2 * QEMU VNC display driver -- clipboard support
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25 #include "qemu/osdep.h"
26 #include "qemu-common.h"
30 static uint8_t *inflate_buffer(uint8_t *in, uint32_t in_len, uint32_t *size)
39 uint8_t *out = g_malloc(out_len);
42 stream.next_out = out + stream.total_out;
43 stream.avail_out = out_len - stream.total_out;
45 ret = inflateInit(&stream);
50 while (stream.avail_in) {
51 ret = inflate(&stream, Z_FINISH);
58 if (out_len > (1 << 20)) {
61 out = g_realloc(out, out_len);
62 stream.next_out = out + stream.total_out;
63 stream.avail_out = out_len - stream.total_out;
70 *size = stream.total_out;
82 static uint8_t *deflate_buffer(uint8_t *in, uint32_t in_len, uint32_t *size)
91 uint8_t *out = g_malloc(out_len);
94 stream.next_out = out + stream.total_out;
95 stream.avail_out = out_len - stream.total_out;
97 ret = deflateInit(&stream, Z_DEFAULT_COMPRESSION);
102 while (ret != Z_STREAM_END) {
103 ret = deflate(&stream, Z_FINISH);
110 if (out_len > (1 << 20)) {
113 out = g_realloc(out, out_len);
114 stream.next_out = out + stream.total_out;
115 stream.avail_out = out_len - stream.total_out;
122 *size = stream.total_out;
134 static void vnc_clipboard_send(VncState *vs, uint32_t count, uint32_t *dwords)
139 vnc_write_u8(vs, VNC_MSG_SERVER_CUT_TEXT);
143 vnc_write_s32(vs, -(count * sizeof(uint32_t))); /* -(message length) */
144 for (i = 0; i < count; i++) {
145 vnc_write_u32(vs, dwords[i]);
147 vnc_unlock_output(vs);
151 static void vnc_clipboard_provide(VncState *vs,
152 QemuClipboardInfo *info,
153 QemuClipboardType type)
156 g_autofree uint8_t *buf = NULL;
157 g_autofree void *zbuf = NULL;
161 case QEMU_CLIPBOARD_TYPE_TEXT:
162 flags |= VNC_CLIPBOARD_TEXT;
167 flags |= VNC_CLIPBOARD_PROVIDE;
169 buf = g_malloc(info->types[type].size + 4);
170 buf[0] = (info->types[type].size >> 24) & 0xff;
171 buf[1] = (info->types[type].size >> 16) & 0xff;
172 buf[2] = (info->types[type].size >> 8) & 0xff;
173 buf[3] = (info->types[type].size >> 0) & 0xff;
174 memcpy(buf + 4, info->types[type].data, info->types[type].size);
175 zbuf = deflate_buffer(buf, info->types[type].size + 4, &zsize);
181 vnc_write_u8(vs, VNC_MSG_SERVER_CUT_TEXT);
185 vnc_write_s32(vs, -(sizeof(uint32_t) + zsize)); /* -(message length) */
186 vnc_write_u32(vs, flags);
187 vnc_write(vs, zbuf, zsize);
188 vnc_unlock_output(vs);
192 static void vnc_clipboard_update_info(VncState *vs, QemuClipboardInfo *info)
194 QemuClipboardType type;
195 bool self_update = info->owner == &vs->cbpeer;
198 if (info != vs->cbinfo) {
199 qemu_clipboard_info_unref(vs->cbinfo);
200 vs->cbinfo = qemu_clipboard_info_ref(info);
203 if (info->types[QEMU_CLIPBOARD_TYPE_TEXT].available) {
204 flags |= VNC_CLIPBOARD_TEXT;
206 flags |= VNC_CLIPBOARD_NOTIFY;
207 vnc_clipboard_send(vs, 1, &flags);
