int guac_vnc_client_free_handler()

in src/protocols/vnc/client.c [127:220]

• 53 lines of code
• 14 McCabe index (conditional complexity)

int guac_vnc_client_free_handler(guac_client* client) {

    guac_vnc_client* vnc_client = (guac_vnc_client*) client->data;
    guac_vnc_settings* settings = vnc_client->settings;

    /* Clean up VNC client*/
    rfbClient* rfb_client = vnc_client->rfb_client;
    if (rfb_client != NULL) {

        /* Wait for client thread to finish */
        pthread_join(vnc_client->client_thread, NULL);

        /* Free memory that may not be free'd by libvncclient's
         * rfbClientCleanup() prior to libvncclient 0.9.12 */

        if (rfb_client->frameBuffer != NULL) {
            free(rfb_client->frameBuffer);
            rfb_client->frameBuffer = NULL;
        }

        if (rfb_client->raw_buffer != NULL) {
            free(rfb_client->raw_buffer);
            rfb_client->raw_buffer = NULL;
        }

        if (rfb_client->rcSource != NULL) {
            free(rfb_client->rcSource);
            rfb_client->rcSource = NULL;
        }

        /* Free VNC rfbClientData linked list (may not be free'd by
         * rfbClientCleanup(), depending on libvncclient version) */

        while (rfb_client->clientData != NULL) {
            rfbClientData* next = rfb_client->clientData->next;
            free(rfb_client->clientData);
            rfb_client->clientData = next;
        }

        rfbClientCleanup(rfb_client);

    }

#ifdef ENABLE_COMMON_SSH
    /* Free SFTP filesystem, if loaded */
    if (vnc_client->sftp_filesystem)
        guac_common_ssh_destroy_sftp_filesystem(vnc_client->sftp_filesystem);

    /* Free SFTP session */
    if (vnc_client->sftp_session)
        guac_common_ssh_destroy_session(vnc_client->sftp_session);

    /* Free SFTP user */
    if (vnc_client->sftp_user)
        guac_common_ssh_destroy_user(vnc_client->sftp_user);

    guac_common_ssh_uninit();
#endif

    /* Clean up recording, if in progress */
    if (vnc_client->recording != NULL)
        guac_recording_free(vnc_client->recording);

    /* Free clipboard */
    if (vnc_client->clipboard != NULL)
        guac_common_clipboard_free(vnc_client->clipboard);

    /* Free display */
    if (vnc_client->display != NULL)
        guac_display_free(vnc_client->display);

#ifdef ENABLE_PULSE
    /* If audio enabled, stop streaming */
    if (vnc_client->audio)
        guac_pa_stream_free(vnc_client->audio);
#endif

    /* Free parsed settings */
    if (settings != NULL)
        guac_vnc_settings_free(settings);

#ifdef ENABLE_VNC_TLS_LOCKING
    /* Clean up TLS lock mutex. */
    pthread_mutex_destroy(&(vnc_client->tls_lock));
#endif

    /* Clean up the message lock. */
    pthread_mutex_destroy(&(vnc_client->message_lock));

    /* Free generic data struct */
    guac_mem_free(client->data);

    return 0;
}