J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2000-2006 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 <errno.h> |
| 27 | #include <strings.h> |
| 28 | #include <netinet/in.h> |
| 29 | #include <stdlib.h> |
| 30 | #include <string.h> |
| 31 | #include <sys/types.h> |
| 32 | #include <sys/socket.h> |
| 33 | #include <arpa/inet.h> |
| 34 | #include <net/if.h> |
| 35 | #include <net/if_arp.h> |
| 36 | #ifdef __solaris__ |
| 37 | #include <sys/dlpi.h> |
| 38 | #include <fcntl.h> |
| 39 | #include <stropts.h> |
| 40 | #endif |
| 41 | #ifdef __linux__ |
| 42 | #include <sys/ioctl.h> |
| 43 | #include <bits/ioctls.h> |
| 44 | #include <linux/sockios.h> |
| 45 | #include <sys/utsname.h> |
| 46 | #include <stdio.h> |
| 47 | #else |
| 48 | #include <sys/sockio.h> |
| 49 | #endif |
| 50 | |
| 51 | #ifdef __linux__ |
| 52 | #define ifr_index ifr_ifindex |
| 53 | #define _PATH_PROCNET_IFINET6 "/proc/net/if_inet6" |
| 54 | #endif |
| 55 | |
| 56 | #include "jvm.h" |
| 57 | #include "jni_util.h" |
| 58 | #include "net_util.h" |
| 59 | |
| 60 | typedef struct _netaddr { |
| 61 | struct sockaddr *addr; |
| 62 | struct sockaddr *brdcast; |
| 63 | short mask; |
| 64 | int family; /* to make searches simple */ |
| 65 | struct _netaddr *next; |
| 66 | } netaddr; |
| 67 | |
| 68 | typedef struct _netif { |
| 69 | char *name; |
| 70 | int index; |
| 71 | char virtual; |
| 72 | netaddr *addr; |
| 73 | struct _netif *childs; |
| 74 | struct _netif *next; |
| 75 | } netif; |
| 76 | |
| 77 | /************************************************************************ |
| 78 | * NetworkInterface |
| 79 | */ |
| 80 | |
| 81 | #include "java_net_NetworkInterface.h" |
| 82 | |
| 83 | /************************************************************************ |
| 84 | * NetworkInterface |
| 85 | */ |
| 86 | jclass ni_class; |
| 87 | jfieldID ni_nameID; |
| 88 | jfieldID ni_indexID; |
| 89 | jfieldID ni_descID; |
| 90 | jfieldID ni_addrsID; |
| 91 | jfieldID ni_bindsID; |
| 92 | jfieldID ni_virutalID; |
| 93 | jfieldID ni_childsID; |
| 94 | jfieldID ni_parentID; |
| 95 | jmethodID ni_ctrID; |
| 96 | |
| 97 | static jclass ni_iacls; |
| 98 | static jclass ni_ia4cls; |
| 99 | static jclass ni_ia6cls; |
| 100 | static jclass ni_ibcls; |
| 101 | static jmethodID ni_ia4ctrID; |
| 102 | static jmethodID ni_ia6ctrID; |
| 103 | static jmethodID ni_ibctrID; |
| 104 | static jfieldID ni_iaaddressID; |
| 105 | static jfieldID ni_iafamilyID; |
| 106 | static jfieldID ni_ia6ipaddressID; |
| 107 | static jfieldID ni_ibaddressID; |
| 108 | static jfieldID ni_ib4broadcastID; |
| 109 | static jfieldID ni_ib4maskID; |
| 110 | |
| 111 | static jobject createNetworkInterface(JNIEnv *env, netif *ifs); |
| 112 | |
| 113 | static netif *enumInterfaces(JNIEnv *env); |
| 114 | static netif *enumIPv4Interfaces(JNIEnv *env, netif *ifs); |
| 115 | #ifdef AF_INET6 |
| 116 | static netif *enumIPv6Interfaces(JNIEnv *env, netif *ifs); |
| 117 | #endif |
| 118 | |
| 119 | static netif *addif(JNIEnv *env, netif *ifs, char *if_name, int index, |
| 120 | int family, struct sockaddr *new_addrP, int new_addrlen, |
| 121 | short prefix); |
| 122 | static void freeif(netif *ifs); |
| 123 | static struct sockaddr *getBroadcast(JNIEnv *env, const char *ifname); |
| 124 | static short getSubnet(JNIEnv *env, const char *ifname); |
| 125 | |
| 126 | /* |
| 127 | * Class: java_net_NetworkInterface |
| 128 | * Method: init |
| 129 | * Signature: ()V |
| 130 | */ |
| 131 | JNIEXPORT void JNICALL |
| 132 | Java_java_net_NetworkInterface_init(JNIEnv *env, jclass cls) { |
| 133 | ni_class = (*env)->FindClass(env,"java/net/NetworkInterface"); |
| 134 | ni_class = (*env)->NewGlobalRef(env, ni_class); |
| 135 | ni_nameID = (*env)->GetFieldID(env, ni_class,"name", "Ljava/lang/String;"); |
| 136 | ni_indexID = (*env)->GetFieldID(env, ni_class, "index", "I"); |
| 137 | ni_addrsID = (*env)->GetFieldID(env, ni_class, "addrs", "[Ljava/net/InetAddress;"); |
| 138 | ni_bindsID = (*env)->GetFieldID(env, ni_class, "bindings", "[Ljava/net/InterfaceAddress;"); |
| 139 | ni_descID = (*env)->GetFieldID(env, ni_class, "displayName", "Ljava/lang/String;"); |
| 140 | ni_virutalID = (*env)->GetFieldID(env, ni_class, "virtual", "Z"); |
| 141 | ni_childsID = (*env)->GetFieldID(env, ni_class, "childs", "[Ljava/net/NetworkInterface;"); |
| 142 | ni_parentID = (*env)->GetFieldID(env, ni_class, "parent", "Ljava/net/NetworkInterface;"); |
| 143 | ni_ctrID = (*env)->GetMethodID(env, ni_class, "<init>", "()V"); |
| 144 | |
| 145 | ni_iacls = (*env)->FindClass(env, "java/net/InetAddress"); |
| 146 | ni_iacls = (*env)->NewGlobalRef(env, ni_iacls); |
| 147 | ni_ia4cls = (*env)->FindClass(env, "java/net/Inet4Address"); |
| 148 | ni_ia4cls = (*env)->NewGlobalRef(env, ni_ia4cls); |
| 149 | ni_ia6cls = (*env)->FindClass(env, "java/net/Inet6Address"); |
| 150 | ni_ia6cls = (*env)->NewGlobalRef(env, ni_ia6cls); |
| 151 | ni_ibcls = (*env)->FindClass(env, "java/net/InterfaceAddress"); |
| 152 | ni_ibcls = (*env)->NewGlobalRef(env, ni_ibcls); |
| 153 | ni_ia4ctrID = (*env)->GetMethodID(env, ni_ia4cls, "<init>", "()V"); |
| 154 | ni_ia6ctrID = (*env)->GetMethodID(env, ni_ia6cls, "<init>", "()V"); |
| 155 | ni_ibctrID = (*env)->GetMethodID(env, ni_ibcls, "<init>", "()V"); |
| 156 | ni_iaaddressID = (*env)->GetFieldID(env, ni_iacls, "address", "I"); |
| 157 | ni_iafamilyID = (*env)->GetFieldID(env, ni_iacls, "family", "I"); |
| 158 | ni_ia6ipaddressID = (*env)->GetFieldID(env, ni_ia6cls, "ipaddress", "[B"); |
| 159 | ni_ibaddressID = (*env)->GetFieldID(env, ni_ibcls, "address", "Ljava/net/InetAddress;"); |
| 160 | ni_ib4broadcastID = (*env)->GetFieldID(env, ni_ibcls, "broadcast", "Ljava/net/Inet4Address;"); |
| 161 | ni_ib4maskID = (*env)->GetFieldID(env, ni_ibcls, "maskLength", "S"); |
| 162 | } |
| 163 | |
| 164 | |
| 165 | /* |
| 166 | * Class: java_net_NetworkInterface |
| 167 | * Method: getByName0 |
| 168 | * Signature: (Ljava/lang/String;)Ljava/net/NetworkInterface; |
| 169 | */ |
| 170 | JNIEXPORT jobject JNICALL Java_java_net_NetworkInterface_getByName0 |
| 171 | (JNIEnv *env, jclass cls, jstring name) { |
| 172 | |
