--- a/jdk/src/java.base/unix/native/libnet/NetworkInterface.c Fri Jul 22 11:12:02 2016 +0100
+++ b/jdk/src/java.base/unix/native/libnet/NetworkInterface.c Fri Jul 22 14:38:33 2016 +0200
@@ -25,9 +25,6 @@
#include <errno.h>
#include <strings.h>
-#if defined(_ALLBSD_SOURCE) && defined(__OpenBSD__)
-#include <sys/types.h>
-#endif
#include <netinet/in.h>
#include <stdlib.h>
#include <string.h>
@@ -46,7 +43,6 @@
#if defined(__linux__)
#include <sys/ioctl.h>
-#include <bits/ioctls.h>
#include <sys/utsname.h>
#include <stdio.h>
#endif
@@ -76,9 +72,23 @@
#include "net_util.h"
#if defined(__linux__)
-#define _PATH_PROCNET_IFINET6 "/proc/net/if_inet6"
+ #define _PATH_PROCNET_IFINET6 "/proc/net/if_inet6"
+#elif defined(__solaris__)
+ #ifndef SIOCGLIFHWADDR
+ #define SIOCGLIFHWADDR _IOWR('i', 192, struct lifreq)
+ #endif
+ #define DEV_PREFIX "/dev/"
#endif
+#define CHECKED_MALLOC3(_pointer, _type, _size) \
+ do { \
+ _pointer = (_type)malloc(_size); \
+ if (_pointer == NULL) { \
+ JNU_ThrowOutOfMemoryError(env, "Native heap allocation failed"); \
+ return ifs; /* return untouched list */ \
+ } \
+ } while(0)
+
typedef struct _netaddr {
struct sockaddr *addr;
struct sockaddr *brdcast;
@@ -130,40 +140,31 @@
static netif *enumInterfaces(JNIEnv *env);
static netif *enumIPv4Interfaces(JNIEnv *env, int sock, netif *ifs);
-#ifdef AF_INET6
+#if defined(AF_INET6)
static netif *enumIPv6Interfaces(JNIEnv *env, int sock, netif *ifs);
#endif
static netif *addif(JNIEnv *env, int sock, const char *if_name, netif *ifs,
- struct sockaddr *ifr_addrP, struct sockaddr *ifr_broadaddrP,
- struct sockaddr *ifr_subnetaddrP, int family, short prefix);
+ struct sockaddr *ifr_addrP,
+ struct sockaddr *ifr_broadaddrP,
+ int family, short prefix);
static void freeif(netif *ifs);
static int openSocket(JNIEnv *env, int proto);
static int openSocketWithFallback(JNIEnv *env, const char *ifname);
+static short translateIPv4AddressToPrefix(struct sockaddr_in *addr);
+static short translateIPv6AddressToPrefix(struct sockaddr_in6 *addr);
-static struct sockaddr *getBroadcast(JNIEnv *env, int sock, const char *name,
- struct sockaddr *brdcast_store);
-static short getSubnet(JNIEnv *env, int sock, const char *ifname);
-static short computeMaskFromAddress(struct sockaddr *ifr_subnetaddrP);
static int getIndex(int sock, const char *ifname);
-
static int getFlags(int sock, const char *ifname, int *flags);
-static int getMacAddress(JNIEnv *env, int sock, const char *ifname,
+static int getMacAddress(JNIEnv *env, int sock, const char *ifname,
const struct in_addr *addr, unsigned char *buf);
static int getMTU(JNIEnv *env, int sock, const char *ifname);
-
#if defined(__solaris__)
-static netif *enumIPvXInterfaces(JNIEnv *env, int sock, netif *ifs, int family);
static int getMacFromDevice(JNIEnv *env, const char *ifname,
unsigned char *retbuf);
-
-#ifndef SIOCGLIFHWADDR
-#define SIOCGLIFHWADDR _IOWR('i', 192, struct lifreq)
-#endif
-
#endif
/******************* Java entry points *****************************/
@@ -259,7 +260,7 @@
}
// if found create a NetworkInterface
- if (curr != NULL) {;
+ if (curr != NULL) {
obj = createNetworkInterface(env, curr);
}
@@ -299,7 +300,7 @@
}
// if found create a NetworkInterface
- if (curr != NULL) {;
+ if (curr != NULL) {
obj = createNetworkInterface(env, curr);
}
@@ -317,7 +318,7 @@
{
netif *ifs, *curr;
-#ifdef AF_INET6
+#if defined(AF_INET6)
int family = (getInetAddress_family(env, iaObj) == IPv4) ? AF_INET : AF_INET6;
#else
int family = AF_INET;
@@ -335,7 +336,7 @@
while (curr != NULL) {
netaddr *addrP = curr->addr;
- // Iterate through each address on the interface
+ // iterate through each address on the interface
while (addrP != NULL) {
if (family == addrP->family) {
@@ -350,7 +351,7 @@
}
}
-#ifdef AF_INET6
+#if defined(AF_INET6)
if (family == AF_INET6) {
jbyte *bytes = (jbyte *)&(
((struct sockaddr_in6*)addrP->addr)->sin6_addr);
@@ -385,7 +386,7 @@
}
// if found create a NetworkInterface
- if (match) {;
+ if (match) {
obj = createNetworkInterface(env, curr);
}
@@ -634,7 +635,7 @@
* populates the InetAddress array based on the IP addresses for this
* interface.
*/
-jobject createNetworkInterface(JNIEnv *env, netif *ifs) {
+static jobject createNetworkInterface(JNIEnv *env, netif *ifs) {
jobject netifObj;
jobject name;
jobjectArray addrArr;
@@ -712,7 +713,7 @@
}
}
-#ifdef AF_INET6
+#if defined(AF_INET6)
if (addrP->family == AF_INET6) {
int scope=0;
iaObj = (*env)->NewObject(env, ia6_class, ia6_ctrID);
@@ -803,7 +804,7 @@
// return partial list if an exception occurs in the middle of process ???
// If IPv6 is available then enumerate IPv6 addresses.
-#ifdef AF_INET6
+#if defined(AF_INET6)
// User can disable ipv6 explicitly by -Djava.net.preferIPv4Stack=true,
// so we have to call ipv6_available()
@@ -829,20 +830,10 @@
return ifs;
}
-#define CHECKED_MALLOC3(_pointer, _type, _size) \
- do { \
- _pointer = (_type)malloc(_size); \
- if (_pointer == NULL) { \
- JNU_ThrowOutOfMemoryError(env, "Native heap allocation failed"); \
- return ifs; /* return untouched list */ \
- } \
- } while(0)
-
-
/*
- * Frees an interface list (including any attached addresses)
+ * Frees an interface list (including any attached addresses).
*/
-void freeif(netif *ifs) {
+static void freeif(netif *ifs) {
netif *currif = ifs;
netif *child = NULL;
@@ -865,9 +856,10 @@
}
}
-netif *addif(JNIEnv *env, int sock, const char *if_name, netif *ifs,
- struct sockaddr *ifr_addrP, struct sockaddr *ifr_broadaddrP,
- struct sockaddr *ifr_subnetaddrP, int family, short prefix)
+static netif *addif(JNIEnv *env, int sock, const char *if_name, netif *ifs,
+ struct sockaddr *ifr_addrP,
+ struct sockaddr *ifr_broadaddrP,
+ int family, short prefix)
{
netif *currif = ifs, *parent;
netaddr *addrP;
@@ -881,7 +873,6 @@
#endif
char *name_colonP;
- int mask;
int isVirtual = 0;
int addr_size;
int flags = 0;
@@ -894,12 +885,12 @@
name[ifnam_size - 1] = '\0';
*vname = 0;
- // Create and populate the netaddr node. If allocation fails
- // return an un-updated list.
+ // Create and populate the netaddr node. If allocation fails
+ // return an un-updated list.
