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- Subject: v18i117: Table-driven ctime/time/localtime/date package, Part07/07
- Newsgroups: comp.sources.unix
- Sender: sources
- Approved: rsalz@uunet.UU.NET
-
- Submitted-by: ado@ncifcrf.gov
- Posting-number: Volume 18, Issue 117
- Archive-name: localtime3/part07
-
- : To unbundle, sh this file
- echo file 'date.c' >&2
- cat >'date.c' <<'End of date.c'
- #ifndef lint
- #ifndef NOID
- static char elsieid[] = "@(#)date.c 7.1";
- /*
- ** Modified from the UCB version whose SCCS ID appears below.
- */
- #endif /* !defined NOID */
- #endif /* !defined lint */
-
- /*
- * Copyright (c) 1985, 1987, 1988 The Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms are permitted
- * provided that the above copyright notice and this paragraph are
- * duplicated in all such forms and that any documentation,
- * advertising materials, and other materials related to such
- * distribution and use acknowledge that the software was developed
- * by the University of California, Berkeley. The name of the
- * University may not be used to endorse or promote products derived
- * from this software without specific prior written permission.
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
- * WARRANTIES OF MERCHANT[A]BILITY AND FITNESS FOR A PARTICULAR PURPOSE.
- */
-
- #ifndef lint
- char copyright[] =
- "@(#) Copyright (c) 1985, 1987, 1988 The Regents of the University of California.\n\
- All rights reserved.\n";
- #endif /* not lint */
-
- #ifndef lint
- static char sccsid[] = "@(#)date.c 4.23 (Berkeley) 9/20/88";
- #endif /* not lint */
-
- #ifndef USG
- #include "sys/time.h" /* for DST_NONE */
- #endif /* !defined USG */
- #include "private.h"
- #include "utmp.h" /* for OLD_TIME (or its absence) */
-
- /*
- ** The two things date knows about time are. . .
- */
-
- #ifndef TM_YEAR_BASE
- #define TM_YEAR_BASE 1900
- #endif /* !defined TM_YEAR_BASE */
-
- #ifndef SECSPERMIN
- #define SECSPERMIN 60
- #endif /* !defined SECSPERMIN */
-
- extern double atof();
- extern char ** environ;
- extern char * getlogin();
- extern int logwtmp();
- extern time_t mktime();
- extern char * optarg;
- extern int optind;
- extern char * strchr();
- extern time_t time();
- extern char * tzname[2];
-
- static int retval = EXIT_SUCCESS;
-
- static void checkfinal();
- static int comptm();
- static time_t convert();
- static void display();
- static void dogmt();
- static void errensure();
- static void iffy();
- static char * nondigit();
- static void oops();
- static void reset();
- static void timeout();
- static void usage();
- static void wildinput();
-
- int
- main(argc, argv)
- int argc;
- char * argv[];
- {
- register char * format;
- register char * value;
- register char * cp;
- register int ch;
- register int dousg;
- register int aflag = 0;
- register int dflag = 0;
- register int nflag = 0;
- register int tflag = 0;
- register int minuteswest;
- register int dsttime;
- register float adjust;
- time_t now;
- time_t t;
-
- (void) time(&now);
- format = value = NULL;
- while ((ch = getopt(argc, argv, "und:t:a:")) != EOF) {
- switch (ch) {
- default:
- usage();
- case 'u': /* do it in GMT */
- case 'c':
- dogmt();
- break;
- case 'n': /* don't set network */
- nflag = 1;
- break;
- case 'd': /* daylight savings time */
- if (dflag) {
- (void) fprintf(stderr,
- "date: error: multiple -d's used");
- usage();
- }
- dflag = 1;
- cp = optarg;
- dsttime = atoi(cp);
- if (*cp == '\0' || *nondigit(cp) != '\0')
- wildinput("-t value", optarg,
- "must be a non-negative number");
- break;
- case 't': /* minutes west of GMT */
- if (tflag) {
- (void) fprintf(stderr,
- "date: error: multiple -t's used");
- usage();
- }
- tflag = 1;
- cp = optarg;
- minuteswest = atoi(cp);
- if (*cp == '+' || *cp == '-')
- ++cp;
- if (*cp == '\0' || *nondigit(cp) != '\0')
- wildinput("-d value", optarg,
- "must be a number");
- break;
- case 'a': /* adjustment */
- if (aflag) {
- (void) fprintf(stderr,
- "date: error: multiple -a's used");
- usage();
- }
- aflag = 1;
- cp = optarg;
- adjust = atof(cp);
- if (*cp == '+' || *cp == '-')
- ++cp;
- if (*cp == '\0' || strcmp(cp, ".") == 0)
- wildinput("-a value", optarg,
- "must be a number");
- cp = nondigit(cp);
- if (*cp == '.')
