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|
# Copyright © 2010 Julian Blake Kongslie <jblake@omgwallhack.org>
# Licensed under the BSD 3-clause license.
use strict;
use warnings;
package Piny::Repo;
use Moose;
use Moose::Util::TypeConstraints;
use MooseX::StrictConstructor;
use Digest::SHA qw( sha256_hex );
use File::Find qw( find );
use File::Temp qw( );
use IO::Dir qw( );
use Math::GMP qw( );
use IkiWiki::FakeSetup qw( readSetup writeSetup );
use Piny::Config;
use Piny::Environment;
use Piny::Group;
use Piny::User;
use Piny::User::IkiWiki;
# Types
subtype 'Reponame'
=> as 'Str'
=> where { $_ =~ /^[a-zA-Z0-9][a-zA-Z0-9_.-]*$/ }
=> message { 'That name is not in the correct format for a piny repo.' }
;
subtype 'SimpleText'
=> as 'Str'
=> where { $_ =~ /^[\x{0020}-\x{FDCF}\x{FDF0}-\x{FFFD}]{1,80}$/ }
=> message { 'That description is not in the correct format for a piny repo.' }
;
# Attributes
has 'name' =>
( is => 'ro'
, isa => 'Reponame'
, required => 1
);
has 'shortname' =>
( is => 'ro'
, isa => 'Str'
, lazy_build => 1
, init_arg => undef
);
has 'group' =>
( is => 'ro'
, isa => 'Piny::Group'
, lazy_build => 1
, init_arg => undef
);
has 'path' =>
( is => 'ro'
, isa => 'Str'
, lazy_build => 1
, init_arg => undef
);
has 'description' =>
( is => 'rw'
, isa => 'SimpleText'
, trigger => \&_set_description
, lazy_build => 1
, init_arg => undef
);
has 'repostat' =>
( is => 'ro'
, isa => 'ArrayRef'
, lazy_build => 1
, init_arg => undef
);
has 'owner' =>
( is => 'rw'
, isa => 'Piny::User'
, trigger => \&_change_owner
, lazy_build => 1
, init_arg => undef
);
has 'globally_readable' =>
( is => 'ro'
, isa => 'Bool'
, lazy_build => 1
, init_arg => undef
);
has 'globally_writable' =>
( is => 'ro'
, isa => 'Bool'
, lazy_build => 1
, init_arg => undef
);
has 'cgit_url' =>
( is => 'ro'
, isa => 'Str'
, lazy_build => 1
, init_arg => undef
);
has 'ikiwiki_setup' =>
( is => 'ro'
, isa => 'Str'
, lazy_build => 1
, init_arg => undef
);
has 'ikiwiki_destdir' =>
( is => 'ro'
, isa => 'Str'
, lazy_build => 1
, init_arg => undef
);
has 'ikiwiki_srcdir' =>
( is => 'ro'
, isa => 'Str'
, lazy_build => 1
, init_arg => undef
);
has 'ikiwiki_url' =>
( is => 'ro'
, isa => 'Str'
, lazy_build => 1
, init_arg => undef
);
has 'ikiwiki_cgiurl' =>
( is => 'ro'
, isa => 'Str'
, lazy_build => 1
, init_arg => undef
);
has 'ikiwiki_historyurl' =>
( is => 'ro'
, isa => 'Str'
, lazy_build => 1
, init_arg => undef
);
has 'ikiwiki_diffurl' =>
( is => 'ro'
, isa => 'Str'
, lazy_build => 1
, init_arg => undef
);
has 'ikiwiki_cgipath' =>
( is => 'ro'
, isa => 'Str'
, lazy_build => 1
, init_arg => undef
);
has 'secure_path' =>
( is => 'ro'
, isa => 'Str'
, lazy_build => 1
, init_arg => undef
);
has 'apache_config' =>
( is => 'ro'
, isa => 'Str'
, lazy_build => 1
, init_arg => undef
);
has 'config' =>
( is => 'ro'
, isa => 'Piny::Config'
, lazy_build => 1
, init_arg => undef
);
# Public methods
sub add_access {
my ( $s, @users ) = @_;
$s->group->add_member( @users );
};
sub remove_access {
my ( $s, @users ) = @_;
$s->group->remove_member( @users );
};
sub has_access {
my ( $s, $user ) = @_;
return $s->owner->uid == $user->uid || $user->has_group( $s->group );
};
sub rebuild {
my ( $s ) = @_;