- // Allocate for addr and brdcast at once
+ // Allocate for addr and brdcast at once
-#ifdef AF_INET6
+#if defined(AF_INET6)
addr_size = (family == AF_INET) ? sizeof(struct sockaddr_in)
: sizeof(struct sockaddr_in6);
#else
@@ -911,33 +902,16 @@
memcpy(addrP->addr, ifr_addrP, addr_size);
addrP->family = family;
- addrP->brdcast = NULL;
addrP->mask = prefix;
addrP->next = 0;
- if (family == AF_INET) {
- // Deal with broadcast addr & subnet mask
- if (ifr_broadaddrP != NULL) { // just set it, if already known
- addrP->brdcast =
- (struct sockaddr *)((char *)addrP + sizeof(netaddr) + addr_size);
- memcpy(addrP->brdcast, ifr_broadaddrP, addr_size);
- } else { // otherwise look it up
- struct sockaddr *brdcast_to =
- (struct sockaddr *)((char *)addrP + sizeof(netaddr) + addr_size);
- addrP->brdcast = getBroadcast(env, sock, name, brdcast_to);
- if ((*env)->ExceptionCheck(env) == JNI_TRUE) {
- return ifs;
- }
- }
- if (ifr_subnetaddrP != NULL) { // just compute the mask, if already known
- addrP->mask = computeMaskFromAddress(ifr_subnetaddrP);
- } else { // otherwise look it up
- if ((mask = getSubnet(env, sock, name)) != -1) {
- addrP->mask = mask;
- } else if((*env)->ExceptionCheck(env)) {
- return ifs;
- }
- }
+ // for IPv4 add broadcast address
+ if (family == AF_INET && ifr_broadaddrP != NULL) {
+ addrP->brdcast = (struct sockaddr *)
+ ((char *)addrP + sizeof(netaddr) + addr_size);
+ memcpy(addrP->brdcast, ifr_broadaddrP, addr_size);
+ } else {
+ addrP->brdcast = NULL;
}
// Deal with virtual interface with colon notation e.g. eth0:1
@@ -1037,18 +1011,55 @@
return ifs;
}
-static short computeMaskFromAddress(struct sockaddr *ifr_subnetaddrP) {
- short ret = 0;
- unsigned int mask;
+/*
+ * Determines the prefix value for an AF_INET subnet address.
+ */
+static short translateIPv4AddressToPrefix(struct sockaddr_in *addr) {
+ short prefix = 0;
+ unsigned int mask = ntohl(addr->sin_addr.s_addr);
+ while (mask) {
+ mask <<= 1;
+ prefix++;
+ }
+ return prefix;
+}
+
+/*
+ * Determines the prefix value for an AF_INET6 subnet address.
+ */
+static short translateIPv6AddressToPrefix(struct sockaddr_in6 *addr) {
+ short prefix = 0;
+ u_char *addrBytes = (u_char *)&(addr->sin6_addr);
+ unsigned int byte, bit;
- mask = ntohl(((struct sockaddr_in*)ifr_subnetaddrP)->sin_addr.s_addr);
-
- while (mask) {
- mask <<= 1;
- ret++;
+ for (byte = 0; byte < sizeof(struct in6_addr); byte++, prefix += 8) {
+ if (addrBytes[byte] != 0xff) {
+ break;
+ }
+ }
+ if (byte != sizeof(struct in6_addr)) {
+ for (bit = 7; bit != 0; bit--, prefix++) {
+ if (!(addrBytes[byte] & (1 << bit))) {
+ break;
+ }
+ }
+ for (; bit != 0; bit--) {
+ if (addrBytes[byte] & (1 << bit)) {
+ prefix = 0;
+ break;
+ }
+ }
+ if (prefix > 0) {
+ byte++;
+ for (; byte < sizeof(struct in6_addr); byte++) {
+ if (addrBytes[byte]) {
+ prefix = 0;
+ }
+ }
+ }
}
- return ret;
+ return prefix;
}
/*
@@ -1070,19 +1081,16 @@
return sock;
}
-
-/** Linux, AIX **/
-#if defined(__linux__) || defined(_AIX)
+/** Linux **/
+#if defined(__linux__)
-#ifdef AF_INET6
+#if defined(AF_INET6)
/*
- * Opens a socket for further ioct calls. Tries AF_INET socket first and
- * if it falls return AF_INET6 socket.
+ * Opens a socket for further ioctl calls. Tries AF_INET socket first and
+ * if it fails return AF_INET6 socket.
*/
-// unused arg ifname and struct if2
static int openSocketWithFallback(JNIEnv *env, const char *ifname) {
int sock;
- struct ifreq if2;
if ((sock = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
if (errno == EPROTONOSUPPORT) {
@@ -1102,23 +1110,22 @@
// IPv6 socket regardless of type of address of an interface.
return sock;
}
-
#else
static int openSocketWithFallback(JNIEnv *env, const char *ifname) {
- return openSocket(env,AF_INET);
+ return openSocket(env, AF_INET);
}
#endif
+/*
+ * Enumerates and returns all IPv4 interfaces on Linux.
+ */
static netif *enumIPv4Interfaces(JNIEnv *env, int sock, netif *ifs) {
struct ifconf ifc;
struct ifreq *ifreqP;
char *buf = NULL;
- int numifs;
unsigned i;
- int siocgifconfRequest = SIOCGIFCONF;
-#if defined(__linux__)
- // need to do a dummy SIOCGIFCONF to determine the buffer size.
+ // do a dummy SIOCGIFCONF to determine the buffer size
// SIOCGIFCOUNT doesn't work
ifc.ifc_buf = NULL;
if (ioctl(sock, SIOCGIFCONF, (char *)&ifc) < 0) {
@@ -1126,160 +1133,9 @@
(env, JNU_JAVANETPKG "SocketException", "ioctl(SIOCGIFCONF) failed");
return ifs;
}
-#elif defined(_AIX)
- ifc.ifc_buf = NULL;
- if (ioctl(sock, SIOCGSIZIFCONF, &(ifc.ifc_len)) < 0) {
- JNU_ThrowByNameWithMessageAndLastError
- (env, JNU_JAVANETPKG "SocketException", "ioctl(SIOCGSIZIFCONF) failed");
- return ifs;
- }
-#endif /* __linux__ */
+ // call SIOCGIFCONF to enumerate the interfaces
CHECKED_MALLOC3(buf, char *, ifc.ifc_len);
-
- ifc.ifc_buf = buf;
-#if defined(_AIX)
- siocgifconfRequest = CSIOCGIFCONF;
-#endif
- if (ioctl(sock, siocgifconfRequest, (char *)&ifc) < 0) {
- JNU_ThrowByNameWithMessageAndLastError
- (env, JNU_JAVANETPKG "SocketException", "ioctl(SIOCGIFCONF) failed");
- free(buf);
- return ifs;
- }
-
- // Iterate through each interface
- ifreqP = ifc.ifc_req;
- struct sockaddr addr, broadaddr, netmask;
- for (i = 0; i < ifc.ifc_len / sizeof(struct ifreq); i++, ifreqP++) {
- struct sockaddr* broadaddrP = NULL;
- struct sockaddr* subnetaddrP = NULL;
-
- // Ignore non IPv4 Interfaces
- if ((struct sockaddr *)&(ifreqP->ifr_addr) != NULL &&
- ((struct sockaddr *)&(ifreqP->ifr_addr))->sa_family != AF_INET) {
- continue;
- }
-
- memcpy(&addr, &(ifreqP->ifr_addr), sizeof(struct sockaddr));
-
- // set broadaddrP, if applicable
- if ((ifreqP->ifr_flags & IFF_POINTOPOINT) == 0 &&
- ifreqP->ifr_flags & IFF_BROADCAST) {
-
- if (ioctl(sock, SIOCGIFBRDADDR, ifreqP) == 0) {
- memcpy(&broadaddr, &(ifreqP->ifr_broadaddr), sizeof(struct sockaddr));
- broadaddrP = &broadaddr;
- }
- // restore the address, for subsequent calls
- memcpy(&(ifreqP->ifr_addr), &addr, sizeof(struct sockaddr));
- }
-
- if (ioctl(sock, SIOCGIFNETMASK, ifreqP) == 0) {
-#if defined(_AIX)
- memcpy(&netmask, &(ifreqP->ifr_addr), sizeof(struct sockaddr));
-#else
- memcpy(&netmask, &(ifreqP->ifr_netmask), sizeof(struct sockaddr));
-#endif
- subnetaddrP = &netmask;
- }
-
- // Add to the list
- ifs = addif(env, sock, ifreqP->ifr_name, ifs,
- &addr, broadaddrP, subnetaddrP, AF_INET, 0);
-
- // If an exception occurred then free the list
- if ((*env)->ExceptionOccurred(env)) {
- free(buf);
- freeif(ifs);
- return NULL;
- }
- }
-
- // Free socket and buffer
- free(buf);
- return ifs;
-}
-
-
-#if defined(AF_INET6) && defined(__linux__)
-
-/*
- * Enumerates and returns all IPv6 interfaces on Linux.
