2 * QEMU VNC display driver
4 * Copyright (C) 2006 Anthony Liguori <anthony@codemonkey.ws>
5 * Copyright (C) 2006 Fabrice Bellard
7 * Permission is hereby granted, free of charge, to any person obtaining a copy
8 * of this software and associated documentation files (the "Software"), to deal
9 * in the Software without restriction, including without limitation the rights
10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
11 * copies of the Software, and to permit persons to whom the Software is
12 * furnished to do so, subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included in
15 * all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
27 #include "qemu_socket.h"
29 #define VNC_REFRESH_INTERVAL (1000 / 30)
31 #include "vnc_keysym.h"
36 #include <gnutls/gnutls.h>
37 #include <gnutls/x509.h>
38 #endif /* CONFIG_VNC_TLS */
40 // #define _VNC_DEBUG 1
43 #define VNC_DEBUG(fmt, ...) do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0)
45 #if CONFIG_VNC_TLS && _VNC_DEBUG >= 2
46 /* Very verbose, so only enabled for _VNC_DEBUG >= 2 */
47 static void vnc_debug_gnutls_log(int level, const char* str) {
48 VNC_DEBUG("%d %s", level, str);
50 #endif /* CONFIG_VNC_TLS && _VNC_DEBUG */
52 #define VNC_DEBUG(fmt, ...) do { } while (0)
63 typedef struct VncState VncState;
65 typedef int VncReadEvent(VncState *vs, char *data, size_t len);
67 typedef void VncWritePixels(VncState *vs, void *data, int size);
69 typedef void VncSendHextileTile(VncState *vs,
70 int x, int y, int w, int h,
73 int *has_bg, int *has_fg);
75 #define VNC_MAX_WIDTH 2048
76 #define VNC_MAX_HEIGHT 2048
77 #define VNC_DIRTY_WORDS (VNC_MAX_WIDTH / (16 * 32))
79 #define VNC_AUTH_CHALLENGE_SIZE 16
90 VNC_AUTH_VENCRYPT = 19
100 VNC_AUTH_VENCRYPT_PLAIN = 256,
101 VNC_AUTH_VENCRYPT_TLSNONE = 257,
102 VNC_AUTH_VENCRYPT_TLSVNC = 258,
103 VNC_AUTH_VENCRYPT_TLSPLAIN = 259,
104 VNC_AUTH_VENCRYPT_X509NONE = 260,
105 VNC_AUTH_VENCRYPT_X509VNC = 261,
106 VNC_AUTH_VENCRYPT_X509PLAIN = 262,
110 #define X509_CA_CERT_FILE "ca-cert.pem"
111 #define X509_CA_CRL_FILE "ca-crl.pem"
112 #define X509_SERVER_KEY_FILE "server-key.pem"
113 #define X509_SERVER_CERT_FILE "server-cert.pem"
116 #endif /* CONFIG_VNC_TLS */
127 uint32_t dirty_row[VNC_MAX_HEIGHT][VNC_DIRTY_WORDS];
129 int depth; /* internal VNC frame buffer byte per pixel */
132 int has_pointer_type_change;
152 char challenge[VNC_AUTH_CHALLENGE_SIZE];
156 gnutls_session_t tls_session;
161 kbd_layout_t *kbd_layout;
162 /* current output mode information */
163 VncWritePixels *write_pixels;
164 VncSendHextileTile *send_hextile_tile;
165 int pix_bpp, pix_big_endian;
166 int red_shift, red_max, red_shift1;
167 int green_shift, green_max, green_shift1;
168 int blue_shift, blue_max, blue_shift1;
170 VncReadEvent *read_handler;
171 size_t read_handler_expect;
173 uint8_t modifiers_state[256];
176 static VncState *vnc_state; /* needed for info vnc */
178 void do_info_vnc(void)
180 if (vnc_state == NULL)
181 term_printf("VNC server disabled\n");
183 term_printf("VNC server active on: ");
184 term_print_filename(vnc_state->display);
187 if (vnc_state->csock == -1)
188 term_printf("No client connected\n");
190 term_printf("Client connected\n");
195 1) Get the queue working for IO.
196 2) there is some weirdness when using the -S option (the screen is grey
197 and not totally invalidated
198 3) resolutions > 1024
201 static void vnc_write(VncState *vs, const void *data, size_t len);
202 static void vnc_write_u32(VncState *vs, uint32_t value);
203 static void vnc_write_s32(VncState *vs, int32_t value);
204 static void vnc_write_u16(VncState *vs, uint16_t value);
205 static void vnc_write_u8(VncState *vs, uint8_t value);
206 static void vnc_flush(VncState *vs);
207 static void vnc_update_client(void *opaque);
208 static void vnc_client_read(void *opaque);
210 static inline void vnc_set_bit(uint32_t *d, int k)
212 d[k >> 5] |= 1 << (k & 0x1f);
215 static inline void vnc_clear_bit(uint32_t *d, int k)
217 d[k >> 5] &= ~(1 << (k & 0x1f));
220 static inline void vnc_set_bits(uint32_t *d, int n, int nb_words)
230 d[j++] = (1 << n) - 1;
235 static inline int vnc_get_bit(const uint32_t *d, int k)
237 return (d[k >> 5] >> (k & 0x1f)) & 1;
240 static inline int vnc_and_bits(const uint32_t *d1, const uint32_t *d2,
244 for(i = 0; i < nb_words; i++) {
245 if ((d1[i] & d2[i]) != 0)
251 static void vnc_dpy_update(DisplayState *ds, int x, int y, int w, int h)
253 VncState *vs = ds->opaque;
259 for (i = 0; i < w; i += 16)
260 vnc_set_bit(vs->dirty_row[y], (x + i) / 16);
263 static void vnc_framebuffer_update(VncState *vs, int x, int y, int w, int h,
266 vnc_write_u16(vs, x);
267 vnc_write_u16(vs, y);
268 vnc_write_u16(vs, w);
269 vnc_write_u16(vs, h);
271 vnc_write_s32(vs, encoding);
274 static void vnc_dpy_resize(DisplayState *ds, int w, int h)
277 VncState *vs = ds->opaque;
279 ds->data = realloc(ds->data, w * h * vs->depth);
280 vs->old_data = realloc(vs->old_data, w * h * vs->depth);
282 if (ds->data == NULL || vs->old_data == NULL) {
283 fprintf(stderr, "vnc: memory allocation failed\n");
287 ds->depth = vs->depth * 8;
288 size_changed = ds->width != w || ds->height != h;
291 ds->linesize = w * vs->depth;
292 if (vs->csock != -1 && vs->has_resize && size_changed) {
293 vnc_write_u8(vs, 0); /* msg id */
295 vnc_write_u16(vs, 1); /* number of rects */
296 vnc_framebuffer_update(vs, 0, 0, ds->width, ds->height, -223);
298 vs->width = ds->width;
299 vs->height = ds->height;
304 static void vnc_write_pixels_copy(VncState *vs, void *pixels, int size)
306 vnc_write(vs, pixels, size);
309 /* slowest but generic code. */
