From ef020d58538abb702b8181be990dba6424019b89 Mon Sep 17 00:00:00 2001
From: Maarten Vanraes <alien@mageia.org>
Date: Sun, 26 Feb 2012 16:11:40 +0000
Subject: Import version 0.2.4

---
 urpmi-proxy.cgi | 423 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 423 insertions(+)
 create mode 100755 urpmi-proxy.cgi

(limited to 'urpmi-proxy.cgi')

diff --git a/urpmi-proxy.cgi b/urpmi-proxy.cgi
new file mode 100755
index 0000000..12475a0
--- /dev/null
+++ b/urpmi-proxy.cgi
@@ -0,0 +1,423 @@
+#!/usr/bin/perl -w
+## written by Maarten Vanraes (c) 2009-2011
+## urpmi-proxy is GPLv2+
+
+use strict;
+use warnings;
+
+my $debug = 0;
+my $config_file = '/etc/urpmi-proxy.conf';
+
+# config defaults
+my $cache_tmp_path = '/var/tmp/urpmi-proxy';
+my $cache_path = '/var/cache/urpmi-proxy';
+my $logfile = '/var/log/urpmi-proxy.log';
+my $check_updates_only_files = 'MD5SUM';
+my $check_no_updates_files;
+my $merge_files = 'media.cfg';
+my $sources = [
+	'urpmi'
+];
+my $connect_timeout = 120;
+my $ftp_response_timeout = 30;
+my $max_stall_speed = 8192;
+my $max_stall_time = 60;
+
+# load config file
+if (-R $config_file) {
+	my $r = open(FILE, '<', $config_file);
+	if ($r) {
+		my $l = '';
+		while (<FILE>) {
+			$l .= $_;
+		}
+		eval $l;
+		close FILE;
+	}
+}
+print STDERR "logfile: $logfile\n" if $debug;
+
+my $sou;
+print STDERR "orig sources: " . scalar(@$sources) . "\n" if $debug;
+if ($debug) {
+	foreach $sou (@$sources) {
+		print STDERR " - " . $sou . "\n";
+	}
+}
+
+# prepare cache path
+system("mkdir -p $cache_tmp_path");
+
+# check for valid request
+my $file = $ENV{PATH_INFO};
+return_error(500, 'Server error') if !$file;
+
+# split up request
+return_error(500, 'Server error') if $file !~ m!^(.+)/([^/]*)$!;
+my $dest_path = $1;
+my $filename = $2;
+my $file_type = "";
+my $merge = 0;
+
+print STDERR "file: $file\n" if $debug;
+print STDERR "dest_path: $dest_path\n" if $debug;
+print STDERR "filename: $filename\n" if $debug;
+
+# check if request needs update checking
+my $check_file = 1;
+$check_file = 0 if defined $check_no_updates_files && $filename =~ m/$check_no_updates_files/;
+if (defined $check_updates_only_files) {
+	$check_file = 0;
+	$check_file = 1 if $filename =~ m/$check_updates_only_files/;
+}
+
+# check if request needs merging
+$merge = 1 if $filename =~ m/$merge_files/;
+$check_file = 1 if $merge;
+
+print STDERR "check_file: $check_file\n" if $debug;
+print STDERR "merge: $merge\n" if $debug;
+
+# if the file needs no update checks, check in cache
+return_file($cache_path, $file, $logfile, 'CACHED_NO_CHECK') if (!$check_file && $filename && -R $cache_path . $file);
+
+# get datetime from local file if it exists
+my $timestamp = 0;
+if ($filename && !$check_file && -R $cache_path . $file) {
+	my @sv = lstat($cache_path . $file);
+	$timestamp = $sv[9];
+	print STDERR "timestamp: $timestamp\n" if $debug;
+}
+
+# set up curl with timecheck
+my $curl;
+my $r = 0;
+my $file_sent = 0;
+#my $file_deleted = 0;
+my $file_unmodified = 0;
+my $file_time = -1;
+my $err = 200;
+
+# prepare curl transfer
+my $tmp_file = $cache_tmp_path . "/" . rand() . $$;
+open(FILEHANDLE, ">", $tmp_file) or do {
+	_log($logfile, $file, 500, 'MISS');
