| 1 |
#!/usr/bin/perl -w |
| 2 |
## written by Maarten Vanraes (c) 2009-2012 |
| 3 |
## urpmi-proxy is GPLv2+ |
| 4 |
|
| 5 |
use strict; |
| 6 |
use warnings; |
| 7 |
|
| 8 |
my $debug = 0; |
| 9 |
my $proxy = 0; |
| 10 |
my $config_file = '/etc/urpmi-proxy.conf'; |
| 11 |
|
| 12 |
# config defaults |
| 13 |
my $cache_tmp_path = '/var/tmp/urpmi-proxy'; |
| 14 |
my $cache_path = '/var/cache/urpmi-proxy'; |
| 15 |
my $logfile = '/var/log/urpmi-proxy.log'; |
| 16 |
my $check_updates_only_files = '(MD5SUM|descriptions)'; |
| 17 |
my $check_no_updates_files; |
| 18 |
my $merge_files = 'media.cfg'; |
| 19 |
my $sources = [ |
| 20 |
'urpmi' |
| 21 |
]; |
| 22 |
my $connect_timeout = 120; |
| 23 |
my $ftp_response_timeout = 30; |
| 24 |
my $max_stall_speed = 8192; |
| 25 |
my $max_stall_time = 60; |
| 26 |
|
| 27 |
# load config file |
| 28 |
if (-R $config_file) { |
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my $r = open(FILE, '<', $config_file); |
| 30 |
if ($r) { |
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my $l = ''; |
| 32 |
while (my $i = <FILE>) { |
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$l .= $i; |
| 34 |
} |
| 35 |
eval $l; |
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close FILE; |
| 37 |
} |
| 38 |
} |
| 39 |
print STDERR "logfile: $logfile\n" if $debug; |
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|
| 41 |
print STDERR "orig sources: " . scalar(@$sources) . "\n" if $debug; |
| 42 |
if ($debug) { |
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foreach my $sou (@$sources) { |
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print STDERR " - " . $sou . "\n"; |
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} |
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} |
| 47 |
|
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# prepare cache path |
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system("mkdir -p $cache_tmp_path"); |
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|
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# check for valid request |
| 52 |
my $file = $ENV{PATH_INFO}; |
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return_error(500, 'Server error') if !$file; |
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|
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# split up request |
| 56 |
return_error(500, 'Server error') if $file !~ m!^(.*)/([^/]*)$!; |
| 57 |
my $dest_path = $1; |
| 58 |
my $filename = $2; |
| 59 |
my $file_type = ""; |
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my $merge = 0; |
| 61 |
|
| 62 |
print STDERR "file: $file\n" if $debug; |
| 63 |
print STDERR "dest_path: $dest_path\n" if $debug; |
| 64 |
print STDERR "filename: $filename\n" if $debug; |
| 65 |
|
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# check if there's a time condition |
| 67 |
my $modified_since = 0; |
| 68 |
if (defined $ENV{HTTP_IF_MODIFIED_SINCE}) { |
| 69 |
$modified_since = `date --date="$ENV{HTTP_IF_MODIFIED_SINCE}" "+%s"` if defined $ENV{HTTP_IF_MODIFIED_SINCE}; |
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$modified_since =~ s/[\s\r\n]*$//; |
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print STDERR "is modified since: $ENV{HTTP_IF_MODIFIED_SINCE} ($modified_since) ?\n" if $debug && $modified_since; |
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} |
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|
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# set request ENV vars |
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my $ip = $ENV{REMOTE_ADDR}; |
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my $user_agent = ''; |
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$user_agent = $ENV{HTTP_USER_AGENT} if defined $ENV{HTTP_USER_AGENT}; |
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|
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# check if request needs update checking |
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my $check_file = 1; |
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$check_file = 0 if defined $check_no_updates_files && $filename =~ m/$check_no_updates_files/; |
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if (defined $check_updates_only_files) { |
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$check_file = 0; |
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$check_file = 1 if $filename =~ m/$check_updates_only_files/; |
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} |
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|
