Import macOS userland

adv_cmds-176
basic_cmds-55
bootstrap_cmds-116.100.1
developer_cmds-66
diskdev_cmds-667.40.1
doc_cmds-53.60.1
file_cmds-321.40.3
mail_cmds-35
misc_cmds-34
network_cmds-606.40.1
patch_cmds-17
remote_cmds-63
shell_cmds-216.60.1
system_cmds-880.60.2
text_cmds-106

1 files changed, 736 insertions, 0 deletions

diff --git a/system_cmds/at.tproj/parsetime.c b/system_cmds/at.tproj/parsetime.c
new file mode 100644
index 0000000..3aeea6c
--- /dev/null
+++ b/system_cmds/at.tproj/parsetime.c
@@ -0,0 +1,736 @@
+/*
+ *  parsetime.c - parse time for at(1)
+ *  Copyright (C) 1993, 1994  Thomas Koenig
+ *
+ *  modifications for English-language times
+ *  Copyright (C) 1993  David Parsons
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. The name of the author(s) may not be used to endorse or promote
+ *    products derived from this software without specific prior written
+ *    permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *  at [NOW] PLUS NUMBER MINUTES|HOURS|DAYS|WEEKS
+ * DOT ::= ':'|'.'
+ *     /NUMBER [DOT NUMBER] [AM|PM]\ /[MONTH NUMBER [NUMBER]]             \
+ *     |NOON                       | |[TOMORROW]                          |
+ *     |MIDNIGHT                   | |[DAY OF WEEK]                       |
+ *     \TEATIME                    / |NUMBER [SLASH NUMBER [SLASH NUMBER]]|
+ *                                   \PLUS NUMBER MINUTES|HOURS|DAYS|WEEKS/
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD: /usr/local/www/cvsroot/FreeBSD/src/usr.bin/at/parsetime.c,v 1.28 2011/11/06 17:32:29 ed Exp $");
+
+/* System Headers */
+
+#include <sys/types.h>
+#include <ctype.h>
+#include <err.h>
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <tzfile.h>
+#include <unistd.h>
+#ifndef __FreeBSD__
+#include <getopt.h>
+#endif
+
+/* Local headers */
+
+#include "at.h"
+#include "panic.h"
+#include "parsetime.h"
+
+
+/* Structures and unions */
+
+enum {	/* symbols */
+    MIDNIGHT, NOON, TEATIME,
+    PM, AM, TOMORROW, TODAY, NOW,
+    MINUTES, HOURS, DAYS, WEEKS, MONTHS, YEARS,
+    NUMBER, PLUS, DOT, COMMA, SLASH, ID, JUNK,
+    JAN, FEB, MAR, APR, MAY, JUN,
+    JUL, AUG, SEP, OCT, NOV, DEC,
+    SUN, MON, TUE, WED, THU, FRI, SAT,
+    UTC, NEXT
+    };
+
+/* parse translation table - table driven parsers can be your FRIEND!
+ */
+static const struct {
+    const char *name;	/* token name */
+    int value;	/* token id */
+    int plural;	/* is this plural? */
+} Specials[] = {
+    { "midnight", MIDNIGHT,0 },	/* 00:00:00 of today or tomorrow */
+    { "noon", NOON,0 },		/* 12:00:00 of today or tomorrow */
+    { "teatime", TEATIME,0 },	/* 16:00:00 of today or tomorrow */
+    { "am", AM,0 },		/* morning times for 0-12 clock */
+    { "pm", PM,0 },		/* evening times for 0-12 clock */
+    { "tomorrow", TOMORROW,0 },	/* execute 24 hours from time */
+    { "today", TODAY, 0 },	/* execute today - don't advance time */
+    { "now", NOW,0 },		/* opt prefix for PLUS */
+
+    { "minute", MINUTES,0 },	/* minutes multiplier */
+    { "minutes", MINUTES,1 },	/* (pluralized) */
+    { "hour", HOURS,0 },	/* hours ... */
+    { "hours", HOURS,1 },	/* (pluralized) */
+    { "day", DAYS,0 },		/* days ... */
+    { "days", DAYS,1 },		/* (pluralized) */
+    { "week", WEEKS,0 },	/* week ... */
+    { "weeks", WEEKS,1 },	/* (pluralized) */
+    { "month", MONTHS,0 },	/* month ... */
+    { "months", MONTHS,1 },	/* (pluralized) */
+    { "year", YEARS,0 },	/* year ... */
+    { "years", YEARS,1 },	/* (pluralized) */
+    { "jan", JAN,0 },
