Copy stable/9 to releng/9.3 as part of the 9.3-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Copy head to stable/9 as part of 9.0-RELEASE release cycle.

Approved by: re (implicit)

Pass correct size to write(2).

PR: bin/155915
Submitted by: John Levine
MFC after: 2 weeks

Fix memory-leak at the processing of multiple calendars.

Found with: Coverity Prevent(tm)
CID: 7085

Properly check the return value of chdir, even if it is a "this
should not happen" case.

Found with: Coverity Prevent(tm)
CID: 4932

While I am here, add more missing (unsigned char) casts to ctype() macros

Fix recent space skipping:
1) add missing (unsigned char) cast to ctype() macro
2) fix off-by-one error causing last letter always doubled

On request of joel@:

- Remove the 3rd clause of the UC Berkeley copyrighted files.
- For the files added copyrighted by me, move the "All rights
reserved" to the next line.

Long awaited update to the calendar system:

- Repeating events which span multiple years (because of -A, -B or
just the three days before the end of the year).

- Support for lunar events (full moon, new moon) and solar events
(equinox and solstice, chinese new year). Because of this, the
options -U (UTC offset) and -l (longitude) are available to
compensate if reality doesn't match the calculated values.

MFC after: 1 month

rewind(3) is already declared to return 'void', so no need for an explicit cast

Move functions which are only locally used into their C files and
make them static.

usage() in calendar.c
event_*() in io.c

PR: bin/118644
Approved by: bde@ (mentor)

style(9)ify usr.bin/calendar

PR: bin/118644
Approved by: bde@ (mentor)
MFC after: 1 week

style(9)

If we can't open a calendar file, don't guess why. Check the error
return and print a useful message.

Prior to this commit, access problems could give rise to messages that
the file didn't exist.

Never use getenv("HOME") without checking for NULL and non-zero

Obtained from: OpenBSD

Sort events by date.
Correct long-standing off-by-one error in -W option.

Submitted by: edwin@

Shorten some long lines. These files are still not completely
style(9) compliant.

ANSIfy function definitions.
Move some extern declarations to a header file.
Remove an unneeded extern declaration for optarg.

Search the include path for the argument to -f, to make lives easier for
those of us who want to figure out how old Jim Mock is, but only want to
type 'calendar -f calendar.freebsd'. This is done in a way that should
be totally backwards compatible with no noticable differences, at all.

Reviewed by: mux
MFC after: 4 weeks

Style improvements recommended by Bruce as a follow up to some
of the recent WARNS commits. The idea is:

1) FreeBSD id tags should follow vendor tags.
2) Vendor tags should not be compiled (though copyrights probably should).
3) There should be no blank line between including cdefs and __FBSDIF.

WARNS=2 fixup (mostly. Some are Hard To Fix(tm), so NO_WERROR is set)
Use __FBSDID().
Sort some headers.

Fix the type of the NULL arg to execl()

Idea from: Theo de Raadt <deraadt@openbsd.org>

Don't attempt to parse %c, use nl_langinfo instead

MAXPATHLEN includes the trailing NUL character, so there's no need to add 1
to it for the size of path.

Adapt to the new `ccp' now that the traditional-behaving /usr/bin/cpp
script is gone.

PR: 15932
Submitted by: Jos Backus <Jos.Backus@nl.origin-it.com>
Tested by: brian, Manfred Antar <mantar@pacbell.net>

$Id$ -> $FreeBSD$

Missed one in the previous commit.

Use err(3). Abort if strdup() returns NULL.

Don't call sendmail with "-f root" when run with "-a". This
eliminates the "X-authentication-warning" header line that
has been coming out since I made it so that sendmail is
run totally as the user whose calendar file is currently
being processed.

Fix a couple of typos.

Submitted by: bde

Really fix calendar to drop all permissions when
run with "calendar -a". Also don't ignore the return
values from the setuid/setgid calls.

Thanks to bde for making me this about this.

Initialize the group list when we switch uids when run as
root with "calendar -a". Drop all privs when execing other
programs.

Obtained from: OpenBSD

Localize even more.
FIx Orthodox Easter calculation
Better debug output

Allow to configure national Easter names.
Speedup my national months/days handling code.

Localize it
Handle Orthodox Eastern
-Wall cleanup

Change calendar to report the actual date for variable day events.
E.g. for Easter, and entries like "04/SunFirst" calendar will
now report:

04/05* Good Friday (2 days before easter)
04/07* First Sunday...

instead of:

Easter-2 Good Friday...
04/SunFirst First Sunday...

I also modified the calendar files to use the variable day format
for a lot of events so that they will be reported correctly.
E.g. U.S. daylight savings time is now listed as:

04/SunFirst Daylight savings time...

There are still a lot of wrong dates in there for some events
that move from year to year, but I don't have a good calendar handy
right now that I can use for reference.

- handle events that move around from year to year, i.e.,
``the last Monday in April'
- handle easter

new options
-f calendarfile
-A days
-B days

Calendar HOME directory ~/.calendar
don't sent mail if ~/.calendar/nomail exist