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Moved 32-bit relay and snoop support to dlls/ntdll.

This commit is contained in:
Alexandre Julliard 2003-09-19 04:32:39 +00:00
parent 97ad311e71
commit a37e7608c7
8 changed files with 449 additions and 510 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
dlls/kernel/ne_module.c
View File

@ -44,7 +44,6 @@
#include "global.h"
#include "file.h"
#include "task.h"
#include "snoop.h"
#include "builtin16.h"
#include "stackframe.h"
#include "excpt.h"
@ -93,6 +92,8 @@ typedef struct
static const BUILTIN16_DESCRIPTOR *builtin_dlls[MAX_DLLS];
extern void SNOOP16_RegisterDLL(NE_MODULE*,LPCSTR);
extern FARPROC16 SNOOP16_GetProcAddress16(HMODULE16,DWORD,FARPROC16);
static HINSTANCE16 NE_LoadModule( LPCSTR name, BOOL lib_only );
static BOOL16 NE_FreeModule( HMODULE16 hModule, BOOL call_wep );

4
dlls/kernel/snoop16.c
View File

@ -31,10 +31,10 @@
#include "wine/winbase16.h"
#include "wine/library.h"
#include "global.h"
#include "module.h"
#include "stackframe.h"
#include "builtin16.h"
#include "toolhelp.h"
#include "snoop.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(snoop);
@ -43,6 +43,8 @@ WINE_DEFAULT_DEBUG_CHANNEL(snoop);
#include "pshpack1.h"
extern int SNOOP_ShowDebugmsgSnoop(const char *dll,int ord,const char *fname); /* FIXME */
void WINAPI SNOOP16_Entry(FARPROC proc, LPBYTE args, CONTEXT86 *context);
void WINAPI SNOOP16_Return(FARPROC proc, LPBYTE args, CONTEXT86 *context);

4
dlls/ntdll/Makefile.in
View File

@ -27,8 +27,6 @@ C_SRCS = \
$(TOPOBJDIR)/misc/registry.c \
$(TOPOBJDIR)/misc/version.c \
$(TOPOBJDIR)/msdos/dpmi.c \
$(TOPOBJDIR)/relay32/relay386.c \
$(TOPOBJDIR)/relay32/snoop.c \
$(TOPOBJDIR)/scheduler/handle.c \
$(TOPOBJDIR)/scheduler/process.c \
$(TOPOBJDIR)/scheduler/pthread.c \
@ -51,6 +49,7 @@ C_SRCS = \
path.c \
process.c \
reg.c \
relay.c \
resource.c \
rtl.c \
rtlbitmap.c \
@ -81,7 +80,6 @@ EXTRASUBDIRS = \
$(TOPOBJDIR)/memory \
$(TOPOBJDIR)/misc \
$(TOPOBJDIR)/msdos \
$(TOPOBJDIR)/relay32 \
$(TOPOBJDIR)/scheduler \
$(TOPOBJDIR)/win32

2
dlls/ntdll/ntdll_misc.h
View File

@ -44,7 +44,7 @@ extern FARPROC RELAY_GetProcAddress( HMODULE module, IMAGE_EXPORT_DIRECTORY *exp
DWORD exp_size, FARPROC proc, const char *user );
extern FARPROC SNOOP_GetProcAddress( HMODULE hmod, IMAGE_EXPORT_DIRECTORY *exports, DWORD exp_size,
FARPROC origfun, DWORD ordinal );
extern void RELAY_SetupDLL( const char *module );
extern void RELAY_SetupDLL( HMODULE hmod );
extern void SNOOP_SetupDLL( HMODULE hmod );
static inline HANDLE ntdll_get_process_heap(void)

