Commit Graph

308 Commits

Author SHA1 Message Date
Anders Kaseorg 70ac144d57 markdown: Replace custom cache decorator with functools.lru_cache.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
2023-02-09 15:46:11 -08:00
David Rosa 2b8dfbfe1f help: Improve relative settings links for documentation on bots.
Fixes the documentation generated from the Markdown macros
{settings_tab|your-bots} and {settings_tab|bot-list-admin} to
match the text labels in the Zulip UI and improves the text of
relative links to explicitly say if we are referring to the Bots
tab of the Personal or Organization settings menu.

Follow-up to #23256.
2023-02-06 15:06:15 -08:00
David Rosa df7e409cd9 help_settings_links: Refactor handleMatch function.
This code needs to be more flexible to improve the documentation
of items in the Personal and Organization settings menu when
using the `{settings_tab|[setting-name]}` Markdownm macro that
provides relative links or step-by-step instructions.

This commit moves the Markdown formatting code to a new function that
receives tuples from `link_mapping` as input. This is a preliminary
step to offer more flexibility than the current approach.
2023-02-06 15:06:15 -08:00
Anders Kaseorg b91788b945 markdown: Replace deprecated UnescapePostprocessor.
See https://github.com/Python-Markdown/markdown/pull/1272.

Signed-off-by: Anders Kaseorg <anders@zulip.com>
2023-02-04 16:36:47 -08:00
Anders Kaseorg da3cf5ea7a ruff: Fix RSE102 Unnecessary parentheses on raised exception.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
2023-02-04 16:34:55 -08:00
Anders Kaseorg df001db1a9 black: Reformat with Black 23.
Black 23 enforces some slightly more specific rules about empty line
counts and redundant parenthesis removal, but the result is still
compatible with Black 22.

(This does not actually upgrade our Python environment to Black 23
yet.)

Signed-off-by: Anders Kaseorg <anders@zulip.com>
2023-02-02 10:40:13 -08:00
Lauryn Menard b64d8e8a52 templates: Remove `base_path` argument from api_arguments_table_generator.
Removes `base_path` argument when making the markdown extension for
parameters in documentation for API endpoints.

This seems to have been originally included for API parameters that
were documented in JSON files, which is no longer in use. Now all
API endpoints in the documentation are documented in
`zerver/openapi/zulip.yaml`.
2023-02-01 13:12:53 -08:00
Lauryn Menard f38d5a6a26 templates: Remove `base_path` argument from api_return_values_generator.
Removes `base_path` argument when making the markdown extension for
return values in documentation for API endpoints.

This seems to have been a copy and paste error in commit d2ee99a2fd
when `zerver/lib/markdown/api_return_values_generator.py` was created.
2023-02-01 13:12:53 -08:00
David Rosa 8d1db6482f help center: Update relative gear menu macro for organization settings.
Renames "Manage organization" to "Organization settings" to reflect
changes in the previous commit.
2023-01-26 10:17:45 -08:00
Anders Kaseorg 4eda29bd86 ruff: Fix RUF005 Consider spread instead of concatenation.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
2023-01-26 10:16:30 -08:00
Anders Kaseorg 7a7513f6e0 ruff: Fix SIM201 Use `… != …` instead of `not … == …`.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
2023-01-23 11:18:36 -08:00
Anders Kaseorg b8b29dc3ad ruff: Fix SIM110 Use `return any(…)` instead of `for` loop.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
2023-01-23 11:18:36 -08:00
Anders Kaseorg ff1971f5ad ruff: Fix SIM105 Use `contextlib.suppress` instead of try-except-pass.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
2023-01-23 11:18:36 -08:00
Anders Kaseorg b0e569f07c ruff: Fix SIM102 nested `if` statements.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
2023-01-23 11:18:36 -08:00
David Rosa f70b321773 help center: Document bot name in org settings link to bot's user card.
Documents link to the bot's user card from the bot's name in
Organization settings > Bots, and information in the bot's user card.

