handle complete responses to https range requests

[apt.git] / methods / http.cc

diff --git a/methods/http.cc b/methods/http.cc
index 5f0dc03d91142f3c880e6538a6d7f675548a3512..71a02e53a062e3a7bae2f22dd63dbfea34bdf2c0 100644 (file)
--- a/methods/http.cc
+++ b/methods/http.cc
@@ -58,15 +58,6 @@
                                                                        /*}}}*/
 using namespace std;
 
                                                                        /*}}}*/
 using namespace std;
 

-string HttpMethod::FailFile;
-int HttpMethod::FailFd = -1;
-time_t HttpMethod::FailTime = 0;
-unsigned long PipelineDepth = 0;
-unsigned long TimeOut = 120;
-bool AllowRedirect = false;
-bool Debug = false;
-URI Proxy;
-

 unsigned long long CircleBuf::BwReadLimit=0;
 unsigned long long CircleBuf::BwTickReadData=0;
 struct timeval CircleBuf::BwReadTick={0,0};
 unsigned long long CircleBuf::BwReadLimit=0;
 unsigned long long CircleBuf::BwTickReadData=0;
 struct timeval CircleBuf::BwReadTick={0,0};


@@ -296,20 +287,17 @@ CircleBuf::~CircleBuf()
    delete Hash;
 }
 
    delete Hash;
 }
 

-// ServerState::ServerState - Constructor                              /*{{{*/
-// ---------------------------------------------------------------------
-/* */
-ServerState::ServerState(URI Srv,HttpMethod *Owner) : Owner(Owner),
-                        In(64*1024), Out(4*1024),
-                        ServerName(Srv)
+// HttpServerState::HttpServerState - Constructor                      /*{{{*/
+HttpServerState::HttpServerState(URI Srv,HttpMethod *Owner) : ServerState(Srv, Owner), In(64*1024), Out(4*1024)

 {
 {

+   TimeOut = _config->FindI("Acquire::http::Timeout",TimeOut);

    Reset();
 }
                                                                        /*}}}*/
    Reset();
 }
                                                                        /*}}}*/

-// ServerState::Open - Open a connection to the server                 /*{{{*/
+// HttpServerState::Open - Open a connection to the server             /*{{{*/

 // ---------------------------------------------------------------------
 /* This opens a connection to the server. */
 // ---------------------------------------------------------------------
 /* This opens a connection to the server. */

-bool ServerState::Open()
+bool HttpServerState::Open()

 {
    // Use the already open connection if possible.
    if (ServerFd != -1)
 {
    // Use the already open connection if possible.
    if (ServerFd != -1)


@@ -373,72 +361,18 @@ bool ServerState::Open()
    return true;
 }
                                                                        /*}}}*/
    return true;
 }
                                                                        /*}}}*/

-// ServerState::Close - Close a connection to the server               /*{{{*/
+// HttpServerState::Close - Close a connection to the server           /*{{{*/

 // ---------------------------------------------------------------------
 /* */
 // ---------------------------------------------------------------------
 /* */

-bool ServerState::Close()
+bool HttpServerState::Close()

 {
    close(ServerFd);
    ServerFd = -1;
    return true;
 }
                                                                        /*}}}*/
 {
    close(ServerFd);
    ServerFd = -1;
    return true;
 }
                                                                        /*}}}*/

-// ServerState::RunHeaders - Get the headers before the data           /*{{{*/
-// ---------------------------------------------------------------------
-/* Returns 0 if things are OK, 1 if an IO error occurred and 2 if a header
-   parse error occurred */
-ServerState::RunHeadersResult ServerState::RunHeaders()
-{
-   State = Header;
-   
-   Owner->Status(_("Waiting for headers"));
-
-   Major = 0; 
-   Minor = 0; 
-   Result = 0; 
-   Size = 0; 
-   StartPos = 0;
-   Encoding = Closes;
-   HaveContent = false;
-   time(&Date);
-
-   do
-   {
-      string Data;
-      if (In.WriteTillEl(Data) == false)
-        continue;
-
-      if (Debug == true)
-        clog << Data;
-      
-      for (string::const_iterator I = Data.begin(); I < Data.end(); ++I)
-      {
-        string::const_iterator J = I;
-        for (; J != Data.end() && *J != '\n' && *J != '\r'; ++J);
-        if (HeaderLine(string(I,J)) == false)
-           return RUN_HEADERS_PARSE_ERROR;
-        I = J;
-      }
-
-      // 100 Continue is a Nop...
-      if (Result == 100)
-        continue;
-      
-      // Tidy up the connection persistance state.
-      if (Encoding == Closes && HaveContent == true)
-        Persistent = false;
-      
-      return RUN_HEADERS_OK;
-   }
-   while (Owner->Go(false,this) == true);
-   
-   return RUN_HEADERS_IO_ERROR;
-}
-                                                                       /*}}}*/
-// ServerState::RunData - Transfer the data from the socket            /*{{{*/
-// ---------------------------------------------------------------------
-/* */
-bool ServerState::RunData()
+// HttpServerState::RunData - Transfer the data from the socket                /*{{{*/
+bool HttpServerState::RunData(FileFd * const File)

 {
    State = Data;
    
 {
    State = Data;
    


