package PublicInbox::View;
use strict;
use warnings;
-use CGI qw/escapeHTML escape/;
-use Encode qw/decode encode/;
+use URI::Escape qw/uri_escape_utf8/;
+use Date::Parse qw/str2time/;
+use Encode qw/find_encoding/;
use Encode::MIME::Header;
+use Email::MIME::ContentType qw/parse_content_type/;
+use PublicInbox::Hval;
+use PublicInbox::MID qw/mid_clean mid_compressed/;
+use Digest::SHA;
+require POSIX;
-# only one public function:
-sub as_html {
- my ($class, $mime, $full_pfx) = @_;
+# TODO: make these constants tunable
+use constant MAX_INLINE_QUOTED => 12; # half an 80x24 terminal
+use constant MAX_TRUNC_LEN => 72;
+use constant PRE_WRAP => "<pre\nstyle=\"white-space:pre-wrap\">";
+use constant T_ANCHOR => '#u';
+
+*ascii_html = *PublicInbox::Hval::ascii_html;
- headers_to_html_header($mime) .
+my $enc_utf8 = find_encoding('UTF-8');
+
+# public functions:
+sub msg_html {
+ my ($class, $mime, $full_pfx, $footer, $srch) = @_;
+ if (defined $footer) {
+ $footer = "\n" . $footer;
+ } else {
+ $footer = '';
+ }
+ headers_to_html_header($mime, $full_pfx) .
multipart_text_as_html($mime, $full_pfx) .
- "</pre>\n";
+ '</pre><hr />' . PRE_WRAP .
+ html_footer($mime, 1, $full_pfx, $srch) . $footer .
+ '</pre></body></html>';
+}
+
+sub feed_entry {
+ my ($class, $mime, $full_pfx) = @_;
+
+ PRE_WRAP . multipart_text_as_html($mime, $full_pfx) . '</pre>';
+}
+
+# this is already inside a <pre>
+# state = [ time, seen = {}, first_commit, page_nr = 0 ]
+sub index_entry {
+ my (undef, $mime, $level, $state) = @_;
+ my (undef, $seen, $first_commit) = @$state;
+ my $midx = $state->[3]++;
+ my ($prev, $next) = ($midx - 1, $midx + 1);
+ my $rv = '';
+ my $part_nr = 0;
+ my $enc_msg = enc_for($mime->header("Content-Type"));
+ my $subj = $mime->header('Subject');
+ my $header_obj = $mime->header_obj;
+
+ my $mid_raw = $header_obj->header_raw('Message-ID');
+ my $id = anchor_for($mid_raw);
+ $seen->{$id} = "#$id"; # save the anchor for later
+
+ my $mid = PublicInbox::Hval->new_msgid($mid_raw);
+ my $from = PublicInbox::Hval->new_oneline($mime->header('From'))->raw;
+ my @from = Email::Address->parse($from);
+ $from = $from[0]->name;
+ (defined($from) && length($from)) or $from = $from[0]->address;
+
+ $from = PublicInbox::Hval->new_oneline($from)->as_html;
+ $subj = PublicInbox::Hval->new_oneline($subj)->as_html;
+ my $pfx = (' ' x $level);
+ my $root_anchor = $seen->{root_anchor};
+ my $path;
+ my $more = 'permalink';
+ if ($root_anchor) {
+ $path = '../';
+ $subj = "<u\nid=\"u\">$subj</u>" if $root_anchor eq $id;
+ } else {
+ $path = '';
+ }
+
+ my $ts = $mime->header('X-PI-TS');
+ my $fmt = '%Y-%m-%d %H:%M UTC';
+ $ts = POSIX::strftime($fmt, gmtime($ts));
+
+ $rv .= "$pfx<b\nid=\"$id\">$subj</b>\n$pfx";
+ $rv .= "- by $from @ $ts - ";
