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7d510b8c FB |
1 | /* |
2 | * QEMU VNC display driver | |
3 | * | |
4 | * Copyright (C) 2006 Anthony Liguori <anthony@codemonkey.ws> | |
5 | * Copyright (C) 2006 Fabrice Bellard | |
6 | * | |
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: | |
13 | * | |
14 | * The above copyright notice and this permission notice shall be included in | |
15 | * all copies or substantial portions of the Software. | |
16 | * | |
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 | |
23 | * THE SOFTWARE. | |
24 | */ | |
25 | ||
24236869 | 26 | #include "vl.h" |
6ca957f0 | 27 | #include "qemu_socket.h" |
24236869 FB |
28 | |
29 | #define VNC_REFRESH_INTERVAL (1000 / 30) | |
30 | ||
31 | #include "vnc_keysym.h" | |
32 | #include "keymaps.c" | |
70848515 TS |
33 | #include "d3des.h" |
34 | ||
8d5d2d4c TS |
35 | #if CONFIG_VNC_TLS |
36 | #include <gnutls/gnutls.h> | |
37 | #include <gnutls/x509.h> | |
38 | #endif /* CONFIG_VNC_TLS */ | |
70848515 | 39 | |
8d5d2d4c TS |
40 | // #define _VNC_DEBUG 1 |
41 | ||
42 | #if _VNC_DEBUG | |
70848515 | 43 | #define VNC_DEBUG(fmt, ...) do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0) |
8d5d2d4c TS |
44 | |
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); | |
49 | } | |
50 | #endif /* CONFIG_VNC_TLS && _VNC_DEBUG */ | |
70848515 TS |
51 | #else |
52 | #define VNC_DEBUG(fmt, ...) do { } while (0) | |
53 | #endif | |
24236869 | 54 | |
8d5d2d4c | 55 | |
24236869 FB |
56 | typedef struct Buffer |
57 | { | |
58 | size_t capacity; | |
59 | size_t offset; | |
60 | char *buffer; | |
61 | } Buffer; | |
62 | ||
63 | typedef struct VncState VncState; | |
64 | ||
65 | typedef int VncReadEvent(VncState *vs, char *data, size_t len); | |
66 | ||
3512779a FB |
67 | typedef void VncWritePixels(VncState *vs, void *data, int size); |
68 | ||
69 | typedef void VncSendHextileTile(VncState *vs, | |
70 | int x, int y, int w, int h, | |
71 | uint32_t *last_bg, | |
72 | uint32_t *last_fg, | |
73 | int *has_bg, int *has_fg); | |
74 | ||
99589bdc FB |
75 | #define VNC_MAX_WIDTH 2048 |
76 | #define VNC_MAX_HEIGHT 2048 | |
77 | #define VNC_DIRTY_WORDS (VNC_MAX_WIDTH / (16 * 32)) | |
78 | ||
70848515 TS |
79 | #define VNC_AUTH_CHALLENGE_SIZE 16 |
80 | ||
81 | enum { | |
82 | VNC_AUTH_INVALID = 0, | |
83 | VNC_AUTH_NONE = 1, | |
84 | VNC_AUTH_VNC = 2, | |
85 | VNC_AUTH_RA2 = 5, | |
86 | VNC_AUTH_RA2NE = 6, | |
87 | VNC_AUTH_TIGHT = 16, | |
88 | VNC_AUTH_ULTRA = 17, | |
89 | VNC_AUTH_TLS = 18, | |
90 | VNC_AUTH_VENCRYPT = 19 | |
91 | }; | |
92 | ||
8d5d2d4c TS |
93 | #if CONFIG_VNC_TLS |
94 | enum { | |
95 | VNC_WIREMODE_CLEAR, | |
96 | VNC_WIREMODE_TLS, | |
97 | }; | |
98 | ||
99 | enum { | |
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, | |
107 | }; | |
108 | #endif /* CONFIG_VNC_TLS */ | |
109 | ||
24236869 FB |
110 | struct VncState |
111 | { | |
112 | QEMUTimer *timer; | |
113 | int lsock; | |
114 | int csock; | |
115 | DisplayState *ds; | |
116 | int need_update; | |
117 | int width; | |
118 | int height; | |
99589bdc | 119 | uint32_t dirty_row[VNC_MAX_HEIGHT][VNC_DIRTY_WORDS]; |
24236869 | 120 | char *old_data; |
3512779a | 121 | int depth; /* internal VNC frame buffer byte per pixel */ |
24236869 FB |
122 | int has_resize; |
123 | int has_hextile; | |
564c337e FB |
124 | int has_pointer_type_change; |
125 | int absolute; | |
126 | int last_x; | |
127 | int last_y; | |
128 | ||
70848515 TS |
129 | int major; |
130 | int minor; | |
131 | ||
71cab5ca | 132 | char *display; |
70848515 TS |
133 | char *password; |
134 | int auth; | |
8d5d2d4c TS |
135 | #if CONFIG_VNC_TLS |
136 | int subauth; | |
137 | #endif | |
70848515 | 138 | char challenge[VNC_AUTH_CHALLENGE_SIZE]; |
a9ce8590 | 139 | |
8d5d2d4c TS |
140 | #if CONFIG_VNC_TLS |
141 | int wiremode; | |
142 | gnutls_session_t tls_session; | |
143 | #endif | |
144 | ||
24236869 FB |
145 | Buffer output; |
146 | Buffer input; | |
147 | kbd_layout_t *kbd_layout; | |
3512779a FB |
148 | /* current output mode information */ |
149 | VncWritePixels *write_pixels; | |
150 | VncSendHextileTile *send_hextile_tile; | |
151 | int pix_bpp, pix_big_endian; | |
152 | int red_shift, red_max, red_shift1; | |
153 | int green_shift, green_max, green_shift1; | |
154 | int blue_shift, blue_max, blue_shift1; | |
24236869 FB |
155 | |
156 | VncReadEvent *read_handler; | |
157 | size_t read_handler_expect; | |
64f5a135 FB |
158 | /* input */ |
159 | uint8_t modifiers_state[256]; | |
24236869 FB |
160 | }; |
161 | ||
a9ce8590 FB |
162 | static VncState *vnc_state; /* needed for info vnc */ |
163 | ||
164 | void do_info_vnc(void) | |
165 | { | |
166 | if (vnc_state == NULL) | |
167 | term_printf("VNC server disabled\n"); | |
168 | else { | |
169 | term_printf("VNC server active on: "); | |
170 | term_print_filename(vnc_state->display); | |
171 | term_printf("\n"); | |
172 | ||
173 | if (vnc_state->csock == -1) | |
174 | term_printf("No client connected\n"); | |
175 | else | |
176 | term_printf("Client connected\n"); | |
177 | } | |
178 | } | |
179 | ||
24236869 FB |
180 | /* TODO |
181 | 1) Get the queue working for IO. | |
182 | 2) there is some weirdness when using the -S option (the screen is grey | |
183 | and not totally invalidated | |
184 | 3) resolutions > 1024 | |
185 | */ | |
186 | ||
187 | static void vnc_write(VncState *vs, const void *data, size_t len); | |
188 | static void vnc_write_u32(VncState *vs, uint32_t value); | |
189 | static void vnc_write_s32(VncState *vs, int32_t value); | |
190 | static void vnc_write_u16(VncState *vs, uint16_t value); | |
191 | static void vnc_write_u8(VncState *vs, uint8_t value); | |
192 | static void vnc_flush(VncState *vs); | |
193 | static void vnc_update_client(void *opaque); | |
194 | static void vnc_client_read(void *opaque); | |
195 | ||
99589bdc FB |
196 | static inline void vnc_set_bit(uint32_t *d, int k) |
197 | { | |
198 | d[k >> 5] |= 1 << (k & 0x1f); | |
199 | } | |
200 | ||
201 | static inline void vnc_clear_bit(uint32_t *d, int k) | |
202 | { | |
203 | d[k >> 5] &= ~(1 << (k & 0x1f)); | |
204 | } | |
205 | ||
206 | static inline void vnc_set_bits(uint32_t *d, int n, int nb_words) | |
207 | { | |
208 | int j; | |
209 | ||
210 | j = 0; | |
211 | while (n >= 32) { | |
212 | d[j++] = -1; | |
213 | n -= 32; | |
214 | } | |
215 | if (n > 0) | |
216 | d[j++] = (1 << n) - 1; | |
217 | while (j < nb_words) | |
218 | d[j++] = 0; | |
219 | } | |
220 | ||
221 | static inline int vnc_get_bit(const uint32_t *d, int k) | |
222 | { | |
223 | return (d[k >> 5] >> (k & 0x1f)) & 1; | |
224 | } | |
225 | ||
226 | static inline int vnc_and_bits(const uint32_t *d1, const uint32_t *d2, | |
227 | int nb_words) | |
228 | { | |
229 | int i; | |
230 | for(i = 0; i < nb_words; i++) { | |
231 | if ((d1[i] & d2[i]) != 0) | |
232 | return 1; | |
233 | } | |
234 | return 0; | |
235 | } | |
236 | ||
24236869 FB |
237 | static void vnc_dpy_update(DisplayState *ds, int x, int y, int w, int h) |
238 | { | |
239 | VncState *vs = ds->opaque; | |
240 | int i; | |
241 | ||
242 | h += y; | |
243 | ||
244 | for (; y < h; y++) | |
245 | for (i = 0; i < w; i += 16) | |
99589bdc | 246 | vnc_set_bit(vs->dirty_row[y], (x + i) / 16); |
24236869 FB |
247 | } |
248 | ||
249 | static void vnc_framebuffer_update(VncState *vs, int x, int y, int w, int h, | |
250 | int32_t encoding) | |
251 | { | |
252 | vnc_write_u16(vs, x); | |
253 | vnc_write_u16(vs, y); | |
254 | vnc_write_u16(vs, w); | |
255 | vnc_write_u16(vs, h); | |
256 | ||
257 | vnc_write_s32(vs, encoding); | |
258 | } | |
259 | ||
260 | static void vnc_dpy_resize(DisplayState *ds, int w, int h) | |
261 | { | |
73e14b62 | 262 | int size_changed; |
24236869 FB |
263 | VncState *vs = ds->opaque; |
264 | ||
265 | ds->data = realloc(ds->data, w * h * vs->depth); | |
266 | vs->old_data = realloc(vs->old_data, w * h * vs->depth); | |
267 | ||
268 | if (ds->data == NULL || vs->old_data == NULL) { | |
269 | fprintf(stderr, "vnc: memory allocation failed\n"); | |
