Commit Graph

44 Commits

Author SHA1 Message Date
Serge Hallyn
f93cf255d4 Update licensing info
Closes #238

Update all files to list SPDX license shortname.  Most files are
BSD 3 clause license.

The exceptions are:

serge@sl ~/src/shadow$ git grep SPDX-License | grep -v BSD-3-Clause
contrib/atudel:# SPDX-License-Identifier: BSD-4-Clause
lib/tcbfuncs.c: * SPDX-License-Identifier: 0BSD
libmisc/salt.c: * SPDX-License-Identifier: Unlicense
src/login_nopam.c: * SPDX-License-Identifier: Unlicense
src/nologin.c: * SPDX-License-Identifier: BSD-2-Clause
src/vipw.c: * SPDX-License-Identifier: GPL-2.0-or-later

Signed-off-by: Serge Hallyn <serge@hallyn.com>
2021-12-23 19:36:50 -06:00
Andy Zaugg
d7e2bd6fe1 Added documentation around CREATE_MAIL_SPOOL
Adding documentation aroud the parameter CREATE_MAIL_SPOOL in the
/etc/default/useradd file
2021-10-15 16:20:52 -05:00
tzccinct
83db204477 man: use the consistent value 0 to disable PASS_MIN_DAYS restriction 2021-06-12 12:55:57 +09:00
Iker Pedrosa
b8cbc2c113 login.defs: include HMAC_CRYPTO_ALGO key
Include the new HMAC_CRYPTO_ALGO key that is needed by pam_timestamp to
select the algorithm that is going to be used to calculate the message
authentication code.

pam_timestamp is currently using an embedded algorithm to calculate the
HMAC message, but the idea is to improve this behaviour by relying on
openssl's implementation. On top of that, the ability to change the
algorithm with a simple configuration change allows to simplify the
process of removing unsecure algorithms.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1947294
2021-05-06 17:31:53 +02:00
Jason Franklin
1566921dd8
Add detailed documentation for "NONEXISTENT" 2020-05-11 09:26:45 -04:00
Topi Miettinen
69301dfa24
login.defs: warn about weak choices
According to crypt(5), MD5 and DES should not be used for new
hashes. Also the default number of SHA rounds chosen by libc is orders
of magnitude too low for modern hardware. Let's warn the users about
weak choices.

Signed-off-by: Topi Miettinen <toiwoton@gmail.com>
2020-04-10 14:09:55 +03:00
Duncan Overbruck
085d04c3dd
add new HOME_MODE login.defs(5) option
This option can be used to set a separate mode for useradd(8) and
newusers(8) to create the home directories with.
If this option is not set, the current behavior of using UMASK
or the default umask is preserved.

There are many distributions that set UMASK to 077 by default just
to create home directories not readable by others and use things like
/etc/profile, bashrc or sudo configuration files to set a less
restrictive
umask. This has always resulted in bug reports because it is hard
to follow as users tend to change files like bashrc and are not about
setting the umask to counteract the umask set in /etc/login.defs.

A recent change in sudo has also resulted in many bug reports about
this. sudo now tries to respect the umask set by pam modules and on
systems where pam does not set a umask, the login.defs UMASK value is
used.
2020-01-12 16:18:32 +01:00
Serge Hallyn
93f1f35123 Revert "add new HOME_MODE login.defs(5) option"
Missing file

This reverts commit a847899b52.
2020-01-12 07:56:19 -06:00
Duncan Overbruck
a847899b52
add new HOME_MODE login.defs(5) option
This option can be used to set a separate mode for useradd(8) and
newusers(8) to create the home directories with.
If this option is not set, the current behavior of using UMASK
or the default umask is preserved.

There are many distributions that set UMASK to 077 by default just
to create home directories not readable by others and use things like
/etc/profile, bashrc or sudo configuration files to set a less
restrictive
umask. This has always resulted in bug reports because it is hard
to follow as users tend to change files like bashrc and are not about
setting the umask to counteract the umask set in /etc/login.defs.

