Revert "Cache status list HTTP response"

Android does not support okhttp3

Test: build

This reverts commit 9b023ce2df3826aceca31c6b799d3c81e9ee7b71.

Change-Id: I261ec2b4842cd1d8cd4bb94647ef7fa59c94d98f

4 files changed, 5 insertions, 22 deletions

diff --git a/.gitignore b/.gitignore
index 7adc511..28038a7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -10,8 +10,6 @@ bin/
 build/
 gen/
 out/
-# Runtime HTTP response cache
-httpcache/
 # Local configuration file (sdk path, etc)
 local.properties
 # Eclipse project files
diff --git a/server/build.gradle b/server/build.gradle
index 63c8a50..fff1b6a 100644
--- a/server/build.gradle
+++ b/server/build.gradle
@@ -31,7 +31,6 @@ dependencies {
     compile 'com.google.errorprone:error_prone_annotations:2.3.1'
     // Gson used for decoding certificate status list
     compile 'com.google.code.gson:gson:2.8.5'
-    compile 'com.squareup.okhttp3:okhttp:4.10.0'
     // JUnit, Truth and Truth8 used for testing
     testCompile 'junit:junit:4.12'
     testCompile 'com.google.truth:truth:1.0'
diff --git a/server/src/main/java/com/google/android/attestation/BUILD b/server/src/main/java/com/google/android/attestation/BUILD
index 541c87b..f1023c8 100644
--- a/server/src/main/java/com/google/android/attestation/BUILD
+++ b/server/src/main/java/com/google/android/attestation/BUILD
@@ -15,7 +15,6 @@ java_library(
         "@maven//:com_google_code_gson_gson",
         "@maven//:com_google_errorprone_error_prone_annotations",
         "@maven//:com_google_guava_guava",
-        "@maven//:com_squareup_okhttp3_okhttp",
         "@maven//:org_bouncycastle_bcpkix_jdk15on",
         "@maven//:org_bouncycastle_bcprov_jdk15on",
     ],
diff --git a/server/src/main/java/com/google/android/attestation/CertificateRevocationStatus.java b/server/src/main/java/com/google/android/attestation/CertificateRevocationStatus.java
index 2fe39ae..d31b2d8 100644
--- a/server/src/main/java/com/google/android/attestation/CertificateRevocationStatus.java
+++ b/server/src/main/java/com/google/android/attestation/CertificateRevocationStatus.java
@@ -18,8 +18,7 @@ package com.google.android.attestation;
 import com.google.gson.Gson;
 import com.google.gson.JsonObject;
 import com.google.gson.JsonParser;
-
-import java.io.File;
+import java.io.ByteArrayInputStream;
 import java.io.FileReader;
 import java.io.IOException;
 import java.io.InputStreamReader;
@@ -27,11 +26,8 @@ import java.io.Reader;
 import java.math.BigInteger;
 import java.net.MalformedURLException;
 import java.net.URL;
+import java.nio.file.Files;
 import java.util.HashMap;
-import okhttp3.Cache;
-import okhttp3.OkHttpClient;
-import okhttp3.Request;
-import okhttp3.Response;
 
 
 /**
@@ -40,12 +36,6 @@ import okhttp3.Response;
 public class CertificateRevocationStatus {
 
   private static final String STATUS_URL = "https://android.googleapis.com/attestation/status";
-  private static final String CACHE_PATH = "httpcache";
-  private static final Cache CACHE = new Cache(new File(CACHE_PATH), 10 * 1024 * 1024);
-  private static final OkHttpClient CLIENT = new OkHttpClient.Builder()
-          .cache(CACHE)
-          .build();
-
   public final Status status;
   public final Reason reason;
   public final String comment;
@@ -104,13 +94,10 @@ public class CertificateRevocationStatus {
       throw new IllegalStateException(e);
     }
 
-    Request request = new Request.Builder()
-            .url(url)
-            .build();
+    InputStreamReader statusListReader = new InputStreamReader(url.openStream());
+
+    return decodeStatus(serialNumber, statusListReader);
 
-    try (Response response = CLIENT.newCall(request).execute()) {
-      return decodeStatus(serialNumber, response.body().charStream());
-    }
   }
 
   private static CertificateRevocationStatus decodeStatus(String serialNumber,