San Mehat | a430b2b | 2014-09-23 08:30:51 -0700 | [diff] [blame] | 1 | /* |
| 2 | Copyright (C) 2002-2010 Karl J. Runge <runge@karlrunge.com> |
| 3 | All rights reserved. |
| 4 | |
| 5 | This file is part of x11vnc. |
| 6 | |
| 7 | x11vnc is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 2 of the License, or (at |
| 10 | your option) any later version. |
| 11 | |
| 12 | x11vnc is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with x11vnc; if not, write to the Free Software |
| 19 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA |
| 20 | or see <http://www.gnu.org/licenses/>. |
| 21 | |
| 22 | In addition, as a special exception, Karl J. Runge |
| 23 | gives permission to link the code of its release of x11vnc with the |
| 24 | OpenSSL project's "OpenSSL" library (or with modified versions of it |
| 25 | that use the same license as the "OpenSSL" library), and distribute |
| 26 | the linked executables. You must obey the GNU General Public License |
| 27 | in all respects for all of the code used other than "OpenSSL". If you |
| 28 | modify this file, you may extend this exception to your version of the |
| 29 | file, but you are not obligated to do so. If you do not wish to do |
| 30 | so, delete this exception statement from your version. |
| 31 | */ |
| 32 | |
| 33 | /* -- connections.c -- */ |
| 34 | |
| 35 | #include "x11vnc.h" |
| 36 | #include "inet.h" |
| 37 | #include "remote.h" |
| 38 | #include "keyboard.h" |
| 39 | #include "cleanup.h" |
| 40 | #include "gui.h" |
| 41 | #include "solid.h" |
| 42 | #include "rates.h" |
| 43 | #include "screen.h" |
| 44 | #include "unixpw.h" |
| 45 | #include "user.h" |
| 46 | #include "scan.h" |
| 47 | #include "sslcmds.h" |
| 48 | #include "sslhelper.h" |
| 49 | #include "xwrappers.h" |
| 50 | #include "xevents.h" |
| 51 | #include "win_utils.h" |
| 52 | #include "macosx.h" |
| 53 | #include "macosxCG.h" |
| 54 | #include "userinput.h" |
| 55 | #include "pointer.h" |
| 56 | #include "xrandr.h" |
| 57 | |
| 58 | /* |
| 59 | * routines for handling incoming, outgoing, etc connections |
| 60 | */ |
| 61 | |
| 62 | /* string for the VNC_CONNECT property */ |
| 63 | char vnc_connect_str[VNC_CONNECT_MAX+1]; |
| 64 | Atom vnc_connect_prop = None; |
| 65 | char x11vnc_remote_str[X11VNC_REMOTE_MAX+1]; |
| 66 | Atom x11vnc_remote_prop = None; |
| 67 | rfbClientPtr inetd_client = NULL; |
| 68 | |
| 69 | int all_clients_initialized(void); |
| 70 | char *list_clients(void); |
| 71 | int new_fb_size_clients(rfbScreenInfoPtr s); |
| 72 | void close_all_clients(void); |
| 73 | void close_clients(char *str); |
| 74 | void set_client_input(char *str); |
| 75 | void set_child_info(void); |
| 76 | int cmd_ok(char *cmd); |
| 77 | void client_gone(rfbClientPtr client); |
| 78 | void client_gone_chat_helper(rfbClientPtr client); |
| 79 | void reverse_connect(char *str); |
| 80 | void set_vnc_connect_prop(char *str); |
| 81 | void read_vnc_connect_prop(int); |
| 82 | void set_x11vnc_remote_prop(char *str); |
| 83 | void read_x11vnc_remote_prop(int); |
| 84 | void check_connect_inputs(void); |
| 85 | void check_gui_inputs(void); |
| 86 | rfbClientPtr create_new_client(int sock, int start_thread); |
| 87 | enum rfbNewClientAction new_client(rfbClientPtr client); |
| 88 | enum rfbNewClientAction new_client_chat_helper(rfbClientPtr client); |
| 89 | rfbBool password_check_chat_helper(rfbClientPtr cl, const char* response, int len); |
| 90 | void start_client_info_sock(char *host_port_cookie); |
| 91 | void send_client_info(char *str); |
| 92 | void adjust_grabs(int grab, int quiet); |
| 93 | void check_new_clients(void); |
| 94 | int accept_client(rfbClientPtr client); |
| 95 | void check_ipv6_listen(long usec); |
| 96 | void check_unix_sock(long usec); |
| 97 | int run_user_command(char *cmd, rfbClientPtr client, char *mode, char *input, |
| 98 | int len, FILE *output); |
| 99 | int check_access(char *addr); |
| 100 | void client_set_net(rfbClientPtr client); |
| 101 | char *get_xprop(char *prop, Window win); |
| 102 | int set_xprop(char *prop, Window win, char *value); |
| 103 | char *bcx_xattach(char *str, int *pg_init, int *kg_init); |
| 104 | void grab_state(int *ptr_grabbed, int *kbd_grabbed); |
| 105 | char *wininfo(Window win, int show_children); |
| 106 | |
| 107 | static rfbClientPtr *client_match(char *str); |
| 108 | static void free_client_data(rfbClientPtr client); |
| 109 | static void ugly_geom(char *p, int *x, int *y); |
| 110 | static int ugly_window(char *addr, char *userhost, int X, int Y, |
| 111 | int timeout, char *mode, int accept); |
| 112 | static int action_match(char *action, int rc); |
| 113 | static void check_connect_file(char *file); |
| 114 | static void send_client_connect(void); |
| 115 | |
| 116 | |
| 117 | /* |
| 118 | * check that all clients are in RFB_NORMAL state |
| 119 | */ |
| 120 | int all_clients_initialized(void) { |
| 121 | rfbClientIteratorPtr iter; |
| 122 | rfbClientPtr cl; |
| 123 | int ok = 1; |
| 124 | |
| 125 | if (! screen) { |
| 126 | return ok; |
| 127 | } |
| 128 | |
| 129 | iter = rfbGetClientIterator(screen); |
| 130 | while( (cl = rfbClientIteratorNext(iter)) ) { |
| 131 | if (cl->state != RFB_NORMAL) { |
| 132 | ok = 0; |
| 133 | } else { |
| 134 | client_normal_count++; |
| 135 | } |
| 136 | } |
| 137 | rfbReleaseClientIterator(iter); |
| 138 | |
| 139 | return ok; |
| 140 | } |
| 141 | |
| 142 | char *list_clients(void) { |
| 143 | rfbClientIteratorPtr iter; |
| 144 | rfbClientPtr cl; |
| 145 | char *list, tmp[256]; |
| 146 | int count = 0; |
| 147 | |
| 148 | if (!screen) { |
| 149 | return strdup(""); |
| 150 | } |
| 151 | |
| 152 | iter = rfbGetClientIterator(screen); |
| 153 | while( (cl = rfbClientIteratorNext(iter)) ) { |
| 154 | client_set_net(cl); |
| 155 | count++; |
| 156 | } |
| 157 | rfbReleaseClientIterator(iter); |
| 158 | |
| 159 | /* |
| 160 | * each client: |
| 161 | * <id>:<ip>:<port>:<user>:<unix>:<hostname>:<input>:<loginview>:<time>, |
| 162 | * 8+1+64+1+5+1+24+1+24+1+256+1+5+1+1+1+10+1 |
| 163 | * 123.123.123.123:60000/0x11111111-rw, |
| 164 | * so count+1 * 1000 must cover it. |
| 165 | */ |
| 166 | list = (char *) malloc((count+1)*1000); |
| 167 | |
| 168 | list[0] = '\0'; |
| 169 | |
| 170 | iter = rfbGetClientIterator(screen); |
| 171 | while( (cl = rfbClientIteratorNext(iter)) ) { |
| 172 | ClientData *cd = (ClientData *) cl->clientData; |
| 173 | char *tmp_host, *p; |
| 174 | |
| 175 | if (! cd) { |
| 176 | continue; |
| 177 | } |
| 178 | if (*list != '\0') { |
| 179 | strcat(list, ","); |
| 180 | } |
| 181 | sprintf(tmp, "0x%x:", cd->uid); |
| 182 | strcat(list, tmp); |
| 183 | p = tmp_host = strdup(cl->host); |
| 184 | while (*p) { |
| 185 | if (*p == ':') *p = '#'; |
| 186 | p++; |
| 187 | } |
| 188 | strcat(list, tmp_host); |
| 189 | free(tmp_host); |
| 190 | strcat(list, ":"); |
| 191 | sprintf(tmp, "%d:", cd->client_port); |
| 192 | strcat(list, tmp); |
| 193 | if (cd->username[0] == '\0') { |
| 194 | char *s = ident_username(cl); |
| 195 | if (s) free(s); |
| 196 | } |
| 197 | if (strstr(cd->username, "UNIX:") == cd->username) { |
| 198 | strcat(list, cd->username + strlen("UNIX:")); |
| 199 | } else { |
| 200 | strcat(list, cd->username); |
| 201 | } |
| 202 | strcat(list, ":"); |
| 203 | if (cd->unixname[0] == '\0') { |
| 204 | strcat(list, "none"); |
| 205 | } else { |
| 206 | strcat(list, cd->unixname); |
| 207 | } |
| 208 | strcat(list, ":"); |
| 209 | p = tmp_host = strdup(cd->hostname); |
| 210 | while (*p) { |
| 211 | if (*p == ':') *p = '#'; |
| 212 | p++; |
| 213 | } |
| 214 | strcat(list, tmp_host); |
| 215 | free(tmp_host); |
| 216 | strcat(list, ":"); |
| 217 | strcat(list, cd->input); |
| 218 | strcat(list, ":"); |
| 219 | sprintf(tmp, "%d", cd->login_viewonly); |
| 220 | strcat(list, tmp); |
| 221 | strcat(list, ":"); |
| 222 | sprintf(tmp, "%d", (int) cd->login_time); |
| 223 | strcat(list, tmp); |
| 224 | } |
| 225 | rfbReleaseClientIterator(iter); |
| 226 | return list; |
| 227 | } |
| 228 | |
| 229 | /* count number of clients supporting NewFBSize */ |
| 230 | int new_fb_size_clients(rfbScreenInfoPtr s) { |
| 231 | rfbClientIteratorPtr iter; |
| 232 | rfbClientPtr cl; |
| 233 | int count = 0; |
| 234 | |
| 235 | if (! s) { |
| 236 | return 0; |
| 237 | } |
| 238 | |
| 239 | iter = rfbGetClientIterator(s); |
| 240 | while( (cl = rfbClientIteratorNext(iter)) ) { |
| 241 | if (cl->useNewFBSize) { |
| 242 | count++; |
| 243 | } |
| 244 | } |
| 245 | rfbReleaseClientIterator(iter); |
| 246 | return count; |
| 247 | } |
| 248 | |
| 249 | void close_all_clients(void) { |
| 250 | rfbClientIteratorPtr iter; |
| 251 | rfbClientPtr cl; |
| 252 | |
| 253 | if (! screen) { |
| 254 | return; |
| 255 | } |
| 256 | |
| 257 | iter = rfbGetClientIterator(screen); |
| 258 | while( (cl = rfbClientIteratorNext(iter)) ) { |
| 259 | rfbCloseClient(cl); |
| 260 | rfbClientConnectionGone(cl); |
| 261 | } |
| 262 | rfbReleaseClientIterator(iter); |
| 263 | } |
| 264 | |
| 265 | static rfbClientPtr *client_match(char *str) { |
| 266 | rfbClientIteratorPtr iter; |
| 267 | rfbClientPtr cl, *cl_list; |
| 268 | int i, n, host_warn = 0, hex_warn = 0; |
| 269 | |
| 270 | n = client_count + 10; |
| 271 | cl_list = (rfbClientPtr *) malloc(n * sizeof(rfbClientPtr)); |
| 272 | |
| 273 | i = 0; |
| 274 | iter = rfbGetClientIterator(screen); |
| 275 | while( (cl = rfbClientIteratorNext(iter)) ) { |
| 276 | ClientData *cd = (ClientData *) cl->clientData; |
| 277 | if (strstr(str, "0x") == str) { |
| 278 | unsigned int in; |
| 279 | int id; |
| 280 | if (! cd) { |
| 281 | continue; |
| 282 | } |
| 283 | if (sscanf(str, "0x%x", &in) != 1) { |
| 284 | if (hex_warn++) { |
| 285 | continue; |
| 286 | } |
| 287 | rfbLog("skipping invalid client hex id: %s\n", |
| 288 | str); |
| 289 | continue; |
| 290 | } |
| 291 | id = (unsigned int) in; |
| 292 | if (cd->uid == id) { |
| 293 | cl_list[i++] = cl; |
| 294 | } |
| 295 | } else { |
| 296 | int port = -1; |
| 297 | char *rstr = strdup(str); |
| 298 | char *q = strrchr(rstr, ':'); |
| 299 | if (q) { |
| 300 | port = atoi(q+1); |
| 301 | *q = '\0'; |
| 302 | if (port == 0 && q[1] != '0') { |
| 303 | port = -1; |
| 304 | } else if (port < 0) { |
| 305 | port = -port; |
| 306 | } else if (port < 200) { |
| 307 | port = 5500 + port; |
| 308 | } |
| 309 | } |
| 310 | if (ipv6_ip(str)) { |
| 311 | ; |
| 312 | } else if (! dotted_ip(str, 0)) { |
| 313 | char *orig = rstr; |
| 314 | rstr = host2ip(rstr); |
| 315 | free(orig); |
| 316 | if (rstr == NULL || *rstr == '\0') { |
| 317 | if (host_warn++) { |
| 318 | continue; |
| 319 | } |
| 320 | rfbLog("skipping bad lookup: \"%s\"\n", str); |
| 321 | continue; |
| 322 | } |
| 323 | rfbLog("lookup: %s -> %s port=%d\n", str, rstr, port); |
| 324 | } |
| 325 | if (!strcmp(rstr, cl->host)) { |
| 326 | int ok = 1; |
| 327 | if (port > 0) { |
| 328 | if (cd != NULL && cd->client_port > 0) { |
| 329 | if (cd->client_port != port) { |
| 330 | ok = 0; |
| 331 | } |
| 332 | } else { |
| 333 | int cport = get_remote_port(cl->sock); |
| 334 | if (cport != port) { |
| 335 | ok = 0; |
| 336 | } |
| 337 | } |
| 338 | } |
| 339 | if (ok) { |
| 340 | cl_list[i++] = cl; |
| 341 | } |
| 342 | } |
| 343 | free(rstr); |
| 344 | } |
| 345 | if (i >= n - 1) { |
| 346 | break; |
| 347 | } |
| 348 | } |
| 349 | rfbReleaseClientIterator(iter); |
| 350 | |
| 351 | cl_list[i] = NULL; |
| 352 | |
| 353 | return cl_list; |
| 354 | } |
| 355 | |
| 356 | void close_clients(char *str) { |
| 357 | rfbClientPtr *cl_list, *cp; |
| 358 | |
| 359 | if (!strcmp(str, "all") || !strcmp(str, "*")) { |
| 360 | close_all_clients(); |
| 361 | return; |
| 362 | } |
| 363 | |
| 364 | if (! screen) { |
| 365 | return; |
| 366 | } |
| 367 | |
| 368 | cl_list = client_match(str); |
| 369 | |
| 370 | cp = cl_list; |
| 371 | while (*cp) { |
| 372 | rfbCloseClient(*cp); |
| 373 | rfbClientConnectionGone(*cp); |
| 374 | cp++; |
| 375 | } |
| 376 | free(cl_list); |
| 377 | } |
| 378 | |
| 379 | void set_client_input(char *str) { |
| 380 | rfbClientPtr *cl_list, *cp; |
| 381 | char *p, *val; |
| 382 | |
| 383 | /* str is "match:value" */ |
| 384 | |
| 385 | if (! screen) { |
| 386 | return; |
| 387 | } |
| 388 | |
| 389 | p = strrchr(str, ':'); |
| 390 | if (! p) { |
| 391 | return; |
| 392 | } |
| 393 | *p = '\0'; |
| 394 | p++; |
| 395 | val = short_kmbcf(p); |
| 396 | |
| 397 | cl_list = client_match(str); |
| 398 | |
| 399 | cp = cl_list; |
| 400 | while (*cp) { |
| 401 | ClientData *cd = (ClientData *) (*cp)->clientData; |
| 402 | if (! cd) { |
| 403 | continue; |
| 404 | } |
| 405 | cd->input[0] = '\0'; |
| 406 | strcat(cd->input, "_"); |
| 407 | strcat(cd->input, val); |
| 408 | cp++; |
| 409 | } |
| 410 | |
| 411 | free(val); |
| 412 | free(cl_list); |
| 413 | } |
| 414 | |
| 415 | void set_child_info(void) { |
| 416 | char pid[16]; |
| 417 | /* set up useful environment for child process */ |
| 418 | sprintf(pid, "%d", (int) getpid()); |
| 419 | set_env("X11VNC_PID", pid); |
| 420 | if (program_name) { |
| 421 | /* e.g. for remote control -R */ |
| 422 | set_env("X11VNC_PROG", program_name); |
| 423 | } |
| 424 | if (program_cmdline) { |
| 425 | set_env("X11VNC_CMDLINE", program_cmdline); |
| 426 | } |
| 427 | if (raw_fb_str) { |
| 428 | set_env("X11VNC_RAWFB_STR", raw_fb_str); |
| 429 | } else { |
| 430 | set_env("X11VNC_RAWFB_STR", ""); |
| 431 | } |
| 432 | } |
| 433 | |
| 434 | int cmd_ok(char *cmd) { |
| 435 | char *p, *str; |
| 436 | if (no_external_cmds) { |
| 437 | return 0; |
| 438 | } |
| 439 | if (! cmd || cmd[0] == '\0') { |
| 440 | return 0; |
| 441 | } |
| 442 | if (! allowed_external_cmds) { |
| 443 | /* default, allow any (overridden by -nocmds) */ |
| 444 | return 1; |
| 445 | } |
| 446 | |
| 447 | str = strdup(allowed_external_cmds); |
| 448 | p = strtok(str, ","); |
| 449 | while (p) { |
| 450 | if (!strcmp(p, cmd)) { |
| 451 | free(str); |
| 452 | return 1; |
| 453 | } |
| 454 | p = strtok(NULL, ","); |
| 455 | } |
| 456 | free(str); |
| 457 | return 0; |
| 458 | } |
| 459 | |
| 460 | /* |
| 461 | * utility to run a user supplied command setting some RFB_ env vars. |
| 462 | * used by, e.g., accept_client() and client_gone() |
| 463 | */ |
| 464 | int run_user_command(char *cmd, rfbClientPtr client, char *mode, char *input, |
| 465 | int len, FILE *output) { |
| 466 | char *old_display = NULL; |
| 467 | char *addr = NULL; |
| 468 | char str[100]; |
| 469 | int rc, ok; |
| 470 | ClientData *cd = NULL; |
| 471 | client_set_net(client); |
| 472 | if (client != NULL) { |
| 473 | cd = (ClientData *) client->clientData; |
| 474 | addr = client->host; |
| 475 | } |
| 476 | |
| 477 | if (addr == NULL || addr[0] == '\0') { |
| 478 | addr = "unknown-host"; |
| 479 | } |
| 480 | |
| 481 | /* set RFB_CLIENT_ID to semi unique id for command to use */ |
| 482 | if (cd && cd->uid) { |
| 483 | sprintf(str, "0x%x", cd->uid); |
| 484 | } else { |
| 485 | /* not accepted yet: */ |
| 486 | sprintf(str, "0x%x", clients_served); |
| 487 | } |
| 488 | set_env("RFB_CLIENT_ID", str); |
| 489 | |
| 490 | /* set RFB_CLIENT_IP to IP addr for command to use */ |
| 491 | set_env("RFB_CLIENT_IP", addr); |
| 492 | |
| 493 | /* set RFB_X11VNC_PID to our pid for command to use */ |
| 494 | sprintf(str, "%d", (int) getpid()); |
| 495 | set_env("RFB_X11VNC_PID", str); |
| 496 | |
| 497 | if (client == NULL) { |
| 498 | ; |
| 499 | } else if (client->state == RFB_PROTOCOL_VERSION) { |
| 500 | set_env("RFB_STATE", "PROTOCOL_VERSION"); |
| 501 | } else if (client->state == RFB_SECURITY_TYPE) { |
| 502 | set_env("RFB_STATE", "SECURITY_TYPE"); |
| 503 | } else if (client->state == RFB_AUTHENTICATION) { |
| 504 | set_env("RFB_STATE", "AUTHENTICATION"); |
| 505 | } else if (client->state == RFB_INITIALISATION) { |
| 506 | set_env("RFB_STATE", "INITIALISATION"); |
| 507 | } else if (client->state == RFB_NORMAL) { |
| 508 | set_env("RFB_STATE", "NORMAL"); |
| 509 | } else { |
| 510 | set_env("RFB_STATE", "UNKNOWN"); |
| 511 | } |
| 512 | if (certret_str) { |
| 513 | set_env("RFB_SSL_CLIENT_CERT", certret_str); |
| 514 | } else { |
| 515 | set_env("RFB_SSL_CLIENT_CERT", ""); |
| 516 | } |
| 517 | |
| 518 | /* set RFB_CLIENT_PORT to peer port for command to use */ |
| 519 | if (cd && cd->client_port > 0) { |
| 520 | sprintf(str, "%d", cd->client_port); |
| 521 | } else if (client) { |
| 522 | sprintf(str, "%d", get_remote_port(client->sock)); |
| 523 | } |
| 524 | set_env("RFB_CLIENT_PORT", str); |
| 525 | |
| 526 | set_env("RFB_MODE", mode); |
| 527 | |
| 528 | /* |
| 529 | * now do RFB_SERVER_IP and RFB_SERVER_PORT (i.e. us!) |
| 530 | * This will establish a 5-tuple (including tcp) the external |
| 531 | * program can potentially use to work out the virtual circuit |
| 532 | * for this connection. |
| 533 | */ |
| 534 | if (cd && cd->server_ip) { |
| 535 | set_env("RFB_SERVER_IP", cd->server_ip); |
| 536 | } else if (client) { |
| 537 | char *sip = get_local_host(client->sock); |
| 538 | set_env("RFB_SERVER_IP", sip); |
| 539 | if (sip) free(sip); |
| 540 | } |
| 541 | |
| 542 | if (cd && cd->server_port > 0) { |
| 543 | sprintf(str, "%d", cd->server_port); |
| 544 | } else if (client) { |
| 545 | sprintf(str, "%d", get_local_port(client->sock)); |
| 546 | } |
| 547 | set_env("RFB_SERVER_PORT", str); |
| 548 | |
| 549 | if (cd) { |
| 550 | sprintf(str, "%d", cd->login_viewonly); |
| 551 | } else { |
| 552 | sprintf(str, "%d", -1); |
| 553 | } |
| 554 | set_env("RFB_LOGIN_VIEWONLY", str); |
| 555 | |
| 556 | if (cd) { |
| 557 | sprintf(str, "%d", (int) cd->login_time); |
