J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 1997-2007 Sun Microsystems, Inc. All Rights Reserved. |
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 | * |
| 5 | * This code is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License version 2 only, as |
| 7 | * published by the Free Software Foundation. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun in the LICENSE file that accompanied this code. |
| 10 | * |
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 14 | * version 2 for more details (a copy is included in the LICENSE file that |
| 15 | * accompanied this code). |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License version |
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 20 | * |
| 21 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | |
| 26 | #include <windows.h> |
| 27 | #include <winsock2.h> |
| 28 | #include <ws2tcpip.h> |
| 29 | #include <ctype.h> |
| 30 | #include <stdio.h> |
| 31 | #include <stdlib.h> |
| 32 | #include <malloc.h> |
| 33 | #include <sys/types.h> |
| 34 | |
| 35 | #ifndef IPTOS_TOS_MASK |
| 36 | #define IPTOS_TOS_MASK 0x1e |
| 37 | #endif |
| 38 | #ifndef IPTOS_PREC_MASK |
| 39 | #define IPTOS_PREC_MASK 0xe0 |
| 40 | #endif |
| 41 | |
| 42 | #include "java_net_TwoStacksPlainDatagramSocketImpl.h" |
| 43 | #include "java_net_SocketOptions.h" |
| 44 | #include "java_net_NetworkInterface.h" |
| 45 | |
| 46 | #include "jvm.h" |
| 47 | #include "jni_util.h" |
| 48 | #include "net_util.h" |
| 49 | |
| 50 | #define IN_CLASSD(i) (((long)(i) & 0xf0000000) == 0xe0000000) |
| 51 | #define IN_MULTICAST(i) IN_CLASSD(i) |
| 52 | |
| 53 | /************************************************************************ |
| 54 | * TwoStacksPlainDatagramSocketImpl |
| 55 | */ |
| 56 | |
| 57 | static jfieldID IO_fd_fdID; |
| 58 | static jfieldID pdsi_trafficClassID; |
| 59 | jfieldID pdsi_fdID; |
| 60 | jfieldID pdsi_fd1ID; |
| 61 | jfieldID pdsi_fduseID; |
| 62 | jfieldID pdsi_lastfdID; |
| 63 | jfieldID pdsi_timeoutID; |
| 64 | |
| 65 | jfieldID pdsi_localPortID; |
| 66 | jfieldID pdsi_connected; |
| 67 | |
| 68 | static jclass ia4_clazz; |
| 69 | static jmethodID ia4_ctor; |
| 70 | |
| 71 | static CRITICAL_SECTION sizeCheckLock; |
| 72 | |
| 73 | /* Windows OS version is XP or better */ |
| 74 | static int xp_or_later = 0; |
| 75 | /* Windows OS version is Windows 2000 or better */ |
| 76 | static int w2k_or_later = 0; |
| 77 | |
| 78 | /* |
| 79 | * Notes about UDP/IPV6 on Windows (XP and 2003 server): |
| 80 | * |
| 81 | * fd always points to the IPv4 fd, and fd1 points to the IPv6 fd. |
| 82 | * Both fds are used when we bind to a wild-card address. When a specific |
| 83 | * address is used, only one of them is used. |
| 84 | */ |
| 85 | |
| 86 | /* |
| 87 | * Returns a java.lang.Integer based on 'i' |
| 88 | */ |
| 89 | jobject createInteger(JNIEnv *env, int i) { |
| 90 | static jclass i_class; |
| 91 | static jmethodID i_ctrID; |
| 92 | static jfieldID i_valueID; |
| 93 | |
| 94 | if (i_class == NULL) { |
| 95 | jclass c = (*env)->FindClass(env, "java/lang/Integer"); |
| 96 | CHECK_NULL_RETURN(c, NULL); |
| 97 | i_ctrID = (*env)->GetMethodID(env, c, "<init>", "(I)V"); |
| 98 | CHECK_NULL_RETURN(i_ctrID, NULL); |
| 99 | i_class = (*env)->NewGlobalRef(env, c); |
| 100 | CHECK_NULL_RETURN(i_class, NULL); |
| 101 | } |
| 102 | |
| 103 | return ( (*env)->NewObject(env, i_class, i_ctrID, i) ); |
| 104 | } |
| 105 | |
| 106 | /* |
| 107 | * Returns a java.lang.Boolean based on 'b' |
| 108 | */ |
| 109 | jobject createBoolean(JNIEnv *env, int b) { |
| 110 | static jclass b_class; |
| 111 | static jmethodID b_ctrID; |
| 112 | static jfieldID b_valueID; |
| 113 | |
| 114 | if (b_class == NULL) { |
| 115 | jclass c = (*env)->FindClass(env, "java/lang/Boolean"); |
| 116 | CHECK_NULL_RETURN(c, NULL); |
| 117 | b_ctrID = (*env)->GetMethodID(env, c, "<init>", "(Z)V"); |
| 118 | CHECK_NULL_RETURN(b_ctrID, NULL); |
| 119 | b_class = (*env)->NewGlobalRef(env, c); |
| 120 | CHECK_NULL_RETURN(b_class, NULL); |
| 121 | } |
| 122 | |
| 123 | return( (*env)->NewObject(env, b_class, b_ctrID, (jboolean)(b!=0)) ); |
| 124 | } |
| 125 | |
| 126 | |
| 127 | static int getFD(JNIEnv *env, jobject this) { |
| 128 | jobject fdObj = (*env)->GetObjectField(env, this, pdsi_fdID); |
| 129 | |
| 130 | if (fdObj == NULL) { |
| 131 | return -1; |
| 132 | } |
| 133 | return (*env)->GetIntField(env, fdObj, IO_fd_fdID); |
| 134 | } |
| 135 | |
| 136 | static int getFD1(JNIEnv *env, jobject this) { |
| 137 | jobject fdObj = (*env)->GetObjectField(env, this, pdsi_fd1ID); |
| 138 | |
| 139 | if (fdObj == NULL) { |
| 140 | return -1; |
| 141 | } |
| 142 | return (*env)->GetIntField(env, fdObj, IO_fd_fdID); |
| 143 | } |
| 144 | |
| 145 | /* |
| 146 | * This function returns JNI_TRUE if the datagram size exceeds the underlying |
| 147 | * provider's ability to send to the target address. The following OS |
| 148 | * oddies have been observed :- |
| 149 | * |
| 150 | * 1. On Windows 95/98 if we try to send a datagram > 12k to an application |
| 151 | * on the same machine then the send will fail silently. |
| 152 | * |
| 153 | * 2. On Windows ME if we try to send a datagram > supported by underlying |
| 154 | * provider then send will not return an error. |
| 155 | * |
| 156 | * 3. On Windows NT/2000 if we exceeds the maximum size then send will fail |
| 157 | * with WSAEADDRNOTAVAIL. |
| 158 | * |
| 159 | * 4. On Windows 95/98 if we exceed the maximum size when sending to |
| 160 | * another machine then WSAEINVAL is returned. |
| 161 | * |
| 162 | */ |
| 163 | jboolean exceedSizeLimit(JNIEnv *env, jint fd, jint addr, jint size) |
| 164 | { |
| 165 | #define DEFAULT_MSG_SIZE 65527 |
| 166 | static jboolean initDone; |
| 167 | static jboolean is95or98; |
| 168 | static int maxmsg; |
| 169 | |
| 170 | typedef struct _netaddr { /* Windows 95/98 only */ |
| 171 | unsigned long addr; |
| 172 | struct _netaddr *next; |
| 173 | } netaddr; |
| 174 | static netaddr *addrList; |
| 175 | netaddr *curr; |
| 176 | |
| 177 | /* |
| 178 | * First time we are called we must determine which OS this is and also |
| 179 | * get the maximum size supported by the underlying provider. |
| 180 | * |
| 181 | * In addition on 95/98 we must enumerate our IP addresses. |
| 182 | */ |
| 183 | if (!initDone) { |
| 184 | EnterCriticalSection(&sizeCheckLock); |
| 185 | |
| 186 | if (initDone) { |
| 187 | /* another thread got there first */ |
| 188 | LeaveCriticalSection(&sizeCheckLock); |
| 189 | |
| 190 | } else { |
| 191 | OSVERSIONINFO ver; |
| 192 | int len; |
| 193 | |
| 194 | /* |
| 195 | * Step 1: Determine which OS this is. |
| 196 | */ |
| 197 | ver.dwOSVersionInfoSize = sizeof(ver); |
| 198 | GetVersionEx(&ver); |
| 199 | |
| 200 | is95or98 = JNI_FALSE; |
| 201 | if (ver.dwPlatformId == VER_PLATFORM_WIN32_WINDOWS && |
| 202 | ver.dwMajorVersion == 4 && |
| 203 | (ver.dwMinorVersion == 0 || ver.dwMinorVersion == 10)) { |
| 204 | |
| 205 | is95or98 = JNI_TRUE; |
| 206 | } |
| 207 | |
| 208 | /* |
| 209 | * Step 2: Determine the maximum datagram supported by the |
| 210 | * underlying provider. On Windows 95 if winsock hasn't been |
| 211 | * upgraded (ie: unsupported configuration) then we assume |
| 212 | * the default 64k limit. |
| 213 | */ |
| 214 | len = sizeof(maxmsg); |
| 215 | if (NET_GetSockOpt(fd, SOL_SOCKET, SO_MAX_MSG_SIZE, (char *)&maxmsg, &len) < 0) { |
| 216 | maxmsg = DEFAULT_MSG_SIZE; |
| 217 | } |
| 218 | |
| 219 | /* |
| 220 | * Step 3: On Windows 95/98 then enumerate the IP addresses on |
| 221 | * this machine. This is necesary because we need to check if the |
| 222 | * datagram is being sent to an application on the same machine. |
| 223 | */ |
| 224 | if (is95or98) { |
| 225 | char hostname[255]; |
| 226 | struct hostent *hp; |
| 227 | |
| 228 | if (gethostname(hostname, sizeof(hostname)) == -1) { |
| 229 | LeaveCriticalSection(&sizeCheckLock); |
| 230 | JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException", "Unable to obtain hostname"); |
| 231 | return JNI_TRUE; |
| 232 | } |
| 233 | hp = (struct hostent *)gethostbyname(hostname); |
| 234 | if (hp != NULL) { |
| 235 | struct in_addr **addrp = (struct in_addr **) hp->h_addr_list; |
| 236 | |
| 237 | while (*addrp != (struct in_addr *) 0) { |
| 238 | curr = (netaddr *)malloc(sizeof(netaddr)); |
| 239 | if (curr == NULL) { |
| 240 | while (addrList != NULL) { |
| 241 | curr = addrList->next; |
| 242 | free(addrList); |
| 243 | addrList = curr; |
| 244 | } |
| 245 | LeaveCriticalSection(&sizeCheckLock); |
| 246 | JNU_ThrowOutOfMemoryError(env, "heap allocation failed"); |
| 247 | return JNI_TRUE; |
| 248 | } |
| 249 | curr->addr = htonl((*addrp)->S_un.S_addr); |
| 250 | curr->next = addrList; |
| 251 | addrList = curr; |
| 252 | addrp++; |
| 253 | } |
| 254 | } |
| 255 | } |
| 256 | |
| 257 | /* |
| 258 | * Step 4: initialization is done so set flag and unlock cs |
| 259 | */ |
| 260 | initDone = JNI_TRUE; |
| 261 | LeaveCriticalSection(&sizeCheckLock); |
| 262 | } |
| 263 | } |
| 264 | |
| 265 | /* |
| 266 | * Now examine the size of the datagram :- |
| 267 | * |
| 268 | * (a) If exceeds size of service provider return 'false' to indicate that |
| 269 | * we exceed the limit. |
| 270 | * (b) If not 95/98 then return 'true' to indicate that the size is okay. |
| 271 | * (c) On 95/98 if the size is <12k we are okay. |
| 272 | * (d) On 95/98 if size > 12k then check if the destination is the current |
| 273 | * machine. |
| 274 | */ |
| 275 | if (size > maxmsg) { /* step (a) */ |
| 276 | return JNI_TRUE; |
| 277 | } |
| 278 | if (!is95or98) { /* step (b) */ |
| 279 | return JNI_FALSE; |
| 280 | } |
| 281 | if (size <= 12280) { /* step (c) */ |
| 282 | return JNI_FALSE; |
| 283 | } |
| 284 | |
| 285 | /* step (d) */ |
| 286 | |
| 287 | if ((addr & 0x7f000000) == 0x7f000000) { |
| 288 | return JNI_TRUE; |
| 289 | } |
| 290 | curr = addrList; |
| 291 | while (curr != NULL) { |
| 292 | if (curr->addr == addr) { |
| 293 | return JNI_TRUE; |
| 294 | } |
| 295 | curr = curr->next; |
| 296 | } |
| 297 | return JNI_FALSE; |
| 298 | } |
| 299 | |
| 300 | /* |
| 301 | * Return JNI_TRUE if this Windows edition supports ICMP Port Unreachable |
| 302 | */ |
| 303 | __inline static jboolean supportPortUnreachable() { |
| 304 | static jboolean initDone; |
| 305 | static jboolean portUnreachableSupported; |
| 306 | |
| 307 | if (!initDone) { |
| 308 | OSVERSIONINFO ver; |
| 309 | ver.dwOSVersionInfoSize = sizeof(ver); |
| 310 | GetVersionEx(&ver); |
| 311 | if (ver.dwPlatformId == VER_PLATFORM_WIN32_NT && ver.dwMajorVersion >= 5) { |
| 312 | portUnreachableSupported = JNI_TRUE; |
| 313 | } else { |
| 314 | portUnreachableSupported = JNI_FALSE; |
| 315 | } |
| 316 | initDone = JNI_TRUE; |
| 317 | } |
| 318 | return portUnreachableSupported; |
| 319 | } |
| 320 | |
| 321 | /* |
| 322 | * This function "purges" all outstanding ICMP port unreachable packets |
| 323 | * outstanding on a socket and returns JNI_TRUE if any ICMP messages |
| 324 | * have been purged. The rational for purging is to emulate normal BSD |
| 325 | * behaviour whereby receiving a "connection reset" status resets the |
| 326 | * socket. |
| 327 | */ |
| 328 | static jboolean purgeOutstandingICMP(JNIEnv *env, jobject this, jint fd) |
| 329 | { |
| 330 | jboolean got_icmp = JNI_FALSE; |
| 331 | char buf[1]; |
| 332 | fd_set tbl; |
| 333 | struct timeval t = { 0, 0 }; |
| 334 | struct sockaddr_in rmtaddr; |
| 335 | int addrlen = sizeof(rmtaddr); |
| 336 | |
