Before: `users.users.user1.group = "group-not-defined-anywhere-else"`
would result in user1 having the primary group `nogroup`, assigned at
activation time and only with a (easy to miss) warning from the
activation script. This behaviour is a security issue becase no files
should be owned by `nogroup` and it allows for unrelated users (and
services) to accidentally have access to files they shouldn't have.
After: The configuration above results in this eval error:
- The following users have a primary group that is undefined: user1
Hint: Add this to your NixOS config:
users.groups.group-not-defined-anywhere-else = {};
This avoids the possible confusion with `passwordFile` being the file
version of `password`, while it should contain the password hash.
Fixes issue #165858.
Since #246772, cross compiled NixOS is broken because the DateTime perl
package that was used in the update-users-groups.pl script depends on
Testutf8 which does not cross compile (see #198548).
This PR drops the DateTime dependency in favour of TimePiece, which has
less dependencies and whose closure does cross compile.
0d7cd66652 broke validation for hashes with options
such as those generated with `mkpasswd --method=sha-512 --rounds=1000000`:
$6$rounds=1000000$xpzZ6Rfg873gZnDY$RxS7lpVnohfDrrKG3lt9UFHED1KoiPGzH7zQv/HzwalZepo/IfFtxw05ap25duEJSKYhC14.Fn9eXszEpWVtF.
This fixes it.
Updates the warnings message for statefully set up passwords, now that
weak algorithms have been removed from our libxcrypt package.
Additionall we now add proper validation for hashing schemes used in
`hashedPassword`.
Neither will prevent a rebuiild, but instead issue a warning, that this
requires immediate remediation, or else users will be unable to login.
Reuses the crypt scheme ids as provided by the libxcrypt package.
mkAliasOptionModule should not default to mdDoc descriptions because
that can break out-of-tree users of documentation infrastructure. add an
explicitly-MD variant for now, to be removed some time after the MD
transition is complete.
Introduce a `users.users.<name>.expires` option to allows setting an
expiry date to user accounts.
This is useful when members should gain temporary access and you don't
want to have to roll out another system update to disable them.
To allow for a reasonably fast deprecation of weak password hashing
schemes we provide an activation script that checks existing hashes in
/etc/shadow and issues a warning for user accounts that still rely on
deprecated hashes.
Co-Authored-By: oxalica <oxalicc@pm.me>
make (almost) all links appear on only a single line, with no
unnecessary whitespace, using double quotes for attributes. this lets us
automatically convert them to markdown easily.
the few remaining links are extremely long link in a gnome module, we'll
come back to those at a later date.
we can't embed syntactic annotations of this kind in markdown code
blocks without yet another extension. replaceable is rare enough to make
this not much worth it, so we'll go with «thing» instead. the module
system already uses this format for its placeholder names in attrsOf
paths.
markdown can't represent the difference without another extension and
both the html manual and the manpage render them the same, so keeping the
distinction is not very useful on its own. with the distinction removed
we can automatically convert many options that use <code> tags to markdown.
the manpage remains unchanged, html manual does not render
differently (but class names on code tags do change from "code" to "literal").
the conversion procedure is simple:
- find all things that look like options, ie calls to either `mkOption`
or `lib.mkOption` that take an attrset. remember the attrset as the
option
- for all options, find a `description` attribute who's value is not a
call to `mdDoc` or `lib.mdDoc`
- textually convert the entire value of the attribute to MD with a few
simple regexes (the set from mdize-module.sh)
- if the change produced a change in the manual output, discard
- if the change kept the manual unchanged, add some text to the
description to make sure we've actually found an option. if the
manual changes this time, keep the converted description
this procedure converts 80% of nixos options to markdown. around 2000
options remain to be inspected, but most of those fail the "does not
change the manual output check": currently the MD conversion process
does not faithfully convert docbook tags like <code> and <package>, so
any option using such tags will not be converted at all.
More nixpkgs code such as `boot.initrd.systemd.emergencyAccess` defines
options that takes hashed passwords, so move the type definition from
modules/ into lib/.
The type definition itself stays unchanged.
Previously we allocated subuids automatically for all normal users.
Make this explicitly configurable, so that one can use this for system
users too (or explicitly disable for normal users). Also don't allocate
automatically by default if a user already has ranges specified statically.
This change makes it so that accessing config.users.groups.*.members isn't
empty by default, but instead contains all the users whose `extraGroups`
includes that group, allowing fancy things like
{ config, ... }: {
users.groups.libvirt.members = config.users.groups.wheel.members;
}
to add all users in the wheel group to the libvirt group
Things will get quite broken if an /etc/passwd entry contains a
colon (which terminates a field), or a newline (which terminates a
record). I know because I just accidentally made a user whose home
directory path contained a newline!
So let's make sure that can't happen.
As the only consequence of isSystemUser is that if the uid is null then
it's allocated below 500, if a user has uid = something below 500 then
we don't require isSystemUser to be set.
Motivation: https://github.com/NixOS/nixpkgs/issues/112647
