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Code taken from : http://portswigger.net/burp/extender/
package burp;
/*
* @(#)IExtensionHelpers.java
*
* Copyright PortSwigger Ltd. All rights reserved.
*
* This code may be used to extend the functionality of Burp Suite Free Edition
* and Burp Suite Professional, provided that this usage does not violate the
* license terms for those products.
*/
import java.net.URL;
import java.util.List;
/**
* This interface contains a number of helper methods, which extensions can use
* to assist with various common tasks that arise for Burp extensions.
*
* Extensions can call
* IBurpExtenderCallbacks.getHelpers to obtain an instance of this
* interface.
*/
public interface IExtensionHelpers
{
/**
* This method can be used to analyze an HTTP request, and obtain various
* key details about it.
*
* @param request An
* IHttpRequestResponse object containing the request to be
* analyzed.
* @return An
* IRequestInfo object that can be queried to obtain details
* about the request.
*/
IRequestInfo analyzeRequest(IHttpRequestResponse request);
/**
* This method can be used to analyze an HTTP request, and obtain various
* key details about it.
*
* @param httpService The HTTP service associated with the request. This is
* optional and may be
* null, in which case the resulting
* IRequestInfo object will not include the full request URL.
* @param request The request to be analyzed.
* @return An
* IRequestInfo object that can be queried to obtain details
* about the request.
*/
IRequestInfo analyzeRequest(IHttpService httpService, byte[] request);
/**
* This method can be used to analyze an HTTP request, and obtain various
* key details about it. The resulting
* IRequestInfo object will not include the full request URL.
* To obtain the full URL, use one of the other overloaded
* analyzeRequest() methods.
*
* @param request The request to be analyzed.
* @return An
* IRequestInfo object that can be queried to obtain details
* about the request.
*/
IRequestInfo analyzeRequest(byte[] request);
/**
* This method can be used to analyze an HTTP response, and obtain various
* key details about it.
*
* @param response The response to be analyzed.
* @return An
* IResponseInfo object that can be queried to obtain details
* about the response.
*/
IResponseInfo analyzeResponse(byte[] response);
/**
* This method can be used to retrieve details of a specified parameter
* within an HTTP request. Note: Use
* analyzeRequest() to obtain details of all parameters within
* the request.
*
* @param request The request to be inspected for the specified parameter.
* @param parameterName The name of the parameter to retrieve.
* @return An
* IParameter object that can be queried to obtain details
* about the parameter, or
* null if the parameter was not found.
*/
IParameter getRequestParameter(byte[] request, String parameterName);
/**
* This method can be used to URL-decode the specified data.
*
* @param data The data to be decoded.
* @return The decoded data.
*/
String urlDecode(String data);
/**
* This method can be used to URL-encode the specified data. Any characters
* that do not need to be encoded within HTTP requests are not encoded.
*
* @param data The data to be encoded.
* @return The encoded data.
*/
String urlEncode(String data);
/**
* This method can be used to URL-decode the specified data.
*
* @param data The data to be decoded.
* @return The decoded data.
*/
byte[] urlDecode(byte[] data);
/**
* This method can be used to URL-encode the specified data. Any characters
* that do not need to be encoded within HTTP requests are not encoded.
*
* @param data The data to be encoded.
* @return The encoded data.
*/
byte[] urlEncode(byte[] data);
/**
* This method can be used to Base64-decode the specified data.
*
* @param data The data to be decoded.
* @return The decoded data.
*/
byte[] base64Decode(String data);
/**
* This method can be used to Base64-decode the specified data.
*
* @param data The data to be decoded.
* @return The decoded data.
*/
byte[] base64Decode(byte[] data);
/**
* This method can be used to Base64-encode the specified data.
*
* @param data The data to be encoded.
* @return The encoded data.
*/
String base64Encode(String data);
/**
* This method can be used to Base64-encode the specified data.
*
* @param data The data to be encoded.
* @return The encoded data.
*/
String base64Encode(byte[] data);
/**
* This method can be used to convert data from String form into an array of
* bytes. The conversion does not reflect any particular character set, and
* a character with the hex representation 0xWXYZ will always be converted
* into a byte with the representation 0xYZ. It performs the opposite
* conversion to the method
* bytesToString(), and byte-based data that is converted to a
* String and back again using these two methods is guaranteed to retain its
* integrity (which may not be the case with conversions that reflect a
* given character set).
*
* @param data The data to be converted.
* @return The converted data.
*/
byte[] stringToBytes(String data);
/**
* This method can be used to convert data from an array of bytes into
* String form. The conversion does not reflect any particular character
* set, and a byte with the representation 0xYZ will always be converted
* into a character with the hex representation 0x00YZ. It performs the
* opposite conversion to the method
* stringToBytes(), and byte-based data that is converted to a
* String and back again using these two methods is guaranteed to retain its
* integrity (which may not be the case with conversions that reflect a
* given character set).
