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Sweden-Number/dlls/rpcrt4/rpc_transport.c

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/*
* RPC transport layer
*
* Copyright 2001 Ove Kåven, TransGaming Technologies
* Copyright 2003 Mike Hearn
* Copyright 2004 Filip Navara
* Copyright 2006 Mike McCormack
* Copyright 2006 Damjan Jovanovic
*
* 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*
*/
#include "config.h"
#include <stdarg.h>
#include <stdio.h>
#include <string.h>
#include <assert.h>
#include <errno.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_NETINET_TCP_H
# include <netinet/tcp.h>
#endif
#ifdef HAVE_ARPA_INET_H
# include <arpa/inet.h>
#endif
#ifdef HAVE_NETDB_H
#include <netdb.h>
#endif
#ifdef HAVE_SYS_POLL_H
#include <sys/poll.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"
#include "rpc_server.h"
#include "epm_towers.h"
#ifndef SOL_TCP
# define SOL_TCP IPPROTO_TCP
#endif
WINE_DEFAULT_DEBUG_CHANNEL(rpc);
static CRITICAL_SECTION connection_pool_cs;
static CRITICAL_SECTION_DEBUG connection_pool_cs_debug =
{
0, 0, &connection_pool_cs,
{ &connection_pool_cs_debug.ProcessLocksList, &connection_pool_cs_debug.ProcessLocksList },
0, 0, { (DWORD_PTR)(__FILE__ ": connection_pool") }
};
static CRITICAL_SECTION connection_pool_cs = { &connection_pool_cs_debug, -1, 0, 0, 0, 0 };
static struct list connection_pool = LIST_INIT(connection_pool);
/**** ncacn_np support ****/
typedef struct _RpcConnection_np
{
RpcConnection common;
HANDLE pipe;
OVERLAPPED ovl;
BOOL listening;
} RpcConnection_np;
static RpcConnection *rpcrt4_conn_np_alloc(void)
{
RpcConnection_np *npc = HeapAlloc(GetProcessHeap(), 0, sizeof(RpcConnection_np));
if (npc)
{
npc->pipe = NULL;
memset(&npc->ovl, 0, sizeof(npc->ovl));
npc->listening = FALSE;
}
return &npc->common;
}
static RPC_STATUS rpcrt4_conn_listen_pipe(RpcConnection_np *npc)
{
if (npc->listening)
return RPC_S_OK;
npc->listening = TRUE;
if (ConnectNamedPipe(npc->pipe, &npc->ovl))
return RPC_S_OK;
if (GetLastError() == ERROR_PIPE_CONNECTED) {
SetEvent(npc->ovl.hEvent);
return RPC_S_OK;
}
if (GetLastError() == ERROR_IO_PENDING) {
/* will be completed in rpcrt4_protseq_np_wait_for_new_connection */
return RPC_S_OK;
}
npc->listening = FALSE;
WARN("Couldn't ConnectNamedPipe (error was %d)\n", GetLastError());
return RPC_S_OUT_OF_RESOURCES;
}
static RPC_STATUS rpcrt4_conn_create_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);
if (npc->pipe == INVALID_HANDLE_VALUE) {
WARN("CreateNamedPipe failed with error %d\n", GetLastError());
if (GetLastError() == ERROR_FILE_EXISTS)
return RPC_S_DUPLICATE_ENDPOINT;
else
return RPC_S_CANT_CREATE_ENDPOINT;
}
memset(&npc->ovl, 0, sizeof(npc->ovl));
npc->ovl.hEvent = CreateEventW(NULL, TRUE, FALSE, NULL);
/* Note: we don't call ConnectNamedPipe here because it must be done in the
* server thread as the thread must be alertable */
return RPC_S_OK;
}
static RPC_STATUS rpcrt4_conn_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) {
DWORD dwFlags = 0;
if (Connection->QOS)
{
dwFlags = SECURITY_SQOS_PRESENT;
switch (Connection->QOS->qos->ImpersonationType)
{
case RPC_C_IMP_LEVEL_DEFAULT:
/* FIXME: what to do here? */
break;
case RPC_C_IMP_LEVEL_ANONYMOUS:
dwFlags |= SECURITY_ANONYMOUS;
break;
case RPC_C_IMP_LEVEL_IDENTIFY:
dwFlags |= SECURITY_IDENTIFICATION;
break;
case RPC_C_IMP_LEVEL_IMPERSONATE:
dwFlags |= SECURITY_IMPERSONATION;
break;
case RPC_C_IMP_LEVEL_DELEGATE:
dwFlags |= SECURITY_DELEGATION;
break;
}
if (Connection->QOS->qos->IdentityTracking == RPC_C_QOS_IDENTIFY_DYNAMIC)
dwFlags |= SECURITY_CONTEXT_TRACKING;
}
pipe = CreateFileA(pname, GENERIC_READ|GENERIC_WRITE, 0, NULL,
OPEN_EXISTING, dwFlags, 0);
if (pipe != INVALID_HANDLE_VALUE) break;
err = GetLastError();
if (err == ERROR_PIPE_BUSY) {
TRACE("connection failed, error=%x\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=%x\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 const char 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 = I_RpcAllocate(strlen(prefix) + strlen(Connection->Endpoint) + 1);
strcat(strcpy(pname, prefix), Connection->Endpoint);
r = rpcrt4_conn_open_pipe(Connection, pname, TRUE);
I_RpcFree(pname);
return r;
}
static RPC_STATUS rpcrt4_protseq_ncalrpc_open_endpoint(RpcServerProtseq* protseq, LPSTR endpoint)
{
static const char prefix[] = "\\\\.\\pipe\\lrpc\\";
RPC_STATUS r;
LPSTR pname;
RpcConnection *Connection;
r = RPCRT4_CreateConnection(&Connection, TRUE, protseq->Protseq, NULL,