A recent change in sudo has also resulted in many bug reports about
this. sudo now tries to respect the umask set by pam modules and on
systems where pam does not set a umask, the login.defs UMASK value is
used.
2020-01-11 22:27:39 +01:00
Tomas Mraz
ebad423023 Fix the default mentioned in man page for SUB_UID/GID_COUNT variables. 2019-01-31 13:30:59 +01:00
Tomas Mraz
4633164857 login.defs: Add LASTLOG_UID_MAX variable to limit lastlog to small uids.
As the large uids are usually provided by remote user identity and
authentication service, which also provide user login tracking,
there is no need to create a huge sparse file for them on every local
machine.

fixup! login.defs: Add LASTLOG_UID_MAX variable to limit lastlog to small uids.
2018-12-10 13:25:56 -06:00
Nicolas François
eceedf43cf Improve documentation.
* man/login.defs.d/SUB_GID_COUNT.xml: Document newusers behavior
	when the user already have subordinate group IDs.
	* man/login.defs.d/SUB_UID_COUNT.xml: Likewise.
	* man/login.defs.d/SUB_GID_COUNT.xml: Fix typo (MAX<->MIN).
	* man/login.defs.d/SUB_UID_COUNT.xml: Likewise.
2013-08-15 17:30:20 +02:00
Nicolas François
3bdf723bab Improve documentation.
* man/login.defs.d/SUB_GID_COUNT.xml: Document that the behavior
	of useradd and newusers depends on the existence of /etc/subgid.
	* man/login.defs.d/SUB_UID_COUNT.xml: Likewise for /etc/subuid.
2013-08-13 00:21:02 +02:00
Nicolas François
d611d54ed4 Allow disabling of subordinate IDs.
* configure.in: Add configure options --enable-subordinate-ids /
	--disable-subordinate-ids. Enabled by default.
	* lib/prototypes.h: Include <config.h> before using its macros.
	* lib/commonio.h, lib/commonio.c: Define commonio_append only when
	ENABLE_SUBIDS is defined.
	* lib/prototypes.h, libmisc/find_new_sub_gids.c,
	libmisc/find_new_sub_uids.c: Likewise.
	* lib/subordinateio.h, lib/subordinateio.c: Likewise.
	* libmisc/user_busy.c: Only check if subordinate IDs are in use if
	ENABLE_SUBIDS is defined.
	* src/Makefile.am: Create newgidmap and newuidmap only if
	ENABLE_SUBIDS is defined.
	* src/newusers.c: Check for ENABLE_SUBIDS to enable support for
	subordinate IDs.
	* src/useradd.c: Likewise.
	* src/userdel.c: Likewise.
	* src/usermod.c: Likewise.
	* man/Makefile.am: Install man1/newgidmap.1, man1/newuidmap.1,
	man5/subgid.5, and man5/subuid.5 only if ENABLE_SUBIDS is defined.
	* man/fr/Makefile.am: Install man1/newgidmap.1, man1/newuidmap.1,
	man5/subgid.5, and man5/subuid.5 (not translated yet).
	* man/generate_mans.mak: Add xsltproc conditionals
	subids/no_subids.
	* man/login.defs.d/SUB_GID_COUNT.xml: Add dependency on subids
	condition.
	* man/login.defs.d/SUB_UID_COUNT.xml: Likewise.
	* man/usermod.8.xml: Document options for subordinate IDs and
	reference subgid(5) / subuid(5) depending on the subids condition.
2013-08-11 15:46:59 +02:00
Nicolas François
95d1e146b2 Fix typos.
