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-rw-r--r--x11vnc/util.c787
1 files changed, 0 insertions, 787 deletions
diff --git a/x11vnc/util.c b/x11vnc/util.c
deleted file mode 100644
index 80b1607..0000000
--- a/x11vnc/util.c
+++ /dev/null
@@ -1,787 +0,0 @@
-/*
- Copyright (C) 2002-2010 Karl J. Runge <runge@karlrunge.com>
- All rights reserved.
-
-This file is part of x11vnc.
-
-x11vnc is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2 of the License, or (at
-your option) any later version.
-
-x11vnc is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with x11vnc; if not, write to the Free Software
-Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA
-or see <http://www.gnu.org/licenses/>.
-
-In addition, as a special exception, Karl J. Runge
-gives permission to link the code of its release of x11vnc with the
-OpenSSL project's "OpenSSL" library (or with modified versions of it
-that use the same license as the "OpenSSL" library), and distribute
-the linked executables. You must obey the GNU General Public License
-in all respects for all of the code used other than "OpenSSL". If you
-modify this file, you may extend this exception to your version of the
-file, but you are not obligated to do so. If you do not wish to do
-so, delete this exception statement from your version.
-*/
-
-/* -- util.c -- */
-
-#include "x11vnc.h"
-#include "cleanup.h"
-#include "win_utils.h"
-#include "unixpw.h"
-#include "connections.h"
-
-struct timeval _mysleep;
-
-/* this is only for debugging mutexes. see util.h */
-int hxl = 0;
-
-#ifdef LIBVNCSERVER_HAVE_LIBPTHREAD
-MUTEX(x11Mutex);
-MUTEX(scrollMutex);
-#endif
-
-int nfix(int i, int n);
-int nmin(int n, int m);
-int nmax(int n, int m);
-int nabs(int n);
-double dabs(double x);
-void lowercase(char *str);
-void uppercase(char *str);
-char *lblanks(char *str);
-void strzero(char *str);
-int scan_hexdec(char *str, unsigned long *num);
-int parse_geom(char *str, int *wp, int *hp, int *xp, int *yp, int W, int H);
-void set_env(char *name, char *value);
-char *bitprint(unsigned int st, int nbits);
-char *get_user_name(void);
-char *get_home_dir(void);
-char *get_shell(void);
-char *this_host(void);
-
-int match_str_list(char *str, char **list);
-char **create_str_list(char *cslist);
-
-double dtime(double *);
-double dtime0(double *);
-double dnow(void);
-double dnowx(void);
-double rnow(void);
-double rfac(void);
-
-int rfbPE(long usec);
-void rfbCFD(long usec);
-
-double rect_overlap(int x1, int y1, int x2, int y2, int X1, int Y1,
- int X2, int Y2);
-
-char *choose_title(char *display);
-
-
-/*
- * routine to keep 0 <= i < n
- */
-int nfix(int i, int n) {
- if (i < 0) {
- i = 0;
- } else if (i >= n) {
- i = n - 1;
- }
- return i;
-}
-
-int nmin(int n, int m) {
- if (n < m) {
- return n;
- } else {
- return m;
- }
-}
-
-int nmax(int n, int m) {
- if (n > m) {
- return n;
- } else {
- return m;
- }
-}
-
-int nabs(int n) {
- if (n < 0) {
- return -n;
- } else {
- return n;
- }
-}
-
-double dabs(double x) {
