[1765] | 1 | /* vi: set sw=4 ts=4: */
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[821] | 2 | /*
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| 3 | * ipaddress.c "ip address".
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| 4 | *
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| 5 | * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
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| 6 | *
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| 7 | * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
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| 8 | *
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| 9 | * Changes:
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| 10 | * Laszlo Valko <valko@linux.karinthy.hu> 990223: address label must be zero terminated
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| 11 | */
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| 12 |
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[1765] | 13 | //#include <sys/socket.h>
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| 14 | //#include <sys/ioctl.h>
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[821] | 15 | #include <fnmatch.h>
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| 16 | #include <net/if.h>
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| 17 | #include <net/if_arp.h>
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| 18 |
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[1765] | 19 | #include "ip_common.h" /* #include "libbb.h" is inside */
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[821] | 20 | #include "rt_names.h"
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| 21 | #include "utils.h"
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| 22 |
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| 23 |
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[1765] | 24 | typedef struct filter_t {
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[821] | 25 | int ifindex;
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| 26 | int family;
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| 27 | int oneline;
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| 28 | int showqueue;
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| 29 | inet_prefix pfx;
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| 30 | int scope, scopemask;
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| 31 | int flags, flagmask;
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| 32 | int up;
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| 33 | char *label;
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| 34 | int flushed;
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| 35 | char *flushb;
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| 36 | int flushp;
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| 37 | int flushe;
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| 38 | struct rtnl_handle *rth;
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[1765] | 39 | } filter_t;
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[821] | 40 |
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[1765] | 41 | #define filter (*(filter_t*)&bb_common_bufsiz1)
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| 42 |
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| 43 |
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[821] | 44 | static void print_link_flags(FILE *fp, unsigned flags, unsigned mdown)
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| 45 | {
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| 46 | fprintf(fp, "<");
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| 47 | flags &= ~IFF_RUNNING;
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| 48 | #define _PF(f) if (flags&IFF_##f) { \
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[1765] | 49 | flags &= ~IFF_##f; \
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[821] | 50 | fprintf(fp, #f "%s", flags ? "," : ""); }
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| 51 | _PF(LOOPBACK);
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| 52 | _PF(BROADCAST);
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| 53 | _PF(POINTOPOINT);
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| 54 | _PF(MULTICAST);
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| 55 | _PF(NOARP);
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| 56 | #if 0
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| 57 | _PF(ALLMULTI);
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| 58 | _PF(PROMISC);
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| 59 | _PF(MASTER);
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| 60 | _PF(SLAVE);
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| 61 | _PF(DEBUG);
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| 62 | _PF(DYNAMIC);
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| 63 | _PF(AUTOMEDIA);
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| 64 | _PF(PORTSEL);
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| 65 | _PF(NOTRAILERS);
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| 66 | #endif
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| 67 | _PF(UP);
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| 68 | #undef _PF
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| 69 | if (flags)
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| 70 | fprintf(fp, "%x", flags);
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| 71 | if (mdown)
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| 72 | fprintf(fp, ",M-DOWN");
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| 73 | fprintf(fp, "> ");
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| 74 | }
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| 75 |
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| 76 | static void print_queuelen(char *name)
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| 77 | {
