wok-next annotate busybox/stuff/busybox-1.25-fbvnc.u @ rev 19340

Up busybox (1.25.0)
author Pascal Bellard <pascal.bellard@slitaz.org>
date Tue Jul 19 18:17:18 2016 +0200 (2016-07-19)
parents
children
rev   line source
pascal@19340 1 text data bss dec hex filename
pascal@19340 2 3179 0 0 3179 c6b util-linux/fbvnc.o
pascal@19340 3 --- /dev/null
pascal@19340 4 +++ busybox/util-linux/fbvnc.c
pascal@19340 5 @@ -0,0 +1,552 @@
pascal@19340 6 +/* vi: set sw=4 ts=4: */
pascal@19340 7 +/*
pascal@19340 8 + * A small linux framebuffer VNC viewer
pascal@19340 9 + *
pascal@19340 10 + * pascal.bellard@ads-lu.com
pascal@19340 11 + *
pascal@19340 12 + * Based on Ali Gholami Rudi's fbvnc.c
pascal@19340 13 + * http://repo.or.cz/w/fbvnc.git
pascal@19340 14 + *
pascal@19340 15 + * Licensed under GPLv2 or later, see file LICENSE in this source tree.
pascal@19340 16 + */
pascal@19340 17 +
pascal@19340 18 +//applet:IF_FBVNC(APPLET(fbvnc, BB_DIR_BIN, BB_SUID_DROP))
pascal@19340 19 +
pascal@19340 20 +//kbuild:lib-$(CONFIG_FBVNC) += fbvnc.o
pascal@19340 21 +
pascal@19340 22 +//config:config FBVNC
pascal@19340 23 +//config: bool "fbvnc"
pascal@19340 24 +//config: default n
pascal@19340 25 +//config: depends on PLATFORM_LINUX
pascal@19340 26 +//config: help
pascal@19340 27 +//config: A linux framebuffer VNC viewer.
pascal@19340 28 +
pascal@19340 29 +//usage:#define fbvnc_trivial_usage
pascal@19340 30 +//usage: "[VNC_SERVER] [PORT]"
pascal@19340 31 +//usage:#define fbvnc_full_usage "\n\n"
pascal@19340 32 +//usage: "A linux framebuffer VNC viewer."
pascal@19340 33 +//usage: "\nTo exit, press any mouse button and press ESC."
pascal@19340 34 +
pascal@19340 35 +#include "libbb.h"
pascal@19340 36 +#include "vnc.h"
pascal@19340 37 +#include "common_bufsiz.h"
pascal@19340 38 +
pascal@19340 39 +/* Stuff stolen from the kernel's fb.h */
pascal@19340 40 +#define FB_ACTIVATE_ALL 64
pascal@19340 41 +enum {
pascal@19340 42 + FBIOGET_VSCREENINFO = 0x4600,
pascal@19340 43 + FBIOPUT_VSCREENINFO = 0x4601,
pascal@19340 44 + FBIOGET_FSCREENINFO = 0x4602,
pascal@19340 45 + FBIOGETCMAP = 0x4604,
pascal@19340 46 + FBIOPUTCMAP = 0x4605
pascal@19340 47 +};
pascal@19340 48 +
pascal@19340 49 +struct fb_bitfield {
pascal@19340 50 + uint32_t offset; /* beginning of bitfield */
pascal@19340 51 + uint32_t length; /* length of bitfield */
pascal@19340 52 + uint32_t msb_right; /* !=0: Most significant bit is right */
pascal@19340 53 +};
pascal@19340 54 +struct fb_var_screeninfo {
pascal@19340 55 + uint32_t xres; /* visible resolution */
pascal@19340 56 + uint32_t yres;
pascal@19340 57 + uint32_t xres_virtual; /* virtual resolution */
pascal@19340 58 + uint32_t yres_virtual;
pascal@19340 59 + uint32_t xoffset; /* offset from virtual to visible */
pascal@19340 60 + uint32_t yoffset; /* resolution */
pascal@19340 61 +
pascal@19340 62 + uint32_t bits_per_pixel;
pascal@19340 63 + uint32_t grayscale; /* !=0 Graylevels instead of colors */
pascal@19340 64 +
pascal@19340 65 + struct fb_bitfield red; /* bitfield in fb mem if true color, */
pascal@19340 66 + struct fb_bitfield green; /* else only length is significant */
pascal@19340 67 + struct fb_bitfield blue;
pascal@19340 68 + struct fb_bitfield transp; /* transparency */
pascal@19340 69 +
pascal@19340 70 + uint32_t nonstd; /* !=0 Non standard pixel format */
pascal@19340 71 +
pascal@19340 72 + uint32_t activate; /* see FB_ACTIVATE_x */
pascal@19340 73 +
pascal@19340 74 + uint32_t height; /* height of picture in mm */
