Implement CacheDB for source packages in apt-ftparchive

12 files changed, 459 insertions, 108 deletions

diff --git a/apt-pkg/contrib/hashes.cc b/apt-pkg/contrib/hashes.cc
index 1fce0d75f..15f83615d 100644
--- a/apt-pkg/contrib/hashes.cc
+++ b/apt-pkg/contrib/hashes.cc
@@ -133,7 +133,7 @@ bool Hashes::AddFD(int const Fd,unsigned long long Size, bool const addMD5,
 		   bool const addSHA1, bool const addSHA256, bool const addSHA512)
 {
    unsigned char Buf[64*64];
-   bool const ToEOF = (Size == 0);
+   bool const ToEOF = (Size == UntilEOF);
    while (Size != 0 || ToEOF)
    {
       unsigned long long n = sizeof(Buf);
diff --git a/apt-pkg/contrib/hashes.h b/apt-pkg/contrib/hashes.h
index 5cd1af03b..7a62f8a8f 100644
--- a/apt-pkg/contrib/hashes.h
+++ b/apt-pkg/contrib/hashes.h
@@ -78,6 +78,8 @@ class Hashes
    SHA256Summation SHA256;
    SHA512Summation SHA512;
    
+   static const int UntilEOF = 0;
+
    inline bool Add(const unsigned char *Data,unsigned long long Size)
    {
       return MD5.Add(Data,Size) && SHA1.Add(Data,Size) && SHA256.Add(Data,Size) && SHA512.Add(Data,Size);
diff --git a/ftparchive/apt-ftparchive.cc b/ftparchive/apt-ftparchive.cc
index 692f19e25..c1614398b 100644
--- a/ftparchive/apt-ftparchive.cc
+++ b/ftparchive/apt-ftparchive.cc
@@ -62,6 +62,7 @@ struct PackageMap
    // Stuff for the Package File
    string PkgFile;
    string BinCacheDB;
+   string SrcCacheDB;
    string BinOverride;
    string ExtraOverride;
 
@@ -106,6 +107,12 @@ struct PackageMap
       inline bool operator() (const PackageMap &x,const PackageMap &y)
       {return x.BinCacheDB < y.BinCacheDB;};
    };  
+
+   struct SrcDBCompare : public binary_function<PackageMap,PackageMap,bool>
+   {
+      inline bool operator() (const PackageMap &x,const PackageMap &y)
+      {return x.SrcCacheDB < y.SrcCacheDB;};
+   };
    
    void GetGeneral(Configuration &Setup,Configuration &Block);
    bool GenPackages(Configuration &Setup,struct CacheDB::Stats &Stats);
@@ -232,11 +239,14 @@ bool PackageMap::GenPackages(Configuration &Setup,struct CacheDB::Stats &Stats)
    gettimeofday(&NewTime,0);
    double Delta = NewTime.tv_sec - StartTime.tv_sec + 
                   (NewTime.tv_usec - StartTime.tv_usec)/1000000.0;
-   
+
    c0out << Packages.Stats.Packages << " files " <<
 /*      SizeToStr(Packages.Stats.MD5Bytes) << "B/" << */
       SizeToStr(Packages.Stats.Bytes) << "B " <<
       TimeToStr((long)Delta) << endl;
+
+   if(_config->FindB("APT::FTPArchive::ShowCacheMisses", false) == true)
+     c0out << " Misses in Cache: " << Packages.Stats.Misses<< endl;
    
    Stats.Add(Packages.Stats);
    Stats.DeLinkBytes = Packages.Stats.DeLinkBytes;
@@ -263,7 +273,7 @@ bool PackageMap::GenSources(Configuration &Setup,struct CacheDB::Stats &Stats)
    SrcDone = true;
    
    // Create a package writer object.
-   SourcesWriter Sources(_config->Find("APT::FTPArchive::DB"),
+   SourcesWriter Sources(flCombine(CacheDir, SrcCacheDB),
 			 flCombine(OverrideDir,BinOverride),
 			 flCombine(OverrideDir,SrcOverride),
 			 flCombine(OverrideDir,SrcExtraOverride));
@@ -323,6 +333,9 @@ bool PackageMap::GenSources(Configuration &Setup,struct CacheDB::Stats &Stats)
    c0out << Sources.Stats.Packages << " pkgs in " <<
       TimeToStr((long)Delta) << endl;
 
+   if(_config->FindB("APT::FTPArchive::ShowCacheMisses", false) == true)
+     c0out << " Misses in Cache: " << Sources.Stats.Misses << endl;
+
    Stats.Add(Sources.Stats);
    Stats.DeLinkBytes = Sources.Stats.DeLinkBytes;
    
