11 changed files with 74 additions and 495 deletions
@ -1,13 +1,19 @@ |
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# Minishell |
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|
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#Minishell |
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--- |
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|
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## TODO : |
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|
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- free stack, |
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- handle environment, |
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- finish built-ins, |
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- handle multiples heredocs, |
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- better env management |
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- j'ai oublié ><' |
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- ... ? |
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|
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## Notes : |
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|
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## Issues : |
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|
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- cat | cat | ls crash on linux ? |
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- segfault on echo $PATH (g_env bad restaured) |
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- |
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|
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@ -1,102 +0,0 @@ |
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/* ************************************************************************** */ |
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/* */ |
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/* ::: :::::::: */ |
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/* caller.c :+: :+: :+: */ |
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/* +:+ +:+ +:+ */ |
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/* By: narnaud <narnaud@student.42.fr> +#+ +:+ +#+ */ |
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/* +#+#+#+#+#+ +#+ */ |
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/* Created: 2022/02/16 16:46:53 by narnaud #+# #+# */ |
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/* Updated: 2022/03/24 17:15:24 by narnaud ### ########.fr */ |
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/* */ |
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/* ************************************************************************** */ |
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|
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#include "minishell.h" |
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int command_call(char *argv[], int input_fd, int output_fd) |
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{ |
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if (ft_strncmp(argv[0], "echo", 4) == 0) |
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return (ft_echo(argv, output_fd)); |
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else if (ft_strncmp(argv[0], "pwd", 3) == 0) |
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return (ft_pwd(argv, input_fd, output_fd)); |
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else if (ft_strncmp(argv[0], "cd", 2) == 0) |
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return (ft_cd(argv, input_fd, output_fd)); |
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else if (ft_strncmp(argv[0], "export", 6) == 0) |
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return (ft_export(argv, input_fd, output_fd)); |
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else if (ft_strncmp(argv[0], "unset", 5) == 0) |
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return (ft_unset(argv, input_fd, output_fd)); |
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else if (ft_strncmp(argv[0], "env", 3) == 0) |
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return (ft_env(argv, input_fd, output_fd)); |
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else if (ft_strncmp(argv[0], "exit", 4) == 0) |
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return (close_minishell(0)); |
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else |
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{ |
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errno = EINVAL; |
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return (-1); |
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} |
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} |
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|
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void exe(char *argv[], char *const envp[]) |
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{ |
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char **path_dirs; |
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char *path; |
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size_t path_length; |
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execve(argv[0], argv, envp); |
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path_dirs = ft_split(getenv("PATH"), ':'); |
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while (path_dirs) |
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{ |
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path_length = ft_strlen(*path_dirs) + ft_strlen(argv[0]) + 2; |
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path = ft_calloc(path_length, sizeof(char)); |
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ft_memcpy(path, *path_dirs, ft_strlen(*path_dirs)); |
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ft_memcpy(path + ft_strlen(*path_dirs),"/", 1); |
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ft_memcpy(path + ft_strlen(*path_dirs) + 1, argv[0], ft_strlen(argv[0])); |
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free(path); |
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execve(path, argv, envp); |
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path_dirs++; |
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} |
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} |
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int caller(t_command *command, int input_fd, int output_fd) |
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{ |
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pid_t pid; |
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int cmd_ret; |
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int status; |
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if (command->input != 0) |
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input_fd = command->fd[0]; |
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if (command->output != 1) |
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output_fd = command->fd[1]; |
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else if (!command->next) |
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output_fd = 1; |
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cmd_ret = command_call(command->argv, input_fd, output_fd); |
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if (cmd_ret == -1 && errno == EINVAL) |
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{ |
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pid = fork(); |
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termios(1); |
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if (pid == 0) |
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{ |
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if (command->prev || command->input || command->heredoc) |
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{ |
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dup2(input_fd, STDIN_FILENO); |
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close(input_fd); |
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} |
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if (command->next || command->output) |
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dup2(output_fd, STDOUT_FILENO); |
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exe(command->argv, command->envp); |
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} |
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//signal(SIGINT, NULL);
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//signal(SIGQUIT, NULL);
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waitpid(pid, &status, 0); |
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//signal(SIGINT, sigs_handler);
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//signal(SIGQUIT, sigs_handler);
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termios(0); |
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if (command->output) |
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close(command->output); |
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if (WIFSIGNALED(status)) |
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return (-1); |
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if (!WIFEXITED(status)) |
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printf("Minishell: command not found: '%s'\n", command->argv[0]); |
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} |
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return (0); |
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} |
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@ -1,90 +0,0 @@ |
