methods/http.cc.orig

   1 // -*- mode: cpp; mode: fold -*-
   2 // Description                                                          /*{{{*/
   3 // $Id: http.cc,v 1.59 2004/05/08 19:42:35 mdz Exp $
   4 /* ######################################################################
   5
   6    HTTP Aquire Method - This is the HTTP aquire method for APT.
   7
   8    It uses HTTP/1.1 and many of the fancy options there-in, such as
   9    pipelining, range, if-range and so on.
  10
  11    It is based on a doubly buffered select loop. A groupe of requests are
  12    fed into a single output buffer that is constantly fed out the
  13    socket. This provides ideal pipelining as in many cases all of the
  14    requests will fit into a single packet. The input socket is buffered
  15    the same way and fed into the fd for the file (may be a pipe in future).
  16
  17    This double buffering provides fairly substantial transfer rates,
  18    compared to wget the http method is about 4% faster. Most importantly,
  19    when HTTP is compared with FTP as a protocol the speed difference is
  20    huge. In tests over the internet from two sites to llug (via ATM) this
  21    program got 230k/s sustained http transfer rates. FTP on the other
  22    hand topped out at 170k/s. That combined with the time to setup the
  23    FTP connection makes HTTP a vastly superior protocol.
  24
  25    ##################################################################### */
  26                                                                         /*}}}*/
  27 // Include Files                                                        /*{{{*/
  28 #include <apt-pkg/fileutl.h>
  29 #include <apt-pkg/acquire-method.h>
  30 #include <apt-pkg/error.h>
  31 #include <apt-pkg/hashes.h>
  32
  33 #include <sys/sysctl.h>
  34 #include <sys/stat.h>
  35 #include <sys/time.h>
  36 #include <utime.h>
  37 #include <unistd.h>
  38 #include <signal.h>
  39 #include <stdio.h>
  40 #include <errno.h>
  41 #include <string.h>
  42 #include <iostream>
  43 #include <apti18n.h>
  44
  45 // Internet stuff
  46 #include <netdb.h>
  47 #include <arpa/inet.h>
  48
  49 #include <CoreFoundation/CoreFoundation.h>
  50 #include <CoreServices/CoreServices.h>
  51 #include <SystemConfiguration/SystemConfiguration.h>
  52
  53 #include "connect.h"
  54 #include "rfc2553emu.h"
  55 #include "http.h"
  56
  57                                                                         /*}}}*/
  58 using namespace std;
  59
  60 CFStringRef Firmware_;
  61 const char *Machine_;
  62 const char *SerialNumber_;
  63
  64 void CfrsError(const char *name, CFReadStreamRef rs) {
  65     CFStreamError se = CFReadStreamGetError(rs);
  66
  67     if (se.domain == kCFStreamErrorDomainCustom) {
  68     } else if (se.domain == kCFStreamErrorDomainPOSIX) {
  69         _error->Error("POSIX: %s", strerror(se.error));
  70     } else if (se.domain == kCFStreamErrorDomainMacOSStatus) {
  71         _error->Error("MacOSStatus: %ld", se.error);
  72     } else if (se.domain == kCFStreamErrorDomainNetDB) {
  73         _error->Error("NetDB: %s %s", name, gai_strerror(se.error));
  74     } else if (se.domain == kCFStreamErrorDomainMach) {
  75         _error->Error("Mach: %ld", se.error);
  76     } else if (se.domain == kCFStreamErrorDomainHTTP) {
  77         switch (se.error) {
  78             case kCFStreamErrorHTTPParseFailure:
  79                 _error->Error("Parse failure");
  80             break;
  81
  82             case kCFStreamErrorHTTPRedirectionLoop:
  83                 _error->Error("Redirection loop");
  84             break;
  85
  86             case kCFStreamErrorHTTPBadURL:
  87                 _error->Error("Bad URL");
  88             break;
  89
  90             default:
  91                 _error->Error("Unknown HTTP error: %ld", se.error);
  92             break;
  93         }
  94     } else if (se.domain == kCFStreamErrorDomainSOCKS) {
  95         _error->Error("SOCKS: %ld", se.error);
  96     } else if (se.domain == kCFStreamErrorDomainSystemConfiguration) {
  97         _error->Error("SystemConfiguration: %ld", se.error);
  98     } else if (se.domain == kCFStreamErrorDomainSSL) {
  99         _error->Error("SSL: %ld", se.error);
 100     } else {
 101         _error->Error("Domain #%ld: %ld", se.domain, se.error);
 102     }
 103 }
 104
 105 string HttpMethod::FailFile;
 106 int HttpMethod::FailFd = -1;
 107 time_t HttpMethod::FailTime = 0;
 108 unsigned long PipelineDepth = 10;
 109 unsigned long TimeOut = 120;
 110 bool Debug = false;
 111
 112 unsigned long CircleBuf::BwReadLimit=0;
 113 unsigned long CircleBuf::BwTickReadData=0;
 114 struct timeval CircleBuf::BwReadTick={0,0};
 115 const unsigned int CircleBuf::BW_HZ=10;
 116
 117 // CircleBuf::CircleBuf - Circular input buffer                         /*{{{*/
 118 // ---------------------------------------------------------------------
 119 /* */
 120 CircleBuf::CircleBuf(unsigned long Size) : Size(Size), Hash(0)
 121 {
 122    Buf = new unsigned char[Size];
 123    Reset();
 124
 125    CircleBuf::BwReadLimit = _config->FindI("Acquire::http::Dl-Limit",0)*1024;
 126 }
 127                                                                         /*}}}*/
 128 // CircleBuf::Reset - Reset to the default state                        /*{{{*/
 129 // ---------------------------------------------------------------------
 130 /* */
 131 void CircleBuf::Reset()
 132 {
 133    InP = 0;
 134    OutP = 0;
 135    StrPos = 0;
 136    MaxGet = (unsigned int)-1;
 137    OutQueue = string();
 138    if (Hash != 0)
 139    {
 140       delete Hash;
 141       Hash = new Hashes;
 142    }
 143 };
 144                                                                         /*}}}*/
 145 // CircleBuf::Read - Read from a FD into the circular buffer            /*{{{*/
 146 // ---------------------------------------------------------------------
 147 /* This fills up the buffer with as much data as is in the FD, assuming it
 148    is non-blocking.. */
 149 bool CircleBuf::Read(int Fd)
 150 {
 151    unsigned long BwReadMax;
 152
 153    while (1)
 154    {
 155       // Woops, buffer is full
 156       if (InP - OutP == Size)
 157          return true;
 158
 159       // what's left to read in this tick
 160       BwReadMax = CircleBuf::BwReadLimit/BW_HZ;
