442 lines
13 KiB
C++
442 lines
13 KiB
C++
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* ConfigParser.cpp :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: me <erlazo@student.42.fr> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2022/07/13 22:11:17 by me #+# #+# */
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/* Updated: 2022/07/27 19:27:55 by me ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include "ConfigParser.hpp"
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/***** Stuf to rework
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need to figure out why return std::vector<ServerConfig> * rather than just simple
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not a pointer...
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is there a good reason?
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*/
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// Default
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ConfigParser::ConfigParser()
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{
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std::cout << "Default Constructor\n";
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// don't use yet, you have no idea what the defaults are
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}
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//ConfigParser::ConfigParser(std::string &path)
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//ConfigParser::ConfigParser(char & path)
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ConfigParser::ConfigParser(const char* path)
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{
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std::cout << "Param Constructor\n";
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std::ifstream file;
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std::string buf;
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// std::string tmp; // maybe there's a reason we redeclare vars...
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size_t comment; // just a number so fine to reset
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_content.clear();
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file.open(path);
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if (file.is_open())
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{
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while (!file.eof())
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{
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// if we remove the Emtpy lines as well it simplifies things later...
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getline(file, buf);
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// remove # comments here.
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if ((comment = buf.find_first_of("#")) == std::string::npos)
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{
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// remove empty lines, i think...
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if ((buf.find_first_not_of(" \t")) != std::string::npos)
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_content.append(buf + '\n');
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}
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// else if (comment > 0 && (buf.find_first_not_of(" \t")) != std::string::npos)
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// i think this works cuz it will find # no matter what, so it will find
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// something else first if there is non comment stuff.
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else if (comment > 0 && (buf.find_first_not_of(" \t")) < comment)
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{
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// is there a comment at the end of the line
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std::string tmp = buf.substr(0, comment - 1);
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_content.append(tmp + '\n');
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}
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}
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file.close();
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}
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else
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throw std::invalid_argument("open config");
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}
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ConfigParser::~ConfigParser()
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{
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// do i need to destroy anything, won't it handle itself?
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}
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/*
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ConfigParser & ConfigParser::operator=(const ConfigParser& rhs)
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{
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if (this == rhs) // * & ?
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return (*this); // * ?
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// make some stuff equal
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return (*this);
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}
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*/
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// ok what exactly is the benefit of returning a pointer here...
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//std::vector<Server> * ConfigParser::parse()
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std::vector<Server> ConfigParser::parse()
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{
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// is this the best way to do this? new?
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// std::vector<ServerConfig> *ret = new std::vector<Server>();
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std::vector<ServerConfig> ret;
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size_t prev = 0;
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size_t curr = _content.find_first_not_of(" \t\n", prev);
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if (curr == std::string::npos)
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throw std::invalid_argument("empty config file");
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while (curr != std::string::npos)
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{
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// ok i don't love her way of scoping out the "server" strings...
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prev = _content.find_first_not_of(" \t\n", curr);
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curr = _content.find_first_of(" \t\n", prev);
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std::string key = _conent.substr(prev, curr - prev);
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if (key != "server")
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throw std::invalid_argument("bad config file arguments");
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// Server server = parse_server(&curr);
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// ret->push_back(server);
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// why not this?
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ret.push_back(parse_server(&curr);
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}
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return (ret);
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}
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// might need new names for Prev and Curr, not super descriptive...
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ServerConfig ConfigParser::parse_server(size_t *start)
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{
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ServerConfig ret;
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// size_t key_start;
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// size_t value_end;
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size_t prev = _content.find_first_not_of(" \t\n", *start);
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if (prev == std::string::npos || _content[prev] != '{')
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throw std::invalid_argument("bad config file syntax");
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size_t curr = _content.find_first_of(" \t\n", ++prev);
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// if (curr == std::string::npos) // are there other things to check for?
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// throw std::invalid_argument("bad config file syntax");
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while (curr != std::string::npos) // here curr == { + 1
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{
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// so this moves curr to past the word...
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std::string key = _get_first_word(&curr);
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// now curr is on space after 1st word.
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switch (key)
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{
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case "}":
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// why +1 curr is already after it no?
