diff options
Diffstat (limited to 'perl/Wallet')
| -rw-r--r-- | perl/Wallet/Policy/Stanford.pm | 94 |
1 files changed, 66 insertions, 28 deletions
diff --git a/perl/Wallet/Policy/Stanford.pm b/perl/Wallet/Policy/Stanford.pm index 840f5f3..39bea33 100644 --- a/perl/Wallet/Policy/Stanford.pm +++ b/perl/Wallet/Policy/Stanford.pm @@ -42,7 +42,7 @@ our $DOMAIN = 'stanford.edu'; # Groups for file object naming, each mapped to the ACL to use for # non-host-based objects owned by that group. This default is entirely # Stanford-specific, even more so than the rest of this file. -our %GROUPS = ( +our %ACL_FOR_GROUP = ( 'its-apps' => 'group/sharedapps', 'its-crc-sg' => 'group/crcsg', 'its-idg' => 'group/its-idg', @@ -56,7 +56,7 @@ our @GROUPS_LEGACY = qw(apps crcsg gsb idg sysadmin sulair vast); # File object types. Each type can have one or more parameters: whether it is # host-based (host), whether it takes a qualifier after the host or service # (extra), and whether that qualifier is mandatory (need_extra). -our %FILE_TYPES = ( +our %FILE_TYPE = ( config => { extra => 1, need_extra => 1 }, db => { extra => 1, need_extra => 1 }, 'gpg-key' => { }, @@ -96,6 +96,21 @@ our $ROOT_REQUIRED = '/etc/remctl/acl/its-idg'; # Implementation ############################################################################## +# Retrieve an existing ACL and return its members as a list. +# +# $name - Name of the ACL to retrieve +# +# Returns: Members of the ACL as a list of pairs +# The empty list on any failure to retrieve the ACL +sub _acl_members { + my ($name) = @_; + my $schema = eval { Wallet::Schema->connect }; + return if (!$schema || $@); + my $acl = eval { Wallet::ACL->new ($name, $schema) }; + return if (!$acl || $@); + return $acl->list; +} + # Retrieve an existing ACL and check whether it contains a netdb-root member. # This is used to check if a default ACL is already present with a netdb-root # member so that we can return a default owner that matches. We only ever @@ -105,11 +120,7 @@ our $ROOT_REQUIRED = '/etc/remctl/acl/its-idg'; # On any failure, just return an empty ACL to use the default. sub _acl_has_netdb_root { my ($name) = @_; - my $schema = eval { Wallet::Schema->connect }; - return unless ($schema and not $@); - my $acl = eval { Wallet::ACL->new ($name, $schema) }; - return unless ($acl and not $@); - for my $line ($acl->list) { + for my $line (_acl_members($name)) { return 1 if $line->[0] eq 'netdb-root'; } return; @@ -144,7 +155,7 @@ sub _host_for_file { # Parse the name and check whether this is a host-based object. my ($type, $host) = split('/', $name); - return if !$FILE_TYPES{$type}{host}; + return if !$FILE_TYPE{$type}{host}; return $host; } @@ -168,23 +179,50 @@ sub _host_for_keytab { # using root instances by default. sub default_owner { my ($type, $name) = @_; + + # How to determine the host for host-based objects. my %host_for = ( keytab => \&_host_for_keytab, file => \&_host_for_file, ); - return unless defined $host_for{$type}; - my $host = $host_for{$type}->($name); - return unless $host; - my $acl_name = "host/$host"; - my @acl; - if ($ENV{REMOTE_USER} =~ m,/root, or _acl_has_netdb_root ($acl_name)) { - @acl = ([ 'netdb-root', $host ], - [ 'krb5', "host/$host\@$REALM" ]); - } else { - @acl = ([ 'netdb', $host ], - [ 'krb5', "host/$host\@$REALM" ]); + + # If we have a possible host mapping, see if we can use that. + if (defined($host_for{$type})) { + my $host = $host_for{$type}->($name); + if ($host) { + my $acl_name = "host/$host"; + my @acl; + if ($ENV{REMOTE_USER} =~ m,/root, + || _acl_has_netdb_root ($acl_name)) { + @acl = ([ 'netdb-root', $host ], + [ 'krb5', "host/$host\@$REALM" ]); + } else { + @acl = ([ 'netdb', $host ], + [ 'krb5', "host/$host\@$REALM" ]); + } + return ($acl_name, @acl); + } } - return ($acl_name, @acl); + + # We have no open if this is not a file object. + return if $type ne 'file'; + + # Parse the name of the file object only far enough to get type and group + # (if there is a group). + my ($file_type, $group) = split('/', $name); + + # Host-based file objects should be caught by the above. We certainly + # can't do anything about them here. + return if $FILE_TYPE{$file_type}{host}; + + # If we have a mapping for this group, retrieve the ACL contents. We + # would like to just return the ACL name, but wallet currently requires we + # return the whole ACL. + my $acl = $ACL_FOR_GROUP{$group}; + return if !defined($acl); + my @members = _acl_members($acl); + return if @members == 0; + return ($acl, @members); } # Enforce a naming policy. Host-based keytabs must have fully-qualified @@ -261,15 +299,15 @@ sub verify_name { # All objects start with the type. First check if this is a # host-based type. my $type = shift @name; - if ($FILE_TYPES{$type} && $FILE_TYPES{$type}{host}) { + if ($FILE_TYPE{$type} && $FILE_TYPE{$type}{host}) { my ($host, $extra) = @name; if ($host !~ m{ [.] }xms) { return "host name $host is not fully qualified"; } - if (defined($extra) && !$FILE_TYPES{$type}{extra}) { + if (defined($extra) && !$FILE_TYPE{$type}{extra}) { return "extraneous component at end of $name"; } - if (!defined($extra) && $FILE_TYPES{$type}{need_extra}) { + if (!defined($extra) && $FILE_TYPE{$type}{need_extra}) { return "missing component in $name"; } return; @@ -283,23 +321,23 @@ sub verify_name { my ($group, $service, $extra) = @name; # Check the group. - if (!$GROUPS{$group}) { + if (!$ACL_FOR_GROUP{$group}) { return "unknown group $group"; } # Check the type. Be sure it's not host-based. - if (!$FILE_TYPES{$type}) { + if (!$FILE_TYPE{$type}) { return "unknown type $type"; } - if ($FILE_TYPES{$type}{host}) { + if ($FILE_TYPE{$type}{host}) { return "bad name for host-based file type $type"; } # Check the extra data. - if (defined($extra) && !$FILE_TYPES{$type}{extra}) { + if (defined($extra) && !$FILE_TYPE{$type}{extra}) { return "extraneous component at end of $name"; } - if (!defined($extra) && $FILE_TYPES{$type}{need_extra}) { + if (!defined($extra) && $FILE_TYPE{$type}{need_extra}) { return "missing component in $name"; } return; |