/Users/deen/code/yugabyte-db/src/yb/util/net/inetaddress.cc
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1 | | // Copyright (c) YugaByte, Inc. |
2 | | // |
3 | | // Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except |
4 | | // in compliance with the License. You may obtain a copy of the License at |
5 | | // |
6 | | // http://www.apache.org/licenses/LICENSE-2.0 |
7 | | // |
8 | | // Unless required by applicable law or agreed to in writing, software distributed under the License |
9 | | // is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express |
10 | | // or implied. See the License for the specific language governing permissions and limitations |
11 | | // under the License. |
12 | | // |
13 | | #include "yb/util/net/inetaddress.h" |
14 | | |
15 | | #include <memory> |
16 | | #include <string> |
17 | | #include <vector> |
18 | | |
19 | | #include "yb/gutil/strings/split.h" |
20 | | #include "yb/util/net/net_fwd.h" |
21 | | #include "yb/util/status.h" |
22 | | #include "yb/util/status_fwd.h" |
23 | | |
24 | | using boost::asio::ip::address; |
25 | | using boost::asio::ip::address_v4; |
26 | | using boost::asio::ip::address_v6; |
27 | | using boost::asio::ip::tcp; |
28 | | |
29 | | namespace yb { |
30 | | |
31 | 2.26M | InetAddress::InetAddress() { |
32 | 2.26M | } |
33 | | |
34 | | InetAddress::InetAddress(const boost::asio::ip::address& address) |
35 | 661k | : boost_addr_(address) { |
36 | 661k | } |
37 | | |
38 | 178k | InetAddress::InetAddress(const InetAddress& other) { |
39 | 178k | boost_addr_ = other.boost_addr_; |
40 | 178k | } |
41 | | |
42 | 23 | std::string InetAddress::ToString() const { |
43 | 23 | std::string strval; |
44 | 23 | CHECK_OK(ToString(&strval)); |
45 | 23 | return strval; |
46 | 23 | } |
47 | | |
48 | 33 | CHECKED_STATUS InetAddress::ToString(std::string *strval) const { |
49 | 33 | boost::system::error_code ec; |
50 | 33 | *strval = boost_addr_.to_string(ec); |
51 | 33 | if (ec.value()) { |
52 | 0 | return STATUS(IllegalState, "InetAddress object cannot be converted to string: $0", |
53 | 0 | ec.message()); |
54 | 0 | } |
55 | 33 | return Status::OK(); |
56 | 33 | } |
57 | | |
58 | 1.35M | std::string InetAddress::ToBytes() const { |
59 | 1.35M | std::string result; |
60 | 1.35M | AppendToBytes(&result); |
61 | 1.35M | return result; |
62 | 1.35M | } |
63 | | |
64 | 2.88M | void InetAddress::AppendToBytes(std::string* bytes) const { |
65 | 2.88M | if (boost_addr_.is_v4()) { |
66 | 2.88M | auto v4bytes = boost_addr_.to_v4().to_bytes(); |
67 | 2.88M | bytes->append(reinterpret_cast<char *>(v4bytes.data()), v4bytes.size()); |
68 | 2.88M | } else { |
69 | 1.24k | auto v6bytes = boost_addr_.to_v6().to_bytes(); |
70 | 1.24k | bytes->append(reinterpret_cast<char *>(v6bytes.data()), v6bytes.size()); |
71 | 1.24k | } |
72 | 2.88M | } |
73 | | |
74 | 2.19M | CHECKED_STATUS InetAddress::FromSlice(const Slice& slice, size_t size_hint) { |
75 | 18.4E | size_t expected_size = (size_hint == 0)2.19M ? slice.size()2.19M : size_hint; |
76 | 2.19M | if (expected_size > slice.size()) { |