pascal@19340 75 + uint32_t width; /* width of picture in mm */
pascal@19340 76 +
pascal@19340 77 + uint32_t accel_flags; /* acceleration flags (hints) */
pascal@19340 78 +
pascal@19340 79 + /* Timing: All values in pixclocks, except pixclock (of course) */
pascal@19340 80 + uint32_t pixclock; /* pixel clock in ps (pico seconds) */
pascal@19340 81 + uint32_t left_margin; /* time from sync to picture */
pascal@19340 82 + uint32_t right_margin; /* time from picture to sync */
pascal@19340 83 + uint32_t upper_margin; /* time from sync to picture */
pascal@19340 84 + uint32_t lower_margin;
pascal@19340 85 + uint32_t hsync_len; /* length of horizontal sync */
pascal@19340 86 + uint32_t vsync_len; /* length of vertical sync */
pascal@19340 87 + uint32_t sync; /* see FB_SYNC_x */
pascal@19340 88 + uint32_t vmode; /* see FB_VMODE_x */
pascal@19340 89 + uint32_t reserved[6]; /* Reserved for future compatibility */
pascal@19340 90 +};
pascal@19340 91 +
pascal@19340 92 +#define DEFAULTFBDEV FB_0
pascal@19340 93 +
pascal@19340 94 +struct fb_fix_screeninfo {
pascal@19340 95 + char id[16]; /* identification string eg "TT Builtin" */
pascal@19340 96 + unsigned long smem_start; /* Start of frame buffer mem */
pascal@19340 97 + /* (physical address) */
pascal@19340 98 + uint32_t smem_len; /* Length of frame buffer mem */
pascal@19340 99 + uint32_t type; /* see FB_TYPE_* */
pascal@19340 100 + uint32_t type_aux; /* Interleave for interleaved Planes */
pascal@19340 101 + uint32_t visual; /* see FB_VISUAL_* */
pascal@19340 102 + uint16_t xpanstep; /* zero if no hardware panning */
pascal@19340 103 + uint16_t ypanstep; /* zero if no hardware panning */
pascal@19340 104 + uint16_t ywrapstep; /* zero if no hardware ywrap */
pascal@19340 105 + uint32_t line_length; /* length of a line in bytes */
pascal@19340 106 + unsigned long mmio_start; /* Start of Memory Mapped I/O */
pascal@19340 107 + /* (physical address) */
pascal@19340 108 + uint32_t mmio_len; /* Length of Memory Mapped I/O */
pascal@19340 109 + uint32_t accel; /* Indicate to driver which */
pascal@19340 110 + /* specific chip/card we have */
pascal@19340 111 + uint16_t reserved[3]; /* Reserved for future compatibility */
pascal@19340 112 +};
pascal@19340 113 +
pascal@19340 114 +struct fb_cmap {
pascal@19340 115 + uint32_t start; /* First entry */
pascal@19340 116 + uint32_t len; /* Number of entries */
pascal@19340 117 + uint16_t *red; /* Red values */
pascal@19340 118 + uint16_t *green;
pascal@19340 119 + uint16_t *blue;
pascal@19340 120 + uint16_t *transp; /* transparency, can be NULL */
pascal@19340 121 +};
pascal@19340 122 +
pascal@19340 123 +#define FB_VISUAL_TRUECOLOR 2 /* True color */
pascal@19340 124 +
pascal@19340 125 +#define COLORLEVELS (1 << 8)
pascal@19340 126 +
pascal@19340 127 +struct scroll_data {
pascal@19340 128 + int size;
pascal@19340 129 + int srv_size;
pascal@19340 130 + int offset;
pascal@19340 131 + int pos;
pascal@19340 132 +};
pascal@19340 133 +
pascal@19340 134 +struct globals {
pascal@19340 135 + struct termios term_orig;
pascal@19340 136 + struct pollfd ufds[3];
pascal@19340 137 +#define kbd_fd ufds[0].fd
pascal@19340 138 +#define vnc_fd ufds[1].fd
pascal@19340 139 +#define rat_fd ufds[2].fd
pascal@19340 140 + struct scroll_data scroll[2];
pascal@19340 141 +#define cols scroll[0].size
pascal@19340 142 +#define srv_cols scroll[0].srv_size
pascal@19340 143 +#define oc scroll[0].offset
pascal@19340 144 +#define mc scroll[0].pos