- */
-static netif *enumIPv6Interfaces(JNIEnv *env, int sock, netif *ifs) {
- FILE *f;
- char addr6[40], devname[21];
- char addr6p[8][5];
- int prefix, scope, dad_status, if_idx;
- uint8_t ipv6addr[16];
-
- if ((f = fopen(_PATH_PROCNET_IFINET6, "r")) != NULL) {
- while (fscanf(f, "%4s%4s%4s%4s%4s%4s%4s%4s %08x %02x %02x %02x %20s\n",
- addr6p[0], addr6p[1], addr6p[2], addr6p[3],
- addr6p[4], addr6p[5], addr6p[6], addr6p[7],
- &if_idx, &prefix, &scope, &dad_status, devname) != EOF) {
-
- struct netif *ifs_ptr = NULL;
- struct netif *last_ptr = NULL;
- struct sockaddr_in6 addr;
-
- sprintf(addr6, "%s:%s:%s:%s:%s:%s:%s:%s",
- addr6p[0], addr6p[1], addr6p[2], addr6p[3],
- addr6p[4], addr6p[5], addr6p[6], addr6p[7]);
- inet_pton(AF_INET6, addr6, ipv6addr);
-
- memset(&addr, 0, sizeof(struct sockaddr_in6));
- memcpy((void*)addr.sin6_addr.s6_addr, (const void*)ipv6addr, 16);
-
- addr.sin6_scope_id = if_idx;
-
- ifs = addif(env, sock, devname, ifs, (struct sockaddr *)&addr,
- NULL, NULL, AF_INET6, (short)prefix);
-
- // If an exception occurred then return the list as is.
- if ((*env)->ExceptionOccurred(env)) {
- fclose(f);
- return ifs;
- }
- }
- fclose(f);
- }
- return ifs;
-}
-#endif
-
-
-#if defined(AF_INET6) && defined(_AIX)
-
-/*
- * Enumerates and returns all IPv6 interfaces on AIX.
- */
-static netif *enumIPv6Interfaces(JNIEnv *env, int sock, netif *ifs) {
- struct ifconf ifc;
- struct ifreq *ifreqP;
- char *buf;
- int numifs;
- unsigned i;
- unsigned bufsize;
- char *cp, *cplimit;
-
- // use SIOCGSIZIFCONF to get size for SIOCGIFCONF
-
- ifc.ifc_buf = NULL;
- if (ioctl(sock, SIOCGSIZIFCONF, &(ifc.ifc_len)) < 0) {
- JNU_ThrowByNameWithMessageAndLastError
- (env, JNU_JAVANETPKG "SocketException", "ioctl(SIOCGSIZIFCONF) failed");
- return ifs;
- }
- bufsize = ifc.ifc_len;
-
- buf = (char *)malloc(bufsize);
- if (!buf) {
- JNU_ThrowOutOfMemoryError(env, "Network interface native buffer allocation failed");
- return ifs;
- }
- ifc.ifc_len = bufsize;
ifc.ifc_buf = buf;
if (ioctl(sock, SIOCGIFCONF, (char *)&ifc) < 0) {
JNU_ThrowByNameWithMessageAndLastError
@@ -1288,41 +1144,48 @@
return ifs;
}
- // Iterate through each interface
+ // iterate through each interface
ifreqP = ifc.ifc_req;
- cp = (char *)ifc.ifc_req;
- cplimit = cp + ifc.ifc_len;
+ for (i = 0; i < ifc.ifc_len / sizeof(struct ifreq); i++, ifreqP++) {
+ struct sockaddr addr, broadaddr, *broadaddrP = NULL;
+ short prefix = 0;
+
+ // ignore non IPv4 interfaces
+ if (ifreqP->ifr_addr.sa_family != AF_INET) {
+ continue;
+ }
- for (; cp < cplimit;
- cp += (sizeof(ifreqP->ifr_name) +
- MAX((ifreqP->ifr_addr).sa_len, sizeof(ifreqP->ifr_addr))))
- {
- ifreqP = (struct ifreq *)cp;
- struct ifreq if2;
- memset((char *)&if2, 0, sizeof(if2));
- strncpy(if2.ifr_name, ifreqP->ifr_name, sizeof(if2.ifr_name) - 1);
+ // save socket address
+ memcpy(&addr, &(ifreqP->ifr_addr), sizeof(struct sockaddr));
+
+ // determine broadcast address, if applicable
+ if ((ioctl(sock, SIOCGIFFLAGS, ifreqP) == 0) &&
+ ifreqP->ifr_flags & IFF_BROADCAST) {
- // Skip interface that aren't UP
- if (ioctl(sock, SIOCGIFFLAGS, (char *)&if2) >= 0) {
- if (!(if2.ifr_flags & IFF_UP)) {
- continue;
+ // restore socket address to ifreqP
+ memcpy(&(ifreqP->ifr_addr), &addr, sizeof(struct sockaddr));
+
+ if (ioctl(sock, SIOCGIFBRDADDR, ifreqP) == 0) {
+ memcpy(&broadaddr, &(ifreqP->ifr_broadaddr),
+ sizeof(struct sockaddr));
+ broadaddrP = &broadaddr;
}
}
- if (ifreqP->ifr_addr.sa_family != AF_INET6)
- continue;
+ // restore socket address to ifreqP
+ memcpy(&(ifreqP->ifr_addr), &addr, sizeof(struct sockaddr));
- if (ioctl(sock, SIOCGIFSITE6, (char *)&if2) >= 0) {
- struct sockaddr_in6 *s6= (struct sockaddr_in6 *)&(ifreqP->ifr_addr);
- s6->sin6_scope_id = if2.ifr_site6;
+ // determine netmask
+ if (ioctl(sock, SIOCGIFNETMASK, ifreqP) == 0) {
+ prefix = translateIPv4AddressToPrefix(
+ (struct sockaddr_in *)&(ifreqP->ifr_netmask));
}
- // Add to the list
+ // add interface to the list
ifs = addif(env, sock, ifreqP->ifr_name, ifs,
- (struct sockaddr *)&(ifreqP->ifr_addr),
- NULL, NULL, AF_INET6, 0);
+ &addr, broadaddrP, AF_INET, prefix);
- // If an exception occurred then free the list
+ // in case of exception, free interface list and buffer and return NULL
if ((*env)->ExceptionOccurred(env)) {
free(buf);
freeif(ifs);
@@ -1330,18 +1193,60 @@
}
}
- // Free socket and buffer
+ // free buffer
free(buf);
return ifs;
}
-#endif
+
+#if defined(AF_INET6)
+
+/*
+ * Enumerates and returns all IPv6 interfaces on Linux.
+ */
+static netif *enumIPv6Interfaces(JNIEnv *env, int sock, netif *ifs) {
+ FILE *f;
+ char devname[21], addr6p[8][5];
+ int prefix, scope, dad_status, if_idx;
+
+ if ((f = fopen(_PATH_PROCNET_IFINET6, "r")) != NULL) {
+ while (fscanf(f, "%4s%4s%4s%4s%4s%4s%4s%4s %08x %02x %02x %02x %20s\n",
+ addr6p[0], addr6p[1], addr6p[2], addr6p[3],
+ addr6p[4], addr6p[5], addr6p[6], addr6p[7],
+ &if_idx, &prefix, &scope, &dad_status, devname) != EOF) {
+
+ char addr6[40];
+ struct sockaddr_in6 addr;
+
+ sprintf(addr6, "%s:%s:%s:%s:%s:%s:%s:%s",
+ addr6p[0], addr6p[1], addr6p[2], addr6p[3],
+ addr6p[4], addr6p[5], addr6p[6], addr6p[7]);
+ memset(&addr, 0, sizeof(struct sockaddr_in6));
+ inet_pton(AF_INET6, addr6, (void*)addr.sin6_addr.s6_addr);
+ // set scope ID to interface index
+ addr.sin6_scope_id = if_idx;
+
+ // add interface to the list
+ ifs = addif(env, sock, devname, ifs, (struct sockaddr *)&addr,
+ NULL, AF_INET6, (short)prefix);
+
+ // if an exception occurred then return the list as is
+ if ((*env)->ExceptionOccurred(env)) {
+ break;
+ }
+ }
+ fclose(f);
+ }
+ return ifs;
+}
+
+#endif /* AF_INET6 */
+
+/*
+ * Try to get the interface index.
