diff options
Diffstat (limited to 'app/src/main/java/com/wireguard/config/Peer.java')
| -rw-r--r-- | app/src/main/java/com/wireguard/config/Peer.java | 306 |
1 files changed, 0 insertions, 306 deletions
diff --git a/app/src/main/java/com/wireguard/config/Peer.java b/app/src/main/java/com/wireguard/config/Peer.java deleted file mode 100644 index 37fcfa69..00000000 --- a/app/src/main/java/com/wireguard/config/Peer.java +++ /dev/null @@ -1,306 +0,0 @@ -/* - * Copyright © 2017-2019 WireGuard LLC. All Rights Reserved. - * SPDX-License-Identifier: Apache-2.0 - */ - -package com.wireguard.config; - -import androidx.annotation.Nullable; - -import com.wireguard.config.BadConfigException.Location; -import com.wireguard.config.BadConfigException.Reason; -import com.wireguard.config.BadConfigException.Section; -import com.wireguard.crypto.Key; -import com.wireguard.crypto.KeyFormatException; - -import java.util.Collection; -import java.util.Collections; -import java.util.LinkedHashSet; -import java.util.Locale; -import java.util.Objects; -import java.util.Set; - -import java9.util.Optional; - -/** - * Represents the configuration for a WireGuard peer (a [Peer] block). Peers must have a public key, - * and may optionally have several other attributes. - * <p> - * Instances of this class are immutable. - */ -public final class Peer { - private final Set<InetNetwork> allowedIps; - private final Optional<InetEndpoint> endpoint; - private final Optional<Integer> persistentKeepalive; - private final Optional<Key> preSharedKey; - private final Key publicKey; - - private Peer(final Builder builder) { - // Defensively copy to ensure immutability even if the Builder is reused. - allowedIps = Collections.unmodifiableSet(new LinkedHashSet<>(builder.allowedIps)); - endpoint = builder.endpoint; - persistentKeepalive = builder.persistentKeepalive; - preSharedKey = builder.preSharedKey; - publicKey = Objects.requireNonNull(builder.publicKey, "Peers must have a public key"); - } - - /** - * Parses an series of "KEY = VALUE" lines into a {@code Peer}. Throws {@link ParseException} if - * the input is not well-formed or contains unknown attributes. - * - * @param lines an iterable sequence of lines, containing at least a public key attribute - * @return a {@code Peer} with all of its attributes set from {@code lines} - */ - public static Peer parse(final Iterable<? extends CharSequence> lines) - throws BadConfigException { - final Builder builder = new Builder(); - for (final CharSequence line : lines) { - final Attribute attribute = Attribute.parse(line).orElseThrow(() -> - new BadConfigException(Section.PEER, Location.TOP_LEVEL, - Reason.SYNTAX_ERROR, line)); - switch (attribute.getKey().toLowerCase(Locale.ENGLISH)) { - case "allowedips": - builder.parseAllowedIPs(attribute.getValue()); - break; - case "endpoint": - builder.parseEndpoint(attribute.getValue()); - break; - case "persistentkeepalive": - builder.parsePersistentKeepalive(attribute.getValue()); - break; - case "presharedkey": - builder.parsePreSharedKey(attribute.getValue()); - break; - case "publickey": - builder.parsePublicKey(attribute.getValue()); - break; - default: - throw new BadConfigException(Section.PEER, Location.TOP_LEVEL, - Reason.UNKNOWN_ATTRIBUTE, attribute.getKey()); - } - } - return builder.build(); - } - - @Override - public boolean equals(final Object obj) { - if (!(obj instanceof Peer)) - return false; - final Peer other = (Peer) obj; - return allowedIps.equals(other.allowedIps) - && endpoint.equals(other.endpoint) - && persistentKeepalive.equals(other.persistentKeepalive) - && preSharedKey.equals(other.preSharedKey) - && publicKey.equals(other.publicKey); - } - - /** - * Returns the peer's set of allowed IPs. - * - * @return the set of allowed IPs - */ - public Set<InetNetwork> getAllowedIps() { - // The collection is already immutable. - return allowedIps; - } - - /** - * Returns the peer's endpoint. - * - * @return the endpoint, or {@code Optional.empty()} if none is configured - */ - public Optional<InetEndpoint> getEndpoint() { - return endpoint; - } - - /** - * Returns the peer's persistent keepalive. - * - * @return the persistent keepalive, or {@code Optional.empty()} if none is configured - */ - public Optional<Integer> getPersistentKeepalive() { - return persistentKeepalive; - } - - /** - * Returns the peer's pre-shared key. - * - * @return the pre-shared key, or {@code Optional.empty()} if none is configured - */ - public Optional<Key> getPreSharedKey() { - return preSharedKey; - } - - /** - * Returns the peer's public key. - * - * @return the public key - */ - public Key getPublicKey() { - return publicKey; - } - - @Override - public int hashCode() { - int hash = 1; - hash = 31 * hash + allowedIps.hashCode(); - hash = 31 * hash + endpoint.hashCode(); - hash = 31 * hash + persistentKeepalive.hashCode(); - hash = 31 * hash + preSharedKey.hashCode(); - hash = 31 * hash + publicKey.hashCode(); - return hash; - } - - /** - * Converts the {@code Peer} into a string suitable for debugging purposes. The {@code Peer} is - * identified by its public key and (if known) its endpoint. - * - * @return a concise single-line identifier for the {@code Peer} - */ - @Override - public String toString() { - final