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* secmem.c (ptr_into_pool_p): New.

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(m_is_secure): Implement in terms of above.  Also check that the
        pool has been initialized.
This commit is contained in:
Werner Koch 2007-02-12 14:13:37 +00:00
parent 1475939994
commit 22be39dfac
2 changed files with 24 additions and 1 deletions
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6
util/ChangeLog
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@ -1,3 +1,9 @@
2007-02-12 Werner Koch <wk@g10code.com>
* secmem.c (ptr_into_pool_p): New.
(m_is_secure): Implement in terms of above. Also check that the
pool has been initialized.
2007-02-10 David Shaw <dshaw@jabberwocky.com>
* http.c (do_parse_uri): Remove the hkp port 11371 detection. We

19
util/secmem.c
View File

@ -449,10 +449,27 @@ secmem_free( void *a )
cur_alloced -= size;
}
/* Check whether P points into the pool. */
static int
ptr_into_pool_p (const void *p)
{
/* We need to convert pointers to addresses. This is required by
C-99 6.5.8 to avoid undefined behaviour. Using size_t is at
least only implementation defined. See also
http://lists.gnupg.org/pipermail/gcrypt-devel/2007-February/001102.html
*/
size_t p_addr = (size_t)p;
size_t pool_addr = (size_t)pool;
return p_addr >= pool_addr && p_addr < pool_addr+poolsize;
}
int
m_is_secure( const void *p )
{
return p >= pool && p < (void*)((char*)pool+poolsize);
return pool_okay && ptr_into_pool_p (p);
}