+    { "feb", FEB,0 },
+    { "mar", MAR,0 },
+    { "apr", APR,0 },
+    { "may", MAY,0 },
+    { "jun", JUN,0 },
+    { "jul", JUL,0 },
+    { "aug", AUG,0 },
+    { "sep", SEP,0 },
+    { "oct", OCT,0 },
+    { "nov", NOV,0 },
+    { "dec", DEC,0 },
+    { "january", JAN,0 },
+    { "february", FEB,0 },
+    { "march", MAR,0 },
+    { "april", APR,0 },
+    { "may", MAY,0 },
+    { "june", JUN,0 },
+    { "july", JUL,0 },
+    { "august", AUG,0 },
+    { "september", SEP,0 },
+    { "october", OCT,0 },
+    { "november", NOV,0 },
+    { "december", DEC,0 },
+    { "sunday", SUN, 0 },
+    { "sun", SUN, 0 },
+    { "monday", MON, 0 },
+    { "mon", MON, 0 },
+    { "tuesday", TUE, 0 },
+    { "tue", TUE, 0 },
+    { "wednesday", WED, 0 },
+    { "wed", WED, 0 },
+    { "thursday", THU, 0 },
+    { "thu", THU, 0 },
+    { "friday", FRI, 0 },
+    { "fri", FRI, 0 },
+    { "saturday", SAT, 0 },
+    { "sat", SAT, 0 },
+    { "utc", UTC, 0 },
+    { "next", NEXT, 0 },
+} ;
+
+/* File scope variables */
+
+static char **scp;	/* scanner - pointer at arglist */
+static char scc;	/* scanner - count of remaining arguments */
+static char *sct;	/* scanner - next char pointer in current argument */
+static int need;	/* scanner - need to advance to next argument */
+
+static char *sc_token;	/* scanner - token buffer */
+static size_t sc_len;   /* scanner - length of token buffer */
+static int sc_tokid;	/* scanner - token id */
+static int sc_tokplur;	/* scanner - is token plural? */
+
+/* Local functions */
+
+/*
+ * parse a token, checking if it's something special to us
+ */
+static int
+parse_token(char *arg)
+{
+    size_t i;
+
+    for (i=0; i<(sizeof Specials/sizeof Specials[0]); i++)
+	if (strcasecmp(Specials[i].name, arg) == 0) {
+	    sc_tokplur = Specials[i].plural;
+	    return sc_tokid = Specials[i].value;
+	}
+
+    /* not special - must be some random id */
+    return sc_tokid = ID;
+} /* parse_token */
+
+
+/*
+ * init_scanner() sets up the scanner to eat arguments
+ */
+static void
+init_scanner(int argc, char **argv)
+{
+    scp = argv;
+    scc = argc;
+    need = 1;
+    sc_len = 1;
+    while (argc-- > 0)
+	sc_len += strlen(*argv++);
+
+    if ((sc_token = malloc(sc_len)) == NULL)
+	errx(EXIT_FAILURE, "virtual memory exhausted");
+} /* init_scanner */
+
+/*
+ * token() fetches a token from the input stream
+ */
+static int
+token(void)
+{
+    int idx;
+
+    while (1) {
+	memset(sc_token, 0, sc_len);
+	sc_tokid = EOF;
+	sc_tokplur = 0;
+	idx = 0;
+
+	/* if we need to read another argument, walk along the argument list;
+	 * when we fall off the arglist, we'll just return EOF forever
+	 */
+	if (need) {
+	    if (scc < 1)
+		return sc_tokid;
+	    sct = *scp;
+	    scp++;
+	    scc--;
+	    need = 0;
+	}
+	/* eat whitespace now - if we walk off the end of the argument,
+	 * we'll continue, which puts us up at the top of the while loop
+	 * to fetch the next argument in
+	 */
+	while (isspace(*sct))
+	    ++sct;
+	if (!*sct) {
+	    need = 1;
+	    continue;
+	}
+
+	/* preserve the first character of the new token
+	 */
+	sc_token[0] = *sct++;
+
+	/* then see what it is
+	 */
+	if (isdigit(sc_token[0])) {
+	    while (isdigit(*sct))
+		sc_token[++idx] = *sct++;
+	    sc_token[++idx] = 0;
+	    return sc_tokid = NUMBER;
+	}
+	else if (isalpha(sc_token[0])) {
+	    while (isalpha(*sct))
+		sc_token[++idx] = *sct++;
+	    sc_token[++idx] = 0;
+	    return parse_token(sc_token);
+	}
+	else if (sc_token[0] == ':' || sc_token[0] == '.')