+ */
static int getIndex(int sock, const char *name) {
- // Try to get the interface index
-#if defined(_AIX)
- return if_nametoindex(name);
-#else
struct ifreq if2;
memset((char *)&if2, 0, sizeof(if2));
strncpy(if2.ifr_name, name, sizeof(if2.ifr_name) - 1);
@@ -1351,61 +1256,6 @@
}
return if2.ifr_ifindex;
-#endif
-}
-
-/*
- * Returns the IPv4 broadcast address of a named interface, if it exists.
- * Returns 0 if it doesn't have one.
- */
-static struct sockaddr *getBroadcast
- (JNIEnv *env, int sock, const char *ifname, struct sockaddr *brdcast_store)
-{
- struct sockaddr *ret = NULL;
- struct ifreq if2;
- memset((char *)&if2, 0, sizeof(if2));
- strncpy(if2.ifr_name, ifname, sizeof(if2.ifr_name) - 1);
-
- // Let's make sure the interface does have a broadcast address.
- if (ioctl(sock, SIOCGIFFLAGS, (char *)&if2) < 0) {
- JNU_ThrowByNameWithMessageAndLastError
- (env, JNU_JAVANETPKG "SocketException", "ioctl(SIOCGIFFLAGS) failed");
- return ret;
- }
-
- if (if2.ifr_flags & IFF_BROADCAST) {
- // It does, let's retrieve it
- if (ioctl(sock, SIOCGIFBRDADDR, (char *)&if2) < 0) {
- JNU_ThrowByNameWithMessageAndLastError
- (env, JNU_JAVANETPKG "SocketException", "ioctl(SIOCGIFBRDADDR) failed");
- return ret;
- }
-
- ret = brdcast_store;
- memcpy(ret, &if2.ifr_broadaddr, sizeof(struct sockaddr));
- }
-
- return ret;
-}
-
-/*
- * Returns the IPv4 subnet prefix length (aka subnet mask) for the named
- * interface, if it has one, otherwise return -1.
- */
-static short getSubnet(JNIEnv *env, int sock, const char *ifname) {
- unsigned int mask;
- short ret;
- struct ifreq if2;
- memset((char *)&if2, 0, sizeof(if2));
- strncpy(if2.ifr_name, ifname, sizeof(if2.ifr_name) - 1);
-
- if (ioctl(sock, SIOCGIFNETMASK, (char *)&if2) < 0) {
- JNU_ThrowByNameWithMessageAndLastError
- (env, JNU_JAVANETPKG "SocketException", "ioctl(SIOCGIFNETMASK) failed");
- return -1;
- }
-
- return computeMaskFromAddress(&(if2.ifr_addr));
}
/*
@@ -1414,10 +1264,272 @@
* MAC address. Returns -1 if there is no hardware address on that interface.
*/
static int getMacAddress
- (JNIEnv *env, int sock, const char* ifname, const struct in_addr* addr,
+ (JNIEnv *env, int sock, const char *ifname, const struct in_addr *addr,
unsigned char *buf)
{
-#if defined (_AIX)
+ static struct ifreq ifr;
+ int i;
+ memset((char *)&ifr, 0, sizeof(ifr));
+ strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name) - 1);
+ if (ioctl(sock, SIOCGIFHWADDR, &ifr) < 0) {
+ JNU_ThrowByNameWithMessageAndLastError
+ (env, JNU_JAVANETPKG "SocketException", "ioctl(SIOCGIFHWADDR) failed");
+ return -1;
+ }
+
+ memcpy(buf, &ifr.ifr_hwaddr.sa_data, IFHWADDRLEN);
+
+ // all bytes to 0 means no hardware address
+ for (i = 0; i < IFHWADDRLEN; i++) {
+ if (buf[i] != 0)
+ return IFHWADDRLEN;
+ }
+
+ return -1;
+}
+
+static int getMTU(JNIEnv *env, int sock, const char *ifname) {
+ struct ifreq if2;
+ memset((char *)&if2, 0, sizeof(if2));
+ strncpy(if2.ifr_name, ifname, sizeof(if2.ifr_name) - 1);
+
+ if (ioctl(sock, SIOCGIFMTU, (char *)&if2) < 0) {
+ JNU_ThrowByNameWithMessageAndLastError
+ (env, JNU_JAVANETPKG "SocketException", "ioctl(SIOCGIFMTU) failed");
+ return -1;
+ }
+
+ return if2.ifr_mtu;
+}
+
+static int getFlags(int sock, const char *ifname, int *flags) {
+ struct ifreq if2;
+ memset((char *)&if2, 0, sizeof(if2));
+ strncpy(if2.ifr_name, ifname, sizeof(if2.ifr_name) - 1);
+
+ if (ioctl(sock, SIOCGIFFLAGS, (char *)&if2) < 0) {
+ return -1;
+ }
+
+ if (sizeof(if2.ifr_flags) == sizeof(short)) {
+ *flags = (if2.ifr_flags & 0xffff);
+ } else {
+ *flags = if2.ifr_flags;
+ }
+ return 0;
+}
+
+#endif /* __linux__ */
+
+/** AIX **/
+#if defined(_AIX)
+
+#if defined(AF_INET6)
+/*
+ * Opens a socket for further ioctl calls. Tries AF_INET socket first and
+ * if it fails return AF_INET6 socket.
+ */
+static int openSocketWithFallback(JNIEnv *env, const char *ifname) {
+ int sock;
+
+ if ((sock = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
+ if (errno == EPROTONOSUPPORT) {
+ if ((sock = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
+ JNU_ThrowByNameWithMessageAndLastError
+ (env, JNU_JAVANETPKG "SocketException", "IPV6 Socket creation failed");
+ return -1;
+ }
+ } else { // errno is not NOSUPPORT
+ JNU_ThrowByNameWithMessageAndLastError
+ (env, JNU_JAVANETPKG "SocketException", "IPV4 Socket creation failed");
+ return -1;
+ }
+ }
+
+ return sock;
+}
+#else
+static int openSocketWithFallback(JNIEnv *env, const char *ifname) {
+ return openSocket(env, AF_INET);
+}
+#endif
+
+/*
+ * Enumerates and returns all IPv4 interfaces on AIX.
+ */
+static netif *enumIPv4Interfaces(JNIEnv *env, int sock, netif *ifs) {
+ struct ifconf ifc;
+ struct ifreq *ifreqP;
+ char *buf = NULL;
+ unsigned i;
+
+ // call SIOCGSIZIFCONF to get the size of SIOCGIFCONF buffer
+ if (ioctl(sock, SIOCGSIZIFCONF, &(ifc.ifc_len)) < 0) {
+ JNU_ThrowByNameWithMessageAndLastError
+ (env, JNU_JAVANETPKG "SocketException", "ioctl(SIOCGSIZIFCONF) failed");
+ return ifs;
+ }
+
+ // call CSIOCGIFCONF instead of SIOCGIFCONF where interface
+ // records will always have sizeof(struct ifreq) length.
+ // Be aware that only IPv4 data is complete this way.
+ CHECKED_MALLOC3(buf, char *, ifc.ifc_len);
+ ifc.ifc_buf = buf;
+ if (ioctl(sock, CSIOCGIFCONF, (char *)&ifc) < 0) {
+ JNU_ThrowByNameWithMessageAndLastError
+ (env, JNU_JAVANETPKG "SocketException", "ioctl(CSIOCGIFCONF) failed");
+ free(buf);
+ return ifs;
+ }
+
+ // iterate through each interface
+ ifreqP = ifc.ifc_req;
+ for (i = 0; i < ifc.ifc_len / sizeof(struct ifreq); i++, ifreqP++) {
+ struct sockaddr addr, broadaddr, *broadaddrP = NULL;
+ short prefix = 0;
+
+ // ignore non IPv4 interfaces
+ if (ifreqP->ifr_addr.sa_family != AF_INET) {
+ continue;
+ }
+
+ // save socket address
+ memcpy(&addr, &(ifreqP->ifr_addr), sizeof(struct sockaddr));
+
+ // determine broadcast address, if applicable
+ if ((ioctl(sock, SIOCGIFFLAGS, ifreqP) == 0) &&
+ ifreqP->ifr_flags & IFF_BROADCAST) {
+
+ // restore socket address to ifreqP
+ memcpy(&(ifreqP->ifr_addr), &addr, sizeof(struct sockaddr));
+
+ if (ioctl(sock, SIOCGIFBRDADDR, ifreqP) == 0) {
+ memcpy(&broadaddr, &(ifreqP->ifr_broadaddr),
+ sizeof(struct sockaddr));
+ broadaddrP = &broadaddr;
+ }
+ }
+
+ // restore socket address to ifreqP
+ memcpy(&(ifreqP->ifr_addr), &addr, sizeof(struct sockaddr));
+
+ // determine netmask
+ if (ioctl(sock, SIOCGIFNETMASK, ifreqP) == 0) {
+ prefix = translateIPv4AddressToPrefix(
+ (struct sockaddr_in *)&(ifreqP->ifr_addr));
+ }
+
+ // add interface to the list
+ ifs = addif(env, sock, ifreqP->ifr_name, ifs,
+ &addr, broadaddrP, AF_INET, prefix);
+
+ // in case of exception, free interface list and buffer and return NULL
+ if ((*env)->ExceptionOccurred(env)) {
+ free(buf);
+ freeif(ifs);
+ return NULL;
+ }
+ }
+
+ // free buffer
+ free(buf);
+ return ifs;
+}
+
+#if defined(AF_INET6)
+
+/*
+ * Enumerates and returns all IPv6 interfaces on AIX.