- ++cp;
- if (*nondigit(cp) != '\0')
- wildinput("-a value", optarg,
- "must be a number");
- break;
- }
- }
- while (optind < argc) {
- cp = argv[optind++];
- if (*cp == '+')
- if (format == NULL)
- format = cp + 1;
- else {
- (void) fprintf(stderr,
- "date: error: multiple formats in command line\n");
- usage();
- }
- else if (value == NULL)
- value = cp;
- else {
- (void) fprintf(stderr,
- "date: error: multiple values in command line\n");
- usage();
- }
- }
- if (value != NULL) {
- /*
- ** This order ensures that "reasonable" twelve-digit inputs
- ** (such as 120203042006) won't be misinterpreted
- ** even if time_t's range all the way back to the thirteenth
- ** century. Do not change the order.
- */
- t = convert(value, (dousg = TRUE), now);
- if (t == -1)
- t = convert(value, (dousg = FALSE), now);
- if (t == -1) {
- /*
- ** Out of range values,
- ** or time that falls in a DST transition hole?
- */
- if ((cp = strchr(value, '.')) != NULL) {
- /*
- ** Ensure that the failure of
- ** TZ=US/Eastern date 8712312359.60
- ** doesn't get misdiagnosed. (It was
- ** TZ=US/Eastern date 8712311859.60
- ** when the leap second was inserted.)
- ** The normal check won't work since
- ** the given time is valid in GMT.
- */
- if (atoi(cp + 1) >= SECSPERMIN)
- wildinput("time", value,
- "out of range seconds given");
- }
- dogmt();
- t = convert(value, FALSE, now);
- if (t == -1)
- t = convert(value, TRUE, now);
- wildinput("time", value,
- (t == -1) ?
- "out of range value given" :
- "time skipped when clock springs forward");
- }
- }
- /*
- ** Entire command line has now been checked.
- */
- if (aflag) {
- #ifdef DST_NONE
- struct timeval tv;
-
- tv.tv_sec = (int) adjust;
- tv.tv_usec = (int) ((adjust - tv.tv_sec) * 1000000);
- if (adjtime(&tv, (struct timeval *) NULL) != 0)
- oops("date: error: adjtime");
- #else /* !defined DST_NONE */
- reset((time_t) (now + adjust), nflag);
- #endif /* !defined DST_NONE */
- /*
- ** Sun silently ignores everything else; we follow suit.
- */
- (void) exit(retval);
- }
- if (dflag || tflag) {
- #ifdef DST_NONE
- struct timezone tz;
-
- if (!dflag || !tflag)
- if (gettimeofday((struct timeval *) NULL, &tz) != 0)
- oops("date: error: gettimeofday");
- if (dflag)
- tz.tz_dsttime = dsttime;
- if (tflag)
- tz.tz_minuteswest = minuteswest;
- if (settimeofday((struct timeval *) NULL, &tz) != 0)
- oops("date: error: settimeofday");
- #else /* !defined DST_NONE */
- (void) fprintf(stderr,
- "date: warning: kernel doesn't keep -d/-t information, option ignored\n");
- #endif /* !defined DST_NONE */
- }
-
- if (value == NULL)
- display(format);
-
- reset(t, nflag);
-
- checkfinal(value, dousg, t, now);
-
- #ifdef EBUG
- {
- struct tm tm;
-
- tm = *localtime(&t);
- timeout(stdout, "%c\n", &tm);
- (void) exit(retval);
- }
- #endif /* defined EBUG */
-
- display(format);
-
- /* gcc -Wall pacifier */
- for ( ; ; )
- ;
- }
-
- static void
- dogmt()
- {
- register char ** saveenv;
- static char * fakeenv[] = { "TZ=GMT0", NULL };
-
- saveenv = environ;
- environ = fakeenv;
- tzset();
- environ = saveenv;
- }
-
- #ifdef OLD_TIME
-
- /*
- ** We assume we're on a System-V-based system,
- ** should use stime,
- ** should write System-V-format utmp entries,
- ** and don't have network notification to worry about.
