HelenOS sources

root/uspace/lib/display/src/disp_srv.c

DEFINITIONS

1. display_callback_create_srv
2. display_window_create_srv
3. display_window_destroy_srv
4. display_window_move_req_srv
5. display_window_move_srv
6. display_window_get_pos_srv
7. display_window_get_max_rect_srv
8. display_window_resize_req_srv
9. display_window_resize_srv
10. display_window_minimize_srv
11. display_window_maximize_srv
12. display_window_unmaximize_srv
13. display_window_set_cursor_srv
14. display_window_set_caption_srv
15. display_get_event_srv
16. display_get_info_srv
17. display_conn
18. display_srv_initialize
19. display_srv_ev_pending

/*
 * Copyright (c) 2023 Jiri Svoboda
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

/** @addtogroup libdisplay
 * @{
 */
/**
 * @file
 * @brief Display protocol server stub
 */

#include <disp_srv.h>
#include <display/event.h>
#include <display/info.h>
#include <display/wndresize.h>
#include <errno.h>
#include <io/log.h>
#include <ipc/display.h>
#include <mem.h>
#include <stdlib.h>
#include <stddef.h>
#include "../private/params.h"

static void display_callback_create_srv(display_srv_t *srv, ipc_call_t *call)
{
        async_sess_t *sess = async_callback_receive(EXCHANGE_SERIALIZE);
        if (sess == NULL) {
                async_answer_0(call, ENOMEM);
                return;
        }

        srv->client_sess = sess;
        async_answer_0(call, EOK);
}

static void display_window_create_srv(display_srv_t *srv, ipc_call_t *icall)
{
        sysarg_t wnd_id;
        ipc_call_t call;
        display_wnd_params_enc_t eparams;
        display_wnd_params_t params;
        char *caption;
        size_t size;
        errno_t rc;

        if (!async_data_write_receive(&call, &size)) {
                async_answer_0(&call, EREFUSED);
                async_answer_0(icall, EREFUSED);
                return;
        }

        if (size != sizeof(display_wnd_params_enc_t)) {
                async_answer_0(&call, EINVAL);
                async_answer_0(icall, EINVAL);
                return;
        }

        rc = async_data_write_finalize(&call, &eparams, size);
        if (rc != EOK) {
                async_answer_0(&call, rc);
                async_answer_0(icall, rc);
                return;
        }

        caption = calloc(eparams.caption_size + 1, 1);
        if (caption == NULL) {
                async_answer_0(icall, ENOMEM);
                return;
        }

        if (!async_data_write_receive(&call, &size)) {
                free(caption);
                async_answer_0(&call, EREFUSED);
                async_answer_0(icall, EREFUSED);
                return;
        }

        if (size != eparams.caption_size) {
                free(caption);
                async_answer_0(&call, EINVAL);
                async_answer_0(icall, EINVAL);
                return;
        }

        rc = async_data_write_finalize(&call, caption, eparams.caption_size);
        if (rc != EOK) {
                free(caption);
                async_answer_0(&call, rc);
                async_answer_0(icall, rc);
                return;
        }

        if (srv->ops->window_create == NULL) {
                free(caption);
                async_answer_0(icall, ENOTSUP);
                return;
        }

        /* Decode the parameters from transport */
        params.rect = eparams.rect;
        params.caption = caption;
        params.min_size = eparams.min_size;
        params.pos = eparams.pos;
        params.flags = eparams.flags;
        params.idev_id = eparams.idev_id;

        rc = srv->ops->window_create(srv->arg, &params, &wnd_id);
        async_answer_1(icall, rc, wnd_id);
}

static void display_window_destroy_srv(display_srv_t *srv, ipc_call_t *icall)
{
        sysarg_t wnd_id;
        errno_t rc;

        wnd_id = ipc_get_arg1(icall);

        if (srv->ops->window_destroy == NULL) {
                async_answer_0(icall, ENOTSUP);
                return;
        }

        rc = srv->ops->window_destroy(srv->arg, wnd_id);
        async_answer_0(icall, rc);
}

static void display_window_move_req_srv(display_srv_t *srv, ipc_call_t *icall)
{
        sysarg_t wnd_id;
        sysarg_t pos_id;
        ipc_call_t call;
        gfx_coord2_t pos;
        size_t size;
        errno_t rc;

        wnd_id = ipc_get_arg1(icall);
        pos_id = ipc_get_arg2(icall);

        if (!async_data_write_receive(&call, &size)) {
                async_answer_0(&call, EREFUSED);
                async_answer_0(icall, EREFUSED);
                return;
        }

        if (size != sizeof(gfx_coord2_t)) {
                async_answer_0(&call, EINVAL);
                async_answer_0(icall, EINVAL);
                return;
        }

