| /* vi: set sw=4 ts=4: */ |
| /* |
| * ipaddress.c "ip address". |
| * |
| * Licensed under GPLv2 or later, see file LICENSE in this tarball for details. |
| * |
| * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru> |
| * |
| * Changes: |
| * Laszlo Valko <valko@linux.karinthy.hu> 990223: address label must be zero terminated |
| */ |
| |
| #include "libbb.h" |
| #include <sys/socket.h> |
| #include <sys/ioctl.h> |
| |
| #include <fnmatch.h> |
| #include <string.h> |
| #include <unistd.h> |
| |
| #include <net/if.h> |
| #include <net/if_arp.h> |
| |
| #include "rt_names.h" |
| #include "utils.h" |
| #include "ip_common.h" |
| |
| |
| static struct |
| { |
| int ifindex; |
| int family; |
| int oneline; |
| int showqueue; |
| inet_prefix pfx; |
| int scope, scopemask; |
| int flags, flagmask; |
| int up; |
| char *label; |
| int flushed; |
| char *flushb; |
| int flushp; |
| int flushe; |
| struct rtnl_handle *rth; |
| } filter; |
| |
| static void print_link_flags(FILE *fp, unsigned flags, unsigned mdown) |
| { |
| fprintf(fp, "<"); |
| flags &= ~IFF_RUNNING; |
| #define _PF(f) if (flags&IFF_##f) { \ |
| flags &= ~IFF_##f ; \ |
| fprintf(fp, #f "%s", flags ? "," : ""); } |
| _PF(LOOPBACK); |
| _PF(BROADCAST); |
| _PF(POINTOPOINT); |
| _PF(MULTICAST); |
| _PF(NOARP); |
| #if 0 |
| _PF(ALLMULTI); |
| _PF(PROMISC); |
| _PF(MASTER); |
| _PF(SLAVE); |
| _PF(DEBUG); |
| _PF(DYNAMIC); |
| _PF(AUTOMEDIA); |
| _PF(PORTSEL); |
| _PF(NOTRAILERS); |
| #endif |
| _PF(UP); |
| #undef _PF |
| if (flags) |
| fprintf(fp, "%x", flags); |
| if (mdown) |
| fprintf(fp, ",M-DOWN"); |
| fprintf(fp, "> "); |
| } |
| |
| static void print_queuelen(char *name) |
| { |
| struct ifreq ifr; |
| int s; |
| |
| s = socket(AF_INET, SOCK_STREAM, 0); |
| if (s < 0) |
| return; |
| |
| memset(&ifr, 0, sizeof(ifr)); |
| strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name)); |
| if (ioctl(s, SIOCGIFTXQLEN, &ifr) < 0) { |
| perror("SIOCGIFXQLEN"); |
| close(s); |
| return; |
| } |
| close(s); |
| |
| if (ifr.ifr_qlen) |
| printf("qlen %d", ifr.ifr_qlen); |
| } |
| |
| static int print_linkinfo(struct sockaddr_nl ATTRIBUTE_UNUSED *who, |
| const struct nlmsghdr *n, void ATTRIBUTE_UNUSED *arg) |
| { |
| FILE *fp = (FILE*)arg; |
| struct ifinfomsg *ifi = NLMSG_DATA(n); |
| struct rtattr * tb[IFLA_MAX+1]; |
| int len = n->nlmsg_len; |
| unsigned m_flag = 0; |
| |
| if (n->nlmsg_type != RTM_NEWLINK && n->nlmsg_type != RTM_DELLINK) |
| return 0; |
| |
| len -= NLMSG_LENGTH(sizeof(*ifi)); |
| if (len < 0) |
| return -1; |
| |
| if (filter.ifindex && ifi->ifi_index != filter.ifindex) |
| return 0; |