pascal@19340 145 +#define rows scroll[1].size
pascal@19340 146 +#define srv_rows scroll[1].srv_size
pascal@19340 147 +#define or scroll[1].offset
pascal@19340 148 +#define mr scroll[1].pos
pascal@19340 149 + char rat_buttons;
pascal@19340 150 + int fb_fd;
pascal@19340 151 + void *fb_ptr;
pascal@19340 152 + int bpp;
pascal@19340 153 + int nr, ng, nb;
pascal@19340 154 + struct fb_var_screeninfo vinfo;
pascal@19340 155 + struct fb_fix_screeninfo finfo;
pascal@19340 156 + unsigned short red[COLORLEVELS], green[COLORLEVELS], blue[COLORLEVELS];
pascal@19340 157 +};
pascal@19340 158 +
pascal@19340 159 +#define G (*ptr_to_globals)
pascal@19340 160 +#define INIT_G() do { \
pascal@19340 161 + SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \
pascal@19340 162 +} while (0)
pascal@19340 163 +
pascal@19340 164 +static int fb_len(void)
pascal@19340 165 +{
pascal@19340 166 + return G.finfo.line_length * G.vinfo.yres_virtual;
pascal@19340 167 +}
pascal@19340 168 +
pascal@19340 169 +static void fb_ioctl_cmap(int fct, struct fb_cmap *cmap)
pascal@19340 170 +{
pascal@19340 171 + if (G.finfo.visual == FB_VISUAL_TRUECOLOR)
pascal@19340 172 + return;
pascal@19340 173 + cmap->start = 0;
pascal@19340 174 + cmap->len = MAX(G.nr, MAX(G.ng, G.nb));
pascal@19340 175 + cmap->transp = NULL;
pascal@19340 176 + xioctl(G.fb_fd, fct, cmap);
pascal@19340 177 +}
pascal@19340 178 +
pascal@19340 179 +static void fb_cmap_save(int save)
pascal@19340 180 +{
pascal@19340 181 + struct fb_cmap cmap;
pascal@19340 182 +
pascal@19340 183 + cmap.red = G.red;
pascal@19340 184 + cmap.green = G.green;
pascal@19340 185 + cmap.blue = G.blue;
pascal@19340 186 + fb_ioctl_cmap(save ? FBIOGETCMAP : FBIOPUTCMAP, &cmap);
pascal@19340 187 +}
pascal@19340 188 +
pascal@19340 189 +static void fb_build_cmap(unsigned short *color, int n)
pascal@19340 190 +{
pascal@19340 191 + int i, inc = 65535 / (n - 1);
pascal@19340 192 +
pascal@19340 193 + for (i = 0; n--; i += inc)
pascal@19340 194 + *color++ = i;
pascal@19340 195 +}
pascal@19340 196 +
pascal@19340 197 +static void fb_cmap(void)
pascal@19340 198 +{
pascal@19340 199 + unsigned short red[COLORLEVELS], green[COLORLEVELS], blue[COLORLEVELS];
pascal@19340 200 + struct fb_cmap cmap;
pascal@19340 201 +
pascal@19340 202 + fb_build_cmap(cmap.red = red, G.nr);
pascal@19340 203 + fb_build_cmap(cmap.green = green, G.ng);
pascal@19340 204 + fb_build_cmap(cmap.blue = blue, G.nb);
pascal@19340 205 + fb_ioctl_cmap(FBIOPUTCMAP, &cmap);
pascal@19340 206 +}
pascal@19340 207 +
pascal@19340 208 +static void fb_init(void)
pascal@19340 209 +{
pascal@19340 210 + G.fb_fd = xopen(DEFAULTFBDEV, O_RDWR);
pascal@19340 211 + xioctl(G.fb_fd, FBIOGET_VSCREENINFO, &G.vinfo);
pascal@19340 212 + xioctl(G.fb_fd, FBIOGET_FSCREENINFO, &G.finfo);
pascal@19340 213 + close_on_exec_on(G.fb_fd);
pascal@19340 214 + G.fb_ptr = mmap(NULL, fb_len(), PROT_READ | PROT_WRITE, MAP_SHARED, G.fb_fd, 0);
pascal@19340 215 + if (G.fb_ptr == MAP_FAILED)
pascal@19340 216 + bb_perror_msg_and_die("mmap");
pascal@19340 217 + G.bpp = (G.vinfo.bits_per_pixel + 7) >> 3;
pascal@19340 218 + G.nr = 1 << G.vinfo.red.length;
pascal@19340 219 + G.nb = 1 << G.vinfo.blue.length;
pascal@19340 220 + G.ng = 1 << G.vinfo.green.length;
pascal@19340 221 + fb_cmap_save(1);
pascal@19340 222 + fb_cmap();
pascal@19340 223 +}
pascal@19340 224 +
pascal@19340 225 +static void fb_free(void)
pascal@19340 226 +{
pascal@19340 227 + fb_cmap_save(0);
pascal@19340 228 + munmap(G.fb_ptr, fb_len());
pascal@19340 229 + close(G.fb_fd);
