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/*

 * ifconfig   This file contains an implementation of the command

 *              that either displays or sets the characteristics of

 *              one or more of the system's networking interfaces.

 *

 * Version:     $Id: ifconfig.c,v 1.1 2002-03-17 19:58:52 simons Exp $

 *

 * Author:      Fred N. van Kempen, <waltje@uwalt.nl.mugnet.org>

 *              and others.  Copyright 1993 MicroWalt Corporation

 *

 *              This program is free software; you can redistribute it

 *              and/or  modify it under  the terms of  the GNU General

 *              Public  License as  published  by  the  Free  Software

 *              Foundation;  either  version 2 of the License, or  (at

 *              your option) any later version.

 * {1.34} - 19980630 - Arnaldo Carvalho de Melo <acme@conectiva.com.br>

 *                     - gettext instead of catgets for i18n

 *          10/1998  - Andi Kleen. Use interface list primitives.

 */

#define DFLT_AF "inet"

#include "config.h"

#include <features.h>

#include <sys/types.h>

#ifdef EMBED

#include <gnu/types.h>

#endif

#include <sys/socket.h>

#include <sys/ioctl.h>

#include <netinet/in.h>

#include <net/if.h>

#include <net/if_arp.h>

#include <stdio.h>

#include <errno.h>

#include <fcntl.h>

#include <ctype.h>

#include <stdlib.h>

#include <string.h>

#include <unistd.h>

#include <netdb.h>

/* Ugh.  But libc5 doesn't provide POSIX types.  */

#include <asm/types.h>

#ifdef HAVE_HWSLIP

#include <linux/if_slip.h>

#endif

#if HAVE_AFINET6

#ifndef _LINUX_IN6_H

/*

 *    This is in linux/include/net/ipv6.h.

 */

struct in6_ifreq {

    struct in6_addr ifr6_addr;

    __u32 ifr6_prefixlen;

    unsigned int ifr6_ifindex;

};

#endif

#define IPV6_ADDR_ANY           0x0000U

#define IPV6_ADDR_UNICAST       0x0001U

#define IPV6_ADDR_MULTICAST     0x0002U

#define IPV6_ADDR_ANYCAST       0x0004U

#define IPV6_ADDR_LOOPBACK      0x0010U

#define IPV6_ADDR_LINKLOCAL     0x0020U

#define IPV6_ADDR_SITELOCAL     0x0040U

#define IPV6_ADDR_COMPATv4      0x0080U

#define IPV6_ADDR_SCOPE_MASK    0x00f0U

#define IPV6_ADDR_MAPPED        0x1000U

#define IPV6_ADDR_RESERVED      0x2000U         /* reserved address space */

#endif                          /* HAVE_AFINET6 */

#ifdef IFF_PORTSEL

static const char *if_port_text[][4] =

{

  /* Keep in step with <linux/netdevice.h> */

    {"unknown", NULL, NULL, NULL},

    {"10base2", "bnc", "coax", NULL},

    {"10baseT", "utp", "tpe", NULL},

    {"AUI", "thick", "db15", NULL},

    {"100baseT", NULL, NULL, NULL},

    {"100baseTX", NULL, NULL, NULL},

    {"100baseFX", NULL, NULL, NULL},

    {NULL, NULL, NULL, NULL},

};

#endif

#if HAVE_AFIPX

#if (__GLIBC__ > 2) || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 1)

#include <netipx/ipx.h>

#else

#include "ipx.h"

#endif

#endif

#include "net-support.h"

#include "pathnames.h"

#include "version.h"

#include "../intl.h"

#include "interface.h"

#include "sockets.h"

#include "util.h"

char *Release = RELEASE, *Version = "ifconfig 1.39 (1999-03-18)";

int opt_a = 0;                   /* show all interfaces          */

int opt_i = 0;                   /* show the statistics          */

int opt_v = 0;                   /* debugging output flag        */

int addr_family = 0;             /* currently selected AF        */

void ife_print(struct interface *ptr)

{

    struct aftype *ap;

    struct hwtype *hw;

    int hf;

    int can_compress = 0;

#if HAVE_AFIPX

    static struct aftype *ipxtype = NULL;

#endif

#if HAVE_AFECONET

    static struct aftype *ectype = NULL;

#endif

#if HAVE_AFATALK

    static struct aftype *ddptype = NULL;

