--- /dev/null
+/* SCCS Id: @(#)vmsmain.c 3.3 2001/07/27 */
+/* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
+/* NetHack may be freely redistributed. See license for details. */
+/* main.c - VMS NetHack */
+
+#include "hack.h"
+#include "dlb.h"
+
+#include <signal.h>
+
+static void NDECL(whoami);
+static void FDECL(process_options, (int, char **));
+static void NDECL(byebye);
+#ifndef SAVE_ON_FATAL_ERROR
+# ifndef __DECC
+# define vms_handler_type int
+# else
+# define vms_handler_type unsigned int
+# endif
+extern void FDECL(VAXC$ESTABLISH, (vms_handler_type (*)(genericptr_t,genericptr_t)));
+static vms_handler_type FDECL(vms_handler, (genericptr_t,genericptr_t));
+#include <ssdef.h> /* system service status codes */
+#endif
+
+static void NDECL(wd_message);
+#ifdef WIZARD
+static boolean wiz_error_flag = FALSE;
+#endif
+
+int
+main(argc,argv)
+int argc;
+char *argv[];
+{
+ register int fd;
+#ifdef CHDIR
+ register char *dir;
+#endif
+
+#ifdef SECURE /* this should be the very first code executed */
+ privoff();
+ fflush((FILE *)0); /* force stdio to init itself */
+ privon();
+#endif
+
+ atexit(byebye);
+ hname = argv[0];
+ hname = vms_basename(hname); /* name used in 'usage' type messages */
+ hackpid = getpid();
+ (void) umask(0);
+
+ choose_windows(DEFAULT_WINDOW_SYS);
+
+#ifdef CHDIR /* otherwise no chdir() */
+ /*
+ * See if we must change directory to the playground.
+ * (Perhaps hack is installed with privs and playground is
+ * inaccessible for the player.)
+ * The logical name HACKDIR is overridden by a
+ * -d command line option (must be the first option given)
+ */
+ dir = nh_getenv("NETHACKDIR");
+ if (!dir) dir = nh_getenv("HACKDIR");
+#endif
+ if(argc > 1) {
+#ifdef CHDIR
+ if (!strncmp(argv[1], "-d", 2) && argv[1][2] != 'e') {
+ /* avoid matching "-dec" for DECgraphics; since the man page
+ * says -d directory, hope nobody's using -desomething_else
+ */
+ argc--;
+ argv++;
+ dir = argv[0]+2;
+ if(*dir == '=' || *dir == ':') dir++;
+ if(!*dir && argc > 1) {
+ argc--;
+ argv++;
+ dir = argv[0];
+ }
+ if(!*dir)
+ error("Flag -d must be followed by a directory name.");
+ }
+ if (argc > 1)
+#endif /* CHDIR */
+
+ /*
+ * Now we know the directory containing 'record' and
+ * may do a prscore().
+ */
+ if (!strncmp(argv[1], "-s", 2)) {
+#ifdef CHDIR
+ chdirx(dir, FALSE);
+#endif
+ prscore(argc, argv);
+ exit(EXIT_SUCCESS);
+ }
+ }
+
+#ifdef CHDIR
+ /* move to the playground directory; 'termcap' might be found there */
+ chdirx(dir, TRUE);
+#endif
+
+#ifdef SECURE
+ /* disable installed privs while loading nethack.cnf and termcap,
+ and also while initializing terminal [$assign("TT:")]. */
+ privoff();
+#endif
+ initoptions();
+ init_nhwindows(&argc, argv);
+ whoami();
+#ifdef SECURE
+ privon();
+#endif
+
+ /*
+ * It seems you really want to play.
+ */
+ u.uhp = 1; /* prevent RIP on early quits */
+#ifndef SAVE_ON_FATAL_ERROR
+ /* used to clear hangup stuff while still giving standard traceback */
+ VAXC$ESTABLISH(vms_handler);
+#endif
+ (void) signal(SIGHUP, (SIG_RET_TYPE) hangup);
+
+ process_options(argc, argv); /* command line options */
+
+#ifdef WIZARD
+ if (wizard)
+ Strcpy(plname, "wizard");
+ else
+#endif
+ if (!*plname || !strncmpi(plname, "games", 4) ||
+ !strcmpi(plname, "nethack"))
+ askname();
+ plnamesuffix(); /* strip suffix from name; calls askname() */
+ /* again if suffix was whole name */
+ /* accepts any suffix */
+#ifdef WIZARD
+ if(!wizard) {
+#endif
+ /*
+ * check for multiple games under the same name
+ * (if !locknum) or check max nr of players (otherwise)
+ */
+ (void) signal(SIGQUIT,SIG_IGN);
+ (void) signal(SIGINT,SIG_IGN);
+ if(!locknum)
+ Sprintf(lock, "_%u%s", (unsigned)getuid(), plname);
+ getlock();
+#ifdef WIZARD
+ } else {
+ Sprintf(lock, "_%u%s", (unsigned)getuid(), plname);
+ getlock();
+ }
+#endif /* WIZARD */
+
+ dlb_init(); /* must be before newgame() */
+
+ /*
+ * Initialization of the boundaries of the mazes
+ * Both boundaries have to be even.
