2 * QEMU VNC display driver
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 uint32_t dlen = read_u32(data, 4);
1204 client_cut_text(vs, read_u32(data, 4), data + 8);
1207 printf("Msg: %d\n", data[0]);
1208 vnc_client_error(vs);
1212 vnc_read_when(vs, protocol_client_msg, 1);
1216 static int protocol_client_init(VncState *vs, char *data, size_t len)
1218 char pad[3] = { 0, 0, 0 };
1222 vs->width = vs->ds->width;
1223 vs->height = vs->ds->height;
1224 vnc_write_u16(vs, vs->ds->width);
1225 vnc_write_u16(vs, vs->ds->height);
1227 vnc_write_u8(vs, vs->depth * 8); /* bits-per-pixel */
1228 vnc_write_u8(vs, vs->depth * 8); /* depth */
1229 #ifdef WORDS_BIGENDIAN
1230 vnc_write_u8(vs, 1); /* big-endian-flag */
1232 vnc_write_u8(vs, 0); /* big-endian-flag */
1234 vnc_write_u8(vs, 1); /* true-color-flag */
1235 if (vs->depth == 4) {
1236 vnc_write_u16(vs, 0xFF); /* red-max */
1237 vnc_write_u16(vs, 0xFF); /* green-max */
1238 vnc_write_u16(vs, 0xFF); /* blue-max */
1239 vnc_write_u8(vs, 16); /* red-shift */
1240 vnc_write_u8(vs, 8); /* green-shift */
1241 vnc_write_u8(vs, 0); /* blue-shift */
1242 vs->send_hextile_tile = send_hextile_tile_32;
1243 } else if (vs->depth == 2) {
1244 vnc_write_u16(vs, 31); /* red-max */
1245 vnc_write_u16(vs, 63); /* green-max */
1246 vnc_write_u16(vs, 31); /* blue-max */
1247 vnc_write_u8(vs, 11); /* red-shift */
1248 vnc_write_u8(vs, 5); /* green-shift */
1249 vnc_write_u8(vs, 0); /* blue-shift */
1250 vs->send_hextile_tile = send_hextile_tile_16;
1251 } else if (vs->depth == 1) {
1252 /* XXX: change QEMU pixel 8 bit pixel format to match the VNC one ? */
1253 vnc_write_u16(vs, 7); /* red-max */
1254 vnc_write_u16(vs, 7); /* green-max */
1255 vnc_write_u16(vs, 3); /* blue-max */
1256 vnc_write_u8(vs, 5); /* red-shift */
1257 vnc_write_u8(vs, 2); /* green-shift */
1258 vnc_write_u8(vs, 0); /* blue-shift */
1259 vs->send_hextile_tile = send_hextile_tile_8;
1261 vs->write_pixels = vnc_write_pixels_copy;
1263 vnc_write(vs, pad, 3); /* padding */
1266 size = snprintf(buf, sizeof(buf), "QEMU (%s)", qemu_name);
1268 size = snprintf(buf, sizeof(buf), "QEMU");
1270 vnc_write_u32(vs, size);
1271 vnc_write(vs, buf, size);
1274 vnc_read_when(vs, protocol_client_msg, 1);
1279 static void make_challenge(VncState *vs)
1283 srand(time(NULL)+getpid()+getpid()*987654+rand());
1285 for (i = 0 ; i < sizeof(vs->challenge) ; i++)
1286 vs->challenge[i] = (int) (256.0*rand()/(RAND_MAX+1.0));
1289 static int protocol_client_auth_vnc(VncState *vs, char *data, size_t len)
1291 char response[VNC_AUTH_CHALLENGE_SIZE];
1295 if (!vs->password || !vs->password[0]) {
1296 VNC_DEBUG("No password configured on server");
1297 vnc_write_u32(vs, 1); /* Reject auth */
1298 if (vs->minor >= 8) {
1299 static const char err[] = "Authentication failed";
1300 vnc_write_u32(vs, sizeof(err));
1301 vnc_write(vs, err, sizeof(err));
1304 vnc_client_error(vs);
