home *** CD-ROM | disk | FTP | other *** search
- /* SCCS Id: @(#)unixmain.c 3.1 92/12/04 */
- /* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
- /* NetHack may be freely redistributed. See license for details. */
-
- /* main.c - Unix NetHack */
-
- #include "hack.h"
-
- #include <signal.h>
- #include <pwd.h>
- #ifndef O_RDONLY
- #include <fcntl.h>
- #endif
-
- #if !defined(_BULL_SOURCE) && !defined(sgi)
- # if defined(POSIX_TYPES) || defined(SVR4)
- extern struct passwd *FDECL(getpwuid,(uid_t));
- # else
- extern struct passwd *FDECL(getpwuid,(int));
- # endif
- #endif
- extern struct passwd *FDECL(getpwnam,(const char *));
- #ifdef CHDIR
- static void chdirx();
- #endif /* CHDIR */
- static boolean whoami();
- static void FDECL(process_options, (int, char **));
-
- int
- main(argc,argv)
- int argc;
- char *argv[];
- {
- register int fd;
- #ifdef CHDIR
- register char *dir;
- #endif
- boolean exact_username;
-
- hname = argv[0];
- 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 runs suid and playground is inaccessible
- * for the player.)
- * The environment variable HACKDIR is overridden by a
- * -d command line option (must be the first option given)
- */
- dir = getenv("NETHACKDIR");
- if (!dir) dir = 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.");
- } else
- #endif /* CHDIR /**/
-
- /*
- * Now we know the directory containing 'record' and
- * may do a prscore().
- */
- if (!strncmp(argv[1], "-s", 2)) {
- #ifdef CHDIR
- chdirx(dir,0);
- #endif
- prscore(argc, argv);
- exit(0);
- }
- }
-
- initoptions();
- init_nhwindows();
- exact_username = whoami();
-
- /*
- * It seems you really want to play.
- */
- setrandom();
- u.uhp = 1; /* prevent RIP on early quits */
- (void) signal(SIGHUP, (SIG_RET_TYPE) hangup);
- #ifdef SIGXCPU
- (void) signal(SIGXCPU, (SIG_RET_TYPE) hangup);
- #endif
-
- /*
- * Find the creation date of this game,
- * so as to avoid restoring outdated savefiles.
- */
- gethdate(hname);
-
- /*
- * We cannot do chdir earlier, otherwise gethdate will fail.
- */
- #ifdef CHDIR
- chdirx(dir,1);
- #endif
-
- process_options(argc, argv); /* command line options */
-
- #ifdef DEF_PAGER
- if(!(catmore = getenv("HACKPAGER")) && !(catmore = getenv("PAGER")))
- catmore = DEF_PAGER;
- #endif
- #ifdef MAIL
- getmailstatus();
- #endif
- #ifdef WIZARD
- if (wizard)
- Strcpy(plname, "wizard");
- else
- #endif
- if(!*plname || !strncmp(plname, "player", 4)
- || !strncmp(plname, "games", 4)) {
- exact_username = FALSE;
- askname();
- }
- if (!exact_username) /* what if their LOGNAME looks suffixed-like? */
- 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, "%d%s", (int)getuid(), plname);
- getlock();
- #ifdef WIZARD
- } else {
- Sprintf(lock, "%d%s", (int)getuid(), plname);
- getlock();
- }
- #endif /* WIZARD /**/
-
- /*
- * Initialisation 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();
-
- set_savefile_name();
- uncompress(SAVEF);
-
- if((fd = open_savefile()) >= 0 &&
- /* if not up-to-date, quietly delete file via false condition */
- (uptodate(fd) || delete_savefile())) {
- #ifdef WIZARD
- /* Since wizard is actually flags.debug, restoring might
- * overwrite it.
