394 lines
14 KiB
C
394 lines
14 KiB
C
/*
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* Associations
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*
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* Copyright 2007 Robert Shearman (for CodeWeavers)
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*
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*/
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#include <stdarg.h>
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#include <assert.h>
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#include "rpc.h"
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#include "rpcndr.h"
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#include "wine/unicode.h"
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#include "wine/debug.h"
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#include "rpc_binding.h"
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#include "rpc_assoc.h"
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#include "rpc_message.h"
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WINE_DEFAULT_DEBUG_CHANNEL(rpc);
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static CRITICAL_SECTION assoc_list_cs;
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static CRITICAL_SECTION_DEBUG assoc_list_cs_debug =
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{
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0, 0, &assoc_list_cs,
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{ &assoc_list_cs_debug.ProcessLocksList, &assoc_list_cs_debug.ProcessLocksList },
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0, 0, { (DWORD_PTR)(__FILE__ ": assoc_list_cs") }
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};
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static CRITICAL_SECTION assoc_list_cs = { &assoc_list_cs_debug, -1, 0, 0, 0, 0 };
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static struct list client_assoc_list = LIST_INIT(client_assoc_list);
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static struct list server_assoc_list = LIST_INIT(server_assoc_list);
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static LONG last_assoc_group_id;
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static RPC_STATUS RpcAssoc_Alloc(LPCSTR Protseq, LPCSTR NetworkAddr,
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LPCSTR Endpoint, LPCWSTR NetworkOptions,
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RpcAssoc **assoc_out)
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{
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RpcAssoc *assoc;
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assoc = HeapAlloc(GetProcessHeap(), 0, sizeof(*assoc));
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if (!assoc)
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return RPC_S_OUT_OF_RESOURCES;
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assoc->refs = 1;
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list_init(&assoc->free_connection_pool);
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InitializeCriticalSection(&assoc->cs);
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assoc->Protseq = RPCRT4_strdupA(Protseq);
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assoc->NetworkAddr = RPCRT4_strdupA(NetworkAddr);
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assoc->Endpoint = RPCRT4_strdupA(Endpoint);
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assoc->NetworkOptions = NetworkOptions ? RPCRT4_strdupW(NetworkOptions) : NULL;
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assoc->assoc_group_id = 0;
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list_init(&assoc->entry);
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*assoc_out = assoc;
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return RPC_S_OK;
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}
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RPC_STATUS RPCRT4_GetAssociation(LPCSTR Protseq, LPCSTR NetworkAddr,
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LPCSTR Endpoint, LPCWSTR NetworkOptions,
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RpcAssoc **assoc_out)
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{
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RpcAssoc *assoc;
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RPC_STATUS status;
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EnterCriticalSection(&assoc_list_cs);
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LIST_FOR_EACH_ENTRY(assoc, &client_assoc_list, RpcAssoc, entry)
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{
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if (!strcmp(Protseq, assoc->Protseq) &&
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!strcmp(NetworkAddr, assoc->NetworkAddr) &&
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!strcmp(Endpoint, assoc->Endpoint) &&
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((!assoc->NetworkOptions && !NetworkOptions) || !strcmpW(NetworkOptions, assoc->NetworkOptions)))
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{
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assoc->refs++;
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*assoc_out = assoc;
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LeaveCriticalSection(&assoc_list_cs);
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TRACE("using existing assoc %p\n", assoc);
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return RPC_S_OK;
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}
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}
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status = RpcAssoc_Alloc(Protseq, NetworkAddr, Endpoint, NetworkOptions, &assoc);
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if (status != RPC_S_OK)
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{
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LeaveCriticalSection(&assoc_list_cs);
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return status;
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}
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list_add_head(&client_assoc_list, &assoc->entry);
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*assoc_out = assoc;
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LeaveCriticalSection(&assoc_list_cs);
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TRACE("new assoc %p\n", assoc);
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return RPC_S_OK;
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}
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RPC_STATUS RpcServerAssoc_GetAssociation(LPCSTR Protseq, LPCSTR NetworkAddr,
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LPCSTR Endpoint, LPCWSTR NetworkOptions,
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unsigned long assoc_gid,
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RpcAssoc **assoc_out)
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{
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RpcAssoc *assoc;
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RPC_STATUS status;
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EnterCriticalSection(&assoc_list_cs);
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if (assoc_gid)
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{
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LIST_FOR_EACH_ENTRY(assoc, &server_assoc_list, RpcAssoc, entry)
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{
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/* FIXME: NetworkAddr shouldn't be NULL */
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if (assoc->assoc_group_id == assoc_gid &&
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!strcmp(Protseq, assoc->Protseq) &&
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(!NetworkAddr || !assoc->NetworkAddr || !strcmp(NetworkAddr, assoc->NetworkAddr)) &&
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!strcmp(Endpoint, assoc->Endpoint) &&
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((!assoc->NetworkOptions == !NetworkOptions) &&
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(!NetworkOptions || !strcmpW(NetworkOptions, assoc->NetworkOptions))))
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{
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assoc->refs++;
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*assoc_out = assoc;
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LeaveCriticalSection(&assoc_list_cs);
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TRACE("using existing assoc %p\n", assoc);
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return RPC_S_OK;
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}
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}
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*assoc_out = NULL;
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LeaveCriticalSection(&assoc_list_cs);
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return RPC_S_NO_CONTEXT_AVAILABLE;