| 337 | /* |
| 338 | * A no-op if this OS doesn't support it. |
| 339 | */ |
| 340 | if (!supportPortUnreachable()) { |
| 341 | return JNI_FALSE; |
| 342 | } |
| 343 | |
| 344 | /* |
| 345 | * Peek at the queue to see if there is an ICMP port unreachable. If there |
| 346 | * is then receive it. |
| 347 | */ |
| 348 | FD_ZERO(&tbl); |
| 349 | FD_SET(fd, &tbl); |
| 350 | while(1) { |
| 351 | if (select(/*ignored*/fd+1, &tbl, 0, 0, &t) <= 0) { |
| 352 | break; |
| 353 | } |
| 354 | if (recvfrom(fd, buf, 1, MSG_PEEK, |
| 355 | (struct sockaddr *)&rmtaddr, &addrlen) != JVM_IO_ERR) { |
| 356 | break; |
| 357 | } |
| 358 | if (WSAGetLastError() != WSAECONNRESET) { |
| 359 | /* some other error - we don't care here */ |
| 360 | break; |
| 361 | } |
| 362 | |
| 363 | recvfrom(fd, buf, 1, 0, (struct sockaddr *)&rmtaddr, &addrlen); |
| 364 | got_icmp = JNI_TRUE; |
| 365 | } |
| 366 | |
| 367 | return got_icmp; |
| 368 | } |
| 369 | |
| 370 | |
| 371 | /* |
| 372 | * Class: java_net_TwoStacksPlainDatagramSocketImpl |
| 373 | * Method: init |
| 374 | * Signature: ()V |
| 375 | */ |
| 376 | JNIEXPORT void JNICALL |
| 377 | Java_java_net_TwoStacksPlainDatagramSocketImpl_init(JNIEnv *env, jclass cls) { |
| 378 | |
| 379 | OSVERSIONINFO ver; |
| 380 | int version; |
| 381 | ver.dwOSVersionInfoSize = sizeof(ver); |
| 382 | GetVersionEx(&ver); |
| 383 | |
| 384 | version = ver.dwMajorVersion * 10 + ver.dwMinorVersion; |
| 385 | xp_or_later = (ver.dwPlatformId == VER_PLATFORM_WIN32_NT) && (version >= 51); |
| 386 | w2k_or_later = (ver.dwPlatformId == VER_PLATFORM_WIN32_NT) && (version >= 50); |
| 387 | |
| 388 | /* get fieldIDs */ |
| 389 | pdsi_fdID = (*env)->GetFieldID(env, cls, "fd", "Ljava/io/FileDescriptor;"); |
| 390 | CHECK_NULL(pdsi_fdID); |
| 391 | pdsi_fd1ID = (*env)->GetFieldID(env, cls, "fd1", "Ljava/io/FileDescriptor;"); |
| 392 | CHECK_NULL(pdsi_fd1ID); |
| 393 | pdsi_timeoutID = (*env)->GetFieldID(env, cls, "timeout", "I"); |
| 394 | CHECK_NULL(pdsi_timeoutID); |
| 395 | pdsi_fduseID = (*env)->GetFieldID(env, cls, "fduse", "I"); |
| 396 | CHECK_NULL(pdsi_fduseID); |
| 397 | pdsi_lastfdID = (*env)->GetFieldID(env, cls, "lastfd", "I"); |
| 398 | CHECK_NULL(pdsi_lastfdID); |
| 399 | pdsi_trafficClassID = (*env)->GetFieldID(env, cls, "trafficClass", "I"); |
| 400 | CHECK_NULL(pdsi_trafficClassID); |
| 401 | pdsi_localPortID = (*env)->GetFieldID(env, cls, "localPort", "I"); |
| 402 | CHECK_NULL(pdsi_localPortID); |
| 403 | pdsi_connected = (*env)->GetFieldID(env, cls, "connected", "Z"); |
| 404 | CHECK_NULL(pdsi_connected); |
| 405 | |
| 406 | cls = (*env)->FindClass(env, "java/io/FileDescriptor"); |
| 407 | CHECK_NULL(cls); |
| 408 | IO_fd_fdID = NET_GetFileDescriptorID(env); |
| 409 | CHECK_NULL(IO_fd_fdID); |
| 410 | |
| 411 | ia4_clazz = (*env)->FindClass(env, "java/net/Inet4Address"); |
| 412 | CHECK_NULL(ia4_clazz); |
| 413 | ia4_clazz = (*env)->NewGlobalRef(env, ia4_clazz); |
| 414 | CHECK_NULL(ia4_clazz); |
| 415 | ia4_ctor = (*env)->GetMethodID(env, ia4_clazz, "<init>", "()V"); |
| 416 | CHECK_NULL(ia4_ctor); |
| 417 | |
| 418 | |
| 419 | InitializeCriticalSection(&sizeCheckLock); |
| 420 | } |
| 421 | |
| 422 | JNIEXPORT void JNICALL |
| 423 | Java_java_net_TwoStacksPlainDatagramSocketImpl_bind0(JNIEnv *env, jobject this, |
| 424 | jint port, jobject addressObj) { |
| 425 | jobject fdObj = (*env)->GetObjectField(env, this, pdsi_fdID); |
| 426 | jobject fd1Obj = (*env)->GetObjectField(env, this, pdsi_fd1ID); |
| 427 | |
| 428 | int fd, fd1, family; |
| 429 | int ipv6_supported = ipv6_available(); |
| 430 | |
| 431 | SOCKETADDRESS lcladdr; |
| 432 | int lcladdrlen; |
| 433 | int address; |
| 434 | |
| 435 | family = (*env)->GetIntField(env, addressObj, ia_familyID); |
| 436 | if (family == IPv6 && !ipv6_supported) { |
| 437 | JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException", |
| 438 | "Protocol family not supported"); |
| 439 | return; |
| 440 | } |
| 441 | |
| 442 | if (IS_NULL(fdObj) || (ipv6_supported && IS_NULL(fd1Obj))) { |
| 443 | JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException", "socket closed"); |
| 444 | return; |
| 445 | } else { |
| 446 | fd = (*env)->GetIntField(env, fdObj, IO_fd_fdID); |
| 447 | if (ipv6_supported) { |
| 448 | fd1 = (*env)->GetIntField(env, fd1Obj, IO_fd_fdID); |
| 449 | } |
| 450 | } |
| 451 | if (IS_NULL(addressObj)) { |
| 452 | JNU_ThrowNullPointerException(env, "argument address"); |
| 453 | return; |
| 454 | } else { |
| 455 | address = (*env)->GetIntField(env, addressObj, ia_addressID); |
| 456 | } |
| 457 | |
| 458 | if (NET_InetAddressToSockaddr(env, addressObj, port, (struct sockaddr *)&lcladdr, &lcladdrlen, JNI_FALSE) != 0) { |
| 459 | return; |
| 460 | } |
| 461 | |
| 462 | if (ipv6_supported) { |
| 463 | struct ipv6bind v6bind; |
| 464 | v6bind.addr = &lcladdr; |
| 465 | v6bind.ipv4_fd = fd; |
| 466 | v6bind.ipv6_fd = fd1; |
| 467 | if (NET_BindV6(&v6bind) != -1) { |
| 468 | /* check if the fds have changed */ |
| 469 | if (v6bind.ipv4_fd != fd) { |
| 470 | fd = v6bind.ipv4_fd; |
| 471 | if (fd == -1) { |
| 472 | /* socket is closed. */ |
| 473 | (*env)->SetObjectField(env, this, pdsi_fdID, NULL); |
| 474 | } else { |
| 475 | /* socket was re-created */ |
| 476 | (*env)->SetIntField(env, fdObj, IO_fd_fdID, fd); |
| 477 | } |
| 478 | } |
| 479 | if (v6bind.ipv6_fd != fd1) { |
| 480 | fd1 = v6bind.ipv6_fd; |
| 481 | if (fd1 == -1) { |
| 482 | /* socket is closed. */ |
| 483 | (*env)->SetObjectField(env, this, pdsi_fd1ID, NULL); |
| 484 | } else { |
| 485 | /* socket was re-created */ |
| 486 | (*env)->SetIntField(env, fd1Obj, IO_fd_fdID, fd1); |
| 487 | } |
| 488 | } |
| 489 | } else { |
| 490 | NET_ThrowCurrent (env, "Cannot bind"); |
| 491 | return; |
| 492 | } |
| 493 | } else { |
| 494 | if (bind(fd, (struct sockaddr *)&lcladdr, lcladdrlen) == -1) { |
| 495 | if (WSAGetLastError() == WSAEACCES) { |
| 496 | WSASetLastError(WSAEADDRINUSE); |
| 497 | } |
| 498 | NET_ThrowCurrent(env, "Cannot bind"); |
| 499 | return; |
| 500 | } |
| 501 | } |
| 502 | |
| 503 | if (port == 0) { |
| 504 | if (fd == -1) { |
| 505 | /* must be an IPV6 only socket. */ |
| 506 | fd = fd1; |
| 507 | } |
| 508 | if (getsockname(fd, (struct sockaddr *)&lcladdr, &lcladdrlen) == -1) { |
| 509 | NET_ThrowCurrent(env, "JVM_GetSockName"); |
| 510 | return; |
| 511 | } |
| 512 | port = ntohs((u_short) GET_PORT (&lcladdr)); |
| 513 | } |
| 514 | (*env)->SetIntField(env, this, pdsi_localPortID, port); |
| 515 | } |
| 516 | |
| 517 | |
| 518 | /* |
| 519 | * Class: java_net_TwoStacksPlainDatagramSocketImpl |
| 520 | * Method: connect0 |
| 521 | * Signature: (Ljava/net/InetAddress;I)V |
| 522 | */ |
| 523 | |
| 524 | JNIEXPORT void JNICALL |
| 525 | Java_java_net_TwoStacksPlainDatagramSocketImpl_connect0(JNIEnv *env, jobject this, |
| 526 | jobject address, jint port) { |
| 527 | /* The object's field */ |
| 528 | jobject fdObj = (*env)->GetObjectField(env, this, pdsi_fdID); |
| 529 | jobject fd1Obj = (*env)->GetObjectField(env, this, pdsi_fd1ID); |
| 530 | /* The fdObj'fd */ |
| 531 | jint fd=-1, fd1=-1, fdc; |
| 532 | /* The packetAddress address, family and port */ |
| 533 | jint addr, family; |
| 534 | SOCKETADDRESS rmtaddr; |
| 535 | int rmtaddrlen; |
| 536 | int ipv6_supported = ipv6_available(); |
| 537 | |
| 538 | if (IS_NULL(fdObj) && IS_NULL(fd1Obj)) { |
| 539 | JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException", |
| 540 | "Socket closed"); |
| 541 | return; |
| 542 | } |
| 543 | if (!IS_NULL(fdObj)) { |
| 544 | fd = (*env)->GetIntField(env, fdObj, IO_fd_fdID); |
| 545 | } |
| 546 | if (!IS_NULL(fd1Obj)) { |
| 547 | fd1 = (*env)->GetIntField(env, fd1Obj, IO_fd_fdID); |
| 548 | } |
| 549 | |
| 550 | if (IS_NULL(address)) { |
| 551 | JNU_ThrowNullPointerException(env, "address"); |
| 552 | return; |
| 553 | } |
| 554 | |
| 555 | addr = (*env)->GetIntField(env, address, ia_addressID); |
| 556 | |
| 557 | family = (*env)->GetIntField(env, address, ia_familyID); |
| 558 | if (family == IPv6 && !ipv6_supported) { |
| 559 | JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException", |
| 560 | "Protocol family not supported"); |
| 561 | return; |
| 562 | } |
| 563 | |
| 564 | fdc = family == IPv4? fd: fd1; |
| 565 | |
| 566 | if (xp_or_later) { |
| 567 | /* SIO_UDP_CONNRESET fixes a bug introduced in Windows 2000, which |
| 568 | * returns connection reset errors un connected UDP sockets (as well |
| 569 | * as connected sockets. The solution is to only enable this feature |
| 570 | * when the socket is connected |
| 571 | */ |
| 572 | DWORD x1, x2; /* ignored result codes */ |
| 573 | int res, t = TRUE; |
| 574 | res = WSAIoctl(fdc,SIO_UDP_CONNRESET,&t,sizeof(t),&x1,sizeof(x1),&x2,0,0); |
| 575 | } |
| 576 | |
| 577 | if (NET_InetAddressToSockaddr(env, address, port,(struct sockaddr *)&rmtaddr, &rmtaddrlen, JNI_FALSE) != 0) { |
| 578 | return; |
| 579 | } |
| 580 | |
| 581 | if (connect(fdc, (struct sockaddr *)&rmtaddr, sizeof(rmtaddr)) == -1) { |
| 582 | NET_ThrowCurrent(env, "connect"); |
| 583 | return; |
| 584 | } |
| 585 | } |
| 586 | |
| 587 | /* |
| 588 | * Class: java_net_TwoStacksPlainDatagramSocketImpl |
| 589 | * Method: disconnect0 |
| 590 | * Signature: ()V |
| 591 | */ |
| 592 | |
| 593 | JNIEXPORT void JNICALL |
| 594 | Java_java_net_TwoStacksPlainDatagramSocketImpl_disconnect0(JNIEnv *env, jobject this, jint family) { |
| 595 | /* The object's field */ |
| 596 | jobject fdObj; |
| 597 | /* The fdObj'fd */ |
| 598 | jint fd, len; |
| 599 | SOCKETADDRESS addr; |
| 600 | |
| 601 | if (family == IPv4) { |
| 602 | fdObj = (*env)->GetObjectField(env, this, pdsi_fdID); |
| 603 | len = sizeof (struct sockaddr_in); |
| 604 | } else { |
| 605 | fdObj = (*env)->GetObjectField(env, this, pdsi_fd1ID); |
| 606 | len = sizeof (struct SOCKADDR_IN6); |
| 607 | } |
| 608 | |
| 609 | if (IS_NULL(fdObj)) { |
| 610 | /* disconnect doesn't throw any exceptions */ |
| 611 | return; |
| 612 | } |
| 613 | fd = (*env)->GetIntField(env, fdObj, IO_fd_fdID); |
| 614 | |
| 615 | memset(&addr, 0, len); |
| 616 | connect(fd, (struct sockaddr *)&addr, len); |
| 617 | |
| 618 | /* |
| 619 | * use SIO_UDP_CONNRESET |
| 620 | * to disable ICMP port unreachable handling here. |
| 621 | */ |
| 622 | if (xp_or_later) { |
| 623 | DWORD x1, x2; /* ignored result codes */ |
| 624 | int t = FALSE; |
| 625 | WSAIoctl(fd,SIO_UDP_CONNRESET,&t,sizeof(t),&x1,sizeof(x1),&x2,0,0); |
| 626 | } |
| 627 | } |
| 628 | |
| 629 | /* |
| 630 | * Class: java_net_TwoStacksPlainDatagramSocketImpl |
| 631 | * Method: send |
| 632 | * Signature: (Ljava/net/DatagramPacket;)V |
| 633 | */ |
| 634 | JNIEXPORT void JNICALL |
| 635 | Java_java_net_TwoStacksPlainDatagramSocketImpl_send(JNIEnv *env, jobject this, |
| 636 | jobject packet) { |
| 637 | |
| 638 | char BUF[MAX_BUFFER_LEN]; |
| 639 | char *fullPacket; |
| 640 | jobject fdObj; |
| 641 | jint fd; |
| 642 | |
| 643 | jobject iaObj; |
| 644 | jint address; |
| 645 | jint family; |
| 646 | |
| 647 | jint packetBufferOffset, packetBufferLen, packetPort; |
| 648 | jbyteArray packetBuffer; |
| 649 | jboolean connected; |
| 650 | |
| 651 | SOCKETADDRESS rmtaddr; |
| 652 | SOCKETADDRESS *addrp = &rmtaddr; |
| 653 | int addrlen; |
| 654 | int x; /* DELETE ME */ |
| 655 | |
| 656 | |
| 657 | if (IS_NULL(packet)) { |
| 658 | JNU_ThrowNullPointerException(env, "null packet"); |
| 659 | return; |
| 660 | } |
| 661 | |
| 662 | iaObj = (*env)->GetObjectField(env, packet, dp_addressID); |
| 663 | |