310 static void vnc_convert_pixel(VncState *vs, uint8_t *buf, uint32_t v)
312 unsigned int r, g, b;
314 r = (v >> vs->red_shift1) & vs->red_max;
315 g = (v >> vs->green_shift1) & vs->green_max;
316 b = (v >> vs->blue_shift1) & vs->blue_max;
317 v = (r << vs->red_shift) |
318 (g << vs->green_shift) |
319 (b << vs->blue_shift);
320 switch(vs->pix_bpp) {
325 if (vs->pix_big_endian) {
335 if (vs->pix_big_endian) {
350 static void vnc_write_pixels_generic(VncState *vs, void *pixels1, int size)
352 uint32_t *pixels = pixels1;
357 for(i = 0; i < n; i++) {
358 vnc_convert_pixel(vs, buf, pixels[i]);
359 vnc_write(vs, buf, vs->pix_bpp);
363 static void send_framebuffer_update_raw(VncState *vs, int x, int y, int w, int h)
368 vnc_framebuffer_update(vs, x, y, w, h, 0);
370 row = vs->ds->data + y * vs->ds->linesize + x * vs->depth;
371 for (i = 0; i < h; i++) {
372 vs->write_pixels(vs, row, w * vs->depth);
373 row += vs->ds->linesize;
377 static void hextile_enc_cord(uint8_t *ptr, int x, int y, int w, int h)
379 ptr[0] = ((x & 0x0F) << 4) | (y & 0x0F);
380 ptr[1] = (((w - 1) & 0x0F) << 4) | ((h - 1) & 0x0F);
384 #include "vnchextile.h"
388 #include "vnchextile.h"
392 #include "vnchextile.h"
397 #include "vnchextile.h"
401 static void send_framebuffer_update_hextile(VncState *vs, int x, int y, int w, int h)
405 uint32_t last_fg32, last_bg32;
407 vnc_framebuffer_update(vs, x, y, w, h, 5);
410 for (j = y; j < (y + h); j += 16) {
411 for (i = x; i < (x + w); i += 16) {
412 vs->send_hextile_tile(vs, i, j,
413 MIN(16, x + w - i), MIN(16, y + h - j),
414 &last_bg32, &last_fg32, &has_bg, &has_fg);
419 static void send_framebuffer_update(VncState *vs, int x, int y, int w, int h)
422 send_framebuffer_update_hextile(vs, x, y, w, h);
424 send_framebuffer_update_raw(vs, x, y, w, h);
427 static void vnc_copy(DisplayState *ds, int src_x, int src_y, int dst_x, int dst_y, int w, int h)
434 int pitch = ds->linesize;
435 VncState *vs = ds->opaque;
437 vnc_update_client(vs);
444 src = (ds->linesize * (src_y + y) + vs->depth * src_x);
445 dst = (ds->linesize * (dst_y + y) + vs->depth * dst_x);
447 src_row = ds->data + src;
448 dst_row = ds->data + dst;
449 old_row = vs->old_data + dst;
451 for (y = 0; y < h; y++) {
452 memmove(old_row, src_row, w * vs->depth);
453 memmove(dst_row, src_row, w * vs->depth);
459 vnc_write_u8(vs, 0); /* msg id */
461 vnc_write_u16(vs, 1); /* number of rects */
462 vnc_framebuffer_update(vs, dst_x, dst_y, w, h, 1);
463 vnc_write_u16(vs, src_x);
464 vnc_write_u16(vs, src_y);
468 static int find_dirty_height(VncState *vs, int y, int last_x, int x)
472 for (h = 1; h < (vs->height - y); h++) {
474 if (!vnc_get_bit(vs->dirty_row[y + h], last_x))
476 for (tmp_x = last_x; tmp_x < x; tmp_x++)
477 vnc_clear_bit(vs->dirty_row[y + h], tmp_x);
483 static void vnc_update_client(void *opaque)
485 VncState *vs = opaque;
487 if (vs->need_update && vs->csock != -1) {
491 uint32_t width_mask[VNC_DIRTY_WORDS];
496 vnc_set_bits(width_mask, (vs->width / 16), VNC_DIRTY_WORDS);
498 /* Walk through the dirty map and eliminate tiles that
499 really aren't dirty */
501 old_row = vs->old_data;
503 for (y = 0; y < vs->height; y++) {
504 if (vnc_and_bits(vs->dirty_row[y], width_mask, VNC_DIRTY_WORDS)) {
511 for (x = 0; x < vs->ds->width; x += 16) {
512 if (memcmp(old_ptr, ptr, 16 * vs->depth) == 0) {
513 vnc_clear_bit(vs->dirty_row[y], (x / 16));
516 memcpy(old_ptr, ptr, 16 * vs->depth);
519 ptr += 16 * vs->depth;
520 old_ptr += 16 * vs->depth;
524 row += vs->ds->linesize;
525 old_row += vs->ds->linesize;
529 qemu_mod_timer(vs->timer, qemu_get_clock(rt_clock) + VNC_REFRESH_INTERVAL);
533 /* Count rectangles */
535 vnc_write_u8(vs, 0); /* msg id */
537 saved_offset = vs->output.offset;
538 vnc_write_u16(vs, 0);
540 for (y = 0; y < vs->height; y++) {
543 for (x = 0; x < vs->width / 16; x++) {
544 if (vnc_get_bit(vs->dirty_row[y], x)) {
548 vnc_clear_bit(vs->dirty_row[y], x);
551 int h = find_dirty_height(vs, y, last_x, x);
552 send_framebuffer_update(vs, last_x * 16, y, (x - last_x) * 16, h);
559 int h = find_dirty_height(vs, y, last_x, x);
560 send_framebuffer_update(vs, last_x * 16, y, (x - last_x) * 16, h);
564 vs->output.buffer[saved_offset] = (n_rectangles >> 8) & 0xFF;
565 vs->output.buffer[saved_offset + 1] = n_rectangles & 0xFF;
569 qemu_mod_timer(vs->timer, qemu_get_clock(rt_clock) + VNC_REFRESH_INTERVAL);
572 static void vnc_timer_init(VncState *vs)
574 if (vs->timer == NULL) {
575 vs->timer = qemu_new_timer(rt_clock, vnc_update_client, vs);
576 qemu_mod_timer(vs->timer, qemu_get_clock(rt_clock));
580 static void vnc_dpy_refresh(DisplayState *ds)
582 VncState *vs = ds->opaque;
587 static int vnc_listen_poll(void *opaque)
589 VncState *vs = opaque;
595 static void buffer_reserve(Buffer *buffer, size_t len)
597 if ((buffer->capacity - buffer->offset) < len) {
598 buffer->capacity += (len + 1024);
599 buffer->buffer = realloc(buffer->buffer, buffer->capacity);
600 if (buffer->buffer == NULL) {
601 fprintf(stderr, "vnc: out of memory\n");
607 static int buffer_empty(Buffer *buffer)
609 return buffer->offset == 0;
612 static char *buffer_end(Buffer *buffer)
614 return buffer->buffer + buffer->offset;
617 static void buffer_reset(Buffer *buffer)
622 static void buffer_append(Buffer *buffer, const void *data, size_t len)
624 memcpy(buffer->buffer + buffer->offset, data, len);
625 buffer->offset += len;
628 static int vnc_client_io_error(VncState *vs, int ret, int last_errno)
630 if (ret == 0 || ret == -1) {
631 if (ret == -1 && (last_errno == EINTR || last_errno == EAGAIN))
634 VNC_DEBUG("Closing down client sock %d %d\n", ret, ret < 0 ? last_errno : 0);
