Sweden-Number/dlls/rpcrt4/rpc_transport.c

484 lines
13 KiB
C

/*
* RPC transport layer
*
* Copyright 2001 Ove Kåven, TransGaming Technologies
* Copyright 2003 Mike Hearn
* Copyright 2004 Filip Navara
* Copyright 2006 Mike McCormack
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include "config.h"
#include <stdarg.h>
#include <stdio.h>
#include <string.h>
#include <assert.h>
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#include <fcntl.h>
#include <stdlib.h>
#include <sys/types.h>
#ifdef HAVE_SYS_SOCKET_H
# include <sys/socket.h>
#endif
#ifdef HAVE_NETINET_IN_H
# include <netinet/in.h>
#endif
#ifdef HAVE_ARPA_INET_H
# include <arpa/inet.h>
#endif
#ifdef HAVE_NETDB_H
#include <netdb.h>
#endif
#include "windef.h"
#include "winbase.h"
#include "winnls.h"
#include "winerror.h"
#include "winreg.h"
#include "winternl.h"
#include "wine/unicode.h"
#include "rpc.h"
#include "rpcndr.h"
#include "wine/debug.h"
#include "rpc_binding.h"
#include "rpc_message.h"
WINE_DEFAULT_DEBUG_CHANNEL(rpc);
/**** ncacn_np support ****/
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);
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(npc->ovl.hEvent);
return RPC_S_OK;
}
if (GetLastError() == ERROR_IO_PENDING) {
/* FIXME: looks like we need to GetOverlappedResult here? */
return RPC_S_OK;
}
return RPC_S_SERVER_UNAVAILABLE;
}
static RPC_STATUS rpcrt4_open_pipe(RpcConnection *Connection, LPCSTR pname, BOOL wait)
{
RpcConnection_np *npc = (RpcConnection_np *) Connection;
HANDLE pipe;
DWORD err, dwMode;
TRACE("connecting to %s\n", pname);
while (TRUE) {
pipe = CreateFileA(pname, GENERIC_READ|GENERIC_WRITE, 0, NULL,
OPEN_EXISTING, 0, 0);
if (pipe != INVALID_HANDLE_VALUE) break;
err = GetLastError();
if (err == ERROR_PIPE_BUSY) {
TRACE("connection failed, error=%lx\n", err);
return RPC_S_SERVER_TOO_BUSY;
}
if (!wait)
return RPC_S_SERVER_UNAVAILABLE;
if (!WaitNamedPipeA(pname, NMPWAIT_WAIT_FOREVER)) {
err = GetLastError();
WARN("connection failed, error=%lx\n", err);
return RPC_S_SERVER_UNAVAILABLE;
}
}
/* success */
memset(&npc->ovl, 0, sizeof(npc->ovl));
/* pipe is connected; change to message-read mode. */
dwMode = PIPE_READMODE_MESSAGE;
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 (npc->pipe)
return RPC_S_OK;
/* protseq=ncalrpc: supposed to use NT LPC ports,
* but we'll implement it with named pipes for now */
pname = HeapAlloc(GetProcessHeap(), 0, strlen(prefix) + strlen(Connection->Endpoint) + 1);
strcat(strcpy(pname, prefix), Connection->Endpoint);
if (Connection->server)
r = rpcrt4_connect_pipe(Connection, pname);
else
r = rpcrt4_open_pipe(Connection, pname, TRUE);
HeapFree(GetProcessHeap(), 0, pname);
return r;
}
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 (npc->pipe)
return RPC_S_OK;
/* protseq=ncacn_np: named pipes */
pname = HeapAlloc(GetProcessHeap(), 0, strlen(prefix) + strlen(Connection->Endpoint) + 1);
strcat(strcpy(pname, prefix), Connection->Endpoint);
if (Connection->server)
r = rpcrt4_connect_pipe(Connection, pname);
else
r = rpcrt4_open_pipe(Connection, pname, FALSE);