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| 78 | struct ifreq ifr;
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| 79 | int s;
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| 80 |
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| 81 | s = socket(AF_INET, SOCK_STREAM, 0);
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| 82 | if (s < 0)
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| 83 | return;
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| 84 |
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| 85 | memset(&ifr, 0, sizeof(ifr));
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[1765] | 86 | strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
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| 87 | if (ioctl_or_warn(s, SIOCGIFTXQLEN, &ifr) < 0) {
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[821] | 88 | close(s);
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| 89 | return;
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| 90 | }
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| 91 | close(s);
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| 92 |
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| 93 | if (ifr.ifr_qlen)
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| 94 | printf("qlen %d", ifr.ifr_qlen);
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| 95 | }
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| 96 |
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| 97 | static int print_linkinfo(struct sockaddr_nl ATTRIBUTE_UNUSED *who,
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[1765] | 98 | const struct nlmsghdr *n, void ATTRIBUTE_UNUSED *arg)
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[821] | 99 | {
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| 100 | FILE *fp = (FILE*)arg;
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| 101 | struct ifinfomsg *ifi = NLMSG_DATA(n);
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| 102 | struct rtattr * tb[IFLA_MAX+1];
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| 103 | int len = n->nlmsg_len;
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| 104 | unsigned m_flag = 0;
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| 105 |
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| 106 | if (n->nlmsg_type != RTM_NEWLINK && n->nlmsg_type != RTM_DELLINK)
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| 107 | return 0;
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| 108 |
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| 109 | len -= NLMSG_LENGTH(sizeof(*ifi));
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| 110 | if (len < 0)
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| 111 | return -1;
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| 112 |
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| 113 | if (filter.ifindex && ifi->ifi_index != filter.ifindex)
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| 114 | return 0;
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| 115 | if (filter.up && !(ifi->ifi_flags&IFF_UP))
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| 116 | return 0;
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| 117 |
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| 118 | memset(tb, 0, sizeof(tb));
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| 119 | parse_rtattr(tb, IFLA_MAX, IFLA_RTA(ifi), len);
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| 120 | if (tb[IFLA_IFNAME] == NULL) {
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| 121 | bb_error_msg("nil ifname");
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| 122 | return -1;
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| 123 | }
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[1765] | 124 | if (filter.label
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| 125 | && (!filter.family || filter.family == AF_PACKET)
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| 126 | && fnmatch(filter.label, RTA_DATA(tb[IFLA_IFNAME]), 0)
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| 127 | ) {
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[821] | 128 | return 0;
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[1765] | 129 | }
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[821] | 130 |
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| 131 | if (n->nlmsg_type == RTM_DELLINK)
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| 132 | fprintf(fp, "Deleted ");
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| 133 |
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| 134 | fprintf(fp, "%d: %s", ifi->ifi_index,
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| 135 | tb[IFLA_IFNAME] ? (char*)RTA_DATA(tb[IFLA_IFNAME]) : "<nil>");
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| 136 |
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| 137 | if (tb[IFLA_LINK]) {
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| 138 | SPRINT_BUF(b1);
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| 139 | int iflink = *(int*)RTA_DATA(tb[IFLA_LINK]);
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| 140 | if (iflink == 0)
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| 141 | fprintf(fp, "@NONE: ");
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| 142 | else {
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| 143 | fprintf(fp, "@%s: ", ll_idx_n2a(iflink, b1));
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| 144 | m_flag = ll_index_to_flags(iflink);
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| 145 | m_flag = !(m_flag & IFF_UP);
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| 146 | }
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| 147 | } else {
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| 148 | fprintf(fp, ": ");
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| 149 | }