* man/login.defs.d/SUB_GID_COUNT.xml: Fix typo.
	* man/login.defs.d/SUB_UID_COUNT.xml: Likewise.
	* man/login.defs.d/SUB_UID_COUNT.xml: Fix copy-paste issue from
	SUB_GID_COUNT.
	* man/newgidmap.1.xml: Fix Typo.
	* src/useradd.c: Fix typos.
	* lib/subordinateio.c: Fix typos.
2013-08-06 20:59:13 +02:00
Eric W. Biederman
23fd6cb1da login.defs.5: Document the new variables in login.defs
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
2013-08-05 10:08:45 -05:00
nekral-guest
2aa73f7823 * man/useradd.8.xml, man/su.1.xml, man/po/da.po, man/po/ru.po,
man/po/fr.po, man/po/de.po, man/po/sv.po, man/po/pl.po,
	man/po/it.po, man/po/shadow-man-pages.pot, man/po/zh_CN.po: Fix
	two typos. Thanks to Giuseppe Sacco. Unfuzzy translations
	* po/kk.po, po/nb.po, po/el.po, po/ca.po, po/ja.po: Re-generate.
	* man/login.defs.d/ENV_PATH.xml, man/login.defs.d/ENV_SUPATH.xml:
	Fix typo.
2012-02-02 19:05:34 +00:00
nekral-guest
61bb0aa943 * man/useradd.8.xml, man/groupadd.8.xml, man/usermod.8.xml,
man/groupmod.8.xml: Avoid hardcoded values, and reference instead
	the configuration options (e.g. UID_MIN)
	* man/groupmod.8.xml, man/usermod.8.xml: Add missing reference to
	login.defs
	* man/login.defs.d/UID_MAX.xml, man/login.defs.d/SYS_UID_MAX.xml,
	man/login.defs.d/GID_MAX.xml, man/login.defs.d/SYS_GID_MAX.xml:
	Document the default values.
2011-11-19 14:33:53 +00:00
nekral-guest
8fcb361fb8 * man/login.defs.d/LOGIN_STRING.xml: Fix typo. 2011-10-15 16:01:07 +00:00
nekral-guest
93ee4927bc * man/login.defs.d/QUOTAS_ENAB.xml: Document the dependency
between /etc/limits and QUOTAS_ENAB.
2011-09-18 17:00:28 +00:00
bubulle
143f479869 Fix typos in manpages
Catalan translation updated
2011-06-01 11:58:04 +00:00
nekral-guest
4f8310dfde * man/newusers.8.xml, man/useradd.8.xml, man/groupadd.8.xml,
man/login.defs.d/UMASK.xml, man/login.defs.d/CREATE_HOME.xml,
	man/login.defs.d/LOGIN_RETRIES.xml: Fix typos: choosen, overriden,
	bahavior.
2010-04-04 23:17:11 +00:00
nekral-guest
cfce9890fb * etc/login.defs: Updated description of UMASK to indicate its
usage by pam_umask.
	* man/login.defs.d/UMASK.xml: Likewise.
2010-03-27 20:11:21 +00:00
nekral-guest
391a384715 2010-01-30 Paweł Hajdan, Jr. <phajdan.jr@gentoo.org>
* NEWS: Add support for TCB.
	* lib/tcbfuncs.h, lib/tcbfuncs.c, lib/Makefile.am: New library to
	support TCB.
	* lib/prototypes, libmisc/copydir.c (remove_tree): Add boolean
	parameter remove_root.
	* configure.in: Add conditional WITH_TCB.
	* src/userdel.c, src/usermod.c: Add support for TCB. Update call to
	remove_tree().
	* src/pwconv.c, src/pwunconv.c: Should not be used with TCB enabled.
	* src/vipw.c: Add support for TCB. Update call to remove_tree().
	* src/useradd.c: Add support for TCB. Open the shadow file outside
	of open_files().
	* src/chage.c: Add support for TCB.
	* src/Makefile.am: Install passwd sgid shadow when TCB is enabled.