endpoint, NULL, NULL, NULL, NULL);
if (r != RPC_S_OK)
return r;
/* protseq=ncalrpc: supposed to use NT LPC ports,
* but we'll implement it with named pipes for now */
pname = I_RpcAllocate(strlen(prefix) + strlen(Connection->Endpoint) + 1);
strcat(strcpy(pname, prefix), Connection->Endpoint);
r = rpcrt4_conn_create_pipe(Connection, pname);
I_RpcFree(pname);
EnterCriticalSection(&protseq->cs);
Connection->Next = protseq->conn;
protseq->conn = Connection;
LeaveCriticalSection(&protseq->cs);
return r;
}
static RPC_STATUS rpcrt4_ncacn_np_open(RpcConnection* Connection)
{
RpcConnection_np *npc = (RpcConnection_np *) Connection;
static const char prefix[] = "\\\\.";
RPC_STATUS r;
LPSTR pname;
/* already connected? */
if (npc->pipe)
return RPC_S_OK;
/* protseq=ncacn_np: named pipes */
pname = I_RpcAllocate(strlen(prefix) + strlen(Connection->Endpoint) + 1);
strcat(strcpy(pname, prefix), Connection->Endpoint);
r = rpcrt4_conn_open_pipe(Connection, pname, FALSE);
I_RpcFree(pname);
return r;
}
static RPC_STATUS rpcrt4_protseq_ncacn_np_open_endpoint(RpcServerProtseq *protseq, LPSTR endpoint)
{
static const char prefix[] = "\\\\.";
RPC_STATUS r;
LPSTR pname;
RpcConnection *Connection;
r = RPCRT4_CreateConnection(&Connection, TRUE, protseq->Protseq, NULL,
endpoint, NULL, NULL, NULL, NULL);
if (r != RPC_S_OK)
return r;
/* protseq=ncacn_np: named pipes */
pname = I_RpcAllocate(strlen(prefix) + strlen(Connection->Endpoint) + 1);
strcat(strcpy(pname, prefix), Connection->Endpoint);
r = rpcrt4_conn_create_pipe(Connection, pname);
I_RpcFree(pname);
EnterCriticalSection(&protseq->cs);
Connection->Next = protseq->conn;
protseq->conn = Connection;
LeaveCriticalSection(&protseq->cs);
return r;
}
static void rpcrt4_conn_np_handoff(RpcConnection_np *old_npc, RpcConnection_np *new_npc)
{
/* 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));
old_npc->listening = FALSE;
}
static RPC_STATUS rpcrt4_ncacn_np_handoff(RpcConnection *old_conn, RpcConnection *new_conn)
{
RPC_STATUS status;
LPSTR pname;
static const char prefix[] = "\\\\.";
rpcrt4_conn_np_handoff((RpcConnection_np *)old_conn, (RpcConnection_np *)new_conn);
pname = I_RpcAllocate(strlen(prefix) + strlen(old_conn->Endpoint) + 1);
strcat(strcpy(pname, prefix), old_conn->Endpoint);
status = rpcrt4_conn_create_pipe(old_conn, pname);
I_RpcFree(pname);
return status;
}
static RPC_STATUS rpcrt4_ncalrpc_handoff(RpcConnection *old_conn, RpcConnection *new_conn)
{
RPC_STATUS status;
LPSTR pname;
static const char prefix[] = "\\\\.\\pipe\\lrpc\\";
TRACE("%s\n", old_conn->Endpoint);
rpcrt4_conn_np_handoff((RpcConnection_np *)old_conn, (RpcConnection_np *)new_conn);
pname = I_RpcAllocate(strlen(prefix) + strlen(old_conn->Endpoint) + 1);
strcat(strcpy(pname, prefix), old_conn->Endpoint);
status = rpcrt4_conn_create_pipe(old_conn, pname);
I_RpcFree(pname);
return status;
}
static int rpcrt4_conn_np_read(RpcConnection *Connection,
void *buffer, unsigned int count)
{
RpcConnection_np *npc = (RpcConnection_np *) Connection;
char *buf = buffer;
BOOL ret = TRUE;
unsigned int bytes_left = count;
while (bytes_left)
{
DWORD bytes_read;
ret = ReadFile(npc->pipe, buf, bytes_left, &bytes_read, NULL);
if (!ret || !bytes_read)
break;
bytes_left -= bytes_read;
buf += bytes_read;
}
return ret ? count : -1;
}
static int rpcrt4_conn_np_write(RpcConnection *Connection,
const void *buffer, unsigned int count)
{
RpcConnection_np *npc = (RpcConnection_np *) Connection;
const char *buf = buffer;
BOOL ret = TRUE;
unsigned int bytes_left = count;
while (bytes_left)
{
DWORD bytes_written;
ret = WriteFile(npc->pipe, buf, count, &bytes_written, NULL);
if (!ret || !bytes_written)
break;
bytes_left -= bytes_written;
buf += bytes_written;
}
return ret ? count : -1;
}
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;
}
static size_t rpcrt4_ncacn_np_get_top_of_tower(unsigned char *tower_data,
const char *networkaddr,
const char *endpoint)
{
twr_empty_floor_t *smb_floor;
twr_empty_floor_t *nb_floor;
size_t size;
size_t networkaddr_size;
size_t endpoint_size;
TRACE("(%p, %s, %s)\n", tower_data, networkaddr, endpoint);
networkaddr_size = strlen(networkaddr) + 1;
endpoint_size = strlen(endpoint) + 1;
size = sizeof(*smb_floor) + endpoint_size + sizeof(*nb_floor) + networkaddr_size;
if (!tower_data)
return size;
smb_floor = (twr_empty_floor_t *)tower_data;
tower_data += sizeof(*smb_floor);
smb_floor->count_lhs = sizeof(smb_floor->protid);
