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-rwxr-xr-xemail-print-mime-structure13
1 files changed, 13 insertions, 0 deletions
diff --git a/email-print-mime-structure b/email-print-mime-structure
index 6d7b0af..b7646e0 100755
--- a/email-print-mime-structure
+++ b/email-print-mime-structure
@@ -103,6 +103,19 @@ class MimePrinter(object):
newprefix = prefix[:-3] + ' '
print(f'{newprefix}↧ (decrypts to)')
self.print_tree(cryptopayload, newprefix + '└', z, 0)
+ else:
+ if z.get_content_type().lower() == 'application/pkcs7-mime' and \
+ str(z.get_param('smime-type')).lower() == 'signed-data':
+ bodypart:Union[List[Message],str,bytes,None] = z.get_payload(decode=True)
+ if isinstance(bodypart, bytes):
+ unwrapped = self.pipe_transform(bodypart, ['certtool', '--p7-show-data', '--p7-info', '--inder'])
+ if unwrapped:
+ newprefix = prefix[:-3] + ' '
+ print(f'{newprefix}⇩ (unwraps to)')
+ self.print_tree(unwrapped, newprefix + '└', z, 0)
+ else:
+ logging.warning(f'Unable to unwrap one-part PKCS#7 signed message (maybe try "apt install gnutls-bin")')
+
def decrypt_part(self, msg:Message, flavor:EncType) -> Optional[Message]:
ciphertext:Union[List[Message],str,bytes,None] = msg.get_payload(decode=True)