VNC server (Anthony Liguori)
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1869 c046a42c-6fe2-441c-8c8c-71466251a162
diff --git a/vnc.c b/vnc.c
new file mode 100644
index 0000000..f461de6
--- /dev/null
+++ b/vnc.c
@@ -0,0 +1,894 @@
+#include "vl.h"
+
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <netinet/tcp.h>
+#include <fcntl.h>
+
+#define VNC_REFRESH_INTERVAL (1000 / 30)
+
+#include "vnc_keysym.h"
+#include "keymaps.c"
+
+typedef struct Buffer
+{
+ size_t capacity;
+ size_t offset;
+ char *buffer;
+} Buffer;
+
+typedef struct VncState VncState;
+
+typedef int VncReadEvent(VncState *vs, char *data, size_t len);
+
+struct VncState
+{
+ QEMUTimer *timer;
+ int lsock;
+ int csock;
+ DisplayState *ds;
+ int need_update;
+ int width;
+ int height;
+ uint64_t dirty_row[768];
+ char *old_data;
+ int depth;
+ int has_resize;
+ int has_hextile;
+ Buffer output;
+ Buffer input;
+ kbd_layout_t *kbd_layout;
+
+ VncReadEvent *read_handler;
+ size_t read_handler_expect;
+};
+
+/* TODO
+ 1) Get the queue working for IO.
+ 2) there is some weirdness when using the -S option (the screen is grey
+ and not totally invalidated
+ 3) resolutions > 1024
+*/
+
+static void vnc_write(VncState *vs, const void *data, size_t len);
+static void vnc_write_u32(VncState *vs, uint32_t value);
+static void vnc_write_s32(VncState *vs, int32_t value);
+static void vnc_write_u16(VncState *vs, uint16_t value);
+static void vnc_write_u8(VncState *vs, uint8_t value);
+static void vnc_flush(VncState *vs);
+static void vnc_update_client(void *opaque);
+static void vnc_client_read(void *opaque);
+
+static void vnc_dpy_update(DisplayState *ds, int x, int y, int w, int h)
+{
+ VncState *vs = ds->opaque;
+ int i;
+
+ h += y;
+
+ for (; y < h; y++)
+ for (i = 0; i < w; i += 16)
+ vs->dirty_row[y] |= (1ULL << ((x + i) / 16));
+}
+
+static void vnc_framebuffer_update(VncState *vs, int x, int y, int w, int h,
+ int32_t encoding)
+{
+ vnc_write_u16(vs, x);
+ vnc_write_u16(vs, y);
+ vnc_write_u16(vs, w);
+ vnc_write_u16(vs, h);
+
+ vnc_write_s32(vs, encoding);
+}
+
+static void vnc_dpy_resize(DisplayState *ds, int w, int h)
+{
+ VncState *vs = ds->opaque;
+
+ ds->data = realloc(ds->data, w * h * vs->depth);
+ vs->old_data = realloc(vs->old_data, w * h * vs->depth);
+
+ if (ds->data == NULL || vs->old_data == NULL) {
+ fprintf(stderr, "vnc: memory allocation failed\n");
+ exit(1);
+ }
+
+ ds->depth = vs->depth * 8;
+ ds->width = w;
+ ds->height = h;
+ ds->linesize = w * vs->depth;
+ if (vs->csock != -1 && vs->has_resize) {
+ vnc_write_u8(vs, 0); /* msg id */
+ vnc_write_u8(vs, 0);
+ vnc_write_u16(vs, 1); /* number of rects */
+ vnc_framebuffer_update(vs, 0, 0, ds->width, ds->height, -223);
+ vnc_flush(vs);
+ vs->width = ds->width;
+ vs->height = ds->height;
+ }
+}
+
+static void send_framebuffer_update_raw(VncState *vs, int x, int y, int w, int h)
+{
+ int i;
+ char *row;
+