 161
 162       if(CircleBuf::BwReadLimit) {
 163          struct timeval now;
 164          gettimeofday(&now,0);
 165
 166          unsigned long d = (now.tv_sec-CircleBuf::BwReadTick.tv_sec)*1000000 +
 167             now.tv_usec-CircleBuf::BwReadTick.tv_usec;
 168          if(d > 1000000/BW_HZ) {
 169             CircleBuf::BwReadTick = now;
 170             CircleBuf::BwTickReadData = 0;
 171          }
 172
 173          if(CircleBuf::BwTickReadData >= BwReadMax) {
 174             usleep(1000000/BW_HZ);
 175             return true;
 176          }
 177       }
 178
 179       // Write the buffer segment
 180       int Res;
 181       if(CircleBuf::BwReadLimit) {
 182          Res = read(Fd,Buf + (InP%Size),
 183                     BwReadMax > LeftRead() ? LeftRead() : BwReadMax);
 184       } else
 185          Res = read(Fd,Buf + (InP%Size),LeftRead());
 186
 187       if(Res > 0 && BwReadLimit > 0)
 188          CircleBuf::BwTickReadData += Res;
 189
 190       if (Res == 0)
 191          return false;
 192       if (Res < 0)
 193       {
 194          if (errno == EAGAIN)
 195             return true;
 196          return false;
 197       }
 198
 199       if (InP == 0)
 200          gettimeofday(&Start,0);
 201       InP += Res;
 202    }
 203 }
 204                                                                         /*}}}*/
 205 // CircleBuf::Read - Put the string into the buffer                     /*{{{*/
 206 // ---------------------------------------------------------------------
 207 /* This will hold the string in and fill the buffer with it as it empties */
 208 bool CircleBuf::Read(string Data)
 209 {
 210    OutQueue += Data;
 211    FillOut();
 212    return true;
 213 }
 214                                                                         /*}}}*/
 215 // CircleBuf::FillOut - Fill the buffer from the output queue           /*{{{*/
 216 // ---------------------------------------------------------------------
 217 /* */
 218 void CircleBuf::FillOut()
 219 {
 220    if (OutQueue.empty() == true)
 221       return;
 222    while (1)
 223    {
 224       // Woops, buffer is full
 225       if (InP - OutP == Size)
 226          return;
 227
 228       // Write the buffer segment
 229       unsigned long Sz = LeftRead();
 230       if (OutQueue.length() - StrPos < Sz)
 231          Sz = OutQueue.length() - StrPos;
 232       memcpy(Buf + (InP%Size),OutQueue.c_str() + StrPos,Sz);
 233
 234       // Advance
 235       StrPos += Sz;
 236       InP += Sz;
 237       if (OutQueue.length() == StrPos)
 238       {
 239          StrPos = 0;
 240          OutQueue = "";
 241          return;
 242       }
 243    }
 244 }
 245                                                                         /*}}}*/
 246 // CircleBuf::Write - Write from the buffer into a FD                   /*{{{*/
 247 // ---------------------------------------------------------------------
 248 /* This empties the buffer into the FD. */
 249 bool CircleBuf::Write(int Fd)
 250 {
 251    while (1)
 252    {
 253       FillOut();
 254
 255       // Woops, buffer is empty
 256       if (OutP == InP)
 257          return true;
 258
 259       if (OutP == MaxGet)
 260          return true;
 261
 262       // Write the buffer segment
 263       int Res;
 264       Res = write(Fd,Buf + (OutP%Size),LeftWrite());
 265
 266       if (Res == 0)
 267          return false;
 268       if (Res < 0)
 269       {
 270          if (errno == EAGAIN)
 271             return true;
 272
 273          return false;
 274       }
 275
 276       if (Hash != 0)
 277          Hash->Add(Buf + (OutP%Size),Res);
 278
 279       OutP += Res;
 280    }
 281 }
 282                                                                         /*}}}*/
 283 // CircleBuf::WriteTillEl - Write from the buffer to a string           /*{{{*/
 284 // ---------------------------------------------------------------------
 285 /* This copies till the first empty line */
 286 bool CircleBuf::WriteTillEl(string &Data,bool Single)
 287 {
 288    // We cheat and assume it is unneeded to have more than one buffer load
 289    for (unsigned long I = OutP; I < InP; I++)
 290    {
 291       if (Buf[I%Size] != '\n')
 292          continue;
 293       ++I;
 294
 295       if (Single == false)
 296       {
 297          if (I < InP  && Buf[I%Size] == '\r')
 298             ++I;
 299          if (I >= InP || Buf[I%Size] != '\n')
 300             continue;
 301          ++I;
 302       }
 303
 304       Data = "";
 305       while (OutP < I)
 306       {
 307          unsigned long Sz = LeftWrite();
 308          if (Sz == 0)
 309             return false;
 310          if (I - OutP < Sz)
 311             Sz = I - OutP;
 312          Data += string((char *)(Buf + (OutP%Size)),Sz);
 313          OutP += Sz;
 314       }
 315       return true;
 316    }
 317    return false;
 318 }
 319                                                                         /*}}}*/
 320 // CircleBuf::Stats - Print out stats information                       /*{{{*/
 321 // ---------------------------------------------------------------------
 322 /* */
 323 void CircleBuf::Stats()
 324 {
 325    if (InP == 0)
 326       return;
 327
 328    struct timeval Stop;
 329    gettimeofday(&Stop,0);
 330 /*   float Diff = Stop.tv_sec - Start.tv_sec +
 331              (float)(Stop.tv_usec - Start.tv_usec)/1000000;
 332    clog << "Got " << InP << " in " << Diff << " at " << InP/Diff << endl;*/
 333 }
 334                                                                         /*}}}*/
 335
 336 // ServerState::ServerState - Constructor                               /*{{{*/
 337 // ---------------------------------------------------------------------
 338 /* */
 339 ServerState::ServerState(URI Srv,HttpMethod *Owner) : Owner(Owner),
 340                         In(64*1024), Out(4*1024),
 341                         ServerName(Srv)
 342 {
 343    Reset();
 344 }
 345                                                                         /*}}}*/
 346 // ServerState::Open - Open a connection to the server                  /*{{{*/
 347 // ---------------------------------------------------------------------
 348 /* This opens a connection to the server. */
 349 bool ServerState::Open()
 350 {
 351    // Use the already open connection if possible.