+ */
+static netif *enumIPv6Interfaces(JNIEnv *env, int sock, netif *ifs) {
+ struct ifconf ifc;
+ struct ifreq *ifreqP;
+ char *buf;
+
+ // call SIOCGSIZIFCONF to get size for SIOCGIFCONF buffer
+ if (ioctl(sock, SIOCGSIZIFCONF, &(ifc.ifc_len)) < 0) {
+ JNU_ThrowByNameWithMessageAndLastError
+ (env, JNU_JAVANETPKG "SocketException", "ioctl(SIOCGSIZIFCONF) failed");
+ return ifs;
+ }
+
+ // call SIOCGIFCONF to enumerate the interfaces
+ CHECKED_MALLOC3(buf, char *, ifc.ifc_len);
+ ifc.ifc_buf = buf;
+ if (ioctl(sock, SIOCGIFCONF, (char *)&ifc) < 0) {
+ JNU_ThrowByNameWithMessageAndLastError
+ (env, JNU_JAVANETPKG "SocketException", "ioctl(SIOCGIFCONF) failed");
+ free(buf);
+ return ifs;
+ }
+
+ // iterate through each interface
+ char *cp = (char *)ifc.ifc_req;
+ char *cplimit = cp + ifc.ifc_len;
+
+ for (; cp < cplimit;
+ cp += (sizeof(ifreqP->ifr_name) +
+ MAX((ifreqP->ifr_addr).sa_len, sizeof(ifreqP->ifr_addr))))
+ {
+ ifreqP = (struct ifreq *)cp;
+ short prefix = 0;
+
+ // ignore non IPv6 interfaces
+ if (ifreqP->ifr_addr.sa_family != AF_INET6) {
+ continue;
+ }
+
+ // determine netmask
+ struct in6_ifreq if6;
+ memset((char *)&if6, 0, sizeof(if6));
+ strncpy(if6.ifr_name, ifreqP->ifr_name, sizeof(if6.ifr_name) - 1);
+ memcpy(&(if6.ifr_Addr), &(ifreqP->ifr_addr),
+ sizeof(struct sockaddr_in6));
+ if (ioctl(sock, SIOCGIFNETMASK6, (char *)&if6) >= 0) {
+ prefix = translateIPv6AddressToPrefix(&(if6.ifr_Addr));
+ }
+
+ // set scope ID to interface index
+ ((struct sockaddr_in6 *)&(ifreqP->ifr_addr))->sin6_scope_id =
+ getIndex(sock, ifreqP->ifr_name);
+
+ // add interface to the list
+ ifs = addif(env, sock, ifreqP->ifr_name, ifs,
+ (struct sockaddr *)&(ifreqP->ifr_addr),
+ NULL, AF_INET6, prefix);
+
+ // if an exception occurred then free the list
+ if ((*env)->ExceptionOccurred(env)) {
+ free(buf);
+ freeif(ifs);
+ return NULL;
+ }
+ }
+
+ // free buffer
+ free(buf);
+ return ifs;
+}
+
+#endif /* AF_INET6 */
+
+/*
+ * Try to get the interface index.
+ */
+static int getIndex(int sock, const char *name) {
+ int index = if_nametoindex(name);
+ return (index == 0) ? -1 : index;
+}
+
+/*
+ * Gets the Hardware address (usually MAC address) for the named interface.
+ * On return puts the data in buf, and returns the length, in byte, of the
+ * MAC address. Returns -1 if there is no hardware address on that interface.
+ */
+static int getMacAddress
+ (JNIEnv *env, int sock, const char *ifname, const struct in_addr *addr,
+ unsigned char *buf)
+{
int size;
struct kinfo_ndd *nddp;
void *end;
@@ -1457,40 +1569,12 @@
}
return -1;
-#elif defined(__linux__)
- static struct ifreq ifr;
- int i;
- memset((char *)&ifr, 0, sizeof(ifr));
- strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name) - 1);
- if (ioctl(sock, SIOCGIFHWADDR, &ifr) < 0) {
- JNU_ThrowByNameWithMessageAndLastError
- (env, JNU_JAVANETPKG "SocketException", "ioctl(SIOCGIFHWADDR) failed");
- return -1;
- }
-
- memcpy(buf, &ifr.ifr_hwaddr.sa_data, IFHWADDRLEN);
-
- // All bytes to 0 means no hardware address.
-
- for (i = 0; i < IFHWADDRLEN; i++) {
- if (buf[i] != 0)
- return IFHWADDRLEN;
- }
-
- return -1;
-#endif
}
-static int getMTU(JNIEnv *env, int sock, const char *ifname) {
+static int getMTU(JNIEnv *env, int sock, const char *ifname) {
struct ifreq if2;
memset((char *)&if2, 0, sizeof(if2));
-
- if (ifname != NULL) {
- strncpy(if2.ifr_name, ifname, sizeof(if2.ifr_name) - 1);
- } else {
- JNU_ThrowNullPointerException(env, "network interface name is NULL");
- return -1;
- }
+ strncpy(if2.ifr_name, ifname, sizeof(if2.ifr_name) - 1);
if (ioctl(sock, SIOCGIFMTU, (char *)&if2) < 0) {
JNU_ThrowByNameWithMessageAndLastError
@@ -1498,7 +1582,7 @@
return -1;
}
- return if2.ifr_mtu;
+ return if2.ifr_mtu;
}
static int getFlags(int sock, const char *ifname, int *flags) {
@@ -1518,16 +1602,16 @@
return 0;
}
-#endif /* defined(__linux__) || defined(_AIX) */
+#endif /* _AIX */
/** Solaris **/
#if defined(__solaris__)
+#if defined(AF_INET6)
/*
- * Opens a socket for further ioct calls. Tries AF_INET socket first and
- * if it falls return AF_INET6 socket.
+ * Opens a socket for further ioctl calls. Tries AF_INET socket first and
+ * if it fails return AF_INET6 socket.
*/
-#ifdef AF_INET6
static int openSocketWithFallback(JNIEnv *env, const char *ifname) {
int sock, alreadyV6 = 0;
struct lifreq if2;
@@ -1539,8 +1623,7 @@
(env, JNU_JAVANETPKG "SocketException", "IPV6 Socket creation failed");
return -1;
}
-
- alreadyV6=1;
+ alreadyV6 = 1;
} else { // errno is not NOSUPPORT
JNU_ThrowByNameWithMessageAndLastError
(env, JNU_JAVANETPKG "SocketException", "IPV4 Socket creation failed");
@@ -1548,14 +1631,12 @@
}
}
-
// Solaris requires that we have an IPv6 socket to query an interface
// without an IPv4 address - check it here. POSIX 1 require the kernel to
// return ENOTTY if the call is inappropriate for a device e.g. the NETMASK
// for a device having IPv6 only address but not all devices follow the
// standard so fall back on any error. It's not an ecologically friendly
// gesture but more reliable.
-
if (!alreadyV6) {
memset((char *)&if2, 0, sizeof(if2));
strncpy(if2.lifr_name, ifname, sizeof(if2.lifr_name) - 1);
@@ -1571,40 +1652,24 @@
return sock;
}
-
#else
static int openSocketWithFallback(JNIEnv *env, const char *ifname) {
- return openSocket(env,AF_INET);
+ return openSocket(env, AF_INET);
}
#endif
/*
- * Enumerates and returns all IPv4 interfaces.
