Added an SmsMessage class, and code for parsing a PDU to an SMS message.

sms_message.h

Index: sms_message.h
diff --git a/sms_message.h b/sms_message.h
new file mode 100644
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+++ b/sms_message.h
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+// Copyright (c) 2011 The Chromium OS Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CROMO_SMS_MESSAGE_H_
+#define CROMO_SMS_MESSAGE_H_
+
+#include <base/basictypes.h>
+#include <string>
+
+// Simple class that represents SMS messages and their
+// metadata.
+class SmsMessage {
+ public:
+  // Create an SMS message from a PDU (Protocol Description Unit)
+  // as documented in 3GPP 23.040. Text of the message is represented
+  // in the GSM 7 alphabet as documented in 3GPP 23.038,
+  static SmsMessage* CreateMessage(const uint8_t* pdu, size_t pdu_len);
+
+  std::string& smsc_address() { return smsc_address_; }
+  std::string& sender_address() { return sender_address_; }
+  std::string& timestamp() { return timestamp_; }
+  // Return the body of the SMS message as a UTF-8 encoded string
+  std::string& text() { return text_; }
+
+ private:
+  SmsMessage() {}       // disallow no-arg constructor invocation
+
+  SmsMessage(std::string& smsc_address,
+             std::string& sender_address,
+             std::string& timestamp,
+             std::string& text) :
+    smsc_address_(smsc_address),
+    sender_address_(sender_address),
+    timestamp_(timestamp),
+    text_(text) {}
+
+  std::string smsc_address_;
+  std::string sender_address_;
+  std::string timestamp_;
+  std::string text_;
+
+  DISALLOW_COPY_AND_ASSIGN(SmsMessage);
+};
+
+#endif // CROMO_SMS_MESSAGE_H_