@@ -435,6 +448,9 @@ bool PackageMap::GenContents(Configuration &Setup,
    double Delta = NewTime.tv_sec - StartTime.tv_sec + 
                   (NewTime.tv_usec - StartTime.tv_usec)/1000000.0;
    
+   if(_config->FindB("APT::FTPArchive::ShowCacheMisses", false) == true)
+     c0out << " Misses in Cache: " << Contents.Stats.Misses<< endl;
+
    c0out << Contents.Stats.Packages << " files " <<
       SizeToStr(Contents.Stats.Bytes) << "B " <<
       TimeToStr((long)Delta) << endl;
@@ -465,6 +481,8 @@ static void LoadTree(vector<PackageMap> &PkgList,Configuration &Setup)
    string DContentsH = Setup.Find("TreeDefault::Contents::Header","");
    string DBCache = Setup.Find("TreeDefault::BinCacheDB",
 			       "packages-$(ARCH).db");
+   string SrcDBCache = Setup.Find("TreeDefault::SrcCacheDB",
+			       "sources-$(SECTION).db");
    string DSources = Setup.Find("TreeDefault::Sources",
 				"$(DIST)/$(SECTION)/source/Sources");
    string DFLFile = Setup.Find("TreeDefault::FileList", "");
@@ -524,6 +542,7 @@ static void LoadTree(vector<PackageMap> &PkgList,Configuration &Setup)
 	       Itm.Tag = SubstVar("$(DIST)/$(SECTION)/source",Vars);
 	       Itm.FLFile = SubstVar(Block.Find("SourceFileList",DSFLFile.c_str()),Vars);
 	       Itm.SrcExtraOverride = SubstVar(Block.Find("SrcExtraOverride"),Vars);
+	       Itm.SrcCacheDB = SubstVar(Block.Find("SrcCacheDB",SrcDBCache.c_str()),Vars);
 	    }
 	    else
 	    {
@@ -573,6 +592,7 @@ static void LoadBinDir(vector<PackageMap> &PkgList,Configuration &Setup)
       Itm.PkgFile = Block.Find("Packages");
       Itm.SrcFile = Block.Find("Sources");
       Itm.BinCacheDB = Block.Find("BinCacheDB");
+      Itm.SrcCacheDB = Block.Find("SrcCacheDB");
       Itm.BinOverride = Block.Find("BinOverride");
       Itm.ExtraOverride = Block.Find("ExtraOverride");
       Itm.SrcExtraOverride = Block.Find("SrcExtraOverride");
@@ -777,6 +797,7 @@ static bool Generate(CommandLine &CmdL)
 
    // Sort by cache DB to improve IO locality.
    stable_sort(PkgList.begin(),PkgList.end(),PackageMap::DBCompare());
+   stable_sort(PkgList.begin(),PkgList.end(),PackageMap::SrcDBCompare());
 		
    // Generate packages
    if (CmdL.FileSize() <= 2)
@@ -947,8 +968,11 @@ static bool Clean(CommandLine &CmdL)
 	 _error->DumpErrors();
       
       string CacheDB = I->BinCacheDB;
-      for (; I != PkgList.end() && I->BinCacheDB == CacheDB; ++I);
+      for (; I != PkgList.end() && I->BinCacheDB == CacheDB; ++I)
+         ;
    }
+
+   // FIXME: clean for the SourcesDB
    
    return true;
 }
diff --git a/ftparchive/cachedb.cc b/ftparchive/cachedb.cc
index 523c6b5fa..a63b5b9d9 100644
--- a/ftparchive/cachedb.cc
+++ b/ftparchive/cachedb.cc
@@ -20,6 +20,7 @@
 #include <apt-pkg/configuration.h>
 #include <apt-pkg/fileutl.h>
 #include <apt-pkg/debfile.h>
+#include <apt-pkg/gpgv.h>
 
 #include <netinet/in.h>       // htonl, etc
 #include <ctype.h>
@@ -99,13 +100,32 @@ bool CacheDB::OpenFile()
 	Fd = new FileFd(FileName,FileFd::ReadOnly);
 	if (_error->PendingError() == true)
 	{
-		delete Fd;
-		Fd = NULL;
-		return false;
+           CloseFile();
+           return false;
 	}
 	return true;
 }
 									/*}}}*/
+void CacheDB::CloseFile()
+{
+   delete Fd;
+   Fd = NULL;
+}
+
+bool CacheDB::OpenDebFile()
+{
+   DebFile = new debDebFile(*Fd);
+   if (_error->PendingError() == true)
+      return false;
+   return true;
+}
+
+void CacheDB::CloseDebFile()
+{
+   delete DebFile;
+   DebFile = NULL;
+}
+
 // CacheDB::GetFileStat - Get stats from the file 			/*{{{*/
 // ---------------------------------------------------------------------
 /* This gets the size from the database if it's there.  If we need
@@ -168,56 +188,94 @@ bool CacheDB::GetCurStat()
 									/*}}}*/
 // CacheDB::GetFileInfo - Get all the info about the file		/*{{{*/
 // ---------------------------------------------------------------------
-bool CacheDB::GetFileInfo(std::string const &FileName, bool const &DoControl, bool const &DoContents,
-				bool const &GenContentsOnly, bool const &DoMD5, bool const &DoSHA1,
-				bool const &DoSHA256, 	bool const &DoSHA512, 
+bool CacheDB::GetFileInfo(std::string const &FileName, bool const &DoControl, 
+                          bool const &DoContents,
+                          bool const &GenContentsOnly, 
+                          bool const &DoSource,
+                          bool const &DoMD5, bool const &DoSHA1,
+                          bool const &DoSHA256, bool const &DoSHA512, 
                           bool const &checkMtime)
 {
-	this->FileName = FileName;
+   bool result = true;
+   this->FileName = FileName;
 
