ui/spice-app.c

   1 /*
   2  * QEMU external Spice client display driver
   3  *
   4  * Copyright (c) 2018 Marc-André Lureau <marcandre.lureau@redhat.com>
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a copy
   7  * of this software and associated documentation files (the "Software"), to deal
   8  * in the Software without restriction, including without limitation the rights
   9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10  * copies of the Software, and to permit persons to whom the Software is
  11  * furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22  * THE SOFTWARE.
  23  */
  24 #include "qemu/osdep.h"
  25
  26 #include <gio/gio.h>
  27
  28 #include "qemu-common.h"
  29 #include "ui/console.h"
  30 #include "qemu/config-file.h"
  31 #include "qemu/option.h"
  32 #include "qemu/cutils.h"
  33 #include "qapi/error.h"
  34 #include "io/channel-command.h"
  35 #include "chardev/spice.h"
  36 #include "sysemu/sysemu.h"
  37
  38 static const char *tmp_dir;
  39 static char *app_dir;
  40 static char *sock_path;
  41
  42 typedef struct VCChardev {
  43     SpiceChardev parent;
  44 } VCChardev;
  45
  46 #define TYPE_CHARDEV_VC "chardev-vc"
  47 #define VC_CHARDEV(obj) OBJECT_CHECK(VCChardev, (obj), TYPE_CHARDEV_VC)
  48
  49 static ChardevBackend *
  50 chr_spice_backend_new(void)
  51 {
  52     ChardevBackend *be = g_new0(ChardevBackend, 1);
  53
  54     be->type = CHARDEV_BACKEND_KIND_SPICEPORT;
  55     be->u.spiceport.data = g_new0(ChardevSpicePort, 1);
  56
  57     return be;
  58 }
  59
  60 static void vc_chr_open(Chardev *chr,
  61                         ChardevBackend *backend,
  62                         bool *be_opened,
  63                         Error **errp)
  64 {
  65     ChardevBackend *be;
  66     const char *fqdn = NULL;
  67
  68     if (strstart(chr->label, "serial", NULL)) {
  69         fqdn = "org.qemu.console.serial.0";
  70     } else if (strstart(chr->label, "parallel", NULL)) {
  71         fqdn = "org.qemu.console.parallel.0";
  72     } else if (strstart(chr->label, "compat_monitor", NULL)) {
  73         fqdn = "org.qemu.monitor.hmp.0";
  74     }
  75
  76     be = chr_spice_backend_new();
  77     be->u.spiceport.data->fqdn = fqdn ?
  78         g_strdup(fqdn) : g_strdup_printf("org.qemu.console.%s", chr->label);
  79     qemu_chr_open_spice_port(chr, be, be_opened, errp);
  80     qapi_free_ChardevBackend(be);
  81 }
  82
  83 static void vc_chr_set_echo(Chardev *chr, bool echo)
  84 {
  85     /* TODO: set echo for frontends QMP and qtest */
  86 }
  87
  88 static void char_vc_class_init(ObjectClass *oc, void *data)
  89 {
  90     ChardevClass *cc = CHARDEV_CLASS(oc);
  91
  92     cc->parse = qemu_chr_parse_vc;
  93     cc->open = vc_chr_open;
  94     cc->chr_set_echo = vc_chr_set_echo;
  95 }
  96
  97 static const TypeInfo char_vc_type_info = {
  98     .name = TYPE_CHARDEV_VC,
  99     .parent = TYPE_CHARDEV_SPICEPORT,
 100     .instance_size = sizeof(VCChardev),
 101     .class_init = char_vc_class_init,
 102 };
 103
 104 static void spice_app_atexit(void)
 105 {
 106     if (sock_path) {
 107         unlink(sock_path);
 108     }
 109     if (tmp_dir) {
 110         rmdir(tmp_dir);
 111     }
 112     g_free(sock_path);
 113     g_free(app_dir);
 114 }
 115
 116 static void spice_app_display_early_init(DisplayOptions *opts)
 117 {
 118     QemuOpts *qopts;
 119     ChardevBackend *be = chr_spice_backend_new();
 120     GError *err = NULL;
 121
 122     if (opts->has_full_screen) {
 123         error_report("spice-app full-screen isn't supported yet.");
 124         exit(1);
 125     }
 126     if (opts->has_window_close) {
 127         error_report("spice-app window-close isn't supported yet.");
 128         exit(1);
 129     }
 130
 131     atexit(spice_app_atexit);
 132
 133     if (qemu_name) {
 134         app_dir = g_build_filename(g_get_user_runtime_dir(),
 135                                    "qemu", qemu_name, NULL);
 136         if (g_mkdir_with_parents(app_dir, S_IRWXU) < -1) {
 137             error_report("Failed to create directory %s: %s",
 138                          app_dir, strerror(errno));
 139             exit(1);
 140         }
 141     } else {
 142         app_dir = g_dir_make_tmp(NULL, &err);
 143         tmp_dir = app_dir;
 144         if (err) {
 145             error_report("Failed to create temporary directory: %s",
 146                          err->message);
 147             exit(1);
 148         }
 149     }
 150
 151     type_register(&char_vc_type_info);
 152
 153     sock_path = g_strjoin("", app_dir, "/", "spice.sock", NULL);
 154     qopts = qemu_opts_create(qemu_find_opts("spice"), NULL, 0, &error_abort);
 155     qemu_opt_set(qopts, "disable-ticketing", "on", &error_abort);
 156     qemu_opt_set(qopts, "unix", "on", &error_abort);
 157     qemu_opt_set(qopts, "addr", sock_path, &error_abort);
 158     qemu_opt_set(qopts, "image-compression", "off", &error_abort);
 159     qemu_opt_set(qopts, "streaming-video", "off", &error_abort);
 160     qemu_opt_set(qopts, "gl", opts->has_gl ? "on" : "off", &error_abort);
 161     display_opengl = opts->has_gl;
 162
 163     be->u.spiceport.data->fqdn = g_strdup("org.qemu.monitor.qmp.0");
 164     qemu_chardev_new("org.qemu.monitor.qmp", TYPE_CHARDEV_SPICEPORT,
 165                      be, NULL, &error_abort);
 166     qopts = qemu_opts_create(qemu_find_opts("mon"),
 167                              NULL, 0, &error_fatal);
 168     qemu_opt_set(qopts, "chardev", "org.qemu.monitor.qmp", &error_abort);
 169     qemu_opt_set(qopts, "mode", "control", &error_abort);
 170
 171     qapi_free_ChardevBackend(be);
 172 }
 173
 174 static void spice_app_display_init(DisplayState *ds, DisplayOptions *opts)
 175 {
 176     GError *err = NULL;
 177     gchar *uri;
 178
 179     uri = g_strjoin("", "spice+unix://", app_dir, "/", "spice.sock", NULL);
 180     info_report("Launching display with URI: %s", uri);
 181     g_app_info_launch_default_for_uri(uri, NULL, &err);
 182     if (err) {
 183         error_report("Failed to launch %s URI: %s", uri, err->message);
 184         error_report("You need a capable Spice client, "
 185                      "such as virt-viewer 8.0");
 186         exit(1);
 187     }
 188     g_free(uri);
 189 }
 190
 191 static QemuDisplay qemu_display_spice_app = {
 192     .type       = DISPLAY_TYPE_SPICE_APP,
 193     .early_init = spice_app_display_early_init,
 194     .init       = spice_app_display_init,
 195 };
 196
 197 static void register_spice_app(void)
 198 {
 199     qemu_display_register(&qemu_display_spice_app);
 200 }
 201
 202 type_init(register_spice_app);