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| | # Copyright (C) 2016-2021 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 v5.10.1;
use parent qw(Exporter PublicInbox::GzipFilter);
our @EXPORT_OK = qw(html_oneshot);
use PublicInbox::Hval qw(ascii_html prurl ts2str);
our $CODE_URL = [ qw(
http://7fh6tueqddpjyxjmgtdiueylzoqt6pt7hec3pukyptlmohoowvhde4yd.onion/public-inbox.git
https://public-inbox.org/public-inbox.git) ];
sub base_url ($) {
my $ctx = shift;
my $base_url = $ctx->{ibx}->base_url($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) = @_;
$ctx->write($ctx->{cb}->($ctx, $eml));
}
sub html_top ($) {
my ($ctx) = @_;
my $ibx = $ctx->{ibx};
my $desc = ascii_html($ibx->description);
my $title = delete($ctx->{-title_html}) // $desc;
my $upfx = $ctx->{-upfx} || '';
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>);
} elsif (length($upfx)) {
$top = qq(<a\nhref="$upfx">$top</a>);
}
my $code = $ibx->{coderepo} ? qq( / <a\nhref=#code>code</a>) : '';
# id=mirror must exist for legacy bookmarks
my $links = qq(<a\nhref="${upfx}_/text/help/">help</a> / ).
qq(<a\nhref="${upfx}_/text/color/">color</a> / ).
qq(<a\nid=mirror) .
qq(\nhref="${upfx}_/text/mirror/">mirror</a>$code / ).
qq(<a\nhref="$atom">Atom feed</a>);
if ($ibx->isrch) {
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 $cr = $ctx->{ibx}->{coderepo} // return ();
my $cfg = $ctx->{www}->{pi_cfg};
my $upfx = ($ctx->{-upfx} // ''). '../';
my @ret;
for my $cr_name (@$cr) {
$ret[0] //= <<EOF;
<a id=code>Code repositories for project(s) associated with this inbox:
EOF
my $urls = $cfg->get_all("coderepo.$cr_name.cgiturl");
if ($urls) {
for (@$urls) {
# relative or absolute URL?, prefix relative
# "foo.git" with appropriate number of "../"
my $u = m!\A(?:[a-z\+]+:)?//! ? $_ : $upfx.$_;
$u = ascii_html(prurl($ctx->{env}, $u));
$ret[0] .= qq(\n\t<a\nhref="$u">$u</a>);
}
} else {
$ret[0] .= qq[\n\t$cr_name.git (no URL configured)];
}
}
@ret; # may be empty, this sub is called as an arg for join()
}
sub _html_end {
my ($ctx) = @_;
my $upfx = $ctx->{-upfx} || '';
my $m = "${upfx}_/text/mirror/";
my $x;
if ($ctx->{ibx}->can('cloneurl')) {
$x = <<EOF;
This is a public inbox, see <a
href="$m">mirroring instructions</a>
for how to clone and mirror all data and code used for this inbox
EOF
my $has_nntp = @{$ctx->{ibx}->nntp_url($ctx)};
my $has_imap = @{$ctx->{ibx}->imap_url($ctx)};
if ($has_nntp || $has_imap) {
substr($x, -1, 1) = ";\n"; # s/\n/;\n
if ($has_nntp && $has_imap) {
$x .= <<EOM;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).
EOM
} elsif ($has_nntp) {
$x .= <<EOM;
as well as URLs for NNTP newsgroup(s).
EOM
} else {
$x .= <<EOM;
as well as URLs for IMAP folder(s).
EOM
}
}
} else {
$x = <<EOF;
This is an external index of several public inboxes,
see <a href="$m">mirroring instructions</a> on how to clone and mirror
all data and code used by this external index.
EOF
}
chomp $x;
'<hr><pre>'.join("\n\n", coderepos($ctx), $x).'</pre></body></html>'
}
# callback for HTTP.pm (and any other PSGI servers)
sub getline {
my ($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 = $ctx->{ibx}->smsg_eml($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 ($$;$) {
my ($ctx, $code, $sref) = @_;
my $res_hdr = [ 'Content-Type' => 'text/html; charset=UTF-8',
'Content-Length' => undef ];
bless $ctx, __PACKAGE__;
$ctx->{gz} = PublicInbox::GzipFilter::gz_or_noop($res_hdr, $ctx->{env});
$ctx->{base_url} // do {
$ctx->zmore(html_top($ctx));
$ctx->{base_url} = base_url($ctx);
};
$ctx->zmore($$sref) if $sref;
my $bdy = $ctx->zflush(_html_end($ctx));
$res_hdr->[3] = length($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 {
$ctx->write(_html_end($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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