Remove copyright strings ifdef'd out

We've ifdef'd out the copyright strings for some time now. Go ahead and
remove the ifdefs. Plus whatever other detritis was left over from other
recent removals. These copyright strings are present in the comments and
are largely from CSRG's attempt at adding their copyright to every
binary file (which modern interpretations of the license doesn't
require).

Sponsored by: Netflix

usr.bin: Remove ancient SCCS tags.

Remove ancient SCCS tags from the tree, automated scripting, with two
minor fixup to keep things compiling. All the common forms in the tree
were removed with a perl script.

Sponsored by: Netflix

Remove $FreeBSD$: one-line .c pattern

Remove /^[\s*]*__FBSDID\("\$FreeBSD\$"\);?\s*\n/

Mark usage function as __dead2 in programs where it does not return

In most cases, usage does not return, so mark them as __dead2. For the
cases where they do return, they have not been marked __dead2.

Reviewed by: imp
Pull Request: https://github.com/freebsd/freebsd-src/pull/735

General further adoption of SPDX licensing ID tags.

Mainly focus on files that use BSD 3-Clause license.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.

Special thanks to Wind River for providing access to "The Duke of
Highlander" tool: an older (2014) run over FreeBSD tree was useful as a
starting point.

The variable nargv is allocated but never freed, so free it when the it
is no longer used.

Submitted by: Thomas Rix <trix@juniper.net>
Reviewed by: ed
Approved by: sjg (mentor)
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D9652

Renumber copyright clause 4

Renumber cluase 4 to 3, per what everybody else did when BSD granted
them permission to remove clause 3. My insistance on keeping the same
numbering for legal reasons is too pedantic, so give up on that point.

Submitted by: Jan Schaumann <jschauma@stevens.edu>
Pull Request: https://github.com/freebsd/freebsd/pull/96

More -Wmissing-variable-declarations fixes.

In addition to adding `static' where possible:

- bin/date: Move `retval' into extern.h to make it visible to date.c.
- bin/ed: Move globally used variables into ed.h.
- sbin/camcontrol: Move `verbose' into camcontrol.h and fix shadow warnings.
- usr.bin/calendar: Remove unneeded variables.
- usr.bin/chat: Make `line' local instead of global.
- usr.bin/elfdump: Comment out unneeded function.
- usr.bin/rlogin: Use _Noreturn instead of __dead2.
- usr.bin/tset: Pull `Ospeed' into extern.h.
- usr.sbin/mfiutil: Put global variables in mfiutil.h.
- usr.sbin/pkg: Remove unused `os_corres'.
- usr.sbin/quotaon, usr.sbin/repquota: Remove unused `qfname'.

Replace index() and rindex() calls with strchr() and strrchr().

The index() and rindex() functions were marked LEGACY in the 2001
revision of POSIX and were subsequently removed from the 2008 revision.
The strchr() and strrchr() functions are part of the C standard.

This makes the source code a lot more consistent, as most of these C
files also call into other str*() routines. In fact, about a dozen
already perform strchr() calls.

Spelling fixes for usr.bin/

Check return code of setuid() and setgid() in finger.

While they will not fail in normal circumstances, better safe than
sorry.

MFC after: 1 week

Remove the advertising clause from UCB copyrighted files in usr.bin. This
is in accordance with the information provided at
ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change

Also add $FreeBSD$ to a few files to keep svn happy.

Discussed with: imp, rwatson

A new jail(8) with a configuration file, to replace the work currently done
by /etc/rc.d/jail.

Create the altix project branch. The altix project will add support
for the SGI Altix 350 to FreeBSD/ia64. The hardware used for porting
is a two-module system, consisting of a base compute module and a
CPU expansion module. SGI's NUMAFlex architecture can be an excellent
platform to test CPU affinity and NUMA-aware features in FreeBSD.

Migrate finger(1) towards utmpx.

It was already ported to use libulog, which makes it simpler now. Be
sure to catch the error returned by setutxdb(). Otherwise it may perform
a lookup on the utx.active database.

MFC r200793:

Plug a memory leak.

PR: bin/141836
Submitted by: Henning Petersen <henning.petersen at t-online.de>

Migrate finger(1) away from <utmp.h>.

