MM-53165 Add X-Forwarded-For header to audit for rest api calls (#24390)

* Add X-Forwarded-For header to audit for rest api calls

* fix unit test

server/channels/audit/audit_test.go

@@ -32,7 +32,7 @@ func TestAudit_LogRecord(t *testing.T) {
 				audit.LogRecord(mlog.LvlAuditAPI, rec)
 			},
 			[]string{
-				`{"timestamp":0,"level":"audit-api","msg":"","event_name":"","status":"","actor":{"user_id":"","session_id":"","client":"","ip_address":""},"event":{"parameters":null,"prior_state":null,"resulting_state":null,"object_type":""},"meta":null,"error":{}}`,
+				`{"timestamp":0,"level":"audit-api","msg":"","event_name":"","status":"","actor":{"user_id":"","session_id":"","client":"","ip_address":"","x_forwarded_for":""},"event":{"parameters":null,"prior_state":null,"resulting_state":null,"object_type":""},"meta":null,"error":{}}`,
 			},
 		},
 		{
@@ -56,7 +56,7 @@ func TestAudit_LogRecord(t *testing.T) {
 				audit.LogRecord(mlog.LvlAuditAPI, rec)
 			},
 			[]string{
-				strings.Replace(`{"timestamp":0,"level":"audit-api","msg":"","event_name":"User.Update","status":"success","actor":{"user_id":"","session_id":"","client":"","ip_address":""},"event":{"parameters":null,"prior_state":{"allow_marketing":false,"auth_service":"","bot_description":"","bot_last_icon_update":0,"create_at":0,"delete_at":0,"disable_welcome_email":false,"email":"","email_verified":false,"failed_attempts":0,"id":"_____USERID_____","is_bot":false,"last_activity_at":0,"last_password_update":0,"last_picture_update":0,"locale":"","mfa_active":false,"notify_props":null,"position":"","props":null,"remote_id":null,"roles":"","terms_of_service_create_at":0,"terms_of_service_id":"","timezone":null,"update_at":0,"username":"TestABC"},"resulting_state":{"allow_marketing":false,"auth_service":"","bot_description":"","bot_last_icon_update":0,"create_at":0,"delete_at":0,"disable_welcome_email":false,"email":"","email_verified":false,"failed_attempts":0,"id":"_____USERID_____","is_bot":false,"last_activity_at":0,"last_password_update":0,"last_picture_update":0,"locale":"","mfa_active":false,"notify_props":null,"position":"","props":null,"remote_id":null,"roles":"","terms_of_service_create_at":0,"terms_of_service_id":"","timezone":null,"update_at":0,"username":"TestDEF"},"object_type":"user"},"meta":null,"error":{}}`, "_____USERID_____", userId, -1),
+				strings.Replace(`{"timestamp":0,"level":"audit-api","msg":"","event_name":"User.Update","status":"success","actor":{"user_id":"","session_id":"","client":"","ip_address":"","x_forwarded_for":""},"event":{"parameters":null,"prior_state":{"allow_marketing":false,"auth_service":"","bot_description":"","bot_last_icon_update":0,"create_at":0,"delete_at":0,"disable_welcome_email":false,"email":"","email_verified":false,"failed_attempts":0,"id":"_____USERID_____","is_bot":false,"last_activity_at":0,"last_password_update":0,"last_picture_update":0,"locale":"","mfa_active":false,"notify_props":null,"position":"","props":null,"remote_id":null,"roles":"","terms_of_service_create_at":0,"terms_of_service_id":"","timezone":null,"update_at":0,"username":"TestABC"},"resulting_state":{"allow_marketing":false,"auth_service":"","bot_description":"","bot_last_icon_update":0,"create_at":0,"delete_at":0,"disable_welcome_email":false,"email":"","email_verified":false,"failed_attempts":0,"id":"_____USERID_____","is_bot":false,"last_activity_at":0,"last_password_update":0,"last_picture_update":0,"locale":"","mfa_active":false,"notify_props":null,"position":"","props":null,"remote_id":null,"roles":"","terms_of_service_create_at":0,"terms_of_service_id":"","timezone":null,"update_at":0,"username":"TestDEF"},"object_type":"user"},"meta":null,"error":{}}`, "_____USERID_____", userId, -1),
 			},
 		},
 	}

server/channels/audit/record.go

@@ -23,10 +23,11 @@ type EventData struct {
 
 // EventActor is the subject triggering the event
 type EventActor struct {
-	UserId    string `json:"user_id"`
-	SessionId string `json:"session_id"`
-	Client    string `json:"client"`
-	IpAddress string `json:"ip_address"`
+	UserId        string `json:"user_id"`
+	SessionId     string `json:"session_id"`
+	Client        string `json:"client"`
+	IpAddress     string `json:"ip_address"`
+	XForwardedFor string `json:"x_forwarded_for"`
 }
 
 // EventMeta is a key-value store to store related information to the event that is not directly related to the modified entity