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| 1 /* | |
| 2 * Copyright 2015 The WebRTC Project Authors. All rights reserved. | |
| 3 * | |
| 4 * Use of this source code is governed by a BSD-style license | |
| 5 * that can be found in the LICENSE file in the root of the source | |
| 6 * tree. An additional intellectual property rights grant can be found | |
| 7 * in the file PATENTS. All contributing project authors may | |
| 8 * be found in the AUTHORS file in the root of the source tree. | |
| 9 */ | |
| 10 | |
| 11 #include <net/if.h> | |
| 12 #include <sys/ioctl.h> | |
| 13 #include <unistd.h> | |
| 14 | |
| 15 #include "webrtc/base/checks.h" | |
| 16 #include "webrtc/base/ifaddrs_converter.h" | |
| 17 #include "webrtc/base/logging.h" | |
| 18 #include "webrtc/base/scoped_ptr.h" | |
| 19 | |
| 20 #if !defined(WEBRTC_IOS) | |
| 21 #include <net/if_media.h> | |
| 22 #include <netinet/in_var.h> | |
| 23 #else // WEBRTC_IOS | |
| 24 #define SCOPE6_ID_MAX 16 | |
| 25 | |
| 26 struct in6_addrlifetime { | |
| 27 time_t ia6t_expire; /* valid lifetime expiration time */ | |
| 28 time_t ia6t_preferred; /* preferred lifetime expiration time */ | |
| 29 u_int32_t ia6t_vltime; /* valid lifetime */ | |
| 30 u_int32_t ia6t_pltime; /* prefix lifetime */ | |
| 31 }; | |
| 32 | |
| 33 struct in6_ifstat { | |
| 34 u_quad_t ifs6_in_receive; /* # of total input datagram */ | |
| 35 u_quad_t ifs6_in_hdrerr; /* # of datagrams with invalid hdr */ | |
| 36 u_quad_t ifs6_in_toobig; /* # of datagrams exceeded MTU */ | |
| 37 u_quad_t ifs6_in_noroute; /* # of datagrams with no route */ | |
| 38 u_quad_t ifs6_in_addrerr; /* # of datagrams with invalid dst */ | |
| 39 u_quad_t ifs6_in_protounknown; /* # of datagrams with unknown proto */ | |
| 40 /* NOTE: increment on final dst if */ | |
| 41 u_quad_t ifs6_in_truncated; /* # of truncated datagrams */ | |
| 42 u_quad_t ifs6_in_discard; /* # of discarded datagrams */ | |
| 43 /* NOTE: fragment timeout is not here */ | |
| 44 u_quad_t ifs6_in_deliver; /* # of datagrams delivered to ULP */ | |
| 45 /* NOTE: increment on final dst if */ | |
| 46 u_quad_t ifs6_out_forward; /* # of datagrams forwarded */ | |
| 47 /* NOTE: increment on outgoing if */ | |
| 48 u_quad_t ifs6_out_request; /* # of outgoing datagrams from ULP */ | |
| 49 /* NOTE: does not include forwrads */ | |
| 50 u_quad_t ifs6_out_discard; /* # of discarded datagrams */ | |
| 51 u_quad_t ifs6_out_fragok; /* # of datagrams fragmented */ | |
| 52 u_quad_t ifs6_out_fragfail; /* # of datagrams failed on fragment */ | |
| 53 u_quad_t ifs6_out_fragcreat; /* # of fragment datagrams */ | |
| 54 /* NOTE: this is # after fragment */ | |
| 55 u_quad_t ifs6_reass_reqd; /* # of incoming fragmented packets */ | |
| 56 /* NOTE: increment on final dst if */ | |
| 57 u_quad_t ifs6_reass_ok; /* # of reassembled packets */ | |
| 58 /* NOTE: this is # after reass */ | |
| 59 /* NOTE: increment on final dst if */ | |
| 60 u_quad_t ifs6_reass_fail; /* # of reass failures */ | |
| 61 /* NOTE: may not be packet count */ | |
| 62 /* NOTE: increment on final dst if */ | |