466
relay32/relay386.c → dlls/ntdll/relay.c
View File

@ -1,7 +1,8 @@
/*
* 386-specific Win32 relay functions
* Win32 relay and snoop functions
*
* Copyright 1997 Alexandre Julliard
* Copyright 1998 Marcus Meissner
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
@ -30,12 +31,15 @@
#include "winbase.h"
#include "winreg.h"
#include "winternl.h"
#include "excpt.h"
#include "wine/exception.h"
#include "ntdll_misc.h"
#include "wine/unicode.h"
#include "wine/debug.h"
#include "ntdll_misc.h"
WINE_DEFAULT_DEBUG_CHANNEL(relay);
WINE_DECLARE_DEBUG_CHANNEL(snoop);
WINE_DECLARE_DEBUG_CHANNEL(seh);
const char **debug_relay_excludelist = NULL;
const char **debug_relay_includelist = NULL;
@ -170,16 +174,77 @@ void RELAY_InitDebugLists(void)
#ifdef __i386__
#include "pshpack1.h"
typedef struct
{
BYTE call; /* 0xe8 call callfrom32 (relative) */
DWORD callfrom32 WINE_PACKED; /* RELAY_CallFrom32 relative addr */
BYTE ret; /* 0xc2 ret $n or 0xc3 ret */
WORD args; /* nb of args to remove from the stack */
void *orig; /* original entry point */
DWORD argtypes; /* argument types */
BYTE call; /* 0xe8 call callfrom32 (relative) */
DWORD callfrom32; /* RELAY_CallFrom32 relative addr */
BYTE ret; /* 0xc2 ret $n or 0xc3 ret */
WORD args; /* nb of args to remove from the stack */
void *orig; /* original entry point */
DWORD argtypes; /* argument types */
} DEBUG_ENTRY_POINT;
typedef struct
{
/* code part */
BYTE lcall; /* 0xe8 call snoopentry (relative) */
/* NOTE: If you move snoopentry OR nrofargs fix the relative offset
* calculation!
*/
DWORD snoopentry; /* SNOOP_Entry relative */
/* unreached */
int nrofargs;
FARPROC origfun;
const char *name;
} SNOOP_FUN;
typedef struct tagSNOOP_DLL {
HMODULE hmod;
SNOOP_FUN *funs;
DWORD ordbase;
DWORD nrofordinals;
struct tagSNOOP_DLL *next;
char name[1];
} SNOOP_DLL;
typedef struct
{
/* code part */
BYTE lcall; /* 0xe8 call snoopret relative*/
/* NOTE: If you move snoopret OR origreturn fix the relative offset
* calculation!
*/
DWORD snoopret; /* SNOOP_Ret relative */
/* unreached */
FARPROC origreturn;
SNOOP_DLL *dll;
DWORD ordinal;
DWORD origESP;
DWORD *args; /* saved args across a stdcall */
} SNOOP_RETURNENTRY;
typedef struct tagSNOOP_RETURNENTRIES {
SNOOP_RETURNENTRY entry[4092/sizeof(SNOOP_RETURNENTRY)];
struct tagSNOOP_RETURNENTRIES *next;
} SNOOP_RETURNENTRIES;
#include "poppack.h"
extern void WINAPI SNOOP_Entry();
extern void WINAPI SNOOP_Return();
static SNOOP_DLL *firstdll;
static SNOOP_RETURNENTRIES *firstrets;
static WINE_EXCEPTION_FILTER(page_fault)
{
if (GetExceptionCode() == EXCEPTION_ACCESS_VIOLATION ||
GetExceptionCode() == EXCEPTION_PRIV_INSTRUCTION)
return EXCEPTION_EXECUTE_HANDLER;
return EXCEPTION_CONTINUE_SEARCH;
}
/***********************************************************************
* check_relay_include
@ -259,17 +324,17 @@ static BOOL check_relay_from_module( const char *module )
*
* Find the name of an exported function.
*/
static const char *find_exported_name( const char *module,
static const char *find_exported_name( HMODULE module,
IMAGE_EXPORT_DIRECTORY *exp, int ordinal )
{
int i;
const char *ret = NULL;
WORD *ordptr = (WORD *)(module + exp->AddressOfNameOrdinals);
WORD *ordptr = (WORD *)((char *)module + exp->AddressOfNameOrdinals);
for (i = 0; i < exp->NumberOfNames; i++, ordptr++)
if (*ordptr + exp->Base == ordinal) break;
if (i < exp->NumberOfNames)
ret = module + ((DWORD*)(module + exp->AddressOfNames))[i];
ret = (char *)module + ((DWORD*)((char *)module + exp->AddressOfNames))[i];
return ret;
}
@ -283,7 +348,7 @@ static void get_entry_point( char *buffer, DEBUG_ENTRY_POINT *relay )
{
IMAGE_EXPORT_DIRECTORY *exp = NULL;
DEBUG_ENTRY_POINT *debug;
char *p, *base = NULL;
char *p;
const char *name;
int ordinal = 0;
PLIST_ENTRY mark, entry;