+ $rv .= "<a\nid=\"s$midx\"\nhref=\"#s$next\">next</a>";
+ if ($prev >= 0) {
+ $rv .= "/<a\nhref=\"#s$prev\">prev</a>";
+ }
+ $rv .= "\n\n";
+
+ my $irt = $header_obj->header_raw('In-Reply-To');
+ my ($anchor_idx, $anchor, $t_anchor);
+ if (defined $irt) {
+ $anchor_idx = anchor_for($irt);
+ $anchor = $seen->{$anchor_idx};
+ $t_anchor = T_ANCHOR;
+ } else {
+ $t_anchor = '';
+ }
+ my $href = $mid->as_href;
+ my $mhref = "${path}m/$href.html";
+ my $fhref = "${path}f/$href.html";
+ # scan through all parts, looking for displayable text
+ $mime->walk_parts(sub {
+ $rv .= index_walk($_[0], $pfx, $enc_msg, $part_nr, $fhref,
+ \$more);
+ $part_nr++;
+ });
+
+ $rv .= "\n$pfx<a\nhref=\"$mhref\">$more</a> ";
+ my $txt = "${path}m/$href.txt";
+ $rv .= "<a\nhref=\"$txt\">raw</a> ";
+ $rv .= html_footer($mime, 0);
+
+ if (defined $irt) {
+ unless (defined $anchor) {
+ my $v = PublicInbox::Hval->new_msgid($irt);
+ $v = $v->as_href;
+ $anchor = "${path}m/$v.html";
+ $seen->{$anchor_idx} = $anchor;
+ }
+ $rv .= " <a\nhref=\"$anchor\">parent</a>";
+ }
+
+ if ($first_commit) {
+ $rv .= " <a\nhref=\"t/$href.html$t_anchor\">thread</a>";
+ }
+
+ $rv . "\n\n";
+}
+
+sub thread_html {
+ my (undef, $ctx, $foot, $srch) = @_;
+ my $mid = mid_compressed($ctx->{mid});
+ my $res = $srch->get_thread($mid);
+ my $rv = '';
+ require PublicInbox::GitCatFile;
+ my $git = PublicInbox::GitCatFile->new($ctx->{git_dir});
+ my $nr = scalar @{$res->{msgs}};
+ return $rv if $nr == 0;
+ my @msgs;
+ while (my $smsg = shift @{$res->{msgs}}) {
+ my $m = $smsg->mid;
+
+ # Duplicated from WWW.pm
+ my ($x2, $x38) = ($m =~ /\A([a-f0-9]{2})([a-f0-9]{38})\z/);
+
+ unless (defined $x38) {
+ require Digest::SHA;
+ $m = Digest::SHA::sha1_hex($m);
+ ($x2, $x38) = ($m =~ /\A([a-f0-9]{2})([a-f0-9]{38})\z/);
+ }
+
+ # FIXME: duplicated code from Feed.pm
+ my $mime = eval {
+ my $str = $git->cat_file("HEAD:$x2/$x38");
+ Email::MIME->new($str);
+ };
+ unless ($@) {
+ my $t = eval { str2time($mime->header('Date')) };
+ defined($t) or $t = 0;
+ $mime->header_set('X-PI-TS', $t);
+ push @msgs, $mime;
+ }
+ }
+ require PublicInbox::Thread;
+ my $th = PublicInbox::Thread->new(@msgs);
+ $th->thread;
+ $th->order(*PublicInbox::Thread::sort_ts);
+ my $state = [ undef, { root_anchor => anchor_for($mid) }, undef, 0 ];
+ thread_entry(\$rv, $state, $_, 0) for $th->rootset;
+ my $final_anchor = $state->[3];
+ my $next = "<a\nid=\"s$final_anchor\">end of thread</a>\n";
+
+ $rv .= "</pre><hr />" . PRE_WRAP . $next . $foot . "</pre>";
}
# only private functions below.
+sub index_walk {
+ my ($part, $pfx, $enc_msg, $part_nr, $fhref, $more) = @_;
+ my $rv = '';
+ return $rv if $part->subparts; # walk_parts already recurses
+ my $ct = $part->content_type;
+
+ # account for filter bugs...