 352    if (ServerFd != -1)
 353       return true;
 354
 355    Close();
 356    In.Reset();
 357    Out.Reset();
 358    Persistent = true;
 359
 360    // Determine the proxy setting
 361    if (getenv("http_proxy") == 0)
 362    {
 363       string DefProxy = _config->Find("Acquire::http::Proxy");
 364       string SpecificProxy = _config->Find("Acquire::http::Proxy::" + ServerName.Host);
 365       if (SpecificProxy.empty() == false)
 366       {
 367          if (SpecificProxy == "DIRECT")
 368             Proxy = "";
 369          else
 370             Proxy = SpecificProxy;
 371       }
 372       else
 373          Proxy = DefProxy;
 374    }
 375    else
 376       Proxy = getenv("http_proxy");
 377
 378    // Parse no_proxy, a , separated list of domains
 379    if (getenv("no_proxy") != 0)
 380    {
 381       if (CheckDomainList(ServerName.Host,getenv("no_proxy")) == true)
 382          Proxy = "";
 383    }
 384
 385    // Determine what host and port to use based on the proxy settings
 386    int Port = 0;
 387    string Host;
 388    if (Proxy.empty() == true || Proxy.Host.empty() == true)
 389    {
 390       if (ServerName.Port != 0)
 391          Port = ServerName.Port;
 392       Host = ServerName.Host;
 393    }
 394    else
 395    {
 396       if (Proxy.Port != 0)
 397          Port = Proxy.Port;
 398       Host = Proxy.Host;
 399    }
 400
 401    // Connect to the remote server
 402    if (Connect(Host,Port,"http",80,ServerFd,TimeOut,Owner) == false)
 403       return false;
 404
 405    return true;
 406 }
 407                                                                         /*}}}*/
 408 // ServerState::Close - Close a connection to the server                /*{{{*/
 409 // ---------------------------------------------------------------------
 410 /* */
 411 bool ServerState::Close()
 412 {
 413    close(ServerFd);
 414    ServerFd = -1;
 415    return true;
 416 }
 417                                                                         /*}}}*/
 418 // ServerState::RunHeaders - Get the headers before the data            /*{{{*/
 419 // ---------------------------------------------------------------------
 420 /* Returns 0 if things are OK, 1 if an IO error occursed and 2 if a header
 421    parse error occured */
 422 int ServerState::RunHeaders()
 423 {
 424    State = Header;
 425
 426    Owner->Status(_("Waiting for headers"));
 427
 428    Major = 0;
 429    Minor = 0;
 430    Result = 0;
 431    Size = 0;
 432    StartPos = 0;
 433    Encoding = Closes;
 434    HaveContent = false;
 435    time(&Date);
 436
 437    do
 438    {
 439       string Data;
 440       if (In.WriteTillEl(Data) == false)
 441          continue;
 442
 443       if (Debug == true)
 444          clog << Data;
 445
 446       for (string::const_iterator I = Data.begin(); I < Data.end(); I++)
 447       {
 448          string::const_iterator J = I;
 449          for (; J != Data.end() && *J != '\n' && *J != '\r';J++);
 450          if (HeaderLine(string(I,J)) == false)
 451             return 2;
 452          I = J;
 453       }
 454
 455       // 100 Continue is a Nop...
 456       if (Result == 100)
 457          continue;
 458
 459       // Tidy up the connection persistance state.
 460       if (Encoding == Closes && HaveContent == true)
 461          Persistent = false;
 462
 463       return 0;
 464    }
 465    while (Owner->Go(false,this) == true);
 466
 467    return 1;
 468 }
 469                                                                         /*}}}*/
 470 // ServerState::RunData - Transfer the data from the socket             /*{{{*/
 471 // ---------------------------------------------------------------------
 472 /* */
 473 bool ServerState::RunData()
 474 {
 475    State = Data;
 476
 477    // Chunked transfer encoding is fun..
 478    if (Encoding == Chunked)
 479    {
 480       while (1)
 481       {
 482          // Grab the block size
 483          bool Last = true;
 484          string Data;
 485          In.Limit(-1);
 486          do
 487          {
 488             if (In.WriteTillEl(Data,true) == true)
 489                break;
 490          }
 491          while ((Last = Owner->Go(false,this)) == true);
 492
 493          if (Last == false)
 494             return false;
 495
 496          // See if we are done
 497          unsigned long Len = strtol(Data.c_str(),0,16);
 498          if (Len == 0)
 499          {
 500             In.Limit(-1);
 501
 502             // We have to remove the entity trailer
 503             Last = true;
 504             do
 505             {
 506                if (In.WriteTillEl(Data,true) == true && Data.length() <= 2)
 507                   break;
 508             }
 509             while ((Last = Owner->Go(false,this)) == true);
 510             if (Last == false)
 511                return false;
 512             return !_error->PendingError();
 513          }
 514
 515          // Transfer the block
 516          In.Limit(Len);
 517          while (Owner->Go(true,this) == true)
 518             if (In.IsLimit() == true)
 519                break;
 520
 521          // Error
 522          if (In.IsLimit() == false)
 523             return false;
 524
 525          // The server sends an extra new line before the next block specifier..
 526          In.Limit(-1);
 527          Last = true;
 528          do
 529          {
 530             if (In.WriteTillEl(Data,true) == true)
 531                break;
 532          }
 533          while ((Last = Owner->Go(false,this)) == true);
 534          if (Last == false)
 535             return false;
 536       }
 537    }
 538    else
 539    {
 540       /* Closes encoding is used when the server did not specify a size, the
 541          loss of the connection means we are done */
 542       if (Encoding == Closes)
 543          In.Limit(-1);
 544       else
 545          In.Limit(Size - StartPos);
 546
 547       // Just transfer the whole block.
 548       do
 549       {
 550          if (In.IsLimit() == false)
 551             continue;
 552
 553          In.Limit(-1);
 554          return !_error->PendingError();
 555       }
 556       while (Owner->Go(true,this) == true);
 557    }
 558
 559    return Owner->Flush(this) && !_error->PendingError();
 560 }
 561                                                                         /*}}}*/
 562 // ServerState::HeaderLine - Process a header line                      /*{{{*/
 563 // ---------------------------------------------------------------------
 564 /* */
 565 bool ServerState::HeaderLine(string Line)
 566 {
 567    if (Line.empty() == true)
 568       return true;
 569
 570    // The http server might be trying to do something evil.