| 558 | } else { |
| 559 | sprintf(str, ">%d", (int) time(NULL)); |
| 560 | } |
| 561 | set_env("RFB_LOGIN_TIME", str); |
| 562 | |
| 563 | sprintf(str, "%d", (int) time(NULL)); |
| 564 | set_env("RFB_CURRENT_TIME", str); |
| 565 | |
| 566 | if (!cd || !cd->username || cd->username[0] == '\0') { |
| 567 | set_env("RFB_USERNAME", "unknown-user"); |
| 568 | } else { |
| 569 | set_env("RFB_USERNAME", cd->username); |
| 570 | } |
| 571 | /* |
| 572 | * Better set DISPLAY to the one we are polling, if they |
| 573 | * want something trickier, they can handle on their own |
| 574 | * via environment, etc. |
| 575 | */ |
| 576 | if (getenv("DISPLAY")) { |
| 577 | old_display = strdup(getenv("DISPLAY")); |
| 578 | } |
| 579 | |
| 580 | if (raw_fb && ! dpy) { /* raw_fb hack */ |
| 581 | set_env("DISPLAY", "rawfb"); |
| 582 | } else { |
| 583 | set_env("DISPLAY", DisplayString(dpy)); |
| 584 | } |
| 585 | |
| 586 | /* |
| 587 | * work out the number of clients (have to use client_count |
| 588 | * since there is deadlock in rfbGetClientIterator) |
| 589 | */ |
| 590 | sprintf(str, "%d", client_count); |
| 591 | set_env("RFB_CLIENT_COUNT", str); |
| 592 | |
| 593 | /* gone, accept, afteraccept */ |
| 594 | ok = 0; |
| 595 | if (!strcmp(mode, "env")) { |
| 596 | return 1; |
| 597 | } |
| 598 | if (!strcmp(mode, "accept") && cmd_ok("accept")) { |
| 599 | ok = 1; |
| 600 | } |
| 601 | if (!strcmp(mode, "afteraccept") && cmd_ok("afteraccept")) { |
| 602 | ok = 1; |
| 603 | } |
| 604 | if (!strcmp(mode, "gone") && cmd_ok("gone")) { |
| 605 | ok = 1; |
| 606 | } |
| 607 | if (!strcmp(mode, "cmd_verify") && cmd_ok("unixpw")) { |
| 608 | ok = 1; |
| 609 | } |
| 610 | if (!strcmp(mode, "read_passwds") && cmd_ok("passwdfile")) { |
| 611 | ok = 1; |
| 612 | } |
| 613 | if (!strcmp(mode, "custom_passwd") && cmd_ok("custom_passwd")) { |
| 614 | ok = 1; |
| 615 | } |
| 616 | if (no_external_cmds || !ok) { |
| 617 | rfbLogEnable(1); |
| 618 | rfbLog("cannot run external commands in -nocmds mode:\n"); |
| 619 | rfbLog(" \"%s\"\n", cmd); |
| 620 | rfbLog(" exiting.\n"); |
| 621 | clean_up_exit(1); |
| 622 | } |
| 623 | rfbLog("running command:\n"); |
| 624 | if (!quiet) { |
| 625 | fprintf(stderr, "\n %s\n\n", cmd); |
| 626 | } |
| 627 | close_exec_fds(); |
| 628 | |
| 629 | if (output != NULL) { |
| 630 | FILE *ph; |
| 631 | char line[1024]; |
| 632 | char *cmd2 = NULL; |
| 633 | char tmp[] = "/tmp/x11vnc-tmp.XXXXXX"; |
| 634 | int deltmp = 0; |
| 635 | |
| 636 | if (input != NULL) { |
| 637 | int tmp_fd = mkstemp(tmp); |
| 638 | if (tmp_fd < 0) { |
| 639 | rfbLog("mkstemp failed on: %s\n", tmp); |
| 640 | clean_up_exit(1); |
| 641 | } |
| 642 | write(tmp_fd, input, len); |
| 643 | close(tmp_fd); |
| 644 | deltmp = 1; |
| 645 | cmd2 = (char *) malloc(100 + strlen(tmp) + strlen(cmd)); |
| 646 | sprintf(cmd2, "/bin/cat %s | %s", tmp, cmd); |
| 647 | |
| 648 | ph = popen(cmd2, "r"); |
| 649 | } else { |
| 650 | ph = popen(cmd, "r"); |
| 651 | } |
| 652 | if (ph == NULL) { |
| 653 | rfbLog("popen(%s) failed", cmd); |
| 654 | rfbLogPerror("popen"); |
| 655 | clean_up_exit(1); |
| 656 | } |
| 657 | memset(line, 0, sizeof(line)); |
| 658 | while (fgets(line, sizeof(line), ph) != NULL) { |
| 659 | int j, k = -1; |
| 660 | if (0) fprintf(stderr, "line: %s", line); |
| 661 | /* take care to handle embedded nulls */ |
| 662 | for (j=0; j < (int) sizeof(line); j++) { |
| 663 | if (line[j] != '\0') { |
| 664 | k = j; |
| 665 | } |
| 666 | } |
| 667 | if (k >= 0) { |
| 668 | write(fileno(output), line, k+1); |
| 669 | } |
| 670 | memset(line, 0, sizeof(line)); |
| 671 | } |
| 672 | |
| 673 | rc = pclose(ph); |
| 674 | |
| 675 | if (cmd2 != NULL) { |
| 676 | free(cmd2); |
| 677 | } |
| 678 | if (deltmp) { |
| 679 | unlink(tmp); |
| 680 | } |
| 681 | goto got_rc; |
| 682 | } else if (input != NULL) { |
| 683 | FILE *ph = popen(cmd, "w"); |
| 684 | if (ph == NULL) { |
| 685 | rfbLog("popen(%s) failed", cmd); |
| 686 | rfbLogPerror("popen"); |
| 687 | clean_up_exit(1); |
| 688 | } |
| 689 | write(fileno(ph), input, len); |
| 690 | rc = pclose(ph); |
| 691 | goto got_rc; |
| 692 | } |
| 693 | |
| 694 | #if LIBVNCSERVER_HAVE_FORK |
| 695 | { |
| 696 | pid_t pid, pidw; |
| 697 | struct sigaction sa, intr, quit; |
| 698 | sigset_t omask; |
| 699 | |
| 700 | sa.sa_handler = SIG_IGN; |
| 701 | sa.sa_flags = 0; |
| 702 | sigemptyset(&sa.sa_mask); |
| 703 | sigaction(SIGINT, &sa, &intr); |
| 704 | sigaction(SIGQUIT, &sa, &quit); |
| 705 | |
| 706 | sigaddset(&sa.sa_mask, SIGCHLD); |
| 707 | sigprocmask(SIG_BLOCK, &sa.sa_mask, &omask); |
| 708 | |
| 709 | if ((pid = fork()) > 0 || pid == -1) { |
| 710 | |
| 711 | if (pid != -1) { |
| 712 | pidw = waitpid(pid, &rc, 0); |
| 713 | } |
| 714 | |
| 715 | sigaction(SIGINT, &intr, (struct sigaction *) NULL); |
| 716 | sigaction(SIGQUIT, &quit, (struct sigaction *) NULL); |
| 717 | sigprocmask(SIG_SETMASK, &omask, (sigset_t *) NULL); |
| 718 | |
| 719 | if (pid == -1) { |
| 720 | fprintf(stderr, "could not fork\n"); |
| 721 | rfbLogPerror("fork"); |
| 722 | rc = system(cmd); |
| 723 | } |
| 724 | } else { |
| 725 | /* this should close port 5900, etc.. */ |
| 726 | int fd; |
| 727 | sigaction(SIGINT, &intr, (struct sigaction *) NULL); |
| 728 | sigaction(SIGQUIT, &quit, (struct sigaction *) NULL); |
| 729 | sigprocmask(SIG_SETMASK, &omask, (sigset_t *) NULL); |
| 730 | for (fd=3; fd<256; fd++) { |
| 731 | close(fd); |
| 732 | } |
| 733 | /* XXX test more */ |
| 734 | if (!strcmp(mode, "gone")) { |
| 735 | #if LIBVNCSERVER_HAVE_SETSID |
| 736 | setsid(); |
| 737 | #else |
| 738 | setpgrp(); |
| 739 | #endif |
| 740 | } |
| 741 | execlp("/bin/sh", "/bin/sh", "-c", cmd, (char *) NULL); |
| 742 | exit(1); |
| 743 | } |
| 744 | } |
| 745 | #else |
| 746 | rc = system(cmd); |
| 747 | #endif |
| 748 | got_rc: |
| 749 | |
| 750 | if (rc >= 256) { |
| 751 | rc = rc/256; |
| 752 | } |
| 753 | rfbLog("command returned: %d\n", rc); |
| 754 | |
| 755 | if (old_display) { |
| 756 | set_env("DISPLAY", old_display); |
| 757 | free(old_display); |
| 758 | } |
| 759 | |
| 760 | return rc; |
| 761 | } |
| 762 | |
| 763 | static void free_client_data(rfbClientPtr client) { |
| 764 | if (! client) { |
| 765 | return; |
| 766 | } |
| 767 | if (client->clientData) { |
| 768 | ClientData *cd = (ClientData *) client->clientData; |
| 769 | if (cd) { |
| 770 | if (cd->server_ip) { |
| 771 | free(cd->server_ip); |
| 772 | cd->server_ip = NULL; |
| 773 | } |
| 774 | if (cd->hostname) { |
| 775 | free(cd->hostname); |
| 776 | cd->hostname = NULL; |
| 777 | } |
| 778 | if (cd->username) { |
| 779 | free(cd->username); |
| 780 | cd->username = NULL; |
| 781 | } |
| 782 | if (cd->unixname) { |
| 783 | free(cd->unixname); |
| 784 | cd->unixname = NULL; |
| 785 | } |
| 786 | } |
| 787 | free(client->clientData); |
| 788 | client->clientData = NULL; |
| 789 | } |
| 790 | } |
| 791 | |
| 792 | static int accepted_client = 0; |
| 793 | |
| 794 | /* |
| 795 | * callback for when a client disconnects |
| 796 | */ |
| 797 | void client_gone(rfbClientPtr client) { |
| 798 | ClientData *cd = NULL; |
| 799 | |
| 800 | CLIENT_LOCK; |
| 801 | |
| 802 | client_count--; |
| 803 | if (client_count < 0) client_count = 0; |
| 804 | |
| 805 | speeds_net_rate_measured = 0; |
| 806 | speeds_net_latency_measured = 0; |
| 807 | |
| 808 | rfbLog("client_count: %d\n", client_count); |
| 809 | last_client_gone = dnow(); |
| 810 | |
| 811 | if (unixpw_in_progress && unixpw_client) { |
| 812 | if (client == unixpw_client) { |
| 813 | unixpw_in_progress = 0; |
| 814 | /* mutex */ |
| 815 | screen->permitFileTransfer = unixpw_file_xfer_save; |
| 816 | if ((tightfilexfer = unixpw_tightvnc_xfer_save)) { |
| 817 | #ifdef LIBVNCSERVER_WITH_TIGHTVNC_FILETRANSFER |
| 818 | rfbLog("rfbRegisterTightVNCFileTransferExtension: 3\n"); |
| 819 | rfbRegisterTightVNCFileTransferExtension(); |
| 820 | #endif |
| 821 | } |
| 822 | unixpw_client = NULL; |
| 823 | copy_screen(); |
| 824 | } |
| 825 | } |
| 826 | |
| 827 | |
| 828 | if (no_autorepeat && client_count == 0) { |
| 829 | autorepeat(1, 0); |
| 830 | } |
| 831 | if (use_solid_bg && client_count == 0) { |
| 832 | solid_bg(1); |
| 833 | } |
| 834 | if ((ncache || ncache0) && client_count == 0) { |
| 835 | kde_no_animate(1); |
| 836 | } |
| 837 | if (client->clientData) { |
| 838 | cd = (ClientData *) client->clientData; |
| 839 | if (cd->ssl_helper_pid > 0) { |
| 840 | int status; |
| 841 | rfbLog("sending SIGTERM to ssl_helper_pid: %d\n", |
| 842 | cd->ssl_helper_pid); |
| 843 | kill(cd->ssl_helper_pid, SIGTERM); |
| 844 | usleep(200*1000); |
| 845 | #if LIBVNCSERVER_HAVE_SYS_WAIT_H && LIBVNCSERVER_HAVE_WAITPID |
| 846 | waitpid(cd->ssl_helper_pid, &status, WNOHANG); |
| 847 | #endif |
| 848 | ssl_helper_pid(cd->ssl_helper_pid, -1); /* delete */ |
| 849 | } |
| 850 | } |
| 851 | if (gone_cmd && *gone_cmd != '\0') { |
| 852 | if (strstr(gone_cmd, "popup") == gone_cmd) { |
| 853 | int x = -64000, y = -64000, timeout = 120; |
| 854 | char *userhost = ident_username(client); |
| 855 | char *addr, *p, *mode; |
| 856 | |
| 857 | /* extract timeout */ |
| 858 | if ((p = strchr(gone_cmd, ':')) != NULL) { |
| 859 | int in; |
| 860 | if (sscanf(p+1, "%d", &in) == 1) { |
| 861 | timeout = in; |
| 862 | } |
| 863 | } |
| 864 | /* extract geometry */ |
| 865 | if ((p = strpbrk(gone_cmd, "+-")) != NULL) { |
| 866 | ugly_geom(p, &x, &y); |
| 867 | } |
| 868 | |
| 869 | /* find mode: mouse, key, or both */ |
| 870 | if (strstr(gone_cmd, "popupmouse") == gone_cmd) { |
| 871 | mode = "mouse_only"; |
| 872 | } else if (strstr(gone_cmd, "popupkey") == gone_cmd) { |
| 873 | mode = "key_only"; |
| 874 | } else { |
| 875 | mode = "both"; |
| 876 | } |
| 877 | |
| 878 | addr = client->host; |
| 879 | |
| 880 | ugly_window(addr, userhost, x, y, timeout, mode, 0); |
| 881 | |
| 882 | free(userhost); |
| 883 | } else { |
| 884 | rfbLog("client_gone: using cmd: %s\n", client->host); |
| 885 | run_user_command(gone_cmd, client, "gone", NULL, 0, NULL); |
| 886 | } |
| 887 | } |
| 888 | |
| 889 | free_client_data(client); |
| 890 | |
| 891 | if (inetd && client == inetd_client) { |
| 892 | rfbLog("inetd viewer exited.\n"); |
| 893 | if (gui_pid > 0) { |
| 894 | rfbLog("killing gui_pid %d\n", gui_pid); |
| 895 | kill(gui_pid, SIGTERM); |
| 896 | } |
| 897 | clean_up_exit(0); |
| 898 | } |
| 899 | |
| 900 | if (connect_once) { |
| 901 | /* |
| 902 | * This non-exit is done for a bad passwd to be consistent |
| 903 | * with our RFB_CLIENT_REFUSE behavior in new_client() (i.e. |
| 904 | * we disconnect after 1 successful connection). |
| 905 | */ |
| 906 | if ((client->state == RFB_PROTOCOL_VERSION || |
| 907 | client->state == RFB_SECURITY_TYPE || |
| 908 | client->state == RFB_AUTHENTICATION || |
| 909 | client->state == RFB_INITIALISATION) && accepted_client) { |
| 910 | rfbLog("connect_once: invalid password or early " |
| 911 | "disconnect. %d\n", client->state); |
| 912 | rfbLog("connect_once: waiting for next connection.\n"); |
| 913 | accepted_client--; |
| 914 | if (accepted_client < 0) { |
| 915 | accepted_client = 0; |
| 916 | } |
| 917 | CLIENT_UNLOCK; |
| 918 | if (connect_or_exit) { |
| 919 | clean_up_exit(1); |
| 920 | } |
| 921 | return; |
| 922 | } |
| 923 | if (shared && client_count > 0) { |
| 924 | rfbLog("connect_once: other shared clients still " |
| 925 | "connected, not exiting.\n"); |
| 926 | CLIENT_UNLOCK; |
| 927 | return; |
| 928 | } |
| 929 | |
| 930 | rfbLog("viewer exited.\n"); |
| 931 | if ((client_connect || connect_or_exit) && gui_pid > 0) { |
| 932 | rfbLog("killing gui_pid %d\n", gui_pid); |
| 933 | kill(gui_pid, SIGTERM); |
| 934 | } |
| 935 | CLIENT_UNLOCK; |
| 936 | clean_up_exit(0); |
| 937 | } |
| 938 | #ifdef MACOSX |
| 939 | if (macosx_console && client_count == 0) { |
| 940 | macosxCG_refresh_callback_off(); |
| 941 | } |
| 942 | #endif |
| 943 | CLIENT_UNLOCK; |
| 944 | } |
| 945 | |
| 946 | /* |
| 947 | * Simple routine to limit access via string compare. A power user will |
| 948 | * want to compile libvncserver with libwrap support and use /etc/hosts.allow. |
| 949 | */ |
| 950 | int check_access(char *addr) { |
| 951 | int allowed = 0; |
| 952 | int ssl = 0; |
| 953 | char *p, *list; |
| 954 | |
| 955 | if (use_openssl || use_stunnel) { |
| 956 | ssl = 1; |
| 957 | } |
| 958 | if (deny_all) { |
| 959 | rfbLog("check_access: new connections are currently " |
| 960 | "blocked.\n"); |
| 961 | return 0; |
| 962 | } |
| 963 | if (addr == NULL || *addr == '\0') { |
| 964 | rfbLog("check_access: denying empty host IP address string.\n"); |
| 965 | return 0; |
| 966 | } |
| 967 | |
| 968 | if (allow_list == NULL) { |
| 969 | /* set to "" to possibly append allow_once */ |
| 970 | allow_list = strdup(""); |
| 971 | } |
| 972 | if (*allow_list == '\0' && allow_once == NULL) { |
| 973 | /* no constraints, accept it */ |
| 974 | return 1; |
| 975 | } |
| 976 | |
| 977 | if (strchr(allow_list, '/')) { |
| 978 | /* a file of IP addresess or prefixes */ |
| 979 | int len, len2 = 0; |
| 980 | struct stat sbuf; |
| 981 | FILE *in; |
| 982 | char line[1024], *q; |
| 983 | |
| 984 | if (stat(allow_list, &sbuf) != 0) { |
| 985 | rfbLogEnable(1); |
| 986 | rfbLog("check_access: failure stating file: %s\n", |
| 987 | allow_list); |
| 988 | rfbLogPerror("stat"); |
| 989 | clean_up_exit(1); |
| 990 | } |
| 991 | len = sbuf.st_size + 1; /* 1 more for '\0' at end */ |
| 992 | if (allow_once) { |
| 993 | len2 = strlen(allow_once) + 2; |
| 994 | len += len2; |
| 995 | } |
| 996 | if (ssl) { |
| 997 | len2 = strlen("127.0.0.1") + 2; |
| 998 | len += len2; |
| 999 | } |
| 1000 | list = (char *) malloc(len); |
| 1001 | list[0] = '\0'; |
| 1002 | |
| 1003 | in = fopen(allow_list, "r"); |
| 1004 | if (in == NULL) { |
| 1005 | rfbLogEnable(1); |
| 1006 | rfbLog("check_access: cannot open: %s\n", allow_list); |
| 1007 | rfbLogPerror("fopen"); |
| 1008 | clean_up_exit(1); |
| 1009 | } |
| 1010 | while (fgets(line, 1024, in) != NULL) { |
| 1011 | if ( (q = strchr(line, '#')) != NULL) { |
| 1012 | *q = '\0'; |
| 1013 | } |
| 1014 | if (strlen(list) + strlen(line) >= |
| 1015 | (size_t) (len - len2)) { |
| 1016 | /* file grew since our stat() */ |
| 1017 | break; |
| 1018 | } |
| 1019 | strcat(list, line); |
| 1020 | } |
| 1021 | fclose(in); |
| 1022 | if (allow_once) { |
| 1023 | strcat(list, "\n"); |
| 1024 | strcat(list, allow_once); |
| 1025 | strcat(list, "\n"); |
| 1026 | } |
| 1027 | if (ssl) { |
| 1028 | strcat(list, "\n"); |
| 1029 | strcat(list, "127.0.0.1"); |
| 1030 | strcat(list, "\n"); |
| 1031 | } |
| 1032 | } else { |
| 1033 | int len = strlen(allow_list) + 1; |
| 1034 | if (allow_once) { |
| 1035 | len += strlen(allow_once) + 1; |
| 1036 | } |
| 1037 | if (ssl) { |
| 1038 | len += strlen("127.0.0.1") + 1; |
| 1039 | } |
| 1040 | list = (char *) malloc(len); |
| 1041 | list[0] = '\0'; |
| 1042 | strcat(list, allow_list); |
| 1043 | if (allow_once) { |
| 1044 | strcat(list, ","); |
| 1045 | strcat(list, allow_once); |
| 1046 | } |
| 1047 | if (ssl) { |
| 1048 | strcat(list, ","); |
| 1049 | strcat(list, "127.0.0.1"); |
| 1050 | } |
| 1051 | } |
| 1052 | |
| 1053 | if (allow_once) { |
| 1054 | free(allow_once); |
| 1055 | allow_once = NULL; |
| 1056 | } |
| 1057 | |
| 1058 | p = strtok(list, ", \t\n\r"); |
| 1059 | while (p) { |
| 1060 | char *chk, *q, *r = NULL; |
| 1061 | if (*p == '\0') { |
| 1062 | p = strtok(NULL, ", \t\n\r"); |
| 1063 | continue; |
| 1064 | } |
| 1065 | if (ipv6_ip(p)) { |
| 1066 | chk = p; |
| 1067 | } else if (! dotted_ip(p, 1)) { |
| 1068 | r = host2ip(p); |
| 1069 | if (r == NULL || *r == '\0') { |
| 1070 | rfbLog("check_access: bad lookup \"%s\"\n", p); |
| 1071 | p = strtok(NULL, ", \t\n\r"); |
| 1072 | continue; |
| 1073 | } |
| 1074 | rfbLog("check_access: lookup %s -> %s\n", p, r); |
| 1075 | chk = r; |
| 1076 | } else { |
| 1077 | chk = p; |
| 1078 | } |
| 1079 | if (getenv("X11VNC_DEBUG_ACCESS")) fprintf(stderr, "chk: %s part: %s addr: %s\n", chk, p, addr); |
| 1080 | |
| 1081 | q = strstr(addr, chk); |
| 1082 | if (ipv6_ip(addr)) { |
| 1083 | if (!strcmp(chk, "localhost") && !strcmp(addr, "::1")) { |
| 1084 | rfbLog("check_access: client addr %s is local.\n", addr); |
| 1085 | allowed = 1; |
| 1086 | } else if (!strcmp(chk, "::1") && !strcmp(addr, "::1")) { |
| 1087 | rfbLog("check_access: client addr %s is local.\n", addr); |
| 1088 | allowed = 1; |
| 1089 | } else if (!strcmp(chk, "127.0.0.1") && !strcmp(addr, "::1")) { |
| 1090 | /* this if for host2ip("localhost") */ |
| 1091 | rfbLog("check_access: client addr %s is local.\n", addr); |
| 1092 | allowed = 1; |
| 1093 | } else if (q == addr) { |
| 1094 | rfbLog("check_access: client %s matches pattern %s\n", addr, chk); |
| 1095 | allowed = 1; |
| 1096 | } |
| 1097 | } else if (chk[strlen(chk)-1] != '.') { |
| 1098 | if (!strcmp(addr, chk)) { |
| 1099 | if (chk != p) { |
| 1100 | rfbLog("check_access: client %s " "matches host %s=%s\n", addr, chk, p); |
| 1101 | } else { |
| 1102 | rfbLog("check_access: client %s " "matches host %s\n", addr, chk); |
| 1103 | } |
| 1104 | allowed = 1; |
| 1105 | } else if(!strcmp(chk, "localhost") && !strcmp(addr, "127.0.0.1")) { |
| 1106 | allowed = 1; |
| 1107 | } |
| 1108 | } else if (q == addr) { |
| 1109 | rfbLog("check_access: client %s matches pattern %s\n", addr, chk); |
| 1110 | allowed = 1; |
| 1111 | } |
| 1112 | p = strtok(NULL, ", \t\n\r"); |
| 1113 | if (r) { |
| 1114 | free(r); |
| 1115 | } |
| 1116 | if (allowed) { |
| 1117 | break; |
| 1118 | } |
| 1119 | } |
| 1120 | free(list); |
