Commit Graph

532 Commits

Author SHA1 Message Date
Anders Kaseorg 2d45308546 CVE-2020-10935: Fix XSS vulnerability in local link rewriting.
Make sure rewrite_local_links_to_relative does not accidentally change
the meaning of links.

Signed-off-by: Anders Kaseorg <anders@zulipchat.com>
2020-04-01 14:01:45 -07:00
Anders Kaseorg 4f748fb627 markdown: Stop setting target="_blank".
This setting is being overridden by the frontend since the last
commit, and the security model is clearer and more robust if we don't
make it appear as though the markdown processor is handling this
issue.

Co-authored-by: Tim Abbott <tabbott@zulipchat.com>
Signed-off-by: Anders Kaseorg <anders@zulipchat.com>
2020-04-01 14:01:45 -07:00
Tim Abbott e3a4aeeffa CVE-2020-9445: Remove unused and insecure modal_link feature.
Zulip's modal_link markdown feature has not been used since 2017; it
was a hack used for a 2013-era tutorial feature and was never used
outside that use case.

Unfortunately, it's sloppy implementation was exposed in the markdown
processor for all users, not just the tutorial use case.

More importantly, it was buggy, in that it did not validate the link
using the standard validation approach used by our other code
interacting with links.

The right solution is simply to remove it.
2020-04-01 14:01:45 -07:00
Stefan Weil d2fa058cc1
text: Fix some typos (most of them found and fixed by codespell).
Signed-off-by: Stefan Weil <sw@weilnetz.de>
2020-03-27 17:25:56 -07:00
Tim Abbott 06c97b5be2 api docs: Render example responses as with JSON codehilite.
This makes the example responses a lot prettier visually.
2020-03-27 00:03:36 -07:00
Tim Abbott 820f0e275e api docs: Redesign visuals for documenting arguments.
The previous system for documenting arguments was very ugly if any of
the examples or descriptions were wrong.  After thinking about this
for a while, I concluded the core problem was that a table was the
wrong design element to use for API parameters, and we'd be much
better off with individual card-type widgets instead.

This rewrites the API arguments documentation implementation to use a
basic sort of card-like system with some basic styling; I think the
result is a lot more readable, and it's a lot more clear how we would
add additional OpenAPI details (like parameter types) to the
documentation.
2020-03-27 00:03:36 -07:00
Anders Kaseorg 7ff9b22500 docs: Convert many http URLs to https.
Signed-off-by: Anders Kaseorg <anders@zulipchat.com>
2020-03-26 21:35:32 -07:00
Rohitt Vashishtha 2fab45e530 bugdown: Use AtomicString in UserMentionPattern.
This fixes the user-mention counterpart of #14080.
2020-03-06 11:35:56 -08:00
Rohitt Vashishtha 7f9d8e1907 bugdown: Use AtomicString in UserGroupMentionPattern.
This fixes the user-group counterpart of #14080.
2020-03-06 11:35:56 -08:00
Rohitt Vashishtha ff5e2b6eb7 bugdown: Avoid hanging list paragraphs being processed as codeblocks.
Previously, the input:

====================
- One
  - Two

    Two continued
====================

Would produce the same output as:

====================
- One
  - Two

```
Two continued
```
====================

This was because our CodeBlockProcessor had a higher priority than
the ListIndentProcessor. This issue was discussed here:
https://chat.zulip.org/#narrow/stream/9-issues/topic/continuation.20paragraphs.20in.20list.20items.
2020-03-03 12:08:19 -08:00
Rohitt Vashishtha cd7396e732 bugdown: Update outdated comment about Zulip's heading support. 2020-03-03 11:54:18 -08:00
Rohitt Vashishtha 62a7e464fb bugdown: Use AtomicString in StreamPattern.
This fixes the stream counterpart of #14080.
2020-03-02 00:03:33 -08:00
Rohitt Vashishtha 245de9e1e2 bugdown: Use AtomicString in StreamTopicPattern.
Fixes #14080.
2020-03-02 00:03:33 -08:00
harshavardhanpb cac4feb263 openapi: Move openapi.py into zerver/openapi.py.
Fixes #14006
2020-02-24 12:21:26 -05:00
Anders Kaseorg e257253e64 emoji_codes: Replace JS module with JSON module.
webpack optimizes JSON modules using JSON.parse("{…}"), which is
faster than the normal JavaScript parser.