+ */
+ x_maze_max = COLNO-1;
+ if (x_maze_max % 2)
+ x_maze_max--;
+ y_maze_max = ROWNO-1;
+ if (y_maze_max % 2)
+ y_maze_max--;
+
+ /*
+ * Initialize the vision system. This must be before mklev() on a
+ * new game or before a level restore on a saved game.
+ */
+ vision_init();
+
+ display_gamewindows();
+
+ if ((fd = restore_saved_game()) >= 0) {
+#ifdef WIZARD
+ /* Since wizard is actually flags.debug, restoring might
+ * overwrite it.
+ */
+ boolean remember_wiz_mode = wizard;
+#endif
+ const char *fq_save = fqname(SAVEF, SAVEPREFIX, 0);
+
+ (void) chmod(fq_save,0); /* disallow parallel restores */
+ (void) signal(SIGINT, (SIG_RET_TYPE) done1);
+#ifdef NEWS
+ if(iflags.news) {
+ display_file(NEWS, FALSE);
+ iflags.news = FALSE; /* in case dorecover() fails */
+ }
+#endif
+ pline("Restoring save file...");
+ mark_synch(); /* flush output */
+ if(!dorecover(fd))
+ goto not_recovered;
+#ifdef WIZARD
+ if(!wizard && remember_wiz_mode) wizard = TRUE;
+#endif
+ check_special_room(FALSE);
+ wd_message();
+
+ if (discover || wizard) {
+ if (yn("Do you want to keep the save file?") == 'n')
+ (void) delete_savefile();
+ else
+ (void) chmod(fq_save,FCMASK); /* back to readable */
+ }
+
+ flags.move = 0;
+ } else {
+not_recovered:
+ player_selection();
+ newgame();
+ wd_message();
+
+ flags.move = 0;
+ set_wear();
+ (void) pickup(1);
+ }
+
+ moveloop();
+ exit(EXIT_SUCCESS);
+ /*NOTREACHED*/
+ return(0);
+}
+
+static void
+process_options(argc, argv)
+int argc;
+char *argv[];
+{
+ int i;
+
+
+ /*
+ * Process options.
+ */
+ while(argc > 1 && argv[1][0] == '-'){
+ argv++;
+ argc--;
+ switch(argv[0][1]){
+ case 'D':
+#ifdef WIZARD
+ if(!strcmpi(nh_getenv("USER"), WIZARD_NAME)) {
+ wizard = TRUE;
+ break;
+ }
+ /* otherwise fall thru to discover */
+ wiz_error_flag = TRUE;
+#endif /* WIZARD */
+ case 'X':
+ case 'x':
+ discover = TRUE;
+ break;
+#ifdef NEWS
+ case 'n':
+ iflags.news = FALSE;
+ break;
+#endif
+ case 'u':
+ if(argv[0][2])
+ (void) strncpy(plname, argv[0]+2, sizeof(plname)-1);
+ else if(argc > 1) {
+ argc--;
+ argv++;
+ (void) strncpy(plname, argv[0], sizeof(plname)-1);
+ } else
+ raw_print("Player name expected after -u");
+ break;
+ case 'I':
+ case 'i':
+ if (!strncmpi(argv[0]+1, "IBM", 3))
+ switch_graphics(IBM_GRAPHICS);
+ break;
+ /* case 'D': */
+ case 'd':
+ if (!strncmpi(argv[0]+1, "DEC", 3))
+ switch_graphics(DEC_GRAPHICS);
+ break;
+ case 'p': /* profession (role) */
+ if (argv[0][2]) {
+ if ((i = str2role(&argv[0][2])) >= 0)
+ flags.initrole = i;
+ } else if (argc > 1) {
+ argc--;
+ argv++;
+ if ((i = str2role(argv[0])) >= 0)
+ flags.initrole = i;
+ }
+ break;
+ case 'r': /* race */
+ if (argv[0][2]) {
+ if ((i = str2race(&argv[0][2])) >= 0)
+ flags.initrace = i;
+ } else if (argc > 1) {
+ argc--;
+ argv++;
+ if ((i = str2race(argv[0])) >= 0)
+ flags.initrace = i;
+ }
+ break;
+ case '@':
+ flags.randomall = 1;
+ break;
+ default:
+ if ((i = str2role(&argv[0][1])) >= 0) {
+ flags.initrole = i;
+ break;
+ }
+ /* else raw_printf("Unknown option: %s", *argv); */
+ }
+ }
+
+ if(argc > 1)
+ locknum = atoi(argv[1]);
+#ifdef MAX_NR_OF_PLAYERS
+ if(!locknum || locknum > MAX_NR_OF_PLAYERS)
+ locknum = MAX_NR_OF_PLAYERS;
+#endif
+}
+
+#ifdef CHDIR
+void
+chdirx(dir, wr)
+const char *dir;
+boolean wr;
+{
+# ifndef HACKDIR
+ static const char *defdir = ".";
+# else
+ static const char *defdir = HACKDIR;
+
+ if(dir == (const char *)0)
+ dir = defdir;
+ else if (wr && !same_dir(HACKDIR, dir))
+ /* If we're playing anywhere other than HACKDIR, turn off any
+ privs we may have been installed with. */
+ privoff();
+# endif
+
+ if(dir && chdir(dir) < 0) {
+ perror(dir);
+ error("Cannot chdir to %s.", dir);
+ }
+
+ /* warn the player if we can't write the record file */
+ if (wr) check_recordfile(dir);
+
+ defdir = dir;
+}
+#endif /* CHDIR */
+
+static void
+whoami()
+{
+ /*
+ * Who am i? Algorithm: 1. Use name as specified in NETHACKOPTIONS
+ * 2. Use lowercase of $USER (if 1. fails)
+ * The resulting name is overridden by command line options.