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# check if request needs merging |
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$merge = 1 if $filename =~ m/$merge_files/; |
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$check_file = 1 if $merge; |
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|
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print STDERR "check_file: $check_file\n" if $debug; |
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print STDERR "merge: $merge\n" if $debug; |
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|
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# get datetime from local file if it exists |
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my @stat = lstat($cache_path . $file); |
| 96 |
if ($filename && scalar(@stat) > 0) { |
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print STDERR "timestamp: $stat[9]\n" if $debug; |
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# if the file needs no update checks, check in cache |
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return_file($cache_path, $file, $logfile, 'HIT_NO_CHECK', \@stat, $ip, $user_agent) if !$check_file; |
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} |
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|
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# set up curl with timecheck |
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my $curl; |
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my $r = 0; |
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my $file_sent = 0; |
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my $file_unmodified = 0; |
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my $file_time = -1; |
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my $err = 200; |
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|
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# prepare curl transfer |
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my $tmp_file = $cache_tmp_path . "/" . rand() . $$; |
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open(FILEHANDLE, ">", $tmp_file) or do { |
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_log($logfile, $file, 500, 'MISS', -1, $ip, $user_agent); |
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return_error(500, 'Server error'); |
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}; |
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binmode(FILEHANDLE); |
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my %curldata = (fh => \*FILEHANDLE, file_sent => \$file_sent, content_type => $file_type, size => -1, merge => \$merge); |
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|
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print STDERR "sources: " . scalar(@$sources) . "\n" if $debug; |
| 120 |
if ($debug) { |
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foreach my $sou (@$sources) { |
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print STDERR " - " . $sou . "\n"; |
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} |
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} |
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|
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# filter out duplicate sources (and expand urpmi) |
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my @sources; |
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my %seen; |
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foreach my $s (@$sources) { |
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# heh |
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next if $seen{$s}++; |
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if ($s eq "urpmi") { |
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# urpmi support is required |
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use urpm; |
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use urpm::cfg; |
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my $urpm = new urpm(); |
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urpm::get_global_options($urpm); |
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my $config = urpm::cfg::load_config($urpm->{config}); |
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my %s; |
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foreach my $media (@{$config->{media}}) { |
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if (!$media->{ignore}) { |