270 | exit(1); | |
271 | } | |
272 | ||
273 | ds->depth = vs->depth * 8; | |
73e14b62 | 274 | size_changed = ds->width != w || ds->height != h; |
24236869 FB |
275 | ds->width = w; |
276 | ds->height = h; | |
277 | ds->linesize = w * vs->depth; | |
73e14b62 | 278 | if (vs->csock != -1 && vs->has_resize && size_changed) { |
24236869 FB |
279 | vnc_write_u8(vs, 0); /* msg id */ |
280 | vnc_write_u8(vs, 0); | |
281 | vnc_write_u16(vs, 1); /* number of rects */ | |
282 | vnc_framebuffer_update(vs, 0, 0, ds->width, ds->height, -223); | |
283 | vnc_flush(vs); | |
284 | vs->width = ds->width; | |
285 | vs->height = ds->height; | |
286 | } | |
287 | } | |
288 | ||
3512779a FB |
289 | /* fastest code */ |
290 | static void vnc_write_pixels_copy(VncState *vs, void *pixels, int size) | |
291 | { | |
292 | vnc_write(vs, pixels, size); | |
293 | } | |
294 | ||
295 | /* slowest but generic code. */ | |
296 | static void vnc_convert_pixel(VncState *vs, uint8_t *buf, uint32_t v) | |
297 | { | |
298 | unsigned int r, g, b; | |
299 | ||
300 | r = (v >> vs->red_shift1) & vs->red_max; | |
301 | g = (v >> vs->green_shift1) & vs->green_max; | |
302 | b = (v >> vs->blue_shift1) & vs->blue_max; | |
303 | v = (r << vs->red_shift) | | |
304 | (g << vs->green_shift) | | |
305 | (b << vs->blue_shift); | |
306 | switch(vs->pix_bpp) { | |
307 | case 1: | |
308 | buf[0] = v; | |
309 | break; | |
310 | case 2: | |
311 | if (vs->pix_big_endian) { | |
312 | buf[0] = v >> 8; | |
313 | buf[1] = v; | |
314 | } else { | |
315 | buf[1] = v >> 8; | |
316 | buf[0] = v; | |
317 | } | |
318 | break; | |
319 | default: | |
320 | case 4: | |
321 | if (vs->pix_big_endian) { | |
322 | buf[0] = v >> 24; | |
323 | buf[1] = v >> 16; | |
324 | buf[2] = v >> 8; | |
325 | buf[3] = v; | |
326 | } else { | |
327 | buf[3] = v >> 24; | |
328 | buf[2] = v >> 16; | |
329 | buf[1] = v >> 8; | |
330 | buf[0] = v; | |
331 | } | |
332 | break; | |
333 | } | |
334 | } | |
335 | ||
336 | static void vnc_write_pixels_generic(VncState *vs, void *pixels1, int size) | |
337 | { | |
338 | uint32_t *pixels = pixels1; | |
339 | uint8_t buf[4]; | |
340 | int n, i; | |
341 | ||
342 | n = size >> 2; | |
343 | for(i = 0; i < n; i++) { | |
344 | vnc_convert_pixel(vs, buf, pixels[i]); | |
345 | vnc_write(vs, buf, vs->pix_bpp); | |
346 | } | |
347 | } | |
348 | ||
24236869 FB |
349 | static void send_framebuffer_update_raw(VncState *vs, int x, int y, int w, int h) |
350 | { | |
351 | int i; | |
352 | char *row; | |
353 | ||
354 | vnc_framebuffer_update(vs, x, y, w, h, 0); | |
355 | ||
356 | row = vs->ds->data + y * vs->ds->linesize + x * vs->depth; | |
357 | for (i = 0; i < h; i++) { | |
3512779a | 358 | vs->write_pixels(vs, row, w * vs->depth); |
24236869 FB |
359 | row += vs->ds->linesize; |
360 | } | |
361 | } | |
362 | ||
363 | static void hextile_enc_cord(uint8_t *ptr, int x, int y, int w, int h) | |
364 | { | |
365 | ptr[0] = ((x & 0x0F) << 4) | (y & 0x0F); | |
366 | ptr[1] = (((w - 1) & 0x0F) << 4) | ((h - 1) & 0x0F); | |
367 | } | |
368 | ||
369 | #define BPP 8 | |
370 | #include "vnchextile.h" | |
371 | #undef BPP | |
372 | ||
373 | #define BPP 16 | |
374 | #include "vnchextile.h" | |
375 | #undef BPP | |
376 | ||
377 | #define BPP 32 | |
378 | #include "vnchextile.h" | |
379 | #undef BPP | |
380 | ||
3512779a FB |
381 | #define GENERIC |
382 | #define BPP 32 | |
383 | #include "vnchextile.h" | |
384 | #undef BPP | |
385 | #undef GENERIC | |
386 | ||
24236869 FB |
387 | static void send_framebuffer_update_hextile(VncState *vs, int x, int y, int w, int h) |
388 | { | |
389 | int i, j; | |
390 | int has_fg, has_bg; | |
391 | uint32_t last_fg32, last_bg32; | |
24236869 FB |
392 | |
393 | vnc_framebuffer_update(vs, x, y, w, h, 5); | |
394 | ||
395 | has_fg = has_bg = 0; | |
396 | for (j = y; j < (y + h); j += 16) { | |
397 | for (i = x; i < (x + w); i += 16) { | |
3512779a FB |
398 | vs->send_hextile_tile(vs, i, j, |
399 | MIN(16, x + w - i), MIN(16, y + h - j), | |
400 | &last_bg32, &last_fg32, &has_bg, &has_fg); | |
24236869 FB |
401 | } |
402 | } | |
403 | } | |
404 | ||
405 | static void send_framebuffer_update(VncState *vs, int x, int y, int w, int h) | |
406 | { | |
407 | if (vs->has_hextile) | |
408 | send_framebuffer_update_hextile(vs, x, y, w, h); | |
409 | else | |
410 | send_framebuffer_update_raw(vs, x, y, w, h); | |
411 | } | |
412 | ||
413 | static void vnc_copy(DisplayState *ds, int src_x, int src_y, int dst_x, int dst_y, int w, int h) | |
414 | { | |
415 | int src, dst; | |
416 | char *src_row; | |
417 | char *dst_row; | |
418 | char *old_row; | |
419 | int y = 0; | |
420 | int pitch = ds->linesize; | |
421 | VncState *vs = ds->opaque; | |
422 | ||
423 | vnc_update_client(vs); | |
424 | ||
425 | if (dst_y > src_y) { | |
426 | y = h - 1; | |
427 | pitch = -pitch; | |
428 | } | |
429 | ||
430 | src = (ds->linesize * (src_y + y) + vs->depth * src_x); | |
431 | dst = (ds->linesize * (dst_y + y) + vs->depth * dst_x); | |
432 | ||
433 | src_row = ds->data + src; | |
434 | dst_row = ds->data + dst; | |
435 | old_row = vs->old_data + dst; | |
436 | ||
437 | for (y = 0; y < h; y++) { | |
438 | memmove(old_row, src_row, w * vs->depth); | |
439 | memmove(dst_row, src_row, w * vs->depth); | |
440 | src_row += pitch; | |
441 | dst_row += pitch; | |
442 | old_row += pitch; | |
443 | } | |
444 | ||
445 | vnc_write_u8(vs, 0); /* msg id */ | |
446 | vnc_write_u8(vs, 0); | |
447 | vnc_write_u16(vs, 1); /* number of rects */ | |
448 | vnc_framebuffer_update(vs, dst_x, dst_y, w, h, 1); | |
449 | vnc_write_u16(vs, src_x); | |
450 | vnc_write_u16(vs, src_y); | |
451 | vnc_flush(vs); | |
452 | } | |
453 | ||
454 | static int find_dirty_height(VncState *vs, int y, int last_x, int x) | |
455 | { | |
456 | int h; | |
457 | ||
458 | for (h = 1; h < (vs->height - y); h++) { | |
459 | int tmp_x; | |
99589bdc | 460 | if (!vnc_get_bit(vs->dirty_row[y + h], last_x)) |
24236869 FB |
461 | break; |
462 | for (tmp_x = last_x; tmp_x < x; tmp_x++) | |
99589bdc | 463 | vnc_clear_bit(vs->dirty_row[y + h], tmp_x); |
24236869 FB |
464 | } |
465 | ||
466 | return h; | |
467 | } | |
468 | ||
469 | static void vnc_update_client(void *opaque) | |
470 | { | |
471 | VncState *vs = opaque; | |
472 | ||
473 | if (vs->need_update && vs->csock != -1) { | |
474 | int y; | |
475 | char *row; | |
476 | char *old_row; | |
99589bdc | 477 | uint32_t width_mask[VNC_DIRTY_WORDS]; |
24236869 FB |
478 | int n_rectangles; |
479 | int saved_offset; | |
480 | int has_dirty = 0; | |
481 | ||
99589bdc | 482 | vnc_set_bits(width_mask, (vs->width / 16), VNC_DIRTY_WORDS); |
24236869 FB |
483 | |
484 | /* Walk through the dirty map and eliminate tiles that | |
485 | really aren't dirty */ | |
486 | row = vs->ds->data; | |
487 | old_row = vs->old_data; | |
488 | ||
489 | for (y = 0; y < vs->height; y++) { | |
99589bdc | 490 | if (vnc_and_bits(vs->dirty_row[y], width_mask, VNC_DIRTY_WORDS)) { |
24236869 FB |
491 | int x; |
492 | char *ptr, *old_ptr; | |
493 | ||
494 | ptr = row; | |
495 | old_ptr = old_row; | |
496 | ||
497 | for (x = 0; x < vs->ds->width; x += 16) { | |
498 | if (memcmp(old_ptr, ptr, 16 * vs->depth) == 0) { | |
99589bdc | 499 | vnc_clear_bit(vs->dirty_row[y], (x / 16)); |
24236869 FB |
500 | } else { |
501 | has_dirty = 1; | |
502 | memcpy(old_ptr, ptr, 16 * vs->depth); | |
503 | } | |
504 | ||
505 | ptr += 16 * vs->depth; | |
506 | old_ptr += 16 * vs->depth; | |
507 | } | |
508 | } | |
509 | ||
510 | row += vs->ds->linesize; | |
511 | old_row += vs->ds->linesize; | |
512 | } | |
513 | ||
514 | if (!has_dirty) { | |
515 | qemu_mod_timer(vs->timer, qemu_get_clock(rt_clock) + VNC_REFRESH_INTERVAL); | |
516 | return; | |
517 | } | |
518 | ||
519 | /* Count rectangles */ | |
520 | n_rectangles = 0; | |
521 | vnc_write_u8(vs, 0); /* msg id */ | |
522 | vnc_write_u8(vs, 0); | |
523 | saved_offset = vs->output.offset; | |
524 | vnc_write_u16(vs, 0); | |
525 | ||
526 | for (y = 0; y < vs->height; y++) { | |
