I entirely agree with renaming `mark_safe`. Though it's name is correct, it
doesn't convey the gravity of what this actually does.
However I'm unsure on the `dangerously_trust_html` name. It wouldn't be
dangerous to trust the literal "<small>Some Content</small>", for example.
Perhaps it could be something a bit more explicit. `no_escape(string)`?
This assumes that most have at least heard of escaping.
On 22 February 2018 at 12:16, Josh Smeaton <josh.smea...@gmail.com> wrote:
> The concern isn't overusing an API. It's not understanding the proper use
> case for it.
> "mark safe" can sound like the API is doing sanitation so it can encourage
> developers to use it incorrectly. I'm fairly sure I've done this myself.
> The intended meaning is "this output is **already** safe" but the name
> doesn't convey that meaning clearly enough.
> What the proposal is designed to do is convey the "I trust this output"
> meaning of the API. I'm just wary of enforcing users to change code when
> they already use the API correctly.
> On Thursday, 22 February 2018 21:08:31 UTC+11, Florian Apolloner wrote:
>> Yeah, I am also worried about the churn for no gain in my eyes. If users
>> overuse mark_safe, they will overuse dangerously_trust_html too…
>> On Wednesday, February 21, 2018 at 10:41:15 PM UTC+1, Josh Smeaton wrote:
>>> I agree that the names are misleading and we should probably provide
>>> better names. I'm wary of deprecating the old names because it'll create a
>>> lot of churn (some of which would be the right thing to do). Maybe we could
>>> just alias and warn when using the old name, leaving a decision on
>>> deprecation until some time in the future.
>>> On Monday, 29 January 2018 03:14:27 UTC+11, Stuart Cox wrote:
>>>> In my experience, misuse of mark_safe() — i.e. marking stuff safe
>>>> which *isn’t* actually safe (e.g. HTML from a rich text input) — is
>>>> one of the biggest causes of XSS vulnerabilities in Django projects.
>>>> The docs warn to be careful, but unfortunately I think Django devs have
>>>> just got too used to mark_safe() being *the way* to insert HTML in a
>>>> template. And it’s easy for something that was safe when it was authored
>>>> (e.g. calling mark_safe() on a hard-coded string) to be copied /
>>>> repurposed / adapted into a case which is no longer be safe (e.g. that
>>>> string replaced with a user-provided value).
>>>> Some other frameworks use scary sounding names to help reinforce that
>>>> there are dangers around similar features, and that this isn’t something
>>>> you should use in everyday work — e.g. React’s dangerouslySetInnerHTML.
>>>> Relatedly, this topic
>>>> making it more explicit that mark_safe() refers to being safe for use
>>>> in *HTML* contexts (rather than JS, CSS, SQL, etc).
>>>> Combining the two, it would be great if Django could rename mark_safe() to
>>>> dangerously_trust_html(), |safe to |dangerously_trust_html,
>>>> @csrf_exempt to @dangerously_csrf_exempt, etc.
>>>> Developers who know what they’re doing with these could then be
>>>> encouraged to create suitable wrappers which handle their use case safely
>>>> internally — e.g.:
>>>> def sanitize_and_trust_html(value):
>>>> # Safe because we sanitize before trusting
>>>> return dangerously_trust_html(bleach.clean(value))
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