6 use vars qw($VERSION @EXPORT_OK);
11 @EXPORT_OK = qw(parse decode_rfc1522 encode_rfc1522 convert_to_utf8 create_mime_message);
18 use MIME::WordDecoder qw();
19 use Encode qw(decode encode encode_utf8 decode_utf8 is_utf8);
28 my $type = $entity->effective_type;
29 if ($type eq 'text/plain' or
30 ($type =~ m#text/# and $type ne 'text/html') or
31 $type eq 'application/pgp') {
32 return $entity->bodyhandle;
33 } elsif ($type eq 'multipart/alternative') {
34 # RFC 2046 says we should use the last part we recognize.
35 for my $part (reverse $entity->parts) {
36 my $ret = getmailbody($part);
40 # For other multipart types, we just pretend they're
41 # multipart/mixed and run through in order.
42 for my $part ($entity->parts) {
43 my $ret = getmailbody($part);
52 # header and decoded body respectively
53 my (@headerlines, @bodylines);
55 my $parser = new MIME::Parser;
56 mkdir "mime.tmp.$$", 0777;
57 $parser->output_under("mime.tmp.$$");
58 my $entity = eval { $parser->parse_data($_[0]) };
60 if ($entity and $entity->head->tags) {
61 @headerlines = @{$entity->head->header};
64 my $entity_body = getmailbody($entity);
65 @bodylines = $entity_body ? $entity_body->as_lines() : ();
68 # Legacy pre-MIME code, kept around in case MIME::Parser fails.
69 my @msg = split /\n/, $_[0];
72 for ($i = 0; $i <= $#msg; ++$i) {
75 while ($msg[$i + 1] =~ /^\s/) {
77 $_ .= "\n" . $msg[$i];
79 push @headerlines, $_;
82 @bodylines = @msg[$i .. $#msg];
85 rmtree "mime.tmp.$$", 0, 1;
88 shift @bodylines while @bodylines and $bodylines[0] !~ /\S/;
90 # Strip off RFC2440-style PGP clearsigning.
91 if (@bodylines and $bodylines[0] =~ /^-----BEGIN PGP SIGNED/) {
92 shift @bodylines while @bodylines and length $bodylines[0];
93 shift @bodylines while @bodylines and $bodylines[0] !~ /\S/;
94 for my $findsig (0 .. $#bodylines) {
95 if ($bodylines[$findsig] =~ /^-----BEGIN PGP SIGNATURE/) {
96 $#bodylines = $findsig - 1;
100 map { s/^- // } @bodylines;
103 return { header => [@headerlines], body => [@bodylines]};
106 =head2 create_mime_message
108 create_mime_message([To=>'don@debian.org'],$body,[$attach1, $attach2]);
110 Creates a MIME encoded message with headers given by the first
111 argument, and a message given by the second.
113 Optional attachments can be specified in the third arrayref argument.
115 Headers are passed directly to MIME::Entity::build, the message is the
118 Each of the elements of the attachment arrayref is attached as an
119 rfc822 message if it is a scalar or an arrayref; otherwise if it is a
120 hashref, the contents are passed as an argument to
125 sub create_mime_message{
126 my ($headers,$body,$attachments) = @_;
127 $attachments = [] if not defined $attachments;
129 die "The first argument to create_mime_message must be an arrayref" unless ref($headers) eq 'ARRAY';
130 die "The third argument to create_mime_message must be an arrayref" unless ref($attachments) eq 'ARRAY';
133 my $msg = MIME::Entity->build(@{$headers},
137 # Attach the attachments
138 for my $attachment (@{$attachments}) {
139 if (ref($attachment) eq 'HASH') {
140 $msg->attach(%{$attachment});
143 $msg->attach(Type => 'message/rfc822',
148 return $msg->as_string;
154 sub convert_to_utf8 {
155 my ($data, $charset) = @_;
156 # raw data just gets returned (that's the charset WordDecorder
157 # uses when it doesn't know what to do)
158 return $data if $charset eq 'raw' or is_utf8($data,1);
161 # this encode/decode madness is to make sure that the data
162 # really is valid utf8 and that the is_utf8 flag is off.
163 $result = encode("utf8",decode($charset,$data))
166 warn "Unable to decode charset; '$charset' and '$data': $@";
173 =head2 decode_rfc1522
175 decode_rfc1522('=?iso-8859-1?Q?D=F6n_Armstr=F3ng?= <don@donarmstrong.com>')
177 Turn RFC-1522 names into the UTF-8 equivalent.
182 # Set up the default RFC1522 decoder, which turns all charsets that
183 # are supported into the appropriate UTF-8 charset.
184 MIME::WordDecoder->default(new MIME::WordDecoder(
185 ['*' => \&convert_to_utf8,
189 sub decode_rfc1522 ($)
193 # unmime calls the default MIME::WordDecoder handler set up at
194 # initialization time.
195 return MIME::WordDecoder::unmime($string);
198 =head2 encode_rfc1522
200 encode_rfc1522('Dön Armströng <don@donarmstrong.com>')
202 Encodes headers according to the RFC1522 standard by calling
203 MIME::Words::encode_mimeword on distinct words as appropriate.
207 # We cannot use MIME::Words::encode_mimewords because that function
208 # does not handle spaces properly at all.
210 sub encode_rfc1522 ($) {
213 # We process words in reverse so we can preserve spacing between
214 # encoded words. This regex splits on word|nonword boundaries and
215 # nonword|nonword boundaries.
216 my @words = reverse split /(?:(?<=[\s\n])|(?=[\s\n]))/m, $rawstr;
218 my $previous_word_encoded = 0;
220 for my $word (@words) {
221 if ($word !~ m#[\x00-\x1F\x7F-\xFF]#o and $word ne ' ') {
222 $string = $word.$string;
223 $previous_word_encoded=0;
225 elsif ($word =~ /^[\s\n]$/) {
226 $string = $word.$string;
227 $previous_word_encoded = 0 if $word eq "\n";
230 my $encoded = MIME::Words::encode_mimeword($word, 'q', 'UTF-8');
231 # RFC 1522 mandates that segments be at most 76 characters
232 # long. If that's the case, we split the word up into 10
233 # character pieces and encode it. We must use the Encode
234 # magic here to avoid breaking on bit boundaries here.
235 if (length $encoded > 75) {
236 # Turn utf8 into the internal perl representation
237 # so . is a character, not a byte.
238 my $tempstr = decode_utf8($word,Encode::FB_DEFAULT);
240 # Strip it into 10 character long segments, and encode
242 # XXX It's possible that these segments are > 76 characters
243 while ($tempstr =~ s/(.{1,10})$//) {
244 # turn the character back into the utf8 representation.
245 my $tempword = encode_utf8($1);
246 # It may actually be better to eventually use
247 # the base64 encoding here, but I'm not sure
248 # if that's as widely supported as quoted
250 unshift @encoded, MIME::Words::encode_mimeword($tempword,'q','UTF-8');
252 $encoded = join(" ",@encoded);
253 # If the previous word was encoded, we must
254 # include a trailing _ that gets encoded as a
256 $encoded =~ s/\?\=$/_\?\=/ if $previous_word_encoded;
257 $string = $encoded.$string;
260 # If the previous word was encoded, we must
261 # include a trailing _ that gets encoded as a
263 $encoded =~ s/\?\=$/_\?\=/ if $previous_word_encoded;
264 $string = $encoded.$string;
266 $previous_word_encoded = 1;