527 | int x; | |
528 | int last_x = -1; | |
529 | for (x = 0; x < vs->width / 16; x++) { | |
99589bdc | 530 | if (vnc_get_bit(vs->dirty_row[y], x)) { |
24236869 FB |
531 | if (last_x == -1) { |
532 | last_x = x; | |
533 | } | |
99589bdc | 534 | vnc_clear_bit(vs->dirty_row[y], x); |
24236869 FB |
535 | } else { |
536 | if (last_x != -1) { | |
537 | int h = find_dirty_height(vs, y, last_x, x); | |
538 | send_framebuffer_update(vs, last_x * 16, y, (x - last_x) * 16, h); | |
539 | n_rectangles++; | |
540 | } | |
541 | last_x = -1; | |
542 | } | |
543 | } | |
544 | if (last_x != -1) { | |
545 | int h = find_dirty_height(vs, y, last_x, x); | |
546 | send_framebuffer_update(vs, last_x * 16, y, (x - last_x) * 16, h); | |
547 | n_rectangles++; | |
548 | } | |
549 | } | |
550 | vs->output.buffer[saved_offset] = (n_rectangles >> 8) & 0xFF; | |
551 | vs->output.buffer[saved_offset + 1] = n_rectangles & 0xFF; | |
552 | vnc_flush(vs); | |
553 | ||
554 | } | |
555 | qemu_mod_timer(vs->timer, qemu_get_clock(rt_clock) + VNC_REFRESH_INTERVAL); | |
556 | } | |
557 | ||
558 | static void vnc_timer_init(VncState *vs) | |
559 | { | |
560 | if (vs->timer == NULL) { | |
561 | vs->timer = qemu_new_timer(rt_clock, vnc_update_client, vs); | |
562 | qemu_mod_timer(vs->timer, qemu_get_clock(rt_clock)); | |
563 | } | |
564 | } | |
565 | ||
566 | static void vnc_dpy_refresh(DisplayState *ds) | |
567 | { | |
568 | VncState *vs = ds->opaque; | |
569 | vnc_timer_init(vs); | |
570 | vga_hw_update(); | |
571 | } | |
572 | ||
573 | static int vnc_listen_poll(void *opaque) | |
574 | { | |
575 | VncState *vs = opaque; | |
576 | if (vs->csock == -1) | |
577 | return 1; | |
578 | return 0; | |
579 | } | |
580 | ||
581 | static void buffer_reserve(Buffer *buffer, size_t len) | |
582 | { | |
583 | if ((buffer->capacity - buffer->offset) < len) { | |
584 | buffer->capacity += (len + 1024); | |
585 | buffer->buffer = realloc(buffer->buffer, buffer->capacity); | |
586 | if (buffer->buffer == NULL) { | |
587 | fprintf(stderr, "vnc: out of memory\n"); | |
588 | exit(1); | |
589 | } | |
590 | } | |
591 | } | |
592 | ||
593 | static int buffer_empty(Buffer *buffer) | |
594 | { | |
595 | return buffer->offset == 0; | |
596 | } | |
597 | ||
598 | static char *buffer_end(Buffer *buffer) | |
599 | { | |
600 | return buffer->buffer + buffer->offset; | |
601 | } | |
602 | ||
603 | static void buffer_reset(Buffer *buffer) | |
604 | { | |
605 | buffer->offset = 0; | |
606 | } | |
607 | ||
608 | static void buffer_append(Buffer *buffer, const void *data, size_t len) | |
609 | { | |
610 | memcpy(buffer->buffer + buffer->offset, data, len); | |
611 | buffer->offset += len; | |
612 | } | |
613 | ||
6ca957f0 | 614 | static int vnc_client_io_error(VncState *vs, int ret, int last_errno) |
24236869 FB |
615 | { |
616 | if (ret == 0 || ret == -1) { | |
6ca957f0 | 617 | if (ret == -1 && (last_errno == EINTR || last_errno == EAGAIN)) |
24236869 FB |
618 | return 0; |
619 | ||
8d5d2d4c | 620 | VNC_DEBUG("Closing down client sock %d %d\n", ret, ret < 0 ? last_errno : 0); |
24236869 | 621 | qemu_set_fd_handler2(vs->csock, NULL, NULL, NULL, NULL); |
6ca957f0 | 622 | closesocket(vs->csock); |
24236869 FB |
623 | vs->csock = -1; |
624 | buffer_reset(&vs->input); | |
625 | buffer_reset(&vs->output); | |
626 | vs->need_update = 0; | |
8d5d2d4c TS |
627 | #if CONFIG_VNC_TLS |
628 | if (vs->tls_session) { | |
629 | gnutls_deinit(vs->tls_session); | |
630 | vs->tls_session = NULL; | |
631 | } | |
632 | vs->wiremode = VNC_WIREMODE_CLEAR; | |
633 | #endif /* CONFIG_VNC_TLS */ | |
24236869 FB |
634 | return 0; |
635 | } | |
636 | return ret; | |
637 | } | |
638 | ||
639 | static void vnc_client_error(VncState *vs) | |
640 | { | |
6ca957f0 | 641 | vnc_client_io_error(vs, -1, EINVAL); |
24236869 FB |
642 | } |
643 | ||
644 | static void vnc_client_write(void *opaque) | |
645 | { | |
ceb5caaf | 646 | long ret; |
24236869 FB |
647 | VncState *vs = opaque; |
648 | ||
8d5d2d4c TS |
649 | #if CONFIG_VNC_TLS |
650 | if (vs->tls_session) { | |
651 | ret = gnutls_write(vs->tls_session, vs->output.buffer, vs->output.offset); | |
652 | if (ret < 0) { | |
653 | if (ret == GNUTLS_E_AGAIN) | |
654 | errno = EAGAIN; | |
655 | else | |
656 | errno = EIO; | |
657 | ret = -1; | |
658 | } | |
659 | } else | |
660 | #endif /* CONFIG_VNC_TLS */ | |
661 | ret = send(vs->csock, vs->output.buffer, vs->output.offset, 0); | |
6ca957f0 | 662 | ret = vnc_client_io_error(vs, ret, socket_error()); |
24236869 FB |
663 | if (!ret) |
664 | return; | |
665 | ||
666 | memmove(vs->output.buffer, vs->output.buffer + ret, (vs->output.offset - ret)); | |
667 | vs->output.offset -= ret; | |
668 | ||
669 | if (vs->output.offset == 0) { | |
670 | qemu_set_fd_handler2(vs->csock, NULL, vnc_client_read, NULL, vs); | |
671 | } | |
672 | } | |
673 | ||
674 | static void vnc_read_when(VncState *vs, VncReadEvent *func, size_t expecting) | |
675 | { | |
676 | vs->read_handler = func; | |
677 | vs->read_handler_expect = expecting; | |
678 | } | |
679 | ||
680 | static void vnc_client_read(void *opaque) | |
681 | { | |
682 | VncState *vs = opaque; | |
ceb5caaf | 683 | long ret; |
24236869 FB |
684 | |
685 | buffer_reserve(&vs->input, 4096); | |
686 | ||
8d5d2d4c TS |
687 | #if CONFIG_VNC_TLS |
688 | if (vs->tls_session) { | |
689 | ret = gnutls_read(vs->tls_session, buffer_end(&vs->input), 4096); | |
690 | if (ret < 0) { | |
691 | if (ret == GNUTLS_E_AGAIN) | |
692 | errno = EAGAIN; | |
693 | else | |
694 | errno = EIO; | |
695 | ret = -1; | |
696 | } | |
697 | } else | |
698 | #endif /* CONFIG_VNC_TLS */ | |
699 | ret = recv(vs->csock, buffer_end(&vs->input), 4096, 0); | |
6ca957f0 | 700 | ret = vnc_client_io_error(vs, ret, socket_error()); |
24236869 FB |
701 | if (!ret) |
702 | return; | |
703 | ||
704 | vs->input.offset += ret; | |
705 | ||
706 | while (vs->read_handler && vs->input.offset >= vs->read_handler_expect) { | |
707 | size_t len = vs->read_handler_expect; | |
708 | int ret; | |
709 | ||
710 | ret = vs->read_handler(vs, vs->input.buffer, len); | |
711 | if (vs->csock == -1) | |
712 | return; | |
713 | ||
714 | if (!ret) { | |
715 | memmove(vs->input.buffer, vs->input.buffer + len, (vs->input.offset - len)); | |
716 | vs->input.offset -= len; | |
717 | } else { | |
718 | vs->read_handler_expect = ret; | |
719 | } | |
720 | } | |
721 | } | |
722 | ||
723 | static void vnc_write(VncState *vs, const void *data, size_t len) | |
724 | { | |
725 | buffer_reserve(&vs->output, len); | |
726 | ||
727 | if (buffer_empty(&vs->output)) { | |
728 | qemu_set_fd_handler2(vs->csock, NULL, vnc_client_read, vnc_client_write, vs); | |
729 | } | |
730 | ||
731 | buffer_append(&vs->output, data, len); | |
732 | } | |
733 | ||
734 | static void vnc_write_s32(VncState *vs, int32_t value) | |
735 | { | |
736 | vnc_write_u32(vs, *(uint32_t *)&value); | |
737 | } | |
738 | ||
739 | static void vnc_write_u32(VncState *vs, uint32_t value) | |
740 | { | |
741 | uint8_t buf[4]; | |
742 | ||
743 | buf[0] = (value >> 24) & 0xFF; | |
744 | buf[1] = (value >> 16) & 0xFF; | |
745 | buf[2] = (value >> 8) & 0xFF; | |
746 | buf[3] = value & 0xFF; | |
747 | ||
748 | vnc_write(vs, buf, 4); | |
749 | } | |
750 | ||
751 | static void vnc_write_u16(VncState *vs, uint16_t value) | |
752 | { | |
64f5a135 | 753 | uint8_t buf[2]; |
24236869 FB |
754 | |
755 | buf[0] = (value >> 8) & 0xFF; | |
756 | buf[1] = value & 0xFF; | |
757 | ||
758 | vnc_write(vs, buf, 2); | |
759 | } | |
760 | ||
761 | static void vnc_write_u8(VncState *vs, uint8_t value) | |
762 | { | |
763 | vnc_write(vs, (char *)&value, 1); | |
764 | } | |
765 | ||
766 | static void vnc_flush(VncState *vs) | |
767 | { | |
768 | if (vs->output.offset) | |
769 | vnc_client_write(vs); | |
770 | } | |
771 | ||
64f5a135 | 772 | static uint8_t read_u8(uint8_t *data, size_t offset) |
24236869 FB |
773 | { |
774 | return data[offset]; | |
775 | } | |
776 | ||
64f5a135 | 777 | static uint16_t read_u16(uint8_t *data, size_t offset) |