+ return if defined $ct && $ct =~ m!\btext/[xh]+tml\b!i;
+
+ my $enc = enc_for($ct, $enc_msg);
+
+ if ($part_nr > 0) {
+ my $fn = $part->filename;
+ defined($fn) or $fn = "part #" . ($part_nr + 1);
+ $rv .= $pfx . add_filename_line($enc->decode($fn));
+ }
+
+ my $s = add_text_body_short($enc, $part, $part_nr, $fhref);
+
+ # drop the remainder of git patches, they're usually better
+ # to review when the full message is viewed
+ $s =~ s!^---+\n.*\z!!ms and $$more = 'more...';
+
+ # Drop signatures
+ $s =~ s/^-- \n.*\z//ms and $$more = 'more...';
+
+ # kill any leading or trailing whitespace
+ $s =~ s/\A\s+//s;
+ $s =~ s/\s+\z//s;
+
+ if (length $s) {
+ # add prefix:
+ $s =~ s/^/$pfx/sgm;
+
+ $rv .= $s . "\n";
+ }
+ $rv;
+}
+
+sub enc_for {
+ my ($ct, $default) = @_;
+ $default ||= $enc_utf8;
+ defined $ct or return $default;
+ my $ct_parsed = parse_content_type($ct);
+ if ($ct_parsed) {
+ if (my $charset = $ct_parsed->{attributes}->{charset}) {
+ my $enc = find_encoding($charset);
+ return $enc if $enc;
+ }
+ }
+ $default;
+}
+
sub multipart_text_as_html {
my ($mime, $full_pfx) = @_;
my $rv = "";
my $part_nr = 0;
+ my $enc_msg = enc_for($mime->header("Content-Type"));
# scan through all parts, looking for displayable text
$mime->walk_parts(sub {
my ($part) = @_;
return if $part->subparts; # walk_parts already recurses
+ my $ct = $part->content_type;
- my $part_type = $part->content_type;
- if ($part_type =~ m!\btext/[a-z0-9\+\._-]+\b!i) {
- my $fn = $part->filename;
+ # account for filter bugs...
+ return if defined $ct && $ct =~ m!\btext/[xh]+tml\b!i;
- if ($part_nr > 0) {
- defined($fn) or $fn = "part #" . ($part_nr + 1);
- $rv .= add_filename_line($fn);
- }
+ my $enc = enc_for($ct, $enc_msg);
- if (defined $full_pfx) {
- $rv .= add_text_body_short($part, $part_nr,
- $full_pfx);
- } else {
- $rv .= add_text_body_full($part, $part_nr);
- }
- $rv .= "\n" unless $rv =~ /\n\z/s;
+ if ($part_nr > 0) {
+ my $fn = $part->filename;
+ defined($fn) or $fn = "part #" . ($part_nr + 1);
+ $rv .= add_filename_line($enc->decode($fn));
+ }
+
+ if (defined $full_pfx) {
+ $rv .= add_text_body_short($enc, $part, $part_nr,
+ $full_pfx);
} else {
- $rv .= "-- part #" . ($part_nr + 1) . " ";
- $rv .= escapeHTML($part_type);
- $rv .= " skipped\n";
+ $rv .= add_text_body_full($enc, $part, $part_nr);
}
+ $rv .= "\n" unless $rv =~ /\n\z/s;
++$part_nr;
});
$rv;
$len -= length($fn);
$pad x= ($len/2) if ($len > 0);
- "$pad " . escapeHTML($fn) . " $pad\n";
+ "$pad " . ascii_html($fn) . " $pad\n";
+}
+
+my $LINK_RE = qr!\b((?:ftp|https?|nntp)://[@\w\+\&\?\.\%\;/#=-]+)!;
+
+sub linkify {
+ # no newlines added here since it'd break the splitting we do
+ # to fold quotes
+ $_[0] =~ s!$LINK_RE!<a href="$1">$1</a>!g;
}
sub add_text_body_short {
- my ($part, $part_nr, $full_pfx) = @_;
+ my ($enc, $part, $part_nr, $full_pfx) = @_;
my $n = 0;
- my $s = escapeHTML($part->body);
- $s =~ s!^((?:(?:>[^\n]+)\n)+)!
