+// -*- mode: cpp; mode: fold -*-
+// Description /*{{{*/
+// $Id: http.cc,v 1.1 1998/11/01 05:30:47 jgg Exp $
+/* ######################################################################
+
+ HTTP Aquire Method - This is the HTTP aquire method for APT.
+
+ It uses HTTP/1.1 and many of the fancy options there-in, such as
+ pipelining, range, if-range and so on. It accepts on the command line
+ a list of url destination pairs and writes to stdout the status of the
+ operation as defined in the APT method spec.
+
+ It is based on a doubly buffered select loop. All the requests are
+ fed into a single output buffer that is constantly fed out the
+ socket. This provides ideal pipelining as in many cases all of the
+ requests will fit into a single packet. The input socket is buffered
+ the same way and fed into the fd for the file.
+
+ This double buffering provides fairly substantial transfer rates,
+ compared to wget the http method is about 4% faster. Most importantly,
+ when HTTP is compared with FTP as a protocol the speed difference is
+ huge. In tests over the internet from two sites to llug (via ATM) this
+ program got 230k/s sustained http transfer rates. FTP on the other
+ hand topped out at 170k/s. That combined with the time to setup the
+ FTP connection makes HTTP a vastly superior protocol.
+
+ ##################################################################### */
+ /*}}}*/
+// Include Files /*{{{*/
+#include <apt-pkg/fileutl.h>
+#include <apt-pkg/acquire-method.h>
+#include <apt-pkg/error.h>
+#include <apt-pkg/md5.h>
+
+#include <sys/stat.h>
+#include <sys/time.h>
+#include <utime.h>
+#include <unistd.h>
+#include <stdio.h>
+
+// Internet stuff
+#include <netinet/in.h>
+#include <sys/socket.h>
+#include <arpa/inet.h>
+#include <netdb.h>
+
+#include "http.h"
+ /*}}}*/
+
+// CircleBuf::CircleBuf - Circular input buffer /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+CircleBuf::CircleBuf(unsigned long Size) : Size(Size), MD5(0)
+{
+ Buf = new unsigned char[Size];
+ Reset();
+}
+ /*}}}*/
+// CircleBuf::Reset - Reset to the default state /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+void CircleBuf::Reset()
+{
+ InP = 0;
+ OutP = 0;
+ StrPos = 0;
+ MaxGet = (unsigned int)-1;
+ OutQueue = string();
+ if (MD5 != 0)
+ {
+ delete MD5;
+ MD5 = new MD5Summation;
+ }
+};
+ /*}}}*/
+// CircleBuf::Read - Read from a FD into the circular buffer /*{{{*/
+// ---------------------------------------------------------------------
+/* This fills up the buffer with as much data as is in the FD, assuming it
+ is non-blocking.. */
+bool CircleBuf::Read(int Fd)
+{
+ while (1)
+ {
+ // Woops, buffer is full
+ if (InP - OutP == Size)
+ return true;
+
+ // Write the buffer segment
+ int Res;
+ Res = read(Fd,Buf + (InP%Size),LeftRead());
+
+ if (Res == 0)
+ return false;
+ if (Res < 0)
+ {
+ if (errno == EAGAIN)
+ return true;
+ return false;
+ }
+
+ if (InP == 0)
+ gettimeofday(&Start,0);
+ InP += Res;
+ }
+}
+ /*}}}*/
+// CircleBuf::Read - Put the string into the buffer /*{{{*/
+// ---------------------------------------------------------------------
+/* This will hold the string in and fill the buffer with it as it empties */
+bool CircleBuf::Read(string Data)
+{
+ OutQueue += Data;
+ FillOut();
+ return true;
+}
+ /*}}}*/
+// CircleBuf::FillOut - Fill the buffer from the output queue /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+void CircleBuf::FillOut()
+{
+ if (OutQueue.empty() == true)
+ return;
+ while (1)
+ {
+ // Woops, buffer is full
+ if (InP - OutP == Size)
+ return;
+
+ // Write the buffer segment
+ unsigned long Sz = LeftRead();
+ if (OutQueue.length() - StrPos < Sz)
+ Sz = OutQueue.length() - StrPos;
+ memcpy(Buf + (InP%Size),OutQueue.begin() + StrPos,Sz);
+
+ // Advance
+ StrPos += Sz;
+ InP += Sz;
+ if (OutQueue.length() == StrPos)
+ {
+ StrPos = 0;
+ OutQueue = "";
+ return;
+ }
+ }
+}
+ /*}}}*/
+// CircleBuf::Write - Write from the buffer into a FD /*{{{*/
+// ---------------------------------------------------------------------
+/* This empties the buffer into the FD. */
+bool CircleBuf::Write(int Fd)
+{
+ while (1)
+ {
+ FillOut();
+
+ // Woops, buffer is empty
+ if (OutP == InP)