@ -309,12 +374,11 @@ static void get_entry_point( char *buffer, DEBUG_ENTRY_POINT *relay )
/* Now find the function */
base = (char *)mod->BaseAddress;
strcpy( buffer, base + exp->Name );
strcpy( buffer, (char *)mod->BaseAddress + exp->Name );
p = buffer + strlen(buffer);
if (p > buffer + 4 && !strcasecmp( p - 4, ".dll" )) p -= 4;
if ((name = find_exported_name( base, exp, ordinal + exp->Base )))
if ((name = find_exported_name( mod->BaseAddress, exp, ordinal + exp->Base )))
sprintf( p, ".%s", name );
else
sprintf( p, ".%ld", ordinal + exp->Base );
@ -331,9 +395,9 @@ static inline void RELAY_PrintArgs( int *args, int nb_args, unsigned int typemas
if ((typemask & 3) && HIWORD(*args))
{
if (typemask & 2)
DPRINTF( "%08x %s", *args, debugstr_w((LPWSTR)*args) );
DPRINTF( "%08x %s", *args, debugstr_w((LPWSTR)*args) );
else
DPRINTF( "%08x %s", *args, debugstr_a((LPCSTR)*args) );
DPRINTF( "%08x %s", *args, debugstr_a((LPCSTR)*args) );
}
else DPRINTF( "%08x", *args );
if (nb_args) DPRINTF( "," );
@ -631,7 +695,7 @@ FARPROC RELAY_GetProcAddress( HMODULE module, IMAGE_EXPORT_DIRECTORY *exports,
*
* Setup relay debugging for a built-in dll.
*/
void RELAY_SetupDLL( const char *module )
void RELAY_SetupDLL( HMODULE module )
{
IMAGE_EXPORT_DIRECTORY *exports;
DEBUG_ENTRY_POINT *debug;
@ -641,12 +705,11 @@ void RELAY_SetupDLL( const char *module )
char *p, dllname[80];
DWORD size;
exports = RtlImageDirectoryEntryToData( (HMODULE)module, TRUE,
IMAGE_DIRECTORY_ENTRY_EXPORT, &size );
exports = RtlImageDirectoryEntryToData( module, TRUE, IMAGE_DIRECTORY_ENTRY_EXPORT, &size );
if (!exports) return;
debug = (DEBUG_ENTRY_POINT *)((char *)exports + size);
funcs = (DWORD *)(module + exports->AddressOfFunctions);
strcpy( dllname, module + exports->Name );
funcs = (DWORD *)((char *)module + exports->AddressOfFunctions);
strcpy( dllname, (char *)module + exports->Name );
p = dllname + strlen(dllname) - 4;
if (p > dllname && !strcasecmp( p, ".dll" )) *p = 0;
@ -674,11 +737,355 @@ void RELAY_SetupDLL( const char *module )
debug->callfrom32 = (char *)debug->orig - (char *)&debug->ret;
}
debug->orig = (FARPROC)(module + (DWORD)*funcs);
*funcs = (char *)debug - module;
debug->orig = (FARPROC)((char *)module + (DWORD)*funcs);
*funcs = (char *)debug - (char *)module;
}
}
/***********************************************************************
* SNOOP_ShowDebugmsgSnoop
*
* Simple function to decide if a particular debugging message is
* wanted.
*/
int SNOOP_ShowDebugmsgSnoop(const char *dll, int ord, const char *fname) {
if(debug_snoop_excludelist || debug_snoop_includelist) {
const char **listitem;
char buf[80];
int len, len2, itemlen, show;
if(debug_snoop_excludelist) {
show = 1;
listitem = debug_snoop_excludelist;
} else {
show = 0;
listitem = debug_snoop_includelist;
}
len = strlen(dll);
assert(len < 64);
sprintf(buf, "%s.%d", dll, ord);
len2 = strlen(buf);
for(; *listitem; listitem++) {
itemlen = strlen(*listitem);
if((itemlen == len && !strncasecmp(*listitem, buf, len)) ||
(itemlen == len2 && !strncasecmp(*listitem, buf, len2)) ||
!strcasecmp(*listitem, fname)) {
show = !show;
break;
}
}
return show;
}
return 1;
}
/***********************************************************************
* SNOOP_SetupDLL
*
* Setup snoop debugging for a native dll.
*/
void SNOOP_SetupDLL(HMODULE hmod)
{
SNOOP_DLL **dll = &firstdll;
char *p, *name;
void *addr;
SIZE_T size;
IMAGE_EXPORT_DIRECTORY *exports;
exports = RtlImageDirectoryEntryToData( hmod, TRUE, IMAGE_DIRECTORY_ENTRY_EXPORT, &size );
if (!exports) return;
name = (char *)hmod + exports->Name;
TRACE("hmod=%p, name=%s\n", hmod, name);
while (*dll) {
if ((*dll)->hmod == hmod)
{
/* another dll, loaded at the same address */
addr = (*dll)->funs;
size = (*dll)->nrofordinals * sizeof(SNOOP_FUN);
