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Sweden-Number/dlls/rpcrt4/rpc_epmap.c

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/*
* RPC endpoint mapper
*
* Copyright 2002 Greg Turner
* Copyright 2001 Ove Kåven, TransGaming Technologies
* Copyright 2008 Robert Shearman (for CodeWeavers)
*
* 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 <stdarg.h>
#include "windef.h"
#include "winbase.h"
#include "winerror.h"
#include "rpc.h"
#include "wine/debug.h"
#include "wine/exception.h"
#include "rpc_binding.h"
#include "epm.h"
#include "epm_towers.h"
WINE_DEFAULT_DEBUG_CHANNEL(ole);
/* The "real" RPC portmapper endpoints that I know of are:
*
* ncadg_ip_udp: 135
* ncacn_ip_tcp: 135
* ncacn_np: \\pipe\epmapper
* ncalrpc: epmapper
* ncacn_http: 593
*
* If the user's machine ran a DCE RPC daemon, it would
* probably be possible to connect to it, but there are many
* reasons not to, like:
* - the user probably does *not* run one, and probably
* shouldn't be forced to run one just for local COM
* - very few Unix systems use DCE RPC... if they run a RPC
* daemon at all, it's usually Sun RPC
* - DCE RPC registrations are persistent and saved on disk,
* while MS-RPC registrations are documented as non-persistent
* and stored only in RAM, and auto-destroyed when the process
* dies (something DCE RPC can't do)
*
* Of course, if the user *did* want to run a DCE RPC daemon anyway,
* there would be interoperability advantages, like the possibility
* of running a fully functional DCOM server using Wine...
*/
static const struct epm_endpoints
{
const char *protseq;
const char *endpoint;
} epm_endpoints[] =
{
{ "ncacn_np", "\\pipe\\epmapper" },
{ "ncacn_ip_tcp", "135" },
{ "ncacn_ip_udp", "135" },
{ "ncalrpc", "epmapper" },
{ "ncacn_http", "593" },
};
static BOOL start_rpcss(void)
{
PROCESS_INFORMATION pi;
STARTUPINFOW si;
static WCHAR cmd[6];
static const WCHAR rpcss[] = {'r','p','c','s','s',0};
BOOL rslt;
TRACE("\n");
ZeroMemory(&pi, sizeof(PROCESS_INFORMATION));
ZeroMemory(&si, sizeof(STARTUPINFOA));
si.cb = sizeof(STARTUPINFOA);
memcpy(cmd, rpcss, sizeof(rpcss));
rslt = CreateProcessW(
NULL, /* executable */
cmd, /* command line */
NULL, /* process security attributes */
NULL, /* primary thread security attributes */
FALSE, /* inherit handles */
0, /* creation flags */
NULL, /* use parent's environment */
NULL, /* use parent's current directory */
&si, /* STARTUPINFO pointer */
&pi /* PROCESS_INFORMATION */
);
if (rslt)
{
CloseHandle(pi.hProcess);
CloseHandle(pi.hThread);
Sleep(100);
}
return rslt;
}
static inline BOOL is_epm_destination_local(RPC_BINDING_HANDLE handle)
{
RpcBinding *bind = (RpcBinding *)handle;
const char *protseq = bind->Protseq;
const char *network_addr = bind->NetworkAddr;
return ((!strcmp(protseq, "ncalrpc") && !network_addr) ||
(!strcmp(protseq, "ncacn_np") &&
(!network_addr || !strcmp(network_addr, "."))));
}
static RPC_STATUS get_epm_handle_client(RPC_BINDING_HANDLE handle, RPC_BINDING_HANDLE *epm_handle)
{
RpcBinding *bind = (RpcBinding *)handle;
const char * pszEndpoint = NULL;
RPC_STATUS status;
RpcBinding* epm_bind;
unsigned int i;
if (bind->server)
return RPC_S_INVALID_BINDING;
for (i = 0; i < sizeof(epm_endpoints)/sizeof(epm_endpoints[0]); i++)
if (!strcmp(bind->Protseq, epm_endpoints[i].protseq))
