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authorAndrew Bartlett <abartlet@samba.org>2011-05-02 13:02:17 +1000
committerAndrew Tridgell <tridge@samba.org>2011-05-08 12:57:04 +0200
commitf346a737855bb5018978f0fcf1dcafbf5dc7e603 (patch)
tree9e4c805a71d5d0aeec62033cd4cbedb920a3a941 /source4/lib
parent879498b3622102630a5ade8d7d5421720f6fd7c6 (diff)
downloadsamba-f346a737855bb5018978f0fcf1dcafbf5dc7e603.tar.gz
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lib/socket move interfaces code to the top level
Diffstat (limited to 'source4/lib')
-rw-r--r--source4/lib/socket/netif.c314
-rw-r--r--source4/lib/socket/netif.h16
-rw-r--r--source4/lib/socket/wscript_build10
3 files changed, 6 insertions, 334 deletions
diff --git a/source4/lib/socket/netif.c b/source4/lib/socket/netif.c
deleted file mode 100644
index 2846813d3f..0000000000
--- a/source4/lib/socket/netif.c
+++ /dev/null
@@ -1,314 +0,0 @@
-/*
- Unix SMB/CIFS implementation.
- return a list of network interfaces
- Copyright (C) Andrew Tridgell 1998
- Copyright (C) Jeremy Allison 2007
- Copyright (C) Jelmer Vernooij 2007
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 3 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>.
-*/
-
-
-/* working out the interfaces for a OS is an incredibly non-portable
- thing. We have several possible implementations below, and autoconf
- tries each of them to see what works
-
- Note that this file does _not_ include includes.h. That is so this code
- can be called directly from the autoconf tests. That also means
- this code cannot use any of the normal Samba debug stuff or defines.
- This is standalone code.
-
-*/
-
-#include "includes.h"
-#include "system/network.h"
-#include "netif.h"
-#include "lib/util/tsort.h"
-
-/****************************************************************************
- Create a struct sockaddr_storage with the netmask bits set to 1.
-****************************************************************************/
-
-bool make_netmask(struct sockaddr_storage *pss_out,
- const struct sockaddr_storage *pss_in,
- unsigned long masklen)
-{
- *pss_out = *pss_in;
- /* Now apply masklen bits of mask. */
-#if defined(HAVE_IPV6)
- if (pss_in->ss_family == AF_INET6) {
- char *p = (char *)&((struct sockaddr_in6 *)pss_out)->sin6_addr;
- unsigned int i;
-
- if (masklen > 128) {
- return false;
- }
- for (i = 0; masklen >= 8; masklen -= 8, i++) {
- *p++ = 0xff;
- }
- /* Deal with the partial byte. */
- *p++ &= (0xff & ~(0xff>>masklen));
- i++;
- for (;i < sizeof(struct in6_addr); i++) {
- *p++ = '\0';
- }
- return true;
- }
-#endif
- if (pss_in->ss_family == AF_INET) {
- if (masklen > 32) {
- return false;
- }
- ((struct sockaddr_in *)pss_out)->sin_addr.s_addr =
- htonl(((0xFFFFFFFFL >> masklen) ^ 0xFFFFFFFFL));
- return true;
- }
- return false;
-}
-
-/****************************************************************************
- Create a struct sockaddr_storage set to the broadcast or network adress from
- an incoming sockaddr_storage.