| 664 | packetPort = (*env)->GetIntField(env, packet, dp_portID); |
| 665 | packetBufferOffset = (*env)->GetIntField(env, packet, dp_offsetID); |
| 666 | packetBuffer = (jbyteArray)(*env)->GetObjectField(env, packet, dp_bufID); |
| 667 | connected = (*env)->GetBooleanField(env, this, pdsi_connected); |
| 668 | |
| 669 | if (IS_NULL(iaObj) || IS_NULL(packetBuffer)) { |
| 670 | JNU_ThrowNullPointerException(env, "null address || null buffer"); |
| 671 | return; |
| 672 | } |
| 673 | |
| 674 | family = (*env)->GetIntField(env, iaObj, ia_familyID); |
| 675 | if (family == IPv4) { |
| 676 | fdObj = (*env)->GetObjectField(env, this, pdsi_fdID); |
| 677 | } else { |
| 678 | if (!ipv6_available()) { |
| 679 | JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException", |
| 680 | "Protocol not allowed"); |
| 681 | return; |
| 682 | } |
| 683 | fdObj = (*env)->GetObjectField(env, this, pdsi_fd1ID); |
| 684 | } |
| 685 | |
| 686 | if (IS_NULL(fdObj)) { |
| 687 | JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException", |
| 688 | "Socket closed"); |
| 689 | return; |
| 690 | } |
| 691 | fd = (*env)->GetIntField(env, fdObj, IO_fd_fdID); |
| 692 | |
| 693 | packetBufferLen = (*env)->GetIntField(env, packet, dp_lengthID); |
| 694 | |
| 695 | if (connected) { |
| 696 | addrp = 0; /* arg to JVM_Sendto () null in this case */ |
| 697 | addrlen = 0; |
| 698 | } else { |
| 699 | if (NET_InetAddressToSockaddr(env, iaObj, packetPort, (struct sockaddr *)&rmtaddr, &addrlen, JNI_FALSE) != 0) { |
| 700 | return; |
| 701 | } |
| 702 | } |
| 703 | |
| 704 | if (packetBufferLen > MAX_BUFFER_LEN) { |
| 705 | |
| 706 | /* |
| 707 | * On 95/98 if we try to send a datagram >12k to an application |
| 708 | * on the same machine then this will fail silently. Thus we |
| 709 | * catch this situation here so that we can throw an exception |
| 710 | * when this arises. |
| 711 | * On ME if we try to send a datagram with a size greater than |
| 712 | * that supported by the service provider then no error is |
| 713 | * returned. |
| 714 | */ |
| 715 | if (!w2k_or_later) { /* avoid this check on Win 2K or better. Does not work with IPv6. |
| 716 | * Check is not necessary on these OSes */ |
| 717 | if (connected) { |
| 718 | address = (*env)->GetIntField(env, iaObj, ia_addressID); |
| 719 | } else { |
| 720 | address = ntohl(rmtaddr.him4.sin_addr.s_addr); |
| 721 | } |
| 722 | |
| 723 | if (exceedSizeLimit(env, fd, address, packetBufferLen)) { |
| 724 | if (!((*env)->ExceptionOccurred(env))) { |
| 725 | NET_ThrowNew(env, WSAEMSGSIZE, "Datagram send failed"); |
| 726 | } |
| 727 | return; |
| 728 | } |
| 729 | } |
| 730 | |
| 731 | /* When JNI-ifying the JDK's IO routines, we turned |
| 732 | * read's and write's of byte arrays of size greater |
| 733 | * than 2048 bytes into several operations of size 2048. |
| 734 | * This saves a malloc()/memcpy()/free() for big |
| 735 | * buffers. This is OK for file IO and TCP, but that |
| 736 | * strategy violates the semantics of a datagram protocol. |
| 737 | * (one big send) != (several smaller sends). So here |
| 738 | * we *must* alloc the buffer. Note it needn't be bigger |
| 739 | * than 65,536 (0xFFFF) the max size of an IP packet. |
| 740 | * anything bigger is truncated anyway. |
| 741 | */ |
| 742 | fullPacket = (char *)malloc(packetBufferLen); |
| 743 | if (!fullPacket) { |
| 744 | JNU_ThrowOutOfMemoryError(env, "heap allocation failed"); |
| 745 | return; |
| 746 | } |
| 747 | } else { |
| 748 | fullPacket = &(BUF[0]); |
| 749 | } |
| 750 | |
| 751 | (*env)->GetByteArrayRegion(env, packetBuffer, packetBufferOffset, packetBufferLen, |
| 752 | (jbyte *)fullPacket); |
| 753 | switch (sendto(fd, fullPacket, packetBufferLen, 0, |
| 754 | (struct sockaddr *)addrp, addrlen)) { |
| 755 | case JVM_IO_ERR: |
| 756 | NET_ThrowCurrent(env, "Datagram send failed"); |
| 757 | break; |
| 758 | |
| 759 | case JVM_IO_INTR: |
| 760 | JNU_ThrowByName(env, JNU_JAVAIOPKG "InterruptedIOException", |
| 761 | "operation interrupted"); |
| 762 | } |
| 763 | |
| 764 | if (packetBufferLen > MAX_BUFFER_LEN) { |
| 765 | free(fullPacket); |
| 766 | } |
| 767 | } |
| 768 | |
| 769 | /* |
| 770 | * check which socket was last serviced when there was data on both sockets. |
| 771 | * Only call this if sure that there is data on both sockets. |
| 772 | */ |
| 773 | static int checkLastFD (JNIEnv *env, jobject this, int fd, int fd1) { |
| 774 | int nextfd, lastfd = (*env)->GetIntField(env, this, pdsi_lastfdID); |
| 775 | if (lastfd == -1) { |
| 776 | /* arbitrary. Choose fd */ |
| 777 | (*env)->SetIntField(env, this, pdsi_lastfdID, fd); |
| 778 | return fd; |
| 779 | } else { |
| 780 | if (lastfd == fd) { |
| 781 | nextfd = fd1; |
| 782 | } else { |
| 783 | nextfd = fd; |
| 784 | } |
| 785 | (*env)->SetIntField(env, this, pdsi_lastfdID, nextfd); |
| 786 | return nextfd; |
| 787 | } |
| 788 | } |
| 789 | |
| 790 | /* |
| 791 | * Class: java_net_TwoStacksPlainDatagramSocketImpl |
| 792 | * Method: peek |
| 793 | * Signature: (Ljava/net/InetAddress;)I |
| 794 | */ |
| 795 | JNIEXPORT jint JNICALL |
| 796 | Java_java_net_TwoStacksPlainDatagramSocketImpl_peek(JNIEnv *env, jobject this, |
| 797 | jobject addressObj) { |
| 798 | |
| 799 | jobject fdObj = (*env)->GetObjectField(env, this, pdsi_fdID); |
| 800 | jint timeout = (*env)->GetIntField(env, this, pdsi_timeoutID); |
| 801 | jint fd; |
| 802 | |
| 803 | /* The address and family fields of addressObj */ |
| 804 | jint address, family; |
| 805 | |
| 806 | int n; |
| 807 | struct sockaddr_in remote_addr; |
| 808 | jint remote_addrsize = sizeof (remote_addr); |
| 809 | char buf[1]; |
| 810 | BOOL retry; |
| 811 | jlong prevTime = 0; |
| 812 | |
| 813 | if (IS_NULL(fdObj)) { |
| 814 | JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException", "Socket closed"); |
| 815 | return -1; |
| 816 | } else { |
| 817 | fd = (*env)->GetIntField(env, fdObj, IO_fd_fdID); |
| 818 | if (fd < 0) { |
| 819 | JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException", |
| 820 | "socket closed"); |
| 821 | return -1; |
| 822 | } |
| 823 | } |
| 824 | if (IS_NULL(addressObj)) { |
| 825 | JNU_ThrowNullPointerException(env, "Null address in peek()"); |
| 826 | } else { |
| 827 | address = (*env)->GetIntField(env, addressObj, ia_addressID); |
| 828 | /* We only handle IPv4 for now. Will support IPv6 once its in the os */ |
| 829 | family = AF_INET; |
| 830 | } |
| 831 | |
| 832 | do { |
| 833 | retry = FALSE; |
| 834 | |
| 835 | /* |
| 836 | * If a timeout has been specified then we select on the socket |
| 837 | * waiting for a read event or a timeout. |
| 838 | */ |
| 839 | if (timeout) { |
| 840 | int ret; |
| 841 | prevTime = JVM_CurrentTimeMillis(env, 0); |
| 842 | ret = NET_Timeout (fd, timeout); |
| 843 | if (ret == 0) { |
| 844 | JNU_ThrowByName(env, JNU_JAVANETPKG "SocketTimeoutException", |
| 845 | "Peek timed out"); |
| 846 | return ret; |
| 847 | } else if (ret == JVM_IO_ERR) { |
| 848 | NET_ThrowCurrent(env, "timeout in datagram socket peek"); |
| 849 | return ret; |
| 850 | } else if (ret == JVM_IO_INTR) { |
| 851 | JNU_ThrowByName(env, JNU_JAVAIOPKG "InterruptedIOException", |
| 852 | "operation interrupted"); |
| 853 | return ret; |
| 854 | } |
| 855 | } |
| 856 | |
| 857 | /* now try the peek */ |
| 858 | n = recvfrom(fd, buf, 1, MSG_PEEK, |
| 859 | (struct sockaddr *)&remote_addr, &remote_addrsize); |
| 860 | |
| 861 | if (n == JVM_IO_ERR) { |
| 862 | if (WSAGetLastError() == WSAECONNRESET) { |
| 863 | jboolean connected; |
| 864 | |
| 865 | /* |
| 866 | * An icmp port unreachable - we must receive this as Windows |
| 867 | * does not reset the state of the socket until this has been |
| 868 | * received. |
| 869 | */ |
| 870 | purgeOutstandingICMP(env, this, fd); |
| 871 | |
| 872 | connected = (*env)->GetBooleanField(env, this, pdsi_connected); |
| 873 | if (connected) { |
| 874 | JNU_ThrowByName(env, JNU_JAVANETPKG "PortUnreachableException", |
| 875 | "ICMP Port Unreachable"); |
| 876 | return 0; |
| 877 | } |
| 878 | |
| 879 | /* |
| 880 | * If a timeout was specified then we need to adjust it because |
| 881 | * we may have used up some of the timeout befor the icmp port |
| 882 | * unreachable arrived. |
| 883 | */ |
| 884 | if (timeout) { |
| 885 | jlong newTime = JVM_CurrentTimeMillis(env, 0); |
| 886 | timeout -= (newTime - prevTime); |
| 887 | if (timeout <= 0) { |
| 888 | JNU_ThrowByName(env, JNU_JAVANETPKG "SocketTimeoutException", |
| 889 | "Receive timed out"); |
| 890 | return 0; |
| 891 | } |
| 892 | prevTime = newTime; |
| 893 | } |
| 894 | |
| 895 | /* Need to retry the recv */ |
| 896 | retry = TRUE; |
| 897 | } |
| 898 | } |
| 899 | } while (retry); |
| 900 | |
| 901 | if (n == JVM_IO_ERR && WSAGetLastError() != WSAEMSGSIZE) { |
| 902 | NET_ThrowCurrent(env, "Datagram peek failed"); |
| 903 | return 0; |
| 904 | } |
| 905 | if (n == JVM_IO_INTR) { |
| 906 | JNU_ThrowByName(env, JNU_JAVAIOPKG "InterruptedIOException", 0); |
| 907 | return 0; |
| 908 | } |
| 909 | (*env)->SetIntField(env, addressObj, ia_addressID, |
| 910 | ntohl(remote_addr.sin_addr.s_addr)); |
| 911 | (*env)->SetIntField(env, addressObj, ia_familyID, IPv4); |
| 912 | |
| 913 | /* return port */ |
| 914 | return ntohs(remote_addr.sin_port); |
| 915 | } |
| 916 | |
| 917 | JNIEXPORT jint JNICALL |
| 918 | Java_java_net_TwoStacksPlainDatagramSocketImpl_peekData(JNIEnv *env, jobject this, |
| 919 | jobject packet) { |
| 920 | |
| 921 | char BUF[MAX_BUFFER_LEN]; |
| 922 | char *fullPacket; |
| 923 | jobject fdObj = (*env)->GetObjectField(env, this, pdsi_fdID); |
| 924 | jobject fd1Obj = (*env)->GetObjectField(env, this, pdsi_fd1ID); |
| 925 | jint timeout = (*env)->GetIntField(env, this, pdsi_timeoutID); |
| 926 | |
| 927 | jbyteArray packetBuffer; |
| 928 | jint packetBufferOffset, packetBufferLen; |
| 929 | |
| 930 | int fd, fd1, fduse, nsockets=0, errorCode; |
| 931 | int port; |
| 932 | jbyteArray data; |
| 933 | |
| 934 | int checkBoth = 0, datalen; |
| 935 | int n; |
| 936 | SOCKETADDRESS remote_addr; |
| 937 | jint remote_addrsize=sizeof(remote_addr); |
| 938 | BOOL retry; |
| 939 | jlong prevTime = 0; |
| 940 | |
| 941 | if (!IS_NULL(fdObj)) { |
| 942 | fd = (*env)->GetIntField(env, fdObj, IO_fd_fdID); |
| 943 | if (fd < 0) { |
| 944 | JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException", |
| 945 | "socket closed"); |
| 946 | return -1; |
| 947 | } |
| 948 | nsockets = 1; |
| 949 | } |
| 950 | |
| 951 | if (!IS_NULL(fd1Obj)) { |
| 952 | fd1 = (*env)->GetIntField(env, fd1Obj, IO_fd_fdID); |
| 953 | if (fd1 < 0) { |
| 954 | JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException", |
| 955 | "socket closed"); |
| 956 | return -1; |
| 957 | } |
| 958 | nsockets ++; |
| 959 | } |
| 960 | |
| 961 | switch (nsockets) { |
| 962 | case 0: |
| 963 | JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException", |
| 964 | "socket closed"); |
| 965 | return -1; |
| 966 | case 1: |
| 967 | if (!IS_NULL(fdObj)) { |
| 968 | fduse = fd; |
| 969 | } else { |
| 970 | fduse = fd1; |
| 971 | } |
| 972 | break; |
| 973 | case 2: |
| 974 | checkBoth = TRUE; |
| 975 | break; |
| 976 | } |
| 977 | |
| 978 | if (IS_NULL(packet)) { |
| 979 | JNU_ThrowNullPointerException(env, "packet"); |
| 980 | return -1; |
| 981 | } |
| 982 | |
| 983 | packetBuffer = (*env)->GetObjectField(env, packet, dp_bufID); |
| 984 | |
| 985 | if (IS_NULL(packetBuffer)) { |
| 986 | JNU_ThrowNullPointerException(env, "packet buffer"); |
| 987 | return -1; |
| 988 | } |
| 989 | |
