/*
* Copyright (C) 2008 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 <stdlib.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <dirent.h>
#include <errno.h>
#include <fcntl.h>
#include <string.h>
#define LOG_TAG "VoldCmdListener"
#include <cutils/log.h>
#include <sysutils/SocketClient.h>
#include <private/android_filesystem_config.h>
#include "CommandListener.h"
#include "VolumeManager.h"
#include "ResponseCode.h"
#include "Process.h"
#include "Xwarp.h"
#include "Loop.h"
#include "Devmapper.h"
#include "cryptfs.h"
#include "fstrim.h"
#define DUMP_ARGS 0
CommandListener::CommandListener() :
FrameworkListener("vold", true) {
registerCmd(new DumpCmd());
registerCmd(new VolumeCmd());
registerCmd(new AsecCmd());
registerCmd(new ObbCmd());
registerCmd(new StorageCmd());
registerCmd(new XwarpCmd());
registerCmd(new CryptfsCmd());
registerCmd(new FstrimCmd());
}
void CommandListener::dumpArgs(int argc, char **argv, int argObscure) {
#if DUMP_ARGS
char buffer[4096];
char *p = buffer;
memset(buffer, 0, sizeof(buffer));
int i;
for (i = 0; i < argc; i++) {
unsigned int len = strlen(argv[i]) + 1; // Account for space
if (i == argObscure) {
len += 2; // Account for {}
}
if (((p - buffer) + len) < (sizeof(buffer)-1)) {
if (i == argObscure) {
*p++ = '{';
*p++ = '}';
*p++ = ' ';
continue;
}
strcpy(p, argv[i]);
p+= strlen(argv[i]);
if (i != (argc -1)) {
*p++ = ' ';
}
}
}
SLOGD("%s", buffer);
#endif
}
CommandListener::DumpCmd::DumpCmd() :
VoldCommand("dump") {
}
int CommandListener::DumpCmd::runCommand(SocketClient *cli,
int argc, char **argv) {
cli->sendMsg(0, "Dumping loop status", false);
if (Loop::dumpState(cli)) {
cli->sendMsg(ResponseCode::CommandOkay, "Loop dump failed", true);
}
cli->sendMsg(0, "Dumping DM status", false);
if (Devmapper::dumpState(cli)) {
cli->sendMsg(ResponseCode::CommandOkay, "Devmapper dump failed", true);
}
cli->sendMsg(0, "Dumping mounted filesystems", false);
FILE *fp = fopen("/proc/mounts", "r");
if (fp) {
char line[1024];
while (fgets(line, sizeof(line), fp)) {
line[strlen(line)-1] = '\0';
cli->sendMsg(0, line, false);;
}
fclose(fp);
}
cli->sendMsg(ResponseCode::CommandOkay, "dump complete", false);
return 0;
}
CommandListener::VolumeCmd::VolumeCmd() :
VoldCommand("volume") {
}
int CommandListener::VolumeCmd::runCommand(SocketClient *cli,
int argc, char **argv) {
dumpArgs(argc, argv, -1);
if (argc < 2) {
cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing Argument", false);
return 0;
}
VolumeManager *vm = VolumeManager::Instance();
int rc = 0;
if (!strcmp(argv[1], "list")) {
return vm->listVolumes(cli);
} else if (!strcmp(argv[1], "debug")) {
if (argc != 3 || (argc == 3 && (strcmp(argv[2], "off") && strcmp(argv[2], "on")))) {
cli->sendMsg(ResponseCode::CommandSyntaxError, "Usage: volume debug <off/on>", false);
return 0;
}
vm->setDebug(!strcmp(argv[2], "on") ? true : false);
} else if (!strcmp(argv[1], "mount")) {
if (argc != 3) {
cli->sendMsg(ResponseCode::CommandSyntaxError, "Usage: volume mount <path>", false);
return 0;
}
rc = vm->mountVolume(argv[2]);
} else if (!strcmp(argv[1], "unmount")) {
if (argc < 3 || argc > 4 ||
((argc == 4 && strcmp(argv[3], "force")) &&
(argc == 4 && strcmp(argv[3], "force_and_revert")))) {
cli->sendMsg(ResponseCode::CommandSyntaxError, "Usage: volume unmount <path> [force|force_and_revert]", false);
return 0;
}
bool force = false;
bool revert = false;
if (argc >= 4 && !strcmp(argv[3], "force")) {