- */
-
- #include "fcntl.h" /* for O_WRONLY, O_APPEND */
-
- /*ARGSUSED*/
- static void
- reset(newt, nflag)
- time_t newt;
- int nflag;
- {
- register int fid;
- time_t oldt;
- static struct {
- struct utmp before;
- struct utmp after;
- } s;
-
- /*
- ** Wouldn't it be great if stime returned the old time?
- */
- (void) time(&oldt);
- if (stime(&newt) != 0)
- oops("date: error: stime");
- s.before.ut_type = OLD_TIME;
- s.before.ut_time = oldt;
- (void) strcpy(s.before.ut_line, OTIME_MSG);
- s.after.ut_type = NEW_TIME;
- s.after.ut_time = newt;
- (void) strcpy(s.after.ut_line, NTIME_MSG);
- fid = open(WTMP_FILE, O_WRONLY | O_APPEND);
- if (fid < 0)
- oops("date: error: log file open");
- if (write(fid, (char *) &s, sizeof s) != sizeof s)
- oops("date: error: log file write");
- if (close(fid) != 0)
- oops("date: error: log file close");
- pututline(&s.before);
- pututline(&s.after);
- }
-
- #else /* !defined OLD_TIME */
-
- /*
- ** We assume we're on a BSD-based system,
- ** should use settimeofday,
- ** should write BSD-format utmp entries (using logwtmp),
- ** and may get to worry about network notification.
- ** The "time name" changes between 4.3-tahoe and 4.4;
- ** we include sys/param.h to determine which we should use.
- */
-
- #ifndef TIME_NAME
- #include "sys/param.h"
- #ifdef BSD4_4
- #define TIME_NAME "date"
- #else /* !defined BSD4_4 */
- #define TIME_NAME ""
- #endif /* !defined BSD4_4 */
- #endif /* !defined TIME_NAME */
-
- #include "syslog.h"
- #include "sys/socket.h"
- #include "netinet/in.h"
- #include "netdb.h"
- #define TSPTYPES
- #include "protocols/timed.h"
-
- #ifndef TSP_SETDATE
- /*ARGSUSED*/
- #endif /* !defined TSP_SETDATE */
- static void
- reset(newt, nflag)
- time_t newt;
- int nflag;
- {
- register char * username;
- static struct timeval tv; /* static so tv_usec is 0 */
-
- #ifdef EBUG
- return;
- #endif /* defined EBUG */
- username = getlogin();
- if (username == NULL || *username == '\0') /* single-user or no tty */
- username = "root";
- tv.tv_sec = newt;
- #ifdef TSP_SETDATE
- if (nflag || !netsettime(tv))
- #endif /* defined TSP_SETDATE */
- {
- /*
- ** "old" entry is always written, for compatibility.
- */
- logwtmp("|", TIME_NAME, "");
- if (settimeofday(&tv, (struct timezone *) NULL) == 0) {
- logwtmp("{", TIME_NAME, ""); /* } */
- syslog(LOG_AUTH | LOG_NOTICE, "date set by %s",
- username);
- } else oops("date: error: settimeofday");
- }
- }
-
- #endif /* !defined OLD_TIME */
-
- static void
- wildinput(item, value, reason)
- char * item;
- char * value;
- char * reason;
- {
- (void) fprintf(stderr, "date: error: bad command line %s \"%s\", %s\n",
- item, value, reason);
- usage();
- }
-
- static void
- errensure()
- {
- if (retval == EXIT_SUCCESS)
- retval = EXIT_FAILURE;
- }
-
- static char *
- nondigit(cp)
- register char * cp;
- {
- while (isdigit(*cp))
- ++cp;
- return cp;
- }
-
- static void
- usage()
- {
- (void) fprintf(stderr, "date: usage is date ");
- (void) fprintf(stderr, "[-u] ");
- (void) fprintf(stderr, "[-c] ");
- (void) fprintf(stderr, "[-n] ");
- (void) fprintf(stderr, "[-d dst] ");
- (void) fprintf(stderr, "[-t min-west] ");
- (void) fprintf(stderr, "[-a sss.fff] ");
- (void) fprintf(stderr, "[[yyyy]mmddhhmm[yyyy][.ss]] ");
- (void) fprintf(stderr, "[+format]\n");
- errensure();
- (void) exit(retval);
- }
-
- static void
- oops(string)
- char * string;
- {
- (void) perror(string);
- errensure();
- display((char *) NULL);
- }
-
- static void
- display(format)
- char * format;
- {
- struct tm tm;
- time_t now;
-
- (void) time(&now);
