x11vnc: more -unixpw work. add -license, etc. options

runge 17 years ago
parent 9992160105
commit a7726a6f97

@ -1,3 +1,6 @@
2006-07-04 Karl Runge <runge@karlrunge.com>
* configure.ac: add getspnam.
2006-06-08 Karl Runge <runge@karlrunge.com>
* prepare_x11vnc_dist.sh: to 0.8.2

@ -445,7 +445,7 @@ AC_FUNC_VPRINTF
AC_CHECK_FUNCS([ftime gethostbyname gethostname gettimeofday inet_ntoa memmove memset mmap mkfifo select socket strchr strcspn strdup strerror strstr setsid setpgrp getpwuid getpwnam getuid geteuid setuid setgid seteuid setegid waitpid setutxent grantpt])
AC_CHECK_FUNCS([ftime gethostbyname gethostname gettimeofday inet_ntoa memmove memset mmap mkfifo select socket strchr strcspn strdup strerror strstr setsid setpgrp getpwuid getpwnam getspnam getuid geteuid setuid setgid seteuid setegid waitpid setutxent grantpt])
# check, if shmget is in cygipc.a

@ -1,3 +1,9 @@
2006-07-04 Karl Runge <runge@karlrunge.com>
* x11vnc: 2nd -accept popup with WAIT, and UNIX: info for unixpw
login. Use RFB_CLIENT_ON_HOLD for -unixpw. -unixpw white arrow
-license option. Use getspnam if getpwnam is short.
abbrevs sc=, cm, ck for user:opts.
2006-06-23 Karl Runge <runge@karlrunge.com>
* x11vnc: misc cleanup.

File diff suppressed because it is too large Load Diff

@ -48,6 +48,7 @@ void start_client_info_sock(char *host_port_cookie);
void send_client_info(char *str);
void adjust_grabs(int grab, int quiet);
void check_new_clients(void);
int accept_client(rfbClientPtr client);
static rfbClientPtr *client_match(char *str);
@ -58,7 +59,6 @@ static void ugly_geom(char *p, int *x, int *y);
static int ugly_window(char *addr, char *userhost, int X, int Y,
int timeout, char *mode, int accept);
static int action_match(char *action, int rc);
static int accept_client(rfbClientPtr client);
static void check_connect_file(char *file);
static void send_client_connect(void);
@ -133,7 +133,11 @@ char *list_clients(void) {
char *s = ident_username(cl);
if (s) free(s);
strcat(list, cd->username);
if (strstr(cd->username, "UNIX:") == cd->username) {
strcat(list, cd->username + strlen("UNIX:"));
} else {
strcat(list, cd->username);
strcat(list, ":");
if (cd->unixname[0] == '\0') {
strcat(list, "none");
@ -996,7 +1000,15 @@ static unsigned char t2x2_bits[] = {
if (accept) {
snprintf(strh, 100, "x11vnc: accept connection from %s?", addr);
char *ip = addr;
char *type = "accept";
if (unixpw && strstr(userhost, "UNIX:") != userhost) {
type = "unixpw";
if (openssl_last_ip) {
ip = openssl_last_ip;
snprintf(strh, 100, "x11vnc: %s connection from %s?", type, ip);
} else {
snprintf(strh, 100, "x11vnc: client disconnected from %s", addr);
@ -1282,7 +1294,7 @@ static void ugly_geom(char *p, int *x, int *y) {
* popup: use internal X widgets for prompting.
static int accept_client(rfbClientPtr client) {
int accept_client(rfbClientPtr client) {
char xmessage[200], *cmd = NULL;
char *addr = client->host;
@ -1327,6 +1339,14 @@ static int accept_client(rfbClientPtr client) {
mode = "both";
if (dpy == NULL && use_dpy && strstr(use_dpy, "WAIT:") ==
use_dpy) {
rfbLog("accept_client: warning allowing client under conditions:\n");
rfbLog(" -display WAIT:, dpy == NULL, -accept popup.\n");
rfbLog(" There will be another popup.\n");
return 1;
rfbLog("accept_client: using builtin popup for: %s\n", addr);
if ((ret = ugly_window(addr, userhost, x, y, timeout,
mode, 1))) {
@ -1526,6 +1546,7 @@ static int do_reverse_connect(char *str) {
rfbLog("reverse connections disabled in -ssl mode.\n");
return 0;
if (unixpw_in_progress) return 0;
/* copy in to host */
host = (char *) malloc(len+1);
@ -1579,11 +1600,15 @@ static int do_reverse_connect(char *str) {
* Break up comma separated list of hosts and call do_reverse_connect()
void reverse_connect(char *str) {
char *p, *tmp = strdup(str);
char *p, *tmp;
int sleep_between_host = 300;
int sleep_min = 1500, sleep_max = 4500, n_max = 5;
int n, tot, t, dt = 100, cnt = 0;
if (unixpw_in_progress) return;
tmp = strdup(str);
p = strtok(tmp, ", \t\r\n");
while (p) {
if ((n = do_reverse_connect(p)) != 0) {
@ -1887,7 +1912,6 @@ enum rfbNewClientAction new_client(rfbClientPtr client) {
last_event = last_input = time(NULL);
if (inetd) {
* Set this so we exit as soon as connection closes,
@ -2010,6 +2034,12 @@ if (0) fprintf(stderr, "SET ssl_helper_pid: %d\n", openssl_last_helper_pid);
unixpw_last_try_time = time(NULL);
unixpw_keystroke(0, 0, 1);
if (!unixpw_in_rfbPE) {
rfbLog("new client: %s in non-unixpw_in_rfbPE.\n",
/* always put client on hold even if unixpw_in_rfbPE is true */

