/*
* 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.
*
* Copyright (C) 2014 TeamWin - bigbiff and Dees_Troy mtp database conversion to C++
*/
#include "MtpDebug.h"
#include "MtpStorage.h"
#include "MtpDataPacket.h"
#include "MtpServer.h"
#include "MtpEventPacket.h"
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/statfs.h>
#include <unistd.h>
#include <dirent.h>
#include <errno.h>
#include <string.h>
#include <stdio.h>
#include <limits.h>
#include <pthread.h>
#include <signal.h>
#include <sys/inotify.h>
#include <fcntl.h>
#include <sstream>
#define WATCH_FLAGS ( IN_CREATE | IN_DELETE | IN_MOVE | IN_MODIFY )
static int mtpid = 0;
MtpStorage::MtpStorage(MtpStorageID id, const char* filePath,
const char* description, uint64_t reserveSpace,
bool removable, uint64_t maxFileSize, MtpServer* refserver)
: mStorageID(id),
mFilePath(filePath),
mDescription(description),
mMaxCapacity(0),
mMaxFileSize(maxFileSize),
mReserveSpace(reserveSpace),
mRemovable(removable),
mServer(refserver)
{
MTPI("MtpStorage id: %d path: %s\n", id, filePath);
mtpparentid = 0;
inotify_thread = 0;
sendEvents = false;
use_mutex = true;
if (pthread_mutex_init(&mtpMutex, NULL) != 0) {
MTPE("Failed to init mtpMutex\n");
use_mutex = false;
}
if (pthread_mutex_init(&inMutex, NULL) != 0) {
MTPE("Failed to init inMutex\n");
use_mutex = false;
}
}
MtpStorage::~MtpStorage() {
if (inotify_thread) {
pthread_kill(inotify_thread, 0);
for (std::map<int, std::string>::iterator i = inotifymap.begin(); i != inotifymap.end(); i++) {
inotify_rm_watch(inotify_fd, i->first);
}
close(inotify_fd);
}
for (iter i = mtpmap.begin(); i != mtpmap.end(); i++) {
delete i->second;
}
if (use_mutex) {
use_mutex = false;
pthread_mutex_destroy(&mtpMutex);
pthread_mutex_destroy(&inMutex);
}
}
int MtpStorage::getType() const {
return (mRemovable ? MTP_STORAGE_REMOVABLE_RAM : MTP_STORAGE_FIXED_RAM);
}
int MtpStorage::getFileSystemType() const {
return MTP_STORAGE_FILESYSTEM_HIERARCHICAL;
}
int MtpStorage::getAccessCapability() const {
return MTP_STORAGE_READ_WRITE;
}
uint64_t MtpStorage::getMaxCapacity() {
if (mMaxCapacity == 0) {
struct statfs stat;
if (statfs(getPath(), &stat))
return -1;
mMaxCapacity = (uint64_t)stat.f_blocks * (uint64_t)stat.f_bsize;
}
return mMaxCapacity;
}
uint64_t MtpStorage::getFreeSpace() {
struct statfs stat;
if (statfs(getPath(), &stat))
return -1;
uint64_t freeSpace = (uint64_t)stat.f_bavail * (uint64_t)stat.f_bsize;
return (freeSpace > mReserveSpace ? freeSpace - mReserveSpace : 0);
}
const char* MtpStorage::getDescription() const {
return (const char *)mDescription;
}
int MtpStorage::createDB() {
std::string mtpParent = "";
mtpstorageparent = getPath();
readParentDirs(getPath());
while (!mtpParentList.empty()) {
mtpParent = mtpParentList.front();
mtpParentList.pop_front();
readParentDirs(mtpParent);
}
MTPD("MtpStorage::createDB DONE\n");
if (use_mutex) {
MTPD("Starting inotify thread\n");
sendEvents = true;
inotify_thread = inotify();
} else {
MTPD("NOT starting inotify thread\n");
}
return 0;
}
MtpObjectHandleList* MtpStorage::getObjectList(MtpStorageID storageID, MtpObjectHandle parent) {