| 63 u_quad_t ifs6_in_mcast; /* # of inbound multicast datagrams */ | |
| 64 u_quad_t ifs6_out_mcast; /* # of outbound multicast datagrams */ | |
| 65 }; | |
| 66 struct icmp6_ifstat { | |
| 67 /* | |
| 68 * Input statistics | |
| 69 */ | |
| 70 /* ipv6IfIcmpInMsgs, total # of input messages */ | |
| 71 u_quad_t ifs6_in_msg; | |
| 72 /* ipv6IfIcmpInErrors, # of input error messages */ | |
| 73 u_quad_t ifs6_in_error; | |
| 74 /* ipv6IfIcmpInDestUnreachs, # of input dest unreach errors */ | |
| 75 u_quad_t ifs6_in_dstunreach; | |
| 76 /* ipv6IfIcmpInAdminProhibs, # of input admin. prohibited errs */ | |
| 77 u_quad_t ifs6_in_adminprohib; | |
| 78 /* ipv6IfIcmpInTimeExcds, # of input time exceeded errors */ | |
| 79 u_quad_t ifs6_in_timeexceed; | |
| 80 /* ipv6IfIcmpInParmProblems, # of input parameter problem errors */ | |
| 81 u_quad_t ifs6_in_paramprob; | |
| 82 /* ipv6IfIcmpInPktTooBigs, # of input packet too big errors */ | |
| 83 u_quad_t ifs6_in_pkttoobig; | |
| 84 /* ipv6IfIcmpInEchos, # of input echo requests */ | |
| 85 u_quad_t ifs6_in_echo; | |
| 86 /* ipv6IfIcmpInEchoReplies, # of input echo replies */ | |
| 87 u_quad_t ifs6_in_echoreply; | |
| 88 /* ipv6IfIcmpInRouterSolicits, # of input router solicitations */ | |
| 89 u_quad_t ifs6_in_routersolicit; | |
| 90 /* ipv6IfIcmpInRouterAdvertisements, # of input router advertisements */ | |
| 91 u_quad_t ifs6_in_routeradvert; | |
| 92 /* ipv6IfIcmpInNeighborSolicits, # of input neighbor solicitations */ | |
| 93 u_quad_t ifs6_in_neighborsolicit; | |
| 94 /* ipv6IfIcmpInNeighborAdvertisements, # of input neighbor advs. */ | |
| 95 u_quad_t ifs6_in_neighboradvert; | |
| 96 /* ipv6IfIcmpInRedirects, # of input redirects */ | |
| 97 u_quad_t ifs6_in_redirect; | |
| 98 /* ipv6IfIcmpInGroupMembQueries, # of input MLD queries */ | |
| 99 u_quad_t ifs6_in_mldquery; | |
| 100 /* ipv6IfIcmpInGroupMembResponses, # of input MLD reports */ | |
| 101 u_quad_t ifs6_in_mldreport; | |
| 102 /* ipv6IfIcmpInGroupMembReductions, # of input MLD done */ | |
| 103 u_quad_t ifs6_in_mlddone; | |
| 104 | |
| 105 /* | |
| 106 * Output statistics. We should solve unresolved routing problem... | |
| 107 */ | |
| 108 /* ipv6IfIcmpOutMsgs, total # of output messages */ | |
| 109 u_quad_t ifs6_out_msg; | |
| 110 /* ipv6IfIcmpOutErrors, # of output error messages */ | |
| 111 u_quad_t ifs6_out_error; | |
| 112 /* ipv6IfIcmpOutDestUnreachs, # of output dest unreach errors */ | |
| 113 u_quad_t ifs6_out_dstunreach; | |
| 114 /* ipv6IfIcmpOutAdminProhibs, # of output admin. prohibited errs */ | |
| 115 u_quad_t ifs6_out_adminprohib; | |
| 116 /* ipv6IfIcmpOutTimeExcds, # of output time exceeded errors */ | |
| 117 u_quad_t ifs6_out_timeexceed; | |
| 118 /* ipv6IfIcmpOutParmProblems, # of output parameter problem errors */ | |
| 119 u_quad_t ifs6_out_paramprob; | |
| 120 /* ipv6IfIcmpOutPktTooBigs, # of output packet too big errors */ | |
| 121 u_quad_t ifs6_out_pkttoobig; | |
| 122 /* ipv6IfIcmpOutEchos, # of output echo requests */ | |
| 123 u_quad_t ifs6_out_echo; | |
| 124 /* ipv6IfIcmpOutEchoReplies, # of output echo replies */ | |
