X-Git-Url: http://www.git.stargrave.org/?a=blobdiff_plain;f=lib%2FPublicInbox%2FWwwStream.pm;h=e27da8c2ed0f0b6bf359ac10760857032b6ebab3;hb=4e60d74e6cab0a134c0c62785c766b5fa02ac360;hp=c964dbd41a4607136c3df0f089957ec9aa72a159;hpb=cde937e3bf4c0ad343479f9711a201494e4f36ee;p=public-inbox.git

diff --git a/lib/PublicInbox/WwwStream.pm b/lib/PublicInbox/WwwStream.pm
index c964dbd4..e27da8c2 100644
--- a/lib/PublicInbox/WwwStream.pm
+++ b/lib/PublicInbox/WwwStream.pm
@@ -1,26 +1,19 @@
 # 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
+# HTML body stream for which yields getline+close methods for
+# generic PSGI servers and callbacks for public-inbox-httpd.
 #
-# public-inbox-httpd favors "getline" response bodies to take a
-# "pull"-based approach to feeding slow clients (as opposed to a
-# more common "push" model)
+# See PublicInbox::GzipFilter parent class for more info.
 package PublicInbox::WwwStream;
 use strict;
-use warnings;
-use base qw(Exporter);
+use parent qw(Exporter PublicInbox::GzipFilter);
 our @EXPORT_OK = qw(html_oneshot);
 use bytes (); # length
-use PublicInbox::Hval qw(ascii_html prurl);
-use Compress::Raw::Zlib qw(Z_FINISH Z_OK);
-use PublicInbox::GzipFilter qw(gzip_maybe gzf_maybe);
+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';
 
-# noop for HTTP.pm (and any other PSGI servers)
-sub close {}
-
 sub base_url ($) {
 	my $ctx = shift;
 	my $base_url = $ctx->{-inbox}->base_url($ctx->{env});
@@ -28,28 +21,20 @@ sub base_url ($) {
 	$base_url;
 }
 
-sub new {
-	my ($class, $ctx, $cb) = @_;
-
-	bless {
-		nr => 0,
-		cb => $cb,
-		ctx => $ctx,
-		base_url => base_url($ctx),
-	}, $class;
+sub init {
+	my ($ctx, $cb) = @_;
+	$ctx->{cb} = $cb;
+	$ctx->{base_url} = base_url($ctx);
+	bless $ctx, __PACKAGE__;
 }
 
-sub response {
-	my ($class, $ctx, $code, $cb) = @_;
-	my $h = [ 'Content-Type', 'text/html; charset=UTF-8' ];
-	my $self = $class->new($ctx, $cb);
-	$self->{gzf} = gzf_maybe($h, $ctx->{env});
-	[ $code, $h, $self ]
+sub async_eml { # for async_blob_cb
+	my ($ctx, $eml) = @_;
+	$ctx->{http_out}->write($ctx->translate($ctx->{cb}->($ctx, $eml)));
 }
 
-sub _html_top ($) {
-	my ($self) = @_;
-	my $ctx = $self->{ctx};
+sub html_top ($) {
+	my ($ctx) = @_;
 	my $ibx = $ctx->{-inbox};
 	my $desc = ascii_html($ibx->description);
 	my $title = delete($ctx->{-title_html}) // $desc;
@@ -58,9 +43,17 @@ sub _html_top ($) {
 	my $color = $upfx.'_/text/color';
 	my $atom = $ctx->{-atom} || $upfx.'new.atom';
 	my $top = "<b>$desc</b>";
-	my $links = "<a\nhref=\"$help\">help</a> / ".
-			"<a\nhref=\"$color\">color</a> / ".
-			"<a\nhref=\"$atom\">Atom feed</a>";
+	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 $q_val ne '';
@@ -90,25 +83,34 @@ sub code_footer ($) {
 }
 
 sub _html_end {
-	my ($self) = @_;
-	my $urls = 'Archives are clonable:';
-	my $ctx = $self->{ctx};
+	my ($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 = $self->{base_url};
+	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 parts my be deleted:
+			# 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;
 	}
@@ -120,12 +122,7 @@ sub _html_end {
 		push @urls, $u =~ /\Ahttps?:/ ? qq(<a\nhref="$u">$u</a>) : $u;
 	}
 
