* merged from mainline

[apt.git] / methods / http.cc

diff --git a/methods/http.cc b/methods/http.cc
index f9358990cd88dd87fec4f9fc4aa290c3cd5b1646..cb63ada499f9df866f96f143a0eec53608fbf7ad 100644 (file)
--- a/methods/http.cc
+++ b/methods/http.cc
@@ -58,6 +58,11 @@ unsigned long PipelineDepth = 10;
 unsigned long TimeOut = 120;
 bool Debug = false;
 
+unsigned long CircleBuf::BwReadLimit=0;
+unsigned long CircleBuf::BwTickReadData=0;
+struct timeval CircleBuf::BwReadTick={0,0};
+const unsigned int CircleBuf::BW_HZ=10;
+  
 // CircleBuf::CircleBuf - Circular input buffer                                /*{{{*/
 // ---------------------------------------------------------------------
 /* */
@@ -65,6 +70,8 @@ CircleBuf::CircleBuf(unsigned long Size) : Size(Size), Hash(0)
 {
    Buf = new unsigned char[Size];
    Reset();
+
+   CircleBuf::BwReadLimit = _config->FindI("Acquire::http::Dl-Limit",0)*1024;
 }
                                                                        /*}}}*/
 // CircleBuf::Reset - Reset to the default state                       /*{{{*/
@@ -90,16 +97,45 @@ void CircleBuf::Reset()
    is non-blocking.. */
 bool CircleBuf::Read(int Fd)
 {
+   unsigned long BwReadMax;
+
    while (1)
    {
       // Woops, buffer is full
       if (InP - OutP == Size)
         return true;
-      
+
+      // what's left to read in this tick
+      BwReadMax = CircleBuf::BwReadLimit/BW_HZ;
+
+      if(CircleBuf::BwReadLimit) {
+        struct timeval now;
+        gettimeofday(&now,0);
+
+        unsigned long d = (now.tv_sec-CircleBuf::BwReadTick.tv_sec)*1000000 +
+           now.tv_usec-CircleBuf::BwReadTick.tv_usec;
+        if(d > 1000000/BW_HZ) {
+           CircleBuf::BwReadTick = now;
+           CircleBuf::BwTickReadData = 0;
+        } 
+        
+        if(CircleBuf::BwTickReadData >= BwReadMax) {
+           usleep(1000000/BW_HZ);
+           return true;
+        }
+      }
+
       // Write the buffer segment
       int Res;
-      Res = read(Fd,Buf + (InP%Size),LeftRead());
+      if(CircleBuf::BwReadLimit) {
+        Res = read(Fd,Buf + (InP%Size), 
+                   BwReadMax > LeftRead() ? LeftRead() : BwReadMax);
+      } else
+        Res = read(Fd,Buf + (InP%Size),LeftRead());
       
+      if(Res > 0 && BwReadLimit > 0) 
+        CircleBuf::BwTickReadData += Res;
+    
       if (Res == 0)
         return false;
       if (Res < 0)
@@ -204,28 +240,23 @@ bool CircleBuf::WriteTillEl(string &Data,bool Single)
       if (Buf[I%Size] != '\n')
         continue;
       ++I;
-      if (I < InP  && Buf[I%Size] == '\r')
-         ++I;
       
       if (Single == false)
       {
-        if (Buf[I%Size] != '\n')
-           continue;
-         ++I;
          if (I < InP  && Buf[I%Size] == '\r')
             ++I;
+         if (I >= InP || Buf[I%Size] != '\n')
+            continue;
+         ++I;
       }
       
-      if (I > InP)
-        I = InP;
-      
       Data = "";
       while (OutP < I)
       {
         unsigned long Sz = LeftWrite();
         if (Sz == 0)
            return false;
-        if (I - OutP < LeftWrite())
+        if (I - OutP < Sz)
            Sz = I - OutP;
         Data += string((char *)(Buf + (OutP%Size)),Sz);
         OutP += Sz;
@@ -514,14 +545,14 @@ bool ServerState::HeaderLine(string Line)
       {
         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"));
+           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 _error->Error(_("The HTTP server sent an invalid reply header"));
       }
 
       /* Check the HTTP response header to get the default persistance
@@ -550,7 +581,7 @@ bool ServerState::HeaderLine(string Line)
         return true;
       
       if (sscanf(Val.c_str(),"%lu",&Size) != 1)
-        return _error->Error(_("The http server sent an invalid Content-Length header"));
+        return _error->Error(_("The HTTP server sent an invalid Content-Length header"));
       return true;
    }
 
@@ -565,9 +596,9 @@ bool ServerState::HeaderLine(string Line)
       HaveContent = true;
       
       if (sscanf(Val.c_str(),"bytes %lu-%*u/%lu",&StartPos,&Size) != 2)
-        return _error->Error(_("The http server sent an invalid Content-Range header"));
+        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 _error->Error(_("This HTTP server has broken range support"));
       return true;
    }
    
@@ -635,9 +666,9 @@ void HttpMethod::SendReq(FetchItem *Itm,CircleBuf &Out)
                 and a no-store directive for archives. */
       sprintf(Buf,"GET %s HTTP/1.1\r\nHost: %s\r\n",
              Itm->Uri.c_str(),ProperHost.c_str());
-      if (_config->FindB("Acquire::http::No-Cache",false) == true)
-        strcat(Buf,"Cache-Control: no-cache\r\nPragma: no-cache\r\n");
-      else
+      // only generate a cache control header if we actually want to 
+      // use a cache
+      if (_config->FindB("Acquire::http::No-Cache",false) == false)
       {
         if (Itm->IndexFile == true)
            sprintf(Buf+strlen(Buf),"Cache-Control: max-age=%u\r\n",
@@ -649,6 +680,10 @@ void HttpMethod::SendReq(FetchItem *Itm,CircleBuf &Out)
         }       
       }
    }
+   // generate a no-cache header if needed
+   if (_config->FindB("Acquire::http::No-Cache",false) == true)
+      strcat(Buf,"Cache-Control: no-cache\r\nPragma: no-cache\r\n");
+
    
    string Req = Buf;
 
@@ -783,7 +818,10 @@ bool HttpMethod::Flush(ServerState *Srv)
 {
    if (File != 0)
    {
-      SetNonBlock(File->Fd(),false);
+      // 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;
       
@@ -811,7 +849,10 @@ bool HttpMethod::ServerDie(ServerState *Srv)
    // Dump the buffer to the file
    if (Srv->State == ServerState::Data)
    {
-      SetNonBlock(File->Fd(),false);
+      // 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)
@@ -829,7 +870,7 @@ bool HttpMethod::ServerDie(ServerState *Srv)
    {
       Srv->Close();
       if (LErrno == 0)
-        return _error->Error(_("Error reading from server Remote end closed connection"));
+        return _error->Error(_("Error reading from server. Remote end closed connection"));
       errno = LErrno;
       return _error->Errno("read",_("Error reading from server"));
    }
@@ -1062,7 +1103,7 @@ int HttpMethod::Loop()
         // The header data is bad
         case 2:
         {
-           _error->Error(_("Bad header Data"));
+           _error->Error(_("Bad header data"));
            Fail(true);
            RotateDNS();
            continue;