StringBuilder sb = new StringBuilder("(Peer "); - sb.append(publicKey.toBase64()); - endpoint.ifPresent(ep -> sb.append(" @").append(ep)); - sb.append(')'); - return sb.toString(); - } - - /** - * Converts the {@code Peer} into a string suitable for inclusion in a {@code wg-quick} - * configuration file. - * - * @return the {@code Peer} represented as a series of "Key = Value" lines - */ - public String toWgQuickString() { - final StringBuilder sb = new StringBuilder(); - if (!allowedIps.isEmpty()) - sb.append("AllowedIPs = ").append(Attribute.join(allowedIps)).append('\n'); - endpoint.ifPresent(ep -> sb.append("Endpoint = ").append(ep).append('\n')); - persistentKeepalive.ifPresent(pk -> sb.append("PersistentKeepalive = ").append(pk).append('\n')); - preSharedKey.ifPresent(psk -> sb.append("PreSharedKey = ").append(psk.toBase64()).append('\n')); - sb.append("PublicKey = ").append(publicKey.toBase64()).append('\n'); - return sb.toString(); - } - - /** - * Serializes the {@code Peer} for use with the WireGuard cross-platform userspace API. Note - * that not all attributes are included in this representation. - * - * @return the {@code Peer} represented as a series of "key=value" lines - */ - public String toWgUserspaceString() { - final StringBuilder sb = new StringBuilder(); - // The order here is important: public_key signifies the beginning of a new peer. - sb.append("public_key=").append(publicKey.toHex()).append('\n'); - for (final InetNetwork allowedIp : allowedIps) - sb.append("allowed_ip=").append(allowedIp).append('\n'); - endpoint.flatMap(InetEndpoint::getResolved).ifPresent(ep -> sb.append("endpoint=").append(ep).append('\n')); - persistentKeepalive.ifPresent(pk -> sb.append("persistent_keepalive_interval=").append(pk).append('\n')); - preSharedKey.ifPresent(psk -> sb.append("preshared_key=").append(psk.toHex()).append('\n')); - return sb.toString(); - } - - @SuppressWarnings("UnusedReturnValue") - public static final class Builder { - // See wg(8) - private static final int MAX_PERSISTENT_KEEPALIVE = 65535; - - // Defaults to an empty set. - private final Set<InetNetwork> allowedIps = new LinkedHashSet<>(); - // Defaults to not present. - private Optional<InetEndpoint> endpoint = Optional.empty(); - // Defaults to not present. - private Optional<Integer> persistentKeepalive = Optional.empty(); - // Defaults to not present. - private Optional<Key> preSharedKey = Optional.empty(); - // No default; must be provided before building. - @Nullable private Key publicKey; - - public Builder addAllowedIp(final InetNetwork allowedIp) { - allowedIps.add(allowedIp); - return this; - } - - public Builder addAllowedIps(final Collection<InetNetwork> allowedIps) { - this.allowedIps.addAll(allowedIps); - return this; - } - - public Peer build() throws BadConfigException { - if (publicKey == null) - throw new BadConfigException(Section.PEER, Location.PUBLIC_KEY, - Reason.MISSING_ATTRIBUTE, null); - return new Peer(this); - } - - public Builder parseAllowedIPs(final CharSequence allowedIps) throws BadConfigException { - try { - for (final String allowedIp : Attribute.split(allowedIps)) - addAllowedIp(InetNetwork.parse(allowedIp)); - return this; - } catch (final ParseException e) { - throw new BadConfigException(Section.PEER, Location.ALLOWED_IPS, e); - } - } - - public Builder parseEndpoint(final String endpoint) throws BadConfigException { - try { - return setEndpoint(InetEndpoint.parse(endpoint)); - } catch (final ParseException e) { - throw new BadConfigException(Section.PEER, Location.ENDPOINT, e); - } - } - - public Builder parsePersistentKeepalive(final String persistentKeepalive) - throws BadConfigException { - try { - return setPersistentKeepalive(Integer.parseInt(persistentKeepalive)); - } catch (final NumberFormatException e) { - throw new BadConfigException(Section.PEER, Location.PERSISTENT_KEEPALIVE, - persistentKeepalive, e); - } - } - - public Builder parsePreSharedKey(final String preSharedKey) throws BadConfigException { - try { - return setPreSharedKey(Key.fromBase64(preSharedKey)); - } catch (final KeyFormatException e) { - throw new BadConfigException(Section.PEER, Location.PRE_SHARED_KEY, e); - } - } - - public Builder parsePublicKey(final String publicKey) throws BadConfigException { - try { - return setPublicKey(Key.fromBase64(publicKey)); - } catch (final KeyFormatException e) { - throw new BadConfigException(Section.PEER, Location.PUBLIC_KEY, e); - } - } - - public Builder setEndpoint(final InetEndpoint endpoint) { - this.endpoint = Optional.of(endpoint); - return this; - } - - public Builder setPersistentKeepalive(final int persistentKeepalive) - throws BadConfigException { - if (persistentKeepalive < 0 || persistentKeepalive > MAX_PERSISTENT_KEEPALIVE) - throw new BadConfigException(Section.PEER, Location.PERSISTENT_KEEPALIVE, - Reason.INVALID_VALUE, String.valueOf(persistentKeepalive)); - this.persistentKeepalive = persistentKeepalive == 0 ? - Optional.empty() : Optional.of(persistentKeepalive); - return this; - } - - public Builder setPreSharedKey(final Key preSharedKey) { - this.preSharedKey = Optional.of(preSharedKey); - return this; - } - - public Builder setPublicKey(final Key publicKey) { - this.publicKey = publicKey; - return this; - } - } -} |