std::vector<int> mtpids;
int local_mtpparentid;
MTPD("MtpStorage::getObjectList\n");
MTPD("parent: %d\n", parent);
//append object id (numerical #s) of database to int array
MtpObjectHandleList* list = new MtpObjectHandleList();
if (parent == MTP_PARENT_ROOT) {
MTPD("parent == MTP_PARENT_ROOT\n");
local_mtpparentid = 1;
}
else {
for (iter i = mtpmap.begin(); i != mtpmap.end(); ++i) {
MTPD("root: %d\n", i->second->Root());
Node* node = i->second->findNode(parent, i->second->Root());
if (node != NULL) {
local_mtpparentid = i->second->getMtpParentId(node);
MTPD("path: %s\n", i->second->getPath(node).c_str());
MTPD("mtpparentid: %d going to endloop\n", local_mtpparentid);
goto endloop;
}
}
}
MTPD("got to endloop\n");
endloop:
if (mtpmap[local_mtpparentid] == NULL) {
MTPD("mtpmap[mtpparentid] == NULL, returning\n");
return list;
}
MTPD("root: %d\n", mtpmap[local_mtpparentid]->Root());
mtpmap[local_mtpparentid]->getmtpids(mtpmap[local_mtpparentid]->Root(), &mtpids);
MTPD("here, mtpids->size(): %i\n", mtpids.size());
for (unsigned index = 0; index < mtpids.size(); index++) {
MTPD("mtpidhere[%i]: %d\n", index, mtpids.at(index));
list->push(mtpids.at(index));
}
return list;
}
int MtpStorage::getObjectInfo(MtpObjectHandle handle, MtpObjectInfo& info) {
struct stat st;
uint64_t size = 0;
MTPD("MtpStorage::getObjectInfo handle: %d\n", handle);
for (iter i = mtpmap.begin(); i != mtpmap.end(); i++) {
Node* node = i->second->findNode(handle, i->second->Root());
MTPD("node returned: %d\n", node);
if (node != NULL) {
MTPD("found mtpid: %d\n", node->Mtpid());
info.mStorageID = getStorageID();
MTPD("info.mStorageID: %d\n", info.mStorageID);
info.mParent = node->getMtpParentId();
MTPD("mParent: %d\n", info.mParent);
if (lstat(node->getPath().c_str(), &st) == 0)
size = st.st_size;
MTPD("size is: %llu\n", size);
info.mCompressedSize = size;//(size > 0xFFFFFFFFLL ? 0xFFFFFFFF : size);
info.mDateModified = st.st_mtime;
if (S_ISDIR(st.st_mode)) {
info.mFormat = MTP_FORMAT_ASSOCIATION;
}
else {
info.mFormat = MTP_FORMAT_UNDEFINED;
}
info.mName = strdup(basename(node->getPath().c_str()));
MTPD("MtpStorage::getObjectInfo found, Exiting getObjectInfo()\n");
return 0;
}
}
// Item is not on this storage device
return -1;
}
MtpObjectHandle MtpStorage::beginSendObject(const char* path,
MtpObjectFormat format,
MtpObjectHandle parent,
MtpStorageID storage,
uint64_t size,
time_t modified) {
MTPD("MtpStorage::beginSendObject(), path: '%s', parent: %d, storage: %d, format: %04x\n", path, parent, storage, format);
Node* node;
std::string parentdir;
std::string pathstr(path);
int parent_id;
parentdir = pathstr.substr(0, pathstr.find_last_of('/'));
MTPD("MtpStorage::beginSendObject() parentdir: %s\n", parentdir.c_str());
if (parentdir.compare(mtpstorageparent) == 0) {
// root directory
MTPD("MtpStorage::beginSendObject() root dir\n");
parent_id = 1;
++mtpid;
node = mtpmap[parent_id]->addNode(mtpid, path);
MTPD("node: %d\n", node);
node->addProperties(storage, 0);
if (format == MTP_FORMAT_ASSOCIATION) {
createEmptyDir(path);
}
return mtpid;
} else {
for (iter i = mtpmap.begin(); i != mtpmap.end(); i++) {