| if (filter.up && !(ifi->ifi_flags&IFF_UP)) |
| return 0; |
| |
| memset(tb, 0, sizeof(tb)); |
| parse_rtattr(tb, IFLA_MAX, IFLA_RTA(ifi), len); |
| if (tb[IFLA_IFNAME] == NULL) { |
| bb_error_msg("nil ifname"); |
| return -1; |
| } |
| if (filter.label && |
| (!filter.family || filter.family == AF_PACKET) && |
| fnmatch(filter.label, RTA_DATA(tb[IFLA_IFNAME]), 0)) |
| return 0; |
| |
| if (n->nlmsg_type == RTM_DELLINK) |
| fprintf(fp, "Deleted "); |
| |
| fprintf(fp, "%d: %s", ifi->ifi_index, |
| tb[IFLA_IFNAME] ? (char*)RTA_DATA(tb[IFLA_IFNAME]) : "<nil>"); |
| |
| if (tb[IFLA_LINK]) { |
| SPRINT_BUF(b1); |
| int iflink = *(int*)RTA_DATA(tb[IFLA_LINK]); |
| if (iflink == 0) |
| fprintf(fp, "@NONE: "); |
| else { |
| fprintf(fp, "@%s: ", ll_idx_n2a(iflink, b1)); |
| m_flag = ll_index_to_flags(iflink); |
| m_flag = !(m_flag & IFF_UP); |
| } |
| } else { |
| fprintf(fp, ": "); |
| } |
| print_link_flags(fp, ifi->ifi_flags, m_flag); |
| |
| if (tb[IFLA_MTU]) |
| fprintf(fp, "mtu %u ", *(int*)RTA_DATA(tb[IFLA_MTU])); |
| if (tb[IFLA_QDISC]) |
| fprintf(fp, "qdisc %s ", (char*)RTA_DATA(tb[IFLA_QDISC])); |
| #ifdef IFLA_MASTER |
| if (tb[IFLA_MASTER]) { |
| SPRINT_BUF(b1); |
| fprintf(fp, "master %s ", ll_idx_n2a(*(int*)RTA_DATA(tb[IFLA_MASTER]), b1)); |
| } |
| #endif |
| if (filter.showqueue) |
| print_queuelen((char*)RTA_DATA(tb[IFLA_IFNAME])); |
| |
| if (!filter.family || filter.family == AF_PACKET) { |
| SPRINT_BUF(b1); |
| fprintf(fp, "%s", _SL_); |
| fprintf(fp, " link/%s ", ll_type_n2a(ifi->ifi_type, b1, sizeof(b1))); |
| |
| if (tb[IFLA_ADDRESS]) { |
| fprintf(fp, "%s", ll_addr_n2a(RTA_DATA(tb[IFLA_ADDRESS]), |
| RTA_PAYLOAD(tb[IFLA_ADDRESS]), |
| ifi->ifi_type, |
| b1, sizeof(b1))); |
| } |
| if (tb[IFLA_BROADCAST]) { |
| if (ifi->ifi_flags&IFF_POINTOPOINT) |
| fprintf(fp, " peer "); |
| else |
| fprintf(fp, " brd "); |
| fprintf(fp, "%s", ll_addr_n2a(RTA_DATA(tb[IFLA_BROADCAST]), |
| RTA_PAYLOAD(tb[IFLA_BROADCAST]), |
| ifi->ifi_type, |
| b1, sizeof(b1))); |
| } |
| } |
| fprintf(fp, "\n"); |
| fflush(fp); |
| return 0; |
| } |
| |
| static int flush_update(void) |
| { |
| if (rtnl_send(filter.rth, filter.flushb, filter.flushp) < 0) { |
| perror("Failed to send flush request\n"); |
| return -1; |
| } |
| filter.flushp = 0; |
| return 0; |
| } |
| |
| static int print_addrinfo(struct sockaddr_nl ATTRIBUTE_UNUSED *who, |
| struct nlmsghdr *n, void ATTRIBUTE_UNUSED *arg) |
| { |
| FILE *fp = (FILE*)arg; |
| struct ifaddrmsg *ifa = NLMSG_DATA(n); |
| int len = n->nlmsg_len; |
| struct rtattr * rta_tb[IFA_MAX+1]; |
| char abuf[256]; |
| SPRINT_BUF(b1); |
| |
| if (n->nlmsg_type != RTM_NEWADDR && n->nlmsg_type != RTM_DELADDR) |
| return 0; |
| len -= NLMSG_LENGTH(sizeof(*ifa)); |
| if (len < 0) { |
| bb_error_msg("wrong nlmsg len %d", len); |
| return -1; |
| } |
| |
| if (filter.flushb && n->nlmsg_type != RTM_NEWADDR) |
| return 0; |
| |
| memset(rta_tb, 0, sizeof(rta_tb)); |
| parse_rtattr(rta_tb, IFA_MAX, IFA_RTA(ifa), n->nlmsg_len - NLMSG_LENGTH(sizeof(*ifa))); |
| |
| if (!rta_tb[IFA_LOCAL]) |
| rta_tb[IFA_LOCAL] = rta_tb[IFA_ADDRESS]; |
| if (!rta_tb[IFA_ADDRESS]) |
| rta_tb[IFA_ADDRESS] = rta_tb[IFA_LOCAL]; |
| |
| if (filter.ifindex && filter.ifindex != ifa->ifa_index) |
| return 0; |
| if ((filter.scope^ifa->ifa_scope)&filter.scopemask) |
| return 0; |
| if ((filter.flags^ifa->ifa_flags)&filter.flagmask) |
| return 0; |
| if (filter.label) { |
| const char *label; |
| if (rta_tb[IFA_LABEL]) |
| label = RTA_DATA(rta_tb[IFA_LABEL]); |
| else |
| label = ll_idx_n2a(ifa->ifa_index, b1); |
| if (fnmatch(filter.label, label, 0) != 0) |
| return 0; |
| } |
| if (filter.pfx.family) { |
| if (rta_tb[IFA_LOCAL]) { |
| inet_prefix dst; |
| memset(&dst, 0, sizeof(dst)); |
| dst.family = ifa->ifa_family; |
| memcpy(&dst.data, RTA_DATA(rta_tb[IFA_LOCAL]), RTA_PAYLOAD(rta_tb[IFA_LOCAL])); |
| if (inet_addr_match(&dst, &filter.pfx, filter.pfx.bitlen)) |
| return 0; |
| } |
| } |
| |
| if (filter.flushb) { |
| struct nlmsghdr *fn; |
| if (NLMSG_ALIGN(filter.flushp) + n->nlmsg_len > filter.flushe) { |
| if (flush_update()) |
| return -1; |
| } |
| fn = (struct nlmsghdr*)(filter.flushb + NLMSG_ALIGN(filter.flushp)); |
| memcpy(fn, n, n->nlmsg_len); |
| fn->nlmsg_type = RTM_DELADDR; |
| fn->nlmsg_flags = NLM_F_REQUEST; |
| fn->nlmsg_seq = ++filter.rth->seq; |
| filter.flushp = (((char*)fn) + n->nlmsg_len) - filter.flushb; |
| filter.flushed++; |
| return 0; |
| } |
| |
| if (n->nlmsg_type == RTM_DELADDR) |
| fprintf(fp, "Deleted "); |
| |
| if (filter.oneline) |
| fprintf(fp, "%u: %s", ifa->ifa_index, ll_index_to_name(ifa->ifa_index)); |
| if (ifa->ifa_family == AF_INET) |
| fprintf(fp, " inet "); |
| else if (ifa->ifa_family == AF_INET6) |
| fprintf(fp, " inet6 "); |
| else |
| fprintf(fp, " family %d ", ifa->ifa_family); |
| |
| if (rta_tb[IFA_LOCAL]) { |
| fprintf(fp, "%s", rt_addr_n2a(ifa->ifa_family, |
| RTA_PAYLOAD(rta_tb[IFA_LOCAL]), |
| RTA_DATA(rta_tb[IFA_LOCAL]), |
| abuf, sizeof(abuf))); |
| |
| if (rta_tb[IFA_ADDRESS] == NULL || |
| memcmp(RTA_DATA(rta_tb[IFA_ADDRESS]), RTA_DATA(rta_tb[IFA_LOCAL]), 4) == 0) { |
| fprintf(fp, "/%d ", ifa->ifa_prefixlen); |
| } else { |
| fprintf(fp, " peer %s/%d ", |
| rt_addr_n2a(ifa->ifa_family, |
| RTA_PAYLOAD(rta_tb[IFA_ADDRESS]), |
| RTA_DATA(rta_tb[IFA_ADDRESS]), |
| abuf, sizeof(abuf)), |
| ifa->ifa_prefixlen); |
| } |
| } |
| |
| if (rta_tb[IFA_BROADCAST]) { |
| fprintf(fp, "brd %s ", |
| rt_addr_n2a(ifa->ifa_family, |
| RTA_PAYLOAD(rta_tb[IFA_BROADCAST]), |
| RTA_DATA(rta_tb[IFA_BROADCAST]), |
| abuf, sizeof(abuf))); |
| } |
| if (rta_tb[IFA_ANYCAST]) { |
| fprintf(fp, "any %s ", |
| rt_addr_n2a(ifa->ifa_family, |
| RTA_PAYLOAD(rta_tb[IFA_ANYCAST]), |
| RTA_DATA(rta_tb[IFA_ANYCAST]), |
| abuf, sizeof(abuf))); |
| } |
| fprintf(fp, "scope %s ", rtnl_rtscope_n2a(ifa->ifa_scope, b1, sizeof(b1))); |
| if (ifa->ifa_flags&IFA_F_SECONDARY) { |
| ifa->ifa_flags &= ~IFA_F_SECONDARY; |
| fprintf(fp, "secondary "); |
| } |
| if (ifa->ifa_flags&IFA_F_TENTATIVE) { |
| ifa->ifa_flags &= ~IFA_F_TENTATIVE; |
| fprintf(fp, "tentative "); |
| } |
| if (ifa->ifa_flags&IFA_F_DEPRECATED) { |
| ifa->ifa_flags &= ~IFA_F_DEPRECATED; |
| fprintf(fp, "deprecated "); |
| } |
| if (!(ifa->ifa_flags&IFA_F_PERMANENT)) { |
| fprintf(fp, "dynamic "); |
| } else |
| ifa->ifa_flags &= ~IFA_F_PERMANENT; |
| if (ifa->ifa_flags) |
| fprintf(fp, "flags %02x ", ifa->ifa_flags); |
| if (rta_tb[IFA_LABEL]) |
| fprintf(fp, "%s", (char*)RTA_DATA(rta_tb[IFA_LABEL])); |
| if (rta_tb[IFA_CACHEINFO]) { |
| struct ifa_cacheinfo *ci = RTA_DATA(rta_tb[IFA_CACHEINFO]); |
| char buf[128]; |
| fprintf(fp, "%s", _SL_); |
| if (ci->ifa_valid == 0xFFFFFFFFU) |
| sprintf(buf, "valid_lft forever"); |
| else |
| sprintf(buf, "valid_lft %dsec", ci->ifa_valid); |
| if (ci->ifa_prefered == 0xFFFFFFFFU) |
| sprintf(buf+strlen(buf), " preferred_lft forever"); |
| else |
| sprintf(buf+strlen(buf), " preferred_lft %dsec", ci->ifa_prefered); |
| fprintf(fp, " %s", buf); |
| } |
| fprintf(fp, "\n"); |
| fflush(fp); |
| return 0; |
| } |
| |
| |
| struct nlmsg_list |
| { |
| struct nlmsg_list *next; |
| struct nlmsghdr h; |
| }; |
| |
| static int print_selected_addrinfo(int ifindex, struct nlmsg_list *ainfo, FILE *fp) |
| { |
| for ( ;ainfo ; ainfo = ainfo->next) { |
| struct nlmsghdr *n = &ainfo->h; |
| struct ifaddrmsg *ifa = NLMSG_DATA(n); |
| |
| if (n->nlmsg_type != RTM_NEWADDR) |
| continue; |
| |
| if (n->nlmsg_len < NLMSG_LENGTH(sizeof(ifa))) |
| return -1; |
| |
| if (ifa->ifa_index != ifindex || |
| (filter.family && filter.family != ifa->ifa_family)) |
| continue; |
| |
| print_addrinfo(NULL, n, fp); |
| } |
| return 0; |
| } |
| |
| |
| static int store_nlmsg(struct sockaddr_nl *who, struct nlmsghdr *n, void *arg) |
| { |
| struct nlmsg_list **linfo = (struct nlmsg_list**)arg; |
| struct nlmsg_list *h; |
| struct nlmsg_list **lp; |
| |
| h = malloc(n->nlmsg_len+sizeof(void*)); |
| if (h == NULL) |
| return -1; |
| |
| memcpy(&h->h, n, n->nlmsg_len); |
| h->next = NULL; |
| |
| for (lp = linfo; *lp; lp = &(*lp)->next) /* NOTHING */; |
| *lp = h; |
| |
| ll_remember_index(who, n, NULL); |
| return 0; |
| } |
| |
| static void ipaddr_reset_filter(int _oneline) |
| { |
| memset(&filter, 0, sizeof(filter)); |
| filter.oneline = _oneline; |
| } |
| |
| int ipaddr_list_or_flush(int argc, char **argv, int flush) |
| { |
| static const char *const option[] = { "to", "scope", "up", "label", "dev", 0 }; |
| |
| struct nlmsg_list *linfo = NULL; |
| struct nlmsg_list *ainfo = NULL; |
| struct nlmsg_list *l; |
| struct rtnl_handle rth; |
| char *filter_dev = NULL; |
| int no_link = 0; |
| |
| ipaddr_reset_filter(oneline); |
| filter.showqueue = 1; |
| |
| if (filter.family == AF_UNSPEC) |
| filter.family = preferred_family; |
| |
| if (flush) { |
| if (argc <= 0) { |
| bb_error_msg(bb_msg_requires_arg, "flush"); |
| return -1; |
| } |
| if (filter.family == AF_PACKET) { |
| bb_error_msg("cannot flush link addresses"); |
| return -1; |
| } |
| } |
| |
| while (argc > 0) { |
| const int option_num = index_in_str_array(option, *argv); |
| switch (option_num) { |
| case 0: /* to */ |
| NEXT_ARG(); |
| get_prefix(&filter.pfx, *argv, filter.family); |
| if (filter.family == AF_UNSPEC) { |
| filter.family = filter.pfx.family; |
| } |
| break; |
| case 1: /* scope */ |
| { |
| uint32_t scope = 0; |
| NEXT_ARG(); |
| filter.scopemask = -1; |
| if (rtnl_rtscope_a2n(&scope, *argv)) { |
| if (strcmp(*argv, "all") != 0) { |
| invarg(*argv, "scope"); |
| } |
| scope = RT_SCOPE_NOWHERE; |
| filter.scopemask = 0; |
| } |
| filter.scope = scope; |
| break; |
| } |
| case 2: /* up */ |
| filter.up = 1; |
| break; |
| case 3: /* label */ |
| NEXT_ARG(); |
| filter.label = *argv; |
| break; |
| case 4: /* dev */ |
| NEXT_ARG(); |
| default: |
| if (filter_dev) { |
| duparg2("dev", *argv); |
| } |
| filter_dev = *argv; |
| } |
| argv++; |
| argc--; |
| } |
| |
| if (rtnl_open(&rth, 0) < 0) |
| exit(1); |
| |
| if (rtnl_wilddump_request(&rth, preferred_family, RTM_GETLINK) < 0) { |
| bb_perror_msg_and_die("cannot send dump request"); |
| } |
| |
| if (rtnl_dump_filter(&rth, store_nlmsg, &linfo, NULL, NULL) < 0) { |
| bb_error_msg_and_die("dump terminated"); |
| } |
| |
| if (filter_dev) { |
| filter.ifindex = ll_name_to_index(filter_dev); |
| if (filter.ifindex <= 0) { |
| bb_error_msg("device \"%s\" does not exist", filter_dev); |
| return -1; |
| } |
| } |
| |
| if (flush) { |
| char flushb[4096-512]; |
| |
| filter.flushb = flushb; |
| filter.flushp = 0; |
