Do not log sensitive information.

When logging device descriptor, do not log the IP address and MAC
address.

Test: make, dumpsys media.audio_policy
Bug: 162299985
Change-Id: Ia255d733d9d638786d0f3b444c57e787c45ad8d7
diff --git a/media/libaudiofoundation/DeviceDescriptorBase.cpp b/media/libaudiofoundation/DeviceDescriptorBase.cpp
index 3dbe37d..e9b589d 100644
--- a/media/libaudiofoundation/DeviceDescriptorBase.cpp
+++ b/media/libaudiofoundation/DeviceDescriptorBase.cpp
@@ -22,6 +22,9 @@
 #include <media/DeviceDescriptorBase.h>
 #include <media/TypeConverter.h>
 
+#include <arpa/inet.h>
+#include <regex>
+
 namespace android {
 
 DeviceDescriptorBase::DeviceDescriptorBase(audio_devices_t type) :
@@ -34,6 +37,31 @@
 {
 }
 
+namespace {
+
+static const std::string SUPPRESSED = "SUPPRESSED";
+static const std::regex MAC_ADDRESS_REGEX("([0-9a-fA-F]{2}:){5}[0-9a-fA-F]{2}");
+
+bool isAddressSensitive(const std::string &address) {
+    if (std::regex_match(address, MAC_ADDRESS_REGEX)) {
+        return true;
+    }
+
+    sockaddr_storage ss4;
+    if (inet_pton(AF_INET, address.c_str(), &ss4) > 0) {
+        return true;
+    }
+
+    sockaddr_storage ss6;
+    if (inet_pton(AF_INET6, address.c_str(), &ss6) > 0) {
+        return true;
+    }
+
+    return false;
+}
+
+} // namespace
+
 DeviceDescriptorBase::DeviceDescriptorBase(const AudioDeviceTypeAddr &deviceTypeAddr) :
         AudioPort("", AUDIO_PORT_TYPE_DEVICE,
                   audio_is_output_device(deviceTypeAddr.mType) ? AUDIO_PORT_ROLE_SINK :
@@ -43,6 +71,12 @@
     if (mDeviceTypeAddr.mAddress.empty() && audio_is_remote_submix_device(mDeviceTypeAddr.mType)) {
         mDeviceTypeAddr.mAddress = "0";
     }
+    mIsAddressSensitive = isAddressSensitive(mDeviceTypeAddr.mAddress);
+}
+
+void DeviceDescriptorBase::setAddress(const std::string &address) {
+    mDeviceTypeAddr.mAddress = address;
+    mIsAddressSensitive = isAddressSensitive(address);
 }
 
 void DeviceDescriptorBase::toAudioPortConfig(struct audio_port_config *dstConfig,
@@ -130,10 +164,15 @@
     AudioPort::dump(dst, spaces, verbose);
 }
 
-std::string DeviceDescriptorBase::toString() const
+std::string DeviceDescriptorBase::toString(bool includeSensitiveInfo) const
 {
     std::stringstream sstream;
-    sstream << "type:0x" << std::hex << type() << ",@:" << mDeviceTypeAddr.mAddress;
+    sstream << "type:0x" << std::hex << type();
+    // IP and MAC address are sensitive information. The sensitive information will be suppressed
+    // is `includeSensitiveInfo` is false.
+    sstream << ",@:"
+            << (!includeSensitiveInfo && mIsAddressSensitive ? SUPPRESSED
+                                                             : mDeviceTypeAddr.mAddress);
     return sstream.str();
 }