added inline environment

corrected env -i crash & SHLVL

.ccls

@@ -0,0 +1,4 @@
+clang
+-Iincludes
+-Ilibft/includes
+%c %h -Wall -Wextra -Werror -g-Wall -Wextra -Werror -g

Makefile

@@ -6,7 +6,7 @@
 #    By: tmaze <tmaze@student.42.fr>                +#+  +:+       +#+         #
 #                                                 +#+#+#+#+#+   +#+            #
 #    Created: 2019/03/27 16:51:02 by tmaze             #+#    #+#              #
-#    Updated: 2019/09/20 11:52:03 by tmaze            ###   ########.fr        #
+#    Updated: 2020/01/30 12:00:42 by tmaze            ###   ########.fr        #
 #                                                                              #
 #******************************************************************************#
 
@@ -36,8 +36,15 @@ OBJDIR	=	objs
 INCDIR	=	includes libft/includes
 
 #	Source files
-SRC	=	main.c		\
-		ms_env.c	\
+SRC	=	main.c			\
+		cmd_env.c		\
+		cmd_setenv.c	\
+		cmd_unsetenv.c	\
+		cmd_cd.c		\
+		cmd_echo.c		\
+		ms_exec.c		\
+		ms_ext.c		\
+		put_error_cd.c
 
 OBJ		=	$(SRC:.c=.o)
 

includes/minishell.h

@@ -6,7 +6,7 @@
 /*   By: tmaze <tmaze@student.42.fr>                +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2018/11/18 13:12:34 by tmaze             #+#    #+#             */
-/*   Updated: 2019/09/20 12:00:04 by tmaze            ###   ########.fr       */
+/*   Updated: 2020/01/26 22:19:25 by tmaze            ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -17,7 +17,26 @@
 # include <sys/stat.h>
 # include "libft.h"
 
-void	lstdelenvelem(void *content, size_t size);
-t_list	*env2lst(char **env);
+# define S_BIN 5
+
+typedef struct		s_builtin
+{
+	char			*cmd;
+	int				(*f)(char **argv, t_env **env);
+}					t_builtin;
+
+int					cmd_env(char **argv, t_env **env);
+int					cmd_setenv(char **argv, t_env **env);
+int					cmd_unsetenv(char **argv, t_env **env);
+int					cmd_cd(char **argv, t_env **env);
+int					cmd_echo(char **argv, t_env **env);
+
+char				**res_ext(char **argv, t_env *env);
+
+int					exec_cmd(char **argv, t_env **env);
+void				*ft_strdel_null(char **s);
+
+void				*put_error_cd(char *file, char *msg);
+int					put_error_cd2(char *file, char *msg);
 
 #endif

libft/Makefile

@@ -6,7 +6,7 @@
 #    By: tmaze <tmaze@student.42.fr>                +#+  +:+       +#+         #
 #                                                 +#+#+#+#+#+   +#+            #
 #    Created: 2018/04/07 12:47:06 by tmaze             #+#    #+#              #
-#    Updated: 2019/03/27 17:46:28 by tmaze            ###   ########.fr        #
+#    Updated: 2020/01/25 16:24:08 by tmaze            ###   ########.fr        #
 #                                                                              #
 #******************************************************************************#
 
@@ -17,7 +17,7 @@ CCSTD =
 NAME = libft.a
 
 SRCS =	ft_memalloc.c	\
-		ft_memdel.c 	\
+		ft_memdel.c		\
 		ft_memset.c		\
 		ft_bzero.c		\
 		ft_memcpy.c		\
@@ -38,13 +38,13 @@ SRCS =	ft_memalloc.c	\
 		ft_iswhitespace.c	\
 		ft_issign.c			\
 		\
-		ft_strnew.c 			\
-		ft_strdel.c 			\
+		ft_strnew.c				\
+		ft_strdel.c				\
 		ft_strclr.c				\
 		ft_striter.c			\
 		ft_striteri.c			\
 		ft_strmap.c				\
-		ft_strmapi.c 			\
+		ft_strmapi.c			\
 		ft_strequ.c				\
 		ft_strnequ.c			\
 		ft_strsub.c				\
@@ -90,7 +90,7 @@ SRCS =	ft_memalloc.c	\
 		ft_putnbr_fd.c			\
 		ft_putstrpad.c			\
 		ft_putnbrpad.c			\
-		ft_putstrn.c 			\
+		ft_putstrn.c			\
 		ft_print_words_tables.c	\
 		ft_putendl2.c			\
 		ft_putendl_fd2.c		\
@@ -123,8 +123,8 @@ SRCS =	ft_memalloc.c	\
 		ft_printf_tools_float.c			\
 		ft_printf_tools_hexa.c			\
 		ft_printf_tools_int.c			\
-		ft_printf_tools_lenght.c 		\
-		ft_printf_tools_malloc_size.c 	\
+		ft_printf_tools_lenght.c		\
+		ft_printf_tools_malloc_size.c	\
 		ft_printf_tools_oct.c			\
 		ft_printf_tools_prec_size.c		\
 		ft_printf_tools_str.c			\
@@ -136,7 +136,17 @@ SRCS =	ft_memalloc.c	\
 		ft_getline.c	\
 		\
 		ft_sort_params.c	\
-		ft_realpath.c
+		ft_realpath.c		\
+		\
+		ft_envaddend.c	\
+		ft_envclean.c	\
+		ft_envdel.c		\
+		ft_envdelelem.c	\
+		ft_envgetelem.c	\
+		ft_envnew.c		\
+		ft_envtochar.c	\
+		ft_envtotab.c	\
+		ft_envupdate.c
 