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| 150 | print_link_flags(fp, ifi->ifi_flags, m_flag);
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| 151 |
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| 152 | if (tb[IFLA_MTU])
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| 153 | fprintf(fp, "mtu %u ", *(int*)RTA_DATA(tb[IFLA_MTU]));
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| 154 | if (tb[IFLA_QDISC])
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| 155 | fprintf(fp, "qdisc %s ", (char*)RTA_DATA(tb[IFLA_QDISC]));
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| 156 | #ifdef IFLA_MASTER
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| 157 | if (tb[IFLA_MASTER]) {
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| 158 | SPRINT_BUF(b1);
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| 159 | fprintf(fp, "master %s ", ll_idx_n2a(*(int*)RTA_DATA(tb[IFLA_MASTER]), b1));
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| 160 | }
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| 161 | #endif
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| 162 | if (filter.showqueue)
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| 163 | print_queuelen((char*)RTA_DATA(tb[IFLA_IFNAME]));
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| 164 |
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| 165 | if (!filter.family || filter.family == AF_PACKET) {
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| 166 | SPRINT_BUF(b1);
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[1765] | 167 | fprintf(fp, "%c link/%s ", _SL_, ll_type_n2a(ifi->ifi_type, b1, sizeof(b1)));
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[821] | 168 |
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| 169 | if (tb[IFLA_ADDRESS]) {
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| 170 | fprintf(fp, "%s", ll_addr_n2a(RTA_DATA(tb[IFLA_ADDRESS]),
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| 171 | RTA_PAYLOAD(tb[IFLA_ADDRESS]),
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| 172 | ifi->ifi_type,
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| 173 | b1, sizeof(b1)));
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| 174 | }
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| 175 | if (tb[IFLA_BROADCAST]) {
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| 176 | if (ifi->ifi_flags&IFF_POINTOPOINT)
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| 177 | fprintf(fp, " peer ");
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| 178 | else
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| 179 | fprintf(fp, " brd ");
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| 180 | fprintf(fp, "%s", ll_addr_n2a(RTA_DATA(tb[IFLA_BROADCAST]),
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| 181 | RTA_PAYLOAD(tb[IFLA_BROADCAST]),
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| 182 | ifi->ifi_type,
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| 183 | b1, sizeof(b1)));
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| 184 | }
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| 185 | }
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[1765] | 186 | fputc('\n', fp);
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[821] | 187 | fflush(fp);
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| 188 | return 0;
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| 189 | }
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| 190 |
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| 191 | static int flush_update(void)
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| 192 | {
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| 193 | if (rtnl_send(filter.rth, filter.flushb, filter.flushp) < 0) {
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[1765] | 194 | bb_perror_msg("failed to send flush request");
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[821] | 195 | return -1;
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| 196 | }
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| 197 | filter.flushp = 0;
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| 198 | return 0;
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| 199 | }
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| 200 |
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| 201 | static int print_addrinfo(struct sockaddr_nl ATTRIBUTE_UNUSED *who,
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| 202 | struct nlmsghdr *n, void ATTRIBUTE_UNUSED *arg)
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| 203 | {
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| 204 | FILE *fp = (FILE*)arg;
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| 205 | struct ifaddrmsg *ifa = NLMSG_DATA(n);
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| 206 | int len = n->nlmsg_len;
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| 207 | struct rtattr * rta_tb[IFA_MAX+1];
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| 208 | char abuf[256];
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| 209 | SPRINT_BUF(b1);
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| 210 |
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| 211 | if (n->nlmsg_type != RTM_NEWADDR && n->nlmsg_type != RTM_DELADDR)
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| 212 | return 0;
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| 213 | len -= NLMSG_LENGTH(sizeof(*ifa));
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| 214 | if (len < 0) {
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| 215 | bb_error_msg("wrong nlmsg len %d", len);
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| 216 | return -1;
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| 217 | }
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| 218 |
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| 219 | if (filter.flushb && n->nlmsg_type != RTM_NEWADDR)
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| 220 | return 0;