        rc = async_data_write_finalize(&call, &pos, size);
        if (rc != EOK) {
                async_answer_0(&call, rc);
                async_answer_0(icall, rc);
                return;
        }

        if (srv->ops->window_move_req == NULL) {
                async_answer_0(icall, ENOTSUP);
                return;
        }

        rc = srv->ops->window_move_req(srv->arg, wnd_id, &pos, pos_id);
        async_answer_0(icall, rc);
}

static void display_window_move_srv(display_srv_t *srv, ipc_call_t *icall)
{
        sysarg_t wnd_id;
        ipc_call_t call;
        gfx_coord2_t dpos;
        size_t size;
        errno_t rc;

        wnd_id = ipc_get_arg1(icall);

        if (!async_data_write_receive(&call, &size)) {
                async_answer_0(&call, EREFUSED);
                async_answer_0(icall, EREFUSED);
                return;
        }

        if (size != sizeof(gfx_coord2_t)) {
                async_answer_0(&call, EINVAL);
                async_answer_0(icall, EINVAL);
                return;
        }

        rc = async_data_write_finalize(&call, &dpos, size);
        if (rc != EOK) {
                async_answer_0(&call, rc);
                async_answer_0(icall, rc);
                return;
        }

        if (srv->ops->window_move == NULL) {
                async_answer_0(icall, ENOTSUP);
                return;
        }

        rc = srv->ops->window_move(srv->arg, wnd_id, &dpos);
        async_answer_0(icall, rc);
}

static void display_window_get_pos_srv(display_srv_t *srv, ipc_call_t *icall)
{
        sysarg_t wnd_id;
        ipc_call_t call;
        gfx_coord2_t dpos;
        size_t size;
        errno_t rc;

        wnd_id = ipc_get_arg1(icall);

        if (srv->ops->window_get_pos == NULL) {
                async_answer_0(icall, ENOTSUP);
                return;
        }

        if (!async_data_read_receive(&call, &size)) {
                async_answer_0(&call, EREFUSED);
                async_answer_0(icall, EREFUSED);
                return;
        }

        rc = srv->ops->window_get_pos(srv->arg, wnd_id, &dpos);
        if (rc != EOK) {
                async_answer_0(&call, rc);
                async_answer_0(icall, rc);
                return;
        }

        if (size != sizeof(gfx_coord2_t)) {
                async_answer_0(&call, EINVAL);
                async_answer_0(icall, EINVAL);
                return;
        }

        rc = async_data_read_finalize(&call, &dpos, size);
        if (rc != EOK) {
                async_answer_0(&call, rc);
                async_answer_0(icall, rc);
                return;
        }

        async_answer_0(icall, EOK);
}

static void display_window_get_max_rect_srv(display_srv_t *srv,
    ipc_call_t *icall)
{
        sysarg_t wnd_id;
        ipc_call_t call;
        gfx_rect_t rect;
        size_t size;
        errno_t rc;

        wnd_id = ipc_get_arg1(icall);

        if (srv->ops->window_get_max_rect == NULL) {
                async_answer_0(icall, ENOTSUP);
                return;
        }

        if (!async_data_read_receive(&call, &size)) {
                async_answer_0(&call, EREFUSED);
                async_answer_0(icall, EREFUSED);
                return;
        }

        rc = srv->ops->window_get_max_rect(srv->arg, wnd_id, &rect);
        if (rc != EOK) {
                async_answer_0(&call, rc);
                async_answer_0(icall, rc);
                return;
        }

        if (size != sizeof(gfx_rect_t)) {
                async_answer_0(&call, EINVAL);
                async_answer_0(icall, EINVAL);
                return;
        }

        rc = async_data_read_finalize(&call, &rect, size);
        if (rc != EOK) {
                async_answer_0(&call, rc);
                async_answer_0(icall, rc);
                return;
        }

        async_answer_0(icall, EOK);
}

static void display_window_resize_req_srv(display_srv_t *srv, ipc_call_t *icall)
{
        sysarg_t wnd_id;
        ipc_call_t call;
        display_wnd_rsztype_t rsztype;
        gfx_coord2_t pos;
        sysarg_t pos_id;
        size_t size;
        errno_t rc;

        wnd_id = ipc_get_arg1(icall);
        rsztype = (display_wnd_rsztype_t) ipc_get_arg2(icall);
        pos_id = ipc_get_arg3(icall);

        if (!async_data_write_receive(&call, &size)) {
                async_answer_0(&call, EREFUSED);
                async_answer_0(icall, EREFUSED);
                return;
        }

        if (size != sizeof(gfx_coord2_t)) {
                async_answer_0(&call, EINVAL);
                async_answer_0(icall, EINVAL);
                return;
        }

        rc = async_data_write_finalize(&call, &pos, size);
        if (rc != EOK) {
                async_answer_0(&call, rc);
                async_answer_0(icall, rc);
                return;
        }

