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| | # Copyright (C) 2016-2020 all contributors <meta@public-inbox.org>
# License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
#
# HTML body stream for which yields getline+close methods for
# generic PSGI servers and callbacks for public-inbox-httpd.
#
# See PublicInbox::GzipFilter parent class for more info.
package PublicInbox::WwwStream;
use strict;
use parent qw(Exporter PublicInbox::GzipFilter);
our @EXPORT_OK = qw(html_oneshot);
use bytes (); # length
use PublicInbox::Hval qw(ascii_html prurl ts2str);
our $TOR_URL = 'https://www.torproject.org/';
our $CODE_URL = 'https://public-inbox.org/public-inbox.git';
sub base_url ($) {
my $ctx = shift;
my $base_url = $ctx->{-inbox}->base_url($ctx->{env});
chop $base_url; # no trailing slash for clone
$base_url;
}
sub init {
my ($ctx, $cb) = @_;
$ctx->{cb} = $cb;
$ctx->{base_url} = base_url($ctx);
bless $ctx, __PACKAGE__;
}
sub async_eml { # for async_blob_cb
my ($ctx, $eml) = @_;
$ctx->{http_out}->write($ctx->translate($ctx->{cb}->($ctx, $eml)));
}
sub html_top ($) {
my ($ctx) = @_;
my $ibx = $ctx->{-inbox};
my $desc = ascii_html($ibx->description);
my $title = delete($ctx->{-title_html}) // $desc;
my $upfx = $ctx->{-upfx} || '';
my $help = $upfx.'_/text/help';
my $color = $upfx.'_/text/color';
my $atom = $ctx->{-atom} || $upfx.'new.atom';
my $top = "<b>$desc</b>";
if (my $t_max = $ctx->{-t_max}) {
$t_max = ts2str($t_max);
$top = qq(<a\nhref="$upfx?t=$t_max">$top</a>);
# we had some kind of query, link to /$INBOX/?t=YYYYMMDDhhmmss
} elsif ($ctx->{qp}->{t}) {
$top = qq(<a\nhref="./">$top</a>);
}
my $links = qq(<a\nhref="$help">help</a> / ).
qq(<a\nhref="$color">color</a> / ).
qq(<a\nhref=#mirror>mirror</a> / ).
qq(<a\nhref="$atom">Atom feed</a>);
if ($ibx->search) {
my $q_val = delete($ctx->{-q_value_html}) // '';
$q_val = qq(\nvalue="$q_val") if $q_val ne '';
# XXX gross, for SearchView.pm
my $extra = delete($ctx->{-extra_form_html}) // '';
my $action = $upfx eq '' ? './' : $upfx;
$top = qq{<form\naction="$action"><pre>$top} .
qq{\n<input\nname=q\ntype=text$q_val />} .
$extra .
qq{<input\ntype=submit\nvalue=search />} .
' ' . $links .
q{</pre></form>}
} else {
$top = '<pre>' . $top . "\n" . $links . '</pre>';
}
"<html><head><title>$title</title>" .
qq(<link\nrel=alternate\ntitle="Atom feed"\n).
qq(href="$atom"\ntype="application/atom+xml"/>) .
$ctx->{www}->style($upfx) .