Fixes part of #23970.
2023-01-19 11:13:33 -08:00
Trident Pancake c6ea673cc9 markdown: Update max inline preview from 10 to 24.
The max inline preview limit was previously increased to 10 by #20789.
However, as issue #23624 shows, it's still causing confusion for users
when they include more than 10 links.

Bump this limit up to 24, which is a multiple of the 4 image preview
per line logic.
2023-01-18 14:58:00 -05:00
Anders Kaseorg 17300f196c ruff: Fix ISC003 Explicitly concatenated string.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
2023-01-04 16:25:07 -08:00
Anders Kaseorg 2c5e114f8b ruff: Fix ISC001 Implicitly concatenated string literals on one line.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
2023-01-04 16:25:07 -08:00
Anders Kaseorg b5cad938b8 ruff: Fix DTZ006 `datetime.datetime.fromtimestamp()` without `tz` argument.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
2023-01-04 16:25:07 -08:00
Anders Kaseorg f7e97b1180 ruff: Fix PLW0602 Using global but no assignment is done.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
2023-01-04 16:25:07 -08:00
David Rosa b870d85634 help center: Update "Import from Mattermost".
Updates the help center article to match the style and formatting
of "Import from Slack" and replaces existing content with its
corresponding Markdown macro.
2022-12-30 18:06:44 -08:00
Zixuan James Li a3a0103d86 markdown: Calculate linkifier precedence in topics.
This uses the linkifier index among the list of linkifiers in the
replacement as the priority to order the replacement order for
patterns in the topic. This avoids having multiple overlapping matches
that each produce a link.

The linkifier with the lowest id will be prioritized when its pattern
overlaps with another. Linkifiers are prioritized over raw URLs.

Note that the same algorithm is used for local echoing and the
backend markdown processor.

Fixes #23715.

Signed-off-by: Zixuan James Li <p359101898@gmail.com>
2022-12-13 15:16:20 -08:00
Zixuan James Li 4602c34108 markdown: Correctly retrieve indices for repeated matches.
The same pattern being matched multiple times in a topic cannot be
properly ordered using topic_name.find(match_text) and etc. when there
are multiple matches of the same pattern in the topic.

Signed-off-by: Zixuan James Li <p359101898@gmail.com>
2022-12-13 15:16:20 -08:00
Anders Kaseorg e634e3276a ruff: Fix PLC0414 Import alias does not rename original package.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
2022-12-04 22:11:24 -08:00
Anders Kaseorg 73c4da7974 ruff: Fix N818 exception name should be named with an Error suffix.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
2022-11-17 16:52:00 -08:00
Anders Kaseorg 924d530292 ruff: Fix N813 camelcase imported as lowercase.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
2022-11-16 09:29:11 -08:00
Anders Kaseorg 2876ae8e48 ruff: Fix N803 argument name should be lowercase.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
2022-11-16 09:29:11 -08:00
Anders Kaseorg 46955da3a0 ruff: Fix ANN204 missing return type annotation for __init__.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
2022-11-16 09:29:11 -08:00
Lauryn Menard 9aacb15530 tabbed-sections: Update "via-user-profile" to be "via-user-card". 2022-11-14 12:16:22 -08:00
Alya Abbott 8f6cf65f28 help center: Reorganize and extend the "Logging in" help page.
Also move some instructions from related pages into shared /include files,
with minor tweaks.
2022-10-26 12:28:29 -07:00
Lauryn Menard c9044f7acd recent-topics: Rename to "Recent conversations" in web-app and docs.
Replaces instances of "recent topics" in the web-app and documentation
to be "recent conversations".

Renames both `recent-topics.md` files in the help center to be
`recent-conversations.md` and updates/redirects links to new URL.

Does not update instances of "recent topics" in frontend code comments
and does not update the main overview changelog, for now.

Does not change case study text where "recent topics" was referenced
in a quote, but does change generic text references to be "recent
conversations".
2022-10-21 10:28:19 -07:00
David Rosa d9dd272a78 help: Update documentation on bots.
Adds new tab to `zerver/lib/markdown/tabbed_sections.py` to document
managing bots from both personal settings and organization settings.