node = i->second->findNodePath(parentdir, i->second->Root());
if (node != NULL) {
MTPD("mtpid: %d\n", mtpid);
MTPD("path: %s\n", i->second->getPath(node).c_str());
parentdir = i->second->getPath(node);
parent = i->second->getMtpParentId(node);
if (parent == 0) {
MTPD("MtpStorage::beginSendObject parent is 0, error.\n");
return -1;
} else {
++mtpid;
node = mtpmap[parent]->addNode(mtpid, path);
node->addProperties(getStorageID(), getParentObject(parentdir));
for (iter i2 = mtpmap.begin(); i2 != mtpmap.end(); i2++) {
node = i2->second->findNodePath(path, i2->second->Root());
if (node != NULL) {
i2->second->setMtpParentId(parent, node);
}
}
if (format == MTP_FORMAT_ASSOCIATION) {
createEmptyDir(path);
}
}
return mtpid;
}
}
}
MTPE("MtpStorage::beginSendObject(), path: '%s', parent: %d, storage: %d, format: %04x\n", path, parent, storage, format);
return -1;
}
int MtpStorage::getObjectFilePath(MtpObjectHandle handle, MtpString& outFilePath, int64_t& outFileLength, MtpObjectFormat& outFormat) {
struct stat st;
Node* node;
MTPD("MtpStorage::getObjectFilePath handle: %i\n", handle);
for (iter i = mtpmap.begin(); i != mtpmap.end(); i++) {
MTPD("handle: %d\n", handle);
node = i->second->findNode(handle, i->second->Root());
MTPD("node returned: %d\n", node);
if (node != NULL) {
if (lstat(node->getPath().c_str(), &st) == 0)
outFileLength = st.st_size;
else
outFileLength = 0;
outFilePath = strdup(node->getPath().c_str());
MTPD("outFilePath: %s\n", node->getPath().c_str());
goto end;
}
}
// Item is not on this storage
return -1;
end:
outFormat = MTP_FORMAT_ASSOCIATION;
return 0;
}
int MtpStorage::readParentDirs(std::string path) {
struct dirent *de;
struct stat st;
DIR *d;
std::string parent, item, prevparent = "";
Node* node;
int storageID = getStorageID();
d = opendir(path.c_str());
MTPD("opening '%s'\n", path.c_str());
if (d == NULL) {
MTPD("error opening '%s' -- error: %s\n", path.c_str(), strerror(errno));
closedir(d);
}
while ((de = readdir(d)) != NULL) {
// Because exfat-fuse causes issues with dirent, we will use stat
// for some things that dirent should be able to do
item = path + "/" + de->d_name;
if (lstat(item.c_str(), &st)) {
MTPE("Error running lstat on '%s'\n", item.c_str());
return -1;
}
if ((st.st_mode & S_IFDIR) && strcmp(de->d_name, ".") == 0)
continue;
if ((st.st_mode & S_IFDIR) && strcmp(de->d_name, "..") != 0) {
// Handle dirs
MTPD("dir: %s\n", item.c_str());
mtpParentList.push_back(item);
parent = item.substr(0, item.find_last_of('/'));
++mtpid;
MTPD("parent: %s\n", parent.c_str());
MTPD("mtpid: %d\n", mtpid);
if (prevparent != parent) {
mtpparentid++;
MTPD("Handle dirs, prevparent != parent, mtpparentid: %d\n", mtpparentid);
mtpmap[mtpparentid] = new Tree();
MTPD("prevparent addNode\n");
for (iter i = mtpmap.begin(); i != mtpmap.end(); ++i) {
node = i->second->findNodePath(parent, i->second->Root());
if (node != NULL) {
i->second->setMtpParentId(mtpparentid, node);
}
}
node = mtpmap[mtpparentid]->addNode(mtpid, item);
node->addProperties(storageID, getParentObject(path));
if (sendEvents)
mServer->sendObjectAdded(mtpid);
}
