558 lines
18 KiB
C
558 lines
18 KiB
C
/*
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* COM proxy implementation
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*
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* Copyright 2001 Ove Kåven, TransGaming Technologies
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* Copyright 2009 Alexandre Julliard
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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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#include <stdarg.h>
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#define COBJMACROS
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#include "windef.h"
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#include "winbase.h"
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#include "winerror.h"
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#include "objbase.h"
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#include "rpcproxy.h"
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#include "cpsf.h"
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#include "ndr_misc.h"
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#include "ndr_stubless.h"
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#include "wine/asm.h"
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#include "wine/debug.h"
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WINE_DEFAULT_DEBUG_CHANNEL(ole);
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static const IRpcProxyBufferVtbl StdProxy_Vtbl;
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static inline StdProxyImpl *impl_from_IRpcProxyBuffer(IRpcProxyBuffer *iface)
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{
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return CONTAINING_RECORD(iface, StdProxyImpl, IRpcProxyBuffer_iface);
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}
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static inline StdProxyImpl *impl_from_proxy_obj( void *iface )
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{
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return CONTAINING_RECORD(iface, StdProxyImpl, PVtbl);
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}
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#ifdef __i386__
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extern void call_stubless_func(void);
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__ASM_GLOBAL_FUNC(call_stubless_func,
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"movl 4(%esp),%ecx\n\t" /* This pointer */
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"movl (%ecx),%ecx\n\t" /* This->lpVtbl */
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"movl -8(%ecx),%ecx\n\t" /* MIDL_STUBLESS_PROXY_INFO */
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"movl 8(%ecx),%edx\n\t" /* info->FormatStringOffset */
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"movzwl (%edx,%eax,2),%edx\n\t" /* FormatStringOffset[index] */
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"addl 4(%ecx),%edx\n\t" /* info->ProcFormatString + offset */
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"movzbl 1(%edx),%eax\n\t" /* Oi_flags */
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"andl $0x08,%eax\n\t" /* Oi_HAS_RPCFLAGS */
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"shrl $1,%eax\n\t"
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"movzwl 4(%edx,%eax),%eax\n\t" /* arguments size */
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"pushl %eax\n\t"
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__ASM_CFI(".cfi_adjust_cfa_offset 4\n\t")
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"leal 8(%esp),%eax\n\t" /* &This */
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"pushl %eax\n\t"
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__ASM_CFI(".cfi_adjust_cfa_offset 4\n\t")
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"pushl %edx\n\t" /* format string */
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__ASM_CFI(".cfi_adjust_cfa_offset 4\n\t")
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"pushl (%ecx)\n\t" /* info->pStubDesc */
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__ASM_CFI(".cfi_adjust_cfa_offset 4\n\t")
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"call " __ASM_NAME("ndr_client_call") "\n\t"
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"leal 12(%esp),%esp\n\t"
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__ASM_CFI(".cfi_adjust_cfa_offset -12\n\t")
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"popl %edx\n\t" /* arguments size */
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__ASM_CFI(".cfi_adjust_cfa_offset -4\n\t")
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"movl (%esp),%ecx\n\t" /* return address */
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"addl %edx,%esp\n\t"
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"jmp *%ecx" );
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#include "pshpack1.h"
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struct thunk
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{
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BYTE mov_eax;
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DWORD index;
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BYTE jmp;
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LONG handler;
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};
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#include "poppack.h"
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static inline void init_thunk( struct thunk *thunk, unsigned int index )
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{
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thunk->mov_eax = 0xb8; /* movl $n,%eax */
