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safety

This commit is contained in:
Lev Walkin 2017-07-20 14:51:08 +03:00
parent d88bea9b11
commit 39837e6c26
2 changed files with 11 additions and 0 deletions
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8
skeletons/asn_system.h
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@ -138,4 +138,12 @@ typedef unsigned int uint32_t;
#endif /* __GNUC__ */
#endif /* MIN */
#ifndef SIZE_MAX
#define SIZE_MAX ULONG_MAX
#endif
#ifndef RSIZE_MAX /* C11, Annex K */
#define RSIZE_MAX (SIZE_MAX >> 1)
#endif
#endif /* ASN_SYSTEM_H */

3
skeletons/oer_support.c
View File

@ -57,6 +57,9 @@ oer_fetch_length(const void *bufptr, size_t size, size_t *len_r) {
len = (len << 8) + *b;
}
if(len > RSIZE_MAX) /* A bit of C11 validation */
return -1;
*len_r = len;
assert(len_len + 1 == bend - (const uint8_t *)bufptr);
return len_len + 1;