Documents adding bots from the organization settings Bots panel.

Separates instructions for deactivating and reactivating a bot from
both personal settings and organization settings.

Fixes a few formatting issues such as missing bold formatting and
heading level.

Fixes: #23066.
2022-10-18 10:16:42 -07:00
Alex Vandiver 5d42a0cb00 linkifiers: Support %20 in URLs for topic links.
9381a3bd45 added support for linkifier pattern URLs containing
`%20`-style escapes, but only did so for the codepath which is used in
the message body -- topic links did not understand them.

Expand the support to include when they are substituted into topics.
2022-10-11 14:31:13 -07:00
Anders Kaseorg 8230324068 markdown: Store ZulipMarkdown in members with the right type.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
2022-10-06 15:15:10 -07:00
Anders Kaseorg 2bd81dd5c9 fenced_code: Avoid sloppy AttributeError handler.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
2022-10-06 15:15:10 -07:00
Anders Kaseorg 3cf91e9e45 markdown: Rename our Markdown subclass to ZulipMarkdown.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
2022-10-06 15:15:10 -07:00
Anders Kaseorg 97be895cf0 markdown: Remove Optional from zulip_rendering_result type.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
2022-10-06 15:15:10 -07:00
Anders Kaseorg d01c99d2ee markdown: Add missing None check in InlineInterestingLinkProcessor.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
2022-10-06 15:15:10 -07:00
Mateusz Mandera 95bc77ae4f help center: Update "SAML authentication" to follow help center guidelines.
Co-authored-by: Alya Abbott <alya@zulip.com>
2022-09-09 10:30:05 -07:00
Alya Abbott ff82c69480 help center: Rewrite Import from Slack documentation. 2022-08-25 15:17:43 -07:00
Anders Kaseorg 4a61e36def CVE-2022-36048: Rewrite only specific local links to relative.
Due to mismatches between the URL parsers in Python and browsers, it
was possible to hoodwink rewrite_local_links_to_relative into
generating links that browsers would interpret as absolute.

Signed-off-by: Anders Kaseorg <anders@zulip.com>
2022-08-24 16:29:09 -07:00
N-Shar-ma ef044b8697 markdown: Update characters allowed before @ and stream mentions.
Now the following characters are allowed before @-mentions and stream
references (starting with #) for proper rendering - {, [, /.

This commit makes the markdown rendering consistent with autocomplete
(anything that is autocompleted is also rendered properly).
2022-08-06 19:29:39 -07:00
Kartik Srivastava 6d514c7f78 markdown: Fix rendering of nested objects in API return values.
`render_table` calls itself recursively when it finds nested
`additionalProperties` (i.e. nested objects) in response schema,
to render their properties.

This fixes `render_table` to call `render_desc` along with
calling itself, to render the description of the nested
`additionalProperties` as well.
2022-08-04 16:34:13 -07:00
Anders Kaseorg 946a0565c6 openapi: Fuse generate_api_title with generate_api_description.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
2022-07-22 16:41:55 -07:00
Mateusz Mandera 2299aa3382 docs: Remove some outdated references to thumbnailing.md doc.
The doc was removed in 405bc8dabf
2022-07-12 17:44:24 -07:00
Anders Kaseorg 8246ee7c57 mypy: Add links to specific mypy bugs.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
2022-07-05 17:54:58 -07:00
Anders Kaseorg feff1d0411 requirements: Upgrade Python requirements.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
2022-07-05 17:54:17 -07:00
Anders Kaseorg 869fe60689 markdown: Parse included blocks in a new parser state.
This fixes inclusion of a multi-paragraph file into a list item.

Followup to commit dc33a0ae67 (#22315).

Signed-off-by: Anders Kaseorg <anders@zulip.com>
2022-06-27 17:37:00 -07:00
Anders Kaseorg dc33a0ae67 markdown: Rewrite include plugin without markdown-include.
markdown-include is GPL licensed.

Also, rewrite it as a block processor, so that it works correctly
inside indented blocks.

