the-bastion/bin/helper/osh-accountModifyPersonalAccess
Stéphane Lesimple cf405badfb feat: add 2 configurable knobs to (self|account)AddPersonalAccess
widest_v4_prefix (maximum allowed prefix to add in a single ACL),
and self_remote_user_only (only allow ACLs where the remote user
is the same than the bastion account name)
2023-06-01 11:52:39 +02:00

145 lines
5 KiB
Perl
Executable file

#! /usr/bin/perl -T
# vim: set filetype=perl ts=4 sw=4 sts=4 et:
# NEEDGROUP osh-selfAddPersonalAccess
# SUDOERS %osh-selfAddPersonalAccess ALL=(allowkeeper) NOPASSWD:/usr/bin/env perl -T /opt/bastion/bin/helper/osh-accountModifyPersonalAccess --target self --action add *
# FILEMODE 0750
# FILEOWN 0 allowkeeper
#
# NEEDGROUP osh-accountAddPersonalAccess
# SUDOERS %osh-accountAddPersonalAccess ALL=(allowkeeper) NOPASSWD:/usr/bin/env perl -T /opt/bastion/bin/helper/osh-accountModifyPersonalAccess --target any --action add *
# FILEMODE 0750
# FILEOWN 0 allowkeeper
#
# NEEDGROUP osh-selfDelPersonalAccess
# SUDOERS %osh-selfDelPersonalAccess ALL=(allowkeeper) NOPASSWD:/usr/bin/env perl -T /opt/bastion/bin/helper/osh-accountModifyPersonalAccess --target self --action del *
# FILEMODE 0750
# FILEOWN 0 allowkeeper
#
# NEEDGROUP osh-accountDelPersonalAccess
# SUDOERS %osh-accountDelPersonalAccess ALL=(allowkeeper) NOPASSWD:/usr/bin/env perl -T /opt/bastion/bin/helper/osh-accountModifyPersonalAccess --target any --action del *
# FILEMODE 0750
# FILEOWN 0 allowkeeper
#>HEADER
use common::sense;
use Getopt::Long qw(:config no_auto_abbrev no_ignore_case);
use File::Basename;
use lib dirname(__FILE__) . '/../../lib/perl';
use OVH::Bastion;
use OVH::Bastion::Helper;
# Fetch command options
my $fnret;
my ($result, @optwarns);
my ($account, $ip, $user, $port, $action, $ttl, $forceKey, $forcePassword, $target, $comment);
eval {
local $SIG{__WARN__} = sub { push @optwarns, shift };
$result = GetOptions(
"account=s" => sub { $account //= $_[1] },
"ip=s" => sub { $ip //= $_[1] },
"user=s" => sub { $user //= $_[1] },
"port=i" => sub { $port //= $_[1] },
"action=s" => sub { $action //= $_[1] },
"ttl=i" => sub { $ttl //= $_[1] },
"force-key=s" => sub { $forceKey //= $_[1] },
"force-password=s" => sub { $forcePassword //= $_[1] },
"target=s" => sub { $target //= $_[1] },
"comment=s" => sub { $comment //= $_[1] },
);
};
if ($@) { die $@ }
OVH::Bastion::Helper::check_spurious_args();
if (!$result) {
local $" = ", ";
HEXIT('ERR_BAD_OPTIONS', msg => "Error parsing options: @optwarns");
}
if (not $action or not $ip or not $account or not $target) {
HEXIT('ERR_MISSING_PARAMETER', msg => "Missing argument 'action' or 'ip' or 'account' or 'target'");
}
#<HEADER
not defined $account and $account = $self;
#>RIGHTSCHECK
if ($target eq 'self' && $self ne $account) {
HEXIT('ERR_SECURITY_VIOLATION',
msg => "Attempted to modify another account while you're only allowed to do it on yourself");
}
#<RIGHTSCHECK
#>PARAMS:ACTION
if (not grep { $action eq $_ } qw{ add del }) {
return R('ERR_INVALID_PARAMETER', msg => "expected 'add' or 'del' as an action");
}
#<PARAMS:ACTION
#>CODE
my $machine = $ip;
$port and $machine .= ":$port";
$user and $machine = $user . '@' . $machine;
my $plugin = ($target eq 'self' ? 'self' : 'account') . 'AddPersonalAccess';
# check plugin config for (self|account)AddPersonalAccess
my $widestV4Prefix;
if ($action eq 'add') {
$fnret = OVH::Bastion::plugin_config(plugin => $plugin);
$fnret or HEXIT($fnret);
if ($fnret->value && $fnret->value->{'self_remote_user_only'}) {
if (!$user || $user ne $account) {
HEXIT('ERR_INVALID_PARAMETER',
msg => "This bastion policy forces the remote user of personal accesses to match\n"
. "the account name: you may retry with --user $account");
}
}
$widestV4Prefix = $fnret->value->{'widest_v4_prefix'};
}
# access_modify validates all its parameters, don't do it ourselves here for clarity
$fnret = OVH::Bastion::access_modify(
way => 'personal',
account => $account,
action => $action,
user => $user,
ip => $ip,
port => $port,
ttl => $ttl,
forceKey => $forceKey,
forcePassword => $forcePassword,
comment => $comment,
widestV4Prefix => $widestV4Prefix,
);
if ($fnret->err eq 'OK') {
my $ttlmsg = $ttl ? ' (expires in ' . OVH::Bastion::duration2human(seconds => $ttl)->value->{'human'} . ')' : '';
HEXIT(
'OK',
value => {
action => $action,
account => $account,
ip => $ip,
user => $user,
port => $port,
ttl => $ttl,
comment => $comment
},
msg => $action eq 'add'
? "Access to $machine was added to account $account$ttlmsg"
: "Access to $machine was removed from account $account$ttlmsg"
);
}
elsif ($fnret->err eq 'OK_NO_CHANGE') {
HEXIT('OK_NO_CHANGE',
msg => $action eq 'add'
? "Access to $machine was already granted to account $account, nothing done"
: "Access to $machine was not granted to account $account, nothing done");
}
HEXIT($fnret);