        if (srv->ops->window_resize_req == NULL) {
                async_answer_0(icall, ENOTSUP);
                return;
        }

        rc = srv->ops->window_resize_req(srv->arg, wnd_id, rsztype, &pos,
            pos_id);
        async_answer_0(icall, rc);
}

static void display_window_resize_srv(display_srv_t *srv, ipc_call_t *icall)
{
        sysarg_t wnd_id;
        ipc_call_t call;
        display_wnd_resize_t wresize;
        size_t size;
        errno_t rc;

        wnd_id = ipc_get_arg1(icall);

        if (!async_data_write_receive(&call, &size)) {
                async_answer_0(&call, EREFUSED);
                async_answer_0(icall, EREFUSED);
                return;
        }

        if (size != sizeof(display_wnd_resize_t)) {
                async_answer_0(&call, EINVAL);
                async_answer_0(icall, EINVAL);
                return;
        }

        rc = async_data_write_finalize(&call, &wresize, size);
        if (rc != EOK) {
                async_answer_0(&call, rc);
                async_answer_0(icall, rc);
                return;
        }

        if (srv->ops->window_resize == NULL) {
                async_answer_0(icall, ENOTSUP);
                return;
        }

        rc = srv->ops->window_resize(srv->arg, wnd_id, &wresize.offs,
            &wresize.nrect);
        async_answer_0(icall, rc);
}

static void display_window_minimize_srv(display_srv_t *srv, ipc_call_t *icall)
{
        sysarg_t wnd_id;
        errno_t rc;

        wnd_id = ipc_get_arg1(icall);

        if (srv->ops->window_minimize == NULL) {
                async_answer_0(icall, ENOTSUP);
                return;
        }

        rc = srv->ops->window_minimize(srv->arg, wnd_id);
        async_answer_0(icall, rc);
}

static void display_window_maximize_srv(display_srv_t *srv, ipc_call_t *icall)
{
        sysarg_t wnd_id;
        errno_t rc;

        wnd_id = ipc_get_arg1(icall);

        if (srv->ops->window_maximize == NULL) {
                async_answer_0(icall, ENOTSUP);
                return;
        }

        rc = srv->ops->window_maximize(srv->arg, wnd_id);
        async_answer_0(icall, rc);
}

static void display_window_unmaximize_srv(display_srv_t *srv, ipc_call_t *icall)
{
        sysarg_t wnd_id;
        errno_t rc;

        wnd_id = ipc_get_arg1(icall);

        if (srv->ops->window_unmaximize == NULL) {
                async_answer_0(icall, ENOTSUP);
                return;
        }

        rc = srv->ops->window_unmaximize(srv->arg, wnd_id);
        async_answer_0(icall, rc);
}

static void display_window_set_cursor_srv(display_srv_t *srv, ipc_call_t *icall)
{
        sysarg_t wnd_id;
        display_stock_cursor_t cursor;
        errno_t rc;

        wnd_id = ipc_get_arg1(icall);
        cursor = ipc_get_arg2(icall);

        if (srv->ops->window_set_cursor == NULL) {
                async_answer_0(icall, ENOTSUP);
                return;
        }

        rc = srv->ops->window_set_cursor(srv->arg, wnd_id, cursor);
        async_answer_0(icall, rc);
}

static void display_window_set_caption_srv(display_srv_t *srv,
    ipc_call_t *icall)
{
        sysarg_t wnd_id;
        ipc_call_t call;
        char *caption;
        size_t size;
        errno_t rc;

        wnd_id = ipc_get_arg1(icall);

        if (!async_data_write_receive(&call, &size)) {
                async_answer_0(&call, EREFUSED);
                async_answer_0(icall, EREFUSED);
                return;
        }

        caption = calloc(size + 1, 1);
        if (caption == NULL) {
                async_answer_0(&call, ENOMEM);
                async_answer_0(icall, ENOMEM);
                return;
        }

        rc = async_data_write_finalize(&call, caption, size);
        if (rc != EOK) {
                free(caption);
                async_answer_0(&call, rc);
                async_answer_0(icall, rc);
                return;
        }

        if (srv->ops->window_set_caption == NULL) {
                free(caption);
                async_answer_0(icall, ENOTSUP);
                return;
        }

        rc = srv->ops->window_set_caption(srv->arg, wnd_id, caption);
        async_answer_0(icall, rc);
        free(caption);
}

static void display_get_event_srv(display_srv_t *srv, ipc_call_t *icall)
{
        sysarg_t wnd_id;
        display_wnd_ev_t event;
        ipc_call_t call;
        size_t size;
        errno_t rc;

        if (srv->ops->get_event == NULL) {
                async_answer_0(icall, ENOTSUP);
                return;
        }

        rc = srv->ops->get_event(srv->arg, &wnd_id, &event);
        if (rc != EOK) {
                async_answer_0(icall, rc);
                return;
        }

