Add getConnectionInfo API to service manager

This gets connection info from the vintf manifest for AIDL hals that
report it.
The hals will have new "ip" and "port" fields in their entries if they
are serving the interface from a remote device at that ip address/port
combo.

Test: tested the IServiceManager API with an internal POC using a remote HAL
Test: atest binderStabilityTest
Bug: 198207801
Change-Id: I334bebe62afb40e9710b57257f95e37a9c2b8226

1 files changed, 16 insertions, 0 deletions

diff --git a/libs/binder/IServiceManager.cpp b/libs/binder/IServiceManager.cpp
index 6e318ea478..aff9e0d48d 100644
--- a/libs/binder/IServiceManager.cpp
+++ b/libs/binder/IServiceManager.cpp
@@ -78,6 +78,7 @@ public:
     bool isDeclared(const String16& name) override;
     Vector<String16> getDeclaredInstances(const String16& interface) override;
     std::optional<String16> updatableViaApex(const String16& name) override;
+    std::optional<IServiceManager::ConnectionInfo> getConnectionInfo(const String16& name) override;
 
     // for legacy ABI
     const String16& getInterfaceDescriptor() const override {
@@ -426,6 +427,21 @@ std::optional<String16> ServiceManagerShim::updatableViaApex(const String16& nam
     return declared ? std::optional<String16>(String16(declared.value().c_str())) : std::nullopt;
 }
 
+std::optional<IServiceManager::ConnectionInfo> ServiceManagerShim::getConnectionInfo(
+        const String16& name) {
+    std::optional<os::ConnectionInfo> connectionInfo;
+    if (Status status =
+                mTheRealServiceManager->getConnectionInfo(String8(name).c_str(), &connectionInfo);
+        !status.isOk()) {
+        ALOGW("Failed to get ConnectionInfo for %s: %s", String8(name).c_str(),
+              status.toString8().c_str());
+    }
+    return connectionInfo.has_value()
+            ? std::make_optional<IServiceManager::ConnectionInfo>(
+                      {connectionInfo->ipAddress, static_cast<unsigned int>(connectionInfo->port)})
+            : std::nullopt;
+}
+
 #ifndef __ANDROID__
 // ServiceManagerShim for host. Implements the old libbinder android::IServiceManager API.
 // The internal implementation of the AIDL interface android::os::IServiceManager calls into