Function handleSSLReturnCode

src/tls.cpp:746–771

Process the return code received from OpenSSL> * Update the want parameter with expected I/O. * Update the connection's error state if a real error has occured. * Returns an SSL error code, or 0 if no further handling is required. */

 * Returns an SSL error code, or 0 if no further handling is required.
 */
static int handleSSLReturnCode(tls_connection *conn, int ret_value, WantIOType *want) {
    if (ret_value <= 0) {
        int ssl_err = SSL_get_error(conn->ssl, ret_value);
        switch (ssl_err) {
            case SSL_ERROR_WANT_WRITE:
                *want = WANT_WRITE;
                return 0;
            case SSL_ERROR_WANT_READ:
                *want = WANT_READ;
                return 0;
            case SSL_ERROR_SYSCALL:
                conn->c.last_errno = errno;
                if (conn->ssl_error) zfree(conn->ssl_error);
                conn->ssl_error = errno ? zstrdup(strerror(errno)) : NULL;
                break;
            default:
                /* Error! */
                updateTLSError(conn);
                break;
        }

        return ssl_err;
    }

    return 0;
}

void registerSSLEvent(tls_connection *conn, WantIOType want) {
    int mask = aeGetFileEvents(serverTL->el, conn->c.fd);