-# Copyright (C) 2013, Eric Wong <normalperson@yhbt.net> and all contributors
+# Copyright (C) 2013-2015, all contributors <meta@public-inbox.org>
# License: AGPLv3 or later (https://www.gnu.org/licenses/agpl-3.0.txt)
package PublicInbox::Feed;
use strict;
use warnings;
-use XML::Atom::SimpleFeed;
-use Email::MIME;
use Email::Address;
-use URI::Escape qw/uri_escape/;
-use Encode qw/encode decode/;
-use Encode::MIME::Header;
-use CGI qw(escapeHTML);
-use POSIX qw(strftime);
+use Email::MIME;
use Date::Parse qw(strptime);
-use constant DATEFMT => '%Y-%m-%dT%H:%M:%SZ';
+use PublicInbox::Hval;
+use PublicInbox::GitCatFile;
use PublicInbox::View;
-use Mail::Thread;
+use PublicInbox::MID qw/mid_clean mid_compressed/;
+use constant {
+ DATEFMT => '%Y-%m-%dT%H:%M:%SZ', # atom standard
+ MAX_PER_PAGE => 25, # this needs to be tunable
+};
+
+use Encode qw/find_encoding/;
+my $enc_utf8 = find_encoding('UTF-8');
# main function
sub generate {
- my ($class, $args) = @_;
- my $max = $args->{max} || 25;
- my $top = $args->{top}; # bool
-
- local $ENV{GIT_DIR} = $args->{git_dir};
- my $feed_opts = get_feedopts($args);
-
- my $feed = XML::Atom::SimpleFeed->new(
- title => $feed_opts->{description} || "unnamed feed",
- link => $feed_opts->{url} || "http://example.com/",
- link => {
- rel => 'self',
- href => $feed_opts->{atomurl} ||
- "http://example.com/atom",
- },
- id => $feed_opts->{address} || 'public-inbox@example.com',
- updated => strftime(DATEFMT, gmtime),
- );
-
- each_recent_blob($max, sub {
- my ($add) = @_;
- add_to_feed($feed_opts, $feed, $add, $top);
- });
- $feed->as_string;
+ my ($ctx) = @_;
+ sub { emit_atom($_[0], $ctx) };
}
sub generate_html_index {
- my ($class, $args) = @_;
- my $max = $args->{max} || 50;
- my $top = $args->{top}; # bool
- local $ENV{GIT_DIR} = $args->{git_dir};
- my $feed_opts = get_feedopts($args);
- my $title = escapeHTML($feed_opts->{description} || "");
- my @messages;
- each_recent_blob($max, sub {
- my $str = `git cat-file blob $_[0]`;
- return 0 if $? != 0;
- my $simple = Email::Simple->new($str);
- if ($top && ($simple->header("In-Reply-To") ||
- $simple->header("References"))) {
- return 0;
+ my ($ctx) = @_;
+ sub { emit_html_index($_[0], $ctx) };
+}
+
+# private subs
+
+sub emit_atom {
+ my ($cb, $ctx) = @_;
+ require POSIX;
+ my $fh = $cb->([ 200, ['Content-Type' => 'application/xml']]);
+ my $max = $ctx->{max} || MAX_PER_PAGE;
+ my $feed_opts = get_feedopts($ctx);
+ my $addr = $feed_opts->{address};
+ $addr = $addr->[0] if ref($addr);
+ $addr ||= 'public-inbox@example.com';
+ my $title = $feed_opts->{description} || "unnamed feed";
+ $title = PublicInbox::Hval->new_oneline($title)->as_html;
+ my $type = index($title, '&') >= 0 ? "\ntype=\"html\"" : '';
+ my $url = $feed_opts->{url} || "http://example.com/";
+ my $atomurl = $feed_opts->{atomurl};
+ $fh->write(qq(<?xml version="1.0" encoding="us-ascii"?>\n) .
+ qq{<feed\nxmlns="http://www.w3.org/2005/Atom">} .
+ qq{<title$type>$title</title>} .
+ qq{<link\nhref="$url"/>} .
+ qq{<link\nrel="self"\nhref="$atomurl"/>} .
+ qq{<id>mailto:$addr</id>} .