Signed-off-by: Anders Kaseorg <anders@zulip.com>
2022-06-26 17:36:31 -07:00
Anders Kaseorg 7f0e11bd06 markdown: Rename preprocessor_priorities module to priorities.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
2022-06-26 17:36:31 -07:00
David Rosa 52ef574d3e help-docs: Fix minor errors in "Link to a message or conversation".
Removes the ":" which have accidentally ended up in the "Get a link
to a specific topic" and "Get a link to a specific stream" headings.

Renames the "Via browser's address bar" tab to "Web" so that it
stays consistent with other help center articles.

Fixes part of #22147.
2022-06-08 12:20:32 -07:00
Anders Kaseorg 6331a314d4 Correctly hyphenate “non-”.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
2022-04-27 22:10:31 -07:00
Anders Kaseorg a2825e5984 python: Use Python 3.8 typing.{Protocol,TypedDict}.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
2022-04-27 12:57:49 -07:00
Anders Kaseorg fd16f97d6b python: Excise None from pointlessly nullable booleans.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
2022-04-27 12:40:14 -07:00
Alex Vandiver 351bdfaf78 preview: Use cache only as a non-durable cache, not an IPC.
The `get_link_embed_data` / `link_embed_data_from_cache` pair as
introduced in c93f1d4eda uses the cache
as a temporary store inside of the `embed_links` worker; this means
that it must be durable storage, or the worker will stall and re-fetch
the same links to preview them.

Switch to plumbing through the fetched URL embed data as an parameter
to the Markdown evaluation which uses them, rather than using the
cache as an intermediary.  This frees up the cache to be merely a
non-durable cache.

As a side-effect, this removes get_cache_with_key, and
link_embed_data_from_cache which was its only callsite.
2022-04-15 14:48:12 -07:00
Alex Vandiver 327ff9ea0f preview: Use a dataclass for the embed data.
This is significantly cleaner than passing around `Dict[str, Any]` all
of the time.
2022-04-15 14:48:12 -07:00
Alex Vandiver 661c333377 markdown: Use named parameters to add_a helper.
This has enough parameters that it benefits from making which is which
explicit.
2022-04-15 14:48:12 -07:00
Alex Vandiver 452a30305d markdown: Clarify url parameter of "add_a" helper. 2022-04-15 14:48:12 -07:00
Lauryn Menard 9f8022de5e help_docs: Add 'About Zulip' to relative help links.
Adds the 'About Zulip' gear menu option to the available
relative link patterns used in help center documentation.
2022-04-12 15:22:58 -07:00
Alya Abbott f04fb51ecc help: Rewrite pages on inviting users and related permissions.
Fixes #21520.

Co-authored-by: Lauryn Menard <lauryn@zulip.com>
2022-03-28 17:00:10 -07:00
Lauryn Menard cbfe2707f4 help_docs: Clarify relative link text for Subscribed streams tab. 2022-03-28 15:13:39 -07:00
Lauryn Menard 182c00248d help_docs: Update various docs related to permissions.
Adds tab for web-public streams in documentation for setting
who can create new streams, as well as some text about why
this is limited to certain roles.

Removes list of actions that can be restricted to full members
due to maintainability concerns for that type of list in the
documentation and replaces it with a short descriptive text
explaining that many settings in Zulip support this restriction.
2022-03-24 11:37:35 -07:00
Alex Vandiver 1ac0035f8c markdown: Allow whitespace overlaps in topic linkifiers.
`prepare_linkifier_pattern`, as of db934be064, adds a match to the
end of the regex, of either the end of string, or a non-word character
-- this is in place of a negative look-ahead, which is no longer
possible in re2.  This causes the regex to consume trailing
whitespace, and thus not be able to match twice in succession with
`pattern.finditer` -- "#1234 #5678" fails to match because the space
is consumed by the first match of the regex.

Rather than use `pattern.finditer`, write own own version, which
rewinds over the non-word character consumed after the match, if any.
This allows the same "after" non-word character to also satisfy the
"before" of the next match.

