emiya.pl

   1 #! /usr/bin/env perl
   2
   3 use strict;
   4 use warnings;
   5 use utf8;
   6
   7 #sub POE::Kernel::ASSERT_DEFAULT () { 1 }
   8 use POE qw(Component::Client::HTTP);
   9
  10 use HTTP::Request;
  11 use HTML::Entities;
  12 use Encode;
  13 use Digest::MD5 'md5_hex';
  14 use Time::HiRes 'time';
  15
  16 # TODO: allow loading all those variables from a configuration file
  17
  18 # Required for using the script. If you're using this script,
  19 # you already know what these are for and what you should put in here
  20 my $username = "PR";
  21 my $password = "";
  22
  23 # HTTP proxy. Must be in the form 'http://host:port'.
  24 # Port is required even if 80.
  25 # May work for SOCKS proxies by using the 'socks://' protocol, untested.
  26 my $proxy = $ENV{http_proxy};
  27
  28 # FILTERS
  29
  30 # The main purpose of this script.
  31 # Only files that pass any of the allow filters and fail all of the deny filters
  32 # get downloaded.
  33
  34 # These are hashes to arrayrefs. Each key is used to filter a field in the $info
  35 # hashref. Each element of the arrayrefs is treated as a case-sensitive regexp.
  36 # The fields are title, url and category. There are other fields, but they are
  37 # not really filterable through this method. You are welcome to try though.
  38 # Example: title => ['Kara_no_Kyoukai', 'Black Lagoon\[niizk\]']
  39
  40 # Use [0-9A-Fa-f]{8} for CRC32s
  41 # Use \d{2}v?\d? for episode numbers (catches v2s and v3s as well)
  42 # Remember to escape all '.', '[' and ']' on filenames with a '\'.
  43 my %file_allow_filters = ( title => [] );
  44 my %file_deny_filters = ( url => [] );
  45
  46 # HTTP Digest auth hack
  47 my $realm = "DeathWolf's Auto-Torrent Loving Realm";
  48 my $A1 = md5_hex("$username:$realm:$password");
  49 my $A2 = md5_hex("GET:/~DeathWolf/Recent/Latest-Files.html");
  50 my $cnonce = int(time());
  51 my $reqid = 1;
  52
  53 sub make_digest {
  54         my $www_auth = shift;
  55
  56         $www_auth =~ /nonce=\"(.*?)\"/;
  57         my $nonce = $1;
  58
  59         my $header = "Digest username=\"$username\", ";
  60         $header .= "realm=\"$realm\", nonce=\"$nonce\", ";
  61         $header .= "uri=\"/~DeathWolf/Recent/Latest-Files.html\", ";
  62         $header .= "qop=\"auth\", nc=$reqid, cnonce=\"$cnonce\", ";
  63         my $resp_digest = md5_hex("$A1:$nonce:$reqid:$cnonce:auth:$A2");
  64         $header .= "response=\"$resp_digest\"";
  65         return $header;
  66 }
  67
  68 use constant CHUNK_SIZE => 16384;
  69
  70 POE::Component::Client::HTTP->spawn(
  71         Agent     => 'Emiya/0.2',
  72         Alias     => 'ua',
  73         Timeout   => 45,                    # TODO: make it configurable
  74         Streaming => CHUNK_SIZE,
  75         Proxy     => $proxy
  76 );
  77
  78 sub entity_clean {
  79         my $str = decode_utf8(shift);
  80         use bytes; $str =~ s/%([0-9A-Fa-f]{2})/@{[chr(hex($1))]}/g; no bytes;
  81         decode_entities($str);
  82         return $str;
  83 }
  84
  85 ### Windows Unicode support wrappers
  86 if ($^O =~ /MSWin/) {
  87
  88         ### NOTE: ALL file manipulation files defined here *ONLY WORK WITH ABSOLUTE PATHS*
  89
  90         require Win32API::File; Win32API::File->import qw(:FuncW :Func :MOVEFILE_ :GENERIC_ :FILE_  FILE_END :FILE_SHARE_ OPEN_ALWAYS);
  91         require Win32::API; Win32::API->import;
  92
  93         # Enable output of UTF-8 text
  94
  95         my $SetConsoleOutputCP = Win32::API->new('kernel32.dll', 'SetConsoleOutputCP',
  96                                                                                          'I', '') or die "SetConsoleOutputCP: $^E";
  97
  98 #       if ($SetConsoleOutputCP->Call(65001)) {
  99 #               die "Error " . Win32::GetLastError () . " - " . Win32::FormatMessage (Win32::GetLastError ());
 100 #       }
 101
 102         my $GetStdHandle  = Win32::API->new('kernel32.dll', 'GetStdHandle',
 103                                             'I', 'I') or die "GetStdHandle: $^E";
 104         my $WriteConsoleW = Win32::API->new('kernel32.dll', 'WriteConsoleW',
 105                                             'IPIPP', 'I') or die "WriteConsoleW: $^E";
 106
 107         use constant STD_OUTPUT_HANDLE => 0xfffffff5;
 108
 109         my $stdout = $GetStdHandle->Call(STD_OUTPUT_HANDLE);
 110
 111         # Use Win32::API to load needed functions not defined by Win32API::File
 112
 113         use constant ERROR_NO_MORE_FILES  =>  18;
