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Diffstat (limited to 'Lib/mimify.py')
| -rwxr-xr-x | Lib/mimify.py | 464 |
1 files changed, 0 insertions, 464 deletions
diff --git a/Lib/mimify.py b/Lib/mimify.py deleted file mode 100755 index 6609e80..0000000 --- a/Lib/mimify.py +++ /dev/null @@ -1,464 +0,0 @@ -#! /usr/bin/env python - -"""Mimification and unmimification of mail messages. - -Decode quoted-printable parts of a mail message or encode using -quoted-printable. - -Usage: - mimify(input, output) - unmimify(input, output, decode_base64 = 0) -to encode and decode respectively. Input and output may be the name -of a file or an open file object. Only a readline() method is used -on the input file, only a write() method is used on the output file. -When using file names, the input and output file names may be the -same. - -Interactive usage: - mimify.py -e [infile [outfile]] - mimify.py -d [infile [outfile]] -to encode and decode respectively. Infile defaults to standard -input and outfile to standard output. -""" - -# Configure -MAXLEN = 200 # if lines longer than this, encode as quoted-printable -CHARSET = 'ISO-8859-1' # default charset for non-US-ASCII mail -QUOTE = '> ' # string replies are quoted with -# End configure - -import re - -__all__ = ["mimify","unmimify","mime_encode_header","mime_decode_header"] - -qp = re.compile('^content-transfer-encoding:\\s*quoted-printable', re.I) -base64_re = re.compile('^content-transfer-encoding:\\s*base64', re.I) -mp = re.compile('^content-type:.*multipart/.*boundary="?([^;"\n]*)', re.I|re.S) -chrset = re.compile('^(content-type:.*charset=")(us-ascii|iso-8859-[0-9]+)(".*)', re.I|re.S) -he = re.compile('^-*\n') -mime_code = re.compile('=([0-9a-f][0-9a-f])', re.I) -mime_head = re.compile('=\\?iso-8859-1\\?q\\?([^? \t\n]+)\\?=', re.I) -repl = re.compile('^subject:\\s+re: ', re.I) - -class File: - """A simple fake file object that knows about limited read-ahead and - boundaries. The only supported method is readline().""" - - def __init__(self, file, boundary): - self.file = file - self.boundary = boundary - self.peek = None - - def readline(self): - if self.peek is not None: - return '' - line = self.file.readline() - if not line: - return line - if self.boundary: - if line == self.boundary + '\n': - self.peek = line - return '' - if line == self.boundary + '--\n': - self.peek = line - return '' - return line - -class HeaderFile: - def __init__(self, file): - self.file = file - self.peek = None - - def readline(self): - if self.peek is not None: - line = self.peek - self.peek = None - else: - line = self.file.readline() - if not line: - return line - if he.match(line): - return line - while 1: - self.peek = self.file.readline() - if len(self.peek) == 0 or \ - (self.peek[0] != ' ' and self.peek[0] != '\t'): - return line - line = line + self.peek - self.peek = None - -def mime_decode(line): - """Decode a single line of quoted-printable text to 8bit.""" - newline = '' - pos = 0 - while 1: - res = mime_code.search(line, pos) - if res is None: - break - newline = newline + line[pos:res.start(0)] + \ - chr(int(res.group(1), 16)) - pos = res.end(0) - return newline + line[pos:] - -def mime_decode_header(line): - """Decode a header line to 8bit.""" - newline = '' - pos = 0 - while 1: - res = mime_head.search(line, pos) - if res is None: - break - match = res.group(1) - # convert underscores to spaces (before =XX conversion!) - match = ' '.join(match.split('_')) - newline = newline + line[pos:res.start(0)] + mime_decode(match) - pos = res.end(0) - return newline + line[pos:] - -def unmimify_part(ifile, ofile, decode_base64 = 0): - """Convert a quoted-printable part of a MIME mail message to 8bit.""" - multipart = None - quoted_printable = 0 - is_base64 = 0 - is_repl = 0 - if ifile.boundary and ifile.boundary[:2] == QUOTE: - prefix = QUOTE - else: - prefix = '' - - # read header - hfile = HeaderFile(ifile) - while 1: - line = hfile.readline() - if not line: - return - if prefix and line[:len(prefix)] == prefix: - line = line[len(prefix):] - pref = prefix - else: - pref = '' - line = mime_decode_header(line) - if