force = true;
} else if (argc >= 4 && !strcmp(argv[3], "force_and_revert")) {
force = true;
revert = true;
}
rc = vm->unmountVolume(argv[2], force, revert);
} else if (!strcmp(argv[1], "format")) {
if (argc != 3) {
cli->sendMsg(ResponseCode::CommandSyntaxError, "Usage: volume format <path>", false);
return 0;
}
rc = vm->formatVolume(argv[2]);
} else if (!strcmp(argv[1], "share")) {
if (argc != 4) {
cli->sendMsg(ResponseCode::CommandSyntaxError,
"Usage: volume share <path> <method>", false);
return 0;
}
rc = vm->shareVolume(argv[2], argv[3]);
} else if (!strcmp(argv[1], "unshare")) {
if (argc != 4) {
cli->sendMsg(ResponseCode::CommandSyntaxError,
"Usage: volume unshare <path> <method>", false);
return 0;
}
rc = vm->unshareVolume(argv[2], argv[3]);
} else if (!strcmp(argv[1], "shared")) {
bool enabled = false;
if (argc != 4) {
cli->sendMsg(ResponseCode::CommandSyntaxError,
"Usage: volume shared <path> <method>", false);
return 0;
}
if (vm->shareEnabled(argv[2], argv[3], &enabled)) {
cli->sendMsg(
ResponseCode::OperationFailed, "Failed to determine share enable state", true);
} else {
cli->sendMsg(ResponseCode::ShareEnabledResult,
(enabled ? "Share enabled" : "Share disabled"), false);
}
return 0;
} else {
cli->sendMsg(ResponseCode::CommandSyntaxError, "Unknown volume cmd", false);
}
if (!rc) {
cli->sendMsg(ResponseCode::CommandOkay, "volume operation succeeded", false);
} else {
int erno = errno;
rc = ResponseCode::convertFromErrno();
cli->sendMsg(rc, "volume operation failed", true);
}
return 0;
}
CommandListener::StorageCmd::StorageCmd() :
VoldCommand("storage") {
}
int CommandListener::StorageCmd::runCommand(SocketClient *cli,
int argc, char **argv) {
dumpArgs(argc, argv, -1);
if (argc < 2) {
cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing Argument", false);
return 0;
}
if (!strcmp(argv[1], "users")) {
DIR *dir;
struct dirent *de;
if (!(dir = opendir("/proc"))) {
cli->sendMsg(ResponseCode::OperationFailed, "Failed to open /proc", true);
return 0;
}
while ((de = readdir(dir))) {
int pid = Process::getPid(de->d_name);
if (pid < 0) {
continue;
}
char processName[255];
Process::getProcessName(pid, processName, sizeof(processName));
if (Process::checkFileDescriptorSymLinks(pid, argv[2]) ||
Process::checkFileMaps(pid, argv[2]) ||
Process::checkSymLink(pid, argv[2], "cwd") ||
Process::checkSymLink(pid, argv[2], "root") ||
Process::checkSymLink(pid, argv[2], "exe")) {
char msg[1024];
snprintf(msg, sizeof(msg), "%d %s", pid, processName);
cli->sendMsg(ResponseCode::StorageUsersListResult, msg, false);
}
}
closedir(dir);
cli->sendMsg(ResponseCode::CommandOkay, "Storage user list complete", false);
} else {
cli->sendMsg(ResponseCode::CommandSyntaxError, "Unknown storage cmd", false);
}
return 0;
}
CommandListener::AsecCmd::AsecCmd() :
VoldCommand("asec") {
}
void CommandListener::AsecCmd::listAsecsInDirectory(SocketClient *cli, const char *directory) {
DIR *d = opendir(directory);
if (!d) {
cli->sendMsg(ResponseCode::OperationFailed, "Failed to open asec dir", true);
return;
}
size_t dirent_len = offsetof(struct dirent, d_name) +
fpathconf(dirfd(d), _PC_NAME_MAX) + 1;
struct dirent *dent = (struct dirent *) malloc(dirent_len);
if (dent == NULL) {
cli->sendMsg(ResponseCode::OperationFailed, "Failed to allocate memory", true);
return;
}
struct dirent *result;
while (!readdir_r(d, dent, &result) && result != NULL) {
if (dent->d_name[0] == '.')