@ -31,5 +31,6 @@ extern void start_client_info_sock(char *host_port_cookie);
extern void send_client_info(char *str);
extern void adjust_grabs(int grab, int quiet);
extern void check_new_clients(void);
extern int accept_client(rfbClientPtr client);
#endif /* _X11VNC_CONNECTIONS_H */

@ -30,6 +30,7 @@ int cursor_shape_updates_clients(rfbScreenInfoPtr s);
int cursor_pos_updates_clients(rfbScreenInfoPtr s);
void cursor_position(int x, int y);
void set_no_cursor(void);
void set_warrow_cursor(void);
int set_cursor(int x, int y, int which);
int check_x11_pointer(void);
@ -490,6 +491,7 @@ enum cursor_names {
@ -657,6 +659,7 @@ static void setup_cursors(void) {
alt_arrow = 1;
curs_copy(cursors[CURS_ARROW], &cur_arrow); n++;
curs_copy(cursors[CURS_WARROW], &cur_arrow2); n++;
curs_copy(cursors[CURS_ROOT], &cur_root); n++;
curs_copy(cursors[CURS_WM], &cur_fleur); n++;
@ -1744,6 +1747,10 @@ void set_no_cursor(void) {
void set_warrow_cursor(void) {
int set_cursor(int x, int y, int which) {
static int last = -1;
int changed_cursor = 0;

@ -27,6 +27,7 @@ extern int cursor_shape_updates_clients(rfbScreenInfoPtr s);
extern int cursor_pos_updates_clients(rfbScreenInfoPtr s);
extern void cursor_position(int x, int y);
extern void set_no_cursor(void);
extern void set_warrow_cursor(void);
extern int set_cursor(int x, int y, int which);
extern int check_x11_pointer(void);