smb_floor->protid = EPM_PROTOCOL_SMB;
smb_floor->count_rhs = endpoint_size;
memcpy(tower_data, endpoint, endpoint_size);
tower_data += endpoint_size;
nb_floor = (twr_empty_floor_t *)tower_data;
tower_data += sizeof(*nb_floor);
nb_floor->count_lhs = sizeof(nb_floor->protid);
nb_floor->protid = EPM_PROTOCOL_NETBIOS;
nb_floor->count_rhs = networkaddr_size;
memcpy(tower_data, networkaddr, networkaddr_size);
tower_data += networkaddr_size;
return size;
}
static RPC_STATUS rpcrt4_ncacn_np_parse_top_of_tower(const unsigned char *tower_data,
size_t tower_size,
char **networkaddr,
char **endpoint)
{
const twr_empty_floor_t *smb_floor = (const twr_empty_floor_t *)tower_data;
const twr_empty_floor_t *nb_floor;
TRACE("(%p, %d, %p, %p)\n", tower_data, (int)tower_size, networkaddr, endpoint);
if (tower_size < sizeof(*smb_floor))
return EPT_S_NOT_REGISTERED;
tower_data += sizeof(*smb_floor);
tower_size -= sizeof(*smb_floor);
if ((smb_floor->count_lhs != sizeof(smb_floor->protid)) ||
(smb_floor->protid != EPM_PROTOCOL_SMB) ||
(smb_floor->count_rhs > tower_size))
return EPT_S_NOT_REGISTERED;
if (endpoint)
{
*endpoint = I_RpcAllocate(smb_floor->count_rhs);
if (!*endpoint)
return RPC_S_OUT_OF_RESOURCES;
memcpy(*endpoint, tower_data, smb_floor->count_rhs);
}
tower_data += smb_floor->count_rhs;
tower_size -= smb_floor->count_rhs;
if (tower_size < sizeof(*nb_floor))
return EPT_S_NOT_REGISTERED;
nb_floor = (const twr_empty_floor_t *)tower_data;
tower_data += sizeof(*nb_floor);
tower_size -= sizeof(*nb_floor);
if ((nb_floor->count_lhs != sizeof(nb_floor->protid)) ||
(nb_floor->protid != EPM_PROTOCOL_NETBIOS) ||
(nb_floor->count_rhs > tower_size))
return EPT_S_NOT_REGISTERED;
if (networkaddr)
{
*networkaddr = I_RpcAllocate(nb_floor->count_rhs);
if (!*networkaddr)
{
if (endpoint)
{
I_RpcFree(*endpoint);
*endpoint = NULL;
}
return RPC_S_OUT_OF_RESOURCES;
}
memcpy(*networkaddr, tower_data, nb_floor->count_rhs);
}
return RPC_S_OK;
}
typedef struct _RpcServerProtseq_np
{
RpcServerProtseq common;
HANDLE mgr_event;
} RpcServerProtseq_np;
static RpcServerProtseq *rpcrt4_protseq_np_alloc(void)
{
RpcServerProtseq_np *ps = HeapAlloc(GetProcessHeap(), 0, sizeof(*ps));
if (ps)
ps->mgr_event = CreateEventW(NULL, FALSE, FALSE, NULL);
return &ps->common;
}
static void rpcrt4_protseq_np_signal_state_changed(RpcServerProtseq *protseq)
{
RpcServerProtseq_np *npps = CONTAINING_RECORD(protseq, RpcServerProtseq_np, common);
SetEvent(npps->mgr_event);
}
static void *rpcrt4_protseq_np_get_wait_array(RpcServerProtseq *protseq, void *prev_array, unsigned int *count)
{
HANDLE *objs = prev_array;
RpcConnection_np *conn;
RpcServerProtseq_np *npps = CONTAINING_RECORD(protseq, RpcServerProtseq_np, common);
EnterCriticalSection(&protseq->cs);
/* open and count connections */
*count = 1;
conn = CONTAINING_RECORD(protseq->conn, RpcConnection_np, common);
while (conn) {
rpcrt4_conn_listen_pipe(conn);
if (conn->ovl.hEvent)
(*count)++;
conn = CONTAINING_RECORD(conn->common.Next, RpcConnection_np, common);
}
/* make array of connections */
if (objs)
objs = HeapReAlloc(GetProcessHeap(), 0, objs, *count*sizeof(HANDLE));
else
objs = HeapAlloc(GetProcessHeap(), 0, *count*sizeof(HANDLE));
if (!objs)
{
ERR("couldn't allocate objs\n");
LeaveCriticalSection(&protseq->cs);
return NULL;
}
objs[0] = npps->mgr_event;
*count = 1;
conn = CONTAINING_RECORD(protseq->conn, RpcConnection_np, common);
while (conn) {
if ((objs[*count] = conn->ovl.hEvent))
(*count)++;
conn = CONTAINING_RECORD(conn->common.Next, RpcConnection_np, common);
}
LeaveCriticalSection(&protseq->cs);
return objs;
}
static void rpcrt4_protseq_np_free_wait_array(RpcServerProtseq *protseq, void *array)
{
HeapFree(GetProcessHeap(), 0, array);
}
static int rpcrt4_protseq_np_wait_for_new_connection(RpcServerProtseq *protseq, unsigned int count, void *wait_array)
{
HANDLE b_handle;
HANDLE *objs = wait_array;
DWORD res;
RpcConnection *cconn;
RpcConnection_np *conn;
if (!objs)
return -1;
res = WaitForMultipleObjects(count, objs, FALSE, INFINITE);
if (res == WAIT_OBJECT_0)
return 0;
else if (res == WAIT_FAILED)
{
ERR("wait failed with error %d\n", GetLastError());
return -1;
}
else
{
b_handle = objs[res - WAIT_OBJECT_0];
/* find which connection got a RPC */
EnterCriticalSection(&protseq->cs);
conn = CONTAINING_RECORD(protseq->conn, RpcConnection_np, common);
while (conn) {
if (b_handle == conn->ovl.hEvent) break;
