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gwin32: Use gsize internally in g_wcsdup()

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This allows it to handle strings up to length `G_MAXSIZE` — previously
it would overflow with such strings.

Update the several copies of it identically.

Signed-off-by: Philip Withnall <pwithnall@endlessos.org>
Helps: #2319
This commit is contained in:
Philip Withnall 2021-02-04 13:50:37 +00:00
parent f9ee2275cb
commit 2aaf593a9e
2 changed files with 39 additions and 17 deletions
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20
gio/giowin32-private.c
View File

@ -16,11 +16,12 @@
* along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#include "gstrfuncsprivate.h"
static gssize
static gsize
g_utf16_len (const gunichar2 *str)
{
gssize result;
gsize result;
for (result = 0; str[0] != 0; str++, result++)
;
@ -31,17 +32,20 @@ g_utf16_len (const gunichar2 *str)
static gunichar2 *
g_wcsdup (const gunichar2 *str, gssize str_len)
{
gssize str_size;
gsize str_len_unsigned;
gsize str_size;
g_return_val_if_fail (str != NULL, NULL);
if (str_len == -1)
str_len = g_utf16_len (str);
if (str_len < 0)
str_len_unsigned = g_utf16_len (str);
else
str_len_unsigned = (gsize) str_len;
g_assert (str_len <= G_MAXSIZE / sizeof (gunichar2) - 1);
str_size = (str_len + 1) * sizeof (gunichar2);
g_assert (str_len_unsigned <= G_MAXSIZE / sizeof (gunichar2) - 1);
str_size = (str_len_unsigned + 1) * sizeof (gunichar2);
return g_memdup (str, str_size);
return g_memdup2 (str, str_size);
}
static const gunichar2 *

36
gio/gwin32registrykey.c
View File

@ -127,16 +127,34 @@ typedef enum
G_WIN32_REGISTRY_UPDATED_PATH = 1,
} GWin32RegistryKeyUpdateFlag;
static gunichar2 *
g_wcsdup (const gunichar2 *str,
gssize str_size)
static gsize
g_utf16_len (const gunichar2 *str)
{
if (str_size == -1)
{
str_size = wcslen (str) + 1;
str_size *= sizeof (gunichar2);
}
return g_memdup (str, str_size);
gsize result;
for (result = 0; str[0] != 0; str++, result++)
;
return result;
}
static gunichar2 *
g_wcsdup (const gunichar2 *str, gssize str_len)
{
gsize str_len_unsigned;
gsize str_size;
g_return_val_if_fail (str != NULL, NULL);
if (str_len < 0)
str_len_unsigned = g_utf16_len (str);
else
str_len_unsigned = (gsize) str_len;
g_assert (str_len_unsigned <= G_MAXSIZE / sizeof (gunichar2) - 1);
str_size = (str_len_unsigned + 1) * sizeof (gunichar2);
return g_memdup2 (str, str_size);
}
/**