Merge remote-tracking branch 'mvo/feature/apt-ftparchive-srccache2' into ubuntu/trusty

1 files changed, 177 insertions, 131 deletions

diff --git a/ftparchive/cachedb.cc b/ftparchive/cachedb.cc
index 523c6b5fa..e56deae1e 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>
@@ -96,14 +97,54 @@ bool CacheDB::ReadyDB(std::string const &DB)
 /* */
 bool CacheDB::OpenFile()
 {
-	Fd = new FileFd(FileName,FileFd::ReadOnly);
-	if (_error->PendingError() == true)
-	{
-		delete Fd;
-		Fd = NULL;
-		return false;
-	}
-	return true;
+   // always close existing file first
+   CloseFile();
+
+   // open a new file
+   Fd = new FileFd(FileName,FileFd::ReadOnly);
+   if (_error->PendingError() == true)
+   {
+      CloseFile();
+      return false;
+   }
+   return true;
+}
+									/*}}}*/
+// CacheDB::CloseFile - Close the file					/*{{{*/
+void CacheDB::CloseFile()
+{
+   if(Fd != NULL)
+   {
+      delete Fd;
+      Fd = NULL;
+   }
+}
+									/*}}}*/
+// CacheDB::OpenDebFile - Open a debfile				/*{{{*/
+bool CacheDB::OpenDebFile()
+{
+   // always close existing file first
+   CloseDebFile();
+
+   // first open the fd, then pass it to the debDebFile
+   if(OpenFile() == false)
+      return false;
+   DebFile = new debDebFile(*Fd);
+   if (_error->PendingError() == true)
+      return false;
+   return true;
+}
+									/*}}}*/
+// CacheDB::CloseDebFile - Close a debfile again 			/*{{{*/
+void CacheDB::CloseDebFile()
+{
+   CloseFile();
+
+   if(DebFile != NULL)
+   {
+      delete DebFile;
+      DebFile = NULL;
+   }
 }
 									/*}}}*/
 // CacheDB::GetFileStat - Get stats from the file 			/*{{{*/
@@ -112,29 +153,26 @@ bool CacheDB::OpenFile()
  * to look at the file, also get the mtime from the file. */
 bool CacheDB::GetFileStat(bool const &doStat)
 {
-	if ((CurStat.Flags & FlSize) == FlSize && doStat == false)
-	{
-		/* Already worked out the file size */
-	}
-	else
-	{
-		/* Get it from the file. */
-		if (Fd == NULL && OpenFile() == false)
-		{
-			return false;
-		}
-		// Stat the file
-		struct stat St;
-		if (fstat(Fd->Fd(),&St) != 0)
-		{
-			return _error->Errno("fstat",
-				_("Failed to stat %s"),FileName.c_str());
-		}
-		CurStat.FileSize = St.st_size;
-		CurStat.mtime = htonl(St.st_mtime);
-		CurStat.Flags |= FlSize;
-	}
-	return true;
+   if ((CurStat.Flags & FlSize) == FlSize && doStat == false)
+      return true;
+
+   /* Get it from the file. */
+   if (OpenFile() == false)
+      return false;
+   
+   // Stat the file
+   struct stat St;
+   if (fstat(Fd->Fd(),&St) != 0)
+   {
+      CloseFile();
+      return _error->Errno("fstat",
+                           _("Failed to stat %s"),FileName.c_str());
+   }
+   CurStat.FileSize = St.st_size;
+   CurStat.mtime = htonl(St.st_mtime);
+   CurStat.Flags |= FlSize;
+   
+   return true;
 }
 									/*}}}*/
 // CacheDB::GetCurStat - Set the CurStat variable.			/*{{{*/
@@ -145,79 +183,100 @@ bool CacheDB::GetCurStat()
 {
    memset(&CurStat,0,sizeof(CurStat));
    