Fixes #21502.
2022-03-22 15:40:03 -07:00
Lauryn Menard b67288db67 help_docs: Extend options for getting links to Zulip content.
Extends the linking to Zulip documentation to cover:

- Getting URLs to messages via the message timestamp.
- Getting links to topics via the three-dots menu.
- Getting links to streams via right-click context menu.

Creates a new tabbed section for using the browser
address bar to copy URLs.
2022-03-22 12:38:09 -07:00
Tim Abbott f8146cfaa1 help: Fix label for Subscribed tab in stream settings. 2022-03-18 14:28:20 -07:00
Lauryn Menard 6cc818b672 help_docs: Document user management via user profile modal.
Adds documentation for admins to manage users via the user profile
modal for these actions:
- Deactivating a user
- Changing a user's role
- Changing a user's name

Creates two new tab sections because we still want to document
the ability to do these actions through the users section in
the organizational settings modal.

Also cleans up some text in the help center article for changing
a user's role.

Fixes #21318.
Fixes #21415.
2022-03-15 12:35:03 -07:00
Anders Kaseorg 1629d6bfb3 python: Reformat with Black 22 (stable).
Signed-off-by: Anders Kaseorg <anders@zulip.com>
2022-02-18 18:03:13 -08:00
Anders Kaseorg b0ce4f1bce docs: Fix many spelling mistakes.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
2022-02-07 18:51:06 -08:00
Anders Kaseorg df304c40da markdown: Use built-in hex formatting for unicode_emoji_to_codepoint.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
2022-02-03 11:00:04 -08:00
Lauryn Menard cc712dbade api_docs: Add check for extra `additionalProperties` in return vals.
Adds a check for `additionalProperties: true` when there are no
properties listed in the schema.

This currently only happens in one place, but will be helpful for
deduplicating text between the `register-queue` and `get-events`
endpoints.
2022-02-02 17:25:58 -08:00
Puneeth Chaganti d55c137277 emoji: Add yellow_large_square and green_large_square emojis.
Wordle has recently become a thing and it uses green, yellow and white (or
black in dark mode) large square unicode characters to let people share their
gameplay. Zulip converts the white and black large square unicode characters to
emojis, but not the green and yellow ones. This causes the Wordle grid to be
misaligned when shared on Zulip.

This commit adds green and yellow large square emojis to our emoji list to fix
the problem.
2022-02-02 16:26:31 -08:00
Puneeth Chaganti 6beb84b553 emoji: Use str.rjust to pad codepoint strings instead of a loop. 2022-02-02 16:26:30 -08:00
Puneeth Chaganti 0eeb74b3c2 emoji: Fix minor typo in unicode_emoji_to_codepoint comment. 2022-02-02 16:26:28 -08:00
Lauryn Menard a832a8a3af api_docs: Fix enum strings in parameters to have quotes.
Fixes the rendering of enums to show strings with quotation marks,
while integers will continue to be rendered without quotation marks.

This allows for an empty string to be passed as an enum value and be
rendered as such in the documentation. Null will be rendered without
quotation marks, like integer values.
2022-01-27 13:03:20 -08:00
Lauryn Menard 7b1597d4cf api_docs: Format required or optional detail of param object field.
Formats and moves whether a field of an object in a request
parameter is required or optional to be in the same location
and have the same formatting as the general api parameter
documentation.

Also formats any examples within the object detailed
description to be the same as the general api parameter
documentation.

Follow up to #20409.
2022-01-25 11:20:18 -08:00
Lauryn Menard e479acc809 api_docs: Add line break before return value description text.
Adds a line break before the descriptive text for return
values and events in the api documentation in order to
help with readability of descriptions with multiple
paragraphs of descriptive text.

Adjustments made to the CSS of list items in unordered
lists to visually group the first paragraph of text
to any following paragraphs or unordered lists.
2022-01-24 10:02:02 -08:00
Lauryn Menard 7993aed530 api_documentation: Render object details in parameter description.
Adds a check for object in parameter type that will render the details
of the object in the parameter description if they are in the object
definition in the OpenAPI documentation.

