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authorGarrett Wollman <wollman@FreeBSD.org>1994-09-13 03:29:24 +0000
committerGarrett Wollman <wollman@FreeBSD.org>1994-09-13 03:29:24 +0000
commit8211a3a80cc65b96c334e0421c7afb25293c3a23 (patch)
tree7c0f1addb808a9cb99263be94b6164dee93ac96c
downloadsrc-8211a3a80cc65b96c334e0421c7afb25293c3a23.tar.gz
src-8211a3a80cc65b96c334e0421c7afb25293c3a23.zip
The latest and greatest timezone code from Arthur David Olson, part 1.
This import comprises the `zic' and `zdump' programs. Obtained from: Arthur David Olson, ftp://elsie.nci.nih.gov/pub/tzcode94g
Notes
Notes: svn path=/vendor/tzcode/dist/; revision=2702
-rw-r--r--usr.sbin/zic/README72
-rw-r--r--usr.sbin/zic/Theory120
-rw-r--r--usr.sbin/zic/ialloc.c103
-rw-r--r--usr.sbin/zic/scheck.c62
-rw-r--r--usr.sbin/zic/zdump.840
-rw-r--r--usr.sbin/zic/zdump.c307
-rw-r--r--usr.sbin/zic/zic.8412
-rw-r--r--usr.sbin/zic/zic.c1939
8 files changed, 3055 insertions, 0 deletions
diff --git a/usr.sbin/zic/README b/usr.sbin/zic/README
new file mode 100644
index 000000000000..5eea1a2bcc96
--- /dev/null
+++ b/usr.sbin/zic/README
@@ -0,0 +1,72 @@
+@(#)README 7.5
+
+"What time is it?" -- Richard Deacon as The King
+"Any time you want it to be." -- Frank Baxter as The Scientist
+ (from the Bell System film on time)
+
+The 1989 update of the time zone package featured
+
+* POSIXization (including interpretation of POSIX-style TZ environment
+ variables, provided by Guy Harris),
+* ANSIfication (including versions of "mktime" and "difftime"),
+* SVIDulation (an "altzone" variable)
+* MACHination (the "gtime" function)
+* corrections to some time zone data (including corrections to the rules
+ for Great Britain and New Zealand)
+* reference data from the United States Naval Observatory for folks who
+ want to do additional time zones
+* and the 1989 data for Saudi Arabia.
+
+(Since this code will be treated as "part of the implementation" in some places
+and as "part of the application" in others, there's no good way to name
+functions, such as timegm, that are not part of the proposed ANSI C standard;
+such functions have kept their old, underscore-free names in this update.)
+
+Support for the tz_abbr variable has been eliminated from this version
+(to forestall "kitchen sink" complaints from certain quarters :-).
+
+Support for Turbo C compilation has also been eliminated; it was present to
+allow checking in an ANSI-style environment, and such checking is now done with
+gcc.
+
+And the "dysize" function has disappeared; it was present to allow compilation
+of the "date" command on old BSD systems, and a version of "date" is now
+provided in the package. The "date" command is not created when you "make all"
+since it may lack options provided by the version distributed with your
+operating system, or may not interact with the system in the same way the
+native version does.
+
+Since POSIX frowns on correct leap second handling, the default behavior of
+the "zic" command (in the absence of a "-L" option) has been changed to omit
+leap second information from its output files.
+
+Be sure to read the comments in "Makefile" and make any changes
+needed to make things right for your system.
+
+To use the new functions, use a "-lz" option when compiling or linking.
+
+Historical local time information has been included here not because it
+is particularly useful, but rather to:
+
+* give an idea of the variety of local time rules that have
+ existed in the past and thus an idea of the variety that may be
+ expected in the future;
+
+* provide a test of the generality of the local time rule description
+ system.
+
+The information in the time zone data files is by no means authoritative;
+if you know that the rules are different from those in a file, by all means
+feel free to change file (and please send the changed version to
+tz@elsie.nci.nih.gov for use in the future). Europeans take note!
+
+Thanks to these Timezone Caballeros who've made major contributions to the
+time conversion package: Keith Bostic; Bob Devine; Paul Eggert; Robert Elz;
+Guy Harris; Mark Horton; John Mackin; and Bradley White. Thanks also to
+Michael Bloom, Art Neilson, Stephen Prince, John Sovereign, and Frank Wales
+for testing work. None of them are responsible for remaining errors.
+
+Look in the ~ftp/pub directory of elsie.nci.nih.gov (128.231.16.1)
+for updated versions of these files.
+
+Please send comments or information to ado@elsie.nci.nih.gov.
diff --git a/usr.sbin/zic/Theory b/usr.sbin/zic/Theory
new file mode 100644
index 000000000000..93a07c0f7da4
--- /dev/null
+++ b/usr.sbin/zic/Theory
@@ -0,0 +1,120 @@
+@(#)Theory 7.2
+
+These time and date functions are much like the System V Release 2.0 (SVR2)
+time and date functions; there are a few additions and changes to extend
+the usefulness of the SVR2 functions:
+
+* In SVR2, time display in a process is controlled by the environment
+ variable TZ, which "must be a three-letter time zone name, followed
+ by a number representing the difference between local time and
+ Greenwich Mean Time in hours, followed by an optional three-letter
+ name for a daylight time zone;" when the optional daylight time zone is
+ present, "standard U.S.A. Daylight Savings Time conversion is applied."
+ This means that SVR2 can't deal with other (for example, Australian)
+ daylight savings time rules, or situations where more than two
+ time zone abbreviations are used in an area.
+
+* In SVR2, time conversion information is compiled into each program
+ that does time conversion. This means that when time conversion
+ rules change (as in the United States in 1987), all programs that
+ do time conversion must be recompiled to ensure proper results.
+
+* In SVR2, time conversion fails for near-minimum or near-maximum
+ time_t values when doing conversions for places that don't use GMT.
+
+* In SVR2, there's no tamper-proof way for a process to learn the
+ system's best idea of local wall clock. (This is important for
+ applications that an administrator wants used only at certain times--
+ without regard to whether the user has fiddled the "TZ" environment
+ variable. While an administrator can "do everything in GMT" to get
+ around the problem, doing so is inconvenient and precludes handling
+ daylight savings time shifts--as might be required to limit phone
+ calls to off-peak hours.)
+
+* These functions can account for leap seconds, thanks to Bradley White
+ (bww@k.cs.cmu.edu).
+
+These are the changes that have been made to the SVR2 functions:
+
+* The "TZ" environment variable is used in generating the name of a file
+ from which time zone information is read (or is interpreted a la
+ POSIX); "TZ" is no longer constrained to be a three-letter time zone
+ name followed by a number of hours and an optional three-letter
+ daylight time zone name. The daylight saving time rules to be used
+ for a particular time zone are encoded in the time zone file;
+ the format of the file allows U.S., Australian, and other rules to be
+ encoded, and allows for situations where more than two time zone
+ abbreviations are used.
+
+ It was recognized that allowing the "TZ" environment variable to
+ take on values such as "US/Eastern" might cause "old" programs
+ (that expect "TZ" to have a certain form) to operate incorrectly;
+ consideration was given to using some other environment variable
+ (for example, "TIMEZONE") to hold the string used to generate the
+ time zone information file name. In the end, however, it was decided
+ to continue using "TZ": it is widely used for time zone purposes;
+ separately maintaining both "TZ" and "TIMEZONE" seemed a nuisance;
+ and systems where "new" forms of "TZ" might cause problems can simply
+ use TZ values such as "EST5EDT" which can be used both by
+ "new" programs (a la POSIX) and "old" programs (as zone names and
+ offsets).
+
+* To handle places where more than two time zone abbreviations are used,
+ the functions "localtime" and "gmtime" set tzname[tmp->tm_isdst]
+ (where "tmp" is the value the function returns) to the time zone
+ abbreviation to be used. This differs from SVR2, where the elements
+ of tzname are only changed as a result of calls to tzset.
+
+* Since the "TZ" environment variable can now be used to control time
+ conversion, the "daylight" and "timezone" variables are no longer
+ needed or supported. (You can use a compile-time option to cause
+ these variables to be defined and to be set by "tzset"; however, their
+ values will not be used by "localtime.")
+
+* The "localtime" function has been set up to deliver correct results
+ for near-minimum or near-maximum time_t values. (A comment in the
+ source code tells how to get compatibly wrong results).
+
+* A function "tzsetwall" has been added to arrange for the system's
+ best approximation to local wall clock time to be delivered by
+ subsequent calls to "localtime." Source code for portable
+ applications that "must" run on local wall clock time should call
+ "tzsetwall();" if such code is moved to "old" systems that don't provide
+ tzsetwall, you won't be able to generate an executable program.
+ (These time zone functions also arrange for local wall clock time to be
+ used if tzset is called--directly or indirectly--and there's no "TZ"
+ environment variable; portable applications should not, however, rely
+ on this behavior since it's not the way SVR2 systems behave.)
+
+Points of interest to folks with Version 7 or BSD systems:
+
+* The BSD "timezone" function is not present in this package;
+ it's impossible to reliably map timezone's arguments (a "minutes west
+ of GMT" value and a "daylight saving time in effect" flag) to a
+ time zone abbreviation, and we refuse to guess.
+ Programs that in the past used the timezone function may now examine
+ tzname[localtime(&clock)->tm_isdst] to learn the correct time
+ zone abbreviation to use. Alternatively, use localtime(&clock)->tm_zone
+ if this has been enabled.
+
+* The BSD gettimeofday function is not used in this package;
+ this lets users control the time zone used in doing time conversions.
+ Users who don't try to control things (that is, users who do not set
+ the environment variable TZ) get the time conversion specified in the
+ file "/etc/zoneinfo/localtime"; see the time zone compiler writeup for
+ information on how to initialize this file.
+
+The functions that are conditionally compiled if STD_INSPIRED is defined should,
+at this point, be looked on primarily as food for thought. They are not in
+any sense "standard compatible"--some are not, in fact, specified in *any*
+standard. They do, however, represent responses of various authors to
+standardization proposals.
+
+Other time conversion proposals, in particular the one developed by folks at
+Hewlett Packard, offer a wider selection of functions that provide capabilities
+beyond those provided here. The absence of such functions from this package
+is not meant to discourage the development, standardization, or use of such
+functions. Rather, their absence reflects the decision to make this package
+close to SVR2 (with the exceptions outlined above) to ensure its broad
+acceptability. If more powerful time conversion functions can be standardized,
+so much the better.
