if initscr() fails, exit with a message rather than crash in the

[bsdgames-darwin.git] / atc / main.c

diff --git a/atc/main.c b/atc/main.c
index c69064b6e57d35b72caeb92343cd4bd3dc2a02e9..e47388a53c1dcd4fc1a45bb373474096998a5302 100644 (file)
--- a/atc/main.c
+++ b/atc/main.c
@@ -1,4 +1,4 @@
-/*     $NetBSD: main.c,v 1.14 2005/07/01 00:48:34 jmc Exp $    */
+/*     $NetBSD: main.c,v 1.19 2008/07/20 01:03:20 lukem Exp $  */
 
 /*-
  * Copyright (c) 1990, 1993
@@ -43,15 +43,15 @@
 
 #include <sys/cdefs.h>
 #ifndef lint
-__COPYRIGHT("@(#) Copyright (c) 1990, 1993\n\
-       The Regents of the University of California.  All rights reserved.\n");
+__COPYRIGHT("@(#) Copyright (c) 1990, 1993\
+ The Regents of the University of California.  All rights reserved.");
 #endif /* not lint */
 
 #ifndef lint
 #if 0
 static char sccsid[] = "@(#)main.c     8.1 (Berkeley) 5/31/93";
 #else
-__RCSID("$NetBSD: main.c,v 1.14 2005/07/01 00:48:34 jmc Exp $");
+__RCSID("$NetBSD: main.c,v 1.19 2008/07/20 01:03:20 lukem Exp $");
 #endif
 #endif /* not lint */
 
@@ -63,7 +63,7 @@ extern FILE   *yyin;
 int
 main(int argc, char *argv[])
 {
-       int                     seed;
+       unsigned long           seed;
        int                     f_usage = 0, f_list = 0, f_showscore = 0;
        int                     f_printpath = 0;
        const char              *file = NULL;
@@ -75,11 +75,12 @@ main(int argc, char *argv[])
 
        /* Open the score file then revoke setgid privileges */
        open_score_file();
-       setgid(getgid());
+       (void)setgid(getgid());
 
-       start_time = seed = time(NULL);
+       start_time = time(NULL);
+       seed = start_time;
 
-       while ((ch = getopt(argc, argv, "ulstpg:f:r:")) != -1) {
+       while ((ch = getopt(argc, argv, ":u?lstpg:f:r:")) != -1) {
                switch (ch) {
                case '?':
                case 'u':
@@ -110,19 +111,18 @@ main(int argc, char *argv[])
        srandom(seed);
 
        if (f_usage)
-               fprintf(stderr, 
+               (void)fprintf(stderr, 
                    "Usage: %s -[u?lstp] [-[gf] game_name] [-r random seed]\n",
-                       argv[0]);
+                   argv[0]);
        if (f_showscore)
-               log_score(1);
+               (void)log_score(1);
        if (f_list)
-               list_games();
+               (void)list_games();
        if (f_printpath) {
                char    buf[100];
 
-               strcpy(buf, _PATH_GAMES);
-               buf[strlen(buf) - 1] = '\0';
-               puts(buf);
+               (void)strlcpy(buf, _PATH_GAMES, 100);
+               (void)puts(buf);
        }
                
        if (f_usage || f_showscore || f_list || f_printpath)
@@ -139,38 +139,37 @@ main(int argc, char *argv[])
        init_gr();
        setup_screen(sp);
 
-       addplane();
+       (void)addplane();
 
-       signal(SIGINT, quit);
-       signal(SIGQUIT, quit);
+       (void)signal(SIGINT, quit);
+       (void)signal(SIGQUIT, quit);
 #ifdef BSD
-       signal(SIGTSTP, SIG_IGN);
-       signal(SIGSTOP, SIG_IGN);
+       (void)signal(SIGTSTP, SIG_IGN);
 #endif
-       signal(SIGHUP, log_score_quit);
-       signal(SIGTERM, log_score_quit);
+       (void)signal(SIGHUP, log_score_quit);
+       (void)signal(SIGTERM, log_score_quit);
 
-       tcgetattr(fileno(stdin), &tty_start);
+       (void)tcgetattr(fileno(stdin), &tty_start);
        tty_new = tty_start;
        tty_new.c_lflag &= ~(ICANON|ECHO);
        tty_new.c_iflag |= ICRNL;
        tty_new.c_cc[VMIN] = 1;
        tty_new.c_cc[VTIME] = 0;
-       tcsetattr(fileno(stdin), TCSADRAIN, &tty_new);
+       (void)tcsetattr(fileno(stdin), TCSADRAIN, &tty_new);
 
        sa.sa_handler = update;
-       sigemptyset(&sa.sa_mask);
-       sigaddset(&sa.sa_mask, SIGALRM);
-       sigaddset(&sa.sa_mask, SIGINT);
+       (void)sigemptyset(&sa.sa_mask);
+       (void)sigaddset(&sa.sa_mask, SIGALRM);
+       (void)sigaddset(&sa.sa_mask, SIGINT);
        sa.sa_flags = 0;
-       sigaction(SIGALRM, &sa, (struct sigaction *)0);
+       (void)sigaction(SIGALRM, &sa, (struct sigaction *)0);
 