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*start = _content.find_first_not_of(" \t\n" curr + 1);
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break ;
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case "location":
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// this does assume we have locations in Server... we could change
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// the name but it's so clear...
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ret.location.push_back(parse_location(&curr));
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default:
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std::string values = _get_rest_of_line(&curr);
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// curr now should be \n
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// checking for ; in _set_value, check key and value
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_set_server_values(&ret, key, values); // it handles the throws
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}
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}
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return (ret);
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}
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LocationConfig ConfigParser::parse_location(size_t *start)
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{
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LocationConfig ret;
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size_t key_start;
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size_t value_end;
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size_t prev = _content.find_first_not_of(" \t\n", *start);
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if (prev == std::string::npos || _content[prev] != '{')
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throw std::invalid_argument("bad config file syntax");
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size_t curr = _content.find_first_of(" \t\n", ++prev);
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// if (curr == std::string::npos) // are there other things to check for?
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// throw std::invalid_argument("bad config file syntax");
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while (curr != std::string::npos)
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{
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// so this moves curr to past the word...
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std::string key = _get_first_word(&curr);
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// now curr is on space after 1st word.
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switch (key)
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{
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case "}":
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*start = curr;
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break ;
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default:
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std::string values = _get_rest_of_line(&curr);
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// curr now should be \n
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// checking for ; in _set_value, check key and value
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_set_location_values(&ret, key, values); // it handles the throws
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}
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}
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return (ret);
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}
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// ok you need to think through these throws, when will each occur?
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void ConfigParser::_set_server_values(Server *server, const std::string key, const std::string value)
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{
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// check key for ;
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// check values for ; at end and right number of words depending on key
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if (key.find_first_of(";") != std::string::npos)
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throw std::invalid_argument("bad config file arguments");
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// there shouldn't be any tabs, right? not between values...
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if (value.find_first_of("\t") != std::string::npos)
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throw std::invalid_argument("bad config file arguments");
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size_t i = value.find_first_of(";");
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// so you can't have no ;
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// you can't have just ;
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// and you can't have a ; not at the end or several ;
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// in theory value_find_last_of should find the only ;
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if (i == std::string::npos || (value.find_last_not_of(" \n")) != i \
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|| value.compare(";") == 0)
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throw std::invalid_argument("bad config file arguments");
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// we Trim value.
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// is this valid?
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value = value.substr(0, i - 1);
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std::vector<std::string> tmp = ::split(value, ' ');
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if (tmp.size() == 1)
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{
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switch (key)
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{
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case "server_name":
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server->server_name = value;
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case "listen":
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// ok yea i don't get this one anymore..
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if (value.find_first_of(":") == std::string::npos)
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{
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// why not store as vector<int> [4] ?
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server->host = "0.0.0.0";
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server->value = value;
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}
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else
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{
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// maybe do this differently?
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std::vector<std::string> tmp2 = split(value, ':');
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// i might take issue with this, will see
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if (server->host != "" && server->host != tmp2[0])
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throw std::invalid_argument("bad listen");
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server->host = tmp[0];
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server->port = tmp[1];
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}
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case "root":
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server->root = value;
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case "autoindex":
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server->autoindex = (value == "on" ? true : false);
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case "client_body_limit":
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server->client_body_limit = atoi(value.c_str());
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case "recv_timeout":
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// what is tv_sec and do i need it?
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server->recv_timeout.tv_sec = atoi(value.c_str());
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case "send_timeout":
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server->send_timeout.tv_sec = atoi(value.c_str());
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default :
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throw std::invalid_argument("should only have 1 value");
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// yea ok but it could also be something else like too many
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// args
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}
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}
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else if (tmp.size() > 1)
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{
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switch (key)
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{
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case "index":
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// could run more tests on value content but meh...
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for (unsigned long i = 0; i != tmp.size(); i++)
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server->index.push_back(tmp[i]);
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case "allow_methods":
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// might do something different here
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// like change how methods are stored?
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for (unsigned long i = 0; i != tmp.size(); i++)
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server->allow_methods.push_back(str_to_method_type(tmp[i]));
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case "return":
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// could run more checks here too
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// like tmp.size() must be 2
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// and tmp[0] should be a number and tmp[1] a string?