+ * Enumerates and returns all IPv4 interfaces on Solaris.
*/
static netif *enumIPv4Interfaces(JNIEnv *env, int sock, netif *ifs) {
- return enumIPvXInterfaces(env,sock, ifs, AF_INET);
-}
-
-#ifdef AF_INET6
-static netif *enumIPv6Interfaces(JNIEnv *env, int sock, netif *ifs) {
- return enumIPvXInterfaces(env,sock, ifs, AF_INET6);
-}
-#endif
+ struct lifconf ifc;
+ struct lifreq *ifreqP;
+ struct lifnum numifs;
+ char *buf = NULL;
+ unsigned i;
-/*
- * Enumerates and returns all interfaces on Solaris.
- * Uses the same code for IPv4 and IPv6.
- */
-static netif *enumIPvXInterfaces(JNIEnv *env, int sock, netif *ifs, int family) {
- struct lifconf ifc;
- struct lifreq *ifr;
- int n;
- char *buf;
- struct lifnum numifs;
- unsigned bufsize;
-
- // Get the interface count
- numifs.lifn_family = family;
+ // call SIOCGLIFNUM to get the size of SIOCGIFCONF buffer
+ numifs.lifn_family = AF_INET;
numifs.lifn_flags = 0;
if (ioctl(sock, SIOCGLIFNUM, (char *)&numifs) < 0) {
JNU_ThrowByNameWithMessageAndLastError
@@ -1612,14 +1677,12 @@
return ifs;
}
- // Enumerate the interface configurations
- bufsize = numifs.lifn_count * sizeof (struct lifreq);
- CHECKED_MALLOC3(buf, char *, bufsize);
-
- ifc.lifc_family = family;
+ // call SIOCGLIFCONF to enumerate the interfaces
+ ifc.lifc_len = numifs.lifn_count * sizeof(struct lifreq);
+ CHECKED_MALLOC3(buf, char *, ifc.lifc_len);
+ ifc.lifc_buf = buf;
+ ifc.lifc_family = AF_INET;
ifc.lifc_flags = 0;
- ifc.lifc_len = bufsize;
- ifc.lifc_buf = buf;
if (ioctl(sock, SIOCGLIFCONF, (char *)&ifc) < 0) {
JNU_ThrowByNameWithMessageAndLastError
(env, JNU_JAVANETPKG "SocketException", "ioctl(SIOCGLIFCONF) failed");
@@ -1627,43 +1690,119 @@
return ifs;
}
- // Iterate through each interface
- ifr = ifc.lifc_req;
- for (n=0; n<numifs.lifn_count; n++, ifr++) {
- int index = -1;
- struct lifreq if2;
+ // iterate through each interface
+ ifreqP = ifc.lifc_req;
+ for (i = 0; i < numifs.lifn_count; i++, ifreqP++) {
+ struct sockaddr addr, *broadaddrP = NULL;
- // Ignore either IPv4 or IPv6 addresses
- if (ifr->lifr_addr.ss_family != family) {
+ // ignore non IPv4 interfaces
+ if (ifreqP->lifr_addr.ss_family != AF_INET) {
continue;
}
-#ifdef AF_INET6
- if (ifr->lifr_addr.ss_family == AF_INET6) {
- struct sockaddr_in6 *s6= (struct sockaddr_in6 *)&(ifr->lifr_addr);
- s6->sin6_scope_id = getIndex(sock, ifr->lifr_name);
+ // save socket address
+ memcpy(&addr, &(ifreqP->lifr_addr), sizeof(struct sockaddr));
+
+ // determine broadcast address, if applicable
+ if ((ioctl(sock, SIOCGLIFFLAGS, ifreqP) == 0) &&
+ ifreqP->lifr_flags & IFF_BROADCAST) {
+
+ // restore socket address to ifreqP
+ memcpy(&(ifreqP->lifr_addr), &addr, sizeof(struct sockaddr));
+
+ // query broadcast address and set pointer to it
+ if (ioctl(sock, SIOCGLIFBRDADDR, ifreqP) == 0) {
+ broadaddrP = (struct sockaddr *)&(ifreqP->lifr_broadaddr);
+ }
}
-#endif
// add to the list
- ifs = addif(env, sock,ifr->lifr_name, ifs,
- (struct sockaddr *)&(ifr->lifr_addr),
- NULL, NULL, family, (short)ifr->lifr_addrlen);
+ ifs = addif(env, sock, ifreqP->lifr_name, ifs,
+ &addr, broadaddrP, AF_INET, (short)ifreqP->lifr_addrlen);
- // If an exception occurred we return immediately
+ // if an exception occurred we return immediately
if ((*env)->ExceptionOccurred(env)) {
free(buf);
return ifs;
}
-
}
+ // free buffer
free(buf);
return ifs;
}
+#if defined(AF_INET6)
+
+/*
+ * Enumerates and returns all IPv6 interfaces on Solaris.
+ */
+static netif *enumIPv6Interfaces(JNIEnv *env, int sock, netif *ifs) {
+ struct lifconf ifc;
+ struct lifreq *ifreqP;
+ struct lifnum numifs;
+ char *buf = NULL;
+ unsigned i;
+
+ // call SIOCGLIFNUM to get the size of SIOCGLIFCONF buffer
+ numifs.lifn_family = AF_INET6;
+ numifs.lifn_flags = 0;
+ if (ioctl(sock, SIOCGLIFNUM, (char *)&numifs) < 0) {
+ JNU_ThrowByNameWithMessageAndLastError
+ (env, JNU_JAVANETPKG "SocketException", "ioctl(SIOCGLIFNUM) failed");
+ return ifs;
+ }
+
+ // call SIOCGLIFCONF to enumerate the interfaces
+ ifc.lifc_len = numifs.lifn_count * sizeof(struct lifreq);
+ CHECKED_MALLOC3(buf, char *, ifc.lifc_len);
+ ifc.lifc_buf = buf;
+ ifc.lifc_family = AF_INET6;
+ ifc.lifc_flags = 0;
+ if (ioctl(sock, SIOCGLIFCONF, (char *)&ifc) < 0) {
+ JNU_ThrowByNameWithMessageAndLastError
+ (env, JNU_JAVANETPKG "SocketException", "ioctl(SIOCGLIFCONF) failed");
+ free(buf);
+ return ifs;
+ }
+
+ // iterate through each interface
+ ifreqP = ifc.lifc_req;
+ for (i = 0; i < numifs.lifn_count; i++, ifreqP++) {
+
+ // ignore non IPv6 interfaces
+ if (ifreqP->lifr_addr.ss_family != AF_INET6) {
+ continue;
+ }
+
+ // set scope ID to interface index
+ ((struct sockaddr_in6 *)&(ifreqP->lifr_addr))->sin6_scope_id =
+ getIndex(sock, ifreqP->lifr_name);
+
+ // add to the list
+ ifs = addif(env, sock, ifreqP->lifr_name, ifs,
+ (struct sockaddr *)&(ifreqP->lifr_addr),
+ NULL, AF_INET6, (short)ifreqP->lifr_addrlen);
+
+ // if an exception occurred we return immediately
+ if ((*env)->ExceptionOccurred(env)) {
+ free(buf);
+ return ifs;
+ }
+ }
+
+ // free buffer
+ free(buf);
+ return ifs;
+}
+
+#endif /* AF_INET6 */
+
+/*
+ * Try to get the interface index.
+ * (Not supported on Solaris 2.6 or 7)
+ */
static int getIndex(int sock, const char *name) {
- // Try to get the interface index. (Not supported on Solaris 2.6 or 7)
struct lifreq if2;
memset((char *)&if2, 0, sizeof(if2));
strncpy(if2.lifr_name, name, sizeof(if2.lifr_name) - 1);
@@ -1676,69 +1815,12 @@
}
/*
- * Returns the IPv4 broadcast address of a named interface, if it exists.
- * Returns 0 if it doesn't have one.