24236869 FB |
778 | { |
779 | return ((data[offset] & 0xFF) << 8) | (data[offset + 1] & 0xFF); | |
780 | } | |
781 | ||
64f5a135 | 782 | static int32_t read_s32(uint8_t *data, size_t offset) |
24236869 FB |
783 | { |
784 | return (int32_t)((data[offset] << 24) | (data[offset + 1] << 16) | | |
785 | (data[offset + 2] << 8) | data[offset + 3]); | |
786 | } | |
787 | ||
64f5a135 | 788 | static uint32_t read_u32(uint8_t *data, size_t offset) |
24236869 FB |
789 | { |
790 | return ((data[offset] << 24) | (data[offset + 1] << 16) | | |
791 | (data[offset + 2] << 8) | data[offset + 3]); | |
792 | } | |
793 | ||
8d5d2d4c TS |
794 | #if CONFIG_VNC_TLS |
795 | ssize_t vnc_tls_push(gnutls_transport_ptr_t transport, | |
796 | const void *data, | |
797 | size_t len) { | |
798 | struct VncState *vs = (struct VncState *)transport; | |
799 | int ret; | |
800 | ||
801 | retry: | |
802 | ret = send(vs->csock, data, len, 0); | |
803 | if (ret < 0) { | |
804 | if (errno == EINTR) | |
805 | goto retry; | |
806 | return -1; | |
807 | } | |
808 | return ret; | |
809 | } | |
810 | ||
811 | ||
812 | ssize_t vnc_tls_pull(gnutls_transport_ptr_t transport, | |
813 | void *data, | |
814 | size_t len) { | |
815 | struct VncState *vs = (struct VncState *)transport; | |
816 | int ret; | |
817 | ||
818 | retry: | |
819 | ret = recv(vs->csock, data, len, 0); | |
820 | if (ret < 0) { | |
821 | if (errno == EINTR) | |
822 | goto retry; | |
823 | return -1; | |
824 | } | |
825 | return ret; | |
826 | } | |
827 | #endif /* CONFIG_VNC_TLS */ | |
828 | ||
24236869 FB |
829 | static void client_cut_text(VncState *vs, size_t len, char *text) |
830 | { | |
831 | } | |
832 | ||
564c337e FB |
833 | static void check_pointer_type_change(VncState *vs, int absolute) |
834 | { | |
835 | if (vs->has_pointer_type_change && vs->absolute != absolute) { | |
836 | vnc_write_u8(vs, 0); | |
837 | vnc_write_u8(vs, 0); | |
838 | vnc_write_u16(vs, 1); | |
839 | vnc_framebuffer_update(vs, absolute, 0, | |
840 | vs->ds->width, vs->ds->height, -257); | |
841 | vnc_flush(vs); | |
842 | } | |
843 | vs->absolute = absolute; | |
844 | } | |
845 | ||
24236869 FB |
846 | static void pointer_event(VncState *vs, int button_mask, int x, int y) |
847 | { | |
848 | int buttons = 0; | |
849 | int dz = 0; | |
850 | ||
851 | if (button_mask & 0x01) | |
852 | buttons |= MOUSE_EVENT_LBUTTON; | |
853 | if (button_mask & 0x02) | |
854 | buttons |= MOUSE_EVENT_MBUTTON; | |
855 | if (button_mask & 0x04) | |
856 | buttons |= MOUSE_EVENT_RBUTTON; | |
857 | if (button_mask & 0x08) | |
858 | dz = -1; | |
859 | if (button_mask & 0x10) | |
860 | dz = 1; | |
564c337e FB |
861 | |
862 | if (vs->absolute) { | |
24236869 FB |
863 | kbd_mouse_event(x * 0x7FFF / vs->ds->width, |
864 | y * 0x7FFF / vs->ds->height, | |
865 | dz, buttons); | |
564c337e FB |
866 | } else if (vs->has_pointer_type_change) { |
867 | x -= 0x7FFF; | |
868 | y -= 0x7FFF; | |
24236869 | 869 | |
564c337e FB |
870 | kbd_mouse_event(x, y, dz, buttons); |
871 | } else { | |
872 | if (vs->last_x != -1) | |
873 | kbd_mouse_event(x - vs->last_x, | |
874 | y - vs->last_y, | |
875 | dz, buttons); | |
876 | vs->last_x = x; | |
877 | vs->last_y = y; | |
24236869 | 878 | } |
564c337e FB |
879 | |
880 | check_pointer_type_change(vs, kbd_mouse_is_absolute()); | |
24236869 FB |
881 | } |
882 | ||
64f5a135 FB |
883 | static void reset_keys(VncState *vs) |
884 | { | |
885 | int i; | |
886 | for(i = 0; i < 256; i++) { | |
887 | if (vs->modifiers_state[i]) { | |
888 | if (i & 0x80) | |
889 | kbd_put_keycode(0xe0); | |
890 | kbd_put_keycode(i | 0x80); | |
891 | vs->modifiers_state[i] = 0; | |
892 | } | |
893 | } | |
894 | } | |
895 | ||
bdbd7676 | 896 | static void do_key_event(VncState *vs, int down, uint32_t sym) |
24236869 FB |
897 | { |
898 | int keycode; | |
899 | ||
900 | keycode = keysym2scancode(vs->kbd_layout, sym & 0xFFFF); | |
64f5a135 FB |
901 | |
902 | /* QEMU console switch */ | |
903 | switch(keycode) { | |
904 | case 0x2a: /* Left Shift */ | |
905 | case 0x36: /* Right Shift */ | |
906 | case 0x1d: /* Left CTRL */ | |
907 | case 0x9d: /* Right CTRL */ | |
908 | case 0x38: /* Left ALT */ | |
909 | case 0xb8: /* Right ALT */ | |
910 | if (down) | |
911 | vs->modifiers_state[keycode] = 1; | |
912 | else | |
913 | vs->modifiers_state[keycode] = 0; | |
914 | break; | |
915 | case 0x02 ... 0x0a: /* '1' to '9' keys */ | |
916 | if (down && vs->modifiers_state[0x1d] && vs->modifiers_state[0x38]) { | |
917 | /* Reset the modifiers sent to the current console */ | |
918 | reset_keys(vs); | |
919 | console_select(keycode - 0x02); | |
920 | return; | |
921 | } | |
922 | break; | |
923 | } | |
24236869 | 924 | |
64f5a135 FB |
925 | if (is_graphic_console()) { |
926 | if (keycode & 0x80) | |
927 | kbd_put_keycode(0xe0); | |
928 | if (down) | |
929 | kbd_put_keycode(keycode & 0x7f); | |
930 | else | |
931 | kbd_put_keycode(keycode | 0x80); | |
932 | } else { | |
933 | /* QEMU console emulation */ | |
934 | if (down) { | |
935 | switch (keycode) { | |
936 | case 0x2a: /* Left Shift */ | |
937 | case 0x36: /* Right Shift */ | |
938 | case 0x1d: /* Left CTRL */ | |
939 | case 0x9d: /* Right CTRL */ | |
940 | case 0x38: /* Left ALT */ | |
941 | case 0xb8: /* Right ALT */ | |
942 | break; | |
943 | case 0xc8: | |
944 | kbd_put_keysym(QEMU_KEY_UP); | |
945 | break; | |
946 | case 0xd0: | |
947 | kbd_put_keysym(QEMU_KEY_DOWN); | |
948 | break; | |
949 | case 0xcb: | |
950 | kbd_put_keysym(QEMU_KEY_LEFT); | |
951 | break; | |
952 | case 0xcd: | |
953 | kbd_put_keysym(QEMU_KEY_RIGHT); | |
954 | break; | |
955 | case 0xd3: | |
956 | kbd_put_keysym(QEMU_KEY_DELETE); | |
957 | break; | |
958 | case 0xc7: | |
959 | kbd_put_keysym(QEMU_KEY_HOME); | |
960 | break; | |
961 | case 0xcf: | |
962 | kbd_put_keysym(QEMU_KEY_END); | |
963 | break; | |
964 | case 0xc9: | |
965 | kbd_put_keysym(QEMU_KEY_PAGEUP); | |
966 | break; | |
967 | case 0xd1: | |
968 | kbd_put_keysym(QEMU_KEY_PAGEDOWN); | |
969 | break; | |
970 | default: | |
971 | kbd_put_keysym(sym); | |
972 | break; | |
973 | } | |
974 | } | |
975 | } | |
24236869 FB |
976 | } |
977 | ||
bdbd7676 FB |
978 | static void key_event(VncState *vs, int down, uint32_t sym) |
979 | { | |
980 | if (sym >= 'A' && sym <= 'Z') | |
981 | sym = sym - 'A' + 'a'; | |
982 | do_key_event(vs, down, sym); | |
983 | } | |
984 | ||
24236869 FB |
985 | static void framebuffer_update_request(VncState *vs, int incremental, |
986 | int x_position, int y_position, | |
987 | int w, int h) | |
988 | { | |
cf2d385c TS |
989 | if (x_position > vs->ds->width) |
990 | x_position = vs->ds->width; | |
991 | if (y_position > vs->ds->height) | |
992 | y_position = vs->ds->height; | |
993 | if (x_position + w >= vs->ds->width) | |
994 | w = vs->ds->width - x_position; | |
995 | if (y_position + h >= vs->ds->height) | |
996 | h = vs->ds->height - y_position; | |
997 | ||
24236869 FB |
998 | int i; |
999 | vs->need_update = 1; | |
1000 | if (!incremental) { | |
1001 | char *old_row = vs->old_data + y_position * vs->ds->linesize; | |
1002 | ||
1003 | for (i = 0; i < h; i++) { | |
99589bdc FB |
1004 | vnc_set_bits(vs->dirty_row[y_position + i], |
1005 | (vs->ds->width / 16), VNC_DIRTY_WORDS); | |
24236869 FB |
1006 | memset(old_row, 42, vs->ds->width * vs->depth); |
1007 | old_row += vs->ds->linesize; | |
1008 | } | |
1009 | } | |
1010 | } | |
1011 | ||
1012 | static void set_encodings(VncState *vs, int32_t *encodings, size_t n_encodings) | |
1013 | { | |
1014 | int i; | |
1015 | ||
1016 | vs->has_hextile = 0; | |
1017 | vs->has_resize = 0; | |
564c337e FB |
1018 | vs->has_pointer_type_change = 0; |
1019 | vs->absolute = -1; | |
24236869 FB |
1020 | vs->ds->dpy_copy = NULL; |
1021 | ||
1022 | for (i = n_encodings - 1; i >= 0; i--) { | |
1023 | switch (encodings[i]) { | |
1024 | case 0: /* Raw */ | |
1025 | vs->has_hextile = 0; | |
1026 | break; | |
1027 | case 1: /* CopyRect */ | |
1028 | vs->ds->dpy_copy = vnc_copy; | |