pszEndpoint = epm_endpoints[i].endpoint;
if (!pszEndpoint)
{
FIXME("no endpoint for the endpoint-mapper found for protseq %s\n", debugstr_a(bind->Protseq));
return RPC_S_PROTSEQ_NOT_SUPPORTED;
}
status = RpcBindingCopy(handle, epm_handle);
if (status != RPC_S_OK) return status;
epm_bind = (RpcBinding*)*epm_handle;
if (epm_bind->AuthInfo)
{
/* don't bother with authenticating against the EPM by default
* (see EnableAuthEpResolution registry value) */
RpcAuthInfo_Release(epm_bind->AuthInfo);
epm_bind->AuthInfo = NULL;
}
RPCRT4_ResolveBinding(epm_bind, pszEndpoint);
TRACE("RPC_S_OK\n");
return RPC_S_OK;
}
static RPC_STATUS get_epm_handle_server(RPC_BINDING_HANDLE *epm_handle)
{
unsigned char string_binding[] = "ncacn_np:.[\\\\pipe\\\\epmapper]";
return RpcBindingFromStringBindingA(string_binding, epm_handle);
}
static LONG WINAPI rpc_filter(EXCEPTION_POINTERS *__eptr)
{
switch (GetExceptionCode())
{
case EXCEPTION_ACCESS_VIOLATION:
case EXCEPTION_ILLEGAL_INSTRUCTION:
return EXCEPTION_CONTINUE_SEARCH;
default:
return EXCEPTION_EXECUTE_HANDLER;
}
}
/***********************************************************************
* RpcEpRegisterA (RPCRT4.@)
*/
RPC_STATUS WINAPI RpcEpRegisterA( RPC_IF_HANDLE IfSpec, RPC_BINDING_VECTOR *BindingVector,
UUID_VECTOR *UuidVector, RPC_CSTR Annotation )
{
PRPC_SERVER_INTERFACE If = (PRPC_SERVER_INTERFACE)IfSpec;
unsigned long i;
RPC_STATUS status = RPC_S_OK;
error_status_t status2;
ept_entry_t *entries;
handle_t handle;
TRACE("(%p,%p,%p,%s)\n", IfSpec, BindingVector, UuidVector, debugstr_a((char*)Annotation));
TRACE(" ifid=%s\n", debugstr_guid(&If->InterfaceId.SyntaxGUID));
for (i=0; i<BindingVector->Count; i++) {
RpcBinding* bind = (RpcBinding*)(BindingVector->BindingH[i]);
TRACE(" protseq[%ld]=%s\n", i, debugstr_a(bind->Protseq));
TRACE(" endpoint[%ld]=%s\n", i, debugstr_a(bind->Endpoint));
}
if (UuidVector) {
for (i=0; i<UuidVector->Count; i++)
TRACE(" obj[%ld]=%s\n", i, debugstr_guid(UuidVector->Uuid[i]));
}
if (!BindingVector->Count) return RPC_S_OK;
entries = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*entries) * BindingVector->Count * (UuidVector ? UuidVector->Count : 1));
if (!entries)
return RPC_S_OUT_OF_MEMORY;
status = get_epm_handle_server(&handle);
if (status != RPC_S_OK)
{
HeapFree(GetProcessHeap(), 0, entries);
return status;
}
for (i = 0; i < BindingVector->Count; i++)
{
unsigned j;
RpcBinding* bind = (RpcBinding*)(BindingVector->BindingH[i]);
for (j = 0; j < (UuidVector ? UuidVector->Count : 1); j++)
{
int len = strlen((char *)Annotation);
status = TowerConstruct(&If->InterfaceId, &If->TransferSyntax,
bind->Protseq, bind->Endpoint,
bind->NetworkAddr,
&entries[i*(UuidVector ? UuidVector->Count : 1) + j].tower);
if (status != RPC_S_OK) break;
if (UuidVector)
memcpy(&entries[i * UuidVector->Count].object, &UuidVector->Uuid[j], sizeof(GUID));
else
memset(&entries[i].object, 0, sizeof(entries[i].object));
memcpy(entries[i].annotation, Annotation, min(len + 1, ept_max_annotation_size));
}
}
if (status == RPC_S_OK)
{
while (TRUE)
{
__TRY
{
ept_insert(handle, BindingVector->Count * (UuidVector ? UuidVector->Count : 1),
entries, TRUE, &status2);
}
__EXCEPT(rpc_filter)
{
status2 = GetExceptionCode();
}
__ENDTRY
if (status2 == RPC_S_SERVER_UNAVAILABLE &&
