1 files changed, 69 insertions, 0 deletions
diff --git a/otafault/config.cpp b/otafault/config.cpp
new file mode 100644
index 000000000..b4567392d
--- /dev/null
+++ b/otafault/config.cpp
@@ -0,0 +1,69 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <map>
+#include <string>
+
+#include <stdio.h>
+#include <unistd.h>
+
+#include <android-base/stringprintf.h>
+
+#include "minzip/Zip.h"
+#include "config.h"
+#include "ota_io.h"
+
+#define OTAIO_MAX_FNAME_SIZE 128
+
+static ZipArchive* archive;
+static std::map<std::string, bool> should_inject_cache;
+
+static std::string get_type_path(const char* io_type) {
+    return android::base::StringPrintf("%s/%s", OTAIO_BASE_DIR, io_type);
+}
+
+void ota_io_init(ZipArchive* za) {
+    archive = za;
+    ota_set_fault_files();
+}
+
+bool should_fault_inject(const char* io_type) {
+    // archive will be NULL if we used an entry point other
+    // than updater/updater.cpp:main
+    if (archive == NULL) {
+        return false;
+    }
+    const std::string type_path = get_type_path(io_type);
+    if (should_inject_cache.find(type_path) != should_inject_cache.end()) {
+        return should_inject_cache[type_path];
+    }
+    const ZipEntry* entry = mzFindZipEntry(archive, type_path.c_str());
+    should_inject_cache[type_path] = entry != nullptr;
+    return entry != NULL;
+}
+
+bool should_hit_cache() {
+    return should_fault_inject(OTAIO_CACHE);
+}
+
+std::string fault_fname(const char* io_type) {
+    std::string type_path = get_type_path(io_type);
+    std::string fname;
+    fname.resize(OTAIO_MAX_FNAME_SIZE);
+    const ZipEntry* entry = mzFindZipEntry(archive, type_path.c_str());
+    mzReadZipEntry(archive, entry, &fname[0], OTAIO_MAX_FNAME_SIZE);
+    return fname;
+}