ui/vdagent: split clipboard recv message handling

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20210805135715.857938-12-marcandre.lureau@redhat.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>

1 files changed, 89 insertions, 68 deletions

diff --git a/ui/vdagent.c b/ui/vdagent.c
index 3770c58..3620642 100644
--- a/ui/vdagent.c
+++ b/ui/vdagent.c
@@ -433,13 +433,94 @@ static void vdagent_clipboard_request(QemuClipboardInfo *info,
     vdagent_send_msg(vd, msg);
 }
 
+static void vdagent_clipboard_recv_grab(VDAgentChardev *vd, uint8_t s, uint32_t size, void *data)
+{
+    g_autoptr(QemuClipboardInfo) info = NULL;
+
+    trace_vdagent_cb_grab_selection(GET_NAME(sel_name, s));
+    info = qemu_clipboard_info_new(&vd->cbpeer, s);
+    if (size > sizeof(uint32_t) * 10) {
+        /*
+         * spice has 6 types as of 2021. Limiting to 10 entries
+         * so we we have some wiggle room.
+         */
+        return;
+    }
+    while (size >= sizeof(uint32_t)) {
+        trace_vdagent_cb_grab_type(GET_NAME(type_name, *(uint32_t *)data));
+        switch (*(uint32_t *)data) {
+        case VD_AGENT_CLIPBOARD_UTF8_TEXT:
+            info->types[QEMU_CLIPBOARD_TYPE_TEXT].available = true;
+            break;
+        default:
+            break;
+        }
+        data += sizeof(uint32_t);
+        size -= sizeof(uint32_t);
+    }
+    qemu_clipboard_update(info);
+}
+
+static void vdagent_clipboard_recv_request(VDAgentChardev *vd, uint8_t s, uint32_t size, void *data)
+{
+    QemuClipboardType type;
+
+    if (size < sizeof(uint32_t)) {
+        return;
+    }
+    switch (*(uint32_t *)data) {
+    case VD_AGENT_CLIPBOARD_UTF8_TEXT:
+        type = QEMU_CLIPBOARD_TYPE_TEXT;
+        break;
+    default:
+        return;
+    }
+    if (vd->cbinfo[s] && vd->cbinfo[s]->types[type].available &&
+        vd->cbinfo[s]->owner != &vd->cbpeer) {
+        if (vd->cbinfo[s]->types[type].data) {
+            vdagent_send_clipboard_data(vd, vd->cbinfo[s], type);
+        } else {
+            vd->cbpending[s] |= (1 << type);
+            qemu_clipboard_request(vd->cbinfo[s], type);
+        }
+    }
+}
+
+static void vdagent_clipboard_recv_data(VDAgentChardev *vd, uint8_t s, uint32_t size, void *data)
+{
+    QemuClipboardType type;
+
+    if (size < sizeof(uint32_t)) {
+        return;
+    }
+    switch (*(uint32_t *)data) {
+    case VD_AGENT_CLIPBOARD_UTF8_TEXT:
+        type = QEMU_CLIPBOARD_TYPE_TEXT;
+        break;
+    default:
+        return;
+    }
+    data += 4;
+    size -= 4;
+    qemu_clipboard_set_data(&vd->cbpeer, vd->cbinfo[s], type, size, data, true);
+}
+
+static void vdagent_clipboard_recv_release(VDAgentChardev *vd, uint8_t s)
+{
+    g_autoptr(QemuClipboardInfo) info = NULL;
+
+    if (vd->cbinfo[s] && vd->cbinfo[s]->owner == &vd->cbpeer) {
+        /* set empty clipboard info */
+        info = qemu_clipboard_info_new(NULL, s);
+        qemu_clipboard_update(info);
+    }
+}
+
 static void vdagent_chr_recv_clipboard(VDAgentChardev *vd, VDAgentMessage *msg)
 {
     uint8_t s = VD_AGENT_CLIPBOARD_SELECTION_CLIPBOARD;
     uint32_t size = msg->size;
     void *data = msg->data;
-    g_autoptr(QemuClipboardInfo) info = NULL;
-    QemuClipboardType type;
 
     if (have_selection(vd)) {
         if (size < 4) {
@@ -455,75 +536,15 @@ static void vdagent_chr_recv_clipboard(VDAgentChardev *vd, VDAgentMessage *msg)
 
     switch (msg->type) {
     case VD_AGENT_CLIPBOARD_GRAB:
-        trace_vdagent_cb_grab_selection(GET_NAME(sel_name, s));
-        info = qemu_clipboard_info_new(&vd->cbpeer, s);
-        if (size > sizeof(uint32_t) * 10) {
-            /*
-             * spice has 6 types as of 2021. Limiting to 10 entries
-             * so we we have some wiggle room.
-             */
-            return;
-        }
-        while (size >= sizeof(uint32_t)) {
-            trace_vdagent_cb_grab_type(GET_NAME(type_name, *(uint32_t *)data));
-            switch (*(uint32_t *)data) {
-            case VD_AGENT_CLIPBOARD_UTF8_TEXT:
-                info->types[QEMU_CLIPBOARD_TYPE_TEXT].available = true;
-                break;
-            default:
-                break;
-            }
-            data += sizeof(uint32_t);
-            size -= sizeof(uint32_t);
-        }
-        qemu_clipboard_update(info);
-        break;
+        return vdagent_clipboard_recv_grab(vd, s, size, data);
     case VD_AGENT_CLIPBOARD_REQUEST:
-        if (size < sizeof(uint32_t)) {
-            return;
-        }
-        switch (*(uint32_t *)data) {
-        case VD_AGENT_CLIPBOARD_UTF8_TEXT:
-            type = QEMU_CLIPBOARD_TYPE_TEXT;
-            break;
-        default:
-            return;
-        }
-        if (vd->cbinfo[s] &&
-            vd->cbinfo[s]->types[type].available &&
-            vd->cbinfo[s]->owner != &vd->cbpeer) {
-            if (vd->cbinfo[s]->types[type].data) {
-                vdagent_send_clipboard_data(vd, vd->cbinfo[s], type);
-            } else {
-                vd->cbpending[s] |= (1 << type);
-                qemu_clipboard_request(vd->cbinfo[s], type);
-            }
-        }
-        break;
+        return vdagent_clipboard_recv_request(vd, s, size, data);
     case VD_AGENT_CLIPBOARD: /* data */
-        if (size < sizeof(uint32_t)) {
-            return;
-        }
-        switch (*(uint32_t *)data) {
-        case VD_AGENT_CLIPBOARD_UTF8_TEXT:
-            type = QEMU_CLIPBOARD_TYPE_TEXT;
-            break;
-        default:
-            return;
-        }
-        data += 4;
-        size -= 4;
-        qemu_clipboard_set_data(&vd->cbpeer, vd->cbinfo[s], type,
-                                size, data, true);
-        break;
+        return vdagent_clipboard_recv_data(vd, s, size, data);
     case VD_AGENT_CLIPBOARD_RELEASE:
-        if (vd->cbinfo[s] &&
-            vd->cbinfo[s]->owner == &vd->cbpeer) {
-            /* set empty clipboard info */
-            info = qemu_clipboard_info_new(NULL, s);
-            qemu_clipboard_update(info);
-        }
-        break;
+        return vdagent_clipboard_recv_release(vd, s);
+    default:
+        g_assert_not_reached();
     }
 }