is_epm_destination_local(handle))
{
if (start_rpcss())
continue;
}
if (status2 != RPC_S_OK)
ERR("ept_insert failed with error %d\n", status2);
status = status2; /* FIXME: convert status? */
break;
}
}
RpcBindingFree(&handle);
for (i = 0; i < BindingVector->Count; i++)
{
unsigned j;
for (j = 0; j < (UuidVector ? UuidVector->Count : 1); j++)
I_RpcFree(entries[i*(UuidVector ? UuidVector->Count : 1) + j].tower);
}
HeapFree(GetProcessHeap(), 0, entries);
return status;
}
/***********************************************************************
* RpcEpUnregister (RPCRT4.@)
*/
RPC_STATUS WINAPI RpcEpUnregister( RPC_IF_HANDLE IfSpec, RPC_BINDING_VECTOR *BindingVector,
UUID_VECTOR *UuidVector )
{
PRPC_SERVER_INTERFACE If = (PRPC_SERVER_INTERFACE)IfSpec;
unsigned long i;
RPC_STATUS status = RPC_S_OK;
error_status_t status2;
ept_entry_t *entries;
handle_t handle;
TRACE("(%p,%p,%p)\n", IfSpec, BindingVector, UuidVector);
TRACE(" ifid=%s\n", debugstr_guid(&If->InterfaceId.SyntaxGUID));
for (i=0; i<BindingVector->Count; i++) {
RpcBinding* bind = (RpcBinding*)(BindingVector->BindingH[i]);
TRACE(" protseq[%ld]=%s\n", i, debugstr_a(bind->Protseq));
TRACE(" endpoint[%ld]=%s\n", i, debugstr_a(bind->Endpoint));
}
if (UuidVector) {
for (i=0; i<UuidVector->Count; i++)
TRACE(" obj[%ld]=%s\n", i, debugstr_guid(UuidVector->Uuid[i]));
}
entries = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*entries) * BindingVector->Count * (UuidVector ? UuidVector->Count : 1));
if (!entries)
return RPC_S_OUT_OF_MEMORY;
status = get_epm_handle_server(&handle);
if (status != RPC_S_OK)
{
HeapFree(GetProcessHeap(), 0, entries);
return status;
}
for (i = 0; i < BindingVector->Count; i++)
{
unsigned j;
RpcBinding* bind = (RpcBinding*)(BindingVector->BindingH[i]);
for (j = 0; j < (UuidVector ? UuidVector->Count : 1); j++)
{
status = TowerConstruct(&If->InterfaceId, &If->TransferSyntax,
bind->Protseq, bind->Endpoint,
bind->NetworkAddr,
&entries[i*(UuidVector ? UuidVector->Count : 1) + j].tower);
if (status != RPC_S_OK) break;
if (UuidVector)
memcpy(&entries[i * UuidVector->Count + j].object, &UuidVector->Uuid[j], sizeof(GUID));
else
memset(&entries[i].object, 0, sizeof(entries[i].object));
}
}
if (status == RPC_S_OK)
{
__TRY
{
ept_insert(handle, BindingVector->Count * (UuidVector ? UuidVector->Count : 1),
entries, TRUE, &status2);
}
__EXCEPT(rpc_filter)
{
status2 = GetExceptionCode();
}
__ENDTRY
if (status2 == RPC_S_SERVER_UNAVAILABLE)
status2 = EPT_S_NOT_REGISTERED;
if (status2 != RPC_S_OK)
ERR("ept_insert failed with error %d\n", status2);
status = status2; /* FIXME: convert status? */
}
RpcBindingFree(&handle);
for (i = 0; i < BindingVector->Count; i++)
{
unsigned j;
for (j = 0; j < (UuidVector ? UuidVector->Count : 1); j++)
I_RpcFree(entries[i*(UuidVector ? UuidVector->Count : 1) + j].tower);
}
HeapFree(GetProcessHeap(), 0, entries);
return status;
}
/***********************************************************************
* RpcEpResolveBinding (RPCRT4.@)
*/
RPC_STATUS WINAPI RpcEpResolveBinding( RPC_BINDING_HANDLE Binding, RPC_IF_HANDLE IfSpec )
{
PRPC_CLIENT_INTERFACE If = (PRPC_CLIENT_INTERFACE)IfSpec;
RpcBinding* bind = (RpcBinding*)Binding;
RPC_STATUS status;
error_status_t status2;
handle_t handle;
ept_lookup_handle_t entry_handle = NULL;
twr_t *tower;
twr_t *towers[4] = { NULL };