 SRCDIR	= srcs
 OBJDIR	= objs
@@ -160,6 +170,6 @@ clean:
 
 fclean: clean
 	rm -f $(NAME)
-	rm -rf $(OBJDIR)	
+	rm -rf $(OBJDIR)
 
 re: fclean all

libft/includes/libft.h

@@ -6,7 +6,7 @@
 /*   By: tmaze <tmaze@student.42.fr>                +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2018/04/08 00:12:36 by tmaze             #+#    #+#             */
-/*   Updated: 2019/03/20 16:46:41 by tmaze            ###   ########.fr       */
+/*   Updated: 2019/12/06 09:57:17 by tmaze            ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -119,6 +119,13 @@ typedef struct		s_conv
 	int				str_size;
 }					t_conv;
 
+typedef struct		s_env
+{
+	char			*key;
+	char			*val;
+	struct s_env	*next;
+}					t_env;
+
 /*
 ** Print functions
 */
@@ -364,4 +371,14 @@ int					ft_getline(char **line);
 int					ft_putendl2(char const *s);
 int					ft_putendl_fd2(char const *s, int fd);
 
+void				ft_envdelelem(t_env **elem);
+void				ft_envdel(t_env **env);
+t_env				*ft_envnew(char *env);
+t_env				*ft_envaddend(t_env **alst, t_env *new);
+t_env				*ft_envgetelem(char *key, t_env *env);
+char				*ft_envtochar(t_env *env);
+char				**ft_envtotab(t_env *env);
+void				ft_envclean(t_env **env);
+char				*ft_envupdate(char *key, t_env *env, char *val);;
+
 #endif

libft/srcs/ft_envaddend.c

@@ -0,0 +1,31 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_envaddend.c                                     :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: tmaze <tmaze@student.42.fr>                +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2019/12/05 15:02:33 by tmaze             #+#    #+#             */
+/*   Updated: 2019/12/09 13:00:42 by tmaze            ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+t_env	*ft_envaddend(t_env **alst, t_env *new)
+{
+	t_env *tmp;
+
+	if (new == NULL)
+		return (NULL);
+	if (*alst == NULL)
+		*alst = new;
+	else
+	{
+		tmp = *alst;
+		while (tmp->next)
+			tmp = tmp->next;
+		tmp->next = new;
+	}
+	return (*alst);
+}

libft/srcs/ft_envclean.c

@@ -0,0 +1,32 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_envclean.c                                      :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: tmaze <tmaze@student.42.fr>                +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2019/12/06 09:53:25 by tmaze             #+#    #+#             */
+/*   Updated: 2019/12/06 09:53:47 by tmaze            ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+void	ft_envclean(t_env **env)
+{
+	t_env **it;
+	t_env *tmp;
+
+	it = env;
+	while (*it)
+	{
+		if (ft_strequ((*it)->val, ""))
+		{
+			tmp = *it;
+			*it = tmp->next;
+			ft_envdelelem(&tmp);
+		}
+		else
+			it = &((*it)->next);
+	}
+}

libft/srcs/ft_envdel.c

@@ -0,0 +1,25 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_envdel.c                                        :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: tmaze <tmaze@student.42.fr>                +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2019/12/05 14:51:20 by tmaze             #+#    #+#             */
+/*   Updated: 2019/12/09 13:00:46 by tmaze            ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+void	ft_envdel(t_env **env)
+{
+	t_env *tmp;
+
+	while (*env)
+	{
+		tmp = *env;
+		*env = (*env)->next;
+		ft_envdelelem(&tmp);
+	}
+}

libft/srcs/ft_envdelelem.c

@@ -0,0 +1,23 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_envdelelem.c                                    :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: tmaze <tmaze@student.42.fr>                +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2019/12/05 14:43:45 by tmaze             #+#    #+#             */
+/*   Updated: 2019/12/09 13:00:45 by tmaze            ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+void	ft_envdelelem(t_env **elem)
+{
+	if (elem)
+	{
+		ft_strdel(&((*elem)->key));
+		ft_strdel(&((*elem)->val));
+		ft_memdel((void**)elem);
+	}
+}

libft/srcs/ft_envgetelem.c

@@ -0,0 +1,23 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_envgetelem.c                                    :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: tmaze <tmaze@student.42.fr>                +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2019/12/05 16:46:17 by tmaze             #+#    #+#             */
+/*   Updated: 2019/12/05 16:47:00 by tmaze            ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+t_env	*ft_envgetelem(char *key, t_env *env)
+{
+	t_env	*it;
+
+	it = env;
+	while (it && !ft_strequ(it->key, key))
+		it = it->next;
+	return (it);
+}