635 qemu_set_fd_handler2(vs->csock, NULL, NULL, NULL, NULL);
636 closesocket(vs->csock);
638 buffer_reset(&vs->input);
639 buffer_reset(&vs->output);
642 if (vs->tls_session) {
643 gnutls_deinit(vs->tls_session);
644 vs->tls_session = NULL;
646 vs->wiremode = VNC_WIREMODE_CLEAR;
647 #endif /* CONFIG_VNC_TLS */
653 static void vnc_client_error(VncState *vs)
655 vnc_client_io_error(vs, -1, EINVAL);
658 static void vnc_client_write(void *opaque)
661 VncState *vs = opaque;
664 if (vs->tls_session) {
665 ret = gnutls_write(vs->tls_session, vs->output.buffer, vs->output.offset);
667 if (ret == GNUTLS_E_AGAIN)
674 #endif /* CONFIG_VNC_TLS */
675 ret = send(vs->csock, vs->output.buffer, vs->output.offset, 0);
676 ret = vnc_client_io_error(vs, ret, socket_error());
680 memmove(vs->output.buffer, vs->output.buffer + ret, (vs->output.offset - ret));
681 vs->output.offset -= ret;
683 if (vs->output.offset == 0) {
684 qemu_set_fd_handler2(vs->csock, NULL, vnc_client_read, NULL, vs);
688 static void vnc_read_when(VncState *vs, VncReadEvent *func, size_t expecting)
690 vs->read_handler = func;
691 vs->read_handler_expect = expecting;
694 static void vnc_client_read(void *opaque)
696 VncState *vs = opaque;
699 buffer_reserve(&vs->input, 4096);
702 if (vs->tls_session) {
703 ret = gnutls_read(vs->tls_session, buffer_end(&vs->input), 4096);
705 if (ret == GNUTLS_E_AGAIN)
712 #endif /* CONFIG_VNC_TLS */
713 ret = recv(vs->csock, buffer_end(&vs->input), 4096, 0);
714 ret = vnc_client_io_error(vs, ret, socket_error());
718 vs->input.offset += ret;
720 while (vs->read_handler && vs->input.offset >= vs->read_handler_expect) {
721 size_t len = vs->read_handler_expect;
724 ret = vs->read_handler(vs, vs->input.buffer, len);
729 memmove(vs->input.buffer, vs->input.buffer + len, (vs->input.offset - len));
730 vs->input.offset -= len;
732 vs->read_handler_expect = ret;
737 static void vnc_write(VncState *vs, const void *data, size_t len)
739 buffer_reserve(&vs->output, len);
741 if (buffer_empty(&vs->output)) {
742 qemu_set_fd_handler2(vs->csock, NULL, vnc_client_read, vnc_client_write, vs);
745 buffer_append(&vs->output, data, len);
748 static void vnc_write_s32(VncState *vs, int32_t value)
750 vnc_write_u32(vs, *(uint32_t *)&value);
753 static void vnc_write_u32(VncState *vs, uint32_t value)
757 buf[0] = (value >> 24) & 0xFF;
758 buf[1] = (value >> 16) & 0xFF;
759 buf[2] = (value >> 8) & 0xFF;
760 buf[3] = value & 0xFF;
762 vnc_write(vs, buf, 4);
765 static void vnc_write_u16(VncState *vs, uint16_t value)
769 buf[0] = (value >> 8) & 0xFF;
770 buf[1] = value & 0xFF;
772 vnc_write(vs, buf, 2);
775 static void vnc_write_u8(VncState *vs, uint8_t value)
777 vnc_write(vs, (char *)&value, 1);
780 static void vnc_flush(VncState *vs)
782 if (vs->output.offset)
783 vnc_client_write(vs);
786 static uint8_t read_u8(uint8_t *data, size_t offset)
791 static uint16_t read_u16(uint8_t *data, size_t offset)
793 return ((data[offset] & 0xFF) << 8) | (data[offset + 1] & 0xFF);
796 static int32_t read_s32(uint8_t *data, size_t offset)
798 return (int32_t)((data[offset] << 24) | (data[offset + 1] << 16) |
799 (data[offset + 2] << 8) | data[offset + 3]);
802 static uint32_t read_u32(uint8_t *data, size_t offset)
804 return ((data[offset] << 24) | (data[offset + 1] << 16) |
805 (data[offset + 2] << 8) | data[offset + 3]);
809 ssize_t vnc_tls_push(gnutls_transport_ptr_t transport,
812 struct VncState *vs = (struct VncState *)transport;
816 ret = send(vs->csock, data, len, 0);
826 ssize_t vnc_tls_pull(gnutls_transport_ptr_t transport,
829 struct VncState *vs = (struct VncState *)transport;
833 ret = recv(vs->csock, data, len, 0);
841 #endif /* CONFIG_VNC_TLS */
843 static void client_cut_text(VncState *vs, size_t len, char *text)
847 static void check_pointer_type_change(VncState *vs, int absolute)
849 if (vs->has_pointer_type_change && vs->absolute != absolute) {
852 vnc_write_u16(vs, 1);
853 vnc_framebuffer_update(vs, absolute, 0,
854 vs->ds->width, vs->ds->height, -257);
857 vs->absolute = absolute;
860 static void pointer_event(VncState *vs, int button_mask, int x, int y)
865 if (button_mask & 0x01)
866 buttons |= MOUSE_EVENT_LBUTTON;
867 if (button_mask & 0x02)
868 buttons |= MOUSE_EVENT_MBUTTON;
869 if (button_mask & 0x04)
870 buttons |= MOUSE_EVENT_RBUTTON;
871 if (button_mask & 0x08)
873 if (button_mask & 0x10)
877 kbd_mouse_event(x * 0x7FFF / vs->ds->width,
878 y * 0x7FFF / vs->ds->height,
880 } else if (vs->has_pointer_type_change) {
884 kbd_mouse_event(x, y, dz, buttons);
886 if (vs->last_x != -1)
887 kbd_mouse_event(x - vs->last_x,
894 check_pointer_type_change(vs, kbd_mouse_is_absolute());
897 static void reset_keys(VncState *vs)
900 for(i = 0; i < 256; i++) {
901 if (vs->modifiers_state[i]) {
903 kbd_put_keycode(0xe0);
904 kbd_put_keycode(i | 0x80);
905 vs->modifiers_state[i] = 0;
910 static void do_key_event(VncState *vs, int down, uint32_t sym)
914 keycode = keysym2scancode(vs->kbd_layout, sym & 0xFFFF);
916 /* QEMU console switch */
918 case 0x2a: /* Left Shift */
919 case 0x36: /* Right Shift */
920 case 0x1d: /* Left CTRL */
921 case 0x9d: /* Right CTRL */
922 case 0x38: /* Left ALT */
923 case 0xb8: /* Right ALT */
925 vs->modifiers_state[keycode] = 1;
927 vs->modifiers_state[keycode] = 0;
929 case 0x02 ... 0x0a: /* '1' to '9' keys */
930 if (down && vs->modifiers_state[0x1d] && vs->modifiers_state[0x38]) {
931 /* Reset the modifiers sent to the current console */
933 console_select(keycode - 0x02);
939 if (is_graphic_console()) {
941 kbd_put_keycode(0xe0);
943 kbd_put_keycode(keycode & 0x7f);
945 kbd_put_keycode(keycode | 0x80);