conn = CONTAINING_RECORD(conn->common.Next, RpcConnection_np, common);
}
cconn = NULL;
if (conn)
RPCRT4_SpawnConnection(&cconn, &conn->common);
else
ERR("failed to locate connection for handle %p\n", b_handle);
LeaveCriticalSection(&protseq->cs);
if (cconn)
{
RPCRT4_new_client(cconn);
return 1;
}
else return -1;
}
}
static size_t rpcrt4_ncalrpc_get_top_of_tower(unsigned char *tower_data,
const char *networkaddr,
const char *endpoint)
{
twr_empty_floor_t *pipe_floor;
size_t size;
size_t endpoint_size;
TRACE("(%p, %s, %s)\n", tower_data, networkaddr, endpoint);
endpoint_size = strlen(networkaddr) + 1;
size = sizeof(*pipe_floor) + endpoint_size;
if (!tower_data)
return size;
pipe_floor = (twr_empty_floor_t *)tower_data;
tower_data += sizeof(*pipe_floor);
pipe_floor->count_lhs = sizeof(pipe_floor->protid);
pipe_floor->protid = EPM_PROTOCOL_SMB;
pipe_floor->count_rhs = endpoint_size;
memcpy(tower_data, endpoint, endpoint_size);
tower_data += endpoint_size;
return size;
}
static RPC_STATUS rpcrt4_ncalrpc_parse_top_of_tower(const unsigned char *tower_data,
size_t tower_size,
char **networkaddr,
char **endpoint)
{
const twr_empty_floor_t *pipe_floor = (const twr_empty_floor_t *)tower_data;
TRACE("(%p, %d, %p, %p)\n", tower_data, (int)tower_size, networkaddr, endpoint);
*networkaddr = NULL;
*endpoint = NULL;
if (tower_size < sizeof(*pipe_floor))
return EPT_S_NOT_REGISTERED;
tower_data += sizeof(*pipe_floor);
tower_size -= sizeof(*pipe_floor);
if ((pipe_floor->count_lhs != sizeof(pipe_floor->protid)) ||
(pipe_floor->protid != EPM_PROTOCOL_SMB) ||
(pipe_floor->count_rhs > tower_size))
return EPT_S_NOT_REGISTERED;
if (endpoint)
{
*endpoint = I_RpcAllocate(pipe_floor->count_rhs);
if (!*endpoint)
return RPC_S_OUT_OF_RESOURCES;
memcpy(*endpoint, tower_data, pipe_floor->count_rhs);
}
return RPC_S_OK;
}
/**** 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(), 0, sizeof(RpcConnection_tcp));
if (tcpc == NULL)
return NULL;
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 (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)
{
ERR("getaddrinfo for %s:%s failed: %s\n", Connection->NetworkAddr,
Connection->Endpoint, gai_strerror(ret));
return RPC_S_SERVER_UNAVAILABLE;
}
for (ai_cur = ai; ai_cur; ai_cur = ai_cur->ai_next)
{
int val;
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: %s\n", strerror(errno));
continue;
}
if (0>connect(sock, ai_cur->ai_addr, ai_cur->ai_addrlen))
{
WARN("connect() failed: %s\n", strerror(errno));
close(sock);
continue;
}
/* RPC depends on having minimal latency so disable the Nagle algorithm */
val = 1;
setsockopt(sock, SOL_TCP, TCP_NODELAY, &val, sizeof(val));
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 RPC_STATUS rpcrt4_protseq_ncacn_ip_tcp_open_endpoint(RpcServerProtseq *protseq, LPSTR endpoint)
{
RPC_STATUS status = RPC_S_CANT_CREATE_ENDPOINT;
int sock;
int ret;
struct addrinfo *ai;
struct addrinfo *ai_cur;
struct addrinfo hints;
RpcConnection *first_connection = NULL;
TRACE("(%p, %s)\n", protseq, endpoint);
hints.ai_flags = AI_PASSIVE /* for non-localhost addresses */;
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(NULL, endpoint, &hints, &ai);
if (ret)
{
ERR("getaddrinfo for port %s failed: %s\n", endpoint,
gai_strerror(ret));
if ((ret == EAI_SERVICE) || (ret == EAI_NONAME))
return RPC_S_INVALID_ENDPOINT_FORMAT;
return RPC_S_CANT_CREATE_ENDPOINT;
}
for (ai_cur = ai; ai_cur; ai_cur = ai_cur->ai_next)
{
RpcConnection_tcp *tcpc;
RPC_STATUS create_status;
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: %s\n", strerror(errno));
status = RPC_S_CANT_CREATE_ENDPOINT;
continue;
}
ret = bind(sock, ai_cur->ai_addr, ai_cur->ai_addrlen);
if (ret < 0)
{
WARN("bind failed: %s\n", strerror(errno));
close(sock);
if (errno == EADDRINUSE)
status = RPC_S_DUPLICATE_ENDPOINT;
else
status = RPC_S_CANT_CREATE_ENDPOINT;
continue;
}
create_status = RPCRT4_CreateConnection((RpcConnection **)&tcpc, TRUE,
protseq->Protseq, NULL,
endpoint, NULL, NULL, NULL,
NULL);
if (create_status != RPC_S_OK)
{
close(sock);
status = create_status;
continue;
}
tcpc->sock = sock;
ret = listen(sock, protseq->MaxCalls);
if (ret < 0)
{
WARN("listen failed: %s\n", strerror(errno));
RPCRT4_DestroyConnection(&tcpc->common);
status = RPC_S_OUT_OF_RESOURCES;
continue;
}
/* need a non-blocking socket, otherwise accept() has a potential
* race-condition (poll() says it is readable, connection drops,
* and accept() blocks until the next connection comes...)