else {
MTPD("add node\n");
mtpmap[mtpparentid]->addNode(mtpid, item);
for (iter i = mtpmap.begin(); i != mtpmap.end(); ++i) {
node = i->second->findNodePath(item, i->second->Root());
if (node != NULL) {
i->second->setMtpParentId(mtpparentid, node);
node->addProperties(storageID, getParentObject(path));
}
}
if (sendEvents)
mServer->sendObjectAdded(mtpid);
}
prevparent = parent;
}
else {
if (strcmp(de->d_name, "..") != 0) {
// Handle files
item = path + "/" + de->d_name;
MTPD("file: %s\n", item.c_str());
parent = item.substr(0, item.find_last_of('/'));
MTPD("parent: %s\n", parent.c_str());
++mtpid;
MTPD("mtpid: %d\n", mtpid);
if (prevparent != parent) {
mtpparentid++;
MTPD("mtpparentid1: %d\n", mtpparentid);
for (iter i = mtpmap.begin(); i != mtpmap.end(); ++i) {
node = i->second->findNodePath(path, i->second->Root());
if (node != NULL) {
i->second->setMtpParentId(mtpparentid, node);
node->addProperties(storageID, getParentObject(path));
}
}
}
if (mtpmap[mtpparentid] == NULL) {
mtpmap[mtpparentid] = new Tree();
}
MTPD("blank addNode\n");
node = mtpmap[mtpparentid]->addNode(mtpid, item);
node->addProperties(storageID, getParentObject(path));
prevparent = parent;
if (sendEvents)
mServer->sendObjectAdded(mtpid);
}
else {
// Handle empty dirs?
MTPD("checking for empty dir '%s'\n", path.c_str());
int count = 0;
DIR *dirc;
struct dirent *ep;
dirc = opendir(path.c_str());
if (dirc != NULL) {
while ((ep = readdir(dirc)))
++count;
MTPD("count: %d\n", count);
closedir(dirc);
}
if (count == 2) {
MTPD("'%s' is an empty dir\n", path.c_str());
createEmptyDir(path.c_str());
goto end;
}
}
}
}
end:
closedir(d);
return 0;
}
void MtpStorage::deleteTrees(int parent) {
Node* node = mtpmap[parent]->Root();
MTPD("MtpStorage::deleteTrees deleting %i\n", parent);
while (node != NULL) {
if (node->getIntProperty(MTP_PROPERTY_OBJECT_FORMAT) == MTP_FORMAT_ASSOCIATION) {
deleteTrees(node->getMtpParentId());
}
node = mtpmap[parent]->getNext(node);
}
delete mtpmap[parent];
mtpmap.erase(parent);
MTPD("MtpStorage::deleteTrees deleted %i\n", parent);
}
int MtpStorage::deleteFile(MtpObjectHandle handle) {
int local_parent_id = 0;
for (iter i = mtpmap.begin(); i != mtpmap.end(); i++) {
MTPD("MtpStorage::deleteFile handle: %d\n", handle);
Node* node = i->second->findNode(handle, i->second->Root());
MTPD("MtpStorage::deleteFile node returned: %d\n", node);
if (node != NULL) {
if (node->getIntProperty(MTP_PROPERTY_OBJECT_FORMAT) == MTP_FORMAT_ASSOCIATION) {
local_parent_id = node->getMtpParentId();
}
MTPD("deleting handle: %d\n", handle);
i->second->deleteNode(handle);
MTPD("deleted\n");
goto end;
}
}
return -1;
end:
if (local_parent_id) {
deleteTrees(local_parent_id);
}
return 0;
}
int MtpStorage::getObjectPropertyList(MtpObjectHandle handle, uint32_t format, uint32_t property, int groupCode, int depth, MtpDataPacket& packet) {
Node *n;
int local_mtpid = 0;
int local_mtpparentid = 0;
std::vector<int> propertyCodes;
std::vector<int> dataTypes;
std::vector<std::string> valueStrs;
std::vector<int> longValues;
int count = 0;
MTPD("MtpStorage::getObjectPropertyList handle: %d, format: %d, property: %lx\n", handle, format, property);