@@ -456,7 +390,7 @@ bool ServerState::RunData()
            if (In.WriteTillEl(Data,true) == true)
               break;
         }
            if (In.WriteTillEl(Data,true) == true)
               break;
         }

-        while ((Last = Owner->Go(false,this)) == true);
+        while ((Last = Go(false, File)) == true);

 
         if (Last == false)
            return false;
 
         if (Last == false)
            return false;


@@ -474,7 +408,7 @@ bool ServerState::RunData()
               if (In.WriteTillEl(Data,true) == true && Data.length() <= 2)
                  break;
            }
               if (In.WriteTillEl(Data,true) == true && Data.length() <= 2)
                  break;
            }

-           while ((Last = Owner->Go(false,this)) == true);
+           while ((Last = Go(false, File)) == true);

            if (Last == false)
               return false;
            return !_error->PendingError();
            if (Last == false)
               return false;
            return !_error->PendingError();


@@ -482,7 +416,7 @@ bool ServerState::RunData()
         
         // Transfer the block
         In.Limit(Len);
         
         // Transfer the block
         In.Limit(Len);

-        while (Owner->Go(true,this) == true)
+        while (Go(true, File) == true)

            if (In.IsLimit() == true)
               break;
         
            if (In.IsLimit() == true)
               break;
         


@@ -498,7 +432,7 @@ bool ServerState::RunData()
            if (In.WriteTillEl(Data,true) == true)
               break;
         }
            if (In.WriteTillEl(Data,true) == true)
               break;
         }

-        while ((Last = Owner->Go(false,this)) == true);
+        while ((Last = Go(false, File)) == true);

         if (Last == false)
            return false;
       }
         if (Last == false)
            return false;
       }


@@ -521,147 +455,217 @@ bool ServerState::RunData()
         In.Limit(-1);
         return !_error->PendingError();
       }
         In.Limit(-1);
         return !_error->PendingError();
       }

-      while (Owner->Go(true,this) == true);
+      while (Go(true, File) == true);

    }
 
    }
 

-   return Owner->Flush(this) && !_error->PendingError();
+   return Owner->Flush() && !_error->PendingError();

 }
                                                                        /*}}}*/
 }
                                                                        /*}}}*/

-// ServerState::HeaderLine - Process a header line                     /*{{{*/
-// ---------------------------------------------------------------------
-/* */
-bool ServerState::HeaderLine(string Line)
+bool HttpServerState::ReadHeaderLines(std::string &Data)               /*{{{*/

 {
 {

-   if (Line.empty() == true)
-      return true;
+   return In.WriteTillEl(Data);
+}
+                                                                       /*}}}*/
+bool HttpServerState::LoadNextResponse(bool const ToFile, FileFd * const File)/*{{{*/
+{
+   return Go(ToFile, File);
+}
+                                                                       /*}}}*/
+bool HttpServerState::WriteResponse(const std::string &Data)           /*{{{*/
+{
+   return Out.Read(Data);
+}
+                                                                       /*}}}*/
+bool HttpServerState::IsOpen()                                         /*{{{*/
+{
+   return (ServerFd != -1);
+}
+                                                                       /*}}}*/
+bool HttpServerState::InitHashes(FileFd &File)                         /*{{{*/
+{
+   delete In.Hash;
+   In.Hash = new Hashes;

 
 

-   string::size_type Pos = Line.find(' ');
-   if (Pos == string::npos || Pos+1 > Line.length())
+   // Set the expected size and read file for the hashes
+   if (StartPos >= 0)

    {
    {

-      // Blah, some servers use "connection:closes", evil.
-      Pos = Line.find(':');
-      if (Pos == string::npos || Pos + 2 > Line.length())
-        return _error->Error(_("Bad header line"));
-      Pos++;
+      File.Truncate(StartPos);
+
+      return In.Hash->AddFD(File, StartPos);

    }
    }

+   return true;
+}
+                                                                       /*}}}*/
+Hashes * HttpServerState::GetHashes()                                  /*{{{*/
+{
+   return In.Hash;
+}
+                                                                       /*}}}*/
+// HttpServerState::Die - The server has closed the connection.                /*{{{*/
+bool HttpServerState::Die(FileFd &File)
+{
+   unsigned int LErrno = errno;

 
 

-   // Parse off any trailing spaces between the : and the next word.
-   string::size_type Pos2 = Pos;
-   while (Pos2 < Line.length() && isspace(Line[Pos2]) != 0)
-      Pos2++;
-      
-   string Tag = string(Line,0,Pos);
-   string Val = string(Line,Pos2);
-   
-   if (stringcasecmp(Tag.c_str(),Tag.c_str()+4,"HTTP") == 0)
+   // Dump the buffer to the file
+   if (State == ServerState::Data)

    {
    {

-      // Evil servers return no version
-      if (Line[4] == '/')
-      {
-        int const elements = sscanf(Line.c_str(),"HTTP/%3u.%3u %3u%359[^\n]",&Major,&Minor,&Result,Code);
-        if (elements == 3)
-        {
-           Code[0] = '\0';
-           if (Debug == true)
-              clog << "HTTP server doesn't give Reason-Phrase for " << Result << std::endl;
-        }
-        else if (elements != 4)
-           return _error->Error(_("The HTTP server sent an invalid reply header"));
-      }
-      else
+      // on GNU/kFreeBSD, apt dies on /dev/null because non-blocking
+      // can't be set
+      if (File.Name() != "/dev/null")
+        SetNonBlock(File.Fd(),false);
+      while (In.WriteSpace() == true)