libft/srcs/ft_envnew.c

@@ -1,43 +1,29 @@
 /* ************************************************************************** */
 /*                                                                            */
 /*                                                        :::      ::::::::   */
-/*   ms_env.c                                           :+:      :+:    :+:   */
+/*   ft_envnew.c                                        :+:      :+:    :+:   */
 /*                                                    +:+ +:+         +:+     */
 /*   By: tmaze <tmaze@student.42.fr>                +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
-/*   Created: 2019/09/20 11:43:53 by tmaze             #+#    #+#             */
-/*   Updated: 2019/09/20 12:00:38 by tmaze            ###   ########.fr       */
+/*   Created: 2019/12/05 14:54:55 by tmaze             #+#    #+#             */
+/*   Updated: 2019/12/05 17:12:59 by tmaze            ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
-#include "minishell.h"
+#include "libft.h"
 
-void	lstdelenvelem(void *content, size_t size)
+t_env	*ft_envnew(char *env)
 {
-	size = 0;
-	ft_strdel(&(((char**)content)[1]));
-	ft_strdel(&(((char**)content)[0]));
-	ft_memdel(&content);
-}
-
-t_list	*env2lst(char **env)
-{
-	t_list	*ret;
-	t_list	*new;
+	t_env	*ret;
 	int		i;
 
 	i = 0;
 	ret = NULL;
-	while (env[i])
-	{
-		if ((new = (t_list*)ft_memalloc(sizeof(t_list))) == NULL
-			|| (new->content = ft_strsplit(env[i], '=')) == NULL
-			|| ft_lstaddend(&ret, new) == NULL)
-		{
-			ft_lstdel(&ret, &lstdelenvelem);
-			return (NULL);
-		}
+	while (env[i] && env[i] != '=')
 		i++;
-	}
+	if (env[i] == '=' && (ret = (t_env*)ft_memalloc(sizeof(t_env))) != NULL)
+		if ((ret->val = ft_strsub(env, i + 1, ft_strlen(env) - i - 1)) == NULL
+			|| (ret->key = ft_strsub(env, 0, i)) == NULL)
+			ft_envdelelem(&ret);
 	return (ret);
 }

libft/srcs/ft_envtochar.c

@@ -0,0 +1,28 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_envtochar.c                                     :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: tmaze <tmaze@student.42.fr>                +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2019/12/05 17:28:25 by tmaze             #+#    #+#             */
+/*   Updated: 2019/12/09 13:00:44 by tmaze            ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+char	*ft_envtochar(t_env *env)
+{
+	int		size;
+	char	*ret;
+
+	size = ft_strlen(env->key) + ft_strlen(env->val) + 2;
+	if ((ret = ft_strnew(size)) != NULL)
+	{
+		ft_strlcpy(ret, env->key, size);
+		ft_strlcat(ret, "=", size);
+		ft_strlcat(ret, env->val, size);
+	}
+	return (ret);
+}

libft/srcs/ft_envtotab.c

@@ -0,0 +1,41 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_envtotab.c                                      :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: tmaze <tmaze@student.42.fr>                +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2019/12/05 17:34:22 by tmaze             #+#    #+#             */
+/*   Updated: 2019/12/05 17:34:41 by tmaze            ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+char	**ft_envtotab(t_env *env)
+{
+	t_env	*it;
+	char	*new;
+	char	**ret;
+	int		i;
+
+	i = 0;
+	ret = NULL;
+	it = env;
+	while (it && (++i))
+		it = it->next;
+	if ((ret = (char**)ft_memalloc(sizeof(char*) * (i + 1))) == NULL)
+		return (NULL);
+	it = env;
+	i = 0;
+	while (it)
+	{
+		if ((new = ft_envtochar(it)) == NULL)
+			ft_del_words_tables(&ret);
+		if (new == NULL)
+			break ;
+		ret[i++] = new;
+		it = it->next;
+	}
+	return (ret);
+}

libft/srcs/ft_envupdate.c

@@ -0,0 +1,28 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_envupdate.c                                     :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: tmaze <tmaze@student.42.fr>                +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2019/12/05 19:10:38 by tmaze             #+#    #+#             */
+/*   Updated: 2019/12/05 19:10:52 by tmaze            ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+char	*ft_envupdate(char *key, t_env *env, char *val)
+{
+	t_env	*elem;
+	char	*new;
+
+	new = NULL;
+	if ((elem = ft_envgetelem(key, env)) != NULL)
+		if ((new = ft_strdup(val)) != NULL)
+		{
+			ft_strdel(&elem->val);
+			elem->val = new;
+		}
+	return (new);
+}

libft/srcs/ft_strtrim.c

@@ -6,7 +6,7 @@
 /*   By: tmaze <tmaze@student.42.fr>                +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2018/04/07 17:00:34 by tmaze             #+#    #+#             */
-/*   Updated: 2018/04/10 14:15:23 by tmaze            ###   ########.fr       */
+/*   Updated: 2020/01/22 17:51:11 by tmaze            ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 

