[1/2] rpcrt4: Handle FC_ENUM16.

[Dan Hipschman]

Implement FC_ENUM16 foo in rpcrt4.  It only involves a simple range check
and making sure it's four bytes in memory and two on the wire.  This and
the next patch are needed by IBackgroundCopyJob2_SetCredentials which uses
an enum field inside a structure.

---
 dlls/rpcrt4/ndr_marshall.c |   25 +++++++++++++++++++++++++
 1 files changed, 25 insertions(+), 0 deletions(-)

diff --git a/dlls/rpcrt4/ndr_marshall.c b/dlls/rpcrt4/ndr_marshall.c
index 888b150..42aebf0 100644
--- a/dlls/rpcrt4/ndr_marshall.c
+++ b/dlls/rpcrt4/ndr_marshall.c
@@ -2190,6 +2190,13 @@ static unsigned char * ComplexMarshall(PMIDL_STUB_MESSAGE pStubMsg,
       safe_copy_to_buffer(pStubMsg, pMemory, 2);
       pMemory += 2;
       break;
+    case RPC_FC_ENUM16:
+      TRACE("enum16=%d <= %p\n", *(DWORD*)pMemory, pMemory);
+      if (32767 < *(DWORD*)pMemory)
+        RpcRaiseException(RPC_X_ENUM_VALUE_OUT_OF_RANGE);
+      safe_copy_to_buffer(pStubMsg, pMemory, 2);
+      pMemory += 4;
+      break;
     case RPC_FC_LONG:
     case RPC_FC_ULONG:
     case RPC_FC_ENUM32:
@@ -2308,6 +2315,14 @@ static unsigned char * ComplexUnmarshall(PMIDL_STUB_MESSAGE pStubMsg,
       TRACE("short=%d => %p\n", *(WORD*)pMemory, pMemory);
       pMemory += 2;
       break;
+    case RPC_FC_ENUM16:
+      safe_copy_from_buffer(pStubMsg, pMemory, 2);
+      *(DWORD*)pMemory &= 0xffff;
+      TRACE("enum16=%d => %p\n", *(DWORD*)pMemory, pMemory);
+      if (32767 < *(DWORD*)pMemory)
+        RpcRaiseException(RPC_X_ENUM_VALUE_OUT_OF_RANGE);
+      pMemory += 4;
+      break;
     case RPC_FC_LONG:
     case RPC_FC_ULONG:
     case RPC_FC_ENUM32:
@@ -2427,6 +2442,10 @@ static unsigned char * ComplexBufferSize(PMIDL_STUB_MESSAGE pStubMsg,
       safe_buffer_length_increment(pStubMsg, 2);
       pMemory += 2;
       break;
+    case RPC_FC_ENUM16:
+      safe_buffer_length_increment(pStubMsg, 2);
+      pMemory += 4;
+      break;
     case RPC_FC_LONG:
     case RPC_FC_ULONG:
     case RPC_FC_ENUM32:
@@ -2524,6 +2543,7 @@ static unsigned char * ComplexFree(PMIDL_STUB_MESSAGE pStubMsg,
       break;
     case RPC_FC_LONG:
     case RPC_FC_ULONG:
+    case RPC_FC_ENUM16:
     case RPC_FC_ENUM32:
       pMemory += 4;
       break;
@@ -2602,6 +2622,10 @@ static unsigned long ComplexStructMemorySize(PMIDL_STUB_MESSAGE pStubMsg,
       size += 2;
       safe_buffer_increment(pStubMsg, 2);
       break;
+    case RPC_FC_ENUM16:
+      size += 4;
+      safe_buffer_increment(pStubMsg, 2);
+      break;
     case RPC_FC_LONG:
     case RPC_FC_ULONG:
     case RPC_FC_ENUM32:
@@ -2674,6 +2698,7 @@ unsigned long ComplexStructSize(PMIDL_STUB_MESSAGE pStubMsg,
       break;
     case RPC_FC_LONG:
     case RPC_FC_ULONG:
+    case RPC_FC_ENUM16:
     case RPC_FC_ENUM32:
       size += 4;
       break;