1189 lines
35 KiB
C
1189 lines
35 KiB
C
/*
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* Copyright (C) 2009 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 <stdarg.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/mount.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <time.h>
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#include "cutils/misc.h"
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#include "cutils/properties.h"
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#include "edify/expr.h"
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#include "mincrypt/sha.h"
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#include "minzip/DirUtil.h"
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#include "minelf/Retouch.h"
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#include "mtdutils/mounts.h"
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#include "mtdutils/mtdutils.h"
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#include "updater.h"
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#include "applypatch/applypatch.h"
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#ifdef USE_EXT4
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#include "make_ext4fs.h"
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#endif
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// mount(fs_type, partition_type, location, mount_point)
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//
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// fs_type="yaffs2" partition_type="MTD" location=partition
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// fs_type="ext4" partition_type="EMMC" location=device
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Value* MountFn(const char* name, State* state, int argc, Expr* argv[]) {
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char* result = NULL;
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if (argc != 4) {
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return ErrorAbort(state, "%s() expects 4 args, got %d", name, argc);
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}
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char* fs_type;
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char* partition_type;
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char* location;
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char* mount_point;
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if (ReadArgs(state, argv, 4, &fs_type, &partition_type,
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&location, &mount_point) < 0) {
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return NULL;
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}
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if (strlen(fs_type) == 0) {
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ErrorAbort(state, "fs_type argument to %s() can't be empty", name);
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goto done;
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}
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if (strlen(partition_type) == 0) {
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ErrorAbort(state, "partition_type argument to %s() can't be empty",
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name);
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goto done;
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}
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if (strlen(location) == 0) {
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ErrorAbort(state, "location argument to %s() can't be empty", name);
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goto done;
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}
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if (strlen(mount_point) == 0) {
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ErrorAbort(state, "mount_point argument to %s() can't be empty", name);
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goto done;
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}
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mkdir(mount_point, 0755);
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if (strcmp(partition_type, "MTD") == 0) {
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mtd_scan_partitions();
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const MtdPartition* mtd;
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mtd = mtd_find_partition_by_name(location);
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if (mtd == NULL) {
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fprintf(stderr, "%s: no mtd partition named \"%s\"",
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name, location);
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result = strdup("");
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goto done;
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}
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if (mtd_mount_partition(mtd, mount_point, fs_type, 0 /* rw */) != 0) {
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fprintf(stderr, "mtd mount of %s failed: %s\n",
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location, strerror(errno));
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result = strdup("");
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goto done;
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}
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result = mount_point;
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} else {
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if (mount(location, mount_point, fs_type,
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MS_NOATIME | MS_NODEV | MS_NODIRATIME, "") < 0) {
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fprintf(stderr, "%s: failed to mount %s at %s: %s\n",
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name, location, mount_point, strerror(errno));
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result = strdup("");
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} else {
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result = mount_point;
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}
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}
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done:
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free(fs_type);
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free(partition_type);
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free(location);
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if (result != mount_point) free(mount_point);
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return StringValue(result);
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}
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// is_mounted(mount_point)
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Value* IsMountedFn(const char* name, State* state, int argc, Expr* argv[]) {
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char* result = NULL;
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if (argc != 1) {
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return ErrorAbort(state, "%s() expects 1 arg, got %d", name, argc);
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}
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char* mount_point;
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if (ReadArgs(state, argv, 1, &mount_point) < 0) {
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return NULL;
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}
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if (strlen(mount_point) == 0) {
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ErrorAbort(state, "mount_point argument to unmount() can't be empty");
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goto done;
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}
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scan_mounted_volumes();
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const MountedVolume* vol = find_mounted_volume_by_mount_point(mount_point);
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if (vol == NULL) {
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result = strdup("");
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} else {
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result = mount_point;
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}
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done:
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if (result != mount_point) free(mount_point);
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return StringValue(result);
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}
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Value* UnmountFn(const char* name, State* state, int argc, Expr* argv[]) {
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char* result = NULL;
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if (argc != 1) {
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return ErrorAbort(state, "%s() expects 1 arg, got %d", name, argc);
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}
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char* mount_point;
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if (ReadArgs(state, argv, 1, &mount_point) < 0) {
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return NULL;
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}
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if (strlen(mount_point) == 0) {
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ErrorAbort(state, "mount_point argument to unmount() can't be empty");
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goto done;
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}
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scan_mounted_volumes();
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const MountedVolume* vol = find_mounted_volume_by_mount_point(mount_point);
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if (vol == NULL) {
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fprintf(stderr, "unmount of %s failed; no such volume\n", mount_point);
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result = strdup("");
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} else {
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unmount_mounted_volume(vol);
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result = mount_point;
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}
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done:
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if (result != mount_point) free(mount_point);
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return StringValue(result);
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}
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// format(fs_type, partition_type, location)
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//
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// fs_type="yaffs2" partition_type="MTD" location=partition
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// fs_type="ext4" partition_type="EMMC" location=device
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Value* FormatFn(const char* name, State* state, int argc, Expr* argv[]) {
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char* result = NULL;
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if (argc != 3) {
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return ErrorAbort(state, "%s() expects 3 args, got %d", name, argc);
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}
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char* fs_type;
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char* partition_type;