1029 | break; | |
1030 | case 5: /* Hextile */ | |
1031 | vs->has_hextile = 1; | |
1032 | break; | |
1033 | case -223: /* DesktopResize */ | |
1034 | vs->has_resize = 1; | |
1035 | break; | |
564c337e FB |
1036 | case -257: |
1037 | vs->has_pointer_type_change = 1; | |
1038 | break; | |
24236869 FB |
1039 | default: |
1040 | break; | |
1041 | } | |
1042 | } | |
564c337e FB |
1043 | |
1044 | check_pointer_type_change(vs, kbd_mouse_is_absolute()); | |
24236869 FB |
1045 | } |
1046 | ||
3512779a FB |
1047 | static int compute_nbits(unsigned int val) |
1048 | { | |
1049 | int n; | |
1050 | n = 0; | |
1051 | while (val != 0) { | |
1052 | n++; | |
1053 | val >>= 1; | |
1054 | } | |
1055 | return n; | |
1056 | } | |
1057 | ||
24236869 FB |
1058 | static void set_pixel_format(VncState *vs, |
1059 | int bits_per_pixel, int depth, | |
1060 | int big_endian_flag, int true_color_flag, | |
1061 | int red_max, int green_max, int blue_max, | |
1062 | int red_shift, int green_shift, int blue_shift) | |
1063 | { | |
3512779a | 1064 | int host_big_endian_flag; |
24236869 | 1065 | |
3512779a FB |
1066 | #ifdef WORDS_BIGENDIAN |
1067 | host_big_endian_flag = 1; | |
1068 | #else | |
1069 | host_big_endian_flag = 0; | |
1070 | #endif | |
1071 | if (!true_color_flag) { | |
1072 | fail: | |
24236869 | 1073 | vnc_client_error(vs); |
3512779a FB |
1074 | return; |
1075 | } | |
1076 | if (bits_per_pixel == 32 && | |
1077 | host_big_endian_flag == big_endian_flag && | |
1078 | red_max == 0xff && green_max == 0xff && blue_max == 0xff && | |
1079 | red_shift == 16 && green_shift == 8 && blue_shift == 0) { | |
1080 | vs->depth = 4; | |
1081 | vs->write_pixels = vnc_write_pixels_copy; | |
1082 | vs->send_hextile_tile = send_hextile_tile_32; | |
1083 | } else | |
1084 | if (bits_per_pixel == 16 && | |
1085 | host_big_endian_flag == big_endian_flag && | |
1086 | red_max == 31 && green_max == 63 && blue_max == 31 && | |
1087 | red_shift == 11 && green_shift == 5 && blue_shift == 0) { | |
1088 | vs->depth = 2; | |
1089 | vs->write_pixels = vnc_write_pixels_copy; | |
1090 | vs->send_hextile_tile = send_hextile_tile_16; | |
1091 | } else | |
1092 | if (bits_per_pixel == 8 && | |
1093 | red_max == 7 && green_max == 7 && blue_max == 3 && | |
1094 | red_shift == 5 && green_shift == 2 && blue_shift == 0) { | |
1095 | vs->depth = 1; | |
1096 | vs->write_pixels = vnc_write_pixels_copy; | |
1097 | vs->send_hextile_tile = send_hextile_tile_8; | |
1098 | } else | |
1099 | { | |
1100 | /* generic and slower case */ | |
1101 | if (bits_per_pixel != 8 && | |
1102 | bits_per_pixel != 16 && | |
1103 | bits_per_pixel != 32) | |
1104 | goto fail; | |
1105 | vs->depth = 4; | |
1106 | vs->red_shift = red_shift; | |
1107 | vs->red_max = red_max; | |
1108 | vs->red_shift1 = 24 - compute_nbits(red_max); | |
1109 | vs->green_shift = green_shift; | |
1110 | vs->green_max = green_max; | |
1111 | vs->green_shift1 = 16 - compute_nbits(green_max); | |
1112 | vs->blue_shift = blue_shift; | |
1113 | vs->blue_max = blue_max; | |
1114 | vs->blue_shift1 = 8 - compute_nbits(blue_max); | |
1115 | vs->pix_bpp = bits_per_pixel / 8; | |
1116 | vs->pix_big_endian = big_endian_flag; | |
1117 | vs->write_pixels = vnc_write_pixels_generic; | |
1118 | vs->send_hextile_tile = send_hextile_tile_generic; | |
1119 | } | |
24236869 FB |
1120 | |
1121 | vnc_dpy_resize(vs->ds, vs->ds->width, vs->ds->height); | |
1122 | memset(vs->dirty_row, 0xFF, sizeof(vs->dirty_row)); | |
1123 | memset(vs->old_data, 42, vs->ds->linesize * vs->ds->height); | |
1124 | ||
1125 | vga_hw_invalidate(); | |
1126 | vga_hw_update(); | |
1127 | } | |
1128 | ||
1129 | static int protocol_client_msg(VncState *vs, char *data, size_t len) | |
1130 | { | |
1131 | int i; | |
1132 | uint16_t limit; | |
1133 | ||
1134 | switch (data[0]) { | |
1135 | case 0: | |
1136 | if (len == 1) | |
1137 | return 20; | |
1138 | ||
1139 | set_pixel_format(vs, read_u8(data, 4), read_u8(data, 5), | |
1140 | read_u8(data, 6), read_u8(data, 7), | |
1141 | read_u16(data, 8), read_u16(data, 10), | |
1142 | read_u16(data, 12), read_u8(data, 14), | |
1143 | read_u8(data, 15), read_u8(data, 16)); | |
1144 | break; | |
1145 | case 2: | |
1146 | if (len == 1) | |
1147 | return 4; | |
1148 | ||
1149 | if (len == 4) | |
1150 | return 4 + (read_u16(data, 2) * 4); | |
1151 | ||
1152 | limit = read_u16(data, 2); | |
1153 | for (i = 0; i < limit; i++) { | |
1154 | int32_t val = read_s32(data, 4 + (i * 4)); | |
1155 | memcpy(data + 4 + (i * 4), &val, sizeof(val)); | |
1156 | } | |
1157 | ||
1158 | set_encodings(vs, (int32_t *)(data + 4), limit); | |
1159 | break; | |
1160 | case 3: | |
1161 | if (len == 1) | |
1162 | return 10; | |
1163 | ||
1164 | framebuffer_update_request(vs, | |
1165 | read_u8(data, 1), read_u16(data, 2), read_u16(data, 4), | |
1166 | read_u16(data, 6), read_u16(data, 8)); | |
1167 | break; | |
1168 | case 4: | |
1169 | if (len == 1) | |
1170 | return 8; | |
1171 | ||
1172 | key_event(vs, read_u8(data, 1), read_u32(data, 4)); | |
1173 | break; | |
1174 | case 5: | |
1175 | if (len == 1) | |
1176 | return 6; | |
1177 | ||
1178 | pointer_event(vs, read_u8(data, 1), read_u16(data, 2), read_u16(data, 4)); | |
1179 | break; | |
1180 | case 6: | |
1181 | if (len == 1) | |
1182 | return 8; | |
1183 | ||
1184 | if (len == 8) | |
1185 | return 8 + read_u32(data, 4); | |
1186 | ||
1187 | client_cut_text(vs, read_u32(data, 4), data + 8); | |
1188 | break; | |
1189 | default: | |
1190 | printf("Msg: %d\n", data[0]); | |
1191 | vnc_client_error(vs); | |
1192 | break; | |
1193 | } | |
1194 | ||
1195 | vnc_read_when(vs, protocol_client_msg, 1); | |
1196 | return 0; | |
1197 | } | |
1198 | ||
1199 | static int protocol_client_init(VncState *vs, char *data, size_t len) | |
1200 | { | |
1201 | char pad[3] = { 0, 0, 0 }; | |
c35734b2 TS |
1202 | char buf[1024]; |
1203 | int size; | |
24236869 FB |
1204 | |
1205 | vs->width = vs->ds->width; | |
1206 | vs->height = vs->ds->height; | |
1207 | vnc_write_u16(vs, vs->ds->width); | |
1208 | vnc_write_u16(vs, vs->ds->height); | |
1209 | ||
1210 | vnc_write_u8(vs, vs->depth * 8); /* bits-per-pixel */ | |
1211 | vnc_write_u8(vs, vs->depth * 8); /* depth */ | |
3512779a FB |
1212 | #ifdef WORDS_BIGENDIAN |
1213 | vnc_write_u8(vs, 1); /* big-endian-flag */ | |
1214 | #else | |
24236869 | 1215 | vnc_write_u8(vs, 0); /* big-endian-flag */ |
3512779a | 1216 | #endif |
24236869 FB |
1217 | vnc_write_u8(vs, 1); /* true-color-flag */ |
1218 | if (vs->depth == 4) { | |
1219 | vnc_write_u16(vs, 0xFF); /* red-max */ | |
1220 | vnc_write_u16(vs, 0xFF); /* green-max */ | |
1221 | vnc_write_u16(vs, 0xFF); /* blue-max */ | |
1222 | vnc_write_u8(vs, 16); /* red-shift */ | |
1223 | vnc_write_u8(vs, 8); /* green-shift */ | |
1224 | vnc_write_u8(vs, 0); /* blue-shift */ | |
3512779a | 1225 | vs->send_hextile_tile = send_hextile_tile_32; |
24236869 FB |
1226 | } else if (vs->depth == 2) { |
1227 | vnc_write_u16(vs, 31); /* red-max */ | |
1228 | vnc_write_u16(vs, 63); /* green-max */ | |
1229 | vnc_write_u16(vs, 31); /* blue-max */ | |
1230 | vnc_write_u8(vs, 11); /* red-shift */ | |
1231 | vnc_write_u8(vs, 5); /* green-shift */ | |
1232 | vnc_write_u8(vs, 0); /* blue-shift */ | |
3512779a | 1233 | vs->send_hextile_tile = send_hextile_tile_16; |
24236869 | 1234 | } else if (vs->depth == 1) { |
3512779a FB |
1235 | /* XXX: change QEMU pixel 8 bit pixel format to match the VNC one ? */ |
1236 | vnc_write_u16(vs, 7); /* red-max */ | |
24236869 FB |
1237 | vnc_write_u16(vs, 7); /* green-max */ |
1238 | vnc_write_u16(vs, 3); /* blue-max */ | |
1239 | vnc_write_u8(vs, 5); /* red-shift */ | |
1240 | vnc_write_u8(vs, 2); /* green-shift */ | |
1241 | vnc_write_u8(vs, 0); /* blue-shift */ | |
3512779a | 1242 | vs->send_hextile_tile = send_hextile_tile_8; |
24236869 | 1243 | } |
3512779a | 1244 | vs->write_pixels = vnc_write_pixels_copy; |
24236869 FB |
1245 | |
1246 | vnc_write(vs, pad, 3); /* padding */ | |
1247 | ||
c35734b2 TS |
1248 | if (qemu_name) |
