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Diffstat (limited to 'websocketpp/http/impl/request.hpp')
| -rw-r--r-- | websocketpp/http/impl/request.hpp | 191 |
1 files changed, 191 insertions, 0 deletions
diff --git a/websocketpp/http/impl/request.hpp b/websocketpp/http/impl/request.hpp new file mode 100644 index 00000000..311a620f --- /dev/null +++ b/websocketpp/http/impl/request.hpp @@ -0,0 +1,191 @@ +/* + * Copyright (c) 2014, Peter Thorson. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * * Neither the name of the WebSocket++ Project nor the + * names of its contributors may be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL PETER THORSON BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#ifndef HTTP_PARSER_REQUEST_IMPL_HPP +#define HTTP_PARSER_REQUEST_IMPL_HPP + +#include <algorithm> +#include <sstream> +#include <string> + +#include <websocketpp/http/parser.hpp> + +namespace websocketpp { +namespace http { +namespace parser { + +inline size_t request::consume(char const * buf, size_t len) { + size_t bytes_processed; + + if (m_ready) {return 0;} + + if (m_body_bytes_needed > 0) { + bytes_processed = process_body(buf,len); + if (body_ready()) { + m_ready = true; + } + return bytes_processed; + } + + // copy new header bytes into buffer + m_buf->append(buf,len); + + // Search for delimiter in buf. If found read until then. If not read all + std::string::iterator begin = m_buf->begin(); + std::string::iterator end; + + for (;;) { + // search for line delimiter + end = std::search( + begin, + m_buf->end(), + header_delimiter, + header_delimiter+sizeof(header_delimiter)-1 + ); + + m_header_bytes += (end-begin+sizeof(header_delimiter)); + + if (m_header_bytes > max_header_size) { + // exceeded max header size + throw exception("Maximum header size exceeded.", + status_code::request_header_fields_too_large); + } + + if (end == m_buf->end()) { + // we are out of bytes. Discard the processed bytes and copy the + // remaining unprecessed bytes to the beginning of the buffer + std::copy(begin,end,m_buf->begin()); + m_buf->resize(static_cast<std::string::size_type>(end-begin)); + m_header_bytes -= m_buf->size(); + + return len; + } + + //the range [begin,end) now represents a line to be processed. + if (end-begin == 0) { + // we got a blank line + if (m_method.empty() || get_header("Host").empty()) { + throw exception("Incomplete Request",status_code::bad_request); + } + + bytes_processed = ( + len - static_cast<std::string::size_type>(m_buf->end()-end) + + sizeof(header_delimiter) - 1 + ); + + // frees memory used temporarily during request parsing + m_buf.reset(); + + // if this was not an upgrade request and has a content length + // continue capturing content-length bytes and expose them as a + // request body. + + if (prepare_body()) { + bytes_processed += process_body(buf+bytes_processed,len-bytes_processed); + if (body_ready()) { + m_ready = true; + } + return bytes_processed; + } else { + m_ready = true; + + // return number of bytes processed (starting bytes - bytes left) + return bytes_processed; + } + } else { + if (m_method.empty()) { + this->process(begin,end); + } else { + this->process_header(begin,end); + } + } + + begin = end+(sizeof(header_delimiter)-1); + } +} + +inline std::string request::raw() const { + // TODO: validation. Make sure all required fields have been set? + std::stringstream ret; + + ret << m_method << " " << m_uri << " " << get_version() << "\r\n"; + ret << raw_headers() << "\r\n" << m_body; + + return ret.str(); +} + +inline std::string request::raw_head() const { + // TODO: validation. Make sure all required fields have been set? + std::stringstream ret; + + ret << m_method << " " << m_uri << " " << get_version() << "\r\n"; + ret << raw_headers() << "\r\n"; + + return ret.str(); +} + +inline void request::set_method(std::string const & method) { + if (std::find_if(method.begin(),method.end(),is_not_token_char) != method.end()) { + throw exception("Invalid method token.",status_code::bad_request); + } + + m_method = method; +} + +inline void request::set_uri(std::string const & uri) { + // TODO: validation? + m_uri = uri; +} + +inline void request::process(std::string::iterator begin, std::string::iterator + end) +{ + std::string::iterator cursor_start = begin; + std::string::iterator cursor_end = std::find(begin,end,' '); + + if (cursor_end == end) { + throw exception("Invalid request line1",status_code::bad_request); + } + + set_method(std::string(cursor_start,cursor_end)); + + cursor_start = cursor_end+1; + cursor_end = std::find(cursor_start,end,' '); + + if (cursor_end == end) { + throw exception("Invalid request line2",status_code::bad_request); + } + + set_uri(std::string(cursor_start,cursor_end)); + set_version(std::string(cursor_end+1,end)); +} + +} // namespace parser +} // namespace http +} // namespace websocketpp + +#endif // HTTP_PARSER_REQUEST_IMPL_HPP |