77 | 0 | return STATUS_SUBSTITUTE(InvalidArgument, "Size of slice: $0 is smaller than provided " |
78 | 0 | "size_hint: $1", slice.size(), expected_size); |
79 | 0 | } |
80 | 2.19M | if (expected_size == kInetAddressV4Size) { |
81 | 2.19M | address_v4::bytes_type v4bytes; |
82 | 2.19M | DCHECK_EQ(expected_size, v4bytes.size()); |
83 | 2.19M | memcpy(v4bytes.data(), slice.data(), v4bytes.size()); |
84 | 2.19M | address_v4 v4address(v4bytes); |
85 | 2.19M | boost_addr_ = v4address; |
86 | 2.19M | } else if (908 expected_size == kInetAddressV6Size908 ) { |
87 | 866 | address_v6::bytes_type v6bytes; |
88 | 866 | DCHECK_EQ(expected_size, v6bytes.size()); |
89 | 866 | memcpy(v6bytes.data(), slice.data(), v6bytes.size()); |
90 | 866 | address_v6 v6address(v6bytes); |
91 | 866 | boost_addr_ = v6address; |
92 | 866 | } else { |
93 | 42 | return STATUS_SUBSTITUTE(InvalidArgument, "Size of slice is invalid: $0", expected_size); |
94 | 42 | } |
95 | 2.19M | return Status::OK(); |
96 | 2.19M | } |
97 | | |
98 | 2.19M | CHECKED_STATUS InetAddress::FromBytes(const std::string& bytes) { |
99 | 2.19M | Slice slice (bytes.data(), bytes.size()); |
100 | 2.19M | return FromSlice(slice); |
101 | 2.19M | } |
102 | | |
103 | 693 | bool IsIPv6NonLinkLocal(const IpAddress& address) { |
104 | 693 | if (!address.is_v6() || address.is_unspecified()689 ) { |
105 | 5 | return false; |
106 | 5 | } |
107 | 688 | boost::asio::ip::address_v6 v6_address = address.to_v6(); |
108 | 688 | return !v6_address.is_link_local(); |
109 | 693 | } |
110 | | |
111 | 701 | bool IsIPv6External(const IpAddress& address) { |
112 | 701 | return address.is_v6() && !address.is_unspecified()690 && |
113 | 701 | !address.is_loopback()687 && IsIPv6NonLinkLocal(address)9 ; |
114 | 701 | } |
115 | | |
116 | | typedef std::function<bool(const IpAddress&)> FilterType; |
117 | | |
118 | 131k | const std::map<string, FilterType>* GetFilters() { |
119 | 131k | static const auto ipv4_filter = [](const IpAddress& a) { return a.is_v4(); }102k ; |
120 | 131k | static const auto ipv6_filter = [](const IpAddress& a) { return a.is_v6(); }18 ; |
121 | 162k | static const auto ipv4_external_filter = [](const IpAddress& a) { |
122 | 162k | return !a.is_unspecified() && a.is_v4()162k && !a.is_loopback()162k ; |
123 | 162k | }; |
124 | 131k | static const auto ipv6_external_filter = [](const IpAddress& a) { |
125 | 701 | return IsIPv6External(a); |
126 | 701 | }; |
127 | 131k | static const auto ipv6_non_link_local_filter = [](const IpAddress& a) { |
128 | 684 | return IsIPv6NonLinkLocal(a); |
129 | 684 | }; |
130 | 131k | static const auto all_filter = [](const IpAddress& a) { return true; }0 ; |
131 | | |
132 | 131k | static const std::map<string, FilterType> kFilters( |
133 | 131k | { { "ipv4_all", |
134 | 131k | ipv4_filter }, // any IPv4 address including 0.0.0.0 and loopback |
135 | 131k | { "ipv6_all", |
136 | 131k | ipv6_filter }, // any IPv6 address including ::, loopback etc |
137 | 131k | { "ipv4_external", ipv4_external_filter }, // Non-loopback IPv4 |
138 | 131k | { "ipv6_external", |
139 | 131k | ipv6_external_filter }, // Non-loopback non-link-local IPv6 |