pascal@19340 230 +}
pascal@19340 231 +
pascal@19340 232 +#define fb_rows vinfo.yres
pascal@19340 233 +#define fb_cols vinfo.xres
pascal@19340 234 +
pascal@19340 235 +static void fb_set(int r, int c, void *mem, int len)
pascal@19340 236 +{
pascal@19340 237 + memcpy(G.fb_ptr + (r + G.vinfo.yoffset) * G.finfo.line_length +
pascal@19340 238 + (c + G.vinfo.xoffset) * G.bpp, mem, len * G.bpp);
pascal@19340 239 +}
pascal@19340 240 +
pascal@19340 241 +#define line_buffer bb_common_bufsiz1
pascal@19340 242 +#define MAXPIX (COMMON_BUFSIZE/sizeof(uint32_t))
pascal@19340 243 +
pascal@19340 244 +static void skip(int len)
pascal@19340 245 +{
pascal@19340 246 + int n;
pascal@19340 247 + while (len > 0 && (n = read(G.vnc_fd, line_buffer,
pascal@19340 248 + MIN(len, COMMON_BUFSIZE))) > 0)
pascal@19340 249 + len -= n;
pascal@19340 250 +}
pascal@19340 251 +
pascal@19340 252 +static void vnc_init(void)
pascal@19340 253 +{
pascal@19340 254 + struct vnc_client_init clientinit;
pascal@19340 255 + struct vnc_server_init serverinit;
pascal@19340 256 + struct vnc_client_pixelfmt pixfmt_cmd;
pascal@19340 257 + int connstat = VNC_CONN_FAILED;
pascal@19340 258 +
pascal@19340 259 + write(G.vnc_fd, "RFB 003.003\n", 12);
pascal@19340 260 + skip(12);
pascal@19340 261 +
pascal@19340 262 + xread(G.vnc_fd, &connstat, sizeof(connstat));
pascal@19340 263 +
pascal@19340 264 + if (ntohl(connstat) != VNC_CONN_NOAUTH)
pascal@19340 265 + bb_perror_msg_and_die("vnc auth");
pascal@19340 266 +
pascal@19340 267 + clientinit.shared = 1;
pascal@19340 268 + write(G.vnc_fd, &clientinit, sizeof(clientinit));
pascal@19340 269 + read(G.vnc_fd, &serverinit, sizeof(serverinit));
pascal@19340 270 +
pascal@19340 271 + fb_init();
pascal@19340 272 + G.srv_cols = ntohs(serverinit.w);
pascal@19340 273 + G.srv_rows = ntohs(serverinit.h);
pascal@19340 274 + G.cols = MIN(G.srv_cols, G.fb_cols);
pascal@19340 275 + G.rows = MIN(G.srv_rows, G.fb_rows);
pascal@19340 276 + G.mr = G.rows / 2;
pascal@19340 277 + G.mc = G.cols / 2;
pascal@19340 278 +
pascal@19340 279 + skip(ntohl(serverinit.len));
pascal@19340 280 + pixfmt_cmd.type = VNC_CLIENT_PIXFMT;
pascal@19340 281 + pixfmt_cmd.format.bigendian = 0;
pascal@19340 282 + pixfmt_cmd.format.truecolor = 1;
pascal@19340 283 + pixfmt_cmd.format.bpp =
pascal@19340 284 + pixfmt_cmd.format.depth = G.bpp << 3;
pascal@19340 285 + pixfmt_cmd.format.rmax = htons(G.nr - 1);
pascal@19340 286 + pixfmt_cmd.format.gmax = htons(G.ng - 1);
pascal@19340 287 + pixfmt_cmd.format.bmax = htons(G.nb - 1);
pascal@19340 288 + pixfmt_cmd.format.rshl = G.vinfo.red.offset;
pascal@19340 289 + pixfmt_cmd.format.gshl = G.vinfo.green.offset;
pascal@19340 290 + pixfmt_cmd.format.bshl = G.vinfo.blue.offset;
pascal@19340 291 + write(G.vnc_fd, &pixfmt_cmd, sizeof(pixfmt_cmd));
pascal@19340 292 +}
pascal@19340 293 +
pascal@19340 294 +static void vnc_refresh(int inc)
pascal@19340 295 +{
pascal@19340 296 + struct vnc_client_fbup fbup_req;
pascal@19340 297 + fbup_req.type = VNC_CLIENT_FBUP;
pascal@19340 298 + fbup_req.inc = inc;
pascal@19340 299 + fbup_req.x = htons(G.oc);
pascal@19340 300 + fbup_req.y = htons(G.or);
pascal@19340 301 + fbup_req.w = htons(G.oc + G.cols);
pascal@19340 302 + fbup_req.h = htons(G.or + G.rows);
pascal@19340 303 + write(G.vnc_fd, &fbup_req, sizeof(fbup_req));
pascal@19340 304 +}
pascal@19340 305 +
pascal@19340 306 +static void cleanup(void)
pascal@19340 307 +{
pascal@19340 308 +#define RESETSTR "\x1b[?25h\x1b[2J\x1b[H"