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| 221 |
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| 222 | memset(rta_tb, 0, sizeof(rta_tb));
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| 223 | parse_rtattr(rta_tb, IFA_MAX, IFA_RTA(ifa), n->nlmsg_len - NLMSG_LENGTH(sizeof(*ifa)));
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| 224 |
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| 225 | if (!rta_tb[IFA_LOCAL])
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| 226 | rta_tb[IFA_LOCAL] = rta_tb[IFA_ADDRESS];
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| 227 | if (!rta_tb[IFA_ADDRESS])
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| 228 | rta_tb[IFA_ADDRESS] = rta_tb[IFA_LOCAL];
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| 229 |
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| 230 | if (filter.ifindex && filter.ifindex != ifa->ifa_index)
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| 231 | return 0;
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| 232 | if ((filter.scope^ifa->ifa_scope)&filter.scopemask)
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| 233 | return 0;
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| 234 | if ((filter.flags^ifa->ifa_flags)&filter.flagmask)
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| 235 | return 0;
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| 236 | if (filter.label) {
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| 237 | const char *label;
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| 238 | if (rta_tb[IFA_LABEL])
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| 239 | label = RTA_DATA(rta_tb[IFA_LABEL]);
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| 240 | else
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| 241 | label = ll_idx_n2a(ifa->ifa_index, b1);
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| 242 | if (fnmatch(filter.label, label, 0) != 0)
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| 243 | return 0;
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| 244 | }
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| 245 | if (filter.pfx.family) {
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| 246 | if (rta_tb[IFA_LOCAL]) {
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| 247 | inet_prefix dst;
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| 248 | memset(&dst, 0, sizeof(dst));
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| 249 | dst.family = ifa->ifa_family;
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| 250 | memcpy(&dst.data, RTA_DATA(rta_tb[IFA_LOCAL]), RTA_PAYLOAD(rta_tb[IFA_LOCAL]));
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| 251 | if (inet_addr_match(&dst, &filter.pfx, filter.pfx.bitlen))
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| 252 | return 0;
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| 253 | }
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| 254 | }
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| 255 |
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| 256 | if (filter.flushb) {
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| 257 | struct nlmsghdr *fn;
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| 258 | if (NLMSG_ALIGN(filter.flushp) + n->nlmsg_len > filter.flushe) {
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| 259 | if (flush_update())
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| 260 | return -1;
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| 261 | }
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| 262 | fn = (struct nlmsghdr*)(filter.flushb + NLMSG_ALIGN(filter.flushp));
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| 263 | memcpy(fn, n, n->nlmsg_len);
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| 264 | fn->nlmsg_type = RTM_DELADDR;
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| 265 | fn->nlmsg_flags = NLM_F_REQUEST;
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| 266 | fn->nlmsg_seq = ++filter.rth->seq;
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| 267 | filter.flushp = (((char*)fn) + n->nlmsg_len) - filter.flushb;
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| 268 | filter.flushed++;
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| 269 | return 0;
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| 270 | }
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| 271 |
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| 272 | if (n->nlmsg_type == RTM_DELADDR)
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| 273 | fprintf(fp, "Deleted ");
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| 274 |
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| 275 | if (filter.oneline)
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| 276 | fprintf(fp, "%u: %s", ifa->ifa_index, ll_index_to_name(ifa->ifa_index));
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| 277 | if (ifa->ifa_family == AF_INET)
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| 278 | fprintf(fp, " inet ");
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| 279 | else if (ifa->ifa_family == AF_INET6)
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| 280 | fprintf(fp, " inet6 ");
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| 281 | else
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| 282 | fprintf(fp, " family %d ", ifa->ifa_family);
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| 283 |
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| 284 | if (rta_tb[IFA_LOCAL]) {
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| 285 | fprintf(fp, "%s", rt_addr_n2a(ifa->ifa_family,
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| 286 | RTA_PAYLOAD(rta_tb[IFA_LOCAL]),
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| 287 | RTA_DATA(rta_tb[IFA_LOCAL]),
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| 288 | abuf, sizeof(abuf)));