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thunk->index = index;
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thunk->jmp = 0xe9; /* jmp */
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thunk->handler = (char *)call_stubless_func - (char *)(&thunk->handler + 1);
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}
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#elif defined(__x86_64__)
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extern void call_stubless_func(void);
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__ASM_GLOBAL_FUNC(call_stubless_func,
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"subq $0x38,%rsp\n\t"
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__ASM_SEH(".seh_stackalloc 0x38\n\t")
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__ASM_SEH(".seh_endprologue\n\t")
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__ASM_CFI(".cfi_adjust_cfa_offset 0x38\n\t")
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"movq %rcx,0x40(%rsp)\n\t"
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"movq %rdx,0x48(%rsp)\n\t"
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"movq %r8,0x50(%rsp)\n\t"
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"movq %r9,0x58(%rsp)\n\t"
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"leaq 0x40(%rsp),%r8\n\t" /* &This */
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"movq (%rcx),%rcx\n\t" /* This->lpVtbl */
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"movq -0x10(%rcx),%rcx\n\t" /* MIDL_STUBLESS_PROXY_INFO */
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"movq 0x10(%rcx),%rdx\n\t" /* info->FormatStringOffset */
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"movzwq (%rdx,%r10,2),%rdx\n\t" /* FormatStringOffset[index] */
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"addq 8(%rcx),%rdx\n\t" /* info->ProcFormatString + offset */
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"movq (%rcx),%rcx\n\t" /* info->pStubDesc */
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"movq %xmm1,0x20(%rsp)\n\t"
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"movq %xmm2,0x28(%rsp)\n\t"
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"movq %xmm3,0x30(%rsp)\n\t"
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"leaq 0x18(%rsp),%r9\n\t" /* fpu_args */
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"call " __ASM_NAME("ndr_client_call") "\n\t"
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"addq $0x38,%rsp\n\t"
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__ASM_CFI(".cfi_adjust_cfa_offset -0x38\n\t")
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"ret" );
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#include "pshpack1.h"
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struct thunk
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{
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BYTE mov_r10[3];
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DWORD index;
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BYTE mov_rax[2];
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void *call_stubless;
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BYTE jmp_rax[2];
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};
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#include "poppack.h"
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static const struct thunk thunk_template =
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{
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{ 0x49, 0xc7, 0xc2 }, 0, /* movq $index,%r10 */
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{ 0x48, 0xb8 }, 0, /* movq $call_stubless_func,%rax */
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{ 0xff, 0xe0 } /* jmp *%rax */
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};
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static inline void init_thunk( struct thunk *thunk, unsigned int index )
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{
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*thunk = thunk_template;
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thunk->index = index;
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thunk->call_stubless = call_stubless_func;
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}
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#elif defined(__arm__)
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extern void call_stubless_func(void);
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__ASM_GLOBAL_FUNC(call_stubless_func,
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"push {r0-r3}\n\t"
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"mov r2, sp\n\t" /* stack_top */
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"push {fp,lr}\n\t"
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"mov fp, sp\n\t"
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"ldr r0, [r0]\n\t" /* This->lpVtbl */
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"ldr r0, [r0,#-8]\n\t" /* MIDL_STUBLESS_PROXY_INFO */
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"ldr r1, [r0,#8]\n\t" /* info->FormatStringOffset */
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"ldrh r1, [r1,ip]\n\t" /* info->FormatStringOffset[index] */
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"ldr ip, [r0,#4]\n\t" /* info->ProcFormatString */
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"add r1, ip\n\t" /* info->ProcFormatString + offset */
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"ldr r0, [r0]\n\t" /* info->pStubDesc */
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#ifdef __SOFTFP__
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"mov r3, #0\n\t"
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#else
