/
smi.y
1923 lines (1747 loc) · 32.7 KB
/
smi.y
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/*
* Original parsing rules from the libsmi library:
*
* Copyright (c) 1999 Frank Strauss, Technical University of Braunschweig.
*
* This software is copyrighted by Frank Strauss, the Technical University
* of Braunschweig, and other parties. The following terms apply to all
* files associated with the software unless explicitly disclaimed in
* individual files.
*
* The authors hereby grant permission to use, copy, modify, distribute,
* and license this software and its documentation for any purpose, provided
* that existing copyright notices are retained in all copies and that this
* notice is included verbatim in any distributions. No written agreement,
* license, or royalty fee is required for any of the authorized uses.
* Modifications to this software may be copyrighted by their authors
* and need not follow the licensing terms described here, provided that
* the new terms are clearly indicated on the first page of each file where
* they apply.
*
* IN NO EVENT SHALL THE AUTHORS OR DISTRIBUTORS BE LIABLE TO ANY PARTY
* FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
* ARISING OUT OF THE USE OF THIS SOFTWARE, ITS DOCUMENTATION, OR ANY
* DERIVATIVES THEREOF, EVEN IF THE AUTHORS HAVE BEEN ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* THE AUTHORS AND DISTRIBUTORS SPECIFICALLY DISCLAIM ANY WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT. THIS SOFTWARE
* IS PROVIDED ON AN "AS IS" BASIS, AND THE AUTHORS AND DISTRIBUTORS HAVE
* NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR
* MODIFICATIONS.
*
* Portions of this file specific to the Go programming language:
*
* Copyright (c) 2019 David R. Halliday. All rights reserved.
*
* Use of this source code is governed by an MIT-style license
* that can be found in the LICENSE file.
*/
%{
package smi
%}
/*
* The grammars start symbol.
*/
%start mibFile
/*
* The attributes.
*/
%union {
text string
id string
err int
date string
objectPtr string
SmiStatus int
SmiAccess int
typePtr string
listPtr string
namedNumberPtr string
rangePtr string
valuePtr string
unsigned32 uint32
integer32 int32
unsigned64 uint64
integer64 int64
compl string
index string
modulePtr string
subjectCategoriesPtr string
subid SubID
subidList []SubID
node Node
nodeList []Node
idList []string
imp Import
impList []Import
}
/*
* Tokens and their attributes.
*/
%token tDOT_DOT
%token tCOLON_COLON_EQUAL
%token <id>tUPPERCASE_IDENTIFIER
%token <id>tLOWERCASE_IDENTIFIER
%token <unsigned32>tNUMBER
%token <integer32>tNEGATIVENUMBER
%token <unsigned64>tNUMBER64
%token <integer64>tNEGATIVENUMBER64
%token <text>tBIN_STRING
%token <text>tHEX_STRING
%token <text>tQUOTED_STRING
%token <id>tACCESS
%token <id>tAGENT_CAPABILITIES
%token <id>tAPPLICATION
%token <id>tAUGMENTS
%token <id>tBEGIN_
%token <id>tBITS
%token <id>tCHOICE
%token <id>tCONTACT_INFO
%token <id>tCREATION_REQUIRES
%token <id>tCOUNTER32
%token <id>tCOUNTER64
%token <id>tDEFINITIONS
%token <id>tDEFVAL
%token <id>tDESCRIPTION
%token <id>tDISPLAY_HINT
%token <id>tEND