- tm = *localtime(&now);
- if (format == NULL) {
- timeout(stdout, "%a %b ", &tm);
- (void) printf("%2d ", tm.tm_mday);
- timeout(stdout, "%X %Z %Y", &tm);
- } else timeout(stdout, format, &tm);
- (void) putchar('\n');
- (void) fflush(stdout);
- (void) fflush(stderr);
- if (ferror(stdout) || ferror(stderr)) {
- (void) fprintf(stderr, "date: error: couldn't write results\n");
- errensure();
- }
- (void) exit(retval);
- }
-
- extern size_t strftime();
-
- #define INCR 1024
-
- static void
- timeout(fp, format, tmp)
- FILE * fp;
- char * format;
- struct tm * tmp;
- {
- char * cp;
- size_t result, size;
-
- if (*format == '\0')
- return;
- size = INCR;
- cp = malloc((alloc_size_t) size);
- for ( ; ; ) {
- if (cp == NULL) {
- (void) fprintf(stderr,
- "date: error: can't get memory\n");
- errensure();
- (void) exit(retval);
- }
- result = strftime(cp, size, format, tmp);
- if (result != 0)
- break;
- size += INCR;
- cp = realloc(cp, (alloc_size_t) size);
- }
- (void) fwrite(cp, 1, result, fp);
- free(cp);
- }
-
- static int
- comptm(atmp, btmp)
- register struct tm * atmp;
- register struct tm * btmp;
- {
- register int result;
-
- if ((result = (atmp->tm_year - btmp->tm_year)) == 0 &&
- (result = (atmp->tm_mon - btmp->tm_mon)) == 0 &&
- (result = (atmp->tm_mday - btmp->tm_mday)) == 0 &&
- (result = (atmp->tm_hour - btmp->tm_hour)) == 0 &&
- (result = (atmp->tm_min - btmp->tm_min)) == 0)
- result = atmp->tm_sec - btmp->tm_sec;
- return result;
- }
-
- /*
- ** convert --
- ** convert user's input into a time_t.
- */
-
- #define ATOI2(ar) (ar[0] - '0') * 10 + (ar[1] - '0'); ar += 2;
-
- static time_t
- convert(value, dousg, t)
- register char * value;
- int dousg;
- time_t t;
- {
- register char * cp;
- register char * dotp;
- register int cent, year_in_cent, month, hour, day, mins, secs;
- struct tm tm, outtm;
- time_t outt;
-
- tm = *localtime(&t);
- cent = (tm.tm_year + TM_YEAR_BASE) / 100;
- year_in_cent = (tm.tm_year + TM_YEAR_BASE) - cent * 100;
- month = tm.tm_mon + 1;
- day = tm.tm_mday;
- hour = tm.tm_hour;
- mins = tm.tm_min;
- secs = 0;
-
- dotp = strchr(value, '.');
- for (cp = value; *cp != '\0'; ++cp)
- if (!isdigit(*cp) && cp != dotp)
- wildinput("time", value, "contains a nondigit");
-
- if (dotp == NULL)
- dotp = strchr(value, '\0');
- else {
- cp = dotp + 1;
- if (strlen(cp) != 2)
- wildinput("time", value,
- "seconds part is not two digits");
- secs = ATOI2(cp);
- }
-
- cp = value;
- switch (dotp - cp) {
- default:
- wildinput("time", value, "main part is wrong length");
- case 12:
- if (!dousg) {
- cent = ATOI2(cp);
- year_in_cent = ATOI2(cp);
- }
- month = ATOI2(cp);
- day = ATOI2(cp);
- hour = ATOI2(cp);
- mins = ATOI2(cp);
- if (dousg) {
- cent = ATOI2(cp);
- year_in_cent = ATOI2(cp);
- }
- break;
- case 8: /* mmddhhmm */
- month = ATOI2(cp);
- /* fall through to. . . */
- case 6: /* ddhhmm */
- day = ATOI2(cp);
- /* fall through to. . . */
- case 4: /* hhmm */
- hour = ATOI2(cp);
- mins = ATOI2(cp);
- break;
- case 10:
- if (!dousg) {
- year_in_cent = ATOI2(cp);
- }
- month = ATOI2(cp);
- day = ATOI2(cp);
- hour = ATOI2(cp);
- mins = ATOI2(cp);
- if (dousg) {
- year_in_cent = ATOI2(cp);
- }
- break;
- }
-
- tm.tm_year = cent * 100 + year_in_cent - TM_YEAR_BASE;
- tm.tm_mon = month - 1;
- tm.tm_mday = day;
- tm.tm_hour = hour;
- tm.tm_min = mins;
- tm.tm_sec = secs;
- tm.tm_isdst = -1;
- outtm = tm;
- outt = mktime(&outtm);
- return (comptm(&tm, &outtm) == 0) ? outt : -1;
- }
-
- /*
- ** Code from here on out is either as provided by UCB
- ** or is only called just before the program exits.
