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-rw-r--r--Android.mk3
-rw-r--r--encryptedfs_provisioning.c283
-rw-r--r--encryptedfs_provisioning.h51
-rw-r--r--recovery.c64
4 files changed, 2 insertions, 399 deletions
diff --git a/Android.mk b/Android.mk
index 27ffec70f..cacb6282d 100644
--- a/Android.mk
+++ b/Android.mk
@@ -12,8 +12,7 @@ LOCAL_SRC_FILES := \
install.c \
roots.c \
ui.c \
- verifier.c \
- encryptedfs_provisioning.c
+ verifier.c
LOCAL_MODULE := recovery
diff --git a/encryptedfs_provisioning.c b/encryptedfs_provisioning.c
deleted file mode 100644
index 601c817de..000000000
--- a/encryptedfs_provisioning.c
+++ /dev/null
@@ -1,283 +0,0 @@
-/*
- * Copyright (C) 2009 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 <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/mount.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <unistd.h>
-
-#include "encryptedfs_provisioning.h"
-#include "cutils/misc.h"
-#include "cutils/properties.h"
-#include "common.h"
-#include "mtdutils/mtdutils.h"
-#include "mtdutils/mounts.h"
-#include "roots.h"
-
-const char* encrypted_fs_enabled_property = "persist.security.secfs.enabled";
-const char* encrypted_fs_property_dir = "/data/property/";
-const char* encrypted_fs_system_dir = "/data/system/";
-const char* encrypted_fs_key_file_name = "/data/fs_key.dat";
-const char* encrypted_fs_salt_file_name = "/data/hash_salt.dat";
-const char* encrypted_fs_hash_file_src_name = "/data/system/password.key";
-const char* encrypted_fs_hash_file_dst_name = "/data/hash.dat";
-const char* encrypted_fs_entropy_file_src_name = "/data/system/entropy.dat";
-const char* encrypted_fs_entropy_file_dst_name = "/data/ported_entropy.dat";
-
-void get_property_file_name(char *buffer, const char *property_name) {
- sprintf(buffer, "%s%s", encrypted_fs_property_dir, property_name);
-}
-
-int get_binary_file_contents(char *buffer, int buf_size, const char *file_name, int *out_size) {
- FILE *in_file;
- int read_bytes;
-
- in_file = fopen(file_name, "r");
- if (in_file == NULL) {
- LOGE("Secure FS: error accessing key file.");
- return ENCRYPTED_FS_ERROR;
- }
-
- read_bytes = fread(buffer, 1, buf_size, in_file);
- if (out_size == NULL) {
- if (read_bytes != buf_size) {
- // Error or unexpected data
- fclose(in_file);
- LOGE("Secure FS: error reading conmplete key.");
- return ENCRYPTED_FS_ERROR;
- }
- } else {
- *out_size = read_bytes;
- }
- fclose(in_file);
- return ENCRYPTED_FS_OK;
-}
-
-int set_binary_file_contents(char *buffer, int buf_size, const char *file_name) {
- FILE *out_file;
- int write_bytes;
-
- out_file = fopen(file_name, "w");
- if (out_file == NULL) {
- LOGE("Secure FS: error setting up key file.");
- return ENCRYPTED_FS_ERROR;
- }
-
- write_bytes = fwrite(buffer, 1, buf_size, out_file);
- if (write_bytes != buf_size) {
- // Error or unexpected data
- fclose(out_file);
- LOGE("Secure FS: error reading conmplete key.");
- return ENCRYPTED_FS_ERROR;
- }
-
- fclose(out_file);
- return ENCRYPTED_FS_OK;
-}
-
-int get_text_file_contents(char *buffer, int buf_size, char *file_name) {
- FILE *in_file;
- char *read_data;
-
- in_file = fopen(file_name, "r");
- if (in_file == NULL) {
- LOGE("Secure FS: error accessing properties.");
- return ENCRYPTED_FS_ERROR;
- }
-
- read_data = fgets(buffer, buf_size, in_file);
- if (read_data == NULL) {
- // Error or unexpected data
- fclose(in_file);
- LOGE("Secure FS: error accessing properties.");
- return ENCRYPTED_FS_ERROR;
- }
-
- fclose(in_file);
- return ENCRYPTED_FS_OK;
-}
-