diff --git a/usr.sbin/zic/ialloc.c b/usr.sbin/zic/ialloc.c
new file mode 100644
index 000000000000..7dc2f2b494ac
--- /dev/null
+++ b/usr.sbin/zic/ialloc.c
@@ -0,0 +1,103 @@
+#ifndef lint
+#ifndef NOID
+static char elsieid[] = "@(#)ialloc.c 8.21";
+#endif /* !defined NOID */
+#endif /* !defined lint */
+
+/*LINTLIBRARY*/
+
+#include "private.h"
+
+#ifdef MAL
+#define NULLMAL(x) ((x) == NULL || (x) == MAL)
+#endif /* defined MAL */
+#ifndef MAL
+#define NULLMAL(x) ((x) == NULL)
+#endif /* !defined MAL */
+
+#define nonzero(n) (((n) == 0) ? 1 : (n))
+
+char * icalloc P((int nelem, int elsize));
+char * icatalloc P((char * old, const char * new));
+char * icpyalloc P((const char * string));
+char * imalloc P((int n));
+char * irealloc P((char * pointer, int size));
+void ifree P((char * pointer));
+
+char *
+imalloc(n)
+const int n;
+{
+#ifdef MAL
+ register char * result;
+
+ result = malloc((alloc_size_t) nonzero(n));
+ return NULLMAL(result) ? NULL : result;
+#endif /* defined MAL */
+#ifndef MAL
+ return malloc((alloc_size_t) nonzero(n));
+#endif /* !defined MAL */
+}
+
+char *
+icalloc(nelem, elsize)
+int nelem;
+int elsize;
+{
+ if (nelem == 0 || elsize == 0)
+ nelem = elsize = 1;
+ return calloc((alloc_size_t) nelem, (alloc_size_t) elsize);
+}
+
+char *
+irealloc(pointer, size)
+char * const pointer;
+const int size;
+{
+ if (NULLMAL(pointer))
+ return imalloc(size);
+ return realloc((genericptr_t) pointer, (alloc_size_t) nonzero(size));
+}
+
+char *
+icatalloc(old, new)
+char * const old;
+const char * const new;
+{
+ register char * result;
+ register int oldsize, newsize;
+
+ newsize = NULLMAL(new) ? 0 : strlen(new);
+ if (NULLMAL(old))
+ oldsize = 0;
+ else if (newsize == 0)
+ return old;
+ else oldsize = strlen(old);
+ if ((result = irealloc(old, oldsize + newsize + 1)) != NULL)
+ if (!NULLMAL(new))
+ (void) strcpy(result + oldsize, new);
+ return result;
+}
+
+char *
+icpyalloc(string)
+const char * const string;
+{
+ return icatalloc((char *) NULL, string);
+}
+
+void
+ifree(p)
+char * const p;
+{
+ if (!NULLMAL(p))
+ (void) free(p);
+}
+
+void
+icfree(p)
+char * const p;
+{
+ if (!NULLMAL(p))
+ (void) free(p);
+}
diff --git a/usr.sbin/zic/scheck.c b/usr.sbin/zic/scheck.c
new file mode 100644
index 000000000000..4d9616d645df
--- /dev/null
+++ b/usr.sbin/zic/scheck.c
@@ -0,0 +1,62 @@
+#ifndef lint
+#ifndef NOID
+static char elsieid[] = "@(#)scheck.c 8.11";
+#endif /* !defined lint */
+#endif /* !defined NOID */
+
+/*LINTLIBRARY*/
+
+#include "private.h"
+
+extern char * imalloc P((int n));
+extern void ifree P((char * p));
+
+char *
+scheck(string, format)
+const char * const string;
+const char * const format;
+{
+ register char * fbuf;
+ register const char * fp;
+ register char * tp;
+ register int c;
+ register char * result;
+ char dummy;
+ static char nada[1];
+
+ result = nada;
+ if (string == NULL || format == NULL)
+ return result;
+ fbuf = imalloc(2 * strlen(format) + 4);
+ if (fbuf == NULL)
+ return result;
+ fp = format;
+ tp = fbuf;
+ while ((*tp++ = c = *fp++) != '\0') {
+ if (c != '%')
+ continue;
+ if (*fp == '%') {
+ *tp++ = *fp++;
+ continue;
+ }
+ *tp++ = '*';
+ if (*fp == '*')
+ ++fp;
+ while (isascii(*fp) && isdigit(*fp))
+ *tp++ = *fp++;
+ if (*fp == 'l' || *fp == 'h')
+ *tp++ = *fp++;
+ else if (*fp == '[')
+ do *tp++ = *fp++;
+ while (*fp != '\0' && *fp != ']');
+ if ((*tp++ = *fp++) == '\0')
+ break;
+ }
+ *(tp - 1) = '%';
+ *tp++ = 'c';
+ *tp = '\0';
+ if (sscanf(string, fbuf, &dummy) != 1)
+ result = (char *) format;
+ ifree(fbuf);
+ return result;
+}
diff --git a/usr.sbin/zic/zdump.8 b/usr.sbin/zic/zdump.8
new file mode 100644
index 000000000000..23f49461c78a
--- /dev/null
+++ b/usr.sbin/zic/zdump.8
@@ -0,0 +1,40 @@
+.TH ZDUMP 8
+.SH NAME
+zdump \- time zone dumper
+.SH SYNOPSIS
+.B zdump
+[
+.B \-v
+] [
+.B \-c
+cutoffyear ] [ zonename ... ]
+.SH DESCRIPTION
+.I Zdump
+prints the current time in each
+.I zonename
+named on the command line.
+.PP
+These options are available:
+.TP
+.B \-v
+For each
+.I zonename
+on the command line,
+print the current time,
+the time at the lowest possible time value,
+the time one day after the lowest possible time value,
+the times both one second before and exactly at
+each detected time discontinuity,
+the time at one day less than the highest possible time value,
+and the time at the highest possible time value,
+Each line ends with
+.B isdst=1
+if the given time is Daylight Saving Time or
+.B isdst=0
+otherwise.
+.TP
+.BI "\-c " cutoffyear
+Cut off the verbose output near the start of the given year.
+.SH "SEE ALSO"
+newctime(3), tzfile(5), zic(8)
+.\" @(#)zdump.8 7.2
diff --git a/usr.sbin/zic/zdump.c b/usr.sbin/zic/zdump.c
new file mode 100644
index 000000000000..1e44d4a7974a
--- /dev/null
+++ b/usr.sbin/zic/zdump.c
@@ -0,0 +1,307 @@
+#ifndef lint
+#ifndef NOID
+static char elsieid[] = "@(#)zdump.c 7.10";
+#endif /* !defined NOID */
+#endif /* !defined lint */
+
+/*
+** This code has been made independent of the rest of the time
+** conversion package to increase confidence in the verification it provides.
+** You can use this code to help in verifying other implementations.
+*/
+
+#include "stdio.h" /* for stdout, stderr */
+#include "string.h" /* for strcpy */
+#include "sys/types.h" /* for time_t */
+#include "time.h" /* for struct tm */
+
+#ifndef MAX_STRING_LENGTH
+#define MAX_STRING_LENGTH 1024
+#endif /* !defined MAX_STRING_LENGTH */
+
+#ifndef TRUE
+#define TRUE 1
+#endif /* !defined TRUE */
+
+#ifndef FALSE
+#define FALSE 0
+#endif /* !defined FALSE */
+
+#ifndef EXIT_SUCCESS
+#define EXIT_SUCCESS 0
+#endif /* !defined EXIT_SUCCESS */
+
+#ifndef EXIT_FAILURE
+#define EXIT_FAILURE 1
+#endif /* !defined EXIT_FAILURE */
+
+#ifndef SECSPERMIN
+#define SECSPERMIN 60
+#endif /* !defined SECSPERMIN */
+
+#ifndef MINSPERHOUR
+#define MINSPERHOUR 60
+#endif /* !defined MINSPERHOUR */
+
+#ifndef SECSPERHOUR
+#define SECSPERHOUR (SECSPERMIN * MINSPERHOUR)
+#endif /* !defined SECSPERHOUR */
+
+#ifndef HOURSPERDAY
+#define HOURSPERDAY 24
+#endif /* !defined HOURSPERDAY */
+
+#ifndef EPOCH_YEAR
+#define EPOCH_YEAR 1970
+#endif /* !defined EPOCH_YEAR */
+
+#ifndef TM_YEAR_BASE
+#define TM_YEAR_BASE 1900
+#endif /* !defined TM_YEAR_BASE */
+
+#ifndef DAYSPERNYEAR
+#define DAYSPERNYEAR 365
+#endif /* !defined DAYSPERNYEAR */
+
+#ifndef isleap
+#define isleap(y) ((((y) % 4) == 0 && ((y) % 100) != 0) || ((y) % 400) == 0)
+#endif /* !defined isleap */
+
+extern char ** environ;
+extern int getopt();
+extern char * optarg;
+extern int optind;
+extern time_t time();
+extern char * tzname[2];
+extern void tzset();
+
+#ifdef USG
+extern void exit();
+extern void perror();
+#endif /* defined USG */
+
+static char * abbr();
+static long delta();
+static time_t hunt();
+static int longest;
+static char * progname;
+static void show();
+
+int
+main(argc, argv)
+int argc;
+char * argv[];
+{
+ register int i, c;
+ register int vflag;
+ register char * cutoff;
+ register int cutyear;
+ register long cuttime;
+ time_t now;
+ time_t t, newt;
+ time_t hibit;
+ struct tm tm, newtm;
+
+ progname = argv[0];
+ vflag = 0;
+ cutoff = NULL;
+ while ((c = getopt(argc, argv, "c:v")) == 'c' || c == 'v')
+ if (c == 'v')
+ vflag = 1;
+ else cutoff = optarg;
+ if (c != EOF ||
+ (optind == argc - 1 && strcmp(argv[optind], "=") == 0)) {
+ (void) fprintf(stderr,
+"%s: usage is %s [ -v ] [ -c cutoff ] zonename ...\n",
+ argv[0], argv[0]);
+ (void) exit(EXIT_FAILURE);
+ }
+ if (cutoff != NULL) {
+ int y;
+
+ cutyear = atoi(cutoff);
+ cuttime = 0;
+ for (y = EPOCH_YEAR; y < cutyear; ++y)
+ cuttime += DAYSPERNYEAR + isleap(y);
+ cuttime *= SECSPERHOUR * HOURSPERDAY;
+ }
+ (void) time(&now);
+ longest = 0;
+ for (i = optind; i < argc; ++i)
+ if (strlen(argv[i]) > longest)
+ longest = strlen(argv[i]);
+ for (hibit = 1; (hibit << 1) != 0; hibit <<= 1)
+ continue;
+ for (i = optind; i < argc; ++i) {
+ register char ** saveenv;
+ static char buf[MAX_STRING_LENGTH];
+ char * fakeenv[2];
+
+ if (strlen(argv[i]) + 4 > sizeof buf) {
+ (void) fflush(stdout);
+ (void) fprintf(stderr, "%s: argument too long -- %s\n",
+ progname, argv[i]);
+ (void) exit(EXIT_FAILURE);
+ }
+ (void) strcpy(buf, "TZ=");
+ (void) strcat(buf, argv[i]);
+ fakeenv[0] = buf;
+ fakeenv[1] = NULL;
+ saveenv = environ;
+ environ = fakeenv;
+ (void) tzset();
+ environ = saveenv;
+ show(argv[i], now, FALSE);
+ if (!vflag)
+ continue;
+ /*
+ ** Get lowest value of t.
+ */
+ t = hibit;
+ if (t > 0) /* time_t is unsigned */
+ t = 0;
+ show(argv[i], t, TRUE);
+ t += SECSPERHOUR * HOURSPERDAY;
+ show(argv[i], t, TRUE);
+ tm = *localtime(&t);
+ (void) strncpy(buf, abbr(&tm), (sizeof buf) - 1);
+ for ( ; ; ) {
+ if (cutoff != NULL && t >= cuttime)
+ break;
+ newt = t + SECSPERHOUR * 12;
+ if (cutoff != NULL && newt >= cuttime)
+ break;
+ if (newt <= t)
+ break;
+ newtm = *localtime(&newt);
+ if (delta(&newtm, &tm) != (newt - t) ||
+ newtm.tm_isdst != tm.tm_isdst ||
+ strcmp(abbr(&newtm), buf) != 0) {
+ newt = hunt(argv[i], t, newt);
+ newtm = *localtime(&newt);
+ (void) strncpy(buf, abbr(&newtm),
+ (sizeof buf) - 1);
+ }
+ t = newt;
+ tm = newtm;
+ }
+ /*
+ ** Get highest value of t.
+ */
+ t = ~((time_t) 0);
+ if (t < 0) /* time_t is signed */
+ t &= ~hibit;
+ t -= SECSPERHOUR * HOURSPERDAY;
+ show(argv[i], t, TRUE);
+ t += SECSPERHOUR * HOURSPERDAY;
+ show(argv[i], t, TRUE);
+ }
+ if (fflush(stdout) || ferror(stdout)) {
+ (void) fprintf(stderr, "%s: Error writing standard output ",
+ argv[0]);
+ (void) perror("standard output");
+ (void) exit(EXIT_FAILURE);
+ }
+ exit(EXIT_SUCCESS);
+
+ /* gcc -Wall pacifier */
+ for ( ; ; )
+ continue;
+}
+
+static time_t
+hunt(name, lot, hit)
+char * name;
+time_t lot;
+time_t hit;
+{
+ time_t t;
+ struct tm lotm;
+ struct tm tm;
+ static char loab[MAX_STRING_LENGTH];
+
+ lotm = *localtime(&lot);
+ (void) strncpy(loab, abbr(&lotm), (sizeof loab) - 1);
+ while ((hit - lot) >= 2) {
+ t = lot / 2 + hit / 2;
+ if (t <= lot)
+ ++t;
+ else if (t >= hit)
+ --t;
+ tm = *localtime(&t);
+ if (delta(&tm, &lotm) == (t - lot) &&
+ tm.tm_isdst == lotm.tm_isdst &&
+ strcmp(abbr(&tm), loab) == 0) {
+ lot = t;
+ lotm = tm;
+ } else hit = t;
+ }
+ show(name, lot, TRUE);
+ show(name, hit, TRUE);
+ return hit;
+}
+
+/*
+** Thanks to Paul Eggert (eggert@twinsun.com) for logic used in delta.