 114         use constant INVALID_HANDLE_VALUE =>  -1;
 115
 116         typedef Win32::API::Struct FILETIME => qw{
 117                 DWORD dwLowDateTime;
 118                 DWORD dwHighDateTime;
 119         }; # 8 bytes
 120
 121         use constant FILE_ATTRIBUTE_READONLY   =>   0x00000001;
 122         use constant FILE_ATTRIBUTE_HIDDEN     =>   0x00000002;
 123         use constant FILE_ATTRIBUTE_SYSTEM     =>   0x00000004;
 124         use constant FILE_ATTRIBUTE_DIRECTORY  =>   0x00000010;
 125         use constant FILE_ATTRIBUTE_ARCHIVE    =>   0x00000020;
 126         use constant FILE_ATTRIBUTE_NORMAL     =>   0x00000080;
 127         use constant FILE_ATTRIBUTE_TEMPORARY  =>   0x00000100;
 128         use constant FILE_ATTRIBUTE_COMPRESSED =>   0x00000800;
 129         use constant MAX_PATH                  =>   260;
 130
 131         typedef Win32::API::Struct WIN32_FIND_DATAW => qw{
 132                 DWORD dwFileAttributes;
 133                 FILETIME ftCreationTime;
 134                 FILETIME ftLastAccessTime;
 135                 FILETIME ftLastWriteTime;
 136                 DWORD nFileSizeHigh;
 137                 DWORD nFileSizeLow;
 138                 DWORD dwReserved0;
 139                 DWORD dwReserved1;
 140                 WCHAR cFileName[520];
 141                 WCHAR cAlternateFileName[28];
 142         }; # 4 + 8 x 3 + 4 x 4 + 520 + 28 = 592 bytes
 143
 144         my $FindFirstFileW = Win32::API->new('kernel32.dll', 'FindFirstFileW',
 145                                              'PS', 'N') or die "FindFirstFile: $^E";
 146         my $FindNextFileW  = Win32::API->new('kernel32.dll', 'FindNextFileW',
 147                                              'NS', 'I') or die "FindNextFile $^E";
 148         my $FindClose      = Win32::API->new('kernel32.dll', 'FindClose',
 149                                               'N', 'I') or die "FileClose $^E";
 150
 151         typedef Win32::API::Struct SHFILEOPSTRUCT => qw{
 152                 HWND hwnd;
 153                 UINT wFunc;
 154                 LPCWSTR pFrom;
 155                 LPCWSTR pTo;
 156                 WORD fFlags;
 157                 BOOL fAnyOperationsAborted;
 158                 LPVOID hNameMappings;
 159                 LPCTSTR lpszProgressTitle;
 160         };
 161
 162         my $SHFileOperationW = Win32::API->new('shell32.dll', 'SHFileOperationW',
 163                                                                                    'S', 'I') or die "SHFileOperation: $^E";
 164
 165         my $CreateDirectoryW = Win32::API->new('kernel32.dll',
 166                 'BOOL CreateDirectoryW(LPCWSTR lpPathName, LPVOID lpSecurityAttributes);') or die "CreateDirectoryW: $^E";
 167
 168         my $RemoveDirectoryW = Win32::API->new('kernel32.dll',
 169                 'BOOL RemoveDirectoryW(LPCWSTR lpPathName);') or die "RemoveDirectoryW: $^E";
 170
 171         my $enc = sub {
 172                 my $str = shift;
 173                 return encode("UTF-16LE", decode_utf8("$str\0"));
 174         };
 175
 176         *myprint = sub {
 177                 my $str = shift;
 178                 $str = $enc->($str);
 179                 my $count = 0;
 180                 return $count if $WriteConsoleW->Call($stdout, $str, (bytes::length($str)-1)/2, $count, []);
 181                 return 0;
 182         };
 183
 184         *mymkpath = sub {
 185                 my $path = shift;
 186                 my $p = $path;
 187                 $p =~ s/\//\\/g;
 188                 unless (myexists($path)) {
 189                         $! = 0;
 190                         unless ($CreateDirectoryW->Call($enc->("$p"), undef)) {
 191                                 my $parent = $path;
 192                                 $parent =~ s/\/[^\/]*$//;
 193                                 if ($parent eq $path) {
 194                                         return undef;
 195                                 }
 196                                 unless (mymkpath($parent)) {
 197                                         return undef;
 198                                 }
 199                                 # Parent made, try again making the child
 200                                 unless ($CreateDirectoryW->Call($enc->("$p"), undef)) {
 201                                         return undef;
 202                                 }
 203                         }
 204                 }
 205                 return $path;
 206         };