Unfortunately it also uses lastlog, which means we must resort to local
extensions of the utmpx-interface. Because the user name and TTY name
are now nul-terminated, there is no need to copy around strings as
often.

Plug a memory leak.

PR: bin/141836
Submitted by: Henning Petersen <henning.petersen at t-online.de>
MFC after: 2 weeks

- Import the HEAD csup code which is the basis for the cvsmode work.

Remove -T from getopt() spec and usage string.

Submitted by: ru@

Remove T/TCP support, and the -T option which was needed to disable it.

MFC after: 3 weeks

Setting .nofinger will not hide you from root.

Sync program's usage() with manpage's SYNOPSIS.

Fixed a misspelling of 0 as NULL.

Add code to keep going if you're really intent on fingering someone, but
can't use utmp(5).

Back out previous commit - it was not well thought out.

Clue beaten in by: ume
Pointy hat to: sobomax

Fix POLA breakage in 1.29: IPv4 should be default. This makes `-4' option
a nop, but we'll probably want to keep it for compatibility with other
KAME-based systems.

Complained about by: Andrey Lakhno <land@dnepr.net>
MFC after: 3 days

ANSIify function definitions.
Add some constness to avoid some warnings.
Remove use register keyword.
Deal with missing/unneeded extern/prototypes.
Some minor type changes/casts to avoid warnings.

Reviewed by: md5

add -4 and -6 option to be able to specify an address family.

Requested by: matusita
MFC after: 1 week

Add -g option, which restricts printing of the gecos fields to just the user's
real name.

PR: bin/39462
Submitted by: Mike Makonnen <makonnen@pacbell.net>
Obtained from: NetBSD
MFC after: 1 week

remove __P

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 fix, remove 'register' and use __FBSDID().

Don't attempt to parse %c

Spelling
Remove unused #includes

-Wall cleanup.

PR: 22187

Do not allow `finger -m /somefile' as well.

Don't allow finger /somefile, only allow filname expansions from
inside /etc/finger.conf

PR: 21704

Don't drop out when we've processed argc - 1 names.... arguments
may expand to more than one user.

PR: 21228

Fix the -m option - broken by the last commit.

Submitted by: Mark Knight <markk@knigma.org>

Allow finger.conf to contain aliases for files that will be displayed
when fingered.

Submitted by: Mark Knight <markk@knigma.org>

Allow a /etc/finger.conf file that contains finger aliases
This allows people who's email address differs from their account name
to be fingerable.

Submitted by: Mark Knight <markk@knigma.org>

$Id$ -> $FreeBSD$

Clean up some ambiguous nested if/elses.

Impliment elements of TCP Wrappers's `safe_finger'.
* if run by root (or root process) drop privs
* ensure output size is not infinate (net finger only)
* ensure output lines are not infinate in length (net finger only)
* do not allow finger client to run longer than 3 minutes (net finger only)

Add rcsid, usage(). Silent -Wall. Use warn(3).

compare return value from getopt against -1 rather than EOF, per the final
posix standard on the topic.

Merge from Lite2

Import some parts of CSRG 4.4BSD-Lite2 usr.bin sources to fix tree build.

Allow the user to disable the use of T/TCP by setting the -T option.
This option becomes useless when all TCP stacks are fixed out there.

Change locale to LC_ALL, there is no bitmask

Add setlocale LC_TIME|LC_CTYPE

Fix finger not check all users ~/.nofinger, only for actually
matched. Close PR 539
Submitted by: tom@haven.uniserve.com

Add Sean Eric Fagan's support for a ~/.nofinger file for user who prefer
their privacy.
Submitted by: sef

Remove extra newline introduced in 44lite (oops)

Add code to pull options out of FINGER environment variable if present.
Yes, has same stupid bug as more(1), options must be specified as one
argument.

Submitted by: pst

Install Luke's enhancements for finger.

By default, behave like the old ugly 4.4bsd finger and print office
information instead of remote login information.

It's an easy one line fix to make it behave like most other vendor's
fingers if we decide to change the default.

Reviewed by: pst

BSD 4.4 Lite Usr.bin Sources