/*      $KAME: dump.c,v 1.16 2001/03/21 17:41:13 jinmei Exp $   */

/*
 * Copyright (C) 2000 WIDE Project.
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the project nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * $FreeBSD: src/usr.sbin/rtadvd/dump.c,v 1.1.2.3 2002/06/29 18:59:53 ume Exp $
 * $DragonFly: src/usr.sbin/rtadvd/dump.c,v 1.6 2005/12/05 00:56:37 swildner Exp $
 */
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/queue.h>

#include <net/if.h>
#if defined(__DragonFly__) 
#include <net/if_var.h>
#endif /* __DragonFly__ */
#include <net/if_dl.h>

#include <netinet/in.h>

/* XXX: the following two are non-standard include files */
#include <netinet6/in6_var.h>
#include <netinet6/nd6.h>

#include <arpa/inet.h>

#include <time.h>
#include <stdio.h>
#include <stdarg.h>
#include <syslog.h>
#include <string.h>
#include <errno.h>

#include "rtadvd.h"
#include "timer.h"
#include "if.h"
#include "dump.h"

static FILE *fp;

extern struct rainfo *ralist;

static char *ether_str(struct sockaddr_dl *);
static void if_dump(void);

#ifdef __DragonFly__            /* XXX: see PORTABILITY */
#define LONGLONG "%qu"
#else
#define LONGLONG "%llu"
#endif

static char *rtpref_str[] = {
        "medium",               /* 00 */
        "high",                 /* 01 */
        "rsv",                  /* 10 */
        "low"                   /* 11 */
};

static char *
ether_str(struct sockaddr_dl *sdl)
{
        static char ebuf[32];
        u_char *cp;

        if (sdl->sdl_alen && sdl->sdl_alen > 5) {
                cp = (u_char *)LLADDR(sdl);
                sprintf(ebuf, "%x:%x:%x:%x:%x:%x",
                        cp[0], cp[1], cp[2], cp[3], cp[4], cp[5]);
        }
        else {
                sprintf(ebuf, "NONE");
        }

        return(ebuf);
}

static void
if_dump(void)
{
        struct rainfo *rai;
        struct prefix *pfx;
        char prefixbuf[INET6_ADDRSTRLEN];
        int first;
        struct timeval now;

        gettimeofday(&now, NULL); /* XXX: unused in most cases */
        for (rai = ralist; rai; rai = rai->next) {
                fprintf(fp, "%s:\n", rai->ifname);

                fprintf(fp, "  Status: %s\n",
                        (iflist[rai->ifindex]->ifm_flags & IFF_UP) ? "UP" :
                        "DOWN");

                /* control information */
                if (rai->lastsent.tv_sec) {
                        /* note that ctime() appends CR by itself */
                        fprintf(fp, "  Last RA sent: %s",
                                ctime((time_t *)&rai->lastsent.tv_sec));
                }
                if (rai->timer) {
                        fprintf(fp, "  Next RA will be sent: %s",
                                ctime((time_t *)&rai->timer->tm.tv_sec));
                }
                else
                        fprintf(fp, "  RA timer is stopped");
                fprintf(fp, "  waits: %d, initcount: %d\n",
                        rai->waiting, rai->initcounter);

                /* statistics */
                fprintf(fp,
                        "  statistics: RA(out/in/inconsistent): "
                        LONGLONG "/" LONGLONG "/" LONGLONG ", ",
                        (unsigned long long)rai->raoutput,
                        (unsigned long long)rai->rainput,
                        (unsigned long long)rai->rainconsistent);
                fprintf(fp, "RS(input): " LONGLONG "\n",
                        (unsigned long long)rai->rsinput);

                /* interface information */
                if (rai->advlinkopt)
                        fprintf(fp, "  Link-layer address: %s\n",
                                ether_str(rai->sdl));
                fprintf(fp, "  MTU: %d\n", rai->phymtu);

