forked from nicolas-arnaud/Minishell
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102 lines
3.2 KiB
102 lines
3.2 KiB
/* ************************************************************************** */
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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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#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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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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