def post(self, request):
try:
#import pdb; pdb.set_trace()
req = Request(request.environ)
log.debug('Received HTTP Request: %s', req)
print 'these are the request.params: ', request.params
print "request.environ is" , request.environ
#print "request.environ['CONTENT_LENGTH'] is" , request.environ['CONTENT_LENGTH']
print "FULL RAW POST Data:"
#this CONTENT_LENGTH wasn't getting populated in the environment on remote installations using encryption
#print request.environ['wsgi.input'].read(int(request.environ['CONTENT_LENGTH']))
print request.environ['wsgi.input'].read(req.content_length)
print "FULL request.POST Data:"
print request.POST
postdatakeys = request.POST.keys()
print "keys are:", postdatakeys
#accept only one posted file per request for now
stream_fieldstorage = request.POST[postdatakeys[0]]
print "size of post data in bytes", len(stream_fieldstorage.value)
#print "CGI FileStorage uploaded is: ", myfile
#Create a file in a permanent location, moving it out of CGI FieldStorage
#make file
file_prefix = 'received_data_' + str(datetime.datetime.now())
file_prefix = file_prefix.replace(' ', '_')
file_suffix_enc = '_encrypted.xml'
file_suffix_unenc = '_unencrypted.xml'
if inputConfiguration.USE_ENCRYPTION:
print "using encryption"
file_name = file_prefix + file_suffix_enc
elif not inputConfiguration.USE_ENCRYPTION:
print "not using encryption"
file_name = file_prefix + file_suffix_unenc
else:
print "not sure if using encrypted file or not"
if not os.path.exists(inputConfiguration.WEB_SERVICE_INPUTFILES_PATH[0]):
os.mkdir(inputConfiguration.WEB_SERVICE_INPUTFILES_PATH[0])
file_full_path = os.path.join(inputConfiguration.WEB_SERVICE_INPUTFILES_PATH[0], file_name)
print 'file_full_path: ', file_full_path
#open file
if inputConfiguration.USE_ENCRYPTION:
try:
print "trying to open encrypted file"
encrypted_file = open(file_full_path, 'w')
except:
print "Error opening encrypted instance file for writing"
raise Exception("Error opening encrypted instance file for writing")
if not inputConfiguration.USE_ENCRYPTION:
try:
print "trying to open unencrypted file"
unencrypted_file = open(file_full_path, 'w')
except:
print "Error opening unencrypted instance file for writing"
raise Exception("Error opening unencrypted instance file for writing")
#write to file
if inputConfiguration.USE_ENCRYPTION:
print 'writing', file_name, 'to', server_root, 'for decryption'
print 'encrypted_file is', encrypted_file
encrypted_file.write(stream_fieldstorage.value)
encrypted_file.close()
if not inputConfiguration.USE_ENCRYPTION:
print 'writing', file_name, 'to', server_root, 'server root for parsing'
print 'unencrypted_file is', unencrypted_file
unencrypted_file.write(stream_fieldstorage.value)
unencrypted_file.close()
#check if a file was written, regardless of encryption
if not os.path.exists(file_full_path):
print "A file wasn't written"
else:
print "A file was written at: ", file_full_path
#decrypt file if using decryption
#assume file is encrypted, since it can be difficult to tell if it is. We could look for XML structures, but how do you easily tell bad/invalid XML apart from encrypted? If not encrypted, that's a problem.