%token <id>tENTERPRISE
%token <id>tEXPORTS
%token <id>tEXTENDS
%token <id>tFROM
%token <id>tGROUP
%token <id>tGAUGE32
%token <id>tIDENTIFIER
%token <id>tIMPLICIT
%token <id>tIMPLIED
%token <id>tIMPORTS
%token <id>tINCLUDES
%token <id>tINDEX
%token <id>tINSTALL_ERRORS
%token <id>tINTEGER
%token <id>tINTEGER32
%token <id>tINTEGER64
%token <id>tIPADDRESS
%token <id>tLAST_UPDATED
%token <id>tMACRO
%token <id>tMANDATORY_GROUPS
%token <id>tMAX_ACCESS
%token <id>tMIN_ACCESS
%token <id>tMODULE
%token <id>tMODULE_COMPLIANCE
%token <id>tMODULE_IDENTITY
%token <id>tNOT_ACCESSIBLE
%token <id>tNOTIFICATIONS
%token <id>tNOTIFICATION_GROUP
%token <id>tNOTIFICATION_TYPE
%token <id>tOBJECT
%token <id>tOBJECT_GROUP
%token <id>tOBJECT_IDENTITY
%token <id>tOBJECT_TYPE
%token <id>tOBJECTS
%token <id>tOCTET
%token <id>tOF
%token <id>tORGANIZATION
%token <id>tOPAQUE
%token <id>tPIB_ACCESS
%token <id>tPIB_DEFINITIONS
%token <id>tPIB_INDEX
%token <id>tPIB_MIN_ACCESS
%token <id>tPIB_REFERENCES
%token <id>tPIB_TAG
%token <id>tPOLICY_ACCESS
%token <id>tPRODUCT_RELEASE
%token <id>tREFERENCE
%token <id>tREVISION
%token <id>tSEQUENCE
%token <id>tSIZE
%token <id>tSTATUS
%token <id>tSTRING
%token <id>tSUBJECT_CATEGORIES
%token <id>tSUPPORTS
%token <id>tSYNTAX
%token <id>tTEXTUAL_CONVENTION
%token <id>tTIMETICKS
%token <id>tTRAP_TYPE
%token <id>tUNIQUENESS
%token <id>tUNITS
%token <id>tUNIVERSAL
%token <id>tUNSIGNED32
%token <id>tUNSIGNED64
%token <id>tVALUE
%token <id>tVARIABLES
%token <id>tVARIATION
%token <id>tWRITE_SYNTAX
/*
* Types of non-terminal symbols.
*/
%type <err>mibFile
%type <err>modules
%type <err>module
%type <err>moduleOid
%type <id>moduleName
%type <id>importIdentifier
%type <idList>importIdentifiers
%type <id>importedKeyword
%type <id>importedSMIKeyword
%type <id>importedSPPIKeyword
%type <impList>linkagePart
%type <impList>linkageClause
%type <impList>importPart
%type <impList>imports
%type <imp> import
%type <nodeList>declarationPart
%type <nodeList>declarations
%type <node>declaration
%type <err>exportsClause
%type <err>macroClause
%type <id>macroName
%type <typePtr>choiceClause
%type <id>typeName
%type <id>typeSMI
%type <id>typeSMIonly
%type <id>typeSMIandSPPI
%type <id>typeSPPIonly
%type <err>typeTag
%type <id>fuzzy_lowercase_identifier
%type <node>valueDeclaration
%type <typePtr>conceptualTable
%type <typePtr>row
%type <typePtr>entryType
%type <listPtr>sequenceItems
%type <objectPtr>sequenceItem
%type <typePtr>Syntax
%type <typePtr>sequenceSyntax
%type <listPtr>NamedBits
%type <namedNumberPtr>NamedBit
%type <node>objectIdentityClause
%type <node>objectTypeClause
%type <err>trapTypeClause
%type <text>descriptionClause
%type <listPtr>VarPart
%type <listPtr>VarTypes
%type <objectPtr>VarType
%type <text>DescrPart
%type <access>MaxAccessPart
%type <access>MaxOrPIBAccessPart
%type <access>PibAccessPart
%type <node>notificationTypeClause
%type <node>moduleIdentityClause
%type <err>typeDeclaration
%type <typePtr>typeDeclarationRHS
%type <typePtr>ObjectSyntax
%type <typePtr>sequenceObjectSyntax
%type <valuePtr>valueofObjectSyntax
%type <typePtr>SimpleSyntax