1249 | size = snprintf(buf, sizeof(buf), "QEMU (%s)", qemu_name); | |
1250 | else | |
1251 | size = snprintf(buf, sizeof(buf), "QEMU"); | |
1252 | ||
1253 | vnc_write_u32(vs, size); | |
1254 | vnc_write(vs, buf, size); | |
24236869 FB |
1255 | vnc_flush(vs); |
1256 | ||
1257 | vnc_read_when(vs, protocol_client_msg, 1); | |
1258 | ||
1259 | return 0; | |
1260 | } | |
1261 | ||
70848515 TS |
1262 | static void make_challenge(VncState *vs) |
1263 | { | |
1264 | int i; | |
1265 | ||
1266 | srand(time(NULL)+getpid()+getpid()*987654+rand()); | |
1267 | ||
1268 | for (i = 0 ; i < sizeof(vs->challenge) ; i++) | |
1269 | vs->challenge[i] = (int) (256.0*rand()/(RAND_MAX+1.0)); | |
1270 | } | |
1271 | ||
1272 | static int protocol_client_auth_vnc(VncState *vs, char *data, size_t len) | |
1273 | { | |
1274 | char response[VNC_AUTH_CHALLENGE_SIZE]; | |
1275 | int i, j, pwlen; | |
1276 | char key[8]; | |
1277 | ||
1278 | if (!vs->password || !vs->password[0]) { | |
1279 | VNC_DEBUG("No password configured on server"); | |
1280 | vnc_write_u32(vs, 1); /* Reject auth */ | |
1281 | if (vs->minor >= 8) { | |
1282 | static const char err[] = "Authentication failed"; | |
1283 | vnc_write_u32(vs, sizeof(err)); | |
1284 | vnc_write(vs, err, sizeof(err)); | |
1285 | } | |
1286 | vnc_flush(vs); | |
1287 | vnc_client_error(vs); | |
1288 | return 0; | |
1289 | } | |
1290 | ||
1291 | memcpy(response, vs->challenge, VNC_AUTH_CHALLENGE_SIZE); | |
1292 | ||
1293 | /* Calculate the expected challenge response */ | |
1294 | pwlen = strlen(vs->password); | |
1295 | for (i=0; i<sizeof(key); i++) | |
1296 | key[i] = i<pwlen ? vs->password[i] : 0; | |
1297 | deskey(key, EN0); | |
1298 | for (j = 0; j < VNC_AUTH_CHALLENGE_SIZE; j += 8) | |
1299 | des(response+j, response+j); | |
1300 | ||
1301 | /* Compare expected vs actual challenge response */ | |
1302 | if (memcmp(response, data, VNC_AUTH_CHALLENGE_SIZE) != 0) { | |
1303 | VNC_DEBUG("Client challenge reponse did not match\n"); | |
1304 | vnc_write_u32(vs, 1); /* Reject auth */ | |
1305 | if (vs->minor >= 8) { | |
1306 | static const char err[] = "Authentication failed"; | |
1307 | vnc_write_u32(vs, sizeof(err)); | |
1308 | vnc_write(vs, err, sizeof(err)); | |
1309 | } | |
1310 | vnc_flush(vs); | |
1311 | vnc_client_error(vs); | |
1312 | } else { | |
1313 | VNC_DEBUG("Accepting VNC challenge response\n"); | |
1314 | vnc_write_u32(vs, 0); /* Accept auth */ | |
1315 | vnc_flush(vs); | |
1316 | ||
1317 | vnc_read_when(vs, protocol_client_init, 1); | |
1318 | } | |
1319 | return 0; | |
1320 | } | |
1321 | ||
1322 | static int start_auth_vnc(VncState *vs) | |
1323 | { | |
1324 | make_challenge(vs); | |
1325 | /* Send client a 'random' challenge */ | |
1326 | vnc_write(vs, vs->challenge, sizeof(vs->challenge)); | |
1327 | vnc_flush(vs); | |
1328 | ||
1329 | vnc_read_when(vs, protocol_client_auth_vnc, sizeof(vs->challenge)); | |
1330 | return 0; | |
1331 | } | |
1332 | ||
8d5d2d4c TS |
1333 | |
1334 | #if CONFIG_VNC_TLS | |
1335 | #define DH_BITS 1024 | |
1336 | static gnutls_dh_params_t dh_params; | |
1337 | ||
1338 | static int vnc_tls_initialize(void) | |
1339 | { | |
1340 | static int tlsinitialized = 0; | |
1341 | ||
1342 | if (tlsinitialized) | |
1343 | return 1; | |
1344 | ||
1345 | if (gnutls_global_init () < 0) | |
1346 | return 0; | |
1347 | ||
1348 | /* XXX ought to re-generate diffie-hellmen params periodically */ | |
1349 | if (gnutls_dh_params_init (&dh_params) < 0) | |
1350 | return 0; | |
1351 | if (gnutls_dh_params_generate2 (dh_params, DH_BITS) < 0) | |
1352 | return 0; | |
1353 | ||
1354 | #if _VNC_DEBUG == 2 | |
1355 | gnutls_global_set_log_level(10); | |
1356 | gnutls_global_set_log_function(vnc_debug_gnutls_log); | |
1357 | #endif | |
1358 | ||
1359 | tlsinitialized = 1; | |
1360 | ||
1361 | return 1; | |
1362 | } | |
1363 | ||
1364 | static gnutls_anon_server_credentials vnc_tls_initialize_anon_cred(void) | |
1365 | { | |
1366 | gnutls_anon_server_credentials anon_cred; | |
1367 | int ret; | |
1368 | ||
1369 | if ((ret = gnutls_anon_allocate_server_credentials(&anon_cred)) < 0) { | |
1370 | VNC_DEBUG("Cannot allocate credentials %s\n", gnutls_strerror(ret)); | |
1371 | return NULL; | |
1372 | } | |
1373 | ||
1374 | gnutls_anon_set_server_dh_params(anon_cred, dh_params); | |
1375 | ||
1376 | return anon_cred; | |
1377 | } | |
1378 | ||
1379 | ||
1380 | static int start_auth_vencrypt_subauth(VncState *vs) | |
1381 | { | |
1382 | switch (vs->subauth) { | |
1383 | case VNC_AUTH_VENCRYPT_TLSNONE: | |
1384 | VNC_DEBUG("Accept TLS auth none\n"); | |
1385 | vnc_write_u32(vs, 0); /* Accept auth completion */ | |
1386 | vnc_read_when(vs, protocol_client_init, 1); | |
1387 | break; | |
1388 | ||
1389 | case VNC_AUTH_VENCRYPT_TLSVNC: | |
1390 | VNC_DEBUG("Start TLS auth VNC\n"); | |
1391 | return start_auth_vnc(vs); | |
1392 | ||
1393 | default: /* Should not be possible, but just in case */ | |
1394 | VNC_DEBUG("Reject auth %d\n", vs->auth); | |
1395 | vnc_write_u8(vs, 1); | |
1396 | if (vs->minor >= 8) { | |
1397 | static const char err[] = "Unsupported authentication type"; | |
1398 | vnc_write_u32(vs, sizeof(err)); | |
1399 | vnc_write(vs, err, sizeof(err)); | |
1400 | } | |
1401 | vnc_client_error(vs); | |
1402 | } | |
1403 | ||
1404 | return 0; | |
1405 | } | |
1406 | ||
1407 | static void vnc_handshake_io(void *opaque); | |
1408 | ||
1409 | static int vnc_continue_handshake(struct VncState *vs) { | |
1410 | int ret; | |
1411 | ||
1412 | if ((ret = gnutls_handshake(vs->tls_session)) < 0) { | |
1413 | if (!gnutls_error_is_fatal(ret)) { | |
1414 | VNC_DEBUG("Handshake interrupted (blocking)\n"); | |
1415 | if (!gnutls_record_get_direction(vs->tls_session)) | |
1416 | qemu_set_fd_handler(vs->csock, vnc_handshake_io, NULL, vs); | |
1417 | else | |
1418 | qemu_set_fd_handler(vs->csock, NULL, vnc_handshake_io, vs); | |
1419 | return 0; | |
1420 | } | |
1421 | VNC_DEBUG("Handshake failed %s\n", gnutls_strerror(ret)); | |
1422 | vnc_client_error(vs); | |
1423 | return -1; | |
1424 | } | |
1425 | ||
1426 | VNC_DEBUG("Handshake done, switching to TLS data mode\n"); | |
1427 | vs->wiremode = VNC_WIREMODE_TLS; | |
1428 | qemu_set_fd_handler2(vs->csock, NULL, vnc_client_read, vnc_client_write, vs); | |
1429 | ||
1430 | return start_auth_vencrypt_subauth(vs); | |
1431 | } | |
1432 | ||
1433 | static void vnc_handshake_io(void *opaque) { | |
1434 | struct VncState *vs = (struct VncState *)opaque; | |
1435 | ||
1436 | VNC_DEBUG("Handshake IO continue\n"); | |
1437 | vnc_continue_handshake(vs); | |
1438 | } | |
1439 | ||
1440 | static int vnc_start_tls(struct VncState *vs) { | |
1441 | static const int cert_type_priority[] = { GNUTLS_CRT_X509, 0 }; | |
1442 | static const int protocol_priority[]= { GNUTLS_TLS1_1, GNUTLS_TLS1_0, GNUTLS_SSL3, 0 }; | |
1443 | static const int kx_anon[] = {GNUTLS_KX_ANON_DH, 0}; | |
1444 | gnutls_anon_server_credentials anon_cred = NULL; | |
1445 | ||
1446 | VNC_DEBUG("Do TLS setup\n"); | |
1447 | if (vnc_tls_initialize() < 0) { | |
1448 | VNC_DEBUG("Failed to init TLS\n"); | |
1449 | vnc_client_error(vs); | |
1450 | return -1; | |
1451 | } | |
1452 | if (vs->tls_session == NULL) { | |
1453 | if (gnutls_init(&vs->tls_session, GNUTLS_SERVER) < 0) { | |
1454 | vnc_client_error(vs); | |
1455 | return -1; | |
1456 | } | |
1457 | ||
1458 | if (gnutls_set_default_priority(vs->tls_session) < 0) { | |
1459 | gnutls_deinit(vs->tls_session); | |
1460 | vs->tls_session = NULL; | |
1461 | vnc_client_error(vs); | |
1462 | return -1; | |
1463 | } | |
1464 | ||
1465 | if (gnutls_kx_set_priority(vs->tls_session, kx_anon) < 0) { | |
1466 | gnutls_deinit(vs->tls_session); | |
1467 | vs->tls_session = NULL; | |
1468 | vnc_client_error(vs); | |
1469 | return -1; | |
1470 | } | |
1471 | ||
1472 | if (gnutls_certificate_type_set_priority(vs->tls_session, cert_type_priority) < 0) { | |
1473 | gnutls_deinit(vs->tls_session); | |
1474 | vs->tls_session = NULL; | |
