#! /usr/bin/env python
"""Decode MIME message"""
-
-from mimedecode_version import __version__, __author__, __copyright__, __license__
-
-
import sys, os
-import email
-
-try:
- from cStringIO import StringIO
-except ImportError:
- from StringIO import StringIO
-
-
-import socket
-host_name = socket.gethostname()
+import subprocess
+from mimedecode_version import __version__, \
+ __author__, __copyright__, __license__
+if sys.version_info[0] >= 3:
+ # Replace email.message._formatparam with _formatparam from Python 2.7
+ # to avoid re-encoding non-ascii params.
+ import formatparam_27
me = os.path.basename(sys.argv[0])
def version(exit=1):
- sys.stdout.write("""\
+ sys.stdout.write("""\
Broytman mimedecode.py version %s, %s
""" % (__version__, __copyright__))
- if exit: sys.exit(0)
-
+ if exit: sys.exit(0)
-def usage(code=0):
- version(0)
- sys.stdout.write("""\
-Usage: %s [-h|--help] [-V|--version] [-cCDP] [-f charset] [-d header] [-p header:param] [-beit mask] [filename]
+def usage(code=0, errormsg=''):
+ version(0)
+ sys.stdout.write("""\
+Usage: %s [-h|--help] [-V|--version] [-cCDP] [-H|--host=hostname] [-f charset] [-d header1[,h2,...]|*[,-h1,...]] [-p header1[,h2,h3,...]:param1[,p2,p3,...]] [-r header1[,h2,...]|*[,-h1,...]] [-R header1[,h2,h3,...]:param1[,p2,p3,...]] [--set-header header:value] [--set-param header:param=value] [-Bbeit mask] [--save-headers|body|message mask] [-O dest_dir] [-o output_file] [input_file [output_file]]
""" % me)
- sys.exit(code)
-
-
-def output(s, outfile=sys.stdout):
- outfile.write(s)
-
-def output_headers(msg, outfile=sys.stdout):
- unix_from = msg.get_unixfrom()
- if unix_from:
- output(unix_from + os.linesep)
- for key, value in msg.items():
- output("%s: %s\n" % (key, value), outfile)
- output("\n", outfile) # End of headers
-
-
-def recode(s, charset):
- return unicode(s, charset, "replace").encode(GlobalOptions.default_encoding, "replace")
-
-
-def recode2(s, charset):
- if charset and charset.lower() <> GlobalOptions.default_encoding:
- s = recode(s, charset)
- return s
-
-
-def _decode_header(s):
- """Return a decoded string according to RFC 2047.
- NOTE: This is almost the same as email.Utils.decode.
- """
- from types import ListType
- import email.Header
-
- L = email.Header.decode_header(s)
- if not isinstance(L, ListType):
- # s wasn't decoded
- return s
-
- rtn = []
- for atom, charset in L:
- if charset is None:
- rtn.append(atom)
- else:
- rtn.append(recode2(atom, charset))
- rtn.append(' ')
- del rtn[-1] # remove the last space
-
- # Now that we've decoded everything, we just need to join all the parts
- # together into the final string.
- return ''.join(rtn)
-
+ if errormsg:
+ sys.stderr.write(errormsg + os.linesep)
+ sys.exit(code)
+
+
+def output_headers(msg):
+ unix_from = msg.get_unixfrom()
+ if unix_from:
+ output(unix_from)
+ output(os.linesep)
+ for key, value in msg.items():
+ output(key)
+ output(": ")
+ value = value.split(';', 1)
+ output(value[0])
+ if len(value) == 2:
+ output(";")
+ output(_decode_header(value[1], strip=False))
+ output(os.linesep)
+ output(os.linesep) # End of headers
+
+
+def recode_if_needed(s, charset):
+ if bytes is str: # Python2
+ if isinstance(s, bytes) and \
+ charset and charset.lower() != g.default_encoding:
+ s = s.decode(charset, "replace").\
+ encode(g.default_encoding, "replace")
+ else: # Python3
+ if isinstance(s, bytes):
+ s = s.decode(charset, "replace")
+ return s
+
+
+def _decode_header(s, strip=True):
+ """Return a decoded string according to RFC 2047.