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}
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status = RpcAssoc_Alloc(Protseq, NetworkAddr, Endpoint, NetworkOptions, &assoc);
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if (status != RPC_S_OK)
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{
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LeaveCriticalSection(&assoc_list_cs);
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return status;
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}
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assoc->assoc_group_id = InterlockedIncrement(&last_assoc_group_id);
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list_add_head(&server_assoc_list, &assoc->entry);
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*assoc_out = assoc;
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LeaveCriticalSection(&assoc_list_cs);
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TRACE("new assoc %p\n", assoc);
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return RPC_S_OK;
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}
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ULONG RpcAssoc_Release(RpcAssoc *assoc)
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{
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ULONG refs;
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EnterCriticalSection(&assoc_list_cs);
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refs = --assoc->refs;
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if (!refs)
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list_remove(&assoc->entry);
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LeaveCriticalSection(&assoc_list_cs);
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if (!refs)
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{
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RpcConnection *Connection, *cursor2;
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TRACE("destroying assoc %p\n", assoc);
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LIST_FOR_EACH_ENTRY_SAFE(Connection, cursor2, &assoc->free_connection_pool, RpcConnection, conn_pool_entry)
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{
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list_remove(&Connection->conn_pool_entry);
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RPCRT4_DestroyConnection(Connection);
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}
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HeapFree(GetProcessHeap(), 0, assoc->NetworkOptions);
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HeapFree(GetProcessHeap(), 0, assoc->Endpoint);
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HeapFree(GetProcessHeap(), 0, assoc->NetworkAddr);
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HeapFree(GetProcessHeap(), 0, assoc->Protseq);
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DeleteCriticalSection(&assoc->cs);
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HeapFree(GetProcessHeap(), 0, assoc);
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}
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return refs;
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}
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#define ROUND_UP(value, alignment) (((value) + ((alignment) - 1)) & ~((alignment)-1))
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static RPC_STATUS RpcAssoc_BindConnection(const RpcAssoc *assoc, RpcConnection *conn,
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const RPC_SYNTAX_IDENTIFIER *InterfaceId,
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const RPC_SYNTAX_IDENTIFIER *TransferSyntax)
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{
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RpcPktHdr *hdr;
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RpcPktHdr *response_hdr;
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RPC_MESSAGE msg;
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RPC_STATUS status;
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TRACE("sending bind request to server\n");
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hdr = RPCRT4_BuildBindHeader(NDR_LOCAL_DATA_REPRESENTATION,
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RPC_MAX_PACKET_SIZE, RPC_MAX_PACKET_SIZE,
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assoc->assoc_group_id,
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InterfaceId, TransferSyntax);
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status = RPCRT4_Send(conn, hdr, NULL, 0);
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RPCRT4_FreeHeader(hdr);
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if (status != RPC_S_OK)
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return status;
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status = RPCRT4_Receive(conn, &response_hdr, &msg);
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if (status != RPC_S_OK)
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{
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ERR("receive failed\n");
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return status;
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}
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switch (response_hdr->common.ptype)
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{
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case PKT_BIND_ACK:
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{
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RpcAddressString *server_address = msg.Buffer;
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if ((msg.BufferLength >= FIELD_OFFSET(RpcAddressString, string[0])) ||
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(msg.BufferLength >= ROUND_UP(FIELD_OFFSET(RpcAddressString, string[server_address->length]), 4)))
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{
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unsigned short remaining = msg.BufferLength -
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ROUND_UP(FIELD_OFFSET(RpcAddressString, string[server_address->length]), 4);
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RpcResults *results = (RpcResults*)((ULONG_PTR)server_address +
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ROUND_UP(FIELD_OFFSET(RpcAddressString, string[server_address->length]), 4));
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if ((results->num_results == 1) && (remaining >= sizeof(*results)))
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{
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switch (results->results[0].result)
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{
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case RESULT_ACCEPT:
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conn->assoc_group_id = response_hdr->bind_ack.assoc_gid;
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conn->MaxTransmissionSize = response_hdr->bind_ack.max_tsize;
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conn->ActiveInterface = *InterfaceId;
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break;
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case RESULT_PROVIDER_REJECTION:
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switch (results->results[0].reason)
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{
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case REASON_ABSTRACT_SYNTAX_NOT_SUPPORTED:
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ERR("syntax %s, %d.%d not supported\n",
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debugstr_guid(&InterfaceId->SyntaxGUID),
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InterfaceId->SyntaxVersion.MajorVersion,
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InterfaceId->SyntaxVersion.MinorVersion);
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status = RPC_S_UNKNOWN_IF;
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break;
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case REASON_TRANSFER_SYNTAXES_NOT_SUPPORTED:
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ERR("transfer syntax not supported\n");
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status = RPC_S_SERVER_UNAVAILABLE;
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break;
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case REASON_NONE:
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default:
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status = RPC_S_CALL_FAILED_DNE;
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}
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break;
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case RESULT_USER_REJECTION:
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default:
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ERR("rejection result %d\n", results->results[0].result);
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status = RPC_S_CALL_FAILED_DNE;
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}
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}