+*/
+
+static long
+delta(newp, oldp)
+struct tm * newp;
+struct tm * oldp;
+{
+ long result;
+ int tmy;
+
+ if (newp->tm_year < oldp->tm_year)
+ return -delta(oldp, newp);
+ result = 0;
+ for (tmy = oldp->tm_year; tmy < newp->tm_year; ++tmy)
+ result += DAYSPERNYEAR + isleap(tmy + TM_YEAR_BASE);
+ result += newp->tm_yday - oldp->tm_yday;
+ result *= HOURSPERDAY;
+ result += newp->tm_hour - oldp->tm_hour;
+ result *= MINSPERHOUR;
+ result += newp->tm_min - oldp->tm_min;
+ result *= SECSPERMIN;
+ result += newp->tm_sec - oldp->tm_sec;
+ return result;
+}
+
+static void
+show(zone, t, v)
+char * zone;
+time_t t;
+int v;
+{
+ struct tm * tmp;
+ extern struct tm * localtime();
+
+ (void) printf("%-*s ", longest, zone);
+ if (v)
+ (void) printf("%.24s GMT = ", asctime(gmtime(&t)));
+ tmp = localtime(&t);
+ (void) printf("%.24s", asctime(tmp));
+ if (*abbr(tmp) != '\0')
+ (void) printf(" %s", abbr(tmp));
+ if (v) {
+ (void) printf(" isdst=%d", tmp->tm_isdst);
+#ifdef TM_GMTOFF
+ (void) printf(" gmtoff=%ld", tmp->TM_GMTOFF);
+#endif /* defined TM_GMTOFF */
+ }
+ (void) printf("\n");
+}
+
+static char *
+abbr(tmp)
+struct tm * tmp;
+{
+ register char * result;
+ static char nada[1];
+
+ if (tmp->tm_isdst != 0 && tmp->tm_isdst != 1)
+ return nada;
+ result = tzname[tmp->tm_isdst];
+ return (result == NULL) ? nada : result;
+}
diff --git a/usr.sbin/zic/zic.8 b/usr.sbin/zic/zic.8
new file mode 100644
index 000000000000..6972d0e38b33
--- /dev/null
+++ b/usr.sbin/zic/zic.8
@@ -0,0 +1,412 @@
+.TH ZIC 8
+.SH NAME
+zic \- time zone compiler
+.SH SYNOPSIS
+.B zic
+[
+.B \-v
+] [
+.B \-d
+.I directory
+] [
+.B \-l
+.I localtime
+] [
+.B \-p
+.I posixrules
+] [
+.B \-L
+.I leapsecondfilename
+] [
+.B \-s
+] [
+.B \-y
+.I command
+] [
+.I filename
+\&... ]
+.SH DESCRIPTION
+.if t .ds lq ``
+.if t .ds rq ''
+.if n .ds lq \&"\"
+.if n .ds rq \&"\"
+.de q
+\\$3\*(lq\\$1\*(rq\\$2
+..
+.I Zic
+reads text from the file(s) named on the command line
+and creates the time conversion information files specified in this input.
+If a
+.I filename
+is
+.BR \- ,
+the standard input is read.
+.PP
+These options are available:
+.TP
+.BI "\-d " directory
+Create time conversion information files in the named directory rather than
+in the standard directory named below.
+.TP
+.BI "\-l " timezone
+Use the given time zone as local time.
+.I Zic
+will act as if the input contained a link line of the form
+.sp
+.ti +.5i
+Link \fItimezone\fP localtime
+.TP
+.BI "\-p " timezone
+Use the given time zone's rules when handling POSIX-format
+time zone environment variables.
+.I Zic
+will act as if the input contained a link line of the form
+.sp
+.ti +.5i
+Link \fItimezone\fP posixrules
+.TP
+.BI "\-L " leapsecondfilename
+Read leap second information from the file with the given name.
+If this option is not used,
+no leap second information appears in output files.
+.TP
+.B \-v
+Complain if a year that appears in a data file is outside the range
+of years representable by
+.IR time (2)
+values.
+.TP
+.B \-s
+Limit time values stored in output files to values that are the same
+whether they're taken to be signed or unsigned.
+You can use this option to generate SVVS-compatible files.
+.TP
+.BI "\-y " command
+Use the given
+.I command
+rather than
+.B yearistype
+when checking year types (see below).
+.PP
+Input lines are made up of fields.
+Fields are separated from one another by any number of white space characters.
+Leading and trailing white space on input lines is ignored.
+An unquoted sharp character (#) in the input introduces a comment which extends
+to the end of the line the sharp character appears on.
+White space characters and sharp characters may be enclosed in double quotes
+(") if they're to be used as part of a field.
+Any line that is blank (after comment stripping) is ignored.
+Non-blank lines are expected to be of one of three types:
+rule lines, zone lines, and link lines.
+.PP
+A rule line has the form
+.nf
+.ti +.5i
+.ta \w'Rule\0\0'u +\w'NAME\0\0'u +\w'FROM\0\0'u +\w'1973\0\0'u +\w'TYPE\0\0'u +\w'Apr\0\0'u +\w'lastSun\0\0'u +\w'2:00\0\0'u +\w'SAVE\0\0'u
+.sp
+Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
+.sp
+For example:
+.ti +.5i
+.sp
+Rule US 1967 1973 \- Apr lastSun 2:00 1:00 D
+.sp
+.fi
+The fields that make up a rule line are:
+.TP "\w'LETTER/S'u"
+.B NAME
+Gives the (arbitrary) name of the set of rules this rule is part of.
+.TP
+.B FROM
+Gives the first year in which the rule applies.
+Any integer year can be supplied; the Gregorian calendar is assumed.
+The word
+.B minimum
+(or an abbreviation) means the minimum year representable as an integer.
+The word
+.B maximum
+(or an abbreviation) means the maximum year representable as an integer.
+Rules can describe times that are not representable as time values,
+with the unrepresentable times ignored; this allows rules to be portable
+among hosts with differing time value types.
+.TP
+.B TO
+Gives the final year in which the rule applies.
+In addition to
+.B minimum
+and
+.B maximum
+(as above),
+the word
+.B only
+(or an abbreviation)
+may be used to repeat the value of the
+.B FROM
+field.
+.TP
+.B TYPE
+Gives the type of year in which the rule applies.
+If
+.B TYPE
+is
+.B \-
+then the rule applies in all years between
+.B FROM
+and
+.B TO
+inclusive;
+if
+.B TYPE
+is
+.BR uspres ,
+the rule applies in U.S. Presidential election years;
+if
+.B TYPE
+is
+.BR nonpres ,
+the rule applies in years other than U.S. Presidential election years.
+If
+.B TYPE
+is something else, then
+.I zic
+executes the command
+.ti +.5i
+\fByearistype\fP \fIyear\fP \fItype\fP
+.br
+to check the type of a year:
+an exit status of zero is taken to mean that the year is of the given type;
+an exit status of one is taken to mean that the year is not of the given type.
+.TP
+.B IN
+Names the month in which the rule takes effect.
+Month names may be abbreviated.
+.TP
+.B ON
+Gives the day on which the rule takes effect.
+Recognized forms include:
+.nf
+.in +.5i
+.sp
+.ta \w'Sun<=25\0\0'u
+5 the fifth of the month
+lastSun the last Sunday in the month
+lastMon the last Monday in the month
+Sun>=8 first Sunday on or after the eighth
+Sun<=25 last Sunday on or before the 25th
+.fi
+.in -.5i
+.sp
+Names of days of the week may be abbreviated or spelled out in full.
+Note that there must be no spaces within the
+.B ON
+field.
+.TP
+.B AT
+Gives the time of day at which the rule takes effect.
+Recognized forms include:
+.nf
+.in +.5i
+.sp
+.ta \w'1:28:13\0\0'u
+2 time in hours
+2:00 time in hours and minutes
+15:00 24-hour format time (for times after noon)
+1:28:14 time in hours, minutes, and seconds
+.fi
+.in -.5i
+.sp
+Any of these forms may be followed by the letter
+.B w
+if the given time is local
+.q "wall clock"
+time or
+.B s
+if the given time is local
+.q standard
+time; in the absence of
+.B w
+or
+.BR s ,
+wall clock time is assumed.
+.TP
+.B SAVE
+Gives the amount of time to be added to local standard time when the rule is in
+effect.
+This field has the same format as the
+.B AT
+field
+(although, of course, the
+.B w
+and
+.B s
+suffixes are not used).
+.TP
+.B LETTER/S
+Gives the
+.q "variable part"
+(for example, the
+.q S
+or
+.q D
+in
+.q EST
+or
+.q EDT )
+of time zone abbreviations to be used when this rule is in effect.
+If this field is
+.BR \- ,
+the variable part is null.
+.PP
+A zone line has the form
+.sp
+.nf
+.ti +.5i
+.ta \w'Zone\0\0'u +\w'Australia/Adelaide\0\0'u +\w'GMTOFF\0\0'u +\w'RULES/SAVE\0\0'u +\w'FORMAT\0\0'u
+Zone NAME GMTOFF RULES/SAVE FORMAT [UNTIL]
+.sp
+For example:
+.sp
+.ti +.5i
+Zone Australia/Adelaide 9:30 Aus CST 1971 Oct 31 2:00
+.sp
+.fi
+The fields that make up a zone line are:
+.TP "\w'GMTOFF'u"
+.B NAME
+The name of the time zone.
+This is the name used in creating the time conversion information file for the
+zone.
+.TP
+.B GMTOFF
+The amount of time to add to GMT to get standard time in this zone.
+This field has the same format as the
+.B AT
+and
+.B SAVE
+fields of rule lines;
+begin the field with a minus sign if time must be subtracted from GMT.
+.TP
+.B RULES/SAVE
+The name of the rule(s) that apply in the time zone or,
+alternately, an amount of time to add to local standard time.
+If this field is
+.B \-
+then standard time always applies in the time zone.
+.TP
+.B FORMAT
+The format for time zone abbreviations in this time zone.
+The pair of characters
+.B %s
+is used to show where the
+.q "variable part"
+of the time zone abbreviation goes.
+.TP
+.B UNTIL
+The time at which the GMT offset or the rule(s) change for a location.
+It is specified as a year, a month, a day, and a time of day.
+If this is specified,
+the time zone information is generated from the given GMT offset
+and rule change until the time specified.
+.IP
+The next line must be a
+.q continuation
+line; this has the same form as a zone line except that the
+string
+.q Zone
+and the name are omitted, as the continuation line will
+place information starting at the time specified as the
+.B UNTIL
+field in the previous line in the file used by the previous line.
+Continuation lines may contain an
+.B UNTIL
+field, just as zone lines do, indicating that the next line is a further
+continuation.
+.PP
+A link line has the form
+.sp
+.nf
+.ti +.5i
+.if t .ta \w'Link\0\0'u +\w'LINK-FROM\0\0'u
+.if n .ta \w'Link\0\0'u +\w'US/Eastern\0\0'u
+Link LINK-FROM LINK-TO
+.sp
+For example:
+.sp
+.ti +.5i
+Link US/Eastern EST5EDT
+.sp
+.fi
+The
+.B LINK-FROM
+field should appear as the
+.B NAME
+field in some zone line;
+the
+.B LINK-TO
+field is used as an alternate name for that zone.
+.PP
+Except for continuation lines,
+lines may appear in any order in the input.
+.PP
+Lines in the file that describes leap seconds have the following form:
+.nf
+.ti +.5i
+.ta \w'Leap\0\0'u +\w'YEAR\0\0'u +\w'MONTH\0\0'u +\w'DAY\0\0'u +\w'HH:MM:SS\0\0'u +\w'CORR\0\0'u
+.sp
+Leap YEAR MONTH DAY HH:MM:SS CORR R/S
+.sp
+For example:
+.ti +.5i
+.sp
+Leap 1974 Dec 31 23:59:60 + S
+.sp
+.fi
+The
+.BR YEAR ,
+.BR MONTH ,
+.BR DAY ,
+and
+.B HH:MM:SS
+fields tell when the leap second happened.