+	return_error(500, 'Server error');
+};
+binmode(FILEHANDLE);
+my %curldata = (fh => \*FILEHANDLE, file_sent => \$file_sent, content_type => $file_type, size => -1, merge => \$merge);
+
+print STDERR "sources: " . scalar(@$sources) . "\n" if $debug;
+if ($debug) {
+	foreach $sou (@$sources) {
+		print STDERR " - " . $sou . "\n";
+	}
+}
+
+# filter out duplicate sources (and expand urpmi)
+my @sources;
+my %seen;
+foreach my $s (@$sources) {
+	# heh
+	next if $seen{$s}++;
+	if ($s eq "urpmi") {
+		# urpmi support is required
+		use urpm;
+		use urpm::cfg;
+		my $urpm = new urpm();
+		urpm::get_global_options($urpm);
+		my $config = urpm::cfg::load_config($urpm->{config});
+		my %s;
+		foreach my $media (@{$config->{media}}) {
+			if (!$media->{ignore}) {
+				if ($media->{mirrorlist} && !($seen{'mirrorlist:' . $media->{mirrorlist}}++)) {
+					# push mirrorlists now so they'll be first
+					push @sources, 'mirrorlist://' . $media->{mirrorlist};
+				}
+				elsif ($media->{url} && !($seen{$media->{url}}++)) {
+					$s{$media->{url}} = 1;
+				}
+			}
+		}
+		# push the urls
+		push @sources, keys %s if scalar(keys %s);
+	}
+	else {
+		push @sources, $s;
+	}
+}
+
+# check for source
+print STDERR "interpolated sources: " . scalar(@sources) . "\n" if $debug;
+if ($debug) {
+	foreach $sou (@sources) {
+		print STDERR " - " . $sou . "\n";
+	}
+}
+foreach my $source (@sources) {
+	my ($type, @loc) = split('://', $source);
+	my $loc = join('://', @loc);
+	print STDERR "source of type $type: '" . $source . "'\n" if $debug;
+	if ($type eq 'mirrorlist') {
+		# get exact url from cache and parse
+		my $res = open(FILE, '<', '/var/cache/urpmi/mirrors.cache');
+		if ($res) {
+			my $mirrorcache = '';
+			while (<FILE>) {
+				$mirrorcache .= $_;
+			}
+			close FILE;
+			my $host_loc = $loc;
+			$host_loc =~ s/\$/\\\$/g;
+			if ($mirrorcache =~ m/'$host_loc'\s+=>\s+{[\r\n]+\s+'chosen'\s+=>\s+'([^']+)'/m) {
+				$source = $1;
+				# rectify source to remove '/distrib/version/arch'
+				$source =~ s!/[^/]+/[^/]+/[^/]+$!!;
+				print STDERR "mirrorlist returns source '$source'\n" if $debug;
+				($type, @loc) = split('://', $source);
+				$loc = join('://', @loc);
+				if (defined $type) {
+					print STDERR "mirrorlist returns type $type: '" . $source . "'\n" if $debug;
+				}
+				else {
+					print STDERR "transfer error: mirrorlist is no url '" . $source . "'.\n" if $debug;
+					$type = '';
+				}
+			}
+			else {
+				print STDERR "transfer error: mirrorlist has no chosen url '" . $source . "'.\n" if $debug;
+				$type = '';
+			}
+		}
+		else {
+			print STDERR "transfer error: couldn't open mirrorlist cache.\n" if $debug;
+		}
+	}
+	if ($type eq 'rsync') {
+		# find the equivalent ftp mirror location by hostname
+		my $res = open(FILE, '<', '/var/cache/urpmi/mirrors.cache');
+		if ($res) {
+			my $mirrorcache = '';
+			while (<FILE>) {
+				$mirrorcache .= $_;
+			}
+			close FILE;
+			my $loc_host = $loc;
+			$loc_host =~ s!/.+!!;
+			if ($mirrorcache =~ m!'url'\s+=>\s+'((ftp|http)://$loc_host/[^']+)'!) {
+				$source = $1;
+				# rectify source to remove '/distrib/version/arch'
+				$source =~ s!/[^/]+/[^/]+/[^/]+$!!;