continue;
if (dent->d_type != DT_REG)
continue;
size_t name_len = strlen(dent->d_name);
if (name_len > 5 && name_len < 260 &&
!strcmp(&dent->d_name[name_len - 5], ".asec")) {
char id[255];
memset(id, 0, sizeof(id));
strlcpy(id, dent->d_name, name_len - 4);
cli->sendMsg(ResponseCode::AsecListResult, id, false);
}
}
closedir(d);
free(dent);
}
int CommandListener::AsecCmd::runCommand(SocketClient *cli,
int argc, char **argv) {
if (argc < 2) {
cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing Argument", false);
return 0;
}
VolumeManager *vm = VolumeManager::Instance();
int rc = 0;
if (!strcmp(argv[1], "list")) {
dumpArgs(argc, argv, -1);
listAsecsInDirectory(cli, Volume::SEC_ASECDIR_EXT);
listAsecsInDirectory(cli, Volume::SEC_ASECDIR_INT);
} else if (!strcmp(argv[1], "create")) {
dumpArgs(argc, argv, 5);
if (argc != 8) {
cli->sendMsg(ResponseCode::CommandSyntaxError,
"Usage: asec create <container-id> <size_mb> <fstype> <key> <ownerUid> "
"<isExternal>", false);
return 0;
}
unsigned int numSectors = (atoi(argv[3]) * (1024 * 1024)) / 512;
const bool isExternal = (atoi(argv[7]) == 1);
rc = vm->createAsec(argv[2], numSectors, argv[4], argv[5], atoi(argv[6]), isExternal);
} else if (!strcmp(argv[1], "finalize")) {
dumpArgs(argc, argv, -1);
if (argc != 3) {
cli->sendMsg(ResponseCode::CommandSyntaxError, "Usage: asec finalize <container-id>", false);
return 0;
}
rc = vm->finalizeAsec(argv[2]);
} else if (!strcmp(argv[1], "fixperms")) {
dumpArgs(argc, argv, -1);
if (argc != 5) {
cli->sendMsg(ResponseCode::CommandSyntaxError, "Usage: asec fixperms <container-id> <gid> <filename>", false);
return 0;
}
char *endptr;
gid_t gid = (gid_t) strtoul(argv[3], &endptr, 10);
if (*endptr != '\0') {
cli->sendMsg(ResponseCode::CommandSyntaxError, "Usage: asec fixperms <container-id> <gid> <filename>", false);
return 0;
}
rc = vm->fixupAsecPermissions(argv[2], gid, argv[4]);
} else if (!strcmp(argv[1], "destroy")) {
dumpArgs(argc, argv, -1);
if (argc < 3) {
cli->sendMsg(ResponseCode::CommandSyntaxError, "Usage: asec destroy <container-id> [force]", false);
return 0;
}
bool force = false;
if (argc > 3 && !strcmp(argv[3], "force")) {
force = true;
}
rc = vm->destroyAsec(argv[2], force);
} else if (!strcmp(argv[1], "mount")) {
dumpArgs(argc, argv, 3);
if (argc != 5) {
cli->sendMsg(ResponseCode::CommandSyntaxError,
"Usage: asec mount <namespace-id> <key> <ownerUid>", false);
return 0;
}
rc = vm->mountAsec(argv[2], argv[3], atoi(argv[4]));
} else if (!strcmp(argv[1], "unmount")) {
dumpArgs(argc, argv, -1);
if (argc < 3) {
cli->sendMsg(ResponseCode::CommandSyntaxError, "Usage: asec unmount <container-id> [force]", false);
return 0;
}
bool force = false;
if (argc > 3 && !strcmp(argv[3], "force")) {
force = true;
}
rc = vm->unmountAsec(argv[2], force);
} else if (!strcmp(argv[1], "rename")) {
dumpArgs(argc, argv, -1);
if (argc != 4) {
cli->sendMsg(ResponseCode::CommandSyntaxError,
"Usage: asec rename <old_id> <new_id>", false);
return 0;
}
rc = vm->renameAsec(argv[2], argv[3]);
} else if (!strcmp(argv[1], "path")) {
dumpArgs(argc, argv, -1);
if (argc != 3) {
cli->sendMsg(ResponseCode::CommandSyntaxError, "Usage: asec path <container-id>", false);
return 0;
}
char path[255];
if (!(rc = vm->getAsecMountPath(argv[2], path, sizeof(path)))) {
cli->sendMsg(ResponseCode::AsecPathResult, path, false);
return 0;
