109 lines
2.4 KiB
C
109 lines
2.4 KiB
C
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* pipex.c :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: erey-bet <marvin@42.fr> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2023/01/18 18:04:58 by erey-bet #+# #+# */
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/* Updated: 2023/01/19 17:30:04 by erey-bet ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include "../pipex.h"
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int free_all(t_data *data)
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{
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int i;
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if (data->fd1 > 0 && data->cmd1)
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close(data->fd1);
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close(data->fd2);
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i = 0;
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while (data->flg1[i])
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free(data->flg1[i++]);
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free(data->flg1);
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i = 0;
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while (data->flg2[i])
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free(data->flg2[i++]);
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free(data->flg2);
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free(data->cmd1);
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free(data->cmd2);
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return (1);
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}
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void first_cmd(int fd[2], t_data data)
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{
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dup2(data.fd1, 0);
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dup2(fd[1], 1);
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close(fd[0]);
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close(fd[1]);
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execve(data.cmd1, data.flg1, data.env);
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free_all(&data);
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exit(1);
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}
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void second_cmd(int fd[2], t_data data)
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{
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dup2(fd[0], 0);
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dup2(data.fd2, 1);
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close(fd[0]);
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close(fd[1]);
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execve(data.cmd2, data.flg2, data.env);
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free_all(&data);
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exit(1);
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}
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int pipex(t_data data)
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{
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int fd[2];
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int cmd1;
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int cmd2;
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if (pipe(fd) < -1)
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return (1);
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if (data.fd1 > 0 && data.cmd1)
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{
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cmd1 = fork();
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if (cmd1 < 0)
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return (1);
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if (cmd1 == 0)
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first_cmd(fd, data);
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}
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cmd2 = fork();
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if (cmd2 < 0)
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return (1);
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if (cmd2 == 0)
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second_cmd(fd, data);
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close(fd[0]);
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close(fd[1]);
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if (data.fd1 > 0 && data.cmd1)
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waitpid(cmd1, NULL, 0);
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waitpid(cmd2, NULL, 0);
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return (0);
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}
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int main(int argc, char *argv[], char **env)
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{
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t_data data;
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if (argc != 5)
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return (1);
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if (parsing(argv, &data))
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return (2);
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data.cmd1 = find_command(env, data.cmd1);
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if (data.cmd1 == NULL)
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print_error(1, argv[2]);
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data.cmd2 = find_command(env, data.cmd2);
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if (data.cmd2 == NULL)
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{
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print_error(1, argv[3]);
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return (free_all(&data));
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}
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data.env = env;
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if (pipex(data))
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return (free_all(&data));
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free_all(&data);
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return (0);
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}
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