- */
-
- /*
- ** Check for iffy input.
- */
-
- static void
- checkfinal(value, didusg, t, oldnow)
- char * value;
- int didusg;
- time_t t;
- time_t oldnow;
- {
- time_t othert;
- struct tm tm;
- struct tm othertm;
- register int pass;
- register long offset;
-
- /*
- ** See if there's both a USG and a BSD interpretation.
- */
- othert = convert(value, !didusg, oldnow);
- if (othert != -1 && othert != t)
- iffy(t, othert, value, "year could be at start or end");
- /*
- ** See if there's both a DST and a STD version.
- */
- tm = *localtime(&t);
- othertm = tm;
- othertm.tm_isdst = !tm.tm_isdst;
- othert = mktime(&othertm);
- if (othert != -1 && othertm.tm_isdst != tm.tm_isdst &&
- comptm(&tm, &othertm) == 0)
- iffy(t, othert, value,
- "both standard and summer time versions exist");
- /*
- ** Final check.
- **
- ** If a jurisdiction shifts time *without* shifting whether time is
- ** summer or standard (as Hawaii, the United Kingdom, and Saudi Arabia
- ** have done), routine checks for iffy times may not work.
- ** So we perform this final check, deferring it until after the time has
- ** been set--it may take a while, and we don't want to introduce an unnecessary
- ** lag between the time the user enters their command and the time that
- ** stime/settimeofday is called.
- **
- ** We just check nearby times to see if any of them have the same representation
- ** as the time that convert returned. We work our way out from the center
- ** for quick response in solar time situations. We only handle common cases--
- ** offsets of at most a minute, and offsets of exact numbers of minutes
- ** and at most an hour.
- */
- for (offset = 1; offset <= 60; ++offset)
- for (pass = 1; pass <= 4; ++pass) {
- if (pass == 1)
- othert = t + offset;
- else if (pass == 2)
- othert = t - offset;
- else if (pass == 3)
- othert = t + 60 * offset;
- else othert = t - 60 * offset;
- othertm = *localtime(&othert);
- if (comptm(&tm, &othertm) == 0)
- iffy(t, othert, value,
- "multiple matching times exist");
- }
- }
-
- static void
- iffy(thist, thatt, value, reason)
- time_t thist;
- time_t thatt;
- char * value;
- char * reason;
- {
- struct tm tm;
-
- (void) fprintf(stderr, "date: warning: ambiguous time \"%s\", %s.\n",
- value, reason);
- tm = *gmtime(&thist);
- (void) fprintf(stderr, "Time was set as if you used\n");
- /*
- ** Avoid running afoul of SCCS!
- */
- timeout(stderr, "\tdate -u ", &tm);
- timeout(stderr, "%m%d%H", &tm);
- timeout(stderr, "%M", &tm);
- timeout(stderr, "%Y.%S\n", &tm);
- tm = *localtime(&thist);
- timeout(stderr, "to get %c", &tm);
- (void) fprintf(stderr, " (%s time)",
- tm.tm_isdst ? "summer" : "standard");
- (void) fprintf(stderr, ". Use\n");
- tm = *gmtime(&thatt);
- timeout(stderr, "\tdate -u ", &tm);
- timeout(stderr, "%m%d%H", &tm);
- timeout(stderr, "%M", &tm);
- timeout(stderr, "%Y.%S\n", &tm);
- tm = *localtime(&thatt);
- timeout(stderr, "to get %c", &tm);
- (void) fprintf(stderr, " (%s time)",
- tm.tm_isdst ? "summer" : "standard");
- (void) fprintf(stderr, ".\n");
- errensure();
- (void) exit(retval);
- }
-
- #ifdef TSP_SETDATE
- #define WAITACK 2 /* seconds */
- #define WAITDATEACK 5 /* seconds */
-
- extern int errno;
- /*
- * Set the date in the machines controlled by timedaemons
- * by communicating the new date to the local timedaemon.
