LineageOS/android_packages_modules_Connectivity
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Make the interface with DHCP IPv6 capable.

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It doesn't work (yet) for IPv6, but we can remove v4-centric notions from the framework.

bug:2542681
Change-Id: I21c058f5c88d07706c9265bf0ea902fc90357e56
This commit is contained in:
Robert Greenwalt
2011-01-14 16:29:58 -08:00
parent 9f83abb01a
commit 7baf8a8f08
2 changed files with 64 additions and 32 deletions
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25
core/java/android/net/NetworkUtils.java
View File

@@ -77,7 +77,7 @@ public class NetworkUtils {
* the IP address information.
* @return {@code true} for success, {@code false} for failure
*/
public native static boolean runDhcp(String interfaceName, DhcpInfo ipInfo);
public native static boolean runDhcp(String interfaceName, DhcpInfoInternal ipInfo);
/**
* Shut down the DHCP client daemon.
@@ -149,6 +149,29 @@ public class NetworkUtils {
return Integer.reverseBytes(value);
}
/**
* Create an InetAddress from a string where the string must be a standard
* representation of a V4 or V6 address. Avoids doing a DNS lookup on failure
* but it will throw an IllegalArgumentException in that case.
* @param addrString
* @return the InetAddress
* @hide
*/
public static InetAddress numericToInetAddress(String addrString)
throws IllegalArgumentException {
// TODO - do this for real, using a hidden method on InetAddress that aborts
// instead of doing dns step
if (!InetAddress.isNumeric(addrString)) {
throw new IllegalArgumentException("numericToInetAddress with non numeric: " +
addrString);
}
try {
return InetAddress.getByName(addrString);
} catch (UnknownHostException e) {
throw new IllegalArgumentException(e);
}
}
/**
* Add a default route through the specified gateway.
* @param interfaceName interface on which the route should be added

