mirror of
https://github.com/ovh/the-bastion.git
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124 lines
3.9 KiB
Perl
Executable file
124 lines
3.9 KiB
Perl
Executable file
#! /usr/bin/perl -T
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# vim: set filetype=perl ts=4 sw=4 sts=4 et:
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# KEYSUDOERS # as an owner, we can generate an egress key for the group
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# KEYSUDOERS SUPEROWNERS, %%GROUP%-owner ALL=(root) NOPASSWD: /usr/bin/env perl -T %BASEPATH%/bin/helper/osh-groupGenerateEgressKey --group %GROUP% *
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# FILEMODE 0755
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# FILEOWN 0 0
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#>HEADER
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use common::sense;
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use Getopt::Long;
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use File::Basename;
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use lib dirname(__FILE__) . '/../../lib/perl';
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use OVH::Result;
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use OVH::Bastion;
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use OVH::Bastion::Plugin::generateEgressKey;
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use OVH::Bastion::Helper;
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# Fetch command options
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my ($result, @optwarns);
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my ($group, $algo, $size, $encrypted);
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eval {
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local $SIG{__WARN__} = sub { push @optwarns, shift };
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$result = GetOptions(
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"group=s" => sub { $group //= $_[1] }, # ignore subsequent --group on cmdline (anti-sudoers-override)
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"algo=s" => sub { $algo //= $_[1] },
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"size=i" => sub { $size //= $_[1] },
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"encrypted" => sub { $encrypted //= $_[1] },
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);
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};
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if ($@) { die $@ }
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if (!$result) {
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local $" = ", ";
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HEXIT('ERR_BAD_OPTIONS', msg => "Error parsing options: @optwarns");
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}
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if (!$size || !$algo || !$group) {
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HEXIT('ERR_MISSING_PARAMETER', msg => "Missing argument 'size', 'algo' or 'group'");
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}
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#<HEADER
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my $fnret;
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$fnret = OVH::Bastion::is_valid_group_and_existing(group => $group, groupType => "key");
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$fnret or HEXIT($fnret);
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$fnret = OVH::Bastion::Plugin::generateEgressKey::preconditions(
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context => 'group',
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self => $self,
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group => $group,
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algo => $algo,
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size => $size,
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sudo => 1,
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);
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$fnret or HEXIT($fnret);
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# get returned untainted values
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my ($shortGroup, $keyhome);
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($group, $algo, $size, $shortGroup, $keyhome) = @{$fnret->value}{qw{ group algo size shortGroup keyhome}};
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my $passphrase = '';
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if ($encrypted) {
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# read the passphrase from stdin
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$passphrase = <STDIN>;
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# we need to untaint it, as it's going to be passed as an arg to the array version of system(),
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# it can contain anything, really, there is no shell escape possible (see generate_ssh_key in ssh.inc)
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($passphrase) = $passphrase =~ /^(.+)$/;
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}
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my $keykeeper_uid = (getpwnam('keykeeper'))[2];
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my $group_gid = (getgrnam($group))[2];
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if (!$keykeeper_uid || !$group_gid) {
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warn_syslog("Couldn't get the uid of keykeeper ($keykeeper_uid) or gid of $group ($group_gid) while $self is attempting to generate a new key with algo $algo and size $size");
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HEXIT('ERR_INTERNAL', msg => "Couldn't fetch the required account or group IDs");
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}
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osh_info "Generating a new key pair, this might take a while...";
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$fnret = OVH::Bastion::generate_ssh_key(
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folder => $keyhome,
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prefix => $shortGroup,
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algo => $algo,
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size => $size,
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passphrase => $passphrase,
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uid => $keykeeper_uid,
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gid => $group_gid,
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group_readable => 1,
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);
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$fnret or HEXIT($fnret);
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my $filepath = $fnret->value->{'file'};
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my $mtime = (stat($filepath))[9];
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osh_info "The new key pair has been generated:\n";
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$fnret = OVH::Bastion::get_ssh_pub_key_info(file => $filepath . ".pub", way => "egress");
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$fnret or HEXIT($fnret);
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my $key = $fnret->value;
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OVH::Bastion::syslogFormatted(
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severity => 'info',
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type => 'group',
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fields => [
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[action => 'generate_egress_key'],
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[group => $shortGroup],
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[self => $self],
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[key_id => $key->{'id'}],
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[key_algo => $key->{'typecode'}],
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[key_algo_family => $key->{'family'}],
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[key_size => $key->{'size'}],
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[key_fingerprint => $key->{'fingerprint'}],
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[key_comment => $key->{'comment'}],
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[key_mtime => $mtime],
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[key_path => $filepath],
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[key_base64 => $key->{'base64'}],
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[key_encrypted => $encrypted ? "yes" : "no"],
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]
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);
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HEXIT('OK', value => $key);
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