+ '<updated>' . POSIX::strftime(DATEFMT, gmtime) . '</updated>');
+
+ my $git = PublicInbox::GitCatFile->new($ctx->{git_dir});
+ each_recent_blob($ctx, sub {
+ my ($add, undef) = @_;
+ add_to_feed($feed_opts, $fh, $add, $git);
+ });
+ $git = undef; # destroy pipes
+ Email::Address->purge_cache;
+ $fh->write("</feed>");
+ $fh->close;
+}
+
+
+sub emit_html_index {
+ my ($cb, $ctx) = @_;
+ my $fh = $cb->([200,['Content-Type'=>'text/html; charset=UTF-8']]);
+
+ my $max = $ctx->{max} || MAX_PER_PAGE;
+ my $feed_opts = get_feedopts($ctx);
+
+ my $title = $feed_opts->{description} || '';
+ $title = PublicInbox::Hval->new_oneline($title)->as_html;
+ my $atom_url = $feed_opts->{atomurl};
+
+ $fh->write("<html><head><title>$title</title>" .
+ "<link\nrel=alternate\ntitle=\"Atom feed\"\n".
+ "href=\"$atom_url\"\ntype=\"application/atom+xml\"/>" .
+ '</head><body>' . PublicInbox::View::PRE_WRAP .
+ "<b>$title</b> (<a\nhref=\"$atom_url\">Atom feed</a>)\n");
+
+ my $state;
+ my $git = PublicInbox::GitCatFile->new($ctx->{git_dir});
+ my $topics;
+ my $srch = $ctx->{srch};
+ $srch and $topics = [ [], {} ];
+ my (undef, $last) = each_recent_blob($ctx, sub {
+ my ($path, $commit, $ts, $u, $subj) = @_;
+ $state ||= [ undef, {}, $commit, 0 ];
+
+ if ($srch) {
+ add_topic($git, $srch, $topics, $path, $ts, $u, $subj);
+ } else {
+ my $mime = do_cat_mail($git, $path) or return 0;
+ PublicInbox::View::index_entry($fh, $mime, 0, $state);
+ 1;
}
- $simple->body_set(""); # save some memory
- push @messages, $simple;
- 1;
});
+ Email::Address->purge_cache;
+ $git = undef; # destroy pipes.
- my $th = Mail::Thread->new(@messages);
- $th->thread;
- my @args = (
- "<html><head><title>$title</title>" .
- '<link rel=alternate title=Atom.feed href="' .
- $feed_opts->{atomurl} . '" type="application/atom+xml"/>' .
- '</head><body><pre>');
- push @args, $feed_opts->{midurl};
- dump_html_line($_, 0, \@args) for $th->rootset;
- $args[0] . '</pre></html>';
+ my $footer = nav_footer($ctx->{cgi}, $last, $feed_opts, $state);
+ if ($footer) {
+ my $list_footer = $ctx->{footer};
+ $footer .= "\n" . $list_footer if $list_footer;
+ $footer = "<hr /><pre>$footer</pre>";
+ }
+ $fh->write(dump_topics($topics)) if $topics;
+ $fh->write("$footer</body></html>");
+ $fh->close;
}
-# private subs
+sub nav_footer {
+ my ($cgi, $last, $feed_opts, $state) = @_;
+ $cgi or return '';
+ my $old_r = $cgi->param('r');
+ my $head = ' ';
+ my $next = ' ';
+ # $state = [ undef, {}, $first_commit, $last_anchor ];
+ my $first = $state->[2];
+ my $anchor = $state->[3];
+
+ if ($last) {
+ $next = qq!<a\nhref="?r=$last">next</a>!;
+ }
+ if ($old_r) {
+ $head = $cgi->path_info;
+ $head = qq!<a\nhref="$head">head</a>!;
+ }
+ my $atom = "<a\nhref=\"$feed_opts->{atomurl}\">atom</a>";
+ my $permalink = "<a\nhref=\"?r=$first\">permalink</a>";
+ "<a\nname=\"s$anchor\">page:</a> $next $head $atom $permalink";
+}
sub each_recent_blob {
- my ($max, $cb) = @_;
+ my ($ctx, $cb) = @_;
+ my $max = $ctx->{max} || MAX_PER_PAGE;
+ my $hex = '[a-f0-9]';
+ my $addmsg = qr!^:000000 100644 \S+ \S+ A\t(${hex}{2}/${hex}{38})$!;
+ my $delmsg = qr!^:100644 000000 \S+ \S+ D\t(${hex}{2}/${hex}{38})$!;
+ my $refhex = qr/${hex}{4,40}(?:~\d+)?/;
+ my $cgi = $ctx->{cgi};
+
+ # revision ranges may be specified
+ my $range = 'HEAD';
+ my $r = $cgi->param('r') if $cgi;
+ if ($r && ($r =~ /\A(?:$refhex\.\.)?$refhex\z/o)) {
+ $range = $r;