NtFreeVirtualMemory(GetCurrentProcess(), &addr, &size, MEM_RELEASE);
break;
}
dll = &((*dll)->next);
}
*dll = RtlReAllocateHeap(ntdll_get_process_heap(),
HEAP_ZERO_MEMORY, *dll,
sizeof(SNOOP_DLL) + strlen(name));
(*dll)->hmod = hmod;
(*dll)->ordbase = exports->Base;
(*dll)->nrofordinals = exports->NumberOfFunctions;
strcpy( (*dll)->name, name );
p = (*dll)->name + strlen((*dll)->name) - 4;
if (p > (*dll)->name && !strcasecmp( p, ".dll" )) *p = 0;
size = exports->NumberOfFunctions * sizeof(SNOOP_FUN);
NtAllocateVirtualMemory(GetCurrentProcess(), &addr, NULL, &size,
MEM_COMMIT | MEM_RESERVE, PAGE_EXECUTE_READWRITE);
if (!addr) {
RtlFreeHeap(ntdll_get_process_heap(),0,*dll);
FIXME("out of memory\n");
return;
}
(*dll)->funs = addr;
memset((*dll)->funs,0,size);
}
/***********************************************************************
* SNOOP_GetProcAddress
*
* Return the proc address to use for a given function.
*/
FARPROC SNOOP_GetProcAddress( HMODULE hmod, IMAGE_EXPORT_DIRECTORY *exports,
DWORD exp_size, FARPROC origfun, DWORD ordinal )
{
int i;
const char *ename;
WORD *ordinals;
DWORD *names;
SNOOP_DLL *dll = firstdll;
SNOOP_FUN *fun;
IMAGE_SECTION_HEADER *sec;
if (!TRACE_ON(snoop)) return origfun;
if (!*(LPBYTE)origfun) /* 0x00 is an imposs. opcode, poss. dataref. */
return origfun;
sec = RtlImageRvaToSection( RtlImageNtHeader(hmod), hmod, (char *)origfun - (char *)hmod );
if (!sec || !(sec->Characteristics & IMAGE_SCN_CNT_CODE))
return origfun; /* most likely a data reference */
while (dll) {
if (hmod == dll->hmod)
break;
dll=dll->next;
}
if (!dll) /* probably internal */
return origfun;
/* try to find a name for it */
ename = NULL;
names = (DWORD *)((char *)hmod + exports->AddressOfNames);
ordinals = (WORD *)((char *)hmod + exports->AddressOfNameOrdinals);
if (names) for (i = 0; i < exports->NumberOfNames; i++)
{
if (ordinals[i] == ordinal)
{
ename = (char *)hmod + names[i];
break;
}
}
if (!SNOOP_ShowDebugmsgSnoop(dll->name,ordinal,ename))
return origfun;
assert(ordinal < dll->nrofordinals);
fun = dll->funs+ordinal;
if (!fun->name)
{
fun->name = ename;
fun->lcall = 0xe8;
/* NOTE: origreturn struct member MUST come directly after snoopentry */
fun->snoopentry = (char*)SNOOP_Entry-((char*)(&fun->nrofargs));
fun->origfun = origfun;
fun->nrofargs = -1;
}
return (FARPROC)&(fun->lcall);
}
static void SNOOP_PrintArg(DWORD x)
{
int i,nostring;
DPRINTF("%08lx",x);
if (!HIWORD(x) || TRACE_ON(seh)) return; /* trivial reject to avoid faults */
__TRY
{
LPBYTE s=(LPBYTE)x;
i=0;nostring=0;
while (i<80) {
if (s[i]==0) break;
if (s[i]<0x20) {nostring=1;break;}
if (s[i]>=0x80) {nostring=1;break;}
i++;
}
if (!nostring && i > 5)
DPRINTF(" %s",debugstr_an((LPSTR)x,i));
else /* try unicode */
{
LPWSTR s=(LPWSTR)x;
i=0;nostring=0;
while (i<80) {
if (s[i]==0) break;
if (s[i]<0x20) {nostring=1;break;}
if (s[i]>0x100) {nostring=1;break;}
i++;
}
if (!nostring && i > 5) DPRINTF(" %s",debugstr_wn((LPWSTR)x,i));
}
}
__EXCEPT(page_fault)
{
}
__ENDTRY
}
#define CALLER1REF (*(DWORD*)context->Esp)
void WINAPI SNOOP_DoEntry( CONTEXT86 *context )
{
DWORD ordinal=0,entry = context->Eip - 5;
SNOOP_DLL *dll = firstdll;
SNOOP_FUN *fun = NULL;
SNOOP_RETURNENTRIES **rets = &firstrets;
SNOOP_RETURNENTRY *ret;
int i=0, max;
while (dll) {
if ( ((char*)entry>=(char*)dll->funs) &&
((char*)entry<=(char*)(dll->funs+dll->nrofordinals))
) {
fun = (SNOOP_FUN*)entry;
ordinal = fun-dll->funs;
break;
}
dll=dll->next;
}
if (!dll) {
FIXME("entrypoint 0x%08lx not found\n",entry);
return; /* oops */
}
/* guess cdecl ... */
if (fun->nrofargs<0) {
/* Typical cdecl return frame is:
* add esp, xxxxxxxx
* which has (for xxxxxxxx up to 255 the opcode "83 C4 xx".
* (after that 81 C2 xx xx xx xx)
*/
LPBYTE reteip = (LPBYTE)CALLER1REF;
if (reteip) {
if ((reteip[0]==0x83)&&(reteip[1]==0xc4))