+ vnc_framebuffer_update(vs, x, y, w, h, 0);
+
+ row = vs->ds->data + y * vs->ds->linesize + x * vs->depth;
+ for (i = 0; i < h; i++) {
+ vnc_write(vs, row, w * vs->depth);
+ row += vs->ds->linesize;
+ }
+}
+
+static void hextile_enc_cord(uint8_t *ptr, int x, int y, int w, int h)
+{
+ ptr[0] = ((x & 0x0F) << 4) | (y & 0x0F);
+ ptr[1] = (((w - 1) & 0x0F) << 4) | ((h - 1) & 0x0F);
+}
+
+#define BPP 8
+#include "vnchextile.h"
+#undef BPP
+
+#define BPP 16
+#include "vnchextile.h"
+#undef BPP
+
+#define BPP 32
+#include "vnchextile.h"
+#undef BPP
+
+static void send_framebuffer_update_hextile(VncState *vs, int x, int y, int w, int h)
+{
+ int i, j;
+ int has_fg, has_bg;
+ uint32_t last_fg32, last_bg32;
+ uint16_t last_fg16, last_bg16;
+ uint8_t last_fg8, last_bg8;
+
+ vnc_framebuffer_update(vs, x, y, w, h, 5);
+
+ has_fg = has_bg = 0;
+ for (j = y; j < (y + h); j += 16) {
+ for (i = x; i < (x + w); i += 16) {
+ switch (vs->depth) {
+ case 1:
+ send_hextile_tile_8(vs, i, j, MIN(16, x + w - i), MIN(16, y + h - j),
+ &last_bg8, &last_fg8, &has_bg, &has_fg);
+ break;
+ case 2:
+ send_hextile_tile_16(vs, i, j, MIN(16, x + w - i), MIN(16, y + h - j),
+ &last_bg16, &last_fg16, &has_bg, &has_fg);
+ break;
+ case 4:
+ send_hextile_tile_32(vs, i, j, MIN(16, x + w - i), MIN(16, y + h - j),
+ &last_bg32, &last_fg32, &has_bg, &has_fg);
+ break;
+ default:
+ break;
+ }
+ }
+ }
+}
+
+static void send_framebuffer_update(VncState *vs, int x, int y, int w, int h)
+{
+ if (vs->has_hextile)
+ send_framebuffer_update_hextile(vs, x, y, w, h);
+ else
+ send_framebuffer_update_raw(vs, x, y, w, h);
+}
+
+static void vnc_copy(DisplayState *ds, int src_x, int src_y, int dst_x, int dst_y, int w, int h)
+{
+ int src, dst;
+ char *src_row;
+ char *dst_row;
+ char *old_row;
+ int y = 0;
+ int pitch = ds->linesize;
+ VncState *vs = ds->opaque;
+
+ vnc_update_client(vs);
+
+ if (dst_y > src_y) {
+ y = h - 1;
+ pitch = -pitch;
+ }
+
+ src = (ds->linesize * (src_y + y) + vs->depth * src_x);
+ dst = (ds->linesize * (dst_y + y) + vs->depth * dst_x);
+
+ src_row = ds->data + src;
+ dst_row = ds->data + dst;
+ old_row = vs->old_data + dst;
+
+ for (y = 0; y < h; y++) {
+ memmove(old_row, src_row, w * vs->depth);
+ memmove(dst_row, src_row, w * vs->depth);
+ src_row += pitch;
+ dst_row += pitch;
+ old_row += pitch;
+ }
+
+ vnc_write_u8(vs, 0); /* msg id */
+ vnc_write_u8(vs, 0);
+ vnc_write_u16(vs, 1); /* number of rects */
+ vnc_framebuffer_update(vs, dst_x, dst_y, w, h, 1);
+ vnc_write_u16(vs, src_x);
+ vnc_write_u16(vs, src_y);
+ vnc_flush(vs);
+}
+
+static int find_dirty_height(VncState *vs, int y, int last_x, int x)
+{
+ int h;
+
+ for (h = 1; h < (vs->height - y); h++) {
+ int tmp_x;
+ if (!(vs->dirty_row[y + h] & (1ULL << last_x)))
+ break;
+ for (tmp_x = last_x; tmp_x < x; tmp_x++)
+ vs->dirty_row[y + h] &= ~(1ULL << tmp_x);
+ }
+
+ return h;
+}
+
+static void vnc_update_client(void *opaque)