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if ($media->{mirrorlist} && !($seen{'mirrorlist:' . $media->{mirrorlist}}++)) { |
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# push mirrorlists now so they'll be first |
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push @sources, 'mirrorlist://' . $media->{mirrorlist}; |
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} |
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elsif ($media->{url} && !($seen{$media->{url}}++)) { |
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$s{$media->{url}} = 1; |
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} |
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} |
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} |
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# push the urls |
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push @sources, keys %s if scalar(keys %s); |
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} |
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else { |
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push @sources, $s; |
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} |
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} |
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|
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# check for source |
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print STDERR "interpolated sources: " . scalar(@sources) . "\n" if $debug; |
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if ($debug) { |
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foreach my $sou (@sources) { |
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print STDERR " - " . $sou . "\n"; |
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} |
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} |
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foreach my $source (@sources) { |
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my ($type, @loc) = split('://', $source); |
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my $loc = join('://', @loc); |
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print STDERR "source of type $type: '" . $source . "'\n" if $debug; |
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if ($type eq 'mirrorlist') { |
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# get exact url from cache and parse |
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my $res = open(FILE, '<', '/var/cache/urpmi/mirrors.cache'); |
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if ($res) { |
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my $mirrorcache = ''; |
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while (my $i = <FILE>) { |
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$mirrorcache .= $i; |
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} |
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close FILE; |
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my $host_loc = $loc; |
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$host_loc =~ s/\$/\\\$/g; |
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if ($mirrorcache =~ m/'$host_loc'\s+=>\s+{[\r\n]+\s+'chosen'\s+=>\s+'([^']+)'/m) { |
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$source = $1; |
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# rectify source to remove '/distrib/version/arch' |
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$source =~ s!/[^/]+/[^/]+/[^/]+$!!; |
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print STDERR "mirrorlist returns source '$source'\n" if $debug; |
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($type, @loc) = split('://', $source); |
| 187 |
$loc = join('://', @loc); |
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if (defined $type) { |
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print STDERR "mirrorlist returns type $type: '" . $source . "'\n" if $debug; |
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} |
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else { |
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print STDERR "transfer error: mirrorlist is no url '" . $source . "'.\n" if $debug; |
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$type = ''; |
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} |
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} |
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else { |
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print STDERR "transfer error: mirrorlist has no chosen url '" . $source . "'.\n" if $debug; |
