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remote.c
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/*
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.
*/
/* -- remote.c -- */
#include "x11vnc.h"
#include "inet.h"
#include "xwrappers.h"
#include "xevents.h"
#include "xinerama.h"
#include "xrandr.h"
#include "xdamage.h"
#include "xrecord.h"
#include "xkb_bell.h"
#include "win_utils.h"
#include "screen.h"
#include "cleanup.h"
#include "gui.h"
#include "solid.h"
#include "user.h"
#include "rates.h"
#include "scan.h"
#include "connections.h"
#include "pointer.h"
#include "cursor.h"
#include "userinput.h"
#include "keyboard.h"
#include "selection.h"
#include "unixpw.h"
#include "uinput.h"
#include "userinput.h"
#include "avahi.h"
#include "sslhelper.h"
int send_remote_cmd(char *cmd, int query, int wait);
int do_remote_query(char *remote_cmd, char *query_cmd, int remote_sync,
int qdefault);
void check_black_fb(void);
int check_httpdir(void);
void http_connections(int on);
int remote_control_access_ok(void);
char *process_remote_cmd(char *cmd, int stringonly);
static char *add_item(char *instr, char *item);
static char *delete_item(char *instr, char *item);
static void if_8bpp_do_new_fb(void);
static void reset_httpport(int old, int newp);
static void reset_rfbport(int old, int newp) ;
char *query_result = NULL;
/*
* for the wild-n-crazy -remote/-R interface.
*/
int send_remote_cmd(char *cmd, int query, int wait) {
FILE *in = NULL;
if (query_result != NULL) {
free(query_result);
query_result = NULL;
}
if (client_connect_file) {
umask(077);
in = fopen(client_connect_file, "w");
if (in == NULL) {
fprintf(stderr, "send_remote_cmd: could not open "
"connect file \"%s\" for writing\n",
client_connect_file);
perror("fopen");
return 1;
}
} else if (x11vnc_remote_prop == None) {
initialize_x11vnc_remote_prop();
if (x11vnc_remote_prop == None) {
fprintf(stderr, "send_remote_cmd: could not obtain "
"X11VNC_REMOTE X property\n");
return 1;
}
}
if (in != NULL) {
fprintf(stderr, ">>> sending remote command: \"%s\"\n via"
" connect file: %s\n", cmd, client_connect_file);
fprintf(in, "%s\n", cmd);
fclose(in);
} else {
fprintf(stderr, ">>> sending remote command: \"%s\" via"
" X11VNC_REMOTE X property.\n", cmd);
set_x11vnc_remote_prop(cmd);
if (dpy) {
XFlush_wr(dpy);
}
}
if (query || wait) {
char line[X11VNC_REMOTE_MAX];
int rc=1, i=0, max=140, ms_sl=25;
if (!strcmp(cmd, "cmd=stop")) {
max = 40;
}
if (strstr(cmd, "script:")) {
max = 400;
}
if (strstr(cmd, "bcx_xattach:")) {
max = 400;
}
if (getenv("X11VNC_SYNC_TIMEOUT")) {
max = (int) ((1000. * atof(getenv("X11VNC_SYNC_TIMEOUT")))/ms_sl);
}
for (i=0; i<max; i++) {
if (i==0) {
usleep(10 * 1000);
} else {
usleep(ms_sl * 1000);
}
if (client_connect_file) {
char *q;
in = fopen(client_connect_file, "r");
if (in == NULL) {
fprintf(stderr, "send_remote_cmd: could"
" not open connect file \"%s\" for"
" writing\n", client_connect_file);
perror("fopen");
return 1;
}
fgets(line, X11VNC_REMOTE_MAX, in);
fclose(in);
q = line;
while (*q != '\0') {
if (*q == '\n') *q = '\0';
q++;
}
} else {
read_x11vnc_remote_prop(1);
strncpy(line, x11vnc_remote_str,
X11VNC_REMOTE_MAX);
}
if (strcmp(cmd, line)) {
if (query || wait) {
query_result = strdup(line);
fprintf(stdout, "%s\n", line);
fflush(stdout);