       {
       {

-        Major = 0;
-        Minor = 9;
-        if (sscanf(Line.c_str(),"HTTP %3u%359[^\n]",&Result,Code) != 2)
-           return _error->Error(_("The HTTP server sent an invalid reply header"));
-      }
+        if (In.Write(File.Fd()) == false)
+           return _error->Errno("write",_("Error writing to the file"));

 
 

-      /* Check the HTTP response header to get the default persistance
-         state. */
-      if (Major < 1)
-        Persistent = false;
-      else
-      {
-        if (Major == 1 && Minor == 0)
-           Persistent = false;
-        else
-           Persistent = true;
+        // Done
+        if (In.IsLimit() == true)
+           return true;

       }
       }

+   }

 
 

-      return true;
-   }      
-      
-   if (stringcasecmp(Tag,"Content-Length:") == 0)
+   // See if this is because the server finished the data stream
+   if (In.IsLimit() == false && State != HttpServerState::Header &&
+       Encoding != HttpServerState::Closes)

    {
    {

-      if (Encoding == Closes)
-        Encoding = Stream;
-      HaveContent = true;
-      
-      // The length is already set from the Content-Range header
-      if (StartPos != 0)
-        return true;
-
-      Size = strtoull(Val.c_str(), NULL, 10);
-      if (Size >= std::numeric_limits<unsigned long long>::max())
-        return _error->Errno("HeaderLine", _("The HTTP server sent an invalid Content-Length header"));
-      else if (Size == 0)
-        HaveContent = false;
-      return true;
+      Close();
+      if (LErrno == 0)
+        return _error->Error(_("Error reading from server. Remote end closed connection"));
+      errno = LErrno;
+      return _error->Errno("read",_("Error reading from server"));

    }
    }

-
-   if (stringcasecmp(Tag,"Content-Type:") == 0)
+   else

    {
    {

-      HaveContent = true;
+      In.Limit(-1);
+
+      // Nothing left in the buffer
+      if (In.WriteSpace() == false)
+        return false;
+
+      // We may have got multiple responses back in one packet..
+      Close();

       return true;
    }
       return true;
    }

-   
-   if (stringcasecmp(Tag,"Content-Range:") == 0)
-   {
-      HaveContent = true;

 
 

-      // §14.16 says 'byte-range-resp-spec' should be a '*' in case of 416
-      if (Result == 416 && sscanf(Val.c_str(), "bytes */%llu",&Size) == 1)
+   return false;
+}
+                                                                       /*}}}*/
+// HttpServerState::Flush - Dump the buffer into the file              /*{{{*/
+// ---------------------------------------------------------------------
+/* This takes the current input buffer from the Server FD and writes it
+   into the file */
+bool HttpServerState::Flush(FileFd * const File)
+{
+   if (File != NULL)
+   {
+      // on GNU/kFreeBSD, apt dies on /dev/null because non-blocking
+      // can't be set
+      if (File->Name() != "/dev/null")
+        SetNonBlock(File->Fd(),false);
+      if (In.WriteSpace() == false)
+        return true;
+      
+      while (In.WriteSpace() == true)

       {
       {

-        StartPos = 1; // ignore Content-Length, it would override Size
-        HaveContent = false;
+        if (In.Write(File->Fd()) == false)
+           return _error->Errno("write",_("Error writing to file"));
+        if (In.IsLimit() == true)
+           return true;

       }
       }

-      else if (sscanf(Val.c_str(),"bytes %llu-%*u/%llu",&StartPos,&Size) != 2)
-        return _error->Error(_("The HTTP server sent an invalid Content-Range header"));
-      if ((unsigned long long)StartPos > Size)
-        return _error->Error(_("This HTTP server has broken range support"));
-      return true;
+
+      if (In.IsLimit() == true || Encoding == ServerState::Closes)
+        return true;

    }
    }

+   return false;
+}
+                                                                       /*}}}*/
+// HttpServerState::Go - Run a single loop                             /*{{{*/
+// ---------------------------------------------------------------------
+/* This runs the select loop over the server FDs, Output file FDs and
+   stdin. */
+bool HttpServerState::Go(bool ToFile, FileFd * const File)
+{
+   // Server has closed the connection
+   if (ServerFd == -1 && (In.WriteSpace() == false || 
+                              ToFile == false))
+      return false;
+   
+   fd_set rfds,wfds;
+   FD_ZERO(&rfds);
+   FD_ZERO(&wfds);
+   
+   /* Add the server. We only send more requests if the connection will 
+      be persisting */
+   if (Out.WriteSpace() == true && ServerFd != -1 
+       && Persistent == true)
+      FD_SET(ServerFd,&wfds);
+   if (In.ReadSpace() == true && ServerFd != -1)
+      FD_SET(ServerFd,&rfds);
+   
+   // Add the file
+   int FileFD = -1;
+   if (File != NULL)
+      FileFD = File->Fd();

    
    