- if (x < 0.0) {
- return -x;
- } else {
- return x;
- }
-}
-
-void lowercase(char *str) {
- char *p;
- if (str == NULL) {
- return;
- }
- p = str;
- while (*p != '\0') {
- *p = tolower((unsigned char) (*p));
- p++;
- }
-}
-
-void uppercase(char *str) {
- char *p;
- if (str == NULL) {
- return;
- }
- p = str;
- while (*p != '\0') {
- *p = toupper((unsigned char) (*p));
- p++;
- }
-}
-
-char *lblanks(char *str) {
- char *p = str;
- while (*p != '\0') {
- if (! isspace((unsigned char) (*p))) {
- break;
- }
- p++;
- }
- return p;
-}
-
-void strzero(char *str) {
- char *p = str;
- if (p != NULL) {
- while (*p != '\0') {
- *p = '\0';
- p++;
- }
- }
-}
-
-int is_decimal(char *str) {
- char *p = str;
- if (p != NULL) {
- int first = 1;
- while (*p != '\0') {
- if (first && *p == '-') {
- ;
- } else if (isdigit((int) *p)) {
- ;
- } else {
- return 0;
- }
- first = 0;
- p++;
- }
- return 1;
- }
- return 0;
-}
-
-int scan_hexdec(char *str, unsigned long *num) {
- if (sscanf(str, "0x%lx", num) != 1) {
- if (sscanf(str, "%lu", num) != 1) {
- return 0;
- }
- }
- return 1;
-}
-
-int parse_geom(char *str, int *wp, int *hp, int *xp, int *yp, int W, int H) {
- int w, h, x, y;
- if (! str) {
- return 0;
- }
- /* handle +/-x and +/-y */
- if (sscanf(str, "%dx%d+%d+%d", &w, &h, &x, &y) == 4) {
- ;
- } else if (sscanf(str, "%dx%d-%d+%d", &w, &h, &x, &y) == 4) {
- w = nabs(w);
- x = W - x - w;
- } else if (sscanf(str, "%dx%d+%d-%d", &w, &h, &x, &y) == 4) {
- h = nabs(h);
- y = H - y - h;
- } else if (sscanf(str, "%dx%d-%d-%d", &w, &h, &x, &y) == 4) {
- w = nabs(w);
- h = nabs(h);
- x = W - x - w;
- y = H - y - h;
- } else {
- return 0;
- }
- *wp = w;
- *hp = h;
- *xp = x;
- *yp = y;
- return 1;
-}
-
-void set_env(char *name, char *value) {
- char *str;
- if (! name) {
- return;
- }
- if (! value) {
- value = "";
- }
- str = (char *) malloc(strlen(name) + 1 + strlen(value) + 1);
- sprintf(str, "%s=%s", name, value);
- putenv(str);
-}
-
-char *bitprint(unsigned int st, int nbits) {
- static char str[33];
- int i, mask;
- if (nbits > 32) {
- nbits = 32;
- }
- for (i=0; i<nbits; i++) {
- str[i] = '0';
- }
- str[nbits] = '\0';
- mask = 1;
- for (i=nbits-1; i>=0; i--) {
- if (st & mask) {
- str[i] = '1';
- }
- mask = mask << 1;
- }
- return str; /* take care to use or copy immediately */
-}
-
-char *get_user_name(void) {
- char *user = NULL;
-
- user = getenv("USER");
- if (user == NULL) {
- user = getenv("LOGNAME");
- }
-
-#if LIBVNCSERVER_HAVE_PWD_H
- if (user == NULL) {
- struct passwd *pw = getpwuid(getuid());
- if (pw) {
- user = pw->pw_name;
- }
- }
-#endif
-
- if (user) {
- return(strdup(user));
- } else {
- return(strdup("unknown-user"));
- }
-}
-
-char *get_home_dir(void) {
- char *home = NULL;
-
- home = getenv("HOME");
-
-#if LIBVNCSERVER_HAVE_PWD_H
- if (home == NULL) {
- struct passwd *pw = getpwuid(getuid());
- if (pw) {
- home = pw->pw_dir;
- }
- }
-#endif
-
- if (home) {
- return(strdup(home));
- } else {
- return(strdup("/"));
- }
-}
-
-char *get_shell(void) {