1308 memcpy(response, vs->challenge, VNC_AUTH_CHALLENGE_SIZE);
1310 /* Calculate the expected challenge response */
1311 pwlen = strlen(vs->password);
1312 for (i=0; i<sizeof(key); i++)
1313 key[i] = i<pwlen ? vs->password[i] : 0;
1315 for (j = 0; j < VNC_AUTH_CHALLENGE_SIZE; j += 8)
1316 des(response+j, response+j);
1318 /* Compare expected vs actual challenge response */
1319 if (memcmp(response, data, VNC_AUTH_CHALLENGE_SIZE) != 0) {
1320 VNC_DEBUG("Client challenge reponse did not match\n");
1321 vnc_write_u32(vs, 1); /* Reject auth */
1322 if (vs->minor >= 8) {
1323 static const char err[] = "Authentication failed";
1324 vnc_write_u32(vs, sizeof(err));
1325 vnc_write(vs, err, sizeof(err));
1328 vnc_client_error(vs);
1330 VNC_DEBUG("Accepting VNC challenge response\n");
1331 vnc_write_u32(vs, 0); /* Accept auth */
1334 vnc_read_when(vs, protocol_client_init, 1);
1339 static int start_auth_vnc(VncState *vs)
1342 /* Send client a 'random' challenge */
1343 vnc_write(vs, vs->challenge, sizeof(vs->challenge));
1346 vnc_read_when(vs, protocol_client_auth_vnc, sizeof(vs->challenge));
1352 #define DH_BITS 1024
1353 static gnutls_dh_params_t dh_params;
1355 static int vnc_tls_initialize(void)
1357 static int tlsinitialized = 0;
1362 if (gnutls_global_init () < 0)
1365 /* XXX ought to re-generate diffie-hellmen params periodically */
1366 if (gnutls_dh_params_init (&dh_params) < 0)
1368 if (gnutls_dh_params_generate2 (dh_params, DH_BITS) < 0)
1372 gnutls_global_set_log_level(10);
1373 gnutls_global_set_log_function(vnc_debug_gnutls_log);
1381 static gnutls_anon_server_credentials vnc_tls_initialize_anon_cred(void)
1383 gnutls_anon_server_credentials anon_cred;
1386 if ((ret = gnutls_anon_allocate_server_credentials(&anon_cred)) < 0) {
1387 VNC_DEBUG("Cannot allocate credentials %s\n", gnutls_strerror(ret));
1391 gnutls_anon_set_server_dh_params(anon_cred, dh_params);
1397 static gnutls_certificate_credentials_t vnc_tls_initialize_x509_cred(VncState *vs)
1399 gnutls_certificate_credentials_t x509_cred;
1402 if (!vs->x509cacert) {
1403 VNC_DEBUG("No CA x509 certificate specified\n");
1406 if (!vs->x509cert) {
1407 VNC_DEBUG("No server x509 certificate specified\n");
1411 VNC_DEBUG("No server private key specified\n");
1415 if ((ret = gnutls_certificate_allocate_credentials(&x509_cred)) < 0) {
1416 VNC_DEBUG("Cannot allocate credentials %s\n", gnutls_strerror(ret));
1419 if ((ret = gnutls_certificate_set_x509_trust_file(x509_cred,
1421 GNUTLS_X509_FMT_PEM)) < 0) {
1422 VNC_DEBUG("Cannot load CA certificate %s\n", gnutls_strerror(ret));
1423 gnutls_certificate_free_credentials(x509_cred);
1427 if ((ret = gnutls_certificate_set_x509_key_file (x509_cred,
1430 GNUTLS_X509_FMT_PEM)) < 0) {
1431 VNC_DEBUG("Cannot load certificate & key %s\n", gnutls_strerror(ret));
1432 gnutls_certificate_free_credentials(x509_cred);
1436 if (vs->x509cacrl) {
1437 if ((ret = gnutls_certificate_set_x509_crl_file(x509_cred,
