---- a/mcproxy/src/utils/mc_socket.cpp
-+++ b/mcproxy/src/utils/mc_socket.cpp
-@@ -37,6 +37,10 @@
- #include <numeric>
- #include <unistd.h>
-
-+#ifdef __UCLIBC__
-+#include "sourcefilter.cpp"
-+#endif /* __UCLIBC__ */
-+
- std::string ipAddrResolver(std::string ipAddr)
- {
- std::string str[][2] = {
---- /dev/null
-+++ b/mcproxy/src/utils/sourcefilter.cpp
-@@ -0,0 +1,165 @@
-+/* Get source filter. Linux version.
-+ Copyright (C) 2004-2014 Free Software Foundation, Inc.
-+ This file is part of the GNU C Library.
-+ Contributed by Ulrich Drepper <drepper@redhat.com>, 2004.
-+
-+ The GNU C Library is free software; you can redistribute it and/or
-+ modify it under the terms of the GNU Lesser General Public
-+ License as published by the Free Software Foundation; either
-+ version 2.1 of the License, or (at your option) any later version.
-+
-+ The GNU C Library 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
-+ Lesser General Public License for more details.
-+
-+ You should have received a copy of the GNU Lesser General Public
-+ License along with the GNU C Library; if not, see
-+ <http://www.gnu.org/licenses/>. */
-+
-+#include <assert.h>
-+#include <errno.h>
-+#include <stdlib.h>
-+#include <string.h>
-+#include <stdint.h>
-+#include <netinet/in.h>
-+#include <netpacket/packet.h>
-+#include <sys/param.h>
-+#include <sys/socket.h>
-+
-+static const struct
-+{
-+ int sol;
-+ int af;
-+ socklen_t size;
-+} sol_map[] =
-+ {
-+ /* Sort the array according to importance of the protocols. Add
-+ more protocols when they become available. */
-+ { SOL_IP, AF_INET, sizeof (struct sockaddr_in) },
-+ { SOL_IPV6, AF_INET6, sizeof (struct sockaddr_in6) },
-+ { SOL_PACKET, AF_PACKET, sizeof (struct sockaddr_ll) }
-+ };
-+#define NSOL_MAP (sizeof (sol_map) / sizeof (sol_map[0]))
-+
-+
-+/* Try to determine the socket level value. Ideally both side and
-+ family are set. But sometimes only the size is correct and the
-+ family value might be bogus. Loop over the array entries and look
-+ for a perfect match or the first match based on size. */
-+static int
-+__get_sol (int af, socklen_t len)
-+{
-+ int first_size_sol = -1;
-+
-+ for (size_t cnt = 0; cnt < NSOL_MAP; ++cnt)
-+ {
-+ /* Just a test so that we make sure the special value used to
-+ signal the "we have so far no socket level value" is OK. */
-+ assert (sol_map[cnt].sol != -1);
-+
-+ if (len == sol_map[cnt].size)
-+ {
-+ /* The size matches, which is a requirement. If the family
-+ matches, too, we have a winner. Otherwise we remember the
-+ socket level value for this protocol if it is the first
-+ match. */
-+ if (af == sol_map[cnt].af)
-+ /* Bingo! */
-+ return sol_map[cnt].sol;
-+
-+ if (first_size_sol == -1)
-+ first_size_sol = sol_map[cnt].sol;
-+ }
-+ }
-+
-+ return first_size_sol;
-+}
-+
-+
-+int
-+getsourcefilter (int s, uint32_t interface, const struct sockaddr *group,
-+ socklen_t grouplen, uint32_t *fmode, uint32_t *numsrc,
-+ struct sockaddr_storage *slist)
-+{
-+ /* We have to create an struct ip_msfilter object which we can pass
-+ to the kernel. */
-+ socklen_t needed = GROUP_FILTER_SIZE (*numsrc);
-+ struct group_filter *gf;
-+ gf = (struct group_filter *) malloc (needed);
-+ if (gf == NULL)
-+ return -1;
-+
-+ gf->gf_interface = interface;
-+ memcpy (&gf->gf_group, group, grouplen);
-+ gf->gf_numsrc = *numsrc;
-+
-+ /* We need to provide the appropriate socket level value. */
-+ int result;
-+ int sol = __get_sol (group->sa_family, grouplen);
-+ if (sol == -1)
-+ {
-+ errno = EINVAL;
-+ result = -1;
-+ }
-+ else
-+ {
-+ result = getsockopt (s, sol, MCAST_MSFILTER, gf, &needed);
-+
-+ /* If successful, copy the results to the places the caller wants
-+ them in. */
-+ if (result == 0)
-+ {
-+ *fmode = gf->gf_fmode;
-+ memcpy (slist, gf->gf_slist,
-+ MIN (*numsrc, gf->gf_numsrc)
-+ * sizeof (struct sockaddr_storage));
-+ *numsrc = gf->gf_numsrc;
-+ }
-+ }
-+
-+ int save_errno = errno;
-+ free (gf);
-+ errno = save_errno;
-+
-+ return result;
-+}
-+
-+
-+int
-+setsourcefilter (int s, uint32_t interface, const struct sockaddr *group,
-+ socklen_t grouplen, uint32_t fmode, uint32_t numsrc,
-+ const struct sockaddr_storage *slist)
-+{
-+ /* We have to create an struct ip_msfilter object which we can pass
-+ to the kernel. */
-+ size_t needed = GROUP_FILTER_SIZE (numsrc);
-+
-+ struct group_filter *gf;
-+ gf = (struct group_filter *) malloc (needed);
-+ if (gf == NULL)
-+ return -1;
-+
-+ gf->gf_interface = interface;
-+ memcpy (&gf->gf_group, group, grouplen);
-+ gf->gf_fmode = fmode;
-+ gf->gf_numsrc = numsrc;
-+ memcpy (gf->gf_slist, slist, numsrc * sizeof (struct sockaddr_storage));
-+
-+ /* We need to provide the appropriate socket level value. */
-+ int result;
-+ int sol = __get_sol (group->sa_family, grouplen);
-+ if (sol == -1)
-+ {
-+ errno = EINVAL;
-+ result = -1;
-+ }
-+ else
-+ result = setsockopt (s, sol, MCAST_MSFILTER, gf, needed);
-+
-+ int save_errno = errno;
-+ free (gf);
-+ errno = save_errno;
-+
-+ return result;
-+}
projects / feed / routing.git / blobdiff