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char* location;
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if (ReadArgs(state, argv, 3, &fs_type, &partition_type, &location) < 0) {
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return NULL;
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}
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if (strlen(fs_type) == 0) {
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ErrorAbort(state, "fs_type argument to %s() can't be empty", name);
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goto done;
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}
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if (strlen(partition_type) == 0) {
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ErrorAbort(state, "partition_type argument to %s() can't be empty",
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name);
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goto done;
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}
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if (strlen(location) == 0) {
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ErrorAbort(state, "location argument to %s() can't be empty", name);
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goto done;
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}
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if (strcmp(partition_type, "MTD") == 0) {
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mtd_scan_partitions();
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const MtdPartition* mtd = mtd_find_partition_by_name(location);
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if (mtd == NULL) {
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fprintf(stderr, "%s: no mtd partition named \"%s\"",
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name, location);
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result = strdup("");
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goto done;
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}
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MtdWriteContext* ctx = mtd_write_partition(mtd);
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if (ctx == NULL) {
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fprintf(stderr, "%s: can't write \"%s\"", name, location);
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result = strdup("");
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goto done;
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}
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if (mtd_erase_blocks(ctx, -1) == -1) {
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mtd_write_close(ctx);
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fprintf(stderr, "%s: failed to erase \"%s\"", name, location);
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result = strdup("");
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goto done;
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}
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if (mtd_write_close(ctx) != 0) {
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fprintf(stderr, "%s: failed to close \"%s\"", name, location);
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result = strdup("");
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goto done;
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}
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result = location;
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#ifdef USE_EXT4
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} else if (strcmp(fs_type, "ext4") == 0) {
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reset_ext4fs_info();
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int status = make_ext4fs(location, NULL, NULL, 0, 0, 0);
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if (status != 0) {
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fprintf(stderr, "%s: make_ext4fs failed (%d) on %s",
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name, status, location);
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result = strdup("");
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goto done;
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}
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result = location;
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#endif
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} else {
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fprintf(stderr, "%s: unsupported fs_type \"%s\" partition_type \"%s\"",
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name, fs_type, partition_type);
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}
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done:
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free(fs_type);
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free(partition_type);
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if (result != location) free(location);
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return StringValue(result);
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}
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Value* DeleteFn(const char* name, State* state, int argc, Expr* argv[]) {
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char** paths = malloc(argc * sizeof(char*));
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int i;
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for (i = 0; i < argc; ++i) {
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paths[i] = Evaluate(state, argv[i]);
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if (paths[i] == NULL) {
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int j;
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for (j = 0; j < i; ++i) {
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free(paths[j]);
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}
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free(paths);
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return NULL;
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}
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}
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bool recursive = (strcmp(name, "delete_recursive") == 0);
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int success = 0;
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for (i = 0; i < argc; ++i) {
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if ((recursive ? dirUnlinkHierarchy(paths[i]) : unlink(paths[i])) == 0)
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++success;
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free(paths[i]);
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}
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free(paths);
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char buffer[10];
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sprintf(buffer, "%d", success);
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return StringValue(strdup(buffer));
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}
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Value* ShowProgressFn(const char* name, State* state, int argc, Expr* argv[]) {
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if (argc != 2) {
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return ErrorAbort(state, "%s() expects 2 args, got %d", name, argc);
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}
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char* frac_str;
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char* sec_str;
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if (ReadArgs(state, argv, 2, &frac_str, &sec_str) < 0) {
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return NULL;
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}
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double frac = strtod(frac_str, NULL);
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int sec = strtol(sec_str, NULL, 10);
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UpdaterInfo* ui = (UpdaterInfo*)(state->cookie);
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fprintf(ui->cmd_pipe, "progress %f %d\n", frac, sec);
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free(sec_str);
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return StringValue(frac_str);
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}
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Value* SetProgressFn(const char* name, State* state, int argc, Expr* argv[]) {
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if (argc != 1) {
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return ErrorAbort(state, "%s() expects 1 arg, got %d", name, argc);
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}
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char* frac_str;
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if (ReadArgs(state, argv, 1, &frac_str) < 0) {
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return NULL;
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}
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double frac = strtod(frac_str, NULL);
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UpdaterInfo* ui = (UpdaterInfo*)(state->cookie);
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fprintf(ui->cmd_pipe, "set_progress %f\n", frac);
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return StringValue(frac_str);
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}
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// package_extract_dir(package_path, destination_path)
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Value* PackageExtractDirFn(const char* name, State* state,
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int argc, Expr* argv[]) {
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if (argc != 2) {
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return ErrorAbort(state, "%s() expects 2 args, got %d", name, argc);
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}
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char* zip_path;
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char* dest_path;
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if (ReadArgs(state, argv, 2, &zip_path, &dest_path) < 0) return NULL;
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ZipArchive* za = ((UpdaterInfo*)(state->cookie))->package_zip;
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|
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// To create a consistent system image, never use the clock for timestamps.
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struct utimbuf timestamp = { 1217592000, 1217592000 }; // 8/1/2008 default
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bool success = mzExtractRecursive(za, zip_path, dest_path,
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MZ_EXTRACT_FILES_ONLY, ×tamp,
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NULL, NULL);
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free(zip_path);
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free(dest_path);
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return StringValue(strdup(success ? "t" : ""));
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}
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|
|
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// package_extract_file(package_path, destination_path)
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// or
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// package_extract_file(package_path)
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// to return the entire contents of the file as the result of this
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// function (the char* returned is actually a FileContents*).