Fixes #19424.
2022-01-19 13:04:04 -08:00
Alex Vandiver 19f891968d markdown: Increase the maximum number of image previews per message.
The limit here is purely to prevent breakage in case of a pathological
number of images in a single message; 5 images is entirely possible in
a reasonable message, and causes user confusion when they are not
expended.

Increase the limit to 10 per message.
2022-01-14 11:30:07 -08:00
Steve Howell 4adcaf92f7 refactor: Attach get_stream_name_map to MentionData.
This diff looks slightly noisy, but the main chunk of
code that we moved here has the same logic as before,
and it just gets realm_id from MentionBackend now, instead
of having our markdown processor have to supply it.

We basically want MentionData to be the gatekeeper of
mention data, and then we delegate backend tasks to
MentionBackend.

Soon we will add a cache to MentionBacked, which will
justify this change a bit more.
2021-12-30 11:28:15 -08:00
Steve Howell c6448263c3 refactor: Add MentionBackend.
We will eventually use this to avoid redundant
queries.

The diff is slightly noisy here, but there are no
logic changes.
2021-12-30 11:28:15 -08:00
Steve Howell ea252ab53e refactor: Convert FullNameInfo to a dataclass.
As part of this we no longer query for email, which
is a vestige of when we used emails to identify users
on the frontend.
2021-12-30 11:28:15 -08:00
Steve Howell f5fc348786 mypy: Add explicit types for dbdata references.
When our handlers specifically reference self.md.zulip_db_data,
we now use an explicit type.

We probably want a more robust solution here, such as a semgrep
rule.
2021-12-30 11:28:15 -08:00
Steve Howell df84892aad markdown: Convert DbData to a dataclass. 2021-12-30 11:28:15 -08:00
Steve Howell 4e551f8279 refactor: Introduce get_stream_name_map.
We only need a name -> id map, and the FullNameInfo
type was a lie.
2021-12-30 11:28:15 -08:00
Steve Howell c04a8097f3 mypy: Add EmojiInfo type.
We now serialize still_url as None for non-animated emojis,
instead of omitting the field. The webapp does proper checks
for falsiness here.  The mobile app does not yet use the field
(to my knowledge).

We bump the API version here. More discussion here:

https://chat.zulip.org/#narrow/stream/378-api-design/topic/still_url/near/1302573
2021-12-30 11:28:14 -08:00
Lauryn Menard 5300ad8ca0 api_documentation: Display `null` data type if potential value.
If null is a potential value of data type for a return value or
parameter in the API endpoint, then it is rendered as an option.

This currently relies on the 'nullable' setting in the OpenAPI spec
that was removed in the 3.1.0 release. If/when the OpenAPI version
is updated, then how the `data_type` for parameters and return values
is rendered will need to be reworked.

Fixes #20264.
2021-11-17 13:20:24 -08:00
Alex Vandiver 6a40c17ccf markdown: CSS-escape preview links.
This adds `soupsieve` as an explicit dependency, but intentionally
does not adjust the provision version, as it was already an indirect
dependency.
2021-10-26 18:17:23 -07:00
Alex Vandiver 52f74bbd9b markdown: Run URL preview links through camo.
Not proxying these requests through camo is a security concern.
Furthermore, on the desktop client, any embed image which is hosted on
a server with an expired or otherwise invalid certificate will trigger
a blocking modal window with no clear source and a confusing error
message; see zulip/zulip-desktop#1119.

Rewrite all `message_embed_image` URLs through camo, if it is enabled.
2021-10-26 18:17:23 -07:00
Anders Kaseorg 58920affd4 python: Remove re.UNICODE flag (redundant in Python 3).
https://docs.python.org/3/library/re.html#re.A

Signed-off-by: Anders Kaseorg <anders@zulip.com>
2021-10-22 13:42:29 -07:00
Alex Vandiver 9381a3bd45 linkifiers: Support URL percent-encoded bytes.
Supporting URL percent-encoded bytes is possible using `%%20`, but this
is not necessarily very understandable to end-users, even those that
understand percent encoding.

