Defined Type: postgresql::server::grant
- Defined in:
- manifests/server/grant.pp
Overview
Define for granting permissions to roles. See README.md for more details.
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# File 'manifests/server/grant.pp', line 2
define postgresql::server::grant (
$role,
$db,
$privilege = undef,
$object_type = 'database',
$object_name = undef,
$psql_db = $postgresql::server::default_database,
$psql_user = $postgresql::server::user,
$port = $postgresql::server::port,
$onlyif_exists = false,
$connect_settings = $postgresql::server::default_connect_settings,
) {
$group = $postgresql::server::group
$psql_path = $postgresql::server::psql_path
if ! $object_name {
$_object_name = $db
} else {
$_object_name = $object_name
}
validate_bool($onlyif_exists)
#
# Port, order of precedence: $port parameter, $connect_settings[PGPORT], $postgresql::server::port
#
if $port != undef {
$port_override = $port
} elsif $connect_settings != undef and has_key( $connect_settings, 'PGPORT') {
$port_override = undef
} else {
$port_override = $postgresql::server::port
}
## Munge the input values
$_object_type = upcase($object_type)
$_privilege = upcase($privilege)
## Validate that the object type is known
validate_string($_object_type,
#'COLUMN',
'DATABASE',
#'FOREIGN SERVER',
#'FOREIGN DATA WRAPPER',
#'FUNCTION',
#'PROCEDURAL LANGUAGE',
'SCHEMA',
'SEQUENCE',
'ALL SEQUENCES IN SCHEMA',
'TABLE',
'ALL TABLES IN SCHEMA',
#'TABLESPACE',
#'VIEW',
)
# You can use ALL TABLES IN SCHEMA by passing schema_name to object_name
# You can use ALL SEQUENCES IN SCHEMA by passing schema_name to object_name
## Validate that the object type's privilege is acceptable
# TODO: this is a terrible hack; if they pass "ALL" as the desired privilege,
# we need a way to test for it--and has_database_privilege does not
# recognize 'ALL' as a valid privilege name. So we probably need to
# hard-code a mapping between 'ALL' and the list of actual privileges that
# it entails, and loop over them to check them. That sort of thing will
# probably need to wait until we port this over to ruby, so, for now, we're
# just going to assume that if they have "CREATE" privileges on a database,
# then they have "ALL". (I told you that it was terrible!)
case $_object_type {
'DATABASE': {
$unless_privilege = $_privilege ? {
'ALL' => 'CREATE',
'ALL PRIVILEGES' => 'CREATE',
default => $_privilege,
}
validate_string($unless_privilege,'CREATE','CONNECT','TEMPORARY','TEMP',
'ALL','ALL PRIVILEGES')
$unless_function = 'has_database_privilege'
$on_db = $psql_db
$onlyif_function = undef
}
'SCHEMA': {
$unless_privilege = $_privilege ? {
'ALL' => 'CREATE',
'ALL PRIVILEGES' => 'CREATE',
default => $_privilege,
}
validate_string($_privilege, 'CREATE', 'USAGE', 'ALL', 'ALL PRIVILEGES')
$unless_function = 'has_schema_privilege'
$on_db = $db
$onlyif_function = undef
}
'SEQUENCE': {
$unless_privilege = $_privilege ? {
'ALL' => 'USAGE',
default => $_privilege,
}
validate_string($unless_privilege,'USAGE','ALL','ALL PRIVILEGES')
$unless_function = 'has_sequence_privilege'
$on_db = $db
$onlyif_function = undef
}
'ALL SEQUENCES IN SCHEMA': {
validate_string($_privilege,'USAGE','ALL','ALL PRIVILEGES')
$unless_function = 'custom'