| 1121 | return allowed; |
| 1122 | } |
| 1123 | |
| 1124 | /* |
| 1125 | * x11vnc's first (and only) visible widget: accept/reject dialog window. |
| 1126 | * We go through this pain to avoid dependency on libXt... |
| 1127 | */ |
| 1128 | static int ugly_window(char *addr, char *userhost, int X, int Y, |
| 1129 | int timeout, char *mode, int accept) { |
| 1130 | #if NO_X11 |
| 1131 | if (!addr || !userhost || !X || !Y || !timeout || !mode || !accept) {} |
| 1132 | RAWFB_RET(0) |
| 1133 | nox11_exit(1); |
| 1134 | return 0; |
| 1135 | #else |
| 1136 | |
| 1137 | #define t2x2_width 16 |
| 1138 | #define t2x2_height 16 |
| 1139 | static unsigned char t2x2_bits[] = { |
| 1140 | 0xff, 0xff, 0xff, 0xff, 0x33, 0x33, 0x33, 0x33, 0xff, 0xff, 0xff, 0xff, |
| 1141 | 0x33, 0x33, 0x33, 0x33, 0xff, 0xff, 0xff, 0xff, 0x33, 0x33, 0x33, 0x33, |
| 1142 | 0xff, 0xff, 0xff, 0xff, 0x33, 0x33, 0x33, 0x33}; |
| 1143 | |
| 1144 | Window awin; |
| 1145 | GC gc; |
| 1146 | XSizeHints hints; |
| 1147 | XGCValues values; |
| 1148 | static XFontStruct *font_info = NULL; |
| 1149 | static Pixmap ico = 0; |
| 1150 | unsigned long valuemask = 0; |
| 1151 | static char dash_list[] = {20, 40}; |
| 1152 | int list_length = sizeof(dash_list); |
| 1153 | |
| 1154 | Atom wm_protocols; |
| 1155 | Atom wm_delete_window; |
| 1156 | |
| 1157 | XEvent ev; |
| 1158 | long evmask = ExposureMask | KeyPressMask | ButtonPressMask |
| 1159 | | StructureNotifyMask; |
| 1160 | double waited = 0.0; |
| 1161 | |
| 1162 | /* strings and geometries y/n */ |
| 1163 | KeyCode key_y, key_n, key_v; |
| 1164 | char strh[100]; |
| 1165 | char stri[100]; |
| 1166 | char str1_b[] = "To accept: press \"y\" or click the \"Yes\" button"; |
| 1167 | char str2_b[] = "To reject: press \"n\" or click the \"No\" button"; |
| 1168 | char str3_b[] = "View only: press \"v\" or click the \"View\" button"; |
| 1169 | char str1_m[] = "To accept: click the \"Yes\" button"; |
| 1170 | char str2_m[] = "To reject: click the \"No\" button"; |
| 1171 | char str3_m[] = "View only: click the \"View\" button"; |
| 1172 | char str1_k[] = "To accept: press \"y\""; |
| 1173 | char str2_k[] = "To reject: press \"n\""; |
| 1174 | char str3_k[] = "View only: press \"v\""; |
| 1175 | char *str1, *str2, *str3; |
| 1176 | char str_y[] = "Yes"; |
| 1177 | char str_n[] = "No"; |
| 1178 | char str_v[] = "View"; |
| 1179 | int x, y, w = 345, h = 175, ret = 0; |
| 1180 | int X_sh = 20, Y_sh = 30, dY = 20; |
| 1181 | int Ye_x = 20, Ye_y = 0, Ye_w = 45, Ye_h = 20; |
| 1182 | int No_x = 75, No_y = 0, No_w = 45, No_h = 20; |
| 1183 | int Vi_x = 130, Vi_y = 0, Vi_w = 45, Vi_h = 20; |
| 1184 | char *sprop = "new x11vnc client"; |
| 1185 | |
| 1186 | KeyCode key_o; |
| 1187 | |
| 1188 | RAWFB_RET(0) |
| 1189 | |
| 1190 | if (! accept) { |
| 1191 | sprintf(str_y, "OK"); |
| 1192 | sprop = "x11vnc client disconnected"; |
| 1193 | h = 110; |
| 1194 | str1 = ""; |
| 1195 | str2 = ""; |
| 1196 | str3 = ""; |
| 1197 | } else if (!strcmp(mode, "mouse_only")) { |
| 1198 | str1 = str1_m; |
| 1199 | str2 = str2_m; |
| 1200 | str3 = str3_m; |
| 1201 | } else if (!strcmp(mode, "key_only")) { |
| 1202 | str1 = str1_k; |
| 1203 | str2 = str2_k; |
| 1204 | str3 = str3_k; |
| 1205 | h -= dY; |
| 1206 | } else { |
| 1207 | str1 = str1_b; |
| 1208 | str2 = str2_b; |
| 1209 | str3 = str3_b; |
| 1210 | } |
| 1211 | if (view_only) { |
| 1212 | h -= dY; |
| 1213 | } |
| 1214 | |
| 1215 | /* XXX handle coff_x/coff_y? */ |
| 1216 | if (X < -dpy_x) { |
| 1217 | x = (dpy_x - w)/2; /* large negative: center */ |
| 1218 | if (x < 0) x = 0; |
| 1219 | } else if (X < 0) { |
| 1220 | x = dpy_x + X - w; /* from lower right */ |
| 1221 | } else { |
| 1222 | x = X; /* from upper left */ |
| 1223 | } |
| 1224 | |
| 1225 | if (Y < -dpy_y) { |
| 1226 | y = (dpy_y - h)/2; |
| 1227 | if (y < 0) y = 0; |
| 1228 | } else if (Y < 0) { |
| 1229 | y = dpy_y + Y - h; |
| 1230 | } else { |
| 1231 | y = Y; |
| 1232 | } |
| 1233 | |
| 1234 | X_LOCK; |
| 1235 | |
| 1236 | awin = XCreateSimpleWindow(dpy, window, x, y, w, h, 4, |
| 1237 | BlackPixel(dpy, scr), WhitePixel(dpy, scr)); |
| 1238 | |
| 1239 | wm_protocols = XInternAtom(dpy, "WM_PROTOCOLS", False); |
| 1240 | wm_delete_window = XInternAtom(dpy, "WM_DELETE_WINDOW", False); |
| 1241 | XSetWMProtocols(dpy, awin, &wm_delete_window, 1); |
| 1242 | |
| 1243 | if (! ico) { |
| 1244 | ico = XCreateBitmapFromData(dpy, awin, (char *) t2x2_bits, |
| 1245 | t2x2_width, t2x2_height); |
| 1246 | } |
| 1247 | |
| 1248 | hints.flags = PPosition | PSize | PMinSize; |
| 1249 | hints.x = x; |
| 1250 | hints.y = y; |
| 1251 | hints.width = w; |
| 1252 | hints.height = h; |
| 1253 | hints.min_width = w; |
| 1254 | hints.min_height = h; |
| 1255 | |
| 1256 | XSetStandardProperties(dpy, awin, sprop, "x11vnc query", ico, NULL, |
| 1257 | 0, &hints); |
| 1258 | |
| 1259 | XSelectInput_wr(dpy, awin, evmask); |
| 1260 | |
| 1261 | if (! font_info && (font_info = XLoadQueryFont(dpy, "fixed")) == NULL) { |
| 1262 | rfbLogEnable(1); |
| 1263 | rfbLog("ugly_window: cannot locate font fixed.\n"); |
| 1264 | X_UNLOCK; |
| 1265 | clean_up_exit(1); |
| 1266 | } |
| 1267 | |
| 1268 | gc = XCreateGC(dpy, awin, valuemask, &values); |
| 1269 | XSetFont(dpy, gc, font_info->fid); |
| 1270 | XSetForeground(dpy, gc, BlackPixel(dpy, scr)); |
| 1271 | XSetLineAttributes(dpy, gc, 1, LineSolid, CapButt, JoinMiter); |
| 1272 | XSetDashes(dpy, gc, 0, dash_list, list_length); |
| 1273 | |
| 1274 | XMapWindow(dpy, awin); |
| 1275 | XFlush_wr(dpy); |
| 1276 | |
| 1277 | if (accept) { |
| 1278 | char *ip = addr; |
| 1279 | char *type = "accept"; |
| 1280 | if (unixpw && strstr(userhost, "UNIX:") != userhost) { |
| 1281 | type = "UNIXPW"; |
| 1282 | if (openssl_last_ip) { |
| 1283 | ip = openssl_last_ip; |
| 1284 | } |
| 1285 | } |
| 1286 | snprintf(strh, 100, "x11vnc: %s connection from %s?", type, ip); |
| 1287 | } else { |
| 1288 | snprintf(strh, 100, "x11vnc: client disconnected from %s", addr); |
| 1289 | } |
| 1290 | snprintf(stri, 100, " (%s)", userhost); |
| 1291 | |
| 1292 | key_o = XKeysymToKeycode(dpy, XStringToKeysym("o")); |
| 1293 | key_y = XKeysymToKeycode(dpy, XStringToKeysym("y")); |
| 1294 | key_n = XKeysymToKeycode(dpy, XStringToKeysym("n")); |
| 1295 | key_v = XKeysymToKeycode(dpy, XStringToKeysym("v")); |
| 1296 | |
| 1297 | while (1) { |
| 1298 | int out = -1, x, y, tw, k; |
| 1299 | |
| 1300 | if (XCheckWindowEvent(dpy, awin, evmask, &ev)) { |
| 1301 | ; /* proceed to handling */ |
| 1302 | } else if (XCheckTypedEvent(dpy, ClientMessage, &ev)) { |
| 1303 | ; /* proceed to handling */ |
| 1304 | } else { |
| 1305 | int ms = 100; /* sleep a bit */ |
| 1306 | usleep(ms * 1000); |
| 1307 | waited += ((double) ms)/1000.; |
| 1308 | if (timeout && (int) waited >= timeout) { |
| 1309 | rfbLog("ugly_window: popup timed out after " |
| 1310 | "%d seconds.\n", timeout); |
| 1311 | out = 0; |
| 1312 | ev.type = 0; |
| 1313 | } else { |
| 1314 | continue; |
| 1315 | } |
| 1316 | } |
| 1317 | |
| 1318 | switch(ev.type) { |
| 1319 | case Expose: |
| 1320 | while (XCheckTypedEvent(dpy, Expose, &ev)) { |
| 1321 | ; |
| 1322 | } |
| 1323 | k=0; |
| 1324 | |
| 1325 | /* instructions */ |
| 1326 | XDrawString(dpy, awin, gc, X_sh, Y_sh+(k++)*dY, |
| 1327 | strh, strlen(strh)); |
| 1328 | XDrawString(dpy, awin, gc, X_sh, Y_sh+(k++)*dY, |
| 1329 | stri, strlen(stri)); |
| 1330 | if (accept) { |
| 1331 | XDrawString(dpy, awin, gc, X_sh, Y_sh+(k++)*dY, |
| 1332 | str1, strlen(str1)); |
| 1333 | XDrawString(dpy, awin, gc, X_sh, Y_sh+(k++)*dY, |
| 1334 | str2, strlen(str2)); |
| 1335 | if (! view_only) { |
| 1336 | XDrawString(dpy, awin, gc, X_sh, Y_sh+(k++)*dY, |
| 1337 | str3, strlen(str3)); |
| 1338 | } |
| 1339 | } |
| 1340 | |
| 1341 | if (!strcmp(mode, "key_only")) { |
| 1342 | break; |
| 1343 | } |
| 1344 | |
| 1345 | /* buttons */ |
| 1346 | Ye_y = Y_sh+k*dY; |
| 1347 | No_y = Y_sh+k*dY; |
| 1348 | Vi_y = Y_sh+k*dY; |
| 1349 | XDrawRectangle(dpy, awin, gc, Ye_x, Ye_y, Ye_w, Ye_h); |
| 1350 | |
| 1351 | if (accept) { |
| 1352 | XDrawRectangle(dpy, awin, gc, No_x, No_y, No_w, No_h); |
| 1353 | if (! view_only) { |
| 1354 | XDrawRectangle(dpy, awin, gc, Vi_x, Vi_y, |
| 1355 | Vi_w, Vi_h); |
| 1356 | } |
| 1357 | } |
| 1358 | |
| 1359 | tw = XTextWidth(font_info, str_y, strlen(str_y)); |
| 1360 | tw = (Ye_w - tw)/2; |
| 1361 | if (tw < 0) tw = 1; |
| 1362 | XDrawString(dpy, awin, gc, Ye_x+tw, Ye_y+Ye_h-5, |
| 1363 | str_y, strlen(str_y)); |
| 1364 | |
| 1365 | if (!accept) { |
| 1366 | break; |
| 1367 | } |
| 1368 | tw = XTextWidth(font_info, str_n, strlen(str_n)); |
| 1369 | tw = (No_w - tw)/2; |
| 1370 | if (tw < 0) tw = 1; |
| 1371 | XDrawString(dpy, awin, gc, No_x+tw, No_y+No_h-5, |
| 1372 | str_n, strlen(str_n)); |
| 1373 | |
| 1374 | if (! view_only) { |
| 1375 | tw = XTextWidth(font_info, str_v, |
| 1376 | strlen(str_v)); |
| 1377 | tw = (Vi_w - tw)/2; |
| 1378 | if (tw < 0) tw = 1; |
| 1379 | XDrawString(dpy, awin, gc, Vi_x+tw, |
| 1380 | Vi_y+Vi_h-5, str_v, strlen(str_v)); |
| 1381 | } |
| 1382 | |
| 1383 | break; |
| 1384 | |
| 1385 | case ClientMessage: |
| 1386 | if (ev.xclient.message_type == wm_protocols && |
| 1387 | (Atom) ev.xclient.data.l[0] == wm_delete_window) { |
| 1388 | out = 0; |
| 1389 | } |
| 1390 | break; |
| 1391 | |
| 1392 | case ButtonPress: |
| 1393 | x = ev.xbutton.x; |
| 1394 | y = ev.xbutton.y; |
| 1395 | if (!strcmp(mode, "key_only")) { |
| 1396 | ; |
| 1397 | } else if (x > Ye_x && x < Ye_x+Ye_w && y > Ye_y |
| 1398 | && y < Ye_y+Ye_h) { |
| 1399 | out = 1; |
| 1400 | } else if (! accept) { |
| 1401 | ; |
| 1402 | } else if (x > No_x && x < No_x+No_w && y > No_y |
| 1403 | && y < No_y+No_h) { |
| 1404 | out = 0; |
| 1405 | } else if (! view_only && x > Vi_x && x < Vi_x+Vi_w |
| 1406 | && y > Vi_y && y < Vi_y+Ye_h) { |
| 1407 | out = 2; |
| 1408 | } |
| 1409 | break; |
| 1410 | |
| 1411 | case KeyPress: |
| 1412 | if (!strcmp(mode, "mouse_only")) { |
| 1413 | ; |
| 1414 | } else if (! accept) { |
| 1415 | if (ev.xkey.keycode == key_o) { |
| 1416 | out = 1; |
| 1417 | } |
| 1418 | if (ev.xkey.keycode == key_y) { |
| 1419 | out = 1; |
| 1420 | } |
| 1421 | } else if (ev.xkey.keycode == key_y) { |
| 1422 | out = 1; |
| 1423 | ; |
| 1424 | } else if (ev.xkey.keycode == key_n) { |
| 1425 | out = 0; |
| 1426 | } else if (! view_only && ev.xkey.keycode == key_v) { |
| 1427 | out = 2; |
| 1428 | } |
| 1429 | break; |
| 1430 | default: |
| 1431 | break; |
| 1432 | } |
| 1433 | if (out != -1) { |
| 1434 | ret = out; |
| 1435 | XSelectInput_wr(dpy, awin, 0); |
| 1436 | XUnmapWindow(dpy, awin); |
| 1437 | XFree_wr(gc); |
| 1438 | XDestroyWindow(dpy, awin); |
| 1439 | XFlush_wr(dpy); |
| 1440 | break; |
| 1441 | } |
| 1442 | } |
| 1443 | X_UNLOCK; |
| 1444 | |
| 1445 | return ret; |
| 1446 | #endif /* NO_X11 */ |
| 1447 | } |
| 1448 | |
| 1449 | /* |
| 1450 | * process a "yes:0,no:*,view:3" type action list comparing to command |
| 1451 | * return code rc. * means the default action with no other match. |
| 1452 | */ |
| 1453 | static int action_match(char *action, int rc) { |
| 1454 | char *p, *q, *s = strdup(action); |
| 1455 | int cases[4], i, result; |
| 1456 | char *labels[4]; |
| 1457 | |
| 1458 | labels[1] = "yes"; |
| 1459 | labels[2] = "no"; |
| 1460 | labels[3] = "view"; |
| 1461 | |
| 1462 | rfbLog("accept_client: process action line: %s\n", |
| 1463 | action); |
| 1464 | |
| 1465 | for (i=1; i <= 3; i++) { |
| 1466 | cases[i] = -2; |
| 1467 | } |
| 1468 | |
| 1469 | p = strtok(s, ","); |
| 1470 | while (p) { |
| 1471 | if ((q = strchr(p, ':')) != NULL) { |
| 1472 | int in, k = 1; |
| 1473 | *q = '\0'; |
| 1474 | q++; |
| 1475 | if (strstr(p, "yes") == p) { |
| 1476 | k = 1; |
| 1477 | } else if (strstr(p, "no") == p) { |
| 1478 | k = 2; |
| 1479 | } else if (strstr(p, "view") == p) { |
| 1480 | k = 3; |
| 1481 | } else { |
| 1482 | rfbLogEnable(1); |
| 1483 | rfbLog("invalid action line: %s\n", action); |
| 1484 | clean_up_exit(1); |
| 1485 | } |
| 1486 | if (*q == '*') { |
| 1487 | cases[k] = -1; |
| 1488 | } else if (sscanf(q, "%d", &in) == 1) { |
| 1489 | if (in < 0) { |
| 1490 | rfbLogEnable(1); |
| 1491 | rfbLog("invalid action line: %s\n", |
| 1492 | action); |
| 1493 | clean_up_exit(1); |
| 1494 | } |
| 1495 | cases[k] = in; |
| 1496 | } else { |
| 1497 | rfbLogEnable(1); |
| 1498 | rfbLog("invalid action line: %s\n", action); |
| 1499 | clean_up_exit(1); |
| 1500 | } |
| 1501 | } else { |
| 1502 | rfbLogEnable(1); |
| 1503 | rfbLog("invalid action line: %s\n", action); |
| 1504 | clean_up_exit(1); |
| 1505 | } |
| 1506 | p = strtok(NULL, ","); |
| 1507 | } |
| 1508 | free(s); |
| 1509 | |
| 1510 | result = -1; |
| 1511 | for (i=1; i <= 3; i++) { |
| 1512 | if (cases[i] == -1) { |
| 1513 | rfbLog("accept_client: default action is case=%d %s\n", |
| 1514 | i, labels[i]); |
| 1515 | result = i; |
| 1516 | break; |
| 1517 | } |
| 1518 | } |
| 1519 | if (result == -1) { |
| 1520 | rfbLog("accept_client: no default action\n"); |
| 1521 | } |
| 1522 | for (i=1; i <= 3; i++) { |
| 1523 | if (cases[i] >= 0 && cases[i] == rc) { |
| 1524 | rfbLog("accept_client: matched action is case=%d %s\n", |
| 1525 | i, labels[i]); |
| 1526 | result = i; |
| 1527 | break; |
| 1528 | } |
| 1529 | } |
| 1530 | if (result < 0) { |
| 1531 | rfbLog("no action match: %s rc=%d set to no\n", action, rc); |
| 1532 | result = 2; |
| 1533 | } |
| 1534 | return result; |
| 1535 | } |
| 1536 | |
| 1537 | static void ugly_geom(char *p, int *x, int *y) { |
| 1538 | int x1, y1; |
| 1539 | |
| 1540 | if (sscanf(p, "+%d+%d", &x1, &y1) == 2) { |
| 1541 | *x = x1; |
| 1542 | *y = y1; |
| 1543 | } else if (sscanf(p, "+%d-%d", &x1, &y1) == 2) { |
| 1544 | *x = x1; |
| 1545 | *y = -y1; |
| 1546 | } else if (sscanf(p, "-%d+%d", &x1, &y1) == 2) { |
| 1547 | *x = -x1; |
| 1548 | *y = y1; |
| 1549 | } else if (sscanf(p, "-%d-%d", &x1, &y1) == 2) { |
| 1550 | *x = -x1; |
| 1551 | *y = -y1; |
| 1552 | } |
| 1553 | } |
| 1554 | |
| 1555 | /* |
| 1556 | * Simple routine to prompt the user on the X display whether an incoming |
| 1557 | * client should be allowed to connect or not. If a gui is involved it |
| 1558 | * will be running in the environment/context of the X11 DISPLAY. |
| 1559 | * |
| 1560 | * The command supplied via -accept is run as is (i.e. no string |
| 1561 | * substitution) with the RFB_CLIENT_IP environment variable set to the |
| 1562 | * incoming client's numerical IP address. |
| 1563 | * |
| 1564 | * If the external command exits with 0 the client is accepted, otherwise |
| 1565 | * the client is rejected. |
| 1566 | * |
| 1567 | * Some builtins are provided: |
| 1568 | * |
| 1569 | * xmessage: use homebrew xmessage(1) for the external command. |
| 1570 | * popup: use internal X widgets for prompting. |
| 1571 | * |
| 1572 | */ |
| 1573 | int accept_client(rfbClientPtr client) { |
| 1574 | |
| 1575 | char xmessage[200], *cmd = NULL; |
| 1576 | char *addr = client->host; |
| 1577 | char *action = NULL; |
| 1578 | |
| 1579 | if (accept_cmd == NULL || *accept_cmd == '\0') { |
| 1580 | return 1; /* no command specified, so we accept */ |
| 1581 | } |
| 1582 | |
| 1583 | if (addr == NULL || addr[0] == '\0') { |
| 1584 | addr = "unknown-host"; |
| 1585 | } |
| 1586 | |
| 1587 | if (strstr(accept_cmd, "popup") == accept_cmd) { |
| 1588 | /* use our builtin popup button */ |
| 1589 | |
| 1590 | /* (popup|popupkey|popupmouse)[+-X+-Y][:timeout] */ |
| 1591 | |
| 1592 | int ret, timeout = 120; |
| 1593 | int x = -64000, y = -64000; |
| 1594 | char *p, *mode; |
| 1595 | char *userhost = ident_username(client); |
| 1596 | |
| 1597 | /* extract timeout */ |
| 1598 | if ((p = strchr(accept_cmd, ':')) != NULL) { |
| 1599 | int in; |
| 1600 | if (sscanf(p+1, "%d", &in) == 1) { |
| 1601 | timeout = in; |
| 1602 | } |
| 1603 | } |
| 1604 | /* extract geometry */ |
| 1605 | if ((p = strpbrk(accept_cmd, "+-")) != NULL) { |
| 1606 | ugly_geom(p, &x, &y); |
| 1607 | } |
| 1608 | |
| 1609 | /* find mode: mouse, key, or both */ |
| 1610 | if (strstr(accept_cmd, "popupmouse") == accept_cmd) { |
| 1611 | mode = "mouse_only"; |
| 1612 | } else if (strstr(accept_cmd, "popupkey") == accept_cmd) { |
| 1613 | mode = "key_only"; |
| 1614 | } else { |
| 1615 | mode = "both"; |
| 1616 | } |
| 1617 | |
| 1618 | if (dpy == NULL && use_dpy && strstr(use_dpy, "WAIT:") == |
| 1619 | use_dpy) { |
| 1620 | rfbLog("accept_client: warning allowing client under conditions:\n"); |
| 1621 | rfbLog(" -display WAIT:, dpy == NULL, -accept popup.\n"); |
| 1622 | rfbLog(" There will be another popup.\n"); |
| 1623 | return 1; |
| 1624 | } |
| 1625 | |
| 1626 | rfbLog("accept_client: using builtin popup for: %s\n", addr); |
| 1627 | if ((ret = ugly_window(addr, userhost, x, y, timeout, |
| 1628 | mode, 1))) { |
| 1629 | free(userhost); |
| 1630 | if (ret == 2) { |
| 1631 | rfbLog("accept_client: viewonly: %s\n", addr); |
| 1632 | client->viewOnly = TRUE; |
| 1633 | } |
| 1634 | rfbLog("accept_client: popup accepted: %s\n", addr); |
| 1635 | return 1; |
| 1636 | } else { |
| 1637 | free(userhost); |
| 1638 | rfbLog("accept_client: popup rejected: %s\n", addr); |
| 1639 | return 0; |
| 1640 | } |
| 1641 | |
| 1642 | } else if (!strcmp(accept_cmd, "xmessage")) { |
| 1643 | /* make our own command using xmessage(1) */ |
| 1644 | |
| 1645 | if (view_only) { |
| 1646 | sprintf(xmessage, "xmessage -buttons yes:0,no:2 -center" |
| 1647 | " 'x11vnc: accept connection from %s?'", addr); |
| 1648 | } else { |
| 1649 | sprintf(xmessage, "xmessage -buttons yes:0,no:2," |