%type <valuePtr>valueofSimpleSyntax
%type <typePtr>sequenceSimpleSyntax
%type <typePtr>ApplicationSyntax
%type <typePtr>sequenceApplicationSyntax
%type <listPtr>anySubType
%type <listPtr>integerSubType
%type <listPtr>octetStringSubType
%type <listPtr>ranges
%type <rangePtr>range
%type <valuePtr>value
%type <listPtr>enumSpec
%type <listPtr>enumItems
%type <namedNumberPtr>enumItem
%type <valuePtr>enumNumber
%type <status>Status
%type <status>Status_Capabilities
%type <text>DisplayPart
%type <text>UnitsPart
%type <access>Access
%type <index>IndexPart
%type <index>MibIndex
%type <listPtr>IndexTypes
%type <objectPtr>IndexType
%type <objectPtr>Index
%type <objectPtr>Entry
%type <valuePtr>DefValPart
%type <valuePtr>Value
%type <listPtr>BitsValue
%type <listPtr>BitNames
%type <subidList>ObjectName
%type <subidList>NotificationName
%type <text>ReferPart
%type <err>RevisionPart
%type <err>Revisions
%type <err>Revision
%type <listPtr>NotificationObjectsPart
%type <listPtr>ObjectGroupObjectsPart
%type <listPtr>Objects
%type <objectPtr>Object
%type <listPtr>NotificationsPart
%type <listPtr>Notifications
%type <objectPtr>Notification
%type <text>Text
%type <date>ExtUTCTime
%type <subidList>objectIdentifier
%type <subidList>subidentifiers
%type <subid>subidentifier
%type <text>objectIdentifier_defval
%type <err>subidentifiers_defval
%type <err>subidentifier_defval
%type <err>objectGroupClause
%type <err>notificationGroupClause
%type <err>moduleComplianceClause
%type <compl>ComplianceModulePart
%type <compl>ComplianceModules
%type <compl>ComplianceModule
%type <modulePtr>ComplianceModuleName
%type <listPtr>MandatoryPart
%type <listPtr>MandatoryGroups
%type <objectPtr>MandatoryGroup
%type <compl>CompliancePart
%type <compl>Compliances
%type <compl>Compliance
%type <listPtr>ComplianceGroup
%type <listPtr>ComplianceObject
%type <typePtr>SyntaxPart
%type <typePtr>WriteSyntaxPart
%type <typePtr>WriteSyntax
%type <access>AccessPart
%type <err>agentCapabilitiesClause
%type <err>ModulePart_Capabilities
%type <err>Modules_Capabilities
%type <err>Module_Capabilities
%type <modulePtr>ModuleName_Capabilities
%type <listPtr>CapabilitiesGroups
%type <listPtr>CapabilitiesGroup
%type <err>VariationPart
%type <err>Variations
%type <err>Variation
%type <access>VariationAccessPart
%type <access>VariationAccess
%type <err>CreationPart
%type <err>Cells
%type <err>Cell
%type <objectPtr>SPPIPibReferencesPart
%type <objectPtr>SPPIPibTagPart
%type <subjectCategoriesPtr>SubjectCategoriesPart
%type <subjectCategoriesPtr>SubjectCategories
%type <listPtr>CategoryIDs
%type <objectPtr>CategoryID
%type <objectPtr>UniqueType
%type <listPtr>UniqueTypes
%type <listPtr>UniqueTypesPart
%type <listPtr>SPPIUniquePart
%type <objectPtr>Error
%type <listPtr>Errors
%type <listPtr>SPPIErrorsPart
%%
/*
* One mibFile may contain multiple MIB modules.
* It's also possible that there's no module in a file.
*/
mibFile:
modules
| /* empty */
{}
;
modules: module
| modules module
{}
;
/*
* The general structure of a module is described at REF:RFC1902,3. .
* An example is given at REF:RFC1902,5.7. .