 207
 208         *myexists = sub {
 209                 my $p = shift;
 210                 $p =~ s/\//\\/g;
 211                 return GetFileAttributesW($enc->("$p")) != fileConstant("INVALID_FILE_ATTRIBUTES");
 212         };
 213
 214         *mysize = sub {
 215                 my $p = shift;
 216                 return 0 unless myexists($p);
 217                 $p =~ s/\//\\/g;
 218                 my $handle = CreateFileW($enc->("$p"), 0, fileConstant("FILE_SHARE_READ") |
 219                                                                  fileConstant("FILE_SHARE_WRITE"), [],
 220                                                                  fileConstant("OPEN_EXISTING"), 0, []);
 221                 my $size = getFileSize($handle);
 222                 CloseHandle($handle);
 223                 return $size;
 224         };
 225
 226         *myopen = sub {
 227                 my $mode = shift;
 228                 my $file = shift;
 229                 $file =~ s/\//\\/g;
 230                 $file = $enc->("$file");
 231                 if ($mode eq '<') {
 232                         die "Not implemented";
 233                 }
 234                 my $handle = CreateFileW($file, $mode eq '>>' ? FILE_APPEND_DATA() : GENERIC_WRITE(), FILE_SHARE_READ(), [], OPEN_ALWAYS(), 0, []);
 235                 setFilePointer($handle, 0, FILE_END());
 236                 return $handle;
 237         };
 238
 239         *mysyswrite = sub {
 240                 my $handle = shift;
 241                 my $data = shift;
 242                 my $outbytes;
 243                 return WriteFile($handle, $data, 0, $outbytes, []) ? $outbytes : undef;
 244         };
 245
 246         *myclose = sub {
 247                 CloseHandle(shift);
 248         };
 249
 250         *myunlink = sub {
 251                 DeleteFileW($enc->(shift));
 252         }
 253
 254 } else {
 255         $|++;
 256         *myprint = sub { print shift; };
 257         *mymkpath = sub { mkpath(shift); };
 258         *myexists = sub { -e shift; };
 259         *mysize = sub { -s shift; };
 260         *myopen = sub { open ($_, shift, shift); };
 261         *mysyswrite = sub { syswrite(shift, shift); };
 262         *myclose = sub { close(shift); };
 263         *myunlink = sub { unlink(shift); };
 264 }
 265
 266 POE::Session->create(
 267         inline_states => {
 268                 # Makes initial request for the Digest authentication
 269                 _start => sub {
 270                         my ($kernel, $heap) = @_[KERNEL, HEAP];
 271                         my $req = HTTP::Request->new(GET => 'http://saber.kawaii-shoujo.net/~DeathWolf/Recent/Latest-Files.html');
 272                         $heap->{progress_message} = "Requesting List...";
 273                         myprint ($heap->{progress_message} . " ");
 274                         $kernel->post('ua', 'request', 'authenticate', $req, 0);
 275                 },
 276                 _stop => sub {
 277                         $_[KERNEL]->post('ua', 'shutdown');
 278                 },
 279                 # Authenticates and theen actually fetch the list
 280                 authenticate => sub {
 281                         my $res = $_[ARG1]->[0];
 282                         return if defined $_[ARG1]->[1]; # Wait until the error page finishes downloading because of streaming
 283                         my $req = HTTP::Request->new(GET => 'http://saber.kawaii-shoujo.net/~DeathWolf/Recent/Latest-Files.html');
 284                         die $res->status_line unless ($res->status_line =~ /^(401|2)/);
 285                         unless ($res->is_success) {
 286                                 my $header = make_digest($res->header('WWW-Authenticate'));
 287                                 $req->header('Authorization', $header);
 288                         }
 289                         $_[KERNEL]->post('ua', 'request', 'stream_latest_files', $req, $reqid++, 'progress');
 290                 },
 291                 progress => sub {
 292                         my $msg = $_[HEAP]->{progress_message};
 293                         my ($done, $left) = @{$_[ARG1]}[0,1];
 294                         myprint (sprintf("%3.2f%%\r$msg ", $done * 100 / $left));
 295                         myprint ("\n") if $done == $left;
 296                 },
 297                 # Puts the HTML in a temporary var
 298                 stream_latest_files => sub {
 299                         my ($heap, $res, $data) = ($_[HEAP], @{$_[ARG1]});