+{
+ VncState *vs = opaque;
+
+ if (vs->need_update && vs->csock != -1) {
+ int y;
+ char *row;
+ char *old_row;
+ uint64_t width_mask;
+ int n_rectangles;
+ int saved_offset;
+ int has_dirty = 0;
+
+ width_mask = (1ULL << (vs->width / 16)) - 1;
+
+ if (vs->width == 1024)
+ width_mask = ~(0ULL);
+
+ /* Walk through the dirty map and eliminate tiles that
+ really aren't dirty */
+ row = vs->ds->data;
+ old_row = vs->old_data;
+
+ for (y = 0; y < vs->height; y++) {
+ if (vs->dirty_row[y] & width_mask) {
+ int x;
+ char *ptr, *old_ptr;
+
+ ptr = row;
+ old_ptr = old_row;
+
+ for (x = 0; x < vs->ds->width; x += 16) {
+ if (memcmp(old_ptr, ptr, 16 * vs->depth) == 0) {
+ vs->dirty_row[y] &= ~(1ULL << (x / 16));
+ } else {
+ has_dirty = 1;
+ memcpy(old_ptr, ptr, 16 * vs->depth);
+ }
+
+ ptr += 16 * vs->depth;
+ old_ptr += 16 * vs->depth;
+ }
+ }
+
+ row += vs->ds->linesize;
+ old_row += vs->ds->linesize;
+ }
+
+ if (!has_dirty) {
+ qemu_mod_timer(vs->timer, qemu_get_clock(rt_clock) + VNC_REFRESH_INTERVAL);
+ return;
+ }
+
+ /* Count rectangles */
+ n_rectangles = 0;
+ vnc_write_u8(vs, 0); /* msg id */
+ vnc_write_u8(vs, 0);
+ saved_offset = vs->output.offset;
+ vnc_write_u16(vs, 0);
+
+ for (y = 0; y < vs->height; y++) {
+ int x;
+ int last_x = -1;
+ for (x = 0; x < vs->width / 16; x++) {
+ if (vs->dirty_row[y] & (1ULL << x)) {
+ if (last_x == -1) {
+ last_x = x;
+ }
+ vs->dirty_row[y] &= ~(1ULL << x);
+ } else {
+ if (last_x != -1) {
+ int h = find_dirty_height(vs, y, last_x, x);
+ send_framebuffer_update(vs, last_x * 16, y, (x - last_x) * 16, h);
+ n_rectangles++;
+ }
+ last_x = -1;
+ }
+ }
+ if (last_x != -1) {
+ int h = find_dirty_height(vs, y, last_x, x);
+ send_framebuffer_update(vs, last_x * 16, y, (x - last_x) * 16, h);
+ n_rectangles++;
+ }
+ }
+ vs->output.buffer[saved_offset] = (n_rectangles >> 8) & 0xFF;
+ vs->output.buffer[saved_offset + 1] = n_rectangles & 0xFF;
+ vnc_flush(vs);
+
+ }
+ qemu_mod_timer(vs->timer, qemu_get_clock(rt_clock) + VNC_REFRESH_INTERVAL);
+}
+
+static void vnc_timer_init(VncState *vs)
+{
+ if (vs->timer == NULL) {
+ vs->timer = qemu_new_timer(rt_clock, vnc_update_client, vs);
+ qemu_mod_timer(vs->timer, qemu_get_clock(rt_clock));
+ }
+}
+
+static void vnc_dpy_refresh(DisplayState *ds)
+{
+ VncState *vs = ds->opaque;
+ vnc_timer_init(vs);
+ vga_hw_update();
+}
+
+static int vnc_listen_poll(void *opaque)
+{
+ VncState *vs = opaque;
+ if (vs->csock == -1)
+ return 1;
+ return 0;
+}
+
+static void buffer_reserve(Buffer *buffer, size_t len)
+{
+ if ((buffer->capacity - buffer->offset) < len) {
+ buffer->capacity += (len + 1024);
+ buffer->buffer = realloc(buffer->buffer, buffer->capacity);
+ if (buffer->buffer == NULL) {
+ fprintf(stderr, "vnc: out of memory\n");
+ exit(1);
+ }
+ }
+}
+
+static int buffer_empty(Buffer *buffer)
+{
+ return buffer->offset == 0;
+}
+
+static char *buffer_end(Buffer *buffer)
+{