*/
module: moduleName
moduleOid
definitions
tCOLON_COLON_EQUAL tBEGIN_
exportsClause
linkagePart
declarationPart
tEND
{
m := Module{Name: $1, Imports: $7, Nodes: $8}
setModule(&smilex, &m)
}
;
moduleOid: '{' objectIdentifier '}'
{}
| /* empty */
{}
;
definitions: tDEFINITIONS
{}
| tPIB_DEFINITIONS
{}
;
/*
* REF:RFC1902,3.2.
*/
linkagePart: linkageClause
| /* empty */
{
$$ = []Import{}
}
;
linkageClause: tIMPORTS importPart ';'
{
$$ = $2
}
;
exportsClause: /* empty */
{}
| tEXPORTS
{}
/* the scanner skips until... */
';'
{}
;
importPart: imports
| /* empty */
{
$$ = []Import{}
}
;
imports: import
{
$$ = []Import{$1}
}
| imports import
{
$$ = append($1, $2)
}
;
import: importIdentifiers
tFROM
moduleName
{
$$ = Import{From: $3, Symbols: $1}
}
;
importIdentifiers: importIdentifier
{
$$ = []string{$1}
}
| importIdentifiers ',' importIdentifier
{
$$ = append($1, $3)
}
;
/*
* Note that some named types must not be imported, REF:RFC1902,590 .
*/
importIdentifier: tLOWERCASE_IDENTIFIER
| tUPPERCASE_IDENTIFIER
| importedKeyword
;
/*
* These keywords are no real keywords. They have to be imported
* from the SMI, TC, CONF MIBs.
*/
importedKeyword: importedSMIKeyword
{}
| importedSPPIKeyword
{}
| tBITS
| tINTEGER32
| tIPADDRESS
| tMANDATORY_GROUPS
| tMODULE_COMPLIANCE
| tMODULE_IDENTITY
| tOBJECT_GROUP
| tOBJECT_IDENTITY
| tOBJECT_TYPE
| tOPAQUE
| tTEXTUAL_CONVENTION
| tTIMETICKS
| tUNSIGNED32
;
importedSMIKeyword: tAGENT_CAPABILITIES
| tCOUNTER32
| tCOUNTER64
| tGAUGE32
| tNOTIFICATION_GROUP
| tNOTIFICATION_TYPE
| tTRAP_TYPE
;
importedSPPIKeyword: tINTEGER64
| tUNSIGNED64
;
moduleName: tUPPERCASE_IDENTIFIER
;
/*
* The paragraph at REF:RFC1902,490 lists roughly what is allowed
* in the body of an information module.
*/
declarationPart: declarations
{}
| /* empty */
{}
;
declarations: declaration
{
if $1.Type != NodeNotSupported {
$$ = []Node{$1}
} else {
$$ = []Node{}
}
}
| declarations declaration
{
if $2.Type != NodeNotSupported {
$$ = append($1, $2)
}
}
;
declaration: typeDeclaration
{
}
| valueDeclaration
{
}
| objectIdentityClause
{
}
| objectTypeClause
{
}
| trapTypeClause
{
}
| notificationTypeClause
{
}
| moduleIdentityClause
{
}
| moduleComplianceClause
{
}
| objectGroupClause
{
}
| notificationGroupClause
{
}
| agentCapabilitiesClause
{
}
| macroClause
{
}
| error '}'
{
}
;
/*
* Macro clauses. Its contents are not really parsed, but skipped by
* the scanner until 'tEND' is read. This is just to make the SMI
* documents readable.
