125 lines
3.5 KiB
C
125 lines
3.5 KiB
C
/*
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* Copyright (C) 2007 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <ctype.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <limits.h>
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#include <sys/stat.h>
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#include <sys/wait.h>
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#include <unistd.h>
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#include "common.h"
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#include "install.h"
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#include "mincrypt/rsa.h"
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#include "minui/minui.h"
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#include "minzip/SysUtil.h"
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#include "minzip/Zip.h"
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#include "mtdutils/mounts.h"
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#include "mtdutils/mtdutils.h"
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#include "roots.h"
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#include "verifier.h"
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#include "firmware.h"
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#include "amend/amend.h"
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#include "common.h"
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#include "install.h"
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#include "mincrypt/rsa.h"
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#include "minui/minui.h"
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#include "minzip/SysUtil.h"
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#include "minzip/Zip.h"
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#include "mtdutils/mounts.h"
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#include "mtdutils/mtdutils.h"
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#include "roots.h"
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#include "verifier.h"
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static int read_data(ZipArchive *zip, const ZipEntry *entry,
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char** ppData, int* pLength) {
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int len = (int)mzGetZipEntryUncompLen(entry);
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if (len <= 0) {
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LOGE("Bad data length %d\n", len);
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return -1;
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}
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char *data = malloc(len + 1);
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if (data == NULL) {
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LOGE("Can't allocate %d bytes for data\n", len + 1);
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return -2;
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}
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bool ok = mzReadZipEntry(zip, entry, data, len);
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if (!ok) {
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LOGE("Error while reading data\n");
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free(data);
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return -3;
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}
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data[len] = '\0'; // not necessary, but just to be safe
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*ppData = data;
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if (pLength) {
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*pLength = len;
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}
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return 0;
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}
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int
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handle_update_script(ZipArchive *zip, const ZipEntry *update_script_entry)
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{
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/* Read the entire script into a buffer.
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*/
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int script_len;
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char* script_data;
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if (read_data(zip, update_script_entry, &script_data, &script_len) < 0) {
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LOGE("Can't read update script\n");
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return INSTALL_UPDATE_SCRIPT_MISSING;
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}
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/* Parse the script. Note that the script and parse tree are never freed.
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*/
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const AmCommandList *commands = parseAmendScript(script_data, script_len);
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if (commands == NULL) {
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LOGE("Syntax error in update script\n");
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return INSTALL_ERROR;
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} else {
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UnterminatedString name = mzGetZipEntryFileName(update_script_entry);
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LOGI("Parsed %.*s\n", name.len, name.str);
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}
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/* Execute the script.
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*/
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int ret = execCommandList((ExecContext *)1, commands);
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if (ret != 0) {
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int num = ret;
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char *line, *next = script_data;
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while (next != NULL && ret-- > 0) {
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line = next;
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next = memchr(line, '\n', script_data + script_len - line);
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if (next != NULL) *next++ = '\0';
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}
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LOGE("Failure at line %d:\n%s\n", num, next ? line : "(not found)");
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return INSTALL_ERROR;
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}
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ui_print("Installation complete.\n");
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return INSTALL_SUCCESS;
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}
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#define ASSUMED_UPDATE_SCRIPT_NAME "META-INF/com/google/android/update-script"
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const ZipEntry *
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find_update_script(ZipArchive *zip)
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{
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//TODO: Get the location of this script from the MANIFEST.MF file
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return mzFindZipEntry(zip, ASSUMED_UPDATE_SCRIPT_NAME);
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}
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