- char *shell = NULL;
-
- shell = getenv("SHELL");
-
-#if LIBVNCSERVER_HAVE_PWD_H
- if (shell == NULL) {
- struct passwd *pw = getpwuid(getuid());
- if (pw) {
- shell = pw->pw_shell;
- }
- }
-#endif
-
- if (shell) {
- return(strdup(shell));
- } else {
- return(strdup("/bin/sh"));
- }
-}
-
-/*
- * utility to get the current host name
- */
-char *this_host(void) {
- char host[MAXN];
-#if LIBVNCSERVER_HAVE_GETHOSTNAME
- if (gethostname(host, MAXN) == 0) {
- host[MAXN-1] = '\0';
- return strdup(host);
- } else if (UT.nodename) {
- return strdup(UT.nodename);
- }
-#endif
- return NULL;
-}
-
-int match_str_list(char *str, char **list) {
- int i = 0, matched = 0;
-
- if (! str || ! list) {
- return 0;
- }
- while (list[i] != NULL) {
- if (!strcmp(list[i], "*")) {
- matched = 1;
- break;
- } else if (strstr(str, list[i])) {
- matched = 1;
- break;
- }
- i++;
- }
- return matched;
-}
-
-char **create_str_list(char *cslist) {
- int i, n;
- char *p, *str;
- char **list = NULL;
-
- if (! cslist) {
- return NULL;
- }
-
- str = strdup(cslist);
- n = 1;
- p = str;
- while (*p != '\0') {
- if (*p == ',') {
- n++;
- }
- p++;
- }
-
- /* the extra last one holds NULL */
- list = (char **) calloc((n+1)*sizeof(char *), 1);
-
- p = strtok(str, ",");
- i = 0;
- while (p && i < n) {
- list[i++] = strdup(p);
- p = strtok(NULL, ",");
- }
- free(str);
-
- return list;
-}
-
-/*
- * simple function for measuring sub-second time differences, using
- * a double to hold the value.
- */
-double dtime(double *t_old) {
- /*
- * usage: call with 0.0 to initialize, subsequent calls give
- * the time difference since last call.
- */
- double t_now, dt;
- struct timeval now;
-
- gettimeofday(&now, NULL);
- t_now = now.tv_sec + ( (double) now.tv_usec/1000000. );
- if (*t_old == 0.0) {
- *t_old = t_now;
- return t_now;
- }
- dt = t_now - *t_old;
- *t_old = t_now;
- return(dt);
-}
-
-/* common dtime() activities: */
-double dtime0(double *t_old) {
- *t_old = 0.0;
- return dtime(t_old);
-}
-
-double dnow(void) {
- double t;
- return dtime0(&t);
-}
-
-double dnowx(void) {
- return dnow() - x11vnc_start;
-}
-
-double rnow(void) {
- double t = dnow();
- t = t - ((int) t);
- if (t > 1.0) {
- t = 1.0;
- } else if (t < 0.0) {
- t = 0.0;
- }
- return t;
-}
-
-double rfac(void) {
- double f;
- static int first = 1;
-
- if (first) {
- unsigned int s;
- if (getenv("RAND_SEED")) {
- s = (unsigned int) atoi(getenv("RAND_SEED"));
- } else {
- s = (unsigned int) ((int) getpid() + 100000 * rnow());
- }
- srand(s);
- first = 0;
- }
-
- f = (double) rand();
- f = f / ((double) RAND_MAX);
-
- return f;
-}
-
-void check_allinput_rate(void) {
- static double last_all_input_check = 0.0;
- static int set = 0, verb = -1;
-
- if (use_threads) {
- return;
- }
- if (verb < 0) {
- verb = 0;
- if (getenv("RATE_VERB")) verb = 1;
- }
- if (! set) {
- set = 1;
- last_all_input_check = dnow();
- } else {
- int dt = 5;
- if (x11vnc_current > last_all_input_check + dt) {
- int n, nq = 0;
- while ((n = rfbCheckFds(screen, 0))) {