-int set_text_file_contents(char *buffer, char *file_name) {
- FILE *out_file;
- int result;
-
- out_file = fopen(file_name, "w");
- if (out_file == NULL) {
- LOGE("Secure FS: error setting up properties.");
- return ENCRYPTED_FS_ERROR;
- }
-
- result = fputs(buffer, out_file);
- if (result != 0) {
- // Error or unexpected data
- fclose(out_file);
- LOGE("Secure FS: error setting up properties.");
- return ENCRYPTED_FS_ERROR;
- }
-
- fflush(out_file);
- fclose(out_file);
- return ENCRYPTED_FS_OK;
-}
-
-int read_encrypted_fs_boolean_property(const char *prop_name, int *value) {
- char prop_file_name[PROPERTY_KEY_MAX + 32];
- char prop_value[PROPERTY_VALUE_MAX];
- int result;
-
- get_property_file_name(prop_file_name, prop_name);
- result = get_text_file_contents(prop_value, PROPERTY_VALUE_MAX, prop_file_name);
-
- if (result < 0) {
- return result;
- }
-
- if (strncmp(prop_value, "1", 1) == 0) {
- *value = 1;
- } else if (strncmp(prop_value, "0", 1) == 0) {
- *value = 0;
- } else {
- LOGE("Secure FS: error accessing properties.");
- return ENCRYPTED_FS_ERROR;
- }
-
- return ENCRYPTED_FS_OK;
-}
-
-int write_encrypted_fs_boolean_property(const char *prop_name, int value) {
- char prop_file_name[PROPERTY_KEY_MAX + 32];
- char prop_value[PROPERTY_VALUE_MAX];
- int result;
-
- get_property_file_name(prop_file_name, prop_name);
-
- // Create the directory if needed
- mkdir(encrypted_fs_property_dir, 0755);
- if (value == 1) {
- result = set_text_file_contents("1", prop_file_name);
- } else if (value == 0) {
- result = set_text_file_contents("0", prop_file_name);
- } else {
- return ENCRYPTED_FS_ERROR;
- }
- if (result < 0) {
- return result;
- }
-
- return ENCRYPTED_FS_OK;
-}
-
-int read_encrypted_fs_info(encrypted_fs_info *encrypted_fs_data) {
- int result;
- int value;
- result = ensure_path_mounted("/data");
- if (result != 0) {
- LOGE("Secure FS: error mounting userdata partition.");
- return ENCRYPTED_FS_ERROR;
- }
-
- // Read the pre-generated encrypted FS key, password hash and salt.
- result = get_binary_file_contents(encrypted_fs_data->key, ENCRYPTED_FS_KEY_SIZE,
- encrypted_fs_key_file_name, NULL);
- if (result != 0) {
- LOGE("Secure FS: error reading generated file system key.");
- return ENCRYPTED_FS_ERROR;
- }
-
- result = get_binary_file_contents(encrypted_fs_data->salt, ENCRYPTED_FS_SALT_SIZE,
- encrypted_fs_salt_file_name, &(encrypted_fs_data->salt_length));
- if (result != 0) {
- LOGE("Secure FS: error reading file system salt.");
- return ENCRYPTED_FS_ERROR;
- }
-
- result = get_binary_file_contents(encrypted_fs_data->hash, ENCRYPTED_FS_MAX_HASH_SIZE,
- encrypted_fs_hash_file_src_name, &(encrypted_fs_data->hash_length));
- if (result != 0) {
- LOGE("Secure FS: error reading password hash.");
- return ENCRYPTED_FS_ERROR;
- }
-
- result = get_binary_file_contents(encrypted_fs_data->entropy, ENTROPY_MAX_SIZE,
- encrypted_fs_entropy_file_src_name, &(encrypted_fs_data->entropy_length));
- if (result != 0) {
- LOGE("Secure FS: error reading ported entropy.");
- return ENCRYPTED_FS_ERROR;
- }
-
- result = ensure_path_unmounted("/data");
- if (result != 0) {
- LOGE("Secure FS: error unmounting data partition.");
- return ENCRYPTED_FS_ERROR;
- }
-
- return ENCRYPTED_FS_OK;
-}
-
-int restore_encrypted_fs_info(encrypted_fs_info *encrypted_fs_data) {
- int result;
- result = ensure_path_mounted("/data");
- if (result != 0) {
- LOGE("Secure FS: error mounting userdata partition.");
- return ENCRYPTED_FS_ERROR;
- }
-
- // Write the pre-generated secure FS key, password hash and salt.