-	if (GetCurStat() == false)
+   if (GetCurStat() == false)
    {
-		return false;
+      return false;
    }   
    OldStat = CurStat;
 
-	if (GetFileStat(checkMtime) == false)
-	{
-		delete Fd;
-		Fd = NULL;
-		return false;	
-	}
+   if (GetFileStat(checkMtime) == false)
+   {
+      CloseFile();
+      return false;	
+   }
 
     /* if mtime changed, update CurStat from disk */
     if (checkMtime == true && OldStat.mtime != CurStat.mtime)
-        CurStat.Flags = FlSize;
-
-	Stats.Bytes += CurStat.FileSize;
-	Stats.Packages++;
-
-	if ((DoControl && LoadControl() == false)
-		|| (DoContents && LoadContents(GenContentsOnly) == false)
-		|| (DoMD5 && GetMD5(false) == false)
-		|| (DoSHA1 && GetSHA1(false) == false)
-		|| (DoSHA256 && GetSHA256(false) == false)
-		|| (DoSHA512 && GetSHA512(false) == false)
-           )
-	{
-		delete Fd;
-		Fd = NULL;
-		delete DebFile;
-		DebFile = NULL;
-		return false;	
-	}
+       CurStat.Flags = FlSize;
 
-	delete Fd;
-	Fd = NULL;
-	delete DebFile;
-	DebFile = NULL;
+    Stats.Bytes += CurStat.FileSize;
+    Stats.Packages++;
 
-   return true;
+    if ((DoControl && LoadControl() == false)
+        || (DoContents && LoadContents(GenContentsOnly) == false)
+        || (DoSource && LoadSource() == false)
+        || (DoMD5 && GetMD5(false) == false)
+        || (DoSHA1 && GetSHA1(false) == false)
+        || (DoSHA256 && GetSHA256(false) == false)
+        || (DoSHA512 && GetSHA512(false) == false)
+       )
+    {
+       result = false;
+    }
+    
+    CloseFile();
+    CloseDebFile();
+    
+    return result;
 }
 									/*}}}*/
+
+bool CacheDB::LoadSource()
+{
+   // Try to read the control information out of the DB.
+   if ((CurStat.Flags & FlSource) == FlSource)
+   {
+      // Lookup the control information
+      InitQuery("cs");
+      if (Get() == true && Dsc.TakeDsc(Data.data, Data.size) == true)
+	    return true;
+      CurStat.Flags &= ~FlSource;
+   }
+   
+   if (Fd == NULL && OpenFile() == false)
+   {
+      return false;
+   }
+
+   // Read the .dsc file
+   if (Fd == NULL)
+   {
+      if(OpenFile() == false)
+         return false;
+   }
+   
+   Stats.Misses++;
+   if (Dsc.Read(FileName) == false)
+      return false;
+
+   if (Dsc.Data == 0)
+      return _error->Error(_("Failed to read .dsc"));
+   
+   // Write back the control information
+   InitQuery("cs");
+   if (Put(Dsc.Data, Dsc.Length) == true)
+      CurStat.Flags |= FlSource;
+
+   return true;
+}
+
 // CacheDB::LoadControl - Load Control information			/*{{{*/
 // ---------------------------------------------------------------------
 /* */
@@ -238,11 +296,10 @@ bool CacheDB::LoadControl()
       return false;
    }
    // Create a deb instance to read the archive
-   if (DebFile == 0)
+   if (DebFile == NULL)
    {
-      DebFile = new debDebFile(*Fd);
-      if (_error->PendingError() == true)
-	 return false;
+      if(OpenDebFile() == false)
+         return false;
    }
    
