X-Git-Url: https://git.phdru.name/?a=blobdiff_plain;f=mimedecode.py;h=d239a1fe2234e332cb78b7d96387c687c98c6e70;hb=81fed020cb8762634eceec5f85be7a936cb6e67d;hp=5da188ae6081e5396c7bbccad89d92a911a18405;hpb=5eda76399c8d104bbf9cdc3704ccaefb374b6f59;p=mimedecode.git diff --git a/mimedecode.py b/mimedecode.py index 5da188a..d239a1f 100755 --- a/mimedecode.py +++ b/mimedecode.py @@ -1,459 +1,631 @@ -#! /usr/local/bin/python -O -"""Decode MIME message. - -Author: Oleg Broytmann -Copyright: (C) 2001-2002 PhiloSoft Design -License: GPL -""" - -__version__ = "1.1.7" - +#! /usr/bin/env python +"""Decode MIME message""" import sys, os -import mimetools - -try: - from cStringIO import StringIO -except ImportError: - from StringIO import StringIO - - -import socket -host_name = socket.gethostname() +from mimedecode_version import __version__, \ + __author__, __copyright__, __license__ me = os.path.basename(sys.argv[0]) -def usage(code=0): - sys.stdout.write("""\ -Usage: %s [-h|--help] [-V|--version] [-cCDP] [-f charset] [-d header] [-p header:param] [-beit mask] [filename] -""" % me) - sys.exit(code) - - -def version(): - sys.stdout.write("""\ -BroytMann mimedecode.py version %s -""" % __version__) - sys.exit(0) +def version(exit=1): + sys.stdout.write("""\ +Broytman mimedecode.py version %s, %s +""" % (__version__, __copyright__)) + if exit: sys.exit(0) +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) + if errormsg: + sys.stderr.write(errormsg + os.linesep) + sys.exit(code) -def output(s): - sys.stdout.write(s) def output_headers(msg): - if msg.unixfrom: - output(msg.unixfrom) - output("%s\n" % msg) - - -def recode(s, charset): - return unicode(s, charset, "replace").encode(GlobalOptions.default_charset, "replace") - - -def recode2(s, charset): - if charset and charset <> GlobalOptions.default_charset: - charset = charset.lower() - s = recode(s, charset) - return s - - -def getparam(msg, header, param): - "Get parameter from the header; return the header without the parameter, parameter itself and rfc2231 flag" - - if not msg.has_key(header): - return None, None, 0 - - header = msg[header] - parts = [part.strip() for part in header.split(';')] - - new_parts = [parts[0]] # The header itself - del parts[0] - - new_value = None - rfc2231_encoded = 0 - - import re, rfc822 - rfc2231_continuation = re.compile("^%s\\*[0-9]+\\*?$" % param) - rfc2231_header = [] - - for part in parts: - name, value = part.split('=', 1) - # The code is incomplete. Continuations in rfc2231-encoded paramters - # (header*1, header*2, etc) are not yet supported - if (name == param) or (name == param + '*'): - new_value = rfc822.unquote(value) - rfc2231_encoded += (name <> param) - elif rfc2231_continuation.match(name): - rfc2231_header.append(rfc822.unquote(value)) - rfc2231_encoded = 1 - else: - new_parts.append(part) - - if rfc2231_header: - new_value = ''.join(rfc2231_header) - - if new_value is not None: - return "; ".join(new_parts), new_value, rfc2231_encoded - - return None, None, 0 - + unix_from = msg.get_unixfrom() + if unix_from: + output(unix_from + os.linesep) + for key, value in msg.items(): + output("%s: %s%s" % (key, value, os.linesep)) + output(os.linesep) # End of headers + + +def recode_if_needed(s, charset): + if charset and charset.lower() <> g.default_encoding: + s = unicode(s, charset, "replace").encode(g.default_encoding, "replace") + return s + + +def _decode_header(s): + """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: + if charset is None: + rtn.append(atom) + else: + rtn.append(recode_if_needed(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) def decode_header(msg, header): - "Decode mail header (if exists) and put it back, if it was encoded" + "Decode mail header (if exists) and put it back, if it was encoded" - if msg.has_key(header): - value = msg[header] - new_value = decode_rfc2047(value) - if value <> new_value: # do not bother to touch msg if not changed - msg[header] = new_value + 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) 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): - new_value, pstr, rfc2231_encoded = getparam(msg, header, param) - if pstr is not None: - if rfc2231_encoded: - new_str = decode_rfc2231(pstr) - else: - new_str = decode_rfc2047(pstr) - if pstr <> new_str: # do not bother to touch msg if not changed - msg[header] = "%s; %s=\"%s\"" % (new_value, param, new_str) - - -def decode_rfc2047(s): - "Decode string according to rfc2047" - - parts = s.split() # by whitespaces - new_parts = [] - got_encoded = 0 - - for s in parts: - l = s.split('?') - - if l[0] <> '=' or l[4] <> '=': # assert correct format - new_parts.append(' ') - new_parts.append(s) # if not encoded - just put it into output - got_encoded = 0 - continue - - if not got_encoded: - new_parts.append(' ') # no space between encoded parts, one space otherwise - got_encoded = 1 - - charset = l[1].lower() - encoding = l[2].lower() - s = l[3] - - if '*' in charset: - charset, language = charset.split('*', 1) # language ignored - - infile = StringIO(s) - outfile = StringIO() - - if encoding == "b": - from base64 import decode - elif encoding == "q": - from quopri import decode - else: - raise ValueError, "wrong encoding `%s' (expected 'b' or 'q')" % encoding - - decode(infile, outfile) - s = outfile.getvalue() - - if charset == GlobalOptions.default_charset: - new_parts.append(s) # do not recode - continue - - s = recode(s, charset) - new_parts.append(s) - - if new_parts and new_parts[0] == ' ': - del new_parts[0] - return ''.join(new_parts) - - -def decode_rfc2231(s): - "Decode string according to rfc2231" - - charset, language, s = s.split("'", 2) # language ignored - - i = 0 - result = [] - - while i < len(s): - c = s[i] - if c == '%': # hex - i += 1 - c = chr(int(s[i:i+2], 16)) - i += 