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scripts/download.pl: add SHA-256 support

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Signed-off-by: Felix Fietkau <nbd@openwrt.org>

SVN-Revision: 48253
This commit is contained in:
Felix Fietkau 2016-01-16 00:19:41 +00:00
parent 39f385d0d6
commit eaa4eba10a
1 changed files with 38 additions and 20 deletions
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46
scripts/download.pl
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@ -11,12 +11,12 @@ use warnings;
use File::Basename;
use File::Copy;
@ARGV > 2 or die "Syntax: $0 <target dir> <filename> <md5sum> <url filename> [<mirror> ...]\n";
@ARGV > 2 or die "Syntax: $0 <target dir> <filename> <hash> <url filename> [<mirror> ...]\n";
my $url_filename;
my $target = shift @ARGV;
my $filename = shift @ARGV;
my $md5sum = shift @ARGV;
my $file_hash = shift @ARGV;
$url_filename = shift @ARGV unless $ARGV[0] =~ /:\/\//;
my $scriptdir = dirname($0);
my @mirrors;
@ -59,8 +59,20 @@ sub which($) {
return $res;
}
my $md5cmd = which("md5sum") || which("md5") || die 'no md5 checksum program found, please install md5 or md5sum';
chomp $md5cmd;
sub hash_cmd() {
my $len = length($file_hash);
my $cmd;
$len == 64 and return "openssl dgst -sha256";
$len == 32 and do {
my $cmd = which("md5sum") || which("md5") || die 'no md5 checksum program found, please install md5 or md5sum';
chomp $cmd;
return $cmd;
};
return undef;
}
my $hash_cmd = hash_cmd();
sub download
{
@ -105,20 +117,24 @@ sub download
print("Copying $filename from $link\n");
copy($link, "$target/$filename.dl");
if (system("$md5cmd '$target/$filename.dl' > '$target/$filename.md5sum'")) {
print("Failed to generate md5 sum for $filename\n");
$hash_cmd and do {
if (system("$hash_cmd '$target/$filename.dl' > '$target/$filename.hash'")) {
print("Failed to generate hash for $filename\n");
return;
}
};
} else {
open WGET, "wget -t5 --timeout=20 --no-check-certificate $options -O- '$mirror/$url_filename' |" or die "Cannot launch wget.\n";
open MD5SUM, "| $md5cmd > '$target/$filename.md5sum'" or die "Cannot launch md5sum.\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 WGET, $buffer, 1048576) {
print MD5SUM $buffer;
$hash_cmd and print MD5SUM $buffer;
print OUTPUT $buffer;
}
close MD5SUM;
$hash_cmd and close MD5SUM;
close WGET;
close OUTPUT;
@ -129,15 +145,17 @@ sub download
}
}
my $sum = `cat "$target/$filename.md5sum"`;
$sum =~ /^(\w+)\s*/ or die "Could not generate md5sum\n";
$hash_cmd and do {
my $sum = `cat "$target/$filename.hash"`;
$sum =~ /^(\w+)\s*/ or die "Could not generate file hash\n";
$sum = $1;
if (($md5sum =~ /\w{32}/) and ($sum ne $md5sum)) {
print STDERR "MD5 sum of the downloaded file does not match (file: $sum, requested: $md5sum) - deleting download.\n";
if ($sum ne $file_hash) {
print STDERR "MD5 sum 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/$filename");
@ -147,7 +165,7 @@ sub download
sub cleanup
{
unlink "$target/$filename.dl";
unlink "$target/$filename.md5sum";
unlink "$target/$filename.hash";
}
@mirrors = localmirrors();