int Jupiter::HTTP::Server::Data::process_request(HTTPSession &session)
{
Jupiter::ReadableString::TokenizeResult<Jupiter::Reference_String> lines = Jupiter::ReferenceString::tokenize(session.request, STRING_LITERAL_AS_REFERENCE(ENDL));
HTTPCommand command = HTTPCommand::NONE_SPECIFIED;
Content *content = nullptr;
Jupiter::ReferenceString query_string;
Jupiter::ReferenceString first_token;
size_t index = 0;
size_t span;
auto get_line_offset = [&session, &lines](size_t index)
{
size_t offset = 0;
while (index != 0)
offset += lines.tokens[--index].size() + 2;
return offset;
};
while (index != lines.token_count)
{
Jupiter::ReferenceString &line = lines.tokens[index++];
// trim front-end spaces.
span = line.span(" "_jrs);
if (span != 0)
line.shiftRight(span);
if (line.isEmpty()) // end of http request
{
Jupiter::String result(256);
switch (command)
{
case HTTPCommand::GET:
case HTTPCommand::HEAD:
if (content != nullptr)
{
// 200 (success)
Jupiter::ReadableString *content_result = content->execute(query_string);
switch (session.version)
{
default:
case HTTPVersion::HTTP_1_0:
result = "HTTP/1.0 200 OK"_jrs ENDL;
break;
case HTTPVersion::HTTP_1_1:
result = "HTTP/1.1 200 OK"_jrs ENDL;
break;
}
result += "Date: "_jrs;
char *time_header = html_time();
result += time_header;
delete[] time_header;
result += ENDL;
result += "Server: "_jrs JUPITER_VERSION ENDL;
result += Jupiter::StringS::Format("Content-Length: %u" ENDL, content_result->size());
if (session.keep_alive)
result += "Connection: keep-alive"_jrs ENDL;
else
result += "Connection: close"_jrs ENDL;
result += "Content-Type: "_jrs;
if (content->type == nullptr)
result += Jupiter::HTTP::Content::Type::Text::PLAIN;
else
result += *content->type;
if (content->charset != nullptr)
{
result += "; charset="_jrs;
result += *content->charset;
}
result += ENDL;
if (content->language != nullptr)
{
result += "Content-Language: "_jrs;
result += *content->language;
result += ENDL;
}
result += ENDL;
if (command == HTTPCommand::GET)
result += *content_result;
if (content->free_result)
delete content_result;
session.sock.send(result);
}
else
{
// 404 (not found)
switch (session.version)
{
default:
case HTTPVersion::HTTP_1_0:
result = "HTTP/1.0 404 Not Found"_jrs ENDL;
break;
case HTTPVersion::HTTP_1_1:
result = "HTTP/1.1 404 Not Found"_jrs ENDL;
break;
}
char *time_header = html_time();
result += "Date: "_jrs ENDL;
result += time_header;
delete[] time_header;
result += "Server: "_jrs JUPITER_VERSION ENDL;
result += "Content-Length: 0"_jrs ENDL;
if (session.keep_alive)
result += "Connection: keep-alive"_jrs ENDL;
else
result += "Connection: close"_jrs ENDL;
result += ENDL ENDL;
session.sock.send(result);
}
break;
default:
break;
}
if (session.keep_alive == false) // not keep-alive -- will be destroyed on return
break;
if (index == lines.token_count) // end of packet
session.request.erase();
else // end of request -- another request is following
session.request.shiftRight(get_line_offset(index));
if (session.request.find(HTTP_REQUEST_ENDING) != Jupiter::INVALID_INDEX) // there's another full request already received
return Jupiter::HTTP::Server::Data::process_request(session);
break;
}
// Not empty
first_token = line.getToken(0, ' ');
if (first_token.get(first_token.size() - 1) == ':') // header field
{
first_token.truncate(1); // trim trailing ':'
if (first_token.equalsi("HOST"_jrs))
session.host = Jupiter::HTTP::Server::Data::find_host(line.getWord(1, " "));
else if (first_token.equalsi("CONNECTION"_jrs))
{
Jupiter::ReferenceString connection_type = line.getWord(1, " ");
if (connection_type.equalsi("keep-alive"_jrs))
session.keep_alive = Jupiter::HTTP::Server::Data::permit_keept_alive;
}
}
else // command
{
if (first_token.equals("GET"_jrs))
{
command = HTTPCommand::GET;
query_string = line.getWord(1, " ");
span = query_string.find('?'); // repurposing 'span'
if (span == Jupiter::INVALID_INDEX)
{
if (session.host == nullptr)
content = Jupiter::HTTP::Server::Data::find(query_string);
else
content = session.host->find(query_string);
query_string.erase();
}
else
{
if (session.host == nullptr)
content = Jupiter::HTTP::Server::Data::find(query_string.substring(size_t{ 0 }, span));
else
content = session.host->find(query_string.substring(size_t{ 0 }, span));
query_string.shiftRight(span + 1);
// decode query_string here
}
Jupiter::ReferenceString protocol_str = line.getWord(2, " ");
if (protocol_str.equalsi("http/1.0"_jrs))
session.version = HTTPVersion::HTTP_1_0;
else if (protocol_str.equalsi("http/1.1"_jrs))
{
session.version = HTTPVersion::HTTP_1_1;
session.keep_alive = Jupiter::HTTP::Server::Data::permit_keept_alive;
}
}
else if (first_token.equals("HEAD"_jrs))
{
command = HTTPCommand::HEAD;
query_string = line.getWord(1, " ");
span = query_string.find('?'); // repurposing 'span'
if (span == Jupiter::INVALID_INDEX)
{
if (session.host == nullptr)
content = Jupiter::HTTP::Server::Data::find(query_string);
else
content = session.host->find(query_string);
query_string.erase();
}
else
{
if (session.host == nullptr)
content = Jupiter::HTTP::Server::Data::find(query_string.substring(size_t{ 0 }, span));
else
content = session.host->find(query_string.substring(size_t{ 0 }, span));
query_string.shiftRight(span + 1);
// decode query_string here
}
Jupiter::ReferenceString protocol_str = line.getWord(2, " ");
if (protocol_str.equalsi("http/1.0"_jrs))
session.version = HTTPVersion::HTTP_1_0;
else if (protocol_str.equalsi("http/1.1"_jrs))
{
session.version = HTTPVersion::HTTP_1_1;
session.keep_alive = Jupiter::HTTP::Server::Data::permit_keept_alive;
}
}
else
command = HTTPCommand::UNKNOWN;
}
}
return 0;
}
