4 # @brief Extract HTML from an RFC-822 email
6 # Copyright (C) 2010,2015,2018,2019,2023 Olly Betts
8 # Permission is hereby granted, free of charge, to any person obtaining a copy
9 # of this software and associated documentation files (the "Software"), to
10 # deal in the Software without restriction, including without limitation the
11 # rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
12 # sell copies of the Software, and to permit persons to whom the Software is
13 # furnished to do so, subject to the following conditions:
15 # The above copyright notice and this permission notice shall be included in
16 # all copies or substantial portions of the Software.
18 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19 # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
21 # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
22 # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
23 # FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
29 require MIME::WordDecoder;
30 require HTML::Entities;
31 # In core since Perl 5.9.5:
36 # Exit with code 127 which omindex interprets as "filter not installed"
37 # and won't try further .msg files.
42 my $parser = new MIME::Parser;
43 # Keep data in memory rather than spraying files onto disk.
44 $parser->output_to_core(1);
45 $parser->tmp_to_core(1);
46 open IN, '<', $in or die "Couldn't open '$in' ($?)\n";
47 my $ent = $parser->parse(\*IN) or die "Failed to parse '$in' as MIME message\n";
49 my $head = $ent->head;
50 print "<head>\n<title>";
51 print do_header($head, 'Subject');
52 print "</title>\n<meta name=\"author\" content=\"";
53 print do_header($head, 'From');
56 my $date = do_header($head, 'Date');
60 $date = Time::Piece->strptime($date, '%a, %d %b %Y %T %z');
62 # The "%a, " part is optional in RFC822 and RFC2822.
63 $date = Time::Piece->strptime($date, '%d %b %Y %T %z') if $@;
64 my $iso8601_date = $date->datetime;
65 print "<meta name=\"created\" content=\"$iso8601_date\">\n";
72 handle_mimepart($ent);
75 my ($head, $header) = @_;
76 my $s = MIME::WordDecoder::mime_to_perl_string($head->get($header, 0));
78 return HTML::Entities::encode_entities($s);
83 my ($type, $sub) = ((lc $e->mime_type) =~ m,^(.*?)/(.*?)(?:;.*)?$,);
84 if ($type eq 'multipart') {
85 if ($sub eq 'alternative') {
86 # Take the last mime part which we get text from.
87 for my $s (reverse $e->parts) {
88 my $res = handle_mimepart($s);
93 for my $s ($e->parts) {
94 $res += handle_mimepart($s);
98 } elsif ($type eq 'text') {
99 if ($sub eq 'plain') {
100 my $m = $e->bodyhandle->as_string;
101 print "<pre>", HTML::Entities::encode_entities($m), "</pre>\n";
103 } elsif ($sub eq 'html') {
104 my $m = $e->bodyhandle->as_string;
105 $m =~ s!</?body[^>]*>!\n!gi;