-   if (stringcasecmp(Tag,"Transfer-Encoding:") == 0)
+   if (In.WriteSpace() == true && ToFile == true && FileFD != -1)
+      FD_SET(FileFD,&wfds);
+
+   // Add stdin
+   if (_config->FindB("Acquire::http::DependOnSTDIN", true) == true)
+      FD_SET(STDIN_FILENO,&rfds);
+         
+   // Figure out the max fd
+   int MaxFd = FileFD;
+   if (MaxFd < ServerFd)
+      MaxFd = ServerFd;
+
+   // Select
+   struct timeval tv;
+   tv.tv_sec = TimeOut;
+   tv.tv_usec = 0;
+   int Res = 0;
+   if ((Res = select(MaxFd+1,&rfds,&wfds,0,&tv)) < 0)

    {
    {

-      HaveContent = true;
-      if (stringcasecmp(Val,"chunked") == 0)
-        Encoding = Chunked;      
-      return true;
+      if (errno == EINTR)
+        return true;
+      return _error->Errno("select",_("Select failed"));

    }
    }

-
-   if (stringcasecmp(Tag,"Connection:") == 0)
+   
+   if (Res == 0)

    {
    {

-      if (stringcasecmp(Val,"close") == 0)
-        Persistent = false;
-      if (stringcasecmp(Val,"keep-alive") == 0)
-        Persistent = true;
-      return true;
+      _error->Error(_("Connection timed out"));
+      return Die(*File);

    }
    
    }
    

-   if (stringcasecmp(Tag,"Last-Modified:") == 0)
+   // Handle server IO
+   if (ServerFd != -1 && FD_ISSET(ServerFd,&rfds))

    {
    {

-      if (RFC1123StrToTime(Val.c_str(), Date) == false)
-        return _error->Error(_("Unknown date format"));
-      return true;
+      errno = 0;
+      if (In.Read(ServerFd) == false)
+        return Die(*File);
+   }
+        
+   if (ServerFd != -1 && FD_ISSET(ServerFd,&wfds))
+   {
+      errno = 0;
+      if (Out.Write(ServerFd) == false)
+        return Die(*File);

    }
 
    }
 

-   if (stringcasecmp(Tag,"Location:") == 0)
+   // Send data to the file
+   if (FileFD != -1 && FD_ISSET(FileFD,&wfds))

    {
    {

-      Location = Val;
-      return true;
+      if (In.Write(FileFD) == false)
+        return _error->Errno("write",_("Error writing to output file"));

    }
 
    }
 

+   // Handle commands from APT
+   if (FD_ISSET(STDIN_FILENO,&rfds))
+   {
+      if (Owner->Run(true) != -1)
+        exit(100);
+   }   
+       

    return true;
 }
                                                                        /*}}}*/
    return true;
 }
                                                                        /*}}}*/


@@ -669,7 +673,7 @@ bool ServerState::HeaderLine(string Line)
 // HttpMethod::SendReq - Send the HTTP request                         /*{{{*/
 // ---------------------------------------------------------------------
 /* This places the http request in the outbound buffer */
 // HttpMethod::SendReq - Send the HTTP request                         /*{{{*/
 // ---------------------------------------------------------------------
 /* This places the http request in the outbound buffer */

-void HttpMethod::SendReq(FetchItem *Itm,CircleBuf &Out)
+void HttpMethod::SendReq(FetchItem *Itm)

 {
    URI Uri = Itm->Uri;
 
 {
    URI Uri = Itm->Uri;
 


@@ -695,7 +699,7 @@ void HttpMethod::SendReq(FetchItem *Itm,CircleBuf &Out)
       but while its a must for all servers to accept absolute URIs,
       it is assumed clients will sent an absolute path for non-proxies */
    std::string requesturi;
       but while its a must for all servers to accept absolute URIs,
       it is assumed clients will sent an absolute path for non-proxies */
    std::string requesturi;

-   if (Proxy.empty() == true || Proxy.Host.empty())
+   if (Server->Proxy.empty() == true || Server->Proxy.Host.empty())

       requesturi = Uri.Path;
    else
       requesturi = Itm->Uri;
       requesturi = Uri.Path;
    else
       requesturi = Itm->Uri;


@@ -763,9 +767,9 @@ void HttpMethod::SendReq(FetchItem *Itm,CircleBuf &Out)
       }
    }
 
       }
    }
 

-   if (Proxy.User.empty() == false || Proxy.Password.empty() == false)
+   if (Server->Proxy.User.empty() == false || Server->Proxy.Password.empty() == false)

       Req += string("Proxy-Authorization: Basic ") + 
       Req += string("Proxy-Authorization: Basic ") + 

-          Base64Encode(Proxy.User + ":" + Proxy.Password) + "\r\n";
+          Base64Encode(Server->Proxy.User + ":" + Server->Proxy.Password) + "\r\n";

 
    maybe_add_auth (Uri, _config->FindFile("Dir::Etc::netrc"));
    if (Uri.User.empty() == false || Uri.Password.empty() == false)
 
    maybe_add_auth (Uri, _config->FindFile("Dir::Etc::netrc"));
    if (Uri.User.empty() == false || Uri.Password.empty() == false)