}
} else if (!strcmp(argv[1], "fspath")) {
dumpArgs(argc, argv, -1);
if (argc != 3) {
cli->sendMsg(ResponseCode::CommandSyntaxError, "Usage: asec fspath <container-id>", false);
return 0;
}
char path[255];
if (!(rc = vm->getAsecFilesystemPath(argv[2], path, sizeof(path)))) {
cli->sendMsg(ResponseCode::AsecPathResult, path, false);
return 0;
}
} else {
dumpArgs(argc, argv, -1);
cli->sendMsg(ResponseCode::CommandSyntaxError, "Unknown asec cmd", false);
}
if (!rc) {
cli->sendMsg(ResponseCode::CommandOkay, "asec operation succeeded", false);
} else {
rc = ResponseCode::convertFromErrno();
cli->sendMsg(rc, "asec operation failed", true);
}
return 0;
}
CommandListener::ObbCmd::ObbCmd() :
VoldCommand("obb") {
}
int CommandListener::ObbCmd::runCommand(SocketClient *cli,
int argc, char **argv) {
if (argc < 2) {
cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing Argument", false);
return 0;
}
VolumeManager *vm = VolumeManager::Instance();
int rc = 0;
if (!strcmp(argv[1], "list")) {
dumpArgs(argc, argv, -1);
rc = vm->listMountedObbs(cli);
} else if (!strcmp(argv[1], "mount")) {
dumpArgs(argc, argv, 3);
if (argc != 5) {
cli->sendMsg(ResponseCode::CommandSyntaxError,
"Usage: obb mount <filename> <key> <ownerGid>", false);
return 0;
}
rc = vm->mountObb(argv[2], argv[3], atoi(argv[4]));
} else if (!strcmp(argv[1], "unmount")) {
dumpArgs(argc, argv, -1);
if (argc < 3) {
cli->sendMsg(ResponseCode::CommandSyntaxError, "Usage: obb unmount <source file> [force]", false);
return 0;
}
bool force = false;
if (argc > 3 && !strcmp(argv[3], "force")) {
force = true;
}
rc = vm->unmountObb(argv[2], force);
} else if (!strcmp(argv[1], "path")) {
dumpArgs(argc, argv, -1);
if (argc != 3) {
cli->sendMsg(ResponseCode::CommandSyntaxError, "Usage: obb path <source file>", false);
return 0;
}
char path[255];
if (!(rc = vm->getObbMountPath(argv[2], path, sizeof(path)))) {
cli->sendMsg(ResponseCode::AsecPathResult, path, false);
return 0;
}
} else {
dumpArgs(argc, argv, -1);
cli->sendMsg(ResponseCode::CommandSyntaxError, "Unknown obb cmd", false);
}
if (!rc) {
cli->sendMsg(ResponseCode::CommandOkay, "obb operation succeeded", false);
} else {
rc = ResponseCode::convertFromErrno();
cli->sendMsg(rc, "obb operation failed", true);
}
return 0;
}
CommandListener::XwarpCmd::XwarpCmd() :
VoldCommand("xwarp") {
}
int CommandListener::XwarpCmd::runCommand(SocketClient *cli,
int argc, char **argv) {
if (argc < 2) {
cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing Argument", false);
return 0;
}
if (!strcmp(argv[1], "enable")) {
if (Xwarp::enable()) {
cli->sendMsg(ResponseCode::OperationFailed, "Failed to enable xwarp", true);
return 0;
}
cli->sendMsg(ResponseCode::CommandOkay, "Xwarp mirroring started", false);
} else if (!strcmp(argv[1], "disable")) {
if (Xwarp::disable()) {
cli->sendMsg(ResponseCode::OperationFailed, "Failed to disable xwarp", true);
return 0;
}
cli->sendMsg(ResponseCode::CommandOkay, "Xwarp disabled", false);
} else if (!strcmp(argv[1], "status")) {
char msg[255];
bool r;
unsigned mirrorPos, maxSize;
if (Xwarp::status(&r, &mirrorPos, &maxSize)) {
cli->sendMsg(ResponseCode::OperationFailed, "Failed to get xwarp status", true);
return 0;
}
snprintf(msg, sizeof(msg), "%s %u %u", (r ? "ready" : "not-ready"), mirrorPos, maxSize);
cli->sendMsg(ResponseCode::XwarpStatusResult, msg, false);