#decrypt file
if inputConfiguration.USE_ENCRYPTION:
try:
encrypted_file = open(file_full_path, 'r')
except:
print "couldn't open encrypted file for reading/decryption"
raise Exception("couldn't open encrypted file for reading/decryption")
data_decrypted = False
encoded_stream = encrypted_file.read()
encrypted_file.close()
cryptors = [DES3, GPG]
for cryptor in cryptors:
cobj = cryptor()
try:
if cobj.__class__.__name__ == 'DES3':
keyiv = get_incoming_3des_key_iv()
# decode base64 stream
encrypted_stream = base64.b64decode(encoded_stream)
# decrypt stream
decrypted_stream = cobj.decrypt(str(encrypted_stream), keyiv['key'], iv=keyiv['iv'])
# test if the resulting decrypted_stream is XML
xml_test = etree.XML(decrypted_stream)
data_decrypted = True
xml_test = None
break
if cobj.__class__.__name__ == 'GPG':
# decode base64 stream
encrypted_stream = base64.b64decode(encoded_stream)
# decrypt stream
decrypted_stream = cobj.decrypt(str(encrypted_stream))
# test if the resulting decrypted_stream is XML
xml_test = etree.XML(decrypted_stream)
data_decrypted = True
xml_test = None
break
except:
continue
if data_decrypted:
file_suffix_unenc = '_decrypted.xml'
file_name = file_prefix + file_suffix_unenc
#file_full_path = fileutils.getUniqueFileNameForMove(file_name, inputConfiguration.INPUTFILES_PATH[0])
file_full_path = inputConfiguration.WEB_SERVICE_INPUTFILES_PATH[0] + '/' + file_name
try:
decrypted_file = open(file_full_path, 'w')
except:
print "Error opening decrypted instance file for writing"
raise Exception("Error opening decrypted instance file for writing")
#write to file
print 'writing', file_name, 'to', server_root, 'to validate'
decrypted_file.write(decrypted_stream)
decrypted_file.close()
if not os.path.exists(file_full_path):
print "An decrypted file wasn't written"
else:
print "A file was written at: ", file_full_path
else:
message = "Unable to decrypt %s or the decoded|decrypted data is not valid XML" % file_full_path
print message
raise Exception(message)
#read in candidate XML file
# if inputConfiguration.USE_ENCRYPTION:
# try:
# unencrypted_file = open(file_full_path, 'r')
# except:
# print "couldn't open decrypted file for reading"
#
# if inputConfiguration.USE_ENCRYPTION:
# try:
# unencrypted_file = open(file_full_path, 'r')
# except:
# print "couldn't open unencrypted file for reading"
# remove multiple source tags
incoming_doc = etree.parse(file_full_path)
ns='{https://raw.githubusercontent.com/211tbc/synthesis/master/src/xsd/TBC_Extend_HUD_HMIS.xsd}'
for i, src in enumerate(incoming_doc.findall('{0}Source'.format(ns))):
if i == 0:
# we only care about the first one
continue
# remove the remaning source tags
incoming_doc.getroot().remove(src)
incoming_doc.write(file_full_path, pretty_print=True, encoding="UTF-8")
except Exception as e:
response = Response()
response.status = '500 Server Error'
response.body = file_full_path + '\n' + str(e)
message = '@@@@@@@@@@@@@\nHTTP RESPONSE -- %s; %s\n@@@@@@@@@@@@@' % (response.status, response.body)
print message
return response
# FBY :07/31/2017: Its assumed that we have a file so record that fact that it was received in the
# last_date_time table
db = DB()
session = db.Session()
try:
# Assume that record exists so update it
lifecycle_event = session.query(LastDateTime).filter(LastDateTime.event == 'file received').first()
lifecycle_event.event_date_time = datetime.datetime.now()
session.add(lifecycle_event)
session.commit()
except:
# Assume that record does not exist so insert it
lifecycle_event = LastDateTime(event='file received', event_date_time=datetime.datetime.now())
session.add(lifecycle_event)
session.commit()
# validate XML instance
try:
select = Selector()
result = select.validate(file_full_path, False)
this_schema = result.index(True)
schema_name = select.current_tests[this_schema].__name__
if len(schema_name) > 4:
schema_name = schema_name[:len(schema_name) - 4]
response = Response()
response.status = '202 Successful Validation'
response.body = 'The posted xml (locally at %s) successfully validated against the %s schema.' % (file_name, schema_name)
message = '@@@@@@@@@@@@@\nHTTP RESPONSE -- %s; %s\n@@@@@@@@@@@@@' % (response.status, response.body)
print message
# move valid file over to regular synthesis input_files directory for shredding
print "moving valid file ", file_name, "over to input_files for shredding"
# FBY: Call fileutils.moveFile to move unencrypted files into the input_files folder
fileutils.moveFile(file_full_path, inputConfiguration.INPUTFILES_PATH[0])
return response
except:
details = ''.join(list(set([str(issue) for issue in select.issues])))
response = Response()
response.status = '200 Unsuccessful Validation'
response.body = 'Could not find a matching schema for the posted xml. Details: %s' % (details)
message = '@@@@@@@@@@@@@\nHTTP RESPONSE -- %s; %s\n@@@@@@@@@@@@@' % (response.status, response.body)
print message
return response
def moveFile(self, source_file, destination_location):
fileutils.moveFile(source_file, destination_location)
def moveUsed(self, file_name):
if settings.DEBUG:
print "moving ", file_name, "to", inputConfiguration.USEDFILES_PATH
return fileutils.moveFile(file_name, inputConfiguration.USEDFILES_PATH)
def moveFailed(self, fileName):
fileutils.moveFile(fileName, inputConfiguration.FAILEDFILES_PATH)