+The
+.B CORR
+field
+should be
+.q +
+if a second was added
+or
+.q -
+if a second was skipped.
+.\" There's no need to document the following, since it's impossible for more
+.\" than one leap second to be inserted or deleted at a time.
+.\" The C Standard is in error in suggesting the possibility.
+.\" See Terry J Quinn, The BIPM and the accurate measure of time,
+.\" Proc IEEE 79, 7 (July 1991), 894-905.
+.\" or
+.\" .q ++
+.\" if two seconds were added
+.\" or
+.\" .q --
+.\" if two seconds were skipped.
+The
+.B R/S
+field
+should be (an abbreviation of)
+.q Stationary
+if the leap second time given by the other fields should be interpreted as GMT
+or
+(an abbreviation of)
+.q Rolling
+if the leap second time given by the other fields should be interpreted as
+local wall clock time.
+.SH NOTE
+For areas with more than two types of local time,
+you may need to use local standard time in the
+.B AT
+field of the earliest transition time's rule to ensure that
+the earliest transition time recorded in the compiled file is correct.
+.SH FILE
+/usr/local/etc/zoneinfo standard directory used for created files
+.SH "SEE ALSO"
+newctime(3), tzfile(5), zdump(8)
+.\" @(#)zic.8 7.7
diff --git a/usr.sbin/zic/zic.c b/usr.sbin/zic/zic.c
new file mode 100644
index 000000000000..a0dc5f6bbdc3
--- /dev/null
+++ b/usr.sbin/zic/zic.c
@@ -0,0 +1,1939 @@
+#ifndef lint
+#ifndef NOID
+static char elsieid[] = "@(#)zic.c 7.22";
+#endif /* !defined NOID */
+#endif /* !defined lint */
+
+#include "private.h"
+#include "tzfile.h"
+
+struct rule {
+ const char * r_filename;
+ int r_linenum;
+ const char * r_name;
+
+ int r_loyear; /* for example, 1986 */
+ int r_hiyear; /* for example, 1986 */
+ const char * r_yrtype;
+
+ int r_month; /* 0..11 */
+
+ int r_dycode; /* see below */
+ int r_dayofmonth;
+ int r_wday;
+
+ long r_tod; /* time from midnight */
+ int r_todisstd; /* above is standard time if TRUE */
+ /* or wall clock time if FALSE */
+ long r_stdoff; /* offset from standard time */
+ const char * r_abbrvar; /* variable part of abbreviation */
+
+ int r_todo; /* a rule to do (used in outzone) */
+ time_t r_temp; /* used in outzone */
+};
+
+/*
+** r_dycode r_dayofmonth r_wday
+*/
+
+#define DC_DOM 0 /* 1..31 */ /* unused */
+#define DC_DOWGEQ 1 /* 1..31 */ /* 0..6 (Sun..Sat) */
+#define DC_DOWLEQ 2 /* 1..31 */ /* 0..6 (Sun..Sat) */
+
+struct zone {
+ const char * z_filename;
+ int z_linenum;
+
+ const char * z_name;
+ long z_gmtoff;
+ const char * z_rule;
+ const char * z_format;
+
+ long z_stdoff;
+
+ struct rule * z_rules;
+ int z_nrules;
+
+ struct rule z_untilrule;
+ time_t z_untiltime;
+};
+
+extern int emkdir P((const char * name, int mode));
+extern int getopt P((int argc, char * argv[], const char * options));
+extern char * icatalloc P((char * old, const char * new));
+extern char * icpyalloc P((const char * string));
+extern void ifree P((char * p));
+extern char * imalloc P((int n));
+extern char * irealloc P((char * old, int n));
+extern int link P((const char * fromname, const char * toname));
+extern char * optarg;
+extern int optind;
+extern char * scheck P((const char * string, const char * format));
+
+static void addtt P((time_t starttime, int type));
+static int addtype P((long gmtoff, const char * abbr, int isdst,
+ int ttisstd));
+static void leapadd P((time_t t, int positive, int rolling, int count));
+static void adjleap P((void));
+static void associate P((void));
+static int ciequal P((const char * ap, const char * bp));
+static void convert P((long val, char * buf));
+static void dolink P((const char * fromfile, const char * tofile));
+static void eat P((const char * name, int num));
+static void eats P((const char * name, int num,
+ const char * rname, int rnum));
+static long eitol P((int i));
+static void error P((const char * message));
+static char ** getfields P((char * buf));
+static long gethms P((const char * string, const char * errstrng,
+ int signable));
+static void infile P((const char * filename));
+static void inleap P((char ** fields, int nfields));
+static void inlink P((char ** fields, int nfields));
+static void inrule P((char ** fields, int nfields));
+static int inzcont P((char ** fields, int nfields));
+static int inzone P((char ** fields, int nfields));
+static int inzsub P((char ** fields, int nfields, int iscont));
+static int itsabbr P((const char * abbr, const char * word));
+static int itsdir P((const char * name));
+static int lowerit P((int c));
+static char * memcheck P((char * tocheck));
+static int mkdirs P((char * filename));
+static void newabbr P((const char * abbr));
+static long oadd P((long t1, long t2));
+static void outzone P((const struct zone * zp, int ntzones));
+static void puttzcode P((long code, FILE * fp));
+static int rcomp P((const genericptr_t leftp, const genericptr_t rightp));
+static time_t rpytime P((const struct rule * rp, int wantedy));
+static void rulesub P((struct rule * rp,
+ char * loyearp, char * hiyearp,
+ char * typep, char * monthp,
+ char * dayp, char * timep));
+static void setboundaries P((void));
+static time_t tadd P((time_t t1, long t2));
+static void usage P((void));
+static void writezone P((const char * name));
+static int yearistype P((int year, const char * type));
+
+static int charcnt;
+static int errors;
+static const char * filename;
+static int leapcnt;
+static int linenum;
+static int max_int;
+static time_t max_time;
+static int max_year;
+static int min_int;
+static time_t min_time;
+static int min_year;
+static int noise;
+static const char * rfilename;
+static int rlinenum;
+static const char * progname;
+static int timecnt;
+static int typecnt;
+static int tt_signed;
+
+/*
+** Line codes.
+*/
+
+#define LC_RULE 0
+#define LC_ZONE 1
+#define LC_LINK 2
+#define LC_LEAP 3
+
+/*
+** Which fields are which on a Zone line.
+*/
+
+#define ZF_NAME 1
+#define ZF_GMTOFF 2
+#define ZF_RULE 3
+#define ZF_FORMAT 4
+#define ZF_TILYEAR 5
+#define ZF_TILMONTH 6
+#define ZF_TILDAY 7
+#define ZF_TILTIME 8
+#define ZONE_MINFIELDS 5
+#define ZONE_MAXFIELDS 9
+
+/*
+** Which fields are which on a Zone continuation line.
+*/
+
+#define ZFC_GMTOFF 0
+#define ZFC_RULE 1
+#define ZFC_FORMAT 2
+#define ZFC_TILYEAR 3
+#define ZFC_TILMONTH 4
+#define ZFC_TILDAY 5
+#define ZFC_TILTIME 6
+#define ZONEC_MINFIELDS 3
+#define ZONEC_MAXFIELDS 7
+
+/*
+** Which files are which on a Rule line.
+*/
+
+#define RF_NAME 1
+#define RF_LOYEAR 2
+#define RF_HIYEAR 3
+#define RF_COMMAND 4
+#define RF_MONTH 5
+#define RF_DAY 6
+#define RF_TOD 7
+#define RF_STDOFF 8
+#define RF_ABBRVAR 9
+#define RULE_FIELDS 10
+
+/*
+** Which fields are which on a Link line.
+*/
+
+#define LF_FROM 1
+#define LF_TO 2
+#define LINK_FIELDS 3
+
+/*
+** Which fields are which on a Leap line.
+*/
+
+#define LP_YEAR 1
+#define LP_MONTH 2
+#define LP_DAY 3
+#define LP_TIME 4
+#define LP_CORR 5
+#define LP_ROLL 6
+#define LEAP_FIELDS 7
+
+/*
+** Year synonyms.
+*/
+
+#define YR_MINIMUM 0
+#define YR_MAXIMUM 1
+#define YR_ONLY 2
+
+static struct rule * rules;
+static int nrules; /* number of rules */
+
+static struct zone * zones;
+static int nzones; /* number of zones */
+
+struct link {
+ const char * l_filename;
+ int l_linenum;
+ const char * l_from;
+ const char * l_to;
+};
+
+static struct link * links;
+static int nlinks;
+
+struct lookup {
+ const char * l_word;
+ const int l_value;
+};
+
+static struct lookup const * byword P((const char * string,
+ const struct lookup * lp));
+
+static struct lookup const line_codes[] = {
+ { "Rule", LC_RULE },
+ { "Zone", LC_ZONE },
+ { "Link", LC_LINK },
+ { "Leap", LC_LEAP },
+ { NULL, 0}
+};
+
+static struct lookup const mon_names[] = {
+ { "January", TM_JANUARY },
+ { "February", TM_FEBRUARY },
+ { "March", TM_MARCH },
+ { "April", TM_APRIL },
+ { "May", TM_MAY },
+ { "June", TM_JUNE },
+ { "July", TM_JULY },
+ { "August", TM_AUGUST },
+ { "September", TM_SEPTEMBER },
+ { "October", TM_OCTOBER },
+ { "November", TM_NOVEMBER },
+ { "December", TM_DECEMBER },
+ { NULL, 0 }
+};
+
+static struct lookup const wday_names[] = {
+ { "Sunday", TM_SUNDAY },
+ { "Monday", TM_MONDAY },
+ { "Tuesday", TM_TUESDAY },
+ { "Wednesday", TM_WEDNESDAY },
+ { "Thursday", TM_THURSDAY },
+ { "Friday", TM_FRIDAY },
+ { "Saturday", TM_SATURDAY },
+ { NULL, 0 }
+};
+
+static struct lookup const lasts[] = {
+ { "last-Sunday", TM_SUNDAY },
+ { "last-Monday", TM_MONDAY },
+ { "last-Tuesday", TM_TUESDAY },
+ { "last-Wednesday", TM_WEDNESDAY },
+ { "last-Thursday", TM_THURSDAY },
+ { "last-Friday", TM_FRIDAY },
+ { "last-Saturday", TM_SATURDAY },
+ { NULL, 0 }
+};
+
+static struct lookup const begin_years[] = {
+ { "minimum", YR_MINIMUM },
+ { "maximum", YR_MAXIMUM },
+ { NULL, 0 }
+};
+
+static struct lookup const end_years[] = {
+ { "minimum", YR_MINIMUM },
+ { "maximum", YR_MAXIMUM },
+ { "only", YR_ONLY },
+ { NULL, 0 }
+};
+
+static struct lookup const leap_types[] = {
+ { "Rolling", TRUE },
+ { "Stationary", FALSE },
+ { NULL, 0 }
+};
+
+static const int len_months[2][MONSPERYEAR] = {
+ { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 },
+ { 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }
+};
+
+static const int len_years[2] = {
+ DAYSPERNYEAR, DAYSPERLYEAR
+};
+
+static time_t ats[TZ_MAX_TIMES];
+static unsigned char types[TZ_MAX_TIMES];
+static long gmtoffs[TZ_MAX_TYPES];
+static char isdsts[TZ_MAX_TYPES];
+static unsigned char abbrinds[TZ_MAX_TYPES];
+static char ttisstds[TZ_MAX_TYPES];
+static char chars[TZ_MAX_CHARS];
+static time_t trans[TZ_MAX_LEAPS];
+static long corr[TZ_MAX_LEAPS];
+static char roll[TZ_MAX_LEAPS];
+
+/*
+** Memory allocation.
+*/
+
+static char *
+memcheck(ptr)
+char * const ptr;
+{
+ if (ptr == NULL) {
+ (void) perror(progname);
+ (void) exit(EXIT_FAILURE);
+ }
+ return ptr;
+}
+
+#define emalloc(size) memcheck(imalloc(size))
+#define erealloc(ptr, size) memcheck(irealloc(ptr, size))
+#define ecpyalloc(ptr) memcheck(icpyalloc(ptr))
+#define ecatalloc(oldp, newp) memcheck(icatalloc(oldp, newp))
+
+/*
+** Error handling.
