103 lines
2.2 KiB
C
103 lines
2.2 KiB
C
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* server.c :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: jhalford <jack@crans.org> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2017/04/02 15:02:48 by jhalford #+# #+# */
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/* Updated: 2017/04/03 16:42:49 by jhalford ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include "ft_p.h"
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#define FTP_SERVER_USAGE "%s <port>"
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char **g_av = NULL;
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t_itof g_ftp_cmd[] =
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{
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{REQUEST_FILE, serv_do_get},
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{0, 0},
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};
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int ftp_cmd(int sock, int req)
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{
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int i;
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int msg_ok;
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i = -1;
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msg_ok = htons(CMD_SUPPORTED);
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while (g_ftp_cmd[++i].id)
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{
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if (g_ftp_cmd[i].id == req)
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{
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if (!(g_ftp_cmd[i].f))
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break ;
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write(sock, (char *)&msg_ok, sizeof(msg_ok));
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(g_ftp_cmd[i].f)(sock);
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return (0);
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}
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}
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msg_ok = htons(CMD_NOT_SUPPORTED);
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write(sock, (char *)&msg_ok, sizeof(msg_ok));
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return (1);
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}
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int ftp_spawn(int sock)
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{
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int req;
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int r;
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DG("new connection");
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while ((r = read(sock, (char*)&req, sizeof(req))) > 0)
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{
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req = ntohs(req);
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DG("request code [%i]", req);
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ftp_cmd(sock, req);
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}
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DG("end of connection");
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close(sock);
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return (0);
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}
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int ftp_daemon(int sock)
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{
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int cs;
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struct sockaddr_in csin;
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socklen_t cslen;
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pid_t pid;
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while (1)
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{
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cs = accept(sock, (struct sockaddr*)&csin, &cslen);
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if ((pid = fork()) < 0)
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return (-1);
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if (pid == 0)
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{
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close(sock);
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exit(ftp_spawn(cs));
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}
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close(cs);
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}
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close(sock);
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return (0);
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}
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int main(int ac, char **av)
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{
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int port;
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int sock;
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g_av = av;
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if (ac != 2)
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ft_usage(FTP_SERVER_USAGE, av[0]);
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port = ft_atoi(av[1]);
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if ((sock = create_server(port, 3, "tcp")) < 0
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|| ftp_daemon(sock) < 0)
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{
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perror(av[0]);
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return (1);
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}
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return (0);
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}
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