Merge pull request #125 from adnanh/development

webhook 2.6.3

README.md

@@ -1,4 +1,12 @@
 [![ghit.me](https://ghit.me/badge.svg?repo=adnanh/webhook)](https://ghit.me/repo/adnanh/webhook) [![Join the chat at https://gitter.im/adnanh/webhook](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/adnanh/webhook?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge) [![Flattr this](https://button.flattr.com/flattr-badge-large.png)](https://flattr.com/submit/auto?user_id=adnanh&url=https%3A%2F%2Fwww.github.com%2Fadnanh%2Fwebhook) [Donate via PayPal](https://paypal.me/hookdoo) | [Patreon page](https://www.patreon.com/webhook)
+
+
+# Hookdoo
+<a href="https://www.hookdoo.com/?github"><img src="https://my.hookdoo.com/logo/logo-dark-96.png" alt="hookdoo" align="left" /></a>
+ 
+If you don't have time to waste configuring, hosting, debugging and maintaining your webhook instance, we offer a __SaaS__ solution that has all of the capabilities webhook provides, plus a lot more, and all that packaged in a nice friendly web interface. If you are interested, find out more at [hookdoo website](https://www.hookdoo.com/). If you have any questions, you can contact us at info@hookdoo.com
+
+
 # What is webhook?
 [webhook](https://github.com/adnanh/webhook/) is a lightweight configurable tool written in Go, that allows you to easily create HTTP endpoints (hooks) on your server, which you can use to execute configured commands. You can also pass data from the HTTP request (such as headers, payload or query variables) to your commands. [webhook](https://github.com/adnanh/webhook/) also allows you to specify rules which have to be satisfied in order for the hook to be triggered.
 

hook/hook.go

@@ -3,11 +3,13 @@ package hook
 import (
 	"crypto/hmac"
 	"crypto/sha1"
+	"crypto/sha256"
 	"encoding/hex"
 	"encoding/json"
 	"errors"
 	"fmt"
 	"io/ioutil"
+	"net"
 	"net/textproto"
 	"reflect"
 	"regexp"
@@ -100,6 +102,67 @@ func CheckPayloadSignature(payload []byte, secret string, signature string) (str
 	return expectedMAC, err
 }
 
+// CheckPayloadSignature256 calculates and verifies SHA256 signature of the given payload
+func CheckPayloadSignature256(payload []byte, secret string, signature string) (string, error) {
+	if strings.HasPrefix(signature, "sha256=") {
+		signature = signature[7:]
+	}
+
+	mac := hmac.New(sha256.New, []byte(secret))
+	_, err := mac.Write(payload)
+	if err != nil {
+		return "", err
+	}
+	expectedMAC := hex.EncodeToString(mac.Sum(nil))
+
+	if !hmac.Equal([]byte(signature), []byte(expectedMAC)) {
+		return expectedMAC, &SignatureError{signature}
+	}
+	return expectedMAC, err
+}
+
+// CheckIPWhitelist makes sure the provided remote address (of the form IP:port) falls within the provided IP range
+// (in CIDR form or a single IP address).
+func CheckIPWhitelist(remoteAddr string, ipRange string) (bool, error) {
+	// Extract IP address from remote address.
+
+	ip := remoteAddr
+
+	if strings.LastIndex(remoteAddr, ":") != -1 {
+		ip = remoteAddr[0:strings.LastIndex(remoteAddr, ":")]
+	}
+
+	ip = strings.TrimSpace(ip)
+
+	// IPv6 addresses will likely be surrounded by [], so don't forget to remove those.
+
+	if strings.HasPrefix(ip, "[") && strings.HasSuffix(ip, "]") {
+		ip = ip[1 : len(ip)-1]
+	}
+
+	parsedIP := net.ParseIP(strings.TrimSpace(ip))
+
+	if parsedIP == nil {
+		return false, fmt.Errorf("invalid IP address found in remote address '%s'", remoteAddr)
+	}
+
+	// Extract IP range in CIDR form.  If a single IP address is provided, turn it into CIDR form.
+
+	ipRange = strings.TrimSpace(ipRange)
+
+	if strings.Index(ipRange, "/") == -1 {
+		ipRange = ipRange + "/32"
+	}
+
+	_, cidr, err := net.ParseCIDR(ipRange)
+
+	if err != nil {
+		return false, err
+	}
+
+	return cidr.Contains(parsedIP), nil
+}
+
 // ReplaceParameter replaces parameter value with the passed value in the passed map
 // (please note you should pass pointer to the map, because we're modifying it)
 // based on the passed string
@@ -479,16 +542,16 @@ type Rules struct {
 