1439 GNUTLS_X509_FMT_PEM)) < 0) {
1440 VNC_DEBUG("Cannot load CRL %s\n", gnutls_strerror(ret));
1441 gnutls_certificate_free_credentials(x509_cred);
1446 gnutls_certificate_set_dh_params (x509_cred, dh_params);
1451 static int vnc_validate_certificate(struct VncState *vs)
1454 unsigned int status;
1455 const gnutls_datum_t *certs;
1456 unsigned int nCerts, i;
1459 VNC_DEBUG("Validating client certificate\n");
1460 if ((ret = gnutls_certificate_verify_peers2 (vs->tls_session, &status)) < 0) {
1461 VNC_DEBUG("Verify failed %s\n", gnutls_strerror(ret));
1465 if ((now = time(NULL)) == ((time_t)-1)) {
1470 if (status & GNUTLS_CERT_INVALID)
1471 VNC_DEBUG("The certificate is not trusted.\n");
1473 if (status & GNUTLS_CERT_SIGNER_NOT_FOUND)
1474 VNC_DEBUG("The certificate hasn't got a known issuer.\n");
1476 if (status & GNUTLS_CERT_REVOKED)
1477 VNC_DEBUG("The certificate has been revoked.\n");
1479 if (status & GNUTLS_CERT_INSECURE_ALGORITHM)
1480 VNC_DEBUG("The certificate uses an insecure algorithm\n");
1484 VNC_DEBUG("Certificate is valid!\n");
1487 /* Only support x509 for now */
1488 if (gnutls_certificate_type_get(vs->tls_session) != GNUTLS_CRT_X509)
1491 if (!(certs = gnutls_certificate_get_peers(vs->tls_session, &nCerts)))
1494 for (i = 0 ; i < nCerts ; i++) {
1495 gnutls_x509_crt_t cert;
1496 VNC_DEBUG ("Checking certificate chain %d\n", i);
1497 if (gnutls_x509_crt_init (&cert) < 0)
1500 if (gnutls_x509_crt_import(cert, &certs[i], GNUTLS_X509_FMT_DER) < 0) {
1501 gnutls_x509_crt_deinit (cert);
1505 if (gnutls_x509_crt_get_expiration_time (cert) < now) {
1506 VNC_DEBUG("The certificate has expired\n");
1507 gnutls_x509_crt_deinit (cert);
1511 if (gnutls_x509_crt_get_activation_time (cert) > now) {
1512 VNC_DEBUG("The certificate is not yet activated\n");
1513 gnutls_x509_crt_deinit (cert);
1517 if (gnutls_x509_crt_get_activation_time (cert) > now) {
1518 VNC_DEBUG("The certificate is not yet activated\n");
1519 gnutls_x509_crt_deinit (cert);
1523 gnutls_x509_crt_deinit (cert);
1530 static int start_auth_vencrypt_subauth(VncState *vs)
1532 switch (vs->subauth) {
1533 case VNC_AUTH_VENCRYPT_TLSNONE:
1534 case VNC_AUTH_VENCRYPT_X509NONE:
1535 VNC_DEBUG("Accept TLS auth none\n");
1536 vnc_write_u32(vs, 0); /* Accept auth completion */
1537 vnc_read_when(vs, protocol_client_init, 1);
1540 case VNC_AUTH_VENCRYPT_TLSVNC:
1541 case VNC_AUTH_VENCRYPT_X509VNC:
1542 VNC_DEBUG("Start TLS auth VNC\n");
1543 return start_auth_vnc(vs);
1545 default: /* Should not be possible, but just in case */
1546 VNC_DEBUG("Reject auth %d\n", vs->auth);
1547 vnc_write_u8(vs, 1);
1548 if (vs->minor >= 8) {
1549 static const char err[] = "Unsupported authentication type";
1550 vnc_write_u32(vs, sizeof(err));
1551 vnc_write(vs, err, sizeof(err));
1553 vnc_client_error(vs);
1559 static void vnc_handshake_io(void *opaque);
1561 static int vnc_continue_handshake(struct VncState *vs) {
