Is simple_format helper in Rails enough to protect against xss? - ruby-on-rails-3

I read and tested that simple_format allows certain html tags.
Is that safe enough to protect again xss? (assuming I don't mind user will put html to make their text pretty) Could this result in xss? or should I keep with h method?

It looks like there was a vulnerability in rails 4.0.0 and 4.0.1 that has now been resolved, so it should be safe. Here's a link to the issue: https://groups.google.com/forum/#!topic/ruby-security-ann/5ZI1-H5OoIM

Related

Opera Next extension autoupdate via update_url

I got problem with my company internal extension. They don't want to publish it, as it does gather data on external server. So I need to host it myself... but would like not to lose ability of autoupdate.
As far as I read I need to use update_url in manifest, but nothing more is said in Opera documentation...
"update_url": "http://path/to/updateInfo.xml", - as it is said in documentation page
Ok... and what should I put in that xml? Will it autoupdate or just notify users about new updates? Where do I put rest of updated files?
I tried to concat Opera itself about this question, but they don't give any contact information except something like if you have problem, ask on stackoverflow... so here I am.
If it does not work, I was thinking about really BAD method, using unsafe-eval and keeping newest version in local storage... but would rather like to avoid that.
In general the behavior is the same as for Chrome. You can base on this document: https://developer.chrome.com/extensions/autoupdate

Does google index script tags as content when using handlebars.js

If you use the standard handlesbar.js implementation, does Google view the content within the custom script tags as content, script or unknown content?
If you're in doubt, do in pure HTML. Unfortunately, Google should ignore this. I looked about, and all I heard is that this application was not made ​​to be searchfriendly.
In fact, Google undestand and even follow links created via Javascript, but handlebarsjs is very more complex.
Possible solution
A strong suggestion that I make to you is load a simplified version with some content in plain simplified and after use handlebarsjs, so at then at least do not let google completely blind. But thsi version should be used also to end user, because google Will know if you show a diferent content just for Googlebot.
Possible solution 2
Exist a way to make websites that rely heavily on AJAX still work in Making AJAX Applications Crawlable

disable caching for i18n phrases rails 3

I'm new to building a rails 3 app with multiple language support. The product requires that the translation team should be able to updated phrases from web interface and see its effects on refresh. They are not concerned about the performance hit this model carries.
So i'm using the gem i18n-active_record and its backend with i18n. The problem is, that translations stored in the db are not fetched on every request. I want the system to query the translations table for each key every time it gets the rendering request.
We're to disable this later when the site is mature enough, but this is an essential feature for now. Any ideas?
You could add in your ApplicationController:
before_filter { I18n.reload! }
I'm afraid I can't really comment on using i18n-active_record, but we run a staging server with the localeapp gem running in daemon mode. This means that translations can be editing via a GUI by a translator and they appear instantly on the staging server. Might be something worth looking into for you.
Disclosure: I'm a developer for Locale

Injecting arbitrary Javascript on all my Rails view

I'm trying to implement a javascript tracker that i need to inject arbitrarily on all of the views rendered by my application, just like the newrelic client instrumentation works.
My app allows user to edit their liquid html templates, so the idea doing this is to inject the script in a way that the user is uncapable to remove it (auto added)
I look the code in the newrelic gem but is too confusing and i wondering if there is a more simple way to do it.
Thanks in advance!
Well I have a solution for this you could write a middleware where you could just check
if the request is for html page or (css or javascript)
if the request is for the html page
append the javascript to the html page before sending the response for the server
here the catch you need very sure what you are doing this I have ran into this problem
Make sure your middleware placement is correct since the development everything is single thread and wrong placement would result in deadlock error
When HTML page is consider what if the request is an ajax request what then you have to be very specific on that regards
Hope This help