 // Evaluate finds the first rule property that is not nil and returns the value
 // it evaluates to
-func (r Rules) Evaluate(headers, query, payload *map[string]interface{}, body *[]byte) (bool, error) {
+func (r Rules) Evaluate(headers, query, payload *map[string]interface{}, body *[]byte, remoteAddr string) (bool, error) {
 	switch {
 	case r.And != nil:
-		return r.And.Evaluate(headers, query, payload, body)
+		return r.And.Evaluate(headers, query, payload, body, remoteAddr)
 	case r.Or != nil:
-		return r.Or.Evaluate(headers, query, payload, body)
+		return r.Or.Evaluate(headers, query, payload, body, remoteAddr)
 	case r.Not != nil:
-		return r.Not.Evaluate(headers, query, payload, body)
+		return r.Not.Evaluate(headers, query, payload, body, remoteAddr)
 	case r.Match != nil:
-		return r.Match.Evaluate(headers, query, payload, body)
+		return r.Match.Evaluate(headers, query, payload, body, remoteAddr)
 	}
 
 	return false, nil
@@ -498,11 +561,11 @@ func (r Rules) Evaluate(headers, query, payload *map[string]interface{}, body *[
 type AndRule []Rules
 
 // Evaluate AndRule will return true if and only if all of ChildRules evaluate to true
-func (r AndRule) Evaluate(headers, query, payload *map[string]interface{}, body *[]byte) (bool, error) {
+func (r AndRule) Evaluate(headers, query, payload *map[string]interface{}, body *[]byte, remoteAddr string) (bool, error) {
 	res := true
 
 	for _, v := range r {
-		rv, err := v.Evaluate(headers, query, payload, body)
+		rv, err := v.Evaluate(headers, query, payload, body, remoteAddr)
 		if err != nil {
 			return false, err
 		}
@@ -520,11 +583,11 @@ func (r AndRule) Evaluate(headers, query, payload *map[string]interface{}, body
 type OrRule []Rules
 
 // Evaluate OrRule will return true if any of ChildRules evaluate to true
-func (r OrRule) Evaluate(headers, query, payload *map[string]interface{}, body *[]byte) (bool, error) {
+func (r OrRule) Evaluate(headers, query, payload *map[string]interface{}, body *[]byte, remoteAddr string) (bool, error) {
 	res := false
 
 	for _, v := range r {
-		rv, err := v.Evaluate(headers, query, payload, body)
+		rv, err := v.Evaluate(headers, query, payload, body, remoteAddr)
 		if err != nil {
 			return false, err
 		}
@@ -542,8 +605,8 @@ func (r OrRule) Evaluate(headers, query, payload *map[string]interface{}, body *
 type NotRule Rules
 
 // Evaluate NotRule will return true if and only if ChildRule evaluates to false
-func (r NotRule) Evaluate(headers, query, payload *map[string]interface{}, body *[]byte) (bool, error) {
+func (r NotRule) Evaluate(headers, query, payload *map[string]interface{}, body *[]byte, remoteAddr string) (bool, error) {
-	rv, err := Rules(r).Evaluate(headers, query, payload, body)
+	rv, err := Rules(r).Evaluate(headers, query, payload, body, remoteAddr)
 	return !rv, err
 }
 