| 1650 | "view-only:3 -center" " 'x11vnc: accept connection" |
| 1651 | " from %s?'", addr); |
| 1652 | action = "yes:0,no:*,view:3"; |
| 1653 | } |
| 1654 | cmd = xmessage; |
| 1655 | |
| 1656 | } else { |
| 1657 | /* use the user supplied command: */ |
| 1658 | |
| 1659 | cmd = accept_cmd; |
| 1660 | |
| 1661 | /* extract any action prefix: yes:N,no:M,view:K */ |
| 1662 | if (strstr(accept_cmd, "yes:") == accept_cmd) { |
| 1663 | char *p; |
| 1664 | if ((p = strpbrk(accept_cmd, " \t")) != NULL) { |
| 1665 | int i; |
| 1666 | cmd = p; |
| 1667 | p = accept_cmd; |
| 1668 | for (i=0; i<200; i++) { |
| 1669 | if (*p == ' ' || *p == '\t') { |
| 1670 | xmessage[i] = '\0'; |
| 1671 | break; |
| 1672 | } |
| 1673 | xmessage[i] = *p; |
| 1674 | p++; |
| 1675 | } |
| 1676 | xmessage[200-1] = '\0'; |
| 1677 | action = xmessage; |
| 1678 | } |
| 1679 | } |
| 1680 | } |
| 1681 | |
| 1682 | if (cmd) { |
| 1683 | int rc; |
| 1684 | |
| 1685 | rfbLog("accept_client: using cmd for: %s\n", addr); |
| 1686 | rc = run_user_command(cmd, client, "accept", NULL, 0, NULL); |
| 1687 | |
| 1688 | if (action) { |
| 1689 | int result; |
| 1690 | |
| 1691 | if (rc < 0) { |
| 1692 | rfbLog("accept_client: cannot use negative " |
| 1693 | "rc: %d, action %s\n", rc, action); |
| 1694 | result = 2; |
| 1695 | } else { |
| 1696 | result = action_match(action, rc); |
| 1697 | } |
| 1698 | |
| 1699 | if (result == 1) { |
| 1700 | rc = 0; |
| 1701 | } else if (result == 2) { |
| 1702 | rc = 1; |
| 1703 | } else if (result == 3) { |
| 1704 | rc = 0; |
| 1705 | rfbLog("accept_client: viewonly: %s\n", addr); |
| 1706 | client->viewOnly = TRUE; |
| 1707 | } else { |
| 1708 | rc = 1; /* NOTREACHED */ |
| 1709 | } |
| 1710 | } |
| 1711 | |
| 1712 | if (rc == 0) { |
| 1713 | rfbLog("accept_client: accepted: %s\n", addr); |
| 1714 | return 1; |
| 1715 | } else { |
| 1716 | rfbLog("accept_client: rejected: %s\n", addr); |
| 1717 | return 0; |
| 1718 | } |
| 1719 | } else { |
| 1720 | rfbLog("accept_client: no command, rejecting %s\n", addr); |
| 1721 | return 0; |
| 1722 | } |
| 1723 | |
| 1724 | /* return 0; NOTREACHED */ |
| 1725 | } |
| 1726 | |
| 1727 | void check_ipv6_listen(long usec) { |
| 1728 | #if X11VNC_IPV6 |
| 1729 | fd_set fds; |
| 1730 | struct timeval tv; |
| 1731 | int nfds, csock = -1, one = 1; |
| 1732 | struct sockaddr_in6 addr; |
| 1733 | socklen_t addrlen = sizeof(addr); |
| 1734 | rfbClientPtr cl; |
| 1735 | int nmax = 0; |
| 1736 | char *name; |
| 1737 | |
| 1738 | if (!ipv6_listen || noipv6) { |
| 1739 | return; |
| 1740 | } |
| 1741 | if (ipv6_listen_fd < 0 && ipv6_http_fd < 0) { |
| 1742 | return; |
| 1743 | } |
| 1744 | |
| 1745 | FD_ZERO(&fds); |
| 1746 | if (ipv6_listen_fd >= 0) { |
| 1747 | FD_SET(ipv6_listen_fd, &fds); |
| 1748 | nmax = ipv6_listen_fd; |
| 1749 | } |
| 1750 | if (ipv6_http_fd >= 0 && screen->httpSock < 0) { |
| 1751 | FD_SET(ipv6_http_fd, &fds); |
| 1752 | if (ipv6_http_fd > nmax) { |
| 1753 | nmax = ipv6_http_fd; |
| 1754 | } |
| 1755 | } |
| 1756 | |
| 1757 | tv.tv_sec = 0; |
| 1758 | tv.tv_usec = 0; |
| 1759 | |
| 1760 | nfds = select(nmax+1, &fds, NULL, NULL, &tv); |
| 1761 | |
| 1762 | if (nfds <= 0) { |
| 1763 | return; |
| 1764 | } |
| 1765 | |
| 1766 | if (ipv6_listen_fd >= 0 && FD_ISSET(ipv6_listen_fd, &fds)) { |
| 1767 | |
| 1768 | csock = accept(ipv6_listen_fd, (struct sockaddr *)&addr, &addrlen); |
| 1769 | if (csock < 0) { |
| 1770 | rfbLogPerror("check_ipv6_listen: accept"); |
| 1771 | goto err1; |
| 1772 | } |
| 1773 | if (fcntl(csock, F_SETFL, O_NONBLOCK) < 0) { |
| 1774 | rfbLogPerror("check_ipv6_listen: fcntl"); |
| 1775 | close(csock); |
| 1776 | goto err1; |
| 1777 | } |
| 1778 | if (setsockopt(csock, IPPROTO_TCP, TCP_NODELAY, |
| 1779 | (char *)&one, sizeof(one)) < 0) { |
| 1780 | rfbLogPerror("check_ipv6_listen: setsockopt"); |
| 1781 | close(csock); |
| 1782 | goto err1; |
| 1783 | } |
| 1784 | |
| 1785 | name = ipv6_getipaddr((struct sockaddr *) &addr, addrlen); |
| 1786 | |
| 1787 | ipv6_client_ip_str = name; |
| 1788 | cl = rfbNewClient(screen, csock); |
| 1789 | ipv6_client_ip_str = NULL; |
| 1790 | if (cl == NULL) { |
| 1791 | close(csock); |
| 1792 | goto err1; |
| 1793 | } |
| 1794 | |
| 1795 | if (name) { |
| 1796 | if (cl->host) { |
| 1797 | free(cl->host); |
| 1798 | } |
| 1799 | cl->host = name; |
| 1800 | rfbLog("ipv6 client: %s\n", name); |
| 1801 | } |
| 1802 | } |
| 1803 | |
| 1804 | err1: |
| 1805 | |
| 1806 | if (ipv6_http_fd >= 0 && FD_ISSET(ipv6_http_fd, &fds)) { |
| 1807 | |
| 1808 | csock = accept(ipv6_http_fd, (struct sockaddr *)&addr, &addrlen); |
| 1809 | if (csock < 0) { |
| 1810 | rfbLogPerror("check_ipv6_listen: accept"); |
| 1811 | return; |
| 1812 | } |
| 1813 | if (fcntl(csock, F_SETFL, O_NONBLOCK) < 0) { |
| 1814 | rfbLogPerror("check_ipv6_listen: fcntl"); |
| 1815 | close(csock); |
| 1816 | return; |
| 1817 | } |
| 1818 | if (setsockopt(csock, IPPROTO_TCP, TCP_NODELAY, |
| 1819 | (char *)&one, sizeof(one)) < 0) { |
| 1820 | rfbLogPerror("check_ipv6_listen: setsockopt"); |
| 1821 | close(csock); |
| 1822 | return; |
| 1823 | } |
| 1824 | |
| 1825 | rfbLog("check_ipv6_listen: setting httpSock to %d\n", csock); |
| 1826 | screen->httpSock = csock; |
| 1827 | |
| 1828 | if (screen->httpListenSock < 0) { |
| 1829 | /* this may not always work... */ |
| 1830 | int save = screen->httpListenSock; |
| 1831 | screen->httpListenSock = ipv6_http_fd; |
| 1832 | rfbLog("check_ipv6_listen: no httpListenSock, calling rfbHttpCheckFds()\n"); |
| 1833 | rfbHttpCheckFds(screen); |
| 1834 | screen->httpListenSock = save; |
| 1835 | } |
| 1836 | } |
| 1837 | #endif |
| 1838 | if (usec) {} |
| 1839 | } |
| 1840 | |
| 1841 | void check_unix_sock(long usec) { |
| 1842 | fd_set fds; |
| 1843 | struct timeval tv; |
| 1844 | int nfds, csock = -1; |
| 1845 | rfbClientPtr cl; |
| 1846 | int nmax = 0; |
| 1847 | char *name; |
| 1848 | |
| 1849 | if (!unix_sock || unix_sock_fd < 0) { |
| 1850 | return; |
| 1851 | } |
| 1852 | |
| 1853 | FD_ZERO(&fds); |
| 1854 | if (unix_sock_fd >= 0) { |
| 1855 | FD_SET(unix_sock_fd, &fds); |
| 1856 | nmax = unix_sock_fd; |
| 1857 | } |
| 1858 | |
| 1859 | tv.tv_sec = 0; |
| 1860 | tv.tv_usec = 0; |
| 1861 | |
| 1862 | nfds = select(nmax+1, &fds, NULL, NULL, &tv); |
| 1863 | |
| 1864 | if (nfds <= 0) { |
| 1865 | return; |
| 1866 | } |
| 1867 | |
| 1868 | if (unix_sock_fd >= 0 && FD_ISSET(unix_sock_fd, &fds)) { |
| 1869 | csock = accept_unix(unix_sock_fd); |
| 1870 | if (csock < 0) { |
| 1871 | return; |
| 1872 | } |
| 1873 | if (fcntl(csock, F_SETFL, O_NONBLOCK) < 0) { |
| 1874 | rfbLogPerror("check_unix_sock: fcntl"); |
| 1875 | close(csock); |
| 1876 | return; |
| 1877 | } |
| 1878 | |
| 1879 | /* rfbNewClient() will screw us with setsockopt TCP_NODELAY... |
| 1880 | you need to comment out in libvncserver/rfbserver.c: |
| 1881 | rfbLogPerror("setsockopt failed"); |
| 1882 | close(sock); |
| 1883 | return NULL; |
| 1884 | */ |
| 1885 | cl = rfbNewClient(screen, csock); |
| 1886 | |
| 1887 | if (cl == NULL) { |
| 1888 | close(csock); |
| 1889 | return; |
| 1890 | } |
| 1891 | |
| 1892 | name = strdup(unix_sock); |
| 1893 | |
| 1894 | if (name) { |
| 1895 | if (cl->host) { |
| 1896 | free(cl->host); |
| 1897 | } |
| 1898 | cl->host = name; |
| 1899 | rfbLog("unix sock client: %s\n", name); |
| 1900 | } |
| 1901 | } |
| 1902 | } |
| 1903 | |
| 1904 | /* |
| 1905 | * For the -connect <file> option: periodically read the file looking for |
| 1906 | * a connect string. If one is found set client_connect to it. |
| 1907 | */ |
| 1908 | static void check_connect_file(char *file) { |
| 1909 | FILE *in; |
| 1910 | char line[VNC_CONNECT_MAX], host[VNC_CONNECT_MAX]; |
| 1911 | static int first_warn = 1, truncate_ok = 1; |
| 1912 | static double last_time = 0.0, delay = 0.5; |
| 1913 | double now = dnow(); |
| 1914 | struct stat sbuf; |
| 1915 | |
| 1916 | if (last_time == 0.0) { |
| 1917 | if (!getenv("X11VNC_APPSHARE_ACTIVE")) { |
| 1918 | /* skip first */ |
| 1919 | last_time = now; |
| 1920 | } else { |
| 1921 | delay = 0.25; |
| 1922 | } |
| 1923 | } |
| 1924 | if (now - last_time < delay) { |
| 1925 | /* check only about once a second */ |
| 1926 | return; |
| 1927 | } |
| 1928 | last_time = now; |
| 1929 | |
| 1930 | if (! truncate_ok) { |
| 1931 | /* check if permissions changed */ |
| 1932 | if (access(file, W_OK) == 0) { |
| 1933 | truncate_ok = 1; |
| 1934 | } else { |
| 1935 | return; |
| 1936 | } |
| 1937 | } |
| 1938 | |
| 1939 | if (stat(file, &sbuf) == 0) { |
| 1940 | /* skip empty file directly */ |
| 1941 | if (sbuf.st_size == 0) { |
| 1942 | return; |
| 1943 | } |
| 1944 | } |
| 1945 | |
| 1946 | in = fopen(file, "r"); |
| 1947 | if (in == NULL) { |
| 1948 | if (first_warn) { |
| 1949 | rfbLog("check_connect_file: fopen failure: %s\n", file); |
| 1950 | rfbLogPerror("fopen"); |
| 1951 | first_warn = 0; |
| 1952 | } |
| 1953 | return; |
| 1954 | } |
| 1955 | |
| 1956 | if (fgets(line, VNC_CONNECT_MAX, in) != NULL) { |
| 1957 | if (sscanf(line, "%s", host) == 1) { |
| 1958 | if (strlen(host) > 0) { |
| 1959 | char *str = strdup(host); |
| 1960 | if (strlen(str) > 38) { |
| 1961 | char trim[100]; |
| 1962 | trim[0] = '\0'; |
| 1963 | strncat(trim, str, 38); |
| 1964 | rfbLog("read connect file: %s ...\n", |
| 1965 | trim); |
| 1966 | } else { |
| 1967 | rfbLog("read connect file: %s\n", str); |
| 1968 | } |
| 1969 | if (!strcmp(str, "cmd=stop") && |
| 1970 | dnowx() < 3.0) { |
| 1971 | rfbLog("ignoring stale cmd=stop\n"); |
| 1972 | } else { |
| 1973 | client_connect = str; |
| 1974 | } |
| 1975 | } |
| 1976 | } |
| 1977 | } |
| 1978 | fclose(in); |
| 1979 | |
| 1980 | /* truncate file */ |
| 1981 | in = fopen(file, "w"); |
| 1982 | if (in != NULL) { |
| 1983 | fclose(in); |
| 1984 | } else { |
| 1985 | /* disable if we cannot truncate */ |
| 1986 | rfbLog("check_connect_file: could not truncate %s, " |
| 1987 | "disabling checking.\n", file); |
| 1988 | truncate_ok = 0; |
| 1989 | } |
| 1990 | } |
| 1991 | |
| 1992 | static int socks5_proxy(char *host, int port, int sock) { |
| 1993 | unsigned char buf[512], tmp[2]; |
| 1994 | char reply[512]; |
| 1995 | int len, n, i, j = 0; |
| 1996 | |
| 1997 | memset(buf, 0, 512); |
| 1998 | memset(reply, 0, 512); |
| 1999 | |
| 2000 | buf[0] = 0x5; |
| 2001 | buf[1] = 0x1; |
| 2002 | buf[2] = 0x0; |
| 2003 | |
| 2004 | write(sock, buf, 3); |
| 2005 | |
| 2006 | n = read(sock, buf, 2); |
| 2007 | |
| 2008 | if (n != 2) { |
| 2009 | rfbLog("socks5_proxy: read error: %d\n", n); |
| 2010 | close(sock); |
| 2011 | return 0; |
| 2012 | } |
| 2013 | if (buf[0] != 0x5 || buf[1] != 0x0) { |
| 2014 | rfbLog("socks5_proxy: handshake error: %d %d\n", (int) buf[0], (int) buf[1]); |
| 2015 | close(sock); |
| 2016 | return 0; |
| 2017 | } |
| 2018 | |
| 2019 | buf[0] = 0x5; |
| 2020 | buf[1] = 0x1; |
| 2021 | buf[2] = 0x0; |
| 2022 | buf[3] = 0x3; |
| 2023 | |
| 2024 | buf[4] = (unsigned char) strlen(host); |
| 2025 | strcat((char *) buf+5, host); |
| 2026 | |
| 2027 | len = 5 + strlen(host); |
| 2028 | |
| 2029 | buf[len] = (unsigned char) (port >> 8); |
| 2030 | buf[len+1] = (unsigned char) (port & 0xff); |
| 2031 | |
| 2032 | write(sock, buf, len+2); |
| 2033 | |
| 2034 | for (i=0; i<4; i++) { |
| 2035 | int n; |
| 2036 | n = read(sock, tmp, 1); |
| 2037 | j++; |
| 2038 | if (n < 0) { |
| 2039 | if (errno != EINTR) { |
| 2040 | break; |
| 2041 | } else { |
| 2042 | i--; |
| 2043 | if (j > 100) { |
| 2044 | break; |
| 2045 | } |
| 2046 | continue; |
| 2047 | } |
| 2048 | } |
| 2049 | if (n == 0) { |
| 2050 | break; |
| 2051 | } |
| 2052 | reply[i] = tmp[0]; |
| 2053 | } |
| 2054 | if (reply[3] == 0x1) { |
| 2055 | read(sock, reply+4, 4 + 2); |
| 2056 | } else if (reply[3] == 0x3) { |
| 2057 | n = read(sock, tmp, 1); |
| 2058 | reply[4] = tmp[0]; |
| 2059 | read(sock, reply+5, (int) reply[4] + 2); |
| 2060 | } else if (reply[3] == 0x4) { |
| 2061 | read(sock, reply+4, 16 + 2); |
| 2062 | } |
| 2063 | |
| 2064 | if (0) { |
| 2065 | int i; |
| 2066 | for (i=0; i<len+2; i++) { |
| 2067 | fprintf(stderr, "b[%d]: %d\n", i, (int) buf[i]); |
| 2068 | } |
| 2069 | for (i=0; i<len+2; i++) { |
| 2070 | fprintf(stderr, "r[%d]: %d\n", i, (int) reply[i]); |
| 2071 | } |
| 2072 | } |
| 2073 | if (reply[0] == 0x5 && reply[1] == 0x0 && reply[2] == 0x0) { |
| 2074 | rfbLog("SOCKS5 connect OK to %s:%d sock=%d\n", host, port, sock); |
| 2075 | return 1; |
| 2076 | } else { |
| 2077 | rfbLog("SOCKS5 error to %s:%d sock=%d\n", host, port, sock); |
| 2078 | close(sock); |
| 2079 | return 0; |
| 2080 | } |
| 2081 | } |
| 2082 | |
| 2083 | static int socks_proxy(char *host, int port, int sock) { |
| 2084 | unsigned char buf[512], tmp[2]; |
| 2085 | char reply[16]; |
| 2086 | int socks4a = 0, len, i, j = 0, d1, d2, d3, d4; |
| 2087 | |
| 2088 | memset(buf, 0, 512); |
| 2089 | |
| 2090 | buf[0] = 0x4; |
| 2091 | buf[1] = 0x1; |
| 2092 | buf[2] = (unsigned char) (port >> 8); |
| 2093 | buf[3] = (unsigned char) (port & 0xff); |
| 2094 | |
| 2095 | |
| 2096 | if (strlen(host) > 256) { |
| 2097 | rfbLog("socks_proxy: hostname too long: %s\n", host); |
| 2098 | close(sock); |
| 2099 | return 0; |
| 2100 | } |
| 2101 | |
| 2102 | if (!strcmp(host, "localhost") || !strcmp(host, "127.0.0.1")) { |
| 2103 | buf[4] = 127; |
| 2104 | buf[5] = 0; |
| 2105 | buf[6] = 0; |
| 2106 | buf[7] = 1; |
| 2107 | } else if (sscanf(host, "%d.%d.%d.%d", &d1, &d2, &d3, &d4) == 4) { |
| 2108 | buf[4] = (unsigned char) d1; |
| 2109 | buf[5] = (unsigned char) d2; |
| 2110 | buf[6] = (unsigned char) d3; |
| 2111 | buf[7] = (unsigned char) d4; |
| 2112 | } else { |
| 2113 | buf[4] = 0x0; |
| 2114 | buf[5] = 0x0; |
| 2115 | buf[6] = 0x0; |
| 2116 | buf[7] = 0x3; |
| 2117 | socks4a = 1; |
| 2118 | } |
| 2119 | len = 8; |
| 2120 | |
| 2121 | strcat((char *)buf+8, "nobody"); |
| 2122 | len += strlen("nobody") + 1; |
| 2123 | |
| 2124 | if (socks4a) { |
| 2125 | strcat((char *) buf+8+strlen("nobody") + 1, host); |
| 2126 | len += strlen(host) + 1; |
| 2127 | } |
| 2128 | |
| 2129 | write(sock, buf, len); |
| 2130 | |
| 2131 | for (i=0; i<8; i++) { |
| 2132 | int n; |
| 2133 | n = read(sock, tmp, 1); |
| 2134 | j++; |
| 2135 | if (n < 0) { |
| 2136 | if (errno != EINTR) { |
| 2137 | break; |
| 2138 | } else { |
| 2139 | i--; |
| 2140 | if (j > 100) { |
| 2141 | break; |
| 2142 | } |
| 2143 | continue; |
| 2144 | } |
| 2145 | } |
| 2146 | if (n == 0) { |
| 2147 | break; |
| 2148 | } |
| 2149 | reply[i] = tmp[0]; |
| 2150 | } |
| 2151 | if (0) { |
| 2152 | int i; |
| 2153 | for (i=0; i<len; i++) { |
| 2154 | fprintf(stderr, "b[%d]: %d\n", i, (int) buf[i]); |
| 2155 | } |
| 2156 | for (i=0; i<8; i++) { |
| 2157 | fprintf(stderr, "r[%d]: %d\n", i, (int) reply[i]); |
| 2158 | } |
| 2159 | } |
| 2160 | if (reply[0] == 0x0 && reply[1] == 0x5a) { |
| 2161 | if (socks4a) { |
| 2162 | rfbLog("SOCKS4a connect OK to %s:%d sock=%d\n", host, port, sock); |
| 2163 | } else { |
| 2164 | rfbLog("SOCKS4 connect OK to %s:%d sock=%d\n", host, port, sock); |
| 2165 | } |
| 2166 | return 1; |
| 2167 | } else { |
| 2168 | if (socks4a) { |
| 2169 | rfbLog("SOCKS4a error to %s:%d sock=%d\n", host, port, sock); |
| 2170 | } else { |
| 2171 | rfbLog("SOCKS4 error to %s:%d sock=%d\n", host, port, sock); |
| 2172 | } |
| 2173 | close(sock); |
| 2174 | return 0; |
| 2175 | } |
| 2176 | } |
| 2177 | |
| 2178 | #define PXY_HTTP 1 |
| 2179 | #define PXY_GET 2 |
| 2180 | #define PXY_SOCKS 3 |
| 2181 | #define PXY_SOCKS5 4 |
| 2182 | #define PXY_SSH 5 |
| 2183 | #define PXY 3 |
| 2184 | |
| 2185 | static int pxy_get_sock; |
| 2186 | |
| 2187 | static int pconnect(int psock, char *host, int port, int type, char *http_path, char *gethost, int getport) { |
| 2188 | char reply[4096]; |
| 2189 | int i, ok, len; |
| 2190 | char *req; |
| 2191 | |
| 2192 | pxy_get_sock = -1; |
| 2193 | |
| 2194 | if (type == PXY_SOCKS) { |
| 2195 | return socks_proxy(host, port, psock); |
| 2196 | } |
| 2197 | if (type == PXY_SOCKS5) { |
| 2198 | return socks5_proxy(host, port, psock); |
| 2199 | } |
| 2200 | if (type == PXY_SSH) { |
| 2201 | return 1; |
| 2202 | } |
| 2203 | |
| 2204 | len = strlen("CONNECT ") + strlen(host); |
| 2205 | if (type == PXY_GET) { |
| 2206 | len += strlen(http_path) + strlen(gethost); |
| 2207 | len += strlen("host=") + 1 + strlen("port=") + 1 + 1; |
| 2208 | } |
| 2209 | len += 1 + 20 + strlen("HTTP/1.1\r\n") + 1; |
| 2210 | |
| 2211 | req = (char *)malloc(len); |
| 2212 | |
| 2213 | if (type == PXY_GET) { |
| 2214 | int noquery = 0; |
| 2215 | char *t = strstr(http_path, "__END__"); |
| 2216 | if (t) { |
| 2217 | noquery = 1; |
| 2218 | *t = '\0'; |
| 2219 | } |
| 2220 | |
| 2221 | if (noquery) { |
| 2222 | sprintf(req, "GET %s HTTP/1.1\r\n", http_path); |
| 2223 | } else { |
| 2224 | sprintf(req, "GET %shost=%s&port=%d HTTP/1.1\r\n", http_path, host, port); |
| 2225 | } |
| 2226 | } else { |
| 2227 | sprintf(req, "CONNECT %s:%d HTTP/1.1\r\n", host, port); |
| 2228 | } |
| 2229 | rfbLog("http proxy: %s", req); |
| 2230 | write(psock, req, strlen(req)); |
| 2231 | |
| 2232 | if (type == PXY_GET) { |
| 2233 | char *t = "Connection: close\r\n"; |
| 2234 | write(psock, t, strlen(t)); |
| 2235 | } |
| 2236 | |
| 2237 | if (type == PXY_GET) { |
| 2238 | sprintf(req, "Host: %s:%d\r\n", gethost, getport); |
| 2239 | rfbLog("http proxy: %s", req); |
| 2240 | sprintf(req, "Host: %s:%d\r\n\r\n", gethost, getport); |
| 2241 | } else { |
| 2242 | sprintf(req, "Host: %s:%d\r\n", host, port); |
| 2243 | rfbLog("http proxy: %s", req); |
| 2244 | sprintf(req, "Host: %s:%d\r\n\r\n", host, port); |
| 2245 | } |
| 2246 | |
