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ipfilter_test.go
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ipfilter_test.go
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package ipfilter
import (
"bytes"
"fmt"
"net"
"net/http"
"net/http/httptest"
"reflect"
"testing"
"github.com/mholt/caddy"
"github.com/mholt/caddy/caddyhttp/httpserver"
"github.com/oschwald/maxminddb-golang"
)
const (
// 'GeoLite2.mmdb' taken from 'MaxMind.com'
// 'https://dev.maxmind.com/geoip/geoip2/geolite2/'
DataBase = "./testdata/GeoLite2.mmdb"
BlockPage = "./testdata/blockpage.html"
Allow = "allow"
Block = "block"
BlockMsg = "You are not allowed here"
)
func TestCountryCodes(t *testing.T) {
TestCases := []struct {
ipfconf IPFConfig
reqIP string
scope string
expectedBody string
expectedStatus int
}{
{IPFConfig{
Paths: []IPPath{
{
PathScopes: []string{"/"},
BlockPage: BlockPage,
IsBlock: false,
CountryCodes: []string{"JP", "SA"},
},
},
},
"8.8.8.8:_", // US
"/",
BlockMsg,
http.StatusOK,
},
{IPFConfig{
Paths: []IPPath{
{
PathScopes: []string{"/private"},
BlockPage: BlockPage,
IsBlock: true,
CountryCodes: []string{"US", "CA"},
},
},
},
"24.53.192.20:_", // CA
"/private",
BlockMsg,
http.StatusOK,
},
{IPFConfig{
Paths: []IPPath{
{
PathScopes: []string{"/testdata"},
IsBlock: true,
CountryCodes: []string{"RU", "CN"},
},
},
},
"42.48.120.7:_", // CN
"/",
"",
http.StatusOK, // pass-thru, out of scope
},
{IPFConfig{
Paths: []IPPath{
{
PathScopes: []string{"/"},
IsBlock: true,
CountryCodes: []string{"RU", "JP", "SA"},
},
},
},
"78.95.221.163:_", // SA
"/",
"",
http.StatusForbidden,
},
{IPFConfig{
Paths: []IPPath{
{
PathScopes: []string{"/onlyus"},
IsBlock: false,
CountryCodes: []string{"US"},
},
},
},
"5.175.96.22:_", // RU
"/onlyus",
"",
http.StatusForbidden,
},
{IPFConfig{
Paths: []IPPath{
{
PathScopes: []string{"/"},
IsBlock: false,
CountryCodes: []string{"FR", "GB", "AE", "DE"},
},
},
},
"5.4.9.3:_", // DE
"/",
"",
http.StatusOK, // Allowed
},
}
// open the db
db, err := maxminddb.Open(DataBase)
if err != nil {
t.Fatalf("Error opening the database: %v", err)
}
defer db.Close()
for _, tc := range TestCases {
ipf := IPFilter{
Next: httpserver.HandlerFunc(func(w http.ResponseWriter, r *http.Request) (int, error) {
return http.StatusOK, nil
}),
Config: tc.ipfconf,
}
// set the DBHandler
ipf.Config.DBHandler = db
req, err := http.NewRequest("GET", tc.scope, nil)
if err != nil {
t.Fatalf("Could not create HTTP request: %v", err)
}
req.RemoteAddr = tc.reqIP
rec := httptest.NewRecorder()
status, _ := ipf.ServeHTTP(rec, req)
if status != tc.expectedStatus {
t.Fatalf("Expected StatusCode: '%d', Got: '%d'\nTestCase: %v\n",
tc.expectedStatus, status, tc)
}
if rec.Body.String() != tc.expectedBody {
t.Fatalf("Expected Body: '%s', Got: '%s'\nTestCase: %v\n",