srcs/cmd_cd.c

@@ -0,0 +1,141 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   cmd_cd.c                                           :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: tmaze <tmaze@student.42.fr>                +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2019/01/07 16:44:40 by tmaze             #+#    #+#             */
+/*   Updated: 2020/01/26 22:17:48 by tmaze            ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "minishell.h"
+
+char	*check_path_slash_cd(char *exec)
+{
+	int			i;
+	struct stat	info;
+	struct stat info2;
+
+	if (exec[0] == '/')
+	{
+		if ((i = access(exec, F_OK)) != 0)
+			return (put_error_cd(exec, "no such file or directory"));
+		if ((i = lstat(exec, &info)) != 0)
+			return (put_error_cd(exec, "can't determine info"));
+		if ((S_ISLNK(info.st_mode)
+			&& ((i = stat(exec, &info2)) != 0 || !S_ISDIR(info2.st_mode)))
+			&& !S_ISDIR(info.st_mode))
+			return (put_error_cd(exec, "not a directory"));
+		if ((i = access(exec, X_OK)) != 0)
+			return (put_error_cd(exec, "permission denied"));
+		return (exec);
+	}
+	return (NULL);
+}
+
+int		cmd_cd_update_env(char *path, t_env **env, char opt)
+{
+	t_env	*pwd;
+	char	*oldpwd;
+	char	*c_path;
+	char	p_path[4096];
+
+	ft_bzero(p_path, 4096);
+	if (!(pwd = ft_envgetelem("PWD", *env)))
+		return (put_error_cd2(path, "env var PWD undefined"));
+	if (getcwd(p_path, 4096) == NULL || (oldpwd = ft_strdup(pwd->val)) == NULL
+		|| ft_realpath(path, &c_path) == NULL)
+		return (put_error_cd2(path, "error"));
+	if (ft_envupdate("PWD", *env, ((opt == 'P') ? p_path : c_path)) == NULL
+		|| ft_envupdate("OLDPWD", *env, oldpwd) == NULL)
+	{
+		ft_strdel(&oldpwd);
+		ft_strdel(&c_path);
+		return (put_error_cd2(path, "error"));
+	}
+	ft_strdel(&oldpwd);
+	ft_strdel(&c_path);
+	return (0);
+}
+
+int		cmd_cd_core(char *path, t_env **env, char opt)
+{
+	t_env	*pwd;
+
+	if (check_path_slash_cd(path) == NULL)
+		return (1);
+	if (chdir(path) == -1
+		|| (pwd = ft_envgetelem("PWD", *env)) == NULL)
+	{
+		put_error_cd(path, "error");
+		return (1);
+	}
+	return (cmd_cd_update_env(path, env, opt));
+}
+
+char	cd_getparams(char **argv, size_t *i)
+{
+	char	ret[2];
+	size_t	j;
+
+	ret[1] = '\0';
+	ret[0] = 'L';
+	*i = 0;
+	while (argv[++(*i)] && argv[*i][0] == '-' && ft_strlen(argv[*i]) > 1)
+	{
+		j = 1;
+		while (argv[*i][j] && (argv[*i][j] == 'L' || argv[*i][j] == 'P'))
+			ret[0] = argv[*i][j++];
+		if (argv[*i][j] && argv[*i][j] != 'L' && argv[*i][j] != 'P')
+		{
+			ret[0] = argv[*i][j];
+			put_error_cd(ret, "invalid option");
+			put_error_cd("usage", "cd [-L|-P] [dir]");
+			ret[0] = '\0';
+			break ;
+		}
+	}
+	return (ret[0]);
+}
+
+int		cmd_cd_switchboard(char **av, t_env **env, char opt, int i)
+{
+	t_env	*e;
+	char	*p;
+	int		ret;
+
+	if ((!av[i] && (e = ft_envgetelem("HOME", *env)) != NULL && e->val
+		!= NULL) || (av[i] && av[i][0] == '-'
+		&& (e = ft_envgetelem("OLDPWD", *env)) != NULL))
+		return (cmd_cd_core(e->val, env, opt));
+	else if (av[i] && av[i][0] == '/')
+		return (cmd_cd_core(av[i], env, opt));
+	else if (av[i] && av[i][0] != '/'
+		&& (e = ft_envgetelem("PWD", *env)) != NULL && e->val != NULL)
+	{
+		if ((p = ft_strnew(ft_strlen(e->val) + ft_strlen(av[i]) + 1)) == NULL)
+			put_error_cd(av[i], "memory error");
+		if (p == NULL)
+			return (1);
+		ft_strcpy(p, e->val);
+		p[ft_strlen(p)] = '/';
+		ft_strcat(p, av[i]);
+		ret = cmd_cd_core(p, env, opt);
+		ft_strdel(&p);
+		return (ret);
+	}
+	return (1);
+}
+
+int		cmd_cd(char **argv, t_env **env)
+{
+	size_t	i;
+	char	opt;
+
+	i = 0;
+	if ((opt = cd_getparams(argv, &i)) == '\0')
+		return (1);
+	return (cmd_cd_switchboard(argv, env, opt, i));
+}