+ NOTE: This is almost the same as email.Utils.decode.
+ """
+ import email.header
+
+ L = email.header.decode_header(s)
+ if not isinstance(L, list):
+ # s wasn't decoded
+ return s
+
+ rtn = []
+ for atom, charset in L:
+ atom = recode_if_needed(atom, charset or g.default_encoding)
+ if strip:
+ atom = atom.strip()
+ rtn.append(atom)
+
+ # Now that we've decoded everything, we just need to join all the parts
+ # together into the final string.
+ return ' '.join(rtn)
def decode_header(msg, header):
- "Decode mail header (if exists) and put it back, if it was encoded"
-
- if msg.has_key(header):
- value = msg[header]
- new_value = _decode_header(value)
- if new_value <> value: # do not bother to touch msg if not changed
- set_header(msg, header, new_value)
+ "Decode mail header (if exists) and put it back, if it was encoded"
-
-def _decode_header_param(s):
- return recode2(s[2], s[0])
+ if header in msg:
+ value = msg[header]
+ new_value = _decode_header(value)
+ if new_value != value: # do not bother to touch msg if not changed
+ set_header(msg, header, new_value)
def decode_header_param(msg, header, param):
- "Decode mail header's parameter (if exists) and put it back, if it was encoded"
-
- if msg.has_key(header):
- value = msg.get_param(param, header=header)
- if value:
- from types import TupleType
- if isinstance(value, TupleType):
- new_value = _decode_header_param(value)
- else:
- new_value = _decode_header(value)
- if new_value <> value: # do not bother to touch msg if not changed
- msg.set_param(param, new_value, header)
-
+ "Decode mail header's parameter (if exists) and put it back, if it was encoded"
+
+ if header in msg:
+ value = msg.get_param(param, header=header)
+ if value:
+ if isinstance(value, tuple):
+ new_value = recode_if_needed(value[2], value[0])
+ else:
+ new_value = _decode_header(value)
+ if new_value != value: # do not bother to touch msg if not changed
+ msg.set_param(param, new_value, header)
+
+
+def _get_exceptions(list):
+ return [x[1:].lower() for x in list[1:] if x[0]=='-']
+
+def _decode_headers_params(msg, header, decode_all_params, param_list):
+ if decode_all_params:
+ params = msg.get_params(header=header)
+ if params:
+ for param, value in params:
+ if param not in param_list:
+ decode_header_param(msg, header, param)
+ else:
+ for param in param_list:
+ decode_header_param(msg, header, param)
+
+def _remove_headers_params(msg, header, remove_all_params, param_list):
+ if remove_all_params:
+ params = msg.get_params(header=header)
+ if params:
+ if param_list:
+ for param, value in params:
+ if param not in param_list:
+ msg.del_param(param, header)
+ else:
+ value = msg[header]
+ if value is None: # No such header
+ return
+ if ';' not in value: # There are no parameters
+ return
+ del msg[header] # Delete all such headers
+ # Get the value without parameters and set it back
+ msg[header] = value.split(';')[0].strip()
+ else:
+ for param in param_list:
+ msg.del_param(param, header)
def decode_headers(msg):
- "Decode message headers according to global options"
-
- for header in GlobalOptions.decode_headers:
- decode_header(msg, header)
-
- for header, param in GlobalOptions.decode_header_params:
- decode_header_param(msg, header, param)
+ "Decode message headers according to global options"
+
+ for header_list in g.remove_headers:
+ header_list = header_list.split(',')
+ if header_list[0] == '*': # Remove all headers except listed
+ header_list = _get_exceptions(header_list)
+ for header in msg.keys():
+ if header.lower() not in header_list:
+ del msg[header]
