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| -rw-r--r-- | schema/interface_definition.rnc | 154 | ||||
| -rw-r--r-- | schema/interface_definition.rng | 7 |
2 files changed, 160 insertions, 1 deletions
diff --git a/schema/interface_definition.rnc b/schema/interface_definition.rnc new file mode 100644 index 000000000..02175fec8 --- /dev/null +++ b/schema/interface_definition.rnc @@ -0,0 +1,154 @@ +# interface_definition.rnc: VyConf reference tree XML grammar +# +# Copyright (C) 2014. 2017 VyOS maintainers and contributors <maintainers@vyos.net> +# +# This library is free software; you can redistribute it and/or +# modify it under the terms of the GNU Lesser General Public +# License as published by the Free Software Foundation; either +# version 2.1 of the License, or (at your option) any later version. +# +# This library is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# Lesser General Public License for more details. +# +# You should have received a copy of the GNU Lesser General Public +# License along with this library; if not, write to the Free Software +# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 +# USA + +# The language of this file is compact form RELAX-NG +# http://relaxng.org/compact-tutorial-20030326.htm +# (unless converted to XML, then just RELAX-NG :) + +# Interface definition starts with interfaceDefinition tag that may contain node tags +start = element interfaceDefinition +{ + node* +} + +# node tag may contain node, leafNode, or tagNode tags +# Those are intermediate configuration nodes that may only contain +# other nodes and must not have values +node = element node +{ + (ownerAttr? & nodeNameAttr), + (properties? & children? ) +} + +# Tag nodes are containers for nodes without predefined names, like network interfaces +# or user names (e.g. "interfaces ethernet eth0" or "user jrandomhacker") +# Tag nodes may contain node and leafNode elements, and also nameConstraint tags +# They must not contain other tag nodes +tagNode = element tagNode +{ + (ownerAttr? & nodeNameAttr), + (properties? & children ) +} + +# Leaf nodes are terminal configuration nodes that can't have children, +# but can have values. +# Leaf node may contain one or more valueConstraint tags +# If multiple valueConstraint tags are used, they work a logical OR +# Leaf nodes can have "multi" attribute that indicated that it can have +# more than one value +leafNode = element leafNode +{ + (ownerAttr? & nodeNameAttr), + properties +} + +# Normal and tag nodes may have children +children = element children +{ + (node | tagNode | leafNode)+ +} + +# Nodes may have properties +# For simplicity, any property is allowed in any node, +# but whether they are used or not is implementation-defined +# +# Leaf nodes may differ in number of values that can be +# associated with them. +# By default, a leaf node can have only one value. +# "multi" tag means a node can have one or more values, +# "valueless" means it can have no values at all. +# "hidden" means node visibility can be toggled, eg 'dangerous' commands, +# "secret" allows a node to hide its value from unprivileged users. +# +# "priority" is used to influence node processing order for nodes +# with exact same dependencies and in compatibility modes. +properties = element properties +{ + help? & + constraint? & + valueHelp* & + (element constraintErrorMessage { text })? & + completionHelp* & + + # These are meaningful only for leaf nodes + (element valueless { empty })? & + (element multi { empty })? & + (element hidden { empty })? & + (element secret { empty })? & + (element priority { text })? & + + # These are meaningful only for tag nodes + (element keepChildOrder { empty })? +} + +# All nodes must have "name" attribute +nodeNameAttr = attribute name +{ + text +} + +# Ordinary nodes and tag nodes can have "owner" attribute. +# Owner is the component that is notified when node changes. +ownerAttr = attribute owner +{ + text +} + +# Tag and leaf nodes may have constraints on their names and values +# (respectively). +# When multiple constraints are listed, they work as logical OR +constraint = element constraint +{ + ( (element regex { text }) | + validator )+ +} + +# A constraint may also use an external validator rather than regex +validator = element validator +{ + ( (attribute name { text }) & + (attribute argument { text })? ), + empty +} + +# help tags contains brief description of the purpose of the node +help = element help +{ + text +} + +# valueHelp tags contain information about acceptable value format +valueHelp = element valueHelp +{ + element format { text } & + element description { text } +} + +# completionHelp tags contain information about allowed values of a node that is used for generating +# tab completion in the CLI frontend and drop-down lists in GUI frontends +# It is only meaninful for leaf nodes +# Allowed values can be given as a fixed list of values (e.g. <list>foo bar baz</list>), +# as a configuration path (e.g. <path>interfaces ethernet</path>), +# or as a path to a script file that generates the list (e.g. <script>/usr/lib/foo/list-things</script> +completionHelp = element completionHelp +{ + (element list { text })* & + (element path { text })* & + (element script { text })* +} diff --git a/schema/interface_definition.rng b/schema/interface_definition.rng index d1bd9a708..195ef27f4 100644 --- a/schema/interface_definition.rng +++ b/schema/interface_definition.rng @@ -88,7 +88,12 @@ --> <define name="leafNode"> <element name="leafNode"> - <ref name="nodeNameAttr"/> + <interleave> + <optional> + <ref name="ownerAttr"/> + </optional> + <ref name="nodeNameAttr"/> + </interleave> <ref name="properties"/> </element> </define> |