srcs/cmd_echo.c

@@ -0,0 +1,25 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   cmd_echo.c                                         :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: tmaze <tmaze@student.42.fr>                +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2019/09/20 14:42:30 by tmaze             #+#    #+#             */
+/*   Updated: 2019/11/02 23:04:23 by tmaze            ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "minishell.h"
+
+int	cmd_echo(char **argv, t_env **env)
+{
+	int	i;
+
+	(void)env;
+	i = 1;
+	while (argv[i])
+		ft_printf("%s ", argv[i++]);
+	ft_putchar('\n');
+	return (0);
+}

srcs/cmd_env.c

@@ -0,0 +1,95 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   cmd_env.c                                          :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: tmaze <tmaze@student.42.fr>                +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2019/09/20 14:33:48 by tmaze             #+#    #+#             */
+/*   Updated: 2020/01/30 15:41:08 by tmaze            ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "minishell.h"
+
+static void	put_env(t_env *env)
+{
+	t_env	*it;
+
+	it = env;
+	while (it)
+	{
+		ft_printf("%s=", it->key);
+		if (it->val)
+			ft_printf("%s", it->val);
+		ft_putchar('\n');
+		it = it->next;
+	}
+}
+
+t_env		*envcpy(t_env *env)
+{
+	t_env	*cpy;
+
+	cpy = NULL;
+	if (env != NULL && (cpy = (t_env*)ft_memalloc(sizeof(t_env))) != NULL)
+		if ((cpy->key = ft_strdup(env->key)) == NULL
+			|| (cpy->val = ft_strdup(env->val)) == NULL)
+			ft_envdelelem(&cpy);
+	return (cpy);
+}
+
+int			env_cleanup(t_env *env_cp, int code)
+{
+	ft_envdel(&env_cp);
+	if (code == 2)
+		ft_putstr_fd("minishell: env: Env copy error\n", 2);
+	return (code);
+}
+
+t_env		*inline_env(char **argv, int *i, t_env **env_cp)
+{
+	t_env	*new;
+
+	while (ft_strchr(argv[*i], '='))
+	{
+		if ((new = ft_envnew(argv[*i])) == NULL)
+		{
+			ft_printf("env: memory error\n");
+			ft_envdel(env_cp);
+			break ;
+		}
+		ft_envaddend(env_cp, new);
+		(*i)++;
+	}
+	return (*env_cp);
+}
+
+int			cmd_env(char **argv, t_env **env)
+{
+	int		i;
+	t_env	*it;
+	t_env	*new;
+	t_env	*env_cp;
+
+	i = 1;
+	if (!(env_cp = NULL) && !ft_strequ(argv[i], "-i") && (env != NULL))
+	{
+		it = *env;
+		while (it)
+		{
+			if ((new = envcpy(it)) == NULL)
+				return (env_cleanup(env_cp, 2));
+			ft_envaddend(&env_cp, new);
+			it = it->next;
+		}
+	}
+	else if (ft_strequ(argv[i], "-i"))
+		i++;
+	inline_env(argv, &i, &env_cp);
+	if (argv[i])
+		exec_cmd(argv + i, &env_cp);
+	else
+		put_env(env_cp);
+	return (env_cleanup(env_cp, 0));
+}

srcs/cmd_setenv.c

@@ -0,0 +1,39 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   cmd_setenv.c                                       :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: tmaze <tmaze@student.42.fr>                +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2019/09/20 14:41:08 by tmaze             #+#    #+#             */
+/*   Updated: 2019/11/10 21:38:30 by tmaze            ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "minishell.h"
+
+int	cmd_setenv(char **argv, t_env **env)
+{
+	t_env	*new;
+	t_env	*tmp;
+
+	if (argv[1] && (new = ft_envnew(argv[1])) != NULL)
+	{
+		if (argv[1] && (tmp = ft_envgetelem(new->key, *env)) != NULL)
+		{
+			ft_strdel(&(tmp->val));
+			tmp->val = new->val;
+			ft_strdel(&(new->key));
+			ft_memdel((void**)&new);
+		}
+		else
+			ft_envaddend(env, new);
+		ft_envclean(env);
+		return (0);
+	}
+	else if (argv[1] && argv[1][0] != '=' && !ft_strchr(argv[1], '='))
+		ft_printf("minishell: setenv: memory error\n");
+	else
+		ft_printf("usage: setenv [KEY]=[value]\n");
+	return (1);
+}

srcs/cmd_unsetenv.c

@@ -0,0 +1,39 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   cmd_unsetenv.c                                     :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: tmaze <tmaze@student.42.fr>                +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2019/09/20 14:42:01 by tmaze             #+#    #+#             */
+/*   Updated: 2019/11/10 15:52:09 by tmaze            ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "minishell.h"
+
+int	cmd_unsetenv(char **argv, t_env **env)
+{
+	t_env	**it;
+	t_env	*tmp;
+
+	it = env;
+	if (!argv[1])
+	{
+		ft_printf("usage: unsetenv [KEY]\n");
+		return (1);
+	}
+	while (*it)
+	{
+		if (ft_strequ((*it)->key, argv[1]))
+		{
+			tmp = *it;
+			*it = tmp->next;
+			ft_envdelelem(&tmp);
+			return (0);
+		}
+		it = &((*it)->next);
+	}
+	ft_printf("Entry %s not found\n", argv[1]);
+	return (1);
+}

