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https://gitlab.archlinux.org/archlinux/aurweb.git
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2b280ea3d8
When sanitizing rendered comments, keep <hr> tags and <br> tags. The former are generated when using "---" in Markdown comments, the latter are used when putting two spaces at the end of a line. Fixes FS#56649.
132 lines
4 KiB
Python
Executable file
132 lines
4 KiB
Python
Executable file
#!/usr/bin/env python3
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import re
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import pygit2
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import sys
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import bleach
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import markdown
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import aurweb.config
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import aurweb.db
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repo_path = aurweb.config.get('serve', 'repo-path')
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commit_uri = aurweb.config.get('options', 'commit_uri')
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class LinkifyPreprocessor(markdown.preprocessors.Preprocessor):
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_urlre = re.compile(r'(\b(?:https?|ftp):\/\/[\w\/\#~:.?+=&%@!\-;,]+?'
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r'(?=[.:?\-;,]*(?:[^\w\/\#~:.?+=&%@!\-;,]|$)))')
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def run(self, lines):
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return [self._urlre.sub(r'<\1>', line) for line in lines]
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class LinkifyExtension(markdown.extensions.Extension):
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def extendMarkdown(self, md, md_globals):
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md.preprocessors.add('linkify', LinkifyPreprocessor(md), '_end')
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class FlysprayLinksPreprocessor(markdown.preprocessors.Preprocessor):
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_fsre = re.compile(r'\b(FS#(\d+))\b')
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_sub = r'[\1](https://bugs.archlinux.org/task/\2)'
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def run(self, lines):
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return [self._fsre.sub(self._sub, line) for line in lines]
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class FlysprayLinksExtension(markdown.extensions.Extension):
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def extendMarkdown(self, md, md_globals):
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preprocessor = FlysprayLinksPreprocessor(md)
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md.preprocessors.add('flyspray-links', preprocessor, '_end')
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class GitCommitsPreprocessor(markdown.preprocessors.Preprocessor):
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_oidre = re.compile(r'(\b)([0-9a-f]{7,40})(\b)')
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_repo = pygit2.Repository(repo_path)
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_head = None
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def __init__(self, md, head):
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self._head = head
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super(markdown.preprocessors.Preprocessor, self).__init__(md)
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def handleMatch(self, m):
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oid = m.group(2)
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if oid not in self._repo:
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return oid
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prefixlen = 12
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while prefixlen < 40:
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if oid[:prefixlen] in self._repo:
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break
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prefixlen += 1
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html = '[`' + oid[:prefixlen] + '`]'
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html += '(' + commit_uri % (self._head, oid[:prefixlen]) + ')'
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return html
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def run(self, lines):
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return [self._oidre.sub(self.handleMatch, line) for line in lines]
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class GitCommitsExtension(markdown.extensions.Extension):
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_head = None
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def __init__(self, head):
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self._head = head
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super(markdown.extensions.Extension, self).__init__()
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def extendMarkdown(self, md, md_globals):
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preprocessor = GitCommitsPreprocessor(md, self._head)
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md.preprocessors.add('git-commits', preprocessor, '_end')
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class HeadingTreeprocessor(markdown.treeprocessors.Treeprocessor):
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def run(self, doc):
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for elem in doc:
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if elem.tag == 'h1':
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elem.tag = 'h5'
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elif elem.tag in ['h2', 'h3', 'h4', 'h5']:
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elem.tag = 'h6'
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class HeadingExtension(markdown.extensions.Extension):
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def extendMarkdown(self, md, md_globals):
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md.treeprocessors.add('heading', HeadingTreeprocessor(md), '_end')
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def get_comment(conn, commentid):
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cur = conn.execute('SELECT PackageComments.Comments, PackageBases.Name '
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'FROM PackageComments INNER JOIN PackageBases '
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'ON PackageBases.ID = PackageComments.PackageBaseID '
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'WHERE PackageComments.ID = ?', [commentid])
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return cur.fetchone()
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def save_rendered_comment(conn, commentid, html):
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conn.execute('UPDATE PackageComments SET RenderedComment = ? WHERE ID = ?',
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[html, commentid])
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def main():
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commentid = int(sys.argv[1])
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conn = aurweb.db.Connection()
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text, pkgbase = get_comment(conn, commentid)
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html = markdown.markdown(text, extensions=['fenced_code',
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LinkifyExtension(),
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FlysprayLinksExtension(),
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GitCommitsExtension(pkgbase),
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HeadingExtension()])
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allowed_tags = (bleach.sanitizer.ALLOWED_TAGS +
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['p', 'pre', 'h4', 'h5', 'h6', 'br', 'hr'])
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html = bleach.clean(html, tags=allowed_tags)
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save_rendered_comment(conn, commentid, html)
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conn.commit()
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conn.close()
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if __name__ == '__main__':
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main()
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