 571    if (Line.length() >= MAXLEN)
 572       return _error->Error(_("Got a single header line over %u chars"),MAXLEN);
 573
 574    string::size_type Pos = Line.find(' ');
 575    if (Pos == string::npos || Pos+1 > Line.length())
 576    {
 577       // Blah, some servers use "connection:closes", evil.
 578       Pos = Line.find(':');
 579       if (Pos == string::npos || Pos + 2 > Line.length())
 580          return _error->Error(_("Bad header line"));
 581       Pos++;
 582    }
 583
 584    // Parse off any trailing spaces between the : and the next word.
 585    string::size_type Pos2 = Pos;
 586    while (Pos2 < Line.length() && isspace(Line[Pos2]) != 0)
 587       Pos2++;
 588
 589    string Tag = string(Line,0,Pos);
 590    string Val = string(Line,Pos2);
 591
 592    if (stringcasecmp(Tag.c_str(),Tag.c_str()+4,"HTTP") == 0)
 593    {
 594       // Evil servers return no version
 595       if (Line[4] == '/')
 596       {
 597          if (sscanf(Line.c_str(),"HTTP/%u.%u %u %[^\n]",&Major,&Minor,
 598                     &Result,Code) != 4)
 599             return _error->Error(_("The HTTP server sent an invalid reply header"));
 600       }
 601       else
 602       {
 603          Major = 0;
 604          Minor = 9;
 605          if (sscanf(Line.c_str(),"HTTP %u %[^\n]",&Result,Code) != 2)
 606             return _error->Error(_("The HTTP server sent an invalid reply header"));
 607       }
 608
 609       /* Check the HTTP response header to get the default persistance
 610          state. */
 611       if (Major < 1)
 612          Persistent = false;
 613       else
 614       {
 615          if (Major == 1 && Minor <= 0)
 616             Persistent = false;
 617          else
 618             Persistent = true;
 619       }
 620
 621       return true;
 622    }
 623
 624    if (stringcasecmp(Tag,"Content-Length:") == 0)
 625    {
 626       if (Encoding == Closes)
 627          Encoding = Stream;
 628       HaveContent = true;
 629
 630       // The length is already set from the Content-Range header
 631       if (StartPos != 0)
 632          return true;
 633
 634       if (sscanf(Val.c_str(),"%lu",&Size) != 1)
 635          return _error->Error(_("The HTTP server sent an invalid Content-Length header"));
 636       return true;
 637    }
 638
 639    if (stringcasecmp(Tag,"Content-Type:") == 0)
 640    {
 641       HaveContent = true;
 642       return true;
 643    }
 644
 645    if (stringcasecmp(Tag,"Content-Range:") == 0)
 646    {
 647       HaveContent = true;
 648
 649       if (sscanf(Val.c_str(),"bytes %lu-%*u/%lu",&StartPos,&Size) != 2)
 650          return _error->Error(_("The HTTP server sent an invalid Content-Range header"));
 651       if ((unsigned)StartPos > Size)
 652          return _error->Error(_("This HTTP server has broken range support"));
 653       return true;
 654    }
 655
 656    if (stringcasecmp(Tag,"Transfer-Encoding:") == 0)
 657    {
 658       HaveContent = true;
 659       if (stringcasecmp(Val,"chunked") == 0)
 660          Encoding = Chunked;
 661       return true;
 662    }
 663
 664    if (stringcasecmp(Tag,"Connection:") == 0)
 665    {
 666       if (stringcasecmp(Val,"close") == 0)
 667          Persistent = false;
 668       if (stringcasecmp(Val,"keep-alive") == 0)
 669          Persistent = true;
 670       return true;
 671    }
 672
 673    if (stringcasecmp(Tag,"Last-Modified:") == 0)
 674    {
 675       if (StrToTime(Val,Date) == false)
 676          return _error->Error(_("Unknown date format"));
 677       return true;
 678    }
 679
 680    return true;
 681 }
 682                                                                         /*}}}*/
 683
 684 // HttpMethod::SendReq - Send the HTTP request                          /*{{{*/
 685 // ---------------------------------------------------------------------
 686 /* This places the http request in the outbound buffer */
 687 void HttpMethod::SendReq(FetchItem *Itm,CircleBuf &Out)
 688 {
 689    URI Uri = Itm->Uri;
 690
 691    // The HTTP server expects a hostname with a trailing :port
 692    char Buf[1000];
 693    string ProperHost = Uri.Host;
 694    if (Uri.Port != 0)
 695    {
 696       sprintf(Buf,":%u",Uri.Port);
 697       ProperHost += Buf;
 698    }
 699
 700    // Just in case.
