scripts/download.pl - T108 - Gitiles

 #!/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 File::Path;
 use Text::ParseWords;
 use JSON::PP;

 @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;

 my $check_certificate = $ENV{DOWNLOAD_CHECK_CERTIFICATE} eq "y";
 my $custom_tool = $ENV{DOWNLOAD_TOOL_CUSTOM};
 my $download_tool;

 $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 projectsmirrors {
 	my $project = shift;
 	my $append = shift;

 	open (PM, "$scriptdir/projectsmirrors.json") ||
 		die "Can´t open $scriptdir/projectsmirrors.json: $!\n";
 	local $/;
 	my $mirror_json = <PM>;
 	my $mirror = decode_json $mirror_json;

 	foreach (@{$mirror->{$project}}) {
 		push @mirrors, $_ . "/" . ($append or "");
 	}
 }

 sub which($) {
 	my $prog = shift;
 	my $res = `command -v $prog`;
 	$res or return undef;
 	return $res;
 }

 sub hash_cmd() {
 	my $len = length($file_hash);
 	my $cmd;

 	$len == 64 and return "$ENV{'MKHASH'} sha256";
 	$len == 32 and return "$ENV{'MKHASH'} md5";
 	return undef;
 }

 sub tool_present {
 	my $tool_name = shift;
 	my $compare_line = shift;
 	my $present = 0;

 	if (open TOOL, "$tool_name --version 2>/dev/null |") {
 		if (defined(my $line = readline TOOL)) {
 			$present = 1 if $line =~ /^$compare_line /;
 		}
 		close TOOL;
 	}

 	return $present
 }

 sub select_tool {
 	$custom_tool =~ tr/"//d;
 	if ($custom_tool) {
 		return $custom_tool;
 	}

 	# Try to use curl if available
 	if (tool_present("curl", "curl")) {
 		return "curl";
 	}

 	# No tool found, fallback to wget
 	return "wget";
 }

 sub download_cmd {
 	my $url = shift;
 	my $filename = shift;

 	if ($download_tool eq "curl") {
 		return (qw(curl -f --connect-timeout 20 --retry 5 --location),
 			$check_certificate ? () : '--insecure',
 			shellwords($ENV{CURL_OPTIONS} || ''),
 			$url);
 	} elsif ($download_tool eq "wget") {
 		return (qw(wget --tries=5 --timeout=20 --output-document=-),
 			$check_certificate ? () : '--no-check-certificate',
 			shellwords($ENV{WGET_OPTIONS} || ''),
 			$url);
 	} elsif ($download_tool eq "aria2c") {
 		my $additional_mirrors = join(" ", map "$_/$filename", @_);
 		my @chArray = ('a'..'z', 'A'..'Z', 0..9);
 		my $rfn = join '', "${filename}_", map{ $chArray[int rand @chArray] } 0..9;

 		@mirrors=();

 		return join(" ", "[ -d $ENV{'TMPDIR'}/aria2c ] || mkdir $ENV{'TMPDIR'}/aria2c;",
 			"touch $ENV{'TMPDIR'}/aria2c/${rfn}_spp;",
 			qw(aria2c --stderr -c -x2 -s10 -j10 -k1M), $url, $additional_mirrors,
 			$check_certificate ? () : '--check-certificate=false',
 			"--server-stat-of=$ENV{'TMPDIR'}/aria2c/${rfn}_spp",
 			"--server-stat-if=$ENV{'TMPDIR'}/aria2c/${rfn}_spp",
 			"--daemon=false --no-conf", shellwords($ENV{ARIA2C_OPTIONS} || ''),
 			"-d $ENV{'TMPDIR'}/aria2c -o $rfn;",
 			"cat $ENV{'TMPDIR'}/aria2c/$rfn;",
 			"rm $ENV{'TMPDIR'}/aria2c/$rfn $ENV{'TMPDIR'}/aria2c/${rfn}_spp");
 	} else {
 		return join(" ", $download_tool, $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;
 	my $download_filename = shift;
 	my @additional_mirrors = @_;

