diff options
Diffstat (limited to 'perl/lib/Wallet/ACL.pm')
| -rw-r--r-- | perl/lib/Wallet/ACL.pm | 126 |
1 files changed, 100 insertions, 26 deletions
diff --git a/perl/lib/Wallet/ACL.pm b/perl/lib/Wallet/ACL.pm index a3b0146..ad0eb2c 100644 --- a/perl/lib/Wallet/ACL.pm +++ b/perl/lib/Wallet/ACL.pm @@ -1,7 +1,8 @@ -# Wallet::ACL -- Implementation of ACLs in the wallet system. +# Wallet::ACL -- Implementation of ACLs in the wallet system # # Written by Russ Allbery <eagle@eyrie.org> -# Copyright 2007, 2008, 2010, 2013, 2014 +# Copyright 2016 Russ Allbery <eagle@eyrie.org> +# Copyright 2007, 2008, 2010, 2013, 2014, 2015 # The Board of Trustees of the Leland Stanford Junior University # # See LICENSE for licensing terms. @@ -11,19 +12,15 @@ ############################################################################## package Wallet::ACL; -require 5.006; +use 5.008; use strict; use warnings; -use vars qw($VERSION); use DateTime; -use DBI; +use Wallet::Object::Base; -# This version should be increased on any code change to this module. Always -# use two digits for the minor version with a leading zero if necessary so -# that it will sort properly. -$VERSION = '0.08'; +our $VERSION = '1.03'; ############################################################################## # Constructors @@ -197,16 +194,55 @@ sub rename { $acls->ac_name ($name); $acls->update; $self->log_acl ('rename', undef, undef, $user, $host, $time); + + # Find any references to this being used as a nested verifier and + # update the name. This really breaks out of the normal flow, but + # it's hard to do otherwise. + %search = (ae_scheme => 'nested', + ae_identifier => $self->{name}, + ); + my @entries = $self->{schema}->resultset('AclEntry')->search(\%search); + for my $entry (@entries) { + $entry->ae_identifier ($name); + $entry->update; + } + $guard->commit; }; if ($@) { - $self->error ("cannot rename ACL $self->{id} to $name: $@"); + $self->error ("cannot rename ACL $self->{name} to $name: $@"); return; } $self->{name} = $name; return 1; } +# Moves everything owned by one ACL to instead be owned by another. You'll +# normally want to use rename, but this exists for cases where the replacing +# ACL already exists and has things assigned to it. Returns true on success, +# false on failure. +sub replace { + my ($self, $replace_id, $user, $host, $time) = @_; + $time ||= time; + + my %search = (ob_owner => $self->{id}); + my @objects = $self->{schema}->resultset('Object')->search (\%search); + if (@objects) { + for my $object (@objects) { + my $type = $object->ob_type; + my $name = $object->ob_name; + my $object = eval { + Wallet::Object::Base->new($type, $name, $self->{schema}); + }; + $object->owner ($replace_id, $user, $host, $time); + } + } else { + $self->error ("no objects found for ACL $self->{name}"); + return; + } + return 1; +} + # Destroy the ACL, deleting it out of the database. Returns true on success, # false on failure. # @@ -233,8 +269,20 @@ sub destroy { die "ACL in use by ".$entry->ob_type.":".$entry->ob_name; } + # Also make certain the ACL isn't being nested in another. + my %search = (ae_scheme => 'nested', + ae_identifier => $self->{name}); + my %options = (join => 'acls', + prefetch => 'acls'); + @entries = $self->{schema}->resultset('AclEntry')->search(\%search, + \%options); + if (@entries) { + my ($entry) = @entries; + die "ACL is nested in ACL ".