*/
ret = fcntl(sock, F_SETFL, O_NONBLOCK);
if (ret < 0)
{
WARN("couldn't make socket non-blocking, error %d\n", ret);
RPCRT4_DestroyConnection(&tcpc->common);
status = RPC_S_OUT_OF_RESOURCES;
continue;
}
tcpc->common.Next = first_connection;
first_connection = &tcpc->common;
}
freeaddrinfo(ai);
/* if at least one connection was created for an endpoint then
* return success */
if (first_connection)
{
RpcConnection *conn;
/* find last element in list */
for (conn = first_connection; conn->Next; conn = conn->Next)
;
EnterCriticalSection(&protseq->cs);
conn->Next = protseq->conn;
protseq->conn = first_connection;
LeaveCriticalSection(&protseq->cs);
TRACE("listening on %s\n", endpoint);
return RPC_S_OK;
}
ERR("couldn't listen on port %s\n", endpoint);
return status;
}
static RPC_STATUS rpcrt4_conn_tcp_handoff(RpcConnection *old_conn, RpcConnection *new_conn)
{
int ret;
struct sockaddr_in address;
socklen_t addrsize;
RpcConnection_tcp *server = (RpcConnection_tcp*) old_conn;
RpcConnection_tcp *client = (RpcConnection_tcp*) new_conn;
addrsize = sizeof(address);
ret = accept(server->sock, (struct sockaddr*) &address, &addrsize);
if (ret < 0)
{
ERR("Failed to accept a TCP connection: error %d\n", ret);
return RPC_S_OUT_OF_RESOURCES;
}
/* reset to blocking behaviour */
fcntl(ret, F_SETFL, 0);
client->sock = ret;
TRACE("Accepted a new TCP connection\n");
return RPC_S_OK;
}
static int rpcrt4_conn_tcp_read(RpcConnection *Connection,
void *buffer, unsigned int count)
{
RpcConnection_tcp *tcpc = (RpcConnection_tcp *) Connection;
int r = recv(tcpc->sock, buffer, count, MSG_WAITALL);
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;
}
static size_t rpcrt4_ncacn_ip_tcp_get_top_of_tower(unsigned char *tower_data,
const char *networkaddr,
const char *endpoint)
{
twr_tcp_floor_t *tcp_floor;
twr_ipv4_floor_t *ipv4_floor;
struct addrinfo *ai;
struct addrinfo hints;
int ret;
size_t size = sizeof(*tcp_floor) + sizeof(*ipv4_floor);
TRACE("(%p, %s, %s)\n", tower_data, networkaddr, endpoint);
if (!tower_data)
return size;
tcp_floor = (twr_tcp_floor_t *)tower_data;
tower_data += sizeof(*tcp_floor);
ipv4_floor = (twr_ipv4_floor_t *)tower_data;
tcp_floor->count_lhs = sizeof(tcp_floor->protid);
tcp_floor->protid = EPM_PROTOCOL_TCP;
tcp_floor->count_rhs = sizeof(tcp_floor->port);
ipv4_floor->count_lhs = sizeof(ipv4_floor->protid);
ipv4_floor->protid = EPM_PROTOCOL_IP;
ipv4_floor->count_rhs = sizeof(ipv4_floor->ipv4addr);
hints.ai_flags = AI_NUMERICHOST;
/* FIXME: only support IPv4 at the moment. how is IPv6 represented by the EPM? */
hints.ai_family = PF_INET;
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(networkaddr, endpoint, &hints, &ai);
if (ret)
{
ret = getaddrinfo("0.0.0.0", endpoint, &hints, &ai);
if (ret)
{
ERR("getaddrinfo failed: %s\n", gai_strerror(ret));
return 0;
}
}
if (ai->ai_family == PF_INET)
{
const struct sockaddr_in *sin = (const struct sockaddr_in *)ai->ai_addr;
tcp_floor->port = sin->sin_port;
ipv4_floor->ipv4addr = sin->sin_addr.s_addr;
}
else
{
ERR("unexpected protocol family %d\n", ai->ai_family);
return 0;
}
freeaddrinfo(ai);
return size;
}
static RPC_STATUS rpcrt4_ncacn_ip_tcp_parse_top_of_tower(const unsigned char *tower_data,
size_t tower_size,
char **networkaddr,
char **endpoint)
{
const twr_tcp_floor_t *tcp_floor = (const twr_tcp_floor_t *)tower_data;
const twr_ipv4_floor_t *ipv4_floor;
struct in_addr in_addr;
TRACE("(%p, %d, %p, %p)\n", tower_data, (int)tower_size, networkaddr, endpoint);
if (tower_size < sizeof(*tcp_floor))
return EPT_S_NOT_REGISTERED;
tower_data += sizeof(*tcp_floor);
tower_size -= sizeof(*tcp_floor);
if (tower_size < sizeof(*ipv4_floor))
return EPT_S_NOT_REGISTERED;
ipv4_floor = (const twr_ipv4_floor_t *)tower_data;
if ((tcp_floor->count_lhs != sizeof(tcp_floor->protid)) ||
(tcp_floor->protid != EPM_PROTOCOL_TCP) ||
(tcp_floor->count_rhs != sizeof(tcp_floor->port)) ||
(ipv4_floor->count_lhs != sizeof(ipv4_floor->protid)) ||
(ipv4_floor->protid != EPM_PROTOCOL_IP) ||
(ipv4_floor->count_rhs != sizeof(ipv4_floor->ipv4addr)))
return EPT_S_NOT_REGISTERED;
if (endpoint)
{
*endpoint = I_RpcAllocate(6 /* sizeof("65535") + 1 */);
if (!*endpoint)
return RPC_S_OUT_OF_RESOURCES;