@ -9,6 +9,7 @@
void print_help(int mode);
void print_license(void);
void xopen_display_fail_message(char *disp);
void nopassword_warning_msg(int gotloc);
@ -48,7 +49,7 @@ void print_help(int mode) {
" vncviewer -encodings 'copyrect tight zrle hextile' localhost:0\n"
"Also, use of a VNC password (-rfbauth or -passwdfile) is strongly recommend.\n"
"Also, use of a VNC password (-rfbauth or -passwdfile) is strongly recommended.\n"
"For additional info see: http://www.karlrunge.com/x11vnc/\n"
" and http://www.karlrunge.com/x11vnc/#faq\n"
@ -201,11 +202,11 @@ void print_help(int mode) {
" This enables a scheme were XGetImage() is not used\n"
" to retrieve the 8bpp data. Instead, it assumes that\n"
" the 8bpp data is in bits 25-32 of the 32bit X pixels.\n"
" There is no reason the X server should put the data\n"
" there for our poll requests, but some do and so the\n"
" extra steps to retrieve it can be skipped. Tested with\n"
" mga driver with XFree86/Xorg. For the default depth\n"
" 8 case this option is ignored.\n"
" There is no requirement that the X server should put\n"
" the data there for our poll requests, but some do and\n"
" so the extra steps to retrieve it can be skipped.\n"
" Tested with mga driver with XFree86/Xorg. For the\n"
" default depth 8 case this option is ignored.\n"
" To adjust how often XGetImage() is used to poll the\n"
" non-default visual regions for changes, use the option\n"
@ -314,6 +315,11 @@ void print_help(int mode) {
" change the global or per-client viewonly state the\n"
" filetransfer permissions will NOT change.\n"
" Note, to *enable* UltraVNC filetransfer (currently\n"
" disabled by default, this may change...) and to get it\n"
" to work you probably need to supply these libvncserver\n"
" options: \"-rfbversion 3.6 -permitfiletransfer\"\n"
"-http Instead of using -httpdir (see below) to specify\n"
" where the Java vncviewer applet is, have x11vnc try\n"
" to *guess* where the directory is by looking relative\n"
@ -357,7 +363,7 @@ void print_help(int mode) {
" file containing addresses or prefixes that is re-read\n"
" each time a new client connects. Lines can be commented\n"
" out with the \"#\" character in the usual way.\n"
"-localhost Same as \"-allow\".\n"
"-localhost Basically the same as \"-allow\".\n"
" Note: if you want to restrict which network interface\n"
" x11vnc listens on, see the -listen option below.\n"
@ -365,11 +371,11 @@ void print_help(int mode) {
" As a special case, the option \"-localhost\" implies\n"
" \"-listen localhost\".\n"
" For non-localhost -listen usage, if you use the remote\n"
" control mechanism (-R) to change the -listen interface\n"
" you may need to manually adjust the -allow list (and\n"
" vice versa) to avoid situations where no connections\n"
" (or too many) are allowed.\n"
" A rare case, but for non-localhost -listen usage, if\n"
" you use the remote control mechanism (-R) to change\n"
" the -listen interface you may need to manually adjust\n"
" the -allow list (and vice versa) to avoid situations\n"
" where no connections (or too many) are allowed.\n"
"-nolookup Do not use gethostbyname() or gethostbyaddr() to look up\n"
" host names or IP numbers. Use this if name resolution\n"
@ -420,7 +426,7 @@ void print_help(int mode) {
" limiting the readability of the file. In general,\n"
" the password file should not be readable by untrusted\n"
" users (BTW: neither should the VNC -rfbauth file:\n"
" it is NOT encrypted).\n"
" it is NOT encrypted, only obscured).\n"
" If the filename is prefixed with \"read:\" it will\n"
" periodically be checked for changes and reread.\n"
@ -549,7 +555,7 @@ void print_help(int mode) {
" per-user options after a \":\", e.g. \"fred:opts\"\n"
" where \"opts\" is a \"+\" separated list of\n"
" \"viewonly\", \"fullaccess\", \"input=XXXX\", or\n"
" \"deny\", e.g. \"karl,fred:viewonly,boss:input=M\".\n"
" \"deny\", e.g. \"karl,wally:viewonly,boss:input=M\".\n"
" For \"input=\" it is the K,M,B,C described under -input.\n"
" If a user in the list is \"*\" that means those\n"
@ -574,8 +580,10 @@ void print_help(int mode) {
" (e.g. \"ypcat passwd\"). NIS is not required for this\n"
" mode to work (only that getpwnam(3) return the encrypted\n"
" password is required), but it is unlikely it will work\n"
" for any other modern environment. All of the -unixpw\n"
" options and contraints apply.\n"
" for any other modern environment unless x11vnc is run\n"
" as root (which, btw, is often done when running x11vnc\n"
" from inetd and xdm/gdm/kdm). All of the -unixpw options\n"
" and contraints apply.\n"
"-display WAIT:... A special usage mode for the normal -display option.\n"
" Useful with -unixpw, but can be used independently\n"
@ -602,17 +610,17 @@ void print_help(int mode) {
" of the form XAUTHORITY=<file> or raw xauthority data for\n"
" the display (e.g. \"xauth extract - $DISPLAY\" output).\n"
" In the case of -unixpw, then the above command is run\n"
" as the user who just authenticated via the login and\n"
" password prompt.\n"
" In the case of -unixpw (but not -unixpw_nis), then the\n"
" above command is run as the user who just authenticated\n"
" via the login and password prompt.\n"
" Also in the case of -unixpw, the user logging in can\n"
" place a colon at the end of his username and supply\n"
" a few options: scale=, scale_cursor=, solid, id=,\n"
" clear_mods, clear_keys, repeat, or speeds= separated\n"
" by commas if there is more than one. After the user\n"
" logs in successfully, these options will be applied to\n"
" the VNC screen. For example,\n"
" a few options: scale=, scale_cursor= (or sc=), solid,\n"
" id=, clear_mods (or cm), clear_keys (or ck), repeat, or\n"
" speeds= separated by commas if there is more than one.\n"
