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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* get_cmd_path.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: chuhlig <chuhlig@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2024/12/17 19:19:59 by chuhlig #+# #+# */
/* Updated: 2025/01/15 16:37:18 by dkaiser ### ########.fr */
/* */
/* ************************************************************************** */
#include "libft.h"
#include "minishell.h"
#include <errno.h>
#include <sys/errno.h>
#include <sys/stat.h>
#include <sys/unistd.h>
#include <unistd.h>
static char *get_simple_cmd_path(char *cmd, int *return_code);
static char *get_absolute_cmd_path(char *cmd, t_env *env, int *return_code);
static char *find_in_path(char *cmd, t_env *env, int *return_code);
char **get_split_path(t_env *env);
static int is_directory(char *path);
char *get_cmd_path(char *cmd, t_env *env, int *return_code)
{
if (cmd[0] == '/')
return (get_simple_cmd_path(cmd, return_code));
else if (ft_strchr(cmd, '/'))
return (get_absolute_cmd_path(cmd, env, return_code));
else
return (find_in_path(cmd, env, return_code));
}
static char *get_absolute_cmd_path(char *cmd, t_env *env, int *return_code)
{
char *cur_dir;
char *result;
cur_dir = ft_strjoin(env_get(env, "PWD"), "/");
if (!cur_dir)
return (NULL);
result = ft_strjoin(cur_dir, cmd);
free(cur_dir);
if (!result)
return (error(ENOENT, cmd, 127, return_code));
if (access(result, F_OK) == -1)
{
free(result);
return (error(ENOENT, cmd, 127, return_code));
}
if (access(result, X_OK) == -1)
{
free(result);
return (error(EACCES, cmd, 126, return_code));
}
if (is_directory(cmd))
return (error(EISDIR, cmd, 126, return_code));
return (result);
}
static char *find_in_path(char *cmd, t_env *env, int *return_code)
{
char *cur_path;
char *cmd_path;
char **path;
path = get_split_path(env);
cmd_path = NULL;
while (*path)
{
if (cmd_path)
free(cmd_path);
cur_path = ft_strjoin(*path, "/");
if (!cur_path)
return (NULL);
cmd_path = ft_strjoin(cur_path, cmd);
free(cur_path);
if (!cmd_path)
return (NULL);
if (access(cmd_path, X_OK) != -1)
return (cmd_path);
path++;
}
*return_code = 127;
printf("%s:", cmd);
ft_putstr_fd(" command not found", 2);
return (NULL);
}
static char *get_simple_cmd_path(char *cmd, int *return_code)
{
char *result;
result = ft_strdup(cmd);
if (access(result, F_OK) == -1)
{
free(result);
return (error(EACCES, cmd, 127, return_code));
}
else if (access(result, X_OK) == -1)
{
free(result);
return (error(EACCES, cmd, 126, return_code));
}
if (is_directory(cmd))
return (error(EISDIR, cmd, 126, return_code));
return (result);
}
static int is_directory(char *path)
{
struct stat path_stat;
stat(path, &path_stat);
if ((path_stat.st_mode & S_IFMT) == S_IFDIR)
return (1);
else
return (0);
}
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