 300
 301                         die $res->status_line unless ($res->is_success);
 302
 303                         if (defined $data) {
 304                                 $heap->{latest_files_data} = "" unless exists $heap->{latest_files_data};
 305                                 $heap->{latest_files_data} .= $data;
 306                         } else {
 307                                 $_[KERNEL]->call($_[SESSION], 'parse_latest_files');
 308                                 $_[KERNEL]->yield('load_completed_files');
 309                                 $_[KERNEL]->yield('filter_files');
 310                         }
 311                 },
 312                 # Parses the HTML, puts hashrefs in $_[HEAP]->{latest_files}
 313                 parse_latest_files => sub {
 314                         my $heap = $_[HEAP];
 315
 316                         my $content = $heap->{latest_files_data};
 317                         delete $heap->{latest_files_data};
 318                         my @files = ();
 319                         my $info = {};
 320
 321                         # TODO: use a XML parser, saber now uses XHTML 1.0
 322                         my @lines = split m/\n/, $content;
 323
 324                         foreach (@lines) {
 325                                 if(m/^\s*(<td.*)/) {
 326                                         $_ = $1;
 327                                         if (m!class="date".*?>(.+)</td>!) {
 328                                                 $info->{date} = $1;
 329                                         } elsif (m!class="category".*?>(.+)</td>!) {
 330                                                 $info->{category} = $1;
 331                                         } elsif (m!class="size".*?>(.+)</td>!) {
 332                                                 $info->{size} = $1;
 333                                         } elsif (m!<td><a href="(.+)">(.+)</a></td>!) {
 334                                                 $info->{url} = $1;
 335                                                 $info->{title} = entity_clean($2);
 336                                         }
 337                                 } elsif (m!^\s*</tr>! and $info->{url}) {
 338                                         push @files, $info;
 339                                         $info = {};
 340                                 }
 341                         }
 342
 343                         $heap->{latest_files} = \@files;
 344                 },
 345                 # Loads the list of completed files
 346                 load_completed_files => sub {
 347                         my $heap = $_[HEAP];
 348                         $heap->{completed_files} = [];
 349                         if (myexists("completed_files.txt")) {
 350                                 open my $in, "<", "completed_files.txt";
 351                                 foreach (<$in>) {
 352                                         chomp;
 353                                         push @{$heap->{completed_files}}, decode_utf8($_);
 354                                 }
 355                                 close $in;
 356                         }
 357                 },
 358                 mark_as_completed => sub {
 359                         open my $completed_files, ">>", "completed_files.txt";
 360                         print $completed_files encode_utf8($_[ARG0] . "\n");
 361                         close $completed_files;
 362                 },
 363                 # Filters the file list
 364                 filter_files => sub {
 365                         # TODO: allow filtering by batch contents (subfolders)
 366                         # TODO: allow filtering by min / max filesize
 367                         my $heap = $_[HEAP];
 368                         $heap->{allowed_files} = [];
 369                         my $skip;
 370                         my $filecount = scalar(@{$heap->{latest_files}});
 371                         my $i = 1;
 372                         foreach my $info (@{$heap->{latest_files}}) {
 373                                 myprint("\rFiltering " . $i++ . "/$filecount... ");
 374                                 $skip = 0;
 375                                 foreach (@{$heap->{completed_files}}) {
 376                                         if ($info->{title} eq $_) {
 377                                                 $skip = 1;
 378                                                 last;
