MFC r326276:

various: general adoption of SPDX licensing ID tags.

Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error
prone - task.

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.

No functional change intended.

MFC r326738: pw(8): correct expiration period handling
and command line overrides to preconfigured values for -e, -p and -w flags.

Use non-negative symbols instead of magic values
in passwd_val/pw_password functions.

PR: 223431
Submitted by: Yuri Pankov (in part, patch for the manual)
Approved by: mav (mentor)
Relnotes: yes

MFC r302778

pw should sanitize the argument of -w.

Otherwise, it will silently disable the login for the selected account if
the argument is unrecognizable.

usr.sbin/pw/pw.h
usr.sbin/pw/pw_conf.c
usr.sbin/pw/pw_user.c
Use separate rules to validate boolean parameters and passwd
parameters. Error out if a password parameter cannot be parsed.

usr.sbin/pw/tests/Makefile
usr.sbin/pw/tests/crypt.c
usr.sbin/pw/tests/pw_useradd.sh
usr.sbin/pw/tests/pw_usermod.sh
Add tests for the validation. Also, enhance existing
password-related tests to actually validate that the correct hash is
written to master.passwd.

Copy head@r302406 to stable/11 as part of the 11.0-RELEASE cycle.
Prune svn:mergeinfo from the new branch, as nothing has been merged
here.

Additional commits post-branch will follow.

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

Simplify code for parsing extra groups

Use intmax_t rather than long long

Fix build on 32bits

Cleanup a bit includes

Rewrite parsing subcommands arguments of pw(8)

Now each subcommands checks its arguments in a dedicated functions.

This helps improving input validation, code readability/maintainability
While here:
- Add a -y option to pw userdel/usermod so it can maintain NIS servers if
nispasswd is not defined in pw.conf(5)
- Allow pw -r <rootdir> to remove directory with userdel -r
- Fix bug when renaming a user which was not renaming the user name it groups
it is a member of.
- Only parse pw.conf(5) when needed.

Remove things that crept in after badly checked revert

Partial revert of r286152

More work needed on the cli validation

Fix build

Fix formatting of new code
Fix sorting or errstr
Remove useless initialisation or errstr

Reported by: bde

Validate expiration days and password days from commmand line and pw.conf

Validate the max_uid/max_gid boundaries and entry type in pw.conf

Cast uid/git to uintmax_t when using printf-like functions so the size of
uid/gid size remains a implementation detail

Replace custom string array with stringlist(3)

Remove useless cast in printf and printf-like functions:
use %u for uid_t and gid_t

Move cleanup functions to the right place

Remove useless test before free()

Return early in case we cannot read the configuration file

This drops one level of indentation

Use calloc(3) instead of malloc(3) + memset(3)
While here check the return of calloc(3)

The initial logic for allocating the new string was wrong, the conversion
to strndup(3) duplicated the same mistake, actually strdup(3) is good enough
to allocate the new string.

Use strndup(3) instead of malloc(3) + memcpy(3)
Check the return of strndup

Remove useless call to extendarray

Remove now unused LNBUFSZ buffer size

Return from the function as early as possible

This reduces the depth of the if statements and improves clarity of the code

Use sbuf(9) instead of homebrewed buffered string

Simplify reading pw.conf(5) by using getline(3)

Stop hard-coding default directory mode as 0777.

Add home directory creation mode to pw.conf(5) and be a bit
more specific about the effect of the current umask on -M.

Handle snprintf() returning < 0 (not just -1)

MFC after: 2 weeks

Handle snprintf() returning -1.

MFC after: 2 weeks

Make the comment generated in /etc/pw.conf match reality

PR: misc/23451
Submitted by: Ben Rosengart, ben@narcissus.net

Catch up to the fact that we now have tcsh in the tree.

$Id$ -> $FreeBSD$

Remove some more warnings.

1) Do not blindly ignore file update errors which may occur due to concurrent
updating
2) Add -V <etcdir>, which allows maintaining user/group database in alternate
locations other than /etc.

Use err(3) instead of local redefinition. Add rcsid string.

Unquote default group in pw.conf.
PR: 4365
Submitted by: "Andrew L. Moore" <alm@mclink.com>

Revert $FreeBSD$ to $Id$

Make the long-awaited change from $Id$ to $FreeBSD$

This will make a number of things easier in the future, as well as (finally!)
avoiding the Id-smashing problem which has plagued developers for so long.

Boy, I'm glad we're not using sup anymore. This update would have been
insane otherwise.

Adds optional NIS passwd file updating and optionally rebuilding
NIS maps.

Suggested by: Peter Wemm

1) 200 users per group limitation removed and pw
will handle lines of any length in /etc/group.
2) Fixed bug with usermod -d not updating user's home
directory.
3) Minor formatting display changes/fixes with *show -P.

This commit was generated by cvs2svn to compensate for changes in r20302,
which included commits to RCS files with non-trunk default branches.

Copyright update by the author, to be more in line with our sample
copyright.

Submitted by: David Nugent

pw(8) -- a backend utility to manage the user and group databases.

sysinstall's new User&group menu will use it, hence it's a 2.2
candidate despite of providing new functionality.

Submitted by: David L. Nugent, <davidn@blaze.net.au>