        /* Transfer event data */
        if (!async_data_read_receive(&call, &size)) {
                async_answer_0(&call, EREFUSED);
                async_answer_0(icall, EREFUSED);
                return;
        }

        if (size != sizeof(event)) {
                async_answer_0(icall, EREFUSED);
                async_answer_0(&call, EREFUSED);
                return;
        }

        rc = async_data_read_finalize(&call, &event, sizeof(event));
        if (rc != EOK) {
                async_answer_0(icall, rc);
                async_answer_0(&call, rc);
                return;
        }

        async_answer_1(icall, EOK, wnd_id);
}

static void display_get_info_srv(display_srv_t *srv, ipc_call_t *icall)
{
        display_info_t info;
        ipc_call_t call;
        size_t size;
        errno_t rc;

        if (srv->ops->get_info == NULL) {
                async_answer_0(icall, ENOTSUP);
                return;
        }

        /* Transfer information */
        if (!async_data_read_receive(&call, &size)) {
                async_answer_0(&call, EREFUSED);
                async_answer_0(icall, EREFUSED);
                return;
        }

        if (size != sizeof(info)) {
                async_answer_0(icall, EREFUSED);
                async_answer_0(&call, EREFUSED);
                return;
        }

        rc = srv->ops->get_info(srv->arg, &info);
        if (rc != EOK) {
                async_answer_0(icall, rc);
                async_answer_0(&call, rc);
                return;
        }

        rc = async_data_read_finalize(&call, &info, sizeof(info));
        if (rc != EOK) {
                async_answer_0(icall, rc);
                async_answer_0(&call, rc);
                return;
        }

        async_answer_0(icall, EOK);
}

void display_conn(ipc_call_t *icall, display_srv_t *srv)
{
        /* Accept the connection */
        async_accept_0(icall);

        while (true) {
                ipc_call_t call;

                async_get_call(&call);
                sysarg_t method = ipc_get_imethod(&call);

                if (!method) {
                        /* The other side has hung up */
                        async_answer_0(&call, EOK);
                        break;
                }

                switch (method) {
                case DISPLAY_CALLBACK_CREATE:
                        display_callback_create_srv(srv, &call);
                        break;
                case DISPLAY_WINDOW_CREATE:
                        display_window_create_srv(srv, &call);
                        break;
                case DISPLAY_WINDOW_DESTROY:
                        display_window_destroy_srv(srv, &call);
                        break;
                case DISPLAY_WINDOW_MOVE_REQ:
                        display_window_move_req_srv(srv, &call);
                        break;
                case DISPLAY_WINDOW_MOVE:
                        display_window_move_srv(srv, &call);
                        break;
                case DISPLAY_WINDOW_GET_POS:
                        display_window_get_pos_srv(srv, &call);
                        break;
                case DISPLAY_WINDOW_GET_MAX_RECT:
                        display_window_get_max_rect_srv(srv, &call);
                        break;
                case DISPLAY_WINDOW_RESIZE_REQ:
                        display_window_resize_req_srv(srv, &call);
                        break;
                case DISPLAY_WINDOW_RESIZE:
                        display_window_resize_srv(srv, &call);
                        break;
                case DISPLAY_WINDOW_MINIMIZE:
                        display_window_minimize_srv(srv, &call);
                        break;
                case DISPLAY_WINDOW_MAXIMIZE:
                        display_window_maximize_srv(srv, &call);
                        break;
                case DISPLAY_WINDOW_UNMAXIMIZE:
                        display_window_unmaximize_srv(srv, &call);
                        break;
                case DISPLAY_WINDOW_SET_CURSOR:
                        display_window_set_cursor_srv(srv, &call);
                        break;
                case DISPLAY_WINDOW_SET_CAPTION:
                        display_window_set_caption_srv(srv, &call);
                        break;
                case DISPLAY_GET_EVENT:
                        display_get_event_srv(srv, &call);
                        break;
                case DISPLAY_GET_INFO:
                        display_get_info_srv(srv, &call);
                        break;
                default:
                        async_answer_0(&call, ENOTSUP);
                }
        }

        /* Hang up callback session */
        if (srv->client_sess != NULL) {
                async_hangup(srv->client_sess);
                srv->client_sess = NULL;
        }
}

/** Initialize display server structure
 *
 * @param srv Display server structure to initialize
 */
void display_srv_initialize(display_srv_t *srv)
{
        memset(srv, 0, sizeof(*srv));
}

/** Send 'pending' event to client.
 *
 * @param srv Display server structure
 */
void display_srv_ev_pending(display_srv_t *srv)
{
        async_exch_t *exch;

        exch = async_exchange_begin(srv->client_sess);
        async_msg_0(exch, DISPLAY_EV_PENDING);
        async_exchange_end(exch);
}

/** @}
 */