 701    if (Itm->Uri.length() >= sizeof(Buf))
 702        abort();
 703
 704    /* Build the request. We include a keep-alive header only for non-proxy
 705       requests. This is to tweak old http/1.0 servers that do support keep-alive
 706       but not HTTP/1.1 automatic keep-alive. Doing this with a proxy server
 707       will glitch HTTP/1.0 proxies because they do not filter it out and
 708       pass it on, HTTP/1.1 says the connection should default to keep alive
 709       and we expect the proxy to do this */
 710    if (Proxy.empty() == true || Proxy.Host.empty())
 711       sprintf(Buf,"GET %s HTTP/1.1\r\nHost: %s\r\nConnection: keep-alive\r\n",
 712               QuoteString(Uri.Path,"~").c_str(),ProperHost.c_str());
 713    else
 714    {
 715       /* Generate a cache control header if necessary. We place a max
 716          cache age on index files, optionally set a no-cache directive
 717          and a no-store directive for archives. */
 718       sprintf(Buf,"GET %s HTTP/1.1\r\nHost: %s\r\n",
 719               Itm->Uri.c_str(),ProperHost.c_str());
 720       // only generate a cache control header if we actually want to
 721       // use a cache
 722       if (_config->FindB("Acquire::http::No-Cache",false) == false)
 723       {
 724          if (Itm->IndexFile == true)
 725             sprintf(Buf+strlen(Buf),"Cache-Control: max-age=%u\r\n",
 726                     _config->FindI("Acquire::http::Max-Age",0));
 727          else
 728          {
 729             if (_config->FindB("Acquire::http::No-Store",false) == true)
 730                strcat(Buf,"Cache-Control: no-store\r\n");
 731          }
 732       }
 733    }
 734    // generate a no-cache header if needed
 735    if (_config->FindB("Acquire::http::No-Cache",false) == true)
 736       strcat(Buf,"Cache-Control: no-cache\r\nPragma: no-cache\r\n");
 737
 738
 739    string Req = Buf;
 740
 741    // Check for a partial file
 742    struct stat SBuf;
 743    if (stat(Itm->DestFile.c_str(),&SBuf) >= 0 && SBuf.st_size > 0)
 744    {
 745       // In this case we send an if-range query with a range header
 746       sprintf(Buf,"Range: bytes=%li-\r\nIf-Range: %s\r\n",(long)SBuf.st_size - 1,
 747               TimeRFC1123(SBuf.st_mtime).c_str());
 748       Req += Buf;
 749    }
 750    else
 751    {
 752       if (Itm->LastModified != 0)
 753       {
 754          sprintf(Buf,"If-Modified-Since: %s\r\n",TimeRFC1123(Itm->LastModified).c_str());
 755          Req += Buf;
 756       }
 757    }
 758
 759    if (Proxy.User.empty() == false || Proxy.Password.empty() == false)
 760       Req += string("Proxy-Authorization: Basic ") +
 761           Base64Encode(Proxy.User + ":" + Proxy.Password) + "\r\n";
 762
 763    if (Uri.User.empty() == false || Uri.Password.empty() == false)
 764       Req += string("Authorization: Basic ") +
 765           Base64Encode(Uri.User + ":" + Uri.Password) + "\r\n";
 766
 767    Req += "User-Agent: Debian APT-HTTP/1.3\r\n\r\n";
 768
 769    if (Debug == true)
 770       cerr << Req << endl;
 771
 772    Out.Read(Req);
 773 }
 774                                                                         /*}}}*/
 775 // HttpMethod::Go - Run a single loop                                   /*{{{*/
 776 // ---------------------------------------------------------------------
 777 /* This runs the select loop over the server FDs, Output file FDs and
 778    stdin. */
 779 bool HttpMethod::Go(bool ToFile,ServerState *Srv)
 780 {
 781    // Server has closed the connection
 782    if (Srv->ServerFd == -1 && (Srv->In.WriteSpace() == false ||
 783                                ToFile == false))
 784       return false;
 785
 786    fd_set rfds,wfds;
 787    FD_ZERO(&rfds);
 788    FD_ZERO(&wfds);
 789
 790    /* Add the server. We only send more requests if the connection will
 791       be persisting */
 792    if (Srv->Out.WriteSpace() == true && Srv->ServerFd != -1
 793        && Srv->Persistent == true)
 794       FD_SET(Srv->ServerFd,&wfds);
 795    if (Srv->In.ReadSpace() == true && Srv->ServerFd != -1)
 796       FD_SET(Srv->ServerFd,&rfds);
 797
 798    // Add the file
 799    int FileFD = -1;
 800    if (File != 0)
 801       FileFD = File->Fd();
 802
 803    if (Srv->In.WriteSpace() == true && ToFile == true && FileFD != -1)
 804       FD_SET(FileFD,&wfds);
 805
 806    // Add stdin
 807    FD_SET(STDIN_FILENO,&rfds);
 808
 809    // Figure out the max fd
 810    int MaxFd = FileFD;
 811    if (MaxFd < Srv->ServerFd)
 812       MaxFd = Srv->ServerFd;
 813
 814    // Select
 815    struct timeval tv;
 816    tv.tv_sec = TimeOut;
 817    tv.tv_usec = 0;
 818    int Res = 0;
 819    if ((Res = select(MaxFd+1,&rfds,&wfds,0,&tv)) < 0)
 820    {
 821       if (errno == EINTR)
 822          return true;
 823       return _error->Errno("select",_("Select failed"));
 824    }
 825
 826    if (Res == 0)
 827    {
 828       _error->Error(_("Connection timed out"));
 829       return ServerDie(Srv);
 830    }
 831
 832    // Handle server IO
 833    if (Srv->ServerFd != -1 && FD_ISSET(Srv->ServerFd,&rfds))
 834    {
 835       errno = 0;
 836       if (Srv->In.Read(Srv->ServerFd) == false)
 837          return ServerDie(Srv);
 838    }
 839
 840    if (Srv->ServerFd != -1 && FD_ISSET(Srv->ServerFd,&wfds))
 841    {
 842       errno = 0;
 843       if (Srv->Out.Write(Srv->ServerFd) == false)
 844          return ServerDie(Srv);
 845    }
 846
 847    // Send data to the file
 848    if (FileFD != -1 && FD_ISSET(FileFD,&wfds))
 849    {
 850       if (Srv->In.Write(FileFD) == false)
 851          return _error->Errno("write",_("Error writing to output file"));
 852    }
 853
 854    // Handle commands from APT
 855    if (FD_ISSET(STDIN_FILENO,&rfds))
 856    {
 857       if (Run(true) != -1)
 858          exit(100);
 859    }
 860
 861    return true;
 862 }
 863                                                                         /*}}}*/
 864 // HttpMethod::Flush - Dump the buffer into the file                    /*{{{*/
 865 // ---------------------------------------------------------------------
 866 /* This takes the current input buffer from the Server FD and writes it
 867    into the file */
 868 bool HttpMethod::Flush(ServerState *Srv)
 869 {
 870    if (File != 0)
 871    {
 872       // on GNU/kFreeBSD, apt dies on /dev/null because non-blocking
 873       // can't be set
 874       if (File->Name() != "/dev/null")
 875          SetNonBlock(File->Fd(),false);
 876       if (Srv->In.WriteSpace() == false)
 877          return true;
 878
 879       while (Srv->In.WriteSpace() == true)
 880       {
 881          if (Srv->In.Write(File->Fd()) == false)
 882             return _error->Errno("write",_("Error writing to file"));
 883          if (Srv->In.IsLimit() == true)
 884             return true;
 885       }
 886
 887       if (Srv->In.IsLimit() == true || Srv->Encoding == ServerState::Closes)
 888          return true;
 889    }
 890    return false;
 891 }
 892                                                                         /*}}}*/
 893 // HttpMethod::ServerDie - The server has closed the connection.        /*{{{*/
 894 // ---------------------------------------------------------------------
 895 /* */
 896 bool HttpMethod::ServerDie(ServerState *Srv)
 897 {
 898    unsigned int LErrno = errno;
 899
 900    // Dump the buffer to the file
 901    if (Srv->State == ServerState::Data)
 902    {
 903       // on GNU/kFreeBSD, apt dies on /dev/null because non-blocking
 904       // can't be set
 905       if (File->Name() != "/dev/null")
 906          SetNonBlock(File->Fd(),false);
 907       while (Srv->In.WriteSpace() == true)
 908       {
 909          if (Srv->In.Write(File->Fd()) == false)
 910             return _error->Errno("write",_("Error writing to the file"));
 911
 912          // Done
 913          if (Srv->In.IsLimit() == true)
 914             return true;
 915       }
 916    }
 917
 918    // See if this is because the server finished the data stream
 919    if (Srv->In.IsLimit() == false && Srv->State != ServerState::Header &&
 920        Srv->Encoding != ServerState::Closes)
 921    {
 922       Srv->Close();
 923       if (LErrno == 0)
 924          return _error->Error(_("Error reading from server. Remote end closed connection"));
 925       errno = LErrno;
 926       return _error->Errno("read",_("Error reading from server"));
 927    }
 928    else
 929    {
 930       Srv->In.Limit(-1);
 931
 932       // Nothing left in the buffer
 933       if (Srv->In.WriteSpace() == false)
 934          return false;
 935
 936       // We may have got multiple responses back in one packet..
