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00012 #include "../../stdafx.h"
00013
00014 #ifdef ENABLE_NETWORK
00015
00016 #include "address.h"
00017 #include "../../debug.h"
00018
00024 const char *NetworkAddress::GetHostname()
00025 {
00026 if (StrEmpty(this->hostname) && this->address.ss_family != AF_UNSPEC) {
00027 assert(this->address_length != 0);
00028 getnameinfo((struct sockaddr *)&this->address, this->address_length, this->hostname, sizeof(this->hostname), NULL, 0, NI_NUMERICHOST);
00029 }
00030 return this->hostname;
00031 }
00032
00037 uint16 NetworkAddress::GetPort() const
00038 {
00039 switch (this->address.ss_family) {
00040 case AF_UNSPEC:
00041 case AF_INET:
00042 return ntohs(((struct sockaddr_in *)&this->address)->sin_port);
00043
00044 case AF_INET6:
00045 return ntohs(((struct sockaddr_in6 *)&this->address)->sin6_port);
00046
00047 default:
00048 NOT_REACHED();
00049 }
00050 }
00051
00056 void NetworkAddress::SetPort(uint16 port)
00057 {
00058 switch (this->address.ss_family) {
00059 case AF_UNSPEC:
00060 case AF_INET:
00061 ((struct sockaddr_in*)&this->address)->sin_port = htons(port);
00062 break;
00063
00064 case AF_INET6:
00065 ((struct sockaddr_in6*)&this->address)->sin6_port = htons(port);
00066 break;
00067
00068 default:
00069 NOT_REACHED();
00070 }
00071 }
00072
00079 void NetworkAddress::GetAddressAsString(char *buffer, const char *last, bool with_family)
00080 {
00081 if (this->GetAddress()->ss_family == AF_INET6) buffer = strecpy(buffer, "[", last);
00082 buffer = strecpy(buffer, this->GetHostname(), last);
00083 if (this->GetAddress()->ss_family == AF_INET6) buffer = strecpy(buffer, "]", last);
00084 buffer += seprintf(buffer, last, ":%d", this->GetPort());
00085
00086 if (with_family) {
00087 char family;
00088 switch (this->address.ss_family) {
00089 case AF_INET: family = '4'; break;
00090 case AF_INET6: family = '6'; break;
00091 default: family = '?'; break;
00092 }
00093 seprintf(buffer, last, " (IPv%c)", family);
00094 }
00095 }
00096
00103 const char *NetworkAddress::GetAddressAsString(bool with_family)
00104 {
00105
00106 static char buf[NETWORK_HOSTNAME_LENGTH + 6 + 7];
00107 this->GetAddressAsString(buf, lastof(buf), with_family);
00108 return buf;
00109 }
00110
00116 static SOCKET ResolveLoopProc(addrinfo *runp)
00117 {
00118
00119 return !INVALID_SOCKET;
00120 }
00121
00126 const sockaddr_storage *NetworkAddress::GetAddress()
00127 {
00128 if (!this->IsResolved()) {
00129
00130
00131
00132
00133
00134 this->Resolve(this->address.ss_family, SOCK_STREAM, AI_ADDRCONFIG, NULL, ResolveLoopProc);
00135 }
00136 return &this->address;
00137 }
00138
00144 bool NetworkAddress::IsFamily(int family)
00145 {
00146 if (!this->IsResolved()) {
00147 this->Resolve(family, SOCK_STREAM, AI_ADDRCONFIG, NULL, ResolveLoopProc);
00148 }
00149 return this->address.ss_family == family;
00150 }
00151
00158 bool NetworkAddress::IsInNetmask(char *netmask)
00159 {
00160
00161 if (!this->IsResolved()) this->GetAddress();
00162
00163 int cidr = this->address.ss_family == AF_INET ? 32 : 128;
00164
00165 NetworkAddress mask_address;
00166
00167
00168 char *chr_cidr = strchr(netmask, '/');
00169 if (chr_cidr != NULL) {
00170 int tmp_cidr = atoi(chr_cidr + 1);
00171
00172
00173 if (tmp_cidr > 0 || tmp_cidr < cidr) cidr = tmp_cidr;
00174
00175
00176 *chr_cidr = '\0';
00177 mask_address = NetworkAddress(netmask, 0, this->address.ss_family);
00178 *chr_cidr = '/';
00179 } else {
00180 mask_address = NetworkAddress(netmask, 0, this->address.ss_family);
00181 }
00182
00183 if (mask_address.GetAddressLength() == 0) return false;
00184
00185 uint32 *ip;
00186 uint32 *mask;