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"vpush {s0-s15}\n\t" /* store the s0-s15/d0-d7 arguments */
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"mov r3, sp\n\t" /* fpu_stack */
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#endif
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"bl " __ASM_NAME("ndr_client_call") "\n\t"
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"mov sp, fp\n\t"
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"pop {fp,lr}\n\t"
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"add sp, #16\n\t"
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"bx lr" );
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struct thunk
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{
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DWORD ldr_ip; /* ldr ip,[pc] */
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DWORD ldr_pc; /* ldr pc,[pc] */
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DWORD index;
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void *func;
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};
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static inline void init_thunk( struct thunk *thunk, unsigned int index )
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{
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thunk->ldr_ip = 0xe59fc000; /* ldr ip,[pc] */
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thunk->ldr_pc = 0xe59ff000; /* ldr pc,[pc] */
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thunk->index = index * sizeof(unsigned short);
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thunk->func = call_stubless_func;
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}
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#else /* __i386__ */
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#warning You must implement stubless proxies for your CPU
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struct thunk
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{
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DWORD index;
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};
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static inline void init_thunk( struct thunk *thunk, unsigned int index )
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{
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thunk->index = index;
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}
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#endif /* __i386__ */
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#define BLOCK_SIZE 1024
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#define MAX_BLOCKS 64 /* 64k methods should be enough for anybody */
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static const struct thunk *method_blocks[MAX_BLOCKS];
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static const struct thunk *allocate_block( unsigned int num )
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{
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unsigned int i;
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struct thunk *prev, *block;
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DWORD oldprot;
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block = VirtualAlloc( NULL, BLOCK_SIZE * sizeof(*block),
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MEM_COMMIT | MEM_RESERVE, PAGE_EXECUTE_READWRITE );
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if (!block) return NULL;
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for (i = 0; i < BLOCK_SIZE; i++) init_thunk( &block[i], BLOCK_SIZE * num + i + 3 );
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VirtualProtect( block, BLOCK_SIZE * sizeof(*block), PAGE_EXECUTE_READ, &oldprot );
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prev = InterlockedCompareExchangePointer( (void **)&method_blocks[num], block, NULL );
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if (prev) /* someone beat us to it */
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{
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VirtualFree( block, 0, MEM_RELEASE );
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block = prev;
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}
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return block;
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}
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BOOL fill_stubless_table( IUnknownVtbl *vtbl, DWORD num )
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{
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const void **entry = (const void **)(vtbl + 1);
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DWORD i, j;
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if (num - 3 > BLOCK_SIZE * MAX_BLOCKS)
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{
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FIXME( "%u methods not supported\n", num );
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return FALSE;
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}
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for (i = 0; i < (num - 3 + BLOCK_SIZE - 1) / BLOCK_SIZE; i++)
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{
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const struct thunk *block = method_blocks[i];
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if (!block && !(block = allocate_block( i ))) return FALSE;
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for (j = 0; j < BLOCK_SIZE && j < num - 3 - i * BLOCK_SIZE; j++, entry++)
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if (*entry == (LPVOID)-1) *entry = &block[j];
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}
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return TRUE;