| 2247 | write(psock, req, strlen(req)); |
| 2248 | |
| 2249 | ok = 0; |
| 2250 | reply[0] = '\0'; |
| 2251 | |
| 2252 | for (i=0; i<4096; i++) { |
| 2253 | int n; |
| 2254 | req[0] = req[1] = '\0'; |
| 2255 | n = read(psock, req, 1); |
| 2256 | if (n < 0) { |
| 2257 | if (errno != EINTR) { |
| 2258 | break; |
| 2259 | } else { |
| 2260 | continue; |
| 2261 | } |
| 2262 | } |
| 2263 | if (n == 0) { |
| 2264 | break; |
| 2265 | } |
| 2266 | strcat(reply, req); |
| 2267 | if (strstr(reply, "\r\n\r\n")) { |
| 2268 | if (strstr(reply, "HTTP/") == reply) { |
| 2269 | char *q = strchr(reply, ' '); |
| 2270 | if (q) { |
| 2271 | q++; |
| 2272 | if (q[0] == '2' && q[1] == '0' && q[2] == '0' && q[3] == ' ') { |
| 2273 | ok = 1; |
| 2274 | } |
| 2275 | } |
| 2276 | } |
| 2277 | break; |
| 2278 | } |
| 2279 | } |
| 2280 | |
| 2281 | if (type == PXY_GET) { |
| 2282 | char *t1 = strstr(reply, "VNC-IP-Port: "); |
| 2283 | char *t2 = strstr(reply, "VNC-Host-Port: "); |
| 2284 | char *s, *newhost = NULL; |
| 2285 | int newport = 0; |
| 2286 | fprintf(stderr, "%s\n", reply); |
| 2287 | if (t1) { |
| 2288 | t1 += strlen("VNC-IP-Port: "); |
| 2289 | s = strstr(t1, ":"); |
| 2290 | if (s) { |
| 2291 | *s = '\0'; |
| 2292 | newhost = strdup(t1); |
| 2293 | newport = atoi(s+1); |
| 2294 | } |
| 2295 | } else if (t2) { |
| 2296 | t2 += strlen("VNC-Host-Port: "); |
| 2297 | s = strstr(t2, ":"); |
| 2298 | if (s) { |
| 2299 | *s = '\0'; |
| 2300 | newhost = strdup(t2); |
| 2301 | newport = atoi(s+1); |
| 2302 | } |
| 2303 | } |
| 2304 | if (newhost && newport > 0) { |
| 2305 | rfbLog("proxy GET reconnect to: %s:%d\n", newhost, newport); |
| 2306 | pxy_get_sock = connect_tcp(newhost, newport); |
| 2307 | } |
| 2308 | } |
| 2309 | free(req); |
| 2310 | |
| 2311 | return ok; |
| 2312 | } |
| 2313 | |
| 2314 | static int proxy_connect(char *host, int port) { |
| 2315 | char *p, *q, *str; |
| 2316 | int i, n, pxy[PXY],pxy_p[PXY]; |
| 2317 | int psock = -1; |
| 2318 | char *pxy_h[PXY], *pxy_g[PXY]; |
| 2319 | |
| 2320 | if (! connect_proxy) { |
| 2321 | return -1; |
| 2322 | } |
| 2323 | str = strdup(connect_proxy); |
| 2324 | |
| 2325 | for (i=0; i<PXY; i++) { |
| 2326 | pxy[i] = 0; |
| 2327 | pxy_p[i] = 0; |
| 2328 | pxy_h[i] = NULL; |
| 2329 | pxy_g[i] = NULL; |
| 2330 | } |
| 2331 | |
| 2332 | n = 0; |
| 2333 | p = str; |
| 2334 | while (p) { |
| 2335 | char *hp, *c, *s = NULL; |
| 2336 | |
| 2337 | q = strchr(p, ','); |
| 2338 | if (q) { |
| 2339 | *q = '\0'; |
| 2340 | } |
| 2341 | |
| 2342 | if (n==0) fprintf(stderr, "\n"); |
| 2343 | rfbLog("proxy_connect[%d]: %s\n", n+1, p); |
| 2344 | |
| 2345 | pxy[n] = 0; |
| 2346 | pxy_p[n] = 0; |
| 2347 | pxy_h[n] = NULL; |
| 2348 | pxy_g[n] = NULL; |
| 2349 | |
| 2350 | if (strstr(p, "socks://") == p) { |
| 2351 | hp = strstr(p, "://") + 3; |
| 2352 | pxy[n] = PXY_SOCKS; |
| 2353 | } else if (strstr(p, "socks4://") == p) { |
| 2354 | hp = strstr(p, "://") + 3; |
| 2355 | pxy[n] = PXY_SOCKS; |
| 2356 | } else if (strstr(p, "socks5://") == p) { |
| 2357 | hp = strstr(p, "://") + 3; |
| 2358 | pxy[n] = PXY_SOCKS5; |
| 2359 | } else if (strstr(p, "ssh://") == p) { |
| 2360 | if (n != 0) { |
| 2361 | rfbLog("ssh:// proxy must be the first one\n"); |
| 2362 | clean_up_exit(1); |
| 2363 | } |
| 2364 | hp = strstr(p, "://") + 3; |
| 2365 | pxy[n] = PXY_SSH; |
| 2366 | } else if (strstr(p, "http://") == p) { |
| 2367 | hp = strstr(p, "://") + 3; |
| 2368 | pxy[n] = PXY_HTTP; |
| 2369 | } else if (strstr(p, "https://") == p) { |
| 2370 | hp = strstr(p, "://") + 3; |
| 2371 | pxy[n] = PXY_HTTP; |
| 2372 | } else { |
| 2373 | hp = p; |
| 2374 | pxy[n] = PXY_HTTP; |
| 2375 | } |
| 2376 | c = strstr(hp, ":"); |
| 2377 | if (!c && pxy[n] == PXY_SSH) { |
| 2378 | char *hp2 = (char *) malloc(strlen(hp) + 5); |
| 2379 | sprintf(hp2, "%s:1", hp); |
| 2380 | hp = hp2; |
| 2381 | c = strstr(hp, ":"); |
| 2382 | } |
| 2383 | if (!c) { |
| 2384 | pxy[n] = 0; |
| 2385 | if (q) { |
| 2386 | *q = ','; |
| 2387 | p = q + 1; |
| 2388 | } else { |
| 2389 | p = NULL; |
| 2390 | } |
| 2391 | continue; |
| 2392 | } |
| 2393 | |
| 2394 | if (pxy[n] == PXY_HTTP) { |
| 2395 | s = strstr(c, "/"); |
| 2396 | if (s) { |
| 2397 | pxy[n] = PXY_GET; |
| 2398 | pxy_g[n] = strdup(s); |
| 2399 | *s = '\0'; |
| 2400 | } |
| 2401 | } |
| 2402 | pxy_p[n] = atoi(c+1); |
| 2403 | |
| 2404 | if (pxy_p[n] <= 0) { |
| 2405 | pxy[n] = 0; |
| 2406 | pxy_p[n] = 0; |
| 2407 | if (q) { |
| 2408 | *q = ','; |
| 2409 | p = q + 1; |
| 2410 | } else { |
| 2411 | p = NULL; |
| 2412 | } |
| 2413 | continue; |
| 2414 | } |
| 2415 | *c = '\0'; |
| 2416 | pxy_h[n] = strdup(hp); |
| 2417 | |
| 2418 | if (++n >= PXY) { |
| 2419 | break; |
| 2420 | } |
| 2421 | |
| 2422 | if (q) { |
| 2423 | *q = ','; |
| 2424 | p = q + 1; |
| 2425 | } else { |
| 2426 | p = NULL; |
| 2427 | } |
| 2428 | } |
| 2429 | free(str); |
| 2430 | |
| 2431 | if (!n) { |
| 2432 | psock = -1; |
| 2433 | goto pxy_clean; |
| 2434 | } |
| 2435 | |
| 2436 | if (pxy[0] == PXY_SSH) { |
| 2437 | int rc, len = 0; |
| 2438 | char *cmd, *ssh; |
| 2439 | int sport = find_free_port(7300, 8000); |
| 2440 | if (getenv("SSH")) { |
| 2441 | ssh = getenv("SSH"); |
| 2442 | } else { |
| 2443 | ssh = "ssh"; |
| 2444 | } |
| 2445 | len = 200 + strlen(ssh) + strlen(pxy_h[0]) + strlen(host); |
| 2446 | cmd = (char *) malloc(len); |
| 2447 | if (n == 1) { |
| 2448 | if (pxy_p[0] <= 1) { |
| 2449 | sprintf(cmd, "%s -f -L '%d:%s:%d' '%s' 'sleep 20'", ssh, sport, host, port, pxy_h[0]); |
| 2450 | } else { |
| 2451 | sprintf(cmd, "%s -f -p %d -L '%d:%s:%d' '%s' 'sleep 20'", ssh, pxy_p[0], sport, host, port, pxy_h[0]); |
| 2452 | } |
| 2453 | } else { |
| 2454 | if (pxy_p[0] <= 1) { |
| 2455 | sprintf(cmd, "%s -f -L '%d:%s:%d' '%s' 'sleep 20'", ssh, sport, pxy_h[1], pxy_p[1], pxy_h[0]); |
| 2456 | } else { |
| 2457 | sprintf(cmd, "%s -f -p %d -L '%d:%s:%d' '%s' 'sleep 20'", ssh, pxy_p[0], sport, pxy_h[1], pxy_p[1], pxy_h[0]); |
| 2458 | } |
| 2459 | } |
| 2460 | if (no_external_cmds || !cmd_ok("ssh")) { |
| 2461 | rfbLogEnable(1); |
| 2462 | rfbLog("cannot run external commands in -nocmds mode:\n"); |
| 2463 | rfbLog(" \"%s\"\n", cmd); |
| 2464 | rfbLog(" exiting.\n"); |
| 2465 | clean_up_exit(1); |
| 2466 | } |
| 2467 | close_exec_fds(); |
| 2468 | fprintf(stderr, "\n"); |
| 2469 | rfbLog("running: %s\n", cmd); |
| 2470 | rc = system(cmd); |
| 2471 | free(cmd); |
| 2472 | if (rc != 0) { |
| 2473 | psock = -1; |
| 2474 | goto pxy_clean; |
| 2475 | } |
| 2476 | psock = connect_tcp("localhost", sport); |
| 2477 | |
| 2478 | } else { |
| 2479 | psock = connect_tcp(pxy_h[0], pxy_p[0]); |
| 2480 | } |
| 2481 | |
| 2482 | if (psock < 0) { |
| 2483 | psock = -1; |
| 2484 | goto pxy_clean; |
| 2485 | } |
| 2486 | rfbLog("opened socket to proxy: %s:%d\n", pxy_h[0], pxy_p[0]); |
| 2487 | |
| 2488 | if (n >= 2) { |
| 2489 | if (! pconnect(psock, pxy_h[1], pxy_p[1], pxy[0], pxy_g[0], pxy_h[0], pxy_p[0])) { |
| 2490 | close(psock); psock = -1; goto pxy_clean; |
| 2491 | } |
| 2492 | if (pxy_get_sock >= 0) {close(psock); psock = pxy_get_sock;} |
| 2493 | |
| 2494 | if (n >= 3) { |
| 2495 | if (! pconnect(psock, pxy_h[2], pxy_p[2], pxy[1], pxy_g[1], pxy_h[1], pxy_p[1])) { |
| 2496 | close(psock); psock = -1; goto pxy_clean; |
| 2497 | } |
| 2498 | if (pxy_get_sock >= 0) {close(psock); psock = pxy_get_sock;} |
| 2499 | if (! pconnect(psock, host, port, pxy[2], pxy_g[2], pxy_h[2], pxy_p[2])) { |
| 2500 | close(psock); psock = -1; goto pxy_clean; |
| 2501 | } |
| 2502 | if (pxy_get_sock >= 0) {close(psock); psock = pxy_get_sock;} |
| 2503 | |
| 2504 | } else { |
| 2505 | if (! pconnect(psock, host, port, pxy[1], pxy_g[1], pxy_h[1], pxy_p[1])) { |
| 2506 | close(psock); psock = -1; goto pxy_clean; |
| 2507 | } |
| 2508 | if (pxy_get_sock >= 0) {close(psock); psock = pxy_get_sock;} |
| 2509 | } |
| 2510 | } else { |
| 2511 | if (! pconnect(psock, host, port, pxy[0], pxy_g[0], pxy_h[0], pxy_p[0])) { |
| 2512 | close(psock); psock = -1; goto pxy_clean; |
| 2513 | } |
| 2514 | if (pxy_get_sock >= 0) {close(psock); psock = pxy_get_sock;} |
| 2515 | } |
| 2516 | |
| 2517 | pxy_clean: |
| 2518 | for (i=0; i < PXY; i++) { |
| 2519 | if (pxy_h[i] != NULL) { |
| 2520 | free(pxy_h[i]); |
| 2521 | } |
| 2522 | if (pxy_g[i] != NULL) { |
| 2523 | free(pxy_g[i]); |
| 2524 | } |
| 2525 | } |
| 2526 | |
| 2527 | return psock; |
| 2528 | } |
| 2529 | |
| 2530 | char *get_repeater_string(char *str, int *len) { |
| 2531 | int pren, which = 0; |
| 2532 | int prestring_len = 0; |
| 2533 | char *prestring = NULL, *ptmp = NULL; |
| 2534 | char *equals = strchr(str, '='); |
| 2535 | char *plus = strrchr(str, '+'); |
| 2536 | |
| 2537 | *len = 0; |
| 2538 | if (!plus || !equals) { |
| 2539 | return NULL; |
| 2540 | } |
| 2541 | |
| 2542 | *plus = '\0'; |
| 2543 | if (strstr(str, "repeater=") == str) { |
| 2544 | /* ultravnc repeater http://www.uvnc.com/addons/repeater.html */ |
| 2545 | prestring_len = 250; |
| 2546 | ptmp = (char *) calloc(prestring_len+1, 1); |
| 2547 | snprintf(ptmp, 250, "%s", str + strlen("repeater=")); |
| 2548 | which = 1; |
| 2549 | } else if (strstr(str, "pre=") == str) { |
| 2550 | prestring_len = strlen(str + strlen("pre=")); |
| 2551 | ptmp = (char *) calloc(prestring_len+1, 1); |
| 2552 | snprintf(ptmp, prestring_len+1, "%s", str + strlen("pre=")); |
| 2553 | which = 2; |
| 2554 | } else if (sscanf(str, "pre%d=", &pren) == 1) { |
| 2555 | if (pren > 0 && pren <= 16384) { |
| 2556 | prestring_len = pren; |
| 2557 | ptmp = (char *) calloc(prestring_len+1, 1); |
| 2558 | snprintf(prestring, prestring_len, "%s", equals+1); |
| 2559 | which = 3; |
| 2560 | } |
| 2561 | } |
| 2562 | if (ptmp != NULL) { |
| 2563 | int i, k = 0; |
| 2564 | char *p = ptmp; |
| 2565 | prestring = (char *)calloc(prestring_len+1, 1); |
| 2566 | /* translate \n to newline, etc. */ |
| 2567 | for (i=0; i < prestring_len; i++) { |
| 2568 | if (i < prestring_len-1 && *(p+i) == '\\') { |
| 2569 | if (*(p+i+1) == 'r') { |
| 2570 | prestring[k++] = '\r'; i++; |
| 2571 | } else if (*(p+i+1) == 'n') { |
| 2572 | prestring[k++] = '\n'; i++; |
| 2573 | } else if (*(p+i+1) == 't') { |
| 2574 | prestring[k++] = '\t'; i++; |
| 2575 | } else if (*(p+i+1) == 'a') { |
| 2576 | prestring[k++] = '\a'; i++; |
| 2577 | } else if (*(p+i+1) == 'b') { |
| 2578 | prestring[k++] = '\b'; i++; |
| 2579 | } else if (*(p+i+1) == 'v') { |
| 2580 | prestring[k++] = '\v'; i++; |
| 2581 | } else if (*(p+i+1) == 'f') { |
| 2582 | prestring[k++] = '\f'; i++; |
| 2583 | } else if (*(p+i+1) == '\\') { |
| 2584 | prestring[k++] = '\\'; i++; |
| 2585 | } else if (*(p+i+1) == 'c') { |
| 2586 | prestring[k++] = ','; i++; |
| 2587 | } else { |
| 2588 | prestring[k++] = *(p+i); |
| 2589 | } |
| 2590 | } else { |
| 2591 | prestring[k++] = *(p+i); |
| 2592 | } |
| 2593 | } |
| 2594 | if (which == 2) { |
| 2595 | prestring_len = k; |
| 2596 | } |
| 2597 | if (!quiet) { |
| 2598 | rfbLog("-connect prestring: '%s'\n", prestring); |
| 2599 | } |
| 2600 | free(ptmp); |
| 2601 | } |
| 2602 | *plus = '+'; |
| 2603 | |
| 2604 | *len = prestring_len; |
| 2605 | return prestring; |
| 2606 | } |
| 2607 | |
| 2608 | #ifndef USE_TIMEOUT_INTERRUPT |
| 2609 | #define USE_TIMEOUT_INTERRUPT 0 |
| 2610 | #endif |
| 2611 | |
| 2612 | static void reverse_connect_timeout (int sig) { |
| 2613 | rfbLog("sig: %d, reverse_connect_timeout.\n", sig); |
| 2614 | #if USE_TIMEOUT_INTERRUPT |
| 2615 | rfbLog("reverse_connect_timeout proceeding assuming connect(2) interrupt.\n"); |
| 2616 | #else |
| 2617 | clean_up_exit(0); |
| 2618 | #endif |
| 2619 | } |
| 2620 | |
| 2621 | |
| 2622 | /* |
| 2623 | * Do a reverse connect for a single "host" or "host:port" |
| 2624 | */ |
| 2625 | |
| 2626 | static int do_reverse_connect(char *str_in) { |
| 2627 | rfbClientPtr cl; |
| 2628 | char *host, *p, *str = str_in, *s = NULL; |
| 2629 | char *prestring = NULL; |
| 2630 | int prestring_len = 0; |
| 2631 | int rport = 5500, len = strlen(str); |
| 2632 | int set_alarm = 0; |
| 2633 | |
| 2634 | if (len < 1) { |
| 2635 | return 0; |
| 2636 | } |
| 2637 | if (len > 1024) { |
| 2638 | rfbLog("reverse_connect: string too long: %d bytes\n", len); |
| 2639 | return 0; |
| 2640 | } |
| 2641 | if (!screen) { |
| 2642 | rfbLog("reverse_connect: screen not setup yet.\n"); |
| 2643 | return 0; |
| 2644 | } |
| 2645 | if (unixpw_in_progress) return 0; |
| 2646 | |
| 2647 | /* look for repeater pre-string */ |
| 2648 | if (strchr(str, '=') && strrchr(str, '+') |
| 2649 | && (strstr(str, "pre") == str || strstr(str, "repeater=") == str)) { |
| 2650 | prestring = get_repeater_string(str, &prestring_len); |
| 2651 | str = strrchr(str, '+') + 1; |
| 2652 | } else if (strrchr(str, '+') && strstr(str, "repeater://") == str) { |
| 2653 | /* repeater://host:port+string */ |
| 2654 | /* repeater=string+host:port */ |
| 2655 | char *plus = strrchr(str, '+'); |
| 2656 | str = (char *) malloc(strlen(str_in)+1); |
| 2657 | s = str; |
| 2658 | *plus = '\0'; |
| 2659 | sprintf(str, "repeater=%s+%s", plus+1, str_in + strlen("repeater://")); |
| 2660 | prestring = get_repeater_string(str, &prestring_len); |
| 2661 | str = strrchr(str, '+') + 1; |
| 2662 | *plus = '+'; |
| 2663 | } |
| 2664 | |
| 2665 | /* copy in to host */ |
| 2666 | host = (char *) malloc(len+1); |
| 2667 | if (! host) { |
| 2668 | rfbLog("reverse_connect: could not malloc string %d\n", len); |
| 2669 | return 0; |
| 2670 | } |
| 2671 | strncpy(host, str, len); |
| 2672 | host[len] = '\0'; |
| 2673 | |
| 2674 | /* extract port, if any */ |
| 2675 | if ((p = strrchr(host, ':')) != NULL) { |
| 2676 | rport = atoi(p+1); |
| 2677 | if (rport < 0) { |
| 2678 | rport = -rport; |
| 2679 | } else if (rport < 20) { |
| 2680 | rport = 5500 + rport; |
| 2681 | } |
| 2682 | *p = '\0'; |
| 2683 | } |
| 2684 | |
| 2685 | if (ipv6_client_ip_str) { |
| 2686 | free(ipv6_client_ip_str); |
| 2687 | ipv6_client_ip_str = NULL; |
| 2688 | } |
| 2689 | |
| 2690 | if (use_openssl) { |
| 2691 | int vncsock; |
| 2692 | if (connect_proxy) { |
| 2693 | vncsock = proxy_connect(host, rport); |
| 2694 | } else { |
| 2695 | vncsock = connect_tcp(host, rport); |
| 2696 | } |
| 2697 | if (vncsock < 0) { |
| 2698 | rfbLog("reverse_connect: failed to connect to: %s\n", str); |
| 2699 | return 0; |
| 2700 | } |
| 2701 | if (prestring != NULL) { |
| 2702 | write(vncsock, prestring, prestring_len); |
| 2703 | free(prestring); |
| 2704 | } |
| 2705 | /* XXX use header */ |
| 2706 | #define OPENSSL_REVERSE 6 |
| 2707 | if (!getenv("X11VNC_DISABLE_SSL_CLIENT_MODE")) { |
| 2708 | openssl_init(1); |
| 2709 | } |
| 2710 | |
| 2711 | if (first_conn_timeout > 0) { |
| 2712 | set_alarm = 1; |
| 2713 | signal(SIGALRM, reverse_connect_timeout); |
| 2714 | #if USE_TIMEOUT_INTERRUPT |
| 2715 | siginterrupt(SIGALRM, 1); |
| 2716 | #endif |
| 2717 | rfbLog("reverse_connect: using alarm() timeout of %d seconds.\n", first_conn_timeout); |
| 2718 | alarm(first_conn_timeout); |
| 2719 | } |
| 2720 | accept_openssl(OPENSSL_REVERSE, vncsock); |
| 2721 | if (set_alarm) {alarm(0); signal(SIGALRM, SIG_DFL);} |
| 2722 | |
| 2723 | openssl_init(0); |
| 2724 | free(host); |
| 2725 | return 1; |
| 2726 | } |
| 2727 | |
| 2728 | if (use_stunnel) { |
| 2729 | if(strcmp(host, "localhost") && strcmp(host, "127.0.0.1")) { |
| 2730 | if (!getenv("STUNNEL_DISABLE_LOCALHOST")) { |
| 2731 | rfbLog("reverse_connect: error host not localhost in -stunnel mode.\n"); |
| 2732 | return 0; |
| 2733 | } |
| 2734 | } |
| 2735 | } |
| 2736 | |
| 2737 | if (unixpw) { |
| 2738 | int is_localhost = 0, user_disabled_it = 0; |
| 2739 | |
| 2740 | if(!strcmp(host, "localhost") || !strcmp(host, "127.0.0.1")) { |
| 2741 | is_localhost = 1; |
| 2742 | } |
| 2743 | if (getenv("UNIXPW_DISABLE_LOCALHOST")) { |
| 2744 | user_disabled_it = 1; |
| 2745 | } |
| 2746 | |
| 2747 | if (! is_localhost) { |
| 2748 | if (user_disabled_it) { |
| 2749 | rfbLog("reverse_connect: warning disabling localhost constraint in -unixpw\n"); |
| 2750 | } else { |
| 2751 | rfbLog("reverse_connect: error not localhost in -unixpw\n"); |
| 2752 | return 0; |
| 2753 | } |
| 2754 | } |
| 2755 | } |
| 2756 | |
| 2757 | if (first_conn_timeout > 0) { |
| 2758 | set_alarm = 1; |
| 2759 | signal(SIGALRM, reverse_connect_timeout); |
| 2760 | #if USE_TIMEOUT_INTERRUPT |
| 2761 | siginterrupt(SIGALRM, 1); |
| 2762 | #endif |
| 2763 | rfbLog("reverse_connect: using alarm() timeout of %d seconds.\n", first_conn_timeout); |
| 2764 | alarm(first_conn_timeout); |
| 2765 | } |
| 2766 | |
| 2767 | if (connect_proxy != NULL) { |
| 2768 | int sock = proxy_connect(host, rport); |
| 2769 | if (set_alarm) {alarm(0); signal(SIGALRM, SIG_DFL);} |
| 2770 | if (sock >= 0) { |
| 2771 | if (prestring != NULL) { |
| 2772 | write(sock, prestring, prestring_len); |
| 2773 | free(prestring); |
| 2774 | } |
| 2775 | cl = create_new_client(sock, 1); |
| 2776 | } else { |
| 2777 | return 0; |
| 2778 | } |
| 2779 | } else if (prestring != NULL) { |
| 2780 | int sock = connect_tcp(host, rport); |
| 2781 | if (set_alarm) {alarm(0); signal(SIGALRM, SIG_DFL);} |
| 2782 | if (sock >= 0) { |
| 2783 | write(sock, prestring, prestring_len); |
| 2784 | free(prestring); |
| 2785 | cl = create_new_client(sock, 1); |
| 2786 | } else { |
| 2787 | return 0; |
| 2788 | } |
| 2789 | } else { |
| 2790 | cl = rfbReverseConnection(screen, host, rport); |
| 2791 | if (cl == NULL) { |
| 2792 | int sock = connect_tcp(host, rport); |
| 2793 | if (sock >= 0) { |
| 2794 | cl = create_new_client(sock, 1); |
| 2795 | } |
| 2796 | } |
| 2797 | if (set_alarm) {alarm(0); signal(SIGALRM, SIG_DFL);} |
