Control fault injection with config files instead of build flags
Bug: 27724259
Change-Id: I65bdefed10b3fb85fcb9e1147eaf0687d7d438f4
diff --git a/otafault/config.cpp b/otafault/config.cpp
new file mode 100644
index 0000000..aa4b4d5
--- /dev/null
+++ b/otafault/config.cpp
@@ -0,0 +1,70 @@
+/*
+ * 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 "minzip/Zip.h"
+#include "config.h"
+#include "ota_io.h"
+
+#define OTAIO_MAX_FNAME_SIZE 128
+
+static ZipArchive* archive;
+static std::map<const char*, bool> should_inject_cache;
+
+static const char* get_type_path(const char* io_type) {
+ char* path = (char*)calloc(strlen(io_type) + strlen(OTAIO_BASE_DIR) + 2, sizeof(char));
+ sprintf(path, "%s/%s", OTAIO_BASE_DIR, io_type);
+ return path;
+}
+
+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;
+ }
+ if (should_inject_cache.find(io_type) != should_inject_cache.end()) {
+ return should_inject_cache[io_type];
+ }
+ const char* type_path = get_type_path(io_type);
+ const ZipEntry* entry = mzFindZipEntry(archive, type_path);
+ should_inject_cache[type_path] = entry != nullptr;
+ free((void*)type_path);
+ return entry != NULL;
+}
+
+bool should_hit_cache() {
+ return should_fault_inject(OTAIO_CACHE);
+}
+
+std::string fault_fname(const char* io_type) {
+ const char* type_path = get_type_path(io_type);
+ char* fname = (char*) calloc(OTAIO_MAX_FNAME_SIZE, sizeof(char));
+ const ZipEntry* entry = mzFindZipEntry(archive, type_path);
+ mzReadZipEntry(archive, entry, fname, OTAIO_MAX_FNAME_SIZE);
+ free((void*)type_path);
+ return std::string(fname);
+}