-	if (DBLoaded)
-	{
-		/* First see if there is anything about it
-		   in the database */
-
-		/* Get the flags (and mtime) */
-   InitQuery("st");
-   // Ensure alignment of the returned structure
-   Data.data = &CurStat;
-   Data.ulen = sizeof(CurStat);
-   Data.flags = DB_DBT_USERMEM;
-		if (Get() == false)
+   if (DBLoaded)
+   {
+      /* First see if there is anything about it
+         in the database */
+      
+      /* Get the flags (and mtime) */
+      InitQueryStats();
+      // Ensure alignment of the returned structure
+      Data.data = &CurStat;
+      Data.ulen = sizeof(CurStat);
+      Data.flags = DB_DBT_USERMEM;
+      if (Get() == false)
       {
 	 CurStat.Flags = 0;
       }      
-		CurStat.Flags = ntohl(CurStat.Flags);
-		CurStat.FileSize = ntohl(CurStat.FileSize);
+      CurStat.Flags = ntohl(CurStat.Flags);
+      CurStat.FileSize = ntohl(CurStat.FileSize);
    }      
-	return true;
+   return true;
 }
 									/*}}}*/
 // 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)
-   {
-		return false;
-   }   
+   if (GetCurStat() == false)
+      return false;
    OldStat = CurStat;
 
-	if (GetFileStat(checkMtime) == false)
-	{
-		delete Fd;
-		Fd = NULL;
-		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;	
-	}
-
-	delete Fd;
-	Fd = NULL;
-	delete DebFile;
-	DebFile = NULL;
+   if (GetFileStat(checkMtime) == false)
+      return false;	
 
-   return true;
+   /* 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)
+       || (DoSource && LoadSource() == false)
+       || (DoMD5 && GetMD5(false) == false)
+       || (DoSHA1 && GetSHA1(false) == false)
+       || (DoSHA256 && GetSHA256(false) == false)
+       || (DoSHA512 && GetSHA512(false) == false) )
+   {
+      result = false;
+   }
+    
+   return result;
 }
 									/*}}}*/
+
+bool CacheDB::LoadSource()
+{
+   // Try to read the control information out of the DB.
+   if ((CurStat.Flags & FlSource) == FlSource)
+   {
+      // Lookup the control information
+      InitQuerySource();
+      if (Get() == true && Dsc.TakeDsc(Data.data, Data.size) == true)
+      {
+	    return true;
+      }
+      CurStat.Flags &= ~FlSource;
+   }
+   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
+   InitQuerySource();
+   if (Put(Dsc.Data, Dsc.Length) == true)
+      CurStat.Flags |= FlSource;
+
+   return true;
+}
+
 // CacheDB::LoadControl - Load Control information			/*{{{*/
 // ---------------------------------------------------------------------
 /* */
@@ -227,23 +286,14 @@ bool CacheDB::LoadControl()
    if ((CurStat.Flags & FlControl) == FlControl)
    {
       // Lookup the control information
-      InitQuery("cl");
+      InitQueryControl();
       if (Get() == true && Control.TakeControl(Data.data,Data.size) == true)
 	    return true;
       CurStat.Flags &= ~FlControl;
    }
    
-   if (Fd == NULL && OpenFile() == false)
-   {
+   if(OpenDebFile() == false)
       return false;
-   }
-   // Create a deb instance to read the archive
-   if (DebFile == 0)
-   {
-      DebFile = new debDebFile(*Fd);
-      if (_error->PendingError() == true)
-	 return false;
-   }
    
    Stats.Misses++;
    if (Control.Read(*DebFile) == false)
@@ -253,7 +303,7 @@ bool CacheDB::LoadControl()
       return _error->Error(_("Archive has no control record"));
    
    // Write back the control information
-   InitQuery("cl");
+   InitQueryControl();
    if (Put(Control.Control,Control.Length) == true)
       CurStat.Flags |= FlControl;
    return true;
@@ -271,7 +321,7 @@ bool CacheDB::LoadContents(bool const &GenOnly)
 	 return true;
       
       // Lookup the contents information
-      InitQuery("cn");
+      InitQueryContent();
       if (Get() == true)
       {
 	 if (Contents.TakeContents(Data.data,Data.size) == true)
@@ -281,23 +331,15 @@ bool CacheDB::LoadContents(bool const &GenOnly)
       CurStat.Flags &= ~FlContents;
    }
    
-   if (Fd == NULL && OpenFile() == false)
-   {
+   if(OpenDebFile() == false)
       return false;
-   }
-   // Create a deb instance to read the archive
-   if (DebFile == 0)
-   {
-      DebFile = new debDebFile(*Fd);
-      if (_error->PendingError() == true)
-	 return false;
-   }
 