 	$mirror =~ s!/$!!;

 	if ($mirror =~ s!^file://!!) {
 		if (! -d "$mirror") {
 			print STDERR "Wrong local cache directory -$mirror-.\n";
 			cleanup();
 			return;
 		}

 		if (! -d "$target") {
 			make_path($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/$download_filename", $download_filename, @additional_mirrors);
 		print STDERR "+ ".join(" ",@cmd)."\n";
 		open(FETCH_FD, '-|', @cmd) or die "Cannot launch aria2c, 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";
 	move("$target/$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) {
 			projectsmirrors '@SF', $1;
 		}
 	} elsif ($mirror =~ /^\@OPENWRT$/) {
 		# use OpenWrt source server directly
 	} elsif ($mirror =~ /^\@DEBIAN\/(.+)$/) {
 		projectsmirrors '@DEBIAN', $1;
 	} elsif ($mirror =~ /^\@APACHE\/(.+)$/) {
 		projectsmirrors '@APACHE', $1;
 	} elsif ($mirror =~ /^\@GITHUB\/(.+)$/) {
 		# give github a few more tries (different mirrors)
 		for (1 .. 5) {
 			projectsmirrors '@GITHUB', $1;
 		}
 	} elsif ($mirror =~ /^\@GNU\/(.+)$/) {
 		projectsmirrors '@GNU', $1;
 	} elsif ($mirror =~ /^\@SAVANNAH\/(.+)$/) {
 		projectsmirrors '@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) {
 			projectsmirrors '@KERNEL', $dir;
 		}
 	} elsif ($mirror =~ /^\@GNOME\/(.+)$/) {
 		projectsmirrors '@GNOME', $1;
 	} else {
 		push @mirrors, $mirror;
 	}
 }

 projectsmirrors '@OPENWRT';

 if (-f "$target/$filename") {
 	$hash_cmd and do {
 		if (system("cat '$target/$filename' | $hash_cmd > '$target/$filename.hash'")) {
 			die "Failed to generate hash for $filename\n";
 		}

 		my $sum = `cat "$target/$filename.hash"`;
 		$sum =~ /^(\w+)\s*/ or die "Could not generate file hash\n";
 		$sum = $1;

 		cleanup();
 		exit 0 if $sum eq $file_hash;

 		die "Hash of the local file $filename does not match (file: $sum, requested: $file_hash) - deleting download.\n";
 		unlink "$target/$filename";
 	};
 }

 $download_tool = select_tool();

 while (!-f "$target/$filename") {
 	my $mirror = shift @mirrors;
 	$mirror or die "No more mirrors to try - giving up.\n";

 	download($mirror, $url_filename, @mirrors);
 	if (!-f "$target/$filename" && $url_filename ne $filename) {
 		download($mirror, $filename, @mirrors);
 	}
 }

 $SIG{INT} = \&cleanup;
	#!/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 File::Path;
	use Text::ParseWords;
	use JSON::PP;

	@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;

	my $check_certificate = $ENV{DOWNLOAD_CHECK_CERTIFICATE} eq "y";
	my $custom_tool = $ENV{DOWNLOAD_TOOL_CUSTOM};
	my $download_tool;

	$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 projectsmirrors {
	my $project = shift;
	my $append = shift;

	open (PM, "$scriptdir/projectsmirrors.json") \|\|
	die "Can´t open $scriptdir/projectsmirrors.json: $!\n";
	local $/;
	my $mirror_json = <PM>;
	my $mirror = decode_json $mirror_json;

	foreach (@{$mirror->{$project}}) {
	push @mirrors, $_ . "/" . ($append or "");
	}
	}

	sub which($) {
	my $prog = shift;
	my $res = `command -v $prog`;
	$res or return undef;
	return $res;
	}

	sub hash_cmd() {
	my $len = length($file_hash);
	my $cmd;

	$len == 64 and return "$ENV{'MKHASH'} sha256";
	$len == 32 and return "$ENV{'MKHASH'} md5";
	return undef;
	}

	sub tool_present {
	my $tool_name = shift;
	my $compare_line = shift;
	my $present = 0;

	if (open TOOL, "$tool_name --version 2>/dev/null \|") {
	if (defined(my $line = readline TOOL)) {
	$present = 1 if $line =~ /^$compare_line /;
	}
	close TOOL;
	}

	return $present
	}

	sub select_tool {
	$custom_tool =~ tr/"//d;
	if ($custom_tool) {
	return $custom_tool;
	}