+ return true;
+
+ if (OutP == MaxGet)
+ return true;
+
+ // Write the buffer segment
+ int Res;
+ Res = write(Fd,Buf + (OutP%Size),LeftWrite());
+
+ if (Res == 0)
+ return false;
+ if (Res < 0)
+ {
+ if (errno == EAGAIN)
+ return true;
+
+ return false;
+ }
+
+ if (MD5 != 0)
+ MD5->Add(Buf + (OutP%Size),Res);
+
+ OutP += Res;
+ }
+}
+ /*}}}*/
+// CircleBuf::WriteTillEl - Write from the buffer to a string /*{{{*/
+// ---------------------------------------------------------------------
+/* This copies till the first empty line */
+bool CircleBuf::WriteTillEl(string &Data,bool Single)
+{
+ // We cheat and assume it is unneeded to have more than one buffer load
+ for (unsigned long I = OutP; I < InP; I++)
+ {
+ if (Buf[I%Size] != '\n')
+ continue;
+ for (I++; I < InP && Buf[I%Size] == '\r'; I++);
+
+ if (Single == false)
+ {
+ if (Buf[I%Size] != '\n')
+ continue;
+ for (I++; I < InP && Buf[I%Size] == '\r'; I++);
+ }
+
+ if (I > InP)
+ I = InP;
+
+ Data = "";
+ while (OutP < I)
+ {
+ unsigned long Sz = LeftWrite();
+ if (Sz == 0)
+ return false;
+ if (I - OutP < LeftWrite())
+ Sz = I - OutP;
+ Data += string((char *)(Buf + (OutP%Size)),Sz);
+ OutP += Sz;
+ }
+ return true;
+ }
+ return false;
+}
+ /*}}}*/
+// CircleBuf::Stats - Print out stats information /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+void CircleBuf::Stats()
+{
+ if (InP == 0)
+ return;
+
+ struct timeval Stop;
+ gettimeofday(&Stop,0);
+/* float Diff = Stop.tv_sec - Start.tv_sec +
+ (float)(Stop.tv_usec - Start.tv_usec)/1000000;
+ clog << "Got " << InP << " in " << Diff << " at " << InP/Diff << endl;*/
+}
+ /*}}}*/
+
+// ServerState::ServerState - Constructor /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+ServerState::ServerState(URI Srv,HttpMethod *Owner) : Owner(Owner),
+ In(64*1024), Out(1*1024),
+ ServerName(Srv)
+{
+ Reset();
+}
+ /*}}}*/
+// ServerState::Open - Open a connection to the server /*{{{*/
+// ---------------------------------------------------------------------
+/* This opens a connection to the server. */
+string LastHost;
+in_addr LastHostA;
+bool ServerState::Open()
+{
+ Close();
+
+ int Port;
+ string Host;
+
+ if (Proxy.empty() == false)
+ {
+ Port = ServerName.Port;
+ Host = ServerName.Host;
+ }
+ else
+ {
+ Port = Proxy.Port;
+ Host = Proxy.Host;
+ }
+
+ if (LastHost != Host)
+ {
+ Owner->Status("Connecting to %s",Host.c_str());
+
+ // Lookup the host
+ hostent *Addr = gethostbyname(Host.c_str());
+ if (Addr == 0)
+ return _error->Errno("gethostbyname","Could not lookup host %s",Host.c_str());
+ LastHost = Host;
+ LastHostA = *(in_addr *)(Addr->h_addr_list[0]);
+ }
+
+ Owner->Status("Connecting to %s (%s)",Host.c_str(),inet_ntoa(LastHostA));
+
+ // Get a socket
+ if ((ServerFd = socket(AF_INET,SOCK_STREAM,0)) < 0)
+ return _error->Errno("socket","Could not create a socket");
+
+ // Connect to the server
+ struct sockaddr_in server;
+ server.sin_family = AF_INET;
+ server.sin_port = htons(Port);
+ server.sin_addr = LastHostA;
+ if (connect(ServerFd,(sockaddr *)&server,sizeof(server)) < 0)
+ return _error->Errno("socket","Could not create a socket");
+
+ SetNonBlock(ServerFd,true);
+ return true;
+}
+ /*}}}*/
+// ServerState::Close - Close a connection to the server /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+bool ServerState::Close()
+{
+ close(ServerFd);
+ ServerFd = -1;
+ In.Reset();
+ Out.Reset();
+ return true;
+}
+ /*}}}*/
+// ServerState::RunHeaders - Get the headers before the data /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+bool ServerState::RunHeaders()
+{
+ State = Header;
+
+ Owner->Status("Waiting for file");
+
+ Major = 0;
+ Minor = 0;
+ Result = 0;
+ Size = 0;
+ StartPos = 0;
+ Encoding = Closes;
+ time(&Date);
+
+ do
+ {
+ string Data;
+ if (In.WriteTillEl(Data) == false)
+ continue;
+
+ 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-I)) == false)
+ return false;
+ I = J;
+ }
+ return true;
+ }
+ while (Owner->Go(false,this) == true);
+
+ return false;
+}
+ /*}}}*/
+// ServerState::RunData - Transfer the data from the socket /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+bool ServerState::RunData()
+{
+ State = Data;
+
+ // Chunked transfer encoding is fun..