+ else: # Remove listed headers
+ for header in header_list:
+ del msg[header]
+
+ for header_list, param_list in g.remove_headers_params:
+ header_list = header_list.split(',')
+ param_list = param_list.split(',')
+ remove_all_params = param_list[0] == '*' # Remove all params except listed
+ if remove_all_params:
+ param_list = _get_exceptions(param_list)
+ if header_list[0] == '*': # Remove for all headers except listed
+ header_list = _get_exceptions(header_list)
+ for header in msg.keys():
+ if header.lower() not in header_list:
+ _remove_headers_params(msg, header, remove_all_params, param_list)
+ else: # Decode for listed headers
+ for header in header_list:
+ _remove_headers_params(msg, header, remove_all_params, param_list)
+
+ for header_list in g.decode_headers:
+ header_list = header_list.split(',')
+ if header_list[0] == '*': # Decode all headers except listed
+ header_list = _get_exceptions(header_list)
+ for header in msg.keys():
+ if header.lower() not in header_list:
+ decode_header(msg, header)
+ else: # Decode listed headers
+ for header in header_list:
+ decode_header(msg, header)
+
+ for header_list, param_list in g.decode_header_params:
+ header_list = header_list.split(',')
+ param_list = param_list.split(',')
+ decode_all_params = param_list[0] == '*' # Decode all params except listed
+ if decode_all_params:
+ param_list = _get_exceptions(param_list)
+ if header_list[0] == '*': # Decode for all headers except listed
+ header_list = _get_exceptions(header_list)
+ for header in msg.keys():
+ if header.lower() not in header_list:
+ _decode_headers_params(msg, header, decode_all_params, param_list)
+ else: # Decode for listed headers
+ for header in header_list:
+ _decode_headers_params(msg, header, decode_all_params, param_list)
def set_header(msg, header, value):
- "Replace header"
+ "Replace header"
- if msg.has_key(header):
- msg.replace_header(header, value)
- else:
- msg[header] = value
+ if header in msg:
+ msg.replace_header(header, value)
+ else:
+ msg[header] = value
def set_content_type(msg, newtype, charset=None):
- msg.set_type(newtype)
-
- if charset:
- msg.set_param("charset", charset, "Content-Type")
+ msg.set_type(newtype)
+ if charset:
+ msg.set_param("charset", charset, "Content-Type")
caps = None # Globally stored mailcap database; initialized only if needed
def decode_body(msg, s):
- "Decode body to plain text using first copiousoutput filter from mailcap"
-
- import mailcap, tempfile
-
- global caps
- if caps is None:
- caps = mailcap.getcaps()
-
- content_type = msg.get_content_type()
- filename = tempfile.mktemp()
- command = None
-
- entries = mailcap.lookup(caps, content_type, "view")
- for entry in entries:
- if entry.has_key('copiousoutput'):
- if entry.has_key('test'):
- test = mailcap.subst(entry['test'], content_type, filename)
- if test and os.system(test) != 0:
- continue
- command = mailcap.subst(entry["view"], content_type, filename)
- break
-
- if not command:
- return s
-
- file = open(filename, 'w')
- file.write(s)
- file.close()
-
- pipe = os.popen(command, 'r')
- s = pipe.read()
- pipe.close()
- os.remove(filename)
-
- set_content_type(msg, "text/plain")
- msg["X-MIME-Autoconverted"] = "from %s to text/plain by %s id %s" % (content_type, host_name, command.split()[0])
-
- return s
+ "Decode body to plain text using first copiousoutput filter from mailcap"
+
+ import mailcap, tempfile
+
+ global caps
+ if caps is None:
+ caps = mailcap.getcaps()
+
+ content_type = msg.get_content_type()
+ if content_type.startswith('text/'):
+ charset = msg.get_content_charset()