 937       Srv->Close();
 938       return true;
 939    }
 940
 941    return false;
 942 }
 943                                                                         /*}}}*/
 944 // HttpMethod::DealWithHeaders - Handle the retrieved header data       /*{{{*/
 945 // ---------------------------------------------------------------------
 946 /* We look at the header data we got back from the server and decide what
 947    to do. Returns
 948      0 - File is open,
 949      1 - IMS hit
 950      3 - Unrecoverable error
 951      4 - Error with error content page
 952      5 - Unrecoverable non-server error (close the connection) */
 953 int HttpMethod::DealWithHeaders(FetchResult &Res,ServerState *Srv)
 954 {
 955    // Not Modified
 956    if (Srv->Result == 304)
 957    {
 958       unlink(Queue->DestFile.c_str());
 959       Res.IMSHit = true;
 960       Res.LastModified = Queue->LastModified;
 961       return 1;
 962    }
 963
 964    /* We have a reply we dont handle. This should indicate a perm server
 965       failure */
 966    if (Srv->Result < 200 || Srv->Result >= 300)
 967    {
 968       _error->Error("%u %s",Srv->Result,Srv->Code);
 969       if (Srv->HaveContent == true)
 970          return 4;
 971       return 3;
 972    }
 973
 974    // This is some sort of 2xx 'data follows' reply
 975    Res.LastModified = Srv->Date;
 976    Res.Size = Srv->Size;
 977
 978    // Open the file
 979    delete File;
 980    File = new FileFd(Queue->DestFile,FileFd::WriteAny);
 981    if (_error->PendingError() == true)
 982       return 5;
 983
 984    FailFile = Queue->DestFile;
 985    FailFile.c_str();   // Make sure we dont do a malloc in the signal handler
 986    FailFd = File->Fd();
 987    FailTime = Srv->Date;
 988
 989    // Set the expected size
 990    if (Srv->StartPos >= 0)
 991    {
 992       Res.ResumePoint = Srv->StartPos;
 993       ftruncate(File->Fd(),Srv->StartPos);
 994    }
 995
 996    // Set the start point
 997    lseek(File->Fd(),0,SEEK_END);
 998
 999    delete Srv->In.Hash;
1000    Srv->In.Hash = new Hashes;
1001
1002    // Fill the Hash if the file is non-empty (resume)
1003    if (Srv->StartPos > 0)
1004    {
1005       lseek(File->Fd(),0,SEEK_SET);
1006       if (Srv->In.Hash->AddFD(File->Fd(),Srv->StartPos) == false)
1007       {
1008          _error->Errno("read",_("Problem hashing file"));
1009          return 5;
1010       }
1011       lseek(File->Fd(),0,SEEK_END);
1012    }
1013
1014    SetNonBlock(File->Fd(),true);
1015    return 0;
1016 }
1017                                                                         /*}}}*/
1018 // HttpMethod::SigTerm - Handle a fatal signal                          /*{{{*/
1019 // ---------------------------------------------------------------------
1020 /* This closes and timestamps the open file. This is neccessary to get
1021    resume behavoir on user abort */
1022 void HttpMethod::SigTerm(int)
1023 {
1024    if (FailFd == -1)
1025       _exit(100);
1026    close(FailFd);
1027
1028    // Timestamp
1029    struct utimbuf UBuf;
1030    UBuf.actime = FailTime;
1031    UBuf.modtime = FailTime;
1032    utime(FailFile.c_str(),&UBuf);
1033
1034    _exit(100);
1035 }
1036                                                                         /*}}}*/
1037 // HttpMethod::Fetch - Fetch an item                                    /*{{{*/
1038 // ---------------------------------------------------------------------
1039 /* This adds an item to the pipeline. We keep the pipeline at a fixed
1040    depth. */
1041 bool HttpMethod::Fetch(FetchItem *)
1042 {
1043    if (Server == 0)
1044       return true;
1045
1046    // Queue the requests
1047    int Depth = -1;
1048    bool Tail = false;
1049    for (FetchItem *I = Queue; I != 0 && Depth < (signed)PipelineDepth;
1050         I = I->Next, Depth++)
1051    {
1052       // If pipelining is disabled, we only queue 1 request
1053       if (Server->Pipeline == false && Depth >= 0)
1054          break;
1055
1056       // Make sure we stick with the same server
1057       if (Server->Comp(I->Uri) == false)
1058          break;
1059       if (QueueBack == I)
1060          Tail = true;
1061       if (Tail == true)
1062       {
1063          QueueBack = I->Next;
1064          SendReq(I,Server->Out);
1065          continue;
1066       }
1067    }
1068
1069    return true;
1070 };
1071                                                                         /*}}}*/
1072 // HttpMethod::Configuration - Handle a configuration message           /*{{{*/
1073 // ---------------------------------------------------------------------
1074 /* We stash the desired pipeline depth */
1075 bool HttpMethod::Configuration(string Message)
1076 {
1077    if (pkgAcqMethod::Configuration(Message) == false)
1078       return false;
1079
1080    TimeOut = _config->FindI("Acquire::http::Timeout",TimeOut);
1081    PipelineDepth = _config->FindI("Acquire::http::Pipeline-Depth",
1082                                   PipelineDepth);
1083    Debug = _config->FindB("Debug::Acquire::http",false);
1084
1085    return true;
1086 }
1087                                                                         /*}}}*/
1088 // HttpMethod::Loop - Main loop                                         /*{{{*/
1089 // ---------------------------------------------------------------------
1090 /* */
1091 int HttpMethod::Loop()
