Initial reintegration of legacy update process that used update-script
diff --git a/legacy.c b/legacy.c
new file mode 100644
index 0000000..b50ba3e
--- /dev/null
+++ b/legacy.c
@@ -0,0 +1,98 @@
+/*
+ * Copyright (C) 2007 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 <ctype.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <limits.h>
+#include <sys/stat.h>
+#include <sys/wait.h>
+#include <unistd.h>
+
+#include "common.h"
+#include "install.h"
+#include "mincrypt/rsa.h"
+#include "minui/minui.h"
+#include "minzip/SysUtil.h"
+#include "minzip/Zip.h"
+#include "mtdutils/mounts.h"
+#include "mtdutils/mtdutils.h"
+#include "roots.h"
+#include "verifier.h"
+#include "firmware.h"
+
+#include "amend/amend.h"
+#include "common.h"
+#include "install.h"
+#include "mincrypt/rsa.h"
+#include "minui/minui.h"
+#include "minzip/SysUtil.h"
+#include "minzip/Zip.h"
+#include "mtdutils/mounts.h"
+#include "mtdutils/mtdutils.h"
+#include "roots.h"
+#include "verifier.h"
+
+int
+handle_update_script(ZipArchive *zip, const ZipEntry *update_script_entry)
+{
+ /* Read the entire script into a buffer.
+ */
+ int script_len;
+ char* script_data;
+ if (read_data(zip, update_script_entry, &script_data, &script_len) < 0) {
+ LOGE("Can't read update script\n");
+ return INSTALL_ERROR;
+ }
+
+ /* Parse the script. Note that the script and parse tree are never freed.
+ */
+ const AmCommandList *commands = parseAmendScript(script_data, script_len);
+ if (commands == NULL) {
+ LOGE("Syntax error in update script\n");
+ return INSTALL_ERROR;
+ } else {
+ UnterminatedString name = mzGetZipEntryFileName(update_script_entry);
+ LOGI("Parsed %.*s\n", name.len, name.str);
+ }
+
+ /* Execute the script.
+ */
+ int ret = execCommandList((ExecContext *)1, commands);
+ if (ret != 0) {
+ int num = ret;
+ char *line, *next = script_data;
+ while (next != NULL && ret-- > 0) {
+ line = next;
+ next = memchr(line, '\n', script_data + script_len - line);
+ if (next != NULL) *next++ = '\0';
+ }
+ LOGE("Failure at line %d:\n%s\n", num, next ? line : "(not found)");
+ return INSTALL_ERROR;
+ }
+
+ ui_print("Installation complete.\n");
+ return INSTALL_SUCCESS;
+}
+
+#define ASSUMED_UPDATE_SCRIPT_NAME "META-INF/com/google/android/update-script"
+
+const ZipEntry *
+find_update_script(ZipArchive *zip)
+{
+//TODO: Get the location of this script from the MANIFEST.MF file
+ return mzFindZipEntry(zip, ASSUMED_UPDATE_SCRIPT_NAME);
+}