-****************************************************************************/
-
-static void make_bcast_or_net(struct sockaddr_storage *pss_out,
- const struct sockaddr_storage *pss_in,
- const struct sockaddr_storage *nmask,
- bool make_bcast_p)
-{
- unsigned int i = 0, len = 0;
- char *pmask = NULL;
- char *p = NULL;
- *pss_out = *pss_in;
-
- /* Set all zero netmask bits to 1. */
-#if defined(HAVE_IPV6)
- if (pss_in->ss_family == AF_INET6) {
- p = (char *)&((struct sockaddr_in6 *)pss_out)->sin6_addr;
- pmask = discard_const_p(char, &((struct sockaddr_in6 *)nmask)->sin6_addr);
- len = 16;
- }
-#endif
- if (pss_in->ss_family == AF_INET) {
- p = (char *)&((struct sockaddr_in *)pss_out)->sin_addr;
- pmask = discard_const_p(char, &((struct sockaddr_in *)nmask)->sin_addr);
- len = 4;
- }
-
- for (i = 0; i < len; i++, p++, pmask++) {
- if (make_bcast_p) {
- *p = (*p & *pmask) | (*pmask ^ 0xff);
- } else {
- /* make_net */
- *p = (*p & *pmask);
- }
- }
-}
-
-void make_bcast(struct sockaddr_storage *pss_out,
- const struct sockaddr_storage *pss_in,
- const struct sockaddr_storage *nmask)
-{
- make_bcast_or_net(pss_out, pss_in, nmask, true);
-}
-
-void make_net(struct sockaddr_storage *pss_out,
- const struct sockaddr_storage *pss_in,
- const struct sockaddr_storage *nmask)
-{
- make_bcast_or_net(pss_out, pss_in, nmask, false);
-}
-
-
-/****************************************************************************
- Try the "standard" getifaddrs/freeifaddrs interfaces.
- Also gets IPv6 interfaces.
-****************************************************************************/
-
-/****************************************************************************
- Get the netmask address for a local interface.
-****************************************************************************/
-
-static int _get_interfaces(TALLOC_CTX *mem_ctx, struct iface_struct **pifaces)
-{
- struct iface_struct *ifaces;
- struct ifaddrs *iflist = NULL;
- struct ifaddrs *ifptr = NULL;
- int count;
- int total = 0;
- size_t copy_size;
-
- if (getifaddrs(&iflist) < 0) {
- return -1;
- }
-
- count = 0;
- for (ifptr = iflist; ifptr != NULL; ifptr = ifptr->ifa_next) {
- if (!ifptr->ifa_addr || !ifptr->ifa_netmask) {
- continue;
- }
- if (!(ifptr->ifa_flags & IFF_UP)) {
- continue;
- }
- count += 1;
- }
-
- ifaces = talloc_array(mem_ctx, struct iface_struct, count);
- if (ifaces == NULL) {
- errno = ENOMEM;
- return -1;
- }
-
- /* Loop through interfaces, looking for given IP address */
- for (ifptr = iflist; ifptr != NULL; ifptr = ifptr->ifa_next) {
-
- if (!ifptr->ifa_addr || !ifptr->ifa_netmask) {
- continue;
- }
-
- /* Check the interface is up. */
- if (!(ifptr->ifa_flags & IFF_UP)) {
- continue;
- }
-
- memset(&ifaces[total], '\0', sizeof(ifaces[total]));
-
- copy_size = sizeof(struct sockaddr_in);
-
- ifaces[total].flags = ifptr->ifa_flags;
-
-#if defined(HAVE_IPV6)
- if (ifptr->ifa_addr->sa_family == AF_INET6) {
- copy_size = sizeof(struct sockaddr_in6);
- }
-#endif
-
- memcpy(&ifaces[total].ip, ifptr->ifa_addr, copy_size);
- memcpy(&ifaces[total].netmask, ifptr->ifa_netmask, copy_size);
-
- if (ifaces[total].flags & (IFF_BROADCAST|IFF_LOOPBACK)) {
- make_bcast(&ifaces[total].bcast,
- &ifaces[total].ip,
- &ifaces[total].netmask);
- } else if ((ifaces[total].flags & IFF_POINTOPOINT) &&
- ifptr->ifa_dstaddr ) {
- memcpy(&ifaces[total].bcast,
- ifptr->ifa_dstaddr,
- copy_size);
- } else {
- continue;
- }
-
- strlcpy(ifaces[total].name, ifptr->ifa_name,
- sizeof(ifaces[total].name));
- total++;
- }
-
- freeifaddrs(iflist);
-
- *pifaces = ifaces;
- return total;
-}
-
-static int iface_comp(struct iface_struct *i1, struct iface_struct *i2)
-{
- int r;
-
-#if defined(HAVE_IPV6)
- /*
- * If we have IPv6 - sort these interfaces lower
- * than any IPv4 ones.