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$type = ''; |
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} |
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} |
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else { |
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print STDERR "transfer error: couldn't open mirrorlist cache.\n" if $debug; |
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} |
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} |
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if ($type eq 'rsync') { |
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# find the equivalent ftp mirror location by hostname |
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my $res = open(FILE, '<', '/var/cache/urpmi/mirrors.cache'); |
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if ($res) { |
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my $mirrorcache = ''; |
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while (my $i = <FILE>) { |
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$mirrorcache .= $i; |
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} |
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close FILE; |
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my $loc_host = $loc; |
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$loc_host =~ s!/.+!!; |
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if ($mirrorcache =~ m!'url'\s+=>\s+'((ftp|http)://$loc_host/[^']+)'!) { |
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$source = $1; |
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# rectify source to remove '/distrib/version/arch' |
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$source =~ s!/[^/]+/[^/]+/[^/]+$!!; |
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print STDERR "rsync switch returns source '$source'\n" if $debug; |
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($type, @loc) = split('://', $source); |
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$loc = join('://', @loc); |
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if (defined $type) { |
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print STDERR "rsync switch returns type $type: '" . $source . "'\n" if $debug; |
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} |
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else { |
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print STDERR "transfer error: rsync switch is no url '" . $source . "'.\n" if $debug; |
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$type = ''; |
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} |
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} |
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else { |
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print STDERR "transfer error: rsync switch has no suitable url '" . $source . "'.\n" if $debug; |
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$type = ''; |
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} |
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} |
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else { |
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print STDERR "transfer error: couldn't open mirrorlist cache.\n" if $debug; |
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} |
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} |
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if ($type eq 'file') { |
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my @statl = lstat($loc . $file); |
| 242 |
if ($filename && scalar(@statl) > 0) { |
| 243 |
my $ft = `file -b --mime-type $loc$file`; |
| 244 |
$ft =~ s/[\s\r\n]*$//; |
| 245 |
my $t = localtime($statl[9]); |
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print STDERR "HTTP Header: 200 OK\n" if $debug; |
| 247 |
print STDERR "Content-Type: $ft\n" if $debug; |
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print STDERR "Content-Length: " . $statl[7] . "\n" if $debug; |
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print STDERR "Last-Modified: " . $t . "\n" if $debug; |
| 250 |
$r = open(FILE, "<", $loc . $file); |
| 251 |
if ($r) { |
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print STDERR "file fetch url '" . $loc . $file . "'\n" if $debug; |
| 253 |
if (!$file_sent) { |
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$file_sent = $statl[7]; |
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print "Status: 200 OK\r\n"; |
