mirror of
https://github.com/troglobit/finit.git
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Joachim Nilsson
32587d341c
This patch adds support for a configure script and with it
support for disabling inetd support. See the output from
./configure --help
* Add configure script
* Sprinkle #ifdef fairy dust on svc.c when inetd support is disabled
* Use GCC built-in autodep calculator (-MMD -MP)
* Fix name space issue with include files, use relative paths
* Disable username/group name to uid/gid functions in static builds
* Bug out (error) if a user tries to build the bootmisc plugin static
Possibly fixes GitHub issue #5 and issue #6.
NOTE: The static build has not received any testing at all!
Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
88 lines
2.5 KiB
C
88 lines
2.5 KiB
C
/* Optional inetd plugin for time (rdate) protocol RFC 868
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*
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* Copyright (c) 2015 Joachim Nilsson <troglobit@gmail.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <arpa/inet.h>
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#include <time.h>
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#include <unistd.h> /* STDIN_FILENO */
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#include <sys/socket.h>
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#include "../plugin.h"
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/* UNIX epoch starts midnight, 1st Jan, 1970 */
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#define EPOCH_OFFSET 2208988800ULL
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/* Return number of seconds since midnight, 1st Jan, 1900 */
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static int rfc868(int type)
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{
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int sd = STDIN_FILENO;
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time_t now;
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struct sockaddr_storage sa;
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socklen_t sa_len = sizeof(sa);
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if (SOCK_DGRAM == type) {
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int dummy;
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/* Read empty datagram in UDP mode before sending reply. */
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if (-1 == recvfrom(sd, &dummy, sizeof(dummy), MSG_DONTWAIT, (struct sockaddr *)&sa, &sa_len))
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return -1; /* On error, close connection. */
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}
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now = time(NULL);
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if ((time_t)-1 == now)
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return -1; /* On error, close connection. */
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/* Account for UNIX epoch offset */
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now += EPOCH_OFFSET;
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/* Convert to network byte order, not explicitly stated in RFC */
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now = htonl(now);
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/* Send reply, ignore error, simply close connection. */
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return sendto(sd, &now, sizeof(now), MSG_DONTWAIT, (struct sockaddr *)&sa, sa_len);
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}
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static plugin_t plugin = {
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.name = "time",
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.inetd = {
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.cmd = rfc868
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}
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};
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PLUGIN_INIT(plugin_init)
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{
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plugin_register(&plugin);
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}
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PLUGIN_EXIT(plugin_exit)
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{
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plugin_unregister(&plugin);
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}
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/**
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* Local Variables:
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* version-control: t
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* indent-tabs-mode: t
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* c-file-style: "linux"
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* End:
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*/
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