	# Try to use curl if available
	if (tool_present("curl", "curl")) {
	return "curl";
	}

	# No tool found, fallback to wget
	return "wget";
	}

	sub download_cmd {
	my $url = shift;
	my $filename = shift;

	if ($download_tool eq "curl") {
	return (qw(curl -f --connect-timeout 20 --retry 5 --location),
	$check_certificate ? () : '--insecure',
	shellwords($ENV{CURL_OPTIONS} \|\| ''),
	$url);
	} elsif ($download_tool eq "wget") {
	return (qw(wget --tries=5 --timeout=20 --output-document=-),
	$check_certificate ? () : '--no-check-certificate',
	shellwords($ENV{WGET_OPTIONS} \|\| ''),
	$url);
	} elsif ($download_tool eq "aria2c") {
	my $additional_mirrors = join(" ", map "$_/$filename", @_);
	my @chArray = ('a'..'z', 'A'..'Z', 0..9);
	my $rfn = join '', "${filename}_", map{ $chArray[int rand @chArray] } 0..9;

	@mirrors=();

	return join(" ", "[ -d $ENV{'TMPDIR'}/aria2c ] \|\| mkdir $ENV{'TMPDIR'}/aria2c;",
	"touch $ENV{'TMPDIR'}/aria2c/${rfn}_spp;",
	qw(aria2c --stderr -c -x2 -s10 -j10 -k1M), $url, $additional_mirrors,
	$check_certificate ? () : '--check-certificate=false',
	"--server-stat-of=$ENV{'TMPDIR'}/aria2c/${rfn}_spp",
	"--server-stat-if=$ENV{'TMPDIR'}/aria2c/${rfn}_spp",
	"--daemon=false --no-conf", shellwords($ENV{ARIA2C_OPTIONS} \|\| ''),
	"-d $ENV{'TMPDIR'}/aria2c -o $rfn;",
	"cat $ENV{'TMPDIR'}/aria2c/$rfn;",
	"rm $ENV{'TMPDIR'}/aria2c/$rfn $ENV{'TMPDIR'}/aria2c/${rfn}_spp");
	} else {
	return join(" ", $download_tool, $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;
	my $download_filename = shift;
	my @additional_mirrors = @_;

	$mirror =~ s!/$!!;

	if ($mirror =~ s!^file://!!) {
	if (! -d "$mirror") {
	print STDERR "Wrong local cache directory -$mirror-.\n";
	cleanup();
	return;
	}

	if (! -d "$target") {
	make_path($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/$download_filename", $download_filename, @additional_mirrors);
	print STDERR "+ ".join(" ",@cmd)."\n";
	open(FETCH_FD, '-\|', @cmd) or die "Cannot launch aria2c, 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";
	move("$target/$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) {
	projectsmirrors '@SF', $1;
	}
	} elsif ($mirror =~ /^\@OPENWRT$/) {
	# use OpenWrt source server directly
	} elsif ($mirror =~ /^\@DEBIAN\/(.+)$/) {
	projectsmirrors '@DEBIAN', $1;
	} elsif ($mirror =~ /^\@APACHE\/(.+)$/) {
	projectsmirrors '@APACHE', $1;
	} elsif ($mirror =~ /^\@GITHUB\/(.+)$/) {
	# give github a few more tries (different mirrors)
	for (1 .. 5) {
	projectsmirrors '@GITHUB', $1;
	}
	} elsif ($mirror =~ /^\@GNU\/(.+)$/) {
	projectsmirrors '@GNU', $1;
	} elsif ($mirror =~ /^\@SAVANNAH\/(.+)$/) {
	projectsmirrors '@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) {
	projectsmirrors '@KERNEL', $dir;
	}
	} elsif ($mirror =~ /^\@GNOME\/(.+)$/) {
	projectsmirrors '@GNOME', $1;
	} else {
	push @mirrors, $mirror;
	}
	}

	projectsmirrors '@OPENWRT';

	if (-f "$target/$filename") {
	$hash_cmd and do {
	if (system("cat '$target/$filename' \| $hash_cmd > '$target/$filename.hash'")) {
	die "Failed to generate hash for $filename\n";
	}

	my $sum = `cat "$target/$filename.hash"`;
	$sum =~ /^(\w+)\s*/ or die "Could not generate file hash\n";
	$sum = $1;

	cleanup();
	exit 0 if $sum eq $file_hash;

	die "Hash of the local file $filename does not match (file: $sum, requested: $file_hash) - deleting download.\n";
	unlink "$target/$filename";
	};
	}

	$download_tool = select_tool();

	while (!-f "$target/$filename") {
	my $mirror = shift @mirrors;
	$mirror or die "No more mirrors to try - giving up.\n";

	download($mirror, $url_filename, @mirrors);
	if (!-f "$target/$filename" && $url_filename ne $filename) {
	download($mirror, $filename, @mirrors);
	}
	}

	$SIG{INT} = \&cleanup;