fun->nrofargs=reteip[2]/4;
}
}
while (*rets) {
for (i=0;i<sizeof((*rets)->entry)/sizeof((*rets)->entry[0]);i++)
if (!(*rets)->entry[i].origreturn)
break;
if (i!=sizeof((*rets)->entry)/sizeof((*rets)->entry[0]))
break;
rets = &((*rets)->next);
}
if (!*rets) {
SIZE_T size = 4096;
VOID* addr;
NtAllocateVirtualMemory(GetCurrentProcess(), &addr, NULL, &size,
MEM_COMMIT | MEM_RESERVE,
PAGE_EXECUTE_READWRITE);
if (!addr) return;
*rets = addr;
memset(*rets,0,4096);
i = 0; /* entry 0 is free */
}
ret = &((*rets)->entry[i]);
ret->lcall = 0xe8;
/* NOTE: origreturn struct member MUST come directly after snoopret */
ret->snoopret = ((char*)SNOOP_Return)-(char*)(&ret->origreturn);
ret->origreturn = (FARPROC)CALLER1REF;
CALLER1REF = (DWORD)&ret->lcall;
ret->dll = dll;
ret->args = NULL;
ret->ordinal = ordinal;
ret->origESP = context->Esp;
context->Eip = (DWORD)fun->origfun;
if (fun->name) DPRINTF("%04lx:CALL %s.%s(",GetCurrentThreadId(),dll->name,fun->name);
else DPRINTF("%04lx:CALL %s.%ld(",GetCurrentThreadId(),dll->name,dll->ordbase+ordinal);
if (fun->nrofargs>0) {
max = fun->nrofargs; if (max>16) max=16;
for (i=0;i<max;i++)
{
SNOOP_PrintArg(*(DWORD*)(context->Esp + 4 + sizeof(DWORD)*i));
if (i<fun->nrofargs-1) DPRINTF(",");
}
if (max!=fun->nrofargs)
DPRINTF(" ...");
} else if (fun->nrofargs<0) {
DPRINTF("<unknown, check return>");
ret->args = RtlAllocateHeap(ntdll_get_process_heap(),
0,16*sizeof(DWORD));
memcpy(ret->args,(LPBYTE)(context->Esp + 4),sizeof(DWORD)*16);
}
DPRINTF(") ret=%08lx\n",(DWORD)ret->origreturn);
}
void WINAPI SNOOP_DoReturn( CONTEXT86 *context )
{
SNOOP_RETURNENTRY *ret = (SNOOP_RETURNENTRY*)(context->Eip - 5);
SNOOP_FUN *fun = &ret->dll->funs[ret->ordinal];
/* We haven't found out the nrofargs yet. If we called a cdecl
* function it is too late anyway and we can just set '0' (which
* will be the difference between orig and current ESP
* If stdcall -> everything ok.
*/
if (ret->dll->funs[ret->ordinal].nrofargs<0)
ret->dll->funs[ret->ordinal].nrofargs=(context->Esp - ret->origESP-4)/4;
context->Eip = (DWORD)ret->origreturn;
if (ret->args) {
int i,max;
if (fun->name)
DPRINTF("%04lx:RET %s.%s(", GetCurrentThreadId(), ret->dll->name, fun->name);
else
DPRINTF("%04lx:RET %s.%ld(", GetCurrentThreadId(),
ret->dll->name,ret->dll->ordbase+ret->ordinal);
max = fun->nrofargs;
if (max>16) max=16;
for (i=0;i<max;i++)
{
SNOOP_PrintArg(ret->args[i]);
if (i<max-1) DPRINTF(",");
}
DPRINTF(") retval=%08lx ret=%08lx\n",
context->Eax,(DWORD)ret->origreturn );
RtlFreeHeap(ntdll_get_process_heap(),0,ret->args);
ret->args = NULL;
}
else
{
if (fun->name)
DPRINTF("%04lx:RET %s.%s() retval=%08lx ret=%08lx\n",
GetCurrentThreadId(),
ret->dll->name, fun->name, context->Eax, (DWORD)ret->origreturn);
else
DPRINTF("%04lx:RET %s.%ld() retval=%08lx ret=%08lx\n",
GetCurrentThreadId(),
ret->dll->name,ret->dll->ordbase+ret->ordinal,
context->Eax, (DWORD)ret->origreturn);
}
ret->origreturn = NULL; /* mark as empty */
}
/* assembly wrappers that save the context */
__ASM_GLOBAL_FUNC( SNOOP_Entry,
"call " __ASM_NAME("__wine_call_from_32_regs") "\n\t"
".long " __ASM_NAME("SNOOP_DoEntry") ",0" );
__ASM_GLOBAL_FUNC( SNOOP_Return,
"call " __ASM_NAME("__wine_call_from_32_regs") "\n\t"
".long " __ASM_NAME("SNOOP_DoReturn") ",0" );
#else /* __i386__ */
FARPROC RELAY_GetProcAddress( HMODULE module, IMAGE_EXPORT_DIRECTORY *exports,
@ -687,8 +1094,19 @@ FARPROC RELAY_GetProcAddress( HMODULE module, IMAGE_EXPORT_DIRECTORY *exports,
return proc;
}
FARPROC SNOOP_GetProcAddress( HMODULE hmod, IMAGE_EXPORT_DIRECTORY *exports,
DWORD exp_size, FARPROC origfun, DWORD ordinal )
{
return origfun;
}
void RELAY_SetupDLL( const char *module )
{
}
void SNOOP_SetupDLL( HMODULE hmod )
{
FIXME("snooping works only on i386 for now.\n");
}
#endif /* __i386__ */

