From d9666cf046a8453b33b3e2fbf4d82295a9f87df3 Mon Sep 17 00:00:00 2001
From: Igor Pavlov <ipavlov@users.sourceforge.net>
Date: Sat, 20 Jan 2007 00:00:00 +0000
Subject: 4.44 beta

---
 CPP/7zip/Archive/RPM/RpmIn.cpp | 112 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 112 insertions(+)
 create mode 100755 CPP/7zip/Archive/RPM/RpmIn.cpp

(limited to 'CPP/7zip/Archive/RPM/RpmIn.cpp')

diff --git a/CPP/7zip/Archive/RPM/RpmIn.cpp b/CPP/7zip/Archive/RPM/RpmIn.cpp
new file mode 100755
index 00000000..c1600894
--- /dev/null
+++ b/CPP/7zip/Archive/RPM/RpmIn.cpp
@@ -0,0 +1,112 @@
+// Archive/RpmIn.cpp
+
+#include "StdAfx.h"
+
+#include "RpmIn.h"
+
+#include "RpmHeader.h"
+
+#include "Windows/Defs.h"
+#include "Common/MyCom.h"
+
+#include "../../Common/StreamUtils.h"
+
+namespace NArchive {
+namespace NRpm {
+
+static UInt16 GetUInt16(const char *data)
+{
+  return (UInt16)((Byte)data[1] | (((UInt16)(Byte)data[0]) << 8));
+}
+
+static UInt32 GetUInt32(const char *data)
+{
+  return 
+      ((UInt32)(Byte)data[3]) |
+      (((UInt32)(Byte)data[2]) << 8) |
+      (((UInt32)(Byte)data[1]) << 16) |
+      (((UInt32)(Byte)data[0]) << 24);
+}
+
+static HRESULT RedSigHeaderSig(IInStream *inStream, CSigHeaderSig &h)
+{
+  char dat[kCSigHeaderSigSize];
+  char *cur = dat;
+  UInt32 processedSize;
+  RINOK(ReadStream(inStream, dat, kCSigHeaderSigSize, &processedSize));
+  if (kCSigHeaderSigSize != processedSize)
+    return S_FALSE;
+  memmove(h.Magic, cur, 4);
+  cur += 4;
+  cur += 4;
+  h.IndexLen = GetUInt32(cur);
+  cur += 4;
+  h.DataLen = GetUInt32(cur);
+  return S_OK;
+}
+
+HRESULT OpenArchive(IInStream *inStream)
+{
+  UInt64 pos;
+  char leadData[kLeadSize];
+  char *cur = leadData;
+  CLead lead;
+  UInt32 processedSize;
+  RINOK(ReadStream(inStream, leadData, kLeadSize, &processedSize));
+  if (kLeadSize != processedSize)
+    return S_FALSE;
+  memmove(lead.Magic, cur, 4);
+  cur += 4;
+  lead.Major = *cur++;
+  lead.Minor = *cur++;
+  lead.Type = GetUInt16(cur);
+  cur += 2;
+  lead.ArchNum = GetUInt16(cur);
+  cur += 2;
+  memmove(lead.Name, cur, sizeof(lead.Name));
+  cur += sizeof(lead.Name);
+  lead.OSNum = GetUInt16(cur);
+  cur += 2;
+  lead.SignatureType = GetUInt16(cur);
+  cur += 2;
+
+  if (!lead.MagicCheck() || lead.Major < 3)
+    return S_FALSE;
+
+  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(RedSigHeaderSig(inStream, sigHeader));
+    if(!sigHeader.MagicCheck())
+      return S_FALSE;
+    UInt32 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(RedSigHeaderSig(inStream, header));
+  if(!header.MagicCheck())
+    return S_FALSE;
+  int headerLen = header.GetLostHeaderLen();
+  if(headerLen == -1)
+    return S_FALSE;
+  RINOK(inStream->Seek(headerLen, STREAM_SEEK_CUR, &pos));
+  return S_OK;
+}
+
+}}
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