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Value* PackageExtractFileFn(const char* name, State* state,
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int argc, Expr* argv[]) {
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if (argc != 1 && argc != 2) {
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return ErrorAbort(state, "%s() expects 1 or 2 args, got %d",
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name, argc);
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}
|
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bool success = false;
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if (argc == 2) {
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// The two-argument version extracts to a file.
|
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|
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char* zip_path;
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char* dest_path;
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if (ReadArgs(state, argv, 2, &zip_path, &dest_path) < 0) return NULL;
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ZipArchive* za = ((UpdaterInfo*)(state->cookie))->package_zip;
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const ZipEntry* entry = mzFindZipEntry(za, zip_path);
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if (entry == NULL) {
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fprintf(stderr, "%s: no %s in package\n", name, zip_path);
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goto done2;
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}
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FILE* f = fopen(dest_path, "wb");
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if (f == NULL) {
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fprintf(stderr, "%s: can't open %s for write: %s\n",
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name, dest_path, strerror(errno));
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goto done2;
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}
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success = mzExtractZipEntryToFile(za, entry, fileno(f));
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fclose(f);
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done2:
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free(zip_path);
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free(dest_path);
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return StringValue(strdup(success ? "t" : ""));
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} else {
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// The one-argument version returns the contents of the file
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// as the result.
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char* zip_path;
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Value* v = malloc(sizeof(Value));
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v->type = VAL_BLOB;
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v->size = -1;
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v->data = NULL;
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|
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if (ReadArgs(state, argv, 1, &zip_path) < 0) return NULL;
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|
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ZipArchive* za = ((UpdaterInfo*)(state->cookie))->package_zip;
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const ZipEntry* entry = mzFindZipEntry(za, zip_path);
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if (entry == NULL) {
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fprintf(stderr, "%s: no %s in package\n", name, zip_path);
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goto done1;
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}
|
|
|
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v->size = mzGetZipEntryUncompLen(entry);
|
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v->data = malloc(v->size);
|
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if (v->data == NULL) {
|
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fprintf(stderr, "%s: failed to allocate %ld bytes for %s\n",
|
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name, (long)v->size, zip_path);
|
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goto done1;
|
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}
|
|
|
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success = mzExtractZipEntryToBuffer(za, entry,
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(unsigned char *)v->data);
|
|
|
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done1:
|
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free(zip_path);
|
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if (!success) {
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free(v->data);
|
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v->data = NULL;
|
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v->size = -1;
|
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}
|
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return v;
|
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}
|
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}
|
|
|
|
|
|
// retouch_binaries(lib1, lib2, ...)
|
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Value* RetouchBinariesFn(const char* name, State* state,
|
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int argc, Expr* argv[]) {
|
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UpdaterInfo* ui = (UpdaterInfo*)(state->cookie);
|
|
|
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char **retouch_entries = ReadVarArgs(state, argc, argv);
|
|
if (retouch_entries == NULL) {
|
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return StringValue(strdup("t"));
|
|
}
|
|
|
|
// some randomness from the clock
|
|
int32_t override_base;
|
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bool override_set = false;
|
|
int32_t random_base = time(NULL) % 1024;
|
|
// some more randomness from /dev/random
|
|
FILE *f_random = fopen("/dev/random", "rb");
|
|
uint16_t random_bits = 0;
|
|
if (f_random != NULL) {
|
|
fread(&random_bits, 2, 1, f_random);
|
|
random_bits = random_bits % 1024;
|
|
fclose(f_random);
|
|
}
|
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random_base = (random_base + random_bits) % 1024;
|
|
fprintf(ui->cmd_pipe, "ui_print Random offset: 0x%x\n", random_base);
|
|
fprintf(ui->cmd_pipe, "ui_print\n");
|
|
|
|
// make sure we never randomize to zero; this let's us look at a file
|
|
// and know for sure whether it has been processed; important in the
|
|
// crash recovery process
|
|
if (random_base == 0) random_base = 1;
|
|
// make sure our randomization is page-aligned
|
|
random_base *= -0x1000;
|
|
override_base = random_base;
|
|
|
|
int i = 0;
|
|
bool success = true;
|
|
while (i < (argc - 1)) {
|
|
success = success && retouch_one_library(retouch_entries[i],
|
|
retouch_entries[i+1],
|
|
random_base,
|
|
override_set ?
|
|
NULL :
|
|
&override_base);
|
|
if (!success)
|
|
ErrorAbort(state, "Failed to retouch '%s'.", retouch_entries[i]);
|
|
|
|
free(retouch_entries[i]);
|
|
free(retouch_entries[i+1]);
|
|
i += 2;
|
|
|
|
if (success && override_base != 0) {
|
|
random_base = override_base;
|
|
override_set = true;
|
|
}
|
|
}
|
|
if (i < argc) {
|
|
free(retouch_entries[i]);
|
|
success = false;
|
|
}
|
|
free(retouch_entries);
|
|
|
|
if (!success) {
|
|
Value* v = malloc(sizeof(Value));
|
|
v->type = VAL_STRING;
|
|
v->data = NULL;
|
|
v->size = -1;
|
|
return v;
|
|
}
|
|
return StringValue(strdup("t"));
|
|
}
|
|
|
|
|
|
// undo_retouch_binaries(lib1, lib2, ...)
