1 package FS::Password_Mixin;
3 use FS::Record qw(qsearch);
5 use FS::password_history;
6 use Authen::Passphrase;
7 use Authen::Passphrase::BlowfishCrypt;
8 # https://rt.cpan.org/Ticket/Display.html?id=72743
9 use Data::Password qw(:all);
13 FS::UID->install_callback( sub {
14 $conf = FS::Conf->new;
16 #eval "use Authen::Passphrase::BlowfishCrypt;";
19 our $me = '[' . __PACKAGE__ . ']';
21 our $BLOWFISH_COST = 10;
25 FS::Password_Mixin - Object methods for accounts that have passwords governed
26 by the password policy.
32 =item is_password_allowed PASSWORD
34 Checks the password against the system password policy. Returns an error
35 message on failure, an empty string on success.
37 This MUST NOT be called from check(). It should be called by the office UI,
38 self-service ClientAPI, or other I<user-interactive> code that processes a
39 password change, and only if the user has taken some action with the intent
40 of changing the password.
44 sub is_password_allowed {
48 # basic checks using Data::Password;
49 # options for Data::Password
50 $DICTIONARY = 4; # minimum length of disallowed words
51 $MINLEN = $conf->config('passwordmin') || 6;
52 $MAXLEN = $conf->config('passwordmax') || 8;
53 $GROUPS = 4; # must have all 4 'character groups': numbers, symbols, uppercase, lowercase
54 # other options use the defaults listed below:
55 # $FOLLOWING = 3; # disallows more than 3 chars in a row, by alphabet or keyboard (ie abcd or asdf)
56 # $SKIPCHAR = undef; # set to true to skip checking for bad characters
57 # # lists of disallowed words
58 # @DICTIONARIES = qw( /usr/share/dict/web2 /usr/share/dict/words /usr/share/dict/linux.words );
60 my $error = IsBadPassword($password);
61 $error = 'must contain at least one each of numbers, symbols, and lowercase and uppercase letters'
62 if $error eq 'contains less than 4 character groups'; # avoid confusion
63 $error = 'Invalid password - ' . $error if $error;
64 return $error if $error;
66 #check against known usernames
67 my @disallowed_names = $self->password_disallowed_names;
68 foreach my $noname (@disallowed_names) {
69 if ($password =~ /$noname/i) {
70 #keeping message ambiguous to avoid leaking personal info
71 return 'Password contains a disallowed word';
75 return '' unless $self->get($self->primary_key); # for validating new passwords pre-insert
77 if ( $conf->config('password-no_reuse') =~ /^(\d+)$/ ) {
81 # "the last N" passwords includes the current password and the N-1
82 # passwords before that.
83 warn "$me checking password reuse limit of $no_reuse\n" if $DEBUG;
84 my @latest = qsearch({
85 'table' => 'password_history',
86 'hashref' => { $self->password_history_key => $self->get($self->primary_key) },
87 'order_by' => " ORDER BY created DESC LIMIT $no_reuse",
90 # don't check the first one; reusing the current password is allowed.
93 foreach my $history (@latest) {
94 warn "$me previous password created ".$history->created."\n" if $DEBUG;
95 if ( $history->password_equals($password) ) {
97 if ( $no_reuse == 1 ) {
98 $message = "This password is the same as your previous password.";
100 $message = "This password was one of the last $no_reuse passwords on this account.";
106 } # end of no_reuse checking
111 =item password_disallowed_names
113 Override to return a list additional words (eg usernames) not
114 to be used by passwords on this service.
118 sub password_disallowed_names {
122 =item password_history_key
124 Returns the name of the field in L<FS::password_history> that's the foreign
129 sub password_history_key {
131 $self->table . '__' . $self->primary_key;
134 =item insert_password_history
136 Creates a L<FS::password_history> record linked to this object, with its
141 sub insert_password_history {
143 my $encoding = $self->_password_encoding;
144 my $password = $self->_password;
147 if ( $encoding eq 'bcrypt' ) {
148 # our format, used for contact and access_user passwords
149 my ($cost, $salt, $hash) = split(',', $password);
150 $auth = Authen::Passphrase::BlowfishCrypt->new(
152 salt_base64 => $salt,
153 hash_base64 => $hash,
156 } elsif ( $encoding eq 'crypt' ) {
158 # it's smart enough to figure this out
159 $auth = Authen::Passphrase->from_crypt($password);
161 } elsif ( $encoding eq 'ldap' ) {
163 $password =~ s/^{PLAIN}/{CLEARTEXT}/i; # normalize
164 $auth = Authen::Passphrase->from_rfc2307($password);
165 if ( $auth->isa('Authen::Passphrase::Clear') ) {
166 # then we've been given the password in cleartext
167 $auth = $self->_blowfishcrypt( $auth->passphrase );
171 warn "unrecognized password encoding '$encoding'; treating as plain text"
172 unless $encoding eq 'plain';
174 $auth = $self->_blowfishcrypt( $password );
178 my $password_history = FS::password_history->new({
179 _password => $auth->as_rfc2307,
181 $self->password_history_key => $self->get($self->primary_key),
184 my $error = $password_history->insert;
185 return "recording password history: $error" if $error;
190 =item _blowfishcrypt PASSWORD
192 For internal use: takes PASSWORD and returns a new
193 L<Authen::Passphrase::BlowfishCrypt> object representing it.
199 my $passphrase = shift;
200 return Authen::Passphrase::BlowfishCrypt->new(
201 cost => $BLOWFISH_COST,
203 passphrase => $passphrase,
211 L<FS::password_history>