+ }
# get recent messages
# we could use git log -z, but, we already know ssoma will not
# leave us with filenames with spaces in them..
- my $cmd = "git log --no-notes --no-color --raw -r --no-abbrev HEAD |";
- my $pid = open my $log, $cmd or die "open `$cmd' pipe failed: $!\n";
- my %deleted;
+ my @cmd = ('git', "--git-dir=$ctx->{git_dir}",
+ qw/log --no-notes --no-color --raw -r
+ --abbrev=16 --abbrev-commit/,
+ "--format=%h%x00%ct%x00%an%x00%s%x00");
+ push @cmd, $range;
+
+ my $pid = open(my $log, '-|', @cmd) or
+ die('open `'.join(' ', @cmd) . " pipe failed: $!\n");
+ my %deleted; # only an optimization at this point
+ my $last;
my $nr = 0;
- foreach my $line (<$log>) {
- if ($line =~ /^:000000 100644 0{40} ([a-f0-9]{40})/) {
+ my ($cur_commit, $first_commit, $last_commit);
+ my ($ts, $subj, $u);
+ while (defined(my $line = <$log>)) {
+ if ($line =~ /$addmsg/o) {
my $add = $1;
- next if $deleted{$add};
- $nr += $cb->($add);
- last if $nr >= $max;
- } elsif ($line =~ /^:100644 000000 ([a-f0-9]{40}) 0{40}/) {
+ next if $deleted{$add}; # optimization-only
+ $nr += $cb->($add, $cur_commit, $ts, $u, $subj);
+ if ($nr >= $max) {
+ $last = 1;
+ last;
+ }
+ } elsif ($line =~ /$delmsg/o) {
$deleted{$1} = 1;
+ } elsif ($line =~ /^${hex}{7,40}/o) {
+ ($cur_commit, $ts, $u, $subj) = split("\0", $line);
+ unless (defined $first_commit) {
+ $first_commit = $cur_commit;
+ }
}
}
- close $log;
+ if ($last) {
+ while (my $line = <$log>) {
+ if ($line =~ /^(${hex}{7,40})/o) {
+ $last_commit = $1;
+ last;
+ }
+ }
+ }
+
+ close $log; # we may EPIPE here
+ # for pagination
+ ($first_commit, $last_commit);
}
# private functions below
sub get_feedopts {
- my ($args) = @_;
- my $pi_config = $args->{pi_config};
- my $listname = $args->{listname};
- my $cgi = $args->{cgi};
+ my ($ctx) = @_;
+ my $pi_config = $ctx->{pi_config};
+ my $listname = $ctx->{listname};
+ my $cgi = $ctx->{cgi};
my %rv;
+ if (open my $fh, '<', "$ctx->{git_dir}/description") {
+ chomp($rv{description} = <$fh>);
+ close $fh;
+ }
if ($pi_config && defined $listname && length $listname) {
- foreach my $key (qw(description address)) {
+ foreach my $key (qw(address)) {
$rv{$key} = $pi_config->get($listname, $key) || "";
}
}
my $url_base;
if ($cgi) {
- my $cgi_url = $cgi->self_url;
- $url_base = $cgi_url;
+ my $path_info = $cgi->path_info;
+ my $base;
+ if (ref($cgi) eq 'CGI') {
+ $base = $cgi->url(-base);
+ } else {
+ $base = $cgi->base->as_string;
+ $base =~ s!/\z!!;
+ }
+ $url_base = $path_info;
if ($url_base =~ s!/(?:|index\.html)?\z!!) {
- $rv{atomurl} = "$url_base/index.atom.xml";
+ $rv{atomurl} = "$base$url_base/atom.xml";
} else {
- $url_base =~ s!/?(?:index|all)\.atom\.xml\z!!;
- $rv{atomurl} = $cgi_url;
+ $url_base =~ s!/atom\.xml\z!!;
+ $rv{atomurl} = $base . $path_info;
+ $url_base = $base . $url_base; # XXX is this needed?