1475 | vnc_client_error(vs); | |
1476 | return -1; | |
1477 | } | |
1478 | ||
1479 | if (gnutls_protocol_set_priority(vs->tls_session, protocol_priority) < 0) { | |
1480 | gnutls_deinit(vs->tls_session); | |
1481 | vs->tls_session = NULL; | |
1482 | vnc_client_error(vs); | |
1483 | return -1; | |
1484 | } | |
1485 | ||
1486 | anon_cred = vnc_tls_initialize_anon_cred(); | |
1487 | if (!anon_cred) { | |
1488 | gnutls_deinit(vs->tls_session); | |
1489 | vs->tls_session = NULL; | |
1490 | vnc_client_error(vs); | |
1491 | return -1; | |
1492 | } | |
1493 | if (gnutls_credentials_set(vs->tls_session, GNUTLS_CRD_ANON, anon_cred) < 0) { | |
1494 | gnutls_deinit(vs->tls_session); | |
1495 | vs->tls_session = NULL; | |
1496 | gnutls_anon_free_server_credentials(anon_cred); | |
1497 | vnc_client_error(vs); | |
1498 | return -1; | |
1499 | } | |
1500 | ||
1501 | gnutls_transport_set_ptr(vs->tls_session, (gnutls_transport_ptr_t)vs); | |
1502 | gnutls_transport_set_push_function(vs->tls_session, vnc_tls_push); | |
1503 | gnutls_transport_set_pull_function(vs->tls_session, vnc_tls_pull); | |
1504 | } | |
1505 | ||
1506 | VNC_DEBUG("Start TLS handshake process\n"); | |
1507 | return vnc_continue_handshake(vs); | |
1508 | } | |
1509 | ||
1510 | static int protocol_client_vencrypt_auth(VncState *vs, char *data, size_t len) | |
1511 | { | |
1512 | int auth = read_u32(data, 0); | |
1513 | ||
1514 | if (auth != vs->subauth) { | |
1515 | VNC_DEBUG("Rejecting auth %d\n", auth); | |
1516 | vnc_write_u8(vs, 0); /* Reject auth */ | |
1517 | vnc_flush(vs); | |
1518 | vnc_client_error(vs); | |
1519 | } else { | |
1520 | VNC_DEBUG("Accepting auth %d, starting handshake\n", auth); | |
1521 | vnc_write_u8(vs, 1); /* Accept auth */ | |
1522 | vnc_flush(vs); | |
1523 | ||
1524 | if (vnc_start_tls(vs) < 0) { | |
1525 | VNC_DEBUG("Failed to complete TLS\n"); | |
1526 | return 0; | |
1527 | } | |
1528 | ||
1529 | if (vs->wiremode == VNC_WIREMODE_TLS) { | |
1530 | VNC_DEBUG("Starting VeNCrypt subauth\n"); | |
1531 | return start_auth_vencrypt_subauth(vs); | |
1532 | } else { | |
1533 | VNC_DEBUG("TLS handshake blocked\n"); | |
1534 | return 0; | |
1535 | } | |
1536 | } | |
1537 | return 0; | |
1538 | } | |
1539 | ||
1540 | static int protocol_client_vencrypt_init(VncState *vs, char *data, size_t len) | |
1541 | { | |
1542 | if (data[0] != 0 || | |
1543 | data[1] != 2) { | |
1544 | VNC_DEBUG("Unsupported VeNCrypt protocol %d.%d\n", (int)data[0], (int)data[1]); | |
1545 | vnc_write_u8(vs, 1); /* Reject version */ | |
1546 | vnc_flush(vs); | |
1547 | vnc_client_error(vs); | |
1548 | } else { | |
1549 | VNC_DEBUG("Sending allowed auth %d\n", vs->subauth); | |
1550 | vnc_write_u8(vs, 0); /* Accept version */ | |
1551 | vnc_write_u8(vs, 1); /* Number of sub-auths */ | |
1552 | vnc_write_u32(vs, vs->subauth); /* The supported auth */ | |
1553 | vnc_flush(vs); | |
1554 | vnc_read_when(vs, protocol_client_vencrypt_auth, 4); | |
1555 | } | |
1556 | return 0; | |
1557 | } | |
1558 | ||
1559 | static int start_auth_vencrypt(VncState *vs) | |
1560 | { | |
1561 | /* Send VeNCrypt version 0.2 */ | |
1562 | vnc_write_u8(vs, 0); | |
1563 | vnc_write_u8(vs, 2); | |
1564 | ||
1565 | vnc_read_when(vs, protocol_client_vencrypt_init, 2); | |
1566 | return 0; | |
1567 | } | |
1568 | #endif /* CONFIG_VNC_TLS */ | |
1569 | ||
70848515 TS |
1570 | static int protocol_client_auth(VncState *vs, char *data, size_t len) |
1571 | { | |
1572 | /* We only advertise 1 auth scheme at a time, so client | |
1573 | * must pick the one we sent. Verify this */ | |
1574 | if (data[0] != vs->auth) { /* Reject auth */ | |
1575 | VNC_DEBUG("Reject auth %d\n", (int)data[0]); | |
1576 | vnc_write_u32(vs, 1); | |
1577 | if (vs->minor >= 8) { | |
1578 | static const char err[] = "Authentication failed"; | |
1579 | vnc_write_u32(vs, sizeof(err)); | |
1580 | vnc_write(vs, err, sizeof(err)); | |
1581 | } | |
1582 | vnc_client_error(vs); | |
1583 | } else { /* Accept requested auth */ | |
1584 | VNC_DEBUG("Client requested auth %d\n", (int)data[0]); | |
1585 | switch (vs->auth) { | |
1586 | case VNC_AUTH_NONE: | |
1587 | VNC_DEBUG("Accept auth none\n"); | |
1588 | vnc_write_u32(vs, 0); /* Accept auth completion */ | |
1589 | vnc_read_when(vs, protocol_client_init, 1); | |
1590 | break; | |
1591 | ||
1592 | case VNC_AUTH_VNC: | |
1593 | VNC_DEBUG("Start VNC auth\n"); | |
1594 | return start_auth_vnc(vs); | |
1595 | ||
8d5d2d4c TS |
1596 | #if CONFIG_VNC_TLS |
1597 | case VNC_AUTH_VENCRYPT: | |
1598 | VNC_DEBUG("Accept VeNCrypt auth\n");; | |
1599 | return start_auth_vencrypt(vs); | |
1600 | #endif /* CONFIG_VNC_TLS */ | |
1601 | ||
70848515 TS |
1602 | default: /* Should not be possible, but just in case */ |
1603 | VNC_DEBUG("Reject auth %d\n", vs->auth); | |
1604 | vnc_write_u8(vs, 1); | |
1605 | if (vs->minor >= 8) { | |
1606 | static const char err[] = "Authentication failed"; | |
1607 | vnc_write_u32(vs, sizeof(err)); | |
1608 | vnc_write(vs, err, sizeof(err)); | |
1609 | } | |
1610 | vnc_client_error(vs); | |
1611 | } | |
1612 | } | |
1613 | return 0; | |
1614 | } | |
1615 | ||
24236869 FB |
1616 | static int protocol_version(VncState *vs, char *version, size_t len) |
1617 | { | |
1618 | char local[13]; | |
24236869 FB |
1619 | |
1620 | memcpy(local, version, 12); | |
1621 | local[12] = 0; | |
1622 | ||
70848515 TS |
1623 | if (sscanf(local, "RFB %03d.%03d\n", &vs->major, &vs->minor) != 2) { |
1624 | VNC_DEBUG("Malformed protocol version %s\n", local); | |
24236869 FB |
1625 | vnc_client_error(vs); |
1626 | return 0; | |
1627 | } | |
70848515 TS |
1628 | VNC_DEBUG("Client request protocol version %d.%d\n", vs->major, vs->minor); |
1629 | if (vs->major != 3 || | |
1630 | (vs->minor != 3 && | |
1631 | vs->minor != 5 && | |
1632 | vs->minor != 7 && | |
1633 | vs->minor != 8)) { | |
1634 | VNC_DEBUG("Unsupported client version\n"); | |
1635 | vnc_write_u32(vs, VNC_AUTH_INVALID); | |
1636 | vnc_flush(vs); | |
1637 | vnc_client_error(vs); | |
1638 | return 0; | |
1639 | } | |
1640 | /* Some broken client report v3.5 which spec requires to be treated | |
1641 | * as equivalent to v3.3 by servers | |
1642 | */ | |
1643 | if (vs->minor == 5) | |
1644 | vs->minor = 3; | |
1645 | ||
1646 | if (vs->minor == 3) { | |
1647 | if (vs->auth == VNC_AUTH_NONE) { | |
1648 | VNC_DEBUG("Tell client auth none\n"); | |
1649 | vnc_write_u32(vs, vs->auth); | |
1650 | vnc_flush(vs); | |
1651 | vnc_read_when(vs, protocol_client_init, 1); | |
1652 | } else if (vs->auth == VNC_AUTH_VNC) { | |
1653 | VNC_DEBUG("Tell client VNC auth\n"); | |
1654 | vnc_write_u32(vs, vs->auth); | |
1655 | vnc_flush(vs); | |
1656 | start_auth_vnc(vs); | |
1657 | } else { | |
1658 | VNC_DEBUG("Unsupported auth %d for protocol 3.3\n", vs->auth); | |
1659 | vnc_write_u32(vs, VNC_AUTH_INVALID); | |
1660 | vnc_flush(vs); | |
1661 | vnc_client_error(vs); | |
1662 | } | |
1663 | } else { | |
1664 | VNC_DEBUG("Telling client we support auth %d\n", vs->auth); | |
1665 | vnc_write_u8(vs, 1); /* num auth */ | |
1666 | vnc_write_u8(vs, vs->auth); | |
1667 | vnc_read_when(vs, protocol_client_auth, 1); | |
1668 | vnc_flush(vs); | |
1669 | } | |
24236869 FB |
1670 | |
1671 | return 0; | |
1672 | } | |
1673 | ||
1674 | static void vnc_listen_read(void *opaque) | |
1675 | { | |
1676 | VncState *vs = opaque; | |
1677 | struct sockaddr_in addr; | |
1678 | socklen_t addrlen = sizeof(addr); | |
1679 | ||
1680 | vs->csock = accept(vs->lsock, (struct sockaddr *)&addr, &addrlen); | |
1681 | if (vs->csock != -1) { | |
8d5d2d4c | 1682 | VNC_DEBUG("New client on socket %d\n", vs->csock); |
6ca957f0 | 1683 | socket_set_nonblock(vs->csock); |
24236869 | 1684 | qemu_set_fd_handler2(vs->csock, NULL, vnc_client_read, NULL, opaque); |
70848515 | 1685 | vnc_write(vs, "RFB 003.008\n", 12); |
24236869 FB |
1686 | vnc_flush(vs); |
1687 | vnc_read_when(vs, protocol_version, 12); | |
1688 | memset(vs->old_data, 0, vs->ds->linesize * vs->ds->height); | |
1689 | memset(vs->dirty_row, 0xFF, sizeof(vs->dirty_row)); | |