                /* Router configuration variables */
                fprintf(fp,
                        "  DefaultLifetime: %d, MaxAdvInterval: %d, "
                        "MinAdvInterval: %d\n",
                        rai->lifetime, rai->maxinterval, rai->mininterval);
                fprintf(fp, "  Flags: %s%s%s, ",
                        rai->managedflg ? "M" : "", rai->otherflg ? "O" : "",
#ifdef MIP6
                        rai->haflg ? "H" :
#endif
                        "");
                fprintf(fp, "Preference: %s, ",
                        rtpref_str[(rai->rtpref >> 3) & 0xff]);
                fprintf(fp, "MTU: %d\n", rai->linkmtu);
                fprintf(fp, "  ReachableTime: %d, RetransTimer: %d, "
                        "CurHopLimit: %d\n", rai->reachabletime,
                        rai->retranstimer, rai->hoplimit);
#ifdef MIP6
                fprintf(fp, "  HAPreference: %d, HALifetime: %d\n",
                        rai->hapref, rai->hatime);
#endif 

                if (rai->clockskew)
                        fprintf(fp, "  Clock skew: %ldsec\n",
                                rai->clockskew);  
                for (first = 1, pfx = rai->prefix.next; pfx != &rai->prefix;
                     pfx = pfx->next) {
                        if (first) {
                                fprintf(fp, "  Prefixes:\n");
                                first = 0;
                        }
                        fprintf(fp, "    %s/%d(",
                                inet_ntop(AF_INET6, &pfx->prefix,
                                          prefixbuf, sizeof(prefixbuf)),
                                pfx->prefixlen);
                        switch(pfx->origin) {
                        case PREFIX_FROM_KERNEL:
                                fprintf(fp, "KERNEL, ");
                                break;
                        case PREFIX_FROM_CONFIG:
                                fprintf(fp, "CONFIG, ");
                                break;
                        case PREFIX_FROM_DYNAMIC:
                                fprintf(fp, "DYNAMIC, ");
                                break;
                        }
                        if (pfx->validlifetime == ND6_INFINITE_LIFETIME)
                                fprintf(fp, "vltime: infinity");
                        else
                                fprintf(fp, "vltime: %ld",
                                        (long)pfx->validlifetime);
                        if (pfx->vltimeexpire != 0)
                                fprintf(fp, "(decr,expire %ld), ", (long)
                                        pfx->vltimeexpire > now.tv_sec ?
                                        pfx->vltimeexpire - now.tv_sec : 0);
                        else
                                fprintf(fp, ", ");
                        if (pfx->preflifetime ==  ND6_INFINITE_LIFETIME)
                                fprintf(fp, "pltime: infinity");
                        else
                                fprintf(fp, "pltime: %ld",
                                        (long)pfx->preflifetime);
                        if (pfx->pltimeexpire != 0)
                                fprintf(fp, "(decr,expire %ld), ", (long)
                                        pfx->pltimeexpire > now.tv_sec ?
                                        pfx->pltimeexpire - now.tv_sec : 0);
                        else
                                fprintf(fp, ", ");
                        fprintf(fp, "flags: %s%s%s",
                                pfx->onlinkflg ? "L" : "",
                                pfx->autoconfflg ? "A" : "",
#ifdef MIP6
                                pfx->routeraddr ? "R" :
#endif
                                "");
                        if (pfx->timer) {
                                struct timeval *rest;

                                rest = rtadvd_timer_rest(pfx->timer);
                                if (rest) { /* XXX: what if not? */
                                        fprintf(fp, ", expire in: %ld",
                                            (long)rest->tv_sec);
                                }
                        }
                        fprintf(fp, ")\n");
                }
        }
}

void
rtadvd_dump_file(char *dumpfile)
{
        if ((fp = fopen(dumpfile, "w")) == NULL) {
                syslog(LOG_WARNING, "<%s> open a dump file(%s)",
                       __func__, dumpfile);
                return;
        }

        if_dump();

        fclose(fp);
}