| 173 | netif *ifs, *curr; |
| 174 | jboolean isCopy; |
| 175 | const char* name_utf = (*env)->GetStringUTFChars(env, name, &isCopy); |
| 176 | jobject obj = NULL; |
| 177 | |
| 178 | ifs = enumInterfaces(env); |
| 179 | if (ifs == NULL) { |
| 180 | return NULL; |
| 181 | } |
| 182 | |
| 183 | /* |
| 184 | * Search the list of interface based on name |
| 185 | */ |
| 186 | curr = ifs; |
| 187 | while (curr != NULL) { |
| 188 | if (strcmp(name_utf, curr->name) == 0) { |
| 189 | break; |
| 190 | } |
| 191 | curr = curr->next; |
| 192 | } |
| 193 | |
| 194 | /* if found create a NetworkInterface */ |
| 195 | if (curr != NULL) {; |
| 196 | obj = createNetworkInterface(env, curr); |
| 197 | } |
| 198 | |
| 199 | /* release the UTF string and interface list */ |
| 200 | (*env)->ReleaseStringUTFChars(env, name, name_utf); |
| 201 | freeif(ifs); |
| 202 | |
| 203 | return obj; |
| 204 | } |
| 205 | |
| 206 | |
| 207 | /* |
| 208 | * Class: java_net_NetworkInterface |
| 209 | * Method: getByIndex |
| 210 | * Signature: (Ljava/lang/String;)Ljava/net/NetworkInterface; |
| 211 | */ |
| 212 | JNIEXPORT jobject JNICALL Java_java_net_NetworkInterface_getByIndex |
| 213 | (JNIEnv *env, jclass cls, jint index) { |
| 214 | |
| 215 | netif *ifs, *curr; |
| 216 | jobject obj = NULL; |
| 217 | |
| 218 | if (index <= 0) { |
| 219 | return NULL; |
| 220 | } |
| 221 | |
| 222 | ifs = enumInterfaces(env); |
| 223 | if (ifs == NULL) { |
| 224 | return NULL; |
| 225 | } |
| 226 | |
| 227 | /* |
| 228 | * Search the list of interface based on index |
| 229 | */ |
| 230 | curr = ifs; |
| 231 | while (curr != NULL) { |
| 232 | if (index == curr->index) { |
| 233 | break; |
| 234 | } |
| 235 | curr = curr->next; |
| 236 | } |
| 237 | |
| 238 | /* if found create a NetworkInterface */ |
| 239 | if (curr != NULL) {; |
| 240 | obj = createNetworkInterface(env, curr); |
| 241 | } |
| 242 | |
| 243 | freeif(ifs); |
| 244 | return obj; |
| 245 | } |
| 246 | |
| 247 | /* |
| 248 | * Class: java_net_NetworkInterface |
| 249 | * Method: getByInetAddress0 |
| 250 | * Signature: (Ljava/net/InetAddress;)Ljava/net/NetworkInterface; |
| 251 | */ |
| 252 | JNIEXPORT jobject JNICALL Java_java_net_NetworkInterface_getByInetAddress0 |
| 253 | (JNIEnv *env, jclass cls, jobject iaObj) { |
| 254 | |
| 255 | netif *ifs, *curr; |
| 256 | int family = (*env)->GetIntField(env, iaObj, ni_iafamilyID) == IPv4? |
| 257 | AF_INET : AF_INET6; |
| 258 | jobject obj = NULL; |
| 259 | jboolean match = JNI_FALSE; |
| 260 | |
| 261 | ifs = enumInterfaces(env); |
| 262 | if (ifs == NULL) { |
| 263 | return NULL; |
| 264 | } |
| 265 | |
| 266 | curr = ifs; |
| 267 | while (curr != NULL) { |
| 268 | netaddr *addrP = curr->addr; |
| 269 | |
| 270 | /* |
| 271 | * Iterate through each address on the interface |
| 272 | */ |
| 273 | while (addrP != NULL) { |
| 274 | |
| 275 | if (family == addrP->family) { |
| 276 | if (family == AF_INET) { |
| 277 | int address1 = htonl(((struct sockaddr_in*)addrP->addr)->sin_addr.s_addr); |
| 278 | int address2 = (*env)->GetIntField(env, iaObj, ni_iaaddressID); |
| 279 | |
| 280 | if (address1 == address2) { |
| 281 | match = JNI_TRUE; |
| 282 | break; |
| 283 | } |
| 284 | } |
| 285 | |
| 286 | #ifdef AF_INET6 |
| 287 | if (family == AF_INET6) { |
| 288 | jbyte *bytes = (jbyte *)&(((struct sockaddr_in6*)addrP->addr)->sin6_addr); |
| 289 | jbyteArray ipaddress = (*env)->GetObjectField(env, iaObj, ni_ia6ipaddressID); |
| 290 | jbyte caddr[16]; |
| 291 | int i; |
| 292 | |
| 293 | (*env)->GetByteArrayRegion(env, ipaddress, 0, 16, caddr); |
| 294 | i = 0; |
| 295 | while (i < 16) { |
| 296 | if (caddr[i] != bytes[i]) { |
| 297 | break; |
| 298 | } |
| 299 | i++; |
| 300 | } |
| 301 | if (i >= 16) { |
| 302 | match = JNI_TRUE; |
| 303 | break; |
| 304 | } |
| 305 | } |
| 306 | #endif |
| 307 | |
| 308 | } |
| 309 | |
| 310 | if (match) { |
| 311 | break; |
| 312 | } |
| 313 | addrP = addrP->next; |
| 314 | } |
| 315 | |
| 316 | if (match) { |
| 317 | break; |
| 318 | } |
| 319 | curr = curr->next; |
| 320 | } |
| 321 | |
| 322 | /* if found create a NetworkInterface */ |
| 323 | if (match) {; |
| 324 | obj = createNetworkInterface(env, curr); |
| 325 | } |
| 326 | |
| 327 | freeif(ifs); |
| 328 | return obj; |
| 329 | } |
| 330 | |
| 331 | |
| 332 | /* |
| 333 | * Class: java_net_NetworkInterface |
| 334 | * Method: getAll |
| 335 | * Signature: ()[Ljava/net/NetworkInterface; |
| 336 | */ |
| 337 | JNIEXPORT jobjectArray JNICALL Java_java_net_NetworkInterface_getAll |
| 338 | (JNIEnv *env, jclass cls) { |
| 339 | |
| 340 | netif *ifs, *curr; |
| 341 | jobjectArray netIFArr; |
| 342 | jint arr_index, ifCount; |
| 343 | |
| 344 | ifs = enumInterfaces(env); |
| 345 | if (ifs == NULL) { |
| 346 | return NULL; |
| 347 | } |
| 348 | |
| 349 | /* count the interface */ |
| 350 | ifCount = 0; |
| 351 | curr = ifs; |
| 352 | while (curr != NULL) { |
| 353 | ifCount++; |
| 354 | curr = curr->next; |
| 355 | } |
| 356 | |
| 357 | /* allocate a NetworkInterface array */ |
| 358 | netIFArr = (*env)->NewObjectArray(env, ifCount, cls, NULL); |
| 359 | if (netIFArr == NULL) { |
| 360 | freeif(ifs); |
| 361 | return NULL; |
| 362 | } |
| 363 | |
| 364 | /* |
| 365 | * Iterate through the interfaces, create a NetworkInterface instance |
| 366 | * for each array element and populate the object. |
| 367 | */ |
| 368 | curr = ifs; |
| 369 | arr_index = 0; |
| 370 | while (curr != NULL) { |
| 371 | jobject netifObj; |
| 372 | |
| 373 | netifObj = createNetworkInterface(env, curr); |
| 374 | if (netifObj == NULL) { |
| 375 | freeif(ifs); |
| 376 | return NULL; |
| 377 | } |
| 378 | |
| 379 | /* put the NetworkInterface into the array */ |
| 380 | (*env)->SetObjectArrayElement(env, netIFArr, arr_index++, netifObj); |
| 381 | |
| 382 | curr = curr->next; |
| 383 | } |
| 384 | |
| 385 | freeif(ifs); |
| 386 | return netIFArr; |
| 387 | } |
| 388 | |
| 389 | /* |
| 390 | * Create a NetworkInterface object, populate the name and index, and |
| 391 | * populate the InetAddress array based on the IP addresses for this |
| 392 | * interface. |
| 393 | */ |
