Converting MailMessage to Memory stream remove BCC

I had a problem using SendRawMessage with Amazon SES & not able to send BCC, later I figured out that the problem is in converting the mail message to memory stream.

So this is the detailed method required to convert mail message to memory stream and include BCC also. It for .Net 4.5

1 - In SendMessageUsingAWSProfileAsync(, Remove the desintation as it does not entertain BCC

                var sendRequest = new SendRawEmailRequest(rawMessage)
                {
                    Source = mailMessage.From.Address, // Destination is removed from here intenationally as it stop doing BCC

}
2 - In ConvertMailMessageToMemoryStream, Include BCC headers while creating the stream from mail message

// BCC is not included by default, so need to include it.
        if (message.Bcc.Count > 0)
        {
            MethodInfo writeHeadersMethod = mailWriter.GetType().GetMethod("WriteHeaders", BindingFlags.Instance | BindingFlags.NonPublic);
            System.Collections.Specialized.NameValueCollection bccHeaders = new System.Collections.Specialized.NameValueCollection();
            bccHeaders.Add("BCC", string.Join(",", message.Bcc.Select(b => b.Address)));
            writeHeadersMethod.Invoke(mailWriter, BindingFlags.Instance | BindingFlags.NonPublic, null, new object[] { bccHeaders, false }, null);
        }

Add a trailing slash to incoming HTTP requests

In some questions you always want a backslash in your HTTP request, you can easily do that with IIS rewrite rules

First you need to identify if incoming request does not contain an ending slash, that can be done by the following regex. We are only focusing on a special incoming pattern  like api/a/b etc



if true redirect attach a slash with it.
 

Add some conditions so that there is no infinite loop


   
   
   
 

The entire code will look like following (Add the following code in your Web.Config  in System.WebServer)


     
           
 
 
   
   
   
 
 

     
   

IIS URL Rewrite Rules : Redirect HTTP requests to HTTPS

Many times we want to open up some pages to only HTTPS request, so in that case we need to redirect all non HTTPS incoming requests to HTTPS.

Add the following code in your Web.Config (The italic code is optional)



     
       
         
         
           
           
           
         

         
       
   

Content Negotiation : CONTENT-TYPE & ACCEPT HEADERS

When one client machine talks to another machine (lets say one computer talks to another) to get some information, it sends a HTTP request (There are many ways to talk, but we will limit our conversation to HTTP only), The HTTP request contains a lot of interesting data which can be manipulated by the server to build the response for them. HTTP request contains Headers & content. Headers are the meta data about the request. They can reveal every information, like what type of information is being sent, i.e. image/ text/ json/ xml etc. They can also mention what format of response they are expecting. Server process these headers to understand request & generate response type. This is called Content Negotiation. 

There are two very important headers which can be sent along the request to define these properties.

- CONTENT-TYPE (Define the data type of request)
- ACCEPT (Define the expected response format)


To explain this, Let's send some request to a local test server. First sending the request without any content-type set.

Request (No meta data)

POST http://localhost:3050/api/v2/tasks HTTP/1.1
User-Agent: Fiddler
Host: localhost:3050
Content-Length: 43

{"Subject":"This is the most interesting "}

Response

HTTP/1.1 415 Unsupported Media Type
Cache-Control: no-cache
Pragma: no-cache
Content-Type: application/json; charset=utf-8
Expires: -1
Server: Microsoft-IIS/10.0
X-AspNet-Version: 4.0.30319
X-SourceFiles: =?UTF-8?B?QzpcVEZTXExlYXJuaW5nXFdlYkFQSVxzcmNcV2ViQXBpMkJvb2suV2ViLkFwaVxhcGlcdjJcdGFza3M=?=
X-Powered-By: ASP.NET
Date: Wed, 23 Sep 2015 09:38:09 GMT
Content-Length: 794
 

You see that server returned 415 error, means it could not understand the request data type so as a return could not choose any media for-matter to serialize the data, even if we are passing the JSON. Now, let's exclusively define that we are sending JSON.

Request (JSON)

We are defining exclusively that we are sending JSON this time by defining the content-type header. There is a space between the code to define content of the request.

POST /api/v2/tasks HTTP/1.1
User-Agent: Fiddler
Host: localhost:3050
Content-Length: 43
Content-Type: application/json
{"Subject":"This is the most interesting "}

Response (JSON)

And yes, Server very easily understood the input type, choose a media formatter to process the request and send the response in default return type. The default return type in my application is JSON. The way request use to define its data type, response does the same, You can see a Content-Type in response as well, it means the response contains the JSON format. This will help client to understand the data type.