tc.expectedBody, rec.Body.String(), tc)
}
}
}
func TestRanges(t *testing.T) {
TestCases := []struct {
ipfconf IPFConfig
reqIP string
scope string
expectedBody string
expectedStatus int
}{
{IPFConfig{
Paths: []IPPath{
{
PathScopes: []string{"/"},
BlockPage: BlockPage,
IsBlock: true,
Ranges: []Range{
{
net.ParseIP("243.1.3.10"),
net.ParseIP("243.1.3.20"),
},
},
},
},
},
"243.1.3.15:_",
"/",
BlockMsg,
http.StatusOK,
},
{IPFConfig{
Paths: []IPPath{
{
PathScopes: []string{"/private"},
BlockPage: BlockPage,
IsBlock: true,
Ranges: []Range{
{
net.ParseIP("243.1.3.10"),
net.ParseIP("243.1.3.20"),
},
{
net.ParseIP("202.33.44.1"),
net.ParseIP("202.33.44.255"),
},
},
},
},
},
"202.33.44.224:_",
"/private",
BlockMsg,
http.StatusOK,
},
{IPFConfig{
Paths: []IPPath{
{
PathScopes: []string{"/"},
BlockPage: BlockPage,
IsBlock: true,
Ranges: []Range{
{
net.ParseIP("243.1.3.10"),
net.ParseIP("243.1.3.20"),
},
},
},
},
},
"243.1.3.9:_",
"/",
"",
http.StatusOK,
},
{IPFConfig{
Paths: []IPPath{
{
PathScopes: []string{"/eighties"},
BlockPage: BlockPage,
IsBlock: false,
Ranges: []Range{
{
net.ParseIP("243.1.3.10"),
net.ParseIP("243.1.3.20"),
},
{
net.ParseIP("80.0.0.0"),
net.ParseIP("80.255.255.255"),
},
},
},
},
},
"80.245.155.250:_",
"/eighties",
"",
http.StatusOK,
},
{IPFConfig{
Paths: []IPPath{
{
PathScopes: []string{"/eighties"},
IsBlock: true,
Ranges: []Range{
{
net.ParseIP("243.1.3.10"),
net.ParseIP("243.1.3.20"),
},
{
net.ParseIP("80.0.0.0"),
net.ParseIP("80.255.255.255"),
},
},
},
},
},
"80.245.155.250:_",
"/",
"",
http.StatusOK,
},
{IPFConfig{
Paths: []IPPath{
{
PathScopes: []string{"/"},
IsBlock: true,
Ranges: []Range{
{
net.ParseIP("243.1.3.10"),
net.ParseIP("243.1.3.20"),
},
{
net.ParseIP("80.0.0.0"),
net.ParseIP("80.255.255.255"),
},
{
net.ParseIP("23.1.3.1"),
net.ParseIP("23.1.3.20"),
},
{
net.ParseIP("85.0.0.0"),
net.ParseIP("85.255.255.255"),
},
},
},
},
},
"23.1.3.9:_",
"/",
"",
http.StatusForbidden,
},
// From here on out, tests are covering single IP ranges
{IPFConfig{
Paths: []IPPath{
{
PathScopes: []string{"/"},
BlockPage: BlockPage,
IsBlock: true,
Ranges: []Range{
{
net.ParseIP("8.8.8.8"),
net.ParseIP("8.8.8.8"),
},
},
},
},
},
"8.8.4.4:_",
"/",
"",
http.StatusOK,
},
{IPFConfig{
Paths: []IPPath{
{
PathScopes: []string{"/"},
BlockPage: BlockPage,
IsBlock: false,
Ranges: []Range{
{
net.ParseIP("8.8.8.8"),
net.ParseIP("8.8.8.8"),
},
},
},
},
},
"8.8.4.4:_",
"/",
BlockMsg,
http.StatusOK,
},
{IPFConfig{
Paths: []IPPath{
{
PathScopes: []string{"/private"},
BlockPage: BlockPage,
IsBlock: false,
Ranges: []Range{
{
net.ParseIP("52.9.1.2"),
net.ParseIP("52.9.1.2"),
},
{
net.ParseIP("52.9.1.3"),
net.ParseIP("52.9.1.3"),
},
{
net.ParseIP("52.9.1.4"),
net.ParseIP("52.9.1.4"),
},
},
},
},
},
"52.9.1.3:_",
"/private",
"",
http.StatusOK,
},
{IPFConfig{
Paths: []IPPath{
{
