Initial commit for Encode/Decode.

utils/funcexp/func_encode.cpp

@@ -0,0 +1,73 @@
+#include <cstdlib>
+#include <string>
+using namespace std;
+
+#include "functor_str.h"
+#include "funchelpers.h"
+#include "functioncolumn.h"
+using namespace execplan;
+
+namespace funcexp
+{
+
+void Func_encode::hash_password(ulong *result, const char *password, uint password_len)
+{
+  ulong nr=1345345333L, add=7, nr2=0x12345671L;
+  ulong tmp;
+  const char *password_end= password + password_len;
+  for (; password < password_end; password++)
+  {
+    if (*password == ' ' || *password == '\t')
+      continue;
+    tmp= (ulong) (unsigned char) *password;
+    nr^= (((nr & 63)+add)*tmp)+ (nr << 8);
+    nr2+=(nr2 << 8) ^ nr;
+    add+=tmp;
+  }
+  result[0]=nr & (((ulong) 1L << 31) -1L);
+  result[1]=nr2 & (((ulong) 1L << 31) -1L);
+}
+
+CalpontSystemCatalog::ColType Func_encode::operationType( FunctionParm& fp, CalpontSystemCatalog::ColType& resultType )
+{
+    return resultType;
+}
+
+string Func_encode::getStrVal(rowgroup::Row& row,
+                           FunctionParm& parm,
+                           bool& isNull,
+                           CalpontSystemCatalog::ColType&)
+{
+
+
+    const string& str = parm[0]->data()->getStrVal(row, isNull);
+    if (isNull)
+    {
+        return "";
+    }
+    const string& password = parm[1]->data()->getStrVal(row, isNull);
+    if (isNull)
+    {
+        return "";
+    }
+
+    int nStrLen = str.length();
+    int nPassLen = password.length();
+    char res[nStrLen+1];
+    memset(res,0,nStrLen+1);
+
+    if (!fSeeded)
+    {
+        hash_password(fSeeds, password.c_str(), nPassLen);
+        sql_crypt.init(fSeeds);
+        fSeeded = true;
+    }
+
+    memcpy(res,str.c_str(),nStrLen);
+    sql_crypt.encode(res,nStrLen);
+    sql_crypt.reinit();
+
+    return res;
+}
+
+}