AWS S3 sending download.txt file - amazon-web-services

I'm setting up an S3 bucket behind CloudFront that is meant to serve static assets. My problem is doing a / on any directory with no file name will have the browser download a download.txt with 0 bytes. I have my S3 bucket setup for Static Website Hosting and is pubic, so I'm able to access my assets.
https://s3-bucket.domain.com/path/to/file.jpg -> get asset, working
https://s3-bucket.domain.com/path/to/file-bad-name -> Error status 403, working. Renders error.html from S3.
https://s3-bucket.domain.com/path/to/ -> sends download.txt, not working
How do I configure #3 to not send a download.txt and render an error page instead?

There are few things happening there.
You need to map it to new origin if you want to point the path to an S3 object.
Your pattern is not having priority in CloudFront.
If you fix one of the above or both, then it should work as expected.

I have my S3 bucket setup for Static Website Hosting and is pubic
...but you selected the bucket from the dropdown list when defining the origin... yes?
You need to configure the origin domain name to use the web site hosting endpoint for the bucket.
When you configure your CloudFront distribution, for the origin, enter the Amazon S3 static website hosting endpoint for your bucket. This value appears in the Amazon S3 console, on the Properties page under Static Website Hosting. For example: http://bucket-name.s3-website-us-west-2.amazonaws.com
https://docs.aws.amazon.com/AmazonCloudFront/latest/DeveloperGuide/DownloadDistS3AndCustomOrigins.html#concept_S3Origin_website
If you don't do this, and you created folders in the bucket using the S3 console, then what you are currently observing is the expected behavior, a side effect of the way the console creates those imaginary folders.

Related

AWS S3 AccessDenied on subfolder

I have created S3 bucket, and done the steps to enable static web hosting on it.
I have verified it works by going to the URL
which looks something as following https://my-bucket.s3.aws.com
I want to put my web assets in a sub folder now
I put the web assets in a folder I called foobar
Now if want to access it I have to explictly enter URL as following:
https://my-bucket.s3.aws.com/foobar/index.html
So my question is, do I need to use some other service such as CloudFront to enable so I can go into the bucket with the following URL instead https://my-bucket.s3.aws.com/foobar, that is I don't want to have to explicit say index.html at the end?
You can't do this with a default document for a subfolder using CloudFront. Documentation says
However, if you define a default root object, an end-user request for
a subdirectory of your distribution does not return the default root
object. For example, suppose index.html is your default root object
and that CloudFront receives an end-user request for the install
directory under your CloudFront distribution:
http://d111111abcdef8.cloudfront.net/install/
CloudFront does not return the default root object even if a copy of
index.html appears in the install directory.
But that same page also says
The behavior of CloudFront default root objects is different from the
behavior of Amazon S3 index documents. When you configure an Amazon S3
bucket as a website and specify the index document, Amazon S3 returns
the index document even if a user requests a subdirectory in the
bucket. (A copy of the index document must appear in every
subdirectory.) For more information about configuring Amazon S3
buckets as websites and about index documents, see the Hosting
Websites on Amazon S3 chapter in the Amazon Simple Storage Service
Developer Guide.
So check out out that referenced guide, and the section on Configuring an Index Document in particular.

Protect webfonts via Amazon CloudFront from download

Is it possible to protect data embedded on my website via Amazon CloudFront from hotlinking or other downloads? I am mainly interested in protecting webfonts from being downloaded.
Amazon CloudFront is connected to a S3 Bucket
S3 Bucket Policy controls allowed domains for files via CloudFront
You think that could work?
Since you have cloudfront setup connected to your s3 bucket, you can use Cloudfront Signed Urls to prevent download by anyone from the public.
You can put your fonts in a folder called fonts for example, and setup a separate behaviour in cloudfront for any path that contains /fonts/ and in there you can activate Restrict Viewer Access.
In your website, you will need to add some way to generate the presigned url for this only when your webpage is loaded and you can put a short expiry time for this URL.

Serve single page app under specific path with AWS

At the moment I have mydomain.com pointing to a Django EC2 instance with ABL in front of it and CF in front of the ABL.
Now I have the requirement of serving a React single page app under an specific path mydomain.com/my-specific-path (of course everything under HTTPS)
I tried everything I could to host my SPA in an S3 bucket and use CF to redirect the calls to that S3. But it was impossible to serve the app over HTTPS that way (because of S3 hosting and subfolders).
I am thinking now about setting a reverse proxy in front of my Django app. But I don't know if that is the best solution, and I don't know the best way to do it.
Could you please give me some insights about how to serve a SPA under a specific path?
Thank you in advance.
You need to:
1) Add your ALB as an origin to your CloudFront distribution
2) Add your S3 bucket website URL as an origin to your CloudFront distribution
Note: Adding S3 as an origin from the dropdown box that auto populates here will not work for hosting a website out of S3. This feature is for hosting static files only.
2a) Optionally lock your S3 bucket down to CloudFront using a condition in the bucket policy that checks for header value that only CloudFront and your S3 bucket knows
3) Set the default root object in your CloudFront distribution to be index.html
4) Upload your react app to a sub-folder in your S3 bucket, not in the root. This sub-folder must match the path you set on your React app origin in CloudFront
5) Set a default behaviour in your CloudFront distribution that points to your ALB
6) Set a behaviour in your CloudFront distribution that points my-specific-path/* to your S3 bucket origin
7) Terminate SSL on your CloudFront distribution using AWS Certificate Manager
This setup should give you SSL on both your Django app and your React app being hosted in S3.
I've got this running, screen shots below:

CloudFront No Longer works after modifying S3 bucket

I originally created an S3 bucket with a cloudfont to display the html code in the bucket at the publicly hosted domain hosted. I deleted the contents of the S3 bucket and uploaded new files. The endpoint for the S3 bucket displays fine in the web. The hosted url no longer works, I get an 404 error.
Failed to load resource: the server responded with a status of 404 ()
Could you please provide more details of your CloudFront distribution settings? I wrote this article explaining how Cloudfront and S3 works and how you can deploy React applications step by step! It might be useful for you.
Please have a look at: Medium - How to deploy single page applications to Cloudfront
I discovered my error. Instead of using the drop down menu for the orgin link I used the endpoint of the bucket. It works now.

Hosting react app on aws S3

I am trying to host my static application on aws s3 bucket. I have put my build folder files in bucket. It looks like this
But when I go to .s3-website..amazonaws.com index.jade gets downloaded instead of webapp getting opened.
I followed this tutorial https://www.fullstackreact.com/articles/deploying-a-react-app-to-s3/
How can I get my web app work?
Update:
When I changed content type of index.jade to text/html, the browser shows html text like this
Here is how I edit metadata key in aws console
now there is no download. But still web page is not getting served.
You need to enable static site hosting on your S3 bucket. To enable website hosting for an Amazon S3 bucket
Sign in to the AWS Management Console and open the Amazon S3 console at https://console.aws.amazon.com/s3/.
In the list, choose the bucket that you want to use for your hosted website.
Choose the Properties tab.
Choose Static website hosting, and then choose Use this bucket to host a website.
You are prompted to provide the index document and any optional error documents and redirection rules that are needed.
Make sure to keep your bucket ACL as public. Also you need to parse your jade files to html.