Guide to OpenIG
Chapter 11. Configuration Templates

Extracts a hidden value from the login page and includes it in the login form POSTed to the target application.

{
  "heap": {
    "objects": [
    {
        "name": "HandlerServlet",
        "comment": "Entry point that transforms Servlet request to handler request.",
        "type": "HandlerServlet",
        "config": {
            "handler": "DispatchHandler",
            "baseURI":"http://TARGETIP"
        }
    },
    {       
        "name": "DispatchHandler",
        "type": "DispatchHandler",
        "config": {
            "bindings": [   
                {                       
                    "condition": "${exchange.request.uri.path == '/login'}",
                    "handler": "LoginChain",
                }, 
                {                       
                    "handler": "OutgoingChain",
                }, 
            ]   
        }   
    },
    {
        "name": "LoginChain",
        "type": "Chain",
        "config": {
            "filters": ["HiddenValueExtract","LoginRequest"],
            "handler": "OutgoingChain" 
        }   
    },
    {
	"name": "HiddenValueExtract",
	"type": "EntityExtractFilter",
	"config": {
	    "messageType": "response",
	    "target": "${exchange.hiddenValue}",
	    "bindings": [
		{
		    "key": "value",
		    "pattern": "wpLoginToken\"\s.*value=\"(.*)\"",
		    "template": "$1"
		}
	    ]
	}
    },
    {   
        "name": "LoginRequest",
        "type": "StaticRequestFilter",
        "config": {
            "method": "POST",
            "uri": "https://TARGETIP/login",
            "form": {
                "USER": ["myusername"],
                "PASSWORD": ["mypassword"],
                "hiddenValue": ["${exchange.hiddenValue.value}"],
            }   
        }   
    },
    {
        "name": "OutgoingChain",
        "type": "Chain",
        "config": {
            "filters": ["CaptureFilter"],
            "handler": "ClientHandler" 
        }   
    },
    {   
        "name": "CaptureFilter",
        "type": "CaptureFilter",
        "config": {
            "captureEntity": false,
            "file": "/tmp/gateway.log",
        }       
    },
    {
        "name": "ClientHandler",
        "comment": "Responsible for sending all requests to remote servers.",
        "type": "ClientHandler",
        "config": {
            }
        }
    ]
  },
  "servletObject": "HandlerServlet",
}