 #ifdef BSD
        itv.it_value.tv_sec = 0;
        itv.it_value.tv_usec = 1;
        itv.it_interval.tv_sec = sp->update_secs;
        itv.it_interval.tv_usec = 0;
-       setitimer(ITIMER_REAL, &itv, NULL);
+       (void)setitimer(ITIMER_REAL, &itv, NULL);
 #endif
 #ifdef SYSV
        alarm(sp->update_secs);
@@ -183,7 +182,7 @@ main(int argc, char *argv[])
 #ifdef BSD
                        itv.it_value.tv_sec = 0;
                        itv.it_value.tv_usec = 0;
-                       setitimer(ITIMER_REAL, &itv, NULL);
+                       (void)setitimer(ITIMER_REAL, &itv, NULL);
 #endif
 #ifdef SYSV
                        alarm(0);
@@ -196,7 +195,7 @@ main(int argc, char *argv[])
                        itv.it_value.tv_usec = 0;
                        itv.it_interval.tv_sec = sp->update_secs;
                        itv.it_interval.tv_usec = 0;
-                       setitimer(ITIMER_REAL, &itv, NULL);
+                       (void)setitimer(ITIMER_REAL, &itv, NULL);
 #endif
 #ifdef SYSV
                        alarm(sp->update_secs);
@@ -217,7 +216,7 @@ read_file(const char *s)
                return (-1);
        }
        retval = yyparse();
-       fclose(yyin);
+       (void)fclose(yyin);
 
        if (retval != 0)
                return (-1);
@@ -232,21 +231,22 @@ default_game(void)
        static char     file[256];
        char            line[256], games[256];
 
-       strcpy(games, _PATH_GAMES);
-       strcat(games, GAMES);
+       (void)strlcpy(games, _PATH_GAMES, 256);
+       (void)strlcat(games, GAMES, 256);
 
        if ((fp = fopen(games, "r")) == NULL) {
                warn("fopen %s", games);
                return (NULL);
        }
        if (fgets(line, sizeof(line), fp) == NULL) {
-               fprintf(stderr, "%s: no default game available\n", games);
+               (void)fprintf(stderr, "%s: no default game available\n", games);
+               fclose(fp);
                return (NULL);
        }
-       fclose(fp);
+       (void)fclose(fp);
        line[strlen(line) - 1] = '\0';
-       strcpy(file, _PATH_GAMES);
-       strcat(file, line);
+       (void)strlcpy(file, _PATH_GAMES, 256);
+       (void)strlcat(file, line, 256);
        return (file);
 }
 
@@ -258,8 +258,8 @@ okay_game(const char *s)
        const char      *ret = NULL;
        char            line[256], games[256];
 
-       strcpy(games, _PATH_GAMES);
-       strcat(games, GAMES);
+       (void)strlcpy(games, _PATH_GAMES, 256);
+       (void)strlcat(games, GAMES, 256);
 
        if ((fp = fopen(games, "r")) == NULL) {
                warn("fopen %s", games);
@@ -268,19 +268,19 @@ okay_game(const char *s)
        while (fgets(line, sizeof(line), fp) != NULL) {
                line[strlen(line) - 1] = '\0';
                if (strcmp(s, line) == 0) {
-                       strcpy(file, _PATH_GAMES);
-                       strcat(file, line);
+                       (void)strlcpy(file, _PATH_GAMES, 256);
+                       (void)strlcat(file, line, 256);
                        ret = file;
                        break;
                }
        }
-       fclose(fp);
+       (void)fclose(fp);
        if (ret == NULL) {
                test_mode = 1;
                ret = s;
-               fprintf(stderr, "%s: %s: game not found\n", games, s);
-               fprintf(stderr, "Your score will not be logged.\n");
-               sleep(2);       /* give the guy time to read it */
+               (void)fprintf(stderr, "%s: %s: game not found\n", games, s);
+               (void)fprintf(stderr, "Your score will not be logged.\n");
+               (void)sleep(2); /* give the guy time to read it */
        }
        return (ret);
 }
@@ -292,21 +292,21 @@ list_games(void)
        char            line[256], games[256];
        int             num_games = 0;
 
-       strcpy(games, _PATH_GAMES);
-       strcat(games, GAMES);
+       (void)strlcpy(games, _PATH_GAMES, 256);
+       (void)strlcat(games, GAMES, 256);
 
        if ((fp = fopen(games, "r")) == NULL) {
                warn("fopen %s", games);
                return (-1);
        }
-       puts("available games:");
+       (void)puts("available games:");
        while (fgets(line, sizeof(line), fp) != NULL) {
-               printf("        %s", line);
+               (void)printf("  %s", line);
                num_games++;
        }
-       fclose(fp);
+       (void)fclose(fp);
        if (num_games == 0) {
-               fprintf(stderr, "%s: no games available\n", games);
+               (void)fprintf(stderr, "%s: no games available\n", games);
                return (-1);
        }
        return (0);