- * If the timedaemon is in the master state, it performs the
- * correction on all slaves. If it is in the slave state, it
- * notifies the master that a correction is needed.
- * Returns 1 on success, 0 on failure.
- */
- netsettime(ntv)
- struct timeval ntv;
- {
- int s, length, port, timed_ack, found, err;
- long waittime;
- fd_set ready;
- char hostname[MAXHOSTNAMELEN];
- struct timeval tout;
- struct servent *sp;
- struct tsp msg;
- struct sockaddr_in sin, dest, from;
-
- sp = getservbyname("timed", "udp");
- if (sp == 0) {
- fputs("udp/timed: unknown service\n", stderr);
- retval = 2;
- return (0);
- }
- dest.sin_port = sp->s_port;
- dest.sin_family = AF_INET;
- dest.sin_addr.s_addr = htonl((u_long)INADDR_ANY);
- s = socket(AF_INET, SOCK_DGRAM, 0);
- if (s < 0) {
- if (errno != EPROTONOSUPPORT)
- perror("date: socket");
- goto bad;
- }
- bzero((char *)&sin, sizeof (sin));
- sin.sin_family = AF_INET;
- for (port = IPPORT_RESERVED - 1; port > IPPORT_RESERVED / 2; port--) {
- sin.sin_port = htons((u_short)port);
- if (bind(s, (struct sockaddr *)&sin, sizeof (sin)) >= 0)
- break;
- if (errno != EADDRINUSE) {
- if (errno != EADDRNOTAVAIL)
- perror("date: bind");
- goto bad;
- }
- }
- if (port == IPPORT_RESERVED / 2) {
- fputs("date: All ports in use\n", stderr);
- goto bad;
- }
- msg.tsp_type = TSP_SETDATE;
- msg.tsp_vers = TSPVERSION;
- if (gethostname(hostname, sizeof (hostname))) {
- perror("gethostname");
- goto bad;
- }
- (void) strncpy(msg.tsp_name, hostname, sizeof (hostname));
- msg.tsp_seq = htons((u_short)0);
- msg.tsp_time.tv_sec = htonl((u_long)ntv.tv_sec);
- msg.tsp_time.tv_usec = htonl((u_long)ntv.tv_usec);
- length = sizeof (struct sockaddr_in);
- if (connect(s, &dest, length) < 0) {
- perror("date: connect");
- goto bad;
- }
- if (send(s, (char *)&msg, sizeof (struct tsp), 0) < 0) {
- if (errno != ECONNREFUSED)
- perror("date: send");
- goto bad;
- }
- timed_ack = -1;
- waittime = WAITACK;
- loop:
- tout.tv_sec = waittime;
- tout.tv_usec = 0;
- FD_ZERO(&ready);
- FD_SET(s, &ready);
- found = select(FD_SETSIZE, &ready, (fd_set *)0, (fd_set *)0, &tout);
- length = sizeof(err);
- if (getsockopt(s, SOL_SOCKET, SO_ERROR, (char *)&err, &length) == 0
- && err) {
- errno = err;
- if (errno != ECONNREFUSED)
- perror("date: send (delayed error)");
- goto bad;
- }
- if (found > 0 && FD_ISSET(s, &ready)) {
- length = sizeof (struct sockaddr_in);
- if (recvfrom(s, (char *)&msg, sizeof (struct tsp), 0, &from,
- &length) < 0) {
- if (errno != ECONNREFUSED)
- perror("date: recvfrom");
- goto bad;
- }
- msg.tsp_seq = ntohs(msg.tsp_seq);
- msg.tsp_time.tv_sec = ntohl(msg.tsp_time.tv_sec);
- msg.tsp_time.tv_usec = ntohl(msg.tsp_time.tv_usec);
- switch (msg.tsp_type) {
-
- case TSP_ACK:
- timed_ack = TSP_ACK;
- waittime = WAITDATEACK;
- goto loop;
-
- case TSP_DATEACK:
- (void)close(s);
- return (1);
-
- default:
- fprintf(stderr,
- "date: Wrong ack received from timed: %s\n",
- tsptype[msg.tsp_type]);
- timed_ack = -1;
- break;
- }
- }
- if (timed_ack == -1)
- fputs("date: Can't reach time daemon, time set locally.\n",
- stderr);
- bad:
- (void)close(s);
- retval = 2;
- return (0);
- }
- #endif /* defined TSP_SETDATE */
- End of date.c
- echo file 'logwtmp.c' >&2
- cat >'logwtmp.c' <<'End of logwtmp.c'
- #ifndef lint
- #ifndef NOID
- static char elsieid[] = "@(#)logwtmp.c 7.1";
- /* As received from UCB, with include file reordering and OLD_TIME condition. */
- #endif /* !defined NOID */
- #endif /* !defined lint */
-
- /*
- * Copyright (c) 1988 The Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms are permitted
- * provided that the above copyright notice and this paragraph are
- * duplicated in all such forms and that any documentation,
- * advertising materials, and other materials related to such
- * distribution and use acknowledge that the software was developed
- * by the University of California, Berkeley. The name of the
- * University may not be used to endorse or promote products derived
- * from this software without specific prior written permission.
