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Move module sources to packages/Connectivity

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Files that are planned to be part of the connectivity module are grouped
in packages/Connectivity, so they can be built separately and moved in
one operation with their history into packages/modules/Connectivity.

This places the files in the existing framework-connectivity-sources
filegroup instead of the current framework-core-sources filegroup. Both
are used the same way in framework-non-updatable-sources.

Bug: 171540887
Test: m
Change-Id: I62d9d91574ace6f5c4624035d190260c3126b91e
This commit is contained in:
Remi NGUYEN VAN
2021-01-15 18:08:24 +09:00
parent 563414b082
commit 0f8f6307e7
74 changed files with 2210 additions and 0 deletions
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549
framework/src/android/net/LinkAddress.java Normal file
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@@ -0,0 +1,549 @@
/*
* Copyright (C) 2010 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package android.net;
import static android.system.OsConstants.IFA_F_DADFAILED;
import static android.system.OsConstants.IFA_F_DEPRECATED;
import static android.system.OsConstants.IFA_F_OPTIMISTIC;
import static android.system.OsConstants.IFA_F_PERMANENT;
import static android.system.OsConstants.IFA_F_TENTATIVE;
import static android.system.OsConstants.RT_SCOPE_HOST;
import static android.system.OsConstants.RT_SCOPE_LINK;
import static android.system.OsConstants.RT_SCOPE_SITE;
import static android.system.OsConstants.RT_SCOPE_UNIVERSE;
import android.annotation.IntRange;
import android.annotation.NonNull;
import android.annotation.Nullable;
import android.annotation.SystemApi;
import android.compat.annotation.UnsupportedAppUsage;
import android.os.Build;
import android.os.Parcel;
import android.os.Parcelable;
import android.os.SystemClock;
import android.util.Pair;
import java.net.Inet4Address;
import java.net.Inet6Address;
import java.net.InetAddress;
import java.net.InterfaceAddress;
import java.net.UnknownHostException;
import java.util.Objects;
/**
* Identifies an IP address on a network link.
*
* A {@code LinkAddress} consists of:
* <ul>
* <li>An IP address and prefix length (e.g., {@code 2001:db8::1/64} or {@code 192.0.2.1/24}).
* The address must be unicast, as multicast addresses cannot be assigned to interfaces.
* <li>Address flags: A bitmask of {@code OsConstants.IFA_F_*} values representing properties
* of the address (e.g., {@code android.system.OsConstants.IFA_F_OPTIMISTIC}).
* <li>Address scope: One of the {@code OsConstants.IFA_F_*} values; defines the scope in which
* the address is unique (e.g.,
* {@code android.system.OsConstants.RT_SCOPE_LINK} or
* {@code android.system.OsConstants.RT_SCOPE_UNIVERSE}).
* </ul>
*/
public class LinkAddress implements Parcelable {
/**
* Indicates the deprecation or expiration time is unknown
* @hide
*/
@SystemApi
public static final long LIFETIME_UNKNOWN = -1;
/**
* Indicates this address is permanent.
* @hide
*/
@SystemApi
public static final long LIFETIME_PERMANENT = Long.MAX_VALUE;
/**
* IPv4 or IPv6 address.
*/
@UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.P, trackingBug = 115609023)
private InetAddress address;
/**
* Prefix length.
*/
@UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.P, trackingBug = 115609023)
private int prefixLength;
/**
* Address flags. A bitmask of {@code IFA_F_*} values. Note that {@link #getFlags()} may not
* return these exact values. For example, it may set or clear the {@code IFA_F_DEPRECATED}
* flag depending on the current preferred lifetime.
*/
private int flags;
/**
* Address scope. One of the RT_SCOPE_* constants.
*/
private int scope;
/**
* The time, as reported by {@link SystemClock#elapsedRealtime}, when this LinkAddress will be
* or was deprecated. At the time existing connections can still use this address until it
* expires, but new connections should use the new address. {@link #LIFETIME_UNKNOWN} indicates
* this information is not available. {@link #LIFETIME_PERMANENT} indicates this
* {@link LinkAddress} will never be deprecated.
*/
private long deprecationTime;
/**
* The time, as reported by {@link SystemClock#elapsedRealtime}, when this {@link LinkAddress}
* will expire and be removed from the interface. {@link #LIFETIME_UNKNOWN} indicates this
* information is not available. {@link #LIFETIME_PERMANENT} indicates this {@link LinkAddress}
* will never expire.
*/
private long expirationTime;
/**
* Utility function to determines the scope of a unicast address. Per RFC 4291 section 2.5 and
* RFC 6724 section 3.2.
