Commitb930b8e

LoopinFool

authored and

deanberris

committed

Fix chunk and content-length encoding (#759)

* The entire body has already been placed in partial_parsed, so don't direct the callback to append any more data* Cleaned up indentation.Don't potentially access memory beyond the end of the string buffer.In the case of a partial chunk, exit the loop. Continuing to search for crlf in the middle of a binary data chunk can result in an infinite loop, and wasn't the right logic.

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boost/network/protocol/http/client/connection
- async_protocol_handler.hpp

1 file changed

-8

lines changed

`‎boost/network/protocol/http/client/connection/async_protocol_handler.hpp‎`

Lines changed: 9 additions & 8 deletions

Original file line number	Diff line number	Diff line change
`@@ -361,22 +361,23 @@ struct http_async_protocol_handler {`
`361`	`361`	`for (typename string_type::const_iterator iter =`
`362`	`362`	`std::search(begin, partial_parsed.end(), crlf.begin(), crlf.end());`
`363`	`363`	`iter != partial_parsed.end();`
`364`		`- iter =`
`365`		`-std::search(begin, partial_parsed.end(), crlf.begin(), crlf.end())) {`
	`364`	`+ iter =std::search(begin, partial_parsed.end(), crlf.begin(), crlf.end())) {`
`366`	`365`	`string_typeline(begin, iter);`
`367`	`366`	`if (line.empty()) {`
`368`		`-std::advance(iter,2);`
`369`		`-begin = iter;`
`370`		`-continue;`
	`367`	`+std::advance(iter,2);`
	`368`	`+ begin = iter;`
	`369`	`+continue;`
`371`	`370`	`}`
`372`	`371`	`std::stringstreamstream(line);`
`373`	`372`	`int len;`
`374`	`373`	`stream >> std::hex >> len;`
`375`	`374`	`std::advance(iter,2);`
`376`	`375`	`if (!len)returntrue;`
`377`	`376`	`if (len <= partial_parsed.end() - iter) {`
`378`		`-std::advance(iter, len +2);`
`379`		`- }`
	`377`	`+std::advance(iter, len);`
	`378`	`+ }else {`
	`379`	`+returnfalse;`
	`380`	`+ }`
`380`	`381`	`begin = iter;`
`381`	`382`	`}`
`382`	`383`	`returnfalse;`
`@@ -391,7 +392,7 @@ struct http_async_protocol_handler {`
`391`	`392`	`partial_parsed.append(part_begin, it);`
`392`	`393`	`part_begin = part.begin();`
`393`	`394`	`if (check_parse_body_complete()) {`
`394`		`-callback(boost::asio::error::eof,bytes);`
	`395`	`+callback(boost::asio::error::eof,0);`
`395`	`396`	`}else {`
`396`	`397`	`delegate_->read_some(`
`397`	`398`	`boost::asio::mutable_buffers_1(part.data(), part.size()), callback);`

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Commitb930b8e

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`‎boost/network/protocol/http/client/connection/async_protocol_handler.hpp‎`

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