$on_db = $db
$onlyif_function = undef
$schema = $object_name
$custom_privilege = $_privilege ? {
'ALL' => 'USAGE',
'ALL PRIVILEGES' => 'USAGE',
default => $_privilege,
}
# This checks if there is a difference between the sequences in the
# specified schema and the sequences for which the role has the specified
# privilege. It uses the EXCEPT clause which computes the set of rows
# that are in the result of the first SELECT statement but not in the
# result of the second one. It then counts the number of rows from this
# operation. If this number is zero then the role has the specified
# privilege for all sequences in the schema and the whole query returns a
# single row, which satisfies the `unless` parameter of Postgresql_psql.
# If this number is not zero then there is at least one sequence for which
# the role does not have the specified privilege, making it necessary to
# execute the GRANT statement.
$custom_unless = "SELECT 1 FROM (
SELECT sequence_name
FROM information_schema.sequences
WHERE sequence_schema='${schema}'
EXCEPT DISTINCT
SELECT object_name as sequence_name
FROM information_schema.role_usage_grants
WHERE object_type='SEQUENCE'
AND grantee='${role}'
AND object_schema='${schema}'
AND privilege_type='${custom_privilege}'
) P
HAVING count(P.sequence_name) = 0"
}
'TABLE': {
$unless_privilege = $_privilege ? {
'ALL' => 'INSERT',
default => $_privilege,
}
validate_string($unless_privilege,'SELECT','INSERT','UPDATE','DELETE',
'TRUNCATE','REFERENCES','TRIGGER','ALL','ALL PRIVILEGES')
$unless_function = 'has_table_privilege'
$on_db = $db
$onlyif_function = $onlyif_exists ? {
true => 'table_exists',
default => undef,
}
}
'ALL TABLES IN SCHEMA': {
validate_string($_privilege,'SELECT','INSERT','UPDATE','DELETE',
'TRUNCATE','REFERENCES','TRIGGER','ALL','ALL PRIVILEGES')
$unless_function = 'custom'
$on_db = $db
$onlyif_function = undef
$schema = $object_name
# Again there seems to be no easy way in plain SQL to check if ALL
# PRIVILEGES are granted on a table. By convention we use INSERT
# here to represent ALL PRIVILEGES (truly terrible).
$custom_privilege = $_privilege ? {
'ALL' => 'INSERT',
'ALL PRIVILEGES' => 'INSERT',
default => $_privilege,
}
# This checks if there is a difference between the tables in the
# specified schema and the tables for which the role has the specified
# privilege. It uses the EXCEPT clause which computes the set of rows
# that are in the result of the first SELECT statement but not in the
# result of the second one. It then counts the number of rows from this
# operation. If this number is zero then the role has the specified
# privilege for all tables in the schema and the whole query returns a
# single row, which satisfies the `unless` parameter of Postgresql_psql.
# If this number is not zero then there is at least one table for which
# the role does not have the specified privilege, making it necessary to
# execute the GRANT statement.
$custom_unless = "SELECT 1 FROM (
SELECT table_name
FROM information_schema.tables
WHERE table_schema='${schema}'
EXCEPT DISTINCT
SELECT table_name
FROM information_schema.role_table_grants
WHERE grantee='${role}'
AND table_schema='${schema}'
AND privilege_type='${custom_privilege}'
) P
HAVING count(P.table_name) = 0"
}
default: {
fail("Missing privilege validation for object type ${_object_type}")
}
}
# This is used to give grant to "schemaname"."tablename"
# If you need such grant, use:
# postgresql::grant { 'table:foo':
# role => 'joe',
# ...
# object_type => 'TABLE',
# object_name => [$schema, $table],
# }
if is_array($_object_name) {
$_togrant_object = join($_object_name, '"."')
# Never put double quotes into has_*_privilege function
$_granted_object = join($_object_name, '.')
} else {
$_granted_object = $_object_name
$_togrant_object = $_object_name
}
$_unless = $unless_function ? {
false => undef,
'custom' => $custom_unless,
default => "SELECT 1 WHERE ${unless_function}('${role}',
'${_granted_object}', '${unless_privilege}')",
}
$_onlyif = $onlyif_function ? {
'table_exists' => "SELECT true FROM pg_tables WHERE tablename = '${_togrant_object}'",
default => undef,
}
$grant_cmd = "GRANT ${_privilege} ON ${_object_type} \"${_togrant_object}\" TO
\"${role}\""
postgresql_psql { "grant:${name}":
command => $grant_cmd,
db => $on_db,
port => $port_override,
connect_settings => $connect_settings,
psql_user => $psql_user,
psql_group => $group,
psql_path => $psql_path,
unless => $_unless,
onlyif => $_onlyif,
require => Class['postgresql::server']
}
if($role != undef and defined(Postgresql::Server::Role[$role])) {
Postgresql::Server::Role[$role]->Postgresql_psql["grant:${name}"]
}
if($db != undef and defined(Postgresql::Server::Database[$db])) {
Postgresql::Server::Database[$db]->Postgresql_psql["grant:${name}"]
}
}
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