 379                                         }
 380                                 }
 381                                 next if $skip;
 382                                 my $allowed = 0;
 383                                 foreach my $group (keys %file_allow_filters) {
 384                                         foreach my $filter (@{$file_allow_filters{$group}}) {
 385                                                 if (entity_clean($info->{$group}) =~ /$filter/) {
 386                                                         $allowed = 1;
 387                                                         last;
 388                                                 }
 389                                         }
 390                                         last if $allowed;
 391                                 }
 392
 393                                 foreach my $group (keys %file_deny_filters) {
 394                                         foreach my $filter (@{$file_deny_filters{$group}}) {
 395                                                 if (entity_clean($info->{$group}) =~ /$filter/) {
 396                                                         $allowed = 0;
 397                                                         last;
 398                                                 }
 399                                         }
 400                                         last unless $allowed;
 401                                 }
 402
 403                                 push @{$heap->{allowed_files}}, $info if $allowed;
 404                         }
 405                         delete $heap->{latest_files};
 406                         $_[KERNEL]->yield('sort_allowed_files');
 407                         $_[KERNEL]->yield('print_allowed_files');
 408                         $_[KERNEL]->yield('download_entries');
 409                 },
 410                 sort_allowed_files => sub {
 411                         # TODO: actually sort them
 412                         # NOTE: the list is used in reverse order
 413                 },
 414                 print_allowed_files => sub {
 415                         my $heap = $_[HEAP];
 416                         my $a = @{$heap->{allowed_files}} > 0 ? ":" : ".";
 417                         myprint (@{$heap->{allowed_files}} . " entries accepted$a\n");
 418                         foreach (@{$heap->{allowed_files}}) {
 419                                 myprint ("  \"" . $_->{title} . ($_->{url} =~ m!/$! ? "/" : "") . "\" (" . $_->{size} . ")\n");
 420                         }
 421                 },
 422                 # This state is called after each file finishes downloading
 423                 download_entries => sub {
 424                         my ($kernel, $session, $heap) = @_[KERNEL, SESSION, HEAP];
 425                         my $info = pop @{$heap->{allowed_files}};
 426                         if ($info) {
 427                                 if ($info->{url} =~ /\/$/) {
 428                                         $kernel->call($session, 'start_download_recursive', $info);
 429                                 } else {
 430                                         $kernel->call($session, 'download_file', $info);
 431                                 }
 432                         }
 433                 },
 434                 # Downloads folder listings
 435                 start_download_recursive => sub {
 436                         # TODO: write the folder name to completed_files.txt after getting all files
 437                         # and skip if the folder name is found
 438                         my $info = $_[ARG0];
 439
 440                         my $req = HTTP::Request->new(GET => $info->{url});
 441                         $_[HEAP]->{info} = $info;
 442                         $_[HEAP]->{progress_message} = "Listing \"". $info->{title} ."/\":";
 443                         $_[KERNEL]->call('ua', 'request', 'stream_subfolder', $req, $reqid++, 'progress');
 444                         while (defined $_[HEAP]->{info}) { $_[KERNEL]->run_one_timeslice(); }
 445                         $_[KERNEL]->yield('download_entries');
 446                 },
 447                 stream_subfolder => sub {
 448                         my ($heap, $res, $data) = ($_[HEAP], @{$_[ARG1]});
 449                         my $info = $heap->{info};
 450
 451                         die $res->status_line unless ($res->is_success);
 452