|
|
Value* UndoRetouchBinariesFn(const char* name, State* state,
|
|
int argc, Expr* argv[]) {
|
|
UpdaterInfo* ui = (UpdaterInfo*)(state->cookie);
|
|
|
|
char **retouch_entries = ReadVarArgs(state, argc, argv);
|
|
if (retouch_entries == NULL) {
|
|
return StringValue(strdup("t"));
|
|
}
|
|
|
|
int i = 0;
|
|
bool success = true;
|
|
int32_t override_base;
|
|
while (i < (argc-1)) {
|
|
success = success && retouch_one_library(retouch_entries[i],
|
|
retouch_entries[i+1],
|
|
0 /* undo => offset==0 */,
|
|
NULL);
|
|
if (!success)
|
|
ErrorAbort(state, "Failed to unretouch '%s'.",
|
|
retouch_entries[i]);
|
|
|
|
free(retouch_entries[i]);
|
|
free(retouch_entries[i+1]);
|
|
i += 2;
|
|
}
|
|
if (i < argc) {
|
|
free(retouch_entries[i]);
|
|
success = false;
|
|
}
|
|
free(retouch_entries);
|
|
|
|
if (!success) {
|
|
Value* v = malloc(sizeof(Value));
|
|
v->type = VAL_STRING;
|
|
v->data = NULL;
|
|
v->size = -1;
|
|
return v;
|
|
}
|
|
return StringValue(strdup("t"));
|
|
}
|
|
|
|
|
|
// symlink target src1 src2 ...
|
|
// unlinks any previously existing src1, src2, etc before creating symlinks.
|
|
Value* SymlinkFn(const char* name, State* state, int argc, Expr* argv[]) {
|
|
if (argc == 0) {
|
|
return ErrorAbort(state, "%s() expects 1+ args, got %d", name, argc);
|
|
}
|
|
char* target;
|
|
target = Evaluate(state, argv[0]);
|
|
if (target == NULL) return NULL;
|
|
|
|
char** srcs = ReadVarArgs(state, argc-1, argv+1);
|
|
if (srcs == NULL) {
|
|
free(target);
|
|
return NULL;
|
|
}
|
|
|
|
int i;
|
|
for (i = 0; i < argc-1; ++i) {
|
|
if (unlink(srcs[i]) < 0) {
|
|
if (errno != ENOENT) {
|
|
fprintf(stderr, "%s: failed to remove %s: %s\n",
|
|
name, srcs[i], strerror(errno));
|
|
}
|
|
}
|
|
if (symlink(target, srcs[i]) < 0) {
|
|
fprintf(stderr, "%s: failed to symlink %s to %s: %s\n",
|
|
name, srcs[i], target, strerror(errno));
|
|
}
|
|
free(srcs[i]);
|
|
}
|
|
free(srcs);
|
|
return StringValue(strdup(""));
|
|
}
|
|
|
|
|
|
Value* SetPermFn(const char* name, State* state, int argc, Expr* argv[]) {
|
|
char* result = NULL;
|
|
bool recursive = (strcmp(name, "set_perm_recursive") == 0);
|
|
|
|
int min_args = 4 + (recursive ? 1 : 0);
|
|
if (argc < min_args) {
|
|
return ErrorAbort(state, "%s() expects %d+ args, got %d", name, argc);
|
|
}
|
|
|
|
char** args = ReadVarArgs(state, argc, argv);
|
|
if (args == NULL) return NULL;
|
|
|
|
char* end;
|
|
int i;
|
|
|
|
int uid = strtoul(args[0], &end, 0);
|
|
if (*end != '\0' || args[0][0] == 0) {
|
|
ErrorAbort(state, "%s: \"%s\" not a valid uid", name, args[0]);
|
|
goto done;
|
|
}
|
|
|
|
int gid = strtoul(args[1], &end, 0);
|
|
if (*end != '\0' || args[1][0] == 0) {
|
|
ErrorAbort(state, "%s: \"%s\" not a valid gid", name, args[1]);
|
|
goto done;
|
|
}
|
|
|
|
if (recursive) {
|
|
int dir_mode = strtoul(args[2], &end, 0);
|
|
if (*end != '\0' || args[2][0] == 0) {
|
|
ErrorAbort(state, "%s: \"%s\" not a valid dirmode", name, args[2]);
|
|
goto done;
|
|
}
|
|
|
|
int file_mode = strtoul(args[3], &end, 0);
|
|
if (*end != '\0' || args[3][0] == 0) {
|
|
ErrorAbort(state, "%s: \"%s\" not a valid filemode",
|
|
name, args[3]);
|
|
goto done;
|
|
}
|
|
|
|
for (i = 4; i < argc; ++i) {
|
|
dirSetHierarchyPermissions(args[i], uid, gid, dir_mode, file_mode);
|
|
}
|
|
} else {
|
|
int mode = strtoul(args[2], &end, 0);
|
|
if (*end != '\0' || args[2][0] == 0) {
|
|
ErrorAbort(state, "%s: \"%s\" not a valid mode", name, args[2]);
|
|
goto done;
|
|
}
|
|
|
|
for (i = 3; i < argc; ++i) {
|
|
if (chown(args[i], uid, gid) < 0) {
|
|
fprintf(stderr, "%s: chown of %s to %d %d failed: %s\n",
|
|
name, args[i], uid, gid, strerror(errno));
|
|
}
|
|
if (chmod(args[i], mode) < 0) {
|
|
fprintf(stderr, "%s: chmod of %s to %o failed: %s\n",
|
|
name, args[i], mode, strerror(errno));
|
|
}
|
|
}
|
|
}
|
|
result = strdup("");
|
|
|
|
done:
|
|
for (i = 0; i < argc; ++i) {
|
|
free(args[i]);
|
|
}
|
|
free(args);
|
|
|
|
return StringValue(result);
|
|
}
|
|
|
|
|
|
Value* GetPropFn(const char* name, State* state, int argc, Expr* argv[]) {
|
|
if (argc != 1) {
|
|
return ErrorAbort(state, "%s() expects 1 arg, got %d", name, argc);
|
|
}
|
|
char* key;
|
|
key = Evaluate(state, argv[0]);
|
|
if (key == NULL) return NULL;
|
|
|
|
char value[PROPERTY_VALUE_MAX];
|
|
property_get(key, value, "");
|
|
free(key);
|
|
|
|
return StringValue(strdup(value));
|
|
}
|
|
|
|
|
|
// file_getprop(file, key)
|
|
//
|
|
// interprets 'file' as a getprop-style file (key=value pairs, one
|
|
// per line, # comment lines and blank lines okay), and returns the value
|
|
// for 'key' (or "" if it isn't defined).
