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Empty SNI names are not valid

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While empty inputs to SSL_set1_host() clear the reference identifier
list.

Reviewed-by: Rich Salz <rsalz@openssl.org>
This commit is contained in:
Viktor Dukhovni
2016-01-16 12:57:24 -05:00
parent ecdd0ff733
commit 0982ecaaee
2 changed files with 6 additions and 3 deletions
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5
ssl/s3_lib.c
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@@ -3534,13 +3534,16 @@ long ssl3_ctrl(SSL *s, int cmd, long larg, void *parg)
#endif /* !OPENSSL_NO_EC */
case SSL_CTRL_SET_TLSEXT_HOSTNAME:
if (larg == TLSEXT_NAMETYPE_host_name) {
size_t len;
OPENSSL_free(s->tlsext_hostname);
s->tlsext_hostname = NULL;
ret = 1;
if (parg == NULL)
break;
if (strlen((char *)parg) > TLSEXT_MAXLEN_host_name) {
len = strlen((char *)parg);
if (len == 0 || len > TLSEXT_MAXLEN_host_name) {
SSLerr(SSL_F_SSL3_CTRL, SSL_R_SSL3_EXT_INVALID_SERVERNAME);
return 0;
}