+ return buffer->buffer + buffer->offset;
+}
+
+static void buffer_reset(Buffer *buffer)
+{
+ buffer->offset = 0;
+}
+
+static void buffer_append(Buffer *buffer, const void *data, size_t len)
+{
+ memcpy(buffer->buffer + buffer->offset, data, len);
+ buffer->offset += len;
+}
+
+static int vnc_client_io_error(VncState *vs, int ret)
+{
+ if (ret == 0 || ret == -1) {
+ if (ret == -1 && (errno == EINTR || errno == EAGAIN))
+ return 0;
+
+ qemu_set_fd_handler2(vs->csock, NULL, NULL, NULL, NULL);
+ close(vs->csock);
+ vs->csock = -1;
+ buffer_reset(&vs->input);
+ buffer_reset(&vs->output);
+ vs->need_update = 0;
+ return 0;
+ }
+ return ret;
+}
+
+static void vnc_client_error(VncState *vs)
+{
+ errno = EINVAL;
+ vnc_client_io_error(vs, -1);
+}
+
+static void vnc_client_write(void *opaque)
+{
+ ssize_t ret;
+ VncState *vs = opaque;
+
+ ret = write(vs->csock, vs->output.buffer, vs->output.offset);
+ ret = vnc_client_io_error(vs, ret);
+ if (!ret)
+ return;
+
+ memmove(vs->output.buffer, vs->output.buffer + ret, (vs->output.offset - ret));
+ vs->output.offset -= ret;
+
+ if (vs->output.offset == 0) {
+ qemu_set_fd_handler2(vs->csock, NULL, vnc_client_read, NULL, vs);
+ }
+}
+
+static void vnc_read_when(VncState *vs, VncReadEvent *func, size_t expecting)
+{
+ vs->read_handler = func;
+ vs->read_handler_expect = expecting;
+}
+
+static void vnc_client_read(void *opaque)
+{
+ VncState *vs = opaque;
+ ssize_t ret;
+
+ buffer_reserve(&vs->input, 4096);
+
+ ret = read(vs->csock, buffer_end(&vs->input), 4096);
+ ret = vnc_client_io_error(vs, ret);
+ if (!ret)
+ return;
+
+ vs->input.offset += ret;
+
+ while (vs->read_handler && vs->input.offset >= vs->read_handler_expect) {
+ size_t len = vs->read_handler_expect;
+ int ret;
+
+ ret = vs->read_handler(vs, vs->input.buffer, len);
+ if (vs->csock == -1)
+ return;
+
+ if (!ret) {
+ memmove(vs->input.buffer, vs->input.buffer + len, (vs->input.offset - len));
+ vs->input.offset -= len;
+ } else {
+ vs->read_handler_expect = ret;
+ }
+ }
+}
+
+static void vnc_write(VncState *vs, const void *data, size_t len)
+{
+ buffer_reserve(&vs->output, len);
+
+ if (buffer_empty(&vs->output)) {
+ qemu_set_fd_handler2(vs->csock, NULL, vnc_client_read, vnc_client_write, vs);
+ }
+
+ buffer_append(&vs->output, data, len);
+}
+
+static void vnc_write_s32(VncState *vs, int32_t value)
+{
+ vnc_write_u32(vs, *(uint32_t *)&value);
+}
+
+static void vnc_write_u32(VncState *vs, uint32_t value)
+{
+ uint8_t buf[4];
+
+ buf[0] = (value >> 24) & 0xFF;
+ buf[1] = (value >> 16) & 0xFF;
+ buf[2] = (value >> 8) & 0xFF;
+ buf[3] = value & 0xFF;
+
+ vnc_write(vs, buf, 4);
+}
+
+static void vnc_write_u16(VncState *vs, uint16_t value)
+{
+ char buf[2];
+
+ buf[0] = (value >> 8) & 0xFF;
+ buf[1] = value & 0xFF;
+
+ vnc_write(vs, buf, 2);
+}
+
+static void vnc_write_u8(VncState *vs, uint8_t value)
+{
+ vnc_write(vs, (char *)&value, 1);
+}
+