- result = set_binary_file_contents(encrypted_fs_data->key, ENCRYPTED_FS_KEY_SIZE,
- encrypted_fs_key_file_name);
- if (result != 0) {
- LOGE("Secure FS: error writing generated file system key.");
- return ENCRYPTED_FS_ERROR;
- }
-
- result = set_binary_file_contents(encrypted_fs_data->salt, encrypted_fs_data->salt_length,
- encrypted_fs_salt_file_name);
- if (result != 0) {
- LOGE("Secure FS: error writing file system salt.");
- return ENCRYPTED_FS_ERROR;
- }
-
- result = set_binary_file_contents(encrypted_fs_data->hash, encrypted_fs_data->hash_length,
- encrypted_fs_hash_file_dst_name);
- if (result != 0) {
- LOGE("Secure FS: error writing password hash.");
- return ENCRYPTED_FS_ERROR;
- }
-
- result = set_binary_file_contents(encrypted_fs_data->entropy, encrypted_fs_data->entropy_length,
- encrypted_fs_entropy_file_dst_name);
- if (result != 0) {
- LOGE("Secure FS: error writing ported entropy.");
- return ENCRYPTED_FS_ERROR;
- }
-
- // Set the secure FS properties to their respective values
- result = write_encrypted_fs_boolean_property(encrypted_fs_enabled_property, encrypted_fs_data->mode);
- if (result != 0) {
- return result;
- }
-
- result = ensure_path_unmounted("/data");
- if (result != 0) {
- LOGE("Secure FS: error unmounting data partition.");
- return ENCRYPTED_FS_ERROR;
- }
-
- return ENCRYPTED_FS_OK;
-}
diff --git a/encryptedfs_provisioning.h b/encryptedfs_provisioning.h
deleted file mode 100644
index 284605d20..000000000
--- a/encryptedfs_provisioning.h
+++ /dev/null
@@ -1,51 +0,0 @@
-/*
- * Copyright (C) 2009 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 <stdio.h>
-
-#ifndef __ENCRYPTEDFS_PROVISIONING_H__
-#define __ENCRYPTEDFS_PROVISIONING_H__
-
-#define MODE_ENCRYPTED_FS_DISABLED 0
-#define MODE_ENCRYPTED_FS_ENABLED 1
-
-#define ENCRYPTED_FS_OK 0
-#define ENCRYPTED_FS_ERROR (-1)
-
-#define ENCRYPTED_FS_KEY_SIZE 16
-#define ENCRYPTED_FS_SALT_SIZE 16
-#define ENCRYPTED_FS_MAX_HASH_SIZE 128
-#define ENTROPY_MAX_SIZE 4096
-
-struct encrypted_fs_info {
- int mode;
- char key[ENCRYPTED_FS_KEY_SIZE];
- char salt[ENCRYPTED_FS_SALT_SIZE];
- int salt_length;
- char hash[ENCRYPTED_FS_MAX_HASH_SIZE];
- int hash_length;
- char entropy[ENTROPY_MAX_SIZE];
- int entropy_length;
-};
-
-typedef struct encrypted_fs_info encrypted_fs_info;
-
-int read_encrypted_fs_info(encrypted_fs_info *secure_fs_data);
-
-int restore_encrypted_fs_info(encrypted_fs_info *secure_data);
-
-#endif /* __ENCRYPTEDFS_PROVISIONING_H__ */
-
diff --git a/recovery.c b/recovery.c
index 9ad075d74..aebfba4f8 100644
--- a/recovery.c
+++ b/recovery.c
@@ -38,14 +38,12 @@
#include "minzip/DirUtil.h"
#include "roots.h"
#include "recovery_ui.h"
-#include "encryptedfs_provisioning.h"
static const struct option OPTIONS[] = {
{ "send_intent", required_argument, NULL, 's' },
{ "update_package", required_argument, NULL, 'u' },
{ "wipe_data", no_argument, NULL, 'w' },
{ "wipe_cache", no_argument, NULL, 'c' },
- { "set_encrypted_filesystems", required_argument, NULL, 'e' },
{ "show_text", no_argument, NULL, 't' },
{ NULL, 0, NULL, 0 },
};
@@ -114,26 +112,6 @@ static const char *SIDELOAD_TEMP_DIR = "/tmp/sideload";
* 8g. finish_recovery() erases BCB
* -- after this, rebooting will (try to) restart the main system --
* 9. main() calls reboot() to boot main system
- *
- * SECURE FILE SYSTEMS ENABLE/DISABLE
- * 1. user selects "enable encrypted file systems"
