tn3270.send_cursor("TSO")
>>> tn3270.get_all_data()
>>> tn3270.send_cursor("margo")
>>> tn3270.get_all_data()
>>> tn3270.send_cursor("secret")
>>> tn3270.get_all_data()
>>> data = tn3270.get_screen()
>>> print data
ICH70001I PLAGUE LAST ACCESS AT 12:15:24 ON TUESDAY, SEPTEMBER 13, 2016
IKJ56455I PLAGUE LOGON IN PROGRESS AT 12:17:25 ON SEPTEMBER 13, 2016
IKJ56951I NO BROADCAST MESSAGES
*****************************************************************
* *
* WELCOME TO # *
* ## *
* ####### ######## ######## ###### ####### ### ## *
* ### ## ### ### ### ## ## #### ## *
* ### ## ####### ####### ### ## ## ####### *
* ### ## ### ## ### ## ## ### ### *
* ###### ####### ## ###### ##### ### ## *
* # *
* *
* A B.U.M. MAINFRAME *
*****************************************************************
READY
>>>
To help understand all the tn3270 commands and the various stages of the connection debugging is included with this library. To enable simple debugging use tn3270.set_debuglevel(1) to increase the verbosity you can set debugging to level 2 tn3270.set_debuglevel(2) but it explains every tn3270 command and push to the buffer but can aid in understanding what it happening behind the scenes.
This library also supports selecting a specific LU. Use the function set_LU("LUNAME") to set the LU you want to use priot to initiating a connection.
With this library you can now send and receive files/datasets EBCDIC to ASCII translation is done by z/OS if you use the get/send_ascii functions
To send file you use the methods send_ascii_file/send_binary_file. Note that each method requires a destination dataset and a local file you wish to send.
>>> tn3270.send_ascii_file("'ibmuser.jcltest'","/home/dade/awesome.jcl")
>>> tn3270.send_binary_file("'ibmuser.exec'","/home/dade/a.out")
To receive files you can use the methods get_ascii_file/get_binary_file. As with sending a file you establish the from dataset and the file you wish to save to locally:
>>> tn3270.get_ascii_file("'ibmuser.jcltest'","/home/dade/new.jcl")
>>> tn3270.get_binary_file("'ibmuser.asm(compiled)'","/home/dade/compiled.asm")
This library wouldn't have been possible with x3270 and its great -trace feature, RFC 2355, RFC 1576, the python telnet library and various stackoverflow tips!
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