| 990 | packetBufferOffset = (*env)->GetIntField(env, packet, dp_offsetID); |
| 991 | packetBufferLen = (*env)->GetIntField(env, packet, dp_bufLengthID); |
| 992 | |
| 993 | if (packetBufferLen > MAX_BUFFER_LEN) { |
| 994 | |
| 995 | /* When JNI-ifying the JDK's IO routines, we turned |
| 996 | * read's and write's of byte arrays of size greater |
| 997 | * than 2048 bytes into several operations of size 2048. |
| 998 | * This saves a malloc()/memcpy()/free() for big |
| 999 | * buffers. This is OK for file IO and TCP, but that |
| 1000 | * strategy violates the semantics of a datagram protocol. |
| 1001 | * (one big send) != (several smaller sends). So here |
| 1002 | * we *must* alloc the buffer. Note it needn't be bigger |
| 1003 | * than 65,536 (0xFFFF) the max size of an IP packet. |
| 1004 | * anything bigger is truncated anyway. |
| 1005 | */ |
| 1006 | fullPacket = (char *)malloc(packetBufferLen); |
| 1007 | if (!fullPacket) { |
| 1008 | JNU_ThrowOutOfMemoryError(env, "heap allocation failed"); |
| 1009 | return -1; |
| 1010 | } |
| 1011 | } else { |
| 1012 | fullPacket = &(BUF[0]); |
| 1013 | } |
| 1014 | |
| 1015 | do { |
| 1016 | int ret; |
| 1017 | retry = FALSE; |
| 1018 | |
| 1019 | /* |
| 1020 | * If a timeout has been specified then we select on the socket |
| 1021 | * waiting for a read event or a timeout. |
| 1022 | */ |
| 1023 | if (checkBoth) { |
| 1024 | int t = timeout == 0 ? -1: timeout; |
| 1025 | prevTime = JVM_CurrentTimeMillis(env, 0); |
| 1026 | ret = NET_Timeout2 (fd, fd1, t, &fduse); |
| 1027 | /* all subsequent calls to recv() or select() will use the same fd |
| 1028 | * for this call to peek() */ |
| 1029 | if (ret <= 0) { |
| 1030 | if (ret == 0) { |
| 1031 | JNU_ThrowByName(env,JNU_JAVANETPKG "SocketTimeoutException", |
| 1032 | "Peek timed out"); |
| 1033 | } else if (ret == JVM_IO_ERR) { |
| 1034 | NET_ThrowCurrent(env, "timeout in datagram socket peek"); |
| 1035 | } else if (ret == JVM_IO_INTR) { |
| 1036 | JNU_ThrowByName(env, JNU_JAVAIOPKG "InterruptedIOException", |
| 1037 | "operation interrupted"); |
| 1038 | } |
| 1039 | if (packetBufferLen > MAX_BUFFER_LEN) { |
| 1040 | free(fullPacket); |
| 1041 | } |
| 1042 | return -1; |
| 1043 | } |
| 1044 | if (ret == 2) { |
| 1045 | fduse = checkLastFD (env, this, fd, fd1); |
| 1046 | } |
| 1047 | checkBoth = FALSE; |
| 1048 | } else if (timeout) { |
| 1049 | if (prevTime == 0) { |
| 1050 | prevTime = JVM_CurrentTimeMillis(env, 0); |
| 1051 | } |
| 1052 | ret = NET_Timeout (fduse, timeout); |
| 1053 | if (ret <= 0) { |
| 1054 | if (ret == 0) { |
| 1055 | JNU_ThrowByName(env,JNU_JAVANETPKG "SocketTimeoutException", |
| 1056 | "Receive timed out"); |
| 1057 | } else if (ret == JVM_IO_ERR) { |
| 1058 | JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException", |
| 1059 | "Socket closed"); |
| 1060 | } else if (ret == JVM_IO_INTR) { |
| 1061 | JNU_ThrowByName(env, JNU_JAVAIOPKG "InterruptedIOException", |
| 1062 | "operation interrupted"); |
| 1063 | } |
| 1064 | if (packetBufferLen > MAX_BUFFER_LEN) { |
| 1065 | free(fullPacket); |
| 1066 | } |
| 1067 | return -1; |
| 1068 | } |
| 1069 | } |
| 1070 | |
| 1071 | /* receive the packet */ |
| 1072 | n = recvfrom(fduse, fullPacket, packetBufferLen, MSG_PEEK, |
| 1073 | (struct sockaddr *)&remote_addr, &remote_addrsize); |
| 1074 | port = (int) ntohs ((u_short) GET_PORT((SOCKETADDRESS *)&remote_addr)); |
| 1075 | if (n == JVM_IO_ERR) { |
| 1076 | if (WSAGetLastError() == WSAECONNRESET) { |
| 1077 | jboolean connected; |
| 1078 | |
| 1079 | /* |
| 1080 | * An icmp port unreachable - we must receive this as Windows |
| 1081 | * does not reset the state of the socket until this has been |
| 1082 | * received. |
| 1083 | */ |
| 1084 | purgeOutstandingICMP(env, this, fduse); |
| 1085 | |
| 1086 | connected = (*env)->GetBooleanField(env, this, pdsi_connected); |
| 1087 | if (connected) { |
| 1088 | JNU_ThrowByName(env, JNU_JAVANETPKG "PortUnreachableException", |
| 1089 | "ICMP Port Unreachable"); |
| 1090 | |
| 1091 | if (packetBufferLen > MAX_BUFFER_LEN) { |
| 1092 | free(fullPacket); |
| 1093 | } |
| 1094 | return -1; |
| 1095 | } |
| 1096 | |
| 1097 | /* |
| 1098 | * If a timeout was specified then we need to adjust it because |
| 1099 | * we may have used up some of the timeout befor the icmp port |
| 1100 | * unreachable arrived. |
| 1101 | */ |
| 1102 | if (timeout) { |
| 1103 | jlong newTime = JVM_CurrentTimeMillis(env, 0); |
| 1104 | timeout -= (newTime - prevTime); |
| 1105 | if (timeout <= 0) { |
| 1106 | JNU_ThrowByName(env, JNU_JAVANETPKG "SocketTimeoutException", |
| 1107 | "Receive timed out"); |
| 1108 | if (packetBufferLen > MAX_BUFFER_LEN) { |
| 1109 | free(fullPacket); |
| 1110 | } |
| 1111 | return -1; |
| 1112 | } |
| 1113 | prevTime = newTime; |
| 1114 | } |
| 1115 | retry = TRUE; |
| 1116 | } |
| 1117 | } |
| 1118 | } while (retry); |
| 1119 | |
| 1120 | /* truncate the data if the packet's length is too small */ |
| 1121 | if (n > packetBufferLen) { |
| 1122 | n = packetBufferLen; |
| 1123 | } |
| 1124 | if (n < 0) { |
| 1125 | errorCode = WSAGetLastError(); |
| 1126 | /* check to see if it's because the buffer was too small */ |
| 1127 | if (errorCode == WSAEMSGSIZE) { |
| 1128 | /* it is because the buffer is too small. It's UDP, it's |
| 1129 | * unreliable, it's all good. discard the rest of the |
| 1130 | * data.. |
| 1131 | */ |
| 1132 | n = packetBufferLen; |
| 1133 | } else { |
| 1134 | /* failure */ |
| 1135 | (*env)->SetIntField(env, packet, dp_lengthID, 0); |
| 1136 | } |
| 1137 | } |
| 1138 | if (n == -1) { |
| 1139 | JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException", "socket closed"); |
| 1140 | } else if (n == -2) { |
| 1141 | JNU_ThrowByName(env, JNU_JAVAIOPKG "InterruptedIOException", |
| 1142 | "operation interrupted"); |
| 1143 | } else if (n < 0) { |
| 1144 | NET_ThrowCurrent(env, "Datagram receive failed"); |
| 1145 | } else { |
| 1146 | jobject packetAddress; |
| 1147 | |
| 1148 | /* |
| 1149 | * Check if there is an InetAddress already associated with this |
| 1150 | * packet. If so we check if it is the same source address. We |
| 1151 | * can't update any existing InetAddress because it is immutable |
| 1152 | */ |
| 1153 | packetAddress = (*env)->GetObjectField(env, packet, dp_addressID); |
| 1154 | if (packetAddress != NULL) { |
| 1155 | if (!NET_SockaddrEqualsInetAddress(env, (struct sockaddr *) |
| 1156 | &remote_addr, packetAddress)) { |
| 1157 | /* force a new InetAddress to be created */ |
| 1158 | packetAddress = NULL; |
| 1159 | } |
| 1160 | } |
| 1161 | if (packetAddress == NULL) { |
| 1162 | packetAddress = NET_SockaddrToInetAddress(env, (struct sockaddr *) |
| 1163 | &remote_addr, &port); |
| 1164 | /* stuff the new Inetaddress in the packet */ |
| 1165 | (*env)->SetObjectField(env, packet, dp_addressID, packetAddress); |
| 1166 | } |
| 1167 | |
| 1168 | /* populate the packet */ |
| 1169 | (*env)->SetByteArrayRegion(env, packetBuffer, packetBufferOffset, n, |
| 1170 | (jbyte *)fullPacket); |
| 1171 | (*env)->SetIntField(env, packet, dp_portID, port); |
| 1172 | (*env)->SetIntField(env, packet, dp_lengthID, n); |
| 1173 | } |
| 1174 | |
| 1175 | /* make sure receive() picks up the right fd */ |
| 1176 | (*env)->SetIntField(env, this, pdsi_fduseID, fduse); |
| 1177 | |
| 1178 | if (packetBufferLen > MAX_BUFFER_LEN) { |
| 1179 | free(fullPacket); |
| 1180 | } |
| 1181 | return port; |
| 1182 | } |
| 1183 | |
| 1184 | /* |
| 1185 | * Class: java_net_TwoStacksPlainDatagramSocketImpl |
| 1186 | * Method: receive |
| 1187 | * Signature: (Ljava/net/DatagramPacket;)V |
| 1188 | */ |
| 1189 | JNIEXPORT void JNICALL |
| 1190 | Java_java_net_TwoStacksPlainDatagramSocketImpl_receive0(JNIEnv *env, jobject this, |
| 1191 | jobject packet) { |
| 1192 | |
| 1193 | char BUF[MAX_BUFFER_LEN]; |
| 1194 | char *fullPacket; |
| 1195 | jobject fdObj = (*env)->GetObjectField(env, this, pdsi_fdID); |
| 1196 | jobject fd1Obj = (*env)->GetObjectField(env, this, pdsi_fd1ID); |
| 1197 | jint timeout = (*env)->GetIntField(env, this, pdsi_timeoutID); |
| 1198 | jbyteArray packetBuffer; |
| 1199 | jint packetBufferOffset, packetBufferLen; |
| 1200 | int ipv6_supported = ipv6_available(); |
| 1201 | |
| 1202 | /* as a result of the changes for ipv6, peek() or peekData() |
| 1203 | * must be called prior to receive() so that fduse can be set. |
| 1204 | */ |
| 1205 | int fd, fd1, fduse, errorCode; |
| 1206 | jbyteArray data; |
| 1207 | |
| 1208 | int datalen; |
| 1209 | int n, nsockets=0; |
| 1210 | SOCKETADDRESS remote_addr; |
| 1211 | jint remote_addrsize=sizeof(remote_addr); |
| 1212 | BOOL retry; |
| 1213 | jlong prevTime = 0, selectTime=0; |
| 1214 | jboolean connected; |
| 1215 | |
| 1216 | if (IS_NULL(fdObj) && IS_NULL(fd1Obj)) { |
| 1217 | JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException", |
| 1218 | "Socket closed"); |
| 1219 | return; |
| 1220 | } |
| 1221 | |
| 1222 | if (!IS_NULL(fdObj)) { |
| 1223 | fd = (*env)->GetIntField(env, fdObj, IO_fd_fdID); |
| 1224 | nsockets ++; |
| 1225 | } |
| 1226 | if (!IS_NULL(fd1Obj)) { |
| 1227 | fd1 = (*env)->GetIntField(env, fd1Obj, IO_fd_fdID); |
| 1228 | nsockets ++; |
| 1229 | } |
| 1230 | |
| 1231 | if (nsockets == 2) { /* need to choose one of them */ |
| 1232 | /* was fduse set in peek? */ |
| 1233 | fduse = (*env)->GetIntField(env, this, pdsi_fduseID); |
| 1234 | if (fduse == -1) { |
| 1235 | /* not set in peek(), must select on both sockets */ |
| 1236 | int ret, t = (timeout == 0) ? -1: timeout; |
| 1237 | ret = NET_Timeout2 (fd, fd1, t, &fduse); |
| 1238 | if (ret == 2) { |
| 1239 | fduse = checkLastFD (env, this, fd, fd1); |
| 1240 | } else if (ret <= 0) { |
| 1241 | if (ret == 0) { |
| 1242 | JNU_ThrowByName(env, JNU_JAVANETPKG "SocketTimeoutException", |
| 1243 | "Receive timed out"); |
| 1244 | } else if (ret == JVM_IO_ERR) { |
| 1245 | JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException", |
| 1246 | "Socket closed"); |
| 1247 | } else if (ret == JVM_IO_INTR) { |
| 1248 | JNU_ThrowByName(env, JNU_JAVAIOPKG "InterruptedIOException", |
| 1249 | "operation interrupted"); |
| 1250 | } |
| 1251 | return; |
| 1252 | } |
| 1253 | } |
| 1254 | } else if (!ipv6_supported) { |
| 1255 | fduse = fd; |
| 1256 | } else if (IS_NULL(fdObj)) { |
| 1257 | /* ipv6 supported: and this socket bound to an IPV6 only address */ |
| 1258 | fduse = fd1; |
| 1259 | } else { |
| 1260 | /* ipv6 supported: and this socket bound to an IPV4 only address */ |
| 1261 | fduse = fd; |
| 1262 | } |
| 1263 | |
| 1264 | if (IS_NULL(packet)) { |
| 1265 | JNU_ThrowNullPointerException(env, "packet"); |
| 1266 | return; |
| 1267 | } |
| 1268 | |
| 1269 | packetBuffer = (*env)->GetObjectField(env, packet, dp_bufID); |
| 1270 | |
| 1271 | if (IS_NULL(packetBuffer)) { |
| 1272 | JNU_ThrowNullPointerException(env, "packet buffer"); |
| 1273 | return; |
| 1274 | } |
| 1275 | |
| 1276 | packetBufferOffset = (*env)->GetIntField(env, packet, dp_offsetID); |
| 1277 | packetBufferLen = (*env)->GetIntField(env, packet, dp_bufLengthID); |
| 1278 | |
| 1279 | if (packetBufferLen > MAX_BUFFER_LEN) { |
| 1280 | |
| 1281 | /* When JNI-ifying the JDK's IO routines, we turned |
| 1282 | * read's and write's of byte arrays of size greater |
| 1283 | * than 2048 bytes into several operations of size 2048. |
| 1284 | * This saves a malloc()/memcpy()/free() for big |
| 1285 | * buffers. This is OK for file IO and TCP, but that |
| 1286 | * strategy violates the semantics of a datagram protocol. |