    Stats.Misses++;
@@ -288,8 +345,7 @@ bool CacheDB::LoadContents(bool const &GenOnly)
    // Create a deb instance to read the archive
    if (DebFile == 0)
    {
-      DebFile = new debDebFile(*Fd);
-      if (_error->PendingError() == true)
+      if(OpenDebFile() == false)
 	 return false;
    }
 
diff --git a/ftparchive/cachedb.h b/ftparchive/cachedb.h
index 49b9a0ef5..4e33c8635 100644
--- a/ftparchive/cachedb.h
+++ b/ftparchive/cachedb.h
@@ -22,9 +22,11 @@
 #include <stdio.h>
 
 #include "contents.h"
+#include "sources.h"
 
 class FileFd;
 
+
 class CacheDB
 {
    protected:
@@ -65,10 +67,16 @@ class CacheDB
       return true;
    }
    bool OpenFile();
+   void CloseFile();
+
+   bool OpenDebFile();
+   void CloseDebFile();
+
    bool GetFileStat(bool const &doStat = false);
    bool GetCurStat();
    bool LoadControl();
    bool LoadContents(bool const &GenOnly);
+   bool LoadSource();
    bool GetMD5(bool const &GenOnly);
    bool GetSHA1(bool const &GenOnly);
    bool GetSHA256(bool const &GenOnly);
@@ -77,7 +85,8 @@ class CacheDB
    // Stat info stored in the DB, Fixed types since it is written to disk.
    enum FlagList {FlControl = (1<<0),FlMD5=(1<<1),FlContents=(1<<2),
                   FlSize=(1<<3), FlSHA1=(1<<4), FlSHA256=(1<<5), 
-                  FlSHA512=(1<<6)};
+                  FlSHA512=(1<<6), FlSource=(1<<7),
+   };
 
    struct StatStore
    {
@@ -101,6 +110,8 @@ class CacheDB
    // Data collection helpers
    debDebFile::MemControlExtract Control;
    ContentsExtract Contents;
+   DscExtract Dsc;
+
    std::string MD5Res;
    std::string SHA1Res;
    std::string SHA256Res;
@@ -139,8 +150,19 @@ class CacheDB
    inline unsigned long long GetFileSize(void) {return CurStat.FileSize;}
    
    bool SetFile(std::string const &FileName,struct stat St,FileFd *Fd);
-   bool GetFileInfo(std::string const &FileName, bool const &DoControl, bool const &DoContents, bool const &GenContentsOnly,
-		    bool const &DoMD5, bool const &DoSHA1, bool const &DoSHA256, bool const &DoSHA512, bool const &checkMtime = false);
+
+   // terrible old overloaded interface
+   bool GetFileInfo(std::string const &FileName, 
+                    bool const &DoControl, 
+                    bool const &DoContents, 
+                    bool const &GenContentsOnly, 
+                    bool const &DoSource,
+		    bool const &DoMD5, 
+                    bool const &DoSHA1, 
+                    bool const &DoSHA256, 
+                    bool const &DoSHA512, 
+                    bool const &checkMtime = false);
+
    bool Finish();   
    