srcs/main.c

@@ -6,49 +6,129 @@
 /*   By: tmaze <tmaze@student.42.fr>                +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2019/09/19 17:08:46 by tmaze             #+#    #+#             */
-/*   Updated: 2019/09/20 11:58:04 by tmaze            ###   ########.fr       */
+/*   Updated: 2020/01/30 13:47:35 by tmaze            ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
 #include "minishell.h"
 
-void	put_env(t_list *env)
+t_env	*def_env(void)
 {
-	t_list	*it;
+	t_env	*ret;
+	t_env	*n;
+	char	p[PATH_MAX];
 
-	it = env;
-	while (it)
+	n = ft_memalloc(sizeof(t_env));
+	if (n != NULL && ((n->key = ft_strnew(3)) == NULL || !getcwd(p, PATH_MAX)))
+		ft_envdelelem(&n);
+	if (n != NULL)
+		ft_strcpy(n->key, "PWD");
+	if (n != NULL && (n->val = ft_strdup(p)) == NULL)
+		ft_envdelelem(&n);
+	if (n != NULL)
+		ft_envaddend(&ret, n);
+	n = ft_memalloc(sizeof(t_env));
+	if (n != NULL && (n->key = ft_strnew(5)) == NULL)
+		ft_envdelelem(&n);
+	if (n != NULL)
+		ft_strcpy(n->key, "SHLVL");
+	if (n != NULL && (n->val = ft_strdup("1")) == NULL)
+		ft_envdelelem(&n);
+	if (n != NULL)
+		ft_envaddend(&ret, n);
+	return (ret);
+}
+
+char	*inc_shlvl(char **shlvl)
+{
+	char	*ret;
+
+	if ((ret = ft_itoa(ft_atoi(*shlvl) + 1)) != NULL)
 	{
-		ft_printf("%s=", ((char**)it->content)[0]);
-		if (((char**)it->content)[1])
-			ft_printf("%s", ((char**)it->content)[1]);
-		ft_putchar('\n');
-		it = it->next;
+		ft_strdel(shlvl);
+		*shlvl = ret;
 	}
+	return (ret);
+}
+
+t_env	*env2lst(char **env)
+{
+	t_env	*ret;
+	t_env	*new;
+	int		i;
+
+	i = 0;
+	ret = NULL;
+	while (env[i])
+	{
+		if ((new = ft_envnew(env[i])) != NULL)
+		{
+			if (ft_strequ(new->key, "SHLVL") && ft_str_is_numeric(new->val))
+				inc_shlvl(&new->val);
+			ft_envaddend(&ret, new);
+		}
+		else
+		{
+			ft_envdelelem(&new);
+			ft_envdel(&ret);
+			return (NULL);
+		}
+		i++;
+	}
+	if (i == 0 && ret == NULL && (ret = def_env()) == NULL)
+		ft_printf("Env: Memory Error\n");
+	return (ret);
+}
+
+void	check_exec(char **argv, t_env *env)
+{
+	int					i;
+	static t_builtin	built[S_BIN] = {{"env", &cmd_env}, {"cd", &cmd_cd}
+								, {"setenv", &cmd_setenv}, {"echo", &cmd_echo}
+								, {"unsetenv", &cmd_unsetenv}};
+
+	i = -1;
+	while (++i < S_BIN)
+		if (ft_strequ(argv[0], built[i].cmd))
+		{
+			built[i].f(argv, &env);
+			break ;
+		}
+	if (i == S_BIN)
+		exec_cmd(argv, &env);
+}
+
+int		cleanup(char **argv, t_env *env)
+{
+	ft_del_words_tables(&argv);
+	ft_envdel(&env);
+	return (0);
 }
 
 int		main(void)
 {
 	extern char	**environ;
-	t_list		*env;
+	char		**argv;
+	t_env		*env;
 	char		*cmd;
 
-	env = NULL;
 	if ((env = env2lst(environ)) == NULL)
 		return (2);
 	while (1)
 	{
-		cmd = NULL;
 		ft_printf("%s$>%s ", FT_COLOR_GREEN, FT_RESET);
-		if (ft_getline(&cmd) >= 0)
+		if (ft_getline(&cmd) >= 0 && cmd != NULL
+			&& (argv = ft_strsplit(cmd, ' ')) != NULL && !ft_strdel_null(&cmd))
 		{
-			ft_printf("%s\n", cmd);
-			if (ft_strequ(cmd, "env"))
-				put_env(env);
+			if ((res_ext(argv, env)) != NULL)
+			{
+				if (ft_strequ(argv[0], "exit"))
+					return (cleanup(argv, env));
+				check_exec(argv, env);
+			}
 		}
 		ft_strdel(&cmd);
-		break ;
+		ft_del_words_tables(&argv);
 	}
-	ft_lstdel(&env, &lstdelenvelem);
 	return (0);
 }