1564 if ((ret = gnutls_handshake(vs->tls_session)) < 0) {
1565 if (!gnutls_error_is_fatal(ret)) {
1566 VNC_DEBUG("Handshake interrupted (blocking)\n");
1567 if (!gnutls_record_get_direction(vs->tls_session))
1568 qemu_set_fd_handler(vs->csock, vnc_handshake_io, NULL, vs);
1570 qemu_set_fd_handler(vs->csock, NULL, vnc_handshake_io, vs);
1573 VNC_DEBUG("Handshake failed %s\n", gnutls_strerror(ret));
1574 vnc_client_error(vs);
1578 if (vs->x509verify) {
1579 if (vnc_validate_certificate(vs) < 0) {
1580 VNC_DEBUG("Client verification failed\n");
1581 vnc_client_error(vs);
1584 VNC_DEBUG("Client verification passed\n");
1588 VNC_DEBUG("Handshake done, switching to TLS data mode\n");
1589 vs->wiremode = VNC_WIREMODE_TLS;
1590 qemu_set_fd_handler2(vs->csock, NULL, vnc_client_read, vnc_client_write, vs);
1592 return start_auth_vencrypt_subauth(vs);
1595 static void vnc_handshake_io(void *opaque) {
1596 struct VncState *vs = (struct VncState *)opaque;
1598 VNC_DEBUG("Handshake IO continue\n");
1599 vnc_continue_handshake(vs);
1602 #define NEED_X509_AUTH(vs) \
1603 ((vs)->subauth == VNC_AUTH_VENCRYPT_X509NONE || \
1604 (vs)->subauth == VNC_AUTH_VENCRYPT_X509VNC || \
1605 (vs)->subauth == VNC_AUTH_VENCRYPT_X509PLAIN)
1608 static int vnc_start_tls(struct VncState *vs) {
1609 static const int cert_type_priority[] = { GNUTLS_CRT_X509, 0 };
1610 static const int protocol_priority[]= { GNUTLS_TLS1_1, GNUTLS_TLS1_0, GNUTLS_SSL3, 0 };
1611 static const int kx_anon[] = {GNUTLS_KX_ANON_DH, 0};
1612 static const int kx_x509[] = {GNUTLS_KX_DHE_DSS, GNUTLS_KX_RSA, GNUTLS_KX_DHE_RSA, GNUTLS_KX_SRP, 0};
1614 VNC_DEBUG("Do TLS setup\n");
1615 if (vnc_tls_initialize() < 0) {
1616 VNC_DEBUG("Failed to init TLS\n");
1617 vnc_client_error(vs);
1620 if (vs->tls_session == NULL) {
1621 if (gnutls_init(&vs->tls_session, GNUTLS_SERVER) < 0) {
1622 vnc_client_error(vs);
1626 if (gnutls_set_default_priority(vs->tls_session) < 0) {
1627 gnutls_deinit(vs->tls_session);
1628 vs->tls_session = NULL;
1629 vnc_client_error(vs);
1633 if (gnutls_kx_set_priority(vs->tls_session, NEED_X509_AUTH(vs) ? kx_x509 : kx_anon) < 0) {
1634 gnutls_deinit(vs->tls_session);
1635 vs->tls_session = NULL;
1636 vnc_client_error(vs);
1640 if (gnutls_certificate_type_set_priority(vs->tls_session, cert_type_priority) < 0) {
1641 gnutls_deinit(vs->tls_session);
1642 vs->tls_session = NULL;
1643 vnc_client_error(vs);
1647 if (gnutls_protocol_set_priority(vs->tls_session, protocol_priority) < 0) {
1648 gnutls_deinit(vs->tls_session);
1649 vs->tls_session = NULL;
1650 vnc_client_error(vs);
1654 if (NEED_X509_AUTH(vs)) {
1655 gnutls_certificate_server_credentials x509_cred = vnc_tls_initialize_x509_cred(vs);
1657 gnutls_deinit(vs->tls_session);
1658 vs->tls_session = NULL;
1659 vnc_client_error(vs);
1662 if (gnutls_credentials_set(vs->tls_session, GNUTLS_CRD_CERTIFICATE, x509_cred) < 0) {