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}
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HRESULT StdProxy_Construct(REFIID riid,
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LPUNKNOWN pUnkOuter,
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const ProxyFileInfo *ProxyInfo,
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int Index,
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LPPSFACTORYBUFFER pPSFactory,
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LPRPCPROXYBUFFER *ppProxy,
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LPVOID *ppvObj)
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{
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StdProxyImpl *This;
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PCInterfaceName name = ProxyInfo->pNamesArray[Index];
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CInterfaceProxyVtbl *vtbl = ProxyInfo->pProxyVtblList[Index];
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TRACE("(%p,%p,%p,%p,%p) %s\n", pUnkOuter, vtbl, pPSFactory, ppProxy, ppvObj, name);
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/* TableVersion = 2 means it is the stubless version of CInterfaceProxyVtbl */
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if (ProxyInfo->TableVersion > 1) {
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ULONG count = ProxyInfo->pStubVtblList[Index]->header.DispatchTableCount;
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vtbl = (CInterfaceProxyVtbl *)((const void **)vtbl + 1);
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TRACE("stubless vtbl %p: count=%d\n", vtbl->Vtbl, count );
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fill_stubless_table( (IUnknownVtbl *)vtbl->Vtbl, count );
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}
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if (!IsEqualGUID(vtbl->header.piid, riid)) {
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ERR("IID mismatch during proxy creation\n");
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return RPC_E_UNEXPECTED;
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}
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This = HeapAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,sizeof(StdProxyImpl));
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if (!This) return E_OUTOFMEMORY;
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if (!pUnkOuter) pUnkOuter = (IUnknown *)This;
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This->IRpcProxyBuffer_iface.lpVtbl = &StdProxy_Vtbl;
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This->PVtbl = vtbl->Vtbl;
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/* one reference for the proxy */
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This->RefCount = 1;
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This->piid = vtbl->header.piid;
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This->base_object = NULL;
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This->base_proxy = NULL;
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This->pUnkOuter = pUnkOuter;
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This->name = name;
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This->pPSFactory = pPSFactory;
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This->pChannel = NULL;
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if(ProxyInfo->pDelegatedIIDs && ProxyInfo->pDelegatedIIDs[Index])
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{
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HRESULT r = create_proxy( ProxyInfo->pDelegatedIIDs[Index], NULL,
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&This->base_proxy, (void **)&This->base_object );
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if (FAILED(r))
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{
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HeapFree( GetProcessHeap(), 0, This );
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return r;
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}
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}
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*ppProxy = &This->IRpcProxyBuffer_iface;
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*ppvObj = &This->PVtbl;
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IUnknown_AddRef((IUnknown *)*ppvObj);
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IPSFactoryBuffer_AddRef(pPSFactory);
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TRACE( "iid=%s this %p proxy %p obj %p vtbl %p base proxy %p base obj %p\n",
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debugstr_guid(riid), This, *ppProxy, *ppvObj, This->PVtbl, This->base_proxy, This->base_object );
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return S_OK;
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}
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HRESULT WINAPI StdProxy_QueryInterface(IRpcProxyBuffer *iface, REFIID riid, void **obj)
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{
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StdProxyImpl *This = impl_from_IRpcProxyBuffer(iface);
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TRACE("(%p)->QueryInterface(%s,%p)\n",This,debugstr_guid(riid),obj);
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if (IsEqualGUID(&IID_IUnknown,riid) ||
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IsEqualGUID(This->piid,riid)) {
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*obj = &This->PVtbl;
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InterlockedIncrement(&This->RefCount);
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return S_OK;
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}
