97 lines
2.5 KiB
Perl
Executable file
97 lines
2.5 KiB
Perl
Executable file
#! /run/current-system/sw/bin/perl -w
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use strict;
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use XML::Simple;
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use File::Basename;
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use File::Path;
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use File::Copy 'cp';
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use IPC::Open2;
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use Nix::Store;
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my $myDir = dirname($0);
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my $tarballsCache = $ENV{'NIX_TARBALLS_CACHE'} // "/tarballs";
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my $xml = `nix-instantiate --eval-only --xml --strict '<nixpkgs/maintainers/scripts/find-tarballs.nix>'`;
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die "$0: evaluation failed\n" if $? != 0;
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my $data = XMLin($xml) or die;
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mkpath($tarballsCache);
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mkpath("$tarballsCache/md5");
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mkpath("$tarballsCache/sha1");
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mkpath("$tarballsCache/sha256");
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foreach my $file (@{$data->{list}->{attrs}}) {
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my $url = $file->{attr}->{url}->{string}->{value};
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my $algo = $file->{attr}->{type}->{string}->{value};
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my $hash = $file->{attr}->{hash}->{string}->{value};
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if ($url !~ /^http:/ && $url !~ /^https:/ && $url !~ /^ftp:/ && $url !~ /^mirror:/) {
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print STDERR "skipping $url (unsupported scheme)\n";
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next;
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}
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$url =~ /([^\/]+)$/;
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my $fn = $1;
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if (!defined $fn) {
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print STDERR "skipping $url (no file name)\n";
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next;
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}
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if ($fn =~ /[&?=%]/ || $fn =~ /^\./) {
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print STDERR "skipping $url (bad character in file name)\n";
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next;
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}
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if ($fn !~ /[a-zA-Z]/) {
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print STDERR "skipping $url (no letter in file name)\n";
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next;
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}
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if ($fn !~ /[0-9]/) {
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print STDERR "skipping $url (no digit in file name)\n";
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next;
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}
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if ($fn !~ /[-_\.]/) {
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print STDERR "skipping $url (no dash/dot/underscore in file name)\n";
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next;
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}
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my $dstPath = "$tarballsCache/$fn";
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next if -e $dstPath;
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print "downloading $url to $dstPath...\n";
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next if $ENV{DRY_RUN};
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$ENV{QUIET} = 1;
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$ENV{PRINT_PATH} = 1;
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my $fh;
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my $pid = open($fh, "-|", "nix-prefetch-url", "--type", $algo, $url, $hash) or die;
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waitpid($pid, 0) or die;
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if ($? != 0) {
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print STDERR "failed to fetch $url: $?\n";
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next;
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}
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<$fh>; my $storePath = <$fh>; chomp $storePath;
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die unless -e $storePath;
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cp($storePath, $dstPath) or die;
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my $md5 = hashFile("md5", 0, $storePath) or die;
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symlink("../$fn", "$tarballsCache/md5/$md5");
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my $sha1 = hashFile("sha1", 0, $storePath) or die;
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symlink("../$fn", "$tarballsCache/sha1/$sha1");
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my $sha256 = hashFile("sha256", 0, $storePath) or die;
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symlink("../$fn", "$tarballsCache/sha256/$sha256");
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$sha256 = hashFile("sha256", 1, $storePath) or die;
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symlink("../$fn", "$tarballsCache/sha256/$sha256");
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}
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