| module ietf-netconf-acm { |
| namespace "urn:ietf:params:xml:ns:yang:ietf-netconf-acm"; |
| prefix nacm; |
| |
| import ietf-yang-types { |
| prefix yang; |
| } |
| |
| organization |
| "IETF NETCONF (Network Configuration) Working Group"; |
| contact |
| "WG Web: <http://tools.ietf.org/wg/netconf/> |
| WG List: <mailto:netconf@ietf.org> |
| |
| WG Chair: Mehmet Ersue |
| <mailto:mehmet.ersue@nsn.com> |
| |
| WG Chair: Bert Wijnen |
| <mailto:bertietf@bwijnen.net> |
| |
| Editor: Andy Bierman |
| <mailto:andy@yumaworks.com> |
| |
| Editor: Martin Bjorklund |
| <mailto:mbj@tail-f.com>"; |
| description |
| "NETCONF Access Control Model. |
| |
| Copyright (c) 2012 IETF Trust and the persons identified as |
| authors of the code. All rights reserved. |
| |
| Redistribution and use in source and binary forms, with or |
| without modification, is permitted pursuant to, and subject |
| to the license terms contained in, the Simplified BSD |
| License set forth in Section 4.c of the IETF Trust's |
| Legal Provisions Relating to IETF Documents |
| (http://trustee.ietf.org/license-info). |
| |
| This version of this YANG module is part of RFC 6536; see |
| the RFC itself for full legal notices."; |
| |
| revision 2012-02-22 { |
| description |
| "Initial version"; |
| reference |
| "RFC 6536: Network Configuration Protocol (NETCONF) |
| Access Control Model"; |
| } |
| |
| extension default-deny-write { |
| description |
| "Used to indicate that the data model node |
| represents a sensitive security system parameter. |
| |
| If present, and the NACM module is enabled (i.e., |
| /nacm/enable-nacm object equals 'true'), the NETCONF server |
| will only allow the designated 'recovery session' to have |
| write access to the node. An explicit access control rule is |
| required for all other users. |
| |
| The 'default-deny-write' extension MAY appear within a data |
| definition statement. It is ignored otherwise."; |
| } |
| |
| extension default-deny-all { |
| description |
| "Used to indicate that the data model node |
| controls a very sensitive security system parameter. |
| |
| If present, and the NACM module is enabled (i.e., |
| /nacm/enable-nacm object equals 'true'), the NETCONF server |
| will only allow the designated 'recovery session' to have |
| read, write, or execute access to the node. An explicit |
| access control rule is required for all other users. |
| |
| The 'default-deny-all' extension MAY appear within a data |
| definition statement, 'rpc' statement, or 'notification' |
| statement. It is ignored otherwise."; |
| } |
| |
| typedef user-name-type { |
| type string { |
| length "1..max"; |
| } |
| description |
| "General Purpose Username string."; |
| } |
| |
| typedef matchall-string-type { |
| type string { |
| pattern "\\*"; |
| } |
| description |
| "The string containing a single asterisk '*' is used |
| to conceptually represent all possible values |
| for the particular leaf using this data type."; |
| } |
| |
| typedef access-operations-type { |
| type bits { |
| bit create { |
| description |
| "Any protocol operation that creates a |
| new data node."; |
| } |
| bit read { |
| description |
| "Any protocol operation or notification that |
| returns the value of a data node."; |
| } |
| bit update { |
| description |
| "Any protocol operation that alters an existing |
| data node."; |
| } |
| bit delete { |
| description |
| "Any protocol operation that removes a data node."; |
| } |
| bit exec { |
| description |
| "Execution access to the specified protocol operation."; |
| } |
| } |
| description |
| "NETCONF Access Operation."; |
| } |
| |
| typedef group-name-type { |
| type string { |
| length "1..max"; |
| pattern "[^\\*].*"; |
| } |
| description |
| "Name of administrative group to which |
| users can be assigned."; |
| } |
| |
| typedef action-type { |
| type enumeration { |
| enum "permit" { |
| description |
| "Requested action is permitted."; |
| } |
| enum "deny" { |
| description |
| "Requested action is denied."; |
| } |
| } |
| description |
| "Action taken by the server when a particular |
| rule matches."; |
| } |
| |
| typedef node-instance-identifier { |
| type yang:xpath1.0; |
| description |
| "Path expression used to represent a special |
| data node instance identifier string. |
| |
| A node-instance-identifier value is an |
| unrestricted YANG instance-identifier expression. |
| All the same rules as an instance-identifier apply |
| except predicates for keys are optional. If a key |
| predicate is missing, then the node-instance-identifier |
| represents all possible server instances for that key. |
| |
| This XPath expression is evaluated in the following context: |
| |
| o The set of namespace declarations are those in scope on |
| the leaf element where this type is used. |
| |
| o The set of variable bindings contains one variable, |
| 'USER', which contains the name of the user of the current |
| session. |
| |
| o The function library is the core function library, but |
| note that due to the syntax restrictions of an |
| instance-identifier, no functions are allowed. |
| |
| o The context node is the root node in the data tree."; |
| } |
| |
| container nacm { |
| nacm:default-deny-all; |
| description |
| "Parameters for NETCONF Access Control Model."; |
| leaf enable-nacm { |
| type boolean; |
| default "true"; |
| description |
| "Enables or disables all NETCONF access control |
| enforcement. If 'true', then enforcement |
| is enabled. If 'false', then enforcement |
| is disabled."; |
| } |
| leaf read-default { |
| type action-type; |
| default "permit"; |
