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html_filter: html escape markdown before filtering

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Fixes the problem where a user sends e.g. "hi <test>" and the "<test>" is
removed because it's seen as a bad html tag.
This commit is contained in:
miruka 2019-10-24 07:27:13 -04:00
parent 42a2d04bb7
commit c4b05befa4
1 changed files with 7 additions and 5 deletions
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12
src/python/html_filter.py
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@ -1,10 +1,10 @@
import html
import re
import mistune
from lxml.html import HtmlElement # nosec
import html_sanitizer.sanitizer as sanitizer
import mistune
from html_sanitizer.sanitizer import Sanitizer
from lxml.html import HtmlElement # nosec
class MarkdownInlineGrammar(mistune.InlineGrammar):
@ -65,11 +65,13 @@ class HtmlFilter:
def from_markdown(self, text: str, outgoing: bool = False) -> str:
return self.filter(self._markdown_to_html(text), outgoing)
return self.filter(self._markdown_to_html(html.escape(text)), outgoing)
def from_markdown_inline(self, text: str, outgoing: bool = False) -> str:
return self.filter_inline(self._markdown_to_html(text), outgoing)
return self.filter_inline(
self._markdown_to_html(html.escape(text)), outgoing,
)
def filter_inline(self, html: str, outgoing: bool = False) -> str: