def main():
args = parse_arguments()
set_logging(args.verbose, args.debug)
msg_path = args.msg_path
with extract_msg.openMsg(msg_path) as msg:
attachments = None
try:
attachments = get_attachments(msg)
except KeyError as _e:
log.debug("Msg does not have attachments embedded. Likely you used a low quality eml -> msg converter for testing and it provided somewhat broken msg files. Or at least that's when this pops off the most for me.")
if attachments is None:
log.debug("No attachments found in msg.")
else:
log.debug("{0} attachments found in msg.".format(len(attachments)))
raw_rtf = msg.rtfBody
if args.extract_raw:
if args.outfile:
with open(args.outfile, 'wb') as fp:
fp.write(raw_rtf)
else:
print(raw_rtf.decode())
else:
rtf_obj = DeEncapsulator(raw_rtf.decode())
rtf_obj.deencapsulate()
if rtf_obj.content_type == 'html':
print(rtf_obj.html)
else:
print(rtf_obj.text)
def _extract_msg_objects(self, msg_obj: MsgObj):
"""Extracts email objects needed to construct an eml from a msg."""
original_eml_header = msg_obj._getStringStream('__substg1.0_007D')
message = email.message_from_string(original_eml_header,
policy=policy.default)
body = {}
if msg_obj.body is not None:
body['text'] = {
"obj": msg_obj.body,
"subtype": 'plain',
"charset": "utf-8",
"cte": "base64"
}
if msg_obj.htmlBody is not None:
try:
_html_encoding_raw = msg_obj.mainProperties['3FDE0003'].value
_html_encoding = codepage2codec(_html_encoding_raw)
except KeyError:
_html_encoding = msg_obj.stringEncoding
body['html'] = {
'obj': msg_obj.htmlBody.decode(),
"subtype": 'html',
"charset": _html_encoding,
"cte": "base64"
}
if msg_obj.rtfBody is not None:
body['rtf'] = {
"obj": msg_obj.rtfBody.decode(),
"subtype": 'rtf',
"charset": 'ascii',
"cte": "base64"
}
try:
rtf_obj = DeEncapsulator(msg_obj.rtfBody)
rtf_obj.deencapsulate()
if (rtf_obj.content_type
== "html") and (msg_obj.htmlBody is None):
self.encapsulated_body = 'text/html'
body['html'] = {
"obj": rtf_obj.html,
"subtype": 'html',
"charset": rtf_obj.text_codec,
"cte": "base64"
}
elif (rtf_obj.content_type
== "text") and (msg_obj.body is None):
self.encapsulated_body = 'text/plain'
body['text'] = {
"obj": rtf_obj.plain_text,
"subtype": 'plain',
"charset": rtf_obj.text_codec
}
except NotEncapsulatedRtf:
logger.debug("RTF body in Msg object is not encapsualted.")
except MalformedEncapsulatedRtf:
logger.info(
"RTF body in Msg object contains encapsulated content, but it is malformed and can't be converted."
)
attachments = msg_obj.attachments
return message, body, attachments
def check_deencapsulate_validity(self,
data,
expect_error=None,
name="test"):
"""Helper to check if a test input raises or doesn't raise an error."""
found_error = None
try:
output = DeEncapsulator(data)
output.deencapsulate()
except Exception as _e:
found_error = _e
if expect_error is not None:
if found_error is None:
self.fail(
"Expected {} but DeEncapsulator finished without error on {}."
.format(expect_error, name))
if not isinstance(found_error, expect_error):
self.fail(
'Unexpected error {} from DeEncapsulator for {}.'.format(
found_error, name))
else:
if found_error is not None:
self.fail(
'Wrong kind of error {} from DeEncapsulator for {}, expected {}.'
.format(type(found_error), name, expect_error))
def test_extracted_correct_from_header(self):
"""
- correctly extract the header type
- with multiple header vals (one in header and one string in body of)
"""
template_data = join(DATA_BASE_DIR, "rtf_parsing",
"from_header_template.rtf")
rtf = self.replace_from_header(template_data, "\\fromhtml1")
output = DeEncapsulator(rtf)
output.deencapsulate()
self.assertEqual('html', output.get_content_type())
rtf = self.replace_from_header(template_data, "\\fromtext")
output = DeEncapsulator(rtf)
output.deencapsulate()
self.assertEqual('text', output.get_content_type())
# Try with them back to back. First should win.
rtf = self.replace_from_header(template_data, "\\fromtext\\fromhtml1")
self.check_deencapsulate_validity(
rtf,
expect_error=MalformedEncapsulatedRtf,
name="multiple FROM headers means malformed")
rtf = self.replace_from_header(template_data, "\\fromhtml1\\fromtext")
self.check_deencapsulate_validity(
rtf,
expect_error=MalformedEncapsulatedRtf,
name="multiple FROM headers means malformed")
def test_japanese_encoded_text(self):
""" """
rtf_path = join(DATA_BASE_DIR, "plain_text", "japanese_iso_2022.rtf")
original_body = "すみません。"
with open(rtf_path, 'r') as fp:
raw_rtf = fp.read()
rtf_obj = DeEncapsulator(raw_rtf)
rtf_obj.deencapsulate()
output_text = self.clean_newlines(rtf_obj.text)
self.assertEqual(output_text, original_body)
def test_u_encoded_html(self):
"Tests that de-encapsulation on u encoded encoded HTML works."
rtf_path = join(DATA_BASE_DIR, "html", "multiple-encodings.rtf")
txt_path = join(DATA_BASE_DIR, "html", "multiple-encodings.txt")
with open(txt_path, 'r') as fp:
raw_text = fp.read()
original_text = self.clean_whitespace(raw_text)
with open(rtf_path, 'r') as fp:
raw_rtf = fp.read()
rtf_obj = DeEncapsulator(raw_rtf)
rtf_obj.deencapsulate()
output_text = self.clean_whitespace(rtf_obj.html)
self.compare_html(original_text, output_text)
def test_quoted_printable(self):
"""Test that encoded text in an original quoted printable message is still quoted when de-encapsulated.
This test checks that it is STILL NOT IMPLEMENTED. So, if you fix it this test will expose that and we will need to change the test."""
quote_printable_rtf_path = join(DATA_BASE_DIR, "plain_text", "quoted_printable_01.rtf")
quote_printable_txt_path = join(DATA_BASE_DIR, "plain_text", "quoted_printable_01.txt")
# quote_printable_eml_path = join(DATA_BASE_DIR, "plain_text", "quoted_printable_01.eml")
# quote_printable_msg_path = join(DATA_BASE_DIR, "plain_text", "quoted_printable_01.msg")
with open(quote_printable_txt_path, 'r') as fp:
raw_text = fp.read()
original_decoded_text = self.clean_newlines(raw_text)
with open(quote_printable_rtf_path, 'r') as fp:
raw_rtf = fp.read()
rtf_obj = DeEncapsulator(raw_rtf)
rtf_obj.deencapsulate()
output_text = self.clean_newlines(rtf_obj.text)
self.assertNotEqual(original_decoded_text, output_text)
def test_decoded_quoted_printable(self):
"""Test that decoded text in an original quoted printable message is still quoted when de-encapsulated."""
quote_printable_rtf_path = join(DATA_BASE_DIR, "plain_text", "quoted_printable_01.rtf")
quote_printable_txt_path = join(DATA_BASE_DIR, "plain_text", "quoted_printable_01.txt")
# quote_printable_eml_path = join(DATA_BASE_DIR, "plain_text", "quoted_printable_01.eml")
# quote_printable_msg_path = join(DATA_BASE_DIR, "plain_text", "quoted_printable_01.msg")
charset = "cp1251"
with open(quote_printable_txt_path, 'r') as fp:
raw_text = fp.read()
original_decoded_text = quopri.decodestring(raw_text)
original_decoded_text = original_decoded_text.decode(charset)
original_decoded_text = self.clean_newlines(original_decoded_text)
with open(quote_printable_rtf_path, 'r') as fp:
raw_rtf = fp.read()
rtf_obj = DeEncapsulator(raw_rtf)
rtf_obj.deencapsulate()
output_text = self.clean_newlines(rtf_obj.text)
self.assertEqual(original_decoded_text, output_text)
def run_parsing(self, rtf):
output = DeEncapsulator(rtf)
output.stripped_rtf = output._strip_htmlrtf_sections()
output.simplified_rtf = output._simplify_text_for_parsing()
output.doc_tree = output._parse_rtf()
return output