 453                         # HACK: I dunno why I use md5_hex, but it looked like a good idea at the time
 454                         if (defined $data) {
 455                                 $heap->{"folder-" . md5_hex($info->{title})} = "" unless exists $heap->{"folder-" . md5_hex($info->{title})};
 456                                 $heap->{"folder-" . md5_hex($info->{title})} .= $data;
 457                         } else {
 458                                 $_[KERNEL]->yield('download_recursive');
 459                         }
 460                 },
 461                 # Parses folder listings, pushes subitems to allowed_files, folders last
 462                 # This makes subfolders be checked before files
 463                 download_recursive => sub {
 464                         my ($heap) = $_[HEAP];
 465
 466                         my $info = $heap->{info};
 467                         my @lines = split m/\n/, $heap->{"folder-" . md5_hex($info->{title})};
 468                         my @files = ();
 469                         my @folders = ();
 470                         foreach (@lines) {
 471                                 if (m!<td class="n"><a href="(.*?)">.*<td class="t">Directory</td>!) {
 472                                         next if $1 eq "../";
 473                                         push @folders, $1;
 474                                 } elsif (m!<td class="n"><a href=".*?">(.*?)</a></td>.*<td class="s">(.*?)</td>!) {
 475                                         push @files, [$1, $2];
 476                                 }
 477                         }
 478
 479                         while ($_ = pop @files) {
 480                                 my $finfo = {%{$info}};
 481                                 $finfo->{title}    = $info->{title};
 482                                 $finfo->{title}   .= '/' unless $finfo->{title} =~ m!/$!;
 483                                 $finfo->{title}   .= entity_clean($_->[0]);
 484                                 $finfo->{url}      = $info->{url} . $_->[0],
 485                                 $finfo->{size}     = $_->[1];
 486
 487                                 my $skip = 0;
 488                                 foreach (@{$heap->{completed_files}}) {
 489                                         if ($finfo->{title} eq $_) {
 490                                                 $skip = 1;
 491                                                 last;
 492                                         }
 493                                 }
 494                                 push @{$heap->{allowed_files}}, $finfo unless $skip;
 495                         }
 496                         # There is no trailing slash on the title
 497                         # There IS a trailing slash on folder URLs
 498                         foreach (@folders) {
 499                                 my $subinfo = {%{$info}}; # make a copy
 500                                 $subinfo->{title}  = $info->{title};
 501                                 $subinfo->{title} .= '/' unless $subinfo->{title} =~ m!/$!;
 502                                 $subinfo->{title} .= entity_clean($_);
 503                                 $subinfo->{title} .= '/' unless $subinfo->{title} =~ m!/$!;
 504                                 $subinfo->{url}    = $info->{url} . $_;
 505
 506                                 my $skip = 0;
 507                                 foreach (@{$heap->{completed_files}}) {
 508                                         if ($subinfo->{title} eq $_) {
 509                                                 $skip = 1;
 510                                                 last;
 511                                         }
 512                                 }
 513                                 push @{$heap->{allowed_files}}, $subinfo unless $skip;
 514                         }
 515
 516                         delete $heap->{"folder-" . md5_hex($info->{title})};
 517                         $heap->{info} = undef;
 518                         delete $heap->{info};
 519                 },
 520                 # Actually downloads files
 521                 download_file => sub {
 522                         my ($kernel, $heap, $info) = @_[KERNEL, HEAP, ARG0];
 523
 524                         my $req = HTTP::Request->new(GET => $info->{url});
 525                         $req->header (Accept_Ranges => "bytes");
 526                         $heap->{have_size} = mysize($info->{title});
