diff options
Diffstat (limited to 'src/libsystemd-network/dhcp6-network.c')
| -rw-r--r-- | src/libsystemd-network/dhcp6-network.c | 194 |
1 files changed, 0 insertions, 194 deletions
diff --git a/src/libsystemd-network/dhcp6-network.c b/src/libsystemd-network/dhcp6-network.c deleted file mode 100644 index fe56c10273..0000000000 --- a/src/libsystemd-network/dhcp6-network.c +++ /dev/null @@ -1,194 +0,0 @@ -/*** - This file is part of systemd. - - Copyright (C) 2014 Intel Corporation. All rights reserved. - - systemd 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. - - systemd 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 systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include <errno.h> -#include <sys/types.h> -#include <sys/socket.h> -#include <string.h> -#include <linux/if_packet.h> -#include <stdio.h> -#include <unistd.h> -#include <netinet/ip6.h> -#include <netinet/icmp6.h> -#include <netinet/in.h> - -#include "socket-util.h" - -#include "dhcp6-internal.h" -#include "dhcp6-protocol.h" - -#define IN6ADDR_ALL_ROUTERS_MULTICAST_INIT \ - { { { 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \ - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02 } } } - -#define IN6ADDR_ALL_NODES_MULTICAST_INIT \ - { { { 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \ - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 } } } - -int dhcp_network_icmp6_bind_router_solicitation(int index) -{ - struct icmp6_filter filter = { }; - struct ipv6_mreq mreq = { - .ipv6mr_multiaddr = IN6ADDR_ALL_NODES_MULTICAST_INIT, - .ipv6mr_interface = index, - }; - _cleanup_close_ int s = -1; - int r, zero = 0, hops = 255; - - s = socket(AF_INET6, SOCK_RAW | SOCK_CLOEXEC | SOCK_NONBLOCK, - IPPROTO_ICMPV6); - if (s < 0) - return -errno; - - ICMP6_FILTER_SETBLOCKALL(&filter); - ICMP6_FILTER_SETPASS(ND_ROUTER_ADVERT, &filter); - r = setsockopt(s, IPPROTO_ICMPV6, ICMP6_FILTER, &filter, - sizeof(filter)); - if (r < 0) - return -errno; - - /* RFC 3315, section 6.7, bullet point 2 may indicate that an - IPV6_PKTINFO socket option also applies for ICMPv6 multicast. - Empirical experiments indicates otherwise and therefore an - IPV6_MULTICAST_IF socket option is used here instead */ - r = setsockopt(s, IPPROTO_IPV6, IPV6_MULTICAST_IF, &index, - sizeof(index)); - if (r < 0) - return -errno; - - r = setsockopt(s, IPPROTO_IPV6, IPV6_MULTICAST_LOOP, &zero, - sizeof(zero)); - if (r < 0) - return -errno; - - r = setsockopt(s, IPPROTO_IPV6, IPV6_MULTICAST_HOPS, &hops, - sizeof(hops)); - if (r < 0) - return -errno; - - r = setsockopt(s, IPPROTO_IPV6, IPV6_ADD_MEMBERSHIP, &mreq, - sizeof(mreq)); - if (r < 0) - return -errno; - - r = s; - s = -1; - return r; -} - -int dhcp_network_icmp6_send_router_solicitation(int s, const struct ether_addr *ether_addr) -{ - struct sockaddr_in6 dst = { - .sin6_family = AF_INET6, - .sin6_addr = IN6ADDR_ALL_ROUTERS_MULTICAST_INIT, - }; - struct { - struct nd_router_solicit rs; - struct nd_opt_hdr rs_opt; - struct ether_addr rs_opt_mac; - } _packed_ rs = { - .rs.nd_rs_type = ND_ROUTER_SOLICIT, - }; - struct iovec iov[1] = { - { &rs, }, - }; - struct msghdr msg = { - .msg_name = &dst, - .msg_namelen = sizeof(dst), - .msg_iov = iov, - .msg_iovlen = 1, - }; - int r; - - if (ether_addr) { - memcpy(&rs.rs_opt_mac, ether_addr, ETH_ALEN); - rs.rs_opt.nd_opt_type = ND_OPT_SOURCE_LINKADDR; - rs.rs_opt.nd_opt_len = 1; - iov[0].iov_len = sizeof(rs); - } else - iov[0].iov_len = sizeof(rs.rs); - - r = sendmsg(s, &msg, 0); - if (r < 0) - return -errno; - - return 0; -} - -int dhcp6_network_bind_udp_socket(int index, struct in6_addr *local_address) { - struct in6_pktinfo pktinfo = { - .ipi6_ifindex = index, - }; - union sockaddr_union src = { - .in6.sin6_family = AF_INET6, - .in6.sin6_port = htobe16(DHCP6_PORT_CLIENT), - .in6.sin6_addr = IN6ADDR_ANY_INIT, - }; - _cleanup_close_ int s = -1; - int r, off = 0, on = 1; - - if (local_address) - memcpy(&src.in6.sin6_addr, local_address, - sizeof(src.in6.sin6_addr)); - - s = socket(AF_INET6, SOCK_DGRAM | SOCK_CLOEXEC | SOCK_NONBLOCK, - IPPROTO_UDP); - if (s < 0) - return -errno; - - r = setsockopt(s, IPPROTO_IPV6, IPV6_PKTINFO, &pktinfo, - sizeof(pktinfo)); - if (r < 0) - return -errno; - - r = setsockopt(s, IPPROTO_IPV6, IPV6_V6ONLY, &on, sizeof(on)); - if (r < 0) - return -errno; - - r = setsockopt(s, IPPROTO_IPV6, IPV6_MULTICAST_LOOP, &off, sizeof(off)); - if (r < 0) - return -errno; - - r = bind(s, &src.sa, sizeof(src.in6)); - if (r < 0) - return -errno; - - r = s; - s = -1; - return r; -} - -int dhcp6_network_send_udp_socket(int s, struct in6_addr *server_address, - const void *packet, size_t len) { - union sockaddr_union dest = { - .in6.sin6_family = AF_INET6, - .in6.sin6_port = htobe16(DHCP6_PORT_SERVER), - }; - int r; - - assert(server_address); - - memcpy(&dest.in6.sin6_addr, server_address, sizeof(dest.in6.sin6_addr)); - - r = sendto(s, packet, len, 0, &dest.sa, sizeof(dest.in6)); - if (r < 0) - return -errno; - - return 0; -} |