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if (IsEqualGUID(&IID_IRpcProxyBuffer,riid)) {
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*obj = &This->IRpcProxyBuffer_iface;
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InterlockedIncrement(&This->RefCount);
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return S_OK;
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}
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return E_NOINTERFACE;
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}
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ULONG WINAPI StdProxy_AddRef(IRpcProxyBuffer *iface)
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{
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StdProxyImpl *This = impl_from_IRpcProxyBuffer(iface);
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TRACE("(%p)->AddRef()\n",This);
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return InterlockedIncrement(&This->RefCount);
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}
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static ULONG WINAPI StdProxy_Release(LPRPCPROXYBUFFER iface)
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{
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ULONG refs;
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StdProxyImpl *This = impl_from_IRpcProxyBuffer(iface);
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TRACE("(%p)->Release()\n",This);
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refs = InterlockedDecrement(&This->RefCount);
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if (!refs)
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{
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if (This->pChannel)
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IRpcProxyBuffer_Disconnect(&This->IRpcProxyBuffer_iface);
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if (This->base_object) IUnknown_Release( This->base_object );
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if (This->base_proxy) IRpcProxyBuffer_Release( This->base_proxy );
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IPSFactoryBuffer_Release(This->pPSFactory);
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HeapFree(GetProcessHeap(),0,This);
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}
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return refs;
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}
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HRESULT WINAPI StdProxy_Connect(IRpcProxyBuffer *iface, IRpcChannelBuffer *pChannel)
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{
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StdProxyImpl *This = impl_from_IRpcProxyBuffer(iface);
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TRACE("(%p)->Connect(%p)\n",This,pChannel);
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This->pChannel = pChannel;
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IRpcChannelBuffer_AddRef(pChannel);
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if (This->base_proxy) IRpcProxyBuffer_Connect( This->base_proxy, pChannel );
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return S_OK;
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}
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void WINAPI StdProxy_Disconnect(IRpcProxyBuffer *iface)
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{
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StdProxyImpl *This = impl_from_IRpcProxyBuffer(iface);
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TRACE("(%p)->Disconnect()\n",This);
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if (This->base_proxy) IRpcProxyBuffer_Disconnect( This->base_proxy );
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IRpcChannelBuffer_Release(This->pChannel);
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This->pChannel = NULL;
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}
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static const IRpcProxyBufferVtbl StdProxy_Vtbl =
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{
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StdProxy_QueryInterface,
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StdProxy_AddRef,
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StdProxy_Release,
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StdProxy_Connect,
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StdProxy_Disconnect
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};
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static void StdProxy_GetChannel(LPVOID iface,
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LPRPCCHANNELBUFFER *ppChannel)
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{
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StdProxyImpl *This = impl_from_proxy_obj( iface );
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TRACE("(%p)->GetChannel(%p) %s\n",This,ppChannel,This->name);
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*ppChannel = This->pChannel;
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}
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static void StdProxy_GetIID(LPVOID iface,
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const IID **ppiid)
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{
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StdProxyImpl *This = impl_from_proxy_obj( iface );
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TRACE("(%p)->GetIID(%p) %s\n",This,ppiid,This->name);
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*ppiid = This->piid;
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}
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HRESULT WINAPI IUnknown_QueryInterface_Proxy(LPUNKNOWN iface,
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REFIID riid,