pascal@19340 309 + fb_free();
pascal@19340 310 + tcsetattr_stdin_TCSANOW(&G.term_orig);
pascal@19340 311 + write(STDOUT_FILENO, RESETSTR, sizeof(RESETSTR));
pascal@19340 312 + if (ENABLE_FEATURE_CLEAN_UP) {
pascal@19340 313 + close(G.vnc_fd);
pascal@19340 314 + close(G.rat_fd);
pascal@19340 315 + }
pascal@19340 316 +}
pascal@19340 317 +
pascal@19340 318 +static void killed(int code) NORETURN;
pascal@19340 319 +static void killed(int code)
pascal@19340 320 +{
pascal@19340 321 + cleanup();
pascal@19340 322 + if (code > EXIT_FAILURE)
pascal@19340 323 + kill_myself_with_sig(code);
pascal@19340 324 + exit(code);
pascal@19340 325 +}
pascal@19340 326 +
pascal@19340 327 +static void vnc_event(void)
pascal@19340 328 +{
pascal@19340 329 + struct vnc_rect uprect;
pascal@19340 330 + union {
pascal@19340 331 + struct vnc_server_fbup fbup;
pascal@19340 332 + struct vnc_server_cuttext cuttext;
pascal@19340 333 + struct vnc_server_colormap colormap;
pascal@19340 334 + } msg;
pascal@19340 335 + int n;
pascal@19340 336 +
pascal@19340 337 + switch (xread_char(G.vnc_fd)) {
pascal@19340 338 + case VNC_SERVER_FBUP:
pascal@19340 339 + xread(G.vnc_fd, &msg.fbup.pad, sizeof(msg.fbup) - 1);
pascal@19340 340 + n = ntohs(msg.fbup.n);
pascal@19340 341 + while (n--) {
pascal@19340 342 + int x, y, w, h, l, i;
pascal@19340 343 + xread(G.vnc_fd, &uprect, sizeof(uprect));
pascal@19340 344 + if (uprect.enc != 0)
pascal@19340 345 + killed(1);
pascal@19340 346 + i = 0;
pascal@19340 347 + x = ntohs(uprect.x) - G.oc;
pascal@19340 348 + y = ntohs(uprect.y) - G.or;
pascal@19340 349 + w = ntohs(uprect.w);
pascal@19340 350 + h = ntohs(uprect.h);
pascal@19340 351 + l = MIN(w, G.cols - x);
pascal@19340 352 + if (x < 0) {
pascal@19340 353 + l = MIN(w + x, G.cols);
pascal@19340 354 + i = -x;
pascal@19340 355 + x = 0;
pascal@19340 356 + }
pascal@19340 357 + for (; h--; y++) {
pascal@19340 358 + int a, b, c = i;
pascal@19340 359 + for (a = b = 0; w > b; b += a, c = 0) {
pascal@19340 360 + int len;
pascal@19340 361 + a = MIN(w - b, MAXPIX);
pascal@19340 362 + len = MIN(a, l - b) - c;
pascal@19340 363 + xread(G.vnc_fd, line_buffer, a * G.bpp);
pascal@19340 364 + if (y >= 0 && y < G.rows && len > 0)
pascal@19340 365 + fb_set(y, x + b,
pascal@19340 366 + line_buffer + (c * G.bpp),
pascal@19340 367 + len);
pascal@19340 368 + }
pascal@19340 369 + }
pascal@19340 370 + }
pascal@19340 371 + break;
pascal@19340 372 + case VNC_SERVER_BELL:
pascal@19340 373 + break;
pascal@19340 374 + case VNC_SERVER_CUTTEXT:
pascal@19340 375 + xread(G.vnc_fd, &msg.cuttext.pad1, sizeof(msg.cuttext) - 1);
pascal@19340 376 + skip(ntohl(msg.cuttext.len));
pascal@19340 377 + break;
pascal@19340 378 + case VNC_SERVER_COLORMAP:
pascal@19340 379 + xread(G.vnc_fd, &msg.colormap.pad, sizeof(msg.colormap) - 1);
pascal@19340 380 + skip(ntohs(msg.colormap.n) * 3 * 2);
pascal@19340 381 + break;
pascal@19340 382 + default:
pascal@19340 383 + killed(1);
pascal@19340 384 + }
pascal@19340 385 +}
pascal@19340 386 +
pascal@19340 387 +static int update_scroll(struct scroll_data *s)
pascal@19340 388 +{
pascal@19340 389 + int shift = s->size / 5;
pascal@19340 390 + int max = s->srv_size - s->size;
pascal@19340 391 + int status = 0;
pascal@19340 392 + if (s->pos < s->offset) {
pascal@19340 393 + if ((s->offset -= shift) < 0)
pascal@19340 394 + s->offset = 0;
pascal@19340 395 + }
pascal@19340 396 + else if (s->pos >= s->offset + s->size && s->offset < max) {
pascal@19340 397 + if ((s->offset += shift) > max)
