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handle headers with no key (closes #19996)

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Patch by Cory Benfield.
This commit is contained in:
Benjamin Peterson 2015-01-25 23:30:30 -05:00
parent 7e4b9057b3
commit 155ceaa454
4 changed files with 29 additions and 1 deletions
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11
Lib/email/feedparser.py
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@ -33,7 +33,7 @@ NLCRE_eol = re.compile('(\r\n|\r|\n)\Z')
NLCRE_crack = re.compile('(\r\n|\r|\n)')
# RFC 2822 $3.6.8 Optional fields. ftext is %d33-57 / %d59-126, Any character
# except controls, SP, and ":".
headerRE = re.compile(r'^(From |[\041-\071\073-\176]{1,}:|[\t ])')
headerRE = re.compile(r'^(From |[\041-\071\073-\176]*:|[\t ])')
EMPTYSTRING = ''
NL = '\n'
@ -511,6 +511,15 @@ class FeedParser:
# There will always be a colon, because if there wasn't the part of
# the parser that calls us would have started parsing the body.
i = line.find(':')
# If the colon is on the start of the line the header is clearly
# malformed, but we might be able to salvage the rest of the
# message. Track the error but keep going.
if i == 0:
defect = errors.InvalidHeaderDefect("Missing header name.")
self._cur.defects.append(defect)
continue
assert i>0, "_parse_headers fed line with no : and no leading WS"
lastheader = line[:i]
lastvalue = [line]