+ else:
+ charset = None
+ filename = tempfile.mktemp()
+ command = None
+
+ entries = mailcap.lookup(caps, content_type, "view")
+ for entry in entries:
+ if 'copiousoutput' in entry:
+ if 'test' in entry:
+ test = mailcap.subst(entry['test'], content_type, filename)
+ if test and os.system(test) != 0:
+ continue
+ command = mailcap.subst(entry["view"], content_type, filename)
+ break
+
+ if not command:
+ return s
+
+ outfile = open(filename, 'wb')
+ if charset and bytes is not str and isinstance(s, bytes): # Python3
+ s = s.decode(charset, "replace")
+ if not isinstance(s, bytes):
+ s = s.encode(g.default_encoding, "replace")
+ outfile.write(s)
+ outfile.close()
+
+ pipe = subprocess.Popen(command, shell=True, stdout=subprocess.PIPE)
+ new_s = pipe.stdout.read()
+ pipe.stdout.close()
+ if pipe.wait() == 0: # result=0, Ok
+ s = new_s
+ if bytes is not str and isinstance(s, bytes): # Python3
+ s = s.decode(g.default_encoding, "replace")
+ if charset and not isinstance(s, bytes):
+ s = s.encode(charset, "replace")
+ set_content_type(msg, "text/plain")
+ msg["X-MIME-Autoconverted"] = "from %s to text/plain by %s id %s" % (content_type, g.host_name, command.split()[0])
+ else:
+ msg["X-MIME-Autoconverted"] = "failed conversion from %s to text/plain by %s id %s" % (content_type, g.host_name, command.split()[0])
+ os.remove(filename)
+
+ return s
def recode_charset(msg, s):
- "Recode charset of the message to the default charset"
+ "Recode charset of the message to the default charset"
- save_charset = charset = msg.get_content_charset()
- if charset and charset.lower() <> GlobalOptions.default_encoding:
- s = recode2(s, charset)
- content_type = msg.get_content_type()
- set_content_type(msg, content_type, GlobalOptions.default_encoding)
- msg["X-MIME-Autoconverted"] = "from %s to %s by %s id %s" % (save_charset, GlobalOptions.default_encoding, host_name, me)
- return s
+ save_charset = charset = msg.get_content_charset()
+ if charset and charset.lower() != g.default_encoding:
+ s = recode_if_needed(s, charset)
+ content_type = msg.get_content_type()
+ set_content_type(msg, content_type, g.default_encoding)
+ msg["X-MIME-Autoconverted"] = "from %s to %s by %s id %s" % (save_charset, g.default_encoding, g.host_name, me)
+ return s
def totext(msg, instring):
- "Convert instring content to text"
-
- if msg.is_multipart(): # Recursively decode all parts of the multipart message
- newfile = StringIO(str(msg))
- newfile.seek(0)
- decode_file(newfile)
- return
-
- # Decode body and recode charset
- s = decode_body(msg, instring)
- if GlobalOptions.recode_charset:
- s = recode_charset(msg, s)
-
- output_headers(msg)
- output(s)
+ "Convert instring content to text"
+
+ # Decode body and recode charset
+ s = decode_body(msg, instring)
+ if g.recode_charset:
+ s = recode_charset(msg, s)
+
+ output_headers(msg)
+ output(s)
+ return s
+
+
+mimetypes = None
+
+def _guess_extension(ctype):
+ global mimetypes
+ if mimetypes is None:
+ import mimetypes
+ mimetypes.init()
+ user_mime_type = os.path.expanduser('~/.mime.types')
+ if os.path.exists(user_mime_type):
+ mimetypes._db.read(user_mime_type)
+ return mimetypes.guess_extension(ctype)
+
+def _save_message(msg, outstring, save_headers=False, save_body=False):
+ for header, param in (
+ ("Content-Disposition", "filename"),
+ ("Content-Type", "name"),
+ ):
+ fname = msg.get_param(param, header=header)
+ if fname:
+ if isinstance(fname, tuple):
+ fname = fname[2] # Do not recode if it isn't recoded yet
+ try:
+ for forbidden in chr(0), '/', '\\':
+ if forbidden in fname:
+ raise ValueError