Update the backend to use emoji_codes.json too instead of the three
separate JSON files.

Signed-off-by: Anders Kaseorg <anders@zulipchat.com>
2020-02-12 10:09:12 -08:00
Tim Abbott c0712431df openapi: Add hacky support for oneOf parameter types.
This is required for the upcoming type behavior of the "anchor"
parameter.

This change is the minimal work required to have our OpenAPI code not
fail when checking a union-type value of this form.  We'll likely want
to, in the future, do something nicer, but it'd require more extensive
infrastructure for parsing of OpenAPI data that it's worth with our
current approach (we may want to switch to using a library).
2020-01-29 11:24:58 -08:00
Rohitt Vashishtha 630c564fc7 bugdown: Rewrite List Preprocessor logic to properly parse fences.
Previously, we didn't track opening and closing fences separately,
with led to bugs like not parsing a list that was immediately after
a quoted fence; we treated each ``` as a new fence.

This commit rewrites the function to maintain a stack of currently
open fences. If any of the parent fences is a code fence, we do not
insert a new line before a list.

We also add some test cases specifically to test this behavior with
complexly nested lists.

Fixes #13745.
2020-01-27 17:14:27 -08:00
Tim Abbott 7ccc8373e2 bugdown: Fix logic for extracting attachment path_id.
In 3892a8afd8, we restructured the
system for managing uploaded files to a much cleaner model where we
just do parsing inside bugdown.

That new model had potentially buggy handling of cases around both
relative URLs and URLS starting with `realm.host`.

We address this by further rewriting the handling of attachments to
avoid regular expressions entirely, instead relying on urllib for
parsing, and having bugdown output `path_id` values, so that there's
no need for any conversions between formats outside bugdowm.

The check_attachment_reference_change function for processing message
updates is significantly simplified in the process.

The new check on the hostname has the side effect of requiring us to
fix some previously weird/buggy test data.

Co-Author-By: Anders Kaseorg <anders@zulipchat.com>
Co-Author-By: Rohitt Vashishtha <aero31aero@gmail.com>
2019-12-12 20:30:26 -08:00
Anders Kaseorg 8e37862b69 CVE-2019-19775: Close open redirect in thumbnail view.
This closes an open redirect vulnerability, one case of which was
found by Graham Bleaney and Ibrahim Mohamed using Pysa.

Signed-off-by: Anders Kaseorg <anders@zulipchat.com>
2019-12-12 17:29:20 -08:00
Rohitt Vashishtha 3892a8afd8 messages: Set has_attachment correctly using Bugdown.
Previously, we would naively set has_attachment just by searching
the whole messages for strings like `/user_uploads/...`. We now
prevent running do_claim_attachments for messages that obviously
do not have an attachment in them that we previously ran.

For example: attachments in codeblocks or
             attachments that otherwise do not match our link syntax.

The new implementation runs that check on only the urls that
bugdown determines should be rendered. We also refactor some
Attachment tests in test_messages to test this change.

The new method is:

1. Create a list of potential_attachment_urls in Bugdown while rendering.
2. Loop over this list in do_claim_attachments for the actual claiming.
   For saving:
3. If we claimed an attachment, set message.has_attachment to True.
   For updating:
3. If claimed_attachment != message.has_attachment: update has_attachment.

