45 lines
1.6 KiB
C++
45 lines
1.6 KiB
C++
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* check.cpp :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: rparodi <rparodi@student.42.fr> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2025/05/13 11:25:04 by rparodi #+# #+# */
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/* Updated: 2025/05/13 14:20:47 by rparodi ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include "core.hpp"
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#include <cerrno>
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#include <cstdlib>
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#include <iostream>
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/**
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* @brief function to check if the port is valid
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*
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* @param input input given bu the user
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* @return value between 1 and 65535 if valid, 0 if not (on unsigned 16 bits)
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*/
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unsigned short int valid_port(char *input)
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{
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if (input == NULL)
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return (0);
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for (size_t i = 0; input[i]; i++) {
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if (!isdigit(input[i])) {
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if (DEBUG)
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std::cerr << LOG << CLR_RED << "Error: Not only number in port: " << input << std::endl;
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return (0);
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}
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}
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errno = 0;
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int port = strtol(input, NULL, 10);
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if (errno == ERANGE) {
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if (DEBUG)
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std::cerr << LOG << CLR_RED << "Error: Port out of range: " << input << std::endl;
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return (0);
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}
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if (port < 1 || port > 65535)
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return (0);
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return (port);
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}
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