+ except ValueError:
+ continue
+ fname = '-' + fname
+ break
+ else:
+ fname = ''
+ g.save_counter += 1
+ fname = str(g.save_counter) + fname
+ if '.' not in fname:
+ ext = _guess_extension(msg.get_content_type())
+ if ext: fname += ext
+
+ global output
+ save_output = output
+ outfile = open_output_file(fname)
+ def _output_bytes(s):
+ if not isinstance(s, bytes):
+ s = s.encode(g.default_encoding, "replace")
+ outfile.write(s)
+ output = _output_bytes
+ if save_headers:
+ output_headers(msg)
+ if save_body:
+ output(outstring)
+ outfile.close()
+ output = save_output
def decode_part(msg):
- "Decode one part of the message"
-
- decode_headers(msg)
- encoding = msg["Content-Transfer-Encoding"]
-
- if encoding in (None, '', '7bit', '8bit', 'binary'):
- outstring = str(msg.get_payload())
- else: # Decode from transfer ecoding to text or binary form
- outstring = str(msg.get_payload(decode=1))
- set_header(msg, "Content-Transfer-Encoding", "8bit")
- msg["X-MIME-Autoconverted"] = "from %s to 8bit by %s id %s" % (encoding, host_name, me)
-
- # Test all mask lists and find what to do with this content type
- masks = []
- ctype = msg.get_content_type()
- if ctype:
- masks.append(ctype)
- mtype = msg.get_content_maintype()
- if mtype:
- masks.append(mtype + '/*')
- masks.append('*/*')
-
- for content_type in masks:
- if content_type in GlobalOptions.totext_mask:
- totext(msg, outstring)
- return
- elif content_type in GlobalOptions.binary_mask:
- output_headers(msg)
- output(outstring)
- return
- elif content_type in GlobalOptions.ignore_mask:
- output_headers(msg)
- output("\nMessage body of type `%s' skipped.\n" % content_type)
- return
- elif content_type in GlobalOptions.error_mask:
- raise ValueError, "content type `%s' prohibited" % content_type
-
- # Neither content type nor masks were listed - decode by default
- totext(msg, outstring)
-
-
-def decode_file(infile):
- "Decode the entire message"
-
- msg = email.message_from_file(infile)
- boundary = msg.get_boundary()
-
- if msg.is_multipart():
- decode_headers(msg)
- output_headers(msg)
-
- if msg.preamble: # Preserve the first part, it is probably not a RFC822-message
- output(msg.preamble) # Usually it is just a few lines of text (MIME warning)
-
- for subpart in msg.get_payload():
- output("\n--%s\n" % boundary)
- decode_part(subpart)
-
- output("\n--%s--\n" % boundary)
-
- if msg.epilogue:
- output(msg.epilogue)
-
- else:
- if msg.has_key("Content-Type"): # Simple one-part message - decode it
- decode_part(msg)
-
- else: # Not a message, just text - copy it literally
- output(str(msg))
+ "Decode one part of the message"
+
+ decode_headers(msg)
+
+ # Test all mask lists and find what to do with this content type
+ masks = []
+ ctype = msg.get_content_type()
+ if ctype:
+ masks.append(ctype)
+ mtype = ctype.split('/')[0]
+ masks.append(mtype + '/*')
+ masks.append('*/*')
+
+ left_binary = False
+ for content_type in masks:
+ if content_type in g.totext_mask or \
+ content_type in g.decoded_binary_mask:
+ break
+ elif content_type in g.binary_mask:
+ left_binary = True
+ break
+ elif content_type in g.fully_ignore_mask:
+ return
+
+ encoding = msg["Content-Transfer-Encoding"]
+ if left_binary or encoding in (None, '', '7bit', '8bit', 'binary'):
+ outstring = msg.get_payload()
+ else: # Decode from transfer ecoding to text or binary form
+ outstring = msg.get_payload(decode=1)
+ set_header(msg, "Content-Transfer-Encoding", "8bit")
+ msg["X-MIME-Autoconverted"] = "from %s to 8bit by %s id %s" % (encoding, g.host_name, me)
+
+ for content_type in masks:
+ if content_type in g.totext_mask:
+ outstring = totext(msg, outstring)
+ break
+ elif content_type in g.binary_mask or \
+ content_type in g.decoded_binary_mask:
+ output_headers(msg)
+ output(outstring)
+ break
+ elif content_type in g.ignore_mask:
+ output_headers(msg)
+ output("%sMessage body of type %s skipped.%s" % (os.linesep, ctype, os.linesep))
+ break
+ elif content_type in g.error_mask:
+ break
+ else:
+ # Neither content type nor masks were listed - decode by default
+ outstring = totext(msg, outstring)
+
+ for content_type in masks:
+ if content_type in g.save_headers_mask:
+ _save_message(msg, outstring, save_headers=True, save_body=False)
+ if content_type in g.save_body_mask:
+ _save_message(msg, outstring, save_headers=False, save_body=True)
+ if content_type in g.save_message_mask:
+ _save_message(msg, outstring, save_headers=True, save_body=True)
+
+ for content_type in masks:
+ if content_type in g.error_mask:
+ raise ValueError("content type %s prohibited" % ctype)
+
+def decode_multipart(msg):
+ "Decode multipart"
+
+ decode_headers(msg)
+ boundary = msg.get_boundary()
+
+ masks = []
+ ctype = msg.get_content_type()
+ if ctype:
+ masks.append(ctype)
+ mtype = ctype.split('/')[0]
+ masks.append(mtype + '/*')
+ masks.append('*/*')
+
+ for content_type in masks:
+ if content_type in g.fully_ignore_mask:
+ return
+ elif content_type in g.ignore_mask:
+ output_headers(msg)
+ output("%sMessage body of type %s skipped.%s" % (os.linesep, ctype, os.linesep))
+ if boundary:
+ output("%s--%s--%s" % (os.linesep, boundary, os.linesep))
+ return
+
+ for content_type in masks:
+ if content_type in g.save_body_mask or \
+ content_type in g.save_message_mask:
+ _out_l = []
+ first_subpart = True
+ for subpart in msg.get_payload():
+ if first_subpart:
+ first_subpart = False
+ else:
+ _out_l.append(os.linesep)
+ _out_l.append("--%s%s" % (boundary, os.linesep))
+ _out_l.append(subpart.as_string())
+ _out_l.append("%s--%s--%s" % (os.linesep, boundary, os.linesep))
+ outstring = ''.join(_out_l)
+ break
+ else:
+ outstring = None
+
+ for content_type in masks:
+ if content_type in g.save_headers_mask:
+ _save_message(msg, outstring, save_headers=True, save_body=False)
+ if content_type in g.save_body_mask:
+ _save_message(msg, outstring, save_headers=False, save_body=True)
+ if content_type in g.save_message_mask:
+ _save_message(msg, outstring, save_headers=True, save_body=True)
+
+ for content_type in masks:
+ if content_type in g.error_mask:
+ raise ValueError("content type %s prohibited" % ctype)
+
+ output_headers(msg)
+
+ if msg.preamble: # Preserve the first part, it is probably not a RFC822-message
+ output(msg.preamble) # Usually it is just a few lines of text (MIME warning)
+ if msg.preamble is not None:
+ output(os.linesep)
+
+ first_subpart = True
+ for subpart in msg.get_payload():
+ if boundary:
+ if first_subpart:
+ first_subpart = False
+ else:
+ output(os.linesep)
+ output("--%s%s" % (boundary, os.linesep))
+
+ # Recursively decode all parts of the subpart
+ decode_message(subpart)
+
+ if boundary:
+ output("%s--%s--%s" % (os.linesep, boundary, os.linesep))
+
+ if msg.epilogue:
+ output(msg.epilogue)
+
+
+def decode_message(msg):
+ "Decode message"
+
+ if msg.is_multipart():
+ decode_multipart(msg)
+ elif len(msg): # Simple one-part message (there are headers) - decode it
+ decode_part(msg)
+ else: # Not a message, just text - copy it literally
+ output(msg.as_string())
+
+
+def open_output_file(filename):
+ fullpath = os.path.abspath(os.path.join(g.destination_dir, filename))
+ full_dir = os.path.dirname(fullpath)