unsigned32 num_towers, i;
GUID uuid = GUID_NULL;
char *resolved_endpoint = NULL;
TRACE("(%p,%p)\n", Binding, IfSpec);
TRACE(" protseq=%s\n", debugstr_a(bind->Protseq));
TRACE(" obj=%s\n", debugstr_guid(&bind->ObjectUuid));
TRACE(" networkaddr=%s\n", debugstr_a(bind->NetworkAddr));
TRACE(" ifid=%s\n", debugstr_guid(&If->InterfaceId.SyntaxGUID));
/* just return for fully bound handles */
if (bind->Endpoint && (bind->Endpoint[0] != '\0'))
return RPC_S_OK;
status = get_epm_handle_client(Binding, &handle);
if (status != RPC_S_OK) return status;
status = TowerConstruct(&If->InterfaceId, &If->TransferSyntax, bind->Protseq,
((RpcBinding *)handle)->Endpoint,
bind->NetworkAddr, &tower);
if (status != RPC_S_OK)
{
WARN("couldn't get tower\n");
RpcBindingFree(&handle);
return status;
}
while (TRUE)
{
__TRY
{
ept_map(handle, &uuid, tower, &entry_handle, sizeof(towers)/sizeof(towers[0]), &num_towers, towers, &status2);
/* FIXME: translate status2? */
}
__EXCEPT(rpc_filter)
{
status2 = GetExceptionCode();
}
__ENDTRY
if (status2 == RPC_S_SERVER_UNAVAILABLE &&
is_epm_destination_local(handle))
{
if (start_rpcss())
continue;
}
break;
};
RpcBindingFree(&handle);
I_RpcFree(tower);
if (status2 != RPC_S_OK)
{
ERR("ept_map failed for ifid %s, protseq %s, networkaddr %s\n", debugstr_guid(&If->TransferSyntax.SyntaxGUID), bind->Protseq, bind->NetworkAddr);
return status2;
}
for (i = 0; i < num_towers; i++)
{
/* only parse the tower if we haven't already found a suitable
* endpoint, otherwise just free the tower */
if (!resolved_endpoint)
{
status = TowerExplode(towers[i], NULL, NULL, NULL, &resolved_endpoint, NULL);
TRACE("status = %d\n", status);
}
I_RpcFree(towers[i]);
}
if (resolved_endpoint)
{
RPCRT4_ResolveBinding(Binding, resolved_endpoint);
I_RpcFree(resolved_endpoint);
return RPC_S_OK;
}
WARN("couldn't find an endpoint\n");
return EPT_S_NOT_REGISTERED;
}
/*****************************************************************************
* TowerExplode (RPCRT4.@)
*/
RPC_STATUS WINAPI TowerExplode(
const twr_t *tower, PRPC_SYNTAX_IDENTIFIER object, PRPC_SYNTAX_IDENTIFIER syntax,
char **protseq, char **endpoint, char **address)
{
size_t tower_size;
RPC_STATUS status;
const unsigned char *p;
u_int16 floor_count;
const twr_uuid_floor_t *object_floor;
const twr_uuid_floor_t *syntax_floor;
TRACE("(%p, %p, %p, %p, %p, %p)\n", tower, object, syntax, protseq,
endpoint, address);
if (protseq)
*protseq = NULL;
if (endpoint)
*endpoint = NULL;
if (address)
*address = NULL;
tower_size = tower->tower_length;
if (tower_size < sizeof(u_int16))
return EPT_S_NOT_REGISTERED;
p = &tower->tower_octet_string[0];
floor_count = *(const u_int16 *)p;
p += sizeof(u_int16);
tower_size -= sizeof(u_int16);
TRACE("floor_count: %d\n", floor_count);
/* FIXME: should we do something with the floor count? at the moment we don't */
if (tower_size < sizeof(*object_floor) + sizeof(*syntax_floor))
return EPT_S_NOT_REGISTERED;
object_floor = (const twr_uuid_floor_t *)p;
p += sizeof(*object_floor);
tower_size -= sizeof(*object_floor);
syntax_floor = (const twr_uuid_floor_t *)p;
p += sizeof(*syntax_floor);
tower_size -= sizeof(*syntax_floor);
if ((object_floor->count_lhs != sizeof(object_floor->protid) +
sizeof(object_floor->uuid) + sizeof(object_floor->major_version)) ||