+ if (Encoding == Chunked)
+ {
+ while (1)
+ {
+ // Grab the block size
+ bool Last = true;
+ string Data;
+ In.Limit(-1);
+ do
+ {
+ if (In.WriteTillEl(Data,true) == true)
+ break;
+ }
+ while ((Last = Owner->Go(false,this)) == true);
+
+ if (Last == false)
+ return false;
+
+ // See if we are done
+ unsigned long Len = strtol(Data.c_str(),0,16);
+ if (Len == 0)
+ {
+ In.Limit(-1);
+
+ // We have to remove the entity trailer
+ Last = true;
+ do
+ {
+ if (In.WriteTillEl(Data,true) == true && Data.length() <= 2)
+ break;
+ }
+ while ((Last = Owner->Go(false,this)) == true);
+ if (Last == false)
+ return false;
+ return true;
+ }
+
+ // Transfer the block
+ In.Limit(Len);
+ while (Owner->Go(true,this) == true)
+ if (In.IsLimit() == true)
+ break;
+
+ // Error
+ if (In.IsLimit() == false)
+ return false;
+
+ // The server sends an extra new line before the next block specifier..
+ In.Limit(-1);
+ Last = true;
+ do
+ {
+ if (In.WriteTillEl(Data,true) == true)
+ break;
+ }
+ while ((Last = Owner->Go(false,this)) == true);
+ if (Last == false)
+ return false;
+ }
+ }
+ else
+ {
+ /* Closes encoding is used when the server did not specify a size, the
+ loss of the connection means we are done */
+ if (Encoding == Closes)
+ In.Limit(-1);
+ else
+ In.Limit(Size - StartPos);
+
+ // Just transfer the whole block.
+ do
+ {
+ if (In.IsLimit() == false)
+ continue;
+
+ In.Limit(-1);
+ return true;
+ }
+ while (Owner->Go(true,this) == true);
+ }
+
+ return Owner->Flush(this);
+}
+ /*}}}*/
+// ServerState::HeaderLine - Process a header line /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+bool ServerState::HeaderLine(string Line)
+{
+ if (Line.empty() == true)
+ return true;
+
+ // The http server might be trying to do something evil.