+ create = not os.path.isdir(full_dir)
+ if create:
+ os.makedirs(full_dir)
+ try:
+ return open(fullpath, 'wb')
+ except:
+ if create:
+ os.removedirs(full_dir)
class GlobalOptions:
- from m_lib.defenc import default_encoding
- recode_charset = 1 # recode charset of message body
-
- decode_headers = ["From", "Subject"] # A list of headers to decode
- decode_header_params = [
- ("Content-Type", "name"),
- ("Content-Disposition", "filename"),
- ] # A list of headers' parameters to decode
-
- totext_mask = [] # A list of content-types to decode
- binary_mask = [] # A list to pass through
- ignore_mask = [] # Ignore (skip, do not decode and do not include into output)
- error_mask = [] # Raise error if encounter one of these
-
-
-def init():
- from getopt import getopt, GetoptError
-
- try:
- options, arguments = getopt(sys.argv[1:], 'hVcCDPf:d:p:b:e:i:t:',
- ['help', 'version'])
- except GetoptError:
- usage(1)
-
- for option, value in options:
- if option == '-h':
- usage()
- elif option == '--help':
- usage()
- elif option == '-V':
- version()
- elif option == '--version':
- version()
- elif option == '-c':
- GlobalOptions.recode_charset = 1
- elif option == '-C':
- GlobalOptions.recode_charset = 0
- elif option == '-f':
- GlobalOptions.default_encoding = value
- elif option == '-d':
- GlobalOptions.decode_headers.append(value)
- elif option == '-D':
- GlobalOptions.decode_headers = []
- elif option == '-p':
- GlobalOptions.decode_header_params.append(value.split(':', 1))
- elif option == '-P':
- GlobalOptions.decode_header_params = []
- elif option == '-t':
- GlobalOptions.totext_mask.append(value)
- elif option == '-b':
- GlobalOptions.binary_mask.append(value)
- elif option == '-i':
- GlobalOptions.ignore_mask.append(value)
- elif option == '-e':
- GlobalOptions.error_mask.append(value)
- else:
- usage(1)
-
- return arguments
+ from m_lib.defenc import default_encoding
+ recode_charset = 1 # recode charset of message body
+
+ host_name = None
+
+ # A list of headers to decode
+ decode_headers = ["From", "To", "Cc", "Reply-To", "Mail-Followup-To",
+ "Subject"]
+
+ # A list of headers parameters to decode
+ decode_header_params = [
+ ("Content-Type", "name"),
+ ("Content-Disposition", "filename"),
+ ]
+
+ # A list of headers to remove
+ remove_headers = []
+ # A list of headers parameters to remove
+ remove_headers_params = []
+
+ # A list of header/value pairs to set
+ set_header_value = []
+ # A list of header/parameter/value triples to set
+ set_header_param = []
+
+ totext_mask = [] # A list of content-types to decode
+ binary_mask = [] # A list of content-types to pass through
+ decoded_binary_mask = [] # A list of content-types to pass through (content-transfer-decoded)
+ ignore_mask = [] # Ignore (do not decode and do not include into output) but output a warning instead of the body
+ fully_ignore_mask = [] # Completely ignore - no headers, no body, no warning
+ error_mask = [] # Raise error if encounter one of these
+
+ save_counter = 0
+ save_headers_mask = []
+ save_body_mask = []
+ save_message_mask = []
+
+ input_filename = None
+ output_filename = None
+ destination_dir = os.curdir
+
+g = GlobalOptions
+
+
+def get_opts():
+ from getopt import getopt, GetoptError
+
+ try:
+ options, arguments = getopt(sys.argv[1:],
+ 'hVcCDPH:f:d:p:r:R:b:B:e:I:i:t:O:o:',
+ ['help', 'version', 'host=',
+ 'save-headers=', 'save-body=', 'save-message=',
+ 'set-header=', 'set-param='])
+ except GetoptError:
+ usage(1)
+
+ for option, value in options:
+ if option in ('-h', '--help'):
+ usage()