}
rc = 0;
break;
}
}
if (rc) {
fprintf(stderr, "error: could not connect to "
"an x11vnc server at %s (rc=%d)\n",
client_connect_file ? client_connect_file
: DisplayString(dpy), rc);
}
return rc;
}
return 0;
}
int do_remote_query(char *remote_cmd, char *query_cmd, int remote_sync,
int qdefault) {
char *rcmd = NULL, *qcmd = NULL;
int rc = 1, direct = 0;
if (qdefault && !query_cmd) {
query_cmd = remote_cmd;
remote_cmd = NULL;
}
if (remote_cmd && strstr(remote_cmd, "DIRECT:") == remote_cmd) {
direct = 1;
remote_cmd += strlen("DIRECT:");
}
if (query_cmd && strstr(query_cmd, "DIRECT:") == query_cmd) {
direct = 1;
query_cmd += strlen("DIRECT:");
}
if (remote_cmd) {
rcmd = (char *) malloc(strlen(remote_cmd) + 5);
strcpy(rcmd, "cmd=");
strcat(rcmd, remote_cmd);
}
if (query_cmd) {
qcmd = (char *) malloc(strlen(query_cmd) + 5);
strcpy(qcmd, "qry=");
strcat(qcmd, query_cmd);
}
if (direct) {
char *res;
if (rcmd) {
res = process_remote_cmd(rcmd, 1);
fprintf(stdout, "%s\n", res);
}
if (qcmd) {
res = process_remote_cmd(qcmd, 1);
fprintf(stdout, "%s\n", res);
}
fflush(stdout);
return 0;
}
if (qdefault) {
char *res;
if (!qcmd) {
return 1;
}
res = process_remote_cmd(qcmd, 1);
fprintf(stdout, "%s\n", res);
fflush(stdout);
return 0;
}
if (rcmd && qcmd) {
rc = send_remote_cmd(rcmd, 0, 1);
if (rc) {
free(rcmd);
free(qcmd);
return(rc);
}
rc = send_remote_cmd(qcmd, 1, 1);
} else if (rcmd) {
rc = send_remote_cmd(rcmd, 0, remote_sync);
free(rcmd);
} else if (qcmd) {
rc = send_remote_cmd(qcmd, 1, 1);
free(qcmd);
}
return rc;
}
static char *add_item(char *instr, char *item) {
char *p, *str;
int len, saw_item = 0;
if (! instr || *instr == '\0') {
str = strdup(item);
return str;
}
len = strlen(instr) + 1 + strlen(item) + 1;
str = (char *) malloc(len);
str[0] = '\0';
/* n.b. instr will be modified; caller replaces with returned string */
p = strtok(instr, ",");
while (p) {
if (!strcmp(p, item)) {
if (saw_item) {
p = strtok(NULL, ",");
continue;
}
saw_item = 1;
} else if (*p == '\0') {
p = strtok(NULL, ",");
continue;
}
if (str[0]) {
strcat(str, ",");
}
strcat(str, p);
p = strtok(NULL, ",");
}
if (! saw_item) {
if (str[0]) {
strcat(str, ",");
}
strcat(str, item);
}
return str;
}
static char *delete_item(char *instr, char *item) {
char *p, *str;
int len;
if (! instr || *instr == '\0') {
str = strdup("");
return str;
}
len = strlen(instr) + 1;
str = (char *) malloc(len);
str[0] = '\0';
/* n.b. instr will be modified; caller replaces with returned string */
p = strtok(instr, ",");
while (p) {
if (!strcmp(p, item) || *p == '\0') {
p = strtok(NULL, ",");
continue;
}
if (str[0]) {
strcat(str, ",");
}
strcat(str, p);
p = strtok(NULL, ",");
}
return str;
}
static void if_8bpp_do_new_fb(void) {
if (bpp == 8) {
do_new_fb(0);
} else {
rfbLog(" bpp(%d) is not 8bpp, not resetting fb\n", bpp);
}
}
void check_black_fb(void) {
if (!screen) {
return;
}
if (new_fb_size_clients(screen) != client_count) {
rfbLog("trying to send a black fb for non-newfbsize"
" clients %d != %d\n", client_count,
new_fb_size_clients(screen));
push_black_screen(4);
}
}
int check_httpdir(void) {
if (http_dir && http_dir[0] != '\0') {
return 1;
} else {
char *prog = NULL, *httpdir, *q;
struct stat sbuf;
int len;
rfbLog("check_httpdir: trying to guess httpdir... %s\n", program_name);