@@ -554,6 +617,7 @@ type MatchRule struct {
 	Secret    string   `json:"secret,omitempty"`
 	Value     string   `json:"value,omitempty"`
 	Parameter Argument `json:"parameter,omitempty"`
+	IPRange   string   `json:"ip-range,omitempty"`
 }
 
 // Constants for the MatchRule type
@@ -561,10 +625,16 @@ const (
 	MatchValue      string = "value"
 	MatchRegex      string = "regex"
 	MatchHashSHA1   string = "payload-hash-sha1"
+	MatchHashSHA256 string = "payload-hash-sha256"
+	IPWhitelist     string = "ip-whitelist"
 )
 
 // Evaluate MatchRule will return based on the type
-func (r MatchRule) Evaluate(headers, query, payload *map[string]interface{}, body *[]byte) (bool, error) {
+func (r MatchRule) Evaluate(headers, query, payload *map[string]interface{}, body *[]byte, remoteAddr string) (bool, error) {
+	if r.Type == IPWhitelist {
+		return CheckIPWhitelist(remoteAddr, r.IPRange)
+	}
+
 	if arg, ok := r.Parameter.Get(headers, query, payload); ok {
 		switch r.Type {
 		case MatchValue:
@@ -574,6 +644,9 @@ func (r MatchRule) Evaluate(headers, query, payload *map[string]interface{}, bod
 		case MatchHashSHA1:
 			_, err := CheckPayloadSignature(*body, r.Secret, arg)
 			return err == nil, err
+		case MatchHashSHA256:
+			_, err := CheckPayloadSignature256(*body, r.Secret, arg)
+			return err == nil, err
 		}
 	}
 	return false, nil

hook/hook_test.go

@@ -33,6 +33,32 @@ func TestCheckPayloadSignature(t *testing.T) {
 	}
 }
 
+var checkPayloadSignature256Tests = []struct {
+	payload   []byte
+	secret    string
+	signature string
+	mac       string
+	ok        bool
+}{
+	{[]byte(`{"a": "z"}`), "secret", "f417af3a21bd70379b5796d5f013915e7029f62c580fb0f500f59a35a6f04c89", "f417af3a21bd70379b5796d5f013915e7029f62c580fb0f500f59a35a6f04c89", true},
+	{[]byte(`{"a": "z"}`), "secret", "sha256=f417af3a21bd70379b5796d5f013915e7029f62c580fb0f500f59a35a6f04c89", "f417af3a21bd70379b5796d5f013915e7029f62c580fb0f500f59a35a6f04c89", true},
+	// failures
+	{[]byte(`{"a": "z"}`), "secret", "XXX7af3a21bd70379b5796d5f013915e7029f62c580fb0f500f59a35a6f04c89", "f417af3a21bd70379b5796d5f013915e7029f62c580fb0f500f59a35a6f04c89", false},
+}
+
+func TestCheckPayloadSignature256(t *testing.T) {
+	for _, tt := range checkPayloadSignature256Tests {
+		mac, err := CheckPayloadSignature256(tt.payload, tt.secret, tt.signature)
+		if (err == nil) != tt.ok || mac != tt.mac {
+			t.Errorf("failed to check payload signature {%q, %q, %q}:\nexpected {mac:%#v, ok:%#v},\ngot {mac:%#v, ok:%#v}", tt.payload, tt.secret, tt.signature, tt.mac, tt.ok, mac, (err == nil))
+		}
+
+		if err != nil && strings.Contains(err.Error(), tt.mac) {
+			t.Errorf("error message should not disclose expected mac: %s", err)
+		}
+	}
+}
+
 var extractParameterTests = []struct {
 	s      string
 	params interface{}
@@ -241,29 +267,45 @@ func TestHooksMatch(t *testing.T) {
 }
 