1663 gnutls_deinit(vs->tls_session);
1664 vs->tls_session = NULL;
1665 gnutls_certificate_free_credentials(x509_cred);
1666 vnc_client_error(vs);
1669 if (vs->x509verify) {
1670 VNC_DEBUG("Requesting a client certificate\n");
1671 gnutls_certificate_server_set_request (vs->tls_session, GNUTLS_CERT_REQUEST);
1675 gnutls_anon_server_credentials anon_cred = vnc_tls_initialize_anon_cred();
1677 gnutls_deinit(vs->tls_session);
1678 vs->tls_session = NULL;
1679 vnc_client_error(vs);
1682 if (gnutls_credentials_set(vs->tls_session, GNUTLS_CRD_ANON, anon_cred) < 0) {
1683 gnutls_deinit(vs->tls_session);
1684 vs->tls_session = NULL;
1685 gnutls_anon_free_server_credentials(anon_cred);
1686 vnc_client_error(vs);
1691 gnutls_transport_set_ptr(vs->tls_session, (gnutls_transport_ptr_t)vs);
1692 gnutls_transport_set_push_function(vs->tls_session, vnc_tls_push);
1693 gnutls_transport_set_pull_function(vs->tls_session, vnc_tls_pull);
1696 VNC_DEBUG("Start TLS handshake process\n");
1697 return vnc_continue_handshake(vs);
1700 static int protocol_client_vencrypt_auth(VncState *vs, char *data, size_t len)
1702 int auth = read_u32(data, 0);
1704 if (auth != vs->subauth) {
1705 VNC_DEBUG("Rejecting auth %d\n", auth);
1706 vnc_write_u8(vs, 0); /* Reject auth */
1708 vnc_client_error(vs);
1710 VNC_DEBUG("Accepting auth %d, starting handshake\n", auth);
1711 vnc_write_u8(vs, 1); /* Accept auth */
1714 if (vnc_start_tls(vs) < 0) {
1715 VNC_DEBUG("Failed to complete TLS\n");
1719 if (vs->wiremode == VNC_WIREMODE_TLS) {
1720 VNC_DEBUG("Starting VeNCrypt subauth\n");
1721 return start_auth_vencrypt_subauth(vs);
1723 VNC_DEBUG("TLS handshake blocked\n");
1730 static int protocol_client_vencrypt_init(VncState *vs, char *data, size_t len)
1734 VNC_DEBUG("Unsupported VeNCrypt protocol %d.%d\n", (int)data[0], (int)data[1]);
1735 vnc_write_u8(vs, 1); /* Reject version */
1737 vnc_client_error(vs);
1739 VNC_DEBUG("Sending allowed auth %d\n", vs->subauth);
1740 vnc_write_u8(vs, 0); /* Accept version */
1741 vnc_write_u8(vs, 1); /* Number of sub-auths */
1742 vnc_write_u32(vs, vs->subauth); /* The supported auth */
1744 vnc_read_when(vs, protocol_client_vencrypt_auth, 4);
1749 static int start_auth_vencrypt(VncState *vs)
1751 /* Send VeNCrypt version 0.2 */
1752 vnc_write_u8(vs, 0);
1753 vnc_write_u8(vs, 2);
1755 vnc_read_when(vs, protocol_client_vencrypt_init, 2);
1758 #endif /* CONFIG_VNC_TLS */
1760 static int protocol_client_auth(VncState *vs, char *data, size_t len)
1762 /* We only advertise 1 auth scheme at a time, so client
1763 * must pick the one we sent. Verify this */
1764 if (data[0] != vs->auth) { /* Reject auth */
1765 VNC_DEBUG("Reject auth %d\n", (int)data[0]);
1766 vnc_write_u32(vs, 1);
1767 if (vs->minor >= 8) {
1768 static const char err[] = "Authentication failed";
1769 vnc_write_u32(vs, sizeof(err));
1770 vnc_write(vs, err, sizeof(err));
1772 vnc_client_error(vs);