    bool Clean();
diff --git a/ftparchive/makefile b/ftparchive/makefile
index c53ecff72..d1ffe182a 100644
--- a/ftparchive/makefile
+++ b/ftparchive/makefile
@@ -12,7 +12,7 @@ PROGRAM=apt-ftparchive
 SLIBS = -lapt-pkg -lapt-inst $(BDBLIB) $(INTLLIBS)
 LIB_MAKES = apt-pkg/makefile apt-inst/makefile
 SOURCE = apt-ftparchive.cc cachedb.cc writer.cc contents.cc override.cc \
-         multicompress.cc
+         multicompress.cc sources.cc
 include $(PROGRAM_H)
 else
 PROGRAM=apt-ftparchive
diff --git a/ftparchive/sources.cc b/ftparchive/sources.cc
new file mode 100644
index 000000000..d0878a70a
--- /dev/null
+++ b/ftparchive/sources.cc
@@ -0,0 +1,47 @@
+#include <string>
+#include <iostream>
+
+// for memcpy
+#include <cstring>
+
+#include <apt-pkg/error.h>
+#include <apt-pkg/gpgv.h>
+
+#include "sources.h"
+
+bool DscExtract::TakeDsc(const void *newData, unsigned long newSize)
+{
+   if(newSize > maxSize)
+     return _error->Error("DSC data is too large %lu!", newSize);
+
+   if (newSize == 0)
+   {
+      Length = 0;
+      return true;
+   }
+   memcpy(Data, newData, newSize);
+   Length = newSize;
+
+   return true;
+}
+
+bool DscExtract::Read(std::string FileName)
+{
+   FileFd F;
+   if (OpenMaybeClearSignedFile(FileName, F) == false)
+      return false;
+   
+   unsigned long long const FSize = F.FileSize();
+   if(FSize > maxSize)
+     return _error->Error("DSC file '%s' is too large!",FileName.c_str());
+
+   if (F.Read(Data, FSize) == false)
+      return false;
+   Length = FSize;
+
+   IsClearSigned = (FileName != F.Name());
+
+   return true;
+}
+
+
diff --git a/ftparchive/sources.h b/ftparchive/sources.h
new file mode 100644
index 000000000..91e0b1376
--- /dev/null
+++ b/ftparchive/sources.h
@@ -0,0 +1,32 @@
+#ifndef SOURCES_H
+#define SOURCES_H
+
+#include <apt-pkg/tagfile.h>
+
+class DscExtract 
+{
+ public:
+   //FIXME: do we really need to enforce a maximum size of the dsc file?
+   static const int maxSize = 128*1024;
+
+   char *Data;
+   pkgTagSection Section;
+   unsigned long Length;
+   bool IsClearSigned;
+
+   bool TakeDsc(const void *Data, unsigned long Size);
+   bool Read(std::string FileName);
+   
+   DscExtract() : Data(0), Length(0) {
+     Data = new char[maxSize];
+   };
+   ~DscExtract() { 
+      if(Data != NULL) {
+         delete [] Data;
+         Data = NULL;
+      } 
+   };
+};
+
+
+#endif
diff --git a/ftparchive/writer.cc b/ftparchive/writer.cc
index 153c4fb42..7c1c9cc03 100644
--- a/ftparchive/writer.cc
+++ b/ftparchive/writer.cc
@@ -385,10 +385,14 @@ bool FTWScanner::SetExts(string const &Vals)
 bool PackagesWriter::DoPackage(string FileName)
 {      
    // Pull all the data we need form the DB
-   if (Db.GetFileInfo(FileName, true, DoContents, true, DoMD5, DoSHA1, DoSHA256, DoSHA512, DoAlwaysStat)
-		  == false)
+   if (Db.GetFileInfo(FileName, 
+                      true,   /* DoControl */
+                      DoContents, 
+                      true,   /* GenContentsOnly */
+                      false,  /* DoSource */
+                      DoMD5, DoSHA1, DoSHA256, DoSHA512, DoAlwaysStat) == false)
    {
-      return false;
+     return false;
    }
 
    unsigned long long FileSize = Db.GetFileSize();
@@ -614,59 +618,36 @@ SourcesWriter::SourcesWriter(string const &DB, string const &BOverrides,string c
 /* */
 bool SourcesWriter::DoPackage(string FileName)
 {
-   // Open the archive
-   FileFd F;
-   if (OpenMaybeClearSignedFile(FileName, F) == false)
-      return false;
-
-   unsigned long long const FSize = F.FileSize();
-   //FIXME: do we really need to enforce a maximum size of the dsc file?
-   if (FSize > 128*1024)
-      return _error->Error("DSC file '%s' is too large!",FileName.c_str());
-
-   if (BufSize < FSize + 2)
+   // Pull all the data we need form the DB
+   if (Db.GetFileInfo(FileName,
+                      false,  /* DoControl */
+                      false,  /* DoContents */
+                      false,  /* GenContentsOnly */
+                      true,   /* DoSource */
+                      DoMD5, DoSHA1, DoSHA256, DoSHA512, DoAlwaysStat) == false)
    {
-      BufSize = FSize + 2;
-      Buffer = (char *)realloc(Buffer , BufSize);
-   }
-
-   if (F.Read(Buffer, FSize) == false)
       return false;
+   }
 
-   // Stat the file for later (F might be clearsigned, so not F.FileSize())
-   struct stat St;
-   if (stat(FileName.c_str(), &St) != 0)
-      return _error->Errno("fstat","Failed to stat %s",FileName.c_str());
+   // we need to perform a "write" here (this is what finish is doing)
+   // because the call to Db.GetFileInfo() in the loop will change
+   // the "db cursor"
+   Db.Finish();
 
-   // Hash the file
-   char *Start = Buffer;
-   char *BlkEnd = Buffer + FSize;
-
-   Hashes DscHashes;
-   if (FSize == (unsigned long long) St.st_size)
-   {
-      if (DoMD5 == true)
-	 DscHashes.MD5.Add((unsigned char *)Start,BlkEnd - Start);
-      if (DoSHA1 == true)
-	 DscHashes.SHA1.Add((unsigned char *)Start,BlkEnd - Start);
-      if (DoSHA256 == true)
-	 DscHashes.SHA256.Add((unsigned char *)Start,BlkEnd - Start);
-      if (DoSHA512 == true)
-	 DscHashes.SHA512.Add((unsigned char *)Start,BlkEnd - Start);
-   }
-   else
-   {
-      FileFd DscFile(FileName, FileFd::ReadOnly);
-      DscHashes.AddFD(DscFile, St.st_size, DoMD5, DoSHA1, DoSHA256, DoSHA512);
-   }
+   // read stuff
+   char *Start = Db.Dsc.Data;
+   char *BlkEnd = Db.Dsc.Data + Db.Dsc.Length;
 