- */
-static struct sockaddr *getBroadcast
- (JNIEnv *env, int sock, const char *ifname, struct sockaddr *brdcast_store)
-{
- struct sockaddr *ret = NULL;
- struct lifreq if2;
- memset((char *)&if2, 0, sizeof(if2));
- strncpy(if2.lifr_name, ifname, sizeof(if2.lifr_name) - 1);
-
- // Let's make sure the interface does have a broadcast address
- if (ioctl(sock, SIOCGLIFFLAGS, (char *)&if2) < 0) {
- JNU_ThrowByNameWithMessageAndLastError
- (env, JNU_JAVANETPKG "SocketException", "ioctl(SIOCGLIFFLAGS) failed");
- return ret;
- }
-
- if (if2.lifr_flags & IFF_BROADCAST) {
- // It does, let's retrieve it
- if (ioctl(sock, SIOCGLIFBRDADDR, (char *)&if2) < 0) {
- JNU_ThrowByNameWithMessageAndLastError
- (env, JNU_JAVANETPKG "SocketException", "ioctl(SIOCGLIFBRDADDR) failed");
- return ret;
- }
-
- ret = brdcast_store;
- memcpy(ret, &if2.lifr_broadaddr, sizeof(struct sockaddr));
- }
-
- return ret;
-}
-
-/*
- * Returns the IPv4 subnet prefix length (aka subnet mask) for the named
- * interface, if it has one, otherwise return -1.
- */
-static short getSubnet(JNIEnv *env, int sock, const char *ifname) {
- unsigned int mask;
- short ret;
- struct lifreq if2;
- memset((char *)&if2, 0, sizeof(if2));
- strncpy(if2.lifr_name, ifname, sizeof(if2.lifr_name) - 1);
-
- if (ioctl(sock, SIOCGLIFNETMASK, (char *)&if2) < 0) {
- JNU_ThrowByNameWithMessageAndLastError
- (env, JNU_JAVANETPKG "SocketException", "ioctl(SIOCGLIFNETMASK) failed");
- return -1;
- }
-
- return computeMaskFromAddress(&(if2.lifr_addr));
-}
-
-
-#define DEV_PREFIX "/dev/"
-
-/*
* Solaris specific DLPI code to get hardware address from a device.
* Unfortunately, at least up to Solaris X, you have to have special
* privileges (i.e. be root).
*/
static int getMacFromDevice
- (JNIEnv *env, const char* ifname, unsigned char* retbuf)
+ (JNIEnv *env, const char *ifname, unsigned char *retbuf)
{
char style1dev[MAXPATHLEN];
int fd;
@@ -1796,23 +1878,20 @@
* MAC address. Returns -1 if there is no hardware address on that interface.
*/
static int getMacAddress
- (JNIEnv *env, int sock, const char *ifname, const struct in_addr* addr,
+ (JNIEnv *env, int sock, const char *ifname, const struct in_addr *addr,
unsigned char *buf)
{
- struct arpreq arpreq;
- struct sockaddr_in* sin;
- struct sockaddr_in ipAddr;
+ struct lifreq if2;
int len, i;
- struct lifreq lif;
// First, try the new (S11) SIOCGLIFHWADDR ioctl(). If that fails
// try the old way.
- memset(&lif, 0, sizeof(lif));
- strlcpy(lif.lifr_name, ifname, sizeof(lif.lifr_name));
+ memset((char *)&if2, 0, sizeof(if2));
+ strncpy(if2.lifr_name, ifname, sizeof(if2.lifr_name) - 1);
- if (ioctl(sock, SIOCGLIFHWADDR, &lif) != -1) {
+ if (ioctl(sock, SIOCGLIFHWADDR, &if2) != -1) {
struct sockaddr_dl *sp;
- sp = (struct sockaddr_dl *)&lif.lifr_addr;
+ sp = (struct sockaddr_dl *)&if2.lifr_addr;
memcpy(buf, &sp->sdl_data[0], sp->sdl_alen);
return sp->sdl_alen;
}
@@ -1823,6 +1902,10 @@
if ((len = getMacFromDevice(env, ifname, buf)) == 0) {
// DLPI failed - trying to do arp lookup
+ struct arpreq arpreq;
+ struct sockaddr_in *sin;
+ struct sockaddr_in ipAddr;
+
if (addr == NULL) {
// No IPv4 address for that interface, so can't do an ARP lookup.
return -1;
@@ -1830,8 +1913,8 @@
len = 6; //???
- sin = (struct sockaddr_in *) &arpreq.arp_pa;
- memset((char *) &arpreq, 0, sizeof(struct arpreq));
+ sin = (struct sockaddr_in *)&arpreq.arp_pa;
+ memset((char *)&arpreq, 0, sizeof(struct arpreq));
ipAddr.sin_port = 0;
ipAddr.sin_family = AF_INET;
memcpy(&ipAddr.sin_addr, addr, sizeof(struct in_addr));
@@ -1842,19 +1925,19 @@
return -1;
}
- memcpy(buf, &arpreq.arp_ha.sa_data[0], len );
+ memcpy(buf, &arpreq.arp_ha.sa_data[0], len);
}
- // All bytes to 0 means no hardware address.
+ // all bytes to 0 means no hardware address
for (i = 0; i < len; i++) {
- if (buf[i] != 0)
- return len;
+ if (buf[i] != 0)
+ return len;
}
return -1;
}
-static int getMTU(JNIEnv *env, int sock, const char *ifname) {
+static int getMTU(JNIEnv *env, int sock, const char *ifname) {
struct lifreq if2;
memset((char *)&if2, 0, sizeof(if2));
strncpy(if2.lifr_name, ifname, sizeof(if2.lifr_name) - 1);
@@ -1881,47 +1964,43 @@
return 0;
}
-
-#endif /* __solaris__ */
-
+#endif /* __solaris__ */
/** BSD **/
-#ifdef _ALLBSD_SOURCE
+#if defined(_ALLBSD_SOURCE)
+#if defined(AF_INET6)
/*
- * Opens a socket for further ioct calls. Tries AF_INET socket first and
- * if it falls return AF_INET6 socket.
+ * Opens a socket for further ioctl calls. Tries AF_INET socket first and
+ * if it fails return AF_INET6 socket.
*/
-#ifdef AF_INET6
static int openSocketWithFallback(JNIEnv *env, const char *ifname) {
int sock;
- struct ifreq if2;
- if ((sock = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
- if (errno == EPROTONOSUPPORT) {
- if ((sock = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
- JNU_ThrowByNameWithMessageAndLastError
- (env, JNU_JAVANETPKG "SocketException", "IPV6 Socket creation failed");
- return -1;
- }
- } else { // errno is not NOSUPPORT
- JNU_ThrowByNameWithMessageAndLastError
- (env, JNU_JAVANETPKG "SocketException", "IPV4 Socket creation failed");
- return -1;
- }
- }
+ if ((sock = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
+ if (errno == EPROTONOSUPPORT) {
+ if ((sock = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
+ JNU_ThrowByNameWithMessageAndLastError
+ (env, JNU_JAVANETPKG "SocketException", "IPV6 Socket creation failed");
+ return -1;
+ }
+ } else { // errno is not NOSUPPORT
+ JNU_ThrowByNameWithMessageAndLastError
+ (env, JNU_JAVANETPKG "SocketException", "IPV4 Socket creation failed");
+ return -1;
+ }
+ }
- return sock;
+ return sock;
}
-
#else
static int openSocketWithFallback(JNIEnv *env, const char *ifname) {
- return openSocket(env,AF_INET);
+ return openSocket(env, AF_INET);
}
#endif
/*
- * Enumerates and returns all IPv4 interfaces.
+ * Enumerates and returns all IPv4 interfaces on BSD.
*/
static netif *enumIPv4Interfaces(JNIEnv *env, int sock, netif *ifs) {
struct ifaddrs *ifa, *origifa;
@@ -1933,23 +2012,25 @@
}
for (ifa = origifa; ifa != NULL; ifa = ifa->ifa_next) {
- struct sockaddr* ifa_broadaddr = NULL;
+ struct sockaddr *broadaddrP = NULL;
- // Skip non-AF_INET entries.
+ // ignore non IPv4 interfaces
if (ifa->ifa_addr == NULL || ifa->ifa_addr->sa_family != AF_INET)
continue;
// set ifa_broadaddr, if there is one
if ((ifa->ifa_flags & IFF_POINTOPOINT) == 0 &&
ifa->ifa_flags & IFF_BROADCAST) {
- ifa_broadaddr = ifa->ifa_broadaddr;
+ broadaddrP = ifa->ifa_dstaddr;
}
- // Add to the list.