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server->redirect_status = atoi(tmp[0].c_str());
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server->redirect_uri = tmp[1];
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case "error_page":
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// something more complicated?
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// like make sure ints then 1 string?
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std::string path = tmp[tmp.size() - 1];
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for (unsigned long i = 0; i != tmp.size() - 1; i++)
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{
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int status_code = atoi(tmp[i].c_str());
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// yea IDK i might not want to store this like that...
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if (server->error_pages.find(status_code) != server->error_pages.end())
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continue ;
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server->error_pages[status_code] = path;
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}
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default :
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throw std::invalid_argument("bad config file arguments");
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}
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}
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else
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throw std::invalid_argument("missing value");
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}
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// again not sure i want an int ret
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int ConfigParser::_set_location_values(Location *location, const std::string key, const std::string value)
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{
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// check key for ;
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// check values for ; at end and right number of words depending on key
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if (key.find_first_of(";") != std::string::npos)
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throw std::invalid_argument("bad config file arguments");
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// there shouldn't be any tabs, right? not between values...
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if (value.find_first_of("\t") != std::string::npos)
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throw std::invalid_argument("bad config file arguments");
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size_t i = value.find_first_of(";");
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// so you can't have no ;
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// you can't have just ;
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// and you can't have a ; not at the end or several ;
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// in theory value_find_last_of should find the only ;
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if (i == std::string::npos || (value.find_last_not_of(" \n")) != i \
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|| value.compare(";") == 0)
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throw std::invalid_argument("bad config file arguments");
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// we Trim value.
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// is this valid?
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value = value.substr(0, i - 1);
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std::vector<std::string> tmp = ::split(value, ' ');
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if (tmp.size() == 1)
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{
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switch (key)
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{
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case "root":
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location->root = value;
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case "client_body_limit":
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location->client_body_limit = atoi(value.c_str());
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default :
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throw std::invalid_argument("should only have 1 argument");
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}
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}
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else if (tmp.size() > 1)
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{
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switch (key)
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{
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case "index":
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std::vector<std::string> tmp = split(value, ' ');
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for (unsigned long i = 0; i != tmp.size(); i++)
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location->index.push_back(tmp[i]);
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case "allow_methods":
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std::vector<std::string> tmp = split(value, ' ');
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for (unsigned long i = 0; i != tmp.size(); i++)
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location->allow_methods.push_back(str_to_methodtype(tmp[i]));
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case "cgi_info":
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// ok wtf is all this even doing, figure that out
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unsigned long i = value.find_first_of(" ");
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if (i == std::string::npos)
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throw std::invalid_argument("bad config file arguments");
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// ok why an int now, we gotta be more consistent!
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int j = value.find_first_not_of(" ", i);
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location->cgi_info[value.substr(0, i)] = value.substr(j, value.length());
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default :
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throw std::invalid_argument("bad config file arguments");
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}
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}
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else
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throw std::invalid_argument("missing a value");
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}
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// assumes curr is on a space or \t or \n
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// get first word? next word? word?
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std::string ConfigParser::_get_first_word(size_t *curr)
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{
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size_t start;
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// are these checks excessive?
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if ((start = _content.find_first_not_of(" \t\n", *curr)) == std::string::npos)
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throw std::invalid_argument("bad config file arguments");
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if ((*curr = _content.find_first_of(" \t\n", start)) == std::string::npos)
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throw std::invalid_argument("bad config file arguments");
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std::string key = _content.substr(start, *curr - start);
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return (key);
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}
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// also assumes curr is on a space \t or \n
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std::string ConfigParser::_get_rest_of_line(size_t *curr)
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{
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size_t start;
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if ((start = _content.find_first_not_of(" \t\n", *curr)) == std::string::npos)
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throw std::invalid_argument("bad config file arguments");
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if ((*curr = _content.find_first_of("\n", start)) == std::string::npos)
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throw std::invalid_argument("bad config file arguments");
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std::string values = _content.substr(start, *curr);
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return (values);
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}
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void ConfigParser::_print_content() const
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{
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std::cout << _content;
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}
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// I might need to make my own Exceptions to throw...
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