unless( getgrnam("git-" . $s->shortname ) ) {
system( "/usr/sbin/addgroup", "--quiet", "git-" . $s->shortname ) and die "Could not create repo group!";
system( "/usr/sbin/adduser", "--quiet", $s->owner->name, "git-" . $s->shortname ) and die "Could not add you to the repo group!";
system( "/usr/sbin/adduser", "--quiet", "iki-" . $s->shortname, "git-" . $s->shortname ) and print "...But that's probably okay.\n";
};
unless( getpwnam("iki-" . $s->shortname ) ) {
system( "/usr/sbin/adduser", "--quiet", "--system", "--group", "--gecos", $s->shortname, "iki-" . $s->shortname ) and die "Could not create ikiwiki user!";
system( "/usr/sbin/adduser", "--quiet", "iki-" . $s->shortname, "git-" . $s->shortname ) and die "Could not add ikiwiki user to the repo group!";
};
my $ikiuser = Piny::User::IkiWiki->new( "name" => "iki-" . $s->shortname );
foreach( "git-daemon-export-ok", "packed-refs" ) {
unless( -e $s->path . "/" . $_ ) {
open( TOUCH, ">", $s->path . "/" . $_ ) or die "Could not touch $_ for repo: $!";
close( TOUCH );
};
};
foreach( "info", "logs", "branches" ) {
(-e $s->path . "/" . $_) or mkdir( $s->path . "/" . $_ ) or die "Could not mkdir $_ for repo: $!";
};
chown( 0, 0, $s->path, $s->path . "/config" ) or die "Could not change ownership of git dir!";
foreach( "branches", "description", "HEAD", "info", "logs", "objects", "packed-refs", "refs" ) {
system( "/bin/chown", "-R", $s->owner->name . "." . $s->group->name, $s->path . "/" . $_ ) and die "Could not change ownership of $_ for repo: $!";
};
system( "/bin/chown", "-R", $ikiuser->name . "." . $ikiuser->name, $s->path . "/hooks" ) and die "Could not change ownership of git hooks!";
open( SETUP, ">", "/etc/ikiwiki/piny/" . $s->name . ".setup" ) or die "Could not open new ikiwiki setup file: $!";
print SETUP $s->ikiwiki_setup;
close( SETUP ) or die "Could not close new ikiwiki setup file: $!";
unless( -d $s->ikiwiki_srcdir ) {
system( "/usr/bin/git", "clone", "--quiet", $s->path, $s->ikiwiki_srcdir ) and die "Could not clone repo to ikiwiki srcdir!";
};
system( "/usr/bin/find " . $s->ikiwiki_srcdir . " -type d -name .ikiwiki -print0 | xargs -0 --no-run-if-empty rm -r") and die "Could not remove old Ikiwiki state dir!";
foreach( $s->ikiwiki_srcdir, $s->ikiwiki_destdir, $s->secure_path ) {
unless( -d $_ ) { mkdir( $_ ) };
system( "/bin/chown", "-R", $ikiuser->name . ".", $_ ) and die "Could not change ownership of ikiwiki directories!";
};
open( WIKILIST, ">", "/etc/ikiwiki/wikilist.d/" . $s->name ) or die "Could not create wikilist.d file: $!";
print WIKILIST $ikiuser->name . " /etc/ikiwiki/piny/" . $s->name . ".setup\n";
close( WIKILIST ) or die "Could not close wikilist.d file: $!";
my $temp = File::Temp->new( ) or die "Could not create temporary file: $!";
$temp->unlink_on_destroy( 0 );
my $dh = IO::Dir->new( "/etc/ikiwiki/wikilist.d" ) or die "Could not open wikilist.d directory: $!";
while ( defined ( my $entry = $dh->read ) ) {
next if ( $entry =~ /^\./ );
open( FILE, "<", "/etc/ikiwiki/wikilist.d/" . $entry ) or die "Could not open wikilist.d entry $entry: $!";
print $temp <FILE>;
close( FILE ) or die "Could not close wikilist.d entry $entry: $!";
};
$temp->close or die "Could not close new wikilist: $!";