+ // add interface to the list
ifs = addif(env, sock, ifa->ifa_name, ifs, ifa->ifa_addr,
- ifa_broadaddr, ifa->ifa_netmask, AF_INET, 0);
+ broadaddrP, AF_INET,
+ translateIPv4AddressToPrefix((struct sockaddr_in *)
+ ifa->ifa_netmask));
- // If an exception occurred then free the list.
+ // if an exception occurred then free the list
if ((*env)->ExceptionOccurred(env)) {
freeifaddrs(origifa);
freeif(ifs);
@@ -1957,44 +2038,18 @@
}
}
- // Free socket and buffer
+ // free ifaddrs buffer
freeifaddrs(origifa);
return ifs;
}
-#ifdef AF_INET6
-/*
- * Determines the prefix on BSD for IPv6 interfaces.
- */
-static int prefix(void *val, int size) {
- u_char *name = (u_char *)val;
- int byte, bit, prefix = 0;
-
- for (byte = 0; byte < size; byte++, prefix += 8)
- if (name[byte] != 0xff)
- break;
- if (byte == size)
- return prefix;
- for (bit = 7; bit != 0; bit--, prefix++)
- if (!(name[byte] & (1 << bit)))
- break;
- for (; bit != 0; bit--)
- if (name[byte] & (1 << bit))
- return (0);
- byte++;
- for (; byte < size; byte++)
- if (name[byte])
- return (0);
- return prefix;
-}
+#if defined(AF_INET6)
/*
* Enumerates and returns all IPv6 interfaces on BSD.
*/
static netif *enumIPv6Interfaces(JNIEnv *env, int sock, netif *ifs) {
struct ifaddrs *ifa, *origifa;
- struct sockaddr_in6 *sin6;
- struct in6_ifreq ifr6;
if (getifaddrs(&origifa) != 0) {
JNU_ThrowByNameWithMessageAndLastError
@@ -2003,31 +2058,21 @@
}
for (ifa = origifa; ifa != NULL; ifa = ifa->ifa_next) {
-
- // Skip non-AF_INET6 entries.
+ // ignore non IPv6 interfaces
if (ifa->ifa_addr == NULL || ifa->ifa_addr->sa_family != AF_INET6)
continue;
- memset(&ifr6, 0, sizeof(ifr6));
- strlcpy(ifr6.ifr_name, ifa->ifa_name, sizeof(ifr6.ifr_name));
- memcpy(&ifr6.ifr_addr, ifa->ifa_addr,
- MIN(sizeof(ifr6.ifr_addr), ifa->ifa_addr->sa_len));
+ // set scope ID to interface index
+ ((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_scope_id =
+ getIndex(sock, ifa->ifa_name);
- if (ioctl(sock, SIOCGIFNETMASK_IN6, (caddr_t)&ifr6) < 0) {
- JNU_ThrowByNameWithMessageAndLastError
- (env, JNU_JAVANETPKG "SocketException", "ioctl(SIOCGIFNETMASK_IN6) failed");
- freeifaddrs(origifa);
- freeif(ifs);
- return NULL;
- }
+ // add interface to the list
+ ifs = addif(env, sock, ifa->ifa_name, ifs, ifa->ifa_addr, NULL,
+ AF_INET6,
+ translateIPv6AddressToPrefix((struct sockaddr_in6 *)
+ ifa->ifa_netmask));
- // Add to the list.
- sin6 = (struct sockaddr_in6 *)&ifr6.ifr_addr;
- ifs = addif(env, sock, ifa->ifa_name, ifs, ifa->ifa_addr, NULL, NULL,
- AF_INET6,
- (short)prefix(&sin6->sin6_addr, sizeof(struct in6_addr)));
-
- // If an exception occurred then free the list.
+ // if an exception occurred then free the list
if ((*env)->ExceptionOccurred(env)) {
freeifaddrs(origifa);
freeif(ifs);
@@ -2035,16 +2080,21 @@
}
}
- // Free socket and ifaddrs buffer
+ // free ifaddrs buffer
freeifaddrs(origifa);
return ifs;
}
-#endif
+
+#endif /* AF_INET6 */
+/*
+ * Try to get the interface index.
+ */
static int getIndex(int sock, const char *name) {
-#ifdef __FreeBSD__
- // Try to get the interface index
- // (Not supported on Solaris 2.6 or 7)
+#if !defined(__FreeBSD__)
+ int index = if_nametoindex(name);
+ return (index == 0) ? -1 : index;
+#else
struct ifreq if2;
memset((char *)&if2, 0, sizeof(if2));
strncpy(if2.ifr_name, name, sizeof(if2.ifr_name) - 1);
@@ -2054,74 +2104,16 @@
}
return if2.ifr_index;
-#else
- // Try to get the interface index using BSD specific if_nametoindex
- int index = if_nametoindex(name);
- return (index == 0) ? -1 : index;
#endif
}
/*
- * Returns the IPv4 broadcast address of a named interface, if it exists.
- * Returns 0 if it doesn't have one.
- */
-static struct sockaddr *getBroadcast
- (JNIEnv *env, int sock, const char *ifname, struct sockaddr *brdcast_store)
-{
- struct sockaddr *ret = NULL;
- struct ifreq if2;
- memset((char *)&if2, 0, sizeof(if2));
- strncpy(if2.ifr_name, ifname, sizeof(if2.ifr_name) - 1);
-
- // Make sure the interface does have a broadcast address
- if (ioctl(sock, SIOCGIFFLAGS, (char *)&if2) < 0) {
- JNU_ThrowByNameWithMessageAndLastError
- (env, JNU_JAVANETPKG "SocketException", "ioctl(SIOCGIFFLAGS) failed");
- return ret;
- }
-
- if (if2.ifr_flags & IFF_BROADCAST) {
- // It does, let's retrieve it
- if (ioctl(sock, SIOCGIFBRDADDR, (char *)&if2) < 0) {
- JNU_ThrowByNameWithMessageAndLastError
- (env, JNU_JAVANETPKG "SocketException", "ioctl(SIOCGIFBRDADDR) failed");
- return ret;
- }
-
- ret = brdcast_store;
- memcpy(ret, &if2.ifr_broadaddr, sizeof(struct sockaddr));
- }
-
- return ret;
-}
-
-/*
- * Returns the IPv4 subnet prefix length (aka subnet mask) for the named
- * interface, if it has one, otherwise return -1.
- */
-static short getSubnet(JNIEnv *env, int sock, const char *ifname) {
- unsigned int mask;
- short ret;
- struct ifreq if2;
- memset((char *)&if2, 0, sizeof(if2));
- strncpy(if2.ifr_name, ifname, sizeof(if2.ifr_name) - 1);
-
- if (ioctl(sock, SIOCGIFNETMASK, (char *)&if2) < 0) {
- JNU_ThrowByNameWithMessageAndLastError
- (env, JNU_JAVANETPKG "SocketException", "ioctl(SIOCGIFNETMASK) failed");
- return -1;
- }
-
- return computeMaskFromAddress(&(if2.ifr_addr));
-}
-
-/*
* Gets the Hardware address (usually MAC address) for the named interface.
- * return puts the data in buf, and returns the length, in byte, of the
+ * On return puts the data in buf, and returns the length, in byte, of the
* MAC address. Returns -1 if there is no hardware address on that interface.
*/
static int getMacAddress
- (JNIEnv *env, int sock, const char* ifname, const struct in_addr* addr,
+ (JNIEnv *env, int sock, const char *ifname, const struct in_addr *addr,
unsigned char *buf)
{
struct ifaddrs *ifa0, *ifa;
@@ -2150,7 +2142,7 @@
return -1;
}
-static int getMTU(JNIEnv *env, int sock, const char *ifname) {
+static int getMTU(JNIEnv *env, int sock, const char *ifname) {
struct ifreq if2;
memset((char *)&if2, 0, sizeof(if2));
strncpy(if2.ifr_name, ifname, sizeof(if2.ifr_name) - 1);
@@ -2161,12 +2153,11 @@
return -1;
}
- return if2.ifr_mtu;
+ return if2.ifr_mtu;
}
static int getFlags(int sock, const char *ifname, int *flags) {
struct ifreq if2;
- int ret = -1;
memset((char *)&if2, 0, sizeof(if2));
strncpy(if2.ifr_name, ifname, sizeof(if2.ifr_name) - 1);
@@ -2181,4 +2172,4 @@
}
return 0;
}
-#endif /* __ALLBSD_SOURCE__ */
+#endif /* _ALLBSD_SOURCE */