diff options
Diffstat (limited to 'packet/bgp.go')
| -rw-r--r-- | packet/bgp.go | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/packet/bgp.go b/packet/bgp.go index 01de6a62..c3e3c045 100644 --- a/packet/bgp.go +++ b/packet/bgp.go @@ -1959,7 +1959,7 @@ func flowSpecTcpFlagParser(args []string) (FlowSpecComponentInterface, error) { } func flowSpecNumericParser(args []string) (FlowSpecComponentInterface, error) { - exp := regexp.MustCompile("^((<=|>=|[<>=])(\\d+)&)?(<=|>=|[<>=])(\\d+)$") + exp := regexp.MustCompile("^((<=|>=|[<>=])(\\d+)&)?(<=|>=|[<>=])?(\\d+)$") items := make([]*FlowSpecComponentItem, 0) f := func(and bool, o, v string) *FlowSpecComponentItem { @@ -1967,6 +1967,9 @@ func flowSpecNumericParser(args []string) (FlowSpecComponentInterface, error) { if and { op |= 0x40 } + if len(o) == 0 { + op |= 0x1 + } for _, oo := range o { switch oo { case '>': @@ -1987,6 +1990,9 @@ func flowSpecNumericParser(args []string) (FlowSpecComponentInterface, error) { for _, arg := range args[1:] { var and bool elems := exp.FindStringSubmatch(arg) + if len(elems) == 0 { + return nil, fmt.Errorf("invalid flowspec numeric item") + } if elems[1] != "" { and = true items = append(items, f(false, elems[2], elems[3])) |