chmod( 00644, $temp->filename ) or die "Could not fix mode of new wikilist: $!";
rename( $temp->filename, "/etc/ikiwiki/wikilist" ) or die "Could not rename over old wikilist: $!";
$ENV{"GIT_DIR"} = $s->path;
system( "/usr/bin/git", "config", "gitweb.owner", $s->owner->email->address ) and die "Could not git config gitweb.owner!";
delete $ENV{"GIT_DIR"};
system( "/usr/bin/sudo", "-u", $ikiuser->name, "/usr/bin/ikiwiki", "--setup", "/etc/ikiwiki/piny/" . $s->name . ".setup" ) and die "Could not do initial compile of ikiwiki!";
open( APACHE, ">", "/etc/apache2/piny-available/" . $s->name ) or die "Could not open new apache config: $!";
print APACHE $s->apache_config;
close( APACHE ) or die "Could not close new apache config: $!";
unlink( "/etc/apache2/piny-enabled/" . $s->name );
symlink( "/etc/apache2/piny-available/" . $s->name, "/etc/apache2/piny-enabled/" . $s->name ) or die "Could not symlink apache config: $!";
system( "/etc/init.d/apache2", "reload" ) and die "Could not reload apache config!";
};
sub destroy {
my ( $s ) = @_;
my $user = Piny::Environment->instance->user;
unlink( "/etc/apache2/piny-enabled/" . $s->name );
unlink( "/etc/apache2/piny-available/" . $s->name );
system( "/etc/init.d/apache2", "reload" ) and die "Could not reload apache config!";
unlink( "/etc/ikiwiki/wikilist.d/" . $s->name );
my $temp = File::Temp->new( ) or die "Could not create temporary file: $!";
$temp->unlink_on_destroy( 0 );
my $dh = IO::Dir->new( "/etc/ikiwiki/wikilist.d" ) or die "Could not open wikilist.d directory: $!";
while ( defined ( my $entry = $dh->read ) ) {
next if ( $entry =~ /^\./ );
open( FILE, "<", "/etc/ikiwiki/wikilist.d/" . $entry ) or die "Could not open wikilist.d entry $entry: $!";
print $temp <FILE>;
close( FILE ) or die "Could not close wikilist.d entry $entry: $!";
};
$temp->close or die "Could not close new wikilist: $!";
chmod( 00644, $temp->filename ) or die "Could not fix mode of new wikilist: $!";
rename( $temp->filename, "/etc/ikiwiki/wikilist" ) or die "Could not rename over old wikilist: $!";
system( "rm", "-rf", $s->secure_path, $s->ikiwiki_destdir, $s->ikiwiki_srcdir, "/etc/ikiwiki/piny/" . $s->name . ".setup", $s->path );
my $ikiuser = Piny::User::IkiWiki->new( "name" => "iki-" . $s->name );
system( "deluser", "--remove-home", "iki-" . $s->shortname );
system( "delgroup", "iki-" . $s->shortname );
system( "delgroup", $s->group->name );
};
# Triggers
sub _set_description {
my ( $s, $new_description, $old_description ) = @_;
open( my $fd, ">", $s->path . "/description" ) or die "Unable to open " . $s->path . "/description for writing: $!";
print $fd $new_description;
close( $fd ) or die "Error when closing " . $s->path . "/description: $!";
};
sub _change_owner {
my ( $s, $new_owner, $old_owner ) = @_;
find( { wanted => sub { chown( $new_owner->uid, -1, $_ ) or die "Couldn't chown $_: $!"; }, no_chdir => 1 }, $s->path . "/objects" );
$s->clear_ikiwiki_setup;
};
# Class methods
sub all_repos {
my ( $class, $dir ) = @_;
$dir = "/srv/git" unless defined $dir;
my @ret;
find( { wanted => sub { if ( /^[^.].*\.git$/ ) { $File::Find::prune = 1; push( @ret, $File::Find::name ); }; } }, $dir );
@ret = map { s/^\Q$dir\E\/?//; s/\.git$//; $class->new( name => $_ ); } @ret;
return @ret;
};