+				print STDERR "rsync switch returns source '$source'\n" if $debug;
+				($type, @loc) = split('://', $source);
+				$loc = join('://', @loc);
+				if (defined $type) {
+					print STDERR "rsync switch returns type $type: '" . $source . "'\n" if $debug;
+				}
+				else {
+					print STDERR "transfer error: rsync switch is no url '" . $source . "'.\n" if $debug;
+					$type = '';
+				}
+			}
+			else {
+				print STDERR "transfer error: rsync switch has no suitable url '" . $source . "'.\n" if $debug;
+				$type = '';
+			}
+		}
+		else {
+			print STDERR "transfer error: couldn't open mirrorlist cache.\n" if $debug;
+		}
+	}
+	if ($type eq 'file') {
+		if ($filename && -R $loc . $file) {
+			my $ft = `file -b --mime-type $loc$file`;
+			$ft =~ s/[\s\r\n]*$//;
+			print STDERR "mimetype: '$ft'\n" if $debug;
+			print STDERR "size: " . (-s $loc . $file) . "\n" if $debug;
+			$r = open(FILE, "<", $loc . $file);
+			if ($r) {
+				print STDERR "file fetch url '" . $loc . $file . "'\n" if $debug;
+				if (!$file_sent) {
+					$file_sent = 1;
+					print "Content-Type: " . $ft . "\r\n";
+					print "Content-Length: " . (-s $loc . $file) . "\r\n" if !$merge;
+					print "\r\n";
+				}
+				binmode(FILE);
+				my $buf;
+				while (read(FILE, $buf, 1024)) {
+					print FILEHANDLE $buf;
+					print $buf;
+				}
+				close FILE;
+				$r = 0;
+			}
+			else {
+				print STDERR "transfer error: couldn't open file '" . $loc . $file . "'.\n" if $debug;
+				$r = 1;
+				$err = 404;
+			}
+		}
+		else {
+			print STDERR "transfer error: couldn't read file '" . $loc . $file . "'.\n" if $debug;
+		}
+	}
+	elsif ($type) {
+		if (!defined $curl) {
+			use WWW::Curl::Easy;
+			# set up curl stuff
+			$curl = new WWW::Curl::Easy;
+			if ($timestamp > 0) {
+				$curl->setopt(CURLOPT_TIMECONDITION, 1); # CURL_TIMECOND_IFMODSINCE
+				$curl->setopt(CURLOPT_TIMEVALUE, $timestamp);
+			}
+			$curl->setopt(CURLOPT_CONNECTTIMEOUT, $connect_timeout);
+			$curl->setopt(CURLOPT_FTP_RESPONSE_TIMEOUT, $ftp_response_timeout);
+			$curl->setopt(CURLOPT_LOW_SPEED_LIMIT, $max_stall_speed);
+			$curl->setopt(CURLOPT_LOW_SPEED_TIME, $max_stall_time);
+			$curl->setopt(CURLOPT_FOLLOWLOCATION, 1);
+			$curl->setopt(CURLOPT_FILETIME, 1);
+			# hook curl transfer functions for local caching
+			$curl->setopt(CURLOPT_WRITEDATA, \%curldata);
+			$curl->setopt(CURLOPT_WRITEFUNCTION, \&write_function);
+			$curl->setopt(CURLOPT_WRITEHEADER, \%curldata);
+			$curl->setopt(CURLOPT_HEADERFUNCTION, \&header_function);
+		}
+		# depending on type check if remote file is newer
+		print STDERR "curl fetch url '" . $source . $file . "'\n" if $debug;
+		$curl->setopt(CURLOPT_URL, $source . $file);
+		$r = $curl->perform;
+		print STDERR "curl return value: " . $err . "\n" if $debug;
+		# use curl to get it and output it directly
+		if ($r == 0) {
+			$err = $curl->getinfo(CURLINFO_HTTP_CODE);
+			if ($err =~ m/^2/ || $err == 304) {
+				if ($curl->getinfo(CURLINFO_CONDITION_UNMET)) {
+					$file_unmodified = 1;
+				}
+				$file_time = $curl->getinfo(CURLINFO_FILETIME);
+			}
+			else {
+				# error stuff ?
+				print STDERR "transfer error: http code " . $err . "\n" if $debug;
+			}
+		}
+		else {
+			# error stuff ?
