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- Used wine_dbgstr_a to prevent an overflow. 

- Improved support to call macros with a variable number of
  parameters.
- Put a check to prevent an out of bounds access.
This commit is contained in:
Ken Belleau 2005-01-25 20:08:46 +00:00 committed by Alexandre Julliard
parent c5b0a1792c
commit 43ae5e5441
4 changed files with 22 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
programs/winhelp/hlp2sgml.c
View File

@ -323,6 +323,11 @@ int wine_dbg_log( int cls, const char *channel, const char *func, const char *fo
return 1;
}
const char *wine_dbgstr_a( const char *s )
{
return NULL;
}
HBITMAP WINAPI CreateDIBitmap(HDC hdc, CONST BITMAPINFOHEADER* bih, DWORD a, CONST void* ptr, CONST BITMAPINFO* bi, UINT c)
{
return 0;

2
programs/winhelp/hlpfile.c
View File

@ -915,7 +915,7 @@ static BOOL HLPFILE_AddParagraph(HLPFILE *hlpfile, BYTE *buf, BYTE *end, unsigne
while (text < text_end && format < format_end)
{
WINE_TRACE("Got text: '%s' (%p/%p - %p/%p)\n", text, text, text_end, format, format_end);
WINE_TRACE("Got text: '%s' (%p/%p - %p/%p)\n", wine_dbgstr_a(text), text, text_end, format, format_end);
textsize = strlen(text) + 1;
if (textsize > 1)
{

24
programs/winhelp/macro.lex.l
View File

@ -144,7 +144,7 @@ static int MACRO_CallBoolFunc(FARPROC fn, const char* args, void** ret);
static int MACRO_CheckArgs(void* pa[], unsigned max, const char* args)
{
int t;
int idx = 0;
int len = 0, idx = 0;
WINE_TRACE("Checking %s\n", args);
@ -152,6 +152,7 @@ static int MACRO_CheckArgs(void* pa[], unsigned max, const char* args)
if (*args)
{
len = strlen(args);
for (;;)
{
t = yylex();
@ -182,11 +183,16 @@ static int MACRO_CheckArgs(void* pa[], unsigned max, const char* args)
}
idx++;
if (*++args == '\0') break;
if (yylex() != ',') {WINE_WARN("missing ,\n");return -1;}
if (idx == max) {WINE_FIXME("stack overflow (%d)\n", max);return -1;}
t = yylex();
if (t == ')') goto CheckArgs_end;
if (t != ',') {WINE_WARN("missing ,\n");return -1;}
if (idx >= max) {WINE_FIXME("stack overflow (%d)\n", max);return -1;}
}
}
if (yylex() != ')') {WINE_WARN("missing )\n");return -1;}
CheckArgs_end:
while (len > idx) pa[--len] = NULL;
return idx;
}
@ -201,12 +207,12 @@ static int MACRO_CallBoolFunc(FARPROC fn, const char* args, void** ret)
void* pa[2];
int idx = MACRO_CheckArgs(pa, sizeof(pa)/sizeof(pa[0]), args);
if (idx == -1) return 0;
if (!fn) return 1;
if (idx < 0) return 0;
if (!fn) return 1;
WINE_TRACE("calling with %u pmts\n", idx);
switch (idx)
switch (strlen(args))
{
case 0: *ret = (void*)(fn)(); break;
case 1: *ret = (void*)(fn)(pa[0]); break;
@ -226,12 +232,12 @@ static int MACRO_CallVoidFunc(FARPROC fn, const char* args)
void* pa[6];
int idx = MACRO_CheckArgs(pa, sizeof(pa)/sizeof(pa[0]), args);
if (idx == -1) return 0;
if (!fn) return 1;
if (idx < 0) return 0;
if (!fn) return 1;
WINE_TRACE("calling %p with %u pmts\n", fn, idx);
switch (idx)
switch (strlen(args))
{
case 0: (fn)(); break;
case 1: (fn)(pa[0]); break;

2
programs/winhelp/winhelp.c
View File

@ -1089,7 +1089,7 @@ static LRESULT CALLBACK WINHELP_TextWndProc(HWND hWnd, UINT msg, WPARAM wParam,
hlpfile = WINHELP_LookupHelpFile(part->link->lpszString);
if (part->link->window == -1)
wi = win->info;
else if (part->link->window < hlpfile->numWindows)
else if ((part->link->window >= 0) && (part->link->window < hlpfile->numWindows))
wi = &hlpfile->windows[part->link->window];
else
{