summaryrefslogtreecommitdiff
path: root/keyexchange/isakmpd-20041012/if.c
diff options
context:
space:
mode:
authorOthmar Gsenger <otti@anytun.org>2007-07-30 19:37:53 +0000
committerOthmar Gsenger <otti@anytun.org>2007-07-30 19:37:53 +0000
commit6585e5ad764ee2414d9b01f30784b6549bc8f58e (patch)
tree4ea258d5327838363dc3ac66d09ecc94686f3e26 /keyexchange/isakmpd-20041012/if.c
parentripe requests, final (diff)
added keyexchange
Diffstat (limited to 'keyexchange/isakmpd-20041012/if.c')
-rw-r--r--keyexchange/isakmpd-20041012/if.c152
1 files changed, 152 insertions, 0 deletions
diff --git a/keyexchange/isakmpd-20041012/if.c b/keyexchange/isakmpd-20041012/if.c
new file mode 100644
index 0000000..b9cf927
--- /dev/null
+++ b/keyexchange/isakmpd-20041012/if.c
@@ -0,0 +1,152 @@
+/* $OpenBSD: if.c,v 1.22 2004/06/14 09:55:41 ho Exp $ */
+/* $EOM: if.c,v 1.12 1999/10/01 13:45:20 niklas Exp $ */
+
+/*
+ * Copyright (c) 1998, 1999 Niklas Hallqvist. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/*
+ * This code was written under funding by Ericsson Radio Systems.
+ */
+
+#include <sys/ioctl.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <net/if.h>
+#include <stdlib.h>
+#include <unistd.h>
+#ifdef HAVE_GETIFADDRS
+#include <ifaddrs.h>
+#endif
+
+#include "sysdep.h"
+
+#include "log.h"
+#include "monitor.h"
+#include "if.h"
+
+#ifndef HAVE_GETIFADDRS
+/* XXX Unsafe if either x or y has side-effects. */
+#ifndef MAX
+#define MAX(x, y) ((x) > (y) ? (x) : (y))
+#endif
+
+/* Most boxes has less than 16 interfaces, so this might be a good guess. */
+#define INITIAL_IFREQ_COUNT 16
+
+/*
+ * Get all network interface configurations.
+ * Return 0 if successful, -1 otherwise.
+ */
+int
+siocgifconf(struct ifconf *ifcp)
+{
+ caddr_t buf, new_buf;
+ int s, len;
+
+ /* Get a socket to ask for the network interface configurations. */
+ s = socket(AF_INET, SOCK_DGRAM, 0);
+ if (s == -1) {
+ log_error("siocgifconf: "
+ "socket (AF_INET, SOCK_DGRAM, 0) failed");
+ return -1;
+ }
+ len = sizeof(struct ifreq) * INITIAL_IFREQ_COUNT;
+ buf = 0;
+ while (1) {
+ /*
+ * Allocate a larger buffer each time around the loop and get
+ * the network interfaces configurations into it.
+ */
+ new_buf = realloc(buf, len);
+ if (!new_buf) {
+ log_error("siocgifconf: realloc (%p, %d) failed", buf,
+ len);
+ goto err;
+ }
+ ifcp->ifc_len = len;
+ ifcp->ifc_buf = buf = new_buf;
+ if (ioctl(s, SIOCGIFCONF, ifcp) == -1) {
+ log_error("siocgifconf: ioctl (%d, SIOCGIFCONF, ...) "
+ "failed", s);
+ goto err;
+ }
+
+ /*
+ * If there is place for another ifreq we can be sure that the
+ * buffer was big enough, otherwise double the size and try
+ * again.
+ */
+ if (len - ifcp->ifc_len >= sizeof(struct ifreq))
+ break;
+ len *= 2;
+ }
+ close(s);
+ return 0;
+
+err:
+ if (buf)
+ free(buf);
+ ifcp->ifc_len = 0;
+ ifcp->ifc_buf = 0;
+ close(s);
+ return -1;
+}
+#endif
+
+int
+if_map(int (*func)(char *, struct sockaddr *, void *), void *arg)
+{
+ int err = 0;
+
+#ifdef HAVE_GETIFADDRS
+ struct ifaddrs *ifap, *ifa;
+
+ if (getifaddrs(&ifap) < 0)
+ return -1;
+
+ for (ifa = ifap; ifa; ifa = ifa->ifa_next)
+ if ((*func)(ifa->ifa_name, ifa->ifa_addr, arg) == -1)
+ err = -1;
+ freeifaddrs(ifap);
+#else
+ struct ifconf ifc;
+ struct ifreq *ifrp;
+ caddr_t limit, p;
+ size_t len;
+
+ if (siocgifconf(&ifc))
+ return -1;
+
+ limit = ifc.ifc_buf + ifc.ifc_len;
+ for (p = ifc.ifc_buf; p < limit; p += len) {
+ ifrp = (struct ifreq *)p;
+ if ((*func)(ifrp->ifr_name, &ifrp->ifr_addr, arg) == -1)
+ err = -1;
+ len = sizeof ifrp->ifr_name +
+ MAX(sysdep_sa_len(&ifrp->ifr_addr), sizeof ifrp->ifr_addr);
+ }
+ free(ifc.ifc_buf);
+#endif
+ return err;
+}