First prototype to validate phone numbers

src/main/java/io/kamax/mxisd/threepid/connector/phone/IPhoneConnector.java

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+/*
+ * mxisd - Matrix Identity Server Daemon
+ * Copyright (C) 2017 Maxime Dor
+ *
+ * https://max.kamax.io/
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package io.kamax.mxisd.threepid.connector.phone;
+
+import io.kamax.matrix.ThreePidMedium;
+import io.kamax.mxisd.threepid.connector.IThreePidConnector;
+
+public interface IPhoneConnector extends IThreePidConnector {
+
+    @Override
+    default String getMedium() {
+        return ThreePidMedium.PhoneNumber.getId();
+    }
+
+    void send(String recipient, String content);
+
+}

src/main/java/io/kamax/mxisd/threepid/connector/phone/PhoneSmsTwilioConnector.java

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+/*
+ * mxisd - Matrix Identity Server Daemon
+ * Copyright (C) 2017 Maxime Dor
+ *
+ * https://max.kamax.io/
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package io.kamax.mxisd.threepid.connector.phone;
+
+import com.twilio.Twilio;
+import com.twilio.rest.api.v2010.account.Message;
+import com.twilio.type.PhoneNumber;
+import io.kamax.mxisd.config.threepid.connector.PhoneTwilioConfig;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+
+@Component
+public class PhoneSmsTwilioConnector implements IPhoneConnector {
+
+    private Logger log = LoggerFactory.getLogger(PhoneSmsTwilioConnector.class);
+
+    private PhoneTwilioConfig cfg;
+
+    @Autowired
+    public PhoneSmsTwilioConnector(PhoneTwilioConfig cfg) {
+        this.cfg = cfg;
+
+        Twilio.init(cfg.getAccountSid(), cfg.getAuthToken());
+        log.info("Twilio API has been initiated");
+    }
+
+    @Override
+    public String getId() {
+        return "twilio";
+    }
+
+    @Override
+    public void send(String recipient, String content) {
+        recipient = "+" + recipient;
+        log.info("Sending SMS notification from {} to {} with {} characters", cfg.getNumber(), recipient, content.length());
+        Message.creator(new PhoneNumber("+" + recipient), new PhoneNumber(cfg.getNumber()), content).create();
+    }
+
+}