@@ -779,360 +783,18 @@ void HttpMethod::SendReq(FetchItem *Itm,CircleBuf &Out)
    if (Debug == true)
       cerr << Req << endl;
 
    if (Debug == true)
       cerr << Req << endl;
 

-   Out.Read(Req);
+   Server->WriteResponse(Req);

 }
                                                                        /*}}}*/
 }
                                                                        /*}}}*/

-// HttpMethod::Go - Run a single loop                                  /*{{{*/
-// ---------------------------------------------------------------------
-/* This runs the select loop over the server FDs, Output file FDs and
-   stdin. */
-bool HttpMethod::Go(bool ToFile,ServerState *Srv)
-{
-   // Server has closed the connection
-   if (Srv->ServerFd == -1 && (Srv->In.WriteSpace() == false || 
-                              ToFile == false))
-      return false;
-   
-   fd_set rfds,wfds;
-   FD_ZERO(&rfds);
-   FD_ZERO(&wfds);
-   
-   /* Add the server. We only send more requests if the connection will 
-      be persisting */
-   if (Srv->Out.WriteSpace() == true && Srv->ServerFd != -1 
-       && Srv->Persistent == true)
-      FD_SET(Srv->ServerFd,&wfds);
-   if (Srv->In.ReadSpace() == true && Srv->ServerFd != -1)
-      FD_SET(Srv->ServerFd,&rfds);
-   
-   // Add the file
-   int FileFD = -1;
-   if (File != 0)
-      FileFD = File->Fd();
-   
-   if (Srv->In.WriteSpace() == true && ToFile == true && FileFD != -1)
-      FD_SET(FileFD,&wfds);
-
-   // Add stdin
-   if (_config->FindB("Acquire::http::DependOnSTDIN", true) == true)
-      FD_SET(STDIN_FILENO,&rfds);
-         
-   // Figure out the max fd
-   int MaxFd = FileFD;
-   if (MaxFd < Srv->ServerFd)
-      MaxFd = Srv->ServerFd;
-
-   // Select
-   struct timeval tv;
-   tv.tv_sec = TimeOut;
-   tv.tv_usec = 0;
-   int Res = 0;
-   if ((Res = select(MaxFd+1,&rfds,&wfds,0,&tv)) < 0)
-   {
-      if (errno == EINTR)
-        return true;
-      return _error->Errno("select",_("Select failed"));
-   }
-   
-   if (Res == 0)
-   {
-      _error->Error(_("Connection timed out"));
-      return ServerDie(Srv);
-   }
-   
-   // Handle server IO
-   if (Srv->ServerFd != -1 && FD_ISSET(Srv->ServerFd,&rfds))
-   {
-      errno = 0;
-      if (Srv->In.Read(Srv->ServerFd) == false)
-        return ServerDie(Srv);
-   }
-        
-   if (Srv->ServerFd != -1 && FD_ISSET(Srv->ServerFd,&wfds))
-   {
-      errno = 0;
-      if (Srv->Out.Write(Srv->ServerFd) == false)
-        return ServerDie(Srv);
-   }
-
-   // Send data to the file
-   if (FileFD != -1 && FD_ISSET(FileFD,&wfds))
-   {
-      if (Srv->In.Write(FileFD) == false)
-        return _error->Errno("write",_("Error writing to output file"));
-   }
-
-   // Handle commands from APT
-   if (FD_ISSET(STDIN_FILENO,&rfds))
-   {
-      if (Run(true) != -1)
-        exit(100);
-   }   
-       
-   return true;
-}
-                                                                       /*}}}*/
-// HttpMethod::Flush - Dump the buffer into the file                   /*{{{*/
-// ---------------------------------------------------------------------
-/* This takes the current input buffer from the Server FD and writes it
-   into the file */
-bool HttpMethod::Flush(ServerState *Srv)
-{
-   if (File != 0)
-   {
-      // on GNU/kFreeBSD, apt dies on /dev/null because non-blocking
-      // can't be set
-      if (File->Name() != "/dev/null")
-        SetNonBlock(File->Fd(),false);
-      if (Srv->In.WriteSpace() == false)
-        return true;
-      
-      while (Srv->In.WriteSpace() == true)
-      {
-        if (Srv->In.Write(File->Fd()) == false)
-           return _error->Errno("write",_("Error writing to file"));
-        if (Srv->In.IsLimit() == true)
-           return true;
-      }
-
-      if (Srv->In.IsLimit() == true || Srv->Encoding == ServerState::Closes)
-        return true;
-   }
-   return false;
-}
-                                                                       /*}}}*/
-// HttpMethod::ServerDie - The server has closed the connection.       /*{{{*/
-// ---------------------------------------------------------------------
-/* */
-bool HttpMethod::ServerDie(ServerState *Srv)
-{
-   unsigned int LErrno = errno;
-   
-   // Dump the buffer to the file
-   if (Srv->State == ServerState::Data)
-   {
-      // on GNU/kFreeBSD, apt dies on /dev/null because non-blocking
-      // can't be set
-      if (File->Name() != "/dev/null")
-        SetNonBlock(File->Fd(),false);
-      while (Srv->In.WriteSpace() == true)
-      {
-        if (Srv->In.Write(File->Fd()) == false)
-           return _error->Errno("write",_("Error writing to the file"));
-
-        // Done
-        if (Srv->In.IsLimit() == true)
-           return true;
-      }
-   }
-   
-   // See if this is because the server finished the data stream
-   if (Srv->In.IsLimit() == false && Srv->State != ServerState::Header && 
-       Srv->Encoding != ServerState::Closes)
-   {
-      Srv->Close();
-      if (LErrno == 0)
-        return _error->Error(_("Error reading from server. Remote end closed connection"));
-      errno = LErrno;
-      return _error->Errno("read",_("Error reading from server"));
-   }
-   else
-   {
-      Srv->In.Limit(-1);
-
-      // Nothing left in the buffer
-      if (Srv->In.WriteSpace() == false)
-        return false;
-      
-      // We may have got multiple responses back in one packet..
-      Srv->Close();
-      return true;
-   }
-   
-   return false;
-}
-                                                                       /*}}}*/
