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78 lines
2.7 KiB
78 lines
2.7 KiB
/* |
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* Copyright (C) 2017 The Android Open Source Project |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0 |
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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*/ |
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#include <ios> |
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#include <linux/netlink.h> |
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#include "netdutils/Math.h" |
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#include "netdutils/Netlink.h" |
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namespace android { |
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namespace netdutils { |
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void forEachNetlinkMessage(const Slice buf, |
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const std::function<void(const nlmsghdr&, const Slice)>& onMsg) { |
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Slice tail = buf; |
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while (tail.size() >= sizeof(nlmsghdr)) { |
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nlmsghdr hdr = {}; |
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extract(tail, hdr); |
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const auto len = std::max<size_t>(hdr.nlmsg_len, sizeof(hdr)); |
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onMsg(hdr, drop(take(tail, len), sizeof(hdr))); |
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tail = drop(tail, align(len, 2)); |
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} |
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} |
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void forEachNetlinkAttribute(const Slice buf, |
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const std::function<void(const nlattr&, const Slice)>& onAttr) { |
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Slice tail = buf; |
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while (tail.size() >= sizeof(nlattr)) { |
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nlattr hdr = {}; |
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extract(tail, hdr); |
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const auto len = std::max<size_t>(hdr.nla_len, sizeof(hdr)); |
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onAttr(hdr, drop(take(tail, len), sizeof(hdr))); |
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tail = drop(tail, align(len, 2)); |
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} |
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} |
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} // namespace netdutils |
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} // namespace android |
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bool operator==(const sockaddr_nl& lhs, const sockaddr_nl& rhs) { |
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return (lhs.nl_family == rhs.nl_family) && (lhs.nl_pid == rhs.nl_pid) && |
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(lhs.nl_groups == rhs.nl_groups); |
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} |
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bool operator!=(const sockaddr_nl& lhs, const sockaddr_nl& rhs) { |
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return !(lhs == rhs); |
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} |
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std::ostream& operator<<(std::ostream& os, const nlmsghdr& hdr) { |
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return os << std::hex << "nlmsghdr[" |
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<< "len: 0x" << hdr.nlmsg_len << ", type: 0x" << hdr.nlmsg_type << ", flags: 0x" |
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<< hdr.nlmsg_flags << ", seq: 0x" << hdr.nlmsg_seq << ", pid: 0x" << hdr.nlmsg_pid |
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<< "]" << std::dec; |
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} |
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std::ostream& operator<<(std::ostream& os, const nlattr& attr) { |
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return os << std::hex << "nlattr[" |
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<< "len: 0x" << attr.nla_len << ", type: 0x" << attr.nla_type << "]" << std::dec; |
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} |
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std::ostream& operator<<(std::ostream& os, const sockaddr_nl& addr) { |
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return os << std::hex << "sockaddr_nl[" |
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<< "family: " << addr.nl_family << ", pid: " << addr.nl_pid |
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<< ", groups: " << addr.nl_groups << "]" << std::dec; |
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}
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