We do not modify the logic for 'unclaiming' attachments when editing.
2019-12-11 11:03:44 -08:00
Rohitt Vashishtha 4674cc5098 bugdown: Set message.has_image while rendering message. 2019-12-11 17:01:41 +05:30
dustinheestand 157c98de99 bugdown: Correctly set has_link attribute on messages.
Now autolinks and message edits affect the has_link attribute on messages.
2019-12-11 17:01:41 +05:30
Rohitt Vashishtha 182503e5c0 bugdown: Move helper methods to InlineInterestingLinksProcessor.
add_a, add_oembed_data and add_embed are only called by
InlineInterestingLinksProcessor and this commit allows
these methods to access self.markdown object.
2019-12-10 15:35:00 -08:00
Rohitt Vashishtha 1229e69e9b bugdown: Reenable -,+ to begin a markdown list.
This commit has a side-effect that we also now allow mixed lists,
but they have different syntax from the commonmark implementation
and our marked output. For example, without the closing li tags:

  Input    Bugdown     Marked
-------------------------------------
         <ul>
- Hello    <li>Hello  <ul><li>Hello</ul>
+ World    <li>World  <ul><li>World
+ Again    <li>Again      <li>Again</ul>
* And      <li>And    <ul><li>And
* Again    <li>Again      <li>Again</ul>
         </ul>

The bugdown render is in line with what a user in #13447 requests.

Fixes #13477.
2019-12-09 16:13:02 -08:00
Vishnu KS c8ede33fc3 openapi: Specify securityScheme for the API in root level.
We used to specify the securityScheme for each REST operation seperately.
This is unecessary as the securityScheme can be specified in root level
and would be automatically applied to all operations. This also prevents
us accidentally not specifying the securityScheme for some operations and
was the case for /users/me/subscriptions PATCH endpoint. The root level
securityScheme can be also overriden in the operational level when
necessary.

swagger.io/docs/specification/authentication/#security
2019-12-06 11:19:08 -08:00
Vishnu KS e08d029dde docs: Use term operation instead of openapi in generate_curl_example.
The term operation makes more sense instead of openapi. OpenAPI
specs defines a unique operation as a combination of a path and a
HTTP method.
2019-12-06 11:19:08 -08:00
Rohitt Vashishtha 9174c636ce bugdown: Store if message has wildcards in MentionData.
We also switch the underlying exctact_mention_text method to use
a regular for loop, as well as make the related methods return
tuples of (names, is_wildcard). This abstraction is hidden from the
MentionData callers behind mention_data.message_has_wildcards().

Concerns #13430.
2019-12-02 12:12:35 -08:00
Vishnu Ks 4c5e9e8eb0 tests: Add support for patching requestBody in curl example test. 2019-11-18 12:23:38 -08:00
Anders Kaseorg cce85f6ec7 dependencies: Upgrade katex from 0.10.2 to 0.11.1.
Signed-off-by: Anders Kaseorg <anders@zulipchat.com>
2019-11-11 16:26:31 -08:00
Vishnu KS 8e9ccdf376 tests: Remove get-raw-message from curl test exclude_list. 2019-10-30 16:49:26 -07:00
Vishnu KS 0af7aa8db3 docs: Make update-stream use curl example system.
new_name and description params should be valid JSON
strings. The format of these params are marked as
json so that the curl example genenrator can convert
them into json strings.
2019-10-18 13:45:30 -07:00
Vishnu Ks 9ac77a8734 docs: Make upload-custom-emoji use curl example system. 2019-10-18 13:45:30 -07:00
Vishnu Ks c35ef2d390 bugdown: Add option to include only selected fields in generate_curl_example. 2019-10-15 15:40:44 -07:00
Vishnu Ks cb64fc8732 bugdown: Show example value for path params in curl example. 2019-10-15 15:40:44 -07:00
Vishnu Ks a03765bbe2 bugdown: Extract out function for getting openapi example value. 2019-10-15 15:40:44 -07:00
Vishnu KS 21ab8c542a bugdown: Cast enum elements to string in APIArgumentsTablePreprocessor.
So that enums other than of type string gets rendered without any error.
2019-10-07 11:42:52 -07:00
Vishnu Ks 30ad650afb bugdown: Don't show path params as data in curl example.
With test added by tabbott.
2019-10-05 18:17:36 -07:00
Vishnu Ks bfd5f4066a bugdown: Remove unecessary call to get_openapi_parameters. 2019-10-05 18:10:55 -07:00
Vishnu Ks dff62a240b bugdown: Rename openapi_example_params to openapi_params in generate_curl_example. 2019-10-05 18:10:55 -07:00
Vishnu Ks f4e3e6068f bugdown: Rename pocket to param in generate_curl_example. 2019-10-05 18:10:55 -07:00
Thomas Ip 574c35c0b8 markdown: Render ordered lists using <ol> markup.
This brings us in line, and also allows us to style these more like
unordered lists, which is visually more appealing.