71
core/jni/android_net_NetUtils.cpp
View File

@@ -21,6 +21,7 @@
#include <android_runtime/AndroidRuntime.h>
#include <utils/Log.h>
#include <arpa/inet.h>
#include <cutils/properties.h>
extern "C" {
int ifc_enable(const char *ifname);
@@ -32,12 +33,12 @@ int ifc_remove_default_route(const char *ifname);
int ifc_reset_connections(const char *ifname);
int dhcp_do_request(const char *ifname,
in_addr_t *ipaddr,
in_addr_t *gateway,
in_addr_t *mask,
in_addr_t *dns1,
in_addr_t *dns2,
in_addr_t *server,
const char *ipaddr,
const char *gateway,
uint32_t *prefixLength,
const char *dns1,
const char *dns2,
const char *server,
uint32_t *lease);
int dhcp_stop(const char *ifname);
int dhcp_release_lease(const char *ifname);
@@ -54,16 +55,16 @@ namespace android {
* to look them up every time.
*/
static struct fieldIds {
jclass dhcpInfoClass;
jclass dhcpInfoInternalClass;
jmethodID constructorId;
jfieldID ipaddress;
jfieldID gateway;
jfieldID netmask;
jfieldID prefixLength;
jfieldID dns1;
jfieldID dns2;
jfieldID serverAddress;
jfieldID leaseDuration;
} dhcpInfoFieldIds;
} dhcpInfoInternalFieldIds;
static jint android_net_utils_enableInterface(JNIEnv* env, jobject clazz, jstring ifname)
{
@@ -148,21 +149,29 @@ static jint android_net_utils_resetConnections(JNIEnv* env, jobject clazz, jstri
static jboolean android_net_utils_runDhcp(JNIEnv* env, jobject clazz, jstring ifname, jobject info)
{
int result;
in_addr_t ipaddr, gateway, mask, dns1, dns2, server;
char ipaddr[PROPERTY_VALUE_MAX];
uint32_t prefixLength;
char gateway[PROPERTY_VALUE_MAX];
char dns1[PROPERTY_VALUE_MAX];
char dns2[PROPERTY_VALUE_MAX];
char server[PROPERTY_VALUE_MAX];
uint32_t lease;
const char *nameStr = env->GetStringUTFChars(ifname, NULL);
result = ::dhcp_do_request(nameStr, &ipaddr, &gateway, &mask,
&dns1, &dns2, &server, &lease);
if (nameStr == NULL) return (jboolean)false;
result = ::dhcp_do_request(nameStr, ipaddr, gateway, &prefixLength,
dns1, dns2, server, &lease);
env->ReleaseStringUTFChars(ifname, nameStr);
if (result == 0 && dhcpInfoFieldIds.dhcpInfoClass != NULL) {
env->SetIntField(info, dhcpInfoFieldIds.ipaddress, ipaddr);
env->SetIntField(info, dhcpInfoFieldIds.gateway, gateway);
env->SetIntField(info, dhcpInfoFieldIds.netmask, mask);
env->SetIntField(info, dhcpInfoFieldIds.dns1, dns1);
env->SetIntField(info, dhcpInfoFieldIds.dns2, dns2);
env->SetIntField(info, dhcpInfoFieldIds.serverAddress, server);
env->SetIntField(info, dhcpInfoFieldIds.leaseDuration, lease);
if (result == 0 && dhcpInfoInternalFieldIds.dhcpInfoInternalClass != NULL) {
env->SetObjectField(info, dhcpInfoInternalFieldIds.ipaddress, env->NewStringUTF(ipaddr));
env->SetObjectField(info, dhcpInfoInternalFieldIds.gateway, env->NewStringUTF(gateway));
env->SetIntField(info, dhcpInfoInternalFieldIds.prefixLength, prefixLength);
env->SetObjectField(info, dhcpInfoInternalFieldIds.dns1, env->NewStringUTF(dns1));
env->SetObjectField(info, dhcpInfoInternalFieldIds.dns2, env->NewStringUTF(dns2));
env->SetObjectField(info, dhcpInfoInternalFieldIds.serverAddress,
env->NewStringUTF(server));
env->SetIntField(info, dhcpInfoInternalFieldIds.leaseDuration, lease);
}
return (jboolean)(result == 0);
}
@@ -209,7 +218,7 @@ static JNINativeMethod gNetworkUtilMethods[] = {
(void *)android_net_utils_getDefaultRoute },
{ "removeDefaultRoute", "(Ljava/lang/String;)I", (void *)android_net_utils_removeDefaultRoute },
{ "resetConnections", "(Ljava/lang/String;)I", (void *)android_net_utils_resetConnections },
{ "runDhcp", "(Ljava/lang/String;Landroid/net/DhcpInfo;)Z", (void *)android_net_utils_runDhcp },
{ "runDhcp", "(Ljava/lang/String;Landroid/net/DhcpInfoInternal;)Z", (void *)android_net_utils_runDhcp },
{ "stopDhcp", "(Ljava/lang/String;)Z", (void *)android_net_utils_stopDhcp },
{ "releaseDhcpLease", "(Ljava/lang/String;)Z", (void *)android_net_utils_releaseDhcpLease },
{ "getDhcpError", "()Ljava/lang/String;", (void*) android_net_utils_getDhcpError },
@@ -220,16 +229,16 @@ int register_android_net_NetworkUtils(JNIEnv* env)
jclass netutils = env->FindClass(NETUTILS_PKG_NAME);
LOG_FATAL_IF(netutils == NULL, "Unable to find class " NETUTILS_PKG_NAME);
dhcpInfoFieldIds.dhcpInfoClass = env->FindClass("android/net/DhcpInfo");
if (dhcpInfoFieldIds.dhcpInfoClass != NULL) {
dhcpInfoFieldIds.constructorId = env->GetMethodID(dhcpInfoFieldIds.dhcpInfoClass, "<init>", "()V");
dhcpInfoFieldIds.ipaddress = env->GetFieldID(dhcpInfoFieldIds.dhcpInfoClass, "ipAddress", "I");
dhcpInfoFieldIds.gateway = env->GetFieldID(dhcpInfoFieldIds.dhcpInfoClass, "gateway", "I");
dhcpInfoFieldIds.netmask = env->GetFieldID(dhcpInfoFieldIds.dhcpInfoClass, "netmask", "I");
dhcpInfoFieldIds.dns1 = env->GetFieldID(dhcpInfoFieldIds.dhcpInfoClass, "dns1", "I");
dhcpInfoFieldIds.dns2 = env->GetFieldID(dhcpInfoFieldIds.dhcpInfoClass, "dns2", "I");
dhcpInfoFieldIds.serverAddress = env->GetFieldID(dhcpInfoFieldIds.dhcpInfoClass, "serverAddress", "I");
dhcpInfoFieldIds.leaseDuration = env->GetFieldID(dhcpInfoFieldIds.dhcpInfoClass, "leaseDuration", "I");
dhcpInfoInternalFieldIds.dhcpInfoInternalClass = env->FindClass("android/net/DhcpInfoInternal");
if (dhcpInfoInternalFieldIds.dhcpInfoInternalClass != NULL) {
dhcpInfoInternalFieldIds.constructorId = env->GetMethodID(dhcpInfoInternalFieldIds.dhcpInfoInternalClass, "<init>", "()V");
dhcpInfoInternalFieldIds.ipaddress = env->GetFieldID(dhcpInfoInternalFieldIds.dhcpInfoInternalClass, "ipAddress", "Ljava/lang/String;");
dhcpInfoInternalFieldIds.gateway = env->GetFieldID(dhcpInfoInternalFieldIds.dhcpInfoInternalClass, "gateway", "Ljava/lang/String;");
dhcpInfoInternalFieldIds.prefixLength = env->GetFieldID(dhcpInfoInternalFieldIds.dhcpInfoInternalClass, "prefixLength", "I");
dhcpInfoInternalFieldIds.dns1 = env->GetFieldID(dhcpInfoInternalFieldIds.dhcpInfoInternalClass, "dns1", "Ljava/lang/String;");
dhcpInfoInternalFieldIds.dns2 = env->GetFieldID(dhcpInfoInternalFieldIds.dhcpInfoInternalClass, "dns2", "Ljava/lang/String;");
dhcpInfoInternalFieldIds.serverAddress = env->GetFieldID(dhcpInfoInternalFieldIds.dhcpInfoInternalClass, "serverAddress", "Ljava/lang/String;");
dhcpInfoInternalFieldIds.leaseDuration = env->GetFieldID(dhcpInfoInternalFieldIds.dhcpInfoInternalClass, "leaseDuration", "I");
}
return AndroidRuntime::registerNativeMethods(env,