947 /* QEMU console emulation */
950 case 0x2a: /* Left Shift */
951 case 0x36: /* Right Shift */
952 case 0x1d: /* Left CTRL */
953 case 0x9d: /* Right CTRL */
954 case 0x38: /* Left ALT */
955 case 0xb8: /* Right ALT */
958 kbd_put_keysym(QEMU_KEY_UP);
961 kbd_put_keysym(QEMU_KEY_DOWN);
964 kbd_put_keysym(QEMU_KEY_LEFT);
967 kbd_put_keysym(QEMU_KEY_RIGHT);
970 kbd_put_keysym(QEMU_KEY_DELETE);
973 kbd_put_keysym(QEMU_KEY_HOME);
976 kbd_put_keysym(QEMU_KEY_END);
979 kbd_put_keysym(QEMU_KEY_PAGEUP);
982 kbd_put_keysym(QEMU_KEY_PAGEDOWN);
992 static void key_event(VncState *vs, int down, uint32_t sym)
994 if (sym >= 'A' && sym <= 'Z')
995 sym = sym - 'A' + 'a';
996 do_key_event(vs, down, sym);
999 static void framebuffer_update_request(VncState *vs, int incremental,
1000 int x_position, int y_position,
1003 if (x_position > vs->ds->width)
1004 x_position = vs->ds->width;
1005 if (y_position > vs->ds->height)
1006 y_position = vs->ds->height;
1007 if (x_position + w >= vs->ds->width)
1008 w = vs->ds->width - x_position;
1009 if (y_position + h >= vs->ds->height)
1010 h = vs->ds->height - y_position;
1013 vs->need_update = 1;
1015 char *old_row = vs->old_data + y_position * vs->ds->linesize;
1017 for (i = 0; i < h; i++) {
1018 vnc_set_bits(vs->dirty_row[y_position + i],
1019 (vs->ds->width / 16), VNC_DIRTY_WORDS);
1020 memset(old_row, 42, vs->ds->width * vs->depth);
1021 old_row += vs->ds->linesize;
1026 static void set_encodings(VncState *vs, int32_t *encodings, size_t n_encodings)
1030 vs->has_hextile = 0;
1032 vs->has_pointer_type_change = 0;
1034 vs->ds->dpy_copy = NULL;
1036 for (i = n_encodings - 1; i >= 0; i--) {
1037 switch (encodings[i]) {
1039 vs->has_hextile = 0;
1041 case 1: /* CopyRect */
1042 vs->ds->dpy_copy = vnc_copy;
1044 case 5: /* Hextile */
1045 vs->has_hextile = 1;
1047 case -223: /* DesktopResize */
1051 vs->has_pointer_type_change = 1;
1058 check_pointer_type_change(vs, kbd_mouse_is_absolute());
1061 static int compute_nbits(unsigned int val)
1072 static void set_pixel_format(VncState *vs,
1073 int bits_per_pixel, int depth,
1074 int big_endian_flag, int true_color_flag,
1075 int red_max, int green_max, int blue_max,
1076 int red_shift, int green_shift, int blue_shift)
1078 int host_big_endian_flag;
1080 #ifdef WORDS_BIGENDIAN
1081 host_big_endian_flag = 1;
1083 host_big_endian_flag = 0;
1085 if (!true_color_flag) {
1087 vnc_client_error(vs);
1090 if (bits_per_pixel == 32 &&
1091 host_big_endian_flag == big_endian_flag &&
1092 red_max == 0xff && green_max == 0xff && blue_max == 0xff &&
1093 red_shift == 16 && green_shift == 8 && blue_shift == 0) {
1095 vs->write_pixels = vnc_write_pixels_copy;
1096 vs->send_hextile_tile = send_hextile_tile_32;
1098 if (bits_per_pixel == 16 &&
1099 host_big_endian_flag == big_endian_flag &&
1100 red_max == 31 && green_max == 63 && blue_max == 31 &&
1101 red_shift == 11 && green_shift == 5 && blue_shift == 0) {
1103 vs->write_pixels = vnc_write_pixels_copy;
1104 vs->send_hextile_tile = send_hextile_tile_16;
1106 if (bits_per_pixel == 8 &&
1107 red_max == 7 && green_max == 7 && blue_max == 3 &&
1108 red_shift == 5 && green_shift == 2 && blue_shift == 0) {
1110 vs->write_pixels = vnc_write_pixels_copy;
1111 vs->send_hextile_tile = send_hextile_tile_8;
1114 /* generic and slower case */
1115 if (bits_per_pixel != 8 &&
1116 bits_per_pixel != 16 &&
1117 bits_per_pixel != 32)
1120 vs->red_shift = red_shift;
1121 vs->red_max = red_max;
1122 vs->red_shift1 = 24 - compute_nbits(red_max);
1123 vs->green_shift = green_shift;
1124 vs->green_max = green_max;
1125 vs->green_shift1 = 16 - compute_nbits(green_max);
1126 vs->blue_shift = blue_shift;
1127 vs->blue_max = blue_max;
1128 vs->blue_shift1 = 8 - compute_nbits(blue_max);
1129 vs->pix_bpp = bits_per_pixel / 8;
1130 vs->pix_big_endian = big_endian_flag;
1131 vs->write_pixels = vnc_write_pixels_generic;
1132 vs->send_hextile_tile = send_hextile_tile_generic;
1135 vnc_dpy_resize(vs->ds, vs->ds->width, vs->ds->height);
1136 memset(vs->dirty_row, 0xFF, sizeof(vs->dirty_row));
1137 memset(vs->old_data, 42, vs->ds->linesize * vs->ds->height);
1139 vga_hw_invalidate();
1143 static int protocol_client_msg(VncState *vs, char *data, size_t len)
1153 set_pixel_format(vs, read_u8(data, 4), read_u8(data, 5),
1154 read_u8(data, 6), read_u8(data, 7),
1155 read_u16(data, 8), read_u16(data, 10),
1156 read_u16(data, 12), read_u8(data, 14),
1157 read_u8(data, 15), read_u8(data, 16));
1164 return 4 + (read_u16(data, 2) * 4);
1166 limit = read_u16(data, 2);
1167 for (i = 0; i < limit; i++) {
1168 int32_t val = read_s32(data, 4 + (i * 4));
1169 memcpy(data + 4 + (i * 4), &val, sizeof(val));
1172 set_encodings(vs, (int32_t *)(data + 4), limit);
1178 framebuffer_update_request(vs,
1179 read_u8(data, 1), read_u16(data, 2), read_u16(data, 4),
1180 read_u16(data, 6), read_u16(data, 8));
1186 key_event(vs, read_u8(data, 1), read_u32(data, 4));
1192 pointer_event(vs, read_u8(data, 1), read_u16(data, 2), read_u16(data, 4));
1199 return 8 + read_u32(data, 4);
1201 client_cut_text(vs, read_u32(data, 4), data + 8);
1204 printf("Msg: %d\n", data[0]);
1205 vnc_client_error(vs);
1209 vnc_read_when(vs, protocol_client_msg, 1);
1213 static int protocol_client_init(VncState *vs, char *data, size_t len)
1215 char pad[3] = { 0, 0, 0 };
1219 vs->width = vs->ds->width;
1220 vs->height = vs->ds->height;
1221 vnc_write_u16(vs, vs->ds->width);
1222 vnc_write_u16(vs, vs->ds->height);
1224 vnc_write_u8(vs, vs->depth * 8); /* bits-per-pixel */
1225 vnc_write_u8(vs, vs->depth * 8); /* depth */
1226 #ifdef WORDS_BIGENDIAN
1227 vnc_write_u8(vs, 1); /* big-endian-flag */