-// HttpMethod::DealWithHeaders - Handle the retrieved header data      /*{{{*/
-// ---------------------------------------------------------------------
-/* We look at the header data we got back from the server and decide what
-   to do. Returns DealWithHeadersResult (see http.h for details).
- */
-HttpMethod::DealWithHeadersResult
-HttpMethod::DealWithHeaders(FetchResult &Res,ServerState *Srv)
-{
-   // Not Modified
-   if (Srv->Result == 304)
-   {
-      unlink(Queue->DestFile.c_str());
-      Res.IMSHit = true;
-      Res.LastModified = Queue->LastModified;
-      return IMS_HIT;
-   }
-   
-   /* Redirect
-    *
-    * Note that it is only OK for us to treat all redirection the same
-    * because we *always* use GET, not other HTTP methods.  There are
-    * three redirection codes for which it is not appropriate that we
-    * redirect.  Pass on those codes so the error handling kicks in.
-    */
-   if (AllowRedirect
-       && (Srv->Result > 300 && Srv->Result < 400)
-       && (Srv->Result != 300       // Multiple Choices
-           && Srv->Result != 304    // Not Modified
-           && Srv->Result != 306))  // (Not part of HTTP/1.1, reserved)
-   {
-      if (Srv->Location.empty() == true);
-      else if (Srv->Location[0] == '/' && Queue->Uri.empty() == false)
-      {
-        URI Uri = Queue->Uri;
-        if (Uri.Host.empty() == false)
-            NextURI = URI::SiteOnly(Uri);
-        else
-           NextURI.clear();
-        NextURI.append(DeQuoteString(Srv->Location));
-        return TRY_AGAIN_OR_REDIRECT;
-      }
-      else
-      {
-         NextURI = DeQuoteString(Srv->Location);
-         URI tmpURI = NextURI;
-         // Do not allow a redirection to switch protocol
-         if (tmpURI.Access == "http")
-            return TRY_AGAIN_OR_REDIRECT;
-      }
-      /* else pass through for error message */
-   }
-   // retry after an invalid range response without partial data
-   else if (Srv->Result == 416)
-   {
-      struct stat SBuf;
-      if (stat(Queue->DestFile.c_str(),&SBuf) >= 0 && SBuf.st_size > 0)
-      {
-        if ((unsigned long long)SBuf.st_size == Srv->Size)
-        {
-           // the file is completely downloaded, but was not moved
-           Srv->StartPos = Srv->Size;
-           Srv->Result = 200;
-           Srv->HaveContent = false;
-        }
-        else if (unlink(Queue->DestFile.c_str()) == 0)
-        {
-           NextURI = Queue->Uri;
-           return TRY_AGAIN_OR_REDIRECT;
-        }
-      }
-   }
- 
-   /* We have a reply we dont handle. This should indicate a perm server
-      failure */
-   if (Srv->Result < 200 || Srv->Result >= 300)
-   {
-      char err[255];
-      snprintf(err,sizeof(err)-1,"HttpError%i",Srv->Result);
-      SetFailReason(err);
-      _error->Error("%u %s",Srv->Result,Srv->Code);
-      if (Srv->HaveContent == true)
-        return ERROR_WITH_CONTENT_PAGE;
-      return ERROR_UNRECOVERABLE;
-   }
-
-   // This is some sort of 2xx 'data follows' reply
-   Res.LastModified = Srv->Date;
-   Res.Size = Srv->Size;
-   
-   // Open the file
-   delete File;
-   File = new FileFd(Queue->DestFile,FileFd::WriteAny);
-   if (_error->PendingError() == true)
-      return ERROR_NOT_FROM_SERVER;
-
-   FailFile = Queue->DestFile;
-   FailFile.c_str();   // Make sure we dont do a malloc in the signal handler
-   FailFd = File->Fd();
-   FailTime = Srv->Date;
-
-   delete Srv->In.Hash;
-   Srv->In.Hash = new Hashes;
-
-   // Set the expected size and read file for the hashes
-   if (Srv->StartPos >= 0)
-   {
-      Res.ResumePoint = Srv->StartPos;
-      File->Truncate(Srv->StartPos);
-
-      if (Srv->In.Hash->AddFD(*File,Srv->StartPos) == false)
-      {
-        _error->Errno("read",_("Problem hashing file"));
-        return ERROR_NOT_FROM_SERVER;
-      }
-   }
-   
-   SetNonBlock(File->Fd(),true);
-   return FILE_IS_OPEN;
-}
-                                                                       /*}}}*/
-// HttpMethod::SigTerm - Handle a fatal signal                         /*{{{*/
-// ---------------------------------------------------------------------
-/* This closes and timestamps the open file. This is neccessary to get 
-   resume behavoir on user abort */
-void HttpMethod::SigTerm(int)
-{
-   if (FailFd == -1)
-      _exit(100);
-   close(FailFd);
-   
-   // Timestamp
-   struct utimbuf UBuf;
-   UBuf.actime = FailTime;
-   UBuf.modtime = FailTime;
-   utime(FailFile.c_str(),&UBuf);
-   
-   _exit(100);
-}
-                                                                       /*}}}*/
-// HttpMethod::Fetch - Fetch an item                                   /*{{{*/
-// ---------------------------------------------------------------------
-/* This adds an item to the pipeline. We keep the pipeline at a fixed
-   depth. */
-bool HttpMethod::Fetch(FetchItem *)
-{
-   if (Server == 0)
-      return true;
-
-   // Queue the requests
-   int Depth = -1;
-   for (FetchItem *I = Queue; I != 0 && Depth < (signed)PipelineDepth; 
-       I = I->Next, Depth++)
-   {
-      // If pipelining is disabled, we only queue 1 request
-      if (Server->Pipeline == false && Depth >= 0)
-        break;
-      
-      // Make sure we stick with the same server
-      if (Server->Comp(I->Uri) == false)
-        break;
-      if (QueueBack == I)
-      {
-        QueueBack = I->Next;
-        SendReq(I,Server->Out);
-        continue;
-      }
-   }
-   
-   return true;
-};
-                                                                       /*}}}*/