+*/
+
+static void
+eats(name, num, rname, rnum)
+const char * const name;
+const int num;
+const char * const rname;
+const int rnum;
+{
+ filename = name;
+ linenum = num;
+ rfilename = rname;
+ rlinenum = rnum;
+}
+
+static void
+eat(name, num)
+const char * const name;
+const int num;
+{
+ eats(name, num, (char *) NULL, -1);
+}
+
+static void
+error(string)
+const char * const string;
+{
+ /*
+ ** Match the format of "cc" to allow sh users to
+ ** zic ... 2>&1 | error -t "*" -v
+ ** on BSD systems.
+ */
+ (void) fprintf(stderr, "\"%s\", line %d: %s",
+ filename, linenum, string);
+ if (rfilename != NULL)
+ (void) fprintf(stderr, " (rule from \"%s\", line %d)",
+ rfilename, rlinenum);
+ (void) fprintf(stderr, "\n");
+ ++errors;
+}
+
+static void
+usage()
+{
+ (void) fprintf(stderr,
+"%s: usage is %s [ -s ] [ -v ] [ -l localtime ] [ -p posixrules ] [ -d directory ] \n\
+\t[ -L leapseconds ] [ -y yearistype ] [ filename ... ]\n",
+ progname, progname);
+ (void) exit(EXIT_FAILURE);
+}
+
+static const char * psxrules;
+static const char * lcltime;
+static const char * directory;
+static const char * leapsec;
+static const char * yitcommand;
+static int sflag = FALSE;
+
+int
+main(argc, argv)
+int argc;
+char * argv[];
+{
+ register int i, j;
+ register int c;
+
+#ifdef unix
+ (void) umask(umask(022) | 022);
+#endif /* defined unix */
+ progname = argv[0];
+ while ((c = getopt(argc, argv, "d:l:p:L:vsy:")) != EOF)
+ switch (c) {
+ default:
+ usage();
+ case 'd':
+ if (directory == NULL)
+ directory = optarg;
+ else {
+ (void) fprintf(stderr,
+"%s: More than one -d option specified\n",
+ progname);
+ (void) exit(EXIT_FAILURE);
+ }
+ break;
+ case 'l':
+ if (lcltime == NULL)
+ lcltime = optarg;
+ else {
+ (void) fprintf(stderr,
+"%s: More than one -l option specified\n",
+ progname);
+ (void) exit(EXIT_FAILURE);
+ }
+ break;
+ case 'p':
+ if (psxrules == NULL)
+ psxrules = optarg;
+ else {
+ (void) fprintf(stderr,
+"%s: More than one -p option specified\n",
+ progname);
+ (void) exit(EXIT_FAILURE);
+ }
+ break;
+ case 'y':
+ if (yitcommand == NULL)
+ yitcommand = optarg;
+ else {
+ (void) fprintf(stderr,
+"%s: More than one -y option specified\n",
+ progname);
+ (void) exit(EXIT_FAILURE);
+ }
+ break;
+ case 'L':
+ if (leapsec == NULL)
+ leapsec = optarg;
+ else {
+ (void) fprintf(stderr,
+"%s: More than one -L option specified\n",
+ progname);
+ (void) exit(EXIT_FAILURE);
+ }
+ break;
+ case 'v':
+ noise = TRUE;
+ break;
+ case 's':
+ sflag = TRUE;
+ break;
+ }
+ if (optind == argc - 1 && strcmp(argv[optind], "=") == 0)
+ usage(); /* usage message by request */
+ if (directory == NULL)
+ directory = TZDIR;
+ if (yitcommand == NULL)
+ yitcommand = "yearistype";
+
+ setboundaries();
+
+ if (optind < argc && leapsec != NULL) {
+ infile(leapsec);
+ adjleap();
+ }
+
+ zones = (struct zone *) emalloc(0);
+ rules = (struct rule *) emalloc(0);
+ links = (struct link *) emalloc(0);
+ for (i = optind; i < argc; ++i)
+ infile(argv[i]);
+ if (errors)
+ (void) exit(EXIT_FAILURE);
+ associate();
+ for (i = 0; i < nzones; i = j) {
+ /*
+ ** Find the next non-continuation zone entry.
+ */
+ for (j = i + 1; j < nzones && zones[j].z_name == NULL; ++j)
+ continue;
+ outzone(&zones[i], j - i);
+ }
+ /*
+ ** Make links.
+ */
+ for (i = 0; i < nlinks; ++i)
+ dolink(links[i].l_from, links[i].l_to);
+ if (lcltime != NULL)
+ dolink(lcltime, TZDEFAULT);
+ if (psxrules != NULL)
+ dolink(psxrules, TZDEFRULES);
+ return (errors == 0) ? EXIT_SUCCESS : EXIT_FAILURE;
+}
+
+static void
+dolink(fromfile, tofile)
+const char * const fromfile;
+const char * const tofile;
+{
+ register char * fromname;
+ register char * toname;
+
+ if (fromfile[0] == '/')
+ fromname = fromfile;
+ else {
+ fromname = ecpyalloc(directory);
+ fromname = ecatalloc(fromname, "/");
+ fromname = ecatalloc(fromname, fromfile);
+ }
+ if (tofile[0] == '/')
+ toname = tofile;
+ else {
+ toname = ecpyalloc(directory);
+ toname = ecatalloc(toname, "/");
+ toname = ecatalloc(toname, tofile);
+ }
+ /*
+ ** We get to be careful here since
+ ** there's a fair chance of root running us.
+ */
+ if (!itsdir(toname))
+ (void) remove(toname);
+ if (link(fromname, toname) != 0) {
+ if (mkdirs(toname) != 0)
+ (void) exit(EXIT_FAILURE);
+ if (link(fromname, toname) != 0) {
+ (void) fprintf(stderr, "%s: Can't link from %s to ",
+ progname, fromname);
+ (void) perror(toname);
+ (void) exit(EXIT_FAILURE);
+ }
+ }
+ if (fromname != fromfile)
+ ifree(fromname);
+ if (toname != tofile)
+ ifree(toname);
+}
+
+static void
+setboundaries()
+{
+ register time_t bit;
+ register int bii;
+
+ for (bit = 1; bit > 0; bit <<= 1)
+ continue;
+ if (bit == 0) { /* time_t is an unsigned type */
+ tt_signed = FALSE;
+ min_time = 0;
+ max_time = ~(time_t) 0;
+ if (sflag)
+ max_time >>= 1;
+ } else {
+ tt_signed = TRUE;
+ min_time = bit;
+ max_time = bit;
+ ++max_time;
+ max_time = -max_time;
+ if (sflag)
+ min_time = 0;
+ }
+ min_year = TM_YEAR_BASE + gmtime(&min_time)->tm_year;
+ max_year = TM_YEAR_BASE + gmtime(&max_time)->tm_year;
+
+ for (bii = 1; bii > 0; bii <<= 1)
+ continue;
+ min_int = bii;
+ max_int = -1 - bii;
+}
+
+static int
+itsdir(name)
+const char * const name;
+{
+ register char * myname;
+ register int accres;
+
+ myname = ecpyalloc(name);
+ myname = ecatalloc(myname, "/.");
+ accres = access(myname, 0);
+ ifree(myname);
+ return accres == 0;
+}
+
+/*
+** Associate sets of rules with zones.
+*/
+
+/*
+** Sort by rule name.
+*/
+
+static int
+rcomp(cp1, cp2)
+const genericptr_t cp1;
+const genericptr_t cp2;
+{
+ return strcmp(((struct rule *) cp1)->r_name,
+ ((struct rule *) cp2)->r_name);
+}
+
+static void
+associate()
+{
+ register struct zone * zp;
+ register struct rule * rp;
+ register int base, out;
+ register int i;
+
+ if (nrules != 0)
+ (void) qsort((genericptr_t) rules,
+ (qsort_size_t) nrules,
+ (qsort_size_t) sizeof *rules, rcomp);
+ for (i = 0; i < nzones; ++i) {
+ zp = &zones[i];
+ zp->z_rules = NULL;
+ zp->z_nrules = 0;
+ }
+ for (base = 0; base < nrules; base = out) {
+ rp = &rules[base];
+ for (out = base + 1; out < nrules; ++out)
+ if (strcmp(rp->r_name, rules[out].r_name) != 0)
+ break;
+ for (i = 0; i < nzones; ++i) {
+ zp = &zones[i];
+ if (strcmp(zp->z_rule, rp->r_name) != 0)
+ continue;
+ zp->z_rules = rp;
+ zp->z_nrules = out - base;
+ }
+ }
+ for (i = 0; i < nzones; ++i) {
+ zp = &zones[i];
+ if (zp->z_nrules == 0) {
+ /*
+ ** Maybe we have a local standard time offset.
+ */
+ eat(zp->z_filename, zp->z_linenum);
+ zp->z_stdoff = gethms(zp->z_rule, "unruly zone", TRUE);
+ /*
+ ** Note, though, that if there's no rule,
+ ** a '%s' in the format is a bad thing.
+ */
+ if (strchr(zp->z_format, '%') != 0)
+ error("%s in ruleless zone");
+ }
+ }
+ if (errors)
+ (void) exit(EXIT_FAILURE);
+}
+
+static void
+infile(name)
+const char * name;
+{
+ register FILE * fp;
+ register char ** fields;
+ register char * cp;
+ register const struct lookup * lp;
+ register int nfields;
+ register int wantcont;
+ register int num;
+ char buf[BUFSIZ];
+
+ if (strcmp(name, "-") == 0) {
+ name = "standard input";
+ fp = stdin;
+ } else if ((fp = fopen(name, "r")) == NULL) {
+ (void) fprintf(stderr, "%s: Can't open ", progname);
+ (void) perror(name);
+ (void) exit(EXIT_FAILURE);
+ }
+ wantcont = FALSE;
+ for (num = 1; ; ++num) {
+ eat(name, num);
+ if (fgets(buf, (int) sizeof buf, fp) != buf)
+ break;
+ cp = strchr(buf, '\n');
+ if (cp == NULL) {
+ error("line too long");
+ (void) exit(EXIT_FAILURE);
+ }
+ *cp = '\0';
+ fields = getfields(buf);
+ nfields = 0;
+ while (fields[nfields] != NULL) {
+ static char nada[1];
+
+ if (ciequal(fields[nfields], "-"))
+ fields[nfields] = nada;
+ ++nfields;
+ }
+ if (nfields == 0) {
+ /* nothing to do */
+ } else if (wantcont) {
+ wantcont = inzcont(fields, nfields);
+ } else {
+ lp = byword(fields[0], line_codes);
+ if (lp == NULL)
+ error("input line of unknown type");
+ else switch ((int) (lp->l_value)) {
+ case LC_RULE:
+ inrule(fields, nfields);
+ wantcont = FALSE;
+ break;
+ case LC_ZONE:
+ wantcont = inzone(fields, nfields);
+ break;
+ case LC_LINK:
+ inlink(fields, nfields);
+ wantcont = FALSE;
+ break;
+ case LC_LEAP:
+ if (name != leapsec)
+ (void) fprintf(stderr,
+"%s: Leap line in non leap seconds file %s\n",
+ progname, name);
+ else inleap(fields, nfields);
+ wantcont = FALSE;
+ break;
+ default: /* "cannot happen" */
+ (void) fprintf(stderr,
+"%s: panic: Invalid l_value %d\n",
+ progname, lp->l_value);
+ (void) exit(EXIT_FAILURE);
+ }
+ }
+ ifree((char *) fields);
+ }
+ if (ferror(fp)) {
+ (void) fprintf(stderr, "%s: Error reading ", progname);
+ (void) perror(filename);
+ (void) exit(EXIT_FAILURE);
+ }
+ if (fp != stdin && fclose(fp)) {
+ (void) fprintf(stderr, "%s: Error closing ", progname);
+ (void) perror(filename);
+ (void) exit(EXIT_FAILURE);
+ }
+ if (wantcont)
+ error("expected continuation line not found");
+}
+
+/*
+** Convert a string of one of the forms
+** h -h hh:mm -hh:mm hh:mm:ss -hh:mm:ss
+** into a number of seconds.
+** A null string maps to zero.
+** Call error with errstring and return zero on errors.