| 394 | jobject createNetworkInterface(JNIEnv *env, netif *ifs) |
| 395 | { |
| 396 | jobject netifObj; |
| 397 | jobject name; |
| 398 | jobjectArray addrArr; |
| 399 | jobjectArray bindArr; |
| 400 | jobjectArray childArr; |
| 401 | netaddr *addrs; |
| 402 | jint addr_index, addr_count, bind_index; |
| 403 | jint child_count, child_index; |
| 404 | netaddr *addrP; |
| 405 | netif *childP; |
| 406 | jobject tmp; |
| 407 | |
| 408 | /* |
| 409 | * Create a NetworkInterface object and populate it |
| 410 | */ |
| 411 | netifObj = (*env)->NewObject(env, ni_class, ni_ctrID); |
| 412 | name = (*env)->NewStringUTF(env, ifs->name); |
| 413 | if (netifObj == NULL || name == NULL) { |
| 414 | return NULL; |
| 415 | } |
| 416 | (*env)->SetObjectField(env, netifObj, ni_nameID, name); |
| 417 | (*env)->SetObjectField(env, netifObj, ni_descID, name); |
| 418 | (*env)->SetIntField(env, netifObj, ni_indexID, ifs->index); |
| 419 | (*env)->SetBooleanField(env, netifObj, ni_virutalID, ifs->virtual ? JNI_TRUE : JNI_FALSE); |
| 420 | |
| 421 | /* |
| 422 | * Count the number of address on this interface |
| 423 | */ |
| 424 | addr_count = 0; |
| 425 | addrP = ifs->addr; |
| 426 | while (addrP != NULL) { |
| 427 | addr_count++; |
| 428 | addrP = addrP->next; |
| 429 | } |
| 430 | |
| 431 | /* |
| 432 | * Create the array of InetAddresses |
| 433 | */ |
| 434 | addrArr = (*env)->NewObjectArray(env, addr_count, ni_iacls, NULL); |
| 435 | if (addrArr == NULL) { |
| 436 | return NULL; |
| 437 | } |
| 438 | |
| 439 | bindArr = (*env)->NewObjectArray(env, addr_count, ni_ibcls, NULL); |
| 440 | if (bindArr == NULL) { |
| 441 | return NULL; |
| 442 | } |
| 443 | addrP = ifs->addr; |
| 444 | addr_index = 0; |
| 445 | bind_index = 0; |
| 446 | while (addrP != NULL) { |
| 447 | jobject iaObj = NULL; |
| 448 | jobject ibObj = NULL; |
| 449 | |
| 450 | if (addrP->family == AF_INET) { |
| 451 | iaObj = (*env)->NewObject(env, ni_ia4cls, ni_ia4ctrID); |
| 452 | if (iaObj) { |
| 453 | (*env)->SetIntField(env, iaObj, ni_iaaddressID, |
| 454 | htonl(((struct sockaddr_in*)addrP->addr)->sin_addr.s_addr)); |
| 455 | } |
| 456 | ibObj = (*env)->NewObject(env, ni_ibcls, ni_ibctrID); |
| 457 | if (ibObj) { |
| 458 | (*env)->SetObjectField(env, ibObj, ni_ibaddressID, iaObj); |
| 459 | if (addrP->brdcast) { |
| 460 | jobject ia2Obj = NULL; |
| 461 | ia2Obj = (*env)->NewObject(env, ni_ia4cls, ni_ia4ctrID); |
| 462 | if (ia2Obj) { |
| 463 | (*env)->SetIntField(env, ia2Obj, ni_iaaddressID, |
| 464 | htonl(((struct sockaddr_in*)addrP->brdcast)->sin_addr.s_addr)); |
| 465 | (*env)->SetObjectField(env, ibObj, ni_ib4broadcastID, ia2Obj); |
| 466 | (*env)->SetShortField(env, ibObj, ni_ib4maskID, addrP->mask); |
| 467 | } |
| 468 | } |
| 469 | (*env)->SetObjectArrayElement(env, bindArr, bind_index++, ibObj); |
| 470 | } |
| 471 | } |
| 472 | |
| 473 | #ifdef AF_INET6 |
| 474 | if (addrP->family == AF_INET6) { |
| 475 | int scope=0; |
| 476 | iaObj = (*env)->NewObject(env, ni_ia6cls, ni_ia6ctrID); |
| 477 | if (iaObj) { |
| 478 | jbyteArray ipaddress = (*env)->NewByteArray(env, 16); |
| 479 | if (ipaddress == NULL) { |
| 480 | return NULL; |
| 481 | } |
| 482 | (*env)->SetByteArrayRegion(env, ipaddress, 0, 16, |
| 483 | (jbyte *)&(((struct sockaddr_in6*)addrP->addr)->sin6_addr)); |
| 484 | #ifdef __linux__ |
| 485 | if (!kernelIsV22()) { |
| 486 | scope = ((struct sockaddr_in6*)addrP->addr)->sin6_scope_id; |
| 487 | } |
| 488 | #else |
| 489 | scope = ((struct sockaddr_in6*)addrP->addr)->sin6_scope_id; |
| 490 | #endif |
| 491 | if (scope != 0) { /* zero is default value, no need to set */ |
| 492 | (*env)->SetIntField(env, iaObj, ia6_scopeidID, scope); |
| 493 | (*env)->SetBooleanField(env, iaObj, ia6_scopeidsetID, JNI_TRUE); |
| 494 | (*env)->SetObjectField(env, iaObj, ia6_scopeifnameID, netifObj); |
| 495 | } |
| 496 | (*env)->SetObjectField(env, iaObj, ni_ia6ipaddressID, ipaddress); |
| 497 | } |
| 498 | ibObj = (*env)->NewObject(env, ni_ibcls, ni_ibctrID); |
| 499 | if (ibObj) { |
| 500 | (*env)->SetObjectField(env, ibObj, ni_ibaddressID, iaObj); |
| 501 | (*env)->SetShortField(env, ibObj, ni_ib4maskID, addrP->mask); |
| 502 | (*env)->SetObjectArrayElement(env, bindArr, bind_index++, ibObj); |
| 503 | } |
| 504 | } |
| 505 | #endif |
| 506 | |
| 507 | if (iaObj == NULL) { |
| 508 | return NULL; |
| 509 | } |
| 510 | |
| 511 | (*env)->SetObjectArrayElement(env, addrArr, addr_index++, iaObj); |
| 512 | addrP = addrP->next; |
| 513 | } |
| 514 | |
| 515 | /* |
| 516 | * See if there is any virtual interface attached to this one. |
| 517 | */ |
| 518 | child_count = 0; |
| 519 | childP = ifs->childs; |
| 520 | while (childP) { |
| 521 | child_count++; |
| 522 | childP = childP->next; |
| 523 | } |
| 524 | |
| 525 | childArr = (*env)->NewObjectArray(env, child_count, ni_class, NULL); |
| 526 | if (childArr == NULL) { |
| 527 | return NULL; |
| 528 | } |
| 529 | |
| 530 | /* |
| 531 | * Create the NetworkInterface instances for the sub-interfaces as |
| 532 | * well. |
| 533 | */ |
| 534 | child_index = 0; |
| 535 | childP = ifs->childs; |
| 536 | while(childP) { |
| 537 | tmp = createNetworkInterface(env, childP); |
| 538 | if (tmp == NULL) { |
| 539 | return NULL; |
| 540 | } |
| 541 | (*env)->SetObjectField(env, tmp, ni_parentID, netifObj); |
| 542 | (*env)->SetObjectArrayElement(env, childArr, child_index++, tmp); |
| 543 | childP = childP->next; |
| 544 | } |
| 545 | (*env)->SetObjectField(env, netifObj, ni_addrsID, addrArr); |
| 546 | (*env)->SetObjectField(env, netifObj, ni_bindsID, bindArr); |
| 547 | (*env)->SetObjectField(env, netifObj, ni_childsID, childArr); |
| 548 | |
| 549 | /* return the NetworkInterface */ |
| 550 | return netifObj; |
| 551 | } |
| 552 | |
| 553 | /* |
| 554 | * Enumerates all interfaces |
| 555 | */ |
| 556 | static netif *enumInterfaces(JNIEnv *env) { |
| 557 | netif *ifs; |
| 558 | |
| 559 | /* |
| 560 | * Enumerate IPv4 addresses |
| 561 | */ |
| 562 | ifs = enumIPv4Interfaces(env, NULL); |
| 563 | if (ifs == NULL) { |
| 564 | if ((*env)->ExceptionOccurred(env)) { |
| 565 | return NULL; |
| 566 | } |
| 567 | } |
| 568 | |
| 569 | /* |