|
|
Value* FileGetPropFn(const char* name, State* state, int argc, Expr* argv[]) {
|
|
char* result = NULL;
|
|
char* buffer = NULL;
|
|
char* filename;
|
|
char* key;
|
|
if (ReadArgs(state, argv, 2, &filename, &key) < 0) {
|
|
return NULL;
|
|
}
|
|
|
|
struct stat st;
|
|
if (stat(filename, &st) < 0) {
|
|
ErrorAbort(state, "%s: failed to stat \"%s\": %s",
|
|
name, filename, strerror(errno));
|
|
goto done;
|
|
}
|
|
|
|
#define MAX_FILE_GETPROP_SIZE 65536
|
|
|
|
if (st.st_size > MAX_FILE_GETPROP_SIZE) {
|
|
ErrorAbort(state, "%s too large for %s (max %d)",
|
|
filename, name, MAX_FILE_GETPROP_SIZE);
|
|
goto done;
|
|
}
|
|
|
|
buffer = malloc(st.st_size+1);
|
|
if (buffer == NULL) {
|
|
ErrorAbort(state, "%s: failed to alloc %d bytes", name, st.st_size+1);
|
|
goto done;
|
|
}
|
|
|
|
FILE* f = fopen(filename, "rb");
|
|
if (f == NULL) {
|
|
ErrorAbort(state, "%s: failed to open %s: %s",
|
|
name, filename, strerror(errno));
|
|
goto done;
|
|
}
|
|
|
|
if (fread(buffer, 1, st.st_size, f) != st.st_size) {
|
|
ErrorAbort(state, "%s: failed to read %d bytes from %s",
|
|
name, st.st_size+1, filename);
|
|
fclose(f);
|
|
goto done;
|
|
}
|
|
buffer[st.st_size] = '\0';
|
|
|
|
fclose(f);
|
|
|
|
char* line = strtok(buffer, "\n");
|
|
do {
|
|
// skip whitespace at start of line
|
|
while (*line && isspace(*line)) ++line;
|
|
|
|
// comment or blank line: skip to next line
|
|
if (*line == '\0' || *line == '#') continue;
|
|
|
|
char* equal = strchr(line, '=');
|
|
if (equal == NULL) {
|
|
ErrorAbort(state, "%s: malformed line \"%s\": %s not a prop file?",
|
|
name, line, filename);
|
|
goto done;
|
|
}
|
|
|
|
// trim whitespace between key and '='
|
|
char* key_end = equal-1;
|
|
while (key_end > line && isspace(*key_end)) --key_end;
|
|
key_end[1] = '\0';
|
|
|
|
// not the key we're looking for
|
|
if (strcmp(key, line) != 0) continue;
|
|
|
|
// skip whitespace after the '=' to the start of the value
|
|
char* val_start = equal+1;
|
|
while(*val_start && isspace(*val_start)) ++val_start;
|
|
|
|
// trim trailing whitespace
|
|
char* val_end = val_start + strlen(val_start)-1;
|
|
while (val_end > val_start && isspace(*val_end)) --val_end;
|
|
val_end[1] = '\0';
|
|
|
|
result = strdup(val_start);
|
|
break;
|
|
|
|
} while ((line = strtok(NULL, "\n")));
|
|
|
|
if (result == NULL) result = strdup("");
|
|
|
|
done:
|
|
free(filename);
|
|
free(key);
|
|
free(buffer);
|
|
return StringValue(result);
|
|
}
|
|
|
|
|
|
static bool write_raw_image_cb(const unsigned char* data,
|
|
int data_len, void* ctx) {
|
|
int r = mtd_write_data((MtdWriteContext*)ctx, (const char *)data, data_len);
|
|
if (r == data_len) return true;
|
|
fprintf(stderr, "%s\n", strerror(errno));
|
|
return false;
|
|
}
|
|
|
|
// write_raw_image(file, partition)
|
|
Value* WriteRawImageFn(const char* name, State* state, int argc, Expr* argv[]) {
|
|
char* result = NULL;
|
|
|
|
char* partition;
|
|
char* filename;
|
|
if (ReadArgs(state, argv, 2, &filename, &partition) < 0) {
|
|
return NULL;
|
|
}
|
|
|
|
if (strlen(partition) == 0) {
|
|
ErrorAbort(state, "partition argument to %s can't be empty", name);
|
|
goto done;
|
|
}
|
|
if (strlen(filename) == 0) {
|
|
ErrorAbort(state, "file argument to %s can't be empty", name);
|
|
goto done;
|
|
}
|
|
|
|
mtd_scan_partitions();
|
|
const MtdPartition* mtd = mtd_find_partition_by_name(partition);
|
|
if (mtd == NULL) {
|
|
fprintf(stderr, "%s: no mtd partition named \"%s\"\n", name, partition);
|
|
result = strdup("");
|
|
goto done;
|
|
}
|
|
|
|
MtdWriteContext* ctx = mtd_write_partition(mtd);
|
|
if (ctx == NULL) {
|
|
fprintf(stderr, "%s: can't write mtd partition \"%s\"\n",
|
|
name, partition);
|
|
result = strdup("");
|
|
goto done;
|
|
}
|
|
|
|
bool success;
