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Fix stopAllExcept with WiFiClientSecure (#8136)

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Fixes #8079

Because WiFiClientSecure inherits WiFiClient, and WiFiClientSecureCtx also
inherits WiFiClient, they both end up in the list of TCP connections that
are used for WiFiClient::stopAllExcept().  This would cause the underlying
SSL connection to be closed whenever you attempted to
stopAllExcept(WiFiClientSecure)

Fix by adding a "_owned"(by) pointer in the WiFiClient object which points to
nullptr (default case) or to the associated lower-layer connection.
When stopping all connections except one, only look at the lowermost
connections.
This commit is contained in:
Earle F. Philhower, III 2021-06-20 10:43:05 -07:00 committed by GitHub
parent 2f37c967e1
commit 45e7976c50
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 18 additions and 6 deletions
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19
libraries/ESP8266WiFi/src/WiFiClient.cpp
View File

@ -77,14 +77,14 @@ WiFiClient* SList<WiFiClient>::_s_first = 0;
WiFiClient::WiFiClient()
: _client(0)
: _client(0), _owned(0)
{
_timeout = 5000;
WiFiClient::_add(this);
}
WiFiClient::WiFiClient(ClientContext* client)
: _client(client)
: _client(client), _owned(0)
{
_timeout = 5000;
_client->ref();
@ -106,6 +106,7 @@ WiFiClient::WiFiClient(const WiFiClient& other)
_client = other._client;
_timeout = other._timeout;
_localPort = other._localPort;
_owned = other._owned;
if (_client)
_client->ref();
WiFiClient::_add(this);
@ -118,6 +119,7 @@ WiFiClient& WiFiClient::operator=(const WiFiClient& other)
_client = other._client;
_timeout = other._timeout;
_localPort = other._localPort;
_owned = other._owned;
if (_client)
_client->ref();
return *this;
@ -382,9 +384,18 @@ void WiFiClient::stopAll()
void WiFiClient::stopAllExcept(WiFiClient* except)
{
// Stop all will look at the lowest-level wrapper connections only
while (except->_owned) {
except = except->_owned;
}
for (WiFiClient* it = _s_first; it; it = it->_next) {
if (it != except) {
it->stop();
WiFiClient* conn = it;
// Find the lowest-level owner of the current list entry
while (conn->_owned) {
conn = conn->_owned;
}
if (conn != except) {
conn->stop();
}
}
}

1
libraries/ESP8266WiFi/src/WiFiClient.h
View File

@ -144,6 +144,7 @@ protected:
void _err(int8_t err);
ClientContext* _client;
WiFiClient* _owned;
static uint16_t _localPort;
};

4
libraries/ESP8266WiFi/src/WiFiClientSecureBearSSL.h
View File

@ -232,8 +232,8 @@ class WiFiClientSecure : public WiFiClient {
public:
WiFiClientSecure():_ctx(new WiFiClientSecureCtx()) { }
WiFiClientSecure(const WiFiClientSecure &rhs): WiFiClient(), _ctx(rhs._ctx) { }
WiFiClientSecure():_ctx(new WiFiClientSecureCtx()) { _owned = _ctx.get(); }
WiFiClientSecure(const WiFiClientSecure &rhs): WiFiClient(), _ctx(rhs._ctx) { if (_ctx) _owned = _ctx.get(); }
~WiFiClientSecure() override { _ctx = nullptr; }
WiFiClientSecure& operator=(const WiFiClientSecure&) = default; // The shared-ptrs handle themselves automatically