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print "Content-Type: " . $ft . "\r\n"; |
| 257 |
print "Content-Length: " . $statl[7] . "\r\n" if !$merge; |
| 258 |
print "Last-Modified: " . $t . "\r\n"; |
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print "\r\n"; |
| 260 |
} |
| 261 |
else { |
| 262 |
$file_sent += $statl[7]; |
| 263 |
} |
| 264 |
binmode(FILE); |
| 265 |
my $buf; |
| 266 |
while (read(FILE, $buf, 1024)) { |
| 267 |
print FILEHANDLE $buf; |
| 268 |
print $buf; |
| 269 |
} |
| 270 |
close FILE; |
| 271 |
$r = 0; |
| 272 |
} |
| 273 |
else { |
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print STDERR "transfer error: couldn't open file '" . $loc . $file . "'.\n" if $debug; |
| 275 |
$r = 1; |
| 276 |
$err = 404; |
| 277 |
} |
| 278 |
} |
| 279 |
else { |
| 280 |
print STDERR "transfer error: couldn't read file '" . $loc . $file . "'.\n" if $debug; |
| 281 |
} |
| 282 |
} |
| 283 |
elsif ($type) { |
| 284 |
if (!defined $curl) { |
| 285 |
use WWW::Curl::Easy; |
| 286 |
# set up curl stuff |
| 287 |
$curl = new WWW::Curl::Easy; |
| 288 |
if (scalar(@stat) > 0 && $stat[9] > $modified_since) { |
| 289 |
$curl->setopt(CURLOPT_TIMECONDITION, 1); # CURL_TIMECOND_IFMODSINCE |
| 290 |
$curl->setopt(CURLOPT_TIMEVALUE, $stat[9]); |
| 291 |
} |
| 292 |
elsif ($modified_since > 0) { |
| 293 |
$curl->setopt(CURLOPT_TIMECONDITION, 1); # CURL_TIMECOND_IFMODSINCE |
| 294 |
$curl->setopt(CURLOPT_TIMEVALUE, $modified_since); |
| 295 |
} |
| 296 |
$curl->setopt(CURLOPT_USERAGENT, $user_agent) if $user_agent; |
| 297 |
$curl->setopt(CURLOPT_PROXY, $proxy) if $proxy; |
| 298 |
$curl->setopt(CURLOPT_CONNECTTIMEOUT, $connect_timeout); |
| 299 |
$curl->setopt(CURLOPT_FTP_RESPONSE_TIMEOUT, $ftp_response_timeout); |
| 300 |
$curl->setopt(CURLOPT_LOW_SPEED_LIMIT, $max_stall_speed); |
| 301 |
$curl->setopt(CURLOPT_LOW_SPEED_TIME, $max_stall_time); |
| 302 |
$curl->setopt(CURLOPT_FOLLOWLOCATION, 1); |
| 303 |
$curl->setopt(CURLOPT_FILETIME, 1); |
| 304 |
# hook curl transfer functions for local caching |
| 305 |
$curl->setopt(CURLOPT_WRITEDATA, \%curldata); |
| 306 |
$curl->setopt(CURLOPT_WRITEFUNCTION, \&write_function); |
| 307 |
$curl->setopt(CURLOPT_WRITEHEADER, \%curldata); |
| 308 |
$curl->setopt(CURLOPT_HEADERFUNCTION, \&header_function); |
| 309 |
} |
| 310 |
# depending on type check if remote file is newer |
| 311 |
print STDERR "curl fetch url '" . $source . $file . "'\n" if $debug; |
| 312 |
$curl->setopt(CURLOPT_URL, $source . $file); |
| 313 |
$r = $curl->perform; |
| 314 |
print STDERR "curl return value: " . $err . "\n" if $debug; |
| 315 |
# use curl to get it and output it directly |
| 316 |
if ($r == 0) { |
| 317 |
$err = $curl->getinfo(CURLINFO_HTTP_CODE); |
| 318 |
if ($err =~ m/^2/ || $err == 304) { |
| 319 |
if ($curl->getinfo(CURLINFO_CONDITION_UNMET)) { |
| 320 |
$file_unmodified = 1; |
| 321 |
print STDERR "condition unmet\n" if $debug; |
| 322 |
} |
| 323 |
$file_time = $curl->getinfo(CURLINFO_FILETIME); |
| 324 |
} |
| 325 |
else { |
| 326 |
# error stuff ? |
| 327 |
print STDERR "transfer error: http code " . $err . "\n" if $debug; |
| 328 |
} |
| 329 |
} |
| 330 |
else { |
| 331 |
# error stuff ? |
| 332 |
print STDERR "transfer error: " . $curl->strerror($r) . " ($r)\n" if $debug; |
| 333 |
} |
| 334 |
} |
| 335 |
else { |
| 336 |
print STDERR "transfer error: this source does not have a type\n" if $debug; |
| 337 |
} |
| 338 |
print STDERR "file_sent: $file_sent\n" if $debug; |
| 339 |
last if $file_sent && !$merge; |
| 340 |
} |
| 341 |
|
| 342 |
my $extra = ''; |
| 343 |
|
| 344 |
close(FILEHANDLE); |
| 345 |
|
| 346 |
if ($file_sent && $r == 0 && $err =~ m/^2/ && $filename) { |
| 347 |
# clean up file and move to correct location |
| 348 |
if (system("mkdir -p $cache_path$dest_path") == 0) { |
| 349 |
if (rename($tmp_file, $cache_path . $file)) { |
| 350 |
utime(time(), $file_time, $cache_path . $file) if $file_time > 0; |
| 351 |
} |
| 352 |
else { |
| 353 |
print STDERR "WARNING: file '$tmp_file' could not be moved to '$cache_path$file'\n"; |
| 354 |
} |
| 355 |
} |
| 356 |
else { |
| 357 |
print STDERR "WARNING: containing path for '$cache_path$file' could not be created\n"; |
| 358 |
} |
| 359 |
_log($logfile, $file, 200, 'MISS', $file_sent, $ip, $user_agent); |
| 360 |
} |
| 361 |
else { |
| 362 |
unlink($tmp_file); |
| 363 |
if ($file_sent) { |
| 364 |
if ($filename) { |
| 365 |
_log($logfile, $file, $err, 'MISS_FAIL_SENT', $file_sent, $ip, $user_agent); |
| 366 |
} |
| 367 |
else { |
| 368 |
# It was actually successful, but paths can't be saved... |
| 369 |