| 1287 | * (one big send) != (several smaller sends). So here |
| 1288 | * we *must* alloc the buffer. Note it needn't be bigger |
| 1289 | * than 65,536 (0xFFFF) the max size of an IP packet. |
| 1290 | * anything bigger is truncated anyway. |
| 1291 | */ |
| 1292 | fullPacket = (char *)malloc(packetBufferLen); |
| 1293 | if (!fullPacket) { |
| 1294 | JNU_ThrowOutOfMemoryError(env, "heap allocation failed"); |
| 1295 | return; |
| 1296 | } |
| 1297 | } else { |
| 1298 | fullPacket = &(BUF[0]); |
| 1299 | } |
| 1300 | |
| 1301 | |
| 1302 | |
| 1303 | /* |
| 1304 | * If this Windows edition supports ICMP port unreachable and if we |
| 1305 | * are not connected then we need to know if a timeout has been specified |
| 1306 | * and if so we need to pick up the current time. These are required in |
| 1307 | * order to implement the semantics of timeout, viz :- |
| 1308 | * timeout set to t1 but ICMP port unreachable arrives in t2 where |
| 1309 | * t2 < t1. In this case we must discard the ICMP packets and then |
| 1310 | * wait for the next packet up to a maximum of t1 minus t2. |
| 1311 | */ |
| 1312 | connected = (*env)->GetBooleanField(env, this, pdsi_connected); |
| 1313 | if (supportPortUnreachable() && !connected && timeout &&!ipv6_supported) { |
| 1314 | prevTime = JVM_CurrentTimeMillis(env, 0); |
| 1315 | } |
| 1316 | |
| 1317 | if (timeout && nsockets == 1) { |
| 1318 | int ret; |
| 1319 | ret = NET_Timeout(fduse, timeout); |
| 1320 | if (ret <= 0) { |
| 1321 | if (ret == 0) { |
| 1322 | JNU_ThrowByName(env, JNU_JAVANETPKG "SocketTimeoutException", |
| 1323 | "Receive timed out"); |
| 1324 | } else if (ret == JVM_IO_ERR) { |
| 1325 | JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException", |
| 1326 | "Socket closed"); |
| 1327 | } else if (ret == JVM_IO_INTR) { |
| 1328 | JNU_ThrowByName(env, JNU_JAVAIOPKG "InterruptedIOException", |
| 1329 | "operation interrupted"); |
| 1330 | } |
| 1331 | if (packetBufferLen > MAX_BUFFER_LEN) { |
| 1332 | free(fullPacket); |
| 1333 | } |
| 1334 | return; |
| 1335 | } |
| 1336 | } |
| 1337 | |
| 1338 | /* |
| 1339 | * Loop only if we discarding ICMP port unreachable packets |
| 1340 | */ |
| 1341 | do { |
| 1342 | retry = FALSE; |
| 1343 | |
| 1344 | /* receive the packet */ |
| 1345 | n = recvfrom(fduse, fullPacket, packetBufferLen, 0, |
| 1346 | (struct sockaddr *)&remote_addr, &remote_addrsize); |
| 1347 | |
| 1348 | if (n == JVM_IO_ERR) { |
| 1349 | if (WSAGetLastError() == WSAECONNRESET) { |
| 1350 | /* |
| 1351 | * An icmp port unreachable has been received - consume any other |
| 1352 | * outstanding packets. |
| 1353 | */ |
| 1354 | purgeOutstandingICMP(env, this, fduse); |
| 1355 | |
| 1356 | /* |
| 1357 | * If connected throw a PortUnreachableException |
| 1358 | */ |
| 1359 | |
| 1360 | if (connected) { |
| 1361 | JNU_ThrowByName(env, JNU_JAVANETPKG "PortUnreachableException", |
| 1362 | "ICMP Port Unreachable"); |
| 1363 | |
| 1364 | if (packetBufferLen > MAX_BUFFER_LEN) { |
| 1365 | free(fullPacket); |
| 1366 | } |
| 1367 | |
| 1368 | return; |
| 1369 | } |
| 1370 | |
| 1371 | /* |
| 1372 | * If a timeout was specified then we need to adjust it because |
| 1373 | * we may have used up some of the timeout before the icmp port |
| 1374 | * unreachable arrived. |
| 1375 | */ |
| 1376 | if (timeout) { |
| 1377 | int ret; |
| 1378 | jlong newTime = JVM_CurrentTimeMillis(env, 0); |
| 1379 | timeout -= (newTime - prevTime); |
| 1380 | prevTime = newTime; |
| 1381 | |
| 1382 | if (timeout <= 0) { |
| 1383 | ret = 0; |
| 1384 | } else { |
| 1385 | ret = NET_Timeout(fduse, timeout); |
| 1386 | } |
| 1387 | |
| 1388 | if (ret <= 0) { |
| 1389 | if (ret == 0) { |
| 1390 | JNU_ThrowByName(env, JNU_JAVANETPKG "SocketTimeoutException", |
| 1391 | "Receive timed out"); |
| 1392 | } else if (ret == JVM_IO_ERR) { |
| 1393 | JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException", |
| 1394 | "Socket closed"); |
| 1395 | } else if (ret == JVM_IO_INTR) { |
| 1396 | JNU_ThrowByName(env, JNU_JAVAIOPKG "InterruptedIOException", |
| 1397 | "operation interrupted"); |
| 1398 | } |
| 1399 | if (packetBufferLen > MAX_BUFFER_LEN) { |
| 1400 | free(fullPacket); |
| 1401 | } |
| 1402 | return; |
| 1403 | } |
| 1404 | } |
| 1405 | |
| 1406 | /* |
| 1407 | * An ICMP port unreachable was received but we are |
| 1408 | * not connected so ignore it. |
| 1409 | */ |
| 1410 | retry = TRUE; |
| 1411 | } |
| 1412 | } |
| 1413 | } while (retry); |
| 1414 | |
| 1415 | /* truncate the data if the packet's length is too small */ |
| 1416 | if (n > packetBufferLen) { |
| 1417 | n = packetBufferLen; |
| 1418 | } |
| 1419 | if (n < 0) { |
| 1420 | errorCode = WSAGetLastError(); |
| 1421 | /* check to see if it's because the buffer was too small */ |
| 1422 | if (errorCode == WSAEMSGSIZE) { |
| 1423 | /* it is because the buffer is too small. It's UDP, it's |
| 1424 | * unreliable, it's all good. discard the rest of the |
| 1425 | * data.. |
| 1426 | */ |
| 1427 | n = packetBufferLen; |
| 1428 | } else { |
| 1429 | /* failure */ |
| 1430 | (*env)->SetIntField(env, packet, dp_lengthID, 0); |
| 1431 | } |
| 1432 | } |
| 1433 | if (n == -1) { |
| 1434 | JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException", "socket closed"); |
| 1435 | } else if (n == -2) { |
| 1436 | JNU_ThrowByName(env, JNU_JAVAIOPKG "InterruptedIOException", |
| 1437 | "operation interrupted"); |
| 1438 | } else if (n < 0) { |
| 1439 | NET_ThrowCurrent(env, "Datagram receive failed"); |
| 1440 | } else { |
| 1441 | int port; |
| 1442 | jobject packetAddress; |
| 1443 | |
| 1444 | /* |
| 1445 | * Check if there is an InetAddress already associated with this |
| 1446 | * packet. If so we check if it is the same source address. We |
| 1447 | * can't update any existing InetAddress because it is immutable |
| 1448 | */ |
| 1449 | packetAddress = (*env)->GetObjectField(env, packet, dp_addressID); |
| 1450 | |
| 1451 | if (packetAddress != NULL) { |
| 1452 | if (!NET_SockaddrEqualsInetAddress(env, (struct sockaddr *)&remote_addr, packetAddress)) { |
| 1453 | /* force a new InetAddress to be created */ |
| 1454 | packetAddress = NULL; |
| 1455 | } |
| 1456 | } |
| 1457 | if (packetAddress == NULL) { |
| 1458 | packetAddress = NET_SockaddrToInetAddress(env, (struct sockaddr *)&remote_addr, &port); |
| 1459 | /* stuff the new Inetaddress in the packet */ |
| 1460 | (*env)->SetObjectField(env, packet, dp_addressID, packetAddress); |
| 1461 | } else { |
| 1462 | /* only get the new port number */ |
| 1463 | port = NET_GetPortFromSockaddr((struct sockaddr *)&remote_addr); |
| 1464 | } |
| 1465 | /* populate the packet */ |
| 1466 | (*env)->SetByteArrayRegion(env, packetBuffer, packetBufferOffset, n, |
| 1467 | (jbyte *)fullPacket); |
| 1468 | (*env)->SetIntField(env, packet, dp_portID, port); |
| 1469 | (*env)->SetIntField(env, packet, dp_lengthID, n); |
| 1470 | } |
| 1471 | if (packetBufferLen > MAX_BUFFER_LEN) { |
| 1472 | free(fullPacket); |
| 1473 | } |
| 1474 | } |
| 1475 | |
| 1476 | /* |
| 1477 | * Class: java_net_TwoStacksPlainDatagramSocketImpl |
| 1478 | * Method: datagramSocketCreate |
| 1479 | * Signature: ()V |
| 1480 | */ |
| 1481 | JNIEXPORT void JNICALL |
| 1482 | Java_java_net_TwoStacksPlainDatagramSocketImpl_datagramSocketCreate(JNIEnv *env, |
| 1483 | jobject this) { |
| 1484 | jobject fdObj = (*env)->GetObjectField(env, this, pdsi_fdID); |
| 1485 | jobject fd1Obj = (*env)->GetObjectField(env, this, pdsi_fd1ID); |
| 1486 | |
| 1487 | int fd, fd1; |
| 1488 | int t = TRUE; |
| 1489 | DWORD x1, x2; /* ignored result codes */ |
| 1490 | int ipv6_supported = ipv6_available(); |
| 1491 | |
| 1492 | int arg = -1; |
| 1493 | |
| 1494 | if (IS_NULL(fdObj) || (ipv6_supported && IS_NULL(fd1Obj))) { |
| 1495 | JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException", "Socket closed"); |
| 1496 | return; |
| 1497 | } else { |
| 1498 | fd = (int) socket (AF_INET, SOCK_DGRAM, 0); |
| 1499 | } |
| 1500 | if (fd == JVM_IO_ERR) { |
| 1501 | NET_ThrowCurrent(env, "Socket creation failed"); |
| 1502 | return; |
| 1503 | } |
| 1504 | SetHandleInformation((HANDLE)(UINT_PTR)fd, HANDLE_FLAG_INHERIT, FALSE); |
| 1505 | (*env)->SetIntField(env, fdObj, IO_fd_fdID, fd); |
| 1506 | NET_SetSockOpt(fd, SOL_SOCKET, SO_BROADCAST, (char*)&t, sizeof(BOOL)); |
| 1507 | |
| 1508 | if (ipv6_supported) { |
| 1509 | /* SIO_UDP_CONNRESET fixes a bug introduced in Windows 2000, which |
| 1510 | * returns connection reset errors un connected UDP sockets (as well |
| 1511 | * as connected sockets. The solution is to only enable this feature |
| 1512 | * when the socket is connected |
| 1513 | */ |
| 1514 | t = FALSE; |
| 1515 | WSAIoctl(fd,SIO_UDP_CONNRESET,&t,sizeof(t),&x1,sizeof(x1),&x2,0,0); |
| 1516 | t = TRUE; |
| 1517 | fd1 = socket (AF_INET6, SOCK_DGRAM, 0); |
| 1518 | if (fd1 == JVM_IO_ERR) { |
| 1519 | NET_ThrowCurrent(env, "Socket creation failed"); |
| 1520 | return; |
| 1521 | } |
| 1522 | NET_SetSockOpt(fd1, SOL_SOCKET, SO_BROADCAST, (char*)&t, sizeof(BOOL)); |
| 1523 | t = FALSE; |
| 1524 | WSAIoctl(fd1,SIO_UDP_CONNRESET,&t,sizeof(t),&x1,sizeof(x1),&x2,0,0); |
| 1525 | (*env)->SetIntField(env, fd1Obj, IO_fd_fdID, fd1); |
| 1526 | SetHandleInformation((HANDLE)(UINT_PTR)fd1, HANDLE_FLAG_INHERIT, FALSE); |
| 1527 | } else { |
| 1528 | /* drop the second fd */ |
| 1529 | (*env)->SetObjectField(env, this, pdsi_fd1ID, NULL); |
| 1530 | } |
| 1531 | } |
| 1532 | |
| 1533 | /* |
| 1534 | * Class: java_net_TwoStacksPlainDatagramSocketImpl |
| 1535 | * Method: datagramSocketClose |
| 1536 | * Signature: ()V |
| 1537 | */ |
| 1538 | JNIEXPORT void JNICALL |
| 1539 | Java_java_net_TwoStacksPlainDatagramSocketImpl_datagramSocketClose(JNIEnv *env, |
| 1540 | jobject this) { |
| 1541 | /* |
| 1542 | * REMIND: PUT A LOCK AROUND THIS CODE |
| 1543 | */ |
| 1544 | jobject fdObj = (*env)->GetObjectField(env, this, pdsi_fdID); |
| 1545 | jobject fd1Obj = (*env)->GetObjectField(env, this, pdsi_fd1ID); |
| 1546 | int ipv6_supported = ipv6_available(); |
| 1547 | int fd=-1, fd1=-1; |
| 1548 | |
| 1549 | if (IS_NULL(fdObj) && (!ipv6_supported || IS_NULL(fd1Obj))) { |
| 1550 | return; |
| 1551 | } |
| 1552 | |
| 1553 | if (!IS_NULL(fdObj)) { |
| 1554 | fd = (*env)->GetIntField(env, fdObj, IO_fd_fdID); |
| 1555 | if (fd != -1) { |
| 1556 | (*env)->SetIntField(env, fdObj, IO_fd_fdID, -1); |
| 1557 | NET_SocketClose(fd); |
| 1558 | } |
| 1559 | } |
| 1560 | |
| 1561 | if (ipv6_supported && fd1Obj != NULL) { |
| 1562 | fd1 = (*env)->GetIntField(env, fd1Obj, IO_fd_fdID); |
| 1563 | if (fd1 == -1) { |
| 1564 | return; |
| 1565 | } |
| 1566 | (*env)->SetIntField(env, fd1Obj, IO_fd_fdID, -1); |
| 1567 | NET_SocketClose(fd1); |
| 1568 | } |
| 1569 | } |
| 1570 | |
| 1571 | /* |
| 1572 | * check the addresses attached to the NetworkInterface object |
| 1573 | * and return the first one (of the requested family Ipv4 or Ipv6) |
| 1574 | * in *iaddr |
| 1575 | */ |
| 1576 | |
| 1577 | static int getInetAddrFromIf (JNIEnv *env, int family, jobject nif, jobject *iaddr) |
| 1578 | { |
| 1579 | jobjectArray addrArray; |
| 1580 | static jfieldID ni_addrsID=0; |
| 1581 | static jfieldID ia_familyID=0; |
| 1582 | jsize len; |
| 1583 | jobject addr; |
| 1584 | int i; |
| 1585 | |
| 1586 | if (ni_addrsID == NULL) { |
| 1587 | jclass c = (*env)->FindClass(env, "java/net/NetworkInterface"); |
| 1588 | CHECK_NULL_RETURN (c, -1); |
| 1589 | ni_addrsID = (*env)->GetFieldID(env, c, "addrs", |
| 1590 | "[Ljava/net/InetAddress;"); |