- nq += n;
- }
- if (verb) fprintf(stderr, "nqueued: %d\n", nq);
- if (getenv("CHECK_RATE") && nq > 18 * dt) {
- double rate = nq / dt;
- if (verb) rfbLog("check_allinput_rate:\n");
- if (verb) rfbLog("Client is sending %.1f extra requests per second for the\n", rate);
- if (verb) rfbLog("past %d seconds! (queued: %d)\n", dt, nq);
- if (strstr(getenv("CHECK_RATE"), "allinput") && !all_input && !handle_events_eagerly) {
- rfbLog("Switching to -allpinput mode.\n");
- all_input = 1;
- }
- }
- set = 0;
- }
- }
-}
-
-static void do_allinput(long usec) {
- static double last = 0.0;
- static int meas = 0, verb = -1;
- int n, f = 1, cnt = 0, m = 0;
- long usec0;
- double now;
- if (!screen || !screen->clientHead) {
- return;
- }
- if (use_threads) {
- return;
- }
- if (usec < 0) {
- usec = 0;
- }
- usec0 = usec;
- if (last == 0.0) {
- last = dnow();
- }
- if (verb < 0) {
- verb = 0;
- if (getenv("RATE_VERB")) verb = 1;
- }
- while ((n = rfbCheckFds(screen, usec)) > 0) {
- if (f) {
- if (verb) fprintf(stderr, " *");
- f = 0;
- }
- if (cnt++ > 30) {
- break;
- }
- meas += n;
- m += n;
- }
- if (verb) fprintf(stderr, "+%d/%d", cnt, m);
- now = dnow();
- if (now > last + 2.0) {
- double rate = meas / (now - last);
- if (verb) fprintf(stderr, "\n allinput rate: %.2f ", rate);
- meas = 0;
- last = dnow();
- }
-}
-
-/*
- * utility wrapper to call rfbProcessEvents
- * checks that we are not in threaded mode.
- */
-#define USEC_MAX 999999 /* libvncsever assumes < 1 second */
-int rfbPE(long usec) {
- int uip0 = unixpw_in_progress;
- static int check_rate = -1;
- int res = 0;
- if (! screen) {
- return res;
- }
- if (unixpw && unixpw_in_progress && !unixpw_in_rfbPE) {
- rfbLog("unixpw_in_rfbPE: skipping rfbPE\n");
- return res;
- }
-
- if (debug_tiles > 2) {
- double tm = dnow();
- fprintf(stderr, "rfbPE(%d) t: %.4f\n",
- (int) usec, tm - x11vnc_start);
- }
-
- if (usec > USEC_MAX) {
- usec = USEC_MAX;
- }
- if (! use_threads) {
- rfbBool r;
- r = rfbProcessEvents(screen, usec);
- if (r) {
- res = 1;
- }
- }
-
- if (unixpw && unixpw_in_progress && !uip0) {
- if (!unixpw_in_rfbPE) {
- rfbLog("rfbPE: got new client in non-rfbPE\n");
- ; /* this is new unixpw client */
- }
- }
-
- if (ipv6_listen) {
- check_ipv6_listen(usec);
- }
- if (unix_sock) {
- check_unix_sock(usec);
- }
- if (check_rate != 0) {
- if (check_rate < 0) {
- if (getenv("CHECK_RATE")) {
- check_rate = 1;
- } else {
- check_rate = 0;
- }
- }
- if (check_rate && !all_input && x11vnc_current < last_client + 45) {
- check_allinput_rate();
- }
- }
- if (all_input) {
- do_allinput(usec);
- }
- return res;
-}
-
-void rfbCFD(long usec) {
- int uip0 = unixpw_in_progress;
- if (! screen) {
- return;
- }
- if (unixpw && unixpw_in_progress && !unixpw_in_rfbPE) {
- static int msgs = 0;
- static double last_reset = 0.0;
- if (dnow() > last_reset + 5.0) {
- msgs = 0;
- last_reset = dnow();
- }
- if (msgs++ < 10) {
- rfbLog("unixpw_in_rfbPE: skipping rfbCFD\n");
- if (msgs == 10) {
- rfbLog("unixpw_in_rfbPE: skipping rfbCFD ...\n");