# Only sets up needed data; ->rebuild takes care of the rest.
sub create {
my ( $class, $name, $description ) = @_;
my $user = Piny::Environment->instance->user;
find_type_constraint( "Reponame" )->assert_valid( $name );
find_type_constraint( "SimpleText" )->assert_valid( $description );
my $repo = $class->new( "name" => $name );
mkdir( $repo->path ) or die "The repo $name appears to already exist! ($!)";
$ENV{"GIT_DIR"} = $repo->path;
system( "/usr/bin/git", "init", "--template=/srv/git-template.git", "--quiet", "--shared" ) and die "Could not initialize git repo!";
system( "/bin/chown", "-R", $user->name, $repo->path . "/objects" ) and die "Could not change ownership of $_ for repo: $!";
delete $ENV{"GIT_DIR"};
$repo->description( $description );
$repo->rebuild;
return $repo;
};
# Builder methods
# If constructed with just one argument, then treat it as a repo name.
around BUILDARGS => sub {
my ( $orig, $class ) = ( shift, shift );
if ( @_ == 1 && ! ref $_[0] ) {
return $class->$orig( name => $_[0] );
} else {
return $class->$orig( @_ );
};
};
my @letter1 = ( 'a' .. 'z' ); # First digit is base 26.
my @lettern = ( '0' .. '9', 'a' .. 'z', '-', '_' ); # Remaining digits are base 38.
sub _build_shortname {
my ( $s ) = @_;
my $str = $s->name;
# Short inputs don't need to be hashed.
return $str if length $str <= 28;
# We have to use Math::GMP here instead of Math::BigInt or pragma bignum
# support because we actually require infinite precision integer arithmetic,
# and bignum tends to only give us 40 decimal digits of precision during
# division because the Perl maintainers are jackasses.
my $n = Math::GMP->new( "0x" . sha256_hex( $str ) );
my ( $m );
# First digit.
( $n, $m ) = $n->bdiv( scalar @letter1 );
my $out = $letter1[$m];
# Remaining digits.
while ( length $out < 28 and $n > 0 ) {
( $n, $m ) = $n->bdiv( scalar @lettern );
$out .= $lettern[$m];
};
return $out;
};
sub _build_group {
my ( $s ) = @_;
return Piny::Group->new( name => "git-" . $s->shortname );
};
sub _build_path {
my ( $s ) = @_;
return "/srv/git/" . $s->name . ".git";
};
sub _build_description {
my ( $s ) = @_;
open( my $d, "<", $s->path . "/description" ) or die "Unable to open " . $s->path . "/description: $!";
my $desc;
{
local $/ = undef;
$desc = <$d>;
};
close( $d );
return $desc;
};
sub _build_repostat {
my ( $s ) = @_;
my @res = stat( $s->path . "/objects" );
die "stat( " . $s->path . "/objects ) failed: $!" unless @res;
return \@res;
};
sub _build_owner {
my ( $s ) = @_;
my ( $uid ) = $s->repostat->[4];
return Piny::User->new( uid => $uid );
};
sub _build_globally_readable {
my ( $s ) = @_;
return ( $s->repostat->[2] & 0444 ) == 0444;
};
sub _build_globally_writable {
my ( $s ) = @_;
return ( $s->repostat->[2] & 0111 ) == 0111;
};
sub _build_cgit_url {
my ( $s ) = @_;
return $s->config->piny_ikiwikisecureurl . "cgit/" . $s->name;