| 125 u_quad_t ifs6_out_echoreply; | |
| 126 /* ipv6IfIcmpOutRouterSolicits, # of output router solicitations */ | |
| 127 u_quad_t ifs6_out_routersolicit; | |
| 128 /* ipv6IfIcmpOutRouterAdvertisements, # of output router advs. */ | |
| 129 u_quad_t ifs6_out_routeradvert; | |
| 130 /* ipv6IfIcmpOutNeighborSolicits, # of output neighbor solicitations */ | |
| 131 u_quad_t ifs6_out_neighborsolicit; | |
| 132 /* ipv6IfIcmpOutNeighborAdvertisements, # of output neighbor advs. */ | |
| 133 u_quad_t ifs6_out_neighboradvert; | |
| 134 /* ipv6IfIcmpOutRedirects, # of output redirects */ | |
| 135 u_quad_t ifs6_out_redirect; | |
| 136 /* ipv6IfIcmpOutGroupMembQueries, # of output MLD queries */ | |
| 137 u_quad_t ifs6_out_mldquery; | |
| 138 /* ipv6IfIcmpOutGroupMembResponses, # of output MLD reports */ | |
| 139 u_quad_t ifs6_out_mldreport; | |
| 140 /* ipv6IfIcmpOutGroupMembReductions, # of output MLD done */ | |
| 141 u_quad_t ifs6_out_mlddone; | |
| 142 }; | |
| 143 | |
| 144 struct in6_ifreq { | |
| 145 char ifr_name[IFNAMSIZ]; | |
| 146 union { | |
| 147 struct sockaddr_in6 ifru_addr; | |
| 148 struct sockaddr_in6 ifru_dstaddr; | |
| 149 int ifru_flags; | |
| 150 int ifru_flags6; | |
| 151 int ifru_metric; | |
| 152 int ifru_intval; | |
| 153 caddr_t ifru_data; | |
| 154 struct in6_addrlifetime ifru_lifetime; | |
| 155 struct in6_ifstat ifru_stat; | |
| 156 struct icmp6_ifstat ifru_icmp6stat; | |
| 157 u_int32_t ifru_scope_id[SCOPE6_ID_MAX]; | |
| 158 } ifr_ifru; | |
| 159 }; | |
| 160 | |
| 161 #define SIOCGIFAFLAG_IN6 _IOWR('i', 73, struct in6_ifreq) | |
| 162 | |
| 163 #define IN6_IFF_ANYCAST 0x0001 /* anycast address */ | |
| 164 #define IN6_IFF_TENTATIVE 0x0002 /* tentative address */ | |
| 165 #define IN6_IFF_DUPLICATED 0x0004 /* DAD detected duplicate */ | |
| 166 #define IN6_IFF_DETACHED 0x0008 /* may be detached from the link */ | |
| 167 #define IN6_IFF_DEPRECATED 0x0010 /* deprecated address */ | |
| 168 #define IN6_IFF_TEMPORARY 0x0080 /* temporary (anonymous) address. */ | |
| 169 | |
| 170 #endif // WEBRTC_IOS | |
| 171 | |
| 172 namespace rtc { | |
| 173 | |
| 174 namespace { | |
| 175 | |
| 176 class IPv6AttributesGetter { | |
| 177 public: | |
| 178 IPv6AttributesGetter(); | |
| 179 virtual ~IPv6AttributesGetter(); | |
| 180 bool IsInitialized() const; | |
| 181 bool GetIPAttributes(const char* ifname, | |
| 182 const sockaddr* sock_addr, | |
| 183 int* native_attributes); | |
| 184 | |
| 185 private: | |
| 186 // on MAC or IOS, we have to use ioctl with a socket to query an IPv6 | |
| 187 // interface's attribute. | |
| 188 int ioctl_socket_; | |
| 189 }; | |
| 190 | |
| 191 IPv6AttributesGetter::IPv6AttributesGetter() | |
| 192 : ioctl_socket_( | |
| 193 socket(AF_INET6, SOCK_DGRAM, 0 /* unspecified protocol */)) { | |
| 194 RTC_DCHECK_GE(ioctl_socket_, 0); | |
| 195 } | |
| 196 | |
| 197 bool IPv6AttributesGetter::IsInitialized() const { | |
| 198 return ioctl_socket_ >= 0; | |
| 199 } | |
| 200 | |
| 201 IPv6AttributesGetter::~IPv6AttributesGetter() { | |
| 202 if (!IsInitialized()) { | |
| 203 return; | |
| 204 } | |