1690 | vs->has_resize = 0; | |
1691 | vs->has_hextile = 0; | |
1692 | vs->ds->dpy_copy = NULL; | |
1693 | } | |
1694 | } | |
1695 | ||
73fc9742 TS |
1696 | extern int parse_host_port(struct sockaddr_in *saddr, const char *str); |
1697 | ||
71cab5ca | 1698 | void vnc_display_init(DisplayState *ds) |
24236869 | 1699 | { |
24236869 FB |
1700 | VncState *vs; |
1701 | ||
1702 | vs = qemu_mallocz(sizeof(VncState)); | |
1703 | if (!vs) | |
1704 | exit(1); | |
1705 | ||
1706 | ds->opaque = vs; | |
a9ce8590 | 1707 | vnc_state = vs; |
71cab5ca | 1708 | vs->display = NULL; |
70848515 | 1709 | vs->password = NULL; |
24236869 FB |
1710 | |
1711 | vs->lsock = -1; | |
1712 | vs->csock = -1; | |
1713 | vs->depth = 4; | |
564c337e FB |
1714 | vs->last_x = -1; |
1715 | vs->last_y = -1; | |
24236869 FB |
1716 | |
1717 | vs->ds = ds; | |
1718 | ||
1719 | if (!keyboard_layout) | |
1720 | keyboard_layout = "en-us"; | |
1721 | ||
1722 | vs->kbd_layout = init_keyboard_layout(keyboard_layout); | |
1723 | if (!vs->kbd_layout) | |
1724 | exit(1); | |
1725 | ||
73fc9742 TS |
1726 | vs->ds->data = NULL; |
1727 | vs->ds->dpy_update = vnc_dpy_update; | |
1728 | vs->ds->dpy_resize = vnc_dpy_resize; | |
1729 | vs->ds->dpy_refresh = vnc_dpy_refresh; | |
1730 | ||
1731 | memset(vs->dirty_row, 0xFF, sizeof(vs->dirty_row)); | |
24236869 | 1732 | |
73fc9742 | 1733 | vnc_dpy_resize(vs->ds, 640, 400); |
71cab5ca TS |
1734 | } |
1735 | ||
1736 | void vnc_display_close(DisplayState *ds) | |
1737 | { | |
e25a5822 | 1738 | VncState *vs = ds ? (VncState *)ds->opaque : vnc_state; |
71cab5ca TS |
1739 | |
1740 | if (vs->display) { | |
1741 | qemu_free(vs->display); | |
1742 | vs->display = NULL; | |
1743 | } | |
1744 | if (vs->lsock != -1) { | |
1745 | qemu_set_fd_handler2(vs->lsock, NULL, NULL, NULL, NULL); | |
1746 | close(vs->lsock); | |
1747 | vs->lsock = -1; | |
1748 | } | |
1749 | if (vs->csock != -1) { | |
1750 | qemu_set_fd_handler2(vs->csock, NULL, NULL, NULL, NULL); | |
1751 | closesocket(vs->csock); | |
1752 | vs->csock = -1; | |
1753 | buffer_reset(&vs->input); | |
1754 | buffer_reset(&vs->output); | |
1755 | vs->need_update = 0; | |
8d5d2d4c TS |
1756 | #if CONFIG_VNC_TLS |
1757 | if (vs->tls_session) { | |
1758 | gnutls_deinit(vs->tls_session); | |
1759 | vs->tls_session = NULL; | |
1760 | } | |
1761 | vs->wiremode = VNC_WIREMODE_CLEAR; | |
1762 | #endif /* CONFIG_VNC_TLS */ | |
71cab5ca | 1763 | } |
70848515 | 1764 | vs->auth = VNC_AUTH_INVALID; |
8d5d2d4c TS |
1765 | #if CONFIG_VNC_TLS |
1766 | vs->subauth = VNC_AUTH_INVALID; | |
1767 | #endif | |
70848515 TS |
1768 | } |
1769 | ||
1770 | int vnc_display_password(DisplayState *ds, const char *password) | |
1771 | { | |
1772 | VncState *vs = ds ? (VncState *)ds->opaque : vnc_state; | |
1773 | ||
1774 | if (vs->password) { | |
1775 | qemu_free(vs->password); | |
1776 | vs->password = NULL; | |
1777 | } | |
1778 | if (password && password[0]) { | |
1779 | if (!(vs->password = qemu_strdup(password))) | |
1780 | return -1; | |
1781 | } | |
1782 | ||
1783 | return 0; | |
71cab5ca TS |
1784 | } |
1785 | ||
70848515 | 1786 | int vnc_display_open(DisplayState *ds, const char *display) |
71cab5ca TS |
1787 | { |
1788 | struct sockaddr *addr; | |
1789 | struct sockaddr_in iaddr; | |
1790 | #ifndef _WIN32 | |
1791 | struct sockaddr_un uaddr; | |
1792 | #endif | |
1793 | int reuse_addr, ret; | |
1794 | socklen_t addrlen; | |
1795 | const char *p; | |
e25a5822 | 1796 | VncState *vs = ds ? (VncState *)ds->opaque : vnc_state; |
70848515 TS |
1797 | const char *options; |
1798 | int password = 0; | |
8d5d2d4c TS |
1799 | #if CONFIG_VNC_TLS |
1800 | int tls = 0; | |
1801 | #endif | |
71cab5ca TS |
1802 | |
1803 | vnc_display_close(ds); | |
70848515 | 1804 | if (strcmp(display, "none") == 0) |
71cab5ca | 1805 | return 0; |
24236869 | 1806 | |
70848515 | 1807 | if (!(vs->display = strdup(display))) |
71cab5ca | 1808 | return -1; |
70848515 TS |
1809 | |
1810 | options = display; | |
1811 | while ((options = strchr(options, ','))) { | |
1812 | options++; | |
1813 | if (strncmp(options, "password", 8) == 0) | |
1814 | password = 1; /* Require password auth */ | |
8d5d2d4c TS |
1815 | #if CONFIG_VNC_TLS |
1816 | else if (strncmp(options, "tls", 3) == 0) | |
1817 | tls = 1; /* Require TLS */ | |
1818 | #endif | |
70848515 TS |
1819 | } |
1820 | ||
1821 | if (password) { | |
8d5d2d4c TS |
1822 | #if CONFIG_VNC_TLS |
1823 | if (tls) { | |
1824 | VNC_DEBUG("Initializing VNC server with TLS password auth\n"); | |
1825 | vs->auth = VNC_AUTH_VENCRYPT; | |
1826 | vs->subauth = VNC_AUTH_VENCRYPT_TLSVNC; | |
1827 | } else { | |
1828 | #endif | |
1829 | VNC_DEBUG("Initializing VNC server with password auth\n"); | |
1830 | vs->auth = VNC_AUTH_VNC; | |
1831 | #if CONFIG_VNC_TLS | |
1832 | vs->subauth = VNC_AUTH_INVALID; | |
1833 | } | |
1834 | #endif | |
70848515 | 1835 | } else { |
8d5d2d4c TS |
1836 | #if CONFIG_VNC_TLS |
1837 | if (tls) { | |
1838 | VNC_DEBUG("Initializing VNC server with TLS no auth\n"); | |
1839 | vs->auth = VNC_AUTH_VENCRYPT; | |
1840 | vs->subauth = VNC_AUTH_VENCRYPT_TLSNONE; | |
1841 | } else { | |
1842 | #endif | |
1843 | VNC_DEBUG("Initializing VNC server with no auth\n"); | |
1844 | vs->auth = VNC_AUTH_NONE; | |
1845 | #if CONFIG_VNC_TLS | |
1846 | vs->subauth = VNC_AUTH_INVALID; | |
1847 | } | |
1848 | #endif | |
70848515 | 1849 | } |
73fc9742 | 1850 | #ifndef _WIN32 |
70848515 | 1851 | if (strstart(display, "unix:", &p)) { |
73fc9742 TS |
1852 | addr = (struct sockaddr *)&uaddr; |
1853 | addrlen = sizeof(uaddr); | |
1854 | ||
1855 | vs->lsock = socket(PF_UNIX, SOCK_STREAM, 0); | |
1856 | if (vs->lsock == -1) { | |
1857 | fprintf(stderr, "Could not create socket\n"); | |
71cab5ca TS |
1858 | free(vs->display); |
1859 | vs->display = NULL; | |
1860 | return -1; | |
73fc9742 TS |
1861 | } |
1862 | ||
1863 | uaddr.sun_family = AF_UNIX; | |
1864 | memset(uaddr.sun_path, 0, 108); | |
1865 | snprintf(uaddr.sun_path, 108, "%s", p); | |
1866 | ||
1867 | unlink(uaddr.sun_path); | |
1868 | } else | |
1869 | #endif | |
1870 | { | |
1871 | addr = (struct sockaddr *)&iaddr; | |
1872 | addrlen = sizeof(iaddr); | |
1873 | ||
70848515 | 1874 | if (parse_host_port(&iaddr, display) < 0) { |
73fc9742 | 1875 | fprintf(stderr, "Could not parse VNC address\n"); |
71cab5ca TS |
1876 | free(vs->display); |
1877 | vs->display = NULL; | |
1878 | return -1; | |
73fc9742 | 1879 | } |
71cab5ca | 1880 | |
73fc9742 TS |
1881 | iaddr.sin_port = htons(ntohs(iaddr.sin_port) + 5900); |
1882 | ||
71cab5ca TS |
1883 | vs->lsock = socket(PF_INET, SOCK_STREAM, 0); |
1884 | if (vs->lsock == -1) { | |
1885 | fprintf(stderr, "Could not create socket\n"); | |
1886 | free(vs->display); | |
1887 | vs->display = NULL; | |
1888 | return -1; | |
1889 | } | |
1890 | ||
73fc9742 TS |
1891 | reuse_addr = 1; |
1892 | ret = setsockopt(vs->lsock, SOL_SOCKET, SO_REUSEADDR, | |
1893 | (const char *)&reuse_addr, sizeof(reuse_addr)); | |
1894 | if (ret == -1) { | |
1895 | fprintf(stderr, "setsockopt() failed\n"); | |
71cab5ca TS |
1896 | close(vs->lsock); |
1897 | vs->lsock = -1; | |
1898 | free(vs->display); | |
1899 | vs->display = NULL; | |
1900 | return -1; | |
73fc9742 | 1901 | } |
24236869 FB |
1902 | } |
1903 | ||
73fc9742 | 1904 | if (bind(vs->lsock, addr, addrlen) == -1) { |
24236869 | 1905 | fprintf(stderr, "bind() failed\n"); |
71cab5ca TS |
1906 | close(vs->lsock); |
1907 | vs->lsock = -1; | |
1908 | free(vs->display); | |
1909 | vs->display = NULL; | |
1910 | return -1; | |
24236869 FB |
1911 | } |
1912 | ||
1913 | if (listen(vs->lsock, 1) == -1) { | |
1914 | fprintf(stderr, "listen() failed\n"); | |
71cab5ca TS |
1915 | close(vs->lsock); |
1916 | vs->lsock = -1; | |
1917 | free(vs->display); | |
1918 | vs->display = NULL; | |
1919 | return -1; | |
24236869 FB |
1920 | } |
1921 | ||
71cab5ca | 1922 | return qemu_set_fd_handler2(vs->lsock, vnc_listen_poll, vnc_listen_read, NULL, vs); |
24236869 | 1923 | } |