+   Stats.Misses++;
    if (Contents.Read(*DebFile) == false)
       return false;	    
    
    // Write back the control information
-   InitQuery("cn");
+   InitQueryContent();
    if (Put(Contents.Data,Contents.CurSize) == true)
       CurStat.Flags |= FlContents;
    return true;
@@ -347,14 +389,13 @@ bool CacheDB::GetMD5(bool const &GenOnly)
       
       MD5Res = bytes2hex(CurStat.MD5, sizeof(CurStat.MD5));
 	 return true;
-      }
+   }
    
    Stats.MD5Bytes += CurStat.FileSize;
 	 
-   if (Fd == NULL && OpenFile() == false)
-   {
+   if (OpenFile() == false)
       return false;
-   }
+
    MD5Summation MD5;
    if (Fd->Seek(0) == false || MD5.AddFD(*Fd, CurStat.FileSize) == false)
       return false;
@@ -382,10 +423,9 @@ bool CacheDB::GetSHA1(bool const &GenOnly)
    
    Stats.SHA1Bytes += CurStat.FileSize;
 	 
-   if (Fd == NULL && OpenFile() == false)
-   {
+   if (OpenFile() == false)
       return false;
-   }
+
    SHA1Summation SHA1;
    if (Fd->Seek(0) == false || SHA1.AddFD(*Fd, CurStat.FileSize) == false)
       return false;
@@ -413,10 +453,9 @@ bool CacheDB::GetSHA256(bool const &GenOnly)
    
    Stats.SHA256Bytes += CurStat.FileSize;
 	 
-   if (Fd == NULL && OpenFile() == false)
-   {
+   if (OpenFile() == false)
       return false;
-   }
+
    SHA256Summation SHA256;
    if (Fd->Seek(0) == false || SHA256.AddFD(*Fd, CurStat.FileSize) == false)
       return false;
@@ -444,10 +483,9 @@ bool CacheDB::GetSHA512(bool const &GenOnly)
    
    Stats.SHA512Bytes += CurStat.FileSize;
 	 
-   if (Fd == NULL && OpenFile() == false)
-   {
+   if (OpenFile() == false)
       return false;
-   }
+
    SHA512Summation SHA512;
    if (Fd->Seek(0) == false || SHA512.AddFD(*Fd, CurStat.FileSize) == false)
       return false;
@@ -467,11 +505,11 @@ bool CacheDB::Finish()
    if (CurStat.Flags == OldStat.Flags &&
        CurStat.mtime == OldStat.mtime)
       return true;
-   
+
    // Write the stat information
    CurStat.Flags = htonl(CurStat.Flags);
    CurStat.FileSize = htonl(CurStat.FileSize);
-   InitQuery("st");
+   InitQueryStats();
    Put(&CurStat,sizeof(CurStat));
    CurStat.Flags = ntohl(CurStat.Flags);
    CurStat.FileSize = ntohl(CurStat.FileSize);
@@ -504,16 +542,24 @@ bool CacheDB::Clean()
       {
          if (stringcmp(Colon + 1, (char *)Key.data+Key.size,"st") == 0 ||
              stringcmp(Colon + 1, (char *)Key.data+Key.size,"cl") == 0 ||
+             stringcmp(Colon + 1, (char *)Key.data+Key.size,"cs") == 0 ||
              stringcmp(Colon + 1, (char *)Key.data+Key.size,"cn") == 0)
 	 {
-            if (FileExists(std::string((const char *)Key.data,Colon)) == true)
-		continue;	     
+            std::string FileName = std::string((const char *)Key.data,Colon);
+            if (FileExists(FileName) == true) {
+		continue;
+            }
 	 }
       }
-      
       Cursor->c_del(Cursor,0);
    }
-   Dbp->compact(Dbp, NULL, NULL, NULL, NULL, DB_FREE_SPACE, NULL);
+   int res = Dbp->compact(Dbp, NULL, NULL, NULL, NULL, DB_FREE_SPACE, NULL);
+   if (res < 0)
+      _error->Warning("compact failed with result %i", res);
+
+   if(_config->FindB("Debug::APT::FTPArchive::Clean", false) == true)
+      Dbp->stat_print(Dbp, 0);
+
 
    return true;
 }