00187 switch (this->address.ss_family) {
00188 case AF_INET:
00189 ip = (uint32*)&((struct sockaddr_in*)&this->address)->sin_addr.s_addr;
00190 mask = (uint32*)&((struct sockaddr_in*)&mask_address.address)->sin_addr.s_addr;
00191 break;
00192
00193 case AF_INET6:
00194 ip = (uint32*)&((struct sockaddr_in6*)&this->address)->sin6_addr;
00195 mask = (uint32*)&((struct sockaddr_in6*)&mask_address.address)->sin6_addr;
00196 break;
00197
00198 default:
00199 NOT_REACHED();
00200 }
00201
00202 while (cidr > 0) {
00203 uint32 msk = cidr >= 32 ? (uint32)-1 : htonl(-(1 << (32 - cidr)));
00204 if ((*mask++ & msk) != (*ip++ & msk)) return false;
00205
00206 cidr -= 32;
00207 }
00208
00209 return true;
00210 }
00211
00221 SOCKET NetworkAddress::Resolve(int family, int socktype, int flags, SocketList *sockets, LoopProc func)
00222 {
00223 struct addrinfo *ai;
00224 struct addrinfo hints;
00225 memset(&hints, 0, sizeof (hints));
00226 hints.ai_family = family;
00227 hints.ai_flags = flags;
00228 hints.ai_socktype = socktype;
00229
00230
00231 char port_name[6];
00232 seprintf(port_name, lastof(port_name), "%u", this->GetPort());
00233
00234 bool reset_hostname = false;
00235
00236
00237
00238 if (StrEmpty(this->hostname) && this->address_length == 0 && this->GetPort() == 0) {
00239 reset_hostname = true;
00240 int fam = this->address.ss_family;
00241 if (fam == AF_UNSPEC) fam = family;
00242 strecpy(this->hostname, fam == AF_INET ? "0.0.0.0" : "::", lastof(this->hostname));
00243 }
00244
00245 int e = getaddrinfo(StrEmpty(this->hostname) ? NULL : this->hostname, port_name, &hints, &ai);
00246
00247 if (reset_hostname) strecpy(this->hostname, "", lastof(this->hostname));
00248
00249 if (e != 0) {
00250 if (func != ResolveLoopProc) {
00251 DEBUG(net, 0, "getaddrinfo for hostname \"%s\", port %s, address family %s and socket type %s failed: %s",
00252 this->hostname, port_name, AddressFamilyAsString(family), SocketTypeAsString(socktype), FS2OTTD(gai_strerror(e)));
00253 }
00254 return INVALID_SOCKET;
00255 }
00256
00257 SOCKET sock = INVALID_SOCKET;
00258 for (struct addrinfo *runp = ai; runp != NULL; runp = runp->ai_next) {
00259
00260
00261
00262 if (sockets != NULL) {
00263 NetworkAddress address(runp->ai_addr, (int)runp->ai_addrlen);
00264 if (sockets->Contains(address)) continue;
00265 }
00266 sock = func(runp);
00267 if (sock == INVALID_SOCKET) continue;
00268
00269 if (sockets == NULL) {
00270 this->address_length = (int)runp->ai_addrlen;
00271 assert(sizeof(this->address) >= runp->ai_addrlen);
00272 memcpy(&this->address, runp->ai_addr, runp->ai_addrlen);
00273 break;
00274 }
00275
00276 NetworkAddress addr(runp->ai_addr, (int)runp->ai_addrlen);
00277 (*sockets)[addr] = sock;
00278 sock = INVALID_SOCKET;
00279 }
00280 freeaddrinfo (ai);
00281
00282 return sock;
00283 }
00284
00290 static SOCKET ConnectLoopProc(addrinfo *runp)
00291 {
00292 const char *type = NetworkAddress::SocketTypeAsString(runp->ai_socktype);
00293 const char *family = NetworkAddress::AddressFamilyAsString(runp->ai_family);
00294 const char *address = NetworkAddress(runp->ai_addr, (int)runp->ai_addrlen).GetAddressAsString();
00295
00296 SOCKET sock = socket(runp->ai_family, runp->ai_socktype, runp->ai_protocol);
00297 if (sock == INVALID_SOCKET) {
00298 DEBUG(net, 1, "[%s] could not create %s socket: %s", type, family, strerror(errno));
00299 return INVALID_SOCKET;
00300 }
00301
00302 if (!SetNoDelay(sock)) DEBUG(net, 1, "[%s] setting TCP_NODELAY failed", type);
00303
00304 if (connect(sock, runp->ai_addr, (int)runp->ai_addrlen) != 0) {
00305 DEBUG(net, 1, "[%s] could not connect %s socket: %s", type, family, strerror(errno));