*/
macroClause: macroName
{
}
tMACRO
{
}
/* the scanner skips until... */
tEND
{
}
;
macroName: tMODULE_IDENTITY { $$ = $1; }
| tOBJECT_TYPE { $$ = $1; }
| tTRAP_TYPE { $$ = $1; }
| tNOTIFICATION_TYPE { $$ = $1; }
| tOBJECT_IDENTITY { $$ = $1; }
| tTEXTUAL_CONVENTION { $$ = $1; }
| tOBJECT_GROUP { $$ = $1; }
| tNOTIFICATION_GROUP { $$ = $1; }
| tMODULE_COMPLIANCE { $$ = $1; }
| tAGENT_CAPABILITIES { $$ = $1; }
;
choiceClause: tCHOICE
{
}
/* the scanner skips until... */
'}'
{
}
;
/*
* The only ASN.1 value declarations are for OIDs, REF:RFC1902,491 .
*/
fuzzy_lowercase_identifier: tLOWERCASE_IDENTIFIER
{
}
|
tUPPERCASE_IDENTIFIER
{
}
;
valueDeclaration: fuzzy_lowercase_identifier
tOBJECT tIDENTIFIER
tCOLON_COLON_EQUAL '{' objectIdentifier '}'
{
$$ = Node{Label: $1, Type: NodeObjectID, IDs: $6}
}
;
/*
* This is for simple ASN.1 style type assignments and textual conventions.
*/
typeDeclaration: typeName
{
}
tCOLON_COLON_EQUAL typeDeclarationRHS
{
}
;
typeName: tUPPERCASE_IDENTIFIER
{
}
| typeSMI
{
}
| typeSPPIonly
{
}
;
typeSMI: typeSMIandSPPI
| typeSMIonly
{
}
;
typeSMIandSPPI: tIPADDRESS
| tTIMETICKS
| tOPAQUE
| tINTEGER32
| tUNSIGNED32
;
typeSMIonly: tCOUNTER32
| tGAUGE32
| tCOUNTER64
;
typeSPPIonly: tINTEGER64
| tUNSIGNED64
;
typeDeclarationRHS: Syntax
{
}
| tTEXTUAL_CONVENTION
{
}
DisplayPart
tSTATUS Status
tDESCRIPTION Text
{
}
ReferPart
tSYNTAX Syntax
{
}
| choiceClause
{
}
;
/* REF:RFC1902,7.1.12. */
conceptualTable: tSEQUENCE tOF row
{
}
;
row: tUPPERCASE_IDENTIFIER
/*
* In this case, we do NOT allow `Module.Type'.
* The identifier must be defined in the local
* module.
*/
{
}
;
/* REF:RFC1902,7.1.12. */
entryType: tSEQUENCE '{' sequenceItems '}'
{
}
;
sequenceItems: sequenceItem
{
}
| sequenceItems ',' sequenceItem
{
}
;
/*
* In a SEQUENCE { ... } there are no sub-types, enumerations or
* named bits. REF: draft, p.29
* NOTE: REF:RFC1902,7.1.12. was less clear, it said:
* `normally omitting the sub-typing information'
*/
sequenceItem: tLOWERCASE_IDENTIFIER sequenceSyntax
{
}
;
Syntax: ObjectSyntax
{
}
| tBITS '{' NamedBits '}'
{
}
;
sequenceSyntax: /* ObjectSyntax */
sequenceObjectSyntax
{
}
| tBITS
{
}
| tUPPERCASE_IDENTIFIER anySubType
{
}
;
NamedBits: NamedBit
{
}
| NamedBits ',' NamedBit
{
}
;
NamedBit: tLOWERCASE_IDENTIFIER
{
}
'(' tNUMBER ')'
{
}
;
objectIdentityClause: tLOWERCASE_IDENTIFIER
tOBJECT_IDENTITY
tSTATUS Status
tDESCRIPTION Text
ReferPart
tCOLON_COLON_EQUAL
'{' objectIdentifier '}'
{
$$ = Node{Label: $1, Type: NodeObjectID, IDs: $10}
}
;