+ my $s = ascii_html($enc->decode($part->body));
+ linkify($s);
+ $s =~ s!^((?:(?:>[^\n]*)\n)+)!
my $cur = $1;
my @lines = split(/\n/, $cur);
- if (@lines > 1) {
+ if (@lines > MAX_INLINE_QUOTED) {
# show a short snippet of quoted text
$cur = join(' ', @lines);
- $cur =~ s/> ?//g;
+ $cur =~ s/^>\s*//;
my @sum = split(/\s+/, $cur);
$cur = '';
do {
- $cur .= shift(@sum) . ' ';
- } while (@sum && length($cur) < 68);
- $cur=~ s/ \z/ .../;
- "> <<a href=${full_pfx}#q${part_nr}_" . $n++ .
- ">$cur<\/a>>";
+ my $tmp = shift(@sum);
+ my $len = length($tmp) + length($cur);
+ if ($len > MAX_TRUNC_LEN) {
+ @sum = ();
+ } else {
+ $cur .= $tmp . ' ';
+ }
+ } while (@sum && length($cur) < MAX_TRUNC_LEN);
+ $cur =~ s/ \z/ .../;
+ "> <<a\nhref=\"${full_pfx}#q${part_nr}_" . $n++ .
+ "\">$cur<\/a>>\n";
} else {
$cur;
}
}
sub add_text_body_full {
- my ($part, $part_nr) = @_;
+ my ($enc, $part, $part_nr) = @_;
my $n = 0;
- my $s = escapeHTML($part->body);
- $s =~ s!^((?:(?:>[^\n]+)\n)+)!
+ my $s = ascii_html($enc->decode($part->body));
+ linkify($s);
+ $s =~ s!^((?:(?:>[^\n]*)\n)+)!
my $cur = $1;
my @lines = split(/\n/, $cur);
- if (@lines > 1) {
- "<a name=q${part_nr}_" . $n++ . ">$cur</a>";
+ if (@lines > MAX_INLINE_QUOTED) {
+ "<a\nid=q${part_nr}_" . $n++ . ">$cur</a>";
} else {
$cur;
}
$s;
}
-sub trim_message_id {
- my ($mid) = @_;
- $mid =~ tr/<>//d;
- my $html = escapeHTML($mid);
- my $href = escapeHTML(escape($mid));
-
- ($html, $href);
-}
-
sub headers_to_html_header {
- my ($simple) = @_;
+ my ($mime, $full_pfx) = @_;
my $rv = "";
my @title;
foreach my $h (qw(From To Cc Subject Date)) {
- my $v = $simple->header($h);
- defined $v or next;
- $v = decode("MIME-Header", $v);
- $v = encode("utf8", $v);
- $v = escapeHTML($v);
- $v =~ tr/\n/ /;
- $rv .= "$h: $v\n";
-
- if ($h eq "From" || $h eq "Subject") {
- push @title, $v;
+ my $v = $mime->header($h);
+ defined($v) && length($v) or next;
+ $v = PublicInbox::Hval->new_oneline($v);
+ $rv .= "$h: " . $v->as_html . "\n";
+
+ if ($h eq 'From') {
+ my @from = Email::Address->parse($v->raw);
+ $v = $from[0]->name;
+ unless (defined($v) && length($v)) {
+ $v = '<' . $from[0]->address . '>';
+ }
+ $title[1] = ascii_html($v);
+ } elsif ($h eq 'Subject') {
+ $title[0] = $v->as_html;
}
}
- my $mid = $simple->header('Message-ID');
- if (defined $mid) {
- my ($html, $href) = trim_message_id($mid);
- $rv .= "Message-ID: <a href=$href.html>$html</a> ";
- $rv .= "(<a href=$href.txt>raw message</a>)\n";
+ my $header_obj = $mime->header_obj;
+ my $mid = $header_obj->header_raw('Message-ID');
+ $mid = PublicInbox::Hval->new_msgid($mid);
+ $rv .= 'Message-ID: <' . $mid->as_html . '> ';