 // HttpMethod::Configuration - Handle a configuration message          /*{{{*/
 // ---------------------------------------------------------------------
 /* We stash the desired pipeline depth */
 bool HttpMethod::Configuration(string Message)
 {
 // HttpMethod::Configuration - Handle a configuration message          /*{{{*/
 // ---------------------------------------------------------------------
 /* We stash the desired pipeline depth */
 bool HttpMethod::Configuration(string Message)
 {

-   if (pkgAcqMethod::Configuration(Message) == false)
+   if (ServerMethod::Configuration(Message) == false)

       return false;
       return false;

-   
+

    AllowRedirect = _config->FindB("Acquire::http::AllowRedirect",true);
    AllowRedirect = _config->FindB("Acquire::http::AllowRedirect",true);

-   TimeOut = _config->FindI("Acquire::http::Timeout",TimeOut);

    PipelineDepth = _config->FindI("Acquire::http::Pipeline-Depth",
                                  PipelineDepth);
    Debug = _config->FindB("Debug::Acquire::http",false);
    PipelineDepth = _config->FindI("Acquire::http::Pipeline-Depth",
                                  PipelineDepth);
    Debug = _config->FindB("Debug::Acquire::http",false);


@@ -1144,260 +806,6 @@ bool HttpMethod::Configuration(string Message)
    return true;
 }
                                                                        /*}}}*/
    return true;
 }
                                                                        /*}}}*/