* @hide
*/
private static int scopeForUnicastAddress(InetAddress addr) {
if (addr.isAnyLocalAddress()) {
return RT_SCOPE_HOST;
}
if (addr.isLoopbackAddress() || addr.isLinkLocalAddress()) {
return RT_SCOPE_LINK;
}
// isSiteLocalAddress() returns true for private IPv4 addresses, but RFC 6724 section 3.2
// says that they are assigned global scope.
if (!(addr instanceof Inet4Address) && addr.isSiteLocalAddress()) {
return RT_SCOPE_SITE;
}
return RT_SCOPE_UNIVERSE;
}
/**
* Utility function to check if |address| is a Unique Local IPv6 Unicast Address
* (a.k.a. "ULA"; RFC 4193).
*
* Per RFC 4193 section 8, fc00::/7 identifies these addresses.
*/
private boolean isIpv6ULA() {
if (isIpv6()) {
byte[] bytes = address.getAddress();
return ((bytes[0] & (byte)0xfe) == (byte)0xfc);
}
return false;
}
/**
* @return true if the address is IPv6.
* @hide
*/
@SystemApi
public boolean isIpv6() {
return address instanceof Inet6Address;
}
/**
* For backward compatibility.
* This was annotated with @UnsupportedAppUsage in P, so we can't remove the method completely
* just yet.
* @return true if the address is IPv6.
* @hide
*/
@UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.P)
public boolean isIPv6() {
return isIpv6();
}
/**
* @return true if the address is IPv4 or is a mapped IPv4 address.
* @hide
*/
@SystemApi
public boolean isIpv4() {
return address instanceof Inet4Address;
}
/**
* Utility function for the constructors.
*/
private void init(InetAddress address, int prefixLength, int flags, int scope,
long deprecationTime, long expirationTime) {
if (address == null ||
address.isMulticastAddress() ||
prefixLength < 0 ||
(address instanceof Inet4Address && prefixLength > 32) ||
(prefixLength > 128)) {
throw new IllegalArgumentException("Bad LinkAddress params " + address +
"/" + prefixLength);
}
// deprecation time and expiration time must be both provided, or neither.
if ((deprecationTime == LIFETIME_UNKNOWN) != (expirationTime == LIFETIME_UNKNOWN)) {
throw new IllegalArgumentException(
"Must not specify only one of deprecation time and expiration time");
}
// deprecation time needs to be a positive value.
if (deprecationTime != LIFETIME_UNKNOWN && deprecationTime < 0) {
throw new IllegalArgumentException("invalid deprecation time " + deprecationTime);
}
// expiration time needs to be a positive value.
if (expirationTime != LIFETIME_UNKNOWN && expirationTime < 0) {
throw new IllegalArgumentException("invalid expiration time " + expirationTime);
}
// expiration time can't be earlier than deprecation time
if (deprecationTime != LIFETIME_UNKNOWN && expirationTime != LIFETIME_UNKNOWN
&& expirationTime < deprecationTime) {
throw new IllegalArgumentException("expiration earlier than deprecation ("
+ deprecationTime + ", " + expirationTime + ")");
}
this.address = address;
this.prefixLength = prefixLength;
this.flags = flags;
this.scope = scope;
this.deprecationTime = deprecationTime;
this.expirationTime = expirationTime;
}
/**
* Constructs a new {@code LinkAddress} from an {@code InetAddress} and prefix length, with
* the specified flags and scope. Flags and scope are not checked for validity.
*
* @param address The IP address.
* @param prefixLength The prefix length. Must be &gt;= 0 and &lt;= (32 or 128) (IPv4 or IPv6).
* @param flags A bitmask of {@code IFA_F_*} values representing properties of the address.
* @param scope An integer defining the scope in which the address is unique (e.g.,
* {@link OsConstants#RT_SCOPE_LINK} or {@link OsConstants#RT_SCOPE_SITE}).
* @hide
*/
@SystemApi
public LinkAddress(@NonNull InetAddress address, @IntRange(from = 0, to = 128) int prefixLength,
int flags, int scope) {
init(address, prefixLength, flags, scope, LIFETIME_UNKNOWN, LIFETIME_UNKNOWN);
}
/**
* Constructs a new {@code LinkAddress} from an {@code InetAddress}, prefix length, with
* the specified flags, scope, deprecation time, and expiration time. Flags and scope are not
* checked for validity. The value of the {@code IFA_F_DEPRECATED} and {@code IFA_F_PERMANENT}
* flag will be adjusted based on the passed-in lifetimes.
*
* @param address The IP address.
* @param prefixLength The prefix length. Must be &gt;= 0 and &lt;= (32 or 128) (IPv4 or IPv6).
* @param flags A bitmask of {@code IFA_F_*} values representing properties of the address.
* @param scope An integer defining the scope in which the address is unique (e.g.,
* {@link OsConstants#RT_SCOPE_LINK} or {@link OsConstants#RT_SCOPE_SITE}).