|
|
|
|
FILE* f = fopen(filename, "rb");
|
|
if (f == NULL) {
|
|
fprintf(stderr, "%s: can't open %s: %s\n",
|
|
name, filename, strerror(errno));
|
|
result = strdup("");
|
|
goto done;
|
|
}
|
|
|
|
success = true;
|
|
char* buffer = malloc(BUFSIZ);
|
|
int read;
|
|
while (success && (read = fread(buffer, 1, BUFSIZ, f)) > 0) {
|
|
int wrote = mtd_write_data(ctx, buffer, read);
|
|
success = success && (wrote == read);
|
|
if (!success) {
|
|
fprintf(stderr, "mtd_write_data to %s failed: %s\n",
|
|
partition, strerror(errno));
|
|
}
|
|
}
|
|
free(buffer);
|
|
fclose(f);
|
|
|
|
if (mtd_erase_blocks(ctx, -1) == -1) {
|
|
fprintf(stderr, "%s: error erasing blocks of %s\n", name, partition);
|
|
}
|
|
if (mtd_write_close(ctx) != 0) {
|
|
fprintf(stderr, "%s: error closing write of %s\n", name, partition);
|
|
}
|
|
|
|
printf("%s %s partition from %s\n",
|
|
success ? "wrote" : "failed to write", partition, filename);
|
|
|
|
result = success ? partition : strdup("");
|
|
|
|
done:
|
|
if (result != partition) free(partition);
|
|
free(filename);
|
|
return StringValue(result);
|
|
}
|
|
|
|
// apply_patch_space(bytes)
|
|
Value* ApplyPatchSpaceFn(const char* name, State* state,
|
|
int argc, Expr* argv[]) {
|
|
char* bytes_str;
|
|
if (ReadArgs(state, argv, 1, &bytes_str) < 0) {
|
|
return NULL;
|
|
}
|
|
|
|
char* endptr;
|
|
size_t bytes = strtol(bytes_str, &endptr, 10);
|
|
if (bytes == 0 && endptr == bytes_str) {
|
|
ErrorAbort(state, "%s(): can't parse \"%s\" as byte count\n\n",
|
|
name, bytes_str);
|
|
free(bytes_str);
|
|
return NULL;
|
|
}
|
|
|
|
return StringValue(strdup(CacheSizeCheck(bytes) ? "" : "t"));
|
|
}
|
|
|
|
|
|
// apply_patch(srcfile, tgtfile, tgtsha1, tgtsize, sha1_1, patch_1, ...)
|
|
Value* ApplyPatchFn(const char* name, State* state, int argc, Expr* argv[]) {
|
|
if (argc < 6 || (argc % 2) == 1) {
|
|
return ErrorAbort(state, "%s(): expected at least 6 args and an "
|
|
"even number, got %d",
|
|
name, argc);
|
|
}
|
|
|
|
char* source_filename;
|
|
char* target_filename;
|
|
char* target_sha1;
|
|
char* target_size_str;
|
|
if (ReadArgs(state, argv, 4, &source_filename, &target_filename,
|
|
&target_sha1, &target_size_str) < 0) {
|
|
return NULL;
|
|
}
|
|
|
|
char* endptr;
|
|
size_t target_size = strtol(target_size_str, &endptr, 10);
|
|
if (target_size == 0 && endptr == target_size_str) {
|
|
ErrorAbort(state, "%s(): can't parse \"%s\" as byte count",
|
|
name, target_size_str);
|
|
free(source_filename);
|
|
free(target_filename);
|
|
free(target_sha1);
|
|
free(target_size_str);
|
|
return NULL;
|
|
}
|
|
|
|
int patchcount = (argc-4) / 2;
|
|
Value** patches = ReadValueVarArgs(state, argc-4, argv+4);
|
|
|
|
int i;
|
|
for (i = 0; i < patchcount; ++i) {
|
|
if (patches[i*2]->type != VAL_STRING) {
|
|
ErrorAbort(state, "%s(): sha-1 #%d is not string", name, i);
|
|
break;
|
|
}
|
|
if (patches[i*2+1]->type != VAL_BLOB) {
|
|
ErrorAbort(state, "%s(): patch #%d is not blob", name, i);
|
|
break;
|
|
}
|
|
}
|
|
if (i != patchcount) {
|
|
for (i = 0; i < patchcount*2; ++i) {
|
|
FreeValue(patches[i]);
|
|
}
|
|
free(patches);
|
|
return NULL;
|
|
}
|
|
|
|
char** patch_sha_str = malloc(patchcount * sizeof(char*));
|
|
for (i = 0; i < patchcount; ++i) {
|
|
patch_sha_str[i] = patches[i*2]->data;
|
|
patches[i*2]->data = NULL;
|
|
FreeValue(patches[i*2]);
|
|
patches[i] = patches[i*2+1];
|
|
}
|
|
|
|
int result = applypatch(source_filename, target_filename,
|
|
target_sha1, target_size,
|
|
patchcount, patch_sha_str, patches);
|
|
|
|
for (i = 0; i < patchcount; ++i) {
|
|
FreeValue(patches[i]);
|
|
}
|
|
free(patch_sha_str);
|
|
free(patches);
|
|
|
|
return StringValue(strdup(result == 0 ? "t" : ""));
|
|
}
|
|
|
|
// apply_patch_check(file, [sha1_1, ...])