if (program_name[0] == '/') {
prog = strdup(program_name);
} else {
char cwd[1024];
getcwd(cwd, 1024);
len = strlen(cwd) + 1 + strlen(program_name) + 1;
prog = (char *) malloc(len);
snprintf(prog, len, "%s/%s", cwd, program_name);
if (stat(prog, &sbuf) != 0) {
char *path = strdup(getenv("PATH"));
char *p, *base;
base = strrchr(program_name, '/');
if (base) {
base++;
} else {
base = program_name;
}
p = strtok(path, ":");
while(p) {
if (prog) {
free(prog);
prog = NULL;
}
len = strlen(p) + 1 + strlen(base) + 1;
prog = (char *) malloc(len);
snprintf(prog, len, "%s/%s", p, base);
if (stat(prog, &sbuf) == 0) {
break;
}
p = strtok(NULL, ":");
}
free(path);
}
}
/*
* /path/to/bin/x11vnc
* /path/to/bin/../share/x11vnc/classes
* 12345678901234567
* /path/to/bin/../share/x11vnc/classes/ssl
* 123456789012345678901
* 21
*/
if ((q = strrchr(prog, '/')) == NULL) {
rfbLog("check_httpdir: bad program path: %s\n", prog);
free(prog);
rfbLog("check_httpdir: *HTTP disabled* Use -httpdir path\n");
return 0;
}
len = strlen(prog) + 21 + 1;
*q = '\0';
httpdir = (char *) malloc(len);
if (use_stunnel && http_ssl) {
snprintf(httpdir, len, "%s/../share/x11vnc/classes/ssl", prog);
} else if (!enc_str && (use_openssl || use_stunnel || http_ssl)) {
snprintf(httpdir, len, "%s/../share/x11vnc/classes/ssl", prog);
} else {
snprintf(httpdir, len, "%s/../share/x11vnc/classes", prog);
}
if (stat(httpdir, &sbuf) != 0) {
if (use_stunnel && http_ssl) {
snprintf(httpdir, len, "%s/../classes/ssl", prog);
} else if (!enc_str && (use_openssl || use_stunnel || http_ssl)) {
snprintf(httpdir, len, "%s/../classes/ssl", prog);
} else {
snprintf(httpdir, len, "%s/../classes", prog);
}
}
free(prog);
if (stat(httpdir, &sbuf) == 0) {
/* good enough for me */
rfbLog("check_httpdir: guessed directory:\n");
rfbLog(" %s\n", httpdir);
http_dir = httpdir;
return 1;
} else {
/* try some hardwires: */
int i;
char **use;
char *list[] = {
"/usr/local/share/x11vnc/classes",
"/usr/share/x11vnc/classes",
NULL
};
char *ssllist[] = {
"/usr/local/share/x11vnc/classes/ssl",
"/usr/share/x11vnc/classes/ssl",
NULL
};
if (use_stunnel && http_ssl) {
use = ssllist;
} else if (!enc_str && (use_openssl || use_stunnel || http_ssl)) {
use = ssllist;
} else {
use = list;
}
i = 0;
while (use[i] != NULL) {
if (stat(use[i], &sbuf) == 0) {
http_dir = strdup(use[i]);
return 1;
}
i++;
}
rfbLog("check_httpdir: bad guess:\n");
rfbLog(" %s\n", httpdir);
rfbLog("check_httpdir: *HTTP disabled* Use -httpdir path\n");
return 0;
}
}
}
static void rfb_http_init_sockets(void) {
in_addr_t iface;
if (!screen) {
return;
}
iface = screen->listenInterface;
if (getenv("X11VNC_HTTP_LISTEN_LOCALHOST")) {
rfbLog("http_connections: HTTP listen on localhost only. (not HTTPS)\n");
screen->listenInterface = htonl(INADDR_LOOPBACK);
}
rfbHttpInitSockets(screen);
if (noipv4 || getenv("IPV4_FAILS")) {
if (getenv("IPV4_FAILS")) {
rfbLog("TESTING: IPV4_FAILS for rfb_http_init_sockets()\n");
}
if (screen->httpListenSock > -1) {
close(screen->httpListenSock);
screen->httpListenSock = -1;
}
}
screen->listenInterface = iface;
}
void http_connections(int on) {
if (!screen) {
return;
}
if (on) {
rfbLog("http_connections: turning on http service.\n");
if (inetd && use_openssl) {
/*
* try to work around rapid fire https requests
* in inetd mode... ugh.