" After the user logs in successfully, these options will\n"
" be applied to the VNC screen. For example,\n"
" login: fred:scale=3/4,repeat\n"
" Password: ...\n"
@ -635,17 +643,17 @@ void print_help(int mode) {
" A nice way to use WAIT:cmd=... is out of inetd(8)\n"
" (it automatically forks a new x11vnc for each user).\n"
" You can have the x11vnc inetd spawned process run as,\n"
" say, root or nobody. When run as root (for either\n"
" inetd or display manager), you can also supply the\n"
" option \"-users unixpw=\" to have the x11vnc process\n"
" switch to the user as well. Note: there will be a 2nd\n"
" SSL helper process that will not switch, but it is only\n"
" encoding and decoding the stream at that point.\n"
" As a special case, WAIT:cmd=FINDDISPLAY will run\n"
" a script that works on most Unixes to determine a\n"
" user's DISPLAY variable and xauthority data. To have\n"
" this default script printed to stdout (e.g. for\n"
" say, root or nobody. When run as root (for either inetd\n"
" or display manager), you can also supply the option\n"
" \"-users unixpw=\" to have the x11vnc process switch to\n"
" the user as well. Note: there will be a 2nd SSL helper\n"
" process that will not switch, but it is only encoding\n"
" and decoding the encrypted stream at that point.\n"
" As a special case, WAIT:cmd=FINDDISPLAY will run a\n"
" script that works on most Unixes to determine a user's\n"
" DISPLAY variable and xauthority data (see who(1)).\n"
" To have this default script printed to stdout (e.g. for\n"
" customization) run with WAIT:cmd=FINDDISPLAY-print\n"
" As another special case, WAIT:cmd=HTTPONCE will allow\n"
@ -1223,6 +1231,15 @@ void print_help(int mode) {
" use \"popup:N\" to modify the timeout to N seconds\n"
" (use 0 for no timeout).\n"
" In the case of \"popup\" and when the -unixpw option\n"
" is specified, then a *second* window will be popped\n"
" up after the user successfully logs in via his UNIX\n"
" password. This time the user will be identified as\n"
" UNIX:username@hostname, the \"UNIX:\" prefix indicates\n"
" which user the viewer logged as via -unixpw. The first\n"
" popup is only for whether to allow him to even *try*\n"
" to login via unix password.\n"
" If \"string\" is \"xmessage\" then an xmessage(1)\n"
" invocation is used for the command. xmessage must be\n"
" installed on the machine for this to work.\n"
@ -1450,6 +1467,8 @@ void print_help(int mode) {
"-h, -help Print this help text.\n"
"-?, -opts Only list the x11vnc options.\n"
"-V, -version Print program version and last modification date.\n"
"-license Print out license information. Same as -copying and\n"
" -warranty.\n"
"-dbg Instead of exiting after cleaning up, run a simple\n"
" \"debug crash shell\" when fatal errors are trapped.\n"
@ -3393,4 +3412,363 @@ void nopassword_warning_msg(int gotloc) {
void print_license(void) {
char license[] =
" Version 2, June 1991\n"
" Copyright (C) 1989, 1991 Free Software Foundation, Inc.\n"
" 59 Temple Place - Suite 330, Boston, MA\n"
" 02111-1307, USA.\n"
" Everyone is permitted to copy and distribute verbatim copies\n"
" of this license document, but changing it is not allowed.\n"
" Preamble\n"
" The licenses for most software are designed to take away your\n"
"freedom to share and change it. By contrast, the GNU General Public\n"
"License is intended to guarantee your freedom to share and change free\n"
"software--to make sure the software is free for all its users. This\n"
"General Public License applies to most of the Free Software\n"
"Foundation's software and to any other program whose authors commit to\n"
"using it. (Some other Free Software Foundation software is covered by\n"
"the GNU Library General Public License instead.) You can apply it to\n"
"your programs, too.\n"
" When we speak of free software, we are referring to freedom, not\n"
"price. Our General Public Licenses are designed to make sure that you\n"
"have the freedom to distribute copies of free software (and charge for\n"
"this service if you wish), that you receive source code or can get it\n"
"if you want it, that you can change the software or use pieces of it\n"
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" To protect your rights, we need to make restrictions that forbid\n"
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"all its terms and conditions for copying, distributing or modifying\n"
"the Program or works based on it.\n"
" 6. Each time you redistribute the Program (or any work based on the\n"
"Program), the recipient automatically receives a license from the\n"
"original licensor to copy, distribute or modify the Program subject to\n"
"these terms and conditions. You may not impose any further\n"
"restrictions on the recipients' exercise of the rights granted herein.\n"
"You are not responsible for enforcing compliance by third parties to\n"
"this License.\n"
" 7. If, as a consequence of a court judgment or allegation of patent\n"
"infringement or for any other reason (not limited to patent issues),\n"
"conditions are imposed on you (whether by court order, agreement or\n"
"otherwise) that contradict the conditions of this License, they do not\n"
"excuse you from the conditions of this License. If you cannot\n"
"distribute so as to satisfy simultaneously your obligations under this\n"
"License and any other pertinent obligations, then as a consequence you\n"
"may not distribute the Program at all. For example, if a patent\n"
"license would not permit royalty-free redistribution of the Program by\n"
"all those who receive copies directly or indirectly through you, then\n"
"the only way you could satisfy both it and this License would be to\n"
"refrain entirely from distribution of the Program.\n"
"If any portion of this section is held invalid or unenforceable under\n"
