[src/trunk]: src/games/battlestar Drop setgid privileges early. Derived from ...

[hubertf <hubertf%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/9137f0793ac5
branches:  trunk
changeset: 474797:9137f0793ac5
user:      hubertf <hubertf%NetBSD.org@localhost>
date:      Wed Jul 21 03:56:53 1999 +0000

description:
Drop setgid privileges early. Derived from OpenBSD and sent in as PR 5970
by Joseph Myers <jsm28%cam.ac.uk@localhost>.

diffstat:

 games/battlestar/battlestar.c |   7 +++++--
 games/battlestar/com6.c       |  28 ++++++++++++++++++----------
 games/battlestar/extern.h     |   3 ++-
 3 files changed, 25 insertions(+), 13 deletions(-)

diffs (109 lines):

diff -r 1201ef8ae802 -r 9137f0793ac5 games/battlestar/battlestar.c
--- a/games/battlestar/battlestar.c     Wed Jul 21 03:32:53 1999 +0000
+++ b/games/battlestar/battlestar.c     Wed Jul 21 03:56:53 1999 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: battlestar.c,v 1.6 1997/10/11 02:06:55 lukem Exp $     */
+/*     $NetBSD: battlestar.c,v 1.7 1999/07/21 03:56:53 hubertf Exp $   */
 
 /*
  * Copyright (c) 1983, 1993
@@ -43,7 +43,7 @@
 #if 0
 static char sccsid[] = "@(#)battlestar.c       8.2 (Berkeley) 4/28/95";
 #else
-__RCSID("$NetBSD: battlestar.c,v 1.6 1997/10/11 02:06:55 lukem Exp $");
+__RCSID("$NetBSD: battlestar.c,v 1.7 1999/07/21 03:56:53 hubertf Exp $");
 #endif
 #endif                         /* not lint */
 
@@ -66,6 +66,9 @@
        char    mainbuf[LINELENGTH];
        char   *next;
 
+       /* Open the score file then revoke setgid privileges */
+       open_score_file();
+       setregid(getgid(), getgid());
        initialize(argc < 2 || strcmp(argv[1], "-r"));
 start:
        news();
diff -r 1201ef8ae802 -r 9137f0793ac5 games/battlestar/com6.c
--- a/games/battlestar/com6.c   Wed Jul 21 03:32:53 1999 +0000
+++ b/games/battlestar/com6.c   Wed Jul 21 03:56:53 1999 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: com6.c,v 1.10 1999/02/10 01:36:50 hubertf Exp $        */
+/*     $NetBSD: com6.c,v 1.11 1999/07/21 03:56:53 hubertf Exp $        */
 
 /*
  * Copyright (c) 1983, 1993
@@ -38,7 +38,7 @@
 #if 0
 static char sccsid[] = "@(#)com6.c     8.2 (Berkeley) 4/28/95";
 #else
-__RCSID("$NetBSD: com6.c,v 1.10 1999/02/10 01:36:50 hubertf Exp $");
+__RCSID("$NetBSD: com6.c,v 1.11 1999/07/21 03:56:53 hubertf Exp $");
 #endif
 #endif                         /* not lint */
 
@@ -105,11 +105,20 @@
        exit(0);
 }
 
+static FILE *score_fp;
+
+void
+open_score_file()
+{
+       score_fp = fopen(_PATH_SCORE, "a");
+       if (score_fp == NULL)
+               warn("open %s for append", _PATH_SCORE);
+}
+
 void
 post(ch)
        char    ch;
 {
-       FILE   *fp;
        struct timeval tv;
        time_t tvsec;
        char   *date;
@@ -122,17 +131,16 @@
        tvsec = (time_t) tv.tv_sec;
        date = ctime(&tvsec);
        date[24] = '\0';
-       if ((fp = fopen(_PATH_SCORE, "a")) != NULL) {
-               fprintf(fp, "%s  %8s  %c%20s", date, uname, ch, rate());
+       if (score_fp != NULL) {
+               fprintf(score_fp, "%s  %8s  %c%20s", date, uname, ch, rate());
                if (wiz)
-                       fprintf(fp, "   wizard\n");
+                       fprintf(score_fp, "   wizard\n");
                else
                        if (tempwiz)
-                               fprintf(fp, "   WIZARD!\n");
+                               fprintf(score_fp, "   WIZARD!\n");
                        else
-                               fprintf(fp, "\n");
-       } else
-               warn("fopen %s", _PATH_SCORE);
+                               fprintf(score_fp, "\n");
+       }
        sigprocmask(SIG_SETMASK, &osigset, (sigset_t *) 0);
 }
 
diff -r 1201ef8ae802 -r 9137f0793ac5 games/battlestar/extern.h
--- a/games/battlestar/extern.h Wed Jul 21 03:32:53 1999 +0000
+++ b/games/battlestar/extern.h Wed Jul 21 03:56:53 1999 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: extern.h,v 1.10 1999/02/10 01:36:50 hubertf Exp $ */
+/*     $NetBSD: extern.h,v 1.11 1999/07/21 03:56:53 hubertf Exp $ */
 
 /*
  * Copyright (c) 1983, 1993
@@ -340,6 +340,7 @@
 void news __P((void));
 void newway __P((int));
 void notarget __P((void));
+void open_score_file __P((void));
 void parse __P((void));
 void post __P((char));
 void printobjs __P((void));