Allow `%20` in linkifier URL format strings, and transform them into
`%%20` in the pattern just before they are applied in markdown
translation.  Care must be taken here, such that already-escaped `%`s
are not escaped an extra time.

We do this before rendering, and not before storage, as
a simplification; the JS-side linkifier at present only understands
`%(foo)s` and thus needs no changes, and to avoid an un-escaping pass
before showing in the admin UI.
2021-10-22 13:00:20 -07:00
Anders Kaseorg 4839b7ed27 url_preview: Interpret og:image relative to full page URL.
og:image is supposed to be an absolute URL, but some sites incorrectly
provide a relative URL.  In this case, it makes more sense to
interpret it relative to the full page URL after redirects, rather
than relative to just the domain part of the page URL before
redirects.

Signed-off-by: Anders Kaseorg <anders@zulip.com>
2021-10-21 12:20:37 -07:00
Alya Abbott 8045355eee user docs: Document public vs. private stream creation permissions. 2021-10-06 17:33:19 -07:00
Alex Vandiver db934be064 CVE-2021-41115: Use re2 for user-supplied linkifier patterns.
Zulip attempts to validate that the regular expressions that admins
enter for linkifiers are well-formatted, and only contain a specific
subset of regex grammar.  The process of checking these
properties (via a regex!) can cause denial-of-service via
backtracking.

Furthermore, this validation itself does not prevent the creation of
linkifiers which themselves cause denial-of-service when they are
executed.  As the validator accepts literally anything inside of a
`(?P<word>...)` block, any quadratic backtracking expression can be
hidden therein.

Switch user-provided linkifier patterns to be matched in the Markdown
processor by the `re2` library, which is guaranteed constant-time.
This somewhat limits the possible features of the regular
expression (notably, look-head and -behind, and back-references);
however, these features had never been advertised as working in the
context of linkifiers.

A migration removes any existing linkifiers which would not function
under re2, after printing them for posterity during the upgrade; they
are unlikely to be common, and are impossible to fix automatically.

The denial-of-service in the linkifier validator was discovered by
@erik-krogh and @yoff, as GHSL-2021-118.
2021-10-04 21:26:24 +00:00
Pradyumna Sinha 18b36e5b8c markdown/tabbed_sections: Raise exception for missing tab name.
This fixes the issue  where 'None' would appear in the rendered
html in case of a missing tab display_name. Now,
'test-help-documentation' will fail in case of any tab display_name
being missing.

In case of a tab_section with no tabs, currently a single tab with
the name 'null_tab' gets added. Added the display name 'None' for
'null_tab', to keep in line with the existing behaviour.

Fixes #19822
2021-10-01 16:25:17 -07:00
Pradyumna Sinha 78692e9c14 markdown/tabbed_sections: Don't set tab label as 'None' in case of no tabs. 2021-10-01 16:22:11 -07:00
Pradyumna Sinha fe5de4a128 markdown/tabbed_sections: Rename TAB_DISPLAY_NAMES to TAB_SECTION_LABELS. 2021-10-01 16:22:11 -07:00
Kevin Scott 09851ff290 markdown: Document built-in preprocessor priorities for convenience.
Fixes #19810
2021-09-27 10:42:09 -07:00
Alya Abbott c7544d620d user docs: Fix missing tab name on /help/getting-your-organization-started-with-zulip. 2021-09-22 14:29:44 -07:00
Alya Abbott b773048031 user docs: Add documentation for configuring new user defaults.
Also remove a redundant link on customize-settings-for-new-users page.
2021-09-21 16:43:35 -07:00
Eeshan Garg 5839f16969 markdown: Run settings_tab/relative links extensions after include.
Recently, we discovered that our settings_tab/relative Markdown
directives didn't work when they were in a macro that was included
in another Markdown file. Note that without this commit, the
/help/create-your-organization-profile page is broken. This commit
changes the respective priorities of these two extensions such that
these directives are rendered *after* the macro is included in
another file.

Thanks to Alya Abbott for reporting this bug!
2021-09-20 16:57:43 -07:00