Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Add position check for XML declaration #162

Merged
merged 1 commit into from
Jul 7, 2024
Merged
Show file tree
Hide file tree
Changes from all commits
Commits
File filter

Filter by extension

Filter by extension

Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
5 changes: 4 additions & 1 deletion lib/rexml/parsers/baseparser.rb
Original file line number Diff line number Diff line change
Expand Up @@ -635,7 +635,10 @@ def process_instruction(start_position)
@source.position = start_position
raise REXML::ParseException.new(message, @source)
end
if @document_status.nil? and match_data[1] == "xml"
if match_data[1] == "xml"
if @document_status
raise ParseException.new("Malformed XML: XML declaration is not at the start", @source)
end
content = match_data[2]
version = VERSION.match(content)
version = version[1] unless version.nil?
Expand Down
17 changes: 17 additions & 0 deletions test/parse/test_processing_instruction.rb
Original file line number Diff line number Diff line change
Expand Up @@ -39,6 +39,23 @@ def test_garbage_text
pi.content,
])
end

def test_xml_declaration_not_at_document_start
exception = assert_raise(REXML::ParseException) do
parser = REXML::Parsers::BaseParser.new('<a><?xml version="1.0" ?></a>')
while parser.has_next?
parser.pull
end
end

assert_equal(<<~DETAIL.chomp, exception.to_s)
Malformed XML: XML declaration is not at the start
Line: 1
Position: 25
Last 80 unconsumed characters:

DETAIL
end
end
end
end