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-rw-r--r--sysdep/unix/Modules1
-rw-r--r--sysdep/unix/main.c29
-rw-r--r--sysdep/unix/sync-if.c178
3 files changed, 188 insertions, 20 deletions
diff --git a/sysdep/unix/Modules b/sysdep/unix/Modules
index 95b80b3..0b5117a 100644
--- a/sysdep/unix/Modules
+++ b/sysdep/unix/Modules
@@ -3,3 +3,4 @@ main.c
timer.h
io.c
unix.h
+sync-if.c
diff --git a/sysdep/unix/main.c b/sysdep/unix/main.c
index b6b783b..293ee63 100644
--- a/sysdep/unix/main.c
+++ b/sysdep/unix/main.c
@@ -15,6 +15,7 @@
#include "lib/socket.h"
#include "nest/route.h"
#include "nest/protocol.h"
+#include "nest/iface.h"
#include "unix.h"
@@ -29,6 +30,7 @@ handle_sigusr(int sig)
sk_dump_all();
tm_dump_all();
+ if_dump_all();
rta_dump_all();
rt_dump_all();
@@ -83,29 +85,16 @@ main(void)
resource_init();
io_init();
rt_init();
+ if_init();
protos_init();
+
+ scan_if_init();
+
signal_init();
- {
- sock *s = sk_new(&root_pool);
-
- if (!s)
- die("no socket");
- s->type = SK_UDP_MC;
- s->sport = 7899;
- s->saddr = _MI(0x3ea80015);
- s->daddr = _MI(0xe0000001);
- s->dport = 7890;
- s->rx_hook = xxx;
- s->tx_hook = bla;
- s->err_hook = erro;
- s->rbsize = 1024;
- s->tbsize = 1024;
- s->ttl = 1;
- if (sk_open(s))
- die("open failed");
- bla(s);
- }
+ handle_sigusr(0);
+
+ debug("Entering I/O loop.\n");
io_loop();
die("I/O loop died");
diff --git a/sysdep/unix/sync-if.c b/sysdep/unix/sync-if.c
new file mode 100644
index 0000000..742421f
--- /dev/null
+++ b/sysdep/unix/sync-if.c
@@ -0,0 +1,178 @@
+/*
+ * BIRD -- Unix Interface Scanning and Syncing
+ *
+ * (c) 1998 Martin Mares <mj@ucw.cz>
+ *
+ * Can be freely distributed and used under the terms of the GNU GPL.
+ */
+
+#include <string.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <net/if.h>
+#include <sys/ioctl.h>
+#include <errno.h>
+
+#define LOCAL_DEBUG
+
+#include "nest/bird.h"
+#include "nest/iface.h"
+#include "lib/timer.h"
+
+#include "unix.h"
+
+int if_scan_sock;
+int if_scan_period = 60;
+
+static timer *if_scan_timer;
+
+static void
+scan_ifs(struct ifreq *r, int cnt)
+{
+ struct iface i;
+ struct ifa a;
+ char *err;
+ unsigned fl;
+ ip_addr netmask;
+ int l;
+
+ for (cnt /= sizeof(struct ifreq); cnt; cnt--, r++)
+ {
+ bzero(&i, sizeof(i));
+ bzero(&a, sizeof(a));
+ debug("%s\n", r->ifr_ifrn.ifrn_name);
+ strncpy(i.name, r->ifr_ifrn.ifrn_name, sizeof(i.name) - 1);
+ i.name[sizeof(i.name) - 1] = 0;
+ i.ifa = &a;
+ get_sockaddr((struct sockaddr_in *) &r->ifr_addr, &a.ip, NULL);
+ l = ipa_classify(a.ip);
+ if (l < 0 || !(l & IADDR_HOST))
+ {
+ log(L_ERR "%s: Invalid interface address", i.name);
+ goto bad;
+ }
+ if ((l & IADDR_SCOPE_MASK) == 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_UP) | IF_ADMIN_DOWN;
+ continue;
+ }
+ fl = r->ifr_flags;
+ if (fl & IFF_UP)
+ i.flags |= IF_UP;
+
+ if (ioctl(if_scan_sock, SIOCGIFNETMASK, r) < 0)
+ { err = "SIOCGIFNETMASK"; goto faulty; }
+ get_sockaddr((struct sockaddr_in *) &r->ifr_addr, &netmask, NULL);
+ l = ipa_mklen(netmask);
+ if (l < 0 || l == 31)
+ {
+ log(L_ERR "%s: Invalid netmask", i.name);
+ goto bad;
+ }
+ a.pxlen = l;
+
+ if (fl & IFF_POINTOPOINT)
+ {
+ i.flags |= IF_UNNUMBERED;
+ a.pxlen = BITS_PER_IP_ADDRESS;
+ if (ioctl(if_scan_sock, SIOCGIFDSTADDR, r) < 0)
+ { err = "SIOCGIFDSTADDR"; goto faulty; }
+ get_sockaddr((struct sockaddr_in *) &r->ifr_addr, &a.opposite, NULL);
+ }
+ if (fl & IFF_LOOPBACK)
+ i.flags |= IF_LOOPBACK | IF_IGNORE;
+#ifndef CONFIG_ALL_MULTICAST
+ if (fl & IFF_MULTICAST)
+#endif
+ i.flags |= IF_MULTICAST;
+
+ a.prefix = ipa_and(a.ip, ipa_mkmask(a.pxlen));
+ 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;
+ else
+ a.opposite = ipa_opposite(a.ip);
+ }
+ else
+ a.brd = a.opposite;
+
+ 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)
+ { err = "SIOCGIFINDEX"; goto faulty; }
+ i.index = r->ifr_ifindex;
+#endif
+
+ if_update(&i);
+ }
+}
+
+static void
+scan_if(timer *t)
+{
+ struct ifconf ic;
+ static int last_ifbuf_size;
+ int res;
+
+ DBG("Scanning interfaces...\n");
+ for(;;)
+ {
+ if (last_ifbuf_size)
+ {
+ struct ifreq *r = alloca(last_ifbuf_size);
+ ic.ifc_ifcu.ifcu_req = r;
+ ic.ifc_len = last_ifbuf_size;
+ res = ioctl(if_scan_sock, SIOCGIFCONF, &ic);
+ if (res < 0 && errno != EFAULT)
+ die("SIOCCGIFCONF: %m");
+ if (res < last_ifbuf_size)
+ {
+ scan_ifs(r, ic.ifc_len);
+ break;
+ }
+ }
+ ic.ifc_ifcu.ifcu_req = NULL;
+ if (ioctl(if_scan_sock, SIOCGIFCONF, &ic) < 0)
+ die("SIOCIFCONF: %m");
+ ic.ifc_len += sizeof(struct ifreq);
+ if (last_ifbuf_size < ic.ifc_len)
+ {
+ last_ifbuf_size = ic.ifc_len;
+ DBG("Increased ifconf buffer size to %d\n", last_ifbuf_size);
+ }
+ }
+}
+
+void
+scan_if_init(void)
+{
+ if_scan_sock = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
+ DBG("Using socket %d for interface and route scanning\n", if_scan_sock);
+ if (if_scan_sock < 0)
+ die("Cannot create scanning socket: %m");
+ scan_if(NULL);
+ if_scan_timer = tm_new(&root_pool);
+ if_scan_timer->hook = scan_if;
+ if_scan_timer->recurrent = if_scan_period;
+ tm_start(if_scan_timer, if_scan_period);
+}
+
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-02 02:34:24 +0100