if (property == MTP_PROPERTY_OBJECT_FORMAT) {
MTPD("MtpStorage::getObjectPropertyList MTP_PROPERTY_OBJECT_FORMAT\n");
for (iter i = mtpmap.begin(); i != mtpmap.end(); i++) {
MTPD("root: %d\n", i->second->Root());
Node *node = i->second->findNode(handle, i->second->Root());
MTPD("index: %d\n", index);
MTPD("node: %d\n", node);
if (node != NULL) {
uint64_t longval = node->getIntProperty(MTP_PROPERTY_OBJECT_FORMAT);
local_mtpparentid = i->second->getMtpParentId(node);
MTPD("object format longValue: %llu\n", longval);
propertyCodes.push_back(MTP_PROPERTY_OBJECT_FORMAT);
longValues.push_back(node->getIntProperty(MTP_PROPERTY_OBJECT_FORMAT));
valueStrs.push_back("");
dataTypes.push_back(4);
count = 1;
local_mtpid = node->Mtpid();
goto endloop;
}
}
}
else if (property == MTP_PROPERTY_STORAGE_ID) {
MTPD("MtpStorage::getObjectPropertyList MTP_PROPERTY_STORAGE_ID\n");
for (iter i = mtpmap.begin(); i != mtpmap.end(); i++) {
MTPD("root: %d\n", i->second->Root());
Node *node = i->second->findNode(handle, i->second->Root());
if (node != NULL) {
propertyCodes.push_back(MTP_PROPERTY_STORAGE_ID);
longValues.push_back(getStorageID());
valueStrs.push_back("");
dataTypes.push_back(4);
count = 1;
local_mtpid = node->Mtpid();
goto endloop;
}
}
}
else if (property == MTP_PARENT_ROOT) {
MTPD("MtpStorage::getObjectPropertyList MTP_PARENT_ROOT\n");
for (iter i = mtpmap.begin(); i != mtpmap.end(); i++) {
MTPD("root: %d\n", i->second->Root());
Node* node = i->second->findNode(handle, i->second->Root());
if (node != NULL) {
local_mtpparentid = i->second->getMtpParentId(node);
MTPD("path: %s\n", i->second->getPath(node).c_str());
MTPD("mtpparentid: %d going to endloop\n", local_mtpparentid);
std::vector<Node::mtpProperty> mtpprop = node->getMtpProps();
count = mtpprop.size();
for (int i = 0; i < count; ++i) {
propertyCodes.push_back(mtpprop[i].property);
longValues.push_back(mtpprop[i].valueInt);
valueStrs.push_back(mtpprop[i].valueStr);
dataTypes.push_back(mtpprop[i].dataType);
}
local_mtpid = node->Mtpid();
goto endloop;
}
}
}
else if (property == MTP_PROPERTY_PROTECTION_STATUS) {
MTPD("MtpStorage::getObjectPropertyList MTP_PROPERTY_PROTECTION_STATUS\n");
for (iter i = mtpmap.begin(); i != mtpmap.end(); i++) {
MTPD("root: %d\n", i->second->Root());
Node *node = i->second->findNode(handle, i->second->Root());
if (node != NULL) {
propertyCodes.push_back(MTP_PROPERTY_PROTECTION_STATUS);
longValues.push_back(0);
valueStrs.push_back("");
dataTypes.push_back(8);
count = 1;
local_mtpid = node->Mtpid();
goto endloop;
}
}
}
else if (property == MTP_PROPERTY_OBJECT_SIZE) {
MTPD("MtpStorage::getObjectPropertyList MTP_PROPERTY_OBJECT_SIZE\n");
for (iter i = mtpmap.begin(); i != mtpmap.end(); i++) {
MTPD("root: %d\n", i->second->Root());
Node *node = i->second->findNode(handle, i->second->Root());
if (node != NULL) {
struct stat st;
uint64_t size = 0;
if (lstat(node->getPath().c_str(), &st) == 0)
size = st.st_size;
propertyCodes.push_back(MTP_PROPERTY_OBJECT_SIZE);
longValues.push_back(size);
valueStrs.push_back("");
dataTypes.push_back(8);
count = 1;