- * 2. main system writes "--set_encrypted_filesystems=on|off" to
- * /cache/recovery/command
- * 3. main system reboots into recovery
- * 4. get_args() writes BCB with "boot-recovery" and
- * "--set_encrypted_filesystems=on|off"
- * -- after this, rebooting will restart the transition --
- * 5. read_encrypted_fs_info() retrieves encrypted file systems settings from /data
- * Settings include: property to specify the Encrypted FS istatus and
- * FS encryption key if enabled (not yet implemented)
- * 6. erase_volume() reformats /data
- * 7. erase_volume() reformats /cache
- * 8. restore_encrypted_fs_info() writes required encrypted file systems settings to /data
- * Settings include: property to specify the Encrypted FS status and
- * FS encryption key if enabled (not yet implemented)
- * 9. finish_recovery() erases BCB
- * -- after this, rebooting will restart the main system --
- * 10. main() calls reboot() to boot main system
*/
static const int MAX_ARG_LENGTH = 4096;
@@ -708,10 +686,7 @@ main(int argc, char **argv) {
int previous_runs = 0;
const char *send_intent = NULL;
const char *update_package = NULL;
- const char *encrypted_fs_mode = NULL;
int wipe_data = 0, wipe_cache = 0;
- int toggle_secure_fs = 0;
- encrypted_fs_info encrypted_fs_data;
int arg;
while ((arg = getopt_long(argc, argv, "", OPTIONS, NULL)) != -1) {
@@ -721,7 +696,6 @@ main(int argc, char **argv) {
case 'u': update_package = optarg; break;
case 'w': wipe_data = wipe_cache = 1; break;
case 'c': wipe_cache = 1; break;
- case 'e': encrypted_fs_mode = optarg; toggle_secure_fs = 1; break;
case 't': ui_show_text(1); break;
case '?':
LOGE("Invalid command argument\n");
@@ -758,43 +732,7 @@ main(int argc, char **argv) {
int status = INSTALL_SUCCESS;
- if (toggle_secure_fs) {
- if (strcmp(encrypted_fs_mode,"on") == 0) {
- encrypted_fs_data.mode = MODE_ENCRYPTED_FS_ENABLED;
- ui_print("Enabling Encrypted FS.\n");
- } else if (strcmp(encrypted_fs_mode,"off") == 0) {
- encrypted_fs_data.mode = MODE_ENCRYPTED_FS_DISABLED;
- ui_print("Disabling Encrypted FS.\n");
- } else {
- ui_print("Error: invalid Encrypted FS setting.\n");
- status = INSTALL_ERROR;
- }
-
- // Recovery strategy: if the data partition is damaged, disable encrypted file systems.
- // This preventsthe device recycling endlessly in recovery mode.
- if ((encrypted_fs_data.mode == MODE_ENCRYPTED_FS_ENABLED) &&
- (read_encrypted_fs_info(&encrypted_fs_data))) {
- ui_print("Encrypted FS change aborted, resetting to disabled state.\n");
- encrypted_fs_data.mode = MODE_ENCRYPTED_FS_DISABLED;
- }
-
- if (status != INSTALL_ERROR) {
- if (erase_volume("/data")) {
- ui_print("Data wipe failed.\n");
- status = INSTALL_ERROR;
- } else if (erase_volume("/cache")) {
- ui_print("Cache wipe failed.\n");
- status = INSTALL_ERROR;
- } else if ((encrypted_fs_data.mode == MODE_ENCRYPTED_FS_ENABLED) &&
- (restore_encrypted_fs_info(&encrypted_fs_data))) {
- ui_print("Encrypted FS change aborted.\n");
- status = INSTALL_ERROR;
- } else {
- ui_print("Successfully updated Encrypted FS.\n");
- status = INSTALL_SUCCESS;
- }
- }
- } else if (update_package != NULL) {
+ if (update_package != NULL) {
status = install_package(update_package);
if (status != INSTALL_SUCCESS) ui_print("Installation aborted.\n");
} else if (wipe_data) {
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-02 07:09:37 +0100