"any particular circumstance, the balance of the section is intended to\n"
"apply and the section as a whole is intended to apply in other\n"
"It is not the purpose of this section to induce you to infringe any\n"
"patents or other property right claims or to contest validity of any\n"
"such claims; this section has the sole purpose of protecting the\n"
"integrity of the free software distribution system, which is\n"
"implemented by public license practices. Many people have made\n"
"generous contributions to the wide range of software distributed\n"
"through that system in reliance on consistent application of that\n"
"system; it is up to the author/donor to decide if he or she is willing\n"
"to distribute software through any other system and a licensee cannot\n"
"impose that choice.\n"
"This section is intended to make thoroughly clear what is believed to\n"
"be a consequence of the rest of this License.\n"
" \n"
" 8. If the distribution and/or use of the Program is restricted in\n"
"certain countries either by patents or by copyrighted interfaces, the\n"
"original copyright holder who places the Program under this License\n"
"may add an explicit geographical distribution limitation excluding\n"
"those countries, so that distribution is permitted only in or among\n"
"countries not thus excluded. In such case, this License incorporates\n"
"the limitation as if written in the body of this License.\n"
" 9. The Free Software Foundation may publish revised and/or new versions\n"
"of the General Public License from time to time. Such new versions will\n"
"be similar in spirit to the present version, but may differ in detail to\n"
"address new problems or concerns.\n"
"Each version is given a distinguishing version number. If the Program\n"
"specifies a version number of this License which applies to it and \"any\n"
"later version\", you have the option of following the terms and conditions\n"
"either of that version or of any later version published by the Free\n"
"Software Foundation. If the Program does not specify a version number of\n"
"this License, you may choose any version ever published by the Free Software\n"
" 10. If you wish to incorporate parts of the Program into other free\n"
"programs whose distribution conditions are different, write to the author\n"
"to ask for permission. For software which is copyrighted by the Free\n"
"Software Foundation, write to the Free Software Foundation; we sometimes\n"
"make exceptions for this. Our decision will be guided by the two goals\n"
"of preserving the free status of all derivatives of our free software and\n"
"of promoting the sharing and reuse of software generally.\n"
" \n"
" Appendix: How to Apply These Terms to Your New Programs\n"
" If you develop a new program, and you want it to be of the greatest\n"
"possible use to the public, the best way to achieve this is to make it\n"
"free software which everyone can redistribute and change under these terms.\n"
" To do so, attach the following notices to the program. It is safest\n"
"to attach them to the start of each source file to most effectively\n"
"convey the exclusion of warranty; and each file should have at least\n"
"the \"copyright\" line and a pointer to where the full notice is found.\n"
" <one line to give the program's name and a brief idea of what it does.>\n"
" Copyright (C) 19yy <name of author>\n"
" This program is free software; you can redistribute it and/or modify\n"
" it under the terms of the GNU General Public License as published by\n"
" the Free Software Foundation; either version 2 of the License, or\n"
" (at your option) any later version.\n"
" This program is distributed in the hope that it will be useful,\n"
" but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
" GNU General Public License for more details.\n"
" You should have received a copy of the GNU General Public License\n"
" along with this program; if not, write to the Free Software\n"
" Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.\n"
"Also add information on how to contact you by electronic and paper mail.\n"
"If the program is interactive, make it output a short notice like this\n"
"when it starts in an interactive mode:\n"
" Gnomovision version 69, Copyright (C) 19yy name of author\n"
" Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.\n"
" This is free software, and you are welcome to redistribute it\n"
" under certain conditions; type `show c' for details.\n"
"The hypothetical commands `show w' and `show c' should show the appropriate\n"
"parts of the General Public License. Of course, the commands you use may\n"
"be called something other than `show w' and `show c'; they could even be\n"
"mouse-clicks or menu items--whatever suits your program.\n"
"You should also get your employer (if you work as a programmer) or your\n"
"school, if any, to sign a \"copyright disclaimer\" for the program, if\n"
"necessary. Here is a sample; alter the names:\n"
" Yoyodyne, Inc., hereby disclaims all copyright interest in the program\n"
" `Gnomovision' (which makes passes at compilers) written by James Hacker.\n"
" <signature of Ty Coon>, 1 April 1989\n"
" Ty Coon, President of Vice\n"
"This General Public License does not permit incorporating your program into\n"
"proprietary programs. If your program is a subroutine library, you may\n"
"consider it more useful to permit linking proprietary applications with the\n"
"library. If this is what you want to do, use the GNU Library General\n"
"Public License instead of this License.\n"
char top[] =
"x11vnc: a VNC server for X displays. %s\n"
"Copyright (c) 2002-2006 Karl J. Runge <runge@karlrunge.com>\n"
"All rights reserved.\n"
dup2(1, 2);
fprintf(stderr, top, lastmod);
fprintf(stderr, "%s", license);