local_mtpid = node->Mtpid();
goto endloop;
}
}
}
else {
// Either the property is not supported or the handle is not on this storage
return -1;
}
// handle not found on this storage
return -1;
endloop:
MTPD("mtpparentid: %d\n", local_mtpparentid);
MTPD("count: %d\n", count);
packet.putUInt32(count);
if (count > 0) {
std::string stringValuesArray;
for (int i = 0; i < count; ++i) {
packet.putUInt32(local_mtpid);
packet.putUInt16(propertyCodes[i]);
MTPD("dataTypes: %d\n", dataTypes[i]);
packet.putUInt16(dataTypes[i]);
MTPD("propertyCode: %s\n", MtpDebug::getObjectPropCodeName(propertyCodes[i]));
MTPD("longValues: %d\n", longValues[i]);
switch (dataTypes[i]) {
case MTP_TYPE_INT8:
MTPD("MTP_TYPE_INT8\n");
packet.putInt8(longValues[i]);
break;
case MTP_TYPE_UINT8:
MTPD("MTP_TYPE_UINT8\n");
packet.putUInt8(longValues[i]);
break;
case MTP_TYPE_INT16:
MTPD("MTP_TYPE_INT16\n");
packet.putInt16(longValues[i]);
break;
case MTP_TYPE_UINT16:
MTPD("MTP_TYPE_UINT16\n");
packet.putUInt16(longValues[i]);
break;
case MTP_TYPE_INT32:
MTPD("MTP_TYPE_INT32\n");
packet.putInt32(longValues[i]);
break;
case MTP_TYPE_UINT32:
MTPD("MTP_TYPE_UINT32\n");
packet.putUInt32(longValues[i]);
break;
case MTP_TYPE_INT64:
MTPD("MTP_TYPE_INT64\n");
packet.putInt64(longValues[i]);
break;
case MTP_TYPE_UINT64:
MTPD("MTP_TYPE_UINT64\n");
packet.putUInt64(longValues[i]);
break;
case MTP_TYPE_INT128:
MTPD("MTP_TYPE_INT128\n");
packet.putInt128(longValues[i]);
break;
case MTP_TYPE_UINT128:
MTPD("MTP_TYPE_UINT128\n");
packet.putUInt128(longValues[i]);
break;
case MTP_TYPE_STR:
MTPD("MTP_TYPE_STR: %s\n", valueStrs[i].c_str());
packet.putString((const char*) valueStrs[i].c_str());
break;
default:
MTPE("bad or unsupported data type: %i in MyMtpDatabase::getObjectPropertyList", dataTypes[i]);
break;
}
}
}
return 0;
}
int MtpStorage::renameObject(MtpObjectHandle handle, std::string newName) {
int index;
MTPD("MtpStorage::renameObject, handle: %d, new name: '%s'\n", handle, newName.c_str());
if (handle == MTP_PARENT_ROOT) {
MTPE("parent == MTP_PARENT_ROOT, cannot rename root\n");
return -1;
} else {
for (iter i = mtpmap.begin(); i != mtpmap.end(); i++) {
MTPD("root: %d\n", i->second->Root());
Node* node = i->second->findNode(handle, i->second->Root());
if (node != NULL) {
std::string oldName = i->second->getPath(node);
std::string parentdir = oldName.substr(0, oldName.find_last_of('/'));
std::string newFullName = parentdir + "/" + newName;
MTPD("old: '%s', new: '%s'\n", oldName.c_str(), newFullName.c_str());
if (rename(oldName.c_str(), newFullName.c_str()) == 0) {
node->rename(newFullName);
return 0;
} else {
MTPE("MtpStorage::renameObject failed, handle: %d, new name: '%s'\n", handle, newName.c_str());
return -1;
}
}
}
}
// handle not found on this storage
return -1;
}
void MtpStorage::createEmptyDir(const char* path) {
Node *node;
++mtpparentid;
MtpStorageID storage = getStorageID();
MTPD("MtpStorage::createEmptyDir path: '%s', storage: %i, mtpparentid: %d\n", path, storage, mtpparentid);
mtpmap[mtpparentid] = new Tree();
for (iter i = mtpmap.begin(); i != mtpmap.end(); ++i) {