| description |
| "Controls whether read access is granted if |
| no appropriate rule is found for a |
| particular read request."; |
| } |
| leaf write-default { |
| type action-type; |
| default "deny"; |
| description |
| "Controls whether create, update, or delete access |
| is granted if no appropriate rule is found for a |
| particular write request."; |
| } |
| leaf exec-default { |
| type action-type; |
| default "permit"; |
| description |
| "Controls whether exec access is granted if no appropriate |
| rule is found for a particular protocol operation request."; |
| } |
| leaf enable-external-groups { |
| type boolean; |
| default "true"; |
| description |
| "Controls whether the server uses the groups reported by the |
| NETCONF transport layer when it assigns the user to a set of |
| NACM groups. If this leaf has the value 'false', any group |
| names reported by the transport layer are ignored by the |
| server."; |
| } |
| leaf denied-operations { |
| type yang:zero-based-counter32; |
| config false; |
| mandatory true; |
| description |
| "Number of times since the server last restarted that a |
| protocol operation request was denied."; |
| } |
| leaf denied-data-writes { |
| type yang:zero-based-counter32; |
| config false; |
| mandatory true; |
| description |
| "Number of times since the server last restarted that a |
| protocol operation request to alter |
| a configuration datastore was denied."; |
| } |
| leaf denied-notifications { |
| type yang:zero-based-counter32; |
| config false; |
| mandatory true; |
| description |
| "Number of times since the server last restarted that |
| a notification was dropped for a subscription because |
| access to the event type was denied."; |
| } |
| container groups { |
| description |
| "NETCONF Access Control Groups."; |
| list group { |
| key "name"; |
| description |
| "One NACM Group Entry. This list will only contain |
| configured entries, not any entries learned from |
| any transport protocols."; |
| leaf name { |
| type group-name-type; |
| description |
| "Group name associated with this entry."; |
| } |
| leaf-list user-name { |
| type user-name-type; |
| description |
| "Each entry identifies the username of |
| a member of the group associated with |
| this entry."; |
| } |
| } |
| } |
| list rule-list { |
| key "name"; |
| ordered-by user; |
| description |
| "An ordered collection of access control rules."; |
| leaf name { |
| type string { |
| length "1..max"; |
| } |
| description |
| "Arbitrary name assigned to the rule-list."; |
| } |
| leaf-list group { |
| type union { |
| type matchall-string-type; |
| type group-name-type; |
| } |
| description |
| "List of administrative groups that will be |
| assigned the associated access rights |
| defined by the 'rule' list. |
| |
| The string '*' indicates that all groups apply to the |
| entry."; |
| } |
| list rule { |
| key "name"; |
| ordered-by user; |
| description |
| "One access control rule. |
| |
| Rules are processed in user-defined order until a match is |
| found. A rule matches if 'module-name', 'rule-type', and |
| 'access-operations' match the request. If a rule |
| matches, the 'action' leaf determines if access is granted |
| or not."; |
| leaf name { |
| type string { |
| length "1..max"; |
| } |
| description |
| "Arbitrary name assigned to the rule."; |
| } |
| leaf module-name { |
| type union { |
| type matchall-string-type; |
| type string; |
| } |
| default "*"; |
| description |
| "Name of the module associated with this rule. |
| |
| This leaf matches if it has the value '*' or if the |
| object being accessed is defined in the module with the |
| specified module name."; |
| } |
| choice rule-type { |
| description |
| "This choice matches if all leafs present in the rule |
| match the request. If no leafs are present, the |
| choice matches all requests."; |
| case protocol-operation { |
| leaf rpc-name { |
| type union { |
| type matchall-string-type; |
| type string; |
| } |
| description |
| "This leaf matches if it has the value '*' or if |
| its value equals the requested protocol operation |
| name."; |
| } |
| } |
| case notification { |
| leaf notification-name { |
| type union { |
| type matchall-string-type; |
| type string; |
| } |
| description |
| "This leaf matches if it has the value '*' or if its |
| value equals the requested notification name."; |
| } |
| } |
| case data-node { |
| leaf path { |
| type node-instance-identifier; |
| mandatory true; |
| description |
| "Data Node Instance Identifier associated with the |
| data node controlled by this rule. |
| |
| Configuration data or state data instance |
| identifiers start with a top-level data node. A |
| complete instance identifier is required for this |
| type of path value. |
| |
| The special value '/' refers to all possible |
| datastore contents."; |
| } |
| } |
| } |
| leaf access-operations { |
| type union { |
| type matchall-string-type; |
| type access-operations-type; |
| } |
| default "*"; |
| description |
| "Access operations associated with this rule. |
| |
| This leaf matches if it has the value '*' or if the |
| bit corresponding to the requested operation is set."; |
| } |
| leaf action { |
| type action-type; |
| mandatory true; |
| description |
| "The access control action associated with the |
| rule. If a rule is determined to match a |
| particular request, then this object is used |
| to determine whether to permit or deny the |
| request."; |
| } |
| leaf comment { |
| type string; |
| description |
| "A textual description of the access rule."; |
| } |
| } |
| } |
| } |
| } |