1 - result.append(c) - i += 1 - - s = ''.join(result) - s = recode2(s, charset) - return s - + "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: + 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) - if header.lower() == "content-type" and msg.has_key(header): - # reparse type - msg.typeheader = msg[header] - msg.parsetype() # required for plist... - msg.parseplist() #... and reparse decoded plist + "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" + + if msg.has_key(header): + msg.replace_header(header, value) + else: + msg[header] = value def set_content_type(msg, newtype, charset=None): - plist = msg.getplist() - if plist: - if charset: - newplist = [] - for p in plist: - if p.split('=')[0] == "charset": - p = "charset=%s" % charset - newplist.append(p) - plist = newplist + msg.set_type(newtype) - elif charset: - plist = ["charset=%s" % charset] - - else: - plist = [] - - if plist and plist[0]: plist.insert(0, '') - msg["Content-Type"] = "%s%s" % (newtype, ";\n ".join(plist)) + 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.gettype() - 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 + "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 - file = open(filename, 'w') - file.write(s) - file.close() + if not command: + return s - pipe = os.popen(command, 'r') - s = pipe.read() - pipe.close() - os.remove(filename) + outfile = open(filename, 'wb') + outfile.write(s) + outfile.close() - set_content_type(msg, "text/plain") - msg["X-MIME-Body-Autoconverted"] = "from %s to text/plain by %s id %s" % (content_type, host_name, command.split()[0]) + pipe = os.popen(command, 'r') + s = pipe.read() + pipe.close() + os.remove(filename) - msg.maintype = "text" - msg.subtype = "plain" - msg.type = "text/plain" + 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]) - return s + return s def recode_charset(msg, s): - "Recode charset of the message to the default charset" - - save_charset = charset = msg.getparam("charset") - if charset and charset <> GlobalOptions.default_charset: - s = recode2(s, charset) - content_type = msg.gettype() - set_content_type(msg, content_type, GlobalOptions.default_charset) - msg["X-MIME-Charset-Autoconverted"] = "from %s to %s by %s id %s" % (save_charset, GlobalOptions.default_charset, host_name, me) - return s - - -def totext(msg, infile): - "Convert infile (StringIO) content to text" - - if msg.getmaintype() == "multipart": # Recursively decode all parts of the multipart message - newfile = StringIO("%s\n%s" % (msg, infile.getvalue())) - decode_file(newfile) - return - - # Decode body and recode charset - s = decode_body(msg, infile.getvalue()) - if GlobalOptions.recode_charset: - s = recode_charset(msg, s) - - output_headers(msg) - output(s) - - -def decode_part(msg, infile): - "Decode one part of the message" - - encoding = msg.getencoding() - outfile = StringIO() - - if encoding in ('', '7bit', '8bit', 'binary'): - mimetools.copyliteral(infile, outfile) - else: # Decode from transfer ecoding to text or binary form - mimetools.decode(infile, outfile, encoding) - msg["Content-Transfer-Encoding"] = "8bit" - msg["X-MIME-Autoconverted"] = "from %s to 8bit by %s id %s" % (encoding, host_name, me) - - decode_headers(msg) - - # Test all mask lists and find what to do with this content type - - for content_type in msg.gettype(), msg.getmaintype()+"/*", "*/*": - if content_type in GlobalOptions.totext_mask: - totext(msg, outfile) - return - elif content_type in GlobalOptions.binary_mask: - output_headers(msg) - output(outfile.getvalue()) - 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, outfile) - - -def decode_file(infile, seekable=1): - "Decode the entire message" - - m = mimetools.Message(infile) - boundary = m.getparam("boundary") - - if not boundary: - if not m.getheader("Content-Type"): # Not a message, just text - copy it literally - output(infile.read()) - - else: # Simple one-part message - decode it - decode_part(m, infile) - - else: # MIME message - decode all parts; may be recursive - decode_headers(m) - output_headers(m) - - import multifile - mf = multifile.MultiFile(infile, seekable) - mf.push(boundary) - - if not seekable: # Preserve the first part, it is probably not a RFC822-message - output(mf.read()) # Usually it is just a few lines of text (MIME warning) - - while 1: - m = mimetools.Message(mf) - decode_part(m, mf) - - if not mf.next(): + "Recode charset of the message to the default charset" + + 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" + + # 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) + output = outfile.write + 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) + + # 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 - output("\n--%s\n" % boundary) - mf.pop() - output("\n--%s--\n" % boundary) + 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.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 + elif 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: - default_charset = sys.getdefaultencoding() - recode_charset = 1 # recode charset of message body - - decode_headers = ["Subject", "From"] # 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_charset = 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 (skip, do not decode and do not include into output) + 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: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.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() - - seekable = 0 - if len(arguments) == 0: - infile = sys.stdin - elif len(arguments) <> 1: - usage(1) - elif arguments[0] == '-': - infile = sys.stdin - else: - infile = open(arguments[0], 'r') - seekable = 1 - - decode_file(infile, seekable) + 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 + 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()