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Fix handling of UTF-16 UDF labels.

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* grub-core/fs/udf.c (grub_udf_iterate_dir): Move string-parsing part
	(read_string): .. here.
	(grub_udf_label): Use read_string.
This commit is contained in:
Vladimir 'phcoder' Serbinenko 2010-12-19 00:43:41 +01:00
parent 5cf86f4b0f
commit 7059d1ec14
2 changed files with 55 additions and 23 deletions
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8
ChangeLog
View file

@ -1,3 +1,11 @@
2010-12-19 Vladimir Serbinenko <phcoder@gmail.com>
Fix handling of UTF-16 UDF labels.
* grub-core/fs/udf.c (grub_udf_iterate_dir): Move string-parsing part
(read_string): .. here.
(grub_udf_label): Use read_string.
2010-12-19 BVK Chaitanya <bvk.groups@gmail.com>
* grub-core/normal/menu_entry.c (run): Execute commands from menu

70
grub-core/fs/udf.c
View file

@ -788,6 +788,43 @@ fail:
return 0;
}
static char *
read_string (grub_uint8_t *raw, grub_size_t sz)
{
grub_uint16_t *utf16;
char *ret;
grub_size_t utf16len = 0;
if (raw[0] != 8 && raw[0] != 16)
return NULL;
if (raw[0] == 8)
{
unsigned i;
utf16len = sz - 1;
utf16 = grub_malloc (utf16len * sizeof (utf16[0]));
if (!utf16)
return NULL;
for (i = 0; i < utf16len; i++)
utf16[i] = raw[i + 1];
}
if (raw[0] == 16)
{
unsigned i;
utf16len = (sz - 1) / 2;
utf16 = grub_malloc (utf16len * sizeof (utf16[0]));
if (!utf16)
return NULL;
for (i = 0; i < utf16len; i++)
utf16[i] = (raw[2 * i + 1] << 8) | raw[2*i + 2];
}
ret = grub_malloc (utf16len * 3 + 1);
if (ret)
*grub_utf16_to_utf8 ((grub_uint8_t *) ret, utf16, utf16len) = '\0';
grub_free (utf16);
return ret;
}
static int
grub_udf_iterate_dir (grub_fshelp_node_t dir,
int NESTED_FUNC_ATTR
@ -841,10 +878,8 @@ grub_udf_iterate_dir (grub_fshelp_node_t dir,
else
{
enum grub_fshelp_filetype type;
char *filename;
grub_uint8_t raw[dirent.file_ident_length];
grub_uint16_t utf16[dirent.file_ident_length - 1];
grub_uint8_t filename[dirent.file_ident_length * 2];
grub_size_t utf16len = 0;
type = ((dirent.characteristics & GRUB_UDF_FID_CHAR_DIRECTORY) ?
(GRUB_FSHELP_DIR) : (GRUB_FSHELP_REG));
@ -855,27 +890,16 @@ grub_udf_iterate_dir (grub_fshelp_node_t dir,
!= dirent.file_ident_length)
return 0;
if (raw[0] == 8)
{
unsigned i;
utf16len = dirent.file_ident_length - 1;
for (i = 0; i < utf16len; i++)
utf16[i] = raw[i + 1];
}
if (raw[0] == 16)
{
unsigned i;
utf16len = (dirent.file_ident_length - 1) / 2;
for (i = 0; i < utf16len; i++)
utf16[i] = (raw[2 * i + 1] << 8) | raw[2*i + 2];
}
if (raw[0] == 8 || raw[0] == 16)
{
*grub_utf16_to_utf8 (filename, utf16, utf16len) = '\0';
filename = read_string (raw, dirent.file_ident_length);
if (!filename)
grub_print_error ();
if (hook ((char *) filename, type, child))
return 1;
if (filename && hook (filename, type, child))
{
grub_free (filename);
return 1;
}
grub_free (filename);
}
}
@ -1004,7 +1028,7 @@ grub_udf_label (grub_device_t device, char **label)
if (data)
{
*label = grub_strdup ((char *) &data->lvd.ident[1]);
*label = read_string (data->lvd.ident, sizeof (data->lvd.ident));
grub_free (data);
}
else