| 570 | * If IPv6 is available then enumerate IPv6 addresses. |
| 571 | */ |
| 572 | #ifdef AF_INET6 |
| 573 | if (ipv6_available()) { |
| 574 | ifs = enumIPv6Interfaces(env, ifs); |
| 575 | |
| 576 | if ((*env)->ExceptionOccurred(env)) { |
| 577 | freeif(ifs); |
| 578 | return NULL; |
| 579 | } |
| 580 | } |
| 581 | #endif |
| 582 | |
| 583 | return ifs; |
| 584 | } |
| 585 | |
| 586 | |
| 587 | /* |
| 588 | * Enumerates and returns all IPv4 interfaces |
| 589 | */ |
| 590 | static netif *enumIPv4Interfaces(JNIEnv *env, netif *ifs) { |
| 591 | int sock; |
| 592 | struct ifconf ifc; |
| 593 | struct ifreq *ifreqP; |
| 594 | char *buf; |
| 595 | int numifs; |
| 596 | unsigned i; |
| 597 | unsigned bufsize; |
| 598 | |
| 599 | sock = JVM_Socket(AF_INET, SOCK_DGRAM, 0); |
| 600 | if (sock < 0) { |
| 601 | /* |
| 602 | * If EPROTONOSUPPORT is returned it means we don't have |
| 603 | * IPv4 support so don't throw an exception. |
| 604 | */ |
| 605 | if (errno != EPROTONOSUPPORT) { |
| 606 | NET_ThrowByNameWithLastError(env , JNU_JAVANETPKG "SocketException", |
| 607 | "Socket creation failed"); |
| 608 | } |
| 609 | return ifs; |
| 610 | } |
| 611 | |
| 612 | #ifdef __linux__ |
| 613 | /* need to do a dummy SIOCGIFCONF to determine the buffer size. |
| 614 | * SIOCGIFCOUNT doesn't work |
| 615 | */ |
| 616 | ifc.ifc_buf = NULL; |
| 617 | if (ioctl(sock, SIOCGIFCONF, (char *)&ifc) < 0) { |
| 618 | NET_ThrowByNameWithLastError(env , JNU_JAVANETPKG "SocketException", |
| 619 | "ioctl SIOCGIFCONF failed"); |
| 620 | close(sock); |
| 621 | return ifs; |
| 622 | } |
| 623 | bufsize = ifc.ifc_len; |
| 624 | #else |
| 625 | if (ioctl(sock, SIOCGIFNUM, (char *)&numifs) < 0) { |
| 626 | NET_ThrowByNameWithLastError(env , JNU_JAVANETPKG "SocketException", |
| 627 | "ioctl SIOCGIFNUM failed"); |
| 628 | close(sock); |
| 629 | return ifs; |
| 630 | } |
| 631 | bufsize = numifs * sizeof (struct ifreq); |
| 632 | #endif /* __linux__ */ |
| 633 | |
| 634 | buf = (char *)malloc(bufsize); |
| 635 | if (!buf) { |
| 636 | JNU_ThrowOutOfMemoryError(env, "heap allocation failed"); |
| 637 | (void) close(sock); |
| 638 | return ifs; |
| 639 | } |
| 640 | ifc.ifc_len = bufsize; |
| 641 | ifc.ifc_buf = buf; |
| 642 | if (ioctl(sock, SIOCGIFCONF, (char *)&ifc) < 0) { |
| 643 | NET_ThrowByNameWithLastError(env , JNU_JAVANETPKG "SocketException", |
| 644 | "ioctl SIOCGIFCONF failed"); |
| 645 | (void) close(sock); |
| 646 | (void) free(buf); |
| 647 | return ifs; |
| 648 | } |
| 649 | |
| 650 | /* |
| 651 | * Iterate through each interface |
| 652 | */ |
| 653 | ifreqP = ifc.ifc_req; |
| 654 | for (i=0; i<ifc.ifc_len/sizeof (struct ifreq); i++, ifreqP++) { |
| 655 | int index; |
| 656 | struct ifreq if2; |
| 657 | |
| 658 | memset((char *)&if2, 0, sizeof(if2)); |
| 659 | strcpy(if2.ifr_name, ifreqP->ifr_name); |
| 660 | |
| 661 | /* |
| 662 | * Try to get the interface index |
| 663 | * (Not supported on Solaris 2.6 or 7) |
| 664 | */ |
| 665 | if (ioctl(sock, SIOCGIFINDEX, (char *)&if2) >= 0) { |
| 666 | index = if2.ifr_index; |
| 667 | } else { |
| 668 | index = -1; |
| 669 | } |
| 670 | |
| 671 | /* |
| 672 | * Add to the list |
| 673 | */ |
| 674 | ifs = addif(env, ifs, ifreqP->ifr_name, index, AF_INET, |
| 675 | (struct sockaddr *)&(ifreqP->ifr_addr), |
| 676 | sizeof(struct sockaddr_in), 0); |
| 677 | |
| 678 | /* |
| 679 | * If an exception occurred then free the list |
| 680 | */ |
| 681 | if ((*env)->ExceptionOccurred(env)) { |
| 682 | close(sock); |
| 683 | free(buf); |
| 684 | freeif(ifs); |
| 685 | return NULL; |
| 686 | } |
| 687 | } |
| 688 | |
| 689 | /* |
| 690 | * Free socket and buffer |
| 691 | */ |
| 692 | close(sock); |
| 693 | free(buf); |
| 694 | return ifs; |
| 695 | } |
| 696 | |
| 697 | |
| 698 | #if defined(__solaris__) && defined(AF_INET6) |
| 699 | /* |
| 700 | * Enumerates and returns all IPv6 interfaces on Solaris |
| 701 | */ |
| 702 | static netif *enumIPv6Interfaces(JNIEnv *env, netif *ifs) { |
| 703 | int sock; |
| 704 | struct lifconf ifc; |
| 705 | struct lifreq *ifr; |
| 706 | int n; |
| 707 | char *buf; |
| 708 | struct lifnum numifs; |
| 709 | unsigned bufsize; |
| 710 | |
| 711 | sock = JVM_Socket(AF_INET6, SOCK_DGRAM, 0); |
| 712 | if (sock < 0) { |
| 713 | NET_ThrowByNameWithLastError(env , JNU_JAVANETPKG "SocketException", |
| 714 | "Failed to create IPv6 socket"); |
| 715 | return ifs; |
| 716 | } |
| 717 | |
| 718 | /* |
| 719 | * Get the interface count |
| 720 | */ |
| 721 | numifs.lifn_family = AF_UNSPEC; |
| 722 | numifs.lifn_flags = 0; |
| 723 | if (ioctl(sock, SIOCGLIFNUM, (char *)&numifs) < 0) { |
| 724 | NET_ThrowByNameWithLastError(env , JNU_JAVANETPKG "SocketException", |
| 725 | "ioctl SIOCGLIFNUM failed"); |
| 726 | close(sock); |
| 727 | return ifs; |
| 728 | } |
| 729 | |
| 730 | /* |
| 731 | * Enumerate the interface configurations |
| 732 | */ |
| 733 | bufsize = numifs.lifn_count * sizeof (struct lifreq); |
| 734 | buf = (char *)malloc(bufsize); |
| 735 | if (!buf) { |
| 736 | JNU_ThrowOutOfMemoryError(env, "heap allocation failed"); |
| 737 | (void) close(sock); |
| 738 | return ifs; |
| 739 | } |
| 740 | ifc.lifc_family = AF_UNSPEC; |
| 741 | ifc.lifc_flags = 0; |
| 742 | ifc.lifc_len = bufsize; |
| 743 | ifc.lifc_buf = buf; |
| 744 | if (ioctl(sock, SIOCGLIFCONF, (char *)&ifc) < 0) { |
| 745 | NET_ThrowByNameWithLastError(env , JNU_JAVANETPKG "SocketException", |
| 746 | "ioctl SIOCGLIFCONF failed"); |
| 747 | close(sock); |
| 748 | free(buf); |
| 749 | return ifs; |
| 750 | } |
| 751 | |
| 752 | /* |
| 753 | * Iterate through each interface |
| 754 | */ |
| 755 | ifr = ifc.lifc_req; |
| 756 | for (n=0; n<numifs.lifn_count; n++, ifr++) { |
| 757 | int index = -1; |
| 758 | struct lifreq if2; |
| 759 | |
| 760 | /* |
| 761 | * Ignore non-IPv6 addresses |
| 762 | */ |
| 763 | if (ifr->lifr_addr.ss_family != AF_INET6) { |
| 764 | continue; |
| 765 | } |
| 766 | |
| 767 | /* |
| 768 | * Get the index |
| 769 | */ |
| 770 | memset((char *)&if2, 0, sizeof(if2)); |
| 771 | strcpy(if2.lifr_name, ifr->lifr_name); |
| 772 | if (ioctl(sock, SIOCGLIFINDEX, (char *)&if2) >= 0) { |
