You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
549 lines
9.0 KiB
549 lines
9.0 KiB
/* -- util.c -- */
|
|
|
|
#include "x11vnc.h"
|
|
#include "cleanup.h"
|
|
#include "win_utils.h"
|
|
#include "unixpw.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);
|
|
|
|
void 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 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);
|
|
}
|
|
#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 **) malloc( (n+1)*sizeof(char *) );
|
|
for(i=0; i < n+1; i++) {
|
|
list[i] = NULL;
|
|
}
|
|
|
|
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 = dnowx();
|
|
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 = (double) rand();
|
|
f = f / ((double) RAND_MAX);
|
|
return f;
|
|
}
|
|
|
|
/*
|
|
* utility wrapper to call rfbProcessEvents
|
|
* checks that we are not in threaded mode.
|
|
*/
|
|
#define USEC_MAX 999999 /* libvncsever assumes < 1 second */
|
|
void rfbPE(long usec) {
|
|
int uip0 = unixpw_in_progress;
|
|
if (! screen) {
|
|
return;
|
|
}
|
|
if (unixpw && unixpw_in_progress && !unixpw_in_rfbPE) {
|
|
rfbLog("unixpw_in_rfbPE: skipping rfbPE\n");
|
|
return;
|
|
}
|
|
|
|
if (usec > USEC_MAX) {
|
|
usec = USEC_MAX;
|
|
}
|
|
if (! use_threads) {
|
|
rfbProcessEvents(screen, usec);
|
|
}
|
|
|
|
if (unixpw && unixpw_in_progress && !uip0) {
|
|
if (!unixpw_in_rfbPE) {
|
|
rfbLog("rfbPE: got new client in non-rfbPE\n");
|
|
; /* this is new unixpw client */
|
|
}
|
|
}
|
|
}
|
|
|
|
void rfbCFD(long usec) {
|
|
int uip0 = unixpw_in_progress;
|
|
if (! screen) {
|
|
return;
|
|
}
|
|
if (unixpw && unixpw_in_progress && !unixpw_in_rfbPE) {
|
|
rfbLog("unixpw_in_rfbPE: skipping rfbCFD\n");
|
|
return;
|
|
}
|
|
if (usec > USEC_MAX) {
|
|
usec = USEC_MAX;
|
|
}
|
|
|
|
if (! use_threads) {
|
|
if (0 && all_input) {
|
|
static int cnt = 0;
|
|
int f = 1;
|
|
while (rfbCheckFds(screen, usec) > 0) {
|
|
if (f) {
|
|
cnt++;
|
|
f = 0;
|
|
}
|
|
fprintf(stderr, "-%d", cnt);
|
|
}
|
|
} else {
|
|
if (all_input) {
|
|
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, MAXN+10);
|
|
strcpy(title, "x11vnc");
|
|
|
|
if (display == NULL) {
|
|
display = getenv("DISPLAY");
|
|
}
|
|
if (display == NULL) {
|
|
return title;
|
|
}
|
|
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));
|
|
if (subwin && dpy && valid_window(subwin, NULL, 0)) {
|
|
char *name = NULL;
|
|
if (XFetchName(dpy, subwin, &name)) {
|
|
if (name) {
|
|
strncat(title, " ", MAXN - strlen(title));
|
|
strncat(title, name, MAXN - strlen(title));
|
|
free(name);
|
|
}
|
|
}
|
|
}
|
|
return title;
|
|
}
|