+ my $href = $mid->as_href;
+ $href = "../m/$href" unless $full_pfx;
+ $rv .= "(<a\nhref=\"$href.txt\">raw</a>)\n";
+
+ my $irt = $header_obj->header_raw('In-Reply-To');
+ if (defined $irt) {
+ my $v = PublicInbox::Hval->new_msgid($irt);
+ my $html = $v->as_html;
+ my $href = $v->as_href;
+ $rv .= "In-Reply-To: <";
+ $rv .= "<a\nhref=\"$href.html\">$html</a>>\n";
}
- my $irp = $simple->header('In-Reply-To');
- if (defined $irp) {
- my ($html, $href) = trim_message_id($irp);
- $rv .= "In-Reply-To: <a href=$href.html>$html</a>\n";
+ my $refs = $header_obj->header_raw('References');
+ if ($refs) {
+ $refs =~ s/\s*\Q$irt\E\s*// if (defined $irt);
+ my @refs = ($refs =~ /<([^>]+)>/g);
+ if (@refs) {
+ $rv .= 'References: '. linkify_refs(@refs) . "\n";
+ }
}
+
$rv .= "\n";
- return ("<html><head><title>".
- join(' - ', @title) .
- '</title></head><body><pre style="white-space:pre-wrap">' .
- $rv);
+ ("<html><head><title>". join(' - ', @title) .
+ '</title></head><body>' . PRE_WRAP . $rv);
+}
+
+sub html_footer {
+ my ($mime, $standalone, $full_pfx, $srch) = @_;
+ my %cc; # everyone else
+ my $to; # this is the From address
+
+ foreach my $h (qw(From To Cc)) {
+ my $v = $mime->header($h);
+ defined($v) && length($v) or next;
+ my @addrs = Email::Address->parse($v);
+ foreach my $recip (@addrs) {
+ my $address = $recip->address;
+ my $dst = lc($address);
+ $cc{$dst} ||= $address;
+ $to ||= $dst;
+ }
+ }
+ Email::Address->purge_cache if $standalone;
+
+ my $subj = $mime->header('Subject') || '';
+ $subj = "Re: $subj" unless $subj =~ /\bRe:/;
+ my $mid = $mime->header_obj->header_raw('Message-ID');
+ my $irt = uri_escape_utf8($mid);
+ delete $cc{$to};
+ $to = uri_escape_utf8($to);
+ $subj = uri_escape_utf8($subj);
+
+ my $cc = uri_escape_utf8(join(',', sort values %cc));
+ my $href = "mailto:$to?In-Reply-To=$irt&Cc=${cc}&Subject=$subj";
+
+ my $idx = $standalone ? " <a\nhref=\"../\">index</a>" : '';
+ if ($idx && $srch) {
+ $irt = $mime->header_obj->header_raw('In-Reply-To') || '';
+ $mid = mid_compressed(mid_clean($mid));
+ my $t_anchor = length $irt ? T_ANCHOR : '';
+ $idx = " <a\nhref=\"../t/$mid.html$t_anchor\">thread</a>$idx";
+ my $res = $srch->get_replies($mid);
+ if (my $c = $res->{count}) {
+ $c = $c == 1 ? '1 reply' : "$c replies";
+ $idx .= "\n$c:\n";
+ thread_replies(\$idx, $mime, $res);
+ } else {
+ $idx .= "\n(no replies yet)\n";
+ }
+ if ($irt) {
+ $irt = PublicInbox::Hval->new_msgid($irt);
+ $irt = $irt->as_href;
+ $irt = "<a\nhref=\"$irt\">parent</a> ";
+ } else {
+ $irt = ' ' x length('parent ');
+ }
+ } else {
+ $irt = '';
+ }
+
+ "$irt<a\nhref=\"" . ascii_html($href) . '">reply</a>' . $idx;