* @param deprecationTime The time, as reported by {@link SystemClock#elapsedRealtime}, when
* this {@link LinkAddress} will be or was deprecated. At the time
* existing connections can still use this address until it expires, but
* new connections should use the new address. {@link #LIFETIME_UNKNOWN}
* indicates this information is not available.
* {@link #LIFETIME_PERMANENT} indicates this {@link LinkAddress} will
* never be deprecated.
* @param expirationTime The time, as reported by {@link SystemClock#elapsedRealtime}, when this
* {@link LinkAddress} will expire and be removed from the interface.
* {@link #LIFETIME_UNKNOWN} indicates this information is not available.
* {@link #LIFETIME_PERMANENT} indicates this {@link LinkAddress} will
* never expire.
* @hide
*/
@SystemApi
public LinkAddress(@NonNull InetAddress address, @IntRange(from = 0, to = 128) int prefixLength,
int flags, int scope, long deprecationTime, long expirationTime) {
init(address, prefixLength, flags, scope, deprecationTime, expirationTime);
}
/**
* Constructs a new {@code LinkAddress} from an {@code InetAddress} and a prefix length.
* The flags are set to zero and the scope is determined from the address.
* @param address The IP address.
* @param prefixLength The prefix length. Must be &gt;= 0 and &lt;= (32 or 128) (IPv4 or IPv6).
* @hide
*/
@SystemApi
public LinkAddress(@NonNull InetAddress address,
@IntRange(from = 0, to = 128) int prefixLength) {
this(address, prefixLength, 0, 0);
this.scope = scopeForUnicastAddress(address);
}
/**
* Constructs a new {@code LinkAddress} from an {@code InterfaceAddress}.
* The flags are set to zero and the scope is determined from the address.
* @param interfaceAddress The interface address.
* @hide
*/
public LinkAddress(@NonNull InterfaceAddress interfaceAddress) {
this(interfaceAddress.getAddress(),
interfaceAddress.getNetworkPrefixLength());
}
/**
* Constructs a new {@code LinkAddress} from a string such as "192.0.2.5/24" or
* "2001:db8::1/64". The flags are set to zero and the scope is determined from the address.
* @param address The string to parse.
* @hide
*/
@SystemApi
public LinkAddress(@NonNull String address) {
this(address, 0, 0);
this.scope = scopeForUnicastAddress(this.address);
}
/**
* Constructs a new {@code LinkAddress} from a string such as "192.0.2.5/24" or
* "2001:db8::1/64", with the specified flags and scope.
* @param address The string to parse.
* @param flags The address flags.
* @param scope The address scope.
* @hide
*/
@SystemApi
public LinkAddress(@NonNull String address, int flags, int scope) {
// This may throw an IllegalArgumentException; catching it is the caller's responsibility.
// TODO: consider rejecting mapped IPv4 addresses such as "::ffff:192.0.2.5/24".
Pair<InetAddress, Integer> ipAndMask = NetworkUtils.parseIpAndMask(address);
init(ipAndMask.first, ipAndMask.second, flags, scope, LIFETIME_UNKNOWN, LIFETIME_UNKNOWN);
}
/**
* Returns a string representation of this address, such as "192.0.2.1/24" or "2001:db8::1/64".
* The string representation does not contain the flags and scope, just the address and prefix
* length.
*/
@Override
public String toString() {
return address.getHostAddress() + "/" + prefixLength;
}
/**
* Compares this {@code LinkAddress} instance against {@code obj}. Two addresses are equal if
* their address, prefix length, flags and scope are equal. Thus, for example, two addresses
* that have the same address and prefix length are not equal if one of them is deprecated and
* the other is not.
*
* @param obj the object to be tested for equality.
* @return {@code true} if both objects are equal, {@code false} otherwise.
*/
@Override
public boolean equals(Object obj) {
if (!(obj instanceof LinkAddress)) {
return false;
}
LinkAddress linkAddress = (LinkAddress) obj;
return this.address.equals(linkAddress.address)
&& this.prefixLength == linkAddress.prefixLength
&& this.flags == linkAddress.flags
&& this.scope == linkAddress.scope
&& this.deprecationTime == linkAddress.deprecationTime
&& this.expirationTime == linkAddress.expirationTime;
}
/**
* Returns a hashcode for this address.
*/
@Override
public int hashCode() {
return Objects.hash(address, prefixLength, flags, scope, deprecationTime, expirationTime);
}
/**
* Determines whether this {@code LinkAddress} and the provided {@code LinkAddress}
* represent the same address. Two {@code LinkAddresses} represent the same address
* if they have the same IP address and prefix length, even if their properties are
* different.
*
* @param other the {@code LinkAddress} to compare to.
* @return {@code true} if both objects have the same address and prefix length, {@code false}
* otherwise.
