118 lines
3.3 KiB
C
118 lines
3.3 KiB
C
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* execution.c :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: cchauvet <cchauvet@student.42angoulem +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2023/02/21 12:45:16 by cchauvet #+# #+# */
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/* Updated: 2023/04/07 10:54:52 by alouis-j ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include "execution_private.h"
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static int ft_execute_own_cmd(t_data *data, t_cmd *cmd)
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{
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int return_code;
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if (ft_strcmp(cmd->executable, "pwd") == 0)
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return_code = pwd(cmd->fd_out[0]);
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else if (ft_strcmp(cmd->executable, "env") == 0)
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return_code = print_env(data->env, cmd->fd_out[0]);
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else if (ft_strcmp(cmd->executable, "export") == 0)
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return_code = ft_export(data->env, cmd->args + 1, cmd->fd_out[0]);
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else if (ft_strcmp(cmd->executable, "cd") == 0)
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return_code = (move_folder(cmd->args + 1, cmd->fd_out[0]));
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else if (ft_strcmp(cmd->executable, "unset") == 0)
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return_code = (unset(data->env, cmd->args, cmd->fd_out[0]));
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else if (ft_strcmp(cmd->executable, "echo") == 0)
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return_code = (echo(cmd->fd_out[0], cmd->args + 1));
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else
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{
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return_code = ft_exit(cmd->args + 1, *data->exit_code);
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if (return_code >= 0)
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{
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*data->exit_code = return_code;
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return (-2);
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}
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}
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*data->exit_code = return_code;
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return (return_code);
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}
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static bool ft_executor(t_data *data, t_cmd *cmd, char **env)
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{
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if (cmd->fd_in[0] == -1 || cmd->fd_out[0] == -1 || cmd->executable == NULL)
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return (0);
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cmd->pid = fork();
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if (cmd->pid == -1)
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return (1);
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if (cmd->pid == 0)
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{
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signal(SIGQUIT, SIG_DFL);
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signal(SIGKILL, SIG_DFL);
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dup2(cmd->fd_in[0], 0);
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dup2(cmd->fd_out[0], 1);
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ft_lstiter(*data->cmds, ft_cmdcloser);
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execve(cmd->executable, cmd->args, env);
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return (1);
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}
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return (0);
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}
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static int ft_cmd_executor(t_data *data, t_cmd *cmd)
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{
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int exit_code;
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char **env;
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if (cmd->own_cmd == 1)
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{
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exit_code = ft_execute_own_cmd(data, cmd);
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ft_closer(cmd->fd_in);
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ft_closer(cmd->fd_out);
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if (exit_code == -2)
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return (1);
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}
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else
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{
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env = env_to_strs(data->env);
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if (env == NULL)
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return (1);
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exit_code = ft_executor(data, cmd, env);
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ft_closer(cmd->fd_in);
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ft_closer(cmd->fd_out);
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ft_freer_tab_ultimate(1, env);
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if (exit_code == 1)
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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_cmds_executor(t_data *data)
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{
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int fds[2];
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t_list *current;
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t_cmd *content;
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current = *data->cmds;
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while (current != NULL)
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{
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content = current->content;
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fds[0] = -1;
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if (current->next != NULL)
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{
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if (pipe(fds) == -1)
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return (1);
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ft_add_fd(content->fd_out, fds[1]);
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ft_add_fd(((t_cmd *)(current->next->content))->fd_in, fds[0]);
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}
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if (content->fd_in[0] == -2 || content->fd_out[0] == -2)
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ft_mega_closer(content->fd_in, content->fd_out);
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else if (ft_cmd_executor(data, content))
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return (1);
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current = current->next;
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}
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return (0);
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}
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