1092 {
1093    signal(SIGTERM,SigTerm);
1094    signal(SIGINT,SigTerm);
1095
1096    Server = 0;
1097
1098    int FailCounter = 0;
1099    while (1)
1100    {
1101       // We have no commands, wait for some to arrive
1102       if (Queue == 0)
1103       {
1104          if (WaitFd(STDIN_FILENO) == false)
1105             return 0;
1106       }
1107
1108       /* Run messages, we can accept 0 (no message) if we didn't
1109          do a WaitFd above.. Otherwise the FD is closed. */
1110       int Result = Run(true);
1111       if (Result != -1 && (Result != 0 || Queue == 0))
1112          return 100;
1113
1114       if (Queue == 0)
1115          continue;
1116
1117       CFStringEncoding se = kCFStringEncodingUTF8;
1118
1119       char *url = strdup(Queue->Uri.c_str());
1120     url:
1121       URI uri = std::string(url);
1122       std::string hs = uri.Host;
1123
1124       std::string urs = uri;
1125
1126       CFStringRef sr = CFStringCreateWithCString(kCFAllocatorDefault, urs.c_str(), se);
1127       CFURLRef ur = CFURLCreateWithString(kCFAllocatorDefault, sr, NULL);
1128       CFRelease(sr);
1129       CFHTTPMessageRef hm = CFHTTPMessageCreateRequest(kCFAllocatorDefault, CFSTR("GET"), ur, kCFHTTPVersion1_1);
1130       CFRelease(ur);
1131
1132       struct stat SBuf;
1133       if (stat(Queue->DestFile.c_str(), &SBuf) >= 0 && SBuf.st_size > 0) {
1134          sr = CFStringCreateWithFormat(kCFAllocatorDefault, NULL, CFSTR("bytes=%li-"), (long) SBuf.st_size - 1);
1135          CFHTTPMessageSetHeaderFieldValue(hm, CFSTR("Range"), sr);
1136          CFRelease(sr);
1137
1138          sr = CFStringCreateWithCString(kCFAllocatorDefault, TimeRFC1123(SBuf.st_mtime).c_str(), se);
1139          CFHTTPMessageSetHeaderFieldValue(hm, CFSTR("If-Range"), sr);
1140          CFRelease(sr);
1141       } else if (Queue->LastModified != 0) {
1142          sr = CFStringCreateWithCString(kCFAllocatorDefault, TimeRFC1123(SBuf.st_mtime).c_str(), se);
1143          CFHTTPMessageSetHeaderFieldValue(hm, CFSTR("If-Modified-Since"), sr);
1144          CFRelease(sr);
1145       }
1146
1147       if (Firmware_ != NULL)
1148          CFHTTPMessageSetHeaderFieldValue(hm, CFSTR("X-Firmware"), Firmware_);
1149
1150       sr = CFStringCreateWithCString(kCFAllocatorDefault, Machine_, se);
1151       CFHTTPMessageSetHeaderFieldValue(hm, CFSTR("X-Machine"), sr);
1152       CFRelease(sr);
1153
1154       sr = CFStringCreateWithCString(kCFAllocatorDefault, SerialNumber_, se);
1155       CFHTTPMessageSetHeaderFieldValue(hm, CFSTR("X-Serial-Number"), sr);
1156       CFRelease(sr);
1157
1158       CFHTTPMessageSetHeaderFieldValue(hm, CFSTR("User-Agent"), CFSTR("Telesphoreo APT-HTTP/1.0.98"));
1159
1160       CFReadStreamRef rs = CFReadStreamCreateForHTTPRequest(kCFAllocatorDefault, hm);
1161       CFRelease(hm);
1162
1163       CFDictionaryRef dr = SCDynamicStoreCopyProxies(NULL);
1164       CFReadStreamSetProperty(rs, kCFStreamPropertyHTTPProxy, dr);
1165       CFRelease(dr);
1166
1167       //CFReadStreamSetProperty(rs, kCFStreamPropertyHTTPShouldAutoredirect, kCFBooleanTrue);
1168       CFReadStreamSetProperty(rs, kCFStreamPropertyHTTPAttemptPersistentConnection, kCFBooleanTrue);
1169
1170       FetchResult Res;
1171       CFIndex rd;
1172       UInt32 sc;
1173
1174       uint8_t data[10240];
1175       size_t offset = 0;
1176
1177       Status("Connecting to %s", hs.c_str());
1178
1179       if (!CFReadStreamOpen(rs)) {
1180          CfrsError("Open", rs);
1181          Fail(true);
1182          goto done;
1183       }
1184
1185       rd = CFReadStreamRead(rs, data, sizeof(data));
1186
1187       if (rd == -1) {
1188          CfrsError(uri.Host.c_str(), rs);
1189          Fail(true);
1190          goto done;
1191       }
1192
1193       Res.Filename = Queue->DestFile;
1194
1195       hm = (CFHTTPMessageRef) CFReadStreamCopyProperty(rs, kCFStreamPropertyHTTPResponseHeader);
1196       sc = CFHTTPMessageGetResponseStatusCode(hm);
1197
1198       if (sc == 301 || sc == 302) {
1199          sr = CFHTTPMessageCopyHeaderFieldValue(hm, CFSTR("Location"));
1200          if (sr == NULL) {
1201             Fail();
1202             goto done_;
1203          } else {
1204             size_t ln = CFStringGetLength(sr) + 1;
1205             free(url);
1206             url = static_cast<char *>(malloc(ln));
1207
1208             if (!CFStringGetCString(sr, url, ln, se)) {
1209                Fail();
1210                goto done_;
1211             }
1212
1213             CFRelease(sr);
1214             goto url;
1215          }
1216       }
1217
1218       sr = CFHTTPMessageCopyHeaderFieldValue(hm, CFSTR("Content-Range"));
1219       if (sr != NULL) {
1220          size_t ln = CFStringGetLength(sr) + 1;
1221          char cr[ln];
1222
1223          if (!CFStringGetCString(sr, cr, ln, se)) {
1224             Fail();
1225             goto done_;
1226          }
1227
1228          CFRelease(sr);
1229
1230          if (sscanf(cr, "bytes %lu-%*u/%lu", &offset, &Res.Size) != 2) {
1231             _error->Error(_("The HTTP server sent an invalid Content-Range header"));
1232             Fail();
1233             goto done_;
1234          }
1235
1236          if (offset > Res.Size) {
1237             _error->Error(_("This HTTP server has broken range support"));
1238             Fail();
1239             goto done_;
1240          }
