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Add IsIPV4() and IsIP() helpers (#2050)

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blotus 2023-02-10 14:44:42 +01:00 • committed by GitHub
parent 0f5560b62a
commit 812b87ab48
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GPG key ID: 4AEE18F83AFDEB23
2 changed files with 102 additions and 11 deletions
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20
pkg/exprhelpers/exprlib.go
View file

@ -72,6 +72,8 @@ func GetExprEnv(ctx map[string]interface{}) map[string]interface{} {
"XMLGetNodeValue": XMLGetNodeValue,
"IpToRange": IpToRange,
"IsIPV6": IsIPV6,
"IsIPV4": IsIPV4,
"IsIP": IsIP,
"LookupHost": LookupHost,
"GetDecisionsCount": GetDecisionsCount,
"GetDecisionsSinceCount": GetDecisionsSinceCount,
@ -234,6 +236,24 @@ func IsIPV6(ip string) bool {
return ipParsed.To4() == nil
}
func IsIPV4(ip string) bool {
ipParsed := net.ParseIP(ip)
if ipParsed == nil {
log.Debugf("'%s' is not a valid IP", ip)
return false
}
return ipParsed.To4() != nil
}
func IsIP(ip string) bool {
ipParsed := net.ParseIP(ip)
if ipParsed == nil {
log.Debugf("'%s' is not a valid IP", ip)
return false
}
return true
}
func IpToRange(ip string, cidr string) string {
cidr = strings.TrimPrefix(cidr, "/")
mask, err := strconv.Atoi(cidr)

93
pkg/exprhelpers/exprlib_test.go
View file

@ -9,10 +9,10 @@ import (
"github.com/pkg/errors"
"github.com/crowdsecurity/crowdsec/pkg/csconfig"
"github.com/crowdsecurity/crowdsec/pkg/cstest"
"github.com/crowdsecurity/crowdsec/pkg/database"
"github.com/crowdsecurity/crowdsec/pkg/models"
"github.com/crowdsecurity/crowdsec/pkg/types"
"github.com/crowdsecurity/crowdsec/pkg/cstest"
log "github.com/sirupsen/logrus"
"testing"
@ -981,25 +981,25 @@ func TestParseUnixTime(t *testing.T) {
expectedErr string
}{
{
name: "ParseUnix() test: valid value with milli",
value: "1672239773.3590894",
name: "ParseUnix() test: valid value with milli",
value: "1672239773.3590894",
expected: time.Date(2022, 12, 28, 15, 02, 53, 0, time.UTC),
},
{
name: "ParseUnix() test: valid value without milli",
value: "1672239773",
name: "ParseUnix() test: valid value without milli",
value: "1672239773",
expected: time.Date(2022, 12, 28, 15, 02, 53, 0, time.UTC),
},
{
name: "ParseUnix() test: invalid input",
value: "AbcDefG!#",
expected: time.Time{},
name: "ParseUnix() test: invalid input",
value: "AbcDefG!#",
expected: time.Time{},
expectedErr: "unable to parse AbcDefG!# as unix timestamp",
},
{
name: "ParseUnix() test: negative value",
value: "-1000",
expected: time.Time{},
name: "ParseUnix() test: negative value",
value: "-1000",
expected: time.Time{},
expectedErr: "unable to parse -1000 as unix timestamp",
},
}
@ -1016,3 +1016,74 @@ func TestParseUnixTime(t *testing.T) {
})
}
}
func TestIsIp(t *testing.T) {
tests := []struct {
name string
method func(string) bool
value string
expected bool
}{
{
name: "IsIPV4() test: valid IPv4",
method: IsIPV4,
value: "1.2.3.4",
expected: true,
},
{
name: "IsIPV6() test: valid IPv6",
method: IsIPV6,
value: "1.2.3.4",
expected: false,
},
{
name: "IsIPV6() test: valid IPv6",
method: IsIPV6,
value: "2001:0db8:85a3:0000:0000:8a2e:0370:7334",
expected: true,
},
{
name: "IsIPV4() test: valid IPv6",
method: IsIPV4,
value: "2001:0db8:85a3:0000:0000:8a2e:0370:7334",
expected: false,
},
{
name: "IsIP() test: invalid IP",
method: IsIP,
value: "foo.bar",
expected: false,
},
{
name: "IsIP() test: valid IPv4",
method: IsIP,
value: "1.2.3.4",
expected: true,
},
{
name: "IsIP() test: valid IPv6",
method: IsIP,
value: "2001:0db8:85a3:0000:0000:8a2e:0370:7334",
expected: true,
},
{
name: "IsIPV4() test: invalid IPv4",
method: IsIPV4,
value: "foo.bar",
expected: false,
},
{
name: "IsIPV6() test: invalid IPv6",
method: IsIPV6,
value: "foo.bar",
expected: false,
},
}
for _, tc := range tests {
tc := tc
t.Run(tc.name, func(t *testing.T) {
output := tc.method(tc.value)
require.Equal(t, tc.expected, output)
})
}
}