1229 vnc_write_u8(vs, 0); /* big-endian-flag */
1231 vnc_write_u8(vs, 1); /* true-color-flag */
1232 if (vs->depth == 4) {
1233 vnc_write_u16(vs, 0xFF); /* red-max */
1234 vnc_write_u16(vs, 0xFF); /* green-max */
1235 vnc_write_u16(vs, 0xFF); /* blue-max */
1236 vnc_write_u8(vs, 16); /* red-shift */
1237 vnc_write_u8(vs, 8); /* green-shift */
1238 vnc_write_u8(vs, 0); /* blue-shift */
1239 vs->send_hextile_tile = send_hextile_tile_32;
1240 } else if (vs->depth == 2) {
1241 vnc_write_u16(vs, 31); /* red-max */
1242 vnc_write_u16(vs, 63); /* green-max */
1243 vnc_write_u16(vs, 31); /* blue-max */
1244 vnc_write_u8(vs, 11); /* red-shift */
1245 vnc_write_u8(vs, 5); /* green-shift */
1246 vnc_write_u8(vs, 0); /* blue-shift */
1247 vs->send_hextile_tile = send_hextile_tile_16;
1248 } else if (vs->depth == 1) {
1249 /* XXX: change QEMU pixel 8 bit pixel format to match the VNC one ? */
1250 vnc_write_u16(vs, 7); /* red-max */
1251 vnc_write_u16(vs, 7); /* green-max */
1252 vnc_write_u16(vs, 3); /* blue-max */
1253 vnc_write_u8(vs, 5); /* red-shift */
1254 vnc_write_u8(vs, 2); /* green-shift */
1255 vnc_write_u8(vs, 0); /* blue-shift */
1256 vs->send_hextile_tile = send_hextile_tile_8;
1258 vs->write_pixels = vnc_write_pixels_copy;
1260 vnc_write(vs, pad, 3); /* padding */
1263 size = snprintf(buf, sizeof(buf), "QEMU (%s)", qemu_name);
1265 size = snprintf(buf, sizeof(buf), "QEMU");
1267 vnc_write_u32(vs, size);
1268 vnc_write(vs, buf, size);
1271 vnc_read_when(vs, protocol_client_msg, 1);
1276 static void make_challenge(VncState *vs)
1280 srand(time(NULL)+getpid()+getpid()*987654+rand());
1282 for (i = 0 ; i < sizeof(vs->challenge) ; i++)
1283 vs->challenge[i] = (int) (256.0*rand()/(RAND_MAX+1.0));
1286 static int protocol_client_auth_vnc(VncState *vs, char *data, size_t len)
1288 char response[VNC_AUTH_CHALLENGE_SIZE];
1292 if (!vs->password || !vs->password[0]) {
1293 VNC_DEBUG("No password configured on server");
1294 vnc_write_u32(vs, 1); /* Reject auth */
1295 if (vs->minor >= 8) {
1296 static const char err[] = "Authentication failed";
1297 vnc_write_u32(vs, sizeof(err));
1298 vnc_write(vs, err, sizeof(err));
1301 vnc_client_error(vs);
1305 memcpy(response, vs->challenge, VNC_AUTH_CHALLENGE_SIZE);
1307 /* Calculate the expected challenge response */
1308 pwlen = strlen(vs->password);
1309 for (i=0; i<sizeof(key); i++)
1310 key[i] = i<pwlen ? vs->password[i] : 0;
1312 for (j = 0; j < VNC_AUTH_CHALLENGE_SIZE; j += 8)
1313 des(response+j, response+j);
1315 /* Compare expected vs actual challenge response */
1316 if (memcmp(response, data, VNC_AUTH_CHALLENGE_SIZE) != 0) {
1317 VNC_DEBUG("Client challenge reponse did not match\n");
1318 vnc_write_u32(vs, 1); /* Reject auth */
1319 if (vs->minor >= 8) {
1320 static const char err[] = "Authentication failed";
1321 vnc_write_u32(vs, sizeof(err));
1322 vnc_write(vs, err, sizeof(err));
1325 vnc_client_error(vs);
1327 VNC_DEBUG("Accepting VNC challenge response\n");
1328 vnc_write_u32(vs, 0); /* Accept auth */
1331 vnc_read_when(vs, protocol_client_init, 1);
1336 static int start_auth_vnc(VncState *vs)
1339 /* Send client a 'random' challenge */
1340 vnc_write(vs, vs->challenge, sizeof(vs->challenge));
1343 vnc_read_when(vs, protocol_client_auth_vnc, sizeof(vs->challenge));
1349 #define DH_BITS 1024
1350 static gnutls_dh_params_t dh_params;
1352 static int vnc_tls_initialize(void)
1354 static int tlsinitialized = 0;
1359 if (gnutls_global_init () < 0)
1362 /* XXX ought to re-generate diffie-hellmen params periodically */
1363 if (gnutls_dh_params_init (&dh_params) < 0)
1365 if (gnutls_dh_params_generate2 (dh_params, DH_BITS) < 0)
1369 gnutls_global_set_log_level(10);
1370 gnutls_global_set_log_function(vnc_debug_gnutls_log);
1378 static gnutls_anon_server_credentials vnc_tls_initialize_anon_cred(void)
1380 gnutls_anon_server_credentials anon_cred;
1383 if ((ret = gnutls_anon_allocate_server_credentials(&anon_cred)) < 0) {
1384 VNC_DEBUG("Cannot allocate credentials %s\n", gnutls_strerror(ret));
1388 gnutls_anon_set_server_dh_params(anon_cred, dh_params);
1394 static gnutls_certificate_credentials_t vnc_tls_initialize_x509_cred(VncState *vs)
1396 gnutls_certificate_credentials_t x509_cred;
1399 if (!vs->x509cacert) {
1400 VNC_DEBUG("No CA x509 certificate specified\n");
1403 if (!vs->x509cert) {
1404 VNC_DEBUG("No server x509 certificate specified\n");
1408 VNC_DEBUG("No server private key specified\n");
1412 if ((ret = gnutls_certificate_allocate_credentials(&x509_cred)) < 0) {
1413 VNC_DEBUG("Cannot allocate credentials %s\n", gnutls_strerror(ret));
1416 if ((ret = gnutls_certificate_set_x509_trust_file(x509_cred,
1418 GNUTLS_X509_FMT_PEM)) < 0) {
1419 VNC_DEBUG("Cannot load CA certificate %s\n", gnutls_strerror(ret));
1420 gnutls_certificate_free_credentials(x509_cred);
1424 if ((ret = gnutls_certificate_set_x509_key_file (x509_cred,
1427 GNUTLS_X509_FMT_PEM)) < 0) {
1428 VNC_DEBUG("Cannot load certificate & key %s\n", gnutls_strerror(ret));
1429 gnutls_certificate_free_credentials(x509_cred);
1433 if (vs->x509cacrl) {
1434 if ((ret = gnutls_certificate_set_x509_crl_file(x509_cred,
1436 GNUTLS_X509_FMT_PEM)) < 0) {
1437 VNC_DEBUG("Cannot load CRL %s\n", gnutls_strerror(ret));
1438 gnutls_certificate_free_credentials(x509_cred);
1443 gnutls_certificate_set_dh_params (x509_cred, dh_params);
1448 static int vnc_validate_certificate(struct VncState *vs)
1451 unsigned int status;
1452 const gnutls_datum_t *certs;
1453 unsigned int nCerts, i;
1456 VNC_DEBUG("Validating client certificate\n");
1457 if ((ret = gnutls_certificate_verify_peers2 (vs->tls_session, &status)) < 0) {