'</head><body>'. $top . (delete($ctx->{-html_tip}) // '');
}
sub coderepos ($) {
my ($ctx) = @_;
my $ibx = $ctx->{-inbox};
my @ret;
if (defined(my $cr = $ibx->{coderepo})) {
my $cfg = $ctx->{www}->{pi_config};
my $env = $ctx->{env};
for my $cr_name (@$cr) {
my $urls = $cfg->{"coderepo.$cr_name.cgiturl"};
if ($urls) {
$ret[0] //= <<EOF;
code repositories for the project(s) associated with this inbox:
EOF
$ret[0] .= "\n\t".prurl($env, $_) for @$urls;
}
}
}
@ret; # may be empty
}
sub code_footer ($) {
my ($env) = @_;
my $u = prurl($env, $CODE_URL);
qq(AGPL code for this site: git clone <a\nhref="$u">$u</a>)
}
sub _html_end {
my ($ctx) = @_;
my $urls = <<EOF;
<a
id=mirror>This inbox may be cloned and mirrored by anyone:</a>
EOF
my $ibx = $ctx->{-inbox};
my $desc = ascii_html($ibx->description);
my @urls;
my $http = $ctx->{base_url};
my $max = $ibx->max_git_epoch;
my $dir = (split(m!/!, $http))[-1];
my %seen = ($http => 1);
if (defined($max)) { # v2
for my $i (0..$max) {
# old epochs my be deleted:
-d "$ibx->{inboxdir}/git/$i.git" or next;
my $url = "$http/$i";
$seen{$url} = 1;
push @urls, "$url $dir/git/$i.git";
}
my $nr = scalar(@urls);
if ($nr > 1) {
$urls .= "\n\t# this inbox consists of $nr epochs:";
$urls[0] .= "\t# oldest";
$urls[-1] .= "\t# newest";
}
} else { # v1
push @urls, $http;
}
# FIXME: epoch splits can be different in other repositories,
# use the "cloneurl" file as-is for now:
foreach my $u (@{$ibx->cloneurl}) {
next if $seen{$u}++;
push @urls, $u =~ /\Ahttps?:/ ? qq(<a\nhref="$u">$u</a>) : $u;
}
$urls .= "\n" . join('', map { "\tgit clone --mirror $_\n" } @urls);
my $addrs = $ibx->{address};
$addrs = join(' ', @$addrs) if ref($addrs) eq 'ARRAY';
my $v = defined $max ? '-V2' : '-V1';
$urls .= <<EOF;
# If you have public-inbox 1.1+ installed, you may
# initialize and index your mirror using the following commands:
public-inbox-init $v $ibx->{name} $dir/ $http \\
$addrs
public-inbox-index $dir
EOF
my $cfg_link = ($ctx->{-upfx} // '').'_/text/config/raw';
$urls .= <<EOF;
Example <a
href="$cfg_link">config snippet</a> for mirrors.
EOF
my @nntp = map { qq(<a\nhref="$_">$_</a>) } @{$ibx->nntp_url};
if (@nntp) {
$urls .= @nntp == 1 ? 'Newsgroup' : 'Newsgroups are';
$urls .= ' available over NNTP:';
$urls .= "\n\t" . join("\n\t", @nntp) . "\n";
}
if ($urls =~ m!\b[^:]+://\w+\.onion/!) {
$urls .= " note: .onion URLs require Tor: ";
$urls .= qq[<a\nhref="$TOR_URL">$TOR_URL</a>];
}
'<hr><pre>'.join("\n\n",
$desc,
$urls,
coderepos($ctx),
code_footer($ctx->{env})
).'</pre></body></html>';
}
# callback for HTTP.pm (and any other PSGI servers)
sub getline {
my ($ctx) = @_;
my $cb = $ctx->{cb} or return;
while (defined(my $x = $cb->($ctx))) { # x = smsg or scalar non-ref
if (ref($x)) { # smsg
my $eml = $ctx->{-inbox}->smsg_eml($x) or next;
$ctx->{smsg} = $x;
return $ctx->translate($cb->($ctx, $eml));
} else { # scalar
return $ctx->translate($x);
}
}
delete $ctx->{cb};
$ctx->zflush(_html_end($ctx));
}
sub html_oneshot ($$;$) {
my ($ctx, $code, $sref) = @_;
my $res_hdr = [ 'Content-Type' => 'text/html; charset=UTF-8',
'Content-Length' => undef ];
bless $ctx, __PACKAGE__;
$ctx->{gz} = PublicInbox::GzipFilter::gz_or_noop($res_hdr, $ctx->{env});
$ctx->{base_url} //= do {
$ctx->zmore(html_top($ctx));
base_url($ctx);
};
$ctx->zmore($$sref) if $sref;
my $bdy = $ctx->zflush(_html_end($ctx));
$res_hdr->[3] = bytes::length($bdy);
[ $code, $res_hdr, [ $bdy ] ]
}
sub async_next ($) {
my ($http) = @_; # PublicInbox::HTTP
my $ctx = $http->{forward} or return;
eval {
if (my $smsg = $ctx->{smsg} = $ctx->{cb}->($ctx)) {
$ctx->smsg_blob($smsg);
} else {
$ctx->{http_out}->write(
$ctx->translate(_html_end($ctx)));
$ctx->close; # GzipFilter->close
}
};
warn "E: $@" if $@;
}
sub aresponse {
my ($ctx, $code, $cb) = @_;
my $res_hdr = [ 'Content-Type' => 'text/html; charset=UTF-8' ];
init($ctx, $cb);
$ctx->psgi_response($code, $res_hdr);
}
1;
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