140 | 131k | { "ipv6_non_link_local", |
141 | 131k | ipv6_non_link_local_filter }, // Non-link-local, loopback is ok |
142 | 131k | { "all", all_filter } }); |
143 | | |
144 | 131k | return &kFilters; |
145 | 131k | } |
146 | | |
147 | | // Filter_spec has to be some subset of the following filters |
148 | | // ipv4_all,ipv4_external,ipv6_all,ipv6_external,ipv6_non_link_local |
149 | | // For ex: "ipv4_external,ipv4_all,ipv6_external,ipv6_non_link_local" |
150 | | // This would result in a vector that has |
151 | | // [ IPV4 external addresses, Remaining IPv4 addresses, IPv6 external addresses, |
152 | | // Non-external IPv6 non_link_local addresses ] |
153 | | // with [ link_local IPv6 addresses ] removed from the original list |
154 | 131k | void FilterAddresses(const string& filter_spec, vector<IpAddress>* addresses) { |
155 | 131k | if (filter_spec.empty()) { |
156 | 0 | return; |
157 | 0 | } |
158 | | |
159 | 131k | const std::map<string, FilterType>* kFilters = GetFilters(); |
160 | 131k | DCHECK(kFilters); |
161 | 131k | vector<string> filter_names = strings::Split(filter_spec, ","); |
162 | | |
163 | 131k | vector<const FilterType*> filters; |
164 | 131k | filters.reserve(filter_names.size()); |
165 | 659k | for (const auto &filter_name : filter_names) { |
166 | 18.4E | VLOG(4) << "filtering by " << filter_name; |
167 | 659k | auto filter_it = kFilters->find(filter_name); |
168 | 659k | if (filter_it != kFilters->end()659k ) { |
169 | 659k | filters.push_back(&filter_it->second); |
170 | 18.4E | } else { |
171 | 18.4E | LOG(ERROR) << "Unknown filter spec " << filter_name << " in filter spec " |
172 | 18.4E | << filter_spec; |
173 | 18.4E | } |
174 | 659k | } |
175 | | |
176 | 131k | vector<vector<IpAddress> > matches(filters.size()); |
177 | 162k | for (const auto& address : *addresses) { |
178 | 266k | for (size_t i = 0; i < filters.size(); ++i103k ) { |
179 | 266k | DCHECK(filters[i]); |
180 | 266k | if ((*filters[i])(address)) { |
181 | 162k | VLOG(3) << address.to_string() << " matches filter " << filter_names[i]0 ; |
182 | 162k | matches[i].push_back(address); |
183 | 162k | break; |
184 | 162k | } else { |
185 | 103k | VLOG(4) << address.to_string() << " does not match filter " |
186 | 15 | << filter_names[i]; |
187 | 103k | } |
188 | 266k | } |
189 | 162k | } |
190 | 131k | vector<IpAddress> results; |
191 | 659k | for (const auto& match : matches) { |
192 | 659k | results.insert(results.end(), match.begin(), match.end()); |
193 | 659k | } |
194 | 131k | addresses->swap(results); |
195 | 131k | } |
196 | | |
197 | 1.36k | bool InetAddress::operator<(const InetAddress& other) const { |
198 | 1.36k | return ToBytes() < other.ToBytes(); |
199 | 1.36k | } |
200 | | |
201 | 0 | bool InetAddress::isV4() const { |
202 | 0 | DCHECK(!boost_addr_.is_unspecified()); |
203 | 0 | return boost_addr_.is_v4(); |
204 | 0 | } |
205 | | |
206 | 0 | bool InetAddress::isV6() const { |
207 | 0 | DCHECK(!boost_addr_.is_unspecified()); |
208 | 0 | return boost_addr_.is_v6(); |
209 | 0 | } |
210 | | |
211 | | } // namespace yb |