1458 VNC_DEBUG("Verify failed %s\n", gnutls_strerror(ret));
1462 if ((now = time(NULL)) == ((time_t)-1)) {
1467 if (status & GNUTLS_CERT_INVALID)
1468 VNC_DEBUG("The certificate is not trusted.\n");
1470 if (status & GNUTLS_CERT_SIGNER_NOT_FOUND)
1471 VNC_DEBUG("The certificate hasn't got a known issuer.\n");
1473 if (status & GNUTLS_CERT_REVOKED)
1474 VNC_DEBUG("The certificate has been revoked.\n");
1476 if (status & GNUTLS_CERT_INSECURE_ALGORITHM)
1477 VNC_DEBUG("The certificate uses an insecure algorithm\n");
1481 VNC_DEBUG("Certificate is valid!\n");
1484 /* Only support x509 for now */
1485 if (gnutls_certificate_type_get(vs->tls_session) != GNUTLS_CRT_X509)
1488 if (!(certs = gnutls_certificate_get_peers(vs->tls_session, &nCerts)))
1491 for (i = 0 ; i < nCerts ; i++) {
1492 gnutls_x509_crt_t cert;
1493 VNC_DEBUG ("Checking certificate chain %d\n", i);
1494 if (gnutls_x509_crt_init (&cert) < 0)
1497 if (gnutls_x509_crt_import(cert, &certs[i], GNUTLS_X509_FMT_DER) < 0) {
1498 gnutls_x509_crt_deinit (cert);
1502 if (gnutls_x509_crt_get_expiration_time (cert) < now) {
1503 VNC_DEBUG("The certificate has expired\n");
1504 gnutls_x509_crt_deinit (cert);
1508 if (gnutls_x509_crt_get_activation_time (cert) > now) {
1509 VNC_DEBUG("The certificate is not yet activated\n");
1510 gnutls_x509_crt_deinit (cert);
1514 if (gnutls_x509_crt_get_activation_time (cert) > now) {
1515 VNC_DEBUG("The certificate is not yet activated\n");
1516 gnutls_x509_crt_deinit (cert);
1520 gnutls_x509_crt_deinit (cert);
1527 static int start_auth_vencrypt_subauth(VncState *vs)
1529 switch (vs->subauth) {
1530 case VNC_AUTH_VENCRYPT_TLSNONE:
1531 case VNC_AUTH_VENCRYPT_X509NONE:
1532 VNC_DEBUG("Accept TLS auth none\n");
1533 vnc_write_u32(vs, 0); /* Accept auth completion */
1534 vnc_read_when(vs, protocol_client_init, 1);
1537 case VNC_AUTH_VENCRYPT_TLSVNC:
1538 case VNC_AUTH_VENCRYPT_X509VNC:
1539 VNC_DEBUG("Start TLS auth VNC\n");
1540 return start_auth_vnc(vs);
1542 default: /* Should not be possible, but just in case */
1543 VNC_DEBUG("Reject auth %d\n", vs->auth);
1544 vnc_write_u8(vs, 1);
1545 if (vs->minor >= 8) {
1546 static const char err[] = "Unsupported authentication type";
1547 vnc_write_u32(vs, sizeof(err));
1548 vnc_write(vs, err, sizeof(err));
1550 vnc_client_error(vs);
1556 static void vnc_handshake_io(void *opaque);
1558 static int vnc_continue_handshake(struct VncState *vs) {
1561 if ((ret = gnutls_handshake(vs->tls_session)) < 0) {
1562 if (!gnutls_error_is_fatal(ret)) {
1563 VNC_DEBUG("Handshake interrupted (blocking)\n");
1564 if (!gnutls_record_get_direction(vs->tls_session))
1565 qemu_set_fd_handler(vs->csock, vnc_handshake_io, NULL, vs);
1567 qemu_set_fd_handler(vs->csock, NULL, vnc_handshake_io, vs);
1570 VNC_DEBUG("Handshake failed %s\n", gnutls_strerror(ret));
1571 vnc_client_error(vs);
1575 if (vs->x509verify) {
1576 if (vnc_validate_certificate(vs) < 0) {
1577 VNC_DEBUG("Client verification failed\n");
1578 vnc_client_error(vs);
1581 VNC_DEBUG("Client verification passed\n");
1585 VNC_DEBUG("Handshake done, switching to TLS data mode\n");
1586 vs->wiremode = VNC_WIREMODE_TLS;
1587 qemu_set_fd_handler2(vs->csock, NULL, vnc_client_read, vnc_client_write, vs);
1589 return start_auth_vencrypt_subauth(vs);
1592 static void vnc_handshake_io(void *opaque) {
1593 struct VncState *vs = (struct VncState *)opaque;
1595 VNC_DEBUG("Handshake IO continue\n");
1596 vnc_continue_handshake(vs);
1599 #define NEED_X509_AUTH(vs) \
1600 ((vs)->subauth == VNC_AUTH_VENCRYPT_X509NONE || \
1601 (vs)->subauth == VNC_AUTH_VENCRYPT_X509VNC || \
1602 (vs)->subauth == VNC_AUTH_VENCRYPT_X509PLAIN)
1605 static int vnc_start_tls(struct VncState *vs) {
1606 static const int cert_type_priority[] = { GNUTLS_CRT_X509, 0 };
1607 static const int protocol_priority[]= { GNUTLS_TLS1_1, GNUTLS_TLS1_0, GNUTLS_SSL3, 0 };
1608 static const int kx_anon[] = {GNUTLS_KX_ANON_DH, 0};
1609 static const int kx_x509[] = {GNUTLS_KX_DHE_DSS, GNUTLS_KX_RSA, GNUTLS_KX_DHE_RSA, GNUTLS_KX_SRP, 0};
1611 VNC_DEBUG("Do TLS setup\n");
1612 if (vnc_tls_initialize() < 0) {
1613 VNC_DEBUG("Failed to init TLS\n");
1614 vnc_client_error(vs);
1617 if (vs->tls_session == NULL) {
1618 if (gnutls_init(&vs->tls_session, GNUTLS_SERVER) < 0) {
1619 vnc_client_error(vs);
1623 if (gnutls_set_default_priority(vs->tls_session) < 0) {
1624 gnutls_deinit(vs->tls_session);
1625 vs->tls_session = NULL;
1626 vnc_client_error(vs);
1630 if (gnutls_kx_set_priority(vs->tls_session, NEED_X509_AUTH(vs) ? kx_x509 : kx_anon) < 0) {
1631 gnutls_deinit(vs->tls_session);
1632 vs->tls_session = NULL;
1633 vnc_client_error(vs);
1637 if (gnutls_certificate_type_set_priority(vs->tls_session, cert_type_priority) < 0) {
1638 gnutls_deinit(vs->tls_session);
1639 vs->tls_session = NULL;
1640 vnc_client_error(vs);
1644 if (gnutls_protocol_set_priority(vs->tls_session, protocol_priority) < 0) {
1645 gnutls_deinit(vs->tls_session);
1646 vs->tls_session = NULL;
1647 vnc_client_error(vs);
1651 if (NEED_X509_AUTH(vs)) {
1652 gnutls_certificate_server_credentials x509_cred = vnc_tls_initialize_x509_cred(vs);
1654 gnutls_deinit(vs->tls_session);
1655 vs->tls_session = NULL;
1656 vnc_client_error(vs);
1659 if (gnutls_credentials_set(vs->tls_session, GNUTLS_CRD_CERTIFICATE, x509_cred) < 0) {
1660 gnutls_deinit(vs->tls_session);
1661 vs->tls_session = NULL;
1662 gnutls_certificate_free_credentials(x509_cred);
1663 vnc_client_error(vs);
1666 if (vs->x509verify) {
1667 VNC_DEBUG("Requesting a client certificate\n");
1668 gnutls_certificate_server_set_request (vs->tls_session, GNUTLS_CERT_REQUEST);