HeapFree(GetProcessHeap(), 0, pname);
return r;
}
static HANDLE rpcrt4_conn_np_get_connect_event(RpcConnection *Connection)
{
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_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(npc->pipe, buffer, count, &dwRead, NULL) &&
(GetLastError() != ERROR_MORE_DATA))
return -1;
return dwRead;
}
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(npc->pipe, buffer, count, &dwWritten, NULL))
return -1;
return dwWritten;
}
static int rpcrt4_conn_np_close(RpcConnection *Connection)
{
RpcConnection_np *npc = (RpcConnection_np *) Connection;
if (npc->pipe) {
FlushFileBuffers(npc->pipe);
CloseHandle(npc->pipe);
npc->pipe = 0;
}
if (npc->ovl.hEvent) {
CloseHandle(npc->ovl.hEvent);
npc->ovl.hEvent = 0;
}
return 0;
}
/**** ncacn_ip_tcp support ****/
typedef struct _RpcConnection_tcp
{
RpcConnection common;
int sock;
} RpcConnection_tcp;
static RpcConnection *rpcrt4_conn_tcp_alloc(void)
{
RpcConnection_tcp *tcpc;
tcpc = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(RpcConnection_tcp));
tcpc->sock = -1;
return &tcpc->common;
}
static RPC_STATUS rpcrt4_ncacn_ip_tcp_open(RpcConnection* Connection)
{
RpcConnection_tcp *tcpc = (RpcConnection_tcp *) Connection;
int sock;
int ret;
struct addrinfo *ai;
struct addrinfo *ai_cur;
struct addrinfo hints;
TRACE("(%s, %s)\n", Connection->NetworkAddr, Connection->Endpoint);
if (Connection->server)
{
ERR("ncacn_ip_tcp servers not supported yet\n");
return RPC_S_SERVER_UNAVAILABLE;
}
if (tcpc->sock != -1)
return RPC_S_OK;
hints.ai_flags = 0;
hints.ai_family = PF_UNSPEC;
hints.ai_socktype = SOCK_STREAM;
hints.ai_protocol = IPPROTO_TCP;
hints.ai_addrlen = 0;
hints.ai_addr = NULL;
hints.ai_canonname = NULL;
hints.ai_next = NULL;
ret = getaddrinfo(Connection->NetworkAddr, Connection->Endpoint, &hints, &ai);
if (ret < 0)
{
ERR("getaddrinfo failed with %d\n", ret);
return RPC_S_SERVER_UNAVAILABLE;
}
for (ai_cur = ai; ai_cur; ai_cur = ai->ai_next)
{
if (TRACE_ON(rpc))
{
char host[256];
char service[256];
getnameinfo(ai_cur->ai_addr, ai_cur->ai_addrlen,
host, sizeof(host), service, sizeof(service),
NI_NUMERICHOST | NI_NUMERICSERV);
TRACE("trying %s:%s\n", host, service);
}
sock = socket(ai_cur->ai_family, ai_cur->ai_socktype, ai_cur->ai_protocol);
if (sock < 0)
{
WARN("socket() failed\n");
continue;
}
if (0>connect(sock, ai_cur->ai_addr, ai_cur->ai_addrlen))
{
WARN("connect() failed\n");
close(sock);
continue;
}
tcpc->sock = sock;
freeaddrinfo(ai);
TRACE("connected\n");
return RPC_S_OK;
}
freeaddrinfo(ai);
ERR("couldn't connect to %s:%s\n", Connection->NetworkAddr, Connection->Endpoint);
return RPC_S_SERVER_UNAVAILABLE;
}
static HANDLE rpcrt4_conn_tcp_get_wait_handle(RpcConnection *Connection)
{
assert(0);
return 0;
}
static RPC_STATUS rpcrt4_conn_tcp_handoff(RpcConnection *old_conn, RpcConnection *new_conn)
{
assert(0);
return RPC_S_SERVER_UNAVAILABLE;
}
static int rpcrt4_conn_tcp_read(RpcConnection *Connection,
void *buffer, unsigned int count)
{
RpcConnection_tcp *tcpc = (RpcConnection_tcp *) Connection;
