openwrtv4/scripts/download.pl
Jo-Philipp Wich f4b9d9d6f1 base-files: allow skipping of hash verification
When calling a download target, hash verification is now completely
skipped if we set PKG_HASH=skip.

This allows to easily bump package version:

$ make package/<mypackage>/download PKG_HASH=skip V=s
$ make package/<mypackage>/check FIXUP=1 V=s

This will download the new version of the package, and then automatically
update PKG_HASH with the hash of the new version.  Of course, it is still
the responsibility of the packager to ensure that the new tarball is
legitimate, because it is downloaded from a possibly untrusted source.

Fixes: b30ba14e ("scripts/download.pl: fail loudly if provided hash is unsupported")
Signed-off-by: Baptiste Jonglez <git@bitsofnetworks.org>
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
Acked-by: Stijn Tintel <stijn@linux-ipv6.be>
Signed-off-by: John Crispin <john@phrozen.org>
2017-12-14 09:29:31 +01:00

273 lines
8 KiB
Perl
Executable file

#!/usr/bin/env perl
#
# Copyright (C) 2006 OpenWrt.org
# Copyright (C) 2016 LEDE project
#
# This is free software, licensed under the GNU General Public License v2.
# See /LICENSE for more information.
#
use strict;
use warnings;
use File::Basename;
use File::Copy;
use Text::ParseWords;
@ARGV > 2 or die "Syntax: $0 <target dir> <filename> <hash> <url filename> [<mirror> ...]\n";
my $url_filename;
my $target = glob(shift @ARGV);
my $filename = shift @ARGV;
my $file_hash = shift @ARGV;
$url_filename = shift @ARGV unless $ARGV[0] =~ /:\/\//;
my $scriptdir = dirname($0);
my @mirrors;
my $ok;
$url_filename or $url_filename = $filename;
sub localmirrors {
my @mlist;
open LM, "$scriptdir/localmirrors" and do {
while (<LM>) {
chomp $_;
push @mlist, $_ if $_;
}
close LM;
};
open CONFIG, "<".$ENV{'TOPDIR'}."/.config" and do {
while (<CONFIG>) {
/^CONFIG_LOCALMIRROR="(.+)"/ and do {
chomp;
my @local_mirrors = split(/;/, $1);
push @mlist, @local_mirrors;
};
}
close CONFIG;
};
my $mirror = $ENV{'DOWNLOAD_MIRROR'};
$mirror and push @mlist, split(/;/, $mirror);
return @mlist;
}
sub which($) {
my $prog = shift;
my $res = `which $prog`;
$res or return undef;
$res =~ /^no / and return undef;
$res =~ /not found/ and return undef;
return $res;
}
sub hash_cmd() {
my $len = length($file_hash);
my $cmd;
$len == 64 and return "mkhash sha256";
$len == 32 and return "mkhash md5";
return undef;
}
sub download_cmd($) {
my $url = shift;
my $have_curl = 0;
if (open CURL, '-|', 'curl', '--version') {
if (defined(my $line = readline CURL)) {
$have_curl = 1 if $line =~ /^curl /;
}
close CURL;
}
return $have_curl
? (qw(curl -f --connect-timeout 20 --retry 5 --location --insecure), shellwords($ENV{CURL_OPTIONS} || ''), $url)
: (qw(wget --tries=5 --timeout=20 --no-check-certificate --output-document=-), shellwords($ENV{WGET_OPTIONS} || ''), $url)
;
}
my $hash_cmd = hash_cmd();
$hash_cmd or ($file_hash eq "skip") or die "Cannot find appropriate hash command, ensure the provided hash is either a MD5 or SHA256 checksum.\n";
sub download
{
my $mirror = shift;
$mirror =~ s!/$!!;
if ($mirror =~ s!^file://!!) {
if (! -d "$mirror") {
print STDERR "Wrong local cache directory -$mirror-.\n";
cleanup();
return;
}
if (! -d "$target") {
system("mkdir", "-p", "$target/");
}
if (! open TMPDLS, "find $mirror -follow -name $filename 2>/dev/null |") {
print("Failed to search for $filename in $mirror\n");
return;
}
my $link;
while (defined(my $line = readline TMPDLS)) {
chomp ($link = $line);
if ($. > 1) {
print("$. or more instances of $filename in $mirror found . Only one instance allowed.\n");
return;
}
}
close TMPDLS;
if (! $link) {
print("No instances of $filename found in $mirror.\n");
return;
}
print("Copying $filename from $link\n");
copy($link, "$target/$filename.dl");
$hash_cmd and do {
if (system("cat '$target/$filename.dl' | $hash_cmd > '$target/$filename.hash'")) {
print("Failed to generate hash for $filename\n");
return;
}
};
} else {
my @cmd = download_cmd("$mirror/$url_filename");
print STDERR "+ ".join(" ",@cmd)."\n";
open(FETCH_FD, '-|', @cmd) or die "Cannot launch curl or wget.\n";
$hash_cmd and do {
open MD5SUM, "| $hash_cmd > '$target/$filename.hash'" or die "Cannot launch $hash_cmd.\n";
};
open OUTPUT, "> $target/$filename.dl" or die "Cannot create file $target/$filename.dl: $!\n";
my $buffer;
while (read FETCH_FD, $buffer, 1048576) {