1773 } else { /* Accept requested auth */
1774 VNC_DEBUG("Client requested auth %d\n", (int)data[0]);
1777 VNC_DEBUG("Accept auth none\n");
1778 vnc_write_u32(vs, 0); /* Accept auth completion */
1779 vnc_read_when(vs, protocol_client_init, 1);
1783 VNC_DEBUG("Start VNC auth\n");
1784 return start_auth_vnc(vs);
1787 case VNC_AUTH_VENCRYPT:
1788 VNC_DEBUG("Accept VeNCrypt auth\n");;
1789 return start_auth_vencrypt(vs);
1790 #endif /* CONFIG_VNC_TLS */
1792 default: /* Should not be possible, but just in case */
1793 VNC_DEBUG("Reject auth %d\n", vs->auth);
1794 vnc_write_u8(vs, 1);
1795 if (vs->minor >= 8) {
1796 static const char err[] = "Authentication failed";
1797 vnc_write_u32(vs, sizeof(err));
1798 vnc_write(vs, err, sizeof(err));
1800 vnc_client_error(vs);
1806 static int protocol_version(VncState *vs, char *version, size_t len)
1810 memcpy(local, version, 12);
1813 if (sscanf(local, "RFB %03d.%03d\n", &vs->major, &vs->minor) != 2) {
1814 VNC_DEBUG("Malformed protocol version %s\n", local);
1815 vnc_client_error(vs);
1818 VNC_DEBUG("Client request protocol version %d.%d\n", vs->major, vs->minor);
1819 if (vs->major != 3 ||
1825 VNC_DEBUG("Unsupported client version\n");
1826 vnc_write_u32(vs, VNC_AUTH_INVALID);
1828 vnc_client_error(vs);
1831 /* Some broken clients report v3.4 or v3.5, which spec requires to be treated
1832 * as equivalent to v3.3 by servers
1834 if (vs->minor == 4 || vs->minor == 5)
1837 if (vs->minor == 3) {
1838 if (vs->auth == VNC_AUTH_NONE) {
1839 VNC_DEBUG("Tell client auth none\n");
1840 vnc_write_u32(vs, vs->auth);
1842 vnc_read_when(vs, protocol_client_init, 1);
1843 } else if (vs->auth == VNC_AUTH_VNC) {
1844 VNC_DEBUG("Tell client VNC auth\n");
1845 vnc_write_u32(vs, vs->auth);
1849 VNC_DEBUG("Unsupported auth %d for protocol 3.3\n", vs->auth);
1850 vnc_write_u32(vs, VNC_AUTH_INVALID);
1852 vnc_client_error(vs);
1855 VNC_DEBUG("Telling client we support auth %d\n", vs->auth);
1856 vnc_write_u8(vs, 1); /* num auth */
1857 vnc_write_u8(vs, vs->auth);
1858 vnc_read_when(vs, protocol_client_auth, 1);
1865 static void vnc_listen_read(void *opaque)
1867 VncState *vs = opaque;
1868 struct sockaddr_in addr;
1869 socklen_t addrlen = sizeof(addr);
1871 vs->csock = accept(vs->lsock, (struct sockaddr *)&addr, &addrlen);
1872 if (vs->csock != -1) {
1873 VNC_DEBUG("New client on socket %d\n", vs->csock);
1874 socket_set_nonblock(vs->csock);
1875 qemu_set_fd_handler2(vs->csock, NULL, vnc_client_read, NULL, opaque);
1876 vnc_write(vs, "RFB 003.008\n", 12);
1878 vnc_read_when(vs, protocol_version, 12);
1879 memset(vs->old_data, 0, vs->ds->linesize * vs->ds->height);
1880 memset(vs->dirty_row, 0xFF, sizeof(vs->dirty_row));
1882 vs->has_hextile = 0;
1883 vs->ds->dpy_copy = NULL;
1887 extern int parse_host_port(struct sockaddr_in *saddr, const char *str);
1889 void vnc_display_init(DisplayState *ds)
1893 vs = qemu_mallocz(sizeof(VncState));