+ if (Line.length() >= MAXLEN)
+ return _error->Error("Got a single header line over %u chars",MAXLEN);
+
+ string::size_type Pos = Line.find(' ');
+ if (Pos == string::npos || Pos+1 > Line.length())
+ return _error->Error("Bad header line");
+
+ string Tag = string(Line,0,Pos);
+ string Val = string(Line,Pos+1);
+
+ if (stringcasecmp(Tag,"HTTP") == 0)
+ {
+ // Evil servers return no version
+ if (Line[4] == '/')
+ {
+ if (sscanf(Line.c_str(),"HTTP/%u.%u %u %[^\n]",&Major,&Minor,
+ &Result,Code) != 4)
+ return _error->Error("The http server sent an invalid reply header");
+ }
+ else
+ {
+ Major = 0;
+ Minor = 9;
+ if (sscanf(Line.c_str(),"HTTP %u %[^\n]",&Result,Code) != 2)
+ return _error->Error("The http server sent an invalid reply header");
+ }
+
+ return true;
+ }
+
+ if (stringcasecmp(Tag,"Content-Length:"))
+ {
+ if (Encoding == Closes)
+ Encoding = Stream;
+
+ // The length is already set from the Content-Range header
+ if (StartPos != 0)
+ return true;
+
+ if (sscanf(Val.c_str(),"%lu",&Size) != 1)
+ return _error->Error("The http server sent an invalid Content-Length header");
+ return true;
+ }
+
+ if (stringcasecmp(Tag,"Content-Range:"))
+ {
+ if (sscanf(Val.c_str(),"bytes %lu-%*u/%lu",&StartPos,&Size) != 2)
+ return _error->Error("The http server sent an invalid Content-Range header");
+ if ((unsigned)StartPos > Size)
+ return _error->Error("This http server has broken range support");
+ return true;
+ }
+
+ if (stringcasecmp(Tag,"Transfer-Encoding:"))
+ {
+ if (stringcasecmp(Val,"chunked"))
+ Encoding = Chunked;
+ return true;
+ }
+
+ if (stringcasecmp(Tag,"Last-Modified:"))
+ {
+ if (StrToTime(Val,Date) == false)
+ return _error->Error("Unknown date format");
+ return true;
+ }
+
+ return true;
+}
+ /*}}}*/
+
+// HttpMethod::SendReq - Send the HTTP request /*{{{*/
+// ---------------------------------------------------------------------
+/* This places the http request in the outbound buffer */
+void HttpMethod::SendReq(FetchItem *Itm,CircleBuf &Out)
+{
+ URI Uri = Itm->Uri;
+
+ // The HTTP server expects a hostname with a trailing :port
+ char Buf[300];
+ string ProperHost = Uri.Host;
+ if (Uri.Port != 0)
+ {
+ sprintf(Buf,":%u",Uri.Port);
+ ProperHost += Buf;
+ }
+
+ // Build the request
+ if (Proxy.empty() == true)
+ sprintf(Buf,"GET %s HTTP/1.1\r\nHost: %s\r\nConnection: keep-alive\r\n",
+ Uri.Path.c_str(),ProperHost.c_str());
+ else
+ sprintf(Buf,"GET %s HTTP/1.1\r\nHost: %s\r\n",
+ Itm->Uri.c_str(),ProperHost.c_str());
+ string Req = Buf;
+
+ // Check for a partial file
+ struct stat SBuf;
+ if (stat(Itm->DestFile.c_str(),&SBuf) >= 0 && SBuf.st_size > 0)
+ {
+ // In this case we send an if-range query with a range header
+ sprintf(Buf,"Range: bytes=%li-\r\nIf-Range: %s\r\n",SBuf.st_size - 1,
+ TimeRFC1123(SBuf.st_mtime).c_str());
+ Req += Buf;
+ }
+ else
+ {
+ if (Itm->LastModified != 0)
+ {
+ sprintf(Buf,"If-Modified-Since: %s\r\n",TimeRFC1123(Itm->LastModified).c_str());
+ Req += Buf;
+ }
+ }
+
+/* if (ProxyAuth.empty() == false)
+ Req += string("Proxy-Authorization: Basic ") + Base64Encode(ProxyAuth) + "\r\n";*/
+
+ Req += "User-Agent: Debian APT-HTTP/1.2\r\n\r\n";
+ Out.Read(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)
+ return false;
+
+ fd_set rfds,wfds,efds;
+ FD_ZERO(&rfds);
+ FD_ZERO(&wfds);
+ FD_ZERO(&efds);
+
+ // Add the server
+ if (Srv->Out.WriteSpace() == true && Srv->ServerFd != -1)
+ 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
+ FD_SET(STDIN_FILENO,&rfds);
+
+ // Error Set
+ if (FileFD != -1)
+ FD_SET(FileFD,&efds);
+ if (Srv->ServerFd != -1)
+ FD_SET(Srv->ServerFd,&efds);
+
+ // Figure out the max fd
+ int MaxFd = FileFD;
+ if (MaxFd < Srv->ServerFd)
+ MaxFd = Srv->ServerFd;
+
+ // Select
+ struct timeval tv;