- */
- if (i1->ip.ss_family == AF_INET6 &&
- i2->ip.ss_family == AF_INET) {
- return -1;
- } else if (i1->ip.ss_family == AF_INET &&
- i2->ip.ss_family == AF_INET6) {
- return 1;
- }
-
- if (i1->ip.ss_family == AF_INET6) {
- struct sockaddr_in6 *s1 = (struct sockaddr_in6 *)&i1->ip;
- struct sockaddr_in6 *s2 = (struct sockaddr_in6 *)&i2->ip;
-
- r = memcmp(&s1->sin6_addr,
- &s2->sin6_addr,
- sizeof(struct in6_addr));
- if (r) {
- return r;
- }
-
- s1 = (struct sockaddr_in6 *)&i1->netmask;
- s2 = (struct sockaddr_in6 *)&i2->netmask;
-
- r = memcmp(&s1->sin6_addr,
- &s2->sin6_addr,
- sizeof(struct in6_addr));
- if (r) {
- return r;
- }
- }
-#endif
-
- /* AIX uses __ss_family instead of ss_family inside of
- sockaddr_storage. Instead of trying to figure out which field to
- use, we can just cast it to a sockaddr.
- */
-
- if (((struct sockaddr *)&i1->ip)->sa_family == AF_INET) {
- struct sockaddr_in *s1 = (struct sockaddr_in *)&i1->ip;
- struct sockaddr_in *s2 = (struct sockaddr_in *)&i2->ip;
-
- r = ntohl(s1->sin_addr.s_addr) -
- ntohl(s2->sin_addr.s_addr);
- if (r) {
- return r;
- }
-
- s1 = (struct sockaddr_in *)&i1->netmask;
- s2 = (struct sockaddr_in *)&i2->netmask;
-
- return ntohl(s1->sin_addr.s_addr) -
- ntohl(s2->sin_addr.s_addr);
- }
- return 0;
-}
-
-/* this wrapper is used to remove duplicates from the interface list generated
- above */
-int get_interfaces(TALLOC_CTX *mem_ctx, struct iface_struct **pifaces)
-{
- struct iface_struct *ifaces;
- int total, i, j;
-
- total = _get_interfaces(mem_ctx, &ifaces);
- if (total <= 0) return total;
-
- /* now we need to remove duplicates */
- TYPESAFE_QSORT(ifaces, total, iface_comp);
-
- for (i=1;i<total;) {
- if (iface_comp(&ifaces[i-1], &ifaces[i]) == 0) {
- for (j=i-1;j<total-1;j++) {
- ifaces[j] = ifaces[j+1];
- }
- total--;
- } else {
- i++;
- }
- }
-
- *pifaces = ifaces;
- return total;
-}
diff --git a/source4/lib/socket/netif.h b/source4/lib/socket/netif.h
index 6a06c4bf15..1d90a4fd13 100644
--- a/source4/lib/socket/netif.h
+++ b/source4/lib/socket/netif.h
@@ -20,19 +20,5 @@
*/
#include "system/network.h"
-
-struct iface_struct {
- char name[16];
- int flags;
- struct sockaddr_storage ip;
- struct sockaddr_storage netmask;
- struct sockaddr_storage bcast;
-};
-
-struct interface;
-
-#define MAX_INTERFACES 128
-
-#ifndef AUTOCONF_TEST
+#include "lib/socket/interfaces.h"
#include "lib/socket/netif_proto.h"
-#endif
diff --git a/source4/lib/socket/wscript_build b/source4/lib/socket/wscript_build
index e2ff9b078a..fa497335fb 100644
--- a/source4/lib/socket/wscript_build
+++ b/source4/lib/socket/wscript_build
@@ -1,11 +1,11 @@
#!/usr/bin/env python
bld.SAMBA_LIBRARY('netif',
- source='interface.c netif.c',
- autoproto='netif_proto.h',
- deps='samba-util',
- private_library=True
- )
+ source='interface.c',
+ deps='samba-util interfaces',
+ private_library=True,
+ autoproto='netif_proto.h'
+ )
bld.SAMBA_MODULE('socket_ip',
source='socket_ip.c',