| 1591 | CHECK_NULL_RETURN (ni_addrsID, -1); |
| 1592 | c = (*env)->FindClass(env,"java/net/InetAddress"); |
| 1593 | CHECK_NULL_RETURN (c, -1); |
| 1594 | ia_familyID = (*env)->GetFieldID(env, c, "family", "I"); |
| 1595 | CHECK_NULL_RETURN (ia_familyID, -1); |
| 1596 | } |
| 1597 | |
| 1598 | addrArray = (*env)->GetObjectField(env, nif, ni_addrsID); |
| 1599 | len = (*env)->GetArrayLength(env, addrArray); |
| 1600 | |
| 1601 | /* |
| 1602 | * Check that there is at least one address bound to this |
| 1603 | * interface. |
| 1604 | */ |
| 1605 | if (len < 1) { |
| 1606 | JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException", |
| 1607 | "bad argument for IP_MULTICAST_IF2: No IP addresses bound to interface"); |
| 1608 | return -1; |
| 1609 | } |
| 1610 | for (i=0; i<len; i++) { |
| 1611 | int fam; |
| 1612 | addr = (*env)->GetObjectArrayElement(env, addrArray, i); |
| 1613 | fam = (*env)->GetIntField(env, addr, ia_familyID); |
| 1614 | if (fam == family) { |
| 1615 | *iaddr = addr; |
| 1616 | return 0; |
| 1617 | } |
| 1618 | } |
| 1619 | return -1; |
| 1620 | } |
| 1621 | |
| 1622 | static int getInet4AddrFromIf (JNIEnv *env, jobject nif, struct in_addr *iaddr) |
| 1623 | { |
| 1624 | jobject addr; |
| 1625 | static jfieldID ia_addressID; |
| 1626 | |
| 1627 | int ret = getInetAddrFromIf (env, IPv4, nif, &addr); |
| 1628 | if (ret == -1) { |
| 1629 | return -1; |
| 1630 | } |
| 1631 | |
| 1632 | if (ia_addressID == 0) { |
| 1633 | jclass c = (*env)->FindClass(env,"java/net/InetAddress"); |
| 1634 | CHECK_NULL_RETURN (c, -1); |
| 1635 | ia_addressID = (*env)->GetFieldID(env, c, "address", "I"); |
| 1636 | CHECK_NULL_RETURN (ia_addressID, -1); |
| 1637 | } |
| 1638 | iaddr->s_addr = htonl((*env)->GetIntField(env, addr, ia_addressID)); |
| 1639 | return 0; |
| 1640 | } |
| 1641 | |
| 1642 | /* Get the multicasting index from the interface */ |
| 1643 | |
| 1644 | static int getIndexFromIf (JNIEnv *env, jobject nif) { |
| 1645 | static jfieldID ni_indexID; |
| 1646 | |
| 1647 | if (ni_indexID == NULL) { |
| 1648 | jclass c = (*env)->FindClass(env, "java/net/NetworkInterface"); |
| 1649 | CHECK_NULL_RETURN(c, -1); |
| 1650 | ni_indexID = (*env)->GetFieldID(env, c, "index", "I"); |
| 1651 | CHECK_NULL_RETURN(ni_indexID, -1); |
| 1652 | } |
| 1653 | |
| 1654 | return (*env)->GetIntField(env, nif, ni_indexID); |
| 1655 | } |
| 1656 | |
| 1657 | /* |
| 1658 | * Sets the multicast interface. |
| 1659 | * |
| 1660 | * SocketOptions.IP_MULTICAST_IF (argument is an InetAddress) :- |
| 1661 | * IPv4: set outgoing multicast interface using |
| 1662 | * IPPROTO_IP/IP_MULTICAST_IF |
| 1663 | * |
| 1664 | * IPv6: Get the interface to which the |
| 1665 | * InetAddress is bound |
| 1666 | * and do same as SockOptions.IF_MULTICAST_IF2 |
| 1667 | * |
| 1668 | * SockOptions.IF_MULTICAST_IF2 (argument is a NetworkInterface ) :- |
| 1669 | * For each stack: |
| 1670 | * IPv4: Obtain IP address bound to network interface |
| 1671 | * (NetworkInterface.addres[0]) |
| 1672 | * set outgoing multicast interface using |
| 1673 | * IPPROTO_IP/IP_MULTICAST_IF |
| 1674 | * |
| 1675 | * IPv6: Obtain NetworkInterface.index |
| 1676 | * Set outgoing multicast interface using |
| 1677 | * IPPROTO_IPV6/IPV6_MULTICAST_IF |
| 1678 | * |
| 1679 | */ |
| 1680 | static void setMulticastInterface(JNIEnv *env, jobject this, int fd, int fd1, |
| 1681 | jint opt, jobject value) |
| 1682 | { |
| 1683 | int ipv6_supported = ipv6_available(); |
| 1684 | |
| 1685 | if (opt == java_net_SocketOptions_IP_MULTICAST_IF) { |
| 1686 | /* |
| 1687 | * value is an InetAddress. |
| 1688 | * On IPv4 system use IP_MULTICAST_IF socket option |
| 1689 | * On IPv6 system get the NetworkInterface that this IP |
| 1690 | * address is bound to and use the IPV6_MULTICAST_IF |
| 1691 | * option instead of IP_MULTICAST_IF |
| 1692 | */ |
| 1693 | if (ipv6_supported) { |
| 1694 | static jclass ni_class; |
| 1695 | if (ni_class == NULL) { |
| 1696 | jclass c = (*env)->FindClass(env, "java/net/NetworkInterface"); |
| 1697 | CHECK_NULL(c); |
| 1698 | ni_class = (*env)->NewGlobalRef(env, c); |
| 1699 | CHECK_NULL(ni_class); |
| 1700 | } |
| 1701 | |
| 1702 | value = Java_java_net_NetworkInterface_getByInetAddress0(env, ni_class, value); |
| 1703 | if (value == NULL) { |
| 1704 | if (!(*env)->ExceptionOccurred(env)) { |
| 1705 | JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException", |
| 1706 | "bad argument for IP_MULTICAST_IF" |
| 1707 | ": address not bound to any interface"); |
| 1708 | } |
| 1709 | return; |
| 1710 | } |
| 1711 | opt = java_net_SocketOptions_IP_MULTICAST_IF2; |
| 1712 | } else { |
| 1713 | static jfieldID ia_addressID; |
| 1714 | struct in_addr in; |
| 1715 | |
| 1716 | if (ia_addressID == NULL) { |
| 1717 | jclass c = (*env)->FindClass(env,"java/net/InetAddress"); |
| 1718 | CHECK_NULL(c); |
| 1719 | ia_addressID = (*env)->GetFieldID(env, c, "address", "I"); |
| 1720 | CHECK_NULL(ia_addressID); |
| 1721 | } |
| 1722 | |
| 1723 | in.s_addr = htonl((*env)->GetIntField(env, value, ia_addressID)); |
| 1724 | |
| 1725 | if (setsockopt(fd, IPPROTO_IP, IP_MULTICAST_IF, |
| 1726 | (const char*)&in, sizeof(in)) < 0) { |
| 1727 | NET_ThrowByNameWithLastError(env, JNU_JAVANETPKG "SocketException", |
| 1728 | "Error setting socket option"); |
| 1729 | } |
| 1730 | return; |
| 1731 | } |
| 1732 | } |
| 1733 | |
| 1734 | if (opt == java_net_SocketOptions_IP_MULTICAST_IF2) { |
| 1735 | /* |
| 1736 | * value is a NetworkInterface. |
| 1737 | * On IPv6 system get the index of the interface and use the |
| 1738 | * IPV6_MULTICAST_IF socket option |
| 1739 | * On IPv4 system extract addr[0] and use the IP_MULTICAST_IF |
| 1740 | * option. For IPv6 both must be done. |
| 1741 | */ |
| 1742 | if (ipv6_supported) { |
| 1743 | static jfieldID ni_indexID; |
| 1744 | struct in_addr in; |
| 1745 | int index; |
| 1746 | |
| 1747 | if (ni_indexID == NULL) { |
| 1748 | jclass c = (*env)->FindClass(env, "java/net/NetworkInterface"); |
| 1749 | CHECK_NULL(c); |
| 1750 | ni_indexID = (*env)->GetFieldID(env, c, "index", "I"); |
| 1751 | CHECK_NULL(ni_indexID); |
| 1752 | } |
| 1753 | index = (*env)->GetIntField(env, value, ni_indexID); |
| 1754 | |
| 1755 | if (setsockopt(fd1, IPPROTO_IPV6, IPV6_MULTICAST_IF, |
| 1756 | (const char*)&index, sizeof(index)) < 0) { |
| 1757 | if (errno == EINVAL && index > 0) { |
| 1758 | JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException", |
| 1759 | "IPV6_MULTICAST_IF failed (interface has IPv4 " |
| 1760 | "address only?)"); |
| 1761 | } else { |
| 1762 | NET_ThrowByNameWithLastError(env, JNU_JAVANETPKG "SocketException", |
| 1763 | "Error setting socket option"); |
| 1764 | } |
| 1765 | return; |
| 1766 | } |
| 1767 | |
| 1768 | /* If there are any IPv4 addresses on this interface then |
| 1769 | * repeat the operation on the IPv4 fd */ |
| 1770 | |
| 1771 | if (getInet4AddrFromIf (env, value, &in) < 0) { |
| 1772 | return; |
| 1773 | } |
| 1774 | if (setsockopt(fd, IPPROTO_IP, IP_MULTICAST_IF, |
| 1775 | (const char*)&in, sizeof(in)) < 0) { |
| 1776 | NET_ThrowByNameWithLastError(env, JNU_JAVANETPKG "SocketException", |
| 1777 | "Error setting socket option"); |
| 1778 | } |
| 1779 | return; |
| 1780 | } else { |
| 1781 | struct in_addr in; |
| 1782 | |
| 1783 | if (getInet4AddrFromIf (env, value, &in) < 0) { |
| 1784 | if ((*env)->ExceptionOccurred(env)) { |
| 1785 | return; |
| 1786 | } |
| 1787 | JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException", |
| 1788 | "no InetAddress instances of requested type"); |
| 1789 | return; |
| 1790 | } |
| 1791 | |
| 1792 | if (setsockopt(fd, IPPROTO_IP, IP_MULTICAST_IF, |
| 1793 | (const char*)&in, sizeof(in)) < 0) { |
| 1794 | NET_ThrowByNameWithLastError(env, JNU_JAVANETPKG "SocketException", |
| 1795 | "Error setting socket option"); |
| 1796 | } |
| 1797 | return; |
| 1798 | } |
| 1799 | } |
| 1800 | } |
| 1801 | |
| 1802 | /* |
| 1803 | * Class: java_net_TwoStacksPlainDatagramSocketImpl |
| 1804 | * Method: socketSetOption |
| 1805 | * Signature: (ILjava/lang/Object;)V |
| 1806 | */ |
| 1807 | JNIEXPORT void JNICALL |
| 1808 | Java_java_net_TwoStacksPlainDatagramSocketImpl_socketSetOption(JNIEnv *env,jobject this, |
| 1809 | jint opt,jobject value) { |
| 1810 | |
| 1811 | int fd=-1, fd1=-1; |
| 1812 | int levelv4, levelv6, optnamev4, optnamev6, optlen; |
| 1813 | union { |
| 1814 | int i; |
| 1815 | char c; |
| 1816 | } optval; |
| 1817 | int ipv6_supported = ipv6_available(); |
| 1818 | |
| 1819 | fd = getFD(env, this); |
| 1820 | |
| 1821 | if (ipv6_supported) { |
| 1822 | fd1 = getFD1(env, this); |
| 1823 | } |
| 1824 | if (fd < 0 && fd1 < 0) { |
| 1825 | JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException", "socket closed"); |
| 1826 | return; |
| 1827 | } |
| 1828 | |
| 1829 | if ((opt == java_net_SocketOptions_IP_MULTICAST_IF) || |
| 1830 | (opt == java_net_SocketOptions_IP_MULTICAST_IF2)) { |
| 1831 | |
| 1832 | setMulticastInterface(env, this, fd, fd1, opt, value); |
| 1833 | return; |
| 1834 | } |
| 1835 | |
| 1836 | /* |
| 1837 | * Map the Java level socket option to the platform specific |
| 1838 | * level(s) and option name(s). |
| 1839 | */ |
| 1840 | if (fd1 != -1) { |
| 1841 | if (NET_MapSocketOptionV6(opt, &levelv6, &optnamev6)) { |
| 1842 | JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException", "Invalid option"); |
| 1843 | return; |
| 1844 | } |
| 1845 | } |
| 1846 | if (fd != -1) { |
| 1847 | if (NET_MapSocketOption(opt, &levelv4, &optnamev4)) { |
| 1848 | JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException", "Invalid option"); |
| 1849 | return; |
| 1850 | } |
| 1851 | } |
| 1852 | |
| 1853 | switch (opt) { |
| 1854 | case java_net_SocketOptions_SO_SNDBUF : |
| 1855 | case java_net_SocketOptions_SO_RCVBUF : |
| 1856 | case java_net_SocketOptions_IP_TOS : |
| 1857 | { |
| 1858 | jclass cls; |
| 1859 | jfieldID fid; |
| 1860 | |
| 1861 | cls = (*env)->FindClass(env, "java/lang/Integer"); |
| 1862 | CHECK_NULL(cls); |
| 1863 | fid = (*env)->GetFieldID(env, cls, "value", "I"); |
| 1864 | CHECK_NULL(fid); |
| 1865 | |
| 1866 | optval.i = (*env)->GetIntField(env, value, fid); |
| 1867 | optlen = sizeof(optval.i); |
| 1868 | } |
| 1869 | break; |
| 1870 | |
| 1871 | case java_net_SocketOptions_SO_REUSEADDR: |
| 1872 | case java_net_SocketOptions_SO_BROADCAST: |
| 1873 | case java_net_SocketOptions_IP_MULTICAST_LOOP: |
| 1874 | { |
| 1875 | jclass cls; |
| 1876 | jfieldID fid; |
| 1877 | jboolean on; |
| 1878 | |
| 1879 | cls = (*env)->FindClass(env, "java/lang/Boolean"); |
| 1880 | CHECK_NULL(cls); |
| 1881 | fid = (*env)->GetFieldID(env, cls, "value", "Z"); |
| 1882 | CHECK_NULL(fid); |
| 1883 | |
| 1884 | on = (*env)->GetBooleanField(env, value, fid); |
| 1885 | optval.i = (on ? 1 : 0); |
| 1886 | /* |
| 1887 | * setLoopbackMode (true) disables IP_MULTICAST_LOOP rather |
| 1888 | * than enabling it. |
| 1889 | */ |
| 1890 | if (opt == java_net_SocketOptions_IP_MULTICAST_LOOP) { |
| 1891 | optval.i = !optval.i; |
| 1892 | } |
| 1893 | optlen = sizeof(optval.i); |
| 1894 | } |
| 1895 | break; |
| 1896 | |
| 1897 | default : |
| 1898 | JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException", |
| 1899 | "Socket option not supported by PlainDatagramSocketImp"); |
| 1900 | break; |
| 1901 | |
| 1902 | } |
| 1903 | |
| 1904 | if (fd1 != -1) { |
| 1905 | if (NET_SetSockOpt(fd1, levelv6, optnamev6, (void *)&optval, optlen) < 0) { |
| 1906 | NET_ThrowCurrent(env, "setsockopt IPv6"); |
| 1907 | return; |
| 1908 | } |