#endif

#if HAVE_AFINET6

    FILE *f;

    char addr6[40], devname[20];

    struct sockaddr_in6 sap;

    int plen, scope, dad_status, if_idx;

    extern struct aftype inet6_aftype;

    char addr6p[8][5];

#endif

    ap = get_afntype(ptr->addr.sa_family);

    if (ap == NULL)

        ap = get_afntype(0);

    hf = ptr->type;

    if (hf == ARPHRD_CSLIP || hf == ARPHRD_CSLIP6)

        can_compress = 1;

    hw = get_hwntype(hf);

    if (hw == NULL)

        hw = get_hwntype(-1);

    printf(_("%-9.9s Link encap:%s  "), ptr->name, hw->title);

    /* For some hardware types (eg Ash, ATM) we don't print the

       hardware address if it's null.  */

    if (hw->sprint != NULL && (! (hw_null_address(hw, ptr->hwaddr) &&

                                  hw->suppress_null_addr)))

        printf(_("HWaddr %s  "), hw->print(ptr->hwaddr));

#ifdef IFF_PORTSEL

    if (ptr->flags & IFF_PORTSEL) {

        printf(_("Media:%s"), if_port_text[ptr->map.port][0]);

        if (ptr->flags & IFF_AUTOMEDIA)

            printf(_("(auto)"));

    }

#endif

    printf("\n");

#if HAVE_AFINET

    if (ptr->has_ip) {

        printf(_("          %s addr:%s "), ap->name,

               ap->sprint(&ptr->addr, 1));

        if (ptr->flags & IFF_POINTOPOINT) {

            printf(_(" P-t-P:%s "), ap->sprint(&ptr->dstaddr, 1));

        }

        if (ptr->flags & IFF_BROADCAST) {

            printf(_(" Bcast:%s "), ap->sprint(&ptr->broadaddr, 1));

        }

        printf(_(" Mask:%s\n"), ap->sprint(&ptr->netmask, 1));

    }

#endif

#if HAVE_AFINET6

    /* FIXME: should be integrated into interface.c.   */

    if ((f = fopen(_PATH_PROCNET_IFINET6, "r")) != NULL) {

        while (fscanf(f, "%4s%4s%4s%4s%4s%4s%4s%4s %02x %02x %02x %02x %20s\n",

                      addr6p[0], addr6p[1], addr6p[2], addr6p[3],

                      addr6p[4], addr6p[5], addr6p[6], addr6p[7],

                  &if_idx, &plen, &scope, &dad_status, devname) != EOF) {

            if (!strcmp(devname, ptr->name)) {

                sprintf(addr6, "%s:%s:%s:%s:%s:%s:%s:%s",

                        addr6p[0], addr6p[1], addr6p[2], addr6p[3],

                        addr6p[4], addr6p[5], addr6p[6], addr6p[7]);

                inet6_aftype.input(1, addr6, (struct sockaddr *) &sap);

                printf(_("          inet6 addr: %s/%d"),

                 inet6_aftype.sprint((struct sockaddr *) &sap, 1), plen);

                printf(_(" Scope:"));

                switch (scope) {

                case 0:

                    printf(_("Global"));

                    break;

                case IPV6_ADDR_LINKLOCAL:

                    printf(_("Link"));

                    break;

                case IPV6_ADDR_SITELOCAL:

                    printf(_("Site"));

                    break;

                case IPV6_ADDR_COMPATv4:

                    printf(_("Compat"));

                    break;

                case IPV6_ADDR_LOOPBACK:

                    printf(_("Host"));

                    break;

                default:

                    printf(_("Unknown"));

                }

                printf("\n");

            }

        }

        fclose(f);

    }

#endif

#if HAVE_AFIPX

    if (ipxtype == NULL)

        ipxtype = get_afntype(AF_IPX);

    if (ipxtype != NULL) {

        if (ptr->has_ipx_bb)

            printf(_("          IPX/Ethernet II addr:%s\n"),

                   ipxtype->sprint(&ptr->ipxaddr_bb, 1));

        if (ptr->has_ipx_sn)

            printf(_("          IPX/Ethernet SNAP addr:%s\n"),

                   ipxtype->sprint(&ptr->ipxaddr_sn, 1));

        if (ptr->has_ipx_e2)

            printf(_("          IPX/Ethernet 802.2 addr:%s\n"),

                   ipxtype->sprint(&ptr->ipxaddr_e2, 1));

        if (ptr->has_ipx_e3)

            printf(_("          IPX/Ethernet 802.3 addr:%s\n"),

                   ipxtype->sprint(&ptr->ipxaddr_e3, 1));