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| 289 |
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| 290 | if (rta_tb[IFA_ADDRESS] == NULL ||
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| 291 | memcmp(RTA_DATA(rta_tb[IFA_ADDRESS]), RTA_DATA(rta_tb[IFA_LOCAL]), 4) == 0) {
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| 292 | fprintf(fp, "/%d ", ifa->ifa_prefixlen);
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| 293 | } else {
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| 294 | fprintf(fp, " peer %s/%d ",
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| 295 | rt_addr_n2a(ifa->ifa_family,
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| 296 | RTA_PAYLOAD(rta_tb[IFA_ADDRESS]),
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| 297 | RTA_DATA(rta_tb[IFA_ADDRESS]),
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| 298 | abuf, sizeof(abuf)),
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| 299 | ifa->ifa_prefixlen);
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| 300 | }
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| 301 | }
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| 302 |
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| 303 | if (rta_tb[IFA_BROADCAST]) {
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| 304 | fprintf(fp, "brd %s ",
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| 305 | rt_addr_n2a(ifa->ifa_family,
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| 306 | RTA_PAYLOAD(rta_tb[IFA_BROADCAST]),
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| 307 | RTA_DATA(rta_tb[IFA_BROADCAST]),
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| 308 | abuf, sizeof(abuf)));
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| 309 | }
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| 310 | if (rta_tb[IFA_ANYCAST]) {
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| 311 | fprintf(fp, "any %s ",
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| 312 | rt_addr_n2a(ifa->ifa_family,
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| 313 | RTA_PAYLOAD(rta_tb[IFA_ANYCAST]),
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| 314 | RTA_DATA(rta_tb[IFA_ANYCAST]),
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| 315 | abuf, sizeof(abuf)));
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| 316 | }
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| 317 | fprintf(fp, "scope %s ", rtnl_rtscope_n2a(ifa->ifa_scope, b1, sizeof(b1)));
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| 318 | if (ifa->ifa_flags&IFA_F_SECONDARY) {
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| 319 | ifa->ifa_flags &= ~IFA_F_SECONDARY;
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| 320 | fprintf(fp, "secondary ");
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| 321 | }
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| 322 | if (ifa->ifa_flags&IFA_F_TENTATIVE) {
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| 323 | ifa->ifa_flags &= ~IFA_F_TENTATIVE;
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| 324 | fprintf(fp, "tentative ");
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| 325 | }
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| 326 | if (ifa->ifa_flags&IFA_F_DEPRECATED) {
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| 327 | ifa->ifa_flags &= ~IFA_F_DEPRECATED;
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| 328 | fprintf(fp, "deprecated ");
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| 329 | }
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| 330 | if (!(ifa->ifa_flags&IFA_F_PERMANENT)) {
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| 331 | fprintf(fp, "dynamic ");
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| 332 | } else
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| 333 | ifa->ifa_flags &= ~IFA_F_PERMANENT;
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| 334 | if (ifa->ifa_flags)
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| 335 | fprintf(fp, "flags %02x ", ifa->ifa_flags);
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| 336 | if (rta_tb[IFA_LABEL])
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| 337 | fprintf(fp, "%s", (char*)RTA_DATA(rta_tb[IFA_LABEL]));
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| 338 | if (rta_tb[IFA_CACHEINFO]) {
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| 339 | struct ifa_cacheinfo *ci = RTA_DATA(rta_tb[IFA_CACHEINFO]);
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| 340 | char buf[128];
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[1765] | 341 | fputc(_SL_, fp);
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[821] | 342 | if (ci->ifa_valid == 0xFFFFFFFFU)
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| 343 | sprintf(buf, "valid_lft forever");
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| 344 | else
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| 345 | sprintf(buf, "valid_lft %dsec", ci->ifa_valid);
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| 346 | if (ci->ifa_prefered == 0xFFFFFFFFU)
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| 347 | sprintf(buf+strlen(buf), " preferred_lft forever");
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| 348 | else
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| 349 | sprintf(buf+strlen(buf), " preferred_lft %dsec", ci->ifa_prefered);
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| 350 | fprintf(fp, " %s", buf);
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| 351 | }
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[1765] | 352 | fputc('\n', fp);
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[821] | 353 | fflush(fp);
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| 354 | return 0;
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| 355 | }
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| 356 |
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| 357 |
