pipex/utils.c at main · kamile-ikiz/pipex · GitHub

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/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   utils.c                                            :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: kikiz <kikiz@student.42.fr>                +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2025/03/04 16:22:28 by kikiz             #+#    #+#             */
/*   Updated: 2025/03/09 18:46:26 by kikiz            ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "pipex.h"

void	execute(char *argv, char **envp)
{
	char	**cmd;
	char	*path;

	if (!argv || !*argv)
		cnf(argv);
	cmd = ft_split(argv, ' ');
	path = find_path(cmd[0], envp);
	command_check(argv);
	if (cmd == NULL || cmd[0] == NULL)
		cnf(argv);
	if (!path)
	{
		free(path);
		free_mem(cmd);
		exit(1);
	}
	if (execve(path, cmd, envp) == -1)
	{
		ft_putstr_fd("pipex : command not found: ", 2);
		ft_putendl_fd(argv, 2);
		free_mem(cmd);
		exit(127);
	}
}

void	cnf(char *argv)
{
	ft_putstr_fd("pipex : command not found: ", 2);
	ft_putendl_fd(argv, 2);
	exit(127);
}

char	*find_path(char *cmd, char **envp)
{
	int		i;
	char	**paths;
	char	*slash;
	char	*path;

	i = 0;
	while (ft_strncmp(envp[i], "PATH=", 5) != 0)
		i++;
	paths = ft_split(envp[i] + 5, ':');
	i = 0;
	while (paths[i])
	{
		slash = ft_strjoin(paths[i], "/");
		path = ft_strjoin(slash, cmd);
		free(slash);
		if (access(path, F_OK | X_OK) == 0)
			return (path);
		free(path);
		i++;
	}
	free_mem(paths);
	return (cmd);
}

void	free_mem(char **str)
{
	int	i;

	i = 0;
	while (str[i])
	{
		free(str[i]);
		i++;
	}
	free(str);
}