| 2798 | if (cl != NULL && use_threads) { |
| 2799 | cl->onHold = FALSE; |
| 2800 | rfbStartOnHoldClient(cl); |
| 2801 | } |
| 2802 | } |
| 2803 | |
| 2804 | free(host); |
| 2805 | |
| 2806 | if (ipv6_client_ip_str) { |
| 2807 | free(ipv6_client_ip_str); |
| 2808 | ipv6_client_ip_str = NULL; |
| 2809 | } |
| 2810 | |
| 2811 | |
| 2812 | if (cl == NULL) { |
| 2813 | if (quiet && connect_or_exit) { |
| 2814 | rfbLogEnable(1); |
| 2815 | } |
| 2816 | rfbLog("reverse_connect: %s failed\n", str); |
| 2817 | return 0; |
| 2818 | } else { |
| 2819 | rfbLog("reverse_connect: %s/%s OK\n", str, cl->host); |
| 2820 | /* let's see if anyone complains: */ |
| 2821 | if (! getenv("X11VNC_REVERSE_CONNECTION_NO_AUTH")) { |
| 2822 | rfbLog("reverse_connect: turning on auth for %s\n", |
| 2823 | cl->host); |
| 2824 | cl->reverseConnection = FALSE; |
| 2825 | } |
| 2826 | return 1; |
| 2827 | } |
| 2828 | } |
| 2829 | |
| 2830 | /* |
| 2831 | * Break up comma separated list of hosts and call do_reverse_connect() |
| 2832 | */ |
| 2833 | void reverse_connect(char *str) { |
| 2834 | char *p, *tmp; |
| 2835 | int sleep_between_host = 300; |
| 2836 | int sleep_min = 1500, sleep_max = 4500, n_max = 5; |
| 2837 | int n, tot, t, dt = 100, cnt = 0; |
| 2838 | int nclients0 = client_count; |
| 2839 | int lcnt, j; |
| 2840 | char **list; |
| 2841 | int do_appshare = 0; |
| 2842 | |
| 2843 | if (!getenv("X11VNC_REVERSE_USE_OLD_SLEEP")) { |
| 2844 | sleep_min = 500; |
| 2845 | sleep_max = 2500; |
| 2846 | } |
| 2847 | |
| 2848 | if (unixpw_in_progress) return; |
| 2849 | |
| 2850 | tmp = strdup(str); |
| 2851 | |
| 2852 | list = (char **) calloc( (strlen(tmp)+2) * sizeof (char *), 1); |
| 2853 | lcnt = 0; |
| 2854 | |
| 2855 | p = strtok(tmp, ", \t\r\n"); |
| 2856 | while (p) { |
| 2857 | list[lcnt++] = strdup(p); |
| 2858 | p = strtok(NULL, ", \t\r\n"); |
| 2859 | } |
| 2860 | free(tmp); |
| 2861 | |
| 2862 | if (subwin && getenv("X11VNC_APPSHARE_ACTIVE")) { |
| 2863 | do_appshare = 1; |
| 2864 | sleep_between_host = 0; /* too agressive??? */ |
| 2865 | } |
| 2866 | if (getenv("X11VNC_REVERSE_SLEEP_BETWEEN_HOST")) { |
| 2867 | sleep_between_host = atoi(getenv("X11VNC_REVERSE_SLEEP_BETWEEN_HOST")); |
| 2868 | } |
| 2869 | |
| 2870 | if (do_appshare) { |
| 2871 | if (screen && dpy) { |
| 2872 | char *s = choose_title(DisplayString(dpy)); |
| 2873 | |
| 2874 | /* mutex */ |
| 2875 | screen->desktopName = s; |
| 2876 | if (rfb_desktop_name) { |
| 2877 | free(rfb_desktop_name); |
| 2878 | } |
| 2879 | rfb_desktop_name = strdup(s); |
| 2880 | } |
| 2881 | } |
| 2882 | |
| 2883 | for (j = 0; j < lcnt; j++) { |
| 2884 | p = list[j]; |
| 2885 | |
| 2886 | if ((n = do_reverse_connect(p)) != 0) { |
| 2887 | int i; |
| 2888 | progress_client(); |
| 2889 | for (i=0; i < 3; i++) { |
| 2890 | rfbPE(-1); |
| 2891 | } |
| 2892 | } |
| 2893 | cnt += n; |
| 2894 | if (list[j+1] != NULL) { |
| 2895 | t = 0; |
| 2896 | while (t < sleep_between_host) { |
| 2897 | double t1, t2; |
| 2898 | int i; |
| 2899 | t1 = dnow(); |
| 2900 | for (i=0; i < 8; i++) { |
| 2901 | rfbPE(-1); |
| 2902 | if (do_appshare && t == 0) { |
| 2903 | rfbPE(-1); |
| 2904 | } |
| 2905 | } |
| 2906 | t2 = dnow(); |
| 2907 | t += (int) (1000 * (t2 - t1)); |
| 2908 | if (t >= sleep_between_host) { |
| 2909 | break; |
| 2910 | } |
| 2911 | usleep(dt * 1000); |
| 2912 | t += dt; |
| 2913 | } |
| 2914 | } |
| 2915 | } |
| 2916 | |
| 2917 | for (j = 0; j < lcnt; j++) { |
| 2918 | p = list[j]; |
| 2919 | if (p) free(p); |
| 2920 | } |
| 2921 | free(list); |
| 2922 | |
| 2923 | if (cnt == 0) { |
| 2924 | if (connect_or_exit) { |
| 2925 | rfbLogEnable(1); |
| 2926 | rfbLog("exiting under -connect_or_exit\n"); |
| 2927 | if (gui_pid > 0) { |
| 2928 | rfbLog("killing gui_pid %d\n", gui_pid); |
| 2929 | kill(gui_pid, SIGTERM); |
| 2930 | } |
| 2931 | clean_up_exit(1); |
| 2932 | } |
| 2933 | if (xrandr || xrandr_maybe) { |
| 2934 | check_xrandr_event("reverse_connect1"); |
| 2935 | } |
| 2936 | return; |
| 2937 | } |
| 2938 | |
| 2939 | /* |
| 2940 | * XXX: we need to process some of the initial handshaking |
| 2941 | * events, otherwise the client can get messed up (why??) |
| 2942 | * so we send rfbProcessEvents() all over the place. |
| 2943 | * |
| 2944 | * How much is this still needed? |
| 2945 | */ |
| 2946 | |
| 2947 | n = cnt; |
| 2948 | if (n >= n_max) { |
| 2949 | n = n_max; |
| 2950 | } |
| 2951 | t = sleep_max - sleep_min; |
| 2952 | tot = sleep_min + ((n-1) * t) / (n_max-1); |
| 2953 | |
| 2954 | if (do_appshare) { |
| 2955 | tot /= 3; |
| 2956 | if (tot < dt) { |
| 2957 | tot = dt; |
| 2958 | } |
| 2959 | tot = 0; /* too agressive??? */ |
| 2960 | } |
| 2961 | |
| 2962 | if (getenv("X11VNC_REVERSE_SLEEP_MAX")) { |
| 2963 | tot = atoi(getenv("X11VNC_REVERSE_SLEEP_MAX")); |
| 2964 | } |
| 2965 | |
| 2966 | t = 0; |
| 2967 | while (t < tot) { |
| 2968 | int i; |
| 2969 | double t1, t2; |
| 2970 | t1 = dnow(); |
| 2971 | for (i=0; i < 8; i++) { |
| 2972 | rfbPE(-1); |
| 2973 | if (t == 0) rfbPE(-1); |
| 2974 | } |
| 2975 | t2 = dnow(); |
| 2976 | t += (int) (1000 * (t2 - t1)); |
| 2977 | if (t >= tot) { |
| 2978 | break; |
| 2979 | } |
| 2980 | usleep(dt * 1000); |
| 2981 | t += dt; |
| 2982 | } |
| 2983 | if (connect_or_exit) { |
| 2984 | if (client_count <= nclients0) { |
| 2985 | for (t = 0; t < 10; t++) { |
| 2986 | int i; |
| 2987 | for (i=0; i < 3; i++) { |
| 2988 | rfbPE(-1); |
| 2989 | } |
| 2990 | usleep(100 * 1000); |
| 2991 | } |
| 2992 | } |
| 2993 | if (client_count <= nclients0) { |
| 2994 | rfbLogEnable(1); |
| 2995 | rfbLog("exiting under -connect_or_exit\n"); |
| 2996 | if (gui_pid > 0) { |
| 2997 | rfbLog("killing gui_pid %d\n", gui_pid); |
| 2998 | kill(gui_pid, SIGTERM); |
| 2999 | } |
| 3000 | clean_up_exit(1); |
| 3001 | } |
| 3002 | } |
| 3003 | if (xrandr || xrandr_maybe) { |
| 3004 | check_xrandr_event("reverse_connect2"); |
| 3005 | } |
| 3006 | } |
| 3007 | |
| 3008 | /* |
| 3009 | * Routines for monitoring the VNC_CONNECT and X11VNC_REMOTE properties |
| 3010 | * for changes. The vncconnect(1) will set it on our X display. |
| 3011 | */ |
| 3012 | void set_vnc_connect_prop(char *str) { |
| 3013 | RAWFB_RET_VOID |
| 3014 | #if !NO_X11 |
| 3015 | if (vnc_connect_prop == None) return; |
| 3016 | XChangeProperty(dpy, rootwin, vnc_connect_prop, XA_STRING, 8, |
| 3017 | PropModeReplace, (unsigned char *)str, strlen(str)); |
| 3018 | #else |
| 3019 | if (!str) {} |
| 3020 | #endif /* NO_X11 */ |
| 3021 | } |
| 3022 | |
| 3023 | void set_x11vnc_remote_prop(char *str) { |
| 3024 | RAWFB_RET_VOID |
| 3025 | #if !NO_X11 |
| 3026 | if (x11vnc_remote_prop == None) return; |
| 3027 | XChangeProperty(dpy, rootwin, x11vnc_remote_prop, XA_STRING, 8, |
| 3028 | PropModeReplace, (unsigned char *)str, strlen(str)); |
| 3029 | #else |
| 3030 | if (!str) {} |
| 3031 | #endif /* NO_X11 */ |
| 3032 | } |
| 3033 | |
| 3034 | void read_vnc_connect_prop(int nomsg) { |
| 3035 | #if NO_X11 |
| 3036 | RAWFB_RET_VOID |
| 3037 | if (!nomsg) {} |
| 3038 | return; |
| 3039 | #else |
| 3040 | Atom type; |
| 3041 | int format, slen, dlen; |
| 3042 | unsigned long nitems = 0, bytes_after = 0; |
| 3043 | unsigned char* data = NULL; |
| 3044 | int db = 1; |
| 3045 | |
| 3046 | vnc_connect_str[0] = '\0'; |
| 3047 | slen = 0; |
| 3048 | |
| 3049 | if (! vnc_connect || vnc_connect_prop == None) { |
| 3050 | /* not active or problem with VNC_CONNECT atom */ |
| 3051 | return; |
| 3052 | } |
| 3053 | RAWFB_RET_VOID |
| 3054 | |
| 3055 | /* read the property value into vnc_connect_str: */ |
| 3056 | do { |
| 3057 | if (XGetWindowProperty(dpy, DefaultRootWindow(dpy), |
| 3058 | vnc_connect_prop, nitems/4, VNC_CONNECT_MAX/16, False, |
| 3059 | AnyPropertyType, &type, &format, &nitems, &bytes_after, |
| 3060 | &data) == Success) { |
| 3061 | |
| 3062 | dlen = nitems * (format/8); |
| 3063 | if (slen + dlen > VNC_CONNECT_MAX) { |
| 3064 | /* too big */ |
| 3065 | rfbLog("warning: truncating large VNC_CONNECT" |
| 3066 | " string > %d bytes.\n", VNC_CONNECT_MAX); |
| 3067 | XFree_wr(data); |
| 3068 | break; |
| 3069 | } |
| 3070 | memcpy(vnc_connect_str+slen, data, dlen); |
| 3071 | slen += dlen; |
| 3072 | vnc_connect_str[slen] = '\0'; |
| 3073 | XFree_wr(data); |
| 3074 | } |
| 3075 | } while (bytes_after > 0); |
| 3076 | |
| 3077 | vnc_connect_str[VNC_CONNECT_MAX] = '\0'; |
| 3078 | if (! db || nomsg) { |
| 3079 | ; |
| 3080 | } else { |
| 3081 | rfbLog("read VNC_CONNECT: %s\n", vnc_connect_str); |
| 3082 | } |
| 3083 | #endif /* NO_X11 */ |
| 3084 | } |
| 3085 | |
| 3086 | void read_x11vnc_remote_prop(int nomsg) { |
| 3087 | #if NO_X11 |
| 3088 | RAWFB_RET_VOID |
| 3089 | if (!nomsg) {} |
| 3090 | return; |
| 3091 | #else |
| 3092 | Atom type; |
| 3093 | int format, slen, dlen; |
| 3094 | unsigned long nitems = 0, bytes_after = 0; |
| 3095 | unsigned char* data = NULL; |
| 3096 | int db = 1; |
| 3097 | |
| 3098 | x11vnc_remote_str[0] = '\0'; |
| 3099 | slen = 0; |
| 3100 | |
| 3101 | if (! vnc_connect || x11vnc_remote_prop == None) { |
| 3102 | /* not active or problem with X11VNC_REMOTE atom */ |
| 3103 | return; |
| 3104 | } |
| 3105 | RAWFB_RET_VOID |
| 3106 | |
| 3107 | /* read the property value into x11vnc_remote_str: */ |
| 3108 | do { |
| 3109 | if (XGetWindowProperty(dpy, DefaultRootWindow(dpy), |
| 3110 | x11vnc_remote_prop, nitems/4, X11VNC_REMOTE_MAX/16, False, |
| 3111 | AnyPropertyType, &type, &format, &nitems, &bytes_after, |
| 3112 | &data) == Success) { |
| 3113 | |
| 3114 | dlen = nitems * (format/8); |
| 3115 | if (slen + dlen > X11VNC_REMOTE_MAX) { |
| 3116 | /* too big */ |
| 3117 | rfbLog("warning: truncating large X11VNC_REMOTE" |
| 3118 | " string > %d bytes.\n", X11VNC_REMOTE_MAX); |
| 3119 | XFree_wr(data); |
| 3120 | break; |
| 3121 | } |
| 3122 | memcpy(x11vnc_remote_str+slen, data, dlen); |
| 3123 | slen += dlen; |
| 3124 | x11vnc_remote_str[slen] = '\0'; |
| 3125 | XFree_wr(data); |
| 3126 | } |
| 3127 | } while (bytes_after > 0); |
| 3128 | |
| 3129 | x11vnc_remote_str[X11VNC_REMOTE_MAX] = '\0'; |
| 3130 | if (! db || nomsg) { |
| 3131 | ; |
| 3132 | } else if (strstr(x11vnc_remote_str, "ans=stop:N/A,ans=quit:N/A,ans=")) { |
| 3133 | ; |
| 3134 | } else if (strstr(x11vnc_remote_str, "qry=stop,quit,exit")) { |
| 3135 | ; |
| 3136 | } else if (strstr(x11vnc_remote_str, "ack=") == x11vnc_remote_str) { |
| 3137 | ; |
| 3138 | } else if (quiet && strstr(x11vnc_remote_str, "qry=ping") == |
| 3139 | x11vnc_remote_str) { |
| 3140 | ; |
| 3141 | } else if (strstr(x11vnc_remote_str, "cmd=") && |
| 3142 | strstr(x11vnc_remote_str, "passwd")) { |
| 3143 | rfbLog("read X11VNC_REMOTE: *\n"); |
| 3144 | } else if (strlen(x11vnc_remote_str) > 36) { |
| 3145 | char trim[100]; |
| 3146 | trim[0] = '\0'; |
| 3147 | strncat(trim, x11vnc_remote_str, 36); |
| 3148 | rfbLog("read X11VNC_REMOTE: %s ...\n", trim); |
| 3149 | |
| 3150 | } else { |
| 3151 | rfbLog("read X11VNC_REMOTE: %s\n", x11vnc_remote_str); |
| 3152 | } |
| 3153 | #endif /* NO_X11 */ |
| 3154 | } |
| 3155 | |
| 3156 | extern int rc_npieces; |
| 3157 | |
| 3158 | void grab_state(int *ptr_grabbed, int *kbd_grabbed) { |
| 3159 | int rcp, rck; |
| 3160 | double t0, t1; |
| 3161 | double ta, tb, tc; |
| 3162 | *ptr_grabbed = -1; |
| 3163 | *kbd_grabbed = -1; |
| 3164 | |
| 3165 | if (!dpy) { |
| 3166 | return; |
| 3167 | } |
| 3168 | *ptr_grabbed = 0; |
| 3169 | *kbd_grabbed = 0; |
| 3170 | |
| 3171 | #if !NO_X11 |
| 3172 | X_LOCK; |
| 3173 | |
| 3174 | XSync(dpy, False); |
| 3175 | |
| 3176 | ta = t0 = dnow(); |
| 3177 | |
| 3178 | rcp = XGrabPointer(dpy, window, False, 0, GrabModeAsync, GrabModeAsync, None, None, CurrentTime); |
| 3179 | XUngrabPointer(dpy, CurrentTime); |
| 3180 | |
| 3181 | tb = dnow(); |
| 3182 | |
| 3183 | rck = XGrabKeyboard(dpy, window, False, GrabModeAsync, GrabModeAsync, CurrentTime); |
| 3184 | XUngrabKeyboard(dpy, CurrentTime); |
| 3185 | |
| 3186 | tc = dnow(); |
| 3187 | |
| 3188 | XSync(dpy, False); |
| 3189 | |
| 3190 | t1 = dnow(); |
| 3191 | |
| 3192 | X_UNLOCK; |
| 3193 | if (rcp == AlreadyGrabbed || rcp == GrabFrozen) { |
| 3194 | *ptr_grabbed = 1; |
| 3195 | } |
| 3196 | if (rck == AlreadyGrabbed || rck == GrabFrozen) { |
| 3197 | *kbd_grabbed = 1; |
| 3198 | } |
| 3199 | if (rc_npieces < 10) { |
| 3200 | rfbLog("grab_state: checked %d,%d in %.6f sec (%.6f %.6f)\n", |
| 3201 | *ptr_grabbed, *kbd_grabbed, t1-t0, tb-ta, tc-tb); |
| 3202 | } |
| 3203 | #endif |
| 3204 | } |
| 3205 | |
| 3206 | static void pmove(int x, int y) { |
| 3207 | if (x < 0 || y < 0) { |
| 3208 | rfbLog("pmove: skipping negative x or y: %d %d\n", x, y); |
| 3209 | return; |
| 3210 | } |
| 3211 | rfbLog("pmove: x y: %d %d\n", x, y); |
| 3212 | pointer_event(0, x, y, NULL); |
| 3213 | X_LOCK; |
| 3214 | XFlush_wr(dpy); |
| 3215 | X_UNLOCK; |
| 3216 | } |
| 3217 | |
| 3218 | |
| 3219 | char *bcx_xattach(char *str, int *pg_init, int *kg_init) { |
| 3220 | int grab_check = 1; |
| 3221 | int shift = 20; |
| 3222 | int final_x = 30, final_y = 30; |
| 3223 | int extra_x = -1, extra_y = -1; |
| 3224 | int t1, t2, dt = 40 * 1000; |
| 3225 | int ifneeded = 0; |
| 3226 | char *dir = "none", *flip = "none", *q; |
| 3227 | int pg1, kg1, pg2, kg2; |
| 3228 | char _bcx_res[128]; |
| 3229 | |
| 3230 | /* str:[up,down,left,right]+nograbcheck+shift=n+final=x+y+extra_move=x+y+[master_to_slave,slave_to_master,M2S,S2M]+dt=n+retry=n+ifneeded */ |
| 3231 | |
| 3232 | if (strstr(str, "up")) { |
| 3233 | dir = "up"; |
| 3234 | } else if (strstr(str, "down")) { |
| 3235 | dir = "down"; |
| 3236 | } else if (strstr(str, "left")) { |
| 3237 | dir = "left"; |
| 3238 | } else if (strstr(str, "right")) { |
| 3239 | dir = "right"; |
| 3240 | } else { |
| 3241 | return strdup("FAIL,NO_DIRECTION_SPECIFIED"); |
| 3242 | } |
| 3243 | |
| 3244 | if (strstr(str, "master_to_slave") || strstr(str, "M2S")) { |
| 3245 | flip = "M2S"; |
| 3246 | } else if (strstr(str, "slave_to_master") || strstr(str, "S2M")) { |
| 3247 | flip = "S2M"; |
| 3248 | } else { |
| 3249 | return strdup("FAIL,NO_MODE_CHANGE_SPECIFIED"); |
| 3250 | } |
| 3251 | |
| 3252 | if (strstr(str, "nograbcheck")) { |
| 3253 | grab_check = 0; |
| 3254 | } |
| 3255 | if (strstr(str, "ifneeded")) { |
| 3256 | ifneeded = 1; |
| 3257 | } |
| 3258 | q = strstr(str, "shift="); |
| 3259 | if (q && sscanf(q, "shift=%d", &t1) == 1) { |
| 3260 | shift = t1; |
| 3261 | } |
| 3262 | q = strstr(str, "final="); |
| 3263 | if (q && sscanf(q, "final=%d+%d", &t1, &t2) == 2) { |
| 3264 | final_x = t1; |
| 3265 | final_y = t2; |
| 3266 | } |
| 3267 | q = strstr(str, "extra_move="); |
| 3268 | if (q && sscanf(q, "extra_move=%d+%d", &t1, &t2) == 2) { |
| 3269 | extra_x = t1; |
| 3270 | extra_y = t2; |
| 3271 | } |
| 3272 | q = strstr(str, "dt="); |
| 3273 | if (q && sscanf(q, "dt=%d", &t1) == 1) { |
| 3274 | dt = t1 * 1000; |
| 3275 | } |
| 3276 | |
| 3277 | if (grab_check) { |
| 3278 | int read_init = 0; |
| 3279 | |
| 3280 | if (*pg_init >=0 && *kg_init >=0) { |
| 3281 | pg1 = *pg_init; |
| 3282 | kg1 = *kg_init; |
| 3283 | read_init = 1; |
| 3284 | } else { |
| 3285 | grab_state(&pg1, &kg1); |
| 3286 | read_init = 0; |
| 3287 | } |
| 3288 | |
| 3289 | if (!strcmp(flip, "M2S")) { |
| 3290 | if (ifneeded && pg1 == 1 && kg1 == 1) { |
| 3291 | rfbLog("bcx_xattach: M2S grab state is already what we want, skipping moves: %d,%d\n", pg1, kg1); |
| 3292 | return strdup("DONE,GRAB_OK"); |
| 3293 | } |
| 3294 | } else if (!strcmp(flip, "S2M")) { |
| 3295 | if (ifneeded && pg1 == 0 && kg1 == 0) { |
| 3296 | rfbLog("bcx_xattach: S2M grab state is already what we want, skipping moves: %d,%d\n", pg1, kg1); |
| 3297 | return strdup("DONE,GRAB_OK"); |
| 3298 | } |
| 3299 | } |
| 3300 | |
| 3301 | if (read_init) { |
| 3302 | ; |
| 3303 | } else if (!strcmp(flip, "M2S")) { |
| 3304 | if (pg1 != 0 || kg1 != 0) { |
| 3305 | rfbLog("bcx_xattach: M2S init grab state incorrect: %d,%d\n", pg1, kg1); |
| 3306 | usleep(2*dt); |
| 3307 | grab_state(&pg1, &kg1); |
| 3308 | rfbLog("bcx_xattach: slept and retried, grab is now: %d,%d\n", pg1, kg1); |
| 3309 | } |
| 3310 | } else if (!strcmp(flip, "S2M")) { |
| 3311 | if (pg1 != 1 || kg1 != 1) { |
| 3312 | rfbLog("bcx_xattach: S2M init grab state incorrect: %d,%d\n", pg1, kg1); |
| 3313 | usleep(2*dt); |
| 3314 | grab_state(&pg1, &kg1); |
| 3315 | rfbLog("bcx_xattach: slept and retried, grab is now: %d,%d\n", pg1, kg1); |
| 3316 | } |
| 3317 | } |
| 3318 | if (!read_init) { |
| 3319 | *pg_init = pg1; |
| 3320 | *kg_init = kg1; |
| 3321 | } |
| 3322 | } |
| 3323 | |
| 3324 | /* |
| 3325 | * A guide for BARCO xattach: |
| 3326 | * |
| 3327 | * For -cursor_rule 'b(0):%:t(1),t(1):%:b(0)' |
| 3328 | * down+M2S up+S2M |
| 3329 | * For -cursor_rule 'r(0):%:l(1),l(1):%:r(0)' |
| 3330 | * right+M2S left+S2M |
| 3331 | * |
| 3332 | * For -cursor_rule 't(0):%:b(1),b(1):%:t(0)' |
| 3333 | * up+M2S down+S2M |
| 3334 | * For -cursor_rule 'l(0):%:r(1),r(1):%:l(0)' |
| 3335 | * left+M2S right+S2M |
| 3336 | * For -cursor_rule 'l(0):%:r(1),r(1):%:l(0),r(0):%:l(1),l(1):%:r(0)' |
| 3337 | * left+M2S right+S2M (we used to do both 'right') |
| 3338 | */ |
| 3339 | |
| 3340 | if (!strcmp(flip, "M2S")) { |
| 3341 | if (!strcmp(dir, "up")) { |
| 3342 | pmove(shift, 0); /* go to top edge */ |
| 3343 | usleep(dt); |
| 3344 | pmove(shift+1, 0); /* move 1 for MotionNotify */ |
| 3345 | } else if (!strcmp(dir, "down")) { |
| 3346 | pmove(shift, dpy_y-1); /* go to bottom edge */ |
| 3347 | usleep(dt); |
| 3348 | pmove(shift+1, dpy_y-1); /* move 1 for MotionNotify */ |
| 3349 | } else if (!strcmp(dir, "left")) { |