+}
+
+sub linkify_refs {
+ join(' ', map {
+ my $v = PublicInbox::Hval->new_msgid($_);
+ my $html = $v->as_html;
+ my $href = $v->as_href;
+ "<<a\nhref=\"$href.html\">$html</a>>";
+ } @_);
+}
+
+sub anchor_for {
+ my ($msgid) = @_;
+ 'm' . mid_compressed(mid_clean($msgid));
+}
+
+sub simple_dump {
+ my ($dst, $root, $node, $level) = @_;
+ my $pfx = ' ' x $level;
+ $$dst .= $pfx;
+ if (my $x = $node->message) {
+ my $mid = $x->header('Message-ID');
+ if ($root->[0] ne $mid) {
+ my $s = $x->header('Subject');
+ my $h = hash_subj($s);
+ if ($root->[1]->{$h}) {
+ $s = '';
+ } else {
+ $root->[1]->{$h} = 1;
+ $s = PublicInbox::Hval->new($s);
+ $s = $s->as_html;
+ }
+ my $m = PublicInbox::Hval->new_msgid($mid);
+ my $f = PublicInbox::Hval->new($x->header('X-PI-From'));
+ my $d = PublicInbox::Hval->new($x->header('X-PI-Date'));
+ $m = $m->as_href . '.html';
+ $f = $f->as_html;
+ $d = $d->as_html . ' UTC';
+ if (length($s) == 0) {
+ $$dst .= "` <a\nhref=\"$m\">$f @ $d</a>\n";
+ } else {
+ $$dst .= "` <a\nhref=\"$m\">$s</a>\n" .
+ "$pfx by $f @ $d\n";
+ }
+ }
+ }
+ simple_dump($dst, $root, $node->child, $level + 1) if $node->child;
+ simple_dump($dst, $root, $node->next, $level) if $node->next;
+}
+
+sub hash_subj {
+ my ($subj) = @_;
+ $subj =~ s/\A\s+//;
+ $subj =~ s/\s+\z//;
+ $subj =~ s/^(?:re|aw):\s*//i; # remove reply prefix (aw: German)
+ $subj =~ s/\s+/ /;
+ Digest::SHA::sha1($subj);
+}
+
+sub thread_replies {
+ my ($dst, $root, $res) = @_;
+ my @msgs = map { $_->mini_mime } @{$res->{msgs}};
+ require PublicInbox::Thread;
+ $root->header_set('X-PI-TS', '0');
+ my $th = PublicInbox::Thread->new($root, @msgs);
+ $th->thread;
+ $th->order(*PublicInbox::Thread::sort_ts);
+ $root = [ $root->header('Message-ID'),
+ { hash_subj($root->header('Subject')) => 1 } ];
+ simple_dump($dst, $root, $_, 0) for $th->rootset;
+}
+
+sub thread_html_head {
+ my ($mime) = @_;
+ my $s = PublicInbox::Hval->new_oneline($mime->header('Subject'));
+ $s = $s->as_html;
+ "<html><head><title>$s</title></head><body>" . PRE_WRAP
+
+}
+
+sub thread_entry {
+ my ($dst, $state, $node, $level) = @_;
+ # $state = [ $search_res, $seen, undef, 0 (msg_nr) ];
+ # $seen is overloaded with 3 types of fields:
+ # 1) "root" => Message-ID,
+ # 2) seen subject hashes: sha1(subject) => 1
+ # 3) anchors hashes: "#$sha1_hex" (same as $seen in index_entry)
+ if (my $mime = $node->message) {
+ if (length($$dst) == 0) {
+ $$dst .= thread_html_head($mime);
+ }
+ $$dst .= index_entry(undef, $mime, $level, $state);
+ }
+ thread_entry($dst, $state, $node->child, $level + 1) if $node->child;
+ thread_entry($dst, $state, $node->next, $level) if $node->next;
}
1;