+static void vnc_flush(VncState *vs)
+{
+ if (vs->output.offset)
+ vnc_client_write(vs);
+}
+
+static uint8_t read_u8(char *data, size_t offset)
+{
+ return data[offset];
+}
+
+static uint16_t read_u16(char *data, size_t offset)
+{
+ return ((data[offset] & 0xFF) << 8) | (data[offset + 1] & 0xFF);
+}
+
+static int32_t read_s32(char *data, size_t offset)
+{
+ return (int32_t)((data[offset] << 24) | (data[offset + 1] << 16) |
+ (data[offset + 2] << 8) | data[offset + 3]);
+}
+
+static uint32_t read_u32(char *data, size_t offset)
+{
+ return ((data[offset] << 24) | (data[offset + 1] << 16) |
+ (data[offset + 2] << 8) | data[offset + 3]);
+}
+
+static void client_cut_text(VncState *vs, size_t len, char *text)
+{
+}
+
+static void pointer_event(VncState *vs, int button_mask, int x, int y)
+{
+ int buttons = 0;
+ int dz = 0;
+
+ if (button_mask & 0x01)
+ buttons |= MOUSE_EVENT_LBUTTON;
+ if (button_mask & 0x02)
+ buttons |= MOUSE_EVENT_MBUTTON;
+ if (button_mask & 0x04)
+ buttons |= MOUSE_EVENT_RBUTTON;
+ if (button_mask & 0x08)
+ dz = -1;
+ if (button_mask & 0x10)
+ dz = 1;
+
+ if (kbd_mouse_is_absolute()) {
+ kbd_mouse_event(x * 0x7FFF / vs->ds->width,
+ y * 0x7FFF / vs->ds->height,
+ dz, buttons);
+ } else {
+ static int last_x = -1;
+ static int last_y = -1;
+
+ if (last_x != -1)
+ kbd_mouse_event(x - last_x, y - last_y, dz, buttons);
+
+ last_x = x;
+ last_y = y;
+ }
+}
+
+static void key_event(VncState *vs, int down, uint32_t sym)
+{
+ int keycode;
+
+ keycode = keysym2scancode(vs->kbd_layout, sym & 0xFFFF);
+
+ if (keycode & 0x80)
+ kbd_put_keycode(0xe0);
+ if (down)
+ kbd_put_keycode(keycode & 0x7f);
+ else
+ kbd_put_keycode(keycode | 0x80);
+}
+
+static void framebuffer_update_request(VncState *vs, int incremental,
+ int x_position, int y_position,
+ int w, int h)
+{
+ int i;
+ vs->need_update = 1;
+ if (!incremental) {
+ char *old_row = vs->old_data + y_position * vs->ds->linesize;
+
+ for (i = 0; i < h; i++) {
+ vs->dirty_row[y_position + i] = (1ULL << (vs->ds->width / 16)) - 1;
+ if (vs->ds->width == 1024) {
+ vs->dirty_row[y_position + i] = ~(0ULL);
+ }
+ memset(old_row, 42, vs->ds->width * vs->depth);
+ old_row += vs->ds->linesize;
+ }
+ }
+}
+
+static void set_encodings(VncState *vs, int32_t *encodings, size_t n_encodings)
+{
+ int i;
+
+ vs->has_hextile = 0;
+ vs->has_resize = 0;
+ vs->ds->dpy_copy = NULL;
+
+ for (i = n_encodings - 1; i >= 0; i--) {
+ switch (encodings[i]) {
+ case 0: /* Raw */
+ vs->has_hextile = 0;
+ break;
+ case 1: /* CopyRect */
+ vs->ds->dpy_copy = vnc_copy;
+ break;
+ case 5: /* Hextile */
+ vs->has_hextile = 1;
+ break;
+ case -223: /* DesktopResize */
+ vs->has_resize = 1;
+ break;
+ default:
+ break;
+ }
+ }
+}
+
+static void set_pixel_format(VncState *vs,
+ int bits_per_pixel, int depth,
+ int big_endian_flag, int true_color_flag,
+ int red_max, int green_max, int blue_max,
+ int red_shift, int green_shift, int blue_shift)