@ -4,6 +4,7 @@
/* -- help.h -- */
extern void print_help(int mode);
extern void print_license(void);
extern void xopen_display_fail_message(char *disp);
extern void nopassword_warning_msg(int gotloc);

@ -1,6 +1,8 @@
/* -- inet.c -- */
#include "x11vnc.h"
#include "unixpw.h"
#include "sslhelper.h"
* Simple utility to map host name to dotted IP address. Ignores aliases.
@ -22,7 +24,6 @@ int have_ssh_env(void);
static int get_port(int sock, int remote);
static char *get_host(int sock, int remote);
char *host2ip(char *host) {
struct hostent *hp;
struct sockaddr_in addr;
@ -291,7 +292,11 @@ char *ident_username(rfbClientPtr client) {
if (!strcmp(user, "unknown-user") && cd && cd->unixname[0] != '\0') {
user = cd->unixname;
newhost = ip2host(client->host);
if (unixpw && openssl_last_ip && strstr("UNIX:", user) != user) {
newhost = ip2host(openssl_last_ip);
} else {
newhost = ip2host(client->host);
len = strlen(user) + 1 + strlen(newhost) + 1;
str = (char *) malloc(len);
sprintf(str, "%s@%s", user, newhost);

@ -617,7 +617,7 @@ void pointer(int mask, int x, int y, rfbClientPtr client) {
last_x = x;
last_y = y;
if (mask >= 0 && unixpw && unixpw_in_progress) {
if (unixpw && unixpw_in_progress) {

@ -23,6 +23,7 @@
#include "userinput.h"
#include "keyboard.h"
#include "selection.h"
#include "unixpw.h"
int send_remote_cmd(char *cmd, int query, int wait);
int do_remote_query(char *remote_cmd, char *query_cmd, int remote_sync,
@ -633,6 +634,10 @@ char *process_remote_cmd(char *cmd, int stringonly) {
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()) {

@ -1294,6 +1294,8 @@ static int copy_tiles(int tx, int ty, int nt) {
char *src, *dst, *s_src, *s_dst, *m_src, *m_dst;
char *h_src, *h_dst;
if (unixpw_in_progress) return 0;
if (! first_line) {
/* allocate arrays first time in. */
int n = ntiles_x + 1;
@ -1626,6 +1628,8 @@ static int copy_all_tiles(void) {
int x, y, n, m;
int diffs = 0, ct;
if (unixpw_in_progress) return 0;
for (y=0; y < ntiles_y; y++) {
for (x=0; x < ntiles_x; x++) {
n = x + y * ntiles_x;
@ -1672,6 +1676,8 @@ static int copy_all_tile_runs(void) {
int in_run = 0, run = 0;
int ntave = 0, ntcnt = 0;
if (unixpw_in_progress) return 0;
for (y=0; y < ntiles_y; y++) {
for (x=0; x < ntiles_x + 1; x++) {
n = x + y * ntiles_x;
@ -1742,6 +1748,8 @@ static int copy_tiles_backward_pass(void) {
int x, y, n, m;
int diffs = 0, ct;
if (unixpw_in_progress) return 0;
for (y = ntiles_y - 1; y >= 0; y--) {
for (x = ntiles_x - 1; x >= 0; x--) {
n = x + y * ntiles_x; /* number of this tile */
@ -1783,6 +1791,8 @@ static int copy_tiles_additional_pass(void) {
int x, y, n;
int diffs = 0, ct;
if (unixpw_in_progress) return 0;
for (y=0; y < ntiles_y; y++) {
for (x=0; x < ntiles_x; x++) {
n = x + y * ntiles_x; /* number of this tile */
@ -1974,6 +1984,7 @@ int copy_screen(void) {
if (! fs_factor) {
return 0;
if (unixpw_in_progress) return 0;
block_size = (dpy_x * (dpy_y/fs_factor) * pixelsize);
@ -2686,6 +2697,9 @@ int scan_for_updates(int count_only) {
old_copy_tile = 0;
if (unixpw_in_progress) return 0;
if (old_copy_tile) {
tile_diffs = copy_all_tiles();
} else {

