X-Git-Url: https://git.saurik.com/apt.git/blobdiff_plain/9224ce3d4d1ea0428a70e75134998e08aa45b1e6..98cc7fd2c1d397623960baf69ae3cec04a87a23e:/methods/server.cc?ds=inline

diff --git a/methods/server.cc b/methods/server.cc
index e403f1071..f61a6fedb 100644
--- a/methods/server.cc
+++ b/methods/server.cc
@@ -54,7 +54,7 @@ ServerState::RunHeadersResult ServerState::RunHeaders(FileFd * const File,
    Major = 0; 
    Minor = 0; 
    Result = 0; 
-   Size = 0; 
+   TotalFileSize = 0;
    JunkSize = 0;
    StartPos = 0;
    Encoding = Closes;
@@ -164,15 +164,22 @@ bool ServerState::HeaderLine(string Line)
 	 Encoding = Stream;
       HaveContent = true;
 
-      unsigned long long * SizePtr = &Size;
+      unsigned long long * DownloadSizePtr = &DownloadSize;
       if (Result == 416)
-	 SizePtr = &JunkSize;
+	 DownloadSizePtr = &JunkSize;
 
-      *SizePtr = strtoull(Val.c_str(), NULL, 10);
-      if (*SizePtr >= std::numeric_limits<unsigned long long>::max())
+      *DownloadSizePtr = strtoull(Val.c_str(), NULL, 10);
+      if (*DownloadSizePtr >= std::numeric_limits<unsigned long long>::max())
 	 return _error->Errno("HeaderLine", _("The HTTP server sent an invalid Content-Length header"));
-      else if (*SizePtr == 0)
+      else if (*DownloadSizePtr == 0)
 	 HaveContent = false;
+
+      // On partial content (206) the Content-Length less than the real
+      // size, so do not set it here but leave that to the Content-Range
+      // header instead
+      if(Result != 206 && TotalFileSize == 0)
+         TotalFileSize = DownloadSize;
+
       return true;
    }
 
@@ -187,12 +194,15 @@ bool ServerState::HeaderLine(string Line)
       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)
+      if (Result == 416 && sscanf(Val.c_str(), "bytes */%llu",&TotalFileSize) == 1)
 	 ; // we got the expected filesize which is all we wanted
-      else if (sscanf(Val.c_str(),"bytes %llu-%*u/%llu",&StartPos,&Size) != 2)
+      else if (sscanf(Val.c_str(),"bytes %llu-%*u/%llu",&StartPos,&TotalFileSize) != 2)
 	 return _error->Error(_("The HTTP server sent an invalid Content-Range header"));
-      if ((unsigned long long)StartPos > Size)
+      if ((unsigned long long)StartPos > TotalFileSize)
 	 return _error->Error(_("This HTTP server has broken range support"));
+
+      // figure out what we will download
+      DownloadSize = TotalFileSize - StartPos;
       return true;
    }
 
@@ -235,6 +245,12 @@ ServerState::ServerState(URI Srv, ServerMethod *Owner) : ServerName(Srv), TimeOu
    Reset();
 }
 									/*}}}*/
+bool ServerState::AddPartialFileToHashes(FileFd &File)			/*{{{*/
+{
+   File.Truncate(StartPos);
+   return GetHashes()->AddFD(File, StartPos);
+}
+									/*}}}*/
 
 bool ServerMethod::Configuration(string Message)			/*{{{*/
 {
@@ -263,7 +279,7 @@ ServerMethod::DealWithHeaders(FetchResult &Res)
       Res.LastModified = Queue->LastModified;
       return IMS_HIT;
    }
-   
+
    /* Redirect
     *
     * Note that it is only OK for us to treat all redirection the same
@@ -308,7 +324,20 @@ ServerMethod::DealWithHeaders(FetchResult &Res)
       struct stat SBuf;
       if (stat(Queue->DestFile.c_str(),&SBuf) >= 0 && SBuf.st_size > 0)
       {
-	 if ((unsigned long long)SBuf.st_size == Server->Size)
+	 bool partialHit = false;
+	 if (Queue->ExpectedHashes.usable() == true)
+	 {
+	    Hashes resultHashes(Queue->ExpectedHashes);
+	    FileFd file(Queue->DestFile, FileFd::ReadOnly);
+	    Server->TotalFileSize = file.FileSize();
+	    Server->Date = file.ModificationTime();
+	    resultHashes.AddFD(file);
+	    HashStringList const hashList = resultHashes.GetHashStringList();
+	    partialHit = (Queue->ExpectedHashes == hashList);
+	 }
+	 else if ((unsigned long long)SBuf.st_size == Server->TotalFileSize)
+	    partialHit = true;
+	 if (partialHit == true)
 	 {
 	    // the file is completely downloaded, but was not moved
 	    if (Server->HaveContent == true)
@@ -318,7 +347,7 @@ ServerMethod::DealWithHeaders(FetchResult &Res)
 	       Server->RunData(&DevNull);
 	    }
 	    Server->HaveContent = false;
-	    Server->StartPos = Server->Size;
+	    Server->StartPos = Server->TotalFileSize;
 	    Server->Result = 200;
 	 }
 	 else if (unlink(Queue->DestFile.c_str()) == 0)
@@ -344,7 +373,7 @@ ServerMethod::DealWithHeaders(FetchResult &Res)
 
    // This is some sort of 2xx 'data follows' reply
    Res.LastModified = Server->Date;
-   Res.Size = Server->Size;
+   Res.Size = Server->TotalFileSize;
    
    // Open the file
    delete File;
@@ -357,7 +386,7 @@ ServerMethod::DealWithHeaders(FetchResult &Res)
    FailFd = File->Fd();
    FailTime = Server->Date;
 
-   if (Server->InitHashes(*File, Queue->ExpectedHashes) == false)
+   if (Server->InitHashes(Queue->ExpectedHashes) == false || Server->AddPartialFileToHashes(*File) == false)
    {
       _error->Errno("read",_("Problem hashing file"));
       return ERROR_NOT_FROM_SERVER;