| filter.flushe = sizeof(flushb); |
| filter.rth = &rth; |
| |
| for (;;) { |
| if (rtnl_wilddump_request(&rth, filter.family, RTM_GETADDR) < 0) { |
| perror("Cannot send dump request"); |
| exit(1); |
| } |
| filter.flushed = 0; |
| if (rtnl_dump_filter(&rth, print_addrinfo, stdout, NULL, NULL) < 0) { |
| fprintf(stderr, "Flush terminated\n"); |
| exit(1); |
| } |
| if (filter.flushed == 0) { |
| fflush(stdout); |
| return 0; |
| } |
| if (flush_update() < 0) |
| exit(1); |
| } |
| } |
| |
| if (filter.family != AF_PACKET) { |
| if (rtnl_wilddump_request(&rth, filter.family, RTM_GETADDR) < 0) { |
| bb_perror_msg_and_die("cannot send dump request"); |
| } |
| |
| if (rtnl_dump_filter(&rth, store_nlmsg, &ainfo, NULL, NULL) < 0) { |
| bb_error_msg_and_die("dump terminated"); |
| } |
| } |
| |
| |
| if (filter.family && filter.family != AF_PACKET) { |
| struct nlmsg_list **lp; |
| lp=&linfo; |
| |
| if (filter.oneline) |
| no_link = 1; |
| |
| while ((l=*lp)!=NULL) { |
| int ok = 0; |
| struct ifinfomsg *ifi = NLMSG_DATA(&l->h); |
| struct nlmsg_list *a; |
| |
| for (a=ainfo; a; a=a->next) { |
| struct nlmsghdr *n = &a->h; |
| struct ifaddrmsg *ifa = NLMSG_DATA(n); |
| |
| if (ifa->ifa_index != ifi->ifi_index || |
| (filter.family && filter.family != ifa->ifa_family)) |
| continue; |
| if ((filter.scope^ifa->ifa_scope)&filter.scopemask) |
| continue; |
| if ((filter.flags^ifa->ifa_flags)&filter.flagmask) |
| continue; |
| if (filter.pfx.family || filter.label) { |
| struct rtattr *tb[IFA_MAX+1]; |
| memset(tb, 0, sizeof(tb)); |
| parse_rtattr(tb, IFA_MAX, IFA_RTA(ifa), IFA_PAYLOAD(n)); |
| if (!tb[IFA_LOCAL]) |
| tb[IFA_LOCAL] = tb[IFA_ADDRESS]; |
| |
| if (filter.pfx.family && tb[IFA_LOCAL]) { |
| inet_prefix dst; |
| memset(&dst, 0, sizeof(dst)); |
| dst.family = ifa->ifa_family; |
| memcpy(&dst.data, RTA_DATA(tb[IFA_LOCAL]), RTA_PAYLOAD(tb[IFA_LOCAL])); |
| if (inet_addr_match(&dst, &filter.pfx, filter.pfx.bitlen)) |
| continue; |
| } |
| if (filter.label) { |
| SPRINT_BUF(b1); |
| const char *label; |
| if (tb[IFA_LABEL]) |
| label = RTA_DATA(tb[IFA_LABEL]); |
| else |
| label = ll_idx_n2a(ifa->ifa_index, b1); |
| if (fnmatch(filter.label, label, 0) != 0) |
| continue; |
| } |
| } |
| |
| ok = 1; |
| break; |
| } |
| if (!ok) |
| *lp = l->next; |
| else |
| lp = &l->next; |
| } |
| } |
| |
| for (l=linfo; l; l = l->next) { |
| if (no_link || print_linkinfo(NULL, &l->h, stdout) == 0) { |
| struct ifinfomsg *ifi = NLMSG_DATA(&l->h); |
| if (filter.family != AF_PACKET) |
| print_selected_addrinfo(ifi->ifi_index, ainfo, stdout); |
| } |
| fflush(stdout); |
| } |
| |
| exit(0); |
| } |