(object_floor->protid != EPM_PROTOCOL_UUID) ||
(object_floor->count_rhs != sizeof(object_floor->minor_version)))
return EPT_S_NOT_REGISTERED;
if ((syntax_floor->count_lhs != sizeof(syntax_floor->protid) +
sizeof(syntax_floor->uuid) + sizeof(syntax_floor->major_version)) ||
(syntax_floor->protid != EPM_PROTOCOL_UUID) ||
(syntax_floor->count_rhs != sizeof(syntax_floor->minor_version)))
return EPT_S_NOT_REGISTERED;
status = RpcTransport_ParseTopOfTower(p, tower_size, protseq, address, endpoint);
if ((status == RPC_S_OK) && syntax && object)
{
syntax->SyntaxGUID = syntax_floor->uuid;
syntax->SyntaxVersion.MajorVersion = syntax_floor->major_version;
syntax->SyntaxVersion.MinorVersion = syntax_floor->minor_version;
object->SyntaxGUID = object_floor->uuid;
object->SyntaxVersion.MajorVersion = object_floor->major_version;
object->SyntaxVersion.MinorVersion = object_floor->minor_version;
}
return status;
}
/***********************************************************************
* TowerConstruct (RPCRT4.@)
*/
RPC_STATUS WINAPI TowerConstruct(
const RPC_SYNTAX_IDENTIFIER *object, const RPC_SYNTAX_IDENTIFIER *syntax,
const char *protseq, const char *endpoint, const char *address,
twr_t **tower)
{
size_t tower_size;
RPC_STATUS status;
unsigned char *p;
twr_uuid_floor_t *object_floor;
twr_uuid_floor_t *syntax_floor;
TRACE("(%p, %p, %s, %s, %s, %p)\n", object, syntax, debugstr_a(protseq),
debugstr_a(endpoint), debugstr_a(address), tower);
*tower = NULL;
status = RpcTransport_GetTopOfTower(NULL, &tower_size, protseq, address, endpoint);
if (status != RPC_S_OK)
return status;
tower_size += sizeof(u_int16) + sizeof(*object_floor) + sizeof(*syntax_floor);
*tower = I_RpcAllocate(FIELD_OFFSET(twr_t, tower_octet_string[tower_size]));
if (!*tower)
return RPC_S_OUT_OF_RESOURCES;
(*tower)->tower_length = tower_size;
p = &(*tower)->tower_octet_string[0];
*(u_int16 *)p = 5; /* number of floors */
p += sizeof(u_int16);
object_floor = (twr_uuid_floor_t *)p;
p += sizeof(*object_floor);
syntax_floor = (twr_uuid_floor_t *)p;
p += sizeof(*syntax_floor);
object_floor->count_lhs = sizeof(object_floor->protid) + sizeof(object_floor->uuid) +
sizeof(object_floor->major_version);
object_floor->protid = EPM_PROTOCOL_UUID;
object_floor->count_rhs = sizeof(object_floor->minor_version);
object_floor->uuid = object->SyntaxGUID;
object_floor->major_version = object->SyntaxVersion.MajorVersion;
object_floor->minor_version = object->SyntaxVersion.MinorVersion;
syntax_floor->count_lhs = sizeof(syntax_floor->protid) + sizeof(syntax_floor->uuid) +
sizeof(syntax_floor->major_version);
syntax_floor->protid = EPM_PROTOCOL_UUID;
syntax_floor->count_rhs = sizeof(syntax_floor->minor_version);
syntax_floor->uuid = syntax->SyntaxGUID;
syntax_floor->major_version = syntax->SyntaxVersion.MajorVersion;
syntax_floor->minor_version = syntax->SyntaxVersion.MinorVersion;
status = RpcTransport_GetTopOfTower(p, &tower_size, protseq, address, endpoint);
if (status != RPC_S_OK)
{
I_RpcFree(*tower);
*tower = NULL;
return status;
}
return RPC_S_OK;
}
void __RPC_FAR * __RPC_USER MIDL_user_allocate(SIZE_T len)
{
return HeapAlloc(GetProcessHeap(), 0, len);
}
void __RPC_USER MIDL_user_free(void __RPC_FAR * ptr)
{
HeapFree(GetProcessHeap(), 0, ptr);
}
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