132 lines
3.9 KiB
Perl
132 lines
3.9 KiB
Perl
#! @perl@ -w @perlFlags@
|
||
|
||
use strict;
|
||
use Nix::Config;
|
||
use Nix::Store;
|
||
|
||
|
||
my @binaryCacheUrls = split / /, ($ENV{"NIX_BINARY_CACHES"} || "");
|
||
|
||
|
||
sub getInfoFrom {
|
||
my ($storePath, $pathHash, $binaryCacheUrl) = @_;
|
||
my $infoUrl = "$binaryCacheUrl/$pathHash.narinfo";
|
||
#print STDERR "checking $infoUrl...\n";
|
||
my $s = `$Nix::Config::curl --fail --silent --location ${infoUrl}`;
|
||
if ($? != 0) {
|
||
#print STDERR "GOT CURL REPLY ", $? >> 8, "\n";
|
||
return undef;
|
||
}
|
||
my ($storePath2, $url, $compression, $fileHash, $fileSize, $narHash, $narSize, $deriver);
|
||
my @refs;
|
||
foreach my $line (split "\n", $s) {
|
||
$line =~ /^(.*): (.*)$/ or return undef;
|
||
if ($1 eq "StorePath") { $storePath2 = $2; }
|
||
elsif ($1 eq "URL") { $url = $2; }
|
||
elsif ($1 eq "Compression") { $compression = $2; }
|
||
elsif ($1 eq "FileHash") { $fileHash = $2; }
|
||
elsif ($1 eq "FileSize") { $fileSize = int($2); }
|
||
elsif ($1 eq "NarHash") { $narHash = $2; }
|
||
elsif ($1 eq "NarSize") { $narSize = int($2); }
|
||
elsif ($1 eq "References") { @refs = split / /, $2; }
|
||
elsif ($1 eq "Deriver") { $deriver = $2; }
|
||
}
|
||
if ($storePath ne $storePath2 || !defined $url || !defined $narHash || !defined $narSize) {
|
||
print STDERR "bad NAR info file ‘$infoUrl’\n";
|
||
return undef
|
||
}
|
||
return
|
||
{ url => $url
|
||
, compression => ($compression || "bzip2")
|
||
, fileHash => $fileHash
|
||
, fileSize => $fileSize
|
||
, narHash => $narHash
|
||
, narSize => $narSize
|
||
, refs => [ map { "$Nix::Config::storeDir/$_" } @refs ]
|
||
, deriver => "$Nix::Config::storeDir/$deriver"
|
||
}
|
||
}
|
||
|
||
|
||
sub getInfo {
|
||
my ($storePath) = @_;
|
||
|
||
my $pathHash = hashString("sha256", 1, $storePath);
|
||
|
||
cache: foreach my $binaryCacheUrl (@binaryCacheUrls) {
|
||
my $info = getInfoFrom($storePath, $pathHash, $binaryCacheUrl);
|
||
return $info if defined $info;
|
||
}
|
||
|
||
return undef;
|
||
}
|
||
|
||
|
||
sub downloadBinary {
|
||
my ($storePath) = @_;
|
||
|
||
my $pathHash = hashString("sha256", 1, $storePath);
|
||
|
||
cache: foreach my $binaryCacheUrl (@binaryCacheUrls) {
|
||
my $info = getInfoFrom($storePath, $pathHash, $binaryCacheUrl);
|
||
if (defined $info) {
|
||
my $decompressor;
|
||
if ($info->{compression} eq "bzip2") { $decompressor = "$Nix::Config::bzip2 -d"; }
|
||
elsif ($info->{compression} eq "xz") { $decompressor = "$Nix::Config::xz -d"; }
|
||
else {
|
||
print STDERR "unknown compression method ‘$info->{compression}’\n";
|
||
next;
|
||
}
|
||
if (system("$Nix::Config::curl --fail --location $binaryCacheUrl/$info->{url} | $decompressor | $Nix::Config::binDir/nix-store --restore $storePath") == 0) {
|
||
return 1;
|
||
}
|
||
}
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
|
||
if ($ARGV[0] eq "--query") {
|
||
|
||
while (<STDIN>) {
|
||
my $cmd = $_; chomp $cmd;
|
||
|
||
if ($cmd eq "have") {
|
||
my $storePath = <STDIN>; chomp $storePath;
|
||
# FIXME: want to give correct info here, but it's too slow.
|
||
print "0\n";
|
||
#my $info = getInfo($storePath);
|
||
#if (defined $info) { print "1\n"; } else { print "0\n"; }
|
||
}
|
||
|
||
elsif ($cmd eq "info") {
|
||
my $storePath = <STDIN>; chomp $storePath;
|
||
my $info = getInfo($storePath);
|
||
if (defined $info) {
|
||
print "1\n";
|
||
print $info->{deriver} || "", "\n";
|
||
print scalar @{$info->{refs}}, "\n";
|
||
print "$_\n" foreach @{$info->{refs}};
|
||
print $info->{fileSize} || 0, "\n";
|
||
print $info->{narSize}, "\n";
|
||
} else {
|
||
print "0\n";
|
||
}
|
||
}
|
||
|
||
else { die "unknown command `$cmd'"; }
|
||
|
||
flush STDOUT;
|
||
}
|
||
|
||
}
|
||
|
||
elsif ($ARGV[0] eq "--substitute") {
|
||
my $storePath = $ARGV[1] or die;
|
||
exit 1 unless downloadBinary($storePath);
|
||
}
|
||
|
||
else {
|
||
die;
|
||
}
|