@ -31,6 +31,7 @@ int openssl_sock = -1;
int openssl_port_num = 0;
int https_sock = -1;
pid_t openssl_last_helper_pid = 0;
char *openssl_last_ip = NULL;
void raw_xfer(int csock, int s_in, int s_out);
@ -1030,7 +1031,6 @@ if (db) fprintf(stderr, "waitpid(%d) 2\n", helpers[i]);
/* AUDIT */
static int is_ssl_readable(int s_in, time_t last_https, char *last_get,
int mode) {
int nfd, db = 0;
@ -1063,7 +1063,7 @@ static int is_ssl_readable(int s_in, time_t last_https, char *last_get,
if (time(NULL) < last_https + 30) {
tv.tv_sec = 8;
if (strstr(last_get, "VncViewer")) {
if (last_get && strstr(last_get, "VncViewer")) {
tv.tv_sec = 4;
@ -1099,6 +1099,9 @@ static int watch_for_http_traffic(char *buf_a, int *n_a) {
if (getenv("ACCEPT_OPENSSL_DEBUG")) {
db = atoi(getenv("ACCEPT_OPENSSL_DEBUG"));
if (! buf_a || ! n_a) {
return 0;
buf = (char *) calloc((ABSIZE+1), 1);
*n_a = 0;
@ -1137,7 +1140,9 @@ static int watch_for_http_traffic(char *buf_a, int *n_a) {
if (n2 >= 0) {
n += n2;
*n_a = n;
if (db) fprintf(stderr, "watch_for_http_traffic readmore: %d\n", n2);
if (n > 0) {
@ -1180,6 +1185,7 @@ static int wait_conn(int sock) {
int proxy_hack(int vncsock, int listen, int s_in, int s_out, char *cookie,
int mode) {
int sock1, db = 0;
char reply[] = "HTTP/1.1 200 OK\r\n"
"Content-Type: octet-stream\r\n"
"Pragma: no-cache\r\n\r\n";
@ -1187,7 +1193,6 @@ int proxy_hack(int vncsock, int listen, int s_in, int s_out, char *cookie,
"Content-Type: octet-stream\r\n"
"Content-Length: 9\r\n"
"Pragma: no-cache\r\n\r\nGO_AHEAD\n";
int sock1, db = 0;
rfbLog("SSL: accept_openssl: detected https proxied connection"
" request.\n");
@ -1208,20 +1213,24 @@ int proxy_hack(int vncsock, int listen, int s_in, int s_out, char *cookie,
} else if (mode == OPENSSL_HTTPS) {
listen = https_sock;
} else {
/* inetd */
return 0;
sock1 = wait_conn(listen);
if (csock_timeout_sock < 0 || sock1 < 0) {
return 0;
if (db) fprintf(stderr, "got applet input sock1: %d\n", sock1);
if (! ssl_init(sock1, sock1)) {
if (db) fprintf(stderr, "ssl_init FAILED\n");
SSL_write(ssl, reply, strlen(reply));
@ -1241,21 +1250,23 @@ if (db) fprintf(stderr, "buf: '%s'\n", buf);
write(vncsock, cookie, strlen(cookie));
if (cookie) {
write(vncsock, cookie, strlen(cookie));
ssl_xfer(vncsock, sock1, sock1, 0);
return 1;
void accept_openssl(int mode) {
int sock = -1, cport, csock, vsock, listen = -1;
int sock = -1, listen = -1, cport, csock, vsock;
int status, n, i, db = 0;
struct sockaddr_in addr;
socklen_t addrlen = sizeof(addr);
char cookie[128], rcookie[128], *name;
rfbClientPtr client;
pid_t pid;
char uniq[] = "__evilrats__";
char cookie[128], rcookie[128], *name = NULL;
static time_t last_https = 0;
static char last_get[128];
static int first = 1;
@ -1267,7 +1278,7 @@ void accept_openssl(int mode) {
if (first) {
last_get[i] = '\0';
cookie[i] = '\0';
cookie[i] = '\0';
rcookie[i] = '\0';
first = 0;
@ -1280,26 +1291,35 @@ void accept_openssl(int mode) {
if (mode == OPENSSL_INETD) {
ssl_initialized = 1;
} else if (mode == OPENSSL_VNC && openssl_sock >= 0) {
} else if (mode == OPENSSL_VNC) {
sock = accept(openssl_sock, (struct sockaddr *)&addr, &addrlen);
listen = openssl_sock;
if (sock < 0) {
rfbLog("SSL: accept_openssl: accept connection failed\n");
listen = openssl_sock;
} else if (mode == OPENSSL_HTTPS && https_sock >= 0) {
} else if (mode == OPENSSL_HTTPS) {
sock = accept(https_sock, (struct sockaddr *)&addr, &addrlen);
listen = https_sock;
if (sock < 0) {
rfbLog("SSL: accept_openssl: accept connection failed\n");
listen = https_sock;
if (db) fprintf(stderr, "SSL: accept_openssl: sock: %d\n", sock);
if (openssl_last_ip) {
openssl_last_ip = NULL;
if (mode == OPENSSL_INETD) {
openssl_last_ip = get_remote_host(fileno(stdin));
} else {
openssl_last_ip = get_remote_host(sock);
/* now make a listening socket for child to connect back to us by: */
@ -1339,11 +1359,23 @@ void accept_openssl(int mode) {
if (mode != OPENSSL_INETD) {
name = get_remote_host(sock);
} else {
name = strdup("inetd-connection");
openssl_last_ip = get_remote_host(fileno(stdin));
if (openssl_last_ip) {
name = strdup(openssl_last_ip);
} else {
name = strdup("unknown");
if (name) {
rfbLog("SSL: spawning helper process to handle: %s\n", name);
if (mode == OPENSSL_INETD) {
rfbLog("SSL: (inetd) spawning helper process "
"to handle: %s\n", name);
} else {
rfbLog("SSL: spawning helper process to handle: "
"%s\n", name);
name = NULL;
/* now fork the child to handle the SSL: */
@ -1361,7 +1393,7 @@ void accept_openssl(int mode) {
} else if (pid == 0) {
int s_in, s_out, httpsock = -1;
int vncsock, sslsock = sock;
int vncsock;
int i, have_httpd = 0;
int f_in = fileno(stdin);
int f_out = fileno(stdout);
@ -1376,7 +1408,7 @@ void accept_openssl(int mode) {
if (i == sslsock) {
if (i == sock) {
if (i == 2) {
@ -1400,7 +1432,6 @@ void accept_openssl(int mode) {
if (vncsock < 0) {
rfbLog("SSL: ssl_helper[%d]: could not connect"
" back to: %d\n", getpid(), cport);
@ -1424,6 +1455,10 @@ void accept_openssl(int mode) {
* SSL socket.
if (! screen) {
if (screen->httpListenSock >= 0 && screen->httpPort > 0) {
have_httpd = 1;
@ -1470,6 +1505,7 @@ void accept_openssl(int mode) {
if (db) fprintf(stderr, "watch_for_http_traffic\n");
is_http = watch_for_http_traffic(buf, &n);
if (is_http < 0 || is_http == 0) {
@ -1484,7 +1520,9 @@ void accept_openssl(int mode) {
goto wrote_cookie;
if (db) fprintf(stderr, "is_http: %d n: %d\n", is_http, n);
if (db) fprintf(stderr, "is_http: %d n: %d\n",
is_http, n);
if (db) fprintf(stderr, "buf: '%s'\n", buf);
if (strstr(buf, "/request.https.vnc.connection")) {
@ -1497,6 +1535,8 @@ void accept_openssl(int mode) {
* instead of a direct SSL connection.
rfbLog("Handling VNC request via https GET. [%d]\n", getpid());
/* AUDIT */
if (strstr(buf, "/reverse.proxy")) {
char *buf;
int n, ptr;
@ -1736,6 +1776,10 @@ if (db) fprintf(stderr, "iface: %s\n", iface);
inetd_client = client;
client->clientGoneHook = client_gone;
if (openssl_last_ip &&
strpbrk(openssl_last_ip, "0123456789") == openssl_last_ip) {
client->host = strdup(openssl_last_ip);
} else {
rfbLog("SSL: accept_openssl: rfbNewClient failed.\n");