+			print STDERR "transfer error: " . $curl->strerror($r) . " ($r)\n" if $debug;
+		}
+	}
+	else {
+		print STDERR "transfer error: this source does not have a type\n" if $debug;
+	}
+	last if $file_sent && !$merge;
+}
+
+my $extra = '';
+
+close(FILEHANDLE);
+
+if ($file_sent && $r == 0 && $err =~ m/^2/ && $filename) {
+	# clean up file and move to correct location
+	if (system("mkdir -p $cache_path$dest_path") == 0) {
+		if (rename($tmp_file, $cache_path . $file)) {
+			utime(time(), $file_time, $cache_path . $file) if $file_time > 0;
+		}
+		else {
+			print STDERR "WARNING: file '$tmp_file' could not be moved to '$cache_path$file'\n";
+		}
+	}
+	else {
+		print STDERR "WARNING: containing path for '$cache_path$file' could not be created\n";
+	}
+	_log($logfile, $file, 200, 'MISS');
+}
+else {
+	unlink($tmp_file);
+	if ($file_sent) {
+		if ($filename) {
+			_log($logfile, $file, $err, 'MISS_FAIL_SENT');
+		}
+		else {
+			# It was actually successful, but paths can't be saved...
+			print STDERR "NOTICE: paths cant be saved: '$file'\n" if $debug;
+			_log($logfile, $file, $err, 'MISS');
+		}
+		exit 0;
+	}
+	$extra = '_UNMODIFIED' if $file_unmodified;
+	return_file($cache_path, $file, $logfile, 'HIT_AFTER_FAIL' . $extra) if $filename && -R $cache_path . $file;
+	_log($logfile, $file, 404, 'MISS_FAIL');
+	return_error(404, 'File not found');
+}
+
+print STDERR "finished." if $debug;
+
+exit 0;
+
+sub header_function {
+	my ($ptr, $data) = @_;
+	if (!${$data->{file_sent}}) {
+		$data->{http_header} = $1 if $ptr =~ m!^HTTP/[0-9.]+\s+(.+?)[\s\r\n]*$!;
+		$data->{content_type} = $1 if $ptr =~ m/^Content-[tT]ype:\s+(.+?)[\s\r\n]*$/;
+		$data->{size} = $1 if $ptr =~ m/^Content-[lL]ength:\s+(.+?)[\s\r\n]*$/;
+		$data->{size} = $1 if $ptr =~ m/^213\s+(.+?)[\s\r\n]*$/;
+	}
+	return length($ptr);
+}
+
+sub write_function {
+	my ($ptr, $data) = @_;
+	my $f = ${$data->{fh}};
+	print $f ($ptr);
+	if (!${$data->{file_sent}}) {
+		${$data->{file_sent}} = 1;
+		print STDERR "HTTP header: " . $data->{http_header} . "\n" if $debug && defined $data->{http_header};
+		print STDERR "Content-Type: " . $data->{content_type} . "\n" if $debug && defined $data->{content_type};
+		print STDERR "Content-Length: " . $data->{size} . "\n" if $debug;
+		print "Status: " . $data->{http_header} . "\r\n" if $data->{http_header} && $data->{http_header} !~ m/^2/;
+		print "Content-Type: " . $data->{content_type} . "\r\n" if $data->{content_type};
+		print "Content-Length: " . $data->{size} . "\r\n" if $data->{size} > -1 && !${$data->{merge}};
+		print "\r\n";
+	}
+	print $ptr;
+	return length($ptr);
+}
+
+sub _log {
+	my ($logfile, $file, $code, $cached) = @_;
+	my $date = `date`;
+	$date =~ s/[\s\r\n]*$//;
+	open(FILE, ">>" . $logfile) or return;
+	print FILE "[" . $date . "] $file - $code - $cached\n";
+	close(FILE);
+}
+
+sub return_file {
+	my ($cache_path, $file, $logfile, $cached)=@_;
+	open(FILE, "<", $cache_path . $file) or do {
+		_log($logfile, $file, 500, $cached);
+		return_error(500, 'Server error');
+	};
+	my $ft = `file -b --mime-type $cache_path$file`;
+	$ft =~ s/[\s\r\n]*$//;
+	print STDERR "mimetype: '$ft'\n" if $debug;
+	print STDERR "size: " . (-s $cache_path . $file) . "\n" if $debug;
+	print "Content-Type: " . $ft . "\r\n";
+	print "Content-Length: " . (-s $cache_path . $file) . "\r\n\r\n";
+	binmode(FILE);
+	my $buf;
+	while (read(FILE, $buf, 1024)) {
+		print $buf;
+	}
+	close FILE;
+	_log($logfile, $file, 200, $cached);
+	exit 0;
+}
+
+sub return_error {
+	my ($code, $text) = @_;
+	print "Status: $code $text\r\n\r\n";
+	print STDERR "$code $text.\n" if $debug;
+	exit 0;
+}
-- 
cgit v1.2.1