qp.match(line): - quoted_printable = 1 - continue # skip this header - if decode_base64 and base64_re.match(line): - is_base64 = 1 - continue - ofile.write(pref + line) - if not prefix and repl.match(line): - # we're dealing with a reply message - is_repl = 1 - mp_res = mp.match(line) - if mp_res: - multipart = '--' + mp_res.group(1) - if he.match(line): - break - if is_repl and (quoted_printable or multipart): - is_repl = 0 - - # read body - while 1: - line = ifile.readline() - if not line: - return - line = re.sub(mime_head, '\\1', line) - if prefix and line[:len(prefix)] == prefix: - line = line[len(prefix):] - pref = prefix - else: - pref = '' -## if is_repl and len(line) >= 4 and line[:4] == QUOTE+'--' and line[-3:] != '--\n': -## multipart = line[:-1] - while multipart: - if line == multipart + '--\n': - ofile.write(pref + line) - multipart = None - line = None - break - if line == multipart + '\n': - ofile.write(pref + line) - nifile = File(ifile, multipart) - unmimify_part(nifile, ofile, decode_base64) - line = nifile.peek - if not line: - # premature end of file - break - continue - # not a boundary between parts - break - if line and quoted_printable: - while line[-2:] == '=\n': - line = line[:-2] - newline = ifile.readline() - if newline[:len(QUOTE)] == QUOTE: - newline = newline[len(QUOTE):] - line = line + newline - line = mime_decode(line) - if line and is_base64 and not pref: - import base64 - line = base64.decodestring(line) - if line: - ofile.write(pref + line) - -def unmimify(infile, outfile, decode_base64 = 0): - """Convert quoted-printable parts of a MIME mail message to 8bit.""" - if type(infile) == type(''): - ifile = open(infile) - if type(outfile) == type('') and infile == outfile: - import os - d, f = os.path.split(infile) - os.rename(infile, os.path.join(d, ',' + f)) - else: - ifile = infile - if type(outfile) == type(''): - ofile = open(outfile, 'w') - else: - ofile = outfile - nifile = File(ifile, None) - unmimify_part(nifile, ofile, decode_base64) - ofile.flush() - -mime_char = re.compile('[=\177-\377]') # quote these chars in body -mime_header_char = re.compile('[=?\177-\377]') # quote these in header - -def mime_encode(line, header): - """Code a single line as quoted-printable. - If header is set, quote some extra characters.""" - if header: - reg = mime_header_char - else: - reg = mime_char - newline = '' - pos = 0 - if len(line) >= 5 and line[:5] == 'From ': - # quote 'From ' at the start of a line for stupid mailers - newline = ('=%02x' % ord('F')).upper() - pos = 1 - while 1: - res = reg.search(line, pos) - if res is None: - break - newline = newline + line[pos:res.start(0)] + \ - ('=%02x' % ord(res.group(0))).upper() - pos = res.end(0) - line = newline + line[pos:] - - newline = '' - while len(line) >= 75: - i = 73 - while line[i] == '=' or line[i-1] == '=': - i = i - 1 - i = i + 1 - newline = newline + line[:i] + '=\n' - line = line[i:] - return newline + line - -mime_header = re.compile('([ \t(]|^)([-a-zA-Z0-9_+]*[\177-\377][-a-zA-Z0-9_+\177-\377]*)(?=[ \t)]|\n)') - -def mime_encode_header(line): - """Code a single header line as quoted-printable.""" - newline = '' - pos = 0 - while 1: - res = mime_header.search(line, pos) - if res is None: - break - newline = '%s%s%s=?%s?Q?%s?=' % \ - (newline, line[pos:res.start(0)], res.group(1), - CHARSET, mime_encode(res.group(2), 1)) - pos = res.end(0) - return newline + line[pos:] - -mv = re.compile('^mime-version:', re.I) -cte = re.compile('^content-transfer-encoding:', re.I) -iso_char = re.compile('[\177-\377]') - -def mimify_part(ifile, ofile, is_mime): - """Convert an 8bit part of a MIME mail message to quoted-printable.""" - has_cte = is_qp = is_base64 = 0 - multipart = None - must_quote_body = must_quote_header = has_iso_chars = 0 - - header = [] - header_end = '' - message = [] - message_end = '' - # read header - hfile = HeaderFile(ifile) - while 1: - line = hfile.readline() - if not line: - break - if not must_quote_header and iso_char.search(line): - must_quote_header = 1 - if mv.match(line): - is_mime = 1 - if cte.match(line): - has_cte = 1 - if