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rpcrt4: Hide the details of the rpc transport mechanism.

This commit is contained in:
Mike McCormack 2006-04-21 15:40:06 +09:00 committed by Alexandre Julliard
parent 83109e4937
commit 87ddd7b53a
2 changed files with 58 additions and 35 deletions
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3
dlls/rpcrt4/rpc_binding.h
View File

@ -33,8 +33,6 @@ typedef struct _RpcConnection
LPSTR NetworkAddr;
LPSTR Endpoint;
struct protseq_ops *ops;
HANDLE conn, thread;
OVERLAPPED ovl;
USHORT MaxTransmissionSize;
/* The active interface bound to server. */
RPC_SYNTAX_IDENTIFIER ActiveInterface;
@ -42,6 +40,7 @@ typedef struct _RpcConnection
struct protseq_ops {
char *name;
RpcConnection *(*alloc)(void);
RPC_STATUS (*open_connection)(RpcConnection *conn);
HANDLE (*get_connect_wait_handle)(RpcConnection *conn);
RPC_STATUS (*handoff)(RpcConnection *old_conn, RpcConnection *new_conn);

90
dlls/rpcrt4/rpc_transport.c
View File

@ -47,22 +47,35 @@ WINE_DEFAULT_DEBUG_CHANNEL(rpc);
static struct protseq_ops *rpcrt4_get_protseq_ops(const char *protseq);
typedef struct _RpcConnection_np
{
RpcConnection common;
HANDLE pipe, thread;
OVERLAPPED ovl;
} RpcConnection_np;
static RpcConnection *rpcrt4_conn_np_alloc(void)
{
return HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(RpcConnection_np));
}
static RPC_STATUS rpcrt4_connect_pipe(RpcConnection *Connection, LPCSTR pname)
{
RpcConnection_np *npc = (RpcConnection_np *) Connection;
TRACE("listening on %s\n", pname);
Connection->conn = CreateNamedPipeA(pname, PIPE_ACCESS_DUPLEX,
PIPE_TYPE_MESSAGE | PIPE_READMODE_MESSAGE,
PIPE_UNLIMITED_INSTANCES,
RPC_MAX_PACKET_SIZE, RPC_MAX_PACKET_SIZE, 5000, NULL);
memset(&Connection->ovl, 0, sizeof(Connection->ovl));
Connection->ovl.hEvent = CreateEventW(NULL, TRUE, FALSE, NULL);
if (ConnectNamedPipe(Connection->conn, &Connection->ovl))
npc->pipe = CreateNamedPipeA(pname, PIPE_ACCESS_DUPLEX,
PIPE_TYPE_MESSAGE | PIPE_READMODE_MESSAGE,
PIPE_UNLIMITED_INSTANCES,
RPC_MAX_PACKET_SIZE, RPC_MAX_PACKET_SIZE, 5000, NULL);
memset(&npc->ovl, 0, sizeof(npc->ovl));
npc->ovl.hEvent = CreateEventW(NULL, TRUE, FALSE, NULL);
if (ConnectNamedPipe(npc->pipe, &npc->ovl))
return RPC_S_OK;
WARN("Couldn't ConnectNamedPipe (error was %ld)\n", GetLastError());
if (GetLastError() == ERROR_PIPE_CONNECTED) {
SetEvent(Connection->ovl.hEvent);
SetEvent(npc->ovl.hEvent);
return RPC_S_OK;
}
if (GetLastError() == ERROR_IO_PENDING) {
@ -74,15 +87,16 @@ static RPC_STATUS rpcrt4_connect_pipe(RpcConnection *Connection, LPCSTR pname)
static RPC_STATUS rpcrt4_open_pipe(RpcConnection *Connection, LPCSTR pname, BOOL wait)
{
HANDLE conn;
RpcConnection_np *npc = (RpcConnection_np *) Connection;
HANDLE pipe;
DWORD err, dwMode;
TRACE("connecting to %s\n", pname);
while (TRUE) {
conn = CreateFileA(pname, GENERIC_READ|GENERIC_WRITE, 0, NULL,
pipe = CreateFileA(pname, GENERIC_READ|GENERIC_WRITE, 0, NULL,
OPEN_EXISTING, 0, 0);
if (conn != INVALID_HANDLE_VALUE) break;
if (pipe != INVALID_HANDLE_VALUE) break;
err = GetLastError();
if (err == ERROR_PIPE_BUSY) {
TRACE("connection failed, error=%lx\n", err);
@ -98,24 +112,25 @@ static RPC_STATUS rpcrt4_open_pipe(RpcConnection *Connection, LPCSTR pname, BOOL
}
/* success */
memset(&Connection->ovl, 0, sizeof(Connection->ovl));
memset(&npc->ovl, 0, sizeof(npc->ovl));
/* pipe is connected; change to message-read mode. */
dwMode = PIPE_READMODE_MESSAGE;
SetNamedPipeHandleState(conn, &dwMode, NULL, NULL);
Connection->ovl.hEvent = CreateEventW(NULL, TRUE, FALSE, NULL);
Connection->conn = conn;
SetNamedPipeHandleState(pipe, &dwMode, NULL, NULL);
npc->ovl.hEvent = CreateEventW(NULL, TRUE, FALSE, NULL);
npc->pipe = pipe;
return RPC_S_OK;
}