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else
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{
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ERR("incorrect results size\n");
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status = RPC_S_CALL_FAILED_DNE;
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}
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}
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else
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{
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ERR("bind ack packet too small (%d)\n", msg.BufferLength);
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status = RPC_S_PROTOCOL_ERROR;
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}
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break;
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}
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case PKT_BIND_NACK:
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switch (response_hdr->bind_nack.reject_reason)
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{
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case REJECT_LOCAL_LIMIT_EXCEEDED:
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case REJECT_TEMPORARY_CONGESTION:
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ERR("server too busy\n");
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status = RPC_S_SERVER_TOO_BUSY;
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break;
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case REJECT_PROTOCOL_VERSION_NOT_SUPPORTED:
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ERR("protocol version not supported\n");
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status = RPC_S_PROTOCOL_ERROR;
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break;
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case REJECT_UNKNOWN_AUTHN_SERVICE:
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ERR("unknown authentication service\n");
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status = RPC_S_UNKNOWN_AUTHN_SERVICE;
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break;
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case REJECT_INVALID_CHECKSUM:
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ERR("invalid checksum\n");
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status = ERROR_ACCESS_DENIED;
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break;
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default:
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ERR("rejected bind for reason %d\n", response_hdr->bind_nack.reject_reason);
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status = RPC_S_CALL_FAILED_DNE;
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}
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break;
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default:
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ERR("wrong packet type received %d\n", response_hdr->common.ptype);
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status = RPC_S_PROTOCOL_ERROR;
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break;
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}
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I_RpcFreeBuffer(&msg);
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RPCRT4_FreeHeader(response_hdr);
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return status;
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}
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static RpcConnection *RpcAssoc_GetIdleConnection(RpcAssoc *assoc,
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const RPC_SYNTAX_IDENTIFIER *InterfaceId,
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const RPC_SYNTAX_IDENTIFIER *TransferSyntax, const RpcAuthInfo *AuthInfo,
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const RpcQualityOfService *QOS)
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{
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RpcConnection *Connection;
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EnterCriticalSection(&assoc->cs);
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/* try to find a compatible connection from the connection pool */
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LIST_FOR_EACH_ENTRY(Connection, &assoc->free_connection_pool, RpcConnection, conn_pool_entry)
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{
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if (!memcmp(&Connection->ActiveInterface, InterfaceId,
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sizeof(RPC_SYNTAX_IDENTIFIER)) &&
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RpcAuthInfo_IsEqual(Connection->AuthInfo, AuthInfo) &&
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RpcQualityOfService_IsEqual(Connection->QOS, QOS))
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{
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list_remove(&Connection->conn_pool_entry);
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LeaveCriticalSection(&assoc->cs);
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TRACE("got connection from pool %p\n", Connection);
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return Connection;
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}
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}
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LeaveCriticalSection(&assoc->cs);
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return NULL;
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}
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RPC_STATUS RpcAssoc_GetClientConnection(RpcAssoc *assoc,
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const RPC_SYNTAX_IDENTIFIER *InterfaceId,
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const RPC_SYNTAX_IDENTIFIER *TransferSyntax, RpcAuthInfo *AuthInfo,
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RpcQualityOfService *QOS, RpcConnection **Connection)
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{
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RpcConnection *NewConnection;
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RPC_STATUS status;
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*Connection = RpcAssoc_GetIdleConnection(assoc, InterfaceId, TransferSyntax, AuthInfo, QOS);
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if (*Connection)
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return RPC_S_OK;
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/* create a new connection */
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status = RPCRT4_CreateConnection(&NewConnection, FALSE /* is this a server connection? */,
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assoc->Protseq, assoc->NetworkAddr,
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assoc->Endpoint, assoc->NetworkOptions,
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AuthInfo, QOS);
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if (status != RPC_S_OK)
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return status;
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status = RPCRT4_OpenClientConnection(NewConnection);
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if (status != RPC_S_OK)
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{
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RPCRT4_DestroyConnection(NewConnection);
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return status;
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}
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status = RpcAssoc_BindConnection(assoc, NewConnection, InterfaceId, TransferSyntax);
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if (status != RPC_S_OK)
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{
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RPCRT4_DestroyConnection(NewConnection);
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return status;
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}
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*Connection = NewConnection;
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return RPC_S_OK;
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}
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void RpcAssoc_ReleaseIdleConnection(RpcAssoc *assoc, RpcConnection *Connection)
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{
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assert(!Connection->server);
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EnterCriticalSection(&assoc->cs);
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if (!assoc->assoc_group_id) assoc->assoc_group_id = Connection->assoc_group_id;
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list_add_head(&assoc->free_connection_pool, &Connection->conn_pool_entry);
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LeaveCriticalSection(&assoc->cs);
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}
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