    // Add extra \n to the end, just in case (as in clearsigned they are missing)
    *BlkEnd++ = '\n';
    *BlkEnd++ = '\n';
 
    pkgTagSection Tags;
-   if (Tags.Scan(Start,BlkEnd - Start) == false || Tags.Exists("Source") == false)
+   if (Tags.Scan(Start,BlkEnd - Start) == false)
       return _error->Error("Could not find a record in the DSC '%s'",FileName.c_str());
+   
+   if (Tags.Exists("Source") == false)
+      return _error->Error("Could not find a Source entry in the DSC '%s'",FileName.c_str());
    Tags.Trim();
 
    // Lookup the overide information, finding first the best priority.
@@ -714,6 +695,10 @@ bool SourcesWriter::DoPackage(string FileName)
       OverItem = auto_ptr<Override::Item>(new Override::Item);
    }
    
+   struct stat St;
+   if (stat(FileName.c_str(), &St) != 0)
+      return _error->Errno("fstat","Failed to stat %s",FileName.c_str());
+
    auto_ptr<Override::Item> SOverItem(SOver.GetItem(Tags.FindS("Source")));
    // const auto_ptr<Override::Item> autoSOverItem(SOverItem);
    if (SOverItem.get() == 0)
@@ -732,23 +717,23 @@ bool SourcesWriter::DoPackage(string FileName)
    string const strippedName = flNotDir(FileName);
    std::ostringstream ostreamFiles;
    if (DoMD5 == true && Tags.Exists("Files"))
-      ostreamFiles << "\n " << string(DscHashes.MD5.Result()) << " " << St.st_size << " "
+      ostreamFiles << "\n " << Db.MD5Res.c_str() << " " << St.st_size << " "
 		   << strippedName << "\n " << Tags.FindS("Files");
    string const Files = ostreamFiles.str();
 
    std::ostringstream ostreamSha1;
    if (DoSHA1 == true && Tags.Exists("Checksums-Sha1"))
-      ostreamSha1 << "\n " << string(DscHashes.SHA1.Result()) << " " << St.st_size << " "
+      ostreamSha1 << "\n " << string(Db.SHA1Res.c_str()) << " " << St.st_size << " "
 		   << strippedName << "\n " << Tags.FindS("Checksums-Sha1");
 
    std::ostringstream ostreamSha256;
    if (DoSHA256 == true && Tags.Exists("Checksums-Sha256"))
-      ostreamSha256 << "\n " << string(DscHashes.SHA256.Result()) << " " << St.st_size << " "
+      ostreamSha256 << "\n " << string(Db.SHA256Res.c_str()) << " " << St.st_size << " "
 		   << strippedName << "\n " << Tags.FindS("Checksums-Sha256");
 
    std::ostringstream ostreamSha512;
    if (DoSHA512 == true && Tags.Exists("Checksums-Sha512"))
-      ostreamSha512 << "\n " << string(DscHashes.SHA512.Result()) << " " << St.st_size << " "
+      ostreamSha512 << "\n " << string(Db.SHA512Res.c_str()) << " " << St.st_size << " "
 		   << strippedName << "\n " << Tags.FindS("Checksums-Sha512");
 
    // Strip the DirStrip prefix from the FileName and add the PathPrefix
@@ -785,8 +770,13 @@ bool SourcesWriter::DoPackage(string FileName)
           (DoSHA256 == true && !Tags.Exists("Checksums-Sha256")) ||
           (DoSHA512 == true && !Tags.Exists("Checksums-Sha512")))
       {
-         if (Db.GetFileInfo(OriginalPath, false, false, false, DoMD5, DoSHA1, DoSHA256, DoSHA512, DoAlwaysStat)
-               == false)
+         if (Db.GetFileInfo(OriginalPath, 
+                            false, /* DoControl */
+                            false, /* DoContents */
+                            false, /* GenContentsOnly */
+                            false, /* DoSource */
+                            DoMD5, DoSHA1, DoSHA256, DoSHA512,
+                            DoAlwaysStat) == false)
          {
             return _error->Error("Error getting file info");
          }
@@ -802,6 +792,9 @@ bool SourcesWriter::DoPackage(string FileName)
          if (DoSHA512 == true && !Tags.Exists("Checksums-Sha512"))
             ostreamSha512 << "\n " << string(Db.SHA512Res) << " "
                << Db.GetFileSize() << " " << ParseJnk;
+
+         // write back the GetFileInfo() stats data 
+         Db.Finish();
       }
 
       // Perform the delinking operation
@@ -872,7 +865,7 @@ bool SourcesWriter::DoPackage(string FileName)
 
    Stats.Packages++;
    