- */
- boolean remember_wiz_mode = wizard;
- #endif
- (void) chmod(SAVEF,0); /* disallow parallel restores */
- (void) signal(SIGINT, (SIG_RET_TYPE) done1);
- #ifdef NEWS
- if(flags.news) display_file(NEWS, FALSE);
- #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
- pline("Hello %s, welcome back to NetHack!", plname);
- check_special_room(FALSE);
- #ifdef EXPLORE_MODE
- if (discover)
- You("are in non-scoring discovery mode.");
- #endif
- #if defined(EXPLORE_MODE) || defined(WIZARD)
- if (discover || wizard) {
- if(yn("Do you want to keep the save file?") == 'n')
- (void) delete_savefile();
- else {
- (void) chmod(SAVEF,FCMASK); /* back to readable */
- compress(SAVEF);
- }
- }
- #endif
- flags.move = 0;
- } else {
- not_recovered:
- player_selection();
- newgame();
- /* give welcome message before pickup messages */
- pline("Hello %s, welcome to NetHack!", plname);
- #ifdef EXPLORE_MODE
- if (discover)
- You("are in non-scoring discovery mode.");
- #endif
- flags.move = 0;
- set_wear();
- pickup(1);
- }
-
- flags.moonphase = phase_of_the_moon();
- if(flags.moonphase == FULL_MOON) {
- You("are lucky! Full moon tonight.");
- change_luck(1);
- } else if(flags.moonphase == NEW_MOON) {
- pline("Be careful! New moon tonight.");
- }
- if(flags.friday13 = friday_13th()) {
- pline("Watch out! Bad things can happen on Friday the 13th.");
- change_luck(-1);
- }
-
- initrack();
-
- moveloop();
- return(0);
- }
-
- static void
- process_options(argc, argv)
- int argc;
- char *argv[];
- {
- /*
- * Process options.
- */
- while(argc > 1 && argv[1][0] == '-'){
- argv++;
- argc--;
- switch(argv[0][1]){
- #if defined(WIZARD) || defined(EXPLORE_MODE)
- # ifndef EXPLORE_MODE
- case 'X':
- # endif
- case 'D':
- # ifdef WIZARD
- {
- char *user;
- int uid;
- struct passwd *pw = (struct passwd *)0;
-
- uid = getuid();
- user = getlogin();
- if (user) {
- pw = getpwnam(user);
- if (pw && (pw->pw_uid != uid)) pw = 0;
- }
- if (pw == 0) {
- user = getenv("USER");
- if (user) {
- pw = getpwnam(user);
- if (pw && (pw->pw_uid != uid)) pw = 0;
- }
- if (pw == 0) {
- pw = getpwuid(uid);
- }
- }
- if (pw && !strcmp(pw->pw_name,WIZARD)) {
- wizard = TRUE;
- break;
- }
- }
- /* otherwise fall thru to discover */
- # endif
- # ifdef EXPLORE_MODE
- case 'X':
- discover = TRUE;
- # endif
- break;
- #endif
- #ifdef NEWS
- case 'n':
- flags.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");
- plnamesuffix();
- 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;
- default:
- /* allow -T for Tourist, etc. */
- (void) strncpy(pl_character, argv[0]+1,
- sizeof(pl_character)-1);
-
- /* 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
- static void
- chdirx(dir, wr)
- const char *dir;
- boolean wr;
- {
-
- # ifdef SECURE
- if(dir /* User specified directory? */
- # ifdef HACKDIR
- && strcmp(dir, HACKDIR) /* and not the default? */
- # endif
- ) {
- (void) setgid(getgid());
- (void) setuid(getuid()); /* Ron Wessels */
- }
- # endif
-
- # ifdef HACKDIR
- if(dir == NULL)
- dir = HACKDIR;
- # 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 */
- /* perhaps we should also test whether . is writable */
- /* unfortunately the access system-call is worthless */
- if (wr) check_recordfile(dir);
- }
- #endif /* CHDIR /**/
-
- static boolean
- whoami() {
- /*
- * Who am i? Algorithm: 1. Use name as specified in NETHACKOPTIONS
- * 2. Use $USER or $LOGNAME (if 1. fails)
- * 3. Use getlogin() (if 2. fails)
- * The resulting name is overridden by command line options.
- * If everything fails, or if the resulting name is some generic
- * account like "games", "play", "player", "hack" 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) return FALSE;
- if(/* !*plname && */ (s = getenv("USER")))
- (void) strncpy(plname, s, sizeof(plname)-1);
- if(!*plname && (s = getenv("LOGNAME")))
- (void) strncpy(plname, s, sizeof(plname)-1);
- if(!*plname && (s = getlogin()))
- (void) strncpy(plname, s, sizeof(plname)-1);
- return TRUE;
- }
-
- #ifdef PORT_HELP
- void
- port_help()
- {
- /*
- * Display unix-specific help. Just show contents of the helpfile
- * named by PORT_HELP.
- */
- display_file(PORT_HELP, TRUE);
- }
- #endif
-
- /*unixmain.c*/
-