| 3350 | pmove(0, shift); /* go to left edge */ |
| 3351 | usleep(dt); |
| 3352 | pmove(0, shift+1); /* move 1 for MotionNotify */ |
| 3353 | } else if (!strcmp(dir, "right")) { |
| 3354 | pmove(dpy_x-1, shift); /* go to right edge */ |
| 3355 | usleep(dt); |
| 3356 | pmove(dpy_x-1, shift+1); /* move 1 for Motion Notify */ |
| 3357 | } |
| 3358 | } else if (!strcmp(flip, "S2M")) { |
| 3359 | int dts = dt/2; |
| 3360 | if (!strcmp(dir, "up")) { |
| 3361 | pmove(shift, 2); /* Approach top edge in 3 moves. 1st move */ |
| 3362 | usleep(dts); |
| 3363 | pmove(shift, 1); /* 2nd move */ |
| 3364 | usleep(dts); |
| 3365 | pmove(shift, 0); /* 3rd move */ |
| 3366 | usleep(dts); |
| 3367 | pmove(shift+1, 0); /* move 1 for MotionNotify */ |
| 3368 | usleep(dts); |
| 3369 | pmove(shift+1, dpy_y-2); /* go to height-2 for extra pixel (slave y now == 0?) */ |
| 3370 | usleep(dts); |
| 3371 | pmove(shift, dpy_y-2); /* move 1 for MotionNotify */ |
| 3372 | usleep(dts); |
| 3373 | pmove(shift, 1); /* go to 1 to be sure slave y == 0 */ |
| 3374 | usleep(dts); |
| 3375 | pmove(shift+1, 1); /* move 1 for MotionNotify */ |
| 3376 | } else if (!strcmp(dir, "down")) { |
| 3377 | pmove(shift, dpy_y-3); /* Approach bottom edge in 3 moves. 1st move */ |
| 3378 | usleep(dts); |
| 3379 | pmove(shift, dpy_y-2); /* 2nd move */ |
| 3380 | usleep(dts); |
| 3381 | pmove(shift, dpy_y-1); /* 3rd move */ |
| 3382 | usleep(dts); |
| 3383 | pmove(shift+1, dpy_y-1); /* move 1 for MotionNotify */ |
| 3384 | usleep(dts); |
| 3385 | pmove(shift+1, 1); /* go to 1 for extra pixel (slave y now == dpy_y-1?) */ |
| 3386 | usleep(dts); |
| 3387 | pmove(shift, 1); /* move 1 for MotionNotify */ |
| 3388 | usleep(dts); |
| 3389 | pmove(shift, dpy_y-2); /* go to dpy_y-2 to be sure slave y == dpy_y-1 */ |
| 3390 | usleep(dts); |
| 3391 | pmove(shift+1, dpy_y-2); /* move 1 for MotionNotify */ |
| 3392 | } else if (!strcmp(dir, "left")) { |
| 3393 | pmove(2, shift); /* Approach left edge in 3 moves. 1st move */ |
| 3394 | usleep(dts); |
| 3395 | pmove(1, shift); /* 2nd move */ |
| 3396 | usleep(dts); |
| 3397 | pmove(0, shift); /* 3rd move */ |
| 3398 | usleep(dts); |
| 3399 | pmove(0, shift+1); /* move 1 for MotionNotify */ |
| 3400 | usleep(dts); |
| 3401 | pmove(dpy_x-2, shift+1); /* go to width-2 for extra pixel (slave x now == 0?) */ |
| 3402 | usleep(dts); |
| 3403 | pmove(dpy_x-2, shift); /* move 1 for MotionNotify */ |
| 3404 | usleep(dts); |
| 3405 | pmove(1, shift); /* go to 1 to be sure slave x == 0 */ |
| 3406 | usleep(dts); |
| 3407 | pmove(1, shift+1); /* move 1 for MotionNotify */ |
| 3408 | } else if (!strcmp(dir, "right")) { |
| 3409 | pmove(dpy_x-3, shift); /* Approach right edge in 3 moves. 1st move */ |
| 3410 | usleep(dts); |
| 3411 | pmove(dpy_x-2, shift); /* 2nd move */ |
| 3412 | usleep(dts); |
| 3413 | pmove(dpy_x-1, shift); /* 3rd move */ |
| 3414 | usleep(dts); |
| 3415 | pmove(dpy_x-1, shift+1); /* move 1 for MotionNotify */ |
| 3416 | usleep(dts); |
| 3417 | pmove(1, shift+1); /* go to 1 to extra pixel (slave x now == dpy_x-1?) */ |
| 3418 | usleep(dts); |
| 3419 | pmove(1, shift); /* move 1 for MotionNotify */ |
| 3420 | usleep(dts); |
| 3421 | pmove(dpy_x-2, shift); /* go to dpy_x-2 to be sure slave x == dpy_x-1 */ |
| 3422 | usleep(dts); |
| 3423 | pmove(dpy_x-2, shift+1); /* move 1 for MotionNotify */ |
| 3424 | } |
| 3425 | } |
| 3426 | |
| 3427 | usleep(dt); |
| 3428 | pmove(final_x, final_y); |
| 3429 | usleep(dt); |
| 3430 | |
| 3431 | if (extra_x >= 0 && extra_y >= 0) { |
| 3432 | pmove(extra_x, extra_y); |
| 3433 | usleep(dt); |
| 3434 | } |
| 3435 | |
| 3436 | strcpy(_bcx_res, "DONE"); |
| 3437 | |
| 3438 | if (grab_check) { |
| 3439 | char st[64]; |
| 3440 | |
| 3441 | usleep(3*dt); |
| 3442 | grab_state(&pg2, &kg2); |
| 3443 | |
| 3444 | if (!strcmp(flip, "M2S")) { |
| 3445 | if (pg2 != 1 || kg2 != 1) { |
| 3446 | rfbLog("bcx_xattach: M2S fini grab state incorrect: %d,%d\n", pg2, kg2); |
| 3447 | usleep(2*dt); |
| 3448 | grab_state(&pg2, &kg2); |
| 3449 | rfbLog("bcx_xattach: slept and retried, grab is now: %d,%d\n", pg2, kg2); |
| 3450 | } |
| 3451 | } else if (!strcmp(flip, "S2M")) { |
| 3452 | if (pg2 != 0 || kg2 != 0) { |
| 3453 | rfbLog("bcx_xattach: S2M fini grab state incorrect: %d,%d\n", pg2, kg2); |
| 3454 | usleep(2*dt); |
| 3455 | grab_state(&pg2, &kg2); |
| 3456 | rfbLog("bcx_xattach: slept and retried, grab is now: %d,%d\n", pg2, kg2); |
| 3457 | } |
| 3458 | } |
| 3459 | |
| 3460 | sprintf(st, ":%d,%d-%d,%d", pg1, kg1, pg2, kg2); |
| 3461 | |
| 3462 | if (getenv("GRAB_CHECK_LOOP")) { |
| 3463 | int i, n = atoi(getenv("GRAB_CHECK_LOOP")); |
| 3464 | rfbLog("grab st: %s\n", st); |
| 3465 | for (i=0; i < n; i++) { |
| 3466 | usleep(dt); |
| 3467 | grab_state(&pg2, &kg2); |
| 3468 | sprintf(st, ":%d,%d-%d,%d", pg1, kg1, pg2, kg2); |
| 3469 | rfbLog("grab st: %s\n", st); |
| 3470 | } |
| 3471 | } |
| 3472 | |
| 3473 | if (!strcmp(flip, "M2S")) { |
| 3474 | if (pg1 == 0 && kg1 == 0 && pg2 == 1 && kg2 == 1) { |
| 3475 | strcat(_bcx_res, ",GRAB_OK"); |
| 3476 | } else { |
| 3477 | rfbLog("bcx_xattach: M2S grab state incorrect: %d,%d -> %d,%d\n", pg1, kg1, pg2, kg2); |
| 3478 | strcat(_bcx_res, ",GRAB_FAIL"); |
| 3479 | if (pg2 == 1 && kg2 == 1) { |
| 3480 | strcat(_bcx_res, "_INIT"); |
| 3481 | } else if (pg1 == 0 && kg1 == 0) { |
| 3482 | strcat(_bcx_res, "_FINAL"); |
| 3483 | } |
| 3484 | strcat(_bcx_res, st); |
| 3485 | } |
| 3486 | } else if (!strcmp(flip, "S2M")) { |
| 3487 | if (pg1 == 1 && kg1 == 1 && pg2 == 0 && kg2 == 0) { |
| 3488 | strcat(_bcx_res, ",GRAB_OK"); |
| 3489 | } else { |
| 3490 | rfbLog("bcx_xattach: S2M grab state incorrect: %d,%d -> %d,%d\n", pg1, kg1, pg2, kg2); |
| 3491 | strcat(_bcx_res, ",GRAB_FAIL"); |
| 3492 | if (pg2 == 0 && kg2 == 0) { |
| 3493 | strcat(_bcx_res, "_INIT"); |
| 3494 | } else if (pg1 == 1 && kg1 == 1) { |
| 3495 | strcat(_bcx_res, "_FINAL"); |
| 3496 | } |
| 3497 | strcat(_bcx_res, st); |
| 3498 | } |
| 3499 | } |
| 3500 | } |
| 3501 | return strdup(_bcx_res); |
| 3502 | } |
| 3503 | |
| 3504 | int set_xprop(char *prop, Window win, char *value) { |
| 3505 | int rc = -1; |
| 3506 | #if !NO_X11 |
| 3507 | Atom aprop; |
| 3508 | |
| 3509 | RAWFB_RET(rc) |
| 3510 | |
| 3511 | if (!prop || !value) { |
| 3512 | return rc; |
| 3513 | } |
| 3514 | if (win == None) { |
| 3515 | win = rootwin; |
| 3516 | } |
| 3517 | aprop = XInternAtom(dpy, prop, False); |
| 3518 | if (aprop == None) { |
| 3519 | return rc; |
| 3520 | } |
| 3521 | rc = XChangeProperty(dpy, win, aprop, XA_STRING, 8, |
| 3522 | PropModeReplace, (unsigned char *)value, strlen(value)); |
| 3523 | return rc; |
| 3524 | #else |
| 3525 | RAWFB_RET(rc) |
| 3526 | if (!prop || !win || !value) {} |
| 3527 | return rc; |
| 3528 | #endif /* NO_X11 */ |
| 3529 | } |
| 3530 | |
| 3531 | char *get_xprop(char *prop, Window win) { |
| 3532 | #if NO_X11 |
| 3533 | RAWFB_RET(NULL) |
| 3534 | if (!prop || !win) {} |
| 3535 | return NULL; |
| 3536 | #else |
| 3537 | Atom type, aprop; |
| 3538 | int format, slen, dlen; |
| 3539 | unsigned long nitems = 0, bytes_after = 0; |
| 3540 | unsigned char* data = NULL; |
| 3541 | char get_str[VNC_CONNECT_MAX+1]; |
| 3542 | |
| 3543 | RAWFB_RET(NULL) |
| 3544 | |
| 3545 | if (prop == NULL || !strcmp(prop, "")) { |
| 3546 | return NULL; |
| 3547 | } |
| 3548 | if (win == None) { |
| 3549 | win = rootwin; |
| 3550 | } |
| 3551 | aprop = XInternAtom(dpy, prop, True); |
| 3552 | if (aprop == None) { |
| 3553 | return NULL; |
| 3554 | } |
| 3555 | |
| 3556 | get_str[0] = '\0'; |
| 3557 | slen = 0; |
| 3558 | |
| 3559 | /* read the property value into get_str: */ |
| 3560 | do { |
| 3561 | if (XGetWindowProperty(dpy, win, aprop, nitems/4, |
| 3562 | VNC_CONNECT_MAX/16, False, AnyPropertyType, &type, |
| 3563 | &format, &nitems, &bytes_after, &data) == Success) { |
| 3564 | |
| 3565 | dlen = nitems * (format/8); |
| 3566 | if (slen + dlen > VNC_CONNECT_MAX) { |
| 3567 | /* too big */ |
| 3568 | rfbLog("get_xprop: warning: truncating large '%s'" |
| 3569 | " string > %d bytes.\n", prop, VNC_CONNECT_MAX); |
| 3570 | XFree_wr(data); |
| 3571 | break; |
| 3572 | } |
| 3573 | memcpy(get_str+slen, data, dlen); |
| 3574 | slen += dlen; |
| 3575 | get_str[slen] = '\0'; |
| 3576 | XFree_wr(data); |
| 3577 | } |
| 3578 | } while (bytes_after > 0); |
| 3579 | |
| 3580 | get_str[VNC_CONNECT_MAX] = '\0'; |
| 3581 | rfbLog("get_prop: read: '%s' = '%s'\n", prop, get_str); |
| 3582 | |
| 3583 | return strdup(get_str); |
| 3584 | #endif /* NO_X11 */ |
| 3585 | } |
| 3586 | |
| 3587 | static char _win_fmt[1000]; |
| 3588 | |
| 3589 | static char *win_fmt(Window win, XWindowAttributes a) { |
| 3590 | memset(_win_fmt, 0, sizeof(_win_fmt)); |
| 3591 | sprintf(_win_fmt, "0x%lx:%dx%dx%d+%d+%d-map:%d-bw:%d-cl:%d-vis:%d-bs:%d/%d", |
| 3592 | win, a.width, a.height, a.depth, a.x, a.y, a.map_state, a.border_width, a.class, |
| 3593 | (int) ((a.visual)->visualid), a.backing_store, a.save_under); |
| 3594 | return _win_fmt; |
| 3595 | } |
| 3596 | |
| 3597 | char *wininfo(Window win, int show_children) { |
| 3598 | #if NO_X11 |
| 3599 | RAWFB_RET(NULL) |
| 3600 | if (!win || !show_children) {} |
| 3601 | return NULL; |
| 3602 | #else |
| 3603 | XWindowAttributes attr; |
| 3604 | int n, size = X11VNC_REMOTE_MAX; |
| 3605 | char get_str[X11VNC_REMOTE_MAX+1]; |
| 3606 | unsigned int nchildren; |
| 3607 | Window rr, pr, *children; |
| 3608 | |
| 3609 | RAWFB_RET(NULL) |
| 3610 | |
| 3611 | if (win == None) { |
| 3612 | return strdup("None"); |
| 3613 | } |
| 3614 | |
| 3615 | X_LOCK; |
| 3616 | if (!valid_window(win, &attr, 1)) { |
| 3617 | X_UNLOCK; |
| 3618 | return strdup("Invalid"); |
| 3619 | } |
| 3620 | get_str[0] = '\0'; |
| 3621 | |
| 3622 | if (show_children) { |
| 3623 | XQueryTree_wr(dpy, win, &rr, &pr, &children, &nchildren); |
| 3624 | } else { |
| 3625 | nchildren = 1; |
| 3626 | children = (Window *) calloc(2 * sizeof(Window), 1); |
| 3627 | children[0] = win; |
| 3628 | } |
| 3629 | for (n=0; n < (int) nchildren; n++) { |
| 3630 | char tmp[32]; |
| 3631 | char *str = "Invalid"; |
| 3632 | Window w = children[n]; |
| 3633 | if (valid_window(w, &attr, 1)) { |
| 3634 | if (!show_children) { |
| 3635 | str = win_fmt(w, attr); |
| 3636 | } else { |
| 3637 | sprintf(tmp, "0x%lx", w); |
| 3638 | str = tmp; |
| 3639 | } |
| 3640 | } |
| 3641 | if ((int) (strlen(get_str) + 1 + strlen(str)) >= size) { |
| 3642 | break; |
| 3643 | } |
| 3644 | if (n > 0) { |
| 3645 | strcat(get_str, ","); |
| 3646 | } |
| 3647 | strcat(get_str, str); |
| 3648 | } |
| 3649 | get_str[size] = '\0'; |
| 3650 | if (!show_children) { |
| 3651 | free(children); |
| 3652 | } else if (nchildren) { |
| 3653 | XFree_wr(children); |
| 3654 | } |
| 3655 | rfbLog("wininfo computed: %s\n", get_str); |
| 3656 | X_UNLOCK; |
| 3657 | |
| 3658 | return strdup(get_str); |
| 3659 | #endif /* NO_X11 */ |
| 3660 | } |
| 3661 | |
| 3662 | /* |
| 3663 | * check if client_connect has been set, if so make the reverse connections. |
| 3664 | */ |
| 3665 | static void send_client_connect(void) { |
| 3666 | if (client_connect != NULL) { |
| 3667 | char *str = client_connect; |
| 3668 | if (strstr(str, "cmd=") == str || strstr(str, "qry=") == str) { |
| 3669 | process_remote_cmd(client_connect, 0); |
| 3670 | } else if (strstr(str, "ans=") == str |
| 3671 | || strstr(str, "aro=") == str) { |
| 3672 | ; |
| 3673 | } else if (strstr(str, "ack=") == str) { |
| 3674 | ; |
| 3675 | } else { |
| 3676 | reverse_connect(client_connect); |
| 3677 | } |
| 3678 | free(client_connect); |
| 3679 | client_connect = NULL; |
| 3680 | } |
| 3681 | } |
| 3682 | |
| 3683 | /* |
| 3684 | * monitor the various input methods |
| 3685 | */ |
| 3686 | void check_connect_inputs(void) { |
| 3687 | |
| 3688 | if (unixpw_in_progress) return; |
| 3689 | |
| 3690 | /* flush any already set: */ |
| 3691 | send_client_connect(); |
| 3692 | |
| 3693 | /* connect file: */ |
| 3694 | if (client_connect_file != NULL) { |
| 3695 | check_connect_file(client_connect_file); |
| 3696 | } |
| 3697 | send_client_connect(); |
| 3698 | |
| 3699 | /* VNC_CONNECT property (vncconnect program) */ |
| 3700 | if (vnc_connect && *vnc_connect_str != '\0') { |
| 3701 | client_connect = strdup(vnc_connect_str); |
| 3702 | vnc_connect_str[0] = '\0'; |
| 3703 | } |
| 3704 | send_client_connect(); |
| 3705 | |
| 3706 | /* X11VNC_REMOTE property */ |
| 3707 | if (vnc_connect && *x11vnc_remote_str != '\0') { |
| 3708 | client_connect = strdup(x11vnc_remote_str); |
| 3709 | x11vnc_remote_str[0] = '\0'; |
| 3710 | } |
| 3711 | send_client_connect(); |
| 3712 | } |
| 3713 | |
| 3714 | void check_gui_inputs(void) { |
| 3715 | int i, gnmax = 0, n = 0, nfds; |
| 3716 | int socks[ICON_MODE_SOCKS]; |
| 3717 | fd_set fds; |
| 3718 | struct timeval tv; |
| 3719 | char buf[X11VNC_REMOTE_MAX+1]; |
| 3720 | ssize_t nbytes; |
| 3721 | |
| 3722 | if (unixpw_in_progress) return; |
| 3723 | |
| 3724 | for (i=0; i<ICON_MODE_SOCKS; i++) { |
| 3725 | if (icon_mode_socks[i] >= 0) { |
| 3726 | socks[n++] = i; |
| 3727 | if (icon_mode_socks[i] > gnmax) { |
| 3728 | gnmax = icon_mode_socks[i]; |
| 3729 | } |
| 3730 | } |
| 3731 | } |
| 3732 | |
| 3733 | if (! n) { |
| 3734 | return; |
| 3735 | } |
| 3736 | |
| 3737 | FD_ZERO(&fds); |
| 3738 | for (i=0; i<n; i++) { |
| 3739 | FD_SET(icon_mode_socks[socks[i]], &fds); |
| 3740 | } |
| 3741 | tv.tv_sec = 0; |
| 3742 | tv.tv_usec = 0; |
| 3743 | |
| 3744 | nfds = select(gnmax+1, &fds, NULL, NULL, &tv); |
| 3745 | if (nfds <= 0) { |
| 3746 | return; |
| 3747 | } |
| 3748 | |
| 3749 | for (i=0; i<n; i++) { |
| 3750 | int k, fd = icon_mode_socks[socks[i]]; |
| 3751 | char *p; |
| 3752 | char **list; |
| 3753 | int lind; |
| 3754 | |
| 3755 | if (! FD_ISSET(fd, &fds)) { |
| 3756 | continue; |
| 3757 | } |
| 3758 | for (k=0; k<=X11VNC_REMOTE_MAX; k++) { |
| 3759 | buf[k] = '\0'; |
| 3760 | } |
| 3761 | nbytes = read(fd, buf, X11VNC_REMOTE_MAX); |
| 3762 | if (nbytes <= 0) { |
| 3763 | close(fd); |
| 3764 | icon_mode_socks[socks[i]] = -1; |
| 3765 | continue; |
| 3766 | } |
| 3767 | |
| 3768 | list = (char **) calloc((strlen(buf)+2) * sizeof(char *), 1); |
| 3769 | |
| 3770 | lind = 0; |
| 3771 | p = strtok(buf, "\r\n"); |
| 3772 | while (p) { |
| 3773 | list[lind++] = strdup(p); |
| 3774 | p = strtok(NULL, "\r\n"); |
| 3775 | } |
| 3776 | |
| 3777 | lind = 0; |
| 3778 | while (list[lind] != NULL) { |
| 3779 | p = list[lind++]; |
| 3780 | if (strstr(p, "cmd=") == p || |
| 3781 | strstr(p, "qry=") == p) { |
| 3782 | char *str = process_remote_cmd(p, 1); |
| 3783 | if (! str) { |
| 3784 | str = strdup(""); |
| 3785 | } |
| 3786 | nbytes = write(fd, str, strlen(str)); |
| 3787 | write(fd, "\n", 1); |
| 3788 | free(str); |
| 3789 | if (nbytes < 0) { |
| 3790 | close(fd); |
| 3791 | icon_mode_socks[socks[i]] = -1; |
| 3792 | break; |
| 3793 | } |
| 3794 | } |
| 3795 | } |
| 3796 | |
| 3797 | lind = 0; |
| 3798 | while (list[lind] != NULL) { |
| 3799 | p = list[lind++]; |
| 3800 | if (p) free(p); |
| 3801 | } |
| 3802 | free(list); |
| 3803 | } |
| 3804 | } |
| 3805 | |
| 3806 | rfbClientPtr create_new_client(int sock, int start_thread) { |
| 3807 | rfbClientPtr cl; |
| 3808 | |
| 3809 | if (!screen) { |
| 3810 | return NULL; |
| 3811 | } |
| 3812 | |
| 3813 | cl = rfbNewClient(screen, sock); |
| 3814 | |
| 3815 | if (cl == NULL) { |
| 3816 | return NULL; |
| 3817 | } |
| 3818 | if (use_threads) { |
| 3819 | cl->onHold = FALSE; |
| 3820 | if (start_thread) { |
| 3821 | rfbStartOnHoldClient(cl); |
| 3822 | } |
| 3823 | } |
| 3824 | return cl; |
| 3825 | } |
| 3826 | |
| 3827 | static int turn_off_truecolor = 0; |
| 3828 | |
| 3829 | static void turn_off_truecolor_ad(rfbClientPtr client) { |
| 3830 | if (client) {} |
| 3831 | if (turn_off_truecolor) { |
| 3832 | rfbLog("turning off truecolor advertising.\n"); |
| 3833 | /* mutex */ |
| 3834 | screen->serverFormat.trueColour = FALSE; |
| 3835 | screen->displayHook = NULL; |
| 3836 | screen->serverFormat.redShift = 0; |
| 3837 | screen->serverFormat.greenShift = 0; |
| 3838 | screen->serverFormat.blueShift = 0; |
| 3839 | screen->serverFormat.redMax = 0; |
| 3840 | screen->serverFormat.greenMax = 0; |
| 3841 | screen->serverFormat.blueMax = 0; |
| 3842 | turn_off_truecolor = 0; |
| 3843 | } |
| 3844 | } |
| 3845 | |
| 3846 | /* |
| 3847 | * some overrides for the local console text chat. |
| 3848 | * could be useful in general for local helpers. |
| 3849 | */ |
| 3850 | |
| 3851 | rfbBool password_check_chat_helper(rfbClientPtr cl, const char* response, int len) { |
| 3852 | if (response || len) {} |
| 3853 | if (cl != chat_window_client) { |
| 3854 | rfbLog("invalid client during chat_helper login\n"); |
| 3855 | return FALSE; |
| 3856 | } else { |
| 3857 | if (!cl->host) { |
| 3858 | rfbLog("empty cl->host during chat_helper login\n"); |
| 3859 | return FALSE; |
| 3860 | } |
| 3861 | if (strcmp(cl->host, "127.0.0.1")) { |
| 3862 | rfbLog("invalid cl->host during chat_helper login: %s\n", cl->host); |
| 3863 | return FALSE; |
| 3864 | } |
| 3865 | rfbLog("chat_helper login accepted\n"); |
| 3866 | return TRUE; |
| 3867 | } |
| 3868 | } |
| 3869 | |
| 3870 | enum rfbNewClientAction new_client_chat_helper(rfbClientPtr client) { |
| 3871 | if (client) {} |
| 3872 | client->clientGoneHook = client_gone_chat_helper; |
| 3873 | rfbLog("new chat helper\n"); |
| 3874 | return(RFB_CLIENT_ACCEPT); |
| 3875 | } |
| 3876 | |
| 3877 | void client_gone_chat_helper(rfbClientPtr client) { |
| 3878 | if (client) {} |
| 3879 | rfbLog("finished chat helper\n"); |
