use strict;
use warnings;
use Fcntl qw(:seek);
-use IO::File;
+use IO::Handle;
use HTTP::Date qw(time2str);
use HTTP::Status qw(status_message);
+use Plack::Util;
use PublicInbox::Qspawn;
+# 32 is same as the git-daemon connection limit
+my $default_limiter = PublicInbox::Qspawn::Limiter->new(32);
+
# n.b. serving "description" and "cloneurl" should be innocuous enough to
# not cause problems. serving "config" might...
my @text = qw[HEAD info/refs
objects/pack/pack-[a-f0-9]{40}\.(?:pack|idx)
!;
-our $ANY = join('|', @binary, @text);
+our $ANY = join('|', @binary, @text, 'git-upload-pack');
my $BIN = join('|', @binary);
my $TEXT = join('|', @text);
}
sub serve {
- my ($cgi, $git, $path) = @_;
+ my ($env, $git, $path) = @_;
+
+ # XXX compatibility... ugh, can we stop supporting this?
+ $git = PublicInbox::Git->new($git) unless ref($git);
- my $service = $cgi->query_parameters->get('service') || '';
- if ($service =~ /\Agit-\w+-pack\z/ || $path =~ /\Agit-\w+-pack\z/) {
- my $ok = serve_smart($cgi, $git, $path);
+ # Documentation/technical/http-protocol.txt in git.git
+ # requires one and exactly one query parameter:
+ if ($env->{QUERY_STRING} =~ /\Aservice=git-\w+-pack\z/ ||
+ $path =~ /\Agit-\w+-pack\z/) {
+ my $ok = serve_smart($env, $git, $path);
return $ok if $ok;
}
- serve_dumb($cgi, $git, $path);
+ serve_dumb($env, $git, $path);
}
sub err ($@) {
}
}
+my $prev = 0;
+my $exp;
+sub cache_one_year {
+ my ($h) = @_;
+ my $t = time + 31536000;
+ push @$h, 'Expires', $t == $prev ? $exp : ($exp = time2str($prev = $t)),
+ 'Cache-Control', 'public, max-age=31536000';
+}
+
sub serve_dumb {
- my ($cgi, $git, $path) = @_;
+ my ($env, $git, $path) = @_;
my @h;
my $type;
- if ($path =~ /\A(?:$BIN)\z/o) {
- $type = 'application/octet-stream';
- push @h, 'Expires', time2str(time + 31536000);
- push @h, 'Cache-Control', 'public, max-age=31536000';
+ if ($path =~ m!\Aobjects/[a-f0-9]{2}/[a-f0-9]{38}\z!) {
+ $type = 'application/x-git-loose-object';
+ cache_one_year(\@h);
+ } elsif ($path =~ m!\Aobjects/pack/pack-[a-f0-9]{40}\.pack\z!) {
+ $type = 'application/x-git-packed-objects';
+ cache_one_year(\@h);
+ } elsif ($path =~ m!\Aobjects/pack/pack-[a-f0-9]{40}\.idx\z!) {
+ $type = 'application/x-git-packed-objects-toc';
+ cache_one_year(\@h);
} elsif ($path =~ /\A(?:$TEXT)\z/o) {
$type = 'text/plain';
push @h, @no_cache;
return r(404);
}
- my $f = "$git->{git_dir}/$path";
+ my $f = $git->{git_dir} . '/' . $path;
return r(404) unless -f $f && -r _; # just in case it's a FIFO :P
- my @st = stat(_);
- my $size = $st[7];
- my $env = $cgi->{env};
+ my $size = -s _;
# TODO: If-Modified-Since and Last-Modified?
open my $in, '<', $f or return r(404);
my $code = 200;
push @h, 'Content-Type', $type;
if (($env->{HTTP_RANGE} || '') =~ /\bbytes=(\d*)-(\d*)\z/) {
- ($code, $len) = prepare_range($cgi, $in, \@h, $1, $2, $size);
+ ($code, $len) = prepare_range($env, $in, \@h, $1, $2, $size);
if ($code == 416) {
push @h, 'Content-Range', "bytes */$size";
return [ 416, \@h, [] ];
}
sub prepare_range {
- my ($cgi, $in, $h, $beg, $end, $size) = @_;
+ my ($env, $in, $h, $beg, $end, $size) = @_;
my $code = 200;
my $len = $size;
if ($beg eq '') {
push @$h, "bytes $beg-$end/$size";
# FIXME: Plack::Middleware::Deflater bug?
- $cgi->{env}->{'psgix.no-compress'} = 1;
+ $env->{'psgix.no-compress'} = 1;
}
}
($code, $len);
# returns undef if 403 so it falls back to dumb HTTP
sub serve_smart {
- my ($cgi, $git, $path) = @_;
- my $env = $cgi->{env};
+ my ($env, $git, $path) = @_;
my $in = $env->{'psgi.input'};
my $fd = eval { fileno($in) };
unless (defined $fd && $fd >= 0) {
my $val = $env->{$name};
$env{$name} = $val if defined $val;
}
+ my $limiter = $git->{-httpbackend_limiter} || $default_limiter;
my $git_dir = $git->{git_dir};
$env{GIT_HTTP_EXPORT_ALL} = '1';
$env{PATH_TRANSLATED} = "$git_dir/$path";
- my %rdr = ( 0 => fileno($in) );
- my $x = PublicInbox::Qspawn->new([qw(git http-backend)], \%env, \%rdr);
+ my $rdr = { 0 => fileno($in) };
+ my $qsp = PublicInbox::Qspawn->new([qw(git http-backend)], \%env, $rdr);
my ($fh, $rpipe);
my $end = sub {
- if (my $err = $x->finish) {
+ if (my $err = $qsp->finish) {
err($env, "git http-backend ($git_dir): $err");
- drop_client($env);
}
$fh->close if $fh; # async-only
};
return if !defined($r) && ($!{EINTR} || $!{EAGAIN});
return r(500, 'http-backend error') unless $r;
$r = parse_cgi_headers(\$buf) or return; # incomplete headers
- $r->[0] == 403 ? serve_dumb($cgi, $git, $path) : $r;
+ $r->[0] == 403 ? serve_dumb($env, $git, $path) : $r;
};
my $res;
- my $async = $env->{'pi-httpd.async'};
+ my $async = $env->{'pi-httpd.async'}; # XXX unstable API
my $io = $env->{'psgix.io'};
my $cb = sub {
my $r = $rd_hdr->() or return;
# holding the input here is a waste of FDs and memory
$env->{'psgi.input'} = undef;
- $x->start(sub { # may run later, much later...
+ $qsp->start($limiter, sub { # may run later, much later...
($rpipe) = @_;
$in = undef;
if ($async) {
sub input_to_file {
my ($env) = @_;
- my $in = IO::File->new_tmpfile;
+ open(my $in, '+>', undef);
+ unless (defined $in) {
+ err($env, "could not open temporary file: $!");
+ return;
+ }
my $input = $env->{'psgi.input'};
my $buf;
while (1) {
err($env, "error reading input: $!");
return;
}
- last if ($r == 0);
- $in->write($buf);
+ my $off = 0;
+ while ($r > 0) {
+ my $w = syswrite($in, $buf, $r, $off);
+ if (defined $w) {
+ $r -= $w;
+ $off += $w;
+ } else {
+ err($env, "error writing temporary file: $!");
+ return;
+ }
+ }
+ }
+ unless (defined(sysseek($in, 0, SEEK_SET))) {
+ err($env, "error seeking temporary file: $!");
+ return;
}
- $in->flush;
- $in->sysseek(0, SEEK_SET);
return $in;
}