user/dev discussion of public-inbox itself
 help / color / mirror / Atom feed
328303ceb097abbc9558b0c62fbf19176cded78a blob 4177 bytes (raw)

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
 
# Copyright (C) 2020 all contributors <meta@public-inbox.org>
# License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
package PublicInbox::ManifestJsGz;
use strict;
use v5.10.1;
use Digest::SHA ();
use File::Spec ();
use bytes (); # length
use PublicInbox::Inbox;
use PublicInbox::Git;
use IO::Compress::Gzip qw(gzip);
use HTTP::Date qw(time2str);
*try_cat = \&PublicInbox::Inbox::try_cat;

our $json;
for my $mod (qw(JSON::MaybeXS JSON JSON::PP)) {
	eval "require $mod" or next;
	# ->ascii encodes non-ASCII to "\uXXXX"
	$json = $mod->new->ascii(1) and last;
}

sub response {
	my ($env, $list) = @_;
	$json or return [ 404, [], [] ];
	my $self = bless {
		-abs2urlpath => {},
		-mtime => 0,
		manifest => {},
		-list => $list,
		psgi_env => $env,
	}, __PACKAGE__;

	# PSGI server will call this immediately and give us a callback (-wcb)
	sub {
		$self->{-wcb} = $_[0]; # HTTP write callback
		iterate_start($self);
	};
}

sub fingerprint ($) {
	my ($git) = @_;
	# TODO: convert to qspawn for fairness when there's
	# thousands of repos
	my ($fh, $pid) = $git->popen('show-ref');
	my $dig = Digest::SHA->new(1);
	while (read($fh, my $buf, 65536)) {
		$dig->add($buf);
	}
	close $fh;
	waitpid($pid, 0);
	return if $?; # empty, uninitialized git repo
	$dig->hexdigest;
}

sub manifest_add ($$;$$) {
	my ($self, $ibx, $epoch, $default_desc) = @_;
	my $url_path = "/$ibx->{name}";
	my $git_dir = $ibx->{inboxdir};
	if (defined $epoch) {
		$git_dir .= "/git/$epoch.git";
		$url_path .= "/git/$epoch.git";
	}
	return unless -d $git_dir;
	my $git = PublicInbox::Git->new($git_dir);
	my $fingerprint = fingerprint($git) or return; # no empty repos

	chomp(my $owner = $git->qx('config', 'gitweb.owner'));
	chomp(my $desc = try_cat("$git_dir/description"));
	utf8::decode($owner);
	utf8::decode($desc);
	$owner = undef if $owner eq '';
	$desc = 'Unnamed repository' if $desc eq '';

	# templates/hooks--update.sample and git-multimail in git.git
	# only match "Unnamed repository", not the full contents of
	# templates/this--description in git.git
	if ($desc =~ /\AUnnamed repository/) {
		$desc = "$default_desc [epoch $epoch]" if defined($epoch);
	}

	my $reference;
	chomp(my $alt = try_cat("$git_dir/objects/info/alternates"));
	if ($alt) {
		# n.b.: GitPython doesn't seem to handle comments or C-quoted
		# strings like native git does; and we don't for now, either.
		my @alt = split(/\n+/, $alt);

		# grokmirror only supports 1 alternate for "reference",
		if (scalar(@alt) == 1) {
			my $objdir = "$git_dir/objects";
			$reference = File::Spec->rel2abs($alt[0], $objdir);
			$reference =~ s!/[^/]+/?\z!!; # basename
		}
	}
	$self->{-abs2urlpath}->{$git_dir} = $url_path;
	my $modified = $git->modified;
	if ($modified > $self->{-mtime}) {
		$self->{-mtime} = $modified;
	}
	$self->{manifest}->{$url_path} = {
		owner => $owner,
		reference => $reference,
		description => $desc,
		modified => $modified,
		fingerprint => $fingerprint,
	};
}

sub iterate_start {
	my ($self) = @_;
	if (my $async = $self->{psgi_env}->{'pi-httpd.async'}) {
		# PublicInbox::HTTPD::Async->new
		$async->(undef, undef, $self);
	} else {
		event_step($self) while $self->{-wcb};
	}
}

sub event_step {
	my ($self) = @_;
	while (my $ibx = shift(@{$self->{-list}})) {
		eval {
			if (defined(my $max = $ibx->max_git_epoch)) {
				my $desc = $ibx->description;
				for my $epoch (0..$max) {
					manifest_add($self, $ibx, $epoch, $desc)
				}
			} else {
				manifest_add($self, $ibx);
			}
		};
		warn "E: $@" if $@;
		if (my $async = $self->{psgi_env}->{'pi-httpd.async'}) {
			# PublicInbox::HTTPD::Async->new
			$async->(undef, undef, $self);
		}
		return; # more steps needed
	}
	my $abs2urlpath = delete $self->{-abs2urlpath};
	my $wcb = delete $self->{-wcb};
	my $manifest = delete $self->{manifest};
	while (my ($url_path, $repo) = each %$manifest) {
		defined(my $abs = $repo->{reference}) or next;
		$repo->{reference} = $abs2urlpath->{$abs};
	}
	$manifest = $json->encode($manifest);
	gzip(\$manifest => \(my $out));
	$wcb->([ 200, [ qw(Content-Type application/gzip),
		 'Last-Modified', time2str($self->{-mtime}),
		 'Content-Length', bytes::length($out) ], [ $out ] ]);
}

1;
debug log:

solving 328303ce ...
found 328303ce in https://80x24.org/public-inbox.git

user/dev discussion of public-inbox itself

This inbox may be cloned and mirrored by anyone:

	git clone --mirror https://public-inbox.org/meta
	git clone --mirror http://czquwvybam4bgbro.onion/meta
	git clone --mirror http://hjrcffqmbrq6wope.onion/meta
	git clone --mirror http://ou63pmih66umazou.onion/meta

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V1 meta meta/ https://public-inbox.org/meta \
		meta@public-inbox.org
	public-inbox-index meta

Example config snippet for mirrors.
Newsgroups are available over NNTP:
	nntp://news.public-inbox.org/inbox.comp.mail.public-inbox.meta
	nntp://ou63pmih66umazou.onion/inbox.comp.mail.public-inbox.meta
	nntp://czquwvybam4bgbro.onion/inbox.comp.mail.public-inbox.meta
	nntp://hjrcffqmbrq6wope.onion/inbox.comp.mail.public-inbox.meta
	nntp://news.gmane.io/gmane.mail.public-inbox.general
 note: .onion URLs require Tor: https://www.torproject.org/

code repositories for the project(s) associated with this inbox:

	https://80x24.org/public-inbox.git

AGPL code for this site: git clone https://public-inbox.org/public-inbox.git