HTTP/1.1 200 OK
Cache-Control: no-cache
Pragma: no-cache
Content-Type: application/json; charset=utf-8
Expires: -1
Server: Microsoft-IIS/10.0
X-AspNet-Version: 4.0.30319
X-SourceFiles: =?UTF-8?B?QzpcVEZTXExlYXJuaW5nXFdlYkFQSVxzcmNcV2ViQXBpMkJvb2suV2ViLkFwaVxhcGlcdjJcdGFza3M=?=
X-Powered-By: ASP.NET
Date: Wed, 23 Sep 2015 09:45:31 GMT
Content-Length: 174

{"TaskId":0,"Subject":"In V2, Task Subject ","StartDate":null,"DueDate":null,"CreateDate":null,"CreatedBy":null,"CompleteDate":null,"Status":null,"Assignees":null,"Links":[]}

Request (JSON) expecting XML

Now Say, i want to send the JSON, but I want to see my results in XML, So now while I am sending the request to the server, I will also send the instructions to build the response according to my choice. I will define ACCEPT headers, means I will only accept predefined data type as return. It's server's job to build the result in this format. Client does not need to do anything here.

POST /api/v2/tasks HTTP/1.1
User-Agent: Fiddler
Host: localhost:3050
Content-Length: 43
Content-Type: application/json
Accept:application/xml

{"Subject":"This is the most interesting "}

Response (XML)

Now server honors the request and build the response in desired format & set its meta data. See below the content-type is XML means the data returned in XML. You can find the XML text in the content of the response.

HTTP/1.1 200 OK
Cache-Control: no-cache
Pragma: no-cache
Content-Type: application/xml; charset=utf-8Expires: -1
Server: Microsoft-IIS/10.0
X-AspNet-Version: 4.0.30319
X-SourceFiles: =?UTF-8?B?QzpcVEZTXExlYXJuaW5nXFdlYkFQSVxzcmNcV2ViQXBpMkJvb2suV2ViLkFwaVxhcGlcdjJcdGFza3M=?=
X-Powered-By: ASP.NET
Date: Wed, 23 Sep 2015 09:47:28 GMT
Content-Length: 387
In V2, Task Subject 0

Recover from DNN - SQL Injection attack

Many attackers attack DNN website and able to get into module definitions to update the values so when ever somebody opens the website, you start getting so many annoying popups. In worst cases website could go offline also.

During the investigation you will see errors like

 DotNetNuke.Services.Exceptions.ModuleLoadException: String was not recognized as a valid Boolean. ---> System.FormatException: String was not recognized as a valid Boolean. at System.Boolean.Parse(String value) at DotNetNuke.Modules.Admin.Modules.ModuleSettingsPage.BindData() in 

You need to get into your database to clean up these values. There are 2 tables where you need to take a look, See the table names below

• dbo.ModuleSettings 
• dbo.TabModuleSettings 

Inside these tables, Check the SettingValue which might be affected. Take a backup of these tables, and use the following script to clean up these tables 

See the entries

SELECT [TabModuleID]
      ,[SettingName]
      ,[SettingValue] as SettingValue_Old,
       left(SettingValue, charindex('

Update [dbo].[TabModuleSettings]
set SettingValue = left(SettingValue, charindex('

Update your window 7 Product key (Change product key link not available in window 7)

Normally, to change the product key in Windows 8, you open Control Panel, select System, and then click on the Change product key link.

If when you try to change the Windows product license key, you find that the Change product key link is not available or visible, you may want to check if your Windows is activated first, because this usually happens if Windows has not been activated yet.

You can activate Windows using the SLUI.EXE 3 command. You can get more information here on how to activate any version of Windows.

Or you can run the following command at an elevated command prompt says KB2750773:

slmgr.vbs /ipk  

You need to do it with Admin rights

Capturing bulk screenshots of entire website for review etc

There are many cases we need to review the entire website with business. It's always easy to take print out of the desired pages and pass it to business. Although there are many paid tools for SEO which helps getting the detail of specified page, I found a very good Mozilla Plugin to capture the screenshots. You just need to pass the list of all pages in a text file and you get screenshot of every page. You can login to target website before running the tool to capture the If some pages are under authenticated area

Extension Name : Grab Them All (Mozilla)

http://rafal.zelazko.info/2008/06/23/easy-screenshot-of-many-sites/