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newInetAddress and newInetSocketAddress work

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allow newInetSocketAddress to return NULL if given empty address
This commit is contained in:
Brenton Bostick 2023-02-01 16:01:16 -05:00
parent e1c16a8e68
commit 132bff25df
2 changed files with 27 additions and 53 deletions
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45
java/jni/ZT_jniutils.cpp
View File

@ -132,6 +132,10 @@ jobject newInetAddress(JNIEnv *env, const sockaddr_storage &addr)
InetAddress_class, InetAddress_getByAddress_method, buff); InetAddress_class, InetAddress_getByAddress_method, buff);
} }
break; break;
default:
{
assert(false && "addr.ss_family is neither AF_INET6 nor AF_INET");
}
} }
if(env->ExceptionCheck() || inetAddressObj == NULL) { if(env->ExceptionCheck() || inetAddressObj == NULL) {
LOGE("Error creating InetAddress object"); LOGE("Error creating InetAddress object");
@ -171,11 +175,16 @@ int addressPort(const sockaddr_storage addr) {
return port; return port;
} }
//
// addr may be empty
//
// may return NULL
//
jobject newInetSocketAddress(JNIEnv *env, const sockaddr_storage &addr) jobject newInetSocketAddress(JNIEnv *env, const sockaddr_storage &addr)
{ {
LOGV("newInetSocketAddress Called"); LOGV("newInetSocketAddress Called");
if(addr.ss_family == 0) if(isSocketAddressEmpty(addr))
{ {
return NULL; return NULL;
} }
@ -184,39 +193,15 @@ jobject newInetSocketAddress(JNIEnv *env, const sockaddr_storage &addr)
if(env->ExceptionCheck() || inetAddressObject == NULL) if(env->ExceptionCheck() || inetAddressObject == NULL)
{ {
LOGE("Error creating new inet address");
return NULL; return NULL;
} }
int port = 0; int port = addressPort(addr);
switch(addr.ss_family)
{
case AF_INET6:
{
LOGV("IPV6 Address");
sockaddr_in6 *ipv6 = (sockaddr_in6*)&addr;
port = ntohs(ipv6->sin6_port);
LOGV("Port %d", port);
}
break;
case AF_INET:
{
LOGV("IPV4 Address");
sockaddr_in *ipv4 = (sockaddr_in*)&addr;
port = ntohs(ipv4->sin_port);
LOGV("Port: %d", port);
}
break;
default:
{
break;
}
}
jobject inetSocketAddressObject = env->NewObject(InetSocketAddress_class, InetSocketAddress_ctor, inetAddressObject, port); jobject inetSocketAddressObject = env->NewObject(InetSocketAddress_class, InetSocketAddress_ctor, inetAddressObject, port);
if(env->ExceptionCheck() || inetSocketAddressObject == NULL) { if(env->ExceptionCheck() || inetSocketAddressObject == NULL) {
LOGE("Error creating InetSocketAddress object"); LOGE("Error creating InetSocketAddress object");
return NULL;
} }
return inetSocketAddressObject; return inetSocketAddressObject;
} }
@ -225,9 +210,11 @@ jobject newPeerPhysicalPath(JNIEnv *env, const ZT_PeerPhysicalPath &ppp)
{ {
LOGV("newPeerPhysicalPath Called"); LOGV("newPeerPhysicalPath Called");
//
// may be NULL
//
jobject addressObject = newInetSocketAddress(env, ppp.address); jobject addressObject = newInetSocketAddress(env, ppp.address);
if(env->ExceptionCheck() || addressObject == NULL) { if(env->ExceptionCheck()) {
LOGE("Error creating InetSocketAddress object");
return NULL; return NULL;
} }

35
java/jni/com_zerotierone_sdk_Node.cpp
View File

@ -414,12 +414,18 @@ namespace {
return -100; return -100;
} }
//
// may be NULL
//
jobject remoteAddressObj = newInetSocketAddress(env, *remoteAddress); jobject remoteAddressObj = newInetSocketAddress(env, *remoteAddress);
if (env->ExceptionCheck()) {
return -101;
}
const unsigned char *bytes = static_cast<const unsigned char *>(buffer); const unsigned char *bytes = static_cast<const unsigned char *>(buffer);
jbyteArray bufferObj = newByteArray(env, bytes, bufferSize); jbyteArray bufferObj = newByteArray(env, bytes, bufferSize);
if (env->ExceptionCheck() || bufferObj == NULL) if (env->ExceptionCheck() || bufferObj == NULL)
{ {
return -101; return -102;
} }
int retval = env->CallIntMethod(ref->packetSender, PacketSender_onSendPacketRequested_method, localSocket, remoteAddressObj, bufferObj); int retval = env->CallIntMethod(ref->packetSender, PacketSender_onSendPacketRequested_method, localSocket, remoteAddressObj, bufferObj);
@ -446,30 +452,11 @@ namespace {
ref->jvm->GetEnv((void**)&env, JNI_VERSION_1_6); ref->jvm->GetEnv((void**)&env, JNI_VERSION_1_6);
// //
// was: // may be NULL
// struct sockaddr_storage nullAddress = {0};
// //
// but was getting this warning: jobject remoteAddressObj = newInetSocketAddress(env, *remoteAddress);
// warning: suggest braces around initialization of subobject if (env->ExceptionCheck()) {
// return true;
// when building ZeroTierOne
//
struct sockaddr_storage nullAddress;
//
// It is possible to assume knowledge about internals of sockaddr_storage and construct
// correct 0-initializer, but it is simpler to just treat sockaddr_storage as opaque and
// use memset here to fill with 0
//
// This is also done in InetAddress.hpp for InetAddress
//
memset(&nullAddress, 0, sizeof(sockaddr_storage));
jobject remoteAddressObj = NULL;
if(memcmp(remoteAddress, &nullAddress, sizeof(sockaddr_storage)) != 0)
{
remoteAddressObj = newInetSocketAddress(env, *remoteAddress);
} }
return env->CallBooleanMethod(ref->pathChecker, PathChecker_onPathCheck_method, address, localSocket, remoteAddressObj); return env->CallBooleanMethod(ref->pathChecker, PathChecker_onPathCheck_method, address, localSocket, remoteAddressObj);