| |
| static int default_scope(inet_prefix *lcl) |
| { |
| if (lcl->family == AF_INET) { |
| if (lcl->bytelen >= 1 && *(__u8*)&lcl->data == 127) |
| return RT_SCOPE_HOST; |
| } |
| return 0; |
| } |
| |
| static int ipaddr_modify(int cmd, int argc, char **argv) |
| { |
| static const char *const option[] = { |
| "peer", "remote", "broadcast", "brd", |
| "anycast", "scope", "dev", "label", "local", 0 |
| }; |
| |
| struct rtnl_handle rth; |
| struct { |
| struct nlmsghdr n; |
| struct ifaddrmsg ifa; |
| char buf[256]; |
| } req; |
| char *d = NULL; |
| char *l = NULL; |
| inet_prefix lcl; |
| inet_prefix peer; |
| int local_len = 0; |
| int peer_len = 0; |
| int brd_len = 0; |
| int any_len = 0; |
| int scoped = 0; |
| |
| memset(&req, 0, sizeof(req)); |
| |
| req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifaddrmsg)); |
| req.n.nlmsg_flags = NLM_F_REQUEST; |
| req.n.nlmsg_type = cmd; |
| req.ifa.ifa_family = preferred_family; |
| |
| while (argc > 0) { |
| const int option_num = index_in_str_array(option, *argv); |
| switch (option_num) { |
| case 0: /* peer */ |
| case 1: /* remote */ |
| NEXT_ARG(); |
| |
| if (peer_len) { |
| duparg("peer", *argv); |
| } |
| get_prefix(&peer, *argv, req.ifa.ifa_family); |
| peer_len = peer.bytelen; |
| if (req.ifa.ifa_family == AF_UNSPEC) { |
| req.ifa.ifa_family = peer.family; |
| } |
| addattr_l(&req.n, sizeof(req), IFA_ADDRESS, &peer.data, peer.bytelen); |
| req.ifa.ifa_prefixlen = peer.bitlen; |
| break; |
| case 2: /* broadcast */ |
| case 3: /* brd */ |
| { |
| inet_prefix addr; |
| NEXT_ARG(); |
| if (brd_len) { |
| duparg("broadcast", *argv); |
| } |
| if (strcmp(*argv, "+") == 0) { |
| brd_len = -1; |
| } |
| else if (strcmp(*argv, "-") == 0) { |
| brd_len = -2; |
| } else { |
| get_addr(&addr, *argv, req.ifa.ifa_family); |
| if (req.ifa.ifa_family == AF_UNSPEC) |
| req.ifa.ifa_family = addr.family; |
| addattr_l(&req.n, sizeof(req), IFA_BROADCAST, &addr.data, addr.bytelen); |
| brd_len = addr.bytelen; |
| } |
| break; |
| } |
| case 4: /* anycast */ |
| { |
| inet_prefix addr; |
| NEXT_ARG(); |
| if (any_len) { |
| duparg("anycast", *argv); |
| } |
| get_addr(&addr, *argv, req.ifa.ifa_family); |
| if (req.ifa.ifa_family == AF_UNSPEC) { |
| req.ifa.ifa_family = addr.family; |
| } |
| addattr_l(&req.n, sizeof(req), IFA_ANYCAST, &addr.data, addr.bytelen); |
| any_len = addr.bytelen; |
| break; |
| } |
| case 5: /* scope */ |
| { |
| uint32_t scope = 0; |
| NEXT_ARG(); |
| if (rtnl_rtscope_a2n(&scope, *argv)) { |
| invarg(*argv, "scope"); |
| } |
| req.ifa.ifa_scope = scope; |
| scoped = 1; |
| break; |
| } |
| case 6: /* dev */ |