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| 358 | struct nlmsg_list
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| 359 | {
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| 360 | struct nlmsg_list *next;
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| 361 | struct nlmsghdr h;
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| 362 | };
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| 363 |
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| 364 | static int print_selected_addrinfo(int ifindex, struct nlmsg_list *ainfo, FILE *fp)
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| 365 | {
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[1765] | 366 | for (; ainfo; ainfo = ainfo->next) {
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[821] | 367 | struct nlmsghdr *n = &ainfo->h;
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| 368 | struct ifaddrmsg *ifa = NLMSG_DATA(n);
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| 369 |
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| 370 | if (n->nlmsg_type != RTM_NEWADDR)
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| 371 | continue;
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| 372 |
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| 373 | if (n->nlmsg_len < NLMSG_LENGTH(sizeof(ifa)))
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| 374 | return -1;
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| 375 |
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| 376 | if (ifa->ifa_index != ifindex ||
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| 377 | (filter.family && filter.family != ifa->ifa_family))
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| 378 | continue;
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| 379 |
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| 380 | print_addrinfo(NULL, n, fp);
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| 381 | }
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| 382 | return 0;
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| 383 | }
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| 384 |
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| 385 |
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| 386 | static int store_nlmsg(struct sockaddr_nl *who, struct nlmsghdr *n, void *arg)
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| 387 | {
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| 388 | struct nlmsg_list **linfo = (struct nlmsg_list**)arg;
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| 389 | struct nlmsg_list *h;
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| 390 | struct nlmsg_list **lp;
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| 391 |
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| 392 | h = malloc(n->nlmsg_len+sizeof(void*));
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| 393 | if (h == NULL)
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| 394 | return -1;
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| 395 |
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| 396 | memcpy(&h->h, n, n->nlmsg_len);
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| 397 | h->next = NULL;
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| 398 |
|
---|
| 399 | for (lp = linfo; *lp; lp = &(*lp)->next) /* NOTHING */;
|
---|
| 400 | *lp = h;
|
---|
| 401 |
|
---|
| 402 | ll_remember_index(who, n, NULL);
|
---|
| 403 | return 0;
|
---|
| 404 | }
|
---|
| 405 |
|
---|
| 406 | static void ipaddr_reset_filter(int _oneline)
|
---|
| 407 | {
|
---|
| 408 | memset(&filter, 0, sizeof(filter));
|
---|
| 409 | filter.oneline = _oneline;
|
---|
| 410 | }
|
---|
| 411 |
|
---|
[1765] | 412 | /* Return value becomes exitcode. It's okay to not return at all */
|
---|
[821] | 413 | int ipaddr_list_or_flush(int argc, char **argv, int flush)
|
---|
| 414 | {
|
---|
[1765] | 415 | static const char option[] ALIGN1 = "to\0""scope\0""up\0""label\0""dev\0";
|
---|
[821] | 416 |
|
---|
| 417 | struct nlmsg_list *linfo = NULL;
|
---|
| 418 | struct nlmsg_list *ainfo = NULL;
|
---|
| 419 | struct nlmsg_list *l;
|
---|
| 420 | struct rtnl_handle rth;
|
---|
| 421 | char *filter_dev = NULL;
|
---|
| 422 | int no_link = 0;
|
---|
| 423 |
|
---|
| 424 | ipaddr_reset_filter(oneline);
|
---|
| 425 | filter.showqueue = 1;
|
---|
| 426 |
|
---|
| 427 | if (filter.family == AF_UNSPEC)
|
---|
| 428 | filter.family = preferred_family;
|
---|
| 429 |
|
---|
| 430 | if (flush) {
|
---|
| 431 | if (argc <= 0) {
|
---|
[1765] | 432 | bb_error_msg_and_die(bb_msg_requires_arg, "flush");
|
---|
[821] | 433 | }
|
---|
| 434 | if (filter.family == AF_PACKET) {
|
---|
[1765] | 435 | bb_error_msg_and_die("cannot flush link addresses");
|
---|
[821] | 436 | }
|
---|
| 437 | }
|
---|
| 438 |
|
---|
| 439 | while (argc > 0) {
|
---|
[1765] | 440 | const int option_num = index_in_strings(option, *argv);
|
---|
[821] | 441 | switch (option_num) {
|
---|
| 442 | case 0: /* to */
|
---|
| 443 | NEXT_ARG();
|
---|
| 444 | get_prefix(&filter.pfx, *argv, filter.family);
|
---|
| 445 | if (filter.family == AF_UNSPEC) {
|
---|
| 446 | filter.family = filter.pfx.family;
|
---|
| 447 | }
|
---|
| 448 | break;
|
---|
| 449 | case 1: /* scope */
|
---|
| 450 | {
|
---|
| 451 | uint32_t scope = 0;
|
---|
| 452 | NEXT_ARG();
|
---|
| 453 | filter.scopemask = -1;
|
---|
| 454 | if (rtnl_rtscope_a2n(&scope, *argv)) {
|
---|
| 455 | if (strcmp(*argv, "all") != 0) {
|
---|
| 456 | invarg(*argv, "scope");
|
---|
| 457 | }
|
---|
| 458 | scope = RT_SCOPE_NOWHERE;
|
---|
| 459 | filter.scopemask = 0;
|
---|
| 460 | }
|
---|
| 461 | filter.scope = scope;
|
---|
| 462 | break;
|
---|
| 463 | }
|
---|
| 464 | case 2: /* up */
|
---|
| 465 | filter.up = 1;
|
---|
| 466 | break;
|
---|
| 467 | case 3: /* label */
|
---|
| 468 | NEXT_ARG();
|
---|
| 469 | filter.label = *argv;
|
---|
| 470 | break;
|
---|
| 471 | case 4: /* dev */
|
---|
| 472 | NEXT_ARG();
|
---|
| 473 | default:
|
---|
| 474 | if (filter_dev) {
|
---|
| 475 | duparg2("dev", *argv);
|
---|
| 476 | }
|
---|
| 477 | filter_dev = *argv;
|
---|
| 478 | }
|
---|
| 479 | argv++;
|
---|
| 480 | argc--;
|
---|
| 481 | }
|
---|
| 482 |
|
---|
[1765] | 483 | xrtnl_open(&rth);
|
---|
[821] | 484 |
|
---|
[1765] | 485 | xrtnl_wilddump_request(&rth, preferred_family, RTM_GETLINK);
|
---|
| 486 | xrtnl_dump_filter(&rth, store_nlmsg, &linfo);
|
---|
[821] | 487 |
|
---|
| 488 | if (filter_dev) {
|
---|
[1765] | 489 | filter.ifindex = xll_name_to_index(filter_dev);
|
---|
[821] | 490 | }
|
---|
| 491 |
|
---|
| 492 | if (flush) {
|
---|
| 493 | char flushb[4096-512];
|
---|
| 494 |
|
---|
| 495 | filter.flushb = flushb;
|
---|
| 496 | filter.flushp = 0;
|
---|
| 497 | filter.flushe = sizeof(flushb);
|
---|
| 498 | filter.rth = &rth;
|
---|
| 499 |
|
---|
| 500 | for (;;) {
|
---|
[1765] | 501 | xrtnl_wilddump_request(&rth, filter.family, RTM_GETADDR);
|
---|
[821] | 502 | filter.flushed = 0;
|
---|
[1765] | 503 | xrtnl_dump_filter(&rth, print_addrinfo, stdout);
|
---|
[821] | 504 | if (filter.flushed == 0) {
|
---|
| 505 | return 0;
|
---|
| 506 | }
|
---|
| 507 | if (flush_update() < 0)
|
---|
[1765] | 508 | return 1;
|
---|
[821] | 509 | }
|
---|
| 510 | }
|
---|
| 511 |
|
---|
| 512 | if (filter.family != AF_PACKET) {
|
---|
[1765] | 513 | xrtnl_wilddump_request(&rth, filter.family, RTM_GETADDR);
|
---|
| 514 | xrtnl_dump_filter(&rth, store_nlmsg, &ainfo);
|
---|
[821] | 515 | }
|
---|
| 516 |
|
---|
| 517 |
|
---|
| 518 | if (filter.family && filter.family != AF_PACKET) {
|
---|
| 519 | struct nlmsg_list **lp;
|
---|
| 520 | lp=&linfo;
|
---|
| 521 |
|
---|
| 522 | if (filter.oneline)
|
---|
| 523 | no_link = 1;
|
---|
| 524 |
|
---|
| 525 | while ((l=*lp)!=NULL) {
|
---|
| 526 | int ok = 0;
|
---|
| 527 | struct ifinfomsg *ifi = NLMSG_DATA(&l->h);
|
---|
| 528 | struct nlmsg_list *a;
|
---|
| 529 |
|
---|
| 530 | for (a=ainfo; a; a=a->next) {
|
---|
| 531 | struct nlmsghdr *n = &a->h;
|
---|
| 532 | struct ifaddrmsg *ifa = NLMSG_DATA(n);
|
---|
| 533 |
|
---|
| 534 | if (ifa->ifa_index != ifi->ifi_index ||
|
---|
| 535 | (filter.family && filter.family != ifa->ifa_family))
|
---|
| 536 | continue;
|
---|
| 537 | if ((filter.scope^ifa->ifa_scope)&filter.scopemask)
|
---|
| 538 | continue;
|
---|
| 539 | if ((filter.flags^ifa->ifa_flags)&filter.flagmask)
|
---|
| 540 | continue;
|
---|
| 541 | if (filter.pfx.family || filter.label) {
|
---|
| 542 | struct rtattr *tb[IFA_MAX+1];
|
---|
| 543 | memset(tb, 0, sizeof(tb));
|
---|
| 544 | parse_rtattr(tb, IFA_MAX, IFA_RTA(ifa), IFA_PAYLOAD(n));
|
---|
| 545 | if (!tb[IFA_LOCAL])
|
---|
| 546 | tb[IFA_LOCAL] = tb[IFA_ADDRESS];
|
---|
| 547 |
|
---|
| 548 | if (filter.pfx.family && tb[IFA_LOCAL]) {
|
---|
| 549 | inet_prefix dst;
|
---|
| 550 | memset(&dst, 0, sizeof(dst));
|
---|
| 551 | dst.family = ifa->ifa_family;
|
---|
| 552 | memcpy(&dst.data, RTA_DATA(tb[IFA_LOCAL]), RTA_PAYLOAD(tb[IFA_LOCAL]));
|
---|
| 553 | if (inet_addr_match(&dst, &filter.pfx, filter.pfx.bitlen))
|
---|
| 554 | continue;
|
---|
| 555 | }
|
---|
| 556 | if (filter.label) {
|
---|
| 557 | SPRINT_BUF(b1);
|
---|
| 558 | const char *label;
|
---|
| 559 | if (tb[IFA_LABEL])
|
---|
| 560 | label = RTA_DATA(tb[IFA_LABEL]);
|
---|
| 561 | else
|
---|
| 562 | label = ll_idx_n2a(ifa->ifa_index, b1);
|
---|
| 563 | if (fnmatch(filter.label, label, 0) != 0)
|
---|
| 564 | continue;
|
---|
| 565 | }
|
---|
| 566 | }
|
---|
| 567 |
|
---|
| 568 | ok = 1;
|
---|
| 569 | break;
|
---|
| 570 | }
|
---|
| 571 | if (!ok)
|
---|
| 572 | *lp = l->next;
|
---|
| 573 | else
|
---|
| 574 | lp = &l->next;
|
---|
| 575 | }
|
---|
| 576 | }
|
---|
| 577 |
|
---|
[1765] | 578 | for (l = linfo; l; l = l->next) {
|
---|
[821] | 579 | if (no_link || print_linkinfo(NULL, &l->h, stdout) == 0) {
|
---|
| 580 | struct ifinfomsg *ifi = NLMSG_DATA(&l->h);
|
---|
| 581 | if (filter.family != AF_PACKET)
|
---|
| 582 | print_selected_addrinfo(ifi->ifi_index, ainfo, stdout);
|
---|
| 583 | }
|
---|
[1765] | 584 | fflush(stdout); /* why? */
|
---|
[821] | 585 | }
|
---|
| 586 |
|
---|
[1765] | 587 | return 0;
|
---|
[821] | 588 | }
|
---|
| 589 |
|
---|
| 590 | static int default_scope(inet_prefix *lcl)
|
---|
| 591 | {
|
---|
| 592 | if (lcl->family == AF_INET) {
|
---|
[1765] | 593 | if (lcl->bytelen >= 1 && *(uint8_t*)&lcl->data == 127)
|
---|
[821] | 594 | return RT_SCOPE_HOST;
|
---|
| 595 | }
|
---|
| 596 | return 0;
|
---|
| 597 | }
|
---|
| 598 |
|
---|
[1765] | 599 | /* Return value becomes exitcode. It's okay to not return at all */
|
---|
[821] | 600 | static int ipaddr_modify(int cmd, int argc, char **argv)
|
---|
| 601 | {
|
---|
[1765] | 602 | static const char option[] ALIGN1 =
|
---|
| 603 | "peer\0""remote\0""broadcast\0""brd\0"
|
---|
| 604 | "anycast\0""scope\0""dev\0""label\0""local\0";
|
---|
[821] | 605 | struct rtnl_handle rth;
|
---|
| 606 | struct {
|
---|
[1765] | 607 | struct nlmsghdr n;
|
---|
| 608 | struct ifaddrmsg ifa;
|
---|
| 609 | char buf[256];
|
---|
[821] | 610 | } req;
|
---|
[1765] | 611 | char *d = NULL;
|
---|
| 612 | char *l = NULL;
|
---|
[821] | 613 | inet_prefix lcl;
|
---|
| 614 | inet_prefix peer;
|
---|
| 615 | int local_len = 0;
|
---|
| 616 | int peer_len = 0;
|
---|
| 617 | int brd_len = 0;
|
---|
| 618 | int any_len = 0;
|
---|
[1765] | 619 | bool scoped = 0;
|
---|
[821] | 620 |
|
---|
| 621 | memset(&req, 0, sizeof(req));
|
---|
| 622 |
|
---|
| 623 | req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifaddrmsg));
|
---|
| 624 | req.n.nlmsg_flags = NLM_F_REQUEST;
|
---|
| 625 | req.n.nlmsg_type = cmd;
|
---|
| 626 | req.ifa.ifa_family = preferred_family;
|
---|
| 627 |
|
---|
| 628 | while (argc > 0) {
|
---|
[1765] | 629 | const int option_num = index_in_strings(option, *argv);
|
---|
[821] | 630 | switch (option_num) {
|
---|
| 631 | case 0: /* peer */
|
---|
| 632 | case 1: /* remote */
|
---|
| 633 | NEXT_ARG();
|
---|
| 634 |
|
---|
| 635 | if (peer_len) {
|
---|
