From ba8f85b49c38af7bc2a9acdef5dcde2de008d25e Mon Sep 17 00:00:00 2001
From: peter <peter@FreeBSD.org>
Date: Sat, 12 Jul 2008 05:00:28 +0000
Subject: Flatten bind9 vendor work area
---
lib/isc/unix/ifiter_getifaddrs.c | 185 +++++++++++++++++++++++++++++++++++++++
1 file changed, 185 insertions(+)
create mode 100644 lib/isc/unix/ifiter_getifaddrs.c
(limited to 'lib/isc/unix/ifiter_getifaddrs.c')
diff --git a/lib/isc/unix/ifiter_getifaddrs.c b/lib/isc/unix/ifiter_getifaddrs.c
new file mode 100644
index 0000000..3599a89
--- /dev/null
+++ b/lib/isc/unix/ifiter_getifaddrs.c
@@ -0,0 +1,185 @@
+/*
+ * Copyright (C) 2004, 2005, 2007 Internet Systems Consortium, Inc. ("ISC")
+ * Copyright (C) 2003 Internet Software Consortium.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
+ * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+ * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+ * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
+ * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/* $Id: ifiter_getifaddrs.c,v 1.4.18.5 2007/08/28 07:20:06 tbox Exp $ */
+
+/*! \file
+ * \brief
+ * Obtain the list of network interfaces using the getifaddrs(3) library.
+ */
+
+#include <ifaddrs.h>
+
+/*% Iterator Magic */
+#define IFITER_MAGIC ISC_MAGIC('I', 'F', 'I', 'G')
+/*% Valid Iterator */
+#define VALID_IFITER(t) ISC_MAGIC_VALID(t, IFITER_MAGIC)
+
+/*% Iterator structure */
+struct isc_interfaceiter {
+ unsigned int magic; /*%< Magic number. */
+ isc_mem_t *mctx;
+ void *buf; /*%< (unused) */
+ unsigned int bufsize; /*%< (always 0) */
+ struct ifaddrs *ifaddrs; /*%< List of ifaddrs */
+ struct ifaddrs *pos; /*%< Ptr to current ifaddr */
+ isc_interface_t current; /*%< Current interface data. */
+ isc_result_t result; /*%< Last result code. */
+};
+
+
+isc_result_t
+isc_interfaceiter_create(isc_mem_t *mctx, isc_interfaceiter_t **iterp) {
+ isc_interfaceiter_t *iter;
+ isc_result_t result;
+ char strbuf[ISC_STRERRORSIZE];
+
+ REQUIRE(mctx != NULL);
+ REQUIRE(iterp != NULL);
+ REQUIRE(*iterp == NULL);
+
+ iter = isc_mem_get(mctx, sizeof(*iter));
+ if (iter == NULL)
+ return (ISC_R_NOMEMORY);
+
+ iter->mctx = mctx;
+ iter->buf = NULL;
+ iter->bufsize = 0;
+ iter->ifaddrs = NULL;
+
+ if (getifaddrs(&iter->ifaddrs) < 0) {
+ isc__strerror(errno, strbuf, sizeof(strbuf));
+ UNEXPECTED_ERROR(__FILE__, __LINE__,
+ isc_msgcat_get(isc_msgcat,
+ ISC_MSGSET_IFITERGETIFADDRS,
+ ISC_MSG_GETIFADDRS,
+ "getting interface "
+ "addresses: getifaddrs: %s"),
+ strbuf);
+ result = ISC_R_UNEXPECTED;
+ goto failure;
+ }
+
+ /*
+ * A newly created iterator has an undefined position
+ * until isc_interfaceiter_first() is called.
+ */
+ iter->pos = NULL;
+ iter->result = ISC_R_FAILURE;
+
+ iter->magic = IFITER_MAGIC;
+ *iterp = iter;
+ return (ISC_R_SUCCESS);
+
+ failure:
+ if (iter->ifaddrs != NULL) /* just in case */
+ freeifaddrs(iter->ifaddrs);
+ isc_mem_put(mctx, iter, sizeof(*iter));
+ return (result);
+}
+
+/*
+ * Get information about the current interface to iter->current.
+ * If successful, return ISC_R_SUCCESS.
+ * If the interface has an unsupported address family,
+ * return ISC_R_IGNORE.
+ */
+
+static isc_result_t
+internal_current(isc_interfaceiter_t *iter) {
+ struct ifaddrs *ifa;
+ int family;
+ unsigned int namelen;
+
+ REQUIRE(VALID_IFITER(iter));
+
+ ifa = iter->pos;
+
+ INSIST(ifa != NULL);
+ INSIST(ifa->ifa_name != NULL);
+
+ if (ifa->ifa_addr == NULL)
+ return (ISC_R_IGNORE);
+
+ family = ifa->ifa_addr->sa_family;
+ if (family != AF_INET && family != AF_INET6)
+ return (ISC_R_IGNORE);
+
+ memset(&iter->current, 0, sizeof(iter->current));
+
+ namelen = strlen(ifa->ifa_name);
+ if (namelen > sizeof(iter->current.name) - 1)
+ namelen = sizeof(iter->current.name) - 1;
+
+ memset(iter->current.name, 0, sizeof(iter->current.name));
+ memcpy(iter->current.name, ifa->ifa_name, namelen);
+
+ iter->current.flags = 0;
+
+ if ((ifa->ifa_flags & IFF_UP) != 0)
+ iter->current.flags |= INTERFACE_F_UP;
+
+ if ((ifa->ifa_flags & IFF_POINTOPOINT) != 0)
+ iter->current.flags |= INTERFACE_F_POINTTOPOINT;
+
+ if ((ifa->ifa_flags & IFF_LOOPBACK) != 0)
+ iter->current.flags |= INTERFACE_F_LOOPBACK;
+
+ iter->current.af = family;
+
+ get_addr(family, &iter->current.address, ifa->ifa_addr, ifa->ifa_name);
+
+ if (ifa->ifa_netmask != NULL)
+ get_addr(family, &iter->current.netmask, ifa->ifa_netmask,
+ ifa->ifa_name);
+
+ if (ifa->ifa_dstaddr != NULL &&
+ (iter->current.flags & IFF_POINTOPOINT) != 0)
+ get_addr(family, &iter->current.dstaddress, ifa->ifa_dstaddr,
+ ifa->ifa_name);
+
+ return (ISC_R_SUCCESS);
+}
+
+/*
+ * Step the iterator to the next interface. Unlike
+ * isc_interfaceiter_next(), this may leave the iterator
+ * positioned on an interface that will ultimately
+ * be ignored. Return ISC_R_NOMORE if there are no more
+ * interfaces, otherwise ISC_R_SUCCESS.
+ */
+static isc_result_t
+internal_next(isc_interfaceiter_t *iter) {
+ iter->pos = iter->pos->ifa_next;
+
+ if (iter->pos == NULL)
+ return (ISC_R_NOMORE);
+
+ return (ISC_R_SUCCESS);
+}
+
+static void
+internal_destroy(isc_interfaceiter_t *iter) {
+ if (iter->ifaddrs)
+ freeifaddrs(iter->ifaddrs);
+ iter->ifaddrs = NULL;
+}
+
+static
+void internal_first(isc_interfaceiter_t *iter) {
+ iter->pos = iter->ifaddrs;
+}
--
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