Huge fixes and stack stuff

1 files changed, 72 insertions, 0 deletions

diff --git a/src/u_path.c b/src/u_path.c
new file mode 100644
index 0000000..b43946f
--- /dev/null
+++ b/src/u_path.c
@@ -0,0 +1,72 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   u_path.c                                           :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: rbousset <marvin@42.fr>                    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2020/02/14 17:19:27 by rbousset          #+#    #+#             */
+/*   Updated: 2020/02/14 17:19:29 by rbousset         ###   ########lyon.fr   */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include <libft.h>
+#include <stddef.h>
+#include <dirent.h>
+#include <limits.h>
+
+#include "s_struct.h"
+#include "u_vars.h"
+
+static void	u_get_fullpath(char fullpath[],
+						const char p_path[],
+						const char d_name[],
+						size_t dstsize)
+{
+	const size_t	path_len = ft_strlen(p_path);
+	const size_t	name_len = ft_strlen(d_name);
+
+	fullpath[0] = C_NUL;
+	if (path_len + name_len < dstsize)
+	{
+		(void)ft_memcpy(fullpath, p_path, path_len);
+		*(fullpath + (path_len)) = '/';
+		ft_memcpy(fullpath + path_len + 1, d_name, name_len);
+		*(fullpath + (path_len + name_len + 1)) = '\0';
+	}
+}
+
+uint8_t		u_search_in_path(char fullpath[],
+							const char com[],
+							size_t dstsize,
+							t_msh *msh)
+{
+	struct dirent	*ent;
+	char			tmp[ARG_MAX];
+	char			*tok_path;
+	DIR				*dir;
+
+	if (u_get_var_value(tmp, "$PATH", ARG_MAX, msh) != 0)
+		return (1);
+	tok_path = ft_strtok(tmp, ":");
+	while (tok_path != NULL)
+	{
+		if ((dir = opendir(tok_path)) != NULL)
+		{
+			while ((ent = readdir(dir)) != NULL)
+			{
+				if (ft_strncmp(com, ent->d_name, ft_strlen(com) + 1) == 0)
+				{
+					u_get_fullpath(fullpath, tok_path, ent->d_name, dstsize);
+					closedir(dir);
+					if (fullpath[0] == C_NUL)
+						return (1);
+					return (0);
+				}
+			}
+			closedir(dir);
+		}
+		tok_path = ft_strtok(NULL, ":");
+	}
+	return (1);
+}