1672 gnutls_anon_server_credentials anon_cred = vnc_tls_initialize_anon_cred();
1674 gnutls_deinit(vs->tls_session);
1675 vs->tls_session = NULL;
1676 vnc_client_error(vs);
1679 if (gnutls_credentials_set(vs->tls_session, GNUTLS_CRD_ANON, anon_cred) < 0) {
1680 gnutls_deinit(vs->tls_session);
1681 vs->tls_session = NULL;
1682 gnutls_anon_free_server_credentials(anon_cred);
1683 vnc_client_error(vs);
1688 gnutls_transport_set_ptr(vs->tls_session, (gnutls_transport_ptr_t)vs);
1689 gnutls_transport_set_push_function(vs->tls_session, vnc_tls_push);
1690 gnutls_transport_set_pull_function(vs->tls_session, vnc_tls_pull);
1693 VNC_DEBUG("Start TLS handshake process\n");
1694 return vnc_continue_handshake(vs);
1697 static int protocol_client_vencrypt_auth(VncState *vs, char *data, size_t len)
1699 int auth = read_u32(data, 0);
1701 if (auth != vs->subauth) {
1702 VNC_DEBUG("Rejecting auth %d\n", auth);
1703 vnc_write_u8(vs, 0); /* Reject auth */
1705 vnc_client_error(vs);
1707 VNC_DEBUG("Accepting auth %d, starting handshake\n", auth);
1708 vnc_write_u8(vs, 1); /* Accept auth */
1711 if (vnc_start_tls(vs) < 0) {
1712 VNC_DEBUG("Failed to complete TLS\n");
1716 if (vs->wiremode == VNC_WIREMODE_TLS) {
1717 VNC_DEBUG("Starting VeNCrypt subauth\n");
1718 return start_auth_vencrypt_subauth(vs);
1720 VNC_DEBUG("TLS handshake blocked\n");
1727 static int protocol_client_vencrypt_init(VncState *vs, char *data, size_t len)
1731 VNC_DEBUG("Unsupported VeNCrypt protocol %d.%d\n", (int)data[0], (int)data[1]);
1732 vnc_write_u8(vs, 1); /* Reject version */
1734 vnc_client_error(vs);
1736 VNC_DEBUG("Sending allowed auth %d\n", vs->subauth);
1737 vnc_write_u8(vs, 0); /* Accept version */
1738 vnc_write_u8(vs, 1); /* Number of sub-auths */
1739 vnc_write_u32(vs, vs->subauth); /* The supported auth */
1741 vnc_read_when(vs, protocol_client_vencrypt_auth, 4);
1746 static int start_auth_vencrypt(VncState *vs)
1748 /* Send VeNCrypt version 0.2 */
1749 vnc_write_u8(vs, 0);
1750 vnc_write_u8(vs, 2);
1752 vnc_read_when(vs, protocol_client_vencrypt_init, 2);
1755 #endif /* CONFIG_VNC_TLS */
1757 static int protocol_client_auth(VncState *vs, char *data, size_t len)
1759 /* We only advertise 1 auth scheme at a time, so client
1760 * must pick the one we sent. Verify this */
1761 if (data[0] != vs->auth) { /* Reject auth */
1762 VNC_DEBUG("Reject auth %d\n", (int)data[0]);
1763 vnc_write_u32(vs, 1);
1764 if (vs->minor >= 8) {
1765 static const char err[] = "Authentication failed";
1766 vnc_write_u32(vs, sizeof(err));
1767 vnc_write(vs, err, sizeof(err));
1769 vnc_client_error(vs);
1770 } else { /* Accept requested auth */
1771 VNC_DEBUG("Client requested auth %d\n", (int)data[0]);
1774 VNC_DEBUG("Accept auth none\n");
1775 vnc_write_u32(vs, 0); /* Accept auth completion */
1776 vnc_read_when(vs, protocol_client_init, 1);
1780 VNC_DEBUG("Start VNC auth\n");
1781 return start_auth_vnc(vs);
1784 case VNC_AUTH_VENCRYPT:
1785 VNC_DEBUG("Accept VeNCrypt auth\n");;
1786 return start_auth_vencrypt(vs);
1787 #endif /* CONFIG_VNC_TLS */
1789 default: /* Should not be possible, but just in case */
1790 VNC_DEBUG("Reject auth %d\n", vs->auth);
1791 vnc_write_u8(vs, 1);
1792 if (vs->minor >= 8) {
1793 static const char err[] = "Authentication failed";
1794 vnc_write_u32(vs, sizeof(err));
1795 vnc_write(vs, err, sizeof(err));
1797 vnc_client_error(vs);
1803 static int protocol_version(VncState *vs, char *version, size_t len)
1807 memcpy(local, version, 12);
1810 if (sscanf(local, "RFB %03d.%03d\n", &vs->major, &vs->minor) != 2) {
1811 VNC_DEBUG("Malformed protocol version %s\n", local);
1812 vnc_client_error(vs);
1815 VNC_DEBUG("Client request protocol version %d.%d\n", vs->major, vs->minor);
1816 if (vs->major != 3 ||
1821 VNC_DEBUG("Unsupported client version\n");
1822 vnc_write_u32(vs, VNC_AUTH_INVALID);
1824 vnc_client_error(vs);
1827 /* Some broken client report v3.5 which spec requires to be treated
1828 * as equivalent to v3.3 by servers
1833 if (vs->minor == 3) {
1834 if (vs->auth == VNC_AUTH_NONE) {
1835 VNC_DEBUG("Tell client auth none\n");
1836 vnc_write_u32(vs, vs->auth);
1838 vnc_read_when(vs, protocol_client_init, 1);
1839 } else if (vs->auth == VNC_AUTH_VNC) {
1840 VNC_DEBUG("Tell client VNC auth\n");
1841 vnc_write_u32(vs, vs->auth);
1845 VNC_DEBUG("Unsupported auth %d for protocol 3.3\n", vs->auth);
1846 vnc_write_u32(vs, VNC_AUTH_INVALID);
1848 vnc_client_error(vs);
1851 VNC_DEBUG("Telling client we support auth %d\n", vs->auth);
1852 vnc_write_u8(vs, 1); /* num auth */
1853 vnc_write_u8(vs, vs->auth);
1854 vnc_read_when(vs, protocol_client_auth, 1);
1861 static void vnc_listen_read(void *opaque)
1863 VncState *vs = opaque;
1864 struct sockaddr_in addr;
1865 socklen_t addrlen = sizeof(addr);
1867 vs->csock = accept(vs->lsock, (struct sockaddr *)&addr, &addrlen);
1868 if (vs->csock != -1) {
1869 VNC_DEBUG("New client on socket %d\n", vs->csock);
1870 socket_set_nonblock(vs->csock);
1871 qemu_set_fd_handler2(vs->csock, NULL, vnc_client_read, NULL, opaque);
1872 vnc_write(vs, "RFB 003.008\n", 12);
1874 vnc_read_when(vs, protocol_version, 12);
1875 memset(vs->old_data, 0, vs->ds->linesize * vs->ds->height);
1876 memset(vs->dirty_row, 0xFF, sizeof(vs->dirty_row));
1878 vs->has_hextile = 0;
1879 vs->ds->dpy_copy = NULL;
1883 extern int parse_host_port(struct sockaddr_in *saddr, const char *str);
1885 void vnc_display_init(DisplayState *ds)
1889 vs = qemu_mallocz(sizeof(VncState));
1896 vs->password = NULL;
1906 if (!keyboard_layout)
1907 keyboard_layout = "en-us";
1909 vs->kbd_layout = init_keyboard_layout(keyboard_layout);
1910 if (!vs->kbd_layout)
1913 vs->ds->data = NULL;