 var matchRuleTests = []struct {
-	typ, regex, secret, value string
+	typ, regex, secret, value, ipRange string
 	param                              Argument
 	headers, query, payload            *map[string]interface{}
 	body                               []byte
+	remoteAddr                         string
 	ok                                 bool
 	err                                bool
 }{
 	{"value", "", "", "z", Argument{"header", "a", ""}, &map[string]interface{}{"A": "z"}, nil, nil, []byte{}, true, false},
 	{"regex", "^z", "", "z", Argument{"header", "a", ""}, &map[string]interface{}{"A": "z"}, nil, nil, []byte{}, true, false},
 	{"payload-hash-sha1", "", "secret", "", Argument{"header", "a", ""}, &map[string]interface{}{"A": "b17e04cbb22afa8ffbff8796fc1894ed27badd9e"}, nil, nil, []byte(`{"a": "z"}`), true, false},
+	{"payload-hash-sha256", "", "secret", "", Argument{"header", "a", ""}, &map[string]interface{}{"A": "f417af3a21bd70379b5796d5f013915e7029f62c580fb0f500f59a35a6f04c89"}, nil, nil, []byte(`{"a": "z"}`), true, false},
 	// failures
-	{"value", "", "", "X", Argument{"header", "a", ""}, &map[string]interface{}{"A": "z"}, nil, nil, []byte{}, false, false},
+	{"value", "", "", "X", "", Argument{"header", "a", ""}, &map[string]interface{}{"A": "z"}, nil, nil, []byte{}, "", false, false},
-	{"regex", "^X", "", "", Argument{"header", "a", ""}, &map[string]interface{}{"A": "z"}, nil, nil, []byte{}, false, false},
+	{"regex", "^X", "", "", "", Argument{"header", "a", ""}, &map[string]interface{}{"A": "z"}, nil, nil, []byte{}, "", false, false},
-	{"value", "", "2", "X", Argument{"header", "a", ""}, &map[string]interface{}{"Y": "z"}, nil, nil, []byte{}, false, false}, // reference invalid header
+	{"value", "", "2", "X", "", Argument{"header", "a", ""}, &map[string]interface{}{"Y": "z"}, nil, nil, []byte{}, "", false, false}, // reference invalid header
 	// errors
-	{"regex", "*", "", "", Argument{"header", "a", ""}, &map[string]interface{}{"A": "z"}, nil, nil, []byte{}, false, true},                 // invalid regex
+	{"regex", "*", "", "", "", Argument{"header", "a", ""}, &map[string]interface{}{"A": "z"}, nil, nil, []byte{}, "", false, true},                 // invalid regex
-	{"payload-hash-sha1", "", "secret", "", Argument{"header", "a", ""}, &map[string]interface{}{"A": ""}, nil, nil, []byte{}, false, true}, // invalid hmac
+	{"payload-hash-sha1", "", "secret", "", "", Argument{"header", "a", ""}, &map[string]interface{}{"A": ""}, nil, nil, []byte{}, "", false, true}, // invalid hmac
+	{"payload-hash-sha256", "", "secret", "", Argument{"header", "a", ""}, &map[string]interface{}{"A": ""}, nil, nil, []byte{}, false, true},       // invalid hmac
+	// IP whitelisting, valid cases
+	{"ip-whitelist", "", "", "", "192.168.0.1/24", Argument{}, nil, nil, nil, []byte{}, "192.168.0.2:9000", true, false}, // valid IPv4, with range
+	{"ip-whitelist", "", "", "", "192.168.0.1/24", Argument{}, nil, nil, nil, []byte{}, "192.168.0.2:9000", true, false}, // valid IPv4, with range
+	{"ip-whitelist", "", "", "", "192.168.0.1", Argument{}, nil, nil, nil, []byte{}, "192.168.0.1:9000", true, false},    // valid IPv4, no range
+	{"ip-whitelist", "", "", "", "::1/24", Argument{}, nil, nil, nil, []byte{}, "[::1]:9000", true, false},               // valid IPv6, with range
+	{"ip-whitelist", "", "", "", "::1", Argument{}, nil, nil, nil, []byte{}, "[::1]:9000", true, false},                  // valid IPv6, no range
+	// IP whitelisting, invalid cases
+	{"ip-whitelist", "", "", "", "192.168.0.1/a", Argument{}, nil, nil, nil, []byte{}, "192.168.0.2:9000", false, true},  // invalid IPv4, with range
+	{"ip-whitelist", "", "", "", "192.168.0.a", Argument{}, nil, nil, nil, []byte{}, "192.168.0.2:9000", false, true},    // invalid IPv4, no range
+	{"ip-whitelist", "", "", "", "192.168.0.1/24", Argument{}, nil, nil, nil, []byte{}, "192.168.0.a:9000", false, true}, // invalid IPv4 address
+	{"ip-whitelist", "", "", "", "::1/a", Argument{}, nil, nil, nil, []byte{}, "[::1]:9000", false, true},                // invalid IPv6, with range
+	{"ip-whitelist", "", "", "", "::z", Argument{}, nil, nil, nil, []byte{}, "[::1]:9000", false, true},                  // invalid IPv6, no range
+	{"ip-whitelist", "", "", "", "::1/24", Argument{}, nil, nil, nil, []byte{}, "[::z]:9000", false, true},               // invalid IPv6 address
 }
 
