SECStatus
SSL_HandshakeNegotiatedExtension(PRFileDesc * socket,
SSLExtensionType extId,
PRBool *pYes)
{
/* some decisions derived from SSL_GetChannelInfo */
sslSocket * sslsocket = NULL;
PRBool enoughFirstHsDone = PR_FALSE;
if (!pYes) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return SECFailure;
}
sslsocket = ssl_FindSocket(socket);
if (!sslsocket) {
SSL_DBG(("%d: SSL[%d]: bad socket in HandshakeNegotiatedExtension",
SSL_GETPID(), socket));
return SECFailure;
}
*pYes = PR_FALSE;
if (sslsocket->firstHsDone) {
enoughFirstHsDone = PR_TRUE;
} else if (sslsocket->ssl3.initialized && ssl3_CanFalseStart(sslsocket)) {
enoughFirstHsDone = PR_TRUE;
}
/* according to public API SSL_GetChannelInfo, this doesn't need a lock */
if (sslsocket->opt.useSecurity && enoughFirstHsDone) {
if (sslsocket->ssl3.initialized) { /* SSL3 and TLS */
/* now we know this socket went through ssl3_InitState() and
* ss->xtnData got initialized, which is the only member accessed by
* ssl3_ExtensionNegotiated();
* Member xtnData appears to get accessed in functions that handle
* the handshake (hello messages and extension sending),
* therefore the handshake lock should be sufficient.
*/
ssl_GetSSL3HandshakeLock(sslsocket);
*pYes = ssl3_ExtensionNegotiated(sslsocket, extId);
ssl_ReleaseSSL3HandshakeLock(sslsocket);
}
}
return SECSuccess;
}
PRBool SSLInt_ExtensionNegotiated(PRFileDesc *fd, PRUint16 ext) {
sslSocket *ss = ssl_FindSocket(fd);
return (PRBool)(ss && ssl3_ExtensionNegotiated(ss, ext));
}