pascal@19340 398 + s->offset = max;
pascal@19340 399 + }
pascal@19340 400 + else status++;
pascal@19340 401 + s->pos = MAX(s->offset, MIN(s->offset + s->size - 1, s->pos));
pascal@19340 402 + return status;
pascal@19340 403 +}
pascal@19340 404 +
pascal@19340 405 +static void rat_event(void)
pascal@19340 406 +{
pascal@19340 407 + static u8 btn2vnc[8] = {
pascal@19340 408 + 0, VNC_BUTTON1_MASK, VNC_BUTTON3_MASK,
pascal@19340 409 + VNC_BUTTON1_MASK + VNC_BUTTON3_MASK, VNC_BUTTON2_MASK,
pascal@19340 410 + VNC_BUTTON1_MASK + VNC_BUTTON2_MASK,
pascal@19340 411 + VNC_BUTTON2_MASK + VNC_BUTTON3_MASK,
pascal@19340 412 + VNC_BUTTON1_MASK + VNC_BUTTON2_MASK + VNC_BUTTON3_MASK
pascal@19340 413 + };
pascal@19340 414 + signed char ie[4];
pascal@19340 415 + struct vnc_client_ratevent me = {VNC_CLIENT_RATEVENT};
pascal@19340 416 + int refresh;
pascal@19340 417 +
pascal@19340 418 + xread(G.rat_fd, &ie, sizeof(ie));
pascal@19340 419 + G.mc += ie[1];
pascal@19340 420 + G.mr -= ie[2];
pascal@19340 421 + refresh = 2 - update_scroll(&G.scroll[0]) - update_scroll(&G.scroll[1]);
pascal@19340 422 + me.mask = btn2vnc[G.rat_buttons = ie[0] & 7];
pascal@19340 423 + if (ie[3] > 0) /* wheel up */
pascal@19340 424 + me.mask |= VNC_BUTTON4_MASK;
pascal@19340 425 + if (ie[3] < 0) /* wheel down */
pascal@19340 426 + me.mask |= VNC_BUTTON5_MASK;
pascal@19340 427 + me.y = htons(G.mr);
pascal@19340 428 + me.x = htons(G.mc);
pascal@19340 429 + write(G.vnc_fd, &me, sizeof(me));
pascal@19340 430 + if (refresh)
pascal@19340 431 + vnc_refresh(0);
pascal@19340 432 +}
pascal@19340 433 +
pascal@19340 434 +static int press(int key, int down)
pascal@19340 435 +{
pascal@19340 436 + struct vnc_client_keyevent ke = {VNC_CLIENT_KEYEVENT};
pascal@19340 437 + ke.key = htonl(key);
pascal@19340 438 + ke.down = down;
pascal@19340 439 + return write(G.vnc_fd, &ke, sizeof(ke));
pascal@19340 440 +}
pascal@19340 441 +
pascal@19340 442 +static void kbd_event(void)
pascal@19340 443 +{
pascal@19340 444 + char key[1024];
pascal@19340 445 + int i, nr;
pascal@19340 446 +
pascal@19340 447 + if ((nr = read(0, key, sizeof(key))) <= 0 )
pascal@19340 448 + killed(1);
pascal@19340 449 + for (i = 0; i < nr; i++) {
pascal@19340 450 + int j, k;
pascal@19340 451 + int mod[4];
pascal@19340 452 + int nmod;
pascal@19340 453 +
pascal@19340 454 + k = nmod = 0;
pascal@19340 455 + switch (key[i]) {
pascal@19340 456 + case 0x08:
pascal@19340 457 + case 0x7f:
pascal@19340 458 + k = 0xff08;
pascal@19340 459 + break;
pascal@19340 460 + case 0x1b:
pascal@19340 461 + if (G.rat_buttons)
pascal@19340 462 + killed(0);
pascal@19340 463 + if (i + 2 < nr && key[i + 1] == '[') {
pascal@19340 464 + static const char arr2vnc[] = "HDACB";
pascal@19340 465 + char *p = strchr(arr2vnc, key[i + 2]);
pascal@19340 466 +
pascal@19340 467 + if (p) {
pascal@19340 468 + k = p - arr2vnc + 0xff50;
pascal@19340 469 + i += 2;
pascal@19340 470 + break;
pascal@19340 471 + }
pascal@19340 472 + }
pascal@19340 473 + if (i + 1 < nr) {
pascal@19340 474 + mod[nmod++] = 0xffe9;
pascal@19340 475 + i++;
pascal@19340 476 + }
pascal@19340 477 + case 0x09:
pascal@19340 478 + case 0x0d:
pascal@19340 479 + k = 0xff00;
pascal@19340 480 + goto getkey;
pascal@19340 481 + case 0x0c: /* Mouse button + ^L: redraw */
pascal@19340 482 + if (G.rat_buttons) {
pascal@19340 483 + vnc_refresh(0);
pascal@19340 484 + continue;
pascal@19340 485 + }
pascal@19340 486 + default:
pascal@19340 487 + getkey:
pascal@19340 488 + k += (unsigned char) key[i];