|
|
Value* ApplyPatchCheckFn(const char* name, State* state,
|
|
int argc, Expr* argv[]) {
|
|
if (argc < 1) {
|
|
return ErrorAbort(state, "%s(): expected at least 1 arg, got %d",
|
|
name, argc);
|
|
}
|
|
|
|
char* filename;
|
|
if (ReadArgs(state, argv, 1, &filename) < 0) {
|
|
return NULL;
|
|
}
|
|
|
|
int patchcount = argc-1;
|
|
char** sha1s = ReadVarArgs(state, argc-1, argv+1);
|
|
|
|
int result = applypatch_check(filename, patchcount, sha1s);
|
|
|
|
int i;
|
|
for (i = 0; i < patchcount; ++i) {
|
|
free(sha1s[i]);
|
|
}
|
|
free(sha1s);
|
|
|
|
return StringValue(strdup(result == 0 ? "t" : ""));
|
|
}
|
|
|
|
Value* UIPrintFn(const char* name, State* state, int argc, Expr* argv[]) {
|
|
char** args = ReadVarArgs(state, argc, argv);
|
|
if (args == NULL) {
|
|
return NULL;
|
|
}
|
|
|
|
int size = 0;
|
|
int i;
|
|
for (i = 0; i < argc; ++i) {
|
|
size += strlen(args[i]);
|
|
}
|
|
char* buffer = malloc(size+1);
|
|
size = 0;
|
|
for (i = 0; i < argc; ++i) {
|
|
strcpy(buffer+size, args[i]);
|
|
size += strlen(args[i]);
|
|
free(args[i]);
|
|
}
|
|
free(args);
|
|
buffer[size] = '\0';
|
|
|
|
char* line = strtok(buffer, "\n");
|
|
while (line) {
|
|
fprintf(((UpdaterInfo*)(state->cookie))->cmd_pipe,
|
|
"ui_print %s\n", line);
|
|
line = strtok(NULL, "\n");
|
|
}
|
|
fprintf(((UpdaterInfo*)(state->cookie))->cmd_pipe, "ui_print\n");
|
|
|
|
return StringValue(buffer);
|
|
}
|
|
|
|
Value* RunProgramFn(const char* name, State* state, int argc, Expr* argv[]) {
|
|
if (argc < 1) {
|
|
return ErrorAbort(state, "%s() expects at least 1 arg", name);
|
|
}
|
|
char** args = ReadVarArgs(state, argc, argv);
|
|
if (args == NULL) {
|
|
return NULL;
|
|
}
|
|
|
|
char** args2 = malloc(sizeof(char*) * (argc+1));
|
|
memcpy(args2, args, sizeof(char*) * argc);
|
|
args2[argc] = NULL;
|
|
|
|
fprintf(stderr, "about to run program [%s] with %d args\n", args2[0], argc);
|
|
|
|
pid_t child = fork();
|
|
if (child == 0) {
|
|
execv(args2[0], args2);
|
|
fprintf(stderr, "run_program: execv failed: %s\n", strerror(errno));
|
|
_exit(1);
|
|
}
|
|
int status;
|
|
waitpid(child, &status, 0);
|
|
if (WIFEXITED(status)) {
|
|
if (WEXITSTATUS(status) != 0) {
|
|
fprintf(stderr, "run_program: child exited with status %d\n",
|
|
WEXITSTATUS(status));
|
|
}
|
|
} else if (WIFSIGNALED(status)) {
|
|
fprintf(stderr, "run_program: child terminated by signal %d\n",
|
|
WTERMSIG(status));
|
|
}
|
|
|
|
int i;
|
|
for (i = 0; i < argc; ++i) {
|
|
free(args[i]);
|
|
}
|
|
free(args);
|
|
free(args2);
|
|
|
|
char buffer[20];
|
|
sprintf(buffer, "%d", status);
|
|
|
|
return StringValue(strdup(buffer));
|
|
}
|
|
|
|
// Take a sha-1 digest and return it as a newly-allocated hex string.
|
|
static char* PrintSha1(uint8_t* digest) {
|
|
char* buffer = malloc(SHA_DIGEST_SIZE*2 + 1);
|
|
int i;
|
|
const char* alphabet = "0123456789abcdef";
|
|
for (i = 0; i < SHA_DIGEST_SIZE; ++i) {
|
|
buffer[i*2] = alphabet[(digest[i] >> 4) & 0xf];
|
|
buffer[i*2+1] = alphabet[digest[i] & 0xf];
|
|
}
|
|
buffer[i*2] = '\0';
|
|
return buffer;
|
|
}
|
|
|
|
// sha1_check(data)
|
|
// to return the sha1 of the data (given in the format returned by
|
|
// read_file).