+	    return sc_tokid = DOT;
+	else if (sc_token[0] == '+')
+	    return sc_tokid = PLUS;
+	else if (sc_token[0] == '/')
+	    return sc_tokid = SLASH;
+	else if (sc_token[0] == ',')
+	    return sc_tokid = COMMA;
+	else
+	    return sc_tokid = JUNK;
+    } /* while (1) */
+} /* token */
+
+
+/*
+ * plonk() gives an appropriate error message if a token is incorrect
+ */
+static void
+plonk(int tok)
+{
+    panic((tok == EOF) ? "incomplete time"
+		       : "garbled time");
+} /* plonk */
+
+
+/*
+ * expect() gets a token and dies most horribly if it's not the token we want
+ */
+static void
+expect(int desired)
+{
+    if (token() != desired)
+	plonk(sc_tokid);	/* and we die here... */
+} /* expect */
+
+
+/*
+ * plus() parses a now + time
+ *
+ *  at [NOW] PLUS NUMBER [MINUTES|HOURS|DAYS|WEEKS|MONTHS|YEARS]
+ *
+ */
+
+static void
+plus(struct tm *tm)
+{
+    int delay;
+    int expectplur;
+
+    expect(NUMBER);
+
+    delay = atoi(sc_token);
+    expectplur = (delay != 1) ? 1 : 0;
+
+    switch (token()) {
+    case YEARS:
+	    tm->tm_year += delay;
+	    break;
+    case MONTHS:
+	    tm->tm_mon += delay;
+	    break;
+    case WEEKS:
+	    delay *= 7;
+    case DAYS:
+	    tm->tm_mday += delay;
+	    break;
+    case HOURS:
+	    tm->tm_hour += delay;
+	    break;
+    case MINUTES:
+	    tm->tm_min += delay;
+	    break;
+    default:
+	    plonk(sc_tokid);
+	    break;
+    }
+
+    if (expectplur != sc_tokplur)
+	warnx("pluralization is wrong");
+
+    tm->tm_isdst = -1;
+    if (mktime(tm) < 0)
+	plonk(sc_tokid);
+
+} /* plus */
+
+/*
+ *  at [NOW] NEXT [MINUTES|HOURS|DAYS|WEEKS|MONTHS|YEARS]
+ */
+static void
+next(struct tm *tm)
+{
+    switch (token()) {
+        case YEARS:
+            tm->tm_year++;
+            break;
+
+        case MONTHS:
+            tm->tm_mon++;
+            break;
+
+        case WEEKS:
+            tm->tm_mday += 7;
+            break;
+
+        case DAYS:
+            tm->tm_mday++;
+            break;
+
+        case HOURS:
+            tm->tm_hour++;
+            break;
+
+        case MINUTES:
+            tm->tm_min++;
+            break;
+
+        default:
+	    plonk(sc_tokid);
+            break;
+    }
+
+    if (sc_tokplur) {
+        warnx("pluralization is wrong");
+    }
+    tm->tm_isdst = -1;
+    if (mktime(tm) < 0) {
+        plonk(sc_tokid);
+    }
+} /* next */
+
+/*
+ * tod() computes the time of day
+ *     [NUMBER [DOT NUMBER] [AM|PM]] [UTC]
+ */
+static void
+tod(struct tm *tm)
+{
+    int hour, minute = 0;
+    size_t tlen;
+
+    hour = atoi(sc_token);
+    tlen = strlen(sc_token);
+
+    /* first pick out the time of day - if it's 4 digits, we assume
+     * a HHMM time, otherwise it's HH DOT MM time
+     */
+    if (token() == DOT) {
+        expect(NUMBER);
+        minute = atoi(sc_token);
+        if (minute > 59)
+            panic("garbled time");
+        token();
+    }
+    else if (tlen == 4) {
+        minute = hour%100;
+        if (minute > 59)
+            panic("garbled time");
+        hour = hour/100;
+    }
+
+    /* check if an AM or PM specifier was given
+     */
+    switch (sc_tokid) {
+        case AM:
+        case PM:
+            if (hour > 12)
+                panic("garbled time");
+
+            if (sc_tokid == PM) {
+                if (hour != 12)	/* 12:xx PM is 12:xx, not 24:xx */
+                    hour += 12;
+            } else {
+                if (hour == 12)	/* 12:xx AM is 00:xx, not 12:xx */
+                    hour = 0;
+            }
+            if (UTC != token())
+                break;		/* else fallthrough */
+
+        case UTC:
+            hour += tm->tm_gmtoff/(60*60);