pascal@19340 489 + }
pascal@19340 490 + if ((k >= 'A' && k <= 'Z') || strchr(":\"<>?{}|+_()*&^%$#@!~", k))
pascal@19340 491 + mod[nmod++] = 0xffe1;
pascal@19340 492 + if (k >= 1 && k <= 26) {
pascal@19340 493 + k += 'a' - 1;
pascal@19340 494 + mod[nmod++] = 0xffe3;
pascal@19340 495 + }
pascal@19340 496 + mod[nmod] = k;
pascal@19340 497 + for (j = 0; j <= nmod; j++)
pascal@19340 498 + press(mod[j], 1);
pascal@19340 499 + press(k, 0);
pascal@19340 500 + for (j = 0; j < nmod; j++)
pascal@19340 501 + press(mod[j], 0);
pascal@19340 502 + }
pascal@19340 503 +}
pascal@19340 504 +
pascal@19340 505 +static void term_setup(void)
pascal@19340 506 +{
pascal@19340 507 + struct termios termios;
pascal@19340 508 +#define INITSTR "\x1b[?25l\x1b[2J\x1b[H** fbvnc **"
pascal@19340 509 +
pascal@19340 510 + write(STDOUT_FILENO, INITSTR, sizeof(INITSTR));
pascal@19340 511 + tcgetattr (STDIN_FILENO, &termios);
pascal@19340 512 + G.term_orig = termios;
pascal@19340 513 + cfmakeraw(&termios);
pascal@19340 514 + tcsetattr_stdin_TCSANOW(&termios);
pascal@19340 515 +}
pascal@19340 516 +
pascal@19340 517 +int fbvnc_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
pascal@19340 518 +int fbvnc_main(int argc, char **argv)
pascal@19340 519 +{
pascal@19340 520 + char *host = (char *) "127.0.0.1";
pascal@19340 521 + int port, pending = 0;
pascal@19340 522 +
pascal@19340 523 + INIT_G();
pascal@19340 524 + if (argc >= 2)
pascal@19340 525 + host = argv[1];
pascal@19340 526 + port = bb_lookup_port((argc >= 3) ? argv[2] : "vnc", "tcp", 5900);
pascal@19340 527 + G.vnc_fd = create_and_connect_stream_or_die(host, port);
pascal@19340 528 + vnc_init();
pascal@19340 529 + G.rat_fd = open("/dev/input/mice", O_RDWR);
pascal@19340 530 + write(G.rat_fd, "\xf3\xc8\xf3\x64\xf3\x50", 6); /* for using mouse wheel */
pascal@19340 531 + read(G.rat_fd, line_buffer, 1);
pascal@19340 532 + term_setup();
pascal@19340 533 + atexit(cleanup);
pascal@19340 534 + bb_signals(BB_FATAL_SIGS, killed);
pascal@19340 535 +
pascal@19340 536 + G.ufds[0].events =
pascal@19340 537 + G.ufds[1].events =
pascal@19340 538 + G.ufds[2].events = POLLIN;
pascal@19340 539 + vnc_refresh(0);
pascal@19340 540 + while (1) {
pascal@19340 541 + int status = poll(G.ufds, 3, 500);
pascal@19340 542 + if (status == -1 && errno != EINTR)
pascal@19340 543 + killed(1);
pascal@19340 544 + if (!status)
pascal@19340 545 + continue;
pascal@19340 546 + if (G.ufds[0].revents & POLLIN)
pascal@19340 547 + kbd_event();
pascal@19340 548 + if (G.ufds[1].revents & POLLIN) {
pascal@19340 549 + vnc_event();
pascal@19340 550 + pending = 0;
pascal@19340 551 + }
pascal@19340 552 + if (G.ufds[2].revents & POLLIN)
pascal@19340 553 + rat_event();
pascal@19340 554 + if (!pending++)
pascal@19340 555 + vnc_refresh(1);
pascal@19340 556 + }
pascal@19340 557 +}
pascal@19340 558 --- /dev/null
pascal@19340 559 +++ busybox/util-linux/vnc.h
pascal@19340 560 @@ -0,0 +1,124 @@
pascal@19340 561 +#define VNC_CONN_FAILED 0
pascal@19340 562 +#define VNC_CONN_NOAUTH 1
pascal@19340 563 +#define VNC_CONN_AUTH 2
pascal@19340 564 +
pascal@19340 565 +#define VNC_AUTH_OK 0
pascal@19340 566 +#define VNC_AUTH_FAILED 1
pascal@19340 567 +#define VNC_AUTH_TOOMANY 2
pascal@19340 568 +
pascal@19340 569 +#define VNC_SERVER_FBUP 0
pascal@19340 570 +#define VNC_SERVER_COLORMAP 1
pascal@19340 571 +#define VNC_SERVER_BELL 2
pascal@19340 572 +#define VNC_SERVER_CUTTEXT 3
pascal@19340 573 +
pascal@19340 574 +#define VNC_CLIENT_PIXFMT 0