| 636 | duparg("peer", *argv);
|
---|
| 637 | }
|
---|
| 638 | get_prefix(&peer, *argv, req.ifa.ifa_family);
|
---|
| 639 | peer_len = peer.bytelen;
|
---|
| 640 | if (req.ifa.ifa_family == AF_UNSPEC) {
|
---|
| 641 | req.ifa.ifa_family = peer.family;
|
---|
| 642 | }
|
---|
| 643 | addattr_l(&req.n, sizeof(req), IFA_ADDRESS, &peer.data, peer.bytelen);
|
---|
| 644 | req.ifa.ifa_prefixlen = peer.bitlen;
|
---|
| 645 | break;
|
---|
| 646 | case 2: /* broadcast */
|
---|
| 647 | case 3: /* brd */
|
---|
| 648 | {
|
---|
| 649 | inet_prefix addr;
|
---|
| 650 | NEXT_ARG();
|
---|
| 651 | if (brd_len) {
|
---|
| 652 | duparg("broadcast", *argv);
|
---|
| 653 | }
|
---|
[1765] | 654 | if (LONE_CHAR(*argv, '+')) {
|
---|
[821] | 655 | brd_len = -1;
|
---|
| 656 | }
|
---|
[1765] | 657 | else if (LONE_DASH(*argv)) {
|
---|
[821] | 658 | brd_len = -2;
|
---|
| 659 | } else {
|
---|
| 660 | get_addr(&addr, *argv, req.ifa.ifa_family);
|
---|
| 661 | if (req.ifa.ifa_family == AF_UNSPEC)
|
---|
| 662 | req.ifa.ifa_family = addr.family;
|
---|
| 663 | addattr_l(&req.n, sizeof(req), IFA_BROADCAST, &addr.data, addr.bytelen);
|
---|
| 664 | brd_len = addr.bytelen;
|
---|
| 665 | }
|
---|
| 666 | break;
|
---|
| 667 | }
|
---|
| 668 | case 4: /* anycast */
|
---|
| 669 | {
|
---|
| 670 | inet_prefix addr;
|
---|
| 671 | NEXT_ARG();
|
---|
| 672 | if (any_len) {
|
---|
| 673 | duparg("anycast", *argv);
|
---|
| 674 | }
|
---|
| 675 | get_addr(&addr, *argv, req.ifa.ifa_family);
|
---|
| 676 | if (req.ifa.ifa_family == AF_UNSPEC) {
|
---|
| 677 | req.ifa.ifa_family = addr.family;
|
---|
| 678 | }
|
---|
| 679 | addattr_l(&req.n, sizeof(req), IFA_ANYCAST, &addr.data, addr.bytelen);
|
---|
| 680 | any_len = addr.bytelen;
|
---|
| 681 | break;
|
---|
| 682 | }
|
---|
| 683 | case 5: /* scope */
|
---|
| 684 | {
|
---|
| 685 | uint32_t scope = 0;
|
---|
| 686 | NEXT_ARG();
|
---|
| 687 | if (rtnl_rtscope_a2n(&scope, *argv)) {
|
---|
| 688 | invarg(*argv, "scope");
|
---|
| 689 | }
|
---|
| 690 | req.ifa.ifa_scope = scope;
|
---|
| 691 | scoped = 1;
|
---|
| 692 | break;
|
---|
| 693 | }
|
---|
| 694 | case 6: /* dev */
|
---|
| 695 | NEXT_ARG();
|
---|
| 696 | d = *argv;
|
---|
| 697 | break;
|
---|
| 698 | case 7: /* label */
|
---|
| 699 | NEXT_ARG();
|
---|
| 700 | l = *argv;
|
---|
| 701 | addattr_l(&req.n, sizeof(req), IFA_LABEL, l, strlen(l)+1);
|
---|
| 702 | break;
|
---|
| 703 | case 8: /* local */
|
---|
| 704 | NEXT_ARG();
|
---|
| 705 | default:
|
---|
| 706 | if (local_len) {
|
---|
| 707 | duparg2("local", *argv);
|
---|
| 708 | }
|
---|
| 709 | get_prefix(&lcl, *argv, req.ifa.ifa_family);
|
---|
| 710 | if (req.ifa.ifa_family == AF_UNSPEC) {
|
---|
| 711 | req.ifa.ifa_family = lcl.family;
|
---|
| 712 | }
|
---|
| 713 | addattr_l(&req.n, sizeof(req), IFA_LOCAL, &lcl.data, lcl.bytelen);
|
---|
| 714 | local_len = lcl.bytelen;
|
---|
| 715 | }
|
---|
| 716 | argc--;
|
---|
| 717 | argv++;
|
---|
| 718 | }
|
---|
| 719 |
|
---|
| 720 | if (d == NULL) {
|
---|
| 721 | bb_error_msg(bb_msg_requires_arg,"\"dev\"");
|
---|
| 722 | return -1;
|
---|
| 723 | }
|
---|
[1765] | 724 | if (l && strncmp(d, l, strlen(d)) != 0) {
|
---|
[821] | 725 | bb_error_msg_and_die("\"dev\" (%s) must match \"label\" (%s)", d, l);
|
---|
| 726 | }
|
---|
| 727 |
|
---|
| 728 | if (peer_len == 0 && local_len && cmd != RTM_DELADDR) {
|
---|
| 729 | peer = lcl;
|
---|
| 730 | addattr_l(&req.n, sizeof(req), IFA_ADDRESS, &lcl.data, lcl.bytelen);
|
---|
| 731 | }
|
---|
| 732 | if (req.ifa.ifa_prefixlen == 0)
|
---|
| 733 | req.ifa.ifa_prefixlen = lcl.bitlen;
|
---|
| 734 |
|
---|
| 735 | if (brd_len < 0 && cmd != RTM_DELADDR) {
|
---|
| 736 | inet_prefix brd;
|
---|
| 737 | int i;
|
---|
| 738 | if (req.ifa.ifa_family != AF_INET) {
|
---|
[1765] | 739 | bb_error_msg_and_die("broadcast can be set only for IPv4 addresses");
|
---|
[821] | 740 | }
|
---|
| 741 | brd = peer;
|
---|
| 742 | if (brd.bitlen <= 30) {
|
---|
| 743 | for (i=31; i>=brd.bitlen; i--) {
|
---|
| 744 | if (brd_len == -1)
|
---|
| 745 | brd.data[0] |= htonl(1<<(31-i));
|
---|
| 746 | else
|
---|
| 747 | brd.data[0] &= ~htonl(1<<(31-i));
|
---|
| 748 | }
|
---|
| 749 | addattr_l(&req.n, sizeof(req), IFA_BROADCAST, &brd.data, brd.bytelen);
|
---|
| 750 | brd_len = brd.bytelen;
|
---|
| 751 | }
|
---|
| 752 | }
|
---|
| 753 | if (!scoped && cmd != RTM_DELADDR)
|
---|
| 754 | req.ifa.ifa_scope = default_scope(&lcl);
|
---|
| 755 |
|
---|
[1765] | 756 | xrtnl_open(&rth);
|
---|
[821] | 757 |
|
---|
| 758 | ll_init_map(&rth);
|
---|
| 759 |
|
---|
[1765] | 760 | req.ifa.ifa_index = xll_name_to_index(d);
|
---|
[821] | 761 |
|
---|
| 762 | if (rtnl_talk(&rth, &req.n, 0, 0, NULL, NULL, NULL) < 0)
|
---|
[1765] | 763 | return 2;
|
---|
[821] | 764 |
|
---|
[1765] | 765 | return 0;
|
---|
[821] | 766 | }
|
---|
| 767 |
|
---|
[1765] | 768 | /* Return value becomes exitcode. It's okay to not return at all */
|
---|
[821] | 769 | int do_ipaddr(int argc, char **argv)
|
---|
| 770 | {
|
---|
[1765] | 771 | static const char commands[] ALIGN1 =
|
---|
| 772 | "add\0""delete\0""list\0""show\0""lst\0""flush\0";
|
---|
[821] | 773 |
|
---|
[1765] | 774 | int command_num = 2; /* default command is list */
|
---|
[821] | 775 |
|
---|
| 776 | if (*argv) {
|
---|
[1765] | 777 | command_num = index_in_substrings(commands, *argv);
|
---|
[821] | 778 | }
|
---|
[1765] | 779 | if (command_num < 0 || command_num > 5)
|
---|
| 780 | bb_error_msg_and_die("unknown command %s", *argv);
|
---|
| 781 | --argc;
|
---|
| 782 | ++argv;
|
---|
| 783 | if (command_num == 0) /* add */
|
---|
| 784 | return ipaddr_modify(RTM_NEWADDR, argc, argv);
|
---|
| 785 | else if (command_num == 1) /* delete */
|
---|
| 786 | return ipaddr_modify(RTM_DELADDR, argc, argv);
|
---|
| 787 | else if (command_num == 5) /* flush */
|
---|
| 788 | return ipaddr_list_or_flush(argc, argv, 1);
|
---|
| 789 | else /* 2 == list, 3 == show, 4 == lst */
|
---|
| 790 | return ipaddr_list_or_flush(argc, argv, 0);
|
---|
[821] | 791 | }
|
---|