qemu

spice-app.c (7007B)

---

 /*
  * QEMU external Spice client display driver
  *
  * Copyright (c) 2018 Marc-André Lureau <marcandre.lureau@redhat.com>
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
  * in the Software without restriction, including without limitation the rights
  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  * copies of the Software, and to permit persons to whom the Software is
  * furnished to do so, subject to the following conditions:
  *
  * The above copyright notice and this permission notice shall be included in
  * all copies or substantial portions of the Software.
  *
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  * THE SOFTWARE.
  */
 
 #include "qemu/osdep.h"
 
 #include <gio/gio.h>
 
 #include "ui/console.h"
 #include "ui/spice-display.h"
 #include "qemu/config-file.h"
 #include "qemu/option.h"
 #include "qemu/cutils.h"
 #include "qemu/module.h"
 #include "qapi/error.h"
 #include "io/channel-command.h"
 #include "chardev/spice.h"
 #include "sysemu/sysemu.h"
 #include "qom/object.h"
 
 static const char *tmp_dir;
 static char *app_dir;
 static char *sock_path;
 
 struct VCChardev {
     SpiceChardev parent;
 };
 
 struct VCChardevClass {
     ChardevClass parent;
     void (*parent_open)(Chardev *chr, ChardevBackend *backend,
                         bool *be_opened, Error **errp);
 };
 
 #define TYPE_CHARDEV_VC "chardev-vc"
 OBJECT_DECLARE_TYPE(VCChardev, VCChardevClass, CHARDEV_VC)
 
 static ChardevBackend *
 chr_spice_backend_new(void)
 {
     ChardevBackend *be = g_new0(ChardevBackend, 1);
 
     be->type = CHARDEV_BACKEND_KIND_SPICEPORT;
     be->u.spiceport.data = g_new0(ChardevSpicePort, 1);
 
     return be;
 }
 
 static void vc_chr_open(Chardev *chr,
                         ChardevBackend *backend,
                         bool *be_opened,
                         Error **errp)
 {
     VCChardevClass *vc = CHARDEV_VC_GET_CLASS(chr);
     ChardevBackend *be;
     const char *fqdn = NULL;
 
     if (strstart(chr->label, "serial", NULL)) {
         fqdn = "org.qemu.console.serial.0";
     } else if (strstart(chr->label, "parallel", NULL)) {
         fqdn = "org.qemu.console.parallel.0";
     } else if (strstart(chr->label, "compat_monitor", NULL)) {
         fqdn = "org.qemu.monitor.hmp.0";
     }
 
     be = chr_spice_backend_new();
     be->u.spiceport.data->fqdn = fqdn ?
         g_strdup(fqdn) : g_strdup_printf("org.qemu.console.%s", chr->label);
     vc->parent_open(chr, be, be_opened, errp);
     qapi_free_ChardevBackend(be);
 }
 
 static void vc_chr_set_echo(Chardev *chr, bool echo)
 {
     /* TODO: set echo for frontends QMP and qtest */
 }
 
 static void char_vc_class_init(ObjectClass *oc, void *data)
 {
     VCChardevClass *vc = CHARDEV_VC_CLASS(oc);
     ChardevClass *cc = CHARDEV_CLASS(oc);
 
     vc->parent_open = cc->open;
 
     cc->parse = qemu_chr_parse_vc;
     cc->open = vc_chr_open;
     cc->chr_set_echo = vc_chr_set_echo;
 }
 
 static const TypeInfo char_vc_type_info = {
     .name = TYPE_CHARDEV_VC,
     .parent = TYPE_CHARDEV_SPICEPORT,
     .instance_size = sizeof(VCChardev),
     .class_init = char_vc_class_init,
     .class_size = sizeof(VCChardevClass),
 };
 
 static void spice_app_atexit(void)
 {
     if (sock_path) {
         unlink(sock_path);
     }
     if (tmp_dir) {
         rmdir(tmp_dir);
     }
     g_free(sock_path);
     g_free(app_dir);
 }
 
 static void spice_app_display_early_init(DisplayOptions *opts)
 {
     QemuOpts *qopts;
     QemuOptsList *list;
     GError *err = NULL;
 
     if (opts->has_full_screen) {
         error_report("spice-app full-screen isn't supported yet.");
         exit(1);
     }
     if (opts->has_window_close) {
         error_report("spice-app window-close isn't supported yet.");
         exit(1);
     }
 
     atexit(spice_app_atexit);
 
     if (qemu_name) {
         app_dir = g_build_filename(g_get_user_runtime_dir(),
                                    "qemu", qemu_name, NULL);
         if (g_mkdir_with_parents(app_dir, S_IRWXU) < -1) {
             error_report("Failed to create directory %s: %s",
                          app_dir, strerror(errno));
             exit(1);
         }
     } else {
         app_dir = g_dir_make_tmp(NULL, &err);
         tmp_dir = app_dir;
         if (err) {
             error_report("Failed to create temporary directory: %s",
                          err->message);
             exit(1);
         }
     }
     list = qemu_find_opts("spice");
     if (list == NULL) {
         error_report("spice-app missing spice support");
         exit(1);
     }
 
     type_register(&char_vc_type_info);
 
     sock_path = g_strjoin("", app_dir, "/", "spice.sock", NULL);
     qopts = qemu_opts_create(list, NULL, 0, &error_abort);
     qemu_opt_set(qopts, "disable-ticketing", "on", &error_abort);
     qemu_opt_set(qopts, "unix", "on", &error_abort);
     qemu_opt_set(qopts, "addr", sock_path, &error_abort);
     qemu_opt_set(qopts, "image-compression", "off", &error_abort);
     qemu_opt_set(qopts, "streaming-video", "off", &error_abort);
 #ifdef HAVE_SPICE_GL
     qemu_opt_set(qopts, "gl", opts->has_gl ? "on" : "off", &error_abort);
     display_opengl = opts->has_gl;
 #endif
 }
 
 static void spice_app_display_init(DisplayState *ds, DisplayOptions *opts)
 {
     ChardevBackend *be = chr_spice_backend_new();
     QemuOpts *qopts;
     GError *err = NULL;
     gchar *uri;
 
     be->u.spiceport.data->fqdn = g_strdup("org.qemu.monitor.qmp.0");
     qemu_chardev_new("org.qemu.monitor.qmp", TYPE_CHARDEV_SPICEPORT,
                      be, NULL, &error_abort);
     qopts = qemu_opts_create(qemu_find_opts("mon"),
                              NULL, 0, &error_fatal);
     qemu_opt_set(qopts, "chardev", "org.qemu.monitor.qmp", &error_abort);
     qemu_opt_set(qopts, "mode", "control", &error_abort);
 
     qapi_free_ChardevBackend(be);
     uri = g_strjoin("", "spice+unix://", app_dir, "/", "spice.sock", NULL);
     info_report("Launching display with URI: %s", uri);
     g_app_info_launch_default_for_uri(uri, NULL, &err);
     if (err) {
         error_report("Failed to launch %s URI: %s", uri, err->message);
         error_report("You need a capable Spice client, "
                      "such as virt-viewer 8.0");
         exit(1);
     }
     g_free(uri);
 }
 
 static QemuDisplay qemu_display_spice_app = {
     .type       = DISPLAY_TYPE_SPICE_APP,
     .early_init = spice_app_display_early_init,
     .init       = spice_app_display_init,
 };
 
 static void register_spice_app(void)
 {
     qemu_display_register(&qemu_display_spice_app);
 }
 
 type_init(register_spice_app);
 
 module_dep("ui-spice-core");
 module_dep("chardev-spice");