 527                         if ($heap->{have_size}) {
 528                                 $req->header (Range => "bytes=". $heap->{have_size} ."-");
 529                         } else {
 530                                 $heap->{have_size} = 0;
 531                         }
 532                         my $title = $info->{title};
 533                         my $len = 123; # Length of the string on-screen (imprecise, don't know how to actually make it correct)
 534                         # TODO: make $len customizable and/or somehow detect from the terminal the optimal length
 535
 536                         # Shorten the printed title to $len characters
 537                         if (length($title) > $len) {
 538                                 my @paths = split('/', $title);
 539                                 $title = "";
 540
 541                                 # Keep the main folder name intact if it isn't too long
 542                                 if (length($paths[0]) < $len/2) {
 543                                         $title .= shift(@paths) . "/";
 544                                         $len -= length($title);
 545                                 }
 546                                 my $pathcount = @paths;
 547                                 my $prelen = int($len/$pathcount/2) - 2;
 548                                 my $postlen = $prelen + 1;
 549                                 while ($_=(shift @paths)) {
 550                                         if (length($_) <= $len/$pathcount) {
 551                                                 $title .= "$_/";
 552                                         } else {
 553                                                 $title .= substr($_, 0, $prelen) . "..." . substr($_, -$postlen) . "/";
 554                                         }
 555                                 }
 556                         }
 557                         # Remove any trailing / (will have if the title shortening code runs)
 558                         $title =~ s!/$!!;
 559                         $heap->{progress_message} = "\"" . $title ."\" (". $info->{size} ."):";
 560                         myprint($heap->{progress_message});
 561
 562                         $heap->{filename} = $info->{title};
 563
 564                         $heap->{last_time} = time;
 565                         $heap->{start_time} = time;
 566                         $heap->{len} = 0;
 567                         $heap->{oct} = 0;
 568                         $_[KERNEL]->delay('calculate_speed' => 2);
 569                         $_[KERNEL]->call('ua', 'request', 'stream_file', $req, $reqid++, 'file_progress');
 570                 },
 571                 # Does the actual file downloading
 572                 stream_file => sub {
 573                         my ($kernel, $heap, $req, $res, $data) =
 574                                         (@_[KERNEL, HEAP, ARG0], @{$_[ARG1]});
 575
 576                         die $res->status_line unless $res->is_success or $res->status_line =~ /^416/;
 577
 578                         if (defined($data)) {
 579                                 unless ($heap->{outfh} and $heap->{content_length}) {
 580                                         $heap->{filename} =~ m!(.*)/!;
 581                                         mymkpath($1) if $1;
 582                                         $heap->{outfh} = myopen('>>',$heap->{filename});
 583                                         $heap->{content_length} = $res->header('Content-Length');
 584                                         # This is probably wrong
 585                                         if ($heap->{content_length} == $heap->{have_size}) {
 586                                                 myclose($heap->{outfh});
 587                                                 $kernel->call($_[SESSION], 'mark_as_completed', $heap->{filename});
 588                                                 $kernel->post('ua', 'cancel', $req);
 589                                                 $kernel->yield('download_entries');
 590                                         }
 591                                 }
 592                                 unless ($heap->{outfh} && mysyswrite($heap->{outfh}, $data)) {
 593                                         die "$!";
 594                                 }
 595                         } else { # Finished
 596                                 unless ($res->is_success or $res->status_line =~ /^416/) { # Requested Range not satisfiable
