Advanced Rogue family: overhaul privilege handling.

Advanced Rogue 5 and 7, and XRogue, now open the scorefile and logfile
at startup and then drop any set[ug]id privileges if the savedir is not
being used.

arogue7/main.c

@@ -16,6 +16,8 @@
 #include <stdlib.h>
 #include <string.h>
 #include <signal.h>
+#include <sys/types.h>
+#include <fcntl.h>
 #ifdef BSD
 #include <sys/time.h>
 #else
@@ -31,7 +33,9 @@ extern struct uwdata wdata, oldwin;
 extern char oldtext[WTXTNUM][WTXTLEN];
 #endif
 
-#define SAVEDIR "."
+int scorefd = -1;
+FILE *logfile = NULL;
+void open_records(void);
 
 main(argc, argv, envp)
 char **argv;
@@ -91,6 +95,8 @@ char **envp;
     if (whoami[0] == '\0')
         strucpy(whoami, md_getusername(), strlen(md_getusername()));
 
+    open_records();
+
     /*
      * check for print-score option
      */
@@ -161,6 +167,10 @@ char **envp;
         if (!restore(file_name, envp))
             exit(1);
     }
+    else
+    {
+        md_normaluser();
+    }
     if (argc == 2)
 	if (!restore(argv[1], envp)) /* Note: restore will never return */
 	    exit(1);
@@ -539,6 +549,18 @@ setup()
     nonl();
 }
 
+void
+open_records(void)
+{
+    if (scorefd == -1)
+        scorefd = open(score_file, O_RDWR | O_CREAT, 0666);
+#ifdef LOGFILE
+    if (logfile == NULL)
+        logfile = fopen(LOGFILE, "a");
+#endif
+    return;
+}
+
 /*
  * playit:
  *	The main loop of the program.  Loop until the game is over,