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feature: added env, setenv & unsetenv builtins

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added -i option & command execution to env
added setenv & unsetenv builtins
This commit is contained in:
Tanguy Maze
2019-10-10 16:56:40 +02:00
parent 58459bc0c1
commit d22bc173f1
4 changed files with 156 additions and 78 deletions
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144
srcs/ms_exec.c
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@@ -6,7 +6,7 @@
/* By: tmaze <tmaze@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2019/09/26 16:25:00 by tmaze #+# #+# */
/* Updated: 2019/09/27 16:52:50 by tmaze ### ########.fr */
/* Updated: 2019/10/10 14:05:31 by tmaze ### ########.fr */
/* */
/* ************************************************************************** */
@@ -36,26 +36,22 @@ char *check_path_slash(char *exec)
int i;
struct stat info;
if (exec && ft_isin(exec, '/') != -1 && ft_isin(exec, '.') == -1)
if ((i = access(exec, F_OK)) != 0)
put_error(exec, "no such file or directory");
if (i != 0)
return (exec);
if ((i = stat(exec, &info)) != 0)
put_error(exec, "can't determine info");
if (i != 0)
return (exec);
if (!S_ISREG(info.st_mode))
{
if ((i = access(exec, F_OK)) != 0)
put_error(exec, "no such file or directory");
if (i != 0)
return (exec);
if ((i = stat(exec, &info)) != 0)
put_error(exec, "can't determine info");
if (i != 0)
return (exec);
if (!S_ISREG(info.st_mode))
{
put_error(exec, "not an executable file");
return (exec);
}
if ((i = access(exec, X_OK)) != 0)
put_error(exec, "permission denied");
put_error(exec, "not an executable file");
return (exec);
}
return (NULL);
if ((i = access(exec, X_OK)) != 0)
put_error(exec, "permission denied");
return (exec);
}
char *check_path_dot(char *exec, t_env *env)
@@ -64,31 +60,28 @@ char *check_path_dot(char *exec, t_env *env)
char *tmp;
char *ret;
if (exec && exec[0] == '.')
{
if ((path = lstgetelem("PWD", env)) == NULL
if ((path = lstgetelem("PWD", env)) == NULL
|| path->val == NULL || (tmp = ft_strjoin(path->val, "/")) == NULL)
{
put_error(exec, "memory error");
return (exec);
}
if ((ret = ft_strjoin(tmp, exec)) == NULL)
put_error(exec, "memory error");
ft_strdel(&tmp);
if (ret == NULL)
return (exec);
if (access(ret, F_OK) == 0)
{
if (access(ret, X_OK) == 0)
return (ret);
put_error(exec, "permission denied");
ft_strdel(&ret);
return (exec);
}
put_error(exec, "no such file or directory");
ft_strdel(&ret);
{
put_error(exec, "memory error");
return (exec);
}
return (NULL);
if ((ret = ft_strjoin(tmp, exec)) == NULL)
put_error(exec, "memory error");
ft_strdel(&tmp);
if (ret == NULL)
return (exec);
if (access(ret, F_OK) == 0)
{
if (access(ret, X_OK) == 0)
return (ret);
put_error(exec, "permission denied");
ft_strdel(&ret);
return (exec);
}
put_error(exec, "no such file or directory");
ft_strdel(&ret);
return (exec);
}
char *check_path(char *exec, t_env *env)
@@ -100,39 +93,56 @@ char *check_path(char *exec, t_env *env)
char *ret;
ret = NULL;
if ((ret = check_path_slash(exec)) != NULL
|| (ret = check_path_dot(exec, env)) != NULL)
return (ret);
if ((path = lstgetelem("PATH", env)) == NULL
|| path->val == NULL
|| (path_elems = ft_strsplit(path->val, ':')) == NULL)
return (NULL);
i = 0;
while (path_elems[i])
if (exec)
{
if ((tmp = ft_strjoin(path_elems[i], "/")) == NULL)
put_error(exec, "memory error");
if (tmp == NULL)
break ;
if ((ret = ft_strjoin(tmp, exec)) == NULL)
if (ft_isin(exec, '/') != -1 && ft_isin(exec, '.') == -1)
{
put_error(exec, "memory error");
ft_strdel(&tmp);
break ;
if ((ret = check_path_slash(exec)) != NULL)
return (ret);
else
return (NULL);
}
ft_strdel(&tmp);
if (access(ret, F_OK) == 0)
if (exec[0] == '.')
{
if (access(ret, X_OK) == 0)
if ((ret = check_path_dot(exec, env)) != NULL)
return (ret);
else
return (NULL);
}
if ((path = lstgetelem("PATH", env)) == NULL
|| path->val == NULL
|| (path_elems = ft_strsplit(path->val, ':')) == NULL)
{
put_error(exec, "could not resolve path");
return (NULL);
}
i = 0;
while (path_elems[i])
{
if ((tmp = ft_strjoin(path_elems[i], "/")) == NULL)
put_error(exec, "memory error");
if (tmp == NULL)
break ;
put_error(exec, "permission denied");
if ((ret = ft_strjoin(tmp, exec)) == NULL)
{
put_error(exec, "memory error");
ft_strdel(&tmp);
break ;
}
ft_strdel(&tmp);
if (access(ret, F_OK) == 0)
{
if (access(ret, X_OK) == 0)
break ;
put_error(exec, "permission denied");
}
ft_strdel(&ret);
i++;
}
ft_strdel(&ret);
i++;
if (path_elems[i] == NULL)
put_error(exec, "command not found");
ft_del_words_tables(&path_elems);
}
if (path_elems[i] == NULL)
put_error(exec, "command not found");
ft_del_words_tables(&path_elems);
return (ret);
}