Rails 3 CMS + blog wanted to fit existing site. Unobtrusive and Lightweight

I'd like to add a CMS and blog to a web app. One that won't get in the way. There's not a lot of content, but enough that we want non-devs to be able to revise pages and probably add and remove them too.
We have a substantial app that can't be touched by the CMS, not a site that we're migrating.
How have you dealt with this situation?
Would you advise:
Running two apps (a content app and the 'app' app)
Plugging in a light weight CMS
Rolling our own using gems/plugins for WYSIWYG
Details
We'll be adding a bug ticketing and support system later too. Probably built into the app.
We'd like the users of the app to be able to comment on pages and blog posts, file tickets, etc. all from their main account, so it seems to make sense to build it into our app, rather than as an extra app. Love to hear war stories on this.
Should be:
Unobtrusive (Shouldn't interfere with the existing app)
Must not mess with Devise, DeclarativeAuthorization, or Omniauth. We've got extensive user accounts, permissions, authentication mechanisms and groups setup. These must stay.
Lightweight (prefer something dev friendly than feature loaded)
Desired Features:
Basic WYSIWYG for content editors
Lets us handle accounts (with Devise)
and maybe even permissions (with DeclarativeAuthorization)
I've read this similar question, but the author seems willing to have something a bit more intrusive.
Simple Rails 3 CMS Gem/Plugin?
Options Found
Refinery seems to have a lot of features, but at a cursory look it needs a lot of control over what's going on: http://refinerycms.com/guides/attaching-refinery-cms-to-an-existing-rails-application It says it's modular, but it seems like there's a big chunk of non optional stuff in there.
Radiant seems a bit monolithic as well
http://groups.google.com/group/radiantcms/browse_thread/thread/b691cf9ab644a8b2
ComfortableMexicanSofa seems a bit closer to what I want: https://github.com/twg/comfortable-mexican-sofa
Adva-Cms has the right philosophy but appears to be dead. Adva-Cms2 isn't ready
http://adva-cms.org/
Governor seems good, but maybe a bit too young and lean
https://github.com/carpeliam/governor
Conclusion
So far rolling our own, or using ComfortableMexicanSofa seems like the bet, but I'd like your thoughts before I spend a few days messing around with it.
I am now rolling my own blog app and I am kind of newbie to Rails 3. Even like that, in 1 week i have a blog with tags, comments, authentication with omniauth, etc.. my advise is: roll your own. I was having the same doubt and looking for pre-made solutions and I decided to start it from zero and just look for plugins for anything i need.
It goes pretty fast if you know already some rails programming and you use the right plugins. This is what i used:
Omniauth to let users be able to autenticate with facebook, twitter etc.. and leave you comments.
rails_admin: it allows you to manage your blog by going to yourapp.com/admin. It uses devise to create an Admin user (you can specify a diferent model name than user to not to mix it with the users from omniauth or from your other app) and if you have the right models and associations between them you can from there create your posts, assign them tags or categories and also delete comments etc.. its all done in an easy way. For the Text Area that you use to introduce the content of your posts you can associate it with the ckeditor just by adding to the rails_admin initializer something like:
config.model Post do
edit do
field :body, :text do
ckeditor true
end
end
end
And with the ckeditor you can introduce pictures, attach videos, format text, and so on.
Use kaminari for pagination, or you can use will_paginate if you are more used to that.
Using the blueprint framework for styling with css you will save time and have a more standar styling.
Use few jquery lines to insert/delete comments graciously.
And that's all I can remember now. And if it shouldn't interfere with the main app, i would just assign a subdomain for it. So if you go to blog.myapp.com you access to the blog and if you go to myapp.com you access to the app. And you want users from the app to interact with the blog so you should use just one app and have this 2 subdomains pointing at differents parts of the same a app.. take a look at: rails 3 - one app, multiple domains, how implement a different 'root' route for one of the domains?
That's all i can think now! let me know if i can help you in anything else.
rails_admin: it allows you to manage your blog by going to yourapp.com/admin. It uses devise to create an Admin user (you can specify a diferent model name than user to not to mix it with the users from omniauth or from your other app) and if you have the right models and associations between them you can from there create your posts, assign them tags or categories and also delete comments etc.. its all done in an easy way. For the Text Area that you use to introduce the content of your posts you can associate it with the ckeditor just by adding to the rails_admin initializer something like:
config.model Post do
edit do
field :body, :text do
ckeditor true
end
end
end