| 1909 | } |
| 1910 | if (fd != -1) { |
| 1911 | if (NET_SetSockOpt(fd, levelv4, optnamev4, (void *)&optval, optlen) < 0) { |
| 1912 | NET_ThrowCurrent(env, "setsockopt"); |
| 1913 | return; |
| 1914 | } |
| 1915 | } |
| 1916 | } |
| 1917 | |
| 1918 | /* |
| 1919 | * Return the multicast interface: |
| 1920 | * |
| 1921 | * SocketOptions.IP_MULTICAST_IF |
| 1922 | * IPv4: Query IPPROTO_IP/IP_MULTICAST_IF |
| 1923 | * Create InetAddress |
| 1924 | * IP_MULTICAST_IF returns struct ip_mreqn on 2.2 |
| 1925 | * kernel but struct in_addr on 2.4 kernel |
| 1926 | * IPv6: Query IPPROTO_IPV6 / IPV6_MULTICAST_IF or |
| 1927 | * obtain from impl is Linux 2.2 kernel |
| 1928 | * If index == 0 return InetAddress representing |
| 1929 | * anyLocalAddress. |
| 1930 | * If index > 0 query NetworkInterface by index |
| 1931 | * and returns addrs[0] |
| 1932 | * |
| 1933 | * SocketOptions.IP_MULTICAST_IF2 |
| 1934 | * IPv4: Query IPPROTO_IP/IP_MULTICAST_IF |
| 1935 | * Query NetworkInterface by IP address and |
| 1936 | * return the NetworkInterface that the address |
| 1937 | * is bound too. |
| 1938 | * IPv6: Query IPPROTO_IPV6 / IPV6_MULTICAST_IF |
| 1939 | * (except Linux .2 kernel) |
| 1940 | * Query NetworkInterface by index and |
| 1941 | * return NetworkInterface. |
| 1942 | */ |
| 1943 | jobject getMulticastInterface(JNIEnv *env, jobject this, int fd, int fd1, jint opt) { |
| 1944 | jboolean isIPV4 = !ipv6_available() || fd1 == -1; |
| 1945 | |
| 1946 | /* |
| 1947 | * IPv4 implementation |
| 1948 | */ |
| 1949 | if (isIPV4) { |
| 1950 | static jclass inet4_class; |
| 1951 | static jmethodID inet4_ctrID; |
| 1952 | static jfieldID inet4_addrID; |
| 1953 | |
| 1954 | static jclass ni_class; |
| 1955 | static jmethodID ni_ctrID; |
| 1956 | static jfieldID ni_indexID; |
| 1957 | static jfieldID ni_addrsID; |
| 1958 | |
| 1959 | jobjectArray addrArray; |
| 1960 | jobject addr; |
| 1961 | jobject ni; |
| 1962 | |
| 1963 | struct in_addr in; |
| 1964 | struct in_addr *inP = ∈ |
| 1965 | int len = sizeof(struct in_addr); |
| 1966 | |
| 1967 | if (getsockopt(fd, IPPROTO_IP, IP_MULTICAST_IF, |
| 1968 | (char *)inP, &len) < 0) { |
| 1969 | NET_ThrowByNameWithLastError(env, JNU_JAVANETPKG "SocketException", |
| 1970 | "Error getting socket option"); |
| 1971 | return NULL; |
| 1972 | } |
| 1973 | |
| 1974 | /* |
| 1975 | * Construct and populate an Inet4Address |
| 1976 | */ |
| 1977 | if (inet4_class == NULL) { |
| 1978 | jclass c = (*env)->FindClass(env, "java/net/Inet4Address"); |
| 1979 | CHECK_NULL_RETURN(c, NULL); |
| 1980 | inet4_ctrID = (*env)->GetMethodID(env, c, "<init>", "()V"); |
| 1981 | CHECK_NULL_RETURN(inet4_ctrID, NULL); |
| 1982 | inet4_addrID = (*env)->GetFieldID(env, c, "address", "I"); |
| 1983 | CHECK_NULL_RETURN(inet4_addrID, NULL); |
| 1984 | inet4_class = (*env)->NewGlobalRef(env, c); |
| 1985 | CHECK_NULL_RETURN(inet4_class, NULL); |
| 1986 | } |
| 1987 | addr = (*env)->NewObject(env, inet4_class, inet4_ctrID, 0); |
| 1988 | CHECK_NULL_RETURN(addr, NULL); |
| 1989 | |
| 1990 | (*env)->SetIntField(env, addr, inet4_addrID, ntohl(in.s_addr)); |
| 1991 | |
| 1992 | /* |
| 1993 | * For IP_MULTICAST_IF return InetAddress |
| 1994 | */ |
| 1995 | if (opt == java_net_SocketOptions_IP_MULTICAST_IF) { |
| 1996 | return addr; |
| 1997 | } |
| 1998 | |
| 1999 | /* |
| 2000 | * For IP_MULTICAST_IF2 we get the NetworkInterface for |
| 2001 | * this address and return it |
| 2002 | */ |
| 2003 | if (ni_class == NULL) { |
| 2004 | jclass c = (*env)->FindClass(env, "java/net/NetworkInterface"); |
| 2005 | CHECK_NULL_RETURN(c, NULL); |
| 2006 | ni_ctrID = (*env)->GetMethodID(env, c, "<init>", "()V"); |
| 2007 | CHECK_NULL_RETURN(ni_ctrID, NULL); |
| 2008 | ni_indexID = (*env)->GetFieldID(env, c, "index", "I"); |
| 2009 | CHECK_NULL_RETURN(ni_indexID, NULL); |
| 2010 | ni_addrsID = (*env)->GetFieldID(env, c, "addrs", |
| 2011 | "[Ljava/net/InetAddress;"); |
| 2012 | CHECK_NULL_RETURN(ni_addrsID, NULL); |
| 2013 | ni_class = (*env)->NewGlobalRef(env, c); |
| 2014 | CHECK_NULL_RETURN(ni_class, NULL); |
| 2015 | } |
| 2016 | ni = Java_java_net_NetworkInterface_getByInetAddress0(env, ni_class, addr); |
| 2017 | if (ni) { |
| 2018 | return ni; |
| 2019 | } |
| 2020 | |
| 2021 | /* |
| 2022 | * The address doesn't appear to be bound at any known |
| 2023 | * NetworkInterface. Therefore we construct a NetworkInterface |
| 2024 | * with this address. |
| 2025 | */ |
| 2026 | ni = (*env)->NewObject(env, ni_class, ni_ctrID, 0); |
| 2027 | CHECK_NULL_RETURN(ni, NULL); |
| 2028 | |
| 2029 | (*env)->SetIntField(env, ni, ni_indexID, -1); |
| 2030 | addrArray = (*env)->NewObjectArray(env, 1, inet4_class, NULL); |
| 2031 | CHECK_NULL_RETURN(addrArray, NULL); |
| 2032 | (*env)->SetObjectArrayElement(env, addrArray, 0, addr); |
| 2033 | (*env)->SetObjectField(env, ni, ni_addrsID, addrArray); |
| 2034 | return ni; |
| 2035 | } |
| 2036 | |
| 2037 | |
| 2038 | /* |
| 2039 | * IPv6 implementation |
| 2040 | */ |
| 2041 | if ((opt == java_net_SocketOptions_IP_MULTICAST_IF) || |
| 2042 | (opt == java_net_SocketOptions_IP_MULTICAST_IF2)) { |
| 2043 | |
| 2044 | static jclass ni_class; |
| 2045 | static jmethodID ni_ctrID; |
| 2046 | static jfieldID ni_indexID; |
| 2047 | static jfieldID ni_addrsID; |
| 2048 | static jclass ia_class; |
| 2049 | static jmethodID ia_anyLocalAddressID; |
| 2050 | |
| 2051 | int index; |
| 2052 | int len = sizeof(index); |
| 2053 | |
| 2054 | jobjectArray addrArray; |
| 2055 | jobject addr; |
| 2056 | jobject ni; |
| 2057 | |
| 2058 | { |
| 2059 | if (getsockopt(fd1, IPPROTO_IPV6, IPV6_MULTICAST_IF, |
| 2060 | (char*)&index, &len) < 0) { |
| 2061 | NET_ThrowByNameWithLastError(env, JNU_JAVANETPKG "SocketException", |
| 2062 | "Error getting socket option"); |
| 2063 | return NULL; |
| 2064 | } |
| 2065 | } |
| 2066 | |
| 2067 | if (ni_class == NULL) { |
| 2068 | jclass c = (*env)->FindClass(env, "java/net/NetworkInterface"); |
| 2069 | CHECK_NULL_RETURN(c, NULL); |
| 2070 | ni_ctrID = (*env)->GetMethodID(env, c, "<init>", "()V"); |
| 2071 | CHECK_NULL_RETURN(ni_ctrID, NULL); |
| 2072 | ni_indexID = (*env)->GetFieldID(env, c, "index", "I"); |
| 2073 | CHECK_NULL_RETURN(ni_indexID, NULL); |
| 2074 | ni_addrsID = (*env)->GetFieldID(env, c, "addrs", |
| 2075 | "[Ljava/net/InetAddress;"); |
| 2076 | CHECK_NULL_RETURN(ni_addrsID, NULL); |
| 2077 | |
| 2078 | ia_class = (*env)->FindClass(env, "java/net/InetAddress"); |
| 2079 | CHECK_NULL_RETURN(ia_class, NULL); |
| 2080 | ia_class = (*env)->NewGlobalRef(env, ia_class); |
| 2081 | CHECK_NULL_RETURN(ia_class, NULL); |
| 2082 | ia_anyLocalAddressID = (*env)->GetStaticMethodID(env, |
| 2083 | ia_class, |
| 2084 | "anyLocalAddress", |
| 2085 | "()Ljava/net/InetAddress;"); |
| 2086 | CHECK_NULL_RETURN(ia_anyLocalAddressID, NULL); |
| 2087 | ni_class = (*env)->NewGlobalRef(env, c); |
| 2088 | CHECK_NULL_RETURN(ni_class, NULL); |
| 2089 | } |
| 2090 | |
| 2091 | /* |
| 2092 | * If multicast to a specific interface then return the |
| 2093 | * interface (for IF2) or the any address on that interface |
| 2094 | * (for IF). |
| 2095 | */ |
| 2096 | if (index > 0) { |
| 2097 | ni = Java_java_net_NetworkInterface_getByIndex(env, ni_class, |
| 2098 | index); |
| 2099 | if (ni == NULL) { |
| 2100 | char errmsg[255]; |
| 2101 | sprintf(errmsg, |
| 2102 | "IPV6_MULTICAST_IF returned index to unrecognized interface: %d", |
| 2103 | index); |
| 2104 | JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException", errmsg); |
| 2105 | return NULL; |
| 2106 | } |
| 2107 | |
| 2108 | /* |
| 2109 | * For IP_MULTICAST_IF2 return the NetworkInterface |
| 2110 | */ |
| 2111 | if (opt == java_net_SocketOptions_IP_MULTICAST_IF2) { |
| 2112 | return ni; |
| 2113 | } |
| 2114 | |
| 2115 | /* |
| 2116 | * For IP_MULTICAST_IF return addrs[0] |
| 2117 | */ |
| 2118 | addrArray = (*env)->GetObjectField(env, ni, ni_addrsID); |
| 2119 | if ((*env)->GetArrayLength(env, addrArray) < 1) { |
| 2120 | JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException", |
| 2121 | "IPV6_MULTICAST_IF returned interface without IP bindings"); |
| 2122 | return NULL; |
| 2123 | } |
| 2124 | |
| 2125 | addr = (*env)->GetObjectArrayElement(env, addrArray, 0); |
| 2126 | return addr; |
| 2127 | } |
| 2128 | |
| 2129 | /* |
| 2130 | * Multicast to any address - return anyLocalAddress |
| 2131 | * or a NetworkInterface with addrs[0] set to anyLocalAddress |
| 2132 | */ |
| 2133 | |
| 2134 | addr = (*env)->CallStaticObjectMethod(env, ia_class, ia_anyLocalAddressID, |
| 2135 | NULL); |
| 2136 | if (opt == java_net_SocketOptions_IP_MULTICAST_IF) { |
| 2137 | return addr; |
| 2138 | } |
| 2139 | |
| 2140 | ni = (*env)->NewObject(env, ni_class, ni_ctrID, 0); |
| 2141 | CHECK_NULL_RETURN(ni, NULL); |
| 2142 | (*env)->SetIntField(env, ni, ni_indexID, -1); |
| 2143 | addrArray = (*env)->NewObjectArray(env, 1, ia_class, NULL); |
| 2144 | CHECK_NULL_RETURN(addrArray, NULL); |
| 2145 | (*env)->SetObjectArrayElement(env, addrArray, 0, addr); |
| 2146 | (*env)->SetObjectField(env, ni, ni_addrsID, addrArray); |
| 2147 | return ni; |
| 2148 | } |
| 2149 | return NULL; |
| 2150 | } |
| 2151 | /* |
| 2152 | * Returns relevant info as a jint. |
| 2153 | * |
| 2154 | * Class: java_net_TwoStacksPlainDatagramSocketImpl |
| 2155 | * Method: socketGetOption |
| 2156 | * Signature: (I)Ljava/lang/Object; |
| 2157 | */ |
| 2158 | JNIEXPORT jobject JNICALL |
| 2159 | Java_java_net_TwoStacksPlainDatagramSocketImpl_socketGetOption(JNIEnv *env, jobject this, |
| 2160 | jint opt) { |
| 2161 | |
| 2162 | int fd=-1, fd1=-1; |
| 2163 | int level, optname, optlen; |
| 2164 | union { |
| 2165 | int i; |
| 2166 | } optval; |
| 2167 | int ipv6_supported = ipv6_available(); |
| 2168 | |
| 2169 | fd = getFD(env, this); |
| 2170 | if (ipv6_supported) { |
| 2171 | fd1 = getFD1(env, this); |
| 2172 | } |
| 2173 | |
| 2174 | if (fd < 0 && fd1 < 0) { |
| 2175 | JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException", |
| 2176 | "Socket closed"); |
| 2177 | return NULL; |
| 2178 | } |
| 2179 | |
| 2180 | /* |
| 2181 | * Handle IP_MULTICAST_IF separately |
| 2182 | */ |
| 2183 | if (opt == java_net_SocketOptions_IP_MULTICAST_IF || |
| 2184 | opt == java_net_SocketOptions_IP_MULTICAST_IF2) { |
| 2185 | return getMulticastInterface(env, this, fd, fd1, opt); |
| 2186 | } |
| 2187 | |
| 2188 | if (opt == java_net_SocketOptions_SO_BINDADDR) { |
| 2189 | /* find out local IP address */ |
| 2190 | SOCKETADDRESS him; |
| 2191 | int len = 0; |
| 2192 | int port; |
| 2193 | jobject iaObj; |
| 2194 | |
| 2195 | len = sizeof (struct sockaddr_in); |
| 2196 | |
| 2197 | if (fd == -1) { |
| 2198 | fd = fd1; /* must be IPv6 only */ |
| 2199 | len = sizeof (struct SOCKADDR_IN6); |
| 2200 | } |
| 2201 | |
| 2202 | if (getsockname(fd, (struct sockaddr *)&him, &len) == -1) { |
| 2203 | NET_ThrowByNameWithLastError(env, JNU_JAVANETPKG "SocketException", |
| 2204 | "Error getting socket name"); |
| 2205 | return NULL; |
| 2206 | } |
| 2207 | iaObj = NET_SockaddrToInetAddress(env, (struct sockaddr *)&him, &port); |
| 2208 | |
| 2209 | return iaObj; |
| 2210 | } |
| 2211 | |
| 2212 | /* |
| 2213 | * Map the Java level socket option to the platform specific |
| 2214 | * level and option name. |
| 2215 | */ |
| 2216 | if (NET_MapSocketOption(opt, &level, &optname)) { |
| 2217 | JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException", "Invalid option"); |
| 2218 | return NULL; |
| 2219 | } |
| 2220 | |
| 2221 | if (fd == -1) { |