1900 vs->password = NULL;
1910 if (!keyboard_layout)
1911 keyboard_layout = "en-us";
1913 vs->kbd_layout = init_keyboard_layout(keyboard_layout);
1914 if (!vs->kbd_layout)
1917 vs->ds->data = NULL;
1918 vs->ds->dpy_update = vnc_dpy_update;
1919 vs->ds->dpy_resize = vnc_dpy_resize;
1920 vs->ds->dpy_refresh = vnc_dpy_refresh;
1922 memset(vs->dirty_row, 0xFF, sizeof(vs->dirty_row));
1924 vnc_dpy_resize(vs->ds, 640, 400);
1928 static int vnc_set_x509_credential(VncState *vs,
1929 const char *certdir,
1930 const char *filename,
1941 if (!(*cred = qemu_malloc(strlen(certdir) + strlen(filename) + 2)))
1944 strcpy(*cred, certdir);
1946 strcat(*cred, filename);
1948 VNC_DEBUG("Check %s\n", *cred);
1949 if (stat(*cred, &sb) < 0) {
1952 if (ignoreMissing && errno == ENOENT)
1960 static int vnc_set_x509_credential_dir(VncState *vs,
1961 const char *certdir)
1963 if (vnc_set_x509_credential(vs, certdir, X509_CA_CERT_FILE, &vs->x509cacert, 0) < 0)
1965 if (vnc_set_x509_credential(vs, certdir, X509_CA_CRL_FILE, &vs->x509cacrl, 1) < 0)
1967 if (vnc_set_x509_credential(vs, certdir, X509_SERVER_CERT_FILE, &vs->x509cert, 0) < 0)
1969 if (vnc_set_x509_credential(vs, certdir, X509_SERVER_KEY_FILE, &vs->x509key, 0) < 0)
1975 qemu_free(vs->x509cacert);
1976 qemu_free(vs->x509cacrl);
1977 qemu_free(vs->x509cert);
1978 qemu_free(vs->x509key);
1979 vs->x509cacert = vs->x509cacrl = vs->x509cert = vs->x509key = NULL;
1982 #endif /* CONFIG_VNC_TLS */
1984 void vnc_display_close(DisplayState *ds)
1986 VncState *vs = ds ? (VncState *)ds->opaque : vnc_state;
1989 qemu_free(vs->display);
1992 if (vs->lsock != -1) {
1993 qemu_set_fd_handler2(vs->lsock, NULL, NULL, NULL, NULL);
1997 if (vs->csock != -1) {
1998 qemu_set_fd_handler2(vs->csock, NULL, NULL, NULL, NULL);
1999 closesocket(vs->csock);
2001 buffer_reset(&vs->input);
2002 buffer_reset(&vs->output);
2003 vs->need_update = 0;
2005 if (vs->tls_session) {
2006 gnutls_deinit(vs->tls_session);
2007 vs->tls_session = NULL;
2009 vs->wiremode = VNC_WIREMODE_CLEAR;
2010 #endif /* CONFIG_VNC_TLS */
2012 vs->auth = VNC_AUTH_INVALID;
2014 vs->subauth = VNC_AUTH_INVALID;
2019 int vnc_display_password(DisplayState *ds, const char *password)
2021 VncState *vs = ds ? (VncState *)ds->opaque : vnc_state;
2024 qemu_free(vs->password);
2025 vs->password = NULL;
2027 if (password && password[0]) {
2028 if (!(vs->password = qemu_strdup(password)))
2035 int vnc_display_open(DisplayState *ds, const char *display)
2037 struct sockaddr *addr;
2038 struct sockaddr_in iaddr;
2040 struct sockaddr_un uaddr;
2042 int reuse_addr, ret;
2045 VncState *vs = ds ? (VncState *)ds->opaque : vnc_state;
2046 const char *options;
2049 int tls = 0, x509 = 0;
2052 vnc_display_close(ds);
2053 if (strcmp(display, "none") == 0)
2056 if (!(vs->display = strdup(display)))
2060 while ((options = strchr(options, ','))) {
2062 if (strncmp(options, "password", 8) == 0) {