@ -12,6 +12,7 @@ extern int openssl_sock;
extern int openssl_port_num;
extern int https_sock;
extern pid_t openssl_last_helper_pid;
extern char *openssl_last_ip;
extern void raw_xfer(int csock, int s_in, int s_out);

@ -5,6 +5,7 @@
extern int grantpt(int);
extern int unlockpt(int);
extern char *ptsname(int);
/* XXX remove need for this */
extern char *crypt(const char*, const char *);
@ -14,6 +15,8 @@ extern char *crypt(const char*, const char *);
#include "xinerama.h"
#include "connections.h"
#include "user.h"
#include "connections.h"
#include "cursor.h"
#include <rfb/default8x16.h>
@ -25,6 +28,9 @@ extern char *crypt(const char*, const char *);
#include <shadow.h>
@ -65,6 +71,7 @@ static void set_db(void);
static void unixpw_verify(char *user, char *pass);
int unixpw_in_progress = 0;
int unixpw_in_rfbPE = 0;
int unixpw_login_viewonly = 0;
time_t unixpw_last_try_time = 0;
rfbClientPtr unixpw_client = NULL;
@ -143,6 +150,8 @@ void unixpw_screen(int init) {
char_y = y;
char_col = strlen(log);
char_row = 0;
if (scaling) {
@ -347,11 +356,32 @@ int crypt_verify(char *user, char *pass) {
return 0;
if (db > 1) fprintf(stderr, "realpw='%s'\n", realpw);
if (strlen(realpw) < 10) {
/* e.g. "x", try getspnam(), sometimes root for inetd, etc */
struct spwd *sp = getspnam(user);
if (sp != NULL && sp->sp_pwdp != NULL) {
if (db) fprintf(stderr, "using getspnam()\n");
realpw = sp->sp_pwdp;
} else {
if (db) fprintf(stderr, "skipping getspnam()\n");
n = strlen(pass);
if (pass[n-1] == '\n') {
pass[n-1] = '\0';
/* XXX remove need for cast */
cr = (char *) crypt(pass, realpw);
if (db > 1) {
fprintf(stderr, "user='%s' pass='%s' realpw='%s' cr='%s'\n",
user, pass, realpw, cr ? cr : "(null)");
if (cr == NULL) {
return 0;
@ -793,6 +823,7 @@ static void unixpw_verify(char *user, char *pass) {
char li[] = "Login incorrect";
char log[] = "login: ";
char *colon = NULL;
ClientData *cd = NULL;
if (db) fprintf(stderr, "unixpw_verify: '%s' '%s'\n", user, db > 1 ? pass : "********");
rfbLog("unixpw_verify: %s\n", user);