64 lines
1.2 KiB
Python
64 lines
1.2 KiB
Python
import bleach
|
|
|
|
|
|
allowed_tags = [
|
|
"a",
|
|
"img", # links and images
|
|
"br",
|
|
"p",
|
|
"span",
|
|
"blockquote", # text layout
|
|
"strike",
|
|
"strong",
|
|
"u",
|
|
"em",
|
|
"sup",
|
|
"sub",
|
|
"pre", # text formatting
|
|
"h1",
|
|
"h2",
|
|
"h3",
|
|
"h4",
|
|
"h5",
|
|
"h6", # headings
|
|
"ol",
|
|
"ul",
|
|
"li", # lists
|
|
"table",
|
|
"caption",
|
|
"thead",
|
|
"tbody",
|
|
"th",
|
|
"tr",
|
|
"td", # tables
|
|
]
|
|
allowed_attributes = {
|
|
"*": ["class", "style"],
|
|
"img": ["alt", "src", "title"],
|
|
"a": ["href", "title"],
|
|
"th": ["scope"],
|
|
"ol": ["start"],
|
|
}
|
|
allowed_styles = [
|
|
"color",
|
|
"background-color",
|
|
"height",
|
|
"width",
|
|
"text-align",
|
|
"float",
|
|
"padding",
|
|
"text-decoration",
|
|
]
|
|
|
|
|
|
def validate_html(html: str) -> str:
|
|
"""
|
|
This method takes a string and escapes all non-whitelisted html entries.
|
|
Every field of a model that is loaded trusted in the DOM should be validated.
|
|
During copy and paste from Word maybe some tabs are spread over the html. Remove them.
|
|
"""
|
|
html = html.replace("\t", "")
|
|
return bleach.clean(
|
|
html, tags=allowed_tags, attributes=allowed_attributes, styles=allowed_styles
|
|
)
|