* @hide
*/
@SystemApi
public boolean isSameAddressAs(@Nullable LinkAddress other) {
if (other == null) {
return false;
}
return address.equals(other.address) && prefixLength == other.prefixLength;
}
/**
* Returns the {@link InetAddress} of this {@code LinkAddress}.
*/
public InetAddress getAddress() {
return address;
}
/**
* Returns the prefix length of this {@code LinkAddress}.
*/
@IntRange(from = 0, to = 128)
public int getPrefixLength() {
return prefixLength;
}
/**
* Returns the prefix length of this {@code LinkAddress}.
* TODO: Delete all callers and remove in favour of getPrefixLength().
* @hide
*/
@UnsupportedAppUsage
@IntRange(from = 0, to = 128)
public int getNetworkPrefixLength() {
return getPrefixLength();
}
/**
* Returns the flags of this {@code LinkAddress}.
*/
public int getFlags() {
int flags = this.flags;
if (deprecationTime != LIFETIME_UNKNOWN) {
if (SystemClock.elapsedRealtime() >= deprecationTime) {
flags |= IFA_F_DEPRECATED;
} else {
// If deprecation time is in the future, or permanent.
flags &= ~IFA_F_DEPRECATED;
}
}
if (expirationTime == LIFETIME_PERMANENT) {
flags |= IFA_F_PERMANENT;
} else if (expirationTime != LIFETIME_UNKNOWN) {
// If we know this address expired or will expire in the future, then this address
// should not be permanent.
flags &= ~IFA_F_PERMANENT;
}
// Do no touch the original flags. Return the adjusted flags here.
return flags;
}
/**
* Returns the scope of this {@code LinkAddress}.
*/
public int getScope() {
return scope;
}
/**
* Get the deprecation time, as reported by {@link SystemClock#elapsedRealtime}, when this
* {@link LinkAddress} will be or was deprecated. At the time existing connections can still use
* this address until it expires, but new connections should use the new address.
*
* @return The deprecation time in milliseconds. {@link #LIFETIME_UNKNOWN} indicates this
* information is not available. {@link #LIFETIME_PERMANENT} indicates this {@link LinkAddress}
* will never be deprecated.
*
* @hide
*/
@SystemApi
public long getDeprecationTime() {
return deprecationTime;
}
/**
* Get the expiration time, as reported by {@link SystemClock#elapsedRealtime}, when this
* {@link LinkAddress} will expire and be removed from the interface.
*
* @return The expiration time in milliseconds. {@link #LIFETIME_UNKNOWN} indicates this
* information is not available. {@link #LIFETIME_PERMANENT} indicates this {@link LinkAddress}
* will never expire.
*
* @hide
*/
@SystemApi
public long getExpirationTime() {
return expirationTime;
}
/**
* Returns true if this {@code LinkAddress} is global scope and preferred (i.e., not currently
* deprecated).
*
* @hide
*/
@SystemApi
public boolean isGlobalPreferred() {
/**
* Note that addresses flagged as IFA_F_OPTIMISTIC are
* simultaneously flagged as IFA_F_TENTATIVE (when the tentative
* state has cleared either DAD has succeeded or failed, and both
* flags are cleared regardless).
*/
int flags = getFlags();
return (scope == RT_SCOPE_UNIVERSE
&& !isIpv6ULA()
&& (flags & (IFA_F_DADFAILED | IFA_F_DEPRECATED)) == 0L
&& ((flags & IFA_F_TENTATIVE) == 0L || (flags & IFA_F_OPTIMISTIC) != 0L));
}
/**
* Implement the Parcelable interface.
*/
public int describeContents() {
return 0;
}
/**
* Implement the Parcelable interface.
*/
public void writeToParcel(Parcel dest, int flags) {
dest.writeByteArray(address.getAddress());
dest.writeInt(prefixLength);
dest.writeInt(this.flags);
dest.writeInt(scope);
dest.writeLong(deprecationTime);
dest.writeLong(expirationTime);
}
/**
* Implement the Parcelable interface.
*/
public static final @android.annotation.NonNull Creator<LinkAddress> CREATOR =
new Creator<LinkAddress>() {
public LinkAddress createFromParcel(Parcel in) {
InetAddress address = null;
try {
address = InetAddress.getByAddress(in.createByteArray());
} catch (UnknownHostException e) {
// Nothing we can do here. When we call the constructor, we'll throw an
// IllegalArgumentException, because a LinkAddress can't have a null
// InetAddress.
}
int prefixLength = in.readInt();
int flags = in.readInt();
int scope = in.readInt();
long deprecationTime = in.readLong();
long expirationTime = in.readLong();
return new LinkAddress(address, prefixLength, flags, scope, deprecationTime,
expirationTime);
}
public LinkAddress[] newArray(int size) {
return new LinkAddress[size];
}
};
}