-   return Db.Finish();
+   return true;
 }
 									/*}}}*/
 
@@ -893,7 +886,15 @@ ContentsWriter::ContentsWriter(string const &DB, string const &Arch) :
    determine what the package name is. */
 bool ContentsWriter::DoPackage(string FileName, string Package)
 {
-   if (!Db.GetFileInfo(FileName, Package.empty(), true, false, false, false, false, false))
+   if (!Db.GetFileInfo(FileName, 
+                       Package.empty(), /* DoControl */
+                       true,            /* DoContents */
+                       false,           /* GenContentsOnly */
+                       false,           /* DoSource */
+                       false,           /* DoMD5 */
+                       false,           /* DoSHA1 */
+                       false,           /* DoSHA256 */
+                       false))          /* DoSHA512 */
    {
       return false;
    }
diff --git a/ftparchive/writer.h b/ftparchive/writer.h
index 86884dcfc..b1a653e7d 100644
--- a/ftparchive/writer.h
+++ b/ftparchive/writer.h
@@ -174,7 +174,7 @@ class SourcesWriter : public FTWScanner
    string PathPrefix;
    string DirStrip;
    FILE *Output;
-   struct CacheDB::Stats Stats;
+   struct CacheDB::Stats &Stats;
 
    virtual bool DoPackage(string FileName);
 
