srogue: add support for SAVEDIR

srogue/global.c

@@ -86,6 +86,7 @@ bool waswizard = FALSE;		/* Was a wizard sometime */
 bool amulet = FALSE;		/* He found the amulet */
 bool in_shell = FALSE;		/* True if executing a shell */
 bool nochange = FALSE;		/* true if last stat same as now */
+bool use_savedir = FALSE;	/* true if using system savefiles */
 
 bool s_know[MAXSCROLLS];		/* Does he know about a scroll */
 bool p_know[MAXPOTIONS];		/* Does he know about a potion */

srogue/main.c

@@ -37,6 +37,9 @@
 
 #include "rogue.ext"
 
+#define SCOREFILE "/usr/local/games/roguelike/srogue.scr"
+#define SAVEDIR "/usr/local/games/roguelike/sroguesave/"
+
 struct termios terminal;
 
 main(argc, argv, envp)
@@ -71,12 +74,17 @@ char **envp;
 	playgid = getgid();
 
 	/* check for print-score option */
+#ifdef SCOREFILE
+	strncpy(scorefile, SCOREFILE, LINLEN);
+	scorefile[LINLEN - 1] = '\0';
+#else
 
 	strcpy(scorefile, homedir);
 
 	if (*scorefile)
 		strcat(scorefile,"/");
 	strcat(scorefile, "srogue.scr");
+#endif
 
 	if(argc >= 2 && strcmp(argv[1], "-s") == 0)
 	{
@@ -105,6 +113,20 @@ char **envp;
 	time(&now);
 	lowtime = (int) now;
 
+#ifdef SAVEDIR
+	if (argc >= 3 && !strcmp(argv[1], "-n")) {
+		strncpy(whoami, argv[2], LINLEN);
+		whoami[LINLEN - 1] = '\0';
+		use_savedir = TRUE;
+		if (snprintf(file_name, LINLEN, "%s%d-%.10s.srsav", SAVEDIR, 
+			playuid, whoami) >= LINLEN) {
+			/* Just in case it doesn't fit */
+			strcpy(file_name, "srogue.save");
+			use_savedir = FALSE;
+		}
+	}
+#endif
+
 	/* get home and options from environment */
 
 	if ((env = getenv("HOME")) != NULL)
@@ -120,13 +142,15 @@ char **envp;
         if ((strlen(home) > 0) && (home[strlen(home)-1] != '/'))
 		strcat(home, "/");
 
+	if (!use_savedir) {
 		strcpy(file_name, home);
 		strcat(file_name, "srogue.sav");
+        }
 
 	if ((env = getenv("ROGUEOPTS")) != NULL)
 		parse_opts(env);
 
-	if (env == NULL || whoami[0] == '\0')
+	if (!use_savedir && (env == NULL || whoami[0] == '\0'))
 	{
 		if((pw = getpwuid(playuid)) == NULL)
 		{
@@ -140,10 +164,20 @@ char **envp;
 	if (env == NULL || fruit[0] == '\0')
 		strcpy(fruit, "juicy-fruit");
 
-	if (argc == 2)
+	if (use_savedir)
+	{
+		/* restore() won't return if the restore succeeded.  If
+		 * file_name doesn't exist, it will return TRUE. In that 
+		 * case, start a new game. */
+		if (!restore(file_name, envp))
+			exit(1);
+	}
+	else if (argc == 2)
 		if(!restore(argv[1], envp)) /* NOTE: NEVER RETURNS */
 			exit(1);
 
+	/* START NEW GAME */
+
 	dnum = (wizard && getenv("SEED") != NULL ?
 		atoi(getenv("SEED")) : lowtime + getpid());
 

srogue/options.c

@@ -185,6 +185,9 @@ char *str;
 			continue;
 		len = sp - str;
 		for (op = optlist; op < &optlist[NUM_OPTS]; op++) {
+			/* For security, some options can't be changed. */
+			if (!allowchange(op))
+				continue;
 			if (EQSTR(str, op->o_name, len)) {
 				reg char *start;
 	
@@ -228,3 +231,14 @@ int len;
 	}
 	*s1 = '\0';
 }
+
+int allowchange(OPTION *opt)
+{
+	if (!use_savedir)
+		return 1;
+	if (!strcmp(opt->o_name, "name"))
+		return 0;
+	if (!strcmp(opt->o_name, "file"))
+		return 0;
+	return 1;
+}

srogue/rogue.ext

@@ -20,7 +20,7 @@ extern void quit(), auto_save(), endit(), byebye(), game_err();
 EXTINT prntfile(), unconfuse(), sapem();
 EXTINT noteth(), notregen(), notinvinc(), unsee(), nohaste(), npch();
 EXTBOOL running, nochange, after, inwhgt, isfight, firstmove, nlmove;
-EXTBOOL wizard, waswizard, in_shell, amulet, door_stop, playing;
+EXTBOOL wizard, waswizard, in_shell, amulet, door_stop, playing, use_savedir;
 EXTBOOL notify, ws_know[], p_know[], s_know[], r_know[], inpool;
 EXTCHAR home[], file_name[], whoami[], fruit[], curpurch[], scorefile[];
 EXTCHAR *r_stones[], *p_colors[], *s_names[], *ws_type[], *ws_made[];

srogue/save.c

@@ -136,8 +136,11 @@ dosave()
 	FILE *savef;
 
 	ignore();
+	if (!use_savedir)
+	{
 		setuid(playuid);
 		setgid(playgid);
+	}
 	umask(022);
 
 	if (file_name[0] != '\0') {
@@ -209,9 +212,13 @@ char *file, **envp;
 	int slines, scols;
 
 	if ((inf = open(file, O_RDONLY)) < 0) {
+		if (use_savedir && errno == ENOENT)
+			return TRUE;
+		else {
 			printf("Cannot read save game %s\n",file);
 			return FALSE;
 		}
+	}
 
 	encread(buf, strlen(version) + 1, inf);
 
@@ -297,6 +304,8 @@ char *file, **envp;
 	{
 #ifndef __DJGPP__
 			endwin();
+			if (!use_savedir)
+			{
 				while((pid = fork()) < 0)
 					sleep(1);
 
@@ -319,6 +328,17 @@ char *file, **envp;
 						return FALSE;
 					}
 				}
+			}
+			else
+			{
+				/* Don't drop privileges, they're needed
+				 * for the unlink. */
+				if (unlink(file) < 0)
+				{
+					printf("Cannot unlink file\n");
+					return FALSE;
+				}
+			}
 #else
 		if (unlink(file) < 0)
 		{