+*/
+
+static long
+gethms(string, errstring, signable)
+const char * string;
+const char * const errstring;
+const int signable;
+{
+ int hh, mm, ss, sign;
+
+ if (string == NULL || *string == '\0')
+ return 0;
+ if (!signable)
+ sign = 1;
+ else if (*string == '-') {
+ sign = -1;
+ ++string;
+ } else sign = 1;
+ if (sscanf(string, scheck(string, "%d"), &hh) == 1)
+ mm = ss = 0;
+ else if (sscanf(string, scheck(string, "%d:%d"), &hh, &mm) == 2)
+ ss = 0;
+ else if (sscanf(string, scheck(string, "%d:%d:%d"),
+ &hh, &mm, &ss) != 3) {
+ error(errstring);
+ return 0;
+ }
+ if (hh < 0 || hh >= HOURSPERDAY ||
+ mm < 0 || mm >= MINSPERHOUR ||
+ ss < 0 || ss > SECSPERMIN) {
+ error(errstring);
+ return 0;
+ }
+ return eitol(sign) *
+ (eitol(hh * MINSPERHOUR + mm) *
+ eitol(SECSPERMIN) + eitol(ss));
+}
+
+static void
+inrule(fields, nfields)
+register char ** const fields;
+const int nfields;
+{
+ static struct rule r;
+
+ if (nfields != RULE_FIELDS) {
+ error("wrong number of fields on Rule line");
+ return;
+ }
+ if (*fields[RF_NAME] == '\0') {
+ error("nameless rule");
+ return;
+ }
+ r.r_filename = filename;
+ r.r_linenum = linenum;
+ r.r_stdoff = gethms(fields[RF_STDOFF], "invalid saved time", TRUE);
+ rulesub(&r, fields[RF_LOYEAR], fields[RF_HIYEAR], fields[RF_COMMAND],
+ fields[RF_MONTH], fields[RF_DAY], fields[RF_TOD]);
+ r.r_name = ecpyalloc(fields[RF_NAME]);
+ r.r_abbrvar = ecpyalloc(fields[RF_ABBRVAR]);
+ rules = (struct rule *) erealloc((char *) rules,
+ (int) ((nrules + 1) * sizeof *rules));
+ rules[nrules++] = r;
+}
+
+static int
+inzone(fields, nfields)
+register char ** const fields;
+const int nfields;
+{
+ register int i;
+ static char * buf;
+
+ if (nfields < ZONE_MINFIELDS || nfields > ZONE_MAXFIELDS) {
+ error("wrong number of fields on Zone line");
+ return FALSE;
+ }
+ if (strcmp(fields[ZF_NAME], TZDEFAULT) == 0 && lcltime != NULL) {
+ buf = erealloc(buf, 132 + strlen(TZDEFAULT));
+ (void) sprintf(buf,
+"\"Zone %s\" line and -l option are mutually exclusive",
+ TZDEFAULT);
+ error(buf);
+ return FALSE;
+ }
+ if (strcmp(fields[ZF_NAME], TZDEFRULES) == 0 && psxrules != NULL) {
+ buf = erealloc(buf, 132 + strlen(TZDEFRULES));
+ (void) sprintf(buf,
+"\"Zone %s\" line and -p option are mutually exclusive",
+ TZDEFRULES);
+ error(buf);
+ return FALSE;
+ }
+ for (i = 0; i < nzones; ++i)
+ if (zones[i].z_name != NULL &&
+ strcmp(zones[i].z_name, fields[ZF_NAME]) == 0) {
+ buf = erealloc(buf, 132 +
+ strlen(fields[ZF_NAME]) +
+ strlen(zones[i].z_filename));
+ (void) sprintf(buf,
+"duplicate zone name %s (file \"%s\", line %d)",
+ fields[ZF_NAME],
+ zones[i].z_filename,
+ zones[i].z_linenum);
+ error(buf);
+ return FALSE;
+ }
+ return inzsub(fields, nfields, FALSE);
+}
+
+static int
+inzcont(fields, nfields)
+register char ** const fields;
+const int nfields;
+{
+ if (nfields < ZONEC_MINFIELDS || nfields > ZONEC_MAXFIELDS) {
+ error("wrong number of fields on Zone continuation line");
+ return FALSE;
+ }
+ return inzsub(fields, nfields, TRUE);
+}
+
+static int
+inzsub(fields, nfields, iscont)
+register char ** const fields;
+const int nfields;
+const int iscont;
+{
+ register char * cp;
+ static struct zone z;
+ register int i_gmtoff, i_rule, i_format;
+ register int i_untilyear, i_untilmonth;
+ register int i_untilday, i_untiltime;
+ register int hasuntil;
+
+ if (iscont) {
+ i_gmtoff = ZFC_GMTOFF;
+ i_rule = ZFC_RULE;
+ i_format = ZFC_FORMAT;
+ i_untilyear = ZFC_TILYEAR;
+ i_untilmonth = ZFC_TILMONTH;
+ i_untilday = ZFC_TILDAY;
+ i_untiltime = ZFC_TILTIME;
+ z.z_name = NULL;
+ } else {
+ i_gmtoff = ZF_GMTOFF;
+ i_rule = ZF_RULE;
+ i_format = ZF_FORMAT;
+ i_untilyear = ZF_TILYEAR;
+ i_untilmonth = ZF_TILMONTH;
+ i_untilday = ZF_TILDAY;
+ i_untiltime = ZF_TILTIME;
+ z.z_name = ecpyalloc(fields[ZF_NAME]);
+ }
+ z.z_filename = filename;
+ z.z_linenum = linenum;
+ z.z_gmtoff = gethms(fields[i_gmtoff], "invalid GMT offset", TRUE);
+ if ((cp = strchr(fields[i_format], '%')) != 0) {
+ if (*++cp != 's' || strchr(cp, '%') != 0) {
+ error("invalid abbreviation format");
+ return FALSE;
+ }
+ }
+ z.z_rule = ecpyalloc(fields[i_rule]);
+ z.z_format = ecpyalloc(fields[i_format]);
+ hasuntil = nfields > i_untilyear;
+ if (hasuntil) {
+ z.z_untilrule.r_filename = filename;
+ z.z_untilrule.r_linenum = linenum;
+ rulesub(&z.z_untilrule,
+ fields[i_untilyear],
+ "only",
+ "",
+ (nfields > i_untilmonth) ?
+ fields[i_untilmonth] : "Jan",
+ (nfields > i_untilday) ? fields[i_untilday] : "1",
+ (nfields > i_untiltime) ? fields[i_untiltime] : "0");
+ z.z_untiltime = rpytime(&z.z_untilrule,
+ z.z_untilrule.r_loyear);
+ if (iscont && nzones > 0 &&
+ z.z_untiltime > min_time &&
+ z.z_untiltime < max_time &&
+ zones[nzones - 1].z_untiltime > min_time &&
+ zones[nzones - 1].z_untiltime < max_time &&
+ zones[nzones - 1].z_untiltime >= z.z_untiltime) {
+error("Zone continuation line end time is not after end time of previous line");
+ return FALSE;
+ }
+ }
+ zones = (struct zone *) erealloc((char *) zones,
+ (int) ((nzones + 1) * sizeof *zones));
+ zones[nzones++] = z;
+ /*
+ ** If there was an UNTIL field on this line,
+ ** there's more information about the zone on the next line.
+ */
+ return hasuntil;
+}
+
+static void
+inleap(fields, nfields)
+register char ** const fields;
+const int nfields;
+{
+ register const char * cp;
+ register const struct lookup * lp;
+ register int i, j;
+ int year, month, day;
+ long dayoff, tod;
+ time_t t;
+
+ if (nfields != LEAP_FIELDS) {
+ error("wrong number of fields on Leap line");
+ return;
+ }
+ dayoff = 0;
+ cp = fields[LP_YEAR];
+ if (sscanf(cp, scheck(cp, "%d"), &year) != 1) {
+ /*
+ * Leapin' Lizards!
+ */
+ error("invalid leaping year");
+ return;
+ }
+ j = EPOCH_YEAR;
+ while (j != year) {
+ if (year > j) {
+ i = len_years[isleap(j)];
+ ++j;
+ } else {
+ --j;
+ i = -len_years[isleap(j)];
+ }
+ dayoff = oadd(dayoff, eitol(i));
+ }
+ if ((lp = byword(fields[LP_MONTH], mon_names)) == NULL) {
+ error("invalid month name");
+ return;
+ }
+ month = lp->l_value;
+ j = TM_JANUARY;
+ while (j != month) {
+ i = len_months[isleap(year)][j];
+ dayoff = oadd(dayoff, eitol(i));
+ ++j;
+ }
+ cp = fields[LP_DAY];
+ if (sscanf(cp, scheck(cp, "%d"), &day) != 1 ||
+ day <= 0 || day > len_months[isleap(year)][month]) {
+ error("invalid day of month");
+ return;
+ }
+ dayoff = oadd(dayoff, eitol(day - 1));
+ if (dayoff < 0 && !tt_signed) {
+ error("time before zero");
+ return;
+ }
+ t = (time_t) dayoff * SECSPERDAY;
+ /*
+ ** Cheap overflow check.
+ */
+ if (t / SECSPERDAY != dayoff) {
+ error("time overflow");
+ return;
+ }
+ tod = gethms(fields[LP_TIME], "invalid time of day", FALSE);
+ cp = fields[LP_CORR];
+ {
+ register int positive;
+ int count;
+
+ if (strcmp(cp, "") == 0) { /* infile() turns "-" into "" */
+ positive = FALSE;
+ count = 1;
+ } else if (strcmp(cp, "--") == 0) {
+ positive = FALSE;
+ count = 2;
+ } else if (strcmp(cp, "+") == 0) {
+ positive = TRUE;
+ count = 1;
+ } else if (strcmp(cp, "++") == 0) {
+ positive = TRUE;
+ count = 2;
+ } else {
+ error("illegal CORRECTION field on Leap line");
+ return;
+ }
+ if ((lp = byword(fields[LP_ROLL], leap_types)) == NULL) {
+ error("illegal Rolling/Stationary field on Leap line");
+ return;
+ }
+ leapadd(tadd(t, tod), positive, lp->l_value, count);
+ }
+}
+
+static void
+inlink(fields, nfields)
+register char ** const fields;
+const int nfields;
+{
+ struct link l;
+
+ if (nfields != LINK_FIELDS) {
+ error("wrong number of fields on Link line");
+ return;
+ }
+ if (*fields[LF_FROM] == '\0') {
+ error("blank FROM field on Link line");
+ return;
+ }
+ if (*fields[LF_TO] == '\0') {
+ error("blank TO field on Link line");
+ return;
+ }
+ l.l_filename = filename;
+ l.l_linenum = linenum;
+ l.l_from = ecpyalloc(fields[LF_FROM]);
+ l.l_to = ecpyalloc(fields[LF_TO]);
+ links = (struct link *) erealloc((char *) links,
+ (int) ((nlinks + 1) * sizeof *links));
+ links[nlinks++] = l;
+}
+
+static void
+rulesub(rp, loyearp, hiyearp, typep, monthp, dayp, timep)
+register struct rule * const rp;
+char * const loyearp;
+char * const hiyearp;
+char * const typep;
+char * const monthp;
+char * const dayp;
+char * const timep;
+{
+ register struct lookup const * lp;
+ register char * cp;
+
+ if ((lp = byword(monthp, mon_names)) == NULL) {
+ error("invalid month name");
+ return;
+ }
+ rp->r_month = lp->l_value;
+ rp->r_todisstd = FALSE;
+ cp = timep;
+ if (*cp != '\0') {
+ cp += strlen(cp) - 1;
+ switch (lowerit(*cp)) {
+ case 's':
+ rp->r_todisstd = TRUE;
+ *cp = '\0';
+ break;
+ case 'w':
+ rp->r_todisstd = FALSE;
+ *cp = '\0';
+ break;
+ }
+ }
+ rp->r_tod = gethms(timep, "invalid time of day", FALSE);
+ /*
+ ** Year work.