PathScopes: []string{"/private"},
BlockPage: BlockPage,
IsBlock: false,
Ranges: []Range{
{
net.ParseIP("99.1.8.8"),
net.ParseIP("99.1.8.8"),
},
},
},
},
},
"90.90.90.90:_",
"/",
"",
http.StatusOK,
},
{IPFConfig{
Paths: []IPPath{
{
PathScopes: []string{"/private"},
IsBlock: true,
Ranges: []Range{
{
net.ParseIP("52.9.1.2"),
net.ParseIP("52.9.1.2"),
},
{
net.ParseIP("52.9.1.3"),
net.ParseIP("52.9.1.3"),
},
{
net.ParseIP("52.9.1.4"),
net.ParseIP("52.9.1.4"),
},
},
},
},
},
"52.9.1.3:_",
"/private",
"",
http.StatusForbidden,
},
}
for _, tc := range TestCases {
ipf := IPFilter{
Next: httpserver.HandlerFunc(func(w http.ResponseWriter, r *http.Request) (int, error) {
return http.StatusOK, nil
}),
Config: tc.ipfconf,
}
req, err := http.NewRequest("GET", tc.scope, nil)
if err != nil {
t.Fatalf("Could not create HTTP request: %v", err)
}
req.RemoteAddr = tc.reqIP
rec := httptest.NewRecorder()
status, _ := ipf.ServeHTTP(rec, req)
if status != tc.expectedStatus {
t.Fatalf("Expected StatusCode: '%d', Got: '%d'\nTestCase: %v\n",
tc.expectedStatus, status, tc)
}
if rec.Body.String() != tc.expectedBody {
t.Fatalf("Expected Body: '%s', Got: '%s'\nTestCase: %v\n",
tc.expectedBody, rec.Body.String(), tc)
}
}
}
func TestFwdForIPs(t *testing.T) {
// These test cases provide test coverage for proxied requests support (Refer to https://github.com/pyed/ipfilter/pull/4)
TestCases := []struct {
ipfconf IPFConfig
reqIP string
fwdFor string
scope string
expectedStatus int
}{
// Middleware should block request when filtering rule is set to 'Block', a *blocked* IP is passed in the 'X-Forwarded-For' header and the request is coming from *permitted* remote address
{
IPFConfig{
Paths: []IPPath{
{
PathScopes: []string{"/"},
IsBlock: true,
Ranges: []Range{
{
net.ParseIP("8.8.8.8"),
net.ParseIP("8.8.8.8"),
},
},
},
},
},
"8.8.4.4:12345",
"8.8.8.8",
"/",
http.StatusForbidden,
},
// Middleware should allow request when filtering rule is set to 'Block', no IP is passed in the 'X-Forwarded-For' header and the request is coming from *permitted* remote address
{
IPFConfig{
Paths: []IPPath{
{
PathScopes: []string{"/"},
IsBlock: true,
Ranges: []Range{
{
net.ParseIP("8.8.8.8"),
net.ParseIP("8.8.8.8"),
},
},
},
},
},
"8.8.4.4:12345",
"",
"/",
http.StatusOK,
},
// Middleware should allow request when filtering rule is set to 'Block', a *permitted* IP is passed in the 'X-Forwarded-For' header and the request is coming from *blocked* remote address
{
IPFConfig{
Paths: []IPPath{
{
PathScopes: []string{"/"},
IsBlock: true,
Ranges: []Range{
{
net.ParseIP("8.8.8.8"),
net.ParseIP("8.8.8.8"),
},
},
},
},
},
"8.8.8.8:12345",
"8.8.4.4",
"/",
http.StatusOK,
},
// Middleware should allow request when filtering rule is set to 'Allow', a *permitted* IP is passed in the 'X-Forwarded-For' header and the request is coming from *blocked* remote address