	* lib/getdefs.c, man/vipw.8.xml, man/login.defs.5.xml,
	man/login.defs/TCB_AUTH_GROUP.xml, man/login.defs/USE_TCB.xml,
	man/login.defs/TCB_SYMLINKS.xml, man/generate_mans.mak,
	man/generate_mans.deps, man/Makefile.am: New configuration
	parameters: TCB_AUTH_GROUP, TCB_SYMLINKS, USE_TCB.
	* lib/shadowio.c, lib/commonio.c: Add support for TCB.
2010-03-04 18:11:13 +00:00
nekral-guest
e770e87035 * NEWS, man/login.defs.d/ENV_SUPATH.xml, libmisc/setupenv.c:
Harmonize other paths and documentation with previous
	change.
2009-11-01 16:59:48 +00:00
nekral-guest
9031103c24 * man/login.defs.d/ENCRYPT_METHOD.xml: Avoid using sub-lists. They
break the groff formatting.
2009-08-21 15:02:32 +00:00
nekral-guest
647c22c85a * man/login.defs.d/ENVIRON_FILE.xml: Document the format for
comments.
2009-06-04 17:23:08 +00:00
nekral-guest
39b17ee5d5 * man/usermod.8.xml, man/userdel.8.xml, man/useradd.8.xml:
Harmonize formatting of login.defs and default/useradd variables.
	Use an <option> tag.
	* man/usermod.8.xml: Added reference to gshadow(5).
	* man/login.defs.d/USERDEL_CMD.xml: Shorten the lines of the
	USERDEL_CMD example.
2009-05-21 12:02:12 +00:00
nekral-guest
5dead2b296 * man/login.defs.d/GID_MAX.xml: Fixed typo. useradd was specified
twice.
2009-05-18 22:45:39 +00:00
nekral-guest
8eaa6f8b4c * man/login.defs.d/CONSOLE.xml: Document the format of the CONSOLE
file.
2009-05-16 17:08:44 +00:00
nekral-guest
a9b8fdc3c9 * src/userdel.c, man/login.defs.d/USERDEL_CMD.xml: Move the
USERDEL_CMD script example from the source code to the
	documentation.
2009-05-12 19:23:46 +00:00
nekral-guest
3f649c5504 * man/login.defs.d/ENCRYPT_METHOD.xml,
man/login.defs.d/MD5_CRYPT_ENAB.xml,
	man/login.defs.d/SHA_CRYPT_MIN_ROUNDS.xml: Updated note for PAM
	enabled versions. These variables are only used for group
	passwords in this case.
2009-05-09 13:16:10 +00:00
nekral-guest
4e32b9fea9 * man/login.defs.d/MAX_MEMBERS_PER_GROUP.xml,
man/login.defs.d/CONSOLE_GROUPS.xml: Fix typos.
2009-04-11 22:36:11 +00:00
nekral-guest
a684cadbb6 * man/useradd.8.xml, man/login.defs.d/CREATE_HOME.xml,
man/login.defs.5.xml: Document the CREATE_HOME variable.
2009-01-19 10:00:53 +00:00
nekral-guest
de60b7b2de * man/login.defs.d/UMASK.xml: Indicate how UMASK is used and
limitations.
2009-01-19 09:51:00 +00:00
nekral-guest
4b2f537795 * man/*.xml, man/login.defs.d/*.xml: Added copyright and licence
header.
2008-10-11 11:44:43 +00:00
nekral-guest
a279244709 * man/login.defs.d/USERGROUPS_ENAB.xml: Fix typo: new <para> tag
before the previous one is closed. This caused a missng
	explanation for USERGROUPS_ENAB.
2008-09-13 11:55:20 +00:00
nekral-guest
ae7aeda621 SHA_CRYPT_MAX_ROUNDS and SHA_CRYPT_MIN_ROUNDS can
only exist if configured with --with-sha-crypt.
2008-05-19 20:59:51 +00:00
nekral-guest
7ce94164c7 * man/login.defs.d/SYS_UID_MAX.xml, man/login.defs.d/SYS_GID_MAX.xml:
Document new variables.