| 773 | struct sockaddr_in6 *s6= (struct sockaddr_in6 *)&(ifr->lifr_addr); |
| 774 | index = if2.lifr_index; |
| 775 | s6->sin6_scope_id = index; |
| 776 | } |
| 777 | |
| 778 | /* add to the list */ |
| 779 | ifs = addif(env, ifs, ifr->lifr_name, index, AF_INET6, |
| 780 | (struct sockaddr *)&(ifr->lifr_addr), |
| 781 | sizeof(struct sockaddr_in6), (short) ifr->lifr_addrlen); |
| 782 | |
| 783 | /* |
| 784 | * If an exception occurred we return |
| 785 | */ |
| 786 | if ((*env)->ExceptionOccurred(env)) { |
| 787 | close(sock); |
| 788 | free(buf); |
| 789 | return ifs; |
| 790 | } |
| 791 | |
| 792 | } |
| 793 | |
| 794 | close(sock); |
| 795 | free(buf); |
| 796 | return ifs; |
| 797 | |
| 798 | } |
| 799 | #endif |
| 800 | |
| 801 | |
| 802 | #if defined(__linux__) && defined(AF_INET6) |
| 803 | /* |
| 804 | * Enumerates and returns all IPv6 interfaces on Linux |
| 805 | */ |
| 806 | static netif *enumIPv6Interfaces(JNIEnv *env, netif *ifs) { |
| 807 | FILE *f; |
| 808 | char addr6[40], devname[20]; |
| 809 | char addr6p[8][5]; |
| 810 | int plen, scope, dad_status, if_idx; |
| 811 | uint8_t ipv6addr[16]; |
| 812 | |
| 813 | if ((f = fopen(_PATH_PROCNET_IFINET6, "r")) != NULL) { |
| 814 | while (fscanf(f, "%4s%4s%4s%4s%4s%4s%4s%4s %02x %02x %02x %02x %20s\n", |
| 815 | addr6p[0], addr6p[1], addr6p[2], addr6p[3], |
| 816 | addr6p[4], addr6p[5], addr6p[6], addr6p[7], |
| 817 | &if_idx, &plen, &scope, &dad_status, devname) != EOF) { |
| 818 | struct netif *ifs_ptr = NULL; |
| 819 | struct netif *last_ptr = NULL; |
| 820 | struct sockaddr_in6 addr; |
| 821 | |
| 822 | sprintf(addr6, "%s:%s:%s:%s:%s:%s:%s:%s", |
| 823 | addr6p[0], addr6p[1], addr6p[2], addr6p[3], |
| 824 | addr6p[4], addr6p[5], addr6p[6], addr6p[7]); |
| 825 | inet_pton(AF_INET6, addr6, ipv6addr); |
| 826 | |
| 827 | memset(&addr, 0, sizeof(struct sockaddr_in6)); |
| 828 | memcpy((void*)addr.sin6_addr.s6_addr, (const void*)ipv6addr, 16); |
| 829 | addr.sin6_scope_id = if_idx; |
| 830 | |
| 831 | ifs = addif(env, ifs, devname, if_idx, AF_INET6, |
| 832 | (struct sockaddr *)&addr, |
| 833 | sizeof(struct sockaddr_in6), plen); |
| 834 | |
| 835 | /* |
| 836 | * If an exception occurred then return the list as is. |
| 837 | */ |
| 838 | if ((*env)->ExceptionOccurred(env)) { |
| 839 | fclose(f); |
| 840 | return ifs; |
| 841 | } |
| 842 | } |
| 843 | fclose(f); |
| 844 | } |
| 845 | return ifs; |
| 846 | } |
| 847 | #endif |
| 848 | |
| 849 | |
| 850 | /* |
| 851 | * Free an interface list (including any attached addresses) |
| 852 | */ |
| 853 | void freeif(netif *ifs) { |
| 854 | netif *currif = ifs; |
| 855 | netif *child = NULL; |
| 856 | |
| 857 | while (currif != NULL) { |
| 858 | netaddr *addrP = currif->addr; |
| 859 | while (addrP != NULL) { |
| 860 | netaddr *next = addrP->next; |
| 861 | if (addrP->addr != NULL) |
| 862 | free(addrP->addr); |
| 863 | if (addrP->brdcast != NULL) |
| 864 | free(addrP->brdcast); |
| 865 | free(addrP); |
| 866 | addrP = next; |
| 867 | } |
| 868 | |
| 869 | free(currif->name); |
| 870 | |
| 871 | /* |
| 872 | * Don't forget to free the sub-interfaces. |
| 873 | */ |
| 874 | if (currif->childs != NULL) { |
| 875 | freeif(currif->childs); |
| 876 | } |
| 877 | |
| 878 | ifs = currif->next; |
| 879 | free(currif); |
| 880 | currif = ifs; |
| 881 | } |
| 882 | } |
| 883 | |
| 884 | /* |
| 885 | * Add an interface to the list. If known interface just link |
| 886 | * a new netaddr onto the list. If new interface create new |
| 887 | * netif structure. |
| 888 | */ |
| 889 | netif *addif(JNIEnv *env, netif *ifs, char *if_name, int index, int family, |
| 890 | struct sockaddr *new_addrP, int new_addrlen, short prefix) { |
| 891 | netif *currif = ifs, *parent; |
| 892 | netaddr *addrP; |
| 893 | #ifdef LIFNAMSIZ |
| 894 | char name[LIFNAMSIZ]; |
| 895 | char vname[LIFNAMSIZ]; |
| 896 | #else |
| 897 | char name[IFNAMSIZ]; |
| 898 | char vname[IFNAMSIZ]; |
| 899 | #endif |
| 900 | char *unit; |
| 901 | int isVirtual = 0; |
| 902 | |
| 903 | /* |
| 904 | * If the interface name is a logical interface then we |
| 905 | * remove the unit number so that we have the physical |
| 906 | * interface (eg: hme0:1 -> hme0). NetworkInterface |
| 907 | * currently doesn't have any concept of physical vs. |
| 908 | * logical interfaces. |
| 909 | */ |
| 910 | strcpy(name, if_name); |
| 911 | |
| 912 | /* |
| 913 | * Create and populate the netaddr node. If allocation fails |
| 914 | * return an un-updated list. |
| 915 | */ |
| 916 | addrP = (netaddr *)malloc(sizeof(netaddr)); |
| 917 | if (addrP) { |
| 918 | addrP->addr = (struct sockaddr *)malloc(new_addrlen); |
| 919 | if (addrP->addr == NULL) { |
| 920 | free(addrP); |
| 921 | addrP = NULL; |
| 922 | } |
| 923 | } |
| 924 | if (addrP == NULL) { |
| 925 | JNU_ThrowOutOfMemoryError(env, "heap allocation failed"); |
| 926 | return ifs; /* return untouched list */ |
| 927 | } |
| 928 | memcpy(addrP->addr, new_addrP, new_addrlen); |
| 929 | addrP->family = family; |
| 930 | |
| 931 | addrP->brdcast = NULL; |
| 932 | addrP->mask = prefix; |
| 933 | if (family == AF_INET) { |
| 934 | /* |
| 935 | * Deal with brodcast addr & subnet mask |
| 936 | */ |
| 937 | addrP->brdcast = getBroadcast(env, name); |
| 938 | if (addrP->brdcast) { |
| 939 | addrP->mask = getSubnet(env, name); |
| 940 | } |
| 941 | } |
| 942 | |
| 943 | vname[0] = 0; |
| 944 | unit = strchr(name, ':'); |
| 945 | if (unit != NULL) { |
| 946 | /** |
| 947 | * This is a virtual interface. If we are able to access the parent |
| 948 | * we need to create a new entry if it doesn't exist yet *and* update |
| 949 | * the 'parent' interface with the new records. |
| 950 | */ |
| 951 | struct ifreq if2; |
| 952 | int sock; |
| 953 | int len; |
| 954 | |
| 955 | sock = JVM_Socket(AF_INET, SOCK_DGRAM, 0); |
| 956 | if (sock < 0) { |
| 957 | NET_ThrowByNameWithLastError(env, JNU_JAVANETPKG "SocketException", |
| 958 | "Socket creation failed"); |
| 959 | return ifs; /* return untouched list */ |
| 960 | } |
| 961 | |
| 962 | len = unit - name; |
| 963 | if (len > 0) { |
| 964 | // temporarily use vname to hold the parent name of the interface |