| 3880 | chat_window_client = NULL; |
| 3881 | } |
| 3882 | |
| 3883 | void client_set_net(rfbClientPtr client) { |
| 3884 | ClientData *cd; |
| 3885 | if (client == NULL) { |
| 3886 | return; |
| 3887 | } |
| 3888 | cd = (ClientData *) client->clientData; |
| 3889 | if (cd == NULL) { |
| 3890 | return; |
| 3891 | } |
| 3892 | if (cd->client_port < 0) { |
| 3893 | double dt = dnow(); |
| 3894 | cd->client_port = get_remote_port(client->sock); |
| 3895 | cd->server_port = get_local_port(client->sock); |
| 3896 | cd->server_ip = get_local_host(client->sock); |
| 3897 | cd->hostname = ip2host(client->host); |
| 3898 | rfbLog("client_set_net: %s %.4f\n", client->host, dnow() - dt); |
| 3899 | } |
| 3900 | } |
| 3901 | /* |
| 3902 | * libvncserver callback for when a new client connects |
| 3903 | */ |
| 3904 | enum rfbNewClientAction new_client(rfbClientPtr client) { |
| 3905 | ClientData *cd; |
| 3906 | |
| 3907 | CLIENT_LOCK; |
| 3908 | |
| 3909 | last_event = last_input = time(NULL); |
| 3910 | |
| 3911 | latest_client = client; |
| 3912 | |
| 3913 | if (inetd) { |
| 3914 | /* |
| 3915 | * Set this so we exit as soon as connection closes, |
| 3916 | * otherwise client_gone is only called after RFB_CLIENT_ACCEPT |
| 3917 | */ |
| 3918 | if (inetd_client == NULL) { |
| 3919 | inetd_client = client; |
| 3920 | client->clientGoneHook = client_gone; |
| 3921 | } |
| 3922 | } |
| 3923 | |
| 3924 | clients_served++; |
| 3925 | |
| 3926 | if (use_openssl || use_stunnel) { |
| 3927 | if (! ssl_initialized) { |
| 3928 | rfbLog("denying additional client: %s ssl not setup" |
| 3929 | " yet.\n", client->host); |
| 3930 | CLIENT_UNLOCK; |
| 3931 | return(RFB_CLIENT_REFUSE); |
| 3932 | } |
| 3933 | } |
| 3934 | if (unixpw_in_progress) { |
| 3935 | rfbLog("denying additional client: %s during -unixpw login.\n", |
| 3936 | client->host); |
| 3937 | CLIENT_UNLOCK; |
| 3938 | return(RFB_CLIENT_REFUSE); |
| 3939 | } |
| 3940 | if (connect_once) { |
| 3941 | if (screen->dontDisconnect && screen->neverShared) { |
| 3942 | if (! shared && accepted_client) { |
| 3943 | rfbLog("denying additional client: %s:%d\n", |
| 3944 | client->host, get_remote_port(client->sock)); |
| 3945 | CLIENT_UNLOCK; |
| 3946 | return(RFB_CLIENT_REFUSE); |
| 3947 | } |
| 3948 | } |
| 3949 | } |
| 3950 | |
| 3951 | if (ipv6_client_ip_str != NULL) { |
| 3952 | rfbLog("renaming client->host from '%s' to '%s'\n", |
| 3953 | client->host ? client->host : "", ipv6_client_ip_str); |
| 3954 | if (client->host) { |
| 3955 | free(client->host); |
| 3956 | } |
| 3957 | client->host = strdup(ipv6_client_ip_str); |
| 3958 | } |
| 3959 | |
| 3960 | if (! check_access(client->host)) { |
| 3961 | rfbLog("denying client: %s does not match %s\n", client->host, |
| 3962 | allow_list ? allow_list : "(null)" ); |
| 3963 | CLIENT_UNLOCK; |
| 3964 | return(RFB_CLIENT_REFUSE); |
| 3965 | } |
| 3966 | |
| 3967 | client->clientData = (void *) calloc(sizeof(ClientData), 1); |
| 3968 | cd = (ClientData *) client->clientData; |
| 3969 | |
| 3970 | /* see client_set_net() we delay the DNS lookups during handshake */ |
| 3971 | cd->client_port = -1; |
| 3972 | cd->username = strdup(""); |
| 3973 | cd->unixname = strdup(""); |
| 3974 | |
| 3975 | cd->input[0] = '-'; |
| 3976 | cd->login_viewonly = -1; |
| 3977 | cd->login_time = time(NULL); |
| 3978 | cd->ssl_helper_pid = 0; |
| 3979 | |
| 3980 | if (use_openssl && openssl_last_helper_pid) { |
| 3981 | cd->ssl_helper_pid = openssl_last_helper_pid; |
| 3982 | openssl_last_helper_pid = 0; |
| 3983 | } |
| 3984 | |
| 3985 | if (! accept_client(client)) { |
| 3986 | rfbLog("denying client: %s local user rejected connection.\n", |
| 3987 | client->host); |
| 3988 | rfbLog("denying client: accept_cmd=\"%s\"\n", |
| 3989 | accept_cmd ? accept_cmd : "(null)" ); |
| 3990 | |
| 3991 | free_client_data(client); |
| 3992 | |
| 3993 | CLIENT_UNLOCK; |
| 3994 | return(RFB_CLIENT_REFUSE); |
| 3995 | } |
| 3996 | |
| 3997 | /* We will RFB_CLIENT_ACCEPT or RFB_CLIENT_ON_HOLD from here on. */ |
| 3998 | |
| 3999 | if (passwdfile) { |
| 4000 | if (strstr(passwdfile, "read:") == passwdfile || |
| 4001 | strstr(passwdfile, "cmd:") == passwdfile) { |
| 4002 | if (read_passwds(passwdfile)) { |
| 4003 | install_passwds(); |
| 4004 | } else { |
| 4005 | rfbLog("problem reading: %s\n", passwdfile); |
| 4006 | clean_up_exit(1); |
| 4007 | } |
| 4008 | } else if (strstr(passwdfile, "custom:") == passwdfile) { |
| 4009 | if (screen) { |
| 4010 | /* mutex */ |
| 4011 | screen->passwordCheck = custom_passwd_check; |
| 4012 | } |
| 4013 | } |
| 4014 | } |
| 4015 | |
| 4016 | cd->uid = clients_served; |
| 4017 | |
| 4018 | client->clientGoneHook = client_gone; |
| 4019 | |
| 4020 | if (client_count) { |
| 4021 | speeds_net_rate_measured = 0; |
| 4022 | speeds_net_latency_measured = 0; |
| 4023 | } |
| 4024 | client_count++; |
| 4025 | |
| 4026 | last_keyboard_input = last_pointer_input = time(NULL); |
| 4027 | |
| 4028 | if (no_autorepeat && client_count == 1 && ! view_only) { |
| 4029 | /* |
| 4030 | * first client, turn off X server autorepeat |
| 4031 | * XXX handle dynamic change of view_only and per-client. |
| 4032 | */ |
| 4033 | autorepeat(0, 0); |
| 4034 | } |
| 4035 | #ifdef MACOSX |
| 4036 | if (macosx_console && client_count == 1) { |
| 4037 | macosxCG_refresh_callback_on(); |
| 4038 | } |
| 4039 | #endif |
| 4040 | if (use_solid_bg && client_count == 1) { |
| 4041 | solid_bg(0); |
| 4042 | } |
| 4043 | |
| 4044 | if (pad_geometry) { |
| 4045 | install_padded_fb(pad_geometry); |
| 4046 | } |
| 4047 | |
| 4048 | cd->timer = last_new_client = dnow(); |
| 4049 | cd->send_cmp_rate = 0.0; |
| 4050 | cd->send_raw_rate = 0.0; |
| 4051 | cd->latency = 0.0; |
| 4052 | cd->cmp_bytes_sent = 0; |
| 4053 | cd->raw_bytes_sent = 0; |
| 4054 | |
| 4055 | accepted_client++; |
| 4056 | rfbLog("incr accepted_client=%d for %s:%d sock=%d\n", accepted_client, |
| 4057 | client->host, get_remote_port(client->sock), client->sock); |
| 4058 | last_client = time(NULL); |
| 4059 | |
| 4060 | if (ncache) { |
| 4061 | check_ncache(1, 0); |
| 4062 | } |
| 4063 | |
| 4064 | if (advertise_truecolor && indexed_color) { |
| 4065 | int rs = 0, gs = 2, bs = 4; |
| 4066 | int rm = 3, gm = 3, bm = 3; |
| 4067 | if (bpp >= 24) { |
| 4068 | rs = 0, gs = 8, bs = 16; |
| 4069 | rm = 255, gm = 255, bm = 255; |
| 4070 | } else if (bpp >= 16) { |
| 4071 | rs = 0, gs = 5, bs = 10; |
| 4072 | rm = 31, gm = 31, bm = 31; |
| 4073 | } |
| 4074 | rfbLog("advertising truecolor.\n"); |
| 4075 | if (getenv("ADVERT_BMSHIFT")) { |
| 4076 | bm--; |
| 4077 | } |
| 4078 | |
| 4079 | if (use_threads) LOCK(client->updateMutex); |
| 4080 | |
| 4081 | client->format.trueColour = TRUE; |
| 4082 | client->format.redShift = rs; |
| 4083 | client->format.greenShift = gs; |
| 4084 | client->format.blueShift = bs; |
| 4085 | client->format.redMax = rm; |
| 4086 | client->format.greenMax = gm; |
| 4087 | client->format.blueMax = bm; |
| 4088 | |
| 4089 | if (use_threads) UNLOCK(client->updateMutex); |
| 4090 | |
| 4091 | rfbSetTranslateFunction(client); |
| 4092 | |
| 4093 | /* mutex */ |
| 4094 | screen->serverFormat.trueColour = TRUE; |
| 4095 | screen->serverFormat.redShift = rs; |
| 4096 | screen->serverFormat.greenShift = gs; |
| 4097 | screen->serverFormat.blueShift = bs; |
| 4098 | screen->serverFormat.redMax = rm; |
| 4099 | screen->serverFormat.greenMax = gm; |
| 4100 | screen->serverFormat.blueMax = bm; |
| 4101 | screen->displayHook = turn_off_truecolor_ad; |
| 4102 | |
| 4103 | turn_off_truecolor = 1; |
| 4104 | } |
| 4105 | |
| 4106 | if (unixpw) { |
| 4107 | unixpw_in_progress = 1; |
| 4108 | unixpw_client = client; |
| 4109 | unixpw_login_viewonly = 0; |
| 4110 | |
| 4111 | unixpw_file_xfer_save = screen->permitFileTransfer; |
| 4112 | screen->permitFileTransfer = FALSE; |
| 4113 | unixpw_tightvnc_xfer_save = tightfilexfer; |
| 4114 | tightfilexfer = 0; |
| 4115 | #ifdef LIBVNCSERVER_WITH_TIGHTVNC_FILETRANSFER |
| 4116 | rfbLog("rfbUnregisterTightVNCFileTransferExtension: 1\n"); |
| 4117 | rfbUnregisterTightVNCFileTransferExtension(); |
| 4118 | #endif |
| 4119 | |
| 4120 | if (client->viewOnly) { |
| 4121 | unixpw_login_viewonly = 1; |
| 4122 | client->viewOnly = FALSE; |
| 4123 | } |
| 4124 | unixpw_last_try_time = time(NULL) + 10; |
| 4125 | |
| 4126 | unixpw_screen(1); |
| 4127 | unixpw_keystroke(0, 0, 1); |
| 4128 | |
| 4129 | if (!unixpw_in_rfbPE) { |
| 4130 | rfbLog("new client: %s in non-unixpw_in_rfbPE.\n", |
| 4131 | client->host); |
| 4132 | } |
| 4133 | CLIENT_UNLOCK; |
| 4134 | if (!use_threads) { |
| 4135 | /* always put client on hold even if unixpw_in_rfbPE is true */ |
| 4136 | return(RFB_CLIENT_ON_HOLD); |
| 4137 | } else { |
| 4138 | /* unixpw threads is still in testing mode, disabled by default. See UNIXPW_THREADS */ |
| 4139 | return(RFB_CLIENT_ACCEPT); |
| 4140 | } |
| 4141 | } |
| 4142 | |
| 4143 | CLIENT_UNLOCK; |
| 4144 | return(RFB_CLIENT_ACCEPT); |
| 4145 | } |
| 4146 | |
| 4147 | void start_client_info_sock(char *host_port_cookie) { |
| 4148 | char *host = NULL, *cookie = NULL, *p; |
| 4149 | char *str = strdup(host_port_cookie); |
| 4150 | int i, port, sock, next = -1; |
| 4151 | static time_t start_time[ICON_MODE_SOCKS]; |
| 4152 | time_t oldest = 0; |
| 4153 | int db = 0; |
| 4154 | |
| 4155 | port = -1; |
| 4156 | |
| 4157 | for (i = 0; i < ICON_MODE_SOCKS; i++) { |
| 4158 | if (icon_mode_socks[i] < 0) { |
| 4159 | next = i; |
| 4160 | break; |
| 4161 | } |
| 4162 | if (oldest == 0 || start_time[i] < oldest) { |
| 4163 | next = i; |
| 4164 | oldest = start_time[i]; |
| 4165 | } |
| 4166 | } |
| 4167 | |
| 4168 | p = strtok(str, ":"); |
| 4169 | i = 0; |
| 4170 | while (p) { |
| 4171 | if (i == 0) { |
| 4172 | host = strdup(p); |
| 4173 | } else if (i == 1) { |
| 4174 | port = atoi(p); |
| 4175 | } else if (i == 2) { |
| 4176 | cookie = strdup(p); |
| 4177 | } |
| 4178 | i++; |
| 4179 | p = strtok(NULL, ":"); |
| 4180 | } |
| 4181 | free(str); |
| 4182 | |
| 4183 | if (db) fprintf(stderr, "%s/%d/%s next=%d\n", host, port, cookie, next); |
| 4184 | |
| 4185 | if (host && port && cookie) { |
| 4186 | if (*host == '\0') { |
| 4187 | free(host); |
| 4188 | host = strdup("localhost"); |
| 4189 | } |
| 4190 | sock = connect_tcp(host, port); |
| 4191 | if (sock < 0) { |
| 4192 | usleep(200 * 1000); |
| 4193 | sock = connect_tcp(host, port); |
| 4194 | } |
| 4195 | if (sock >= 0) { |
| 4196 | char *lst = list_clients(); |
| 4197 | icon_mode_socks[next] = sock; |
| 4198 | start_time[next] = time(NULL); |
| 4199 | write(sock, "COOKIE:", strlen("COOKIE:")); |
| 4200 | write(sock, cookie, strlen(cookie)); |
| 4201 | write(sock, "\n", strlen("\n")); |
| 4202 | write(sock, "none\n", strlen("none\n")); |
| 4203 | write(sock, "none\n", strlen("none\n")); |
| 4204 | write(sock, lst, strlen(lst)); |
| 4205 | write(sock, "\n", strlen("\n")); |
| 4206 | if (db) { |
| 4207 | fprintf(stderr, "list: %s\n", lst); |
| 4208 | } |
| 4209 | free(lst); |
| 4210 | rfbLog("client_info_sock to: %s:%d\n", host, port); |
| 4211 | } else { |
| 4212 | rfbLog("failed client_info_sock: %s:%d\n", host, port); |
| 4213 | } |
| 4214 | } else { |
| 4215 | rfbLog("malformed client_info_sock: %s\n", host_port_cookie); |
| 4216 | } |
| 4217 | |
| 4218 | if (host) free(host); |
| 4219 | if (cookie) free(cookie); |
| 4220 | } |
| 4221 | |
| 4222 | void send_client_info(char *str) { |
| 4223 | int i; |
| 4224 | static char *pstr = NULL; |
| 4225 | static int len = 128; |
| 4226 | |
| 4227 | if (!str || strlen(str) == 0) { |
| 4228 | return; |
| 4229 | } |
| 4230 | |
| 4231 | if (!pstr) { |
| 4232 | pstr = (char *)malloc(len); |
| 4233 | } |
| 4234 | if (strlen(str) + 2 > (size_t) len) { |
| 4235 | free(pstr); |
| 4236 | len *= 2; |
| 4237 | pstr = (char *)malloc(len); |
| 4238 | } |
| 4239 | strcpy(pstr, str); |
| 4240 | strcat(pstr, "\n"); |
| 4241 | |
| 4242 | if (icon_mode_fh) { |
| 4243 | if (0) fprintf(icon_mode_fh, "\n"); |
| 4244 | fprintf(icon_mode_fh, "%s", pstr); |
| 4245 | fflush(icon_mode_fh); |
| 4246 | } |
| 4247 | |
| 4248 | for (i=0; i<ICON_MODE_SOCKS; i++) { |
| 4249 | int len, n, sock = icon_mode_socks[i]; |
| 4250 | char *buf = pstr; |
| 4251 | |
| 4252 | if (sock < 0) { |
| 4253 | continue; |
| 4254 | } |
| 4255 | |
| 4256 | len = strlen(pstr); |
| 4257 | while (len > 0) { |
| 4258 | if (0) write(sock, "\n", 1); |
| 4259 | n = write(sock, buf, len); |
| 4260 | if (n > 0) { |
| 4261 | buf += n; |
| 4262 | len -= n; |
| 4263 | continue; |
| 4264 | } |
| 4265 | |
| 4266 | if (n < 0 && errno == EINTR) { |
| 4267 | continue; |
| 4268 | } |
| 4269 | close(sock); |
| 4270 | icon_mode_socks[i] = -1; |
| 4271 | break; |
| 4272 | } |
| 4273 | } |
| 4274 | } |
| 4275 | |
| 4276 | void adjust_grabs(int grab, int quiet) { |
| 4277 | RAWFB_RET_VOID |
| 4278 | #if NO_X11 |
| 4279 | if (!grab || !quiet) {} |
| 4280 | return; |
| 4281 | #else |
| 4282 | /* n.b. caller decides to X_LOCK or not. */ |
| 4283 | if (grab) { |
| 4284 | if (grab_kbd) { |
| 4285 | if (! quiet) { |
| 4286 | rfbLog("grabbing keyboard with XGrabKeyboard\n"); |
| 4287 | } |
| 4288 | XGrabKeyboard(dpy, window, False, GrabModeAsync, |
| 4289 | GrabModeAsync, CurrentTime); |
| 4290 | } |
| 4291 | if (grab_ptr) { |
| 4292 | if (! quiet) { |
| 4293 | rfbLog("grabbing pointer with XGrabPointer\n"); |
| 4294 | } |
| 4295 | XGrabPointer(dpy, window, False, 0, GrabModeAsync, |
| 4296 | GrabModeAsync, None, None, CurrentTime); |
| 4297 | } |
| 4298 | } else { |
| 4299 | if (grab_kbd) { |
| 4300 | if (! quiet) { |
| 4301 | rfbLog("ungrabbing keyboard with XUngrabKeyboard\n"); |
| 4302 | } |
| 4303 | XUngrabKeyboard(dpy, CurrentTime); |
| 4304 | } |
| 4305 | if (grab_ptr) { |
| 4306 | if (! quiet) { |
| 4307 | rfbLog("ungrabbing pointer with XUngrabPointer\n"); |
| 4308 | } |
| 4309 | XUngrabPointer(dpy, CurrentTime); |
| 4310 | } |
| 4311 | } |
| 4312 | #endif /* NO_X11 */ |
| 4313 | } |
| 4314 | |
| 4315 | void check_new_clients(void) { |
| 4316 | static int last_count = -1; |
| 4317 | rfbClientIteratorPtr iter; |
| 4318 | rfbClientPtr cl; |
| 4319 | int i, send_info = 0; |
| 4320 | int run_after_accept = 0; |
| 4321 | |
| 4322 | if (unixpw_in_progress) { |
| 4323 | static double lping = 0.0; |
| 4324 | if (lping < dnow() + 5) { |
| 4325 | mark_rect_as_modified(0, 0, 1, 1, 1); |
| 4326 | lping = dnow(); |
| 4327 | } |
| 4328 | if (unixpw_client && unixpw_client->viewOnly) { |
| 4329 | unixpw_login_viewonly = 1; |
| 4330 | unixpw_client->viewOnly = FALSE; |
| 4331 | } |
| 4332 | if (time(NULL) > unixpw_last_try_time + 45) { |
| 4333 | rfbLog("unixpw_deny: timed out waiting for reply.\n"); |
| 4334 | unixpw_deny(); |
| 4335 | } |
| 4336 | return; |
| 4337 | } |
| 4338 | |
| 4339 | if (grab_always) { |
| 4340 | ; |
| 4341 | } else if (grab_kbd || grab_ptr) { |
| 4342 | static double last_force = 0.0; |
| 4343 | if (client_count != last_count || dnow() > last_force + 0.25) { |
| 4344 | int q = (client_count == last_count); |
| 4345 | last_force = dnow(); |
| 4346 | X_LOCK; |
| 4347 | if (client_count) { |
| 4348 | adjust_grabs(1, q); |
| 4349 | } else { |
| 4350 | adjust_grabs(0, q); |
| 4351 | } |
| 4352 | X_UNLOCK; |
| 4353 | } |
| 4354 | } |
| 4355 | |
| 4356 | if (last_count == -1) { |
| 4357 | last_count = 0; |
| 4358 | } else if (client_count == last_count) { |
| 4359 | return; |
| 4360 | } |
| 4361 | |
| 4362 | if (! all_clients_initialized()) { |
| 4363 | return; |
| 4364 | } |
| 4365 | |
| 4366 | if (client_count > last_count) { |
| 4367 | if (afteraccept_cmd != NULL && afteraccept_cmd[0] != '\0') { |
| 4368 | run_after_accept = 1; |
| 4369 | } |
| 4370 | } |
| 4371 | |
| 4372 | last_count = client_count; |
| 4373 | |
| 4374 | if (! screen) { |
| 4375 | return; |
| 4376 | } |
| 4377 | |
| 4378 | if (! client_count) { |
| 4379 | send_client_info("clients:none"); |
| 4380 | return; |
| 4381 | } |
| 4382 | |
| 4383 | iter = rfbGetClientIterator(screen); |
| 4384 | while( (cl = rfbClientIteratorNext(iter)) ) { |
| 4385 | ClientData *cd = (ClientData *) cl->clientData; |
| 4386 | char *s; |
| 4387 | |
| 4388 | client_set_net(cl); |
| 4389 | if (! cd) { |
| 4390 | continue; |
| 4391 | } |
| 4392 | |
| 4393 | if (cd->login_viewonly < 0) { |
| 4394 | /* this is a general trigger to initialize things */ |
| 4395 | if (cl->viewOnly) { |
| 4396 | cd->login_viewonly = 1; |
| 4397 | s = allowed_input_view_only; |
| 4398 | if (s && cd->input[0] == '-') { |
| 4399 | cl->viewOnly = FALSE; |
| 4400 | cd->input[0] = '\0'; |
| 4401 | strncpy(cd->input, s, CILEN); |
| 4402 | } |
| 4403 | } else { |
| 4404 | cd->login_viewonly = 0; |
| 4405 | s = allowed_input_normal; |
| 4406 | if (s && cd->input[0] == '-') { |
| 4407 | cd->input[0] = '\0'; |
| 4408 | strncpy(cd->input, s, CILEN); |
| 4409 | } |
| 4410 | } |
| 4411 | if (run_after_accept) { |
| 4412 | run_user_command(afteraccept_cmd, cl, |
| 4413 | "afteraccept", NULL, 0, NULL); |
| 4414 | } |
| 4415 | } |
| 4416 | } |
| 4417 | rfbReleaseClientIterator(iter); |
| 4418 | |
| 4419 | if (icon_mode_fh) { |
| 4420 | send_info++; |
| 4421 | } |
| 4422 | for (i = 0; i < ICON_MODE_SOCKS; i++) { |
| 4423 | if (send_info || icon_mode_socks[i] >= 0) { |
| 4424 | send_info++; |
| 4425 | break; |
| 4426 | } |
| 4427 | } |
| 4428 | if (send_info) { |
| 4429 | char *str, *s = list_clients(); |
| 4430 | str = (char *) malloc(strlen("clients:") + strlen(s) + 1); |
| 4431 | sprintf(str, "clients:%s", s); |
| 4432 | send_client_info(str); |
| 4433 | free(str); |
| 4434 | free(s); |
| 4435 | } |
| 4436 | } |
| 4437 | |