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| | #!/usr/bin/perl -w
# Copyright (C) 2014-2019 all contributors <meta@public-inbox.org>
# License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
#
# Initializes a public-inbox, basically a wrapper for git-init(1)
use strict;
use warnings;
my $usage = "public-inbox-init NAME INBOX_DIR HTTP_URL ADDRESS [ADDRESS..]";
use Getopt::Long qw/:config gnu_getopt no_ignore_case auto_abbrev/;
use PublicInbox::Admin;
PublicInbox::Admin::require_or_die('-base');
require PublicInbox::Config;
require PublicInbox::InboxWritable;
use File::Temp qw/tempfile/;
use PublicInbox::Lock;
use File::Basename qw/dirname/;
use File::Path qw/mkpath/;
use Fcntl qw(:DEFAULT);
use Cwd qw/abs_path/;
sub x { system(@_) and die join(' ', @_). " failed: $?\n" }
sub usage { print STDERR "Usage: $usage\n"; exit 1 }
my $version = undef;
my $indexlevel = undef;
my $skip_epoch;
my %opts = (
'V|version=i' => \$version,
'L|indexlevel=s' => \$indexlevel,
'S|skip|skip-epoch=i' => \$skip_epoch,
);
GetOptions(%opts) or usage();
PublicInbox::Admin::indexlevel_ok_or_die($indexlevel) if defined $indexlevel;
my $name = shift @ARGV or usage();
my $inboxdir = shift @ARGV or usage();
my $http_url = shift @ARGV or usage();
my (@address) = @ARGV;
@address or usage();
my %seen;
my $pi_config = PublicInbox::Config->default_file;
my $dir = dirname($pi_config);
mkpath($dir); # will croak on fatal errors
# first, we grab a flock to prevent simultaneous public-inbox-init
# processes from trampling over each other, or exiting with 255 on
# O_EXCL failure below. This gets unlocked automatically on exit:
my $lock_obj = { lock_path => "$pi_config.flock" };
PublicInbox::Lock::lock_acquire($lock_obj);
# git-config will operate on this (and rename on success):
my ($fh, $pi_config_tmp) = tempfile('pi-init-XXXXXXXX', DIR => $dir);
# Now, we grab another lock to use git-config(1) locking, so it won't
# wait on the lock, unlike some of our internal flock()-based locks.
# This is to prevent direct git-config(1) usage from clobbering our
# changes.
my $lockfile = "$pi_config.lock";
my $lockfh;
sysopen($lockfh, $lockfile, O_RDWR|O_CREAT|O_EXCL) or do {
$lockfh = undef;
warn "could not open config file: $lockfile: $!\n";
exit(255);
};
END { unlink($lockfile) if $lockfh };
my $perm;
if (-e $pi_config) {
open(my $oh, '<', $pi_config) or die "unable to read $pi_config: $!\n";
my @st = stat($oh);
$perm = $st[2];
defined $perm or die "(f)stat failed on $pi_config: $!\n";
chmod($perm & 07777, $fh) or
die "(f)chmod failed on future $pi_config: $!\n";
my $old;
{
local $/;
$old = <$oh>;
}
print $fh $old or die "failed to write: $!\n";
close $oh or die "failed to close $pi_config: $!\n";
# yes, this conflict checking is racy if multiple instances of this
# script are run by the same $PI_DIR
my $cfg = PublicInbox::Config->new;
my $conflict;
foreach my $addr (@address) {
my $found = $cfg->lookup($addr);
if ($found) {
if ($found->{name} ne $name) {
print STDERR
"`$addr' already defined for ",
"`$found->{name}',\n",
"does not match intend `$name'\n";
$conflict = 1;
} else {
$seen{lc($addr)} = 1;
}
}
}
exit(1) if $conflict;
my $ibx = $cfg->lookup_name($name);
if ($ibx) {
if (!defined($indexlevel) && $ibx->{indexlevel}) {
$indexlevel = $ibx->{indexlevel};
}
}
}
close $fh or die "failed to close $pi_config_tmp: $!\n";
my $pfx = "publicinbox.$name";
my @x = (qw/git config/, "--file=$pi_config_tmp");
$inboxdir = abs_path($inboxdir);
if (-f "$inboxdir/inbox.lock") {
if (!defined $version) {
$version = 2;
} elsif ($version != 2) {
die "$inboxdir is a -V2 repo, -V$version specified\n"
}
} elsif (-d "$inboxdir/objects") {
if (!defined $version) {
$version = 1;
} elsif ($version != 1) {
die "$inboxdir is a -V1 repo, -V$version specified\n"
}
}
$version = 1 unless defined $version;
if ($version == 1 && defined $skip_epoch) {
die "--skip-epoch is only supported for -V2 repos\n";
}
my $ibx = PublicInbox::Inbox->new({
inboxdir => $inboxdir,
name => $name,
version => $version,
-primary_address => $address[0],
indexlevel => $indexlevel,
});
my $creat_opt = {};
PublicInbox::InboxWritable->new($ibx, $creat_opt)->init_inbox(0, $skip_epoch);
# needed for git prior to v2.1.0
umask(0077) if defined $perm;
foreach my $addr (@address) {
next if $seen{lc($addr)};
x(@x, "--add", "$pfx.address", $addr);
}
x(@x, "$pfx.url", $http_url);
x(@x, "$pfx.inboxdir", $inboxdir);
if (defined($indexlevel)) {
x(@x, "$pfx.indexlevel", $indexlevel);
}
# needed for git prior to v2.1.0
if (defined $perm) {
chmod($perm & 07777, $pi_config_tmp) or
die "(f)chmod failed on future $pi_config: $!\n";
}
rename $pi_config_tmp, $pi_config or
die "failed to rename `$pi_config_tmp' to `$pi_config': $!\n";
|