1241       } else {
1242          sr = CFHTTPMessageCopyHeaderFieldValue(hm, CFSTR("Content-Length"));
1243          if (sr != NULL) {
1244             Res.Size = CFStringGetIntValue(sr);
1245             CFRelease(sr);
1246          }
1247       }
1248
1249       time(&Res.LastModified);
1250
1251       sr = CFHTTPMessageCopyHeaderFieldValue(hm, CFSTR("Last-Modified"));
1252       if (sr != NULL) {
1253          size_t ln = CFStringGetLength(sr) + 1;
1254          char cr[ln];
1255
1256          if (!CFStringGetCString(sr, cr, ln, se)) {
1257             Fail();
1258             goto done_;
1259          }
1260
1261          CFRelease(sr);
1262
1263          if (!StrToTime(cr, Res.LastModified)) {
1264             _error->Error(_("Unknown date format"));
1265             Fail();
1266             goto done_;
1267          }
1268       }
1269
1270       CFRelease(hm);
1271
1272       if (sc == 304) {
1273          unlink(Queue->DestFile.c_str());
1274          Res.IMSHit = true;
1275          Res.LastModified = Queue->LastModified;
1276          URIDone(Res);
1277       } else if (sc < 200 || sc >= 300)
1278          Fail();
1279       else {
1280          Hashes hash;
1281
1282          File = new FileFd(Queue->DestFile, FileFd::WriteAny);
1283          if (_error->PendingError() == true) {
1284             delete File;
1285             File = NULL;
1286             Fail();
1287             goto done;
1288          }
1289
1290          FailFile = Queue->DestFile;
1291          FailFile.c_str();   // Make sure we dont do a malloc in the signal handler
1292          FailFd = File->Fd();
1293          FailTime = Res.LastModified;
1294
1295          Res.ResumePoint = offset;
1296          ftruncate(File->Fd(), offset);
1297
1298          if (offset != 0) {
1299             lseek(File->Fd(), 0, SEEK_SET);
1300             if (!hash.AddFD(File->Fd(), offset)) {
1301                _error->Errno("read", _("Problem hashing file"));
1302                delete File;
1303                File = NULL;
1304                Fail();
1305                goto done;
1306             }
1307          }
1308
1309          lseek(File->Fd(), 0, SEEK_END);
1310
1311          URIStart(Res);
1312
1313          read: if (rd == -1) {
1314             CfrsError("rd", rs);
1315             Fail(true);
1316          } else if (rd == 0) {
1317             if (Res.Size == 0)
1318                Res.Size = File->Size();
1319
1320             struct utimbuf UBuf;
1321             time(&UBuf.actime);
1322             UBuf.actime = Res.LastModified;
1323             UBuf.modtime = Res.LastModified;
1324             utime(Queue->DestFile.c_str(), &UBuf);
1325
1326             Res.TakeHashes(hash);
1327             URIDone(Res);
1328          } else {
1329             hash.Add(data, rd);
1330
1331             uint8_t *dt = data;
1332             while (rd != 0) {
1333                int sz = write(File->Fd(), dt, rd);
1334
1335                if (sz == -1) {
1336                    delete File;
1337                    File = NULL;
1338                    Fail();
1339                    goto done;
1340                }
1341
1342                dt += sz;
1343                rd -= sz;
1344             }
1345
1346             rd = CFReadStreamRead(rs, data, sizeof(data));
1347             goto read;
1348          }
1349       }
1350
1351      goto done;
1352     done_:
1353       CFRelease(hm);
1354     done:
1355       CFReadStreamClose(rs);
1356       CFRelease(rs);
1357       free(url);
1358
1359       FailCounter = 0;
1360    }
1361
1362    return 0;
1363 }
1364                                                                         /*}}}*/
1365
1366 int main()
1367 {
1368    setlocale(LC_ALL, "");
1369
1370    HttpMethod Mth;
1371
1372     size_t size;
1373     sysctlbyname("hw.machine", NULL, &size, NULL, 0);
1374     char *machine = new char[size];
1375     sysctlbyname("hw.machine", machine, &size, NULL, 0);
1376     Machine_ = machine;
1377
1378     const char *path = "/System/Library/CoreServices/SystemVersion.plist";
1379     CFURLRef url = CFURLCreateFromFileSystemRepresentation(kCFAllocatorDefault, (uint8_t *) path, strlen(path), false);
1380
1381     CFPropertyListRef plist; {
1382         CFReadStreamRef stream = CFReadStreamCreateWithFile(kCFAllocatorDefault, url);
1383         CFReadStreamOpen(stream);
1384         plist = CFPropertyListCreateFromStream(kCFAllocatorDefault, stream, 0, kCFPropertyListImmutable, NULL, NULL);
1385         CFReadStreamClose(stream);
1386     }
1387
1388     CFRelease(url);
1389
1390     if (plist != NULL) {
1391         Firmware_ = (CFStringRef) CFRetain(CFDictionaryGetValue((CFDictionaryRef) plist, CFSTR("ProductVersion")));
1392         CFRelease(plist);
1393     }
1394
1395     if (CFMutableDictionaryRef dict = IOServiceMatching("IOPlatformExpertDevice"))
1396         if (io_service_t service = IOServiceGetMatchingService(kIOMasterPortDefault, dict)) {
1397             if (CFTypeRef serial = IORegistryEntryCreateCFProperty(service, CFSTR(kIOPlatformSerialNumberKey), kCFAllocatorDefault, 0)) {
1398                 SerialNumber_ = strdup(CFStringGetCStringPtr((CFStringRef) serial, CFStringGetSystemEncoding()));
1399                 CFRelease(serial);
1400             }
1401
1402             IOObjectRelease(service);
1403         }
1404
1405    return Mth.Loop();
1406 }
1407
1408