+            while (hour < 0)
+                hour += 24;
+            minute += (tm->tm_gmtoff/60);
+            while (minute < 0)
+                minute += 60;
+            tm->tm_gmtoff = 0;
+            token();
+            break;
+        default:
+            if (hour > 23)
+                panic("garbled time");
+            break;
+    }
+
+    /* if we specify an absolute time, we don't want to bump the day even
+     * if we've gone past that time - but if we're specifying a time plus
+     * a relative offset, it's okay to bump things
+     * If minutes are the same assume tomorrow was meant
+     */
+    if ((sc_tokid == EOF || sc_tokid == PLUS) &&
+        ((tm->tm_hour > hour) || ((tm->tm_hour == hour) && (tm->tm_min >= minute)))) {
+        tm->tm_mday++;
+        tm->tm_wday++;
+    }
+
+    tm->tm_hour = hour;
+    tm->tm_min = minute;
+    if (tm->tm_hour == 24) {
+        tm->tm_hour = 0;
+        tm->tm_mday++;
+    }
+} /* tod */
+
+
+/*
+ * assign_date() assigns a date, wrapping to next year if needed
+ */
+static void
+assign_date(struct tm *tm, int mday, int mon, int year)
+{
+   /*
+    * Convert year into tm_year format (year - 1900).
+    * We may be given the year in 2 digit, 4 digit, or tm_year format.
+    */
+    if (year != -1) {
+	if (year >= TM_YEAR_BASE)
+		year -= TM_YEAR_BASE;   /* convert from 4 digit year */
+	else if (year < 100) {
+		/* convert from 2 digit year */
+		struct tm *lt;
+		time_t now;
+
+		time(&now);
+		lt = localtime(&now);
+
+		/* Convert to tm_year assuming current century */
+		year += (lt->tm_year / 100) * 100;
+
+		if (year == lt->tm_year - 1) year++;
+		else if (year < lt->tm_year)
+			year += 100;    /* must be in next century */
+	}
+    }
+
+    if (year < 0 &&
+	(tm->tm_mon > mon ||(tm->tm_mon == mon && tm->tm_mday > mday)))
+	year = tm->tm_year + 1;
+
+    tm->tm_mday = mday;
+    tm->tm_mon = mon;
+
+    if (year >= 0)
+	tm->tm_year = year;
+} /* assign_date */
+
+
+/*
+ * month() picks apart a month specification
+ *
+ *  /[<month> NUMBER [NUMBER]]           \
+ *  |[TOMORROW]                          |
+ *  |[DAY OF WEEK]                       |
+ *  |NUMBER [SLASH NUMBER [SLASH NUMBER]]|
+ *  |NEXT MINUTES|HOURS|DAYS|WEEKS|MONTHS|YEARS|
+ *  \PLUS NUMBER MINUTES|HOURS|DAYS|WEEKS/
+ */
+static void
+month(struct tm *tm)
+{
+    int year= (-1);
+    int mday = 0, wday, mon;
+    int tlen;
+
+    switch (sc_tokid) {
+    case PLUS:
+	    plus(tm);
+	    break;
+
+    case NEXT:
+	    next(tm);
+	    break;
+
+    case TOMORROW:
+	    /* do something tomorrow */
+	    tm->tm_mday ++;
+	    tm->tm_wday ++;
+    case TODAY:	/* force ourselves to stay in today - no further processing */
+	    token();
+	    break;
+
+    case JAN: case FEB: case MAR: case APR: case MAY: case JUN:
+    case JUL: case AUG: case SEP: case OCT: case NOV: case DEC:
+	    /* do month mday [,year]
+	     */
+	    mon = (sc_tokid-JAN);
+	    expect(NUMBER);
+	    mday = atoi(sc_token);
+	    if (token() == COMMA) {
+		if (token() == NUMBER) {
+		    year = atoi(sc_token);
+		    token();
+		}
+	    }
+	    assign_date(tm, mday, mon, year);
+	    if (sc_tokid == PLUS)
+		    plus(tm);
+	    break;
+
+    case SUN: case MON: case TUE:
+    case WED: case THU: case FRI:
+    case SAT:
+	    /* do a particular day of the week
+	     */
+	    wday = (sc_tokid-SUN);
+
+	    mday = tm->tm_mday;
+
+	    /* if this day is < today, then roll to next week
+	     */
+	    if (wday < tm->tm_wday)
+		mday += 7 - (tm->tm_wday - wday);
+	    else
+		mday += (wday - tm->tm_wday);
+
+	    tm->tm_wday = wday;
+
+	    assign_date(tm, mday, tm->tm_mon, tm->tm_year);