|
|
//
|
|
// sha1_check(data, sha1_hex, [sha1_hex, ...])
|
|
// returns the sha1 of the file if it matches any of the hex
|
|
// strings passed, or "" if it does not equal any of them.
|
|
//
|
|
Value* Sha1CheckFn(const char* name, State* state, int argc, Expr* argv[]) {
|
|
if (argc < 1) {
|
|
return ErrorAbort(state, "%s() expects at least 1 arg", name);
|
|
}
|
|
|
|
Value** args = ReadValueVarArgs(state, argc, argv);
|
|
if (args == NULL) {
|
|
return NULL;
|
|
}
|
|
|
|
if (args[0]->size < 0) {
|
|
fprintf(stderr, "%s(): no file contents received", name);
|
|
return StringValue(strdup(""));
|
|
}
|
|
uint8_t digest[SHA_DIGEST_SIZE];
|
|
SHA(args[0]->data, args[0]->size, digest);
|
|
FreeValue(args[0]);
|
|
|
|
if (argc == 1) {
|
|
return StringValue(PrintSha1(digest));
|
|
}
|
|
|
|
int i;
|
|
uint8_t* arg_digest = malloc(SHA_DIGEST_SIZE);
|
|
for (i = 1; i < argc; ++i) {
|
|
if (args[i]->type != VAL_STRING) {
|
|
fprintf(stderr, "%s(): arg %d is not a string; skipping",
|
|
name, i);
|
|
} else if (ParseSha1(args[i]->data, arg_digest) != 0) {
|
|
// Warn about bad args and skip them.
|
|
fprintf(stderr, "%s(): error parsing \"%s\" as sha-1; skipping",
|
|
name, args[i]->data);
|
|
} else if (memcmp(digest, arg_digest, SHA_DIGEST_SIZE) == 0) {
|
|
break;
|
|
}
|
|
FreeValue(args[i]);
|
|
}
|
|
if (i >= argc) {
|
|
// Didn't match any of the hex strings; return false.
|
|
return StringValue(strdup(""));
|
|
}
|
|
// Found a match; free all the remaining arguments and return the
|
|
// matched one.
|
|
int j;
|
|
for (j = i+1; j < argc; ++j) {
|
|
FreeValue(args[j]);
|
|
}
|
|
return args[i];
|
|
}
|
|
|
|
// Read a local file and return its contents (the Value* returned
|
|
// is actually a FileContents*).
|
|
Value* ReadFileFn(const char* name, State* state, int argc, Expr* argv[]) {
|
|
if (argc != 1) {
|
|
return ErrorAbort(state, "%s() expects 1 arg, got %d", name, argc);
|
|
}
|
|
char* filename;
|
|
if (ReadArgs(state, argv, 1, &filename) < 0) return NULL;
|
|
|
|
Value* v = malloc(sizeof(Value));
|
|
v->type = VAL_BLOB;
|
|
|
|
FileContents fc;
|
|
if (LoadFileContents(filename, &fc, RETOUCH_DONT_MASK) != 0) {
|
|
ErrorAbort(state, "%s() loading \"%s\" failed: %s",
|
|
name, filename, strerror(errno));
|
|
free(filename);
|
|
free(v);
|
|
free(fc.data);
|
|
return NULL;
|
|
}
|
|
|
|
v->size = fc.size;
|
|
v->data = (char*)fc.data;
|
|
|
|
free(filename);
|
|
return v;
|
|
}
|
|
|
|
void RegisterInstallFunctions() {
|
|
RegisterFunction("mount", MountFn);
|
|
RegisterFunction("is_mounted", IsMountedFn);
|
|
RegisterFunction("unmount", UnmountFn);
|
|
RegisterFunction("format", FormatFn);
|
|
RegisterFunction("show_progress", ShowProgressFn);
|
|
RegisterFunction("set_progress", SetProgressFn);
|
|
RegisterFunction("delete", DeleteFn);
|
|
RegisterFunction("delete_recursive", DeleteFn);
|
|
RegisterFunction("package_extract_dir", PackageExtractDirFn);
|
|
RegisterFunction("package_extract_file", PackageExtractFileFn);
|
|
RegisterFunction("retouch_binaries", RetouchBinariesFn);
|
|
RegisterFunction("undo_retouch_binaries", UndoRetouchBinariesFn);
|
|
RegisterFunction("symlink", SymlinkFn);
|
|
RegisterFunction("set_perm", SetPermFn);
|
|
RegisterFunction("set_perm_recursive", SetPermFn);
|
|
|
|
RegisterFunction("getprop", GetPropFn);
|
|
RegisterFunction("file_getprop", FileGetPropFn);
|
|
RegisterFunction("write_raw_image", WriteRawImageFn);
|
|
|
|
RegisterFunction("apply_patch", ApplyPatchFn);
|
|
RegisterFunction("apply_patch_check", ApplyPatchCheckFn);
|
|
RegisterFunction("apply_patch_space", ApplyPatchSpaceFn);
|
|
|
|
RegisterFunction("read_file", ReadFileFn);
|
|
RegisterFunction("sha1_check", Sha1CheckFn);
|
|
|
|
RegisterFunction("ui_print", UIPrintFn);
|
|
|
|
RegisterFunction("run_program", RunProgramFn);
|
|
}
|