+{
+ switch (bits_per_pixel) {
+ case 32:
+ case 24:
+ vs->depth = 4;
+ break;
+ case 16:
+ vs->depth = 2;
+ break;
+ case 8:
+ vs->depth = 1;
+ break;
+ default:
+ vnc_client_error(vs);
+ break;
+ }
+
+ if (!true_color_flag)
+ vnc_client_error(vs);
+
+ vnc_dpy_resize(vs->ds, vs->ds->width, vs->ds->height);
+ memset(vs->dirty_row, 0xFF, sizeof(vs->dirty_row));
+ memset(vs->old_data, 42, vs->ds->linesize * vs->ds->height);
+
+ vga_hw_invalidate();
+ vga_hw_update();
+}
+
+static int protocol_client_msg(VncState *vs, char *data, size_t len)
+{
+ int i;
+ uint16_t limit;
+
+ switch (data[0]) {
+ case 0:
+ if (len == 1)
+ return 20;
+
+ set_pixel_format(vs, read_u8(data, 4), read_u8(data, 5),
+ read_u8(data, 6), read_u8(data, 7),
+ read_u16(data, 8), read_u16(data, 10),
+ read_u16(data, 12), read_u8(data, 14),
+ read_u8(data, 15), read_u8(data, 16));
+ break;
+ case 2:
+ if (len == 1)
+ return 4;
+
+ if (len == 4)
+ return 4 + (read_u16(data, 2) * 4);
+
+ limit = read_u16(data, 2);
+ for (i = 0; i < limit; i++) {
+ int32_t val = read_s32(data, 4 + (i * 4));
+ memcpy(data + 4 + (i * 4), &val, sizeof(val));
+ }
+
+ set_encodings(vs, (int32_t *)(data + 4), limit);
+ break;
+ case 3:
+ if (len == 1)
+ return 10;
+
+ framebuffer_update_request(vs,
+ read_u8(data, 1), read_u16(data, 2), read_u16(data, 4),
+ read_u16(data, 6), read_u16(data, 8));
+ break;
+ case 4:
+ if (len == 1)
+ return 8;
+
+ key_event(vs, read_u8(data, 1), read_u32(data, 4));
+ break;
+ case 5:
+ if (len == 1)
+ return 6;
+
+ pointer_event(vs, read_u8(data, 1), read_u16(data, 2), read_u16(data, 4));
+ break;
+ case 6:
+ if (len == 1)
+ return 8;
+
+ if (len == 8)
+ return 8 + read_u32(data, 4);
+
+ client_cut_text(vs, read_u32(data, 4), data + 8);
+ break;
+ default:
+ printf("Msg: %d\n", data[0]);
+ vnc_client_error(vs);
+ break;
+ }
+
+ vnc_read_when(vs, protocol_client_msg, 1);
+ return 0;
+}
+
+static int protocol_client_init(VncState *vs, char *data, size_t len)
+{
+ char pad[3] = { 0, 0, 0 };
+
+ vs->width = vs->ds->width;
+ vs->height = vs->ds->height;
+ vnc_write_u16(vs, vs->ds->width);
+ vnc_write_u16(vs, vs->ds->height);
+
+ vnc_write_u8(vs, vs->depth * 8); /* bits-per-pixel */
+ vnc_write_u8(vs, vs->depth * 8); /* depth */
+ vnc_write_u8(vs, 0); /* big-endian-flag */
+ vnc_write_u8(vs, 1); /* true-color-flag */
+ if (vs->depth == 4) {
+ vnc_write_u16(vs, 0xFF); /* red-max */
+ vnc_write_u16(vs, 0xFF); /* green-max */
+ vnc_write_u16(vs, 0xFF); /* blue-max */
+ vnc_write_u8(vs, 16); /* red-shift */
+ vnc_write_u8(vs, 8); /* green-shift */
+ vnc_write_u8(vs, 0); /* blue-shift */
+ } else if (vs->depth == 2) {
+ vnc_write_u16(vs, 31); /* red-max */
+ vnc_write_u16(vs, 63); /* green-max */
+ vnc_write_u16(vs, 31); /* blue-max */
+ vnc_write_u8(vs, 11); /* red-shift */
+ vnc_write_u8(vs, 5); /* green-shift */
+ vnc_write_u8(vs, 0); /* blue-shift */
+ } else if (vs->depth == 1) {