sprintf(*endpoint, "%u", ntohs(tcp_floor->port));
}
if (networkaddr)
{
*networkaddr = I_RpcAllocate(INET_ADDRSTRLEN);
if (!*networkaddr)
{
if (endpoint)
{
I_RpcFree(*endpoint);
*endpoint = NULL;
}
return RPC_S_OUT_OF_RESOURCES;
}
in_addr.s_addr = ipv4_floor->ipv4addr;
if (!inet_ntop(AF_INET, &in_addr, *networkaddr, INET_ADDRSTRLEN))
{
ERR("inet_ntop: %s\n", strerror(errno));
I_RpcFree(*networkaddr);
*networkaddr = NULL;
if (endpoint)
{
I_RpcFree(*endpoint);
*endpoint = NULL;
}
return EPT_S_NOT_REGISTERED;
}
}
return RPC_S_OK;
}
typedef struct _RpcServerProtseq_sock
{
RpcServerProtseq common;
int mgr_event_rcv;
int mgr_event_snd;
} RpcServerProtseq_sock;
static RpcServerProtseq *rpcrt4_protseq_sock_alloc(void)
{
RpcServerProtseq_sock *ps = HeapAlloc(GetProcessHeap(), 0, sizeof(*ps));
if (ps)
{
int fds[2];
if (!socketpair(PF_UNIX, SOCK_DGRAM, 0, fds))
{
fcntl(fds[0], F_SETFL, O_NONBLOCK);
fcntl(fds[1], F_SETFL, O_NONBLOCK);
ps->mgr_event_rcv = fds[0];
ps->mgr_event_snd = fds[1];
}
else
{
ERR("socketpair failed with error %s\n", strerror(errno));
HeapFree(GetProcessHeap(), 0, ps);
return NULL;
}
}
return &ps->common;
}
static void rpcrt4_protseq_sock_signal_state_changed(RpcServerProtseq *protseq)
{
RpcServerProtseq_sock *sockps = CONTAINING_RECORD(protseq, RpcServerProtseq_sock, common);
char dummy = 1;
write(sockps->mgr_event_snd, &dummy, sizeof(dummy));
}
static void *rpcrt4_protseq_sock_get_wait_array(RpcServerProtseq *protseq, void *prev_array, unsigned int *count)
{
struct pollfd *poll_info = prev_array;
RpcConnection_tcp *conn;
RpcServerProtseq_sock *sockps = CONTAINING_RECORD(protseq, RpcServerProtseq_sock, common);
EnterCriticalSection(&protseq->cs);
/* open and count connections */
*count = 1;
conn = (RpcConnection_tcp *)protseq->conn;
while (conn) {
if (conn->sock != -1)
(*count)++;
conn = (RpcConnection_tcp *)conn->common.Next;
}
/* make array of connections */
if (poll_info)
poll_info = HeapReAlloc(GetProcessHeap(), 0, poll_info, *count*sizeof(*poll_info));
else
poll_info = HeapAlloc(GetProcessHeap(), 0, *count*sizeof(*poll_info));
if (!poll_info)
{
ERR("couldn't allocate poll_info\n");
LeaveCriticalSection(&protseq->cs);
return NULL;
}
poll_info[0].fd = sockps->mgr_event_rcv;
poll_info[0].events = POLLIN;
*count = 1;
conn = CONTAINING_RECORD(protseq->conn, RpcConnection_tcp, common);
while (conn) {
if (conn->sock != -1)
{
poll_info[*count].fd = conn->sock;
poll_info[*count].events = POLLIN;
(*count)++;
}
conn = CONTAINING_RECORD(conn->common.Next, RpcConnection_tcp, common);
}
LeaveCriticalSection(&protseq->cs);
return poll_info;
}
static void rpcrt4_protseq_sock_free_wait_array(RpcServerProtseq *protseq, void *array)
{
HeapFree(GetProcessHeap(), 0, array);
}
static int rpcrt4_protseq_sock_wait_for_new_connection(RpcServerProtseq *protseq, unsigned int count, void *wait_array)
{
struct pollfd *poll_info = wait_array;
int ret, i;
RpcConnection *cconn;
RpcConnection_tcp *conn;
if (!poll_info)
return -1;
ret = poll(poll_info, count, -1);
if (ret < 0)
{
ERR("poll failed with error %d\n", ret);
return -1;
}
for (i = 0; i < count; i++)
if (poll_info[i].revents & POLLIN)
{
/* RPC server event */
if (i == 0)
{
char dummy;
read(poll_info[0].fd, &dummy, sizeof(dummy));
return 0;
}
/* find which connection got a RPC */
EnterCriticalSection(&protseq->cs);
conn = CONTAINING_RECORD(protseq->conn, RpcConnection_tcp, common);
while (conn) {
if (poll_info[i].fd == conn->sock) break;
conn = CONTAINING_RECORD(conn->common.Next, RpcConnection_tcp, common);
}
cconn = NULL;
if (conn)
RPCRT4_SpawnConnection(&cconn, &conn->common);
else
ERR("failed to locate connection for fd %d\n", poll_info[i].fd);
LeaveCriticalSection(&protseq->cs);
if (cconn)
RPCRT4_new_client(cconn);
else
return -1;
}
return 1;
}
static const struct connection_ops conn_protseq_list[] = {
{ "ncacn_np",
{ EPM_PROTOCOL_NCACN, EPM_PROTOCOL_SMB },
rpcrt4_conn_np_alloc,
rpcrt4_ncacn_np_open,
rpcrt4_ncacn_np_handoff,
rpcrt4_conn_np_read,
rpcrt4_conn_np_write,
rpcrt4_conn_np_close,
rpcrt4_ncacn_np_get_top_of_tower,
rpcrt4_ncacn_np_parse_top_of_tower,
},
{ "ncalrpc",
{ EPM_PROTOCOL_NCALRPC, EPM_PROTOCOL_PIPE },
rpcrt4_conn_np_alloc,
rpcrt4_ncalrpc_open,
rpcrt4_ncalrpc_handoff,
