add extern function for http message parsing

+ wip compare fields server and script
+ g tout cassey

srcs/webserv/parsing_message_http.cpp

@@ -0,0 +1,75 @@
+
+#include "parsing_message_http.hpp"
+
+size_t
+	parse_http_first_line(std::string message, std::vector<std::string> &line)
+{
+	std::vector<std::string>	sline;
+	std::string					sub;
+	std::string					tmp;
+	size_t						pos;
+	size_t						ret;
+
+	// TODO: check for err in substr
+	pos = message.find(CRLF);
+	sub = message.substr(0, pos);
+	sline = ::split(sub, ' ');
+	ret = sline.size();
+	if (ret != 3)
+		return ret;
+	for (int i = 0; i < 3; i++)
+	{
+		tmp = ::trim(sline[0], ' ');
+		tmp = ::trim(tmp, '\r');
+		line.push_back(tmp);
+	}
+	return ret;
+}
+
+std::map<std::string, std::string>
+	parse_http_headers(std::string message)
+{
+	std::map<std::string, std::string>	headers;
+	std::vector<std::string>			list;
+	std::vector<std::string>::iterator	it;
+	std::string							sub;
+	std::string							key;
+	std::string							val;
+	size_t								pos;
+
+	pos = (message).find(CRLF CRLF);
+	sub = (message).substr(0, pos);
+	list = ::split(sub, '\n');
+	// TODO: if (list.begin() is "first line")
+		list.erase(list.begin());
+
+	for (it = list.begin(); it != list.end(); it++)
+	{
+		// TODO: if pattern is not "NAME: value" return error
+		pos = (*it).find(':');
+		key = (*it).substr( 0, pos );
+		key = ::trim(key, ' ');
+		key = ::trim(key, '\r');
+		key = ::str_tolower(key);
+		val = (*it).substr( pos + 1 );
+		val = ::trim(val, ' ');
+		val = ::trim(val, '\r');
+		headers.insert( std::pair<std::string, std::string>(key, val) );
+	}
+	return headers;
+}
+
+std::string
+	parse_http_body(std::string message)
+{
+	std::string							body;
+	size_t								pos;
+
+	pos = message.find(CRLF CRLF);
+	pos += std::string(CRLF CRLF).size();
+	// TODO: copying just like that might fail in case of binary or images
+	body = message.substr(pos);
+
+	return body;
+}
+