+ elif option in ('-V', '--version'):
+ version()
+ elif option == '-c':
+ g.recode_charset = 1
+ elif option == '-C':
+ g.recode_charset = 0
+ elif option in ('-H', '--host'):
+ g.host_name = value
+ elif option == '-f':
+ g.default_encoding = value
+ elif option == '-d':
+ if value.startswith('*'):
+ g.decode_headers = []
+ g.decode_headers.append(value)
+ elif option == '-D':
+ g.decode_headers = []
+ elif option == '-p':
+ g.decode_header_params.append(value.split(':', 1))
+ elif option == '-P':
+ g.decode_header_params = []
+ elif option == '-r':
+ g.remove_headers.append(value)
+ elif option == '-R':
+ g.remove_headers_params.append(value.split(':', 1))
+ elif option == '--set-header':
+ g.set_header_value.append(value.split(':', 1))
+ elif option == '--set-param':
+ header, value = value.split(':', 1)
+ if '=' in value:
+ param, value = value.split('=', 1)
+ else:
+ param, value = value.split(':', 1)
+ g.set_header_param.append((header, param, value))
+ elif option == '-t':
+ g.totext_mask.append(value)
+ elif option == '-B':
+ g.binary_mask.append(value)
+ elif option == '-b':
+ g.decoded_binary_mask.append(value)
+ elif option == '-I':
+ g.fully_ignore_mask.append(value)
+ elif option == '-i':
+ g.ignore_mask.append(value)
+ elif option == '-e':
+ g.error_mask.append(value)
+ elif option == '--save-headers':
+ g.save_headers_mask.append(value)
+ elif option == '--save-body':
+ g.save_body_mask.append(value)
+ elif option == '--save-message':
+ g.save_message_mask.append(value)
+ elif option == '-O':
+ g.destination_dir = value
+ elif option == '-o':
+ g.output_filename = value
+ else:
+ usage(1)
+
+ return arguments
if __name__ == "__main__":
- arguments = init()
-
- la = len(arguments)
- if la == 0:
- infile = sys.stdin
- elif la <> 1:
- usage(1)
- elif arguments[0] == '-':
- infile = sys.stdin
- else:
- infile = open(arguments[0], 'r')
-
- decode_file(infile)
+ arguments = get_opts()
+
+ la = len(arguments)
+ if la == 0:
+ g.input_filename = '-'
+ infile = sys.stdin
+ if g.output_filename:
+ outfile = open_output_file(g.output_filename)
+ else:
+ g.output_filename = '-'
+ outfile = sys.stdout
+ elif la in (1, 2):
+ if (arguments[0] == '-'):
+ g.input_filename = '-'
+ infile = sys.stdin
+ else:
+ g.input_filename = arguments[0]
+ infile = open(arguments[0], 'r')
+ if la == 1:
+ if g.output_filename:
+ outfile = open_output_file(g.output_filename)
+ else:
+ g.output_filename = '-'
+ outfile = sys.stdout
+ elif la == 2:
+ if g.output_filename:
+ usage(1, 'Too many output filenames')
+ if (arguments[1] == '-'):
+ g.output_filename = '-'
+ outfile = sys.stdout
+ else:
+ g.output_filename = arguments[1]
+ outfile = open_output_file(g.output_filename)
+ else:
+ usage(1, 'Too many arguments')
+
+ if (infile is sys.stdin) and sys.stdin.isatty():
+ if (outfile is sys.stdout) and sys.stdout.isatty():
+ usage()
+ usage(1, 'Filtering from console is forbidden')
+
+ if not g.host_name:
+ import socket
+ g.host_name = socket.gethostname()
+
+ g.outfile = outfile
+ if hasattr(outfile, 'buffer'):
+ def output_bytes(s):
+ if not isinstance(s, bytes):
+ s = s.encode(g.default_encoding, "replace")
+ outfile.buffer.write(s)
+ output = output_bytes
+ else:
+ output = outfile.write
+
+ import email
+ msg = email.message_from_file(infile)
+
+ for header, value in g.set_header_value:
+ set_header(msg, header, value)
+
+ for header, param, value in g.set_header_param:
+ if header in msg:
+ msg.set_param(param, value, header)
+
+ try:
+ decode_message(msg)
+ finally:
+ infile.close()
+ outfile.close()
projects / mimedecode.git / blobdiff