objectTypeClause: tLOWERCASE_IDENTIFIER
tOBJECT_TYPE
tSYNTAX Syntax /* old $6, new $6 */
UnitsPart /* old $7, new $7 */
MaxOrPIBAccessPart /* old $8, new $8 */
SPPIPibReferencesPart /* SPPI only, $9 */
SPPIPibTagPart /* SPPI only, $10 */
tSTATUS Status /* old $9 $10, new $11 $12 */
descriptionClause /* old $11, new $13 */
SPPIErrorsPart /* SPPI only, $14 */
ReferPart /* old $12, new $15 */
IndexPart /* modified, old $13, new $16 */
MibIndex /* new, $17 */
SPPIUniquePart /* SPPI only, $18 */
DefValPart /* old $14, new $19 */
tCOLON_COLON_EQUAL '{' ObjectName '}' /* old $17, new $22 */
{
$$ = Node{Label: $1, Type: NodeObjectType, IDs: $20}
}
;
descriptionClause: /* empty */
{
}
| tDESCRIPTION Text
{
}
;
trapTypeClause: fuzzy_lowercase_identifier
{
}
tTRAP_TYPE
{
}
tENTERPRISE objectIdentifier
VarPart
DescrPart
ReferPart
tCOLON_COLON_EQUAL tNUMBER
{
}
;
VarPart: tVARIABLES '{' VarTypes '}'
{
}
| /* empty */
{
}
;
VarTypes: VarType
{
}
| VarTypes ',' VarType
{
}
;
VarType: ObjectName
{
}
;
DescrPart: tDESCRIPTION Text
{
}
| /* empty */
{}
;
MaxOrPIBAccessPart: MaxAccessPart
{
}
| PibAccessPart
{
}
| /* empty */
{ }
;
PibAccessPart: PibAccess Access
{ }
;
PibAccess: tPOLICY_ACCESS
{
}
| tPIB_ACCESS
{ }
;
SPPIPibReferencesPart: tPIB_REFERENCES
{
}
'{' Entry '}'
{}
| /* empty */
{}
;
SPPIPibTagPart: tPIB_TAG
{
}
'{' ObjectName '}'
{}
| /* empty */
{}
;
SPPIUniquePart: tUNIQUENESS
{
}
'{' UniqueTypesPart '}'
{}
| /* empty */
{}
;
UniqueTypesPart: UniqueTypes
{}
| /* empty */
{}
;
UniqueTypes: UniqueType
{
}
| UniqueTypes ',' UniqueType
{
}
;
UniqueType: ObjectName
{}
;
SPPIErrorsPart: tINSTALL_ERRORS
{
}
'{' Errors '}'
{}
| /* empty */
{}
;
Errors: Error
{
}
| Errors ',' Error
{
}
;
Error: tLOWERCASE_IDENTIFIER '(' tNUMBER ')'
{
}
;
MaxAccessPart: tMAX_ACCESS
{
}
Access
{ }
| tACCESS
{
}
Access
{ }
;
notificationTypeClause: tLOWERCASE_IDENTIFIER
tNOTIFICATION_TYPE
NotificationObjectsPart
tSTATUS Status
tDESCRIPTION Text
ReferPart
tCOLON_COLON_EQUAL
'{' NotificationName '}'
{
$$ = Node{Label: $1, Type: NodeNotification, IDs: $11}
}
;
moduleIdentityClause: tLOWERCASE_IDENTIFIER
tMODULE_IDENTITY
SubjectCategoriesPart /* SPPI only */
tLAST_UPDATED ExtUTCTime
tORGANIZATION Text
tCONTACT_INFO Text
tDESCRIPTION Text
RevisionPart
tCOLON_COLON_EQUAL
'{' objectIdentifier '}'
{
$$ = Node{Label: $1, Type: NodeModuleID, IDs: $15}
}
;
SubjectCategoriesPart: tSUBJECT_CATEGORIES '{' SubjectCategories '}'
{
}
| /* empty */
{
}
;
SubjectCategories: CategoryIDs
{
}
;
CategoryIDs: CategoryID
{
}
| CategoryIDs ',' CategoryID