Profile: Parse config file to a string per attribute

This parser should be able to handle any valid WireGuard or wg-quick configuration file. It separates the file into a single interface object and a peer object for each peer. All "[Interface]" sections in the file are combined into the one object. For now, later lines in a block with the same key overwrite earlier lines. This is only relevant for attributes that are lists, such as Address and AllowedIPs, where additional lines may be expected to append to the list. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2017-07-29 17:30:33 -05:00
parent 0494dd1404
commit 748d780a47
4 changed files with 274 additions and 26 deletions
@@ -0,0 +1,99 @@
+package com.wireguard.config;
+
+import android.databinding.BaseObservable;
+import android.databinding.Bindable;
+import android.databinding.Observable;
+
+import com.wireguard.android.BR;
+
+/**
+ * Represents the configuration for a WireGuard interface (an [Interface] block).
+ */
+
+public class Interface extends BaseObservable implements Observable {
+    private String address;
+    private String dns;
+    private String listenPort;
+    private String mtu;
+    private String privateKey;
+
+    @Bindable
+    public String getAddress() {
+        return address;
+    }
+
+    @Bindable
+    public String getDns() {
+        return dns;
+    }
+
+    @Bindable
+    public String getListenPort() {
+        return listenPort;
+    }
+
+    @Bindable
+    public String getMtu() {
+        return mtu;
+    }
+
+    @Bindable
+    public String getPrivateKey() {
+        return privateKey;
+    }
+
+    public void parseFrom(String line) {
+        final Attribute key = Attribute.match(line);
+        if (key == Attribute.ADDRESS)
+            address = key.parseFrom(line);
+        else if (key == Attribute.DNS)
+            dns = key.parseFrom(line);
+        else if (key == Attribute.LISTEN_PORT)
+            listenPort = key.parseFrom(line);
+        else if (key == Attribute.MTU)
+            mtu = key.parseFrom(line);
+        else if (key == Attribute.PRIVATE_KEY)
+            privateKey = key.parseFrom(line);
+    }
+
+    public void setAddress(String address) {
+        this.address = address;
+        notifyPropertyChanged(BR.address);
+    }
+
+    public void setDns(String dns) {
+        this.dns = dns;
+        notifyPropertyChanged(BR.dns);
+    }
+
+    public void setListenPort(String listenPort) {
+        this.listenPort = listenPort;
+        notifyPropertyChanged(BR.listenPort);
+    }
+
+    public void setMtu(String mtu) {
+        this.mtu = mtu;
+        notifyPropertyChanged(BR.mtu);
+    }
+
+    public void setPrivateKey(String privateKey) {
+        this.privateKey = privateKey;
+        notifyPropertyChanged(BR.privateKey);
+    }
+
+    @Override
+    public String toString() {
+        final StringBuilder sb = new StringBuilder().append("[Interface]\n");
+        if (address != null)
+            sb.append(Attribute.ADDRESS.composeWith(address));
+        if (dns != null)
+            sb.append(Attribute.DNS.composeWith(dns));
+        if (listenPort != null)
+            sb.append(Attribute.LISTEN_PORT.composeWith(listenPort));
+        if (mtu != null)
+            sb.append(Attribute.MTU.composeWith(mtu));
+        if (privateKey != null)
+            sb.append(Attribute.PRIVATE_KEY.composeWith(privateKey));
+        return sb.toString();
+    }
+}