116 lines
2.8 KiB
C
116 lines
2.8 KiB
C
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* ft_get_executable.c :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: cchauvet <cchauvet@student.42angouleme.fr +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2023/03/27 13:39:48 by cchauvet #+# #+# */
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/* Updated: 2023/04/05 15:09:29 by alouis-j ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include "./utils.h"
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#include <unistd.h>
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char *ft_get_executable_with_path(t_data *data, const char *name)
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{
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char *path;
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if (access(name, F_OK) != 0)
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{
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*data->exit_code = 127;
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ft_eprintf("bozoshell: %s: No such file or directery\n", name);
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return (NULL);
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}
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if (access(name, X_OK) != 0)
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{
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*data->exit_code = 126;
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ft_eprintf("bozoshell: %s: permission denied\n", name);
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return (NULL);
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}
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path = ft_strdup(name);
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if (path == NULL)
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{
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ft_eprintf("bozoshell: malloc failed\n");
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return (NULL);
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}
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return (path);
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}
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static char **ft_get_paths(t_data *data, const char *name)
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{
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char *paths;
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char **tab;
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paths = get_value_by_key("PATH", data->env);
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if (paths == NULL)
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{
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*data->exit_code = 127;
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ft_eprintf("bozoshell: %s: command not found\n", name);
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return (NULL);
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}
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tab = ft_split(paths, ':');
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if (tab == NULL)
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{
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ft_eprintf("bozoshell: malloc failed\n");
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return (NULL);
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}
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return (tab);
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}
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static char *ft_file_is_executable(const char *path, const char *name)
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{
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char *out;
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out = ft_strmerger(3, path, "/", name);
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if (out == NULL)
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{
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ft_eprintf("bozoshell: malloc failed\n");
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free(out);
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return (NULL);
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}
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if (access(out, X_OK) == 0)
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return (out);
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free(out);
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return (NULL);
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}
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static char *ft_get_executable_without_path(t_data *data, const char *name)
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{
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char **paths;
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char *path;
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size_t i;
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paths = ft_get_paths(data, name);
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if (paths == NULL)
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return (NULL);
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path = NULL;
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i = 0;
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while (paths[i] != NULL)
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{
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path = ft_file_is_executable(paths[i], name);
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if (path != NULL)
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break ;
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i++;
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}
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ft_freer_tab_ultimate(1, paths);
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if (path == NULL)
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{
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*data->exit_code = 127;
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ft_eprintf("bozoshell: %s: command not found\n", name);
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}
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return (path);
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}
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char *ft_get_executable(t_data *data, const char *name)
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{
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char *path;
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if (name[0] == '.' || name[0] == '/')
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path = ft_get_executable_with_path(data, name);
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else
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path = ft_get_executable_without_path(data, name);
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return (path);
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}
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