00306 closesocket(sock);
00307 return INVALID_SOCKET;
00308 }
00309
00310
00311 if (!SetNonBlocking(sock)) DEBUG(net, 0, "[%s] setting non-blocking mode failed", type);
00312
00313 DEBUG(net, 1, "[%s] connected to %s", type, address);
00314
00315 return sock;
00316 }
00317
00322 SOCKET NetworkAddress::Connect()
00323 {
00324 DEBUG(net, 1, "Connecting to %s", this->GetAddressAsString());
00325
00326 return this->Resolve(AF_UNSPEC, SOCK_STREAM, AI_ADDRCONFIG, NULL, ConnectLoopProc);
00327 }
00328
00334 static SOCKET ListenLoopProc(addrinfo *runp)
00335 {
00336 const char *type = NetworkAddress::SocketTypeAsString(runp->ai_socktype);
00337 const char *family = NetworkAddress::AddressFamilyAsString(runp->ai_family);
00338 const char *address = NetworkAddress(runp->ai_addr, (int)runp->ai_addrlen).GetAddressAsString();
00339
00340 SOCKET sock = socket(runp->ai_family, runp->ai_socktype, runp->ai_protocol);
00341 if (sock == INVALID_SOCKET) {
00342 DEBUG(net, 0, "[%s] could not create %s socket on port %s: %s", type, family, address, strerror(errno));
00343 return INVALID_SOCKET;
00344 }
00345
00346 if (runp->ai_socktype == SOCK_STREAM && !SetNoDelay(sock)) {
00347 DEBUG(net, 3, "[%s] setting TCP_NODELAY failed for port %s", type, address);
00348 }
00349
00350 int on = 1;
00351
00352 if (setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (const char*)&on, sizeof(on)) == -1) {
00353 DEBUG(net, 3, "[%s] could not set reusable %s sockets for port %s: %s", type, family, address, strerror(errno));
00354 }
00355
00356 if (runp->ai_family == AF_INET6 &&
00357 setsockopt(sock, IPPROTO_IPV6, IPV6_V6ONLY, (const char*)&on, sizeof(on)) == -1) {
00358 DEBUG(net, 3, "[%s] could not disable IPv4 over IPv6 on port %s: %s", type, address, strerror(errno));
00359 }
00360
00361 if (bind(sock, runp->ai_addr, (int)runp->ai_addrlen) != 0) {
00362 DEBUG(net, 1, "[%s] could not bind on %s port %s: %s", type, family, address, strerror(errno));
00363 closesocket(sock);
00364 return INVALID_SOCKET;
00365 }
00366
00367 if (runp->ai_socktype != SOCK_DGRAM && listen(sock, 1) != 0) {
00368 DEBUG(net, 1, "[%s] could not listen at %s port %s: %s", type, family, address, strerror(errno));
00369 closesocket(sock);
00370 return INVALID_SOCKET;
00371 }
00372
00373
00374 if (!SetNonBlocking(sock)) DEBUG(net, 0, "[%s] setting non-blocking mode failed for %s port %s", type, family, address);
00375
00376 DEBUG(net, 1, "[%s] listening on %s port %s", type, family, address);
00377 return sock;
00378 }
00379
00385 void NetworkAddress::Listen(int socktype, SocketList *sockets)
00386 {
00387 assert(sockets != NULL);
00388
00389
00390
00391
00392 if (this->address_length == 0 && this->address.ss_family == AF_UNSPEC &&
00393 StrEmpty(this->hostname) && this->GetPort() == 0) {
00394 this->Resolve(AF_INET, socktype, AI_ADDRCONFIG | AI_PASSIVE, sockets, ListenLoopProc);
00395 this->Resolve(AF_INET6, socktype, AI_ADDRCONFIG | AI_PASSIVE, sockets, ListenLoopProc);
00396 } else {
00397 this->Resolve(AF_UNSPEC, socktype, AI_ADDRCONFIG | AI_PASSIVE, sockets, ListenLoopProc);
00398 }
00399 }
00400
00407 const char *NetworkAddress::SocketTypeAsString(int socktype)
00408 {
00409 switch (socktype) {
00410 case SOCK_STREAM: return "tcp";
00411 case SOCK_DGRAM: return "udp";
00412 default: return "unsupported";
00413 }
00414 }
00415
00422 const char *NetworkAddress::AddressFamilyAsString(int family)
00423 {
00424 switch (family) {
00425 case AF_UNSPEC: return "either IPv4 or IPv6";
00426 case AF_INET: return "IPv4";
00427 case AF_INET6: return "IPv6";
00428 default: return "unsupported";
00429 }
00430 }
00431
00432 #endif