42_minishell/utils/ft_get_executable.c

#include "./utils.h"
#include <unistd.h>

char	*ft_get_executable_with_path(t_data *data, const char *name)
{
	char	*path;

	if (access(name, F_OK) != 0)
	{
		data->exit_code = 127;
		ft_eprintf("minishell: %s bash: No such file or directery\n");
		return (NULL);
	}
	if (access(name, X_OK) != 0)
	{
		data->exit_code = 126;
		ft_eprintf("minishell: %s: permission denied\n", name);
		return (NULL);
	}
	path = ft_strdup(name);
	if (path == NULL)
	{
		ft_eprintf("minishell: malloc failed\n");
		return (NULL);
	}
	return (path);
}

char	*ft_get_executable_without_path(t_data *data, const char *name)
{
	char	**tab;
	char	*paths;
	char	*path;
	size_t	i;

	path = NULL;
	paths = get_value_by_key("PATH", data->env);
	if (paths == NULL)
	{
		data->exit_code = 127;
		ft_eprintf("minishell: %s: command not found\n", name);
		return (NULL);
	}
	tab = ft_split(paths, ':');
	if (tab == NULL)
	{
		ft_eprintf("minishell: malloc failed\n");
		return (NULL);
	}
	i = 0;
	while (tab[i] != NULL)
	{
		path = ft_strmerger(3, tab[i], "/", name);
		if (path == NULL)
		{
			ft_eprintf("minishell: malloc failed\n");
			break ;
		}
		if (access(path, X_OK) == 0)
			break ;
		free(path);
		path = NULL;
		i++;
	}
	ft_freer_tab_ultimate(1, tab);
	if (path == NULL)
	{
		data->exit_code = 127;
		ft_eprintf("minishell: %s: command not found\n", name);
	}
	return (path);
}

char	*ft_get_executable(t_data *data, const char *name)
{
	char	*path;

	if (name[0] == '.' || name[0] == '/')
		path = ft_get_executable_with_path(data, name);
	else
		path = ft_get_executable_without_path(data, name);
	return (path);
}