lix/scripts/nix-pull-prebuilts
Eelco Dolstra f8d91f20e6 * Nix can now fetch prebuilts (and other files) from the network, iff
a mapping from the hash to a url has been registered through `nix
  regurl'.

* Bug fix in nix: don't pollute stdout when running tar, it made
  nix-switch barf.

* Bug fix in nix-push-prebuilts: don't create a subdirectory on the
  target when rsync'ing.
2003-05-26 09:44:18 +00:00

82 lines
1.8 KiB
Perl
Executable file

#! /usr/bin/perl -w
my $prefix = $ENV{"NIX"} || "/nix"; # !!! use prefix
my $etcdir = "$prefix/etc/nix";
my $knowns = "$prefix/var/nix/known-prebuilts";
my $tmpfile = "$prefix/var/nix/prebuilts.tmp";
my $conffile = "$etcdir/prebuilts.conf";
sub register {
my $fn = shift;
my $url = shift;
return unless $fn =~ /([^\/]*)-([0-9a-z]{32})-([0-9a-z]{32})\.tar\.bz2/;
my $id = $1;
my $pkghash = $2;
my $prebuilthash = $3;
print "$pkghash => $prebuilthash ($id)\n";
system "nix regprebuilt $pkghash $prebuilthash";
if ($?) { die "`nix regprebuilt' failed"; }
if ($url =~ /^\//) {
system "nix regfile $url";
if ($?) { die "`nix regfile' failed"; }
} else {
system "nix regurl $prebuilthash $url";
if ($?) { die "`nix regurl' failed"; }
}
print KNOWNS "$pkghash\n";
}
open KNOWNS, ">$knowns";
open CONFFILE, "<$conffile";
while (<CONFFILE>) {
chomp;
if (/^\s*(\S+)\s*(\#.*)?$/) {
my $url = $1;
print "obtaining prebuilt list from $url...\n";
if ($url =~ /^\//) {
# It's a local path.
foreach my $fn (glob "$url/*") {
register($fn, $fn);
}
} else {
# It's a URL.
system "wget '$url' -O '$tmpfile' 2> /dev/null"; # !!! escape
if ($?) { die "`wget' failed"; }
open INDEX, "<$tmpfile";
while (<INDEX>) {
# Get all links to prebuilts, that is, file names of the
# form foo-HASH-HASH.tar.bz2.
next unless (/HREF=\"([^\"]*)\"/);
my $fn = $1;
next if $fn =~ /\.\./;
next if $fn =~ /\//;
register($fn, "$url/$fn");
}
close INDEX;
unlink $tmpfile;
}
}
}
close CONFFILE;
close KNOWNS;