$hash_cmd and print MD5SUM $buffer;
print OUTPUT $buffer;
}
$hash_cmd and close MD5SUM;
close FETCH_FD;
close OUTPUT;
if ($? >> 8) {
print STDERR "Download failed.\n";
cleanup();
return;
}
}
$hash_cmd and do {
my $sum = `cat "$target/$filename.hash"`;
$sum =~ /^(\w+)\s*/ or die "Could not generate file hash\n";
$sum = $1;
if ($sum ne $file_hash) {
print STDERR "Hash of the downloaded file does not match (file: $sum, requested: $file_hash) - deleting download.\n";
cleanup();
return;
}
};
unlink "$target/$filename";
system("mv", "$target/$filename.dl", "$target/$filename");
cleanup();
}
sub cleanup
{
unlink "$target/$filename.dl";
unlink "$target/$filename.hash";
}
@mirrors = localmirrors();
foreach my $mirror (@ARGV) {
if ($mirror =~ /^\@SF\/(.+)$/) {
# give sourceforge a few more tries, because it redirects to different mirrors
for (1 .. 5) {
push @mirrors, "http://downloads.sourceforge.net/$1";
}
} elsif ($mirror =~ /^\@APACHE\/(.+)$/) {
push @mirrors, "https://mirror.netcologne.de/apache.org/$1";
push @mirrors, "https://mirror.aarnet.edu.au/pub/apache/$1";
push @mirrors, "https://mirror.csclub.uwaterloo.ca/apache/$1";
push @mirrors, "http://mirror.cogentco.com/pub/apache/$1";
push @mirrors, "http://mirror.navercorp.com/apache/$1";
push @mirrors, "http://ftp.jaist.ac.jp/pub/apache/$1";
push @mirrors, "ftp://apache.cs.utah.edu/apache.org/$1";
push @mirrors, "ftp://apache.mirrors.ovh.net/ftp.apache.org/dist/$1";
} elsif ($mirror =~ /^\@GITHUB\/(.+)$/) {
# give github a few more tries (different mirrors)
for (1 .. 5) {
push @mirrors, "https://raw.githubusercontent.com/$1";
}
} elsif ($mirror =~ /^\@GNU\/(.+)$/) {
push @mirrors, "https://mirror.csclub.uwaterloo.ca/gnu/$1";
push @mirrors, "https://mirror.netcologne.de/gnu/$1";
push @mirrors, "http://ftp.kddilabs.jp/GNU/gnu/$1";
push @mirrors, "http://www.nic.funet.fi/pub/gnu/gnu/$1";
push @mirrors, "http://mirror.internode.on.net/pub/gnu/$1";
push @mirrors, "http://mirror.navercorp.com/gnu/$1";
push @mirrors, "ftp://mirrors.rit.edu/gnu/$1";
push @mirrors, "ftp://download.xs4all.nl/pub/gnu/";
} elsif ($mirror =~ /^\@SAVANNAH\/(.+)$/) {
push @mirrors, "https://mirror.netcologne.de/savannah/$1";
push @mirrors, "https://mirror.csclub.uwaterloo.ca/nongnu/$1";
push @mirrors, "http://ftp.acc.umu.se/mirror/gnu.org/savannah/$1";
push @mirrors, "http://nongnu.uib.no/$1";
push @mirrors, "http://ftp.igh.cnrs.fr/pub/nongnu/$1";
push @mirrors, "http://public.p-knowledge.co.jp/Savannah-nongnu-mirror/$1";
push @mirrors, "ftp://cdimage.debian.org/mirror/gnu.org/savannah/$1";
push @mirrors, "ftp://ftp.acc.umu.se/mirror/gnu.org/savannah/$1";
} elsif ($mirror =~ /^\@KERNEL\/(.+)$/) {
my @extra = ( $1 );
if ($filename =~ /linux-\d+\.\d+(?:\.\d+)?-rc/) {
push @extra, "$extra[0]/testing";
} elsif ($filename =~ /linux-(\d+\.\d+(?:\.\d+)?)/) {
push @extra, "$extra[0]/longterm/v$1";
}
foreach my $dir (@extra) {
push @mirrors, "https://cdn.kernel.org/pub/$dir";
push @mirrors, "https://mirror.rackspace.com/kernel.org/$dir";
push @mirrors, "http://download.xs4all.nl/ftp.kernel.org/pub/$dir";
push @mirrors, "http://mirrors.mit.edu/kernel/$dir";
push @mirrors, "http://ftp.nara.wide.ad.jp/pub/kernel.org/$dir";
push @mirrors, "http://www.ring.gr.jp/archives/linux/kernel.org/$dir";
push @mirrors, "ftp://ftp.riken.jp/Linux/kernel.org/$dir";
push @mirrors, "ftp://www.mirrorservice.org/sites/ftp.kernel.org/pub/$dir";
}
} elsif ($mirror =~ /^\@GNOME\/(.+)$/) {
push @mirrors, "https://mirror.csclub.uwaterloo.ca/gnome/sources/$1";
push @mirrors, "http://ftp.acc.umu.se/pub/GNOME/sources/$1";
push @mirrors, "http://ftp.kaist.ac.kr/gnome/sources/$1";
push @mirrors, "http://www.mirrorservice.org/sites/ftp.gnome.org/pub/GNOME/sources/$1";
push @mirrors, "http://mirror.internode.on.net/pub/gnome/sources/$1";
push @mirrors, "http://ftp.belnet.be/ftp.gnome.org/sources/$1";
push @mirrors, "ftp://ftp.cse.buffalo.edu/pub/Gnome/sources/$1";
push @mirrors, "ftp://ftp.nara.wide.ad.jp/pub/X11/GNOME/sources/$1";
}
else {
push @mirrors, $mirror;
}
}
#push @mirrors, 'http://mirror1.openwrt.org';
push @mirrors, 'http://sources.lede-project.org';
push @mirrors, 'http://mirror2.openwrt.org/sources';
push @mirrors, 'http://downloads.openwrt.org/sources';
while (!-f "$target/$filename") {
my $mirror = shift @mirrors;
$mirror or die "No more mirrors to try - giving up.\n";
download($mirror);
}
$SIG{INT} = \&cleanup;