}
} else {
$url_base = "http://example.com";
- $rv{atomurl} = "$url_base/index.atom.xml";
+ $rv{atomurl} = "$url_base/atom.xml";
}
$rv{url} ||= "$url_base/";
$rv{midurl} = "$url_base/m/";
\%rv;
}
-sub utf8_header {
- my ($simple, $name) = @_;
- my $val = $simple->header($name);
- return "" unless defined $val;
- $val =~ tr/\t\r\n / /s;
- encode('utf8', decode('MIME-Header', $val));
+sub mime_header {
+ my ($mime, $name) = @_;
+ PublicInbox::Hval->new_oneline($mime->header($name))->raw;
}
sub feed_date {
my ($date) = @_;
my @t = eval { strptime($date) };
- scalar(@t) ? strftime(DATEFMT, @t) : 0;
+ scalar(@t) ? POSIX::strftime(DATEFMT, @t) : 0;
}
# returns 0 (skipped) or 1 (added)
sub add_to_feed {
- my ($feed_opts, $feed, $add, $top) = @_;
-
- # we can use git cat-file --batch if performance becomes a
- # problem, but I doubt it...
- my $str = `git cat-file blob $add`;
- return 0 if $? != 0;
- my $mime = Email::MIME->new($str);
+ my ($feed_opts, $fh, $add, $git) = @_;
- if ($top && $mime->header("In-Reply-To")) {
- return 0;
- }
-
- my $midurl = $feed_opts->{midurl} || 'http://example.com/m/';
+ my $mime = do_cat_mail($git, $add) or return 0;
my $fullurl = $feed_opts->{fullurl} || 'http://example.com/f/';
- my $content = PublicInbox::View->as_feed_entry($mime, $fullurl);
+ my $header_obj = $mime->header_obj;
+ my $mid = $header_obj->header('Message-ID');
+ defined $mid or return 0;
+ $mid = PublicInbox::Hval->new_msgid($mid);
+ my $href = $mid->as_href . '.html';
+ my $content = PublicInbox::View->feed_entry($mime, $fullurl . $href);
defined($content) or return 0;
+ $mime = undef;
- my $mid = utf8_header($mime, "Message-ID") or return 0;
- $mid =~ s/\A<//; $mid =~ s/>\z//;
-
- my $subject = utf8_header($mime, "Subject") || "";
- length($subject) or return 0;
-
- my $from = utf8_header($mime, "From") or return 0;
+ my $title = mime_header($header_obj, 'Subject') or return 0;
+ $title = PublicInbox::Hval->new_oneline($title)->as_html;
+ my $type = index($title, '&') >= 0 ? "\ntype=\"html\"" : '';
+ my $from = mime_header($header_obj, 'From') or return 0;
my @from = Email::Address->parse($from);
- my $name = $from[0]->name;
- defined $name or $name = "";
+ my $name = PublicInbox::Hval->new_oneline($from[0]->name)->as_html;
my $email = $from[0]->address;
- defined $email or $email = "";
-
- my $url = $midurl . uri_escape($mid);
- my $date = utf8_header($mime, "Date");
- $date or return 0;
- $date = feed_date($date) or return 0;
- $feed->add_entry(
- author => { name => $name, email => $email },
- title => $subject,
- updated => $date,
- content => { type => "html", content => $content },
- link => $url,
- id => $add,
- );
+ $email = PublicInbox::Hval->new_oneline($email)->as_html;
+
+ my $date = $header_obj->header('Date');
+ $date = PublicInbox::Hval->new_oneline($date);
+ $date = feed_date($date->raw) or return 0;
+
+ $fh->write("<entry><author><name>$name</name><email>$email</email>" .
+ "</author><title$type>$title</title>" .
+ "<updated>$date</updated>" .
