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Add setSSLVersion call to SSL object (#7920)

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* Add setSSLVersion call to SSL object

Allow users to only allow specific TLS versions for connections with an
additional call in their app, similar to the setCiphers call.

Fixes #7918

* Add SSL level options to WiFiServerSecure
This commit is contained in:
Earle F. Philhower, III
2021-03-15 12:22:06 -07:00
committed by GitHub
parent dcdd4313cb
commit 7475ba7ff3
6 changed files with 68 additions and 11 deletions
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15
libraries/ESP8266WiFi/src/WiFiServerSecureBearSSL.cpp
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@@ -79,13 +79,13 @@ WiFiClientSecure WiFiServerSecure::available(uint8_t* status) {
(void) status; // Unused
if (_unclaimed) {
if (_sk && _sk->isRSA()) {
WiFiClientSecure result(_unclaimed, _chain, _sk, _iobuf_in_size, _iobuf_out_size, _cache, _client_CA_ta);
WiFiClientSecure result(_unclaimed, _chain, _sk, _iobuf_in_size, _iobuf_out_size, _cache, _client_CA_ta, _tls_min, _tls_max);
_unclaimed = _unclaimed->next();
result.setNoDelay(_noDelay);
DEBUGV("WS:av\r\n");
return result;
} else if (_sk && _sk->isEC()) {
WiFiClientSecure result(_unclaimed, _chain, _cert_issuer_key_type, _sk, _iobuf_in_size, _iobuf_out_size, _cache, _client_CA_ta);
WiFiClientSecure result(_unclaimed, _chain, _cert_issuer_key_type, _sk, _iobuf_in_size, _iobuf_out_size, _cache, _client_CA_ta, _tls_min, _tls_max);
_unclaimed = _unclaimed->next();
result.setNoDelay(_noDelay);
DEBUGV("WS:av\r\n");
@@ -101,4 +101,15 @@ WiFiClientSecure WiFiServerSecure::available(uint8_t* status) {
return WiFiClientSecure();
}
bool WiFiServerSecure::setSSLVersion(uint32_t min, uint32_t max) {
if ( ((min != BR_TLS10) && (min != BR_TLS11) && (min != BR_TLS12)) ||
((max != BR_TLS10) && (max != BR_TLS11) && (max != BR_TLS12)) ||
(max < min) ) {
return false; // Invalid options
}
_tls_min = min;
_tls_max = max;
return true;
}
};