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/* ************************************************************************** */ |
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/* */ |
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/* ::: :::::::: */ |
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/* export.c :+: :+: :+: */ |
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/* +:+ +:+ +:+ */ |
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/* By: narnaud <narnaud@student.42.fr> +#+ +:+ +#+ */ |
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/* +#+#+#+#+#+ +#+ */ |
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/* Created: 2022/02/16 09:41:29 by narnaud #+# #+# */ |
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/* Updated: 2022/04/14 07:45:21 by narnaud ### ########.fr */ |
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/* */ |
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/* ************************************************************************** */ |
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#include "minishell.h" |
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int ft_unset(char **argv, int input_fd, int output_fd) |
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{ |
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(void)output_fd; |
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(void)input_fd; |
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if (!argv[1]) |
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{ |
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//read(input_fd, PIPE_MAX_SIZE);
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return (1); |
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} |
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return (0); |
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} |
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int ft_env(char **argv, int input_fd, int output_fd) |
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{ |
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(void)output_fd; |
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(void)input_fd; |
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(void)argv; |
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int i; |
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i = 0; |
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while (g_env[i]) |
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{ |
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printf("%s\n", g_env[i]); |
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i++; |
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} |
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return (0); |
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} |
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int is_valid_identifier(char *ident) |
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{ |
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if (ft_isalpha(ident[0]) || ident[0] == '_') |
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{ |
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while (*ident) |
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{ |
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if (!ft_isalpha(*ident) && !ft_isdigit(*ident) && *ident != '_') |
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return (0); |
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ident++; |
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} |
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return (1); |
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} |
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return (0); |
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} |
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int ft_export(char **argv, int input_fd, int output_fd) |
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{ |
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char **new; |
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char **env; |
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int i; |
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(void)output_fd; |
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(void)input_fd; |
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i = 0; |
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new = ft_split(argv[1], '='); |
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if (!is_valid_identifier(new[0])) |
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{ |
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printf ("export: not an identifier: %s\n", new[0]); |
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return (0); |
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} |
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while (g_env[i]) |
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{ |
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env = ft_split(g_env[i], '='); |
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if (!ft_strncmp(new[0], env[0], ft_strlen(new[0]) + 1)) |
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{ |
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g_env[i] = argv[1]; |
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return (1); |
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} |
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i++; |
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} |
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g_env[i] = argv[1]; |
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g_env[i + 1] = NULL; |
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return (1); |
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} |
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@ -1,100 +0,0 @@ |
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/* ************************************************************************** */ |
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/* */ |
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/* ::: :::::::: */ |
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/* parser.c :+: :+: :+: */ |
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/* +:+ +:+ +:+ */ |
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/* By: narnaud <narnaud@student.42.fr> +#+ +:+ +#+ */ |
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/* +#+#+#+#+#+ +#+ */ |
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/* Created: 2022/01/06 07:52:29 by narnaud #+# #+# */ |
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/* Updated: 2022/04/14 09:19:12 by narnaud ### ########.fr */ |
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/* */ |
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/* ************************************************************************** */ |
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#include "minishell.h" |
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size_t count_arguments(t_token tok) |
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{ |
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size_t ret; |
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ret = 0; |
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while (tok.value) |
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{ |
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if (tok.type == 0 && tok.value[0] != '|') |
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ret++; |
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if (tok.next) |
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tok = *(tok.next); |
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else |
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break ; |
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} |
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return (ret); |
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} |
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void update_redir(t_command *cmd, t_token tok) |
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{ |
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if (tok.type == OUT) |
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{ |
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if (cmd->fd[1]) |
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close(cmd->fd[1]); |
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cmd->output = init_file(tok.value, O_TRUNC | O_WRONLY); |
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} |
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else if (tok.type == ADD) |
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{ |
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if (cmd->fd[1]) |
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close(cmd->fd[1]); |
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cmd->fd[1] = init_file(tok.value, O_APPEND | O_WRONLY); |
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} |
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else if (tok.type == IN) |
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{ |
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if (cmd->fd[0]) |
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close(cmd->fd[0]); |
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cmd->fd[0] = init_file(tok.value, O_RDONLY); |
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} |
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else if (tok.type == HD) |
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{ |
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if (cmd->fd[0]) |
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close(cmd->fd[0]); |