-// HttpMethod::Loop - Main loop                                                /*{{{*/
-// ---------------------------------------------------------------------
-/* */
-int HttpMethod::Loop()
-{
-   typedef vector<string> StringVector;
-   typedef vector<string>::iterator StringVectorIterator;
-   map<string, StringVector> Redirected;
-
-   signal(SIGTERM,SigTerm);
-   signal(SIGINT,SigTerm);
-   
-   Server = 0;
-   
-   int FailCounter = 0;
-   while (1)
-   {      
-      // We have no commands, wait for some to arrive
-      if (Queue == 0)
-      {
-        if (WaitFd(STDIN_FILENO) == false)
-           return 0;
-      }
-      
-      /* Run messages, we can accept 0 (no message) if we didn't
-         do a WaitFd above.. Otherwise the FD is closed. */
-      int Result = Run(true);
-      if (Result != -1 && (Result != 0 || Queue == 0))
-      {
-        if(FailReason.empty() == false ||
-           _config->FindB("Acquire::http::DependOnSTDIN", true) == true)
-           return 100;
-        else
-           return 0;
-      }
-
-      if (Queue == 0)
-        continue;
-      
-      // Connect to the server
-      if (Server == 0 || Server->Comp(Queue->Uri) == false)
-      {
-        delete Server;
-        Server = new ServerState(Queue->Uri,this);
-      }
-      /* If the server has explicitly said this is the last connection
-         then we pre-emptively shut down the pipeline and tear down 
-        the connection. This will speed up HTTP/1.0 servers a tad
-        since we don't have to wait for the close sequence to
-         complete */
-      if (Server->Persistent == false)
-        Server->Close();
-      
-      // Reset the pipeline
-      if (Server->ServerFd == -1)
-        QueueBack = Queue;      
-        
-      // Connnect to the host
-      if (Server->Open() == false)
-      {
-        Fail(true);
-        delete Server;
-        Server = 0;
-        continue;
-      }
-
-      // Fill the pipeline.
-      Fetch(0);
-      
-      // Fetch the next URL header data from the server.
-      switch (Server->RunHeaders())
-      {
-        case ServerState::RUN_HEADERS_OK:
-        break;
-        
-        // The header data is bad
-        case ServerState::RUN_HEADERS_PARSE_ERROR:
-        {
-           _error->Error(_("Bad header data"));
-           Fail(true);
-           RotateDNS();
-           continue;
-        }
-        
-        // The server closed a connection during the header get..
-        default:
-        case ServerState::RUN_HEADERS_IO_ERROR:
-        {
-           FailCounter++;
-           _error->Discard();
-           Server->Close();
-           Server->Pipeline = false;
-           
-           if (FailCounter >= 2)
-           {
-              Fail(_("Connection failed"),true);
-              FailCounter = 0;
-           }
-           
-           RotateDNS();
-           continue;
-        }
-      };
-
-      // Decide what to do.
-      FetchResult Res;
-      Res.Filename = Queue->DestFile;
-      switch (DealWithHeaders(Res,Server))
-      {
-        // Ok, the file is Open
-        case FILE_IS_OPEN:
-        {
-           URIStart(Res);
-
-           // Run the data
-           bool Result = true;
-            if (Server->HaveContent)
-              Result = Server->RunData();
-
-           /* If the server is sending back sizeless responses then fill in
-              the size now */
-           if (Res.Size == 0)
-              Res.Size = File->Size();
-           
-           // Close the file, destroy the FD object and timestamp it
-           FailFd = -1;
-           delete File;
-           File = 0;
-           
-           // Timestamp
-           struct utimbuf UBuf;
-           time(&UBuf.actime);
-           UBuf.actime = Server->Date;
-           UBuf.modtime = Server->Date;
-           utime(Queue->DestFile.c_str(),&UBuf);
-
-           // Send status to APT
-           if (Result == true)
-           {
-              Res.TakeHashes(*Server->In.Hash);
-              URIDone(Res);
-           }
-           else
-           {
-              if (Server->ServerFd == -1)
-              {
-                 FailCounter++;
-                 _error->Discard();
-                 Server->Close();
-                 
-                 if (FailCounter >= 2)
-                 {
-                    Fail(_("Connection failed"),true);
-                    FailCounter = 0;
-                 }
-                 
-                 QueueBack = Queue;
-              }
-              else
-                 Fail(true);
-           }
-           break;
-        }
-        
-        // IMS hit
-        case IMS_HIT:
-        {
-           URIDone(Res);
-           break;
-        }
-        
-        // Hard server error, not found or something
-        case ERROR_UNRECOVERABLE:
-        {
-           Fail();
-           break;
-        }
-         
-        // Hard internal error, kill the connection and fail
-        case ERROR_NOT_FROM_SERVER:
-        {
-           delete File;
-           File = 0;
-
-           Fail();
-           RotateDNS();
-           Server->Close();
-           break;
-        }
-
-        // We need to flush the data, the header is like a 404 w/ error text
-        case ERROR_WITH_CONTENT_PAGE:
-        {
-           Fail();
-           
-           // Send to content to dev/null
-           File = new FileFd("/dev/null",FileFd::WriteExists);
-           Server->RunData();
-           delete File;
-           File = 0;
-           break;
-        }
-        
-         // Try again with a new URL
-         case TRY_AGAIN_OR_REDIRECT:
-         {
-            // Clear rest of response if there is content
-            if (Server->HaveContent)
-            {
-               File = new FileFd("/dev/null",FileFd::WriteExists);
-               Server->RunData();
-               delete File;
-               File = 0;
-            }
-
-            /* Detect redirect loops.  No more redirects are allowed
-               after the same URI is seen twice in a queue item. */
-            StringVector &R = Redirected[Queue->DestFile];
-            bool StopRedirects = false;
-            if (R.empty() == true)
-               R.push_back(Queue->Uri);
-            else if (R[0] == "STOP" || R.size() > 10)
-               StopRedirects = true;
-            else
-            {
-               for (StringVectorIterator I = R.begin(); I != R.end(); ++I)
-                  if (Queue->Uri == *I)
-                  {
-                     R[0] = "STOP";
-                     break;
-                  }
- 
-               R.push_back(Queue->Uri);
-            }
- 
-            if (StopRedirects == false)
-               Redirect(NextURI);
-            else
-               Fail();
- 
-            break;
-         }
-
-        default:
-        Fail(_("Internal error"));
-        break;
-      }
-      
-      FailCounter = 0;
-   }
-   
-   return 0;
-}
-                                                                       /*}}}*/

 // HttpMethod::AutoDetectProxy - auto detect proxy                     /*{{{*/
 // ---------------------------------------------------------------------
 /* */
 // HttpMethod::AutoDetectProxy - auto detect proxy                     /*{{{*/
 // ---------------------------------------------------------------------
 /* */


@@ -1450,5 +858,13 @@ bool HttpMethod::AutoDetectProxy()
    return true;
 }
                                                                        /*}}}*/
    return true;
 }
                                                                        /*}}}*/

-
-
+ServerState * HttpMethod::CreateServerState(URI uri)                   /*{{{*/
+{
+   return new HttpServerState(uri, this);
+}
+                                                                       /*}}}*/
+void HttpMethod::RotateDNS()                                           /*{{{*/
+{
+   ::RotateDNS();
+}
+                                                                       /*}}}*/