diff options
Diffstat (limited to 'sysdep/unix/krt-iface.c')
| -rw-r--r-- | sysdep/unix/krt-iface.c | 228 |
1 files changed, 0 insertions, 228 deletions
diff --git a/sysdep/unix/krt-iface.c b/sysdep/unix/krt-iface.c deleted file mode 100644 index 88c17ecd..00000000 --- a/sysdep/unix/krt-iface.c +++ /dev/null @@ -1,228 +0,0 @@ -/* - * BIRD -- Unix Interface Scanning and Syncing - * - * (c) 1998--2000 Martin Mares <mj@ucw.cz> - * (c) 2004 Ondrej Filip <feela@network.cz> - * - * Can be freely distributed and used under the terms of the GNU GPL. - */ - -#include <sys/types.h> -#include <sys/socket.h> -#include <netinet/in.h> -#include <net/if.h> -#include <sys/ioctl.h> -#include <errno.h> - -#undef LOCAL_DEBUG - -#include "nest/bird.h" -#include "nest/iface.h" -#include "nest/route.h" -#include "nest/protocol.h" -#include "lib/timer.h" -#include "lib/krt.h" -#include "lib/string.h" - -#include "unix.h" - -int if_scan_sock = -1; - -static void -scan_ifs(struct ifreq *r, int cnt) -{ - struct iface i, *pi; - struct ifa a; - char *err, *colon; - unsigned fl; - ip_addr netmask; - int l, scope; - sockaddr *sa; - - if_start_update(); - for (cnt /= sizeof(struct ifreq); cnt; cnt--, r++) - { - int sec = 0; - bzero(&i, sizeof(i)); - bzero(&a, sizeof(a)); - if (colon = strchr(r->ifr_name, ':')) - { - /* It's an alias -- let's interpret it as a secondary interface address */ - sec = 1; - *colon = 0; - } - strncpy(i.name, r->ifr_name, sizeof(i.name) - 1); - - if(ioctl(if_scan_sock, SIOCGIFADDR,r)<0) continue; - - get_sockaddr((struct sockaddr_in *) &r->ifr_addr, &a.ip, NULL, 1); - if (ipa_nonzero(a.ip)) - { - l = ipa_classify(a.ip); - if (l < 0 || !(l & IADDR_HOST)) - { - log(L_ERR "%s: Invalid interface address", i.name); - a.ip = IPA_NONE; - } - else - { - a.scope = l & IADDR_SCOPE_MASK; - if (a.scope == SCOPE_HOST) - i.flags |= IF_LOOPBACK | IF_IGNORE; - } - } - - if (ioctl(if_scan_sock, SIOCGIFFLAGS, r) < 0) - { - err = "SIOCGIFFLAGS"; - faulty: - log(L_ERR "%s(%s): %m", err, i.name); - bad: - i.flags = (i.flags & ~IF_ADMIN_UP) | IF_SHUTDOWN; - continue; - } - fl = r->ifr_flags; - if (fl & IFF_UP) - i.flags |= IF_ADMIN_UP; - - if (ioctl(if_scan_sock, SIOCGIFNETMASK, r) < 0) - { err = "SIOCGIFNETMASK"; goto faulty; } - get_sockaddr((struct sockaddr_in *) &r->ifr_addr, &netmask, NULL, 0); - l = ipa_mklen(netmask); - if (l < 0) - { - log(L_ERR "%s: Invalid netmask (%x)", i.name, netmask); - goto bad; - } - a.pxlen = l; - - if (fl & IFF_POINTOPOINT) - { - a.flags |= IA_PEER; - if (ioctl(if_scan_sock, SIOCGIFDSTADDR, r) < 0) - { err = "SIOCGIFDSTADDR"; goto faulty; } - get_sockaddr((struct sockaddr_in *) &r->ifr_addr, &a.opposite, NULL, 1); - a.prefix = a.opposite; - a.pxlen = BITS_PER_IP_ADDRESS; - } - else - a.prefix = ipa_and(a.ip, ipa_mkmask(a.pxlen)); - if (fl & IFF_LOOPBACK) - i.flags |= IF_LOOPBACK | IF_IGNORE; - if (1 -#ifndef CONFIG_ALL_MULTICAST - && (fl & IFF_MULTICAST) -#endif -#ifndef CONFIG_UNNUM_MULTICAST - && !(a.flags & IA_PEER) -#endif - ) - i.flags |= IF_MULTICAST; - - scope = ipa_classify(a.ip); - if (scope < 0) - { - log(L_ERR "%s: Invalid address", i.name); - goto bad; - } - a.scope = scope & IADDR_SCOPE_MASK; - - if (a.pxlen < 32) - { - a.brd = ipa_or(a.prefix, ipa_not(ipa_mkmask(a.pxlen))); - if (ipa_equal(a.ip, a.prefix) || ipa_equal(a.ip, a.brd)) - { - log(L_ERR "%s: Using network or broadcast address for interface", i.name); - goto bad; - } - if (fl & IFF_BROADCAST) - i.flags |= IF_BROADCAST; - if (a.pxlen < 30) - i.flags |= IF_MULTIACCESS; - if (a.pxlen == 30) - ifa.opposite = ipa_opposite_m2(ifa.ip); - if (a.pxlen == 31) - ifa.opposite = ipa_opposite_m1(ifa.ip); - } - else - a.brd = a.opposite; - a.scope = SCOPE_UNIVERSE; - - if (ioctl(if_scan_sock, SIOCGIFMTU, r) < 0) - { err = "SIOCGIFMTU"; goto faulty; } - i.mtu = r->ifr_mtu; - -#ifdef SIOCGIFINDEX - if (ioctl(if_scan_sock, SIOCGIFINDEX, r) >= 0) - i.index = r->ifr_ifindex; - else if (errno != EINVAL) - DBG("SIOCGIFINDEX failed: %m\n"); - else /* defined, but not supported by the kernel */ -#endif - /* - * The kernel doesn't give us real ifindices, but we still need them - * at least for OSPF unnumbered links. So let's make them up ourselves. - */ - if (pi = if_find_by_name(i.name)) - i.index = pi->index; - else - { - static int if_index_counter = 1; - i.index = if_index_counter++; - } - - pi = NULL; - if (sec) - { - a.flags |= IA_SECONDARY; - pi = if_find_by_index(i.index); - } - if (!pi) - pi = if_update(&i); - a.iface = pi; - ifa_update(&a); - } - if_end_update(); -} - -void -kif_do_scan(struct kif_proto *p) -{ - struct ifconf ic; - static int last_ifbuf_size = 4*sizeof(struct ifreq); - int res; - - for(;;) - { - ic.ifc_buf = alloca(last_ifbuf_size); - ic.ifc_len = last_ifbuf_size; - res = ioctl(if_scan_sock, SIOCGIFCONF, &ic); - if (res < 0 && errno != EFAULT) - die("SIOCCGIFCONF: %m"); - if (res >= 0 && ic.ifc_len <= last_ifbuf_size) - break; - last_ifbuf_size *= 2; - DBG("Increased ifconf buffer size to %d\n", last_ifbuf_size); - } - scan_ifs(ic.ifc_req, ic.ifc_len); -} - -void -kif_start(struct kif_proto *p) -{ -} - -void -kif_shutdown(struct kif_proto *p) -{ -} - -void -kif_io_init(void) -{ - if_scan_sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_IP); - DBG("Using socket %d for interface and route scanning\n", if_scan_sock); - if (if_scan_sock < 0) - die("Cannot create scanning socket: %m"); -} - |