srcs/ms_exec.c

@@ -0,0 +1,183 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ms_exec.c                                          :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: tmaze <tmaze@student.42.fr>                +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2019/09/26 16:25:00 by tmaze             #+#    #+#             */
+/*   Updated: 2020/01/30 11:48:25 by tmaze            ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "minishell.h"
+
+int		ft_isin(char *str, char c)
+{
+	int	i;
+
+	i = 0;
+	while (str && str[i])
+		if (str[i++] == c)
+			return (i - 1);
+	return (-1);
+}
+
+void	*put_error(char *file, char *msg)
+{
+	ft_putstr("minishell: ");
+	ft_putstr(file);
+	ft_putstr(": ");
+	ft_putendl(msg);
+	return (NULL);
+}
+
+char	*check_path_slash(char *exec)
+{
+	int			i;
+	struct stat	info;
+
+	if ((i = access(exec, F_OK)) != 0)
+		put_error(exec, "no such file or directory");
+	if (i != 0)
+		return (NULL);
+	if ((i = stat(exec, &info)) != 0)
+		put_error(exec, "can't determine info");
+	if (i != 0)
+		return (NULL);
+	if (!S_ISREG(info.st_mode))
+	{
+		put_error(exec, "not an executable file");
+		return (NULL);
+	}
+	if ((i = access(exec, X_OK)) != 0)
+		put_error(exec, "permission denied");
+	if (i != 0)
+		return (NULL);
+	return (exec);
+}
+
+char	*check_path_dot(char *exec, t_env *env)
+{
+	t_env	*path;
+	char	*tmp;
+	char	*ret;
+
+	if ((path = ft_envgetelem("PWD", env)) == NULL
+		|| path->val == NULL || (tmp = ft_strjoin(path->val, "/")) == NULL)
+		return (put_error(exec, "memory error"));
+	if ((ret = ft_strjoin(tmp, exec)) == NULL)
+		put_error(exec, "memory error");
+	ft_strdel(&tmp);
+	if (ret == NULL)
+		return (NULL);
+	if (access(ret, F_OK) == 0)
+	{
+		if (access(ret, X_OK) == 0)
+			return (exec);
+		ft_strdel(&ret);
+		return (put_error(exec, "permission denied"));
+	}
+	ft_strdel(&ret);
+	return (put_error(exec, "no such file or directory"));
+}
+
+void	*ft_strdel_null(char **s)
+{
+	ft_strdel(s);
+	return (NULL);
+}
+
+char	*check_path_elems(char **path_elems, char *exec)
+{
+	int		i;
+	char	*tmp;
+	char	*ret;
+
+	i = -1;
+	ret = NULL;
+	while (path_elems[++i])
+	{
+		if ((tmp = ft_strjoin(path_elems[i], "/")) == NULL
+			&& !put_error(exec, "memory error"))
+			break ;
+		if ((ret = ft_strjoin(tmp, exec)) == NULL
+			&& !put_error(exec, "memory error") && !ft_strdel_null(&tmp))
+			break ;
+		if (!ft_strdel_null(&tmp) && access(ret, F_OK) == 0)
+		{
+			if (access(ret, X_OK) == 0)
+				break ;
+			ft_strdel(&ret);
+			ft_del_words_tables(&path_elems);
+			return (put_error(exec, "permission denied"));
+		}
+		ft_strdel(&ret);
+	}
+	return (ret);
+}
+
+char	*check_path(char *exec, t_env *env)
+{
+	size_t	i;
+	t_env	*path;
+	char	**path_elems;
+	char	*ret;
+
+	ret = NULL;
+	if (exec)
+	{
+		if (ft_isin(exec, '/') != -1 && ft_isin(exec, '.') == -1)
+			return (check_path_slash(exec));
+		if (exec[0] == '.')
+			return (check_path_dot(exec, env));
+		if ((path = ft_envgetelem("PATH", env)) == NULL
+			|| path->val == NULL
+			|| (path_elems = ft_strsplit(path->val, ':')) == NULL)
+			return (put_error(exec, "could not resolve path"));
+		i = 0;
+		if ((ret = check_path_elems(path_elems, exec)) == NULL)
+		{
+			ft_del_words_tables(&path_elems);
+			return (put_error(exec, "command not found"));
+		}
+		ft_del_words_tables(&path_elems);
+	}
+	return (ret);
+}
+
+void	exec_cmd_child(char *path, char **argv, char **env_tab, t_env **env)
+{
+	execve(path, argv, env_tab);
+	ft_putendl_fd("minishell: error", 1);
+	if (ft_strcmp(path, argv[0]) != 0)
+		ft_strdel(&path);
+	ft_del_words_tables(&env_tab);
+	ft_envdel(env);
+	exit(-1);
+}
+
+int		exec_cmd(char **argv, t_env **env)
+{
+	int		ret;
+	char	**env_tab;
+	char	*path;
+
+	if ((env_tab = ft_envtotab(*env)) == NULL)
+		return (-1);
+	if ((path = check_path(argv[0], *env)) == NULL)
+		ft_del_words_tables(&env_tab);
+	if (path == NULL)
+		return (-1);
+	if ((ret = fork()) == 0)
+		exec_cmd_child(path, argv, env_tab, env);
+	else if (ret == -1)
+		ft_putendl_fd("minishell: error", 1);
+	if (ret == -1)
+		return (-1);
+	waitpid(ret, NULL, 0);
+	ft_del_words_tables(&env_tab);
+	if (ft_strcmp(path, argv[0]) != 0)
+		ft_strdel(&path);
+	return (0);
+}

