ipfsync is a WIP sync daemon designed to be used in a failover scenario. It was removed by5ee61c7daa
. This commit restores its three files. ipfsync is in my work queue. MFC after: 10 days X-MFC with:5ee61c7daa
257 lines
4.8 KiB
C
257 lines
4.8 KiB
C
/* $FreeBSD$ */
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/*
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* Copyright (C) 2012 by Darren Reed.
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*
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* See the IPFILTER.LICENCE file for details on licencing.
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*/
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#if !defined(lint)
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static const char sccsid[] = "@(#)ip_fil.c 2.41 6/5/96 (C) 1993-2000 Darren Reed";
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static const char rcsid[] = "@(#)$Id$";
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#endif
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#include <sys/types.h>
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#include <sys/time.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <net/if.h>
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#include <arpa/inet.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <string.h>
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#include <syslog.h>
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#include <signal.h>
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#include "netinet/ip_compat.h"
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#include "netinet/ip_fil.h"
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#include "netinet/ip_nat.h"
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#include "netinet/ip_state.h"
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#include "netinet/ip_sync.h"
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int main(int, char *[]);
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void usage(const char *);
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int terminate = 0;
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void usage(const char *progname) {
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fprintf(stderr, "Usage: %s <destination IP> <destination port>\n", progname);
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}
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#if 0
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static void handleterm(int sig)
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{
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terminate = sig;
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}
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#endif
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/* should be large enough to hold header + any datatype */
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#define BUFFERLEN 1400
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int main(argc, argv)
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int argc;
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char *argv[];
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{
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struct sockaddr_in sin;
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char buff[BUFFERLEN];
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synclogent_t *sl;
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syncupdent_t *su;
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int nfd = -1, lfd = -1, n1, n2, n3, len;
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int inbuf;
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u_32_t magic;
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synchdr_t *sh;
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char *progname;
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progname = strrchr(argv[0], '/');
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if (progname) {
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progname++;
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} else {
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progname = argv[0];
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}
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if (argc < 2) {
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usage(progname);
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exit(1);
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}
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#if 0
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signal(SIGHUP, handleterm);
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signal(SIGINT, handleterm);
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signal(SIGTERM, handleterm);
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#endif
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openlog(progname, LOG_PID, LOG_SECURITY);
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bzero((char *)&sin, sizeof(sin));
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sin.sin_family = AF_INET;
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sin.sin_addr.s_addr = inet_addr(argv[1]);
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if (argc > 2)
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sin.sin_port = htons(atoi(argv[2]));
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else
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sin.sin_port = htons(43434);
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while (1) {
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if (lfd != -1)
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close(lfd);
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if (nfd != -1)
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close(nfd);
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lfd = open(IPSYNC_NAME, O_RDONLY);
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if (lfd == -1) {
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syslog(LOG_ERR, "Opening %s :%m", IPSYNC_NAME);
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goto tryagain;
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}
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nfd = socket(AF_INET, SOCK_DGRAM, 0);
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if (nfd == -1) {
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syslog(LOG_ERR, "Socket :%m");
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goto tryagain;
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}
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if (connect(nfd, (struct sockaddr *)&sin, sizeof(sin)) == -1) {
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syslog(LOG_ERR, "Connect: %m");
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goto tryagain;
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}
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syslog(LOG_INFO, "Sending data to %s",
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inet_ntoa(sin.sin_addr));
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inbuf = 0;
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while (1) {
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n1 = read(lfd, buff+inbuf, BUFFERLEN-inbuf);
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printf("header : %d bytes read (header = %d bytes)\n",
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n1, (int) sizeof(*sh));
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if (n1 < 0) {
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syslog(LOG_ERR, "Read error (header): %m");
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goto tryagain;
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}
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if (n1 == 0) {
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/* XXX can this happen??? */
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syslog(LOG_ERR,
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"Read error (header) : No data");
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sleep(1);
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continue;
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}
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inbuf += n1;
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moreinbuf:
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if (inbuf < sizeof(*sh)) {
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continue; /* need more data */
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}
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sh = (synchdr_t *)buff;
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len = ntohl(sh->sm_len);
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magic = ntohl(sh->sm_magic);
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if (magic != SYNHDRMAGIC) {
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syslog(LOG_ERR,
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"Invalid header magic %x", magic);
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goto tryagain;
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}
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#define IPSYNC_DEBUG
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#ifdef IPSYNC_DEBUG
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printf("v:%d p:%d len:%d magic:%x", sh->sm_v,
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sh->sm_p, len, magic);
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if (sh->sm_cmd == SMC_CREATE)
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printf(" cmd:CREATE");
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else if (sh->sm_cmd == SMC_UPDATE)
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printf(" cmd:UPDATE");
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else
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printf(" cmd:Unknown(%d)", sh->sm_cmd);
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if (sh->sm_table == SMC_NAT)
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printf(" table:NAT");
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else if (sh->sm_table == SMC_STATE)
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printf(" table:STATE");
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else
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printf(" table:Unknown(%d)", sh->sm_table);
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printf(" num:%d\n", (u_32_t)ntohl(sh->sm_num));
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#endif
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if (inbuf < sizeof(*sh) + len) {
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continue; /* need more data */
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goto tryagain;
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}
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#ifdef IPSYNC_DEBUG
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if (sh->sm_cmd == SMC_CREATE) {
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sl = (synclogent_t *)buff;
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} else if (sh->sm_cmd == SMC_UPDATE) {
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su = (syncupdent_t *)buff;
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if (sh->sm_p == IPPROTO_TCP) {
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printf(" TCP Update: age %lu state %d/%d\n",
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su->sup_tcp.stu_age,
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su->sup_tcp.stu_state[0],
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su->sup_tcp.stu_state[1]);
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}
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} else {
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printf("Unknown command\n");
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}
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#endif
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n2 = sizeof(*sh) + len;
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n3 = write(nfd, buff, n2);
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if (n3 <= 0) {
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syslog(LOG_ERR, "Write error: %m");
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goto tryagain;
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}
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if (n3 != n2) {
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syslog(LOG_ERR, "Incomplete write (%d/%d)",
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n3, n2);
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goto tryagain;
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}
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/* signal received? */
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if (terminate)
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break;
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/* move buffer to the front,we might need to make
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* this more efficient, by using a rolling pointer
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* over the buffer and only copying it, when
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* we are reaching the end
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*/
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inbuf -= n2;
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if (inbuf) {
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bcopy(buff+n2, buff, inbuf);
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printf("More data in buffer\n");
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goto moreinbuf;
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}
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}
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if (terminate)
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break;
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tryagain:
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sleep(1);
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}
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/* terminate */
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if (lfd != -1)
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close(lfd);
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if (nfd != -1)
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close(nfd);
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syslog(LOG_ERR, "signal %d received, exiting...", terminate);
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exit(1);
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}
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