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771ce8ad24
Allow 'ip igmp join' to join group for any source if no source is specified. Disallow joining source "0.0.0.0" as it is used to define an any-source multicast group. Signed-off-by: Liam McBirnie <liam.mcbirnie@boeing.com>
74 lines
2.1 KiB
C
74 lines
2.1 KiB
C
/*
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* PIM for Quagga
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* Copyright (C) 2008 Everton da Silva Marques
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; see the file COPYING; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef PIM_IGMP_JOIN_H
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#define PIM_IGMP_JOIN_H
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/* required headers #include'd by caller */
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#ifndef SOL_IP
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#define SOL_IP IPPROTO_IP
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#endif
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#ifndef MCAST_JOIN_GROUP
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#define MCAST_JOIN_GROUP 42
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#endif
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#ifndef MCAST_JOIN_SOURCE_GROUP
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#define MCAST_JOIN_SOURCE_GROUP 46
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struct group_source_req {
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uint32_t gsr_interface;
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struct sockaddr_storage gsr_group;
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struct sockaddr_storage gsr_source;
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};
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#endif
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static int pim_igmp_join_source(int fd, ifindex_t ifindex,
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struct in_addr group_addr,
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struct in_addr source_addr)
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{
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struct group_source_req req;
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struct sockaddr_in group;
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struct sockaddr_in source;
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memset(&req, 0, sizeof(req));
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memset(&group, 0, sizeof(group));
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group.sin_family = AF_INET;
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group.sin_addr = group_addr;
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group.sin_port = htons(0);
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memcpy(&req.gsr_group, &group, sizeof(struct sockaddr_in));
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memset(&source, 0, sizeof(source));
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source.sin_family = AF_INET;
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source.sin_addr = source_addr;
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source.sin_port = htons(0);
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memcpy(&req.gsr_source, &source, sizeof(struct sockaddr_in));
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req.gsr_interface = ifindex;
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if (source_addr.s_addr == INADDR_ANY)
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return setsockopt(fd, SOL_IP, MCAST_JOIN_GROUP, &req,
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sizeof(req));
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else
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return setsockopt(fd, SOL_IP, MCAST_JOIN_SOURCE_GROUP, &req,
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sizeof(req));
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}
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#endif /* PIM_IGMP_JOIN_H */
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