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64 changes: 52 additions & 12 deletions g4/SecLangLexer.g4
Original file line number Diff line number Diff line change
Expand Up @@ -308,7 +308,7 @@ ACTION_SETUID
;

ACTION_SETVAR
: 'setvar'
: 'setvar' -> pushMode(SETVAR)
;

ACTION_SEVERITY
Expand Down Expand Up @@ -1143,47 +1143,87 @@ STRING
mode MACRO;

MACRO_EXPANSION
: VARIABLE_NAME '}' -> popMode
: (LETTER | DIGIT) (LETTER | DIGIT | '_' | '-' | '.')* '}' -> popMode
;

mode SETVAR;

COLON_SETVAR
: ':' -> type(COLON)
;

SINGLE_QUOTE_SETVAR
: '\'' -> type(SINGLE_QUOTE)
;

COLLECTION_NAME_SETVAR
: ('ip'
| 'IP'
| 'global'
| 'GLOBAL'
| 'resource'
| 'RESOURCE'
| 'session'
| 'SESSION'
| 'user'
| 'USER'
| 'tx'
| 'TX')
;

DOT
: '.'
;

COLLECTION_ELEMENT
: ('t'|'T') ('x'|'X') '.' (LETTER) (LETTER | DIGIT | '_' | '-')* -> popMode
: (LETTER | DIGIT) (LETTER | DIGIT | '_' | '-')*
;

COLLECTION_WITH_MACRO
: 'tx.' IDENT '{%' -> mode(MACRO)
: '%{' -> pushMode(MACRO)
;

VAR_ASSIGNMENT
: ~('\''|' ')+ -> popMode
;

EQUAL_SETVAR
: '=' -> type(EQUAL)
: '=' -> type(EQUAL), pushMode(SETVAR_ASSIGNMENT)
;

EQUALS_PLUS_SETVAR
: EQUAL_SETVAR '+' -> type(EQUALS_PLUS)
: EQUAL_SETVAR '+' -> type(EQUALS_PLUS), pushMode(SETVAR_ASSIGNMENT)
;

EQUALS_MINUS_SETVAR
: EQUAL_SETVAR '-' -> type(EQUALS_MINUS)
: EQUAL_SETVAR '-' -> type(EQUALS_MINUS), pushMode(SETVAR_ASSIGNMENT)
;


mode SETVAR_ASSIGNMENT;

VAR_ASSIGNMENT
: ('\\\''|~('\''|','|'"'))+
;

SINGLE_QUOTE_SETVAR_ASSIGNMENT
: '\'' -> type(SINGLE_QUOTE), pushMode(DEFAULT_MODE)
;

QUOTE_SETVAR_ASSIGNMENT
: '"' -> type(QUOTE), pushMode(DEFAULT_MODE)
;

COMMA_SETVAR_ASSIGNMENT
: ',' -> type(COMMA), pushMode(DEFAULT_MODE)
;

SPACE_SETVAR_ASSIGNMENT
: WS -> skip
;

mode COMMA_SEPARATED_STRING_MODE;

COLON_COMMA_STRING
: COLON_DEFAULT -> type(COLON)
;


COMMA_SEPARATED_STRING
: ~([:,"])+ -> popMode
;
Expand Down
16 changes: 11 additions & 5 deletions g4/SecLangParser.g4
Original file line number Diff line number Diff line change
Expand Up @@ -225,7 +225,6 @@ values:
| CONFIG_VALUE_PATH
| STRING
| VARIABLE_NAME
| VAR_ASSIGNMENT
| COMMA_SEPARATED_STRING
| ACTION_CTL_BODY_PROCESSOR_TYPE
| AUDIT_PARTS
Expand Down Expand Up @@ -434,6 +433,7 @@ flow_action_with_params:

action_value:
action_value_types
| SINGLE_QUOTE action_value_types SINGLE_QUOTE
| SINGLE_QUOTE string_literal SINGLE_QUOTE
;

Expand Down Expand Up @@ -474,17 +474,23 @@ collection_value:
;

setvar_action:
setvar_stmt assignment values
col_name DOT setvar_stmt assignment var_assignment
;

col_name:
COLLECTION_NAME_SETVAR
;

setvar_stmt:
COLLECTION_ELEMENT
| COLLECTION_WITH_MACRO
| VARIABLE_NAME
(COLLECTION_ELEMENT | COLLECTION_WITH_MACRO MACRO_EXPANSION) +
;

assignment:
EQUAL
| EQUALS_PLUS
| EQUALS_MINUS
;

var_assignment:
VAR_ASSIGNMENT
;
19 changes: 19 additions & 0 deletions listener.go
Original file line number Diff line number Diff line change
Expand Up @@ -26,6 +26,9 @@ type ParserResult struct {
rangeEvents []string
rangeStartEvents []int
rangeEndEvents []int
setvarCollections []string
setvarNames []string
setvarOperations []string
}

type TreeShapeListener struct {
Expand Down Expand Up @@ -156,3 +159,19 @@ func (l *TreeShapeListener) EnterOperator_value(ctx *parser.Operator_valueContex
func (l *TreeShapeListener) EnterOperator_not(ctx *parser.Operator_notContext) {
l.results.negatedOperatorCount++
}

func (l *TreeShapeListener) EnterCol_name(ctx *parser.Col_nameContext) {
l.results.setvarCollections = append(l.results.setvarCollections, ctx.GetText())
}

func (l *TreeShapeListener) EnterSetvar_stmt(ctx *parser.Setvar_stmtContext) {
l.results.setvarNames = append(l.results.setvarNames, ctx.GetText())
}

func (l *TreeShapeListener) EnterAssignment(ctx *parser.AssignmentContext) {
l.results.setvarOperations = append(l.results.setvarOperations, ctx.GetText())
}

func (l *TreeShapeListener) EnterVar_assignment(ctx *parser.Var_assignmentContext) {
l.results.directiveValues = append(l.results.directiveValues, ctx.GetText())
}
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