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
- * WARRANTIES OF MERCHANT[A]BILITY AND FITNESS FOR A PARTICULAR PURPOSE.
- */
-
- #ifndef lint
- #ifdef LIBC_SCCS
- static char sccsid[] = "@(#)logwtmp.c 5.2 (Berkeley) 9/20/88";
- #endif /* defined LIBC_SCCS */
- #endif /* !defined lint */
-
- #include <sys/types.h>
- #include <utmp.h>
-
- #ifndef OLD_TIME
-
- #include <sys/file.h>
- #include <sys/time.h>
- #include <sys/stat.h>
-
- #define WTMPFILE "/usr/adm/wtmp"
-
- logwtmp(line, name, host)
- char *line, *name, *host;
- {
- struct utmp ut;
- struct stat buf;
- int fd;
- time_t time();
- char *strncpy();
-
- if ((fd = open(WTMPFILE, O_WRONLY|O_APPEND, 0)) < 0)
- return;
- if (!fstat(fd, &buf)) {
- (void)strncpy(ut.ut_line, line, sizeof(ut.ut_line));
- (void)strncpy(ut.ut_name, name, sizeof(ut.ut_name));
- (void)strncpy(ut.ut_host, host, sizeof(ut.ut_host));
- (void)time(&ut.ut_time);
- if (write(fd, (char *)&ut, sizeof(struct utmp)) !=
- sizeof(struct utmp))
- (void)ftruncate(fd, buf.st_size);
- }
- (void)close(fd);
- }
-
- #endif /* !defined OLD_TIME */
- End of logwtmp.c
- echo file 'strftime.c' >&2
- cat >'strftime.c' <<'End of strftime.c'
- #ifndef lint
- #ifndef NOID
- static char elsieid[] = "@(#)strftime.c 7.1";
- /*
- ** Based on the UCB version whose ID appears below.
- ** This is ANSIish only when time is treated identically in all locales and
- ** when "multibyte character == plain character".
- */
- #endif /* !defined NOID */
- #endif /* !defined lint */
- /*
- * Copyright (c) 1989 The Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms are permitted
- * provided that the above copyright notice and this paragraph are
- * duplicated in all such forms and that any documentation,
- * advertising materials, and other materials related to such
- * distribution and use acknowledge that the software was developed
- * by the University of California, Berkeley. The name of the
- * University may not be used to endorse or promote products derived
- * from this software without specific prior written permission.