| 965 | // instead of creating another buffer. |
| 966 | memcpy(&vname, name, len); |
| 967 | vname[len] = '\0'; |
| 968 | |
| 969 | memset((char *) &if2, 0, sizeof(if2)); |
| 970 | strcpy(if2.ifr_name, vname); |
| 971 | |
| 972 | if (ioctl(sock, SIOCGIFFLAGS, (char *)&if2) >= 0) { |
| 973 | // Got access to parent, so create it if necessary. |
| 974 | strcpy(vname, name); |
| 975 | *unit = '\0'; |
| 976 | } |
| 977 | else { |
| 978 | // failed to access parent interface do not create parent. |
| 979 | // We are a virtual interface with no parent. |
| 980 | isVirtual = 1; |
| 981 | |
| 982 | vname[0] = 0; |
| 983 | } |
| 984 | } |
| 985 | close(sock); |
| 986 | } |
| 987 | |
| 988 | /* |
| 989 | * Check if this is a "new" interface. Use the interface |
| 990 | * name for matching because index isn't supported on |
| 991 | * Solaris 2.6 & 7. |
| 992 | */ |
| 993 | while (currif != NULL) { |
| 994 | if (strcmp(name, currif->name) == 0) { |
| 995 | break; |
| 996 | } |
| 997 | currif = currif->next; |
| 998 | } |
| 999 | |
| 1000 | /* |
| 1001 | * If "new" then create an netif structure and |
| 1002 | * insert it onto the list. |
| 1003 | */ |
| 1004 | if (currif == NULL) { |
| 1005 | currif = (netif *)malloc(sizeof(netif)); |
| 1006 | if (currif) { |
| 1007 | currif->name = strdup(name); |
| 1008 | if (currif->name == NULL) { |
| 1009 | free(currif); |
| 1010 | currif = NULL; |
| 1011 | } |
| 1012 | } |
| 1013 | if (currif == NULL) { |
| 1014 | JNU_ThrowOutOfMemoryError(env, "heap allocation failed"); |
| 1015 | return ifs; |
| 1016 | } |
| 1017 | currif->index = index; |
| 1018 | currif->addr = NULL; |
| 1019 | currif->childs = NULL; |
| 1020 | currif->virtual = isVirtual; |
| 1021 | currif->next = ifs; |
| 1022 | ifs = currif; |
| 1023 | } |
| 1024 | |
| 1025 | /* |
| 1026 | * Finally insert the address on the interface |
| 1027 | */ |
| 1028 | addrP->next = currif->addr; |
| 1029 | currif->addr = addrP; |
| 1030 | |
| 1031 | parent = currif; |
| 1032 | |
| 1033 | /** |
| 1034 | * Let's deal with the virtual interface now. |
| 1035 | */ |
| 1036 | if (vname[0]) { |
| 1037 | netaddr *tmpaddr; |
| 1038 | |
| 1039 | currif = parent->childs; |
| 1040 | |
| 1041 | while (currif != NULL) { |
| 1042 | if (strcmp(vname, currif->name) == 0) { |
| 1043 | break; |
| 1044 | } |
| 1045 | currif = currif->next; |
| 1046 | } |
| 1047 | if (currif == NULL) { |
| 1048 | currif = (netif *)malloc(sizeof(netif)); |
| 1049 | if (currif) { |
| 1050 | currif->name = strdup(vname); |
| 1051 | if (currif->name == NULL) { |
| 1052 | free(currif); |
| 1053 | currif = NULL; |
| 1054 | } |
| 1055 | } |
| 1056 | if (currif == NULL) { |
| 1057 | JNU_ThrowOutOfMemoryError(env, "heap allocation failed"); |
| 1058 | return ifs; |
| 1059 | } |
| 1060 | currif->index = index; |
| 1061 | currif->addr = NULL; |
| 1062 | /* Need to duplicate the addr entry? */ |
| 1063 | currif->virtual = 1; |
| 1064 | currif->childs = NULL; |
| 1065 | currif->next = parent->childs; |
| 1066 | parent->childs = currif; |
| 1067 | } |
| 1068 | |
| 1069 | tmpaddr = (netaddr *) malloc(sizeof(netaddr)); |
| 1070 | if (tmpaddr == NULL) { |
| 1071 | JNU_ThrowOutOfMemoryError(env, "heap allocation failed"); |
| 1072 | return ifs; |
| 1073 | } |
| 1074 | memcpy(tmpaddr, addrP, sizeof(netaddr)); |
| 1075 | /** |
| 1076 | * Let's duplicate the address and broadcast address structures |
| 1077 | * if there are any. |
| 1078 | */ |
| 1079 | if (addrP->addr != NULL) { |
| 1080 | tmpaddr->addr = malloc(new_addrlen); |
| 1081 | if (tmpaddr->addr != NULL) |
| 1082 | memcpy(tmpaddr->addr, addrP->addr, new_addrlen); |
| 1083 | } |
| 1084 | if (addrP->brdcast != NULL) { |
| 1085 | tmpaddr->brdcast = malloc(new_addrlen); |
| 1086 | if (tmpaddr->brdcast != NULL) |
| 1087 | memcpy(tmpaddr->brdcast, addrP->brdcast, new_addrlen); |
| 1088 | } |
| 1089 | tmpaddr->next = currif->addr; |
| 1090 | currif->addr = tmpaddr; |
| 1091 | } |
| 1092 | |
| 1093 | return ifs; |
| 1094 | } |
| 1095 | |
| 1096 | /** |
| 1097 | * Get flags from a NetworkInterface. |
| 1098 | */ |
| 1099 | static short getFlags(JNIEnv *env, jstring name) { |
| 1100 | int sock; |
| 1101 | struct ifreq if2; |
| 1102 | jboolean isCopy; |
| 1103 | const char* name_utf; |
| 1104 | short ret = -1; |
| 1105 | |
| 1106 | sock = JVM_Socket(AF_INET, SOCK_DGRAM, 0); |
| 1107 | if (sock < 0) { |
| 1108 | NET_ThrowByNameWithLastError(env, JNU_JAVANETPKG "SocketException", |
| 1109 | "Socket creation failed"); |
| 1110 | return -1; |
| 1111 | } |
| 1112 | |
| 1113 | name_utf = (*env)->GetStringUTFChars(env, name, &isCopy); |
| 1114 | memset((char *) &if2, 0, sizeof(if2)); |
| 1115 | strcpy(if2.ifr_name, name_utf); |
| 1116 | |
| 1117 | if (ioctl(sock, SIOCGIFFLAGS, (char *)&if2) >= 0) { |
| 1118 | ret = if2.ifr_flags; |
| 1119 | } else { |
| 1120 | NET_ThrowByNameWithLastError(env, JNU_JAVANETPKG "SocketException", |
| 1121 | "IOCTL failed"); |
| 1122 | ret = -1; |
| 1123 | } |
| 1124 | close(sock); |
| 1125 | /* release the UTF string and interface list */ |
| 1126 | (*env)->ReleaseStringUTFChars(env, name, name_utf); |
| 1127 | |
| 1128 | return ret; |
| 1129 | } |
| 1130 | |
| 1131 | /** |
| 1132 | * Returns the IPv4 broadcast address of a named interface, if it exists. |
| 1133 | * Returns 0 if it doesn't have one. |
| 1134 | */ |
| 1135 | static struct sockaddr *getBroadcast(JNIEnv *env, const char *ifname) { |
| 1136 | int sock; |
| 1137 | unsigned int mask; |
| 1138 | struct sockaddr *ret = NULL; |
| 1139 | struct ifreq if2; |
| 1140 | short flag; |
| 1141 | |
| 1142 | sock = JVM_Socket(AF_INET, SOCK_DGRAM, 0); |
| 1143 | if (sock < 0) { |
| 1144 | NET_ThrowByNameWithLastError(env, JNU_JAVANETPKG "SocketException", |
| 1145 | "Socket creation failed"); |
| 1146 | return ret; |
| 1147 | } |
| 1148 | |
| 1149 | memset((char *) &if2, 0, sizeof(if2)); |
| 1150 | strcpy(if2.ifr_name, ifname); |
| 1151 | /* Let's make sure the interface does have a broadcast address */ |
| 1152 | if (ioctl(sock, SIOCGIFFLAGS, (char *)&if2) >= 0) { |
| 1153 | flag = if2.ifr_flags; |
| 1154 | } else { |