29
include/snoop.h
View File

@ -1,29 +0,0 @@
/*
* Definitions for inter-dll snooping
*
* Copyright 1998 Marcus Meissner
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef __WINE_SNOOP_H
#define __WINE_SNOOP_H
#include <module.h>
extern void SNOOP16_RegisterDLL(NE_MODULE*,LPCSTR);
extern FARPROC16 SNOOP16_GetProcAddress16(HMODULE16,DWORD,FARPROC16);
extern int SNOOP_ShowDebugmsgSnoop(const char *dll,int ord,const char *fname);
#endif

1
loader/ne/module.c
View File

@ -41,7 +41,6 @@
#include "toolhelp.h"
#include "file.h"
#include "task.h"
#include "snoop.h"
#include "builtin16.h"
#include "stackframe.h"
#include "excpt.h"

450
relay32/snoop.c
View File

@ -1,450 +0,0 @@
/*
* 386-specific Win32 dll<->dll snooping functions
*
* Copyright 1998 Marcus Meissner
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "config.h"
#include "wine/port.h"
#include <assert.h>
#include <stdarg.h>
#include <stdio.h>
#include <string.h>
#include "ntstatus.h"
#include "windef.h"
#include "winbase.h"
#include "winreg.h"
#include "winternl.h"
#include "snoop.h"
#include "wine/debug.h"
#include "wine/exception.h"
#include "excpt.h"
#include "ntdll_misc.h"
WINE_DEFAULT_DEBUG_CHANNEL(snoop);
WINE_DECLARE_DEBUG_CHANNEL(seh);
static WINE_EXCEPTION_FILTER(page_fault)
{
if (GetExceptionCode() == EXCEPTION_ACCESS_VIOLATION ||
GetExceptionCode() == EXCEPTION_PRIV_INSTRUCTION)
return EXCEPTION_EXECUTE_HANDLER;
return EXCEPTION_CONTINUE_SEARCH;
}
extern const char **debug_snoop_excludelist;
extern const char **debug_snoop_includelist;
#ifdef __i386__
extern void WINAPI SNOOP_Entry();
extern void WINAPI SNOOP_Return();
#include "pshpack1.h"
typedef struct tagSNOOP_FUN {
/* code part */
BYTE lcall; /* 0xe8 call snoopentry (relative) */
/* NOTE: If you move snoopentry OR nrofargs fix the relative offset
* calculation!
*/
DWORD snoopentry; /* SNOOP_Entry relative */
/* unreached */
int nrofargs;
FARPROC origfun;
const char *name;
} SNOOP_FUN;
typedef struct tagSNOOP_DLL {
HMODULE hmod;
SNOOP_FUN *funs;
DWORD ordbase;
DWORD nrofordinals;
struct tagSNOOP_DLL *next;
char name[1];
} SNOOP_DLL;
typedef struct tagSNOOP_RETURNENTRY {
/* code part */
BYTE lcall; /* 0xe8 call snoopret relative*/
/* NOTE: If you move snoopret OR origreturn fix the relative offset
* calculation!
*/
DWORD snoopret; /* SNOOP_Ret relative */
/* unreached */
FARPROC origreturn;
SNOOP_DLL *dll;
DWORD ordinal;
DWORD origESP;
DWORD *args; /* saved args across a stdcall */
} SNOOP_RETURNENTRY;
typedef struct tagSNOOP_RETURNENTRIES {
SNOOP_RETURNENTRY entry[4092/sizeof(SNOOP_RETURNENTRY)];
struct tagSNOOP_RETURNENTRIES *next;
} SNOOP_RETURNENTRIES;
#include "poppack.h"
static SNOOP_DLL *firstdll = NULL;
static SNOOP_RETURNENTRIES *firstrets = NULL;
/***********************************************************************
* SNOOP_ShowDebugmsgSnoop
*
* Simple function to decide if a particular debugging message is
* wanted.
*/
int SNOOP_ShowDebugmsgSnoop(const char *dll, int ord, const char *fname) {
if(debug_snoop_excludelist || debug_snoop_includelist) {
const char **listitem;
char buf[80];
int len, len2, itemlen, show;
if(debug_snoop_excludelist) {
show = 1;
listitem = debug_snoop_excludelist;
} else {
show = 0;
listitem = debug_snoop_includelist;
}
len = strlen(dll);
assert(len < 64);
sprintf(buf, "%s.%d", dll, ord);
len2 = strlen(buf);
for(; *listitem; listitem++) {
itemlen = strlen(*listitem);
if((itemlen == len && !strncasecmp(*listitem, buf, len)) ||
(itemlen == len2 && !strncasecmp(*listitem, buf, len2)) ||
!strcasecmp(*listitem, fname)) {
show = !show;
break;
}
}
return show;
}
return 1;
}
void SNOOP_SetupDLL(HMODULE hmod)
{
SNOOP_DLL **dll = &firstdll;
char *p, *name;
void *addr;
SIZE_T size;
IMAGE_EXPORT_DIRECTORY *exports;