    }

#endif

#if HAVE_AFATALK

    if (ddptype == NULL)

        ddptype = get_afntype(AF_APPLETALK);

    if (ddptype != NULL) {

        if (ptr->has_ddp)

            printf(_("          EtherTalk Phase 2 addr:%s\n"), ddptype->sprint(&ptr->ddpaddr, 1));

    }

#endif

#if HAVE_AFECONET

    if (ectype == NULL)

        ectype = get_afntype(AF_ECONET);

    if (ectype != NULL) {

        if (ptr->has_econet)

            printf(_("          econet addr:%s\n"), ectype->sprint(&ptr->ecaddr, 1));

    }

#endif

    printf("          ");

    if (ptr->flags == 0)

        printf(_("[NO FLAGS] "));

    if (ptr->flags & IFF_UP)

        printf(_("UP "));

    if (ptr->flags & IFF_BROADCAST)

        printf(_("BROADCAST "));

    if (ptr->flags & IFF_DEBUG)

        printf(_("DEBUG "));

    if (ptr->flags & IFF_LOOPBACK)

        printf(_("LOOPBACK "));

    if (ptr->flags & IFF_POINTOPOINT)

        printf(_("POINTOPOINT "));

    if (ptr->flags & IFF_NOTRAILERS)

        printf(_("NOTRAILERS "));

    if (ptr->flags & IFF_RUNNING)

        printf(_("RUNNING "));

    if (ptr->flags & IFF_NOARP)

        printf(_("NOARP "));

    if (ptr->flags & IFF_PROMISC)

        printf(_("PROMISC "));

    if (ptr->flags & IFF_ALLMULTI)

        printf(_("ALLMULTI "));

    if (ptr->flags & IFF_SLAVE)

        printf(_("SLAVE "));

    if (ptr->flags & IFF_MASTER)

        printf(_("MASTER "));

    if (ptr->flags & IFF_MULTICAST)

        printf(_("MULTICAST "));

#ifdef HAVE_DYNAMIC

    if (ptr->flags & IFF_DYNAMIC)

        printf(_("DYNAMIC "));

#endif

    printf(_(" MTU:%d  Metric:%d"),

           ptr->mtu, ptr->metric ? ptr->metric : 1);

#ifdef SIOCSKEEPALIVE

    if (ptr->outfill || ptr->keepalive)

        printf(_("  Outfill:%d  Keepalive:%d"),

               ptr->outfill, ptr->keepalive);

#endif

    printf("\n");

    /* If needed, display the interface statistics. */

    if (ptr->statistics_valid) {

        /* XXX: statistics are currently only printed for the primary address,

         *      not for the aliases, although strictly speaking they're shared

         *      by all addresses.

         */

        printf("          ");

        printf(_("RX packets:%lu errors:%lu dropped:%lu overruns:%lu frame:%lu\n"),

               ptr->stats.rx_packets, ptr->stats.rx_errors,

               ptr->stats.rx_dropped, ptr->stats.rx_fifo_errors,

               ptr->stats.rx_frame_errors);

        if (can_compress)

            printf(_("             compressed:%lu\n"), ptr->stats.rx_compressed);

        printf("          ");

        printf(_("TX packets:%lu errors:%lu dropped:%lu overruns:%lu carrier:%lu\n"),

               ptr->stats.tx_packets, ptr->stats.tx_errors,

               ptr->stats.tx_dropped, ptr->stats.tx_fifo_errors,

               ptr->stats.tx_carrier_errors);

        printf(_("          collisions:%lu "), ptr->stats.collisions);

        if (can_compress)

            printf(_("compressed:%lu "), ptr->stats.tx_compressed);

        if (ptr->tx_queue_len != -1)

            printf(_("txqueuelen:%d "), ptr->tx_queue_len);

        printf("\n");

