#!/usr/local/bin/python3 # -*- coding: utf-8 -*- # Maintainer: Ivan Herman """ Possible CGI entry point for the RDFa 1.1 package. This version is adapted to the particualarities of the W3C setup as well as my own machine for Python paths @author: U{Ivan Herman} @license: This software is available for use under the U{W3C® SOFTWARE NOTICE AND LICENSE} @contact: Ivan Herman, ivan@w3.org """ """ $Id: RDFa.py,v 1.27 2018/05/23 08:57:19 carcone Exp $ """ __version__ = "4.0.0" import cgi import cgitb import sys, os #import StringIO #cgi.print_environ() if sys.platform == "darwin" : # this is my local machine sys.path.insert(0,'/Users/ivan/Library/Python') sys.path.insert(0,'/Users/ivan/Library/Python/RDFa') os.environ['PyRdfaCacheDir'] = '/Users/ivan/.pyrdfa-cache' cgitb.enable() else : # This will have to be updated for the Python3 installation!!! # webencodings pip3 should also be done!!! sys.path.insert(0,"/usr/lib/python2.7/dist-packages") sys.path.insert(0,'/home/ivan/lib/python') os.environ['PyRdfaCacheDir'] = '/usr/local/apache/cgi/cgi-bin-other/RDFa/data-local' cgitb.enable(display=0, logdir="/home/nobody/tracebacks/") from pyRdfa import processURI, RDFaError # Register the RDFa JSON-LD serializer; for some reasons installing via pip did not work from rdflib.plugin import register, Serializer register('json', Serializer, 'rdflib_jsonld.serializer', 'JsonLDSerializer') def err_message(msg) : from cleanhtml import clean_print print('Content-type: text/html; charset=utf-8') print('Status: 400 Invalid Input') print() print("") print("") print("Error in RDFa processing") print("") print("

Error in distilling RDFa

") print("

") clean_print("pyRdfa cannot process this URI: %s", uri) print("

") if len(msg) != 0 : print("

") clean_print(msg) print("

") print("") print("") sys.exit(1) def brett_test(uri) : if not sys.platform == "darwin" : from checkremote import check_url_safety, UnsupportedResourceError from urllib2 import HTTPError, URLError try: check_url_safety(uri) except HTTPError as e: err_message('HTTP Error with the error code: %s and the error message: "%s"' (e.code, e.reason)) except URLError as e: err_message('URL Error with the error message: "%s"' % e.reason) except UnsupportedResourceError as e: msg = e.args[0] + ": " + e.args[1] err_message('Unsupported Resource Error with the error message "%s"' % msg) except Exception as e: l = len(e.args) msg = "" if l == 0 else (e.args[0] if l == 1 else e.args) err_message('Exception raised: "%s"' % msg) # # to make this thing exist... uri = "" form = cgi.FieldStorage() # First see if an upload is present in the form if "uploaded" in form and form["uploaded"].file : uri = "uploaded:" elif "text" in form and form["text"].value != None and len(form["text"].value.strip()) != 0 : uri = "text:" else : if not "uri" in form : print('Content-type: text/html; charset=utf-8') print('Status: 400 Invalid Input') print() print("") print("") print("Error in RDFa processing") print("") print("

Error in distilling RDFa

") print("

No URI has been specified

") print("") print("") sys.exit(1) try : uri = form.getfirst("uri") except : print('Content-type: text/html; charset=utf-8') print('Status: 400 Invalid Input') print() print("") print("") print("Error in RDFa processing") print("") print("

Error in distilling RDFa

") print("

No URI has been specified

") print("") print("") sys.exit(1) if "validate" in form : from rdfavalidator import validateURI if not (uri == 'text:' or uri == 'uploaded:') : brett_test(uri) print('Content-Type: text/html; charset=utf-8') print() print(validateURI(uri, form)) else : try : # Thanks to Sergio and Diego for the idea and code for the referer branch if uri == "referer" : uri = os.getenv('HTTP_REFERER') if uri is None: newuri = "http://www.w3.org/2012/pyRdfa/no_referer.html" else: brett_test(uri) newuri = "http://www.w3.org/2012/pyRdfa/extract?uri=" + uri print("Status: 307 Moved Temporarily") print("Location: " + newuri) print() else : # last point of check: use Brett's script to check the validity of the URI if not (uri == 'text:' or uri == 'uploaded:') : brett_test(uri) if "format" in form.keys() : format = form.getfirst("format") else : format = "turtle" retval = processURI(uri, format, form) print(retval) except Exception as e : l = len(e.args) msg = "" if l == 0 else (e.args[0] if l == 1 else e.args) err_message('Exception raised: "%s"' % msg)