| NEXT_ARG(); |
| d = *argv; |
| break; |
| case 7: /* label */ |
| NEXT_ARG(); |
| l = *argv; |
| addattr_l(&req.n, sizeof(req), IFA_LABEL, l, strlen(l)+1); |
| break; |
| case 8: /* local */ |
| NEXT_ARG(); |
| default: |
| if (local_len) { |
| duparg2("local", *argv); |
| } |
| get_prefix(&lcl, *argv, req.ifa.ifa_family); |
| if (req.ifa.ifa_family == AF_UNSPEC) { |
| req.ifa.ifa_family = lcl.family; |
| } |
| addattr_l(&req.n, sizeof(req), IFA_LOCAL, &lcl.data, lcl.bytelen); |
| local_len = lcl.bytelen; |
| } |
| argc--; |
| argv++; |
| } |
| |
| if (d == NULL) { |
| bb_error_msg(bb_msg_requires_arg,"\"dev\""); |
| return -1; |
| } |
| if (l && matches(d, l) != 0) { |
| bb_error_msg_and_die("\"dev\" (%s) must match \"label\" (%s)", d, l); |
| } |
| |
| if (peer_len == 0 && local_len && cmd != RTM_DELADDR) { |
| peer = lcl; |
| addattr_l(&req.n, sizeof(req), IFA_ADDRESS, &lcl.data, lcl.bytelen); |
| } |
| if (req.ifa.ifa_prefixlen == 0) |
| req.ifa.ifa_prefixlen = lcl.bitlen; |
| |
| if (brd_len < 0 && cmd != RTM_DELADDR) { |
| inet_prefix brd; |
| int i; |
| if (req.ifa.ifa_family != AF_INET) { |
| bb_error_msg("broadcast can be set only for IPv4 addresses"); |
| return -1; |
| } |
| brd = peer; |
| if (brd.bitlen <= 30) { |
| for (i=31; i>=brd.bitlen; i--) { |
| if (brd_len == -1) |
| brd.data[0] |= htonl(1<<(31-i)); |
| else |
| brd.data[0] &= ~htonl(1<<(31-i)); |
| } |
| addattr_l(&req.n, sizeof(req), IFA_BROADCAST, &brd.data, brd.bytelen); |
| brd_len = brd.bytelen; |
| } |
| } |
| if (!scoped && cmd != RTM_DELADDR) |
| req.ifa.ifa_scope = default_scope(&lcl); |
| |
| if (rtnl_open(&rth, 0) < 0) |
| exit(1); |
| |
| ll_init_map(&rth); |
| |
| if ((req.ifa.ifa_index = ll_name_to_index(d)) == 0) { |
| bb_error_msg("cannot find device \"%s\"", d); |
| return -1; |
| } |
| |
| if (rtnl_talk(&rth, &req.n, 0, 0, NULL, NULL, NULL) < 0) |
| exit(2); |
| |
| exit(0); |
| } |
| |
| int do_ipaddr(int argc, char **argv) |
| { |
| static const char *const commands[] = { |
| "add", "delete", "list", "show", "lst", "flush", 0 |
| }; |
| |
| int command_num = 2; |
| |
| if (*argv) { |
| command_num = index_in_substr_array(commands, *argv); |
| } |
| switch (command_num) { |
| case 0: /* add */ |
| return ipaddr_modify(RTM_NEWADDR, argc-1, argv+1); |
| case 1: /* delete */ |
| return ipaddr_modify(RTM_DELADDR, argc-1, argv+1); |
| case 2: /* list */ |
| case 3: /* show */ |
| case 4: /* lst */ |
| return ipaddr_list_or_flush(argc-1, argv+1, 0); |
| case 5: /* flush */ |
| return ipaddr_list_or_flush(argc-1, argv+1, 1); |
| } |
| bb_error_msg_and_die("unknown command %s", *argv); |
| } |