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LPVOID *ppvObj)
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{
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StdProxyImpl *This = impl_from_proxy_obj( iface );
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TRACE("(%p)->QueryInterface(%s,%p) %s\n",This,debugstr_guid(riid),ppvObj,This->name);
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return IUnknown_QueryInterface(This->pUnkOuter,riid,ppvObj);
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}
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ULONG WINAPI IUnknown_AddRef_Proxy(LPUNKNOWN iface)
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{
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StdProxyImpl *This = impl_from_proxy_obj( iface );
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TRACE("(%p)->AddRef() %s\n",This,This->name);
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return IUnknown_AddRef(This->pUnkOuter);
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}
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ULONG WINAPI IUnknown_Release_Proxy(LPUNKNOWN iface)
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{
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StdProxyImpl *This = impl_from_proxy_obj( iface );
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TRACE("(%p)->Release() %s\n",This,This->name);
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return IUnknown_Release(This->pUnkOuter);
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}
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/***********************************************************************
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* NdrProxyInitialize [RPCRT4.@]
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*/
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void WINAPI NdrProxyInitialize(void *This,
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PRPC_MESSAGE pRpcMsg,
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PMIDL_STUB_MESSAGE pStubMsg,
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PMIDL_STUB_DESC pStubDescriptor,
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unsigned int ProcNum)
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{
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TRACE("(%p,%p,%p,%p,%d)\n", This, pRpcMsg, pStubMsg, pStubDescriptor, ProcNum);
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NdrClientInitializeNew(pRpcMsg, pStubMsg, pStubDescriptor, ProcNum);
|
|
StdProxy_GetChannel(This, &pStubMsg->pRpcChannelBuffer);
|
|
if (!pStubMsg->pRpcChannelBuffer)
|
|
RpcRaiseException(CO_E_OBJNOTCONNECTED);
|
|
IRpcChannelBuffer_GetDestCtx(pStubMsg->pRpcChannelBuffer,
|
|
&pStubMsg->dwDestContext,
|
|
&pStubMsg->pvDestContext);
|
|
TRACE("channel=%p\n", pStubMsg->pRpcChannelBuffer);
|
|
}
|
|
|
|
/***********************************************************************
|
|
* NdrProxyGetBuffer [RPCRT4.@]
|
|
*/
|
|
void WINAPI NdrProxyGetBuffer(void *This,
|
|
PMIDL_STUB_MESSAGE pStubMsg)
|
|
{
|
|
HRESULT hr;
|
|
const IID *riid = NULL;
|
|
|
|
TRACE("(%p,%p)\n", This, pStubMsg);
|
|
pStubMsg->RpcMsg->BufferLength = pStubMsg->BufferLength;
|
|
pStubMsg->dwStubPhase = PROXY_GETBUFFER;
|
|
StdProxy_GetIID(This, &riid);
|
|
hr = IRpcChannelBuffer_GetBuffer(pStubMsg->pRpcChannelBuffer,
|
|
(RPCOLEMESSAGE*)pStubMsg->RpcMsg,
|
|
riid);
|
|
if (FAILED(hr))
|
|
{
|
|
RpcRaiseException(hr);
|
|
return;
|
|
}
|
|
pStubMsg->fBufferValid = TRUE;
|
|
pStubMsg->BufferStart = pStubMsg->RpcMsg->Buffer;
|
|
pStubMsg->BufferEnd = pStubMsg->BufferStart + pStubMsg->BufferLength;
|
|
pStubMsg->Buffer = pStubMsg->BufferStart;
|
|
pStubMsg->dwStubPhase = PROXY_MARSHAL;
|
|
}
|
|
|
|
/***********************************************************************
|
|
* NdrProxySendReceive [RPCRT4.@]
|
|
*/
|
|
void WINAPI NdrProxySendReceive(void *This,
|
|
PMIDL_STUB_MESSAGE pStubMsg)
|
|
{
|
|
ULONG Status = 0;
|
|
HRESULT hr;
|
|
|
|
TRACE("(%p,%p)\n", This, pStubMsg);
|
|
|
|
if (!pStubMsg->pRpcChannelBuffer)
|
|
{
|
|
WARN("Trying to use disconnected proxy %p\n", This);
|
|
RpcRaiseException(RPC_E_DISCONNECTED);
|
|
}
|
|
|
|
pStubMsg->dwStubPhase = PROXY_SENDRECEIVE;
|
|
/* avoid sending uninitialised parts of the buffer on the wire */
|
|
pStubMsg->RpcMsg->BufferLength = pStubMsg->Buffer - (unsigned char *)pStubMsg->RpcMsg->Buffer;
|
|
hr = IRpcChannelBuffer_SendReceive(pStubMsg->pRpcChannelBuffer,
|
|
(RPCOLEMESSAGE*)pStubMsg->RpcMsg,
|
|
&Status);
|
|
pStubMsg->dwStubPhase = PROXY_UNMARSHAL;
|
|
pStubMsg->BufferLength = pStubMsg->RpcMsg->BufferLength;
|
|
pStubMsg->BufferStart = pStubMsg->RpcMsg->Buffer;
|
|
pStubMsg->BufferEnd = pStubMsg->BufferStart + pStubMsg->BufferLength;
|
|
pStubMsg->Buffer = pStubMsg->BufferStart;
|
|
|
|
/* raise exception if call failed */
|
|
if (hr == RPC_S_CALL_FAILED) RpcRaiseException(*(DWORD*)pStubMsg->Buffer);
|
|
else if (FAILED(hr)) RpcRaiseException(hr);
|
|
}
|
|
|
|
/***********************************************************************
|
|
* NdrProxyFreeBuffer [RPCRT4.@]
|
|
*/
|
|
void WINAPI NdrProxyFreeBuffer(void *This,
|
|
PMIDL_STUB_MESSAGE pStubMsg)
|
|
{
|
|
TRACE("(%p,%p)\n", This, pStubMsg);
|
|
|
|
if (pStubMsg->fBufferValid)
|
|
{
|
|
IRpcChannelBuffer_FreeBuffer(pStubMsg->pRpcChannelBuffer,
|
|
(RPCOLEMESSAGE*)pStubMsg->RpcMsg);
|
|
pStubMsg->fBufferValid = TRUE;
|
|
}
|
|
}
|
|
|
|
/***********************************************************************
|
|
* NdrProxyErrorHandler [RPCRT4.@]
|
|
*/
|
|
HRESULT WINAPI NdrProxyErrorHandler(DWORD dwExceptionCode)
|
|
{
|
|
WARN("(0x%08x): a proxy call failed\n", dwExceptionCode);
|
|
|
|
if (FAILED(dwExceptionCode))
|
|
return dwExceptionCode;
|
|
else
|
|
return HRESULT_FROM_WIN32(dwExceptionCode);
|
|
}
|