===================================================================
RCS file: /home/cvs/OpenXM/src/oxc/oxc.c,v
retrieving revision 1.4
retrieving revision 1.8
diff -u -p -r1.4 -r1.8
--- OpenXM/src/oxc/oxc.c	2000/11/28 04:02:56	1.4
+++ OpenXM/src/oxc/oxc.c	2000/12/14 03:14:01	1.8
@@ -1,5 +1,5 @@
 /* -*- mode: C -*- */
-/* $OpenXM: OpenXM/src/oxc/oxc.c,v 1.3 2000/11/18 06:03:42 ohara Exp $ */
+/* $OpenXM: OpenXM/src/oxc/oxc.c,v 1.7 2000/12/14 01:35:58 ohara Exp $ */
 
 #include <stdio.h>
 #include <stdlib.h>
@@ -25,13 +25,12 @@ int oxf_connect_dup(char *remote, short port)
 
 int lf_oxc_open_main(char *cmd, short port)
 {
-    int pid = 0;
-    if (cmd != NULL && (pid = fork()) == 0) {
+    pid_t pid;
+    if ((pid = fork()) == 0) {
         oxf_connect_dup(remote_host, port);
         fprintf(stderr, "oxc: oxc_open(%s, %d)\n", cmd, port);
         execlp(cmd, cmd, NULL);
     }
-    fprintf(stderr, "oxc: cannnot oxc_open(%s, %d).\n", cmd, port);
     return pid; /* if error, pid == 0 */
 }
 
@@ -48,27 +47,36 @@ OXFILE *connection()
 /* xterm, kterm, rxvt, gnome-terminal, ... */
 static char *xterminal()
 {
-	char *e = getenv("OpenXM_XTERM");
-	return (e != NULL)? e: "xterm";
+    char *e = getenv("OpenXM_XTERM");
+    return (e != NULL)? e: "xterm";
 }
 
 static int basic0[] =  {
-	CMO_ERROR2,
-	CMO_NULL,
-	CMO_INT32,
-	CMO_DATUM,
-	CMO_STRING,
-	CMO_MATHCAP,
-	CMO_LIST,
-	0}; 
+    CMO_ERROR2,
+    CMO_NULL,
+    CMO_INT32,
+    CMO_DATUM,
+    CMO_STRING,
+    CMO_MATHCAP,
+    CMO_LIST,
+    0
+}; 
 
+/* We assume that data has the following format:
+   LENGTH hostname '\0' port '\0' password '\0'
+   where LENGTH is an integer with network byte order and its value
+   equals to the sum of the length of three data above.
+*/
+
+void pipe_read_info(char **hostname, int *port, char **password);
+
 int main(int argc, char *argv[])
 {
     OXFILE *oxfp;
-	char *port_s = "";
-	char *xterm =  xterminal();
-	char *myname = argv[0];
-	int oxlog = 0;
+    char *port_s = "";
+    char *xterm =  xterminal();
+    char *myname = argv[0];
+    int oxlog = 0;
     int c;
 
     while ((c = getopt(argc, argv, "c:p:h:x")) != -1) {
@@ -78,15 +86,16 @@ int main(int argc, char *argv[])
             break;
         case 'c':
             password = optarg;
+            
             break;
         case 'p':
             port = atoi(optarg);
-			port_s = optarg;
+            port_s = optarg;
             break;
-		case 'x':
-			if (getenv("DISPLAY") != NULL) {
-				oxlog = 1;
-			}
+        case 'x':
+            if (getenv("DISPLAY") != NULL) {
+                oxlog = 1;
+            }
             break;
         default:
         }
@@ -94,20 +103,24 @@ int main(int argc, char *argv[])
     argc -= optind;
     argv += optind;
 
-	if (oxlog) {
-		execlp(xterm, xterm, "-e", myname, 
-			   "-h", remote_host, "-p", port_s, "-c", password);
-	}
+    if (strlen(remote_host) == 0) {
+        pipe_read_info(&remote_host, &port, &password);
+        port_s = malloc(32);
+        sprintf(port_s, "%d", port);
+    }
+    if (oxlog) {
+        execlp(xterm, xterm, "-e", myname, 
+               "-h", remote_host, "-p", port_s, "-c", password, NULL);
+		fprintf(stderr, "oxc:: cannot exec \"%s oxc ...\"\n", xterm);
+    }
+
     fprintf(stderr, "start connection!\n");
-    if (strlen(remote_host) == 0 || strlen(password) == 0 || port == 0) {
-        fprintf(stderr, "oxc: invalid arguments.\n");
-		fprintf(stderr, "usage: oxc -p port -h host -c password.\n");
-    }else if ((oxfp = connection()) == NULL) {
+    if ((oxfp = connection()) == NULL) {
         fprintf(stderr, "oxc: cannot connect.\n");
     }else {
-		fprintf(stderr, "oxc: oxfp = %p, fd = %d\n", oxfp, oxfp->fd);
-	    mathcap_init(20001006, "v2000.10.06", "oxc", basic0, NULL);
-		sm(oxfp);
-	}
+        fprintf(stderr, "oxc: oxfp = %p, fd = %d\n", oxfp, oxfp->fd);
+        mathcap_init(20001006, "v2000.10.06", "oxc", basic0, NULL);
+        sm(oxfp);
+    }
     return 0;
 }