From 54f2f0a3e46e4369285be8c25912fd45413114c0 Mon Sep 17 00:00:00 2001
From: Nobuhiro Hayashi <nobuhiro.hayashi@gmail.com>
Date: Fri, 3 Dec 2010 12:09:09 +0900
Subject: Permit base256 encoded value in the numeric field of tar header.

---
 apt-pkg/contrib/strutl.cc | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

(limited to 'apt-pkg/contrib/strutl.cc')

diff --git a/apt-pkg/contrib/strutl.cc b/apt-pkg/contrib/strutl.cc
index 987f4c3a4..daf87c87f 100644
--- a/apt-pkg/contrib/strutl.cc
+++ b/apt-pkg/contrib/strutl.cc
@@ -968,6 +968,24 @@ bool StrToNum(const char *Str,unsigned long &Res,unsigned Len,unsigned Base)
    return true;
 }
 									/*}}}*/
+// Base256ToNum - Convert a fixed length binary to a number             /*{{{*/
+// ---------------------------------------------------------------------
+/* This is used in decoding the 256bit encoded fixed length fields in
+   tar files */
+bool Base256ToNum(const char *Str,unsigned long &Res,unsigned Len)
+{
+   int i;
+   if ((Str[0] & 0x80) == 0)
+      return false;
+   else
+   {
+      Res = Str[0] & 0x7F;
+      for(i=1; i<Len; i++)
+         Res = (Res<<8) + Str[i];
+      return true;
+   }
+}
+									/*}}}*/
 // HexDigit - Convert a hex character into an integer			/*{{{*/
 // ---------------------------------------------------------------------
 /* Helper for Hex2Num */
-- 
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