static RPC_STATUS rpcrt4_ncalrpc_open(RpcConnection* Connection)
{
RpcConnection_np *npc = (RpcConnection_np *) Connection;
static LPCSTR prefix = "\\\\.\\pipe\\lrpc\\";
RPC_STATUS r;
LPSTR pname;
/* already connected? */
if (Connection->conn)
if (npc->pipe)
return RPC_S_OK;
/* protseq=ncalrpc: supposed to use NT LPC ports,
@ -134,12 +149,13 @@ static RPC_STATUS rpcrt4_ncalrpc_open(RpcConnection* Connection)
static RPC_STATUS rpcrt4_ncacn_np_open(RpcConnection* Connection)
{
RpcConnection_np *npc = (RpcConnection_np *) Connection;
static LPCSTR prefix = "\\\\.";
RPC_STATUS r;
LPSTR pname;
/* already connected? */
if (Connection->conn)
if (npc->pipe)
return RPC_S_OK;
/* protseq=ncacn_np: named pipes */
@ -154,28 +170,32 @@ static RPC_STATUS rpcrt4_ncacn_np_open(RpcConnection* Connection)
return r;
}
static HANDLE rpcrt4_conn_np_get_connect_event(RpcConnection *conn)
static HANDLE rpcrt4_conn_np_get_connect_event(RpcConnection *Connection)
{
return conn->ovl.hEvent;
RpcConnection_np *npc = (RpcConnection_np *) Connection;
return npc->ovl.hEvent;
}
static RPC_STATUS rpcrt4_conn_np_handoff(RpcConnection *old_conn, RpcConnection *new_conn)
{
RpcConnection_np *old_npc = (RpcConnection_np *) old_conn;
RpcConnection_np *new_npc = (RpcConnection_np *) new_conn;
/* because of the way named pipes work, we'll transfer the connected pipe
* to the child, then reopen the server binding to continue listening */
new_conn->conn = old_conn->conn;
new_conn->ovl = old_conn->ovl;
old_conn->conn = 0;
memset(&old_conn->ovl, 0, sizeof(old_conn->ovl));
new_npc->pipe = old_npc->pipe;
new_npc->ovl = old_npc->ovl;
old_npc->pipe = 0;
memset(&old_npc->ovl, 0, sizeof(old_npc->ovl));
return RPCRT4_OpenConnection(old_conn);
}
static int rpcrt4_conn_np_read(RpcConnection *Connection,
void *buffer, unsigned int count)
{
RpcConnection_np *npc = (RpcConnection_np *) Connection;
DWORD dwRead = 0;
if (!ReadFile(Connection->conn, buffer, count, &dwRead, NULL) &&
if (!ReadFile(npc->pipe, buffer, count, &dwRead, NULL) &&
(GetLastError() != ERROR_MORE_DATA))
return -1;
return dwRead;
@ -184,28 +204,31 @@ static int rpcrt4_conn_np_read(RpcConnection *Connection,
static int rpcrt4_conn_np_write(RpcConnection *Connection,
const void *buffer, unsigned int count)
{
RpcConnection_np *npc = (RpcConnection_np *) Connection;
DWORD dwWritten = 0;
if (!WriteFile(Connection->conn, buffer, count, &dwWritten, NULL))
if (!WriteFile(npc->pipe, buffer, count, &dwWritten, NULL))
return -1;
return dwWritten;
}
static int rpcrt4_conn_np_close(RpcConnection *Connection)
{
if (Connection->conn) {
FlushFileBuffers(Connection->conn);
CloseHandle(Connection->conn);
Connection->conn = 0;
RpcConnection_np *npc = (RpcConnection_np *) Connection;
if (npc->pipe) {
FlushFileBuffers(npc->pipe);
CloseHandle(npc->pipe);
npc->pipe = 0;
}
if (Connection->ovl.hEvent) {
CloseHandle(Connection->ovl.hEvent);
Connection->ovl.hEvent = 0;
if (npc->ovl.hEvent) {
CloseHandle(npc->ovl.hEvent);
npc->ovl.hEvent = 0;
}
return 0;
}
struct protseq_ops protseq_list[] = {
{ "ncacn_np",
rpcrt4_conn_np_alloc,
rpcrt4_ncalrpc_open,
rpcrt4_conn_np_get_connect_event,
rpcrt4_conn_np_handoff,
@ -214,6 +237,7 @@ struct protseq_ops protseq_list[] = {
rpcrt4_conn_np_close,
},
{ "ncalrpc",
rpcrt4_conn_np_alloc,
rpcrt4_ncacn_np_open,
rpcrt4_conn_np_get_connect_event,
rpcrt4_conn_np_handoff,
@ -257,7 +281,7 @@ RPC_STATUS RPCRT4_CreateConnection(RpcConnection** Connection, BOOL server, LPCS
if (!ops)
return RPC_S_PROTSEQ_NOT_SUPPORTED;
NewConnection = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(RpcConnection));
NewConnection = ops->alloc();
NewConnection->server = server;
NewConnection->ops = ops;
NewConnection->NetworkAddr = RPCRT4_strdupA(NetworkAddr);