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rpcrt4: Correctly align the results in the RPC Bind Ack packet.

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This commit is contained in:
Rob Shearman 2006-11-10 11:01:35 +00:00 committed by Alexandre Julliard
parent 50a18ca57e
commit 44922d29db
2 changed files with 9 additions and 6 deletions
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4
dlls/rpcrt4/rpc_defs.h
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@ -88,9 +88,8 @@ typedef struct
typedef struct
{
unsigned char padding1[2]; /* Force alignment! */
unsigned char num_results; /* Number of results */
unsigned char padding2[3]; /* Force alignment! */
unsigned char reserved[3]; /* Force alignment! */
struct {
unsigned short result;
unsigned short reason;
@ -106,6 +105,7 @@ typedef struct
/*
* Following this header are these fields:
* RpcAddressString server_address;
* [0 - 3 bytes of padding so that results is 4-byte aligned]
* RpcResults results;
* RPC_SYNTAX_IDENTIFIER transfer;
*/

11
dlls/rpcrt4/rpc_message.c
View File

@ -49,6 +49,7 @@ WINE_DEFAULT_DEBUG_CHANNEL(rpc);
/* gets the amount needed to round a value up to the specified alignment */
#define ROUND_UP_AMOUNT(value, alignment) \
(((alignment) - (((value) % (alignment)))) % (alignment))
#define ROUND_UP(value, alignment) (((value) + ((alignment) - 1)) & ~((alignment)-1))
static RPC_STATUS I_RpcReAllocateBuffer(PRPC_MESSAGE pMsg);
@ -230,9 +231,10 @@ RpcPktHdr *RPCRT4_BuildBindAckHeader(unsigned long DataRepresentation,
RpcResults *results;
RPC_SYNTAX_IDENTIFIER *transfer_id;
header_size = sizeof(header->bind_ack) + sizeof(RpcResults) +
sizeof(RPC_SYNTAX_IDENTIFIER) + sizeof(RpcAddressString) +
strlen(ServerAddress);
header_size = sizeof(header->bind_ack) +
ROUND_UP(FIELD_OFFSET(RpcAddressString, string[strlen(ServerAddress) + 1]), 4) +
sizeof(RpcResults) +
sizeof(RPC_SYNTAX_IDENTIFIER);
header = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, header_size);
if (header == NULL) {
@ -246,7 +248,8 @@ RpcPktHdr *RPCRT4_BuildBindAckHeader(unsigned long DataRepresentation,
server_address = (RpcAddressString*)(&header->bind_ack + 1);
server_address->length = strlen(ServerAddress) + 1;
strcpy(server_address->string, ServerAddress);
results = (RpcResults*)((ULONG_PTR)server_address + sizeof(RpcAddressString) + server_address->length - 1);
/* results is 4-byte aligned */
results = (RpcResults*)((ULONG_PTR)server_address + ROUND_UP(FIELD_OFFSET(RpcAddressString, string[server_address->length]), 4));
results->num_results = 1;
results->results[0].result = Result;
results->results[0].reason = Reason;