Builtins fixed

The builtins wasnt protected, now all data received is protected, the hashmap addition is protected and added functionality of env, export and unset (not implemented in this version). Added fixed details documentation in docs/builtins_fixes.md generated by codex and created tests/builtins_edge_cases.sh to test all the builtins to work correctly
2026-02-09 22:08:45 +01:00
parent 280fa51f94
commit 778e0c0481
15 changed files with 843 additions and 74 deletions
--- a/src/builtins/export/export.c
+++ b/src/builtins/export/export.c
@@ -0,0 +1,79 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   export.c                                           :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: sede-san <sede-san@student.42madrid.com    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2026/02/09 22:05:00 by codex             #+#    #+#             */
+/*   Updated: 2026/02/09 22:05:00 by codex            ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "builtins.h"
+
+static uint8_t	is_valid_identifier(const char *arg, size_t name_len);
+static uint8_t	export_one(char *arg, t_minishell *msh);
+
+uint8_t	builtin_export(
+	t_command cmd,
+	t_minishell *msh
+)
+{
+	uint8_t	status;
+	size_t	i;
+
+	if (cmd.argc == 1)
+		return (builtin_env(cmd, msh));
+	status = EXIT_SUCCESS;
+	i = 0;
+	while (cmd.argv[++i] != NULL)
+		if (export_one(cmd.argv[i], msh) != EXIT_SUCCESS)
+			status = EXIT_FAILURE;
+	return (status);
+}
+
+static uint8_t	is_valid_identifier(
+	const char *arg,
+	size_t name_len
+)
+{
+	size_t	i;
+
+	if (name_len == 0 || arg == NULL)
+		return (0);
+	if (!ft_isalpha(arg[0]) && arg[0] != '_')
+		return (0);
+	i = 0;
+	while (++i < name_len)
+		if (!ft_isalnum(arg[i]) && arg[i] != '_')
+			return (0);
+	return (1);
+}
+
+static uint8_t	export_one(
+	char *arg,
+	t_minishell *msh
+)
+{
+	char	*eq_pos;
+	char	*name;
+	size_t	name_len;
+
+	eq_pos = ft_strchr(arg, '=');
+	name_len = ft_strlen(arg);
+	if (eq_pos != NULL)
+		name_len = (size_t)(eq_pos - arg);
+	if (!is_valid_identifier(arg, name_len))
+		return (ft_eprintf("minishell: export: `%s': not a valid identifier\n",
+				arg), EXIT_FAILURE);
+	name = ft_substr(arg, 0, name_len);
+	if (name == NULL)
+		return (EXIT_FAILURE);
+	if (eq_pos != NULL)
+		set_env(name, eq_pos + 1, msh);
+	else
+		set_env(name, "", msh);
+	free(name);
+	return (EXIT_SUCCESS);
+}