qp.match(line): - is_qp = 1 - elif base64_re.match(line): - is_base64 = 1 - mp_res = mp.match(line) - if mp_res: - multipart = '--' + mp_res.group(1) - if he.match(line): - header_end = line - break - header.append(line) - - # read body - while 1: - line = ifile.readline() - if not line: - break - if multipart: - if line == multipart + '--\n': - message_end = line - break - if line == multipart + '\n': - message_end = line - break - if is_base64: - message.append(line) - continue - if is_qp: - while line[-2:] == '=\n': - line = line[:-2] - newline = ifile.readline() - if newline[:len(QUOTE)] == QUOTE: - newline = newline[len(QUOTE):] - line = line + newline - line = mime_decode(line) - message.append(line) - if not has_iso_chars: - if iso_char.search(line): - has_iso_chars = must_quote_body = 1 - if not must_quote_body: - if len(line) > MAXLEN: - must_quote_body = 1 - - # convert and output header and body - for line in header: - if must_quote_header: - line = mime_encode_header(line) - chrset_res = chrset.match(line) - if chrset_res: - if has_iso_chars: - # change us-ascii into iso-8859-1 - if chrset_res.group(2).lower() == 'us-ascii': - line = '%s%s%s' % (chrset_res.group(1), - CHARSET, - chrset_res.group(3)) - else: - # change iso-8859-* into us-ascii - line = '%sus-ascii%s' % chrset_res.group(1, 3) - if has_cte and cte.match(line): - line = 'Content-Transfer-Encoding: ' - if is_base64: - line = line + 'base64\n' - elif must_quote_body: - line = line + 'quoted-printable\n' - else: - line = line + '7bit\n' - ofile.write(line) - if (must_quote_header or must_quote_body) and not is_mime: - ofile.write('Mime-Version: 1.0\n') - ofile.write('Content-Type: text/plain; ') - if has_iso_chars: - ofile.write('charset="%s"\n' % CHARSET) - else: - ofile.write('charset="us-ascii"\n') - if must_quote_body and not has_cte: - ofile.write('Content-Transfer-Encoding: quoted-printable\n') - ofile.write(header_end) - - for line in message: - if must_quote_body: - line = mime_encode(line, 0) - ofile.write(line) - ofile.write(message_end) - - line = message_end - while multipart: - if line == multipart + '--\n': - # read bit after the end of the last part - while 1: - line = ifile.readline() - if not line: - return - if must_quote_body: - line = mime_encode(line, 0) - ofile.write(line) - if line == multipart + '\n': - nifile = File(ifile, multipart) - mimify_part(nifile, ofile, 1) - line = nifile.peek - if not line: - # premature end of file - break - ofile.write(line) - continue - # unexpectedly no multipart separator--copy rest of file - while 1: - line = ifile.readline() - if not line: - return - if must_quote_body: - line = mime_encode(line, 0) - ofile.write(line) - -def mimify(infile, outfile): - """Convert 8bit parts of a MIME mail message to quoted-printable.""" - if type(infile) == type(''): - ifile = open(infile) - if type(outfile) == type('') and infile == outfile: - import os - d, f = os.path.split(infile) - os.rename(infile, os.path.join(d, ',' + f)) - else: - ifile = infile - if type(outfile) == type(''): - ofile = open(outfile, 'w') - else: - ofile = outfile - nifile = File(ifile, None) - mimify_part(nifile, ofile, 0) - ofile.flush() - -import sys -if __name__ == '__main__' or (len(sys.argv) > 0 and sys.argv[0] == 'mimify'): - import getopt - usage = 'Usage: mimify [-l len] -[ed] [infile [outfile]]' - - decode_base64 = 0 - opts, args = getopt.getopt(sys.argv[1:], 'l:edb') - if len(args) not in (0, 1, 2): - print(usage) - sys.exit(1) - if (('-e', '') in opts) == (('-d', '') in opts) or \ - ((('-b', '') in opts) and (('-d', '') not in opts)): - print(usage) - sys.exit(1) - for o, a in opts: - if o == '-e': - encode = mimify - elif o == '-d': - encode = unmimify - elif o == '-l': - try: - MAXLEN = int(a) - except (ValueError, OverflowError): - print(usage) - sys.exit(1) - elif o == '-b': - decode_base64 = 1 - if len(args) == 0: - encode_args = (sys.stdin, sys.stdout) - elif len(args) == 1: - encode_args = (args[0], sys.stdout) - else: - encode_args = (args[0], args[1]) - if decode_base64: - encode_args = encode_args + (decode_base64,) - encode(*encode_args) |