| 1155 | NET_ThrowByNameWithLastError(env, JNU_JAVANETPKG "SocketException", |
| 1156 | "IOCTL failed"); |
| 1157 | } |
| 1158 | if (flag & IFF_BROADCAST) { |
| 1159 | /* It does, let's retrieve it*/ |
| 1160 | if (ioctl(sock, SIOCGIFBRDADDR, (char *)&if2) >= 0) { |
| 1161 | ret = (struct sockaddr*) malloc(sizeof(struct sockaddr)); |
| 1162 | memcpy(ret, &if2.ifr_broadaddr, sizeof(struct sockaddr)); |
| 1163 | } else { |
| 1164 | NET_ThrowByNameWithLastError(env, JNU_JAVANETPKG "SocketException", |
| 1165 | "IOCTL failed"); |
| 1166 | } |
| 1167 | } |
| 1168 | close(sock); |
| 1169 | return ret; |
| 1170 | } |
| 1171 | |
| 1172 | /** |
| 1173 | * Returns the IPv4 subnet prefix length (aka subnet mask) for the named |
| 1174 | * interface, if it has one, otherwise return -1. |
| 1175 | */ |
| 1176 | static short getSubnet(JNIEnv *env, const char *ifname) { |
| 1177 | int sock; |
| 1178 | unsigned int mask; |
| 1179 | short ret; |
| 1180 | struct ifreq if2; |
| 1181 | |
| 1182 | sock = JVM_Socket(AF_INET, SOCK_DGRAM, 0); |
| 1183 | if (sock < 0) { |
| 1184 | NET_ThrowByNameWithLastError(env, JNU_JAVANETPKG "SocketException", |
| 1185 | "Socket creation failed"); |
| 1186 | return -1; |
| 1187 | } |
| 1188 | |
| 1189 | memset((char *) &if2, 0, sizeof(if2)); |
| 1190 | strcpy(if2.ifr_name, ifname); |
| 1191 | if (ioctl(sock, SIOCGIFNETMASK, (char *)&if2) >= 0) { |
| 1192 | mask = ntohl(((struct sockaddr_in*)&(if2.ifr_addr))->sin_addr.s_addr); |
| 1193 | ret = 0; |
| 1194 | while (mask) { |
| 1195 | mask <<= 1; |
| 1196 | ret++; |
| 1197 | } |
| 1198 | close(sock); |
| 1199 | return ret; |
| 1200 | } |
| 1201 | NET_ThrowByNameWithLastError(env, JNU_JAVANETPKG "SocketException", |
| 1202 | "IOCTL failed"); |
| 1203 | close(sock); |
| 1204 | return -1; |
| 1205 | } |
| 1206 | |
| 1207 | #ifdef __solaris__ |
| 1208 | #define DEV_PREFIX "/dev/" |
| 1209 | |
| 1210 | /** |
| 1211 | * Solaris specific DLPI code to get hardware address from a device. |
| 1212 | * Unfortunately, at least up to Solaris X, you have to have special |
| 1213 | * privileges (i.e. be root). |
| 1214 | */ |
| 1215 | static int getMacFromDevice(JNIEnv *env, const char* ifname, unsigned char* retbuf) { |
| 1216 | char style1dev[MAXPATHLEN]; |
| 1217 | int fd; |
| 1218 | dl_phys_addr_req_t dlpareq; |
| 1219 | dl_phys_addr_ack_t *dlpaack; |
| 1220 | struct strbuf msg; |
| 1221 | char buf[128]; |
| 1222 | int flags = 0; |
| 1223 | |
| 1224 | /** |
| 1225 | * Device is in /dev |
| 1226 | * e.g.: /dev/bge0 |
| 1227 | */ |
| 1228 | strcpy(style1dev, DEV_PREFIX); |
| 1229 | strcat(style1dev, ifname); |
| 1230 | if ((fd = open(style1dev, O_RDWR)) == -1) { |
| 1231 | /* |
| 1232 | * Can't open it. We probably are missing the privilege. |
| 1233 | * We'll have to try something else |
| 1234 | */ |
| 1235 | return 0; |
| 1236 | } |
| 1237 | dlpareq.dl_primitive = DL_PHYS_ADDR_REQ; |
| 1238 | dlpareq.dl_addr_type = DL_CURR_PHYS_ADDR; |
| 1239 | msg.buf = (char *)&dlpareq; |
| 1240 | msg.len = DL_PHYS_ADDR_REQ_SIZE; |
| 1241 | if (putmsg(fd, &msg, NULL, 0) < 0) { |
| 1242 | NET_ThrowByNameWithLastError(env, JNU_JAVANETPKG "SocketException", |
| 1243 | "putmsg failed"); |
| 1244 | return -1; |
| 1245 | } |
| 1246 | dlpaack = (dl_phys_addr_ack_t *)buf; |
| 1247 | msg.buf = (char *)buf; |
| 1248 | msg.len = 0; |
| 1249 | msg.maxlen = sizeof (buf); |
| 1250 | if (getmsg(fd, &msg, NULL, &flags) < 0) { |
| 1251 | NET_ThrowByNameWithLastError(env, JNU_JAVANETPKG "SocketException", |
| 1252 | "getmsg failed"); |
| 1253 | return -1; |
| 1254 | } |
| 1255 | if (msg.len < DL_PHYS_ADDR_ACK_SIZE || |
| 1256 | dlpaack->dl_primitive != DL_PHYS_ADDR_ACK) { |
| 1257 | JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException", |
| 1258 | "Couldn't obtain phys addr\n"); |
| 1259 | return -1; |
| 1260 | } |
| 1261 | |
| 1262 | memcpy(retbuf, &buf[dlpaack->dl_addr_offset], dlpaack->dl_addr_length); |
| 1263 | return dlpaack->dl_addr_length; |
| 1264 | } |
| 1265 | #endif |
| 1266 | |
| 1267 | /** |
| 1268 | * Get the Hardware address (usually MAC address) for the named interface. |
| 1269 | * return puts the data in buf, and returns the length, in byte, of the |
| 1270 | * MAC address. Returns -1 if there is no hardware address on that interface. |
| 1271 | */ |
| 1272 | int getMacAddress(JNIEnv *env, const struct in_addr* addr, const char* ifname, |
| 1273 | unsigned char *buf) { |
| 1274 | int sock; |
| 1275 | #ifdef __linux__ |
| 1276 | static struct ifreq ifr; |
| 1277 | int i; |
| 1278 | |
| 1279 | sock = JVM_Socket(AF_INET, SOCK_DGRAM, 0); |
| 1280 | |
| 1281 | if (sock < 0) { |
| 1282 | NET_ThrowByNameWithLastError(env, JNU_JAVANETPKG "SocketException", |
| 1283 | "Socket creation failed"); |
| 1284 | return -1; |
| 1285 | } |
| 1286 | |
| 1287 | strcpy(ifr.ifr_name, ifname); |
| 1288 | |
| 1289 | if (ioctl(sock, SIOCGIFHWADDR, &ifr) < 0) { |
| 1290 | fprintf(stderr, "SIOCIFHWADDR: %s\n", |
| 1291 | strerror(errno)); |
| 1292 | close(sock); |
| 1293 | return -1; |
| 1294 | } |
| 1295 | memcpy(buf, &ifr.ifr_hwaddr.sa_data, IFHWADDRLEN); |
| 1296 | close(sock); |
| 1297 | for (i = 0; i < IFHWADDRLEN; i++) { |
| 1298 | if (buf[i] != 0) |
| 1299 | return IFHWADDRLEN; |
| 1300 | } |
| 1301 | /* |
| 1302 | * All bytes to 0 means no hardware address. |
| 1303 | */ |
| 1304 | return -1; |
| 1305 | #else |
| 1306 | struct arpreq arpreq; |
| 1307 | struct sockaddr_in* sin; |
| 1308 | struct sockaddr_in ipAddr; |
| 1309 | int len; |
| 1310 | |
| 1311 | /** |
| 1312 | * On Solaris we have to use DLPI, but it will only work if we have |
| 1313 | * privileged access (i.e. root). If that fails, we try a lookup |
| 1314 | * in the ARP table, which requires an IPv4 address. |
| 1315 | */ |
| 1316 | if ((len = getMacFromDevice(env, ifname, buf)) > 0) { |
| 1317 | return len; |
| 1318 | } |
| 1319 | if (addr == NULL) { |
| 1320 | /** |
| 1321 | * No IPv4 address for that interface, so can't do an ARP lookup. |
| 1322 | */ |
| 1323 | return -1; |
| 1324 | } |
| 1325 | sin = (struct sockaddr_in *) &arpreq.arp_pa; |
| 1326 | memset((char *) &arpreq, 0, sizeof(struct arpreq)); |
| 1327 | ipAddr.sin_port = 0; |