rpcrt4_conn_np_read,
rpcrt4_conn_np_write,
rpcrt4_conn_np_close,
rpcrt4_ncalrpc_get_top_of_tower,
rpcrt4_ncalrpc_parse_top_of_tower,
},
{ "ncacn_ip_tcp",
{ EPM_PROTOCOL_NCACN, EPM_PROTOCOL_TCP },
rpcrt4_conn_tcp_alloc,
rpcrt4_ncacn_ip_tcp_open,
rpcrt4_conn_tcp_handoff,
rpcrt4_conn_tcp_read,
rpcrt4_conn_tcp_write,
rpcrt4_conn_tcp_close,
rpcrt4_ncacn_ip_tcp_get_top_of_tower,
rpcrt4_ncacn_ip_tcp_parse_top_of_tower,
}
};
static const struct protseq_ops protseq_list[] =
{
{
"ncacn_np",
rpcrt4_protseq_np_alloc,
rpcrt4_protseq_np_signal_state_changed,
rpcrt4_protseq_np_get_wait_array,
rpcrt4_protseq_np_free_wait_array,
rpcrt4_protseq_np_wait_for_new_connection,
rpcrt4_protseq_ncacn_np_open_endpoint,
},
{
"ncalrpc",
rpcrt4_protseq_np_alloc,
rpcrt4_protseq_np_signal_state_changed,
rpcrt4_protseq_np_get_wait_array,
rpcrt4_protseq_np_free_wait_array,
rpcrt4_protseq_np_wait_for_new_connection,
rpcrt4_protseq_ncalrpc_open_endpoint,
},
{
"ncacn_ip_tcp",
rpcrt4_protseq_sock_alloc,
rpcrt4_protseq_sock_signal_state_changed,
rpcrt4_protseq_sock_get_wait_array,
rpcrt4_protseq_sock_free_wait_array,
rpcrt4_protseq_sock_wait_for_new_connection,
rpcrt4_protseq_ncacn_ip_tcp_open_endpoint,
},
};
#define ARRAYSIZE(a) (sizeof((a)) / sizeof((a)[0]))
const struct protseq_ops *rpcrt4_get_protseq_ops(const char *protseq)
{
int i;
for(i=0; i<ARRAYSIZE(protseq_list); i++)
if (!strcmp(protseq_list[i].name, protseq))
return &protseq_list[i];
return NULL;
}
static const struct connection_ops *rpcrt4_get_conn_protseq_ops(const char *protseq)
{
int i;
for(i=0; i<ARRAYSIZE(conn_protseq_list); i++)
if (!strcmp(conn_protseq_list[i].name, protseq))
return &conn_protseq_list[i];
return NULL;
}
/**** interface to rest of code ****/
RPC_STATUS RPCRT4_OpenClientConnection(RpcConnection* Connection)
{
TRACE("(Connection == ^%p)\n", Connection);
assert(!Connection->server);
return Connection->ops->open_connection_client(Connection);
}
RPC_STATUS RPCRT4_CloseConnection(RpcConnection* Connection)
{
TRACE("(Connection == ^%p)\n", Connection);
if (SecIsValidHandle(&Connection->ctx))
{
DeleteSecurityContext(&Connection->ctx);
SecInvalidateHandle(&Connection->ctx);
}
rpcrt4_conn_close(Connection);
return RPC_S_OK;
}
RPC_STATUS RPCRT4_CreateConnection(RpcConnection** Connection, BOOL server,
LPCSTR Protseq, LPCSTR NetworkAddr, LPCSTR Endpoint,
LPCWSTR NetworkOptions, RpcAuthInfo* AuthInfo, RpcQualityOfService *QOS,
RpcBinding* Binding)
{
const struct connection_ops *ops;
RpcConnection* NewConnection;
ops = rpcrt4_get_conn_protseq_ops(Protseq);
if (!ops)
{
FIXME("not supported for protseq %s\n", Protseq);
return RPC_S_PROTSEQ_NOT_SUPPORTED;
}
NewConnection = ops->alloc();
NewConnection->Next = NULL;
NewConnection->server = server;
NewConnection->ops = ops;
NewConnection->NetworkAddr = RPCRT4_strdupA(NetworkAddr);
NewConnection->Endpoint = RPCRT4_strdupA(Endpoint);
NewConnection->NetworkOptions = RPCRT4_strdupW(NetworkOptions);
NewConnection->Used = Binding;
NewConnection->MaxTransmissionSize = RPC_MAX_PACKET_SIZE;
memset(&NewConnection->ActiveInterface, 0, sizeof(NewConnection->ActiveInterface));
NewConnection->NextCallId = 1;
SecInvalidateHandle(&NewConnection->ctx);
if (AuthInfo) RpcAuthInfo_AddRef(AuthInfo);
NewConnection->AuthInfo = AuthInfo;
if (QOS) RpcQualityOfService_AddRef(QOS);
NewConnection->QOS = QOS;
list_init(&NewConnection->conn_pool_entry);
TRACE("connection: %p\n", NewConnection);
*Connection = NewConnection;
return RPC_S_OK;
}
RpcConnection *RPCRT4_GetIdleConnection(const RPC_SYNTAX_IDENTIFIER *InterfaceId,
const RPC_SYNTAX_IDENTIFIER *TransferSyntax, LPCSTR Protseq, LPCSTR NetworkAddr,
LPCSTR Endpoint, const RpcAuthInfo* AuthInfo, const RpcQualityOfService *QOS)
{
RpcConnection *Connection;
/* try to find a compatible connection from the connection pool */
EnterCriticalSection(&connection_pool_cs);
LIST_FOR_EACH_ENTRY(Connection, &connection_pool, RpcConnection, conn_pool_entry)
if ((Connection->AuthInfo == AuthInfo) &&
(Connection->QOS == QOS) &&
!memcmp(&Connection->ActiveInterface, InterfaceId,
sizeof(RPC_SYNTAX_IDENTIFIER)) &&
!strcmp(rpcrt4_conn_get_name(Connection), Protseq) &&
!strcmp(Connection->NetworkAddr, NetworkAddr) &&