+ qq{<content\ntype="xhtml">} .
+ qq{<div\nxmlns="http://www.w3.org/1999/xhtml">});
+ $fh->write($content);
+
+ $add =~ tr!/!!d;
+ my $h = '[a-f0-9]';
+ my (@uuid5) = ($add =~ m!\A($h{8})($h{4})($h{4})($h{4})($h{12})!o);
+ my $id = 'urn:uuid:' . join('-', @uuid5);
+ my $midurl = $feed_opts->{midurl} || 'http://example.com/m/';
+ $fh->write(qq{</div></content><link\nhref="$midurl$href"/>}.
+ "<id>$id</id></entry>");
1;
}
-sub dump_html_line {
- my ($self, $level, $args) = @_; # args => [ $html, $midurl ]
- $args->[0] .= (' ' x $level);
- if ($self->message) {
- my $simple = $self->message;
- my $subj = utf8_header($simple, "Subject");
- my $mid = utf8_header($simple, "Message-ID");
- $mid =~ s/\A<//;
- $mid =~ s/>\z//;
- my $url = $args->[1] . uri_escape($mid);
- my $from = utf8_header($simple, "From");
- my @from = Email::Address->parse($from);
- $from = $from[0]->name;
- (defined($from) && length($from)) or $from = $from[0]->address;
- $from = escapeHTML($from);
- $subj = escapeHTML($subj);
- $args->[0] .= "<a href=\"$url.html\">`-> $subj</a> $from\n";
- } else {
- $args->[0] .= "[ Message not available ]\n";
+sub do_cat_mail {
+ my ($git, $path) = @_;
+ my $mime = eval {
+ my $str = $git->cat_file("HEAD:$path");
+ Email::MIME->new($str);
+ };
+ $@ ? undef : $mime;
+}
+
+# accumulate recent topics if search is supported
+sub add_topic {
+ my ($git, $srch, $topics, $path, $ts, $u, $subj) = @_;
+ my ($order, $subjs) = @$topics;
+ my $header_obj;
+
+ # legacy ssoma did not set commit titles based on Subject
+ $subj = $enc_utf8->decode($subj);
+ if ($subj eq 'mda') {
+ my $mime = do_cat_mail($git, $path) or return 0;
+ $header_obj = $mime->header_obj;
+ $subj = mime_header($header_obj, 'Subject');
+ }
+
+ $subj = $srch->subject_normalized($subj);
+ if (++$subjs->{$subj} == 1) {
+ unless ($header_obj) {
+ my $mime = do_cat_mail($git, $path) or return 0;
+ $header_obj = $mime->header_obj;
+ }
+ my $mid = $header_obj->header('Message-ID');
+ $mid = mid_compressed(mid_clean($mid));
+ $u = $enc_utf8->decode($u);
+ push @$order, [ $mid, $ts, $u, $subj ];
+ return 1;
+ }
+ 0; # old topic, continue going
+}
+
+sub dump_topics {
+ my ($topics) = @_;
+ my ($order, $subjs) = @$topics;
+ my $dst = '';
+ $dst .= "\n[No recent topics]" unless (scalar @$order);
+ while (defined(my $info = shift @$order)) {
+ my ($mid, $ts, $u, $subj) = @$info;
+ my $n = delete $subjs->{$subj};
+ $mid = PublicInbox::Hval->new($mid)->as_href;
+ $subj = PublicInbox::Hval->new($subj)->as_html;
+ $u = PublicInbox::Hval->new($u)->as_html;
+ $dst .= "\n<a\nhref=\"t/$mid.html#u\"><b>$subj</b></a>\n- ";
+ $ts = POSIX::strftime('%Y-%m-%d %H:%M', gmtime($ts));
+ if ($n == 1) {
+ $dst .= "created by $u @ $ts UTC\n"
+ } else {
+ # $n isn't the total number of posts on the topic,
+ # just the number of posts in the current "git log"
+ # window, so leave it unlabeled
+ $dst .= "updated by $u @ $ts UTC ($n)\n"
+ }
}
- dump_html_line($self->child, $level+1, $args) if $self->child;
- dump_html_line($self->next, $level, $args) if $self->next;
+ $dst .= '</pre>'
}
1;