- }
- }
- return;
- }
- if (usec > USEC_MAX) {
- usec = USEC_MAX;
- }
-
- if (debug_tiles > 2) {
- double tm = dnow();
- fprintf(stderr, "rfbCFD(%d) t: %.4f\n",
- (int) usec, tm - x11vnc_start);
- }
-
-
- if (! use_threads) {
- if (all_input) {
- do_allinput(usec);
- } else {
- if (handle_events_eagerly) {
- screen->handleEventsEagerly = TRUE;
- } else {
- screen->handleEventsEagerly = FALSE;
- }
- rfbCheckFds(screen, usec);
- }
- }
-
- if (unixpw && unixpw_in_progress && !uip0) {
- if (!unixpw_in_rfbPE) {
- rfbLog("rfbCFD: got new client in non-rfbPE\n");
- ; /* this is new unixpw client */
- }
- }
-}
-
-double rect_overlap(int x1, int y1, int x2, int y2, int X1, int Y1,
- int X2, int Y2) {
- double a, A, o;
- sraRegionPtr r, R;
- sraRectangleIterator *iter;
- sraRect rt;
-
- a = nabs((x2 - x1) * (y2 - y1));
- A = nabs((X2 - X1) * (Y2 - Y1));
-
- if (a == 0 || A == 0) {
- return 0.0;
- }
-
- r = sraRgnCreateRect(x1, y1, x2, y2);
- R = sraRgnCreateRect(X1, Y1, X2, Y2);
-
- sraRgnAnd(r, R);
-
- o = 0.0;
- iter = sraRgnGetIterator(r);
- while (sraRgnIteratorNext(iter, &rt)) {
- o += nabs( (rt.x2 - rt.x1) * (rt.y2 - rt.y1) );
- }
- sraRgnReleaseIterator(iter);
-
- sraRgnDestroy(r);
- sraRgnDestroy(R);
-
- if (a < A) {
- o = o/a;
- } else {
- o = o/A;
- }
- return o;
-}
-
-/*
- * choose a desktop name
- */
-char *choose_title(char *display) {
- static char title[(MAXN+10)];
-
- memset(title, 0, sizeof(title));
- strcpy(title, "x11vnc");
-
- if (display == NULL) {
- display = getenv("DISPLAY");
- }
-
-#ifdef MACOSX
- if (display == NULL || strstr(display, "/tmp/") == display) {
- char *u = get_user_name();
- char *th = this_host();
- if (strlen(u) > MAXN/4) {
- u = "someone";
- }
- strcpy(title, u);
- if (th == NULL && UT.nodename) {
- th = UT.nodename;
- }
- if (th) {
- strcat(title, "@");
- strncat(title, th, MAXN - strlen(title));
- }
- return title;
- }
-#endif
-
- if (display == NULL) {
- return title;
- }
-
- /* use display: */
- title[0] = '\0';
- if (display[0] == ':') {
- char *th = this_host();
- if (th != NULL) {
- strncpy(title, th, MAXN - strlen(title));
- }
- }
- strncat(title, display, MAXN - strlen(title));
- X_LOCK;
- if (subwin && dpy && valid_window(subwin, NULL, 0)) {
-#if !NO_X11
- char *name = NULL;
- int do_appshare = getenv("X11VNC_APPSHARE_ACTIVE") ? 1 : 0;
- if (0 && do_appshare) {
- title[0] = '\0';
- }
- if (XFetchName(dpy, subwin, &name)) {
- if (name) {
- if (title[0] != '\0') {
- strncat(title, " ", MAXN - strlen(title));
- }
- strncat(title, name, MAXN - strlen(title));
- free(name);
- }
- }
- if (do_appshare) {
- Window c;
- int x, y;
- if (xtranslate(subwin, rootwin, 0, 0, &x, &y, &c, 1)) {
- char tmp[32];
- if (scaling) {
- x *= scale_fac_x;
- y *= scale_fac_y;
- }
- sprintf(tmp, " XY=%d,%d", x, y);
- strncat(title, tmp, MAXN - strlen(title));
- }
- rfbLog("appshare title: %s\n", title);
- }
-#endif /* NO_X11 */
- }
- X_UNLOCK;
- return title;
-}
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