    }

    if ((ptr->map.irq || ptr->map.mem_start || ptr->map.dma ||

         ptr->map.base_addr)) {

        printf("          ");

        if (ptr->map.irq)

            printf(_("Interrupt:%d "), ptr->map.irq);

        if (ptr->map.base_addr >= 0x100)        /* Only print devices using it for

                                                   I/O maps */

            printf(_("Base address:0x%x "), ptr->map.base_addr);

        if (ptr->map.mem_start) {

            printf(_("Memory:%lx-%lx "), ptr->map.mem_start, ptr->map.mem_end);

        }

        if (ptr->map.dma)

            printf(_("DMA chan:%x "), ptr->map.dma);

        printf("\n");

    }

    printf("\n");

}

static int if_print(char *ifname)

{

    int res;

    if (!ifname) {

        res = for_all_interfaces(do_if_print, &opt_a);

    } else {

        struct interface *ife;

        ife = lookup_interface(ifname);

        res = do_if_fetch(ife);

        if (res >= 0)

            ife_print(ife);

    }

    return res;

}

/* Set a certain interface flag. */

static int set_flag(char *ifname, short flag)

{

    struct ifreq ifr;

    strcpy(ifr.ifr_name, ifname);

    if (ioctl(skfd, SIOCGIFFLAGS, &ifr) < 0) {

        fprintf(stderr, _("%s: unknown interface: %s\n"),

                ifname, strerror(errno));

        return (-1);

    }

    strcpy(ifr.ifr_name, ifname);

    ifr.ifr_flags |= flag;

    if (ioctl(skfd, SIOCSIFFLAGS, &ifr) < 0) {

        perror("SIOCSIFFLAGS");

        return -1;

    }

    return (0);

}

/* Clear a certain interface flag. */

static int clr_flag(char *ifname, short flag)

{

    struct ifreq ifr;

    strcpy(ifr.ifr_name, ifname);

    if (ioctl(skfd, SIOCGIFFLAGS, &ifr) < 0) {

        fprintf(stderr, _("%s: unknown interface: %s\n"),

                ifname, strerror(errno));

        return -1;

    }

    strcpy(ifr.ifr_name, ifname);

    ifr.ifr_flags &= ~flag;

    if (ioctl(skfd, SIOCSIFFLAGS, &ifr) < 0) {

        perror("SIOCSIFFLAGS");

        return -1;

    }

    return (0);

}

static void usage(void)

{

    fprintf(stderr, _("Usage:\n  ifconfig [-a] [-i] [-v] <interface> [[<AF>] <address>]\n"));

    /* XXX: it would be useful to have the add/del syntax even without IPv6.

       the 2.1 interface address lists make this natural */

#ifdef HAVE_AFINET6

    fprintf(stderr, _("  [add <address>[/<prefixlen>]]\n"));

#ifdef SIOCDIFADDR

    fprintf(stderr, _("  [del <address>[/<prefixlen>]]\n"));

#endif

    /* XXX the kernel supports tunneling even without ipv6 */

#endif

#if HAVE_AFINET

    fprintf(stderr, _("  [[-]broadcast [<address>]]  [[-]pointopoint [<address>]]\n"));

    fprintf(stderr, _("  [netmask <address>]  [dstaddr <address>]  [tunnel <address>]\n"));

#endif

#ifdef SIOCSKEEPALIVE

    fprintf(stderr, _("  [outfill <NN>] [keepalive <NN>]\n"));

#endif

    fprintf(stderr, _("  [hw <HW> <address>]  [metric <NN>]  [mtu <NN>]\n"));

    fprintf(stderr, _("  [[-]trailers]  [[-]arp]  [[-]allmulti]\n"));

    fprintf(stderr, _("  [multicast]  [[-]promisc]\n"));

    fprintf(stderr, _("  [mem_start <NN>]  [io_addr <NN>]  [irq <NN>]  [media <type>]\n"));

#ifdef HAVE_TXQUEUELEN

    fprintf(stderr, _("  [txqueuelen <NN>]\n"));

#endif

#ifdef HAVE_DYNAMIC

    fprintf(stderr, _("  [[-]dynamic]\n"));

#endif

    fprintf(stderr, _("  [up|down] ...\n\n"));

    fprintf(stderr, _("  <HW>=Hardware Type.\n"));

    fprintf(stderr, _("  List of possible hardware types:\n"));

    print_hwlist(0); /* 1 = ARPable */

    fprintf(stderr, _("  <AF>=Address family. Default: %s\n"), DFLT_AF);

    fprintf(stderr, _("  List of possible address families:\n"));

    print_aflist(0); /* 1 = routeable */

    exit(E_USAGE);

