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wine
wine-cw
Commits
2c52f888
Commit
2c52f888
authored
Dec 01, 2007
by
Kirill K. Smirnov
Committed by
Alexandre Julliard
Dec 03, 2007
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Plain Diff
winhelp: Rewrite internal files lookup using B+ tree search. Add some sanity checks.
parent
f4023569
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Side-by-side
Showing
1 changed file
with
37 additions
and
59 deletions
+37
-59
hlpfile.c
programs/winhelp/hlpfile.c
+37
-59
No files found.
programs/winhelp/hlpfile.c
View file @
2c52f888
...
...
@@ -51,6 +51,7 @@ static inline unsigned GET_UINT(const BYTE* buffer, unsigned i)
static
HLPFILE
*
first_hlpfile
=
0
;
static
BYTE
*
file_buffer
;
static
UINT
file_buffer_size
;
static
struct
{
...
...
@@ -1328,7 +1329,6 @@ static BOOL HLPFILE_ReadFont(HLPFILE* hlpfile)
static
BOOL
HLPFILE_ReadFileToBuffer
(
HFILE
hFile
)
{
BYTE
header
[
16
],
dummy
[
1
];
UINT
size
;
if
(
_hread
(
hFile
,
header
,
16
)
!=
16
)
{
WINE_WARN
(
"header
\n
"
);
return
FALSE
;};
...
...
@@ -1336,87 +1336,65 @@ static BOOL HLPFILE_ReadFileToBuffer(HFILE hFile)
if
(
GET_UINT
(
header
,
0
)
!=
0x00035F3F
)
{
WINE_WARN
(
"wrong header
\n
"
);
return
FALSE
;};
size
=
GET_UINT
(
header
,
12
);
file_buffer
=
HeapAlloc
(
GetProcessHeap
(),
0
,
size
+
1
);
file_buffer_
size
=
GET_UINT
(
header
,
12
);
file_buffer
=
HeapAlloc
(
GetProcessHeap
(),
0
,
file_buffer_
size
+
1
);
if
(
!
file_buffer
)
return
FALSE
;
memcpy
(
file_buffer
,
header
,
16
);
if
(
_hread
(
hFile
,
file_buffer
+
16
,
size
-
16
)
!=
size
-
16
)
if
(
_hread
(
hFile
,
file_buffer
+
16
,
file_buffer_size
-
16
)
!=
file_buffer_
size
-
16
)
{
WINE_WARN
(
"filesize1
\n
"
);
return
FALSE
;};
if
(
_hread
(
hFile
,
dummy
,
1
)
!=
0
)
WINE_WARN
(
"filesize2
\n
"
);
file_buffer
[
size
]
=
'\0'
;
/* FIXME: was '0', sounds ackward to me */
file_buffer
[
file_buffer_
size
]
=
'\0'
;
/* FIXME: was '0', sounds ackward to me */
return
TRUE
;
}
/**************************************************************************
* comp_FindSubFile
*
* HLPFILE_BPTreeCompare function for HLPFILE directory.
*
*/
static
int
comp_FindSubFile
(
void
*
p
,
const
void
*
key
,
int
leaf
,
void
**
next
)
{
*
next
=
(
char
*
)
p
+
strlen
(
p
)
+
(
leaf
?
5
:
3
);
WINE_TRACE
(
"Comparing '%s' with '%s'
\n
"
,
(
char
*
)
p
,
(
char
*
)
key
);
return
strcmp
(
p
,
key
);
}
/***********************************************************************
*
* HLPFILE_FindSubFile
*/
static
BOOL
HLPFILE_FindSubFile
(
LPCSTR
name
,
BYTE
**
subbuf
,
BYTE
**
subend
)
{
BYTE
*
root
=
file_buffer
+
GET_UINT
(
file_buffer
,
4
);
BYTE
*
end
=
file_buffer
+
GET_UINT
(
file_buffer
,
12
);
BYTE
*
ptr
;
BYTE
*
bth
;
unsigned
pgsize
;
unsigned
pglast
;
unsigned
nentries
;
unsigned
i
,
n
;
bth
=
root
+
9
;
/* FIXME: this should be using the EnumBTree functions from this file */
pgsize
=
GET_USHORT
(
bth
,
4
);
WINE_TRACE
(
"%s => pgsize=%u #pg=%u rootpg=%u #lvl=%u
\n
"
,
name
,
pgsize
,
GET_USHORT
(
bth
,
30
),
GET_USHORT
(
bth
,
26
),
GET_USHORT
(
bth
,
32
));
ptr
=
bth
+
38
+
GET_USHORT
(
bth
,
26
)
*
pgsize
;
for
(
n
=
1
;
n
<
GET_USHORT
(
bth
,
32
);
n
++
)
WINE_TRACE
(
"looking for file '%s'
\n
"
,
name
);
ptr
=
HLPFILE_BPTreeSearch
(
file_buffer
+
GET_UINT
(
file_buffer
,
4
),
name
,
comp_FindSubFile
);
if
(
!
ptr
)
return
FALSE
;
*
subbuf
=
file_buffer
+
GET_UINT
(
ptr
,
strlen
(
name
)
+
1
);
if
(
*
subbuf
>=
file_buffer
+
file_buffer_size
)
{
nentries
=
GET_USHORT
(
ptr
,
2
);
pglast
=
GET_USHORT
(
ptr
,
4
);
WINE_TRACE
(
"[%u]: #entries=%u next=%u
\n
"
,
n
,
nentries
,
pglast
);
ptr
+=
6
;
for
(
i
=
0
;
i
<
nentries
;
i
++
)
{
char
*
str
=
(
char
*
)
ptr
;
WINE_TRACE
(
"<= %s
\n
"
,
str
);
if
(
strcmp
(
name
,
str
)
<
0
)
break
;
ptr
+=
strlen
(
str
)
+
1
;
pglast
=
GET_USHORT
(
ptr
,
0
);
ptr
+=
2
;
}
ptr
=
bth
+
38
+
pglast
*
pgsize
;
WINE_ERR
(
"internal file %s does not fit
\n
"
,
name
);
return
FALSE
;
}
nentries
=
GET_USHORT
(
ptr
,
2
);
ptr
+=
8
;
for
(
i
=
0
;
i
<
nentries
;
i
++
)
*
subend
=
*
subbuf
+
GET_UINT
(
*
subbuf
,
0
);
if
(
*
subend
>
file_buffer
+
file_buffer_size
)
{
char
*
fname
=
(
char
*
)
ptr
;
ptr
+=
strlen
(
fname
)
+
1
;
WINE_TRACE
(
"
\\
- %s
\n
"
,
fname
);
if
(
strcmp
(
fname
,
name
)
==
0
)
{
*
subbuf
=
file_buffer
+
GET_UINT
(
ptr
,
0
);
*
subend
=
*
subbuf
+
GET_UINT
(
*
subbuf
,
0
);
if
(
file_buffer
>
*
subbuf
||
*
subbuf
>
*
subend
||
*
subend
>
end
)
{
WINE_WARN
(
"size mismatch
\n
"
);
return
FALSE
;
}
return
TRUE
;
}
ptr
+=
4
;
WINE_ERR
(
"internal file %s does not fit
\n
"
,
name
);
return
FALSE
;
}
return
FALSE
;
if
(
GET_UINT
(
*
subbuf
,
0
)
<
GET_UINT
(
*
subbuf
,
4
)
+
9
)
{
WINE_ERR
(
"invalid size provided for internal file %s
\n
"
,
name
);
return
FALSE
;
}
return
TRUE
;
}
/***********************************************************************
...
...
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