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[fixed] two minor configuration lexer issues found by oss-fuzz

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after eof isVariable had a buffer overflow
stringStateFn was not set when lexString was returned

Signed-off-by: Matthias Hanel <mh@synadia.com>
This commit is contained in:
Matthias Hanel
2021-01-05 18:25:41 -05:00
parent de1e492858
commit 32b5a16d97
1 changed files with 4 additions and 0 deletions
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4
conf/lex.go
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@@ -783,6 +783,9 @@ func (lx *lexer) isBool() bool {
// Check if the unquoted string is a variable reference, starting with $. // Check if the unquoted string is a variable reference, starting with $.
func (lx *lexer) isVariable() bool { func (lx *lexer) isVariable() bool {
if lx.start >= len(lx.input) {
return false
}
if lx.input[lx.start] == '$' { if lx.input[lx.start] == '$' {
lx.start += 1 lx.start += 1
return true return true
@@ -984,6 +987,7 @@ func lexNumberOrDateOrStringOrIP(lx *lexer) stateFn {
case !(isNL(r) || r == eof || r == mapEnd || r == optValTerm || r == mapValTerm || isWhitespace(r) || unicode.IsDigit(r)): case !(isNL(r) || r == eof || r == mapEnd || r == optValTerm || r == mapValTerm || isWhitespace(r) || unicode.IsDigit(r)):
// Treat it as a string value once we get a rune that // Treat it as a string value once we get a rune that
// is not a number. // is not a number.
lx.stringStateFn = lexString
return lexString return lexString
} }
lx.backup() lx.backup()