On the backend, we now use the default list blockprocessor + sane list
extension of python-markdown to get proper list markup; on the
frontend, we mostly return to upstream's code as they have followed
CommonMark on this issue.

Using <ol> here necessarily removes the behaviour of not renumbering
on lists written like 3, 4, 7; hopefully users will be OK with the
change.

Fixes #12822.
2019-09-08 16:42:20 -07:00
Tim Abbott 62c9ea7cf9 linkifiers: Fix problems with capture groups called "name".
Apparently, due to poor naming of the outer capture group we use to
separate the actual match from the surrounding whitespace (etc.) we
use to determine if the syntax is a possible linkifier start/end, if
you created a linkifier using "name" as the capture group, we'd try to
compile a pattern with two capture groups called "name", which would
500, preventing anyone from accessing the organization.
2019-08-30 09:36:14 -07:00
Rohitt Vashishtha 8b443a25b8 markdown: Show link href if title is empty.
Fixes #6221.
2019-08-25 21:36:42 -07:00
Rohitt Vashishtha abe2dab88c markdown: Upgrade to use InlineProcessor for links.
This commit wraps up the major work that we held back when upgrading
py-markdown 2.6.11 to 3.0.1. Since we were making our custom changes
to the link syntax, at the time we stuck to using the old method of
parsing links. This lays the groundwork for further changes to our
link and image link handling, and brings us on par with upstream.

Also, we now better document the ways in which our link handling is
different from upstream.
2019-08-25 21:36:42 -07:00
Rishi Gupta 02cfb47315 exports: Update wording on settings page, /help and /features. 2019-08-22 13:17:03 -07:00
Tim Abbott 26ac3ebd3e openapi: Suggest the -sS options to curl.
These options prevent curl from doing the downloading progress bar
(which is clutter).
2019-08-17 11:35:08 -07:00
Tim Abbott 2366490ffc openapi: Pass api_url to curl example generation.
Our new curl example generation logic was broken, in that it hardcoded
localhost:9991 (without an HTTP method or anything) as the API URL.

It requires a bit of plumbing to make this possible.
2019-08-17 11:35:08 -07:00
Hemanth V. Alluri 5af753d940 api_code_examples: Parse kwargs/mods for example code generation.
Now we can also include extra keyword arguments to specify
modifications in how the example code should be generated
in the generate_code_example template tag.

E.g. generate_code_example(curl, exclude=["param1", "param2"])
2019-08-05 21:27:23 -07:00
Hemanth V. Alluri b20cf095e7 curl: Add code to auto generate cURL examples from OpenAPI docs.
This commit extends api_code_examples.py to support automatically
generating cURL examples from the OpenAPI documentation. This way
work won't have to be repeated and we can also drastically reduce
the chance of introducing faulty cURL examples (via. an automated
test which can now be easily created).
2019-08-05 21:13:14 -07:00
Hemanth V. Alluri f280e9cf84 lib: Rename lib/api_test_helpers.py to openapi/python_examples.py
This will make the contained code easier to find.
2019-08-05 21:06:19 -07:00