{
IPFConfig{
Paths: []IPPath{
{
PathScopes: []string{"/"},
IsBlock: false,
Ranges: []Range{
{
net.ParseIP("8.8.8.8"),
net.ParseIP("8.8.8.8"),
},
},
},
},
},
"8.8.4.4:12345",
"8.8.8.8",
"/",
http.StatusOK,
},
// Middleware should block request when filtering rule is set to 'Allow', no IP is passed in the 'X-Forwarded-For' header and the request is coming from *blocked* remote address
{
IPFConfig{
Paths: []IPPath{
{
PathScopes: []string{"/"},
IsBlock: false,
Ranges: []Range{
{
net.ParseIP("8.8.8.8"),
net.ParseIP("8.8.8.8"),
},
},
},
},
},
"8.8.4.4:12345",
"",
"/",
http.StatusForbidden,
},
// Middleware should block request when filtering rule is set to 'Allow', a *blocked* IP is passed in the 'X-Forwarded-For' header and the request is coming from *permitted* remote address
{
IPFConfig{
Paths: []IPPath{
{
PathScopes: []string{"/"},
IsBlock: false,
Ranges: []Range{
{
net.ParseIP("8.8.8.8"),
net.ParseIP("8.8.8.8"),
},
},
},
},
},
"8.8.8.8:12345",
"8.8.4.4",
"/",
http.StatusForbidden,
},
}
for _, tc := range TestCases {
ipf := IPFilter{
Next: httpserver.HandlerFunc(func(w http.ResponseWriter, r *http.Request) (int, error) {
return http.StatusOK, nil
}),
Config: tc.ipfconf,
}
req, err := http.NewRequest("GET", tc.scope, nil)
if err != nil {
t.Fatalf("Could not create HTTP request: %v", err)
}
req.RemoteAddr = tc.reqIP
if tc.fwdFor != "" {
req.Header.Set("X-Forwarded-For", tc.fwdFor)
}
rec := httptest.NewRecorder()
status, _ := ipf.ServeHTTP(rec, req)
if status != tc.expectedStatus {
t.Fatalf("Expected StatusCode: '%d', Got: '%d'\nTestCase: %v\n",
tc.expectedStatus, status, tc)
}
}
}
func TestStrict(t *testing.T) {
TestCases := []struct {
ipfconf IPFConfig
reqIP string
fwdFor string
scope string
expectedStatus int
}{
{
IPFConfig{
Paths: []IPPath{
{
PathScopes: []string{"/"},
IsBlock: true,
Ranges: []Range{
{
net.ParseIP("8.8.8.8"),
net.ParseIP("8.8.8.8"),
},
},
Strict: true,
},
},
},
"8.8.4.4:12345",
"8.8.8.8",
"/",
http.StatusOK,
},
{
IPFConfig{
Paths: []IPPath{
{
PathScopes: []string{"/"},
IsBlock: true,
Ranges: []Range{
{
net.ParseIP("8.8.8.8"),
net.ParseIP("8.8.8.8"),
},
},
Strict: true,
},
},
},
"8.8.8.8:12345",
"8.8.8.8",
"/",
http.StatusForbidden,
},
{
IPFConfig{
Paths: []IPPath{
{
PathScopes: []string{"/"},
IsBlock: true,
Ranges: []Range{
{
net.ParseIP("8.8.8.8"),
net.ParseIP("8.8.8.8"),
},
},
Strict: false,
},
},
},
"8.8.4.4:12345",
"8.8.8.8",
"/",
http.StatusForbidden,
},
}
for _, tc := range TestCases {
ipf := IPFilter{
Next: httpserver.HandlerFunc(func(w http.ResponseWriter, r *http.Request) (int, error) {
return http.StatusOK, nil
}),
Config: tc.ipfconf,
}
req, err := http.NewRequest("GET", tc.scope, nil)
if err != nil {
t.Fatalf("Could not create HTTP request: %v", err)
}
req.RemoteAddr = tc.reqIP