-	if (defined($max) || scalar(@urls) > 1) {
-		$urls .= "\n" .
-			join("\n", map { "\tgit clone --mirror $_" } @urls);
-	} else {
-		$urls .= " git clone --mirror $urls[0]";
-	}
+	$urls .= "\n" .  join("\n", map { "\tgit clone --mirror $_" } @urls);
 	if (defined $max) {
 		my $addrs = $ibx->{address};
 		$addrs = join(' ', @$addrs) if ref($addrs) eq 'ARRAY';
@@ -143,16 +140,19 @@ EOF
 	}
 
 	my $cfg_link = ($ctx->{-upfx} // '').'_/text/config/raw';
-	$urls .= qq(\nExample <a\nhref="$cfg_link">config snippet</a> for mirrors\n);
+	$urls .= <<EOF;
+
+Example <a
+href="$cfg_link">config snippet</a> for mirrors.
+EOF
 	my @nntp = map { qq(<a\nhref="$_">$_</a>) } @{$ibx->nntp_url};
 	if (@nntp) {
-		$urls .= "\n";
 		$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 .= "\n note: .onion URLs require Tor: ";
+		$urls .= " note: .onion URLs require Tor: ";
 		$urls .= qq[<a\nhref="$TOR_URL">$TOR_URL</a>];
 	}
 	'<hr><pre>'.join("\n\n",
@@ -164,52 +164,57 @@ EOF
 
 # callback for HTTP.pm (and any other PSGI servers)
 sub getline {
-	my ($self) = @_;
-	my $nr = $self->{nr}++;
-
-	my $buf = do {
-		if ($nr == 0) {
-			_html_top($self);
-		} elsif (my $middle = $self->{cb}) {
-			$middle->($nr, $self->{ctx});
+	my ($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($self->{cb}) ? _html_end($self) : undef);
-
-	# gzf may be GzipFilter, `undef' or `0'
-	my $gzf = $self->{gzf} or return $buf;
-
-	return $gzf->translate($buf) if defined $buf;
-	$self->{gzf} = 0; # next call to ->getline returns $buf (== undef)
-	$gzf->translate(undef);
+	}
+	delete $ctx->{cb};
+	$ctx->zflush(_html_end($ctx));
 }
 
 sub html_oneshot ($$;$) {
 	my ($ctx, $code, $sref) = @_;
-	my $self = bless {
-		ctx => $ctx,
-		base_url => base_url($ctx),
-	}, __PACKAGE__;
-	my @x;
-	my $h = [ 'Content-Type' => 'text/html; charset=UTF-8' ];
-	if (my $gz = gzip_maybe($h, $ctx->{env})) {
-		my $err = $gz->deflate(_html_top($self), $x[0]);
-		die "gzip->deflate: $err" if $err != Z_OK;
-		if ($sref) {
-			$err = $gz->deflate($sref, $x[0]);
-			die "gzip->deflate: $err" if $err != Z_OK;
+	my $res_hdr = [ 'Content-Type' => 'text/html; charset=UTF-8',
+		'Content-Length' => undef ];
+	bless $ctx, __PACKAGE__;
+	$ctx->{gz} = PublicInbox::GzipFilter::gz_or_noop($res_hdr, $ctx->{env});
+	$ctx->{base_url} //= do {
+		$ctx->zmore(html_top($ctx));
+		base_url($ctx);
+	};
+	$ctx->zmore($$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
 		}
-		$err = $gz->deflate(_html_end($self), $x[0]);
-		die "gzip->deflate: $err" if $err != Z_OK;
-		$err = $gz->flush($x[0], Z_FINISH);
-		die "gzip->flush: $err" if $err != Z_OK;
-	} else {
-		@x = (_html_top($self), $sref ? $$sref : (), _html_end($self));
-	}
+	};
+	warn "E: $@" if $@;
+}
 
-	my $len = 0;
-	$len += bytes::length($_) for @x;
-	push @$h, 'Content-Length', $len;
-	[ $code, $h, \@x ]
+sub aresponse {
+	my ($ctx, $code, $cb) = @_;
+	my $res_hdr = [ 'Content-Type' => 'text/html; charset=UTF-8' ];
+	init($ctx, $cb);
+	$ctx->psgi_response($code, $res_hdr);
 }
 
 1;