exports = RtlImageDirectoryEntryToData( hmod, TRUE, IMAGE_DIRECTORY_ENTRY_EXPORT, &size );
if (!exports) return;
name = (char *)hmod + exports->Name;
TRACE("hmod=%p, name=%s\n", hmod, name);
while (*dll) {
if ((*dll)->hmod == hmod)
{
/* another dll, loaded at the same address */
addr = (*dll)->funs;
size = (*dll)->nrofordinals * sizeof(SNOOP_FUN);
NtFreeVirtualMemory(GetCurrentProcess(), &addr, &size, MEM_RELEASE);
break;
}
dll = &((*dll)->next);
}
*dll = RtlReAllocateHeap(ntdll_get_process_heap(),
HEAP_ZERO_MEMORY, *dll,
sizeof(SNOOP_DLL) + strlen(name));
(*dll)->hmod = hmod;
(*dll)->ordbase = exports->Base;
(*dll)->nrofordinals = exports->NumberOfFunctions;
strcpy( (*dll)->name, name );
p = (*dll)->name + strlen((*dll)->name) - 4;
if (p > (*dll)->name && !strcasecmp( p, ".dll" )) *p = 0;
size = exports->NumberOfFunctions * sizeof(SNOOP_FUN);
NtAllocateVirtualMemory(GetCurrentProcess(), &addr, NULL, &size,
MEM_COMMIT | MEM_RESERVE, PAGE_EXECUTE_READWRITE);
if (!addr) {
RtlFreeHeap(ntdll_get_process_heap(),0,*dll);
FIXME("out of memory\n");
return;
}
(*dll)->funs = addr;
memset((*dll)->funs,0,size);
}
FARPROC SNOOP_GetProcAddress( HMODULE hmod, IMAGE_EXPORT_DIRECTORY *exports, DWORD exp_size,
FARPROC origfun, DWORD ordinal )
{
int i;
const char *ename;
WORD *ordinals;
DWORD *names;
SNOOP_DLL *dll = firstdll;
SNOOP_FUN *fun;
IMAGE_SECTION_HEADER *sec;
if (!TRACE_ON(snoop)) return origfun;
if (!*(LPBYTE)origfun) /* 0x00 is an imposs. opcode, poss. dataref. */
return origfun;
sec = RtlImageRvaToSection( RtlImageNtHeader(hmod), hmod, (char *)origfun - (char *)hmod );
if (!sec || !(sec->Characteristics & IMAGE_SCN_CNT_CODE))
return origfun; /* most likely a data reference */
while (dll) {
if (hmod == dll->hmod)
break;
dll=dll->next;
}
if (!dll) /* probably internal */
return origfun;
/* try to find a name for it */
ename = NULL;
names = (DWORD *)((char *)hmod + exports->AddressOfNames);
ordinals = (WORD *)((char *)hmod + exports->AddressOfNameOrdinals);
if (names) for (i = 0; i < exports->NumberOfNames; i++)
{
if (ordinals[i] == ordinal)
{
ename = (char *)hmod + names[i];
break;
}
}
if (!SNOOP_ShowDebugmsgSnoop(dll->name,ordinal,ename))
return origfun;
assert(ordinal < dll->nrofordinals);
fun = dll->funs+ordinal;
if (!fun->name)
{
fun->name = ename;
fun->lcall = 0xe8;
/* NOTE: origreturn struct member MUST come directly after snoopentry */
fun->snoopentry = (char*)SNOOP_Entry-((char*)(&fun->nrofargs));
fun->origfun = origfun;
fun->nrofargs = -1;
}
return (FARPROC)&(fun->lcall);
}
static void SNOOP_PrintArg(DWORD x)
{
int i,nostring;
DPRINTF("%08lx",x);
if (!HIWORD(x) || TRACE_ON(seh)) return; /* trivial reject to avoid faults */
__TRY
{
LPBYTE s=(LPBYTE)x;
i=0;nostring=0;
while (i<80) {
if (s[i]==0) break;
if (s[i]<0x20) {nostring=1;break;}
if (s[i]>=0x80) {nostring=1;break;}
i++;
}
if (!nostring && i > 5)
DPRINTF(" %s",debugstr_an((LPSTR)x,i));
else /* try unicode */
{
LPWSTR s=(LPWSTR)x;
i=0;nostring=0;
while (i<80) {
if (s[i]==0) break;
if (s[i]<0x20) {nostring=1;break;}
if (s[i]>0x100) {nostring=1;break;}
i++;
}
if (!nostring && i > 5) DPRINTF(" %s",debugstr_wn((LPWSTR)x,i));
}
}
__EXCEPT(page_fault)
{
}
__ENDTRY
}
#define CALLER1REF (*(DWORD*)context->Esp)
void WINAPI SNOOP_DoEntry( CONTEXT86 *context )
{
DWORD ordinal=0,entry = context->Eip - 5;
SNOOP_DLL *dll = firstdll;
SNOOP_FUN *fun = NULL;
SNOOP_RETURNENTRIES **rets = &firstrets;
SNOOP_RETURNENTRY *ret;
int i=0, max;
while (dll) {
if ( ((char*)entry>=(char*)dll->funs) &&
((char*)entry<=(char*)(dll->funs+dll->nrofordinals))
) {
fun = (SNOOP_FUN*)entry;
ordinal = fun-dll->funs;
break;
}
dll=dll->next;
}
if (!dll) {
FIXME("entrypoint 0x%08lx not found\n",entry);
return; /* oops */
}
/* guess cdecl ... */
if (fun->nrofargs<0) {
/* Typical cdecl return frame is:
* add esp, xxxxxxxx
* which has (for xxxxxxxx up to 255 the opcode "83 C4 xx".
* (after that 81 C2 xx xx xx xx)
*/
LPBYTE reteip = (LPBYTE)CALLER1REF;
if (reteip) {
if ((reteip[0]==0x83)&&(reteip[1]==0xc4))
fun->nrofargs=reteip[2]/4;
}
}
while (*rets) {
for (i=0;i<sizeof((*rets)->entry)/sizeof((*rets)->entry[0]);i++)
if (!(*rets)->entry[i].origreturn)
break;
if (i!=sizeof((*rets)->entry)/sizeof((*rets)->entry[0]))
break;
rets = &((*rets)->next);
}
if (!*rets) {
SIZE_T size = 4096;
VOID* addr;
NtAllocateVirtualMemory(GetCurrentProcess(), &addr, NULL, &size,
MEM_COMMIT | MEM_RESERVE,
PAGE_EXECUTE_READWRITE);
if (!addr) return;
*rets = addr;
memset(*rets,0,4096);
i = 0; /* entry 0 is free */
}
ret = &((*rets)->entry[i]);
ret->lcall = 0xe8;
/* NOTE: origreturn struct member MUST come directly after snoopret */
ret->snoopret = ((char*)SNOOP_Return)-(char*)(&ret->origreturn);
ret->origreturn = (FARPROC)CALLER1REF;
CALLER1REF = (DWORD)&ret->lcall;
ret->dll = dll;
ret->args = NULL;
ret->ordinal = ordinal;
ret->origESP = context->Esp;
context->Eip = (DWORD)fun->origfun;
if (fun->name) DPRINTF("%04lx:CALL %s.%s(",GetCurrentThreadId(),dll->name,fun->name);
else DPRINTF("%04lx:CALL %s.%ld(",GetCurrentThreadId(),dll->name,dll->ordbase+ordinal);
if (fun->nrofargs>0) {
max = fun->nrofargs; if (max>16) max=16;
for (i=0;i<max;i++)
{
SNOOP_PrintArg(*(DWORD*)(context->Esp + 4 + sizeof(DWORD)*i));
if (i<fun->nrofargs-1) DPRINTF(",");
}
if (max!=fun->nrofargs)
DPRINTF(" ...");
} else if (fun->nrofargs<0) {
DPRINTF("<unknown, check return>");
ret->args = RtlAllocateHeap(ntdll_get_process_heap(),
0,16*sizeof(DWORD));
memcpy(ret->args,(LPBYTE)(context->Esp + 4),sizeof(DWORD)*16);
}
DPRINTF(") ret=%08lx\n",(DWORD)ret->origreturn);
}
void WINAPI SNOOP_DoReturn( CONTEXT86 *context )
{
SNOOP_RETURNENTRY *ret = (SNOOP_RETURNENTRY*)(context->Eip - 5);
SNOOP_FUN *fun = &ret->dll->funs[ret->ordinal];
/* We haven't found out the nrofargs yet. If we called a cdecl
* function it is too late anyway and we can just set '0' (which
* will be the difference between orig and current ESP
* If stdcall -> everything ok.
*/
if (ret->dll->funs[ret->ordinal].nrofargs<0)
ret->dll->funs[ret->ordinal].nrofargs=(context->Esp - ret->origESP-4)/4;
context->Eip = (DWORD)ret->origreturn;
if (ret->args) {
int i,max;
if (fun->name)
DPRINTF("%04lx:RET %s.%s(", GetCurrentThreadId(), ret->dll->name, fun->name);
else
DPRINTF("%04lx:RET %s.%ld(", GetCurrentThreadId(),
ret->dll->name,ret->dll->ordbase+ret->ordinal);
max = fun->nrofargs;
if (max>16) max=16;
for (i=0;i<max;i++)
{
SNOOP_PrintArg(ret->args[i]);
if (i<max-1) DPRINTF(",");
}
DPRINTF(") retval=%08lx ret=%08lx\n",
context->Eax,(DWORD)ret->origreturn );
RtlFreeHeap(ntdll_get_process_heap(),0,ret->args);
ret->args = NULL;
}
else
{
if (fun->name)
DPRINTF("%04lx:RET %s.%s() retval=%08lx ret=%08lx\n",
GetCurrentThreadId(),
ret->dll->name, fun->name, context->Eax, (DWORD)ret->origreturn);
else
DPRINTF("%04lx:RET %s.%ld() retval=%08lx ret=%08lx\n",
GetCurrentThreadId(),
ret->dll->name,ret->dll->ordbase+ret->ordinal,
context->Eax, (DWORD)ret->origreturn);
}
ret->origreturn = NULL; /* mark as empty */
}
/* assembly wrappers that save the context */
__ASM_GLOBAL_FUNC( SNOOP_Entry,
"call " __ASM_NAME("__wine_call_from_32_regs") "\n\t"
".long " __ASM_NAME("SNOOP_DoEntry") ",0" );
__ASM_GLOBAL_FUNC( SNOOP_Return,
"call " __ASM_NAME("__wine_call_from_32_regs") "\n\t"
".long " __ASM_NAME("SNOOP_DoReturn") ",0" );
#else /* !__i386__ */
void SNOOP_SetupDLL(HMODULE hmod)
{
FIXME("snooping works only on i386 for now.\n");
}
FARPROC SNOOP_GetProcAddress( HMODULE hmod, IMAGE_EXPORT_DIRECTORY *exports, DWORD exp_size,
FARPROC origfun, DWORD ordinal )
{
return origfun;
}
#endif /* !__i386__ */