[Spice-devel] [PATCH spice-gtk v4 19/29] usb-redir: command-line option to create emulated CD drive

[Frediano Ziglio]

From: Yuri Benditovich <yuri.benditovich at daynix.com>

Added command-line option for sharing emulated CD devices.
It uses property interface of usb-device-manager to
create CD, this is a temporary solution until public API of
usb-device-manager defined for shared CD management from both
GUI and command line.

Signed-off-by: Yuri Benditovich <yuri.benditovich at daynix.com>
---
 src/spice-option.c       | 17 +++++++++++++++++
 src/usb-device-manager.c | 34 ++++++++++++++++++++++++++++++++++
 2 files changed, 51 insertions(+)

diff --git a/src/spice-option.c b/src/spice-option.c
index 8c4e707c..f0b3b5d6 100644
--- a/src/spice-option.c
+++ b/src/spice-option.c
@@ -32,6 +32,7 @@ static char *smartcard_db = NULL;
 static char *smartcard_certificates = NULL;
 static char *usbredir_auto_redirect_filter = NULL;
 static char *usbredir_redirect_on_connect = NULL;
+static gchar **cd_share_files = NULL;
 static gboolean smartcard = FALSE;
 static gboolean disable_audio = FALSE;
 static gboolean disable_usbredir = FALSE;
@@ -183,6 +184,9 @@ GOptionGroup* spice_get_option_group(void)
           N_("Filter selecting USB devices to be auto-redirected when plugged in"), N_("<filter-string>") },
         { "spice-usbredir-redirect-on-connect", '\0', 0, G_OPTION_ARG_STRING, &usbredir_redirect_on_connect,
           N_("Filter selecting USB devices to redirect on connect"), N_("<filter-string>") },
+        { "spice-share-cd", '\0', 0, G_OPTION_ARG_STRING_ARRAY, &cd_share_files,
+          N_("Name of ISO file or CD/DVD device to share; prefix '!' to delete on eject"),
+          N_("<filename> (repeat allowed)") },
         { "spice-cache-size", '\0', 0, G_OPTION_ARG_INT, &cache_size,
           N_("Image cache size (deprecated)"), N_("<bytes>") },
         { "spice-glz-window-size", '\0', 0, G_OPTION_ARG_INT, &glz_window_size,
@@ -288,6 +292,19 @@ void spice_set_session_option(SpiceSession *session)
                          usbredir_redirect_on_connect, NULL);
         }
     }
+    if (cd_share_files) {
+        SpiceUsbDeviceManager *m =
+                get_usb_device_manager_for_option(session, "--spice-share-cd");
+        if (m) {
+            gchar **name = cd_share_files;
+            while (name && *name) {
+                g_object_set(m, "share-cd", *name, NULL);
+                name++;
+            }
+        }
+        g_strfreev(cd_share_files);
+        cd_share_files = NULL;
+    }
     if (disable_usbredir)
         g_object_set(session, "enable-usbredir", FALSE, NULL);
     if (disable_audio)
diff --git a/src/usb-device-manager.c b/src/usb-device-manager.c
index 5834e032..187ccfa2 100644
--- a/src/usb-device-manager.c
+++ b/src/usb-device-manager.c
@@ -32,6 +32,7 @@
 #endif
 
 #include "channel-usbredir-priv.h"
+#include "usb-device-cd.h"
 #endif
 
 #include "spice-session-priv.h"
@@ -74,6 +75,7 @@ enum {
     PROP_AUTO_CONNECT_FILTER,
     PROP_REDIRECT_ON_CONNECT,
     PROP_FREE_CHANNELS,
+    PROP_SHARE_CD
 };
 
 enum
@@ -432,6 +434,26 @@ static void spice_usb_device_manager_set_property(GObject       *gobject,
         priv->redirect_on_connect = g_strdup(filter);
         break;
     }
+    case PROP_SHARE_CD:
+    {
+#ifdef USE_USBREDIR
+        CdEmulationParams param = { 0 };
+        const gchar *name = g_value_get_string(value);
+        /* the string is temporary, no need to keep it */
+        SPICE_DEBUG("share_cd set to %s", name);
+        if (name[0] == '!') {
+            name++;
+            param.delete_on_eject = 1;
+        }
+        param.filename = name;
+        GError *error = NULL;
+        if (!create_emulated_cd(priv->context, &param, &error)) {
+            g_warning(error->message);
+            g_error_free(error);
+        }
+#endif
+        break;
+    }
     default:
         G_OBJECT_WARN_INVALID_PROPERTY_ID(gobject, prop_id, pspec);
         break;
@@ -522,6 +544,18 @@ static void spice_usb_device_manager_class_init(SpiceUsbDeviceManagerClass *klas
     g_object_class_install_property(gobject_class, PROP_REDIRECT_ON_CONNECT,
                                     pspec);
 
+    /**
+    * SpiceUsbDeviceManager:share-cd:
+    *
+    * Set a string specifying a filename (ISO) or physical CD/DVD device
+    * to share via USB after a Spice connection has been established.
+    *
+    */
+    pspec = g_param_spec_string("share-cd", "Share ISO file or device as CD",
+        "File or device name to share", NULL,
+        G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
+    g_object_class_install_property(gobject_class, PROP_SHARE_CD, pspec);
+
     /**
      * SpiceUsbDeviceManager:free-channels:
      *
-- 
2.20.1