*/
if (screen->httpPort == 0) {
int port = find_free_port(5800, 5850);
if (port) {
/* mutex */
screen->httpPort = port;
}
}
}
screen->httpInitDone = FALSE;
if (check_httpdir()) {
int fd6 = -1;
char *save = listen_str6;
screen->httpDir = http_dir;
rfb_http_init_sockets();
if (getenv("X11VNC_HTTP_LISTEN_LOCALHOST")) {
listen_str6 = "localhost";
}
if (screen->httpPort != 0 && screen->httpListenSock < 0) {
rfbLog("http_connections: failed to listen on http port: %d\n", screen->httpPort);
if (ipv6_listen) {
fd6 = listen6(screen->httpPort);
}
if (fd6 < 0) {
clean_up_exit(1);
}
rfbLog("http_connections: trying IPv6 only mode.\n");
}
if (ipv6_listen && screen->httpPort > 0) {
if (fd6 < 0) {
fd6 = listen6(screen->httpPort);
}
ipv6_http_fd = fd6;
if (ipv6_http_fd >= 0) {
rfbLog("http_connections: Listening %s on IPv6 port %d (socket %d)\n",
screen->httpListenSock < 0 ? "only" : "also",
screen->httpPort, ipv6_http_fd);
}
}
listen_str6 = save;
}
} else {
rfbLog("http_connections: turning off http service.\n");
if (screen->httpListenSock > -1) {
close(screen->httpListenSock);
screen->httpListenSock = -1;
}
screen->httpDir = NULL;
if (ipv6_http_fd >= 0) {
close(ipv6_http_fd);
ipv6_http_fd = -1;
}
}
}
static void reset_httpport(int old, int newp) {
int hp = newp;
if (! screen->httpDir) {
return;
} else if (inetd) {
rfbLog("reset_httpport: cannot set httpport: %d in inetd.\n", hp);
return;
} else if (!screen) {
rfbLog("reset_httpport: no screen.\n");
return;
} else if (hp < 0) {
rfbLog("reset_httpport: invalid httpport: %d\n", hp);
return;
} else if (hp == old) {
rfbLog("reset_httpport: unchanged httpport: %d\n", hp);
return;
}
if (screen->httpListenSock > -1) {
close(screen->httpListenSock);
screen->httpListenSock = -1;
}
screen->httpPort = hp;
screen->httpInitDone = FALSE;
rfbLog("reset_httpport: setting httpport %d -> %d.\n",
old == -1 ? hp : old, hp);
if (noipv4 || getenv("IPV4_FAILS")) {
if (getenv("IPV4_FAILS")) {
rfbLog("TESTING: IPV4_FAILS for reset_httpport()\n");
}
} else if (screen->httpPort == 0) {
;
} else {
rfb_http_init_sockets();
}
if (screen->httpPort != 0 && screen->httpListenSock < 0) {
rfbLog("reset_httpport: failed to listen on http port: %d\n",
screen->httpPort);
}
if (ipv6_http_fd >= 0) {
close(ipv6_http_fd);
ipv6_http_fd = -1;
}
if (ipv6_listen && screen->httpPort > 0) {
ipv6_http_fd = listen6(screen->httpPort);
rfbLog("reset_httpport: ipv6_http_fd: %d port: %d\n",
ipv6_http_fd, screen->httpPort);
}
}
static void reset_rfbport(int old, int newp) {
int rp = newp;
if (inetd) {
rfbLog("reset_rfbport: cannot set rfbport: %d in inetd.\n", rp);
return;
} else if (!screen) {
rfbLog("reset_rfbport: no screen.\n");
return;
} else if (rp < 0) {
rfbLog("reset_rfbport: invalid rfbport: %d\n", rp);
return;
} else if (rp == old) {
rfbLog("reset_rfbport: unchanged rfbport: %d\n", rp);
return;
}
rfbLog("reset_rfbport: setting rfbport %d -> %d.\n", old == -1 ? rp : old, rp);
screen->port = rp;
if (use_openssl) {
openssl_port(1);
if (openssl_sock < 0 && openssl_sock6 < 0) {
rfbLog("reset_rfbport: warning could not listen on port: %d\n",
screen->port);
} else {
set_vnc_desktop_name();
}
if (https_port_num >= 0) {
https_port(1);
}
return;
}
if (screen->listenSock >= 0) {
FD_CLR(screen->listenSock, &(screen->allFds));
close(screen->listenSock);
screen->listenSock = -1;
}
if (noipv4 || getenv("IPV4_FAILS")) {
if (getenv("IPV4_FAILS")) {
rfbLog("TESTING: IPV4_FAILS for reset_rfbport()\n");
}
} else {
screen->listenSock = listen_tcp(screen->port, screen->listenInterface, 0);
if (screen->listenSock >= 0) {
if (screen->listenSock > screen->maxFd) {
screen->maxFd = screen->listenSock;
}
FD_SET(screen->listenSock, &(screen->allFds));
}
}
if (ipv6_listen_fd >= 0) {
close(ipv6_listen_fd);
ipv6_listen_fd = -1;
}
if (ipv6_listen && screen->port > 0) {
ipv6_listen_fd = listen6(screen->port);
rfbLog("reset_rfbport: ipv6_listen_fd: %d port: %d\n",
ipv6_listen_fd, screen->port);
}
if (screen->listenSock < 0 && ipv6_listen_fd < 0) {
rfbLog("reset_rfbport: warning could not listen on port: %d\n", screen->port);
} else {
set_vnc_desktop_name();
}
}
/*
* Do some sanity checking of the permissions on the XAUTHORITY and the
* -connect file. This is -privremote. What should be done is check
* for an empty host access list, currently we lazily do not bring in
* libXau yet.