 597                                         die $res->status_line;
 598                                 }
 599                                 $kernel->call($_[SESSION], 'mark_as_completed', $heap->{filename});
 600                                 myclose($heap->{outfh});
 601                                 delete $heap->{outfh};
 602                                 $kernel->yield('download_entries');
 603                         }
 604                 },
 605                 calculate_speed => sub {
 606                         my $heap = $_[HEAP];
 607
 608                         my $now = time;
 609                         if ($now == $heap->{last_time}) {
 610                                 $_[KERNEL]->delay('calculate_speed' => 0.5);
 611                                 return;
 612                         }
 613                         my $spd = $heap->{oct} / 1024 / ($now - $heap->{last_time});
 614                         unless (defined $heap->{speeds}) {
 615                                 $heap->{speeds} = [];
 616                                 $heap->{speeds_i} = 0;
 617                                 for(my $i = 0; $i < 8; $i++) { $heap->{speeds}->[$i] = $spd; }
 618                         }
 619                         $heap->{speeds}->[$heap->{speeds_i}++] = $spd;
 620                         $heap->{speeds_i} %= @{$heap->{speeds}};
 621                         $heap->{oct} = 0;
 622
 623                         $heap->{spd} = 0;
 624                         foreach (@{$heap->{speeds}}) { $heap->{spd} += $_; }
 625                         $heap->{spd} /= @{$heap->{speeds}};
 626
 627                         $heap->{last_time} = time;
 628                         $_[KERNEL]->delay('calculate_speed' => 0.5);
 629                 },
 630                 calculate_avg_speed => sub {
 631                         my $heap = $_[HEAP];
 632
 633                         my $now = time;
 634                         $heap->{spd} = $heap->{len} / 1024 / ($now - $heap->{start_time});
 635                 },
 636                 # Prints the progress report
 637                 file_progress => sub {
 638                         my ($heap, $pos, $len, $oct)  = ($_[HEAP], @{$_[ARG1]});
 639
 640                         if ($pos eq $len) {
 641                                 $_[KERNEL]->call($_[SESSION], 'calculate_avg_speed');
 642                                 my $line = sprintf("100.00%% (avg. %4.2f kB/s)", $heap->{spd});
 643                                 myprint("\r" . $heap->{progress_message} . " $line" . (" " x ($heap->{prevlen} - length($line))) . "\n");
 644                                 delete $heap->{have_size};
 645                                 delete $heap->{prev_time};
 646                                 delete $heap->{prevlen};
 647                                 delete $heap->{spd};
 648                                 delete $heap->{speeds};
 649                                 $heap->{speeds_i} = 0;
 650                                 $_[KERNEL]->delay('calculate_speed');
 651                         } else {
 652                                 my $have_size = exists $heap->{have_size} ? $heap->{have_size} : 0;
 653
 654                                 my $spd = $heap->{spd} ? $heap->{spd} : undef;
 655
 656                                 $heap->{oct} += length($oct);
 657                                 $heap->{len} += $heap->{oct};
 658
 659                                 # $have_size may be a BigInt, use fixed point math / formatters
 660                                 my $pct = ($pos + $have_size)*10000/($len + $have_size);
 661
 662                                 my $line;
 663                                 if (defined($spd)) {
 664                                         $line = sprintf("%2d.%02d%% (%4.2f kB/s)", $pct / 100, $pct % 100, $spd);
 665                                 } else {
 666                                         $line = sprintf("%2d.%02d%%", $pct / 100, $pct % 100);
 667                                 }
 668                                 $heap->{prevlen} = length($line) unless defined $heap->{prevlen} and $heap->{prevlen} > length($line);
 669                                 myprint("$line" . (" " x ($heap->{prevlen} - length($line))) . "\r" . $heap->{progress_message} . " ");
 670                                 $heap->{prevlen} = length($line);
 671                         }
 672                 }
 673         }
 674 );
 675
 676 POE::Kernel->run();