+	    break;
+
+    case NUMBER:
+	    /* get numeric MMDDYY, mm/dd/yy, or dd.mm.yy
+	     */
+	    tlen = (int)strlen(sc_token);
+	    mon = atoi(sc_token);
+	    token();
+
+	    if (sc_tokid == SLASH || sc_tokid == DOT) {
+		int sep;
+
+		sep = sc_tokid;
+		expect(NUMBER);
+		mday = atoi(sc_token);
+		if (token() == sep) {
+		    expect(NUMBER);
+		    year = atoi(sc_token);
+		    token();
+		}
+
+		/* flip months and days for European timing
+		 */
+		if (sep == DOT) {
+		    int x = mday;
+		    mday = mon;
+		    mon = x;
+		}
+	    }
+	    else if (tlen == 6 || tlen == 8) {
+		if (tlen == 8) {
+		    year = (mon % 10000) - TM_YEAR_BASE;
+		    mon /= 10000;
+		}
+		else {
+		    year = mon % 100;
+		    mon /= 100;
+		}
+		mday = mon % 100;
+		mon /= 100;
+	    }
+	    else
+		panic("garbled time");
+
+	    mon--;
+	    if (mon < 0 || mon > 11 || mday < 1 || mday > 31)
+		panic("garbled time");
+
+	    assign_date(tm, mday, mon, year);
+	    break;
+
+    case EOF:
+            break;
+
+    default:
+	    plonk(sc_tokid);
+	    break;
+    } /* case */
+} /* month */
+
+
+/* Global functions */
+
+time_t
+parsetime(int argc, char **argv)
+{
+    /* Do the argument parsing, die if necessary, and return the time the job
+     * should be run.
+     */
+    time_t nowtimer, runtimer;
+    struct tm nowtime, runtime;
+    int hr = 0;
+    /* this MUST be initialized to zero for midnight/noon/teatime */
+
+    nowtimer = time(NULL);
+    nowtime = *localtime(&nowtimer);
+
+    runtime = nowtime;
+    runtime.tm_sec = 0;
+    runtime.tm_isdst = 0;
+
+    if (argc <= optind)
+        usage();
+
+    init_scanner(argc-optind, argv+optind);
+
+    switch (token()) {
+        case NOW:
+            if (scc < 1) {
+                return nowtimer;
+            }
+            /* now is optional prefix for PLUS/NEXT tree */
+            switch (token()) {
+                case PLUS:
+                    plus(&runtime);
+                    break;
+
+                case NEXT:
+                    next(&runtime);
+                    break;
+
+                default:
+                    plonk(sc_token);
+                    break;
+            }
+            break;
+
+        case PLUS:
+            plus(&runtime);
+            break;
+
+        case NEXT:
+            next(&runtime);
+            break;
+
+        case NUMBER:
+            tod(&runtime);
+            month(&runtime);
+            break;
+
+            /* evil coding for TEATIME|NOON|MIDNIGHT - we've initialised
+             * hr to zero up above, then fall into this case in such a
+             * way so we add +12 +4 hours to it for teatime, +12 hours
+             * to it for noon, and nothing at all for midnight, then
+             * set our runtime to that hour before leaping into the
+             * month scanner
+             */
+        case TEATIME:
+            hr += 4;
+        case NOON:
+            hr += 12;
+        case MIDNIGHT:
+            if (runtime.tm_hour >= hr) {
+                runtime.tm_mday++;
+                runtime.tm_wday++;
+            }
+            runtime.tm_hour = hr;
+            runtime.tm_min = 0;
+            token();
+            /* FALLTHROUGH to month setting */
+        default:
+            month(&runtime);
+            break;
+    } /* ugly case statement */
+    expect(EOF);
+
+    /* convert back to time_t
+     */
+    runtime.tm_isdst = -1;
+    runtimer = mktime(&runtime);
+
+    if (runtimer < 0)
+        panic("garbled time");
+
+    if (nowtimer > runtimer)
+        panic("trying to travel back in time");
+
+    return runtimer;
+} /* parsetime */