| 1328 | ipAddr.sin_family = AF_INET; |
| 1329 | memcpy(&ipAddr.sin_addr, addr, sizeof(struct in_addr)); |
| 1330 | memcpy(&arpreq.arp_pa, &ipAddr, sizeof(struct sockaddr_in)); |
| 1331 | arpreq.arp_flags= ATF_PUBL; |
| 1332 | sock = JVM_Socket(AF_INET, SOCK_DGRAM, 0); |
| 1333 | |
| 1334 | if (sock < 0) { |
| 1335 | NET_ThrowByNameWithLastError(env, JNU_JAVANETPKG "SocketException", |
| 1336 | "Socket creation failed"); |
| 1337 | return -1; |
| 1338 | } |
| 1339 | |
| 1340 | if (ioctl(sock, SIOCGARP, &arpreq) >= 0) { |
| 1341 | close(sock); |
| 1342 | memcpy(buf, &arpreq.arp_ha.sa_data[0], 6); |
| 1343 | return 6; |
| 1344 | } |
| 1345 | |
| 1346 | if (errno != ENXIO) { |
| 1347 | // "No such device or address" means no hardware address, so it's |
| 1348 | // normal don't throw an exception |
| 1349 | NET_ThrowByNameWithLastError(env, JNU_JAVANETPKG "SocketException", |
| 1350 | "IOCTL failed"); |
| 1351 | } |
| 1352 | close(sock); |
| 1353 | #endif |
| 1354 | return -1; |
| 1355 | } |
| 1356 | |
| 1357 | /* |
| 1358 | * Class: java_net_NetworkInterface |
| 1359 | * Method: isUp0 |
| 1360 | * Signature: (Ljava/lang/String;I)Z |
| 1361 | */ |
| 1362 | JNIEXPORT jboolean JNICALL Java_java_net_NetworkInterface_isUp0 |
| 1363 | (JNIEnv *env, jclass cls, jstring name, jint index) { |
| 1364 | short val; |
| 1365 | |
| 1366 | val = getFlags(env, name); |
| 1367 | if ( (val & IFF_UP) && (val & IFF_RUNNING)) |
| 1368 | return JNI_TRUE; |
| 1369 | return JNI_FALSE; |
| 1370 | } |
| 1371 | |
| 1372 | /* |
| 1373 | * Class: java_net_NetworkInterface |
| 1374 | * Method: isP2P0 |
| 1375 | * Signature: (Ljava/lang/String;I)Z |
| 1376 | */ |
| 1377 | JNIEXPORT jboolean JNICALL Java_java_net_NetworkInterface_isP2P0 |
| 1378 | (JNIEnv *env, jclass cls, jstring name, jint index) { |
| 1379 | if (getFlags(env, name) & IFF_POINTOPOINT) |
| 1380 | return JNI_TRUE; |
| 1381 | return JNI_FALSE; |
| 1382 | } |
| 1383 | |
| 1384 | /* |
| 1385 | * Class: java_net_NetworkInterface |
| 1386 | * Method: isLoopback0 |
| 1387 | * Signature: (Ljava/lang/String;I)Z |
| 1388 | */ |
| 1389 | JNIEXPORT jboolean JNICALL Java_java_net_NetworkInterface_isLoopback0 |
| 1390 | (JNIEnv *env, jclass cls, jstring name, jint index) { |
| 1391 | if (getFlags(env, name) & IFF_LOOPBACK) |
| 1392 | return JNI_TRUE; |
| 1393 | return JNI_FALSE; |
| 1394 | } |
| 1395 | |
| 1396 | /* |
| 1397 | * Class: java_net_NetworkInterface |
| 1398 | * Method: supportsMulticast0 |
| 1399 | * Signature: (Ljava/lang/String;I)Z |
| 1400 | */ |
| 1401 | JNIEXPORT jboolean JNICALL Java_java_net_NetworkInterface_supportsMulticast0 |
| 1402 | (JNIEnv *env, jclass cls, jstring name, jint index) { |
| 1403 | short val; |
| 1404 | |
| 1405 | val = getFlags(env, name); |
| 1406 | if (val & IFF_MULTICAST) |
| 1407 | return JNI_TRUE; |
| 1408 | return JNI_FALSE; |
| 1409 | } |
| 1410 | |
| 1411 | /* |
| 1412 | * Class: java_net_NetworkInterface |
| 1413 | * Method: getMacAddr0 |
| 1414 | * Signature: ([bLjava/lang/String;I)[b |
| 1415 | */ |
| 1416 | JNIEXPORT jbyteArray JNICALL Java_java_net_NetworkInterface_getMacAddr0(JNIEnv *env, jclass class, jbyteArray addrArray, jstring name, jint index) { |
| 1417 | jint addr; |
| 1418 | jbyte caddr[4]; |
| 1419 | struct in_addr iaddr; |
| 1420 | jbyteArray ret = NULL; |
| 1421 | unsigned char mac[16]; |
| 1422 | int len; |
| 1423 | jboolean isCopy; |
| 1424 | const char* name_utf = (*env)->GetStringUTFChars(env, name, &isCopy); |
| 1425 | |
| 1426 | if (!IS_NULL(addrArray)) { |
| 1427 | (*env)->GetByteArrayRegion(env, addrArray, 0, 4, caddr); |
| 1428 | addr = ((caddr[0]<<24) & 0xff000000); |
| 1429 | addr |= ((caddr[1] <<16) & 0xff0000); |
| 1430 | addr |= ((caddr[2] <<8) & 0xff00); |
| 1431 | addr |= (caddr[3] & 0xff); |
| 1432 | iaddr.s_addr = htonl(addr); |
| 1433 | len = getMacAddress(env, &iaddr, name_utf, mac); |
| 1434 | } else { |
| 1435 | len = getMacAddress(env, NULL, name_utf, mac); |
| 1436 | } |
| 1437 | if (len > 0) { |
| 1438 | ret = (*env)->NewByteArray(env, len); |
| 1439 | if (IS_NULL(ret)) { |
| 1440 | /* we may have memory to free at the end of this */ |
| 1441 | goto fexit; |
| 1442 | } |
| 1443 | (*env)->SetByteArrayRegion(env, ret, 0, len, (jbyte *) (mac)); |
| 1444 | } |
| 1445 | fexit: |
| 1446 | /* release the UTF string and interface list */ |
| 1447 | (*env)->ReleaseStringUTFChars(env, name, name_utf); |
| 1448 | return ret; |
| 1449 | } |
| 1450 | |
| 1451 | /* |
| 1452 | * Class: java_net_NetworkInterface |
| 1453 | * Method: getMTU0 |
| 1454 | * Signature: ([bLjava/lang/String;I)I |
| 1455 | */ |
| 1456 | |
| 1457 | JNIEXPORT jint JNICALL Java_java_net_NetworkInterface_getMTU0(JNIEnv *env, jclass class, jstring name, jint index) { |
| 1458 | jboolean isCopy; |
| 1459 | int sock; |
| 1460 | struct ifreq if2; |
| 1461 | int ret = -1; |
| 1462 | const char* name_utf = (*env)->GetStringUTFChars(env, name, &isCopy); |
| 1463 | |
| 1464 | sock = JVM_Socket(AF_INET, SOCK_DGRAM, 0); |
| 1465 | if (sock < 0) { |
| 1466 | NET_ThrowByNameWithLastError(env, JNU_JAVANETPKG "SocketException", |
| 1467 | "Socket creation failed"); |
| 1468 | } else { |
| 1469 | |
| 1470 | #ifdef __linux__ |
| 1471 | memset((char *) &if2, 0, sizeof(if2)); |
| 1472 | strcpy(if2.ifr_name, name_utf); |
| 1473 | |
| 1474 | if (ioctl(sock, SIOCGIFMTU, (char *)&if2) >= 0) { |
| 1475 | ret= if2.ifr_mtu; |
| 1476 | } else { |
| 1477 | NET_ThrowByNameWithLastError(env, JNU_JAVANETPKG "SocketException", |
| 1478 | "IOCTL failed"); |
| 1479 | } |
| 1480 | #else /* Solaris */ |
| 1481 | struct lifreq lifr; |
| 1482 | memset((caddr_t)&lifr, 0, sizeof(lifr)); |
| 1483 | strcpy((caddr_t)&(lifr.lifr_name), name_utf); |
| 1484 | if (ioctl(sock, SIOCGLIFMTU, (caddr_t)&lifr) >= 0) { |
| 1485 | ret = lifr.lifr_mtu; |
| 1486 | } else { |
| 1487 | NET_ThrowByNameWithLastError(env, JNU_JAVANETPKG "SocketException", |
| 1488 | "IOCTL failed"); |
| 1489 | } |
| 1490 | #endif |
| 1491 | close(sock); |
| 1492 | } |
| 1493 | /* release the UTF string and interface list */ |
| 1494 | (*env)->ReleaseStringUTFChars(env, name, name_utf); |
| 1495 | return ret; |
| 1496 | } |