} else {
cli->sendMsg(ResponseCode::CommandSyntaxError, "Unknown storage cmd", false);
}
return 0;
}
CommandListener::CryptfsCmd::CryptfsCmd() :
VoldCommand("cryptfs") {
}
int CommandListener::CryptfsCmd::runCommand(SocketClient *cli,
int argc, char **argv) {
if ((cli->getUid() != 0) && (cli->getUid() != AID_SYSTEM)) {
cli->sendMsg(ResponseCode::CommandNoPermission, "No permission to run cryptfs commands", false);
return 0;
}
if (argc < 2) {
cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing Argument", false);
return 0;
}
int rc = 0;
if (!strcmp(argv[1], "checkpw")) {
if (argc != 3) {
cli->sendMsg(ResponseCode::CommandSyntaxError, "Usage: cryptfs checkpw <passwd>", false);
return 0;
}
dumpArgs(argc, argv, 2);
rc = cryptfs_check_passwd(argv[2]);
} else if (!strcmp(argv[1], "restart")) {
if (argc != 2) {
cli->sendMsg(ResponseCode::CommandSyntaxError, "Usage: cryptfs restart", false);
return 0;
}
dumpArgs(argc, argv, -1);
rc = cryptfs_restart();
} else if (!strcmp(argv[1], "cryptocomplete")) {
if (argc != 2) {
cli->sendMsg(ResponseCode::CommandSyntaxError, "Usage: cryptfs cryptocomplete", false);
return 0;
}
dumpArgs(argc, argv, -1);
rc = cryptfs_crypto_complete();
} else if (!strcmp(argv[1], "enablecrypto")) {
if ( (argc != 4) || (strcmp(argv[2], "wipe") && strcmp(argv[2], "inplace")) ) {
cli->sendMsg(ResponseCode::CommandSyntaxError, "Usage: cryptfs enablecrypto <wipe|inplace> <passwd>", false);
return 0;
}
dumpArgs(argc, argv, 3);
rc = cryptfs_enable(argv[2], argv[3]);
} else if (!strcmp(argv[1], "changepw")) {
if (argc != 3) {
cli->sendMsg(ResponseCode::CommandSyntaxError, "Usage: cryptfs changepw <newpasswd>", false);
return 0;
}
SLOGD("cryptfs changepw {}");
rc = cryptfs_changepw(argv[2]);
} else if (!strcmp(argv[1], "verifypw")) {
if (argc != 3) {
cli->sendMsg(ResponseCode::CommandSyntaxError, "Usage: cryptfs verifypw <passwd>", false);
return 0;
}
SLOGD("cryptfs verifypw {}");
rc = cryptfs_verify_passwd(argv[2]);
} else {
dumpArgs(argc, argv, -1);
cli->sendMsg(ResponseCode::CommandSyntaxError, "Unknown cryptfs cmd", false);
}
// Always report that the command succeeded and return the error code.
// The caller will check the return value to see what the error was.
char msg[255];
snprintf(msg, sizeof(msg), "%d", rc);
cli->sendMsg(ResponseCode::CommandOkay, msg, false);
return 0;
}
CommandListener::FstrimCmd::FstrimCmd() :
VoldCommand("fstrim") {
}
int CommandListener::FstrimCmd::runCommand(SocketClient *cli,
int argc, char **argv) {
if ((cli->getUid() != 0) && (cli->getUid() != AID_SYSTEM)) {
cli->sendMsg(ResponseCode::CommandNoPermission, "No permission to run fstrim commands", false);
return 0;
}
if (argc < 2) {
cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing Argument", false);
return 0;
}
int rc = 0;
if (!strcmp(argv[1], "dotrim")) {
if (argc != 2) {
cli->sendMsg(ResponseCode::CommandSyntaxError, "Usage: fstrim dotrim", false);
return 0;
}
dumpArgs(argc, argv, -1);
rc = fstrim_filesystems();
} else {
dumpArgs(argc, argv, -1);
cli->sendMsg(ResponseCode::CommandSyntaxError, "Unknown fstrim cmd", false);
}
// Always report that the command succeeded and return the error code.
// The caller will check the return value to see what the error was.
char msg[255];
snprintf(msg, sizeof(msg), "%d", rc);
cli->sendMsg(ResponseCode::CommandOkay, msg, false);
return 0;
}