*/
int remote_control_access_ok(void) {
#if NO_X11
return 0;
#else
struct stat sbuf;
if (client_connect_file) {
if (stat(client_connect_file, &sbuf) == 0) {
if (sbuf.st_mode & S_IWOTH) {
rfbLog("connect file is writable by others.\n");
rfbLog(" %s\n", client_connect_file);
return 0;
}
if (sbuf.st_mode & S_IWGRP) {
rfbLog("connect file is writable by group.\n");
rfbLog(" %s\n", client_connect_file);
return 0;
}
}
}
if (dpy) {
char tmp[1000];
char *home, *xauth;
char *dpy_str = DisplayString(dpy);
Display *dpy2;
XHostAddress *xha;
Bool enabled;
int n;
home = get_home_dir();
if (getenv("XAUTHORITY") != NULL) {
xauth = getenv("XAUTHORITY");
} else if (home) {
int len = 1000 - strlen("/.Xauthority") - 1;
strncpy(tmp, home, len);
strcat(tmp, "/.Xauthority");
xauth = tmp;
} else {
rfbLog("cannot determine default XAUTHORITY.\n");
return 0;
}
if (home) {
free(home);
}
if (stat(xauth, &sbuf) == 0) {
if (sbuf.st_mode & S_IWOTH) {
rfbLog("XAUTHORITY is writable by others!!\n");
rfbLog(" %s\n", xauth);
return 0;
}
if (sbuf.st_mode & S_IWGRP) {
rfbLog("XAUTHORITY is writable by group!!\n");
rfbLog(" %s\n", xauth);
return 0;
}
if (sbuf.st_mode & S_IROTH) {
rfbLog("XAUTHORITY is readable by others.\n");
rfbLog(" %s\n", xauth);
return 0;
}
if (sbuf.st_mode & S_IRGRP) {
rfbLog("XAUTHORITY is readable by group.\n");
rfbLog(" %s\n", xauth);
return 0;
}
}
X_LOCK;
xha = XListHosts(dpy, &n, &enabled);
X_UNLOCK;
if (! enabled) {
rfbLog("X access control is disabled, X clients can\n");
rfbLog(" connect from any host. Run 'xhost -'\n");
return 0;
}
if (xha) {
int i;
rfbLog("The following hosts can connect w/o X11 "
"auth:\n");
for (i=0; i<n; i++) {
if (xha[i].family == FamilyInternet) {
char *str = raw2host(xha[i].address,
xha[i].length);
char *ip = raw2ip(xha[i].address);
rfbLog(" %s/%s\n", str, ip);
free(str);
free(ip);
} else {
rfbLog(" unknown-%d\n", i+1);
}
}
XFree_wr(xha);
return 0;
}
if (getenv("XAUTHORITY")) {
xauth = strdup(getenv("XAUTHORITY"));
} else {
xauth = NULL;
}
set_env("XAUTHORITY", "/impossible/xauthfile");
fprintf(stderr, "\nChecking if display %s requires "
"XAUTHORITY\n", dpy_str);
fprintf(stderr, " -- (ignore any Xlib: errors that"
" follow) --\n");
dpy2 = XOpenDisplay_wr(dpy_str);
fflush(stderr);
fprintf(stderr, " -- (done checking) --\n\n");
if (xauth) {
set_env("XAUTHORITY", xauth);
free(xauth);
} else {
xauth = getenv("XAUTHORITY");
if (xauth) {
*(xauth-2) = '_'; /* yow */
}
}
if (dpy2) {
rfbLog("XAUTHORITY is not required on display.\n");
rfbLog(" %s\n", DisplayString(dpy));
XCloseDisplay_wr(dpy2);
dpy2 = NULL;
return 0;
}
}
return 1;
#endif /* NO_X11 */
}
#ifdef MACOSX
void macosxCG_keycode_inject(int down, int keycode);
#endif
int rc_npieces = 0;
/*
* Huge, ugly switch to handle all remote commands and queries
* -remote/-R and -query/-Q.
