x11vnc: make -display WAIT + -unixpw work on Solaris.

x11vnc/ChangeLog

+2006-06-09  Karl Runge <runge@karlrunge.com>
+	* x11vnc: make -display WAIT + -unixpw work on Solaris.
+
 2006-06-08  Karl Runge <runge@karlrunge.com>
 	* x11vnc: XOpenDisplay wrapper for raw xauth data, -unixpw 
 	  su_verify() to run any cmd, -users unixpw= mode. -display WAIT:...

x11vnc/README

 
-x11vnc README file                         Date: Thu Jun  8 18:47:45 EDT 2006
+x11vnc README file                         Date: Thu Jun  8 23:48:35 EDT 2006
 
 The following information is taken from these URLs:
 
@@ -3329,9 +3329,9 @@ service x11vncservice
    x11vnc's (see [392]this example).
 
    The [393]-display WAIT option waits until a VNC viewer is connected
-   before connecting to the X display, and can also be used to run a
+   before attaching to the X display, and can also be used to run a
    command that returns the DISPLAY and XAUTHORITY data. So one could
-   supply "-display WAIT:find_display" where the script find_display
+   supply "-display WAIT:cmd=find_display" where the script find_display
    might look something like:
 #!/bin/sh
 
@@ -3367,7 +3367,7 @@ xauth extract - "$display" 2>/dev/null
 
 exit 0
 
-   A some point a standard script created and will be used by default
+   At some point a standard script like the above will be used by default
    under "-display WAIT:cmd=FINDDISPLAY". The format the script returns
    is the first line is DISPLAY=:disp and any remaining lines are either
    XAUTHORITY=file or raw xauth data (the above example does the latter).
@@ -3396,10 +3396,10 @@ exit 0
 
    Note that [397]SSL is required for this mode because otherwise the
    unix password would be passed in clear text. In general -unixpw is not
-   required for this scheme, but it is convenient because it determines
-   who the user is whose display should be sought. Otherwise the
-   find_display script would have to use some scheme to work all of this
-   out.
+   required for this sort of scheme, but it is convenient because it
+   determines exactly who the user is whose display should be sought.
+   Otherwise the find_display script would have to use some method to
+   work out DISPLAY, XAUTHORITY, etc.
 
 
    Q-52: Can I have x11vnc restart itself after it terminates?
@@ -3436,7 +3436,7 @@ exit 0
    free to customize the default index.vnc file in the classes directory.
 
    As of May/2005 the [400]-http option will try to guess where the Java
-   classes jar file is by looking a expected locations.
+   classes jar file is by looking in expected locations.
 
    Also note that if you wanted to, you could also start the Java viewer
    entirely from the viewer-side by having the jar file there and using

x11vnc/unixpw.c

@@ -546,7 +546,13 @@ if (db) fprintf(stderr, "slave is: %s fd=%d\n", slave, fd);
 		/* synchronize with parent: */
 		write(2, "C", 1);
 
-		execlp(bin_su, bin_su, user, "-c", bin_true, (char *) NULL);
+		if (cmd) {
+			execlp(bin_su, bin_su, "-", user, "-c",
+			    bin_true, (char *) NULL);
+		} else {
+			execlp(bin_su, bin_su, user, "-c",
+			    bin_true, (char *) NULL);
+		}
 		exit(1);
 	}
 	/* parent */

x11vnc/user.c

@@ -1082,15 +1082,15 @@ int wait_for_client(int *argc, char** argv, int http) {
 		memset(line2, 0, 16384);
 
 		if (unixpw) {
-			int res = 0, k, j;
+			int res = 0, k, j, i;
 			char line[18000];
 
 			memset(line, 0, 18000);
 
 			if (keep_unixpw_user && keep_unixpw_pass) {
 				n = 18000;
-				res = su_verify(keep_unixpw_user, keep_unixpw_pass,
-				    cmd, line, &n);
+				res = su_verify(keep_unixpw_user,
+				    keep_unixpw_pass, cmd, line, &n);
 				strzero(keep_unixpw_user);
 				strzero(keep_unixpw_pass);
 			}
@@ -1100,17 +1100,35 @@ int wait_for_client(int *argc, char** argv, int http) {
 				rfbLog("wait_for_client: cmd failed: %s\n", cmd);
 				clean_up_exit(1);
 			}
+
+			/*
+			 * we need to hunt for DISPLAY= since there may be
+			 * a login banner or something at the beginning.
+			 */
+			q = strstr(line, "DISPLAY=");
+			if (! q) {
+				q = line;
+			}
+			n -= (q - line);
+
 			for (k = 0; k < 1024; k++) {
-				line1[k] = line[k];
-				if (line[k] == '\n') {
+				line1[k] = q[k];
+				if (q[k] == '\n') {
 					k++;
 					break;
 				}
 			}
 			n -= k;
-			while (j < 16384) {
-				line2[j] = line[k+j];
-				j++;
+			i = 0;
+			for (j = 0; j < 16384; j++) {
+				if (j < 16384 - 1) {
+					/* xauth data, assume pty added CR */
+					if (q[k+j] == '\r' && q[k+j+1] == '\n') {
+						continue;
+					}
+				}
+				line2[i] = q[k+j];
+				i++;
 			}
 		} else {
 			FILE *p = popen(cmd, "r");