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Hakase
2018-05-24 00:50:03 +09:00
parent 568c1175f2
commit ee7a19ebef
19 changed files with 418 additions and 219 deletions
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crypto/asn1/a_strex.c
-50
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@@ -624,53 +624,3 @@ int ASN1_STRING_to_UTF8(unsigned char **out, const ASN1_STRING *in)
*out = stmp.data;
return stmp.length;
}
/* Return 1 if host is a valid hostname and 0 otherwise */
int asn1_valid_host(const ASN1_STRING *host)
{
int hostlen = host->length;
const unsigned char *hostptr = host->data;
int type = host->type;
int i;
signed char width = -1;
unsigned short chflags = 0, prevchflags;
if (type > 0 && type < 31)
width = tag2nbyte[type];
if (width == -1 || hostlen == 0)
return 0;
/* Treat UTF8String as width 1 as any MSB set is invalid */
if (width == 0)
width = 1;
for (i = 0 ; i < hostlen; i+= width) {
prevchflags = chflags;
/* Value must be <= 0x7F: check upper bytes are all zeroes */
if (width == 4) {
if (*hostptr++ != 0 || *hostptr++ != 0 || *hostptr++ != 0)
return 0;
} else if (width == 2) {
if (*hostptr++ != 0)
return 0;
}
if (*hostptr > 0x7f)
return 0;
chflags = char_type[*hostptr++];
if (!(chflags & (CHARTYPE_HOST_ANY | CHARTYPE_HOST_WILD))) {
/* Nothing else allowed at start or end of string */
if (i == 0 || i == hostlen - 1)
return 0;
/* Otherwise invalid if not dot or hyphen */
if (!(chflags & (CHARTYPE_HOST_DOT | CHARTYPE_HOST_HYPHEN)))
return 0;
/*
* If previous is dot or hyphen then illegal unless both
* are hyphens: as .- -. .. are all illegal
*/
if (prevchflags & (CHARTYPE_HOST_DOT | CHARTYPE_HOST_HYPHEN)
&& ((prevchflags & CHARTYPE_HOST_DOT)
|| (chflags & CHARTYPE_HOST_DOT)))
return 0;
}
}
return 1;
}