- $res->(r(500)) if $res;
- }
- if ($rpipe) {
- $rpipe->close; # _may_ be Danga::Socket::close
- $rpipe = undef;
- }
- if (defined $pid) {
- my $wpid = $pid;
- $pid = undef;
- return if $wpid == waitpid($wpid, 0);
- $err->print("git http-backend ($git_dir): $?\n");
- }
- };
- my $fail = sub {
- my ($e) = @_;
- if ($e eq 'EAGAIN') {
- select($vin, undef, undef, undef) if defined $vin;
- # $vin is undef on async, so this is a noop on EAGAIN
- return;
- }
- $end->();
- $err->print("git http-backend ($git_dir): $e\n");
- };
- my $cb = sub { # read git-http-backend output and stream to client
- my $r = $rpipe ? $rpipe->sysread($buf, 8192, length($buf)) : 0;
- return $fail->($!{EAGAIN} ? 'EAGAIN' : $!) unless defined $r;
- return $end->() if $r == 0; # EOF
- if ($fh) { # stream body from git-http-backend to HTTP client
- $fh->write($buf);
- $buf = '';
- } elsif ($buf =~ s/\A(.*?)\r?\n\r?\n//s) { # parse headers
- my $h = $1;
- my $code = 200;
- my @h;
- foreach my $l (split(/\r?\n/, $h)) {
- my ($k, $v) = split(/:\s*/, $l, 2);
- if ($k =~ /\AStatus\z/i) {
- $code = int($v);
- } else {
- push @h, $k, $v;
- }
- }
- # write response header:
- $fh = $res->([ $code, \@h ]);
- $res = undef;
- $fh->write($buf);
- $buf = '';
- } # else { keep reading ... }
- };
- if (my $async = $env->{'pi-httpd.async'}) {
- $rpipe = $async->($rpipe, $cb);
- sub { ($res) = @_ } # let Danga::Socket handle the rest.
- } else { # synchronous loop
- $vin = '';
- vec($vin, fileno($rpipe), 1) = 1;
- sub {
- ($res) = @_;
- while ($rpipe) { $cb->() }