srcs/ms_ext.c

@@ -0,0 +1,117 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ms_ext.c                                           :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: tmaze <tmaze@student.42.fr>                +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2019/10/25 18:21:47 by tmaze             #+#    #+#             */
+/*   Updated: 2020/01/30 15:42:17 by tmaze            ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "minishell.h"
+
+void	*return_null(char *msg)
+{
+	ft_printf("%s\n", msg);
+	return (NULL);
+}
+
+void	ft_strreplace(char **dst, char *src, int *index, t_env *elem)
+{
+	if (*dst != NULL)
+		ft_strdel(dst);
+	*dst = src;
+	*index = ft_strlen(elem->val);
+}
+
+t_env	*search_key(t_env *env, char *cmd, int index)
+{
+	t_env	*it;
+	t_env	*ret;
+	int		i;
+	int		j;
+
+	it = env;
+	ret = NULL;
+	while (it && cmd[index + 1])
+	{
+		i = 0;
+		j = index;
+		while (it->key[i] && cmd[j] && it->key[i] == cmd[j])
+		{
+			i++;
+			j++;
+		}
+		if (!it->key[i] && (!ret || ft_strlen(it->key) > ft_strlen(ret->key)))
+			ret = it;
+		it = it->next;
+	}
+	return (ret);
+}
+
+char	*replace_env(char *src, t_env *elem, int key_size, int i)
+{
+	char	*ret;
+	int		res_len;
+
+	res_len = ft_strlen(src) - key_size + ft_strlen(elem->val);
+	ft_printf("size replace: %d\n", res_len);
+	if ((ret = ft_strnew(res_len)) != NULL)
+	{
+		ft_strncpy(ret, src, i);
+		ft_strlcat(ret, elem->val, res_len + 1);
+		ft_strlcat(ret, src + key_size, res_len + 1);
+	}
+	else
+		ft_printf("minishell: memory error\n");
+	return (ret);
+}
+
+char	*resolve_complete_key(char **src, int *index, t_env *env)
+{
+	t_env	*tmp;
+	char	*ret;
+
+	if ((tmp = search_key(env, *src, *index + 1)) != NULL)
+	{
+		if ((ret = replace_env(*src, tmp, ft_strlen(tmp->key)
+			+ 1, *index)) != NULL)
+		{
+			ft_strreplace(src, ret, index, tmp);
+			return (*src);
+		}
+		else
+			return (return_null("minishell: memory error"));
+	}
+	else
+		return (return_null("minishell: variable not found"));
+}
+
+char	**res_ext(char **av, t_env *env)
+{
+	int		i[2];
+	t_env	*tmp;
+	char	*ret;
+
+	i[0] = -1;
+	while (av && av[++i[0]] && !(i[1] = 0))
+	{
+		while (av[i[0]][i[1]])
+		{
+			if (av[i[0]][i[1]] != '$' && av[i[0]][i[1]] != '~')
+				i[1]++;
+			else if (av[i[0]][i[1]] == '~' && (tmp = ft_envgetelem("HOME", env))
+				!= NULL && (ret = replace_env(av[i[0]], tmp, 1, i[1])) != NULL)
+				ft_strreplace(&av[i[0]], ret, &i[1], tmp);
+			else if (av[i[0]][i[1]] == '~' && (tmp = ft_envgetelem("HOME", env))
+				== NULL)
+				return (return_null("Entry HOME not found\n"));
+			else if (av[i[0]][i[1]] == '$'
+				&& resolve_complete_key(&av[i[0]], &i[1], env) == NULL)
+				return (NULL);
+		}
+	}
+	return (av);
+}

srcs/put_error_cd.c

@@ -0,0 +1,31 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   put_error_cd.c                                     :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: tmaze <tmaze@student.42.fr>                +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2020/01/26 22:18:09 by tmaze             #+#    #+#             */
+/*   Updated: 2020/01/26 22:18:24 by tmaze            ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "minishell.h"
+
+void	*put_error_cd(char *file, char *msg)
+{
+	ft_putstr("cd: ");
+	ft_putstr(file);
+	ft_putstr(": ");
+	ft_putendl(msg);
+	return (NULL);
+}
+
+int		put_error_cd2(char *file, char *msg)
+{
+	ft_putstr("cd: ");
+	ft_putstr(file);
+	ft_putstr(": ");
+	ft_putendl(msg);
+	return (1);
+}