 func TestMatchRule(t *testing.T) {
 	for i, tt := range matchRuleTests {
-		r := MatchRule{tt.typ, tt.regex, tt.secret, tt.value, tt.param}
+		r := MatchRule{tt.typ, tt.regex, tt.secret, tt.value, tt.param, tt.ipRange}
-		ok, err := r.Evaluate(tt.headers, tt.query, tt.payload, &tt.body)
+		ok, err := r.Evaluate(tt.headers, tt.query, tt.payload, &tt.body, tt.remoteAddr)
 		if ok != tt.ok || (err != nil) != tt.err {
 			t.Errorf("%d failed to match %#v:\nexpected ok: %#v, err: %v\ngot ok: %#v, err: %v", i, r, tt.ok, tt.err, ok, (err != nil))
 		}
@@ -281,8 +323,8 @@ var andRuleTests = []struct {
 	{
 		"(a=z, b=y): a=z && b=y",
 		AndRule{
-			{Match: &MatchRule{"value", "", "", "z", Argument{"header", "a", ""}}},
+			{Match: &MatchRule{"value", "", "", "z", Argument{"header", "a", ""}, ""}},
-			{Match: &MatchRule{"value", "", "", "y", Argument{"header", "b", ""}}},
+			{Match: &MatchRule{"value", "", "", "y", Argument{"header", "b", ""}, ""}},
 		},
 		&map[string]interface{}{"A": "z", "B": "y"}, nil, nil, []byte{},
 		true, false,
@@ -290,8 +332,8 @@ var andRuleTests = []struct {
 	{
 		"(a=z, b=Y): a=z && b=y",
 		AndRule{
-			{Match: &MatchRule{"value", "", "", "z", Argument{"header", "a", ""}}},
+			{Match: &MatchRule{"value", "", "", "z", Argument{"header", "a", ""}, ""}},
-			{Match: &MatchRule{"value", "", "", "y", Argument{"header", "b", ""}}},
+			{Match: &MatchRule{"value", "", "", "y", Argument{"header", "b", ""}, ""}},
 		},
 		&map[string]interface{}{"A": "z", "B": "Y"}, nil, nil, []byte{},
 		false, false,
@@ -300,22 +342,22 @@ var andRuleTests = []struct {
 	{
 		"(a=z, b=y, c=x, d=w=, e=X, f=X): a=z && (b=y && c=x) && (d=w || e=v) && !f=u",
 		AndRule{
-			{Match: &MatchRule{"value", "", "", "z", Argument{"header", "a", ""}}},
+			{Match: &MatchRule{"value", "", "", "z", Argument{"header", "a", ""}, ""}},
 			{
 				And: &AndRule{
-					{Match: &MatchRule{"value", "", "", "y", Argument{"header", "b", ""}}},
+					{Match: &MatchRule{"value", "", "", "y", Argument{"header", "b", ""}, ""}},
-					{Match: &MatchRule{"value", "", "", "x", Argument{"header", "c", ""}}},
+					{Match: &MatchRule{"value", "", "", "x", Argument{"header", "c", ""}, ""}},
 				},
 			},
 			{
 				Or: &OrRule{
-					{Match: &MatchRule{"value", "", "", "w", Argument{"header", "d", ""}}},
+					{Match: &MatchRule{"value", "", "", "w", Argument{"header", "d", ""}, ""}},
-					{Match: &MatchRule{"value", "", "", "v", Argument{"header", "e", ""}}},
+					{Match: &MatchRule{"value", "", "", "v", Argument{"header", "e", ""}, ""}},
 				},
 			},
 			{
 				Not: &NotRule{
-					Match: &MatchRule{"value", "", "", "u", Argument{"header", "f", ""}},
+					Match: &MatchRule{"value", "", "", "u", Argument{"header", "f", ""}, ""},
 				},
 			},
 		},
@@ -326,7 +368,7 @@ var andRuleTests = []struct {
 	// failures
 	{
 		"invalid rule",
-		AndRule{{Match: &MatchRule{"value", "", "", "X", Argument{"header", "a", ""}}}},
+		AndRule{{Match: &MatchRule{"value", "", "", "X", Argument{"header", "a", ""}, ""}}},
 		&map[string]interface{}{"Y": "z"}, nil, nil, nil,
 		false, false,
 	},
@@ -334,7 +376,7 @@ var andRuleTests = []struct {
 