if tc.fwdFor != "" {
req.Header.Set("X-Forwarded-For", tc.fwdFor)
}
rec := httptest.NewRecorder()
status, _ := ipf.ServeHTTP(rec, req)
if status != tc.expectedStatus {
t.Fatalf("Expected StatusCode: '%d', Got: '%d'\nTestCase: %v\n",
tc.expectedStatus, status, tc)
}
}
}
func TestIpfilterParseSingle(t *testing.T) {
tests := []struct {
inputIpfilterConfig string
shouldErr bool
expectedPath IPPath
DBHandler *maxminddb.Reader
}{
{`/ {
rule allow
ip 10.0.0.1
}`, false, IPPath{
PathScopes: []string{"/"},
IsBlock: false,
Ranges: []Range{
{net.ParseIP("10.0.0.1"), net.ParseIP("10.0.0.1")},
},
}, nil,
},
{fmt.Sprintf(`/blog /local {
rule block
ip 10.0.0.1-150 20.0.0.1-255 30.0.0.2
blockpage %s
}`, BlockPage), false, IPPath{
PathScopes: []string{"/local", "/blog"},
IsBlock: true,
BlockPage: BlockPage,
Ranges: []Range{
{net.ParseIP("10.0.0.1"), net.ParseIP("10.0.0.150")},
{net.ParseIP("20.0.0.1"), net.ParseIP("20.0.0.255")},
{net.ParseIP("30.0.0.2"), net.ParseIP("30.0.0.2")},
},
}, nil,
},
{`/ {
rule allow
ip 192.168 10.0.0.20-25 8.8.4.4 182 0
}`, false, IPPath{
PathScopes: []string{"/"},
IsBlock: false,
Ranges: []Range{
{net.ParseIP("192.168.0.0"), net.ParseIP("192.168.255.255")},
{net.ParseIP("10.0.0.20"), net.ParseIP("10.0.0.25")},
{net.ParseIP("8.8.4.4"), net.ParseIP("8.8.4.4")},
{net.ParseIP("182.0.0.0"), net.ParseIP("182.255.255.255")},
{net.ParseIP("0.0.0.0"), net.ParseIP("0.255.255.255")},
},
}, nil,
},
{fmt.Sprintf(`/private /blog /local {
rule block
ip 11.10.12 192.168.8.4-50 20.20.20.20 255 8.8.8.8
country US JP RU FR
database %s
blockpage %s
}`, DataBase, BlockPage), false, IPPath{
PathScopes: []string{"/private", "/local", "/blog"},
IsBlock: true,
BlockPage: BlockPage,
CountryCodes: []string{"US", "JP", "RU", "FR"},
Ranges: []Range{
{net.ParseIP("11.10.12.0"), net.ParseIP("11.10.12.255")},
{net.ParseIP("192.168.8.4"), net.ParseIP("192.168.8.50")},
{net.ParseIP("20.20.20.20"), net.ParseIP("20.20.20.20")},
{net.ParseIP("255.0.0.0"), net.ParseIP("255.255.255.255")},
{net.ParseIP("8.8.8.8"), net.ParseIP("8.8.8.8")},
},
}, &maxminddb.Reader{},
},
{fmt.Sprintf(`/private /blog /local /contact {
rule block
ip 11.10.12 192.168.8.4-50 20.20.20.20 255 8.8.8.8
country US JP RU FR
database %s
blockpage %s
}`, DataBase, BlockPage), false, IPPath{
PathScopes: []string{"/private", "/contact", "/local", "/blog"},
IsBlock: true,
BlockPage: BlockPage,
CountryCodes: []string{"US", "JP", "RU", "FR"},
Ranges: []Range{
{net.ParseIP("11.10.12.0"), net.ParseIP("11.10.12.255")},
{net.ParseIP("192.168.8.4"), net.ParseIP("192.168.8.50")},
{net.ParseIP("20.20.20.20"), net.ParseIP("20.20.20.20")},
{net.ParseIP("255.0.0.0"), net.ParseIP("255.255.255.255")},
{net.ParseIP("8.8.8.8"), net.ParseIP("8.8.8.8")},
},
}, &maxminddb.Reader{},
},
{`/ {
rule allow
ip 11.