int r = read(tcpc->sock, buffer, count);
TRACE("%d %p %u -> %d\n", tcpc->sock, buffer, count, r);
return r;
}
static int rpcrt4_conn_tcp_write(RpcConnection *Connection,
const void *buffer, unsigned int count)
{
RpcConnection_tcp *tcpc = (RpcConnection_tcp *) Connection;
int r = write(tcpc->sock, buffer, count);
TRACE("%d %p %u -> %d\n", tcpc->sock, buffer, count, r);
return r;
}
static int rpcrt4_conn_tcp_close(RpcConnection *Connection)
{
RpcConnection_tcp *tcpc = (RpcConnection_tcp *) Connection;
TRACE("%d\n", tcpc->sock);
if (tcpc->sock != -1)
close(tcpc->sock);
tcpc->sock = -1;
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,
rpcrt4_conn_np_read,
rpcrt4_conn_np_write,
rpcrt4_conn_np_close,
},
{ "ncalrpc",
rpcrt4_conn_np_alloc,
rpcrt4_ncacn_np_open,
rpcrt4_conn_np_get_connect_event,
rpcrt4_conn_np_handoff,
rpcrt4_conn_np_read,
rpcrt4_conn_np_write,
rpcrt4_conn_np_close,
},
{ "ncacn_ip_tcp",
rpcrt4_conn_tcp_alloc,
rpcrt4_ncacn_ip_tcp_open,
rpcrt4_conn_tcp_get_wait_handle,
rpcrt4_conn_tcp_handoff,
rpcrt4_conn_tcp_read,
rpcrt4_conn_tcp_write,
rpcrt4_conn_tcp_close,
}
};
#define MAX_PROTSEQ (sizeof protseq_list / sizeof protseq_list[0])
static struct protseq_ops *rpcrt4_get_protseq_ops(const char *protseq)
{
int i;
for(i=0; i<MAX_PROTSEQ; i++)
if (!strcmp(protseq_list[i].name, protseq))
return &protseq_list[i];
return NULL;
}
/**** interface to rest of code ****/
RPC_STATUS RPCRT4_OpenConnection(RpcConnection* Connection)
{
TRACE("(Connection == ^%p)\n", Connection);
return Connection->ops->open_connection(Connection);
}
RPC_STATUS RPCRT4_CloseConnection(RpcConnection* Connection)
{
TRACE("(Connection == ^%p)\n", Connection);
rpcrt4_conn_close(Connection);
return RPC_S_OK;
}
RPC_STATUS RPCRT4_CreateConnection(RpcConnection** Connection, BOOL server, LPCSTR Protseq, LPCSTR NetworkAddr, LPCSTR Endpoint, LPCSTR NetworkOptions, RpcBinding* Binding)
{
struct protseq_ops *ops;
RpcConnection* NewConnection;
ops = rpcrt4_get_protseq_ops(Protseq);
if (!ops)
return RPC_S_PROTSEQ_NOT_SUPPORTED;
NewConnection = ops->alloc();
NewConnection->server = server;
NewConnection->ops = ops;
NewConnection->NetworkAddr = RPCRT4_strdupA(NetworkAddr);
NewConnection->Endpoint = RPCRT4_strdupA(Endpoint);
NewConnection->Used = Binding;
NewConnection->MaxTransmissionSize = RPC_MAX_PACKET_SIZE;
TRACE("connection: %p\n", NewConnection);
*Connection = NewConnection;
return RPC_S_OK;
}
RPC_STATUS RPCRT4_SpawnConnection(RpcConnection** Connection, RpcConnection* OldConnection)
{
RPC_STATUS err;
err = RPCRT4_CreateConnection(Connection, OldConnection->server,
rpcrt4_conn_get_name(OldConnection),
OldConnection->NetworkAddr,
OldConnection->Endpoint, NULL, NULL);
if (err == RPC_S_OK)
rpcrt4_conn_handoff(OldConnection, *Connection);
return err;
}
RPC_STATUS RPCRT4_DestroyConnection(RpcConnection* Connection)
{
TRACE("connection: %p\n", Connection);
RPCRT4_CloseConnection(Connection);
RPCRT4_strfree(Connection->Endpoint);
RPCRT4_strfree(Connection->NetworkAddr);
HeapFree(GetProcessHeap(), 0, Connection);
return RPC_S_OK;
}