| 205 close(ioctl_socket_); | |
| 206 } | |
| 207 | |
| 208 bool IPv6AttributesGetter::GetIPAttributes(const char* ifname, | |
| 209 const sockaddr* sock_addr, | |
| 210 int* native_attributes) { | |
| 211 if (!IsInitialized()) { | |
| 212 return false; | |
| 213 } | |
| 214 | |
| 215 struct in6_ifreq ifr = {}; | |
| 216 strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name) - 1); | |
| 217 memcpy(&ifr.ifr_ifru.ifru_addr, sock_addr, sock_addr->sa_len); | |
| 218 int rv = ioctl(ioctl_socket_, SIOCGIFAFLAG_IN6, &ifr); | |
| 219 if (rv >= 0) { | |
| 220 *native_attributes = ifr.ifr_ifru.ifru_flags; | |
| 221 } else { | |
| 222 LOG(LS_ERROR) << "ioctl returns " << errno; | |
| 223 } | |
| 224 return (rv >= 0); | |
| 225 } | |
| 226 | |
| 227 // Converts native IPv6 address attributes to net IPv6 address attributes. If | |
| 228 // it returns false, the IP address isn't suitable for one-to-one communications | |
| 229 // applications and should be ignored. | |
| 230 bool ConvertNativeToIPAttributes(int native_attributes, int* net_attributes) { | |
| 231 // For MacOSX, we disallow addresses with attributes IN6_IFF_ANYCASE, | |
| 232 // IN6_IFF_DUPLICATED, IN6_IFF_TENTATIVE, and IN6_IFF_DETACHED as these are | |
| 233 // still progressing through duplicated address detection (DAD) or are not | |
| 234 // suitable for one-to-one communication applications. | |
| 235 if (native_attributes & (IN6_IFF_ANYCAST | IN6_IFF_DUPLICATED | | |
| 236 IN6_IFF_TENTATIVE | IN6_IFF_DETACHED)) { | |
| 237 return false; | |
| 238 } | |
| 239 | |
| 240 if (native_attributes & IN6_IFF_TEMPORARY) { | |
| 241 *net_attributes |= IPV6_ADDRESS_FLAG_TEMPORARY; | |
| 242 } | |
| 243 | |
| 244 if (native_attributes & IN6_IFF_DEPRECATED) { | |
| 245 *net_attributes |= IPV6_ADDRESS_FLAG_DEPRECATED; | |
| 246 } | |
| 247 | |
| 248 return true; | |
| 249 } | |
| 250 | |
| 251 class MacIfAddrsConverter : public IfAddrsConverter { | |
| 252 public: | |
| 253 MacIfAddrsConverter() : ip_attribute_getter_(new IPv6AttributesGetter()) {} | |
| 254 ~MacIfAddrsConverter() override {} | |
| 255 | |
| 256 bool ConvertNativeAttributesToIPAttributes(const struct ifaddrs* interface, | |
| 257 int* ip_attributes) override { | |
| 258 int native_attributes; | |
| 259 if (!ip_attribute_getter_->GetIPAttributes( | |
| 260 interface->ifa_name, interface->ifa_addr, &native_attributes)) { | |
| 261 return false; | |
| 262 } | |
| 263 | |
| 264 if (!ConvertNativeToIPAttributes(native_attributes, ip_attributes)) { | |
| 265 return false; | |
| 266 } | |
| 267 | |
| 268 return true; | |
| 269 } | |
| 270 | |
| 271 private: | |
| 272 rtc::scoped_ptr<IPv6AttributesGetter> ip_attribute_getter_; | |
| 273 }; | |
| 274 | |
| 275 } // namespace | |
| 276 | |
| 277 IfAddrsConverter* CreateIfAddrsConverter() { | |
| 278 return new MacIfAddrsConverter(); | |
| 279 } | |
| 280 | |
| 281 } // namespace rtc | |
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Chromium Code Reviews
Issue 1547883002:
Revert "Enable IPv6 temporary address filtering on iOS." (Closed)
Base URL: https://chromium.googlesource.com/external/webrtc@master