*/
char *process_remote_cmd(char *cmd, int stringonly) {
#if REMOTE_CONTROL
char *p = cmd;
char *co = "";
char buf[X11VNC_REMOTE_MAX];
int bufn = X11VNC_REMOTE_MAX;
int query = 0;
static char *prev_cursors_mode = NULL;
if (!query_default && !accept_remote_cmds) {
rfbLog("remote commands disabled: %s\n", cmd);
return NULL;
}
if (unixpw_in_progress) {
rfbLog("skip remote command: %s unixpw_in_progress.\n", cmd);
return NULL;
}
if (!query_default && priv_remote) {
if (! remote_control_access_ok()) {
rfbLog("** Disabling remote commands in -privremote "
"mode.\n");
accept_remote_cmds = 0;
return NULL;
}
}
strcpy(buf, "");
if (strstr(cmd, "cmd=") == cmd) {
p += strlen("cmd=");
if (strstr(p, "script:") == p) {
char *s, *q, **pieces, tmp[1024];
int k = 0, n = 0, dp = 1;
p += strlen("script:");
if (strstr(p, "file=") == p) {
FILE *f;
struct stat sbuf;
p += strlen("file=");
rfbLog("reading script from file '%s'\n", p);
if (stat(p, &sbuf) != 0) {
rfbLogPerror("stat");
return NULL;
}
f = fopen(p, "r");
if (f == NULL) {
rfbLogPerror("fopen");
return NULL;
}
p = (char *) calloc(sbuf.st_size + 1, 1);
dp = 0;
while (fgets(tmp, 1024, f) != NULL) {
char *c = strchr(tmp, '#');
if (c) *c = '\0';
if (strlen(p) + strlen(tmp) > (size_t) sbuf.st_size) {
break;
}
strcat(p, tmp);
}
fclose(f);
}
pieces = (char **) malloc(strlen(p) * sizeof(char *));
if (dp) {
s = strdup(p);
} else {
s = p;
}
q = strtok(s, ";");
while (q) {
char *t = lblanks(q);
if (strstr(t, "cmd=") != t && strstr(t, "qry=") != t) {
strcpy(tmp, "cmd=");
} else {
strcpy(tmp, "");
}
strncat(tmp, t, 1000);
pieces[n] = strdup(tmp);
n++;
q = strtok(NULL, ";");
}
free(s);
for (k=0; k < n; k++) {
char *c = pieces[k];
char *t = c + strlen(c) - 1; /* shortest is "cmd=" */
while (isspace((unsigned char) (*t))) {
*t = '\0';
if (t <= c) break;
t--;
}
if (k < n - 1) {
process_remote_cmd(c, 1);
} else {
process_remote_cmd(c, 0);
}
}
for (k=0; k<n; k++) {
free(pieces[k]);
}
free(pieces);
return NULL;
}
} else if (strstr(cmd, "qry=") == cmd) {
query = 1;
if (strchr(cmd, ',')) {
/* comma separated batch mode */
char *s, *q, *res, **pieces, tmp[1024];
int k = 0, n = 0;
pieces = (char **) malloc(strlen(cmd) * sizeof(char *));
s = strdup(cmd + strlen("qry="));
q = strtok(s, ",");
while (q) {
strcpy(tmp, "qry=");
strncat(tmp, q, 1000);
pieces[n] = strdup(tmp);
n++;
q = strtok(NULL, ",");
}
free(s);
rc_npieces = n;
strcpy(buf, "");
for (k=0; k < n; k++) {
res = process_remote_cmd(pieces[k], 1);
if (res && strlen(buf)+strlen(res)
>= X11VNC_REMOTE_MAX - 1) {
rfbLog("overflow in process_remote_cmd:"
" %s -- %s\n", buf, res);
free(res);
break;
}
if (res) {
strcat(buf, res);
free(res);
}
if (k < n - 1) {
strcat(buf, ",");
}
}
for (k=0; k<n; k++) {
free(pieces[k]);
}
free(pieces);
rc_npieces = 0;
goto qry;
}
p += strlen("qry=");