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/*
* Copyright (C) 2010 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.
*
* Additional Copyright (C) 2018 TeamWin
*/
#include <utils/Log.h>
#include <stdio.h>
#include <assert.h>
#include <limits.h>
#include <unistd.h>
#include <fcntl.h>
#include <vector>
#include <utils/threads.h>
#include <pthread.h>
#include <cutils/properties.h>
#include "mtp_MtpServer.hpp"
#include "MtpServer.h"
#include "MtpStorage.h"
#include "MtpDebug.h"
#include "MtpDescriptors.h"
#include "MtpMessage.hpp"
#include "mtp_MtpDatabase.hpp"
#include <string>
void twmtp_MtpServer::set_device_info() {
char property[512];
property_get("ro.build.product", property, "unknown manufacturer");
mtpinfo.deviceInfoManufacturer = MtpStringBuffer(property);
property_get("ro.product.model", property, "unknown model");
mtpinfo.deviceInfoModel = MtpStringBuffer(property);
mtpinfo.deviceInfoDeviceVersion = MtpStringBuffer("None");
property_get("ro.serialno", property, "unknown serial number");
mtpinfo.deviceInfoSerialNumber = MtpStringBuffer(property);
}
void twmtp_MtpServer::start()
{
int controlFd = 0;
usePtp = false;
IMtpDatabase* mtpdb = new IMtpDatabase();
MTPD("launching server\n");
/* Sleep for a bit before we open the MTP USB device because some
* devices are not ready due to the kernel not responding to our
* sysfs requests right away.
*/
usleep(800000);
#ifdef USB_MTP_DEVICE
#define STRINGIFY(x) #x
#define EXPAND(x) STRINGIFY(x)
const char* mtp_device = EXPAND(USB_MTP_DEVICE);
MTPI("Using '%s' for MTP device.\n", EXPAND(USB_MTP_DEVICE));
#else
const char* mtp_device = "/dev/mtp_usb";
#endif
bool ffs_ok = access(FFS_MTP_EP0, W_OK) == 0;
if (ffs_ok) {
MTPD("Opening FFS EPO\n");
controlFd = open(FFS_MTP_EP0, O_RDWR);
} else {
controlFd = open(mtp_device, O_WRONLY);
}
if (controlFd < 0) {
MTPE("could not open MTP driver, errno: %d\n", errno);
return;
}
MTPD("MTP fd: %d\n", controlFd);
server = new MtpServer(mtpdb,\
controlFd,\
usePtp,\
mtpinfo.deviceInfoManufacturer, \
mtpinfo.deviceInfoModel, \
mtpinfo.deviceInfoDeviceVersion, \
mtpinfo.deviceInfoSerialNumber);
refserver = server;
MTPI("created new mtpserver object\n");
add_storage();
MTPD("Starting add / remove mtppipe monitor thread\n");
pthread_t thread;
ThreadPtr mtpptr = &twmtp_MtpServer::mtppipe_thread;
PThreadPtr p = *(PThreadPtr*)&mtpptr;
pthread_create(&thread, NULL, p, this);
// This loop restarts the MTP process if the device is unplugged and replugged in
while (true) {
server->run();
usleep(800000);
}
}
void twmtp_MtpServer::set_storages(storages* mtpstorages) {
stores = mtpstorages;
}
void twmtp_MtpServer::cleanup()
{
android::Mutex sMutex;
android::Mutex::Autolock autoLock(sMutex);
if (server) {
delete server;
} else {
MTPD("server is null in cleanup");
}
}
void twmtp_MtpServer::send_object_added(int handle)
{
android::Mutex sMutex;
android::Mutex::Autolock autoLock(sMutex);
if (server)
server->sendObjectAdded(handle);
else
MTPD("server is null in send_object_added");
}
void twmtp_MtpServer::send_object_removed(int handle)
{
android::Mutex sMutex;
android::Mutex::Autolock autoLock(sMutex);
if (server)
server->sendObjectRemoved(handle);
else
MTPD("server is null in send_object_removed");
}
void twmtp_MtpServer::add_storage()
{
android::Mutex sMutex;
android::Mutex::Autolock autoLock(sMutex);
MTPD("twmtp_MtpServer::add_storage count of storage devices: %i\n", stores->size());
for (unsigned int i = 0; i < stores->size(); ++i) {
std::string pathStr = stores->at(i)->mount;
if (!pathStr.empty()) {
std::string descriptionStr = stores->at(i)->display;
int storageID = stores->at(i)->mtpid;
bool removable = false;
uint64_t maxFileSize = stores->at(i)->maxFileSize;
if (descriptionStr != "") {
MtpStorage* storage = new MtpStorage(storageID, &pathStr[0], &descriptionStr[0], removable, maxFileSize, refserver);
server->addStorage(storage);
}
}
}
}
void twmtp_MtpServer::remove_storage(int storageId)
{
android::Mutex sMutex;
android::Mutex::Autolock autoLock(sMutex);
if (server) {
MtpStorage* storage = server->getStorage(storageId);
if (storage) {
MTPD("twmtp_MtpServer::remove_storage calling removeStorage\n");
server->removeStorage(storage);
}
} else
MTPD("server is null in remove_storage");
MTPD("twmtp_MtpServer::remove_storage DONE\n");
}
int twmtp_MtpServer::mtppipe_thread(void)
{
if (mtp_read_pipe == -1) {
MTPD("mtppipe_thread exiting because mtp_read_pipe not set\n");
return 0;
}
MTPD("Starting twmtp_MtpServer::mtppipe_thread\n");
int read_count;
struct mtpmsg mtp_message;
while (1) {
read_count = ::read(mtp_read_pipe, &mtp_message, sizeof(mtp_message));
MTPD("read %i from mtppipe\n", read_count);
if (read_count == sizeof(mtp_message)) {
if (mtp_message.message_type == MTP_MESSAGE_ADD_STORAGE) {
MTPI("mtppipe add storage %i '%s'\n", mtp_message.storage_id, mtp_message.path);
if (mtp_message.storage_id) {
bool removable = false;
MtpStorage* storage = new MtpStorage(mtp_message.storage_id, &mtp_message.path[0], &mtp_message.display[0], removable, mtp_message.maxFileSize, refserver);
server->addStorage(storage);
MTPD("mtppipe done adding storage\n");
} else {
MTPE("Invalid storage ID %i specified\n", mtp_message.storage_id);
}
} else if (mtp_message.message_type == MTP_MESSAGE_REMOVE_STORAGE) {
MTPI("mtppipe remove storage %i\n", mtp_message.storage_id);
remove_storage(mtp_message.storage_id);
MTPD("mtppipe done removing storage\n");
} else {
MTPE("Unknown mtppipe message value: %i\n", mtp_message.message_type);
}
} else {
MTPE("twmtp_MtpServer::mtppipe_thread unexpected read_count %i\n", read_count);
close(mtp_read_pipe);
break;
}
}
MTPD("twmtp_MtpServer::mtppipe_thread closing\n");
return 0;
}
void twmtp_MtpServer::set_read_pipe(int pipe)
{
mtp_read_pipe = pipe;
}
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