diff --git a/test/integration/framework b/test/integration/framework
index 1c6f041b0..fae21eac4 100644
--- a/test/integration/framework
+++ b/test/integration/framework
@@ -128,7 +128,10 @@ dpkgcheckbuilddeps() {
 }
 gdb() {
 	echo "gdb: run »$*«"
-	APT_CONFIG=aptconfig.conf LD_LIBRARY_PATH=${LIBRARYPATH} command gdb ${BUILDDIRECTORY}/$1 --args "$@"
+	CMD="$1"
+	shift
+
+	APT_CONFIG=aptconfig.conf LD_LIBRARY_PATH=${LIBRARYPATH} command gdb ${BUILDDIRECTORY}/$CMD --args ${BUILDDIRECTORY}/$CMD "$@"
 }
 gpg() {
 	# see apt-key for the whole trickery. Setup is done in setupenvironment
diff --git a/test/integration/test-apt-ftparchive b/test/integration/test-apt-ftparchive
new file mode 100755
index 000000000..b05c15c47
--- /dev/null
+++ b/test/integration/test-apt-ftparchive
@@ -0,0 +1,164 @@
+#!/bin/sh
+set -e
+
+assert_correct_sources_file() {
+    testequal "Package: bar
+Binary: bar
+Version: 1.0
+Architecture: all
+Format: 3.0 (native)
+Directory: pool/main
+Files:
+ 7b57dd065e51de5905288a5104d4bef5 406 bar_1.0.dsc
+ d41d8cd98f00b204e9800998ecf8427e 0 bar_1.0.tar.gz
+Package-List:
+ bar deb admin extra
+Checksums-Sha1:
+ 17a40b76715f393ab7fd6485c9392a02f1adf903 406 bar_1.0.dsc
+ da39a3ee5e6b4b0d3255bfef95601890afd80709 0 bar_1.0.tar.gz
+Checksums-Sha256:
+ d9d7507f66a89258b6920aca47747d7a30e0e64b09ecabbf02b2efbdabf840a9 406 bar_1.0.dsc
+ e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855 0 bar_1.0.tar.gz
+Checksums-Sha512:
+ ee0a9bfb6614159b45203fc29487d4f37387993ca0e6d6f27b80010498f3731d75753188ece307508ae9af0259bd11a6af15a1a38f0b87dbd5ea1273b7a7d53e 406 bar_1.0.dsc
+ cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e 0 bar_1.0.tar.gz
+
+Package: foo
+Binary: foo
+Version: 1.0
+Architecture: all
+Format: 3.0 (native)
+Directory: pool/main
+Files:
+ d144826e6f02831c1933e910c92cd7e0 171 foo_1.0.dsc
+ d41d8cd98f00b204e9800998ecf8427e 0 foo_1.0.tar.gz
+Package-List: 
+ foo deb admin extra
+Checksums-Sha1:
+ 979306aa3ccff3d61bba062bb6977e2493c6f907 171 foo_1.0.dsc
+ da39a3ee5e6b4b0d3255bfef95601890afd80709 0 foo_1.0.tar.gz
+Checksums-Sha256:
+ 8c780af8b5a6d5b3c2e2f9518940beebea52ac6d6ad7b52c082dc925cfe5b532 171 foo_1.0.dsc
+ e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855 0 foo_1.0.tar.gz
+Checksums-Sha512:
+ 3da0240fd764657c2f3661b4d750578a9a99b0580591b133756379d48117ebda87a5ed2467f513200d6e7eaf51422cbe91c15720eef7fb4bba2cc8ff81ebc547 171 foo_1.0.dsc
+ cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e 0 foo_1.0.tar.gz
+" cat ./aptarchive/dists/test/main/source/Sources
+}
+
+create_source_files() {
+    NAME="$1"
+    REQUEST_CLEARSIGN="$2"
+    
+    TARFILE="aptarchive/pool/main/${NAME}_1.0.tar.gz"
+    DSC_FILE="aptarchive/pool/main/${NAME}_1.0.dsc"
+    touch $TARFILE
+    if [ "$REQUEST_CLEARSIGN" = "CLEARSIGN" ]; then
+        printf -- "-----BEGIN PGP SIGNED MESSAGE-----\n\n" > $DSC_FILE
+    fi
+    cat >> $DSC_FILE << EOF
+Format: 3.0 (native)
+Source: $NAME
+Binary: $NAME
+Architecture: all
+Version: 1.0
+Package-List: 
+ $NAME deb admin extra
+Files: 
+ $(md5sum $TARFILE|cut -f1 -d' ') $(stat --print="%s" $TARFILE) ${NAME}_1.0.tar.gz
+EOF
+    if [ "$REQUEST_CLEARSIGN" = "CLEARSIGN" ]; then
+        cat >> $DSC_FILE <<EOF
+
+-----BEGIN PGP SIGNATURE-----
+Version: GnuPG v1.4.11 (GNU/Linux)
+
+iEYEARECAAYFAk3k/VoACgkQliSD4VZixzQxlgCgpav7j68z48qNTDFuT9fLqwT5
+DFwAoIXatJFENEC371bMKTkUKlwZxQEk
+=iI9V
+-----END PGP SIGNATURE-----
+EOF
+    fi
+}
+
+create_clearsigned_source_files() {
+    NAME="$1"
+    create_source_files "$NAME" "CLEARSIGN"
+}
+
+#
+# main()
+#
+TESTDIR=$(readlink -f $(dirname $0))
+. $TESTDIR/framework
+setupenvironment
+configarchitecture "i386"
+
+msgtest 'Test apt-ftparchive source with missing hashes in .dsc'
+
+mkdir -p aptarchive/pool/main
+create_source_files foo
+create_clearsigned_source_files bar
+
+mkdir -p aptarchive/dists/test/main/i18n/
+mkdir -p aptarchive/dists/test/main/source/
+
+mkdir aptarchive-overrides
+mkdir aptarchive-cache
+cat > apt-ftparchive.conf <<"EOF"
+Dir {
+  ArchiveDir "./aptarchive";
+  OverrideDir "./aptarchive-overrides";
+  CacheDir "./aptarchive-cache";
+};
+
+Default {
+ Packages::Compress ". gzip bzip2";
+ Contents::Compress ". gzip bzip2";
+ LongDescription "false";
+};
+
+TreeDefault {
+ BinCacheDB "packages-$(SECTION)-$(ARCH).db";
+ SrcCacheDB "sources-$(SECTION).db";
+
+ Directory  "pool/$(SECTION)";
+ SrcDirectory "pool/$(SECTION)";
+
+ Packages   "$(DIST)/$(SECTION)/binary-$(ARCH)/Packages";
+ Sources    "$(DIST)/$(SECTION)/source/Sources";
+ Contents    "$(DIST)/Contents-$(ARCH)";
+};
+
+Tree "dists/test" {
+  Sections "main";
+  Architectures "source";
+
+};
+EOF
+
+
+# generate (no cachedb)
+aptftparchive generate apt-ftparchive.conf -o APT::FTPArchive::ShowCacheMisses=1 2> stats-out.txt
+testequal " Misses in Cache: 2" grep Misses stats-out.txt
+assert_correct_sources_file
+
+
+# generate again out of the cache
+rm -f ./aptarchive/dists/test/main/source/Sources
+aptftparchive generate apt-ftparchive.conf -o APT::FTPArchive::ShowCacheMisses=1  2> stats-out.txt
+testequal " Misses in Cache: 0" grep Misses stats-out.txt
+assert_correct_sources_file
+
+# generate invalid files
+mkdir aptarchive/pool/invalid
+printf "meep" > aptarchive/pool/invalid/invalid_1.0.dsc
+testequal "
+E: Could not find a Source entry in the DSC 'aptarchive/pool/invalid/invalid_1.0.dsc'" aptftparchive sources aptarchive/pool/invalid
+rm -f aptarchive/pool/invalid/invalid_1.0.dsc
+
+dd if=/dev/zero of="aptarchive/pool/invalid/toobig_1.0.dsc" bs=1k count=129 2>/dev/null
+testequal "
+E: DSC file 'aptarchive/pool/invalid/toobig_1.0.dsc' is too large!" aptftparchive sources aptarchive/pool/invalid
+
+