2063 password = 1; /* Require password auth */
2065 } else if (strncmp(options, "tls", 3) == 0) {
2066 tls = 1; /* Require TLS */
2067 } else if (strncmp(options, "x509", 4) == 0) {
2069 x509 = 1; /* Require x509 certificates */
2070 if (strncmp(options, "x509verify", 10) == 0)
2071 vs->x509verify = 1; /* ...and verify client certs */
2073 /* Now check for 'x509=/some/path' postfix
2074 * and use that to setup x509 certificate/key paths */
2075 start = strchr(options, '=');
2076 end = strchr(options, ',');
2077 if (start && (!end || (start < end))) {
2078 int len = end ? end-(start+1) : strlen(start+1);
2079 char *path = qemu_malloc(len+1);
2080 strncpy(path, start+1, len);
2082 VNC_DEBUG("Trying certificate path '%s'\n", path);
2083 if (vnc_set_x509_credential_dir(vs, path) < 0) {
2084 fprintf(stderr, "Failed to find x509 certificates/keys in %s\n", path);
2086 qemu_free(vs->display);
2092 fprintf(stderr, "No certificate path provided\n");
2093 qemu_free(vs->display);
2104 vs->auth = VNC_AUTH_VENCRYPT;
2106 VNC_DEBUG("Initializing VNC server with x509 password auth\n");
2107 vs->subauth = VNC_AUTH_VENCRYPT_X509VNC;
2109 VNC_DEBUG("Initializing VNC server with TLS password auth\n");
2110 vs->subauth = VNC_AUTH_VENCRYPT_TLSVNC;
2114 VNC_DEBUG("Initializing VNC server with password auth\n");
2115 vs->auth = VNC_AUTH_VNC;
2117 vs->subauth = VNC_AUTH_INVALID;
2123 vs->auth = VNC_AUTH_VENCRYPT;
2125 VNC_DEBUG("Initializing VNC server with x509 no auth\n");
2126 vs->subauth = VNC_AUTH_VENCRYPT_X509NONE;
2128 VNC_DEBUG("Initializing VNC server with TLS no auth\n");
2129 vs->subauth = VNC_AUTH_VENCRYPT_TLSNONE;
2133 VNC_DEBUG("Initializing VNC server with no auth\n");
2134 vs->auth = VNC_AUTH_NONE;
2136 vs->subauth = VNC_AUTH_INVALID;
2141 if (strstart(display, "unix:", &p)) {
2142 addr = (struct sockaddr *)&uaddr;
2143 addrlen = sizeof(uaddr);
2145 vs->lsock = socket(PF_UNIX, SOCK_STREAM, 0);
2146 if (vs->lsock == -1) {
2147 fprintf(stderr, "Could not create socket\n");
2153 uaddr.sun_family = AF_UNIX;
2154 memset(uaddr.sun_path, 0, 108);
2155 snprintf(uaddr.sun_path, 108, "%s", p);
2157 unlink(uaddr.sun_path);
2161 addr = (struct sockaddr *)&iaddr;
2162 addrlen = sizeof(iaddr);
2164 if (parse_host_port(&iaddr, display) < 0) {
2165 fprintf(stderr, "Could not parse VNC address\n");
2171 iaddr.sin_port = htons(ntohs(iaddr.sin_port) + 5900);
2173 vs->lsock = socket(PF_INET, SOCK_STREAM, 0);
2174 if (vs->lsock == -1) {
2175 fprintf(stderr, "Could not create socket\n");
2182 ret = setsockopt(vs->lsock, SOL_SOCKET, SO_REUSEADDR,
2183 (const char *)&reuse_addr, sizeof(reuse_addr));
2185 fprintf(stderr, "setsockopt() failed\n");
2194 if (bind(vs->lsock, addr, addrlen) == -1) {
2195 fprintf(stderr, "bind() failed\n");
2203 if (listen(vs->lsock, 1) == -1) {
2204 fprintf(stderr, "listen() failed\n");
2212 return qemu_set_fd_handler2(vs->lsock, vnc_listen_poll, vnc_listen_read, NULL, vs);