+ */
+ cp = loyearp;
+ if ((lp = byword(cp, begin_years)) != NULL) switch ((int) lp->l_value) {
+ case YR_MINIMUM:
+ rp->r_loyear = min_int;
+ break;
+ case YR_MAXIMUM:
+ rp->r_loyear = max_int;
+ break;
+ default: /* "cannot happen" */
+ (void) fprintf(stderr,
+ "%s: panic: Invalid l_value %d\n",
+ progname, lp->l_value);
+ (void) exit(EXIT_FAILURE);
+ } else if (sscanf(cp, scheck(cp, "%d"), &rp->r_loyear) != 1) {
+ error("invalid starting year");
+ return;
+ }
+ cp = hiyearp;
+ if ((lp = byword(cp, end_years)) != NULL) switch ((int) lp->l_value) {
+ case YR_MINIMUM:
+ rp->r_hiyear = min_int;
+ break;
+ case YR_MAXIMUM:
+ rp->r_hiyear = max_int;
+ break;
+ case YR_ONLY:
+ rp->r_hiyear = rp->r_loyear;
+ break;
+ default: /* "cannot happen" */
+ (void) fprintf(stderr,
+ "%s: panic: Invalid l_value %d\n",
+ progname, lp->l_value);
+ (void) exit(EXIT_FAILURE);
+ } else if (sscanf(cp, scheck(cp, "%d"), &rp->r_hiyear) != 1) {
+ error("invalid ending year");
+ return;
+ }
+ if (rp->r_loyear > rp->r_hiyear) {
+ error("starting year greater than ending year");
+ return;
+ }
+ if (*typep == '\0')
+ rp->r_yrtype = NULL;
+ else {
+ if (rp->r_loyear == rp->r_hiyear) {
+ error("typed single year");
+ return;
+ }
+ rp->r_yrtype = ecpyalloc(typep);
+ }
+ /*
+ ** Day work.
+ ** Accept things such as:
+ ** 1
+ ** last-Sunday
+ ** Sun<=20
+ ** Sun>=7
+ */
+ if ((lp = byword(dayp, lasts)) != NULL) {
+ rp->r_dycode = DC_DOWLEQ;
+ rp->r_wday = lp->l_value;
+ rp->r_dayofmonth = len_months[1][rp->r_month];
+ } else {
+ if ((cp = strchr(dayp, '<')) != 0)
+ rp->r_dycode = DC_DOWLEQ;
+ else if ((cp = strchr(dayp, '>')) != 0)
+ rp->r_dycode = DC_DOWGEQ;
+ else {
+ cp = dayp;
+ rp->r_dycode = DC_DOM;
+ }
+ if (rp->r_dycode != DC_DOM) {
+ *cp++ = 0;
+ if (*cp++ != '=') {
+ error("invalid day of month");
+ return;
+ }
+ if ((lp = byword(dayp, wday_names)) == NULL) {
+ error("invalid weekday name");
+ return;
+ }
+ rp->r_wday = lp->l_value;
+ }
+ if (sscanf(cp, scheck(cp, "%d"), &rp->r_dayofmonth) != 1 ||
+ rp->r_dayofmonth <= 0 ||
+ (rp->r_dayofmonth > len_months[1][rp->r_month])) {
+ error("invalid day of month");
+ return;
+ }
+ }
+}
+
+static void
+convert(val, buf)
+const long val;
+char * const buf;
+{
+ register int i;
+ register long shift;
+
+ for (i = 0, shift = 24; i < 4; ++i, shift -= 8)
+ buf[i] = val >> shift;
+}
+
+static void
+puttzcode(val, fp)
+const long val;
+FILE * const fp;
+{
+ char buf[4];
+
+ convert(val, buf);
+ (void) fwrite((genericptr_t) buf,
+ (fwrite_size_t) sizeof buf,
+ (fwrite_size_t) 1, fp);
+}
+
+static void
+writezone(name)
+const char * const name;
+{
+ register FILE * fp;
+ register int i, j;
+ static char * fullname;
+ static struct tzhead tzh;
+
+ fullname = erealloc(fullname,
+ strlen(directory) + 1 + strlen(name) + 1);
+ (void) sprintf(fullname, "%s/%s", directory, name);
+ if ((fp = fopen(fullname, "wb")) == NULL) {
+ if (mkdirs(fullname) != 0)
+ (void) exit(EXIT_FAILURE);
+ if ((fp = fopen(fullname, "wb")) == NULL) {
+ (void) fprintf(stderr, "%s: Can't create ", progname);
+ (void) perror(fullname);
+ (void) exit(EXIT_FAILURE);
+ }
+ }
+ convert(eitol(typecnt), tzh.tzh_ttisstdcnt);
+ convert(eitol(leapcnt), tzh.tzh_leapcnt);
+ convert(eitol(timecnt), tzh.tzh_timecnt);
+ convert(eitol(typecnt), tzh.tzh_typecnt);
+ convert(eitol(charcnt), tzh.tzh_charcnt);
+ (void) fwrite((genericptr_t) &tzh,
+ (fwrite_size_t) sizeof tzh,
+ (fwrite_size_t) 1, fp);
+ for (i = 0; i < timecnt; ++i) {
+ j = leapcnt;
+ while (--j >= 0)
+ if (ats[i] >= trans[j]) {
+ ats[i] = tadd(ats[i], corr[j]);
+ break;
+ }
+ puttzcode((long) ats[i], fp);
+ }
+ if (timecnt > 0)
+ (void) fwrite((genericptr_t) types,
+ (fwrite_size_t) sizeof types[0],
+ (fwrite_size_t) timecnt, fp);
+ for (i = 0; i < typecnt; ++i) {
+ puttzcode((long) gmtoffs[i], fp);
+ (void) putc(isdsts[i], fp);
+ (void) putc(abbrinds[i], fp);
+ }
+ if (charcnt != 0)
+ (void) fwrite((genericptr_t) chars,
+ (fwrite_size_t) sizeof chars[0],
+ (fwrite_size_t) charcnt, fp);
+ for (i = 0; i < leapcnt; ++i) {
+ if (roll[i]) {
+ if (timecnt == 0 || trans[i] < ats[0]) {
+ j = 0;
+ while (isdsts[j])
+ if (++j >= typecnt) {
+ j = 0;
+ break;
+ }
+ } else {
+ j = 1;
+ while (j < timecnt && trans[i] >= ats[j])
+ ++j;
+ j = types[j - 1];
+ }
+ puttzcode((long) tadd(trans[i], -gmtoffs[j]), fp);
+ } else puttzcode((long) trans[i], fp);
+ puttzcode((long) corr[i], fp);
+ }
+ for (i = 0; i < typecnt; ++i)
+ (void) putc(ttisstds[i], fp);
+ if (ferror(fp) || fclose(fp)) {
+ (void) fprintf(stderr, "%s: Write error on ", progname);
+ (void) perror(fullname);
+ (void) exit(EXIT_FAILURE);
+ }
+}
+
+static void
+outzone(zpfirst, zonecount)
+const struct zone * const zpfirst;
+const int zonecount;
+{
+ register const struct zone * zp;
+ register struct rule * rp;
+ register int i, j;
+ register int usestart, useuntil;
+ register time_t starttime, untiltime;
+ register long gmtoff;
+ register long stdoff;
+ register int year;
+ register long startoff;
+ register int startisdst;
+ register int startttisstd;
+ register int type;
+ char startbuf[BUFSIZ];
+
+ /*
+ ** Now. . .finally. . .generate some useful data!
+ */
+ timecnt = 0;
+ typecnt = 0;
+ charcnt = 0;
+ /*
+ ** A guess that may well be corrected later.
+ */
+ stdoff = 0;
+ /*
+ ** Thanks to Earl Chew (earl@dnd.icp.nec.com.au)
+ ** for noting the need to unconditionally initialize startttisstd.
+ */
+ startttisstd = FALSE;
+#ifdef lint
+ starttime = 0;
+#endif /* defined lint */
+ for (i = 0; i < zonecount; ++i) {
+ zp = &zpfirst[i];
+ usestart = i > 0 && (zp - 1)->z_untiltime > min_time;
+ useuntil = i < (zonecount - 1);
+ if (useuntil && zp->z_untiltime <= min_time)
+ continue;
+ gmtoff = zp->z_gmtoff;
+ eat(zp->z_filename, zp->z_linenum);
+ startisdst = -1;
+ if (zp->z_nrules == 0) {
+ stdoff = zp->z_stdoff;
+ (void) strcpy(startbuf, zp->z_format);
+ type = addtype(oadd(zp->z_gmtoff, stdoff),
+ startbuf, stdoff != 0, startttisstd);
+ if (usestart)
+ addtt(starttime, type);
+ else if (stdoff != 0)
+ addtt(min_time, type);
+ } else for (year = min_year; year <= max_year; ++year) {
+ if (useuntil && year > zp->z_untilrule.r_hiyear)
+ break;
+ /*
+ ** Mark which rules to do in the current year.
+ ** For those to do, calculate rpytime(rp, year);
+ */
+ for (j = 0; j < zp->z_nrules; ++j) {
+ rp = &zp->z_rules[j];
+ eats(zp->z_filename, zp->z_linenum,
+ rp->r_filename, rp->r_linenum);
+ rp->r_todo = year >= rp->r_loyear &&
+ year <= rp->r_hiyear &&
+ yearistype(year, rp->r_yrtype);
+ if (rp->r_todo)
+ rp->r_temp = rpytime(rp, year);
+ }
+ for ( ; ; ) {
+ register int k;
+ register time_t jtime, ktime;
+ register long offset;
+ char buf[BUFSIZ];
+
+ if (useuntil) {
+ /*
+ ** Turn untiltime into GMT
+ ** assuming the current gmtoff and
+ ** stdoff values.
+ */
+ untiltime = tadd(zp->z_untiltime,
+ -gmtoff);
+ if (!zp->z_untilrule.r_todisstd)
+ untiltime = tadd(untiltime,
+ -stdoff);
+ }
+ /*
+ ** Find the rule (of those to do, if any)
+ ** that takes effect earliest in the year.
+ */
+ k = -1;
+#ifdef lint
+ ktime = 0;
+#endif /* defined lint */
+ for (j = 0; j < zp->z_nrules; ++j) {
+ rp = &zp->z_rules[j];
+ if (!rp->r_todo)
+ continue;
+ eats(zp->z_filename, zp->z_linenum,
+ rp->r_filename, rp->r_linenum);
+ offset = gmtoff;
+ if (!rp->r_todisstd)
+ offset = oadd(offset, stdoff);
+ jtime = rp->r_temp;
+ if (jtime == min_time ||
+ jtime == max_time)
+ continue;
+ jtime = tadd(jtime, -offset);
+ if (k < 0 || jtime < ktime) {
+ k = j;
+ ktime = jtime;
+ }
+ }
+ if (k < 0)
+ break; /* go on to next year */
+ rp = &zp->z_rules[k];
+ rp->r_todo = FALSE;
+ if (useuntil && ktime >= untiltime)
+ break;
+ if (usestart) {
+ if (ktime < starttime) {
+ stdoff = rp->r_stdoff;
+ startoff = oadd(zp->z_gmtoff,
+ rp->r_stdoff);
+ (void) sprintf(startbuf, zp->z_format,
+ rp->r_abbrvar);
+ startisdst = rp->r_stdoff != 0;
+ continue;
+ }
+ usestart = FALSE;
+ if (ktime != starttime) {
+ if (startisdst < 0 &&
+ zp->z_gmtoff !=
+ (zp - 1)->z_gmtoff) {
+ type = (timecnt == 0) ? 0 :
+ types[timecnt - 1];
+ startoff = oadd(gmtoffs[type],
+ -(zp - 1)->z_gmtoff);
+ startisdst = startoff != 0;
+ startoff = oadd(startoff,
+ zp->z_gmtoff);
+ (void) strcpy(startbuf,
+ &chars[abbrinds[type]]);
+ }
+ if (startisdst >= 0)
+addtt(starttime, addtype(startoff, startbuf, startisdst, startttisstd));
+ }
+ }
+ eats(zp->z_filename, zp->z_linenum,
+ rp->r_filename, rp->r_linenum);
+ (void) sprintf(buf, zp->z_format,
+ rp->r_abbrvar);
+ offset = oadd(zp->z_gmtoff, rp->r_stdoff);
+ type = addtype(offset, buf, rp->r_stdoff != 0,
+ rp->r_todisstd);
+ addtt(ktime, type);
+ stdoff = rp->r_stdoff;
+ }
+ }
+ /*
+ ** Now we may get to set starttime for the next zone line.