 func TestAndRule(t *testing.T) {
 	for _, tt := range andRuleTests {
-		ok, err := tt.rule.Evaluate(tt.headers, tt.query, tt.payload, &tt.body)
+		ok, err := tt.rule.Evaluate(tt.headers, tt.query, tt.payload, &tt.body, "")
 		if ok != tt.ok || (err != nil) != tt.err {
 			t.Errorf("failed to match %#v:\nexpected ok: %#v, err: %v\ngot ok: %#v, err: %v", tt.desc, tt.ok, tt.err, ok, err)
 		}
@@ -352,8 +394,8 @@ var orRuleTests = []struct {
 	{
 		"(a=z, b=X): a=z || b=y",
 		OrRule{
-			{Match: &MatchRule{"value", "", "", "z", Argument{"header", "a", ""}}},
+			{Match: &MatchRule{"value", "", "", "z", Argument{"header", "a", ""}, ""}},
-			{Match: &MatchRule{"value", "", "", "y", Argument{"header", "b", ""}}},
+			{Match: &MatchRule{"value", "", "", "y", Argument{"header", "b", ""}, ""}},
 		},
 		&map[string]interface{}{"A": "z", "B": "X"}, nil, nil, []byte{},
 		true, false,
@@ -361,8 +403,8 @@ var orRuleTests = []struct {
 	{
 		"(a=X, b=y): a=z || b=y",
 		OrRule{
-			{Match: &MatchRule{"value", "", "", "z", Argument{"header", "a", ""}}},
+			{Match: &MatchRule{"value", "", "", "z", Argument{"header", "a", ""}, ""}},
-			{Match: &MatchRule{"value", "", "", "y", Argument{"header", "b", ""}}},
+			{Match: &MatchRule{"value", "", "", "y", Argument{"header", "b", ""}, ""}},
 		},
 		&map[string]interface{}{"A": "X", "B": "y"}, nil, nil, []byte{},
 		true, false,
@@ -370,8 +412,8 @@ var orRuleTests = []struct {
 	{
 		"(a=Z, b=Y): a=z || b=y",
 		OrRule{
-			{Match: &MatchRule{"value", "", "", "z", Argument{"header", "a", ""}}},
+			{Match: &MatchRule{"value", "", "", "z", Argument{"header", "a", ""}, ""}},
-			{Match: &MatchRule{"value", "", "", "y", Argument{"header", "b", ""}}},
+			{Match: &MatchRule{"value", "", "", "y", Argument{"header", "b", ""}, ""}},
 		},
 		&map[string]interface{}{"A": "Z", "B": "Y"}, nil, nil, []byte{},
 		false, false,
@@ -380,7 +422,7 @@ var orRuleTests = []struct {
 	{
 		"invalid rule",
 		OrRule{
-			{Match: &MatchRule{"value", "", "", "z", Argument{"header", "a", ""}}},
+			{Match: &MatchRule{"value", "", "", "z", Argument{"header", "a", ""}, ""}},
 		},
 		&map[string]interface{}{"Y": "Z"}, nil, nil, []byte{},
 		false, false,
@@ -389,7 +431,7 @@ var orRuleTests = []struct {
 