pascal@19340 575 +#define VNC_CLIENT_COLORMAP 1
pascal@19340 576 +#define VNC_CLIENT_SETENC 2
pascal@19340 577 +#define VNC_CLIENT_FBUP 3
pascal@19340 578 +#define VNC_CLIENT_KEYEVENT 4
pascal@19340 579 +#define VNC_CLIENT_RATEVENT 5
pascal@19340 580 +#define VNC_CLIENT_CUTTEXT 6
pascal@19340 581 +
pascal@19340 582 +#define VNC_ENC_RAW 0
pascal@19340 583 +#define VNC_ENC_COPYRECT 1
pascal@19340 584 +#define VNC_ENC_RRE 2
pascal@19340 585 +#define VNC_ENC_CORRE 4
pascal@19340 586 +#define VNC_ENC_HEXTILE 5
pascal@19340 587 +
pascal@19340 588 +#define VNC_BUTTON1_MASK 0x01
pascal@19340 589 +#define VNC_BUTTON2_MASK 0x02
pascal@19340 590 +#define VNC_BUTTON3_MASK 0x04
pascal@19340 591 +#define VNC_BUTTON4_MASK 0x10
pascal@19340 592 +#define VNC_BUTTON5_MASK 0x08
pascal@19340 593 +
pascal@19340 594 +typedef unsigned char u8;
pascal@19340 595 +typedef unsigned short u16;
pascal@19340 596 +typedef unsigned int u32;
pascal@19340 597 +
pascal@19340 598 +struct vnc_pixelfmt {
pascal@19340 599 + u8 bpp;
pascal@19340 600 + u8 depth;
pascal@19340 601 + u8 bigendian;
pascal@19340 602 + u8 truecolor;
pascal@19340 603 + u16 rmax;
pascal@19340 604 + u16 gmax;
pascal@19340 605 + u16 bmax;
pascal@19340 606 + u8 rshl;
pascal@19340 607 + u8 gshl;
pascal@19340 608 + u8 bshl;
pascal@19340 609 +
pascal@19340 610 + u8 pad1;
pascal@19340 611 + u16 pad2;
pascal@19340 612 +};
pascal@19340 613 +
pascal@19340 614 +struct vnc_client_init {
pascal@19340 615 + u8 shared;
pascal@19340 616 +};
pascal@19340 617 +
pascal@19340 618 +struct vnc_server_init {
pascal@19340 619 + u16 w;
pascal@19340 620 + u16 h;
pascal@19340 621 + struct vnc_pixelfmt fmt;
pascal@19340 622 + u32 len;
pascal@19340 623 + /* char name[len]; */
pascal@19340 624 +};
pascal@19340 625 +
pascal@19340 626 +struct vnc_rect {
pascal@19340 627 + u16 x, y;
pascal@19340 628 + u16 w, h;
pascal@19340 629 + u32 enc;
pascal@19340 630 + /* rect bytes */
pascal@19340 631 +};
pascal@19340 632 +
pascal@19340 633 +struct vnc_server_fbup {
pascal@19340 634 + u8 type;
pascal@19340 635 + u8 pad;
pascal@19340 636 + u16 n;
pascal@19340 637 + /* struct vnc_rect rects[n]; */
pascal@19340 638 +};
pascal@19340 639 +
pascal@19340 640 +struct vnc_server_cuttext {
pascal@19340 641 + u8 type;
pascal@19340 642 + u8 pad1;
pascal@19340 643 + u16 pad2;
pascal@19340 644 + u32 len;
pascal@19340 645 + /* char text[length] */
pascal@19340 646 +};
pascal@19340 647 +
pascal@19340 648 +struct vnc_server_colormap {
pascal@19340 649 + u8 type;
pascal@19340 650 + u8 pad;
pascal@19340 651 + u16 first;
pascal@19340 652 + u16 n;
pascal@19340 653 + /* u8 colors[n * 3 * 2]; */
pascal@19340 654 +};
pascal@19340 655 +
pascal@19340 656 +struct vnc_client_pixelfmt {
pascal@19340 657 + u8 type;
pascal@19340 658 + u8 pad1;
pascal@19340 659 + u16 pad2;
pascal@19340 660 + struct vnc_pixelfmt format;
pascal@19340 661 +};
pascal@19340 662 +
pascal@19340 663 +struct vnc_client_fbup {
pascal@19340 664 + u8 type;
pascal@19340 665 + u8 inc;
pascal@19340 666 + u16 x;
pascal@19340 667 + u16 y;
pascal@19340 668 + u16 w;
pascal@19340 669 + u16 h;
pascal@19340 670 +};
pascal@19340 671 +
pascal@19340 672 +struct vnc_client_keyevent {
pascal@19340 673 + u8 type;
pascal@19340 674 + u8 down;
pascal@19340 675 + u16 pad;
pascal@19340 676 + u32 key;
pascal@19340 677 +};
pascal@19340 678 +
pascal@19340 679 +struct vnc_client_ratevent {
pascal@19340 680 + u8 type;
pascal@19340 681 + u8 mask;
pascal@19340 682 + u16 x;
pascal@19340 683 + u16 y;
pascal@19340 684 +};