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| -rw-r--r-- | yang/ietf/ietf-netconf-acm.yang | 464 |
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diff --git a/yang/ietf/ietf-netconf-acm.yang b/yang/ietf/ietf-netconf-acm.yang new file mode 100644 index 0000000..f7e02f2 --- /dev/null +++ b/yang/ietf/ietf-netconf-acm.yang @@ -0,0 +1,464 @@ +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: <https://datatracker.ietf.org/wg/netconf/> + WG List: <mailto:netconf@ietf.org> + + Author: Andy Bierman + <mailto:andy@yumaworks.com> + + Author: Martin Bjorklund + <mailto:mbj@tail-f.com>"; + + description + "Network Configuration Access Control Model. + + Copyright (c) 2012 - 2018 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 + (https://trustee.ietf.org/license-info). + + This version of this YANG module is part of RFC 8341; see + the RFC itself for full legal notices."; + + revision 2018-02-14 { + description + "Added support for YANG 1.1 actions and notifications tied to + data nodes. Clarified how NACM extensions can be used by + other data models."; + reference + "RFC 8341: Network Configuration Access Control Model"; + } + + revision 2012-02-22 { + description + "Initial version."; + reference + "RFC 6536: Network Configuration Protocol (NETCONF) + Access Control Model"; + } + + /* + * Extension statements + */ + + extension default-deny-write { + description + "Used to indicate that the data model node + represents a sensitive security system parameter. + + If present, 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. + + If the NACM module is used, then it must be enabled (i.e., + /nacm/enable-nacm object equals 'true'), or this extension + is ignored. + + 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, 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. + + If the NACM module is used, then it must be enabled (i.e., + /nacm/enable-nacm object equals 'true'), or this extension + is ignored. + + The 'default-deny-all' extension MAY appear within a data + definition statement, 'rpc' statement, or 'notification' + statement. It is ignored otherwise."; + } + + /* + * Derived types + */ + + 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 + "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, action, or notification 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 that 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 XML Path Language (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. + + The accessible tree includes actions and notifications tied + to data nodes."; + } + + /* + * Data definition statements + */ + + 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 whether or not + access is granted."; + + 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, action, or notification 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 has been 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."; + } + } + } + } +} |