!strcmp(Connection->Endpoint, Endpoint))
{
list_remove(&Connection->conn_pool_entry);
LeaveCriticalSection(&connection_pool_cs);
TRACE("got connection from pool %p\n", Connection);
return Connection;
}
LeaveCriticalSection(&connection_pool_cs);
return NULL;
}
void RPCRT4_ReleaseIdleConnection(RpcConnection *Connection)
{
assert(!Connection->server);
EnterCriticalSection(&connection_pool_cs);
list_add_head(&connection_pool, &Connection->conn_pool_entry);
LeaveCriticalSection(&connection_pool_cs);
}
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,
OldConnection->AuthInfo, OldConnection->QOS,
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->NetworkOptions);
if (Connection->AuthInfo) RpcAuthInfo_Release(Connection->AuthInfo);
if (Connection->QOS) RpcQualityOfService_Release(Connection->QOS);
HeapFree(GetProcessHeap(), 0, Connection);
return RPC_S_OK;
}
RPC_STATUS RpcTransport_GetTopOfTower(unsigned char *tower_data,
size_t *tower_size,
const char *protseq,
const char *networkaddr,
const char *endpoint)
{
twr_empty_floor_t *protocol_floor;
const struct connection_ops *protseq_ops = rpcrt4_get_conn_protseq_ops(protseq);
*tower_size = 0;
if (!protseq_ops)
return RPC_S_INVALID_RPC_PROTSEQ;
if (!tower_data)
{
*tower_size = sizeof(*protocol_floor);
*tower_size += protseq_ops->get_top_of_tower(NULL, networkaddr, endpoint);
return RPC_S_OK;
}
protocol_floor = (twr_empty_floor_t *)tower_data;
protocol_floor->count_lhs = sizeof(protocol_floor->protid);
protocol_floor->protid = protseq_ops->epm_protocols[0];
protocol_floor->count_rhs = 0;
tower_data += sizeof(*protocol_floor);
*tower_size = protseq_ops->get_top_of_tower(tower_data, networkaddr, endpoint);
if (!*tower_size)
return EPT_S_NOT_REGISTERED;
*tower_size += sizeof(*protocol_floor);
return RPC_S_OK;
}
RPC_STATUS RpcTransport_ParseTopOfTower(const unsigned char *tower_data,
size_t tower_size,
char **protseq,
char **networkaddr,
char **endpoint)
{
const twr_empty_floor_t *protocol_floor;
const twr_empty_floor_t *floor4;
const struct connection_ops *protseq_ops = NULL;
RPC_STATUS status;
int i;
if (tower_size < sizeof(*protocol_floor))
return EPT_S_NOT_REGISTERED;
protocol_floor = (const twr_empty_floor_t *)tower_data;
tower_data += sizeof(*protocol_floor);
tower_size -= sizeof(*protocol_floor);
if ((protocol_floor->count_lhs != sizeof(protocol_floor->protid)) ||
(protocol_floor->count_rhs > tower_size))
return EPT_S_NOT_REGISTERED;
tower_data += protocol_floor->count_rhs;
tower_size -= protocol_floor->count_rhs;
floor4 = (const twr_empty_floor_t *)tower_data;
if ((tower_size < sizeof(*floor4)) ||
(floor4->count_lhs != sizeof(floor4->protid)))
return EPT_S_NOT_REGISTERED;
for(i = 0; i < ARRAYSIZE(conn_protseq_list); i++)
if ((protocol_floor->protid == conn_protseq_list[i].epm_protocols[0]) &&
(floor4->protid == conn_protseq_list[i].epm_protocols[1]))
{
protseq_ops = &conn_protseq_list[i];
break;
}
if (!protseq_ops)
return EPT_S_NOT_REGISTERED;
status = protseq_ops->parse_top_of_tower(tower_data, tower_size, networkaddr, endpoint);
if ((status == RPC_S_OK) && protseq)
{
*protseq = I_RpcAllocate(strlen(protseq_ops->name) + 1);
strcpy(*protseq, protseq_ops->name);
}
return status;
}
/***********************************************************************
* RpcNetworkIsProtseqValidW (RPCRT4.@)
*
* Checks if the given protocol sequence is known by the RPC system.
* If it is, returns RPC_S_OK, otherwise RPC_S_PROTSEQ_NOT_SUPPORTED.
*
*/
RPC_STATUS WINAPI RpcNetworkIsProtseqValidW(RPC_WSTR protseq)
{
char ps[0x10];
WideCharToMultiByte(CP_ACP, 0, protseq, -1,
ps, sizeof ps, NULL, NULL);
if (rpcrt4_get_conn_protseq_ops(ps))
return RPC_S_OK;
FIXME("Unknown protseq %s\n", debugstr_w(protseq));
return RPC_S_INVALID_RPC_PROTSEQ;
}
/***********************************************************************
* RpcNetworkIsProtseqValidA (RPCRT4.@)
*/
RPC_STATUS WINAPI RpcNetworkIsProtseqValidA(RPC_CSTR protseq)
{
UNICODE_STRING protseqW;
if (RtlCreateUnicodeStringFromAsciiz(&protseqW, (char*)protseq))
{
RPC_STATUS ret = RpcNetworkIsProtseqValidW(protseqW.Buffer);
RtlFreeUnicodeString(&protseqW);
return ret;
}
return RPC_S_OUT_OF_MEMORY;
}
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