+ tv.tv_sec = 120;
+ tv.tv_usec = 0;
+ int Res = 0;
+ if ((Res = select(MaxFd+1,&rfds,&wfds,&efds,&tv)) < 0)
+ return _error->Errno("select","Select failed");
+
+ if (Res == 0)
+ {
+ _error->Error("Connection timed out");
+ return ServerDie(Srv);
+ }
+
+ // Some kind of exception (error) on the sockets, die
+ if ((FileFD != -1 && FD_ISSET(FileFD,&efds)) ||
+ (Srv->ServerFd != -1 && FD_ISSET(Srv->ServerFd,&efds)))
+ return _error->Error("Socket Exception");
+
+ // 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) != 0)
+ 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)
+ {
+ 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 || Srv->Encoding == ServerState::Closes)
+ return true;
+ }
+ return false;
+}
+ /*}}}*/
+// HttpMethod::ServerDie - The server has closed the connection. /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+bool HttpMethod::ServerDie(ServerState *Srv)
+{
+ // Dump the buffer to the file
+ if (Srv->State == ServerState::Data)
+ {
+ 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");
+ }
+ }
+
+ // See if this is because the server finished the data stream
+ if (Srv->In.IsLimit() == false && Srv->State != ServerState::Header &&
+ Srv->Encoding != ServerState::Closes)
+ {
+ if (errno == 0)
+ return _error->Error("Error reading from server Remote end closed connection");
+ 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
+ 0 - File is open,
+ 1 - IMS hit
+ 3 - Unrecoverable error */
+int 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 1;
+ }
+
+ /* We have a reply we dont handle. This should indicate a perm server
+ failure */
+ if (Srv->Result < 200 || Srv->Result >= 300)
+ {
+ _error->Error("%u %s",Srv->Result,Srv->Code);
+ return 3;
+ }
+
+ // 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 3;
+
+ // Set the expected size
+ if (Srv->StartPos >= 0)
+ {
+ Res.ResumePoint = Srv->StartPos;
+ ftruncate(File->Fd(),Srv->StartPos);
+ }
+
+ // Set the start point
+ lseek(File->Fd(),0,SEEK_END);
+
+ delete Srv->In.MD5;
+ Srv->In.MD5 = new MD5Summation;
+
+ // Fill the MD5 Hash if the file is non-empty (resume)
+ if (Srv->StartPos > 0)
+ {
+ lseek(File->Fd(),0,SEEK_SET);
+ if (Srv->In.MD5->AddFD(File->Fd(),Srv->StartPos) == false)
+ {
+ _error->Errno("read","Problem hashing file");
+ return 3;
+ }
+ lseek(File->Fd(),0,SEEK_END);
+ }
+
+ SetNonBlock(File->Fd(),true);
+ return 0;
+}
+ /*}}}*/
+// HttpMethod::Loop /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+int HttpMethod::Loop()
+{
+ ServerState *Server = 0;
+
+ while (1)
+ {
+ // We have no commands, wait for some to arrive
+ if (Queue == 0)
+ {
+ if (WaitFd(STDIN_FILENO) == false)
+ return 0;
+ }
+
+ // Run messages
+ if (Run(true) != 0)
+ return 100;
+
+ if (Queue == 0)
+ continue;
+
+ // Connect to the server
+ if (Server == 0 || Server->Comp(Queue->Uri) == false)
+ {
+ delete Server;
+ Server = new ServerState(Queue->Uri,this);
+ }
+
+ // Connnect to the host
+ if (Server->Open() == false)
+ {
+ Fail();
+ continue;
+ }
+
+ // Queue the request
+ SendReq(Queue,Server->In);
+
+ // Handle the header data
+ if (Server->RunHeaders() == false)
+ {
+ Fail();
+ continue;
+ }
+
+ // Decide what to do.
+ FetchResult Res;
+ switch (DealWithHeaders(Res,Server))
+ {
+ // Ok, the file is Open
+ case 0:
+ {
+ URIStart(Res);
+
+ // Run the data
+ if (Server->RunData() == false)
+ Fail();
+
+ Res.MD5Sum = Srv->In.MD5->Result();
+ delete File;
+ File = 0;
+ break;
+ }
+
+ // IMS hit
+ case 1:
+ {
+ URIDone(Res);
+ break;
+ }
+
+ // Hard server error, not found or something
+ case 3:
+ {
+ Fail();
+ break;
+ }
+
+ default:
+ Fail("Internal error");
+ break;
+ }
+ }
+
+ return 0;
+}
+ /*}}}*/
+
+int main()
+{
+ HttpMethod Mth;
+
+ return Mth.Loop();
+}
projects / apt.git / commitdiff
