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* grub-core/commands/xnu_uuid.c: Remove variable length arrays.

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This commit is contained in:
Vladimir Serbinenko 2013-11-12 01:19:34 +01:00
parent a388e25576
commit 44a387e0ea
2 changed files with 15 additions and 6 deletions
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4
ChangeLog
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@ -1,3 +1,7 @@
2013-11-12 Vladimir Serbinenko <phcoder@gmail.com>
* grub-core/commands/xnu_uuid.c: Remove variable length arrays.
2013-11-12 Vladimir Serbinenko <phcoder@gmail.com>
* grub-core/tests/xnu_uuid_test.c: New test.

17
grub-core/commands/xnu_uuid.c
View file

@ -50,7 +50,7 @@ grub_cmd_xnu_uuid (grub_command_t cmd __attribute__ ((unused)),
grub_uint8_t *xnu_uuid;
char uuid_string[sizeof ("xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx")];
char *ptr;
grub_uint8_t ctx[GRUB_MD_MD5->contextsize];
void *ctx;
int low = 0;
if (argc < 1)
@ -65,11 +65,14 @@ grub_cmd_xnu_uuid (grub_command_t cmd __attribute__ ((unused)),
serial = grub_cpu_to_be64 (grub_strtoull (args[0], 0, 16));
GRUB_MD_MD5->init (&ctx);
GRUB_MD_MD5->write (&ctx, hash_prefix, sizeof (hash_prefix));
GRUB_MD_MD5->write (&ctx, &serial, sizeof (serial));
GRUB_MD_MD5->final (&ctx);
xnu_uuid = GRUB_MD_MD5->read (&ctx);
ctx = grub_zalloc (GRUB_MD_MD5->contextsize);
if (!ctx)
return grub_errno;
GRUB_MD_MD5->init (ctx);
GRUB_MD_MD5->write (ctx, hash_prefix, sizeof (hash_prefix));
GRUB_MD_MD5->write (ctx, &serial, sizeof (serial));
GRUB_MD_MD5->final (ctx);
xnu_uuid = GRUB_MD_MD5->read (ctx);
grub_snprintf (uuid_string, sizeof (uuid_string),
"%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x",
@ -91,6 +94,8 @@ grub_cmd_xnu_uuid (grub_command_t cmd __attribute__ ((unused)),
if (argc > 1)
grub_env_set (args[1], uuid_string);
grub_free (ctx);
return GRUB_ERR_NONE;
}