}

static void version(void)

{

    fprintf(stderr, "%s\n%s\n", Release, Version);

    exit(1);

}

static int set_netmask(int skfd, struct ifreq *ifr, struct sockaddr *sa)

{

    int err = 0;

    memcpy((char *) &ifr->ifr_netmask, (char *) sa,

           sizeof(struct sockaddr));

    if (ioctl(skfd, SIOCSIFNETMASK, ifr) < 0) {

        fprintf(stderr, "SIOCSIFNETMASK: %s\n",

                strerror(errno));

        err = 1;

    }

    return 0;

}

int main(int argc, char **argv)

{

    struct sockaddr sa;

    char host[128];

    struct aftype *ap;

    struct hwtype *hw;

    struct ifreq ifr;

    int goterr = 0, didnetmask = 0;

    char **spp;

    int fd;

#if HAVE_AFINET6

    extern struct aftype inet6_aftype;

    struct sockaddr_in6 sa6;

    struct in6_ifreq ifr6;

    unsigned long prefix_len;

    char *cp;

#endif

#if I18N

    bindtextdomain("net-tools", "/usr/share/locale");

    textdomain("net-tools");

#endif

    /* Create a channel to the NET kernel. */

    if ((skfd = sockets_open(0)) < 0) {

        perror("socket");

        exit(1);

    }

    /* Find any options. */

    argc--;

    argv++;

    while (argc && *argv[0] == '-') {

        if (!strcmp(*argv, "-a"))

            opt_a = 1;

        if (!strcmp(*argv, "-v"))

            opt_v = 1;

        if (!strcmp(*argv, "-V") || !strcmp(*argv, "-version") ||

            !strcmp(*argv, "--version"))

            version();

        if (!strcmp(*argv, "-?") || !strcmp(*argv, "-h") ||

            !strcmp(*argv, "-help") || !strcmp(*argv, "--help"))

            usage();

        argv++;

        argc--;

    }

    /* Do we have to show the current setup? */

    if (argc == 0) {

        int err = if_print((char *) NULL);

        (void) close(skfd);

        exit(err < 0);

    }

    /* No. Fetch the interface name. */

    spp = argv;

    safe_strncpy(ifr.ifr_name, *spp++, IFNAMSIZ);

    if (*spp == (char *) NULL) {

        int err = if_print(ifr.ifr_name);

        (void) close(skfd);

        exit(err < 0);

    }

    /* The next argument is either an address family name, or an option. */

    if ((ap = get_aftype(*spp)) == NULL)

        ap = get_aftype(DFLT_AF);

    else {

        /* XXX: should print the current setup if no args left, but only

           for this family */

        spp++;

        addr_family = ap->af;

    }

    if (sockets_open(addr_family) < 0) {

        perror("family socket");

        exit(1);

    }

    /* Process the remaining arguments. */

    while (*spp != (char *) NULL) {

        if (!strcmp(*spp, "arp")) {

            goterr |= clr_flag(ifr.ifr_name, IFF_NOARP);

            spp++;

            continue;

        }

        if (!strcmp(*spp, "-arp")) {

            goterr |= set_flag(ifr.ifr_name, IFF_NOARP);

            spp++;

            continue;

        }

#ifdef IFF_PORTSEL

        if (!strcmp(*spp, "media") || !strcmp(*spp, "port")) {

            if (*++spp == NULL)

                usage();

            if (!strcasecmp(*spp, "auto")) {

                goterr |= set_flag(ifr.ifr_name, IFF_AUTOMEDIA);

            } else {

                int i, j, newport;

                char *endp;

                newport = strtol(*spp, &endp, 10);

                if (*endp != 0) {

                    newport = -1;

                    for (i = 0; if_port_text[i][0] && newport == -1; i++) {

                        for (j = 0; if_port_text[i][j]; j++) {

                            if (!strcasecmp(*spp, if_port_text[i][j])) {

                                newport = i;

                                break;

                            }

                        }

                    }

                }

                spp++;

                if (newport == -1) {

                    fprintf(stderr, _("Unknown media type.\n"));

                    goterr = 1;

                } else {

                    if (ioctl(skfd, SIOCGIFMAP, &ifr) < 0) {

                        goterr = 1;

                        continue;

                    }