 func TestOrRule(t *testing.T) {
 	for _, tt := range orRuleTests {
-		ok, err := tt.rule.Evaluate(tt.headers, tt.query, tt.payload, &tt.body)
+		ok, err := tt.rule.Evaluate(tt.headers, tt.query, tt.payload, &tt.body, "")
 		if ok != tt.ok || (err != nil) != tt.err {
 			t.Errorf("%#v:\nexpected ok: %#v, err: %v\ngot ok: %#v err: %v", tt.desc, tt.ok, tt.err, ok, err)
 		}
@@ -404,13 +446,13 @@ var notRuleTests = []struct {
 	ok                      bool
 	err                     bool
 }{
-	{"(a=z): !a=X", NotRule{Match: &MatchRule{"value", "", "", "X", Argument{"header", "a", ""}}}, &map[string]interface{}{"A": "z"}, nil, nil, []byte{}, true, false},
+	{"(a=z): !a=X", NotRule{Match: &MatchRule{"value", "", "", "X", Argument{"header", "a", ""}, ""}}, &map[string]interface{}{"A": "z"}, nil, nil, []byte{}, true, false},
-	{"(a=z): !a=z", NotRule{Match: &MatchRule{"value", "", "", "z", Argument{"header", "a", ""}}}, &map[string]interface{}{"A": "z"}, nil, nil, []byte{}, false, false},
+	{"(a=z): !a=z", NotRule{Match: &MatchRule{"value", "", "", "z", Argument{"header", "a", ""}, ""}}, &map[string]interface{}{"A": "z"}, nil, nil, []byte{}, false, false},
 }
 
 func TestNotRule(t *testing.T) {
 	for _, tt := range notRuleTests {
-		ok, err := tt.rule.Evaluate(tt.headers, tt.query, tt.payload, &tt.body)
+		ok, err := tt.rule.Evaluate(tt.headers, tt.query, tt.payload, &tt.body, "")
 		if ok != tt.ok || (err != nil) != tt.err {
 			t.Errorf("failed to match %#v:\nexpected ok: %#v, err: %v\ngot ok: %#v, err: %v", tt.rule, tt.ok, tt.err, ok, err)
 		}

webhook.go

@@ -21,7 +21,7 @@ import (
 )
 
 const (
-	version = "2.6.2"
+	version = "2.6.3"
 )
 
 var (
@@ -243,7 +243,7 @@ func hookHandler(w http.ResponseWriter, r *http.Request) {
 		if matchedHook.TriggerRule == nil {
 			ok = true
 		} else {
-			ok, err = matchedHook.TriggerRule.Evaluate(&headers, &query, &payload, &body)
+			ok, err = matchedHook.TriggerRule.Evaluate(&headers, &query, &payload, &body, r.RemoteAddr)
 			if err != nil {
 				msg := fmt.Sprintf("error evaluating hook: %s", err)
 				log.Printf(msg)