1914 vs->ds->dpy_update = vnc_dpy_update;
1915 vs->ds->dpy_resize = vnc_dpy_resize;
1916 vs->ds->dpy_refresh = vnc_dpy_refresh;
1918 memset(vs->dirty_row, 0xFF, sizeof(vs->dirty_row));
1920 vnc_dpy_resize(vs->ds, 640, 400);
1924 static int vnc_set_x509_credential(VncState *vs,
1925 const char *certdir,
1926 const char *filename,
1937 if (!(*cred = qemu_malloc(strlen(certdir) + strlen(filename) + 2)))
1940 strcpy(*cred, certdir);
1942 strcat(*cred, filename);
1944 VNC_DEBUG("Check %s\n", *cred);
1945 if (stat(*cred, &sb) < 0) {
1948 if (ignoreMissing && errno == ENOENT)
1956 static int vnc_set_x509_credential_dir(VncState *vs,
1957 const char *certdir)
1959 if (vnc_set_x509_credential(vs, certdir, X509_CA_CERT_FILE, &vs->x509cacert, 0) < 0)
1961 if (vnc_set_x509_credential(vs, certdir, X509_CA_CRL_FILE, &vs->x509cacrl, 1) < 0)
1963 if (vnc_set_x509_credential(vs, certdir, X509_SERVER_CERT_FILE, &vs->x509cert, 0) < 0)
1965 if (vnc_set_x509_credential(vs, certdir, X509_SERVER_KEY_FILE, &vs->x509key, 0) < 0)
1971 qemu_free(vs->x509cacert);
1972 qemu_free(vs->x509cacrl);
1973 qemu_free(vs->x509cert);
1974 qemu_free(vs->x509key);
1975 vs->x509cacert = vs->x509cacrl = vs->x509cert = vs->x509key = NULL;
1978 #endif /* CONFIG_VNC_TLS */
1980 void vnc_display_close(DisplayState *ds)
1982 VncState *vs = ds ? (VncState *)ds->opaque : vnc_state;
1985 qemu_free(vs->display);
1988 if (vs->lsock != -1) {
1989 qemu_set_fd_handler2(vs->lsock, NULL, NULL, NULL, NULL);
1993 if (vs->csock != -1) {
1994 qemu_set_fd_handler2(vs->csock, NULL, NULL, NULL, NULL);
1995 closesocket(vs->csock);
1997 buffer_reset(&vs->input);
1998 buffer_reset(&vs->output);
1999 vs->need_update = 0;
2001 if (vs->tls_session) {
2002 gnutls_deinit(vs->tls_session);
2003 vs->tls_session = NULL;
2005 vs->wiremode = VNC_WIREMODE_CLEAR;
2006 #endif /* CONFIG_VNC_TLS */
2008 vs->auth = VNC_AUTH_INVALID;
2010 vs->subauth = VNC_AUTH_INVALID;
2015 int vnc_display_password(DisplayState *ds, const char *password)
2017 VncState *vs = ds ? (VncState *)ds->opaque : vnc_state;
2020 qemu_free(vs->password);
2021 vs->password = NULL;
2023 if (password && password[0]) {
2024 if (!(vs->password = qemu_strdup(password)))
2031 int vnc_display_open(DisplayState *ds, const char *display)
2033 struct sockaddr *addr;
2034 struct sockaddr_in iaddr;
2036 struct sockaddr_un uaddr;
2038 int reuse_addr, ret;
2041 VncState *vs = ds ? (VncState *)ds->opaque : vnc_state;
2042 const char *options;
2045 int tls = 0, x509 = 0;
2048 vnc_display_close(ds);
2049 if (strcmp(display, "none") == 0)
2052 if (!(vs->display = strdup(display)))
2056 while ((options = strchr(options, ','))) {
2058 if (strncmp(options, "password", 8) == 0) {
2059 password = 1; /* Require password auth */
2061 } else if (strncmp(options, "tls", 3) == 0) {
2062 tls = 1; /* Require TLS */
2063 } else if (strncmp(options, "x509", 4) == 0) {
2065 x509 = 1; /* Require x509 certificates */
2066 if (strncmp(options, "x509verify", 10) == 0)
2067 vs->x509verify = 1; /* ...and verify client certs */
2069 /* Now check for 'x509=/some/path' postfix
2070 * and use that to setup x509 certificate/key paths */
2071 start = strchr(options, '=');
2072 end = strchr(options, ',');
2073 if (start && (!end || (start < end))) {
2074 int len = end ? end-(start+1) : strlen(start+1);
2075 char *path = qemu_malloc(len+1);
2076 strncpy(path, start+1, len);
2078 VNC_DEBUG("Trying certificate path '%s'\n", path);
2079 if (vnc_set_x509_credential_dir(vs, path) < 0) {
2080 fprintf(stderr, "Failed to find x509 certificates/keys in %s\n", path);
2082 qemu_free(vs->display);
2088 fprintf(stderr, "No certificate path provided\n");
2089 qemu_free(vs->display);
2100 vs->auth = VNC_AUTH_VENCRYPT;
2102 VNC_DEBUG("Initializing VNC server with x509 password auth\n");
2103 vs->subauth = VNC_AUTH_VENCRYPT_X509VNC;
2105 VNC_DEBUG("Initializing VNC server with TLS password auth\n");
2106 vs->subauth = VNC_AUTH_VENCRYPT_TLSVNC;
2110 VNC_DEBUG("Initializing VNC server with password auth\n");
2111 vs->auth = VNC_AUTH_VNC;
2113 vs->subauth = VNC_AUTH_INVALID;
2119 vs->auth = VNC_AUTH_VENCRYPT;
2121 VNC_DEBUG("Initializing VNC server with x509 no auth\n");
2122 vs->subauth = VNC_AUTH_VENCRYPT_X509NONE;
2124 VNC_DEBUG("Initializing VNC server with TLS no auth\n");
2125 vs->subauth = VNC_AUTH_VENCRYPT_TLSNONE;
2129 VNC_DEBUG("Initializing VNC server with no auth\n");
2130 vs->auth = VNC_AUTH_NONE;
2132 vs->subauth = VNC_AUTH_INVALID;
2137 if (strstart(display, "unix:", &p)) {
2138 addr = (struct sockaddr *)&uaddr;
2139 addrlen = sizeof(uaddr);
2141 vs->lsock = socket(PF_UNIX, SOCK_STREAM, 0);
2142 if (vs->lsock == -1) {
2143 fprintf(stderr, "Could not create socket\n");
2149 uaddr.sun_family = AF_UNIX;
2150 memset(uaddr.sun_path, 0, 108);
2151 snprintf(uaddr.sun_path, 108, "%s", p);
2153 unlink(uaddr.sun_path);
2157 addr = (struct sockaddr *)&iaddr;
2158 addrlen = sizeof(iaddr);
2160 if (parse_host_port(&iaddr, display) < 0) {
2161 fprintf(stderr, "Could not parse VNC address\n");
2167 iaddr.sin_port = htons(ntohs(iaddr.sin_port) + 5900);
2169 vs->lsock = socket(PF_INET, SOCK_STREAM, 0);
2170 if (vs->lsock == -1) {
2171 fprintf(stderr, "Could not create socket\n");
2178 ret = setsockopt(vs->lsock, SOL_SOCKET, SO_REUSEADDR,
2179 (const char *)&reuse_addr, sizeof(reuse_addr));
2181 fprintf(stderr, "setsockopt() failed\n");
2190 if (bind(vs->lsock, addr, addrlen) == -1) {
2191 fprintf(stderr, "bind() failed\n");
2199 if (listen(vs->lsock, 1) == -1) {
2200 fprintf(stderr, "listen() failed\n");
2208 return qemu_set_fd_handler2(vs->lsock, vnc_listen_poll, vnc_listen_read, NULL, vs);