+ * If everything fails, or if the resulting name is some generic
+ * account like "games" then eventually we'll ask him.
+ * Note that we trust the user here; it is possible to play under
+ * somebody else's name.
+ */
+ register char *s;
+
+ if (!*plname && (s = nh_getenv("USER")))
+ (void) lcase(strncpy(plname, s, sizeof(plname)-1));
+}
+
+static void
+byebye()
+{
+ /* Different versions of both VAX C and GNU C use different return types
+ for signal functions. Return type 'int' along with the explicit casts
+ below satisfy the most combinations of compiler vs <signal.h>.
+ */
+ int (*hup)();
+#ifdef SHELL
+ extern unsigned long dosh_pid, mail_pid;
+ extern unsigned long FDECL(sys$delprc,(unsigned long *,const genericptr_t));
+
+ /* clean up any subprocess we've spawned that may still be hanging around */
+ if (dosh_pid) (void) sys$delprc(&dosh_pid, 0), dosh_pid = 0;
+ if (mail_pid) (void) sys$delprc(&mail_pid, 0), mail_pid = 0;
+#endif
+
+ /* SIGHUP doesn't seem to do anything on VMS, so we fudge it here... */
+ hup = (int(*)()) signal(SIGHUP, SIG_IGN);
+ if (!program_state.exiting++ &&
+ hup != (int(*)()) SIG_DFL && hup != (int(*)()) SIG_IGN)
+ (void) (*hup)();
+
+#ifdef CHDIR
+ (void) chdir(getenv("PATH"));
+#endif
+}
+
+#ifndef SAVE_ON_FATAL_ERROR
+/* Condition handler to prevent byebye's hangup simulation
+ from saving the game after a fatal error has occurred. */
+/*ARGSUSED*/
+static vms_handler_type /* should be `unsigned long', but the -*/
+vms_handler(sigargs, mechargs) /*+ prototype in <signal.h> is screwed */
+genericptr_t sigargs, mechargs; /* [0] is argc, [1..argc] are the real args */
+{
+ unsigned long condition = ((unsigned long *)sigargs)[1];
+
+ if (condition == SS$_ACCVIO /* access violation */
+ || (condition >= SS$_ASTFLT && condition <= SS$_TBIT)
+ || (condition >= SS$_ARTRES && condition <= SS$_INHCHME)) {
+ program_state.done_hup = TRUE; /* pretend hangup has been attempted */
+# if defined(WIZARD) && !defined(BETA)
+ if (wizard)
+# endif /*WIZARD && !BETA*/
+# if defined(WIZARD) || defined(BETA)
+ abort(); /* enter the debugger */
+# endif /*WIZARD || BETA*/
+ }
+ return SS$_RESIGNAL;
+}
+#endif
+
+#ifdef PORT_HELP
+void
+port_help()
+{
+ /*
+ * Display VMS-specific help. Just show contents of the helpfile
+ * named by PORT_HELP.
+ */
+ display_file(PORT_HELP, TRUE);
+}
+#endif /* PORT_HELP */
+
+static void
+wd_message()
+{
+#ifdef WIZARD
+ if (wiz_error_flag) {
+ pline("Only user \"%s\" may access debug (wizard) mode.",
+ WIZARD_NAME);
+ pline("Entering discovery mode instead.");
+ } else
+#endif
+ if (discover)
+ You("are in non-scoring discovery mode.");
+}
+
+/*vmsmain.c*/
projects / nethack / commitdiff