* man/newusers.8.xml, man/login.defs.5.xml,
  man/login.defs.d/GID_MAX.xml, man/login.defs.d/UID_MAX.xml:
  newusers uses now the GID_MAX, GID_MIN, UID_MAX, UID_MIN,
  SYS_GID_MAX, SYS_GID_MIN, SYS_UID_MAX, and SYS_UID_MIN variables.
* man/groupadd.8.xml, man/login.defs.5.xml: groupadd uses now the
  SYS_GID_MAX, and SYS_GID_MIN variables.
* man/login.defs.5.xml: useradd uses now the SYS_GID_MAX,
  SYS_GID_MIN, SYS_UID_MAX, and SYS_UID_MIN variables.
2008-02-25 21:17:18 +00:00
nekral-guest
93e2f66a60 * NEWS, src/useradd.c, man/useradd.8.xml: Added options
-user-group (-U, Uflg) and --no-user-group (-N, Nflg) to replace
  nflg.
* man/login.defs.d/USERGROUPS_ENAB.xml: useradd now also uses
  USERGROUPS_ENAB.
2008-02-25 21:03:46 +00:00
nekral-guest
15989f16f7 * man/pwconv.8.xml: Fix typos.
* man/chpasswd.8.xml, man/chgpasswd.8.xml: Document the NONE crypt
  method.
* man/login.defs.d/MAIL_DIR.xml: Add comment regarding useradd not
  using MAIL_FILE.
* man/login.defs.d/ERASECHAR.xml, man/login.defs.d/KILLCHAR.xml,
  man/login.defs.d/CONSOLE_GROUPS.xml, man/login.defs.d/ENV_HZ.xml,
  man/login.defs.d/ENV_PATH.xml, man/login.defs.d/ENV_SUPATH.xml:
  These variables are also used by some tools when compiled with PAM
  support.
* man/login.defs.d/ENV_HZ.xml: Add note that it is only used by
  sulogin when compiled with PAM support.
* man/login.defs.d/ENV_SUPATH.xml: Typos: ENV_PATH -> ENV_SUPATH,
  and mention sbin in the path.
* man/login.defs.d/LOGIN_STRING.xml: Fix typo: confition ->
  condition.
* man/sg.1.xml: Add CONFIGURATION section (SYSLOG_SG_ENAB).
* man/su.1.xml: ENV_HZ, LOGIN_STRING, MAIL_DIR, USERGROUPS_ENAB
  are only used when su is compiled without PAM support.
* man/login.defs.5.xml: Added variables: OBSCURE_CHECKS_ENAB
  PASS_ALWAYS_WARN PASS_CHANGE_TRIES SULOG_FILE SU_NAME
  SU_WHEEL_ONLY SYSLOG_SG_ENAB SYSLOG_SU_ENAB.
* man/login.defs.5.xml: ENVIRON_FILE is only used when compiled
  without PAM support.
* man/login.defs.5.xml: sulogin uses variables even when compiled
  with PAM support.
* man/login.1.xml: ENV_HZ ENV_PATH ENV_SUPATH MAIL_DIR UMASK are
  only used when login is not compiled with PAM support.
2007-12-09 14:50:14 +00:00
nekral-guest
8c4d98edc1 * man/login.defs.d/CONSOLE_GROUPS.xml,
man/login.defs.d/CONSOLE.xml, man/login.defs.d/DEFAULT_HOME.xml,
  man/login.defs.d/ENV_HZ.xml, man/login.defs.d/ENVIRON_FILE.xml,
  man/login.defs.d/ENV_PATH.xml, man/login.defs.d/ENV_SUPATH.xml,
  man/login.defs.d/ENV_TZ.xml, man/login.defs.d/ERASECHAR.xml,
  man/login.defs.d/FAIL_DELAY.xml,
  man/login.defs.d/FAILLOG_ENAB.xml,
  man/login.defs.d/FAKE_SHELL.xml, man/login.defs.d/FTMP_FILE.xml,
  man/login.defs.d/HUSHLOGIN_FILE.xml,
  man/login.defs.d/ISSUE_FILE.xml, man/login.defs.d/KILLCHAR.xml,
  man/login.defs.d/LASTLOG_ENAB.xml, man/login.defs.d/LOGIN_RETRIES.xml,
  man/login.defs.d/LOGIN_TIMEOUT.xml, man/login.defs.d/LOG_OK_LOGINS.xml,