*
* @param data The data to be converted.
* @return The converted data.
*/
String bytesToString(byte[] data);
/**
* This method searches a piece of data for the first occurrence of a
* specified pattern. It works on byte-based data in a way that is similar
* to the way the native Java method
* String.indexOf() works on String-based data.
*
* @param data The data to be searched.
* @param pattern The pattern to be searched for.
* @param caseSensitive Flags whether or not the search is case-sensitive.
* @param from The offset within
* data where the search should begin.
* @param to The offset within
* data where the search should end.
* @return The offset of the first occurrence of the pattern within the
* specified bounds, or -1 if no match is found.
*/
int indexOf(byte[] data,
byte[] pattern,
boolean caseSensitive,
int from,
int to);
/**
* This method builds an HTTP message containing the specified headers and
* message body. If applicable, the Content-Length header will be added or
* updated, based on the length of the body.
*
* @param headers A list of headers to include in the message.
* @param body The body of the message, of
* null if the message has an empty body.
* @return The resulting full HTTP message.
*/
byte[] buildHttpMessage(List headers, byte[] body);
/**
* This method creates a GET request to the specified URL. The headers used
* in the request are determined by the Request headers settings as
* configured in Burp Spider's options.
*
* @param url The URL to which the request should be made.
* @return A request to the specified URL.
*/
byte[] buildHttpRequest(URL url);
/**
* This method adds a new parameter to an HTTP request, and if appropriate
* updates the Content-Length header.
*
* @param request The request to which the parameter should be added.
* @param parameter An
* IParameter object containing details of the parameter to be
* added. Supported parameter types are:
* PARAM_URL,
* PARAM_BODY and
* PARAM_COOKIE.
* @return A new HTTP request with the new parameter added.
*/
byte[] addParameter(byte[] request, IParameter parameter);
/**
* This method removes a parameter from an HTTP request, and if appropriate
* updates the Content-Length header.
*
* @param request The request from which the parameter should be removed.
* @param parameter An
* IParameter object containing details of the parameter to be
* removed. Supported parameter types are:
* PARAM_URL,
* PARAM_BODY and
* PARAM_COOKIE.
* @return A new HTTP request with the parameter removed.
*/
byte[] removeParameter(byte[] request, IParameter parameter);
/**
* This method updates the value of a parameter within an HTTP request, and
* if appropriate updates the Content-Length header. Note: This
* method can only be used to update the value of an existing parameter of a
* specified type. If you need to change the type of an existing parameter,
* you should first call
* removeParameter() to remove the parameter with the old type,
* and then call
* addParameter() to add a parameter with the new type.
*
* @param request The request containing the parameter to be updated.
* @param parameter An
* IParameter object containing details of the parameter to be
* updated. Supported parameter types are:
* PARAM_URL,
* PARAM_BODY and
* PARAM_COOKIE.
* @return A new HTTP request with the parameter updated.
*/
byte[] updateParameter(byte[] request, IParameter parameter);
/**
* This method can be used to toggle a request's method between GET and
* POST. Parameters are relocated between the URL query string and message
* body as required, and the Content-Length header is created or removed as
* applicable.
*
* @param request The HTTP request whose method should be toggled.
* @return A new HTTP request using the toggled method.
*/
byte[] toggleRequestMethod(byte[] request);
/**
* This method constructs an
* IHttpService object based on the details provided.
*
* @param host The HTTP service host.
* @param port The HTTP service port.
* @param protocol The HTTP service protocol.
* @return An
* IHttpService object based on the details provided.
*/
IHttpService buildHttpService(String host, int port, String protocol);
/**
* This method constructs an
* IHttpService object based on the details provided.
*
* @param host The HTTP service host.
* @param port The HTTP service port.
* @param useHttps Flags whether the HTTP service protocol is HTTPS or HTTP.
* @return An
* IHttpService object based on the details provided.
*/
IHttpService buildHttpService(String host, int port, boolean useHttps);
/**
* This method constructs an
* IParameter object based on the details provided.
*
* @param name The parameter name.
* @param value The parameter value.
* @param type The parameter type, as defined in the
* IParameter interface.
* @return An
* IParameter object based on the details provided.
*/
IParameter buildParameter(String name, String value, byte type);
/**
* This method constructs an
* IScannerInsertionPoint object based on the details provided.
* It can be used to quickly create a simple insertion point based on a
* fixed payload location within a base request.
*
* @param insertionPointName The name of the insertion point.
* @param baseRequest The request from which to build scan requests.
* @param from The offset of the start of the payload location.
* @param to The offset of the end of the payload location.
* @return An
* IScannerInsertionPoint object based on the details provided.
*/
IScannerInsertionPoint makeScannerInsertionPoint(
String insertionPointName,
byte[] baseRequest,
int from,
int to);
}