216 for (type = 0; type < QEMU_CLIPBOARD_TYPE__COUNT; type++) {
217 if (vs->cbpending & (1 << type)) {
218 vs->cbpending &= ~(1 << type);
219 vnc_clipboard_provide(vs, info, type);
224 static void vnc_clipboard_notify(Notifier *notifier, void *data)
226 VncState *vs = container_of(notifier, VncState, cbpeer.notifier);
227 QemuClipboardNotify *notify = data;
229 switch (notify->type) {
230 case QEMU_CLIPBOARD_UPDATE_INFO:
231 vnc_clipboard_update_info(vs, notify->info);
233 case QEMU_CLIPBOARD_RESET_SERIAL:
239 static void vnc_clipboard_request(QemuClipboardInfo *info,
240 QemuClipboardType type)
242 VncState *vs = container_of(info->owner, VncState, cbpeer);
245 if (type == QEMU_CLIPBOARD_TYPE_TEXT) {
246 flags |= VNC_CLIPBOARD_TEXT;
251 flags |= VNC_CLIPBOARD_REQUEST;
253 vnc_clipboard_send(vs, 1, &flags);
256 void vnc_client_cut_text_ext(VncState *vs, int32_t len, uint32_t flags, uint8_t *data)
258 if (flags & VNC_CLIPBOARD_CAPS) {
259 /* need store caps somewhere ? */
263 if (flags & VNC_CLIPBOARD_NOTIFY) {
264 QemuClipboardInfo *info =
265 qemu_clipboard_info_new(&vs->cbpeer, QEMU_CLIPBOARD_SELECTION_CLIPBOARD);
266 if (flags & VNC_CLIPBOARD_TEXT) {
267 info->types[QEMU_CLIPBOARD_TYPE_TEXT].available = true;
269 qemu_clipboard_update(info);
270 qemu_clipboard_info_unref(info);
274 if (flags & VNC_CLIPBOARD_PROVIDE &&
276 vs->cbinfo->owner == &vs->cbpeer) {
278 g_autofree uint8_t *buf = inflate_buffer(data, len - 4, &size);
279 if ((flags & VNC_CLIPBOARD_TEXT) &&
281 uint32_t tsize = read_u32(buf, 0);
282 uint8_t *tbuf = buf + 4;
284 qemu_clipboard_set_data(&vs->cbpeer, vs->cbinfo,
285 QEMU_CLIPBOARD_TYPE_TEXT,
291 if (flags & VNC_CLIPBOARD_REQUEST &&
293 vs->cbinfo->owner != &vs->cbpeer) {
294 if ((flags & VNC_CLIPBOARD_TEXT) &&
295 vs->cbinfo->types[QEMU_CLIPBOARD_TYPE_TEXT].available) {
296 if (vs->cbinfo->types[QEMU_CLIPBOARD_TYPE_TEXT].data) {
297 vnc_clipboard_provide(vs, vs->cbinfo, QEMU_CLIPBOARD_TYPE_TEXT);
299 vs->cbpending |= (1 << QEMU_CLIPBOARD_TYPE_TEXT);
300 qemu_clipboard_request(vs->cbinfo, QEMU_CLIPBOARD_TYPE_TEXT);
306 void vnc_client_cut_text(VncState *vs, size_t len, uint8_t *text)
308 QemuClipboardInfo *info =
309 qemu_clipboard_info_new(&vs->cbpeer, QEMU_CLIPBOARD_SELECTION_CLIPBOARD);
311 qemu_clipboard_set_data(&vs->cbpeer, info, QEMU_CLIPBOARD_TYPE_TEXT,
313 qemu_clipboard_info_unref(info);
316 void vnc_server_cut_text_caps(VncState *vs)
320 if (!vnc_has_feature(vs, VNC_FEATURE_CLIPBOARD_EXT)) {
324 caps[0] = (VNC_CLIPBOARD_PROVIDE |
325 VNC_CLIPBOARD_NOTIFY |
326 VNC_CLIPBOARD_REQUEST |
330 vnc_clipboard_send(vs, 2, caps);
332 if (!vs->cbpeer.notifier.notify) {
333 vs->cbpeer.name = "vnc";
334 vs->cbpeer.notifier.notify = vnc_clipboard_notify;
335 vs->cbpeer.request = vnc_clipboard_request;
336 qemu_clipboard_peer_register(&vs->cbpeer);