void cmd_retr(t_ftpserv *ftpserv, t_client *client, char *args)
{
int pid;
logline(ftpserv, 1, "user ^ retr ^.\n", client->username, args);
if ((pid = fork()) == -1)
{
send_msg2client(client, "451 fork error. Please try again later.\r\n");
return ;
}
if (pid == 0)
{
if (client->mode == MODE_ACTF)
make_connect_socket(client);
send_msg2client(client, "150 Opening data connection.\r\n");
if (client->mode == MODE_PASV)
passiv_connect(ftpserv, client);
do_retr(ftpserv, client, args);
shutdown(client->data_fd, SHUT_RDWR);
close(client->data_fd);
if (client->mode == MODE_PASV)
close(client->data_servfd);
send_msg2client(client, "226 Transfer complete.\r\n");
}
}
static void loop()
{
char buf[BUFSIZ];
char *p;
int c;
signal(SIGALRM, bye);
while (alarm(300), fgets(buf, sizeof(buf), stdin))
{
bytes_received_count += strlen(buf);
alarm(0);
if ((p=strchr(buf, '\n')) != 0)
*p=0;
else while ((c=getc(stdin)) >= 0 && c != '\n')
;
p=strtok(buf, " \t\r");
if (!p) p="";
mkupper(p);
if (strcmp(p, "QUIT") == 0)
{
printed(printf("+OK Bye-bye.\r\n"));
fflush(stdout);
cleanup();
acctout("INFO: LOGOUT");
return;
}
if (strcmp(p, "STAT") == 0)
{
do_stat();
continue;
}
if (strcmp(p, "LIST") == 0)
{
do_list(strtok(NULL, " \t\r"));
continue;
}
if (strcmp(p, "RETR") == 0)
{
unsigned i;
if ((i=getmsgnum(strtok(NULL, " \t\r"))) == 0)
continue;
do_retr(i-1, 0);
continue;
}
if (strcmp(p, "CAPA") == 0)
{
pop3dcapa();
continue;
}
if (strcmp(p, "DELE") == 0)
{
unsigned i;
if ((i=getmsgnum(strtok(NULL, " \t\r"))) == 0)
continue;
msglist_a[i-1]->isdeleted=1;
printed(printf("+OK Deleted.\r\n"));
fflush(stdout);
continue;
}
if (strcmp(p, "NOOP") == 0)
{
printed(printf("+OK Yup.\r\n"));
fflush(stdout);
continue;
}
if (strcmp(p, "RSET") == 0)
{
unsigned i;
for (i=0; i<msglist_cnt; i++)
msglist_a[i]->isdeleted=0;
printed(printf("+OK Resurrected.\r\n"));
fflush(stdout);
continue;
}
if (strcmp(p, "TOP") == 0)
{
unsigned i, j;
const char *q;
if ((i=getmsgnum(strtok(NULL, " \t\r"))) == 0)
continue;
q=strtok(NULL, " \t\r");
if (!q) goto error;
j=atoi(q);
do_retr(i-1, &j);
continue;
}
if (strcmp(p, "UIDL") == 0)
{
do_uidl(strtok(NULL, " \t\r"));
continue;
}
error:
printed(printf("-ERR Invalid command.\r\n"));
fflush(stdout);
}
acctout("INFO: DISCONNECTED");
}
void client_read(client *cl)
{
int status, pn;
status = mr_cont_receive(cl->con, &cl->req);
if (status == -1)
return;
else if (status != MR_SUCCESS)
{
cl->state = CL_CLOSING;
if (status != MR_NOT_CONNECTED)
com_err(whoami, status, "while reading from socket");
return;
}
pn = cl->req.u.mr_procno;
if (pn < 0 || pn > MR_MAX_PROC)
{
com_err(whoami, 0, "procno out of range");
client_reply(cl, MR_UNKNOWN_PROC);
goto out;
}
log_args(procnames[pn], 2, cl->req.mr_argc, cl->req.mr_argv);
if (dormant == ASLEEP && pn != MR_NOOP && pn != MR_MOTD)
{
client_reply(cl, MR_DOWN);
com_err(whoami, MR_DOWN, "(query refused)");
goto out;
}
/* make sure this gets cleared before every operation */
dbms_errno = 0;
switch (pn)
{
case MR_NOOP:
client_reply(cl, MR_SUCCESS);
break;
case MR_AUTH:
do_auth(cl);
break;
case MR_QUERY:
do_retr(cl);
break;
case MR_ACCESS:
do_access(cl);
break;
case MR_SHUTDOWN:
do_shutdown(cl);
break;
case MR_DO_UPDATE:
client_reply(cl, MR_PERM);
break;
case MR_MOTD:
get_motd(cl);
break;
case MR_PROXY:
do_proxy(cl);
break;
case MR_SETVERSION:
do_version(cl);
break;
case MR_KRB5_AUTH:
do_krb5_auth(cl);
break;
}
out:
mr_destroy_reply(cl->req);
memset(&cl->req, 0, sizeof(mr_params));
}