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
- * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
- */
-
- #if defined(LIBC_SCCS) && !defined(lint)
- static char sccsid[] = "@(#)strftime.c 5.4 (Berkeley) 3/14/89";
- #endif /* LIBC_SCCS and not lint */
-
- #include "sys/types.h"
- #include "time.h"
- #include "tzfile.h"
-
- static char *afmt[] = {
- "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat",
- };
- static char *Afmt[] = {
- "Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday",
- "Saturday",
- };
- static char *bfmt[] = {
- "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep",
- "Oct", "Nov", "Dec",
- };
- static char *Bfmt[] = {
- "January", "February", "March", "April", "May", "June", "July",
- "August", "September", "October", "November", "December",
- };
-
- static size_t gsize;
- static char *pt;
-
- static void _add();
- static void _conv();
- static void _fmt();
-
- size_t
- strftime(s, maxsize, format, t)
- char *s;
- char *format;
- size_t maxsize;
- struct tm *t;
- {
- pt = s;
- gsize = maxsize;
- _fmt(format, t);
- if (gsize <= 0)
- return(0);
- *pt = '\0';
- return(maxsize - gsize);
- }
-
- static void
- _fmt(format, t)
- register char *format;
- struct tm *t;
- {
- for (; *format; ++format) {
- if (*format == '%')
- switch(*++format) {
- case '\0':
- --format;
- break;
- case 'A':
- if (t->tm_wday < 0 || t->tm_wday > 6)
- _add("?");
- else _add(Afmt[t->tm_wday]);
- continue;
- case 'a':
- if (t->tm_wday < 0 || t->tm_wday > 6)
- _add("?");
- else _add(afmt[t->tm_wday]);
- continue;
- case 'B':
- if (t->tm_mon < 0 || t->tm_mon > 11)
- _add("?");
- else _add(Bfmt[t->tm_mon]);
- continue;
- case 'b':
- case 'h':
- if (t->tm_mon < 0 || t->tm_mon > 11)
- _add("?");
- else _add(bfmt[t->tm_mon]);
- continue;
- case 'c':
- _fmt("%D %X", t);
- continue;
- case 'C':
- _fmt("%a %b %e %X %Y", t);
- continue;
- case 'D':
- case 'x':
- _fmt("%m/%d/%y", t);
- continue;
- case 'd':
- _conv(t->tm_mday, 2, '0');
- continue;
- case 'e':
- _conv(t->tm_mday, 2, ' ');
- continue;
- case 'H':
- _conv(t->tm_hour, 2, '0');
- continue;
- case 'I':
- _conv(t->tm_hour % 12 ?
- t->tm_hour % 12 : 12, 2, '0');
- continue;
- case 'j':
- _conv(t->tm_yday + 1, 3, '0');
- continue;
- case 'k':
- _conv(t->tm_hour % 12 ?
- t->tm_hour % 12 : 12, 2, ' ');
- continue;
- #ifdef KITCHEN_SINK
- case 'K':
- _add("kitchen sink");
- continue;
- #endif /* defined KITCHEN_SINK */
- case 'l':
- _conv(t->tm_hour, 2, ' ');
- continue;
- case 'M':
- _conv(t->tm_min, 2, '0');
- continue;
- case 'm':
- _conv(t->tm_mon + 1, 2, '0');
- continue;
- case 'n':
- _add("\n");
- continue;
- case 'p':
- _add(t->tm_hour >= 12 ? "PM" : "AM");
- continue;
- case 'R':
- _fmt("%H:%M", t);
- continue;
- case 'r':
- _fmt("%I:%M:%S %p", t);
- continue;
- case 'S':
- _conv(t->tm_sec, 2, '0');
- continue;
- case 'T':
- case 'X':
- _fmt("%H:%M:%S", t);
- continue;
- case 't':
- _add("\t");
- continue;
- case 'U':
- _conv((t->tm_yday + 7 - t->tm_wday) / 7,
- 2, '0');
- continue;
- case 'W':
- _conv((t->tm_yday + 7 -
- (t->tm_wday ? (t->tm_wday - 1) : 6))
- / 7, 2, '0');
- continue;
- case 'w':
- _conv(t->tm_wday, 1, '0');
- continue;
- case 'y':
- _conv((t->tm_year + TM_YEAR_BASE) % 100,
- 2, '0');
- continue;
- case 'Y':
- _conv(t->tm_year + TM_YEAR_BASE, 4, '0');
- continue;
- case 'Z':
- #ifdef TM_ZONE
- if (t->TM_ZONE)
- _add(t->TM_ZONE);
- else
- #endif /* defined TM_ZONE */
- if (t->tm_isdst == 0 || t->tm_isdst == 1) {
- extern char * tzname[2];
-
- _add(tzname[t->tm_isdst]);
- } else _add("?");
- continue;
- case '%':
- /*
- * X311J/88-090 (4.12.3.5): if conversion char is
- * undefined, behavior is undefined. Print out the
- * character itself as printf(3) also does.
- */
- default:
- break;
- }
- if (gsize <= 0)
- return;
- *pt++ = *format;
- --gsize;
- }
- }
-
- static void
- _conv(n, digits, fill)
- int n, digits, fill;
- {
- static char buf[10];
- register char *p;
-
- for (p = buf + sizeof(buf) - 2; n > 0 && p > buf; n /= 10, --digits)
- *p-- = n % 10 + '0';
- while (p > buf && digits-- > 0)
- *p-- = fill;
- _add(++p);
- }
-
- static void
- _add(str)
- register char *str;
- {
- for (;; ++pt, --gsize) {
- if (gsize <= 0)
- return;
- if (!(*pt = *str++))
- return;
- }
- }
- End of strftime.c
- exit
-