$entry->acls->ac_name; + } + # Delete any entries (there may or may not be any). - my %search = (ae_id => $self->{id}); + %search = (ae_id => $self->{id}); @entries = $self->{schema}->resultset('AclEntry')->search(\%search); for my $entry (@entries) { $entry->delete; @@ -257,7 +305,7 @@ sub destroy { $guard->commit; }; if ($@) { - $self->error ("cannot destroy ACL $self->{id}: $@"); + $self->error ("cannot destroy ACL $self->{name}: $@"); return; } return 1; @@ -275,6 +323,22 @@ sub add { $self->error ("unknown ACL scheme $scheme"); return; } + + # Check to make sure that this entry has a valid name for the scheme. + my $class = $self->scheme_mapping ($scheme); + my $object = eval { + $class->new ($identifier, $self->{schema}); + }; + if ($@) { + $self->error ("cannot create ACL verifier: $@"); + return; + } + unless ($object && $object->syntax_check ($identifier)) { + $self->error ("invalid ACL identifier $identifier for $scheme"); + return; + }; + + # Actually create the scheme. eval { my $guard = $self->{schema}->txn_scope_guard; my %record = (ae_id => $self->{id}, @@ -285,7 +349,7 @@ sub add { $guard->commit; }; if ($@) { - $self->error ("cannot add $scheme:$identifier to $self->{id}: $@"); + $self->error ("cannot add $scheme:$identifier to $self->{name}: $@"); return; } return 1; @@ -312,7 +376,7 @@ sub remove { }; if ($@) { my $entry = "$scheme:$identifier"; - $self->error ("cannot remove $entry from $self->{id}: $@"); + $self->error ("cannot remove $entry from $self->{name}: $@"); return; } return 1; @@ -340,7 +404,7 @@ sub list { $guard->commit; }; if ($@) { - $self->error ("cannot retrieve ACL $self->{id}: $@"); + $self->error ("cannot retrieve ACL $self->{name}: $@"); return; } else { return @entries; @@ -395,7 +459,7 @@ sub history { $guard->commit; }; if ($@) { - $self->error ("cannot read history for $self->{id}: $@"); + $self->error ("cannot read history for $self->{name}: $@"); return; } return $output; @@ -412,20 +476,21 @@ sub history { { my %verifier; sub check_line { - my ($self, $principal, $scheme, $identifier) = @_; + my ($self, $principal, $scheme, $identifier, $type, $name) = @_; unless ($verifier{$scheme}) { my $class = $self->scheme_mapping ($scheme); unless ($class) { push (@{ $self->{check_errors} }, "unknown scheme $scheme"); return; } - $verifier{$scheme} = $class->new; + $verifier{$scheme} = $class->new ($identifier, $self->{schema}); unless (defined $verifier{$scheme}) { push (@{ $self->{check_errors} }, "cannot verify $scheme"); return; } } - my $result = ($verifier{$scheme})->check ($principal, $identifier); + my $result = ($verifier{$scheme})->check ($principal, $identifier, + $type, $name); if (not defined $result) { push (@{ $self->{check_errors} }, ($verifier{$scheme})->error); return; @@ -435,13 +500,13 @@ sub history { } } -# Given a principal, check whether it should be granted access according to -# this ACL. Returns 1 if access was granted, 0 if access was denied, and -# undef on some error. Errors from ACL verifiers do not cause an error -# return, but are instead accumulated in the check_errors variable returned by -# the check_errors() method. +# Given a principal, object type, and object name, check whether that +# principal should be granted access according to this ACL. Returns 1 if +# access was granted, 0 if access was denied, and undef on some error. Errors +# from ACL verifiers do not cause an error return, but are instead accumulated +# in the check_errors variable returned by the check_errors() method. sub check { - my ($self, $principal) = @_; + my ($self, $principal, $type, $name) = @_; unless ($principal) { $self->error ('no principal specified'); return; @@ -452,7 +517,8 @@ sub check { $self->{check_errors} = []; for my $entry (@entries) { my ($scheme, $identifier) = @$entry; - my $result = $self->check_line ($principal, $scheme, $identifier); + my $result = $self->check_line ($principal, $scheme, $identifier, + $type, $name); return 1 if $result; } return 0; @@ -643,6 +709,14 @@ On failure, the caller should call error() to get the error message. Note that rename() operations are not logged in the ACL history. +=item replace(ID) + +Replace this ACL with another. This goes through each object owned by +the ACL and changes its ownership to the new ACL, leaving this ACL owning +nothing (and probably then needing to be deleted). Returns true on +success and false on failure. On failure, the caller should call error() +to get the error message. + =item show() Returns a human-readable description of this ACL, including its |