Reading a client's header from Python CGI script?

Question

I\'m writing a very simple web service, written in Python and run as CGI on an Apache server.

According to Python docs (somewhere... I forgot where), I can use sys.stdin

Answer 1

This is how I capture in Python 3 from CGI (A) URL, (B) GET parameters and (C) POST data:

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import sys, os, io

CAPTURE URL

myDomainSelf = os.environ.get('SERVER_NAME')

myPathSelf = os.environ.get('PATH_INFO')

myURLSelf = myDomainSelf + myPathSelf

CAPTURE GET DATA

myQuerySelf = os.environ.get('QUERY_STRING')

CAPTURE POST DATA

myTotalBytesStr=(os.environ.get('HTTP_CONTENT_LENGTH'))

if (myTotalBytesStr == None):

myJSONStr = '{"error": {"value": true, "message": "No (post) data received"}}'

else:

myTotalBytes=int(os.environ.get('HTTP_CONTENT_LENGTH'))

myPostDataRaw = io.open(sys.stdin.fileno(),"rb").read(myTotalBytes)

myPostData = myPostDataRaw.decode("utf-8")

Write RAW to FILE

mySpy = "myURLSelf: [" + str(myURLSelf) + "]\n"

mySpy = mySpy + "myQuerySelf: [" + str(myQuerySelf) + "]\n"

mySpy = mySpy + "myPostData: [" + str(myPostData) + "]\n"

You need to define your own myPath here

myFilename = "spy.txt"

myFilePath = myPath + "\" + myFilename

myFile = open(myFilePath, "w")

myFile.write(mySpy)

myFile.close()

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Here are some other useful CGI environment vars:

AUTH_TYPE

CONTENT_LENGTH

CONTENT_TYPE

GATEWAY_INTERFACE

PATH_INFO

PATH_TRANSLATED

QUERY_STRING

REMOTE_ADDR

REMOTE_HOST

REMOTE_IDENT

REMOTE_USER

REQUEST_METHOD

SCRIPT_NAME

SERVER_NAME

SERVER_PORT

SERVER_PROTOCOL

SERVER_SOFTWARE

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I am using this methods on Windows Server with MIIS and Python 3 in CGI mode.