| 2222 | if (NET_MapSocketOptionV6(opt, &level, &optname)) { |
| 2223 | JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException", "Invalid option"); |
| 2224 | return NULL; |
| 2225 | } |
| 2226 | fd = fd1; /* must be IPv6 only */ |
| 2227 | } |
| 2228 | |
| 2229 | optlen = sizeof(optval.i); |
| 2230 | if (NET_GetSockOpt(fd, level, optname, (void *)&optval, &optlen) < 0) { |
| 2231 | char errmsg[255]; |
| 2232 | sprintf(errmsg, "error getting socket option: %s\n", strerror(errno)); |
| 2233 | JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException", errmsg); |
| 2234 | return NULL; |
| 2235 | } |
| 2236 | |
| 2237 | switch (opt) { |
| 2238 | case java_net_SocketOptions_SO_BROADCAST: |
| 2239 | case java_net_SocketOptions_SO_REUSEADDR: |
| 2240 | return createBoolean(env, optval.i); |
| 2241 | |
| 2242 | case java_net_SocketOptions_IP_MULTICAST_LOOP: |
| 2243 | /* getLoopbackMode() returns true if IP_MULTICAST_LOOP is disabled */ |
| 2244 | return createBoolean(env, !optval.i); |
| 2245 | |
| 2246 | case java_net_SocketOptions_SO_SNDBUF: |
| 2247 | case java_net_SocketOptions_SO_RCVBUF: |
| 2248 | case java_net_SocketOptions_IP_TOS: |
| 2249 | return createInteger(env, optval.i); |
| 2250 | |
| 2251 | default : |
| 2252 | JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException", |
| 2253 | "Socket option not supported by TwoStacksPlainDatagramSocketImpl"); |
| 2254 | return NULL; |
| 2255 | |
| 2256 | } |
| 2257 | } |
| 2258 | |
| 2259 | /* |
| 2260 | * Class: java_net_TwoStacksPlainDatagramSocketImpl |
| 2261 | * Method: setTimeToLive |
| 2262 | * Signature: (I)V |
| 2263 | */ |
| 2264 | JNIEXPORT void JNICALL |
| 2265 | Java_java_net_TwoStacksPlainDatagramSocketImpl_setTimeToLive(JNIEnv *env, jobject this, |
| 2266 | jint ttl) { |
| 2267 | |
| 2268 | jobject fdObj = (*env)->GetObjectField(env, this, pdsi_fdID); |
| 2269 | jobject fd1Obj = (*env)->GetObjectField(env, this, pdsi_fd1ID); |
| 2270 | int fd = -1, fd1 = -1; |
| 2271 | int ittl = (int)ttl; |
| 2272 | |
| 2273 | if (IS_NULL(fdObj) && IS_NULL(fd1Obj)) { |
| 2274 | JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException", |
| 2275 | "Socket closed"); |
| 2276 | return; |
| 2277 | } else { |
| 2278 | if (!IS_NULL(fdObj)) { |
| 2279 | fd = (*env)->GetIntField(env, fdObj, IO_fd_fdID); |
| 2280 | } |
| 2281 | if (!IS_NULL(fd1Obj)) { |
| 2282 | fd1 = (*env)->GetIntField(env, fd1Obj, IO_fd_fdID); |
| 2283 | } |
| 2284 | } |
| 2285 | |
| 2286 | /* setsockopt to be correct ttl */ |
| 2287 | if (fd >= 0) { |
| 2288 | if (NET_SetSockOpt(fd, IPPROTO_IP, IP_MULTICAST_TTL, (char*)&ittl, |
| 2289 | sizeof (ittl)) < 0) { |
| 2290 | NET_ThrowCurrent(env, "set IP_MULTICAST_TTL failed"); |
| 2291 | } |
| 2292 | } |
| 2293 | |
| 2294 | if (fd1 >= 0) { |
| 2295 | if (NET_SetSockOpt(fd1, IPPROTO_IPV6, IPV6_MULTICAST_HOPS, (char *)&ittl, |
| 2296 | sizeof(ittl)) <0) { |
| 2297 | NET_ThrowCurrent(env, "set IPV6_MULTICAST_HOPS failed"); |
| 2298 | } |
| 2299 | } |
| 2300 | } |
| 2301 | |
| 2302 | /* |
| 2303 | * Class: java_net_TwoStacksPlainDatagramSocketImpl |
| 2304 | * Method: setTTL |
| 2305 | * Signature: (B)V |
| 2306 | */ |
| 2307 | JNIEXPORT void JNICALL |
| 2308 | Java_java_net_TwoStacksPlainDatagramSocketImpl_setTTL(JNIEnv *env, jobject this, |
| 2309 | jbyte ttl) { |
| 2310 | Java_java_net_TwoStacksPlainDatagramSocketImpl_setTimeToLive(env, this, |
| 2311 | (jint)ttl & 0xFF); |
| 2312 | } |
| 2313 | |
| 2314 | /* |
| 2315 | * Class: java_net_TwoStacksPlainDatagramSocketImpl |
| 2316 | * Method: getTimeToLive |
| 2317 | * Signature: ()I |
| 2318 | */ |
| 2319 | JNIEXPORT jint JNICALL |
| 2320 | Java_java_net_TwoStacksPlainDatagramSocketImpl_getTimeToLive(JNIEnv *env, jobject this) { |
| 2321 | jobject fdObj = (*env)->GetObjectField(env, this, pdsi_fdID); |
| 2322 | jobject fd1Obj = (*env)->GetObjectField(env, this, pdsi_fd1ID); |
| 2323 | int fd = -1, fd1 = -1; |
| 2324 | int ttl = 0; |
| 2325 | int len = sizeof(ttl); |
| 2326 | |
| 2327 | if (IS_NULL(fdObj) && IS_NULL(fd1Obj)) { |
| 2328 | JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException", |
| 2329 | "Socket closed"); |
| 2330 | return -1; |
| 2331 | } else { |
| 2332 | if (!IS_NULL(fdObj)) { |
| 2333 | fd = (*env)->GetIntField(env, fdObj, IO_fd_fdID); |
| 2334 | } |
| 2335 | if (!IS_NULL(fd1Obj)) { |
| 2336 | fd1 = (*env)->GetIntField(env, fd1Obj, IO_fd_fdID); |
| 2337 | } |
| 2338 | } |
| 2339 | |
| 2340 | /* getsockopt of ttl */ |
| 2341 | if (fd >= 0) { |
| 2342 | if (NET_GetSockOpt(fd, IPPROTO_IP, IP_MULTICAST_TTL, (char*)&ttl, &len) < 0) { |
| 2343 | NET_ThrowCurrent(env, "get IP_MULTICAST_TTL failed"); |
| 2344 | return -1; |
| 2345 | } |
| 2346 | return (jint)ttl; |
| 2347 | } |
| 2348 | if (fd1 >= 0) { |
| 2349 | if (NET_GetSockOpt(fd1, IPPROTO_IPV6, IPV6_MULTICAST_HOPS, (char*)&ttl, &len) < 0) { |
| 2350 | NET_ThrowCurrent(env, "get IP_MULTICAST_TTL failed"); |
| 2351 | return -1; |
| 2352 | } |
| 2353 | return (jint)ttl; |
| 2354 | } |
| 2355 | return -1; |
| 2356 | } |
| 2357 | |
| 2358 | /* |
| 2359 | * Class: java_net_TwoStacksPlainDatagramSocketImpl |
| 2360 | * Method: getTTL |
| 2361 | * Signature: ()B |
| 2362 | */ |
| 2363 | JNIEXPORT jbyte JNICALL |
| 2364 | Java_java_net_TwoStacksPlainDatagramSocketImpl_getTTL(JNIEnv *env, jobject this) { |
| 2365 | int result = Java_java_net_TwoStacksPlainDatagramSocketImpl_getTimeToLive(env, this); |
| 2366 | |
| 2367 | return (jbyte)result; |
| 2368 | } |
| 2369 | |
| 2370 | /* join/leave the named group on the named interface, or if no interface specified |
| 2371 | * then the interface set with setInterfac(), or the default interface otherwise */ |
| 2372 | |
| 2373 | static void mcast_join_leave(JNIEnv *env, jobject this, |
| 2374 | jobject iaObj, jobject niObj, |
| 2375 | jboolean join) |
| 2376 | { |
| 2377 | jobject fdObj = (*env)->GetObjectField(env, this, pdsi_fdID); |
| 2378 | jobject fd1Obj = (*env)->GetObjectField(env, this, pdsi_fd1ID); |
| 2379 | jint fd = -1, fd1 = -1; |
| 2380 | |
| 2381 | SOCKETADDRESS name; |
| 2382 | struct ip_mreq mname; |
| 2383 | struct ipv6_mreq mname6; |
| 2384 | |
| 2385 | struct in_addr in; |
| 2386 | DWORD ifindex; |
| 2387 | |
| 2388 | int len, family; |
| 2389 | int ipv6_supported = ipv6_available(); |
| 2390 | int cmd ; |
| 2391 | |
| 2392 | if (IS_NULL(fdObj) && IS_NULL(fd1Obj)) { |
| 2393 | JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException", |
| 2394 | "Socket closed"); |
| 2395 | return; |
| 2396 | } |
| 2397 | if (!IS_NULL(fdObj)) { |
| 2398 | fd = (*env)->GetIntField(env, fdObj, IO_fd_fdID); |
| 2399 | } |
| 2400 | if (ipv6_supported && !IS_NULL(fd1Obj)) { |
| 2401 | fd1 = (*env)->GetIntField(env, fd1Obj, IO_fd_fdID); |
| 2402 | } |
| 2403 | |
| 2404 | if (IS_NULL(iaObj)) { |
| 2405 | JNU_ThrowNullPointerException(env, "address"); |
| 2406 | return; |
| 2407 | } |
| 2408 | |
| 2409 | if (NET_InetAddressToSockaddr(env, iaObj, 0, (struct sockaddr *)&name, &len, JNI_FALSE) != 0) { |
| 2410 | return; |
| 2411 | } |
| 2412 | |
| 2413 | /* Set the multicast group address in the ip_mreq field |
| 2414 | * eventually this check should be done by the security manager |
| 2415 | */ |
| 2416 | family = name.him.sa_family; |
| 2417 | |
| 2418 | if (family == AF_INET) { |
| 2419 | int address = name.him4.sin_addr.s_addr; |
| 2420 | if (!IN_MULTICAST(ntohl(address))) { |
| 2421 | JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException", "not in multicast"); |
| 2422 | return; |
| 2423 | } |
| 2424 | mname.imr_multiaddr.s_addr = address; |
| 2425 | if (fd < 0) { |
| 2426 | JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException", "Can't join an IPv4 group on an IPv6 only socket"); |
| 2427 | return; |
| 2428 | } |
| 2429 | if (IS_NULL(niObj)) { |
| 2430 | len = sizeof (in); |
| 2431 | if (NET_GetSockOpt(fd, IPPROTO_IP, IP_MULTICAST_IF, |
| 2432 | (char *)&in, &len) < 0) { |
| 2433 | NET_ThrowCurrent(env, "get IP_MULTICAST_IF failed"); |
| 2434 | return; |
| 2435 | } |
| 2436 | mname.imr_interface.s_addr = in.s_addr; |
| 2437 | } else { |
| 2438 | if (getInet4AddrFromIf (env, niObj, &mname.imr_interface) != 0) { |
| 2439 | NET_ThrowCurrent(env, "no Inet4Address associated with interface"); |
| 2440 | return; |
| 2441 | } |
| 2442 | } |
| 2443 | |
| 2444 | cmd = join ? IP_ADD_MEMBERSHIP: IP_DROP_MEMBERSHIP; |
| 2445 | |
| 2446 | /* Join the multicast group */ |
| 2447 | if (NET_SetSockOpt(fd, IPPROTO_IP, cmd, (char *) &mname, sizeof (mname)) < 0) { |
| 2448 | if (WSAGetLastError() == WSAENOBUFS) { |
| 2449 | JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException", |
| 2450 | "IP_ADD_MEMBERSHIP failed (out of hardware filters?)"); |
| 2451 | } else { |
| 2452 | JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException","error setting options"); |
| 2453 | } |
| 2454 | } |
| 2455 | } else /* AF_INET6 */ { |
| 2456 | if (ipv6_supported) { |
| 2457 | struct in6_addr *address; |
| 2458 | address = &name.him6.sin6_addr; |
| 2459 | if (!IN6_IS_ADDR_MULTICAST(address)) { |
| 2460 | JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException", "not in6 multicast"); |
| 2461 | return; |
| 2462 | } |
| 2463 | mname6.ipv6mr_multiaddr = *address; |
| 2464 | } else { |
| 2465 | JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException", "IPv6 not supported"); |
| 2466 | return; |
| 2467 | } |
| 2468 | if (fd1 < 0) { |
| 2469 | JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException", "Can't join an IPv6 group on a IPv4 socket"); |
| 2470 | return; |
| 2471 | } |
| 2472 | if (IS_NULL(niObj)) { |
| 2473 | len = sizeof (ifindex); |
| 2474 | if (NET_GetSockOpt(fd1, IPPROTO_IPV6, IPV6_MULTICAST_IF, &ifindex, &len) < 0) { |
| 2475 | NET_ThrowCurrent(env, "get IPV6_MULTICAST_IF failed"); |
| 2476 | return; |
| 2477 | } |
| 2478 | } else { |
| 2479 | ifindex = getIndexFromIf (env, niObj); |
| 2480 | if (ifindex == -1) { |
| 2481 | NET_ThrowCurrent(env, "get ifindex failed"); |
| 2482 | return; |
| 2483 | } |
| 2484 | } |
| 2485 | mname6.ipv6mr_interface = ifindex; |
| 2486 | cmd = join ? IPV6_ADD_MEMBERSHIP: IPV6_DROP_MEMBERSHIP; |
| 2487 | |
| 2488 | /* Join the multicast group */ |
| 2489 | if (NET_SetSockOpt(fd1, IPPROTO_IPV6, cmd, (char *) &mname6, sizeof (mname6)) < 0) { |
| 2490 | if (WSAGetLastError() == WSAENOBUFS) { |
| 2491 | JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException", |
| 2492 | "IP_ADD_MEMBERSHIP failed (out of hardware filters?)"); |
| 2493 | } else { |
| 2494 | JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException","error setting options"); |
| 2495 | } |
| 2496 | } |
| 2497 | } |
| 2498 | |
| 2499 | return; |
| 2500 | } |
| 2501 | |
| 2502 | /* |
| 2503 | * Class: java_net_TwoStacksPlainDatagramSocketImpl |
| 2504 | * Method: join |
| 2505 | * Signature: (Ljava/net/InetAddress;)V |
| 2506 | */ |
| 2507 | JNIEXPORT void JNICALL |
| 2508 | Java_java_net_TwoStacksPlainDatagramSocketImpl_join(JNIEnv *env, jobject this, |
| 2509 | jobject iaObj, jobject niObj) |
| 2510 | { |
| 2511 | mcast_join_leave (env, this, iaObj, niObj, JNI_TRUE); |
| 2512 | } |
| 2513 | |
| 2514 | /* |
| 2515 | * Class: java_net_TwoStacksPlainDatagramSocketImpl |
| 2516 | * Method: leave |
| 2517 | * Signature: (Ljava/net/InetAddress;)V |
| 2518 | */ |
| 2519 | JNIEXPORT void JNICALL |
| 2520 | Java_java_net_TwoStacksPlainDatagramSocketImpl_leave(JNIEnv *env, jobject this, |
| 2521 | jobject iaObj, jobject niObj) |
| 2522 | { |
| 2523 | mcast_join_leave (env, this, iaObj, niObj, JNI_FALSE); |
| 2524 | } |