}
sub _build_ikiwiki_setup {
my ( $s ) = @_;
my ( $package, $config ) = readSetup( "/usr/share/libpiny/ikiwiki.setup" );
$config->{"wikiname"} = $s->name;
$config->{"adminemail"} = $s->owner->email->address;
$config->{"srcdir"} = $s->ikiwiki_srcdir;
$config->{"destdir"} = $s->ikiwiki_destdir;
$config->{"url"} = $s->ikiwiki_url;
$config->{"cgiurl"} = $s->ikiwiki_cgiurl;
$config->{"historyurl"} = $s->ikiwiki_historyurl;
$config->{"diffurl"} = $s->ikiwiki_diffurl;
$config->{"wrappers"} =
[ { "wrapper" => $s->ikiwiki_cgipath
, "wrappergroup" => $s->group->name
, "wrappermode" => "06755"
, "cgi" => 1
}
, { "wrapper" => $s->path . "/hooks/post-update"
, "wrappergroup" => $s->group->name
, "wrappermode" => "06755"
, "notify" => 0
}
];
if ( -e "/etc/ikiwiki/piny/" . $s->name . ".setup.pl" ) {
system( "perl", "-C", "/etc/ikiwiki/piny/" . $s->name . ".setup.pl" ) && die ( 'Failed to compile ikiwiki overrides file!' );
undef $@;
eval {
package TEMP;
use Piny;
$TEMP::repo = $s;
$TEMP::conf = $config;
no strict 'vars';
do "/etc/ikiwiki/piny/" . $s->name . ".setup.pl";
};
};
return writeSetup( $package, $config );
};
sub _build_ikiwiki_destdir {
my ( $s ) = @_;
return $s->config->piny_ikiwikidestdir . $s->name;
};
sub _build_ikiwiki_srcdir {
my ( $s ) = @_;
return $s->config->piny_ikiwikisrcdir . $s->name;
};
sub _build_ikiwiki_url {
my ( $s ) = @_;
return $s->config->piny_ikiwikiurl . $s->name;
};
sub _build_ikiwiki_cgiurl {
my ( $s ) = @_;
return $s->config->piny_ikiwikisecureurl . "repos/" . $s->name . "/ikiwiki.cgi";
};
sub _build_secure_path {
my ( $s ) = @_;
return $s->config->piny_ikiwikisecurepath . "repos/" . $s->name;
};
sub _build_ikiwiki_cgipath {
my ( $s ) = @_;
return $s->secure_path . "/ikiwiki.cgi";
};
sub _build_ikiwiki_historyurl {
my ( $s ) = @_;
if ( defined $s->config->{"https_url"} ) {
return $s->config->{"https_url"} . "cgit/" . $s->name . "/log/[[file]]";
} else {
return $s->config->piny_ikiwikisecureurl . "cgit/" . $s->name . "/log/[[file]]";
};
};
sub _build_ikiwiki_diffurl {
my ( $s ) = @_;
if ( defined $s->config->{"https_url"} ) {
return $s->config->{"https_url"} . "cgit/" . $s->name . "/diff/?id=[[sha1_commit]]";
} else {
return $s->config->piny_ikiwikisecureurl . "cgit/" . $s->name . "/diff/?id=[[sha1_commit]]";
};
};
sub _build_apache_config {
my ( $s ) = @_;
return "<Directory " . $s->secure_path . ">\n AuthPAM_Enabled on\n AuthGROUP_Enabled on\n AuthPAM_FallThrough off\n AuthBasicAuthoritative off\n AuthType Basic\n AuthName \"User access to " . $s->name . " repository needed.\"\n Require group " . $s->group->name . "\n</Directory>\n";
};
sub _build_config {
my ( $s ) = @_;
return Piny::Config->new( confpath => $s->path . "/config" );
};
# Moose boilerplate
__PACKAGE__->meta->make_immutable;
1;
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