3.13

7zip/Archive/RPM/RpmIn.cpp

@@ -0,0 +1,70 @@
+// Archive/RpmIn.cpp
+
+#include "StdAfx.h"
+
+#include "RpmIn.h"
+
+#include "RpmHeader.h"
+
+#include "Windows/Defs.h"
+#include "Common/MyCom.h"
+
+namespace NArchive {
+namespace NRpm {
+ 
+HRESULT OpenArchive(IInStream *inStream)
+{
+  UINT64 pos;
+  CLead lead;
+  UINT32 processedSize;
+  RINOK(inStream->Read(&lead, sizeof(lead), &processedSize));
+  if (sizeof(lead) != processedSize)
+    return S_FALSE;
+  if (!lead.MagicCheck() || lead.Major < 3)
+    return S_FALSE;
+  lead.hton();
+
+  CSigHeaderSig sigHeader, header;
+  if(lead.SignatureType == RPMSIG_NONE)
+  {
+    ;
+  }
+  else if(lead.SignatureType == RPMSIG_PGP262_1024)
+  {
+    UINT64 pos;
+    RINOK(inStream->Seek(256, STREAM_SEEK_CUR, &pos));
+  }
+  else if(lead.SignatureType == RPMSIG_HEADERSIG)
+  {
+    RINOK(inStream->Read(&sigHeader, sizeof(sigHeader), &processedSize));
+    if (sizeof(sigHeader) != processedSize)
+      return S_FALSE;
+    if(!sigHeader.MagicCheck())
+      return S_FALSE;
+    sigHeader.hton();
+    int len = sigHeader.GetLostHeaderLen();
+    RINOK(inStream->Seek(len, STREAM_SEEK_CUR, &pos));
+    if((pos % 8) != 0)
+    {
+      RINOK(inStream->Seek((pos / 8 + 1) * 8 - pos, 
+          STREAM_SEEK_CUR, &pos));
+    }
+  }
+  else
+    return S_FALSE;
+
+  RINOK(inStream->Read(&header, sizeof(header), &processedSize));
+  if (sizeof(header) != processedSize)
+    return S_FALSE;
+  if(!header.MagicCheck())
+    return S_FALSE;
+  header.hton();
+  int headerLen = header.GetLostHeaderLen();
+  if(headerLen == -1)
+    return S_FALSE;
+  RINOK(inStream->Seek(headerLen, STREAM_SEEK_CUR, &pos));
+  return S_OK;
+}
+
+
+}}