+ vnc_write_u16(vs, 3); /* red-max */
+ vnc_write_u16(vs, 7); /* green-max */
+ vnc_write_u16(vs, 3); /* blue-max */
+ vnc_write_u8(vs, 5); /* red-shift */
+ vnc_write_u8(vs, 2); /* green-shift */
+ vnc_write_u8(vs, 0); /* blue-shift */
+ }
+
+ vnc_write(vs, pad, 3); /* padding */
+
+ vnc_write_u32(vs, 4);
+ vnc_write(vs, "QEMU", 4);
+ vnc_flush(vs);
+
+ vnc_read_when(vs, protocol_client_msg, 1);
+
+ return 0;
+}
+
+static int protocol_version(VncState *vs, char *version, size_t len)
+{
+ char local[13];
+ int maj, min;
+
+ memcpy(local, version, 12);
+ local[12] = 0;
+
+ if (sscanf(local, "RFB %03d.%03d\n", &maj, &min) != 2) {
+ vnc_client_error(vs);
+ return 0;
+ }
+
+ vnc_write_u32(vs, 1); /* None */
+ vnc_flush(vs);
+
+ vnc_read_when(vs, protocol_client_init, 1);
+
+ return 0;
+}
+
+static void vnc_listen_read(void *opaque)
+{
+ VncState *vs = opaque;
+ struct sockaddr_in addr;
+ socklen_t addrlen = sizeof(addr);
+
+ vs->csock = accept(vs->lsock, (struct sockaddr *)&addr, &addrlen);
+ if (vs->csock != -1) {
+ fcntl(vs->csock, F_SETFL, O_NONBLOCK);
+ qemu_set_fd_handler2(vs->csock, NULL, vnc_client_read, NULL, opaque);
+ vnc_write(vs, "RFB 003.003\n", 12);
+ vnc_flush(vs);
+ vnc_read_when(vs, protocol_version, 12);
+ memset(vs->old_data, 0, vs->ds->linesize * vs->ds->height);
+ memset(vs->dirty_row, 0xFF, sizeof(vs->dirty_row));
+ vs->has_resize = 0;
+ vs->has_hextile = 0;
+ vs->ds->dpy_copy = NULL;
+ }
+}
+
+void vnc_display_init(DisplayState *ds, int display)
+{
+ struct sockaddr_in addr;
+ int reuse_addr, ret;
+ VncState *vs;
+
+ vs = qemu_mallocz(sizeof(VncState));
+ if (!vs)
+ exit(1);
+
+ ds->opaque = vs;
+
+ vs->lsock = -1;
+ vs->csock = -1;
+ vs->depth = 4;
+
+ vs->ds = ds;
+
+ if (!keyboard_layout)
+ keyboard_layout = "en-us";
+
+ vs->kbd_layout = init_keyboard_layout(keyboard_layout);
+ if (!vs->kbd_layout)
+ exit(1);
+
+ vs->lsock = socket(PF_INET, SOCK_STREAM, 0);
+ if (vs->lsock == -1) {
+ fprintf(stderr, "Could not create socket\n");
+ exit(1);
+ }
+
+ addr.sin_family = AF_INET;
+ addr.sin_port = htons(5900 + display);
+ memset(&addr.sin_addr, 0, sizeof(addr.sin_addr));
+
+ reuse_addr = 1;
+ ret = setsockopt(vs->lsock, SOL_SOCKET, SO_REUSEADDR,
+ &reuse_addr, sizeof(reuse_addr));
+ if (ret == -1) {
+ fprintf(stderr, "setsockopt() failed\n");
+ exit(1);
+ }
+
+ if (bind(vs->lsock, (struct sockaddr *)&addr, sizeof(addr)) == -1) {
+ fprintf(stderr, "bind() failed\n");
+ exit(1);
+ }
+
+ if (listen(vs->lsock, 1) == -1) {
+ fprintf(stderr, "listen() failed\n");
+ exit(1);
+ }
+
+ ret = qemu_set_fd_handler2(vs->lsock, vnc_listen_poll, vnc_listen_read, NULL, vs);
+ if (ret == -1) {
+ exit(1);
+ }
+
+ vs->ds->data = NULL;
+ vs->ds->dpy_update = vnc_dpy_update;
+ vs->ds->dpy_resize = vnc_dpy_resize;
+ vs->ds->dpy_refresh = vnc_dpy_refresh;
+
+ memset(vs->dirty_row, 0xFF, sizeof(vs->dirty_row));
+
+ vnc_dpy_resize(vs->ds, 640, 400);
+}
