is_cgi function is back and is working

+ in utils added function eval_file_mode(), it returns http errors codes about file

srcs/utils.hpp

@@ -13,6 +13,7 @@
 # include <cctype>		// tolower
 # include <algorithm>	// transform
 # include <cstdio>		// perror, fflush
+# include <unistd.h>	// close, access
 # include "colors.h"	// for debug print_special
 
 # define CR "\r"
@@ -63,6 +64,7 @@ std::string					trim(std::string str, char del);
 http_method					str_to_http_method(std::string &str);
 std::string					http_methods_to_str(unsigned int methods);
 file_type					eval_file_type(const std::string &path);
+size_t						eval_file_mode(std::string path, int mode);
 void						replace_all_substr(std::string &str, const std::string &ori_substr, const std::string &new_substr);
 std::string					str_tolower(std::string str);
 std::string					extract_line(std::string & str, size_t pos = 0, std::string delim = "\n");