print STDERR "NOTICE: paths cant be saved: '$file'\n" if $debug; |
| 370 |
_log($logfile, $file, $err, 'MISS', $file_sent, $ip, $user_agent); |
| 371 |
} |
| 372 |
exit 0; |
| 373 |
} |
| 374 |
if ($file_unmodified) { |
| 375 |
$extra = '_UNMODIFIED'; |
| 376 |
if ($modified_since > 0 && (scalar(@stat) == 0 || $stat[9] <= $modified_since)) { |
| 377 |
# it's been requested, so we can answer unmodified |
| 378 |
_log($logfile, $file, 304, 'MISS' . $extra, 0, $ip, $user_agent); |
| 379 |
return_error(304, 'Unmodified'); |
| 380 |
} |
| 381 |
} |
| 382 |
else { |
| 383 |
$extra = 'AFTER_FAIL'; |
| 384 |
} |
| 385 |
return_file($cache_path, $file, $logfile, 'HIT' . $extra, \@stat, $ip, $user_agent) if $filename && scalar(@stat) > 0; |
| 386 |
_log($logfile, $file, 404, 'MISS_FAIL', -1, $ip, $user_agent); |
| 387 |
return_error(404, 'File not found'); |
| 388 |
} |
| 389 |
|
| 390 |
print STDERR "finished." if $debug; |
| 391 |
|
| 392 |
exit 0; |
| 393 |
|
| 394 |
sub header_function { |
| 395 |
my ($ptr, $data) = @_; |
| 396 |
if (!${$data->{file_sent}}) { |
| 397 |
$data->{http_header} = $1 if $ptr =~ m!^HTTP/[0-9.]+\s+(.+?)[\s\r\n]*$!; |
| 398 |
$data->{content_type} = $1 if $ptr =~ m/^Content-[tT]ype:\s+(.+?)[\s\r\n]*$/; |
| 399 |
$data->{size} = $1 if $ptr =~ m/^Content-[lL]ength:\s+(.+?)[\s\r\n]*$/; |
| 400 |
$data->{date} = $1 if $ptr =~ m/^Last-[mM]odified:\s+(.+?)[\s\r\n]*$/; |
| 401 |
$data->{size} = $1 if $ptr =~ m/^213\s+(.+?)[\s\r\n]*$/; |
| 402 |
} |
| 403 |
return length($ptr); |
| 404 |
} |
| 405 |
|
| 406 |
sub write_function { |
| 407 |
my ($ptr, $data) = @_; |
| 408 |
my $f = ${$data->{fh}}; |
| 409 |
print $f ($ptr); |
| 410 |
if (!${$data->{file_sent}}) { |
| 411 |
${$data->{file_sent}} = length($ptr); |
| 412 |
print STDERR "HTTP header: " . $data->{http_header} . "\n" if $debug && defined $data->{http_header}; |
| 413 |
print STDERR "Content-Type: " . $data->{content_type} . "\n" if $debug && defined $data->{content_type}; |
| 414 |
print STDERR "Content-Length: " . $data->{size} . "\n" if $debug; |
| 415 |
print STDERR "Last-Modified: " . $data->{date} . "\n" if $debug && defined $data->{date}; |
| 416 |
print "Status: " . $data->{http_header} . "\r\n" if $data->{http_header} && $data->{http_header} !~ m/^2/; |
| 417 |
print "Content-Type: " . $data->{content_type} . "\r\n" if $data->{content_type}; |
| 418 |
print "Content-Length: " . $data->{size} . "\r\n" if $data->{size} > -1 && !${$data->{merge}}; |
| 419 |
print "Last-Modified: " . $data->{date} . "\r\n" if $data->{date}; |
| 420 |
print "\r\n"; |
| 421 |
} |
| 422 |
else { |
| 423 |
${$data->{file_sent}} += length($ptr); |
| 424 |
} |
| 425 |
print $ptr; |
| 426 |
return length($ptr); |
| 427 |
} |
| 428 |
|
| 429 |
sub _log { |
| 430 |
my ($logfile, $file, $code, $cached, $size, $ip, $user_agent) = @_; |
| 431 |
my $date = `date`; |
| 432 |
$date =~ s/[\s\r\n]*$//; |
| 433 |
$size = '-' if $size < 0; |
| 434 |
open(FILE, ">>" . $logfile) or return; |
| 435 |
print FILE "[" . $date . "] $ip $code $size $cached '$file' '$user_agent'\n"; |
| 436 |
close(FILE); |
| 437 |
} |
| 438 |
|
| 439 |
sub return_file { |
| 440 |
my ($cache_path, $file, $logfile, $cached, $stat, $ip, $user_agent)=@_; |
| 441 |
open(FILE, "<", $cache_path . $file) or do { |
| 442 |
_log($logfile, $file, 500, $cached, -1, $ip, $user_agent); |
| 443 |
return_error(500, 'Server error'); |
| 444 |
}; |
| 445 |
my $ft = `file -b --mime-type $cache_path$file`; |
| 446 |
$ft =~ s/[\s\r\n]*$//; |
| 447 |
my $t = localtime($stat->[9]); |
| 448 |
print STDERR "HTTP header: 200 OK\n" if $debug; |
| 449 |
print STDERR "Content-Type: '$ft'\n" if $debug; |
| 450 |
print STDERR "Content-Length: " . $stat->[7] . "\n" if $debug; |
| 451 |
print STDERR "Last-Modified: " . $t . "\n" if $debug; |
| 452 |
print "Status: 200 OK\r\n"; |
| 453 |
print "Content-Type: " . $ft . "\r\n"; |
| 454 |
print "Content-Length: " . $stat->[7] . "\r\n"; |
| 455 |
print "Last-Modified: " . $t . "\r\n"; |
| 456 |
print "\r\n"; |
| 457 |
binmode(FILE); |
| 458 |
my $buf; |
| 459 |
while (read(FILE, $buf, 1024)) { |
| 460 |
print $buf; |
| 461 |
} |
| 462 |
close FILE; |
| 463 |
_log($logfile, $file, 200, $cached, $stat->[7], $ip, $user_agent); |
| 464 |
exit 0; |
| 465 |
} |
| 466 |
|
| 467 |
sub return_error { |
| 468 |
my ($code, $text) = @_; |
| 469 |
print "Status: $code $text\r\n\r\n"; |
| 470 |
print STDERR "$code $text.\n" if $debug; |
| 471 |
exit 0; |
| 472 |
} |
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