}`, true, IPPath{
PathScopes: []string{"/"},
IsBlock: false,
}, nil,
},
{`/ {
rule allow
ip 192.168.1.10-
}`, true, IPPath{
PathScopes: []string{"/"},
IsBlock: false,
}, nil,
},
{`/ {
rule allow
ip 192.168.1.10- 20.20.20.20
}`, true, IPPath{
PathScopes: []string{"/"},
IsBlock: false,
}, nil,
},
}
for i, test := range tests {
c := caddy.NewTestController("http", test.inputIpfilterConfig)
actualConfig := IPFConfig{[]IPPath{test.expectedPath}, nil}
actualPath, err := ipfilterParseSingle(&actualConfig, c)
if err == nil && test.shouldErr {
t.Errorf("Test %d didn't error, but it should have", i)
} else if err != nil && !test.shouldErr {
t.Errorf("Test %d errored, but it shouldn't have; got: '%v'", i, err)
}
// PathScopes
if !reflect.DeepEqual(actualPath.PathScopes, test.expectedPath.PathScopes) {
t.Errorf("Test %d expected 'PathScopes': %v got: %v",
i, test.expectedPath.PathScopes, actualPath.PathScopes)
}
// Rule
if actualPath.IsBlock != test.expectedPath.IsBlock {
t.Errorf("Test %d expected 'IsBlock': %t, got: %t",
i, test.expectedPath.IsBlock, actualPath.IsBlock)
}
// BlockPage
if actualPath.BlockPage != test.expectedPath.BlockPage {
t.Errorf("Test %d expected 'BlockPage': %s got: %s",
i, test.expectedPath.BlockPage, actualPath.BlockPage)
}
// CountryCodes
if !reflect.DeepEqual(actualPath.CountryCodes, test.expectedPath.CountryCodes) {
t.Errorf("Test %d expected 'CountryCodes': %v got: %v",
i, test.expectedPath.CountryCodes, actualPath.CountryCodes)
}
// Ranges
if !reflect.DeepEqual(actualPath.Ranges, test.expectedPath.Ranges) {
t.Errorf("Test %d expected 'Ranges': %s\ngot: %s",
i, prettyPrintRanges(test.expectedPath.Ranges), prettyPrintRanges(actualPath.Ranges))
}
// DBHandler
if actualConfig.DBHandler == nil && test.DBHandler != nil {
t.Errorf("Test %d expected 'DBHandler' to NOT be a nil, got a non-nil", i)
}
if actualConfig.DBHandler != nil && test.DBHandler == nil {
t.Errorf("Test %d expected 'DBHandler' to be nil, it is not", i)
}
}
}
func TestMultipleIpFilters(t *testing.T) {
TestCases := []struct {
inputIpfilterConfig string
shouldErr bool
reqIP string
reqPath string
expectedStatus int
}{
{
`ipfilter / {
rule block
ip 192.168.1.10
}
ipfilter /allowed {
rule allow
ip 192.168.1.10
}`, false, "192.168.1.10:12345", "/", http.StatusForbidden,
},
{
`ipfilter / {
rule block
ip 192.168.1.10
}
ipfilter /allowed {
rule allow
ip 192.168.1.10
}`, false, "192.168.1.10:12345", "/allowed", http.StatusOK,
},
{
`ipfilter / {
rule block
ip 192.168.1.10
}
ipfilter /allowed {
rule allow
ip 192.168.1.10
}`, false, "212.168.23.13:12345", "/", http.StatusOK,
},
{
`ipfilter / {
rule block
ip 192.168.1.10
}
ipfilter /allowed {
rule allow
ip 192.168.1.10
}`, false, "212.168.23.13:12345", "/allowed", http.StatusForbidden,
},
{
fmt.Sprintf(`ipfilter / {
rule allow
ip 192.168.1.10
}
ipfilter /allowed {
rule allow
country US
database %s
}`, DataBase), false, "8.8.8.8:12345", "/allowed", http.StatusOK,
},
{
fmt.Sprintf(`ipfilter /local {
rule allow
ip 192.168.1
}
ipfilter /private {
rule allow
ip 192.168.1.10-15
}
ipfilter /notglobal /secret {
rule block
country RU
database %s
}
ipfilter / {
rule allow
ip 212.222.222.1
}`, DataBase), false, "192.168.1.9:12345", "/private", http.StatusForbidden,
},
{
fmt.Sprintf(`ipfilter /local {
rule allow
ip 192.168.1
}
ipfilter /private {
rule allow
ip 192.168.1.10-15
}
ipfilter /notglobal /secret {
rule block
country RU
database %s
}
ipfilter / {