  man/login.defs.d/LOG_UNKFAIL_ENAB.xml,
  man/login.defs.d/MAIL_CHECK_ENAB.xml, man/login.defs.d/MOTD_FILE.xml,
  man/login.defs.d/NOLOGINS_FILE.xml,
  man/login.defs.d/OBSCURE_CHECKS_ENAB.xml,
  man/login.defs.d/PASS_ALWAYS_WARN.xml,
  man/login.defs.d/PASS_CHANGE_TRIES.xml,
  man/login.defs.d/PASS_MAX_LEN.xml,
  man/login.defs.d/PORTTIME_CHECKS_ENAB.xml,
  man/login.defs.d/QUOTAS_ENAB.xml, man/login.defs.d/SULOG_FILE.xml,
  man/login.defs.d/SU_NAME.xml, man/login.defs.d/SU_WHEEL_ONLY.xml,
  man/login.defs.d/SYSLOG_SG_ENAB.xml,
  man/login.defs.d/SYSLOG_SU_ENAB.xml,
  man/login.defs.d/TTYGROUP.xml, man/login.defs.d/TTYTYPE_FILE.xml,
  man/login.defs.d/ULIMIT.xml, man/login.defs.d/USERGROUPS_ENAB.xml:
  New documentation of login.defs variables.
* man/login.defs.d/MAIL_DIR.xml: Updated. It now contains the
  MAIL_FILE documentation.
* man/login.defs.d/LOGIN_STRING.xml: Updated. Mentions %s.
* man/pwconv.8.xml, man/groupmems.8.xml, man/groupdel.8.xml,
  man/useradd.8.xml, man/pwck.8.xml, man/groupadd.8.xml,
  man/sulogin.8.xml, man/newgrp.1.xml, man/usermod.8.xml,
  man/su.1.xml, man/vipw.8.xml, man/passwd.1.xml,
  man/groupmod.8.xml, man/login.1.xml, man/userdel.8.xml,
  man/grpck.8.xml: Added CONFIGURATION section.
* man/generate_mans.mak: The generations of manpages depends on
  the variables from the Makefiles. Add the dependency on Makefile.
* man/login.defs.5.xml: New login.defs variable documented.
* man/Makefile.am: Added XML variable documentation to the
  distributed files.
2007-12-08 23:24:40 +00:00
nekral-guest
0f7f0ea467 * man/chfn.1.xml: Uses CHFN_AUTH, CHFN_RESTRICT, LOGIN_STRING.
* man/chgpasswd.8.xml: Uses ENCRYPT_METHOD, MAX_MEMBERS_PER_GROUP,
  MD5_CRYPT_ENAB, SHA_CRYPT_MIN_ROUNDS (SHA_CRYPT_MAX_ROUNDS).
* man/chpasswd.8.xml: Switch to using entities for ENCRYPT_METHOD,
  MD5_CRYPT_ENAB, SHA_CRYPT_MIN_ROUNDS (SHA_CRYPT_MAX_ROUNDS).
* man/chsh.1.xml: Uses CHSH_AUTH, LOGIN_STRING.
* man/expiry.1.xml: Does not use any login.defs parameter.
* man/gpasswd.1.xml: Uses ENCRYPT_METHOD, MAX_MEMBERS_PER_GROUP,
  MD5_CRYPT_ENAB, SHA_CRYPT_MIN_ROUNDS.
* man/login.defs.5.xml: Added CHSH_AUTH.
* man/login.defs.5.xml: Cross reference -> cross references.
* man/login.defs.5.xml: chfn only uses CHFN_AUTH when no_pam.
* man/login.defs.5.xml: chsh uses CHSH_AUTH, not CHFN_AUTH.
* man/login.defs.d/CHSH_AUTH.xml: Added.
* man/login.defs.5.xml: chsh uses parameters only when no_pam.
* man/login.defs.5.xml: expiry does not use CONSOLE_GROUPS, even
  if linked in the binary.
* man/newusers.8.xml: Uses ENCRYPT_METHOD, MAX_MEMBERS_PER_GROUP,
  MD5_CRYPT_ENAB, PASS_MAX_DAYS, PASS_MIN_DAYS, PASS_WARN_AGE,
  SHA_CRYPT_MIN_ROUNDS, UMASK.
2007-11-26 23:27:56 +00:00
nekral-guest
b75fe4940b Put each variable description in an external entities. This will permit to
reference them in the various utils manpages.
2007-11-26 22:11:23 +00:00