+ */
+ if (useuntil) {
+ starttime = tadd(zp->z_untiltime, -gmtoff);
+ startttisstd = zp->z_untilrule.r_todisstd;
+ if (!startttisstd)
+ starttime = tadd(starttime, -stdoff);
+ }
+ }
+ writezone(zpfirst->z_name);
+}
+
+static void
+addtt(starttime, type)
+const time_t starttime;
+const int type;
+{
+ if (timecnt != 0 && type == types[timecnt - 1])
+ return; /* easy enough! */
+ if (timecnt == 0 && type == 0 && isdsts[0] == 0)
+ return; /* handled by default rule */
+ if (timecnt >= TZ_MAX_TIMES) {
+ error("too many transitions?!");
+ (void) exit(EXIT_FAILURE);
+ }
+ ats[timecnt] = starttime;
+ types[timecnt] = type;
+ ++timecnt;
+}
+
+static int
+addtype(gmtoff, abbr, isdst, ttisstd)
+const long gmtoff;
+const char * const abbr;
+const int isdst;
+const int ttisstd;
+{
+ register int i, j;
+
+ /*
+ ** See if there's already an entry for this zone type.
+ ** If so, just return its index.
+ */
+ for (i = 0; i < typecnt; ++i) {
+ if (gmtoff == gmtoffs[i] && isdst == isdsts[i] &&
+ strcmp(abbr, &chars[abbrinds[i]]) == 0 &&
+ ttisstd == ttisstds[i])
+ return i;
+ }
+ /*
+ ** There isn't one; add a new one, unless there are already too
+ ** many.
+ */
+ if (typecnt >= TZ_MAX_TYPES) {
+ error("too many local time types");
+ (void) exit(EXIT_FAILURE);
+ }
+ gmtoffs[i] = gmtoff;
+ isdsts[i] = isdst;
+ ttisstds[i] = ttisstd;
+
+ for (j = 0; j < charcnt; ++j)
+ if (strcmp(&chars[j], abbr) == 0)
+ break;
+ if (j == charcnt)
+ newabbr(abbr);
+ abbrinds[i] = j;
+ ++typecnt;
+ return i;
+}
+
+static void
+leapadd(t, positive, rolling, count)
+const time_t t;
+const int positive;
+const int rolling;
+int count;
+{
+ register int i, j;
+
+ if (leapcnt + (positive ? count : 1) > TZ_MAX_LEAPS) {
+ error("too many leap seconds");
+ (void) exit(EXIT_FAILURE);
+ }
+ for (i = 0; i < leapcnt; ++i)
+ if (t <= trans[i]) {
+ if (t == trans[i]) {
+ error("repeated leap second moment");
+ (void) exit(EXIT_FAILURE);
+ }
+ break;
+ }
+ do {
+ for (j = leapcnt; j > i; --j) {
+ trans[j] = trans[j - 1];
+ corr[j] = corr[j - 1];
+ roll[j] = roll[j - 1];
+ }
+ trans[i] = t;
+ corr[i] = positive ? 1L : eitol(-count);
+ roll[i] = rolling;
+ ++leapcnt;
+ } while (positive && --count != 0);
+}
+
+static void
+adjleap()
+{
+ register int i;
+ register long last = 0;
+
+ /*
+ ** propagate leap seconds forward
+ */
+ for (i = 0; i < leapcnt; ++i) {
+ trans[i] = tadd(trans[i], last);
+ last = corr[i] += last;
+ }
+}
+
+static int
+yearistype(year, type)
+const int year;
+const char * const type;
+{
+ static char * buf;
+ int result;
+
+ if (type == NULL || *type == '\0')
+ return TRUE;
+ if (strcmp(type, "uspres") == 0)
+ return (year % 4) == 0;
+ if (strcmp(type, "nonpres") == 0)
+ return (year % 4) != 0;
+ buf = erealloc(buf, 132 + strlen(yitcommand) + strlen(type));
+ (void) sprintf(buf, "%s %d %s", yitcommand, year, type);
+ result = system(buf);
+ if (result == 0)
+ return TRUE;
+ if (result == (1 << 8))
+ return FALSE;
+ error("Wild result from command execution");
+ (void) fprintf(stderr, "%s: command was '%s', result was %d\n",
+ progname, buf, result);
+ for ( ; ; )
+ (void) exit(EXIT_FAILURE);
+}
+
+static int
+lowerit(a)
+const int a;
+{
+ return (isascii(a) && isupper(a)) ? tolower(a) : a;
+}
+
+static int
+ciequal(ap, bp) /* case-insensitive equality */
+register const char * ap;
+register const char * bp;
+{
+ while (lowerit(*ap) == lowerit(*bp++))
+ if (*ap++ == '\0')
+ return TRUE;
+ return FALSE;
+}
+
+static int
+itsabbr(abbr, word)
+register const char * abbr;
+register const char * word;
+{
+ if (lowerit(*abbr) != lowerit(*word))
+ return FALSE;
+ ++word;
+ while (*++abbr != '\0')
+ do if (*word == '\0')
+ return FALSE;
+ while (lowerit(*word++) != lowerit(*abbr));
+ return TRUE;
+}
+
+static const struct lookup *
+byword(word, table)
+register const char * const word;
+register const struct lookup * const table;
+{
+ register const struct lookup * foundlp;
+ register const struct lookup * lp;
+
+ if (word == NULL || table == NULL)
+ return NULL;
+ /*
+ ** Look for exact match.
+ */
+ for (lp = table; lp->l_word != NULL; ++lp)
+ if (ciequal(word, lp->l_word))
+ return lp;
+ /*
+ ** Look for inexact match.
+ */
+ foundlp = NULL;
+ for (lp = table; lp->l_word != NULL; ++lp)
+ if (itsabbr(word, lp->l_word))
+ if (foundlp == NULL)
+ foundlp = lp;
+ else return NULL; /* multiple inexact matches */
+ return foundlp;
+}
+
+static char **
+getfields(cp)
+register char * cp;
+{
+ register char * dp;
+ register char ** array;
+ register int nsubs;
+
+ if (cp == NULL)
+ return NULL;
+ array = (char **) emalloc((int) ((strlen(cp) + 1) * sizeof *array));
+ nsubs = 0;
+ for ( ; ; ) {
+ while (isascii(*cp) && isspace(*cp))
+ ++cp;
+ if (*cp == '\0' || *cp == '#')
+ break;
+ array[nsubs++] = dp = cp;
+ do {
+ if ((*dp = *cp++) != '"')
+ ++dp;
+ else while ((*dp = *cp++) != '"')
+ if (*dp != '\0')
+ ++dp;
+ else error("Odd number of quotation marks");
+ } while (*cp != '\0' && *cp != '#' &&
+ (!isascii(*cp) || !isspace(*cp)));
+ if (isascii(*cp) && isspace(*cp))
+ ++cp;
+ *dp = '\0';
+ }
+ array[nsubs] = NULL;
+ return array;
+}
+
+static long
+oadd(t1, t2)
+const long t1;
+const long t2;
+{
+ register long t;
+
+ t = t1 + t2;
+ if ((t2 > 0 && t <= t1) || (t2 < 0 && t >= t1)) {
+ error("time overflow");
+ (void) exit(EXIT_FAILURE);
+ }
+ return t;
+}
+
+static time_t
+tadd(t1, t2)
+const time_t t1;
+const long t2;
+{
+ register time_t t;
+
+ if (t1 == max_time && t2 > 0)
+ return max_time;
+ if (t1 == min_time && t2 < 0)
+ return min_time;
+ t = t1 + t2;
+ if ((t2 > 0 && t <= t1) || (t2 < 0 && t >= t1)) {
+ error("time overflow");
+ (void) exit(EXIT_FAILURE);
+ }
+ return t;
+}
+
+/*
+** Given a rule, and a year, compute the date - in seconds since January 1,
+** 1970, 00:00 LOCAL time - in that year that the rule refers to.
+*/
+
+static time_t
+rpytime(rp, wantedy)
+register const struct rule * const rp;
+register const int wantedy;
+{
+ register int y, m, i;
+ register long dayoff; /* with a nod to Margaret O. */
+ register time_t t;
+
+ if (wantedy == min_int)
+ return min_time;
+ if (wantedy == max_int)
+ return max_time;
+ dayoff = 0;
+ m = TM_JANUARY;
+ y = EPOCH_YEAR;
+ while (wantedy != y) {
+ if (wantedy > y) {
+ i = len_years[isleap(y)];
+ ++y;
+ } else {
+ --y;
+ i = -len_years[isleap(y)];
+ }
+ dayoff = oadd(dayoff, eitol(i));
+ }
+ while (m != rp->r_month) {
+ i = len_months[isleap(y)][m];
+ dayoff = oadd(dayoff, eitol(i));
+ ++m;
+ }
+ i = rp->r_dayofmonth;
+ if (m == TM_FEBRUARY && i == 29 && !isleap(y)) {
+ if (rp->r_dycode == DC_DOWLEQ)
+ --i;
+ else {
+ error("use of 2/29 in non leap-year");
+ (void) exit(EXIT_FAILURE);
+ }
+ }
+ --i;
+ dayoff = oadd(dayoff, eitol(i));
+ if (rp->r_dycode == DC_DOWGEQ || rp->r_dycode == DC_DOWLEQ) {
+ register long wday;
+
+#define LDAYSPERWEEK ((long) DAYSPERWEEK)
+ wday = eitol(EPOCH_WDAY);
+ /*
+ ** Don't trust mod of negative numbers.
+ */
+ if (dayoff >= 0)
+ wday = (wday + dayoff) % LDAYSPERWEEK;
+ else {
+ wday -= ((-dayoff) % LDAYSPERWEEK);
+ if (wday < 0)
+ wday += LDAYSPERWEEK;
+ }
+ while (wday != eitol(rp->r_wday))
+ if (rp->r_dycode == DC_DOWGEQ) {
+ dayoff = oadd(dayoff, (long) 1);
+ if (++wday >= LDAYSPERWEEK)
+ wday = 0;
+ ++i;
+ } else {
+ dayoff = oadd(dayoff, (long) -1);
+ if (--wday < 0)
+ wday = LDAYSPERWEEK - 1;
+ --i;
+ }
+ if (i < 0 || i >= len_months[isleap(y)][m]) {
+ error("no day in month matches rule");
+ (void) exit(EXIT_FAILURE);
+ }
+ }
+ if (dayoff < 0 && !tt_signed)
+ return min_time;
+ t = (time_t) dayoff * SECSPERDAY;
+ /*
+ ** Cheap overflow check.
+ */
+ if (t / SECSPERDAY != dayoff)
+ return (dayoff > 0) ? max_time : min_time;
+ return tadd(t, rp->r_tod);
+}
+
+static void
+newabbr(string)
+const char * const string;
+{
+ register int i;
+
+ i = strlen(string) + 1;
+ if (charcnt + i > TZ_MAX_CHARS) {
+ error("too many, or too long, time zone abbreviations");
+ (void) exit(EXIT_FAILURE);
+ }
+ (void) strcpy(&chars[charcnt], string);
+ charcnt += eitol(i);
+}
+
+static int
+mkdirs(argname)
+char * const argname;
+{
+ register char * name;
+ register char * cp;
+
+ if (argname == NULL || *argname == '\0')
+ return 0;
+ cp = name = ecpyalloc(argname);
+ while ((cp = strchr(cp + 1, '/')) != 0) {
+ *cp = '\0';
+#ifndef unix
+ /*
+ ** MS-DOS drive specifier?
+ */
+ if (strlen(name) == 2 && isascii(name[0]) &&
+ isalpha(name[0]) && name[1] == ':') {
+ *cp = '/';
+ continue;
+ }
+#endif /* !defined unix */
+ if (!itsdir(name)) {
+ /*
+ ** It doesn't seem to exist, so we try to create it.
+ */
+ if (emkdir(name, 0755) != 0) {
+ (void) fprintf(stderr,
+ "%s: Can't create directory ",
+ progname);
+ (void) perror(name);
+ ifree(name);
+ return -1;
+ }
+ }
+ *cp = '/';
+ }
+ ifree(name);
+ return 0;
+}
+
+static long
+eitol(i)
+const int i;
+{
+ long l;
+
+ l = i;
+ if ((i < 0 && l >= 0) || (i == 0 && l != 0) || (i > 0 && l <= 0)) {
+ (void) fprintf(stderr,
+ "%s: %d did not sign extend correctly\n",
+ progname, i);
+ (void) exit(EXIT_FAILURE);
+ }
+ return l;
+}
+
+/*
+** UNIX is a registered trademark of AT&T.
+*/