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cmd->fd[0] = 0; |
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cmd->heredoc = tok.value; |
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} |
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} |
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|
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t_command *parser(t_token tok) |
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{ |
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int i; |
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t_command *cmd; |
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t_command *ret; |
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cmd = ft_calloc(1, sizeof(t_command)); |
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ret = cmd; |
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while (tok.value) |
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{ |
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i = 0; |
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cmd->argv = ft_calloc(count_arguments(tok) + 1, sizeof(char *)); |
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while(tok.value[0] != '|') |
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{ |
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if (tok.type) |
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update_redir(cmd, tok); |
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else |
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{ |
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cmd->argv[i] = tok.value; |
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i++; |
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} |
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if (tok.next) |
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tok = *(tok.next); |
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else |
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break ; |
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} |
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//printf("Input : %d\n", cmd->input);
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//printf("Output : %d\n", cmd->output);
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cmd->argv[i] = NULL; |
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if (tok.next) |
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tok = *(tok.next); |
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else |
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break ; |
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cmd->next = ft_calloc(1, sizeof(t_command)); |
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cmd->next->prev = cmd; |
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cmd = cmd->next; |
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} |
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return (ret); |
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} |
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@ -1,94 +0,0 @@ |
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/* ************************************************************************** */ |
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/* */ |
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/* ::: :::::::: */ |
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/* utils.c :+: :+: :+: */ |
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/* +:+ +:+ +:+ */ |
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/* By: narnaud <narnaud@student.42.fr> +#+ +:+ +#+ */ |
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/* +#+#+#+#+#+ +#+ */ |
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/* Created: 2022/01/07 11:54:34 by narnaud #+# #+# */ |
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/* Updated: 2022/03/22 15:38:08 by narnaud ### ########.fr */ |
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/* */ |
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/* ************************************************************************** */ |
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#include "minishell.h" |
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|
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char **get_commands(char *line) |
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{ |
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char **split; |
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split = ft_split(line, '|'); |
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return (split); |
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} |
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|
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int is_empty(char *line) |
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{ |
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while (*line) |
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{ |
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if (*line <= 9 || (*line >= 13 && *line != 32)) |
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return (0); |
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line++; |
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} |
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return (1); |
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} |
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|
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int msg_n_ret(char *msg, int ret) |
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{ |
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printf("%s", msg); |
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return (ret); |
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} |
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|
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int init_file(char *filename, int mode) |
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{ |
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return (open(filename, mode | O_CREAT, 0644)); |
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} |
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|
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int is_space(char ch) |
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{ |
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if (ch == 32 || (ch > 8 && ch < 14)) |
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return (1); |
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else |
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return (0); |
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} |
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|
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void termios(int ctl) |
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{ |
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struct termios termios_p; |
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int tty; |
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tty = ttyslot(); |
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if (tcgetattr(tty, &termios_p) < 0) |
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{ |
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perror("stdin"); |
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exit (EXIT_FAILURE); |
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} |
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//termios_p.c_oflag &= CRDLY;
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//termios_p.c_lflag &= ICANON;
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if (ctl) |
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{ |
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termios_p.c_lflag |= ECHOCTL; |
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termios_p.c_cc[VQUIT] = 28; |
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} |
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else |
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{ |
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termios_p.c_lflag &= ~(ECHOCTL); |
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termios_p.c_cc[VQUIT] = 0; |
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} |
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tcsetattr(tty, TCSANOW, &termios_p); |
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} |
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|
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void sigs_handler(int sig_num) |
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{ |
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if (sig_num == SIGQUIT) |
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printf("QUIT: 3\n"); |
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else if (sig_num == SIGINT) |
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printf("\n"); |
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rl_on_new_line(); |
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rl_replace_line("", 0); |
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rl_redisplay(); |
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return ; |
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} |
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void halt(int ret_code) |
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{ |
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printf("exit"); |
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exit(ret_code); |
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} |
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Reference in new issue