node = i->second->findNodePath(path, i->second->Root());
if (node != NULL) {
mtpmap[mtpparentid]->setMtpParentId(mtpparentid, node);
}
}
}
int MtpStorage::getObjectPropertyValue(MtpObjectHandle handle, MtpObjectProperty property, uint64_t &longValue) {
Node *node;
for (iter i = mtpmap.begin(); i != mtpmap.end(); i++) {
node = i->second->findNode(handle, i->second->Root());
if (node != NULL) {
longValue = node->getIntProperty(property);
return 0;
}
}
// handle not found on this storage
return -1;
}
pthread_t MtpStorage::inotify(void) {
pthread_t thread;
ThreadPtr inotifyptr = &MtpStorage::inotify_t;
PThreadPtr p = *(PThreadPtr*)&inotifyptr;
pthread_create(&thread, NULL, p, this);
return thread;
}
int MtpStorage::addInotifyDirs(std::string path) {
struct dirent *de;
DIR *d;
struct stat st;
std::string inotifypath;
d = opendir(path.c_str());
if (d == NULL) {
MTPE("MtpStorage::addInotifyDirs unable to open '%s'\n", path.c_str());
closedir(d);
return -1;
}
while ((de = readdir(d)) != NULL) {
inotifypath = path + "/" + de->d_name;
if (lstat(inotifypath.c_str(), &st)) {
MTPE("Error using lstat on '%s'\n", inotifypath.c_str());
return -1;
}
if (!(st.st_mode & S_IFDIR) || strcmp(de->d_name, ".") == 0 || strcmp(de->d_name, "..") == 0)
continue;
if (addInotifyDirs(inotifypath)) {
closedir(d);
return -1;
}
inotify_wd = inotify_add_watch(inotify_fd, inotifypath.c_str(), WATCH_FLAGS);
inotifymap[inotify_wd] = inotifypath;
MTPD("added inotify dir: '%s'\n", inotifypath.c_str());
}
closedir(d);
return 0;
}
int MtpStorage::inotify_t(void) {
int len, i = 0;
int local_mtpparentid;
Node* node = NULL;
struct stat st;
#define EVENT_SIZE ( sizeof(struct inotify_event) )
#define EVENT_BUF_LEN ( 1024 * ( EVENT_SIZE + 16) )
char buf[EVENT_BUF_LEN];
std::string item, parent = "";
MTPD("starting inotify thread\n");
inotify_fd = inotify_init();
if (inotify_fd < 0){
MTPE("Can't run inotify for mtp server\n");
}
inotify_wd = inotify_add_watch(inotify_fd, getPath(), WATCH_FLAGS);
inotifymap[inotify_wd] = getPath();
if (addInotifyDirs(getPath())) {
MTPE("MtpStorage::inotify_t failed to add watches to directories\n");
for (std::map<int, std::string>::iterator i = inotifymap.begin(); i != inotifymap.end(); i++) {
inotify_rm_watch(inotify_fd, i->first);
}
close(inotify_fd);
return -1;
}
while (true) {
i = 0;
len = read(inotify_fd, buf, EVENT_BUF_LEN);
if (len < 0) {
MTPE("inotify_t Can't read inotify events\n");
}
while (i < len) {
struct inotify_event *event = ( struct inotify_event * ) &buf[ i ];
if ( event->len ) {
if (inotifymap[event->wd].empty()) {
MTPE("Unable to locate inotify_wd: %i\n", event->wd);
goto end;
} else {
item = inotifymap[event->wd];
item = item + "/" + event->name;
MTPD("inotify_t item: '%s'\n", item.c_str());
if (event->mask & IN_CREATE || event->mask & IN_MOVED_TO) {
lockMutex(1);
if (event->mask & IN_ISDIR) {
MTPD("inotify_t create is dir\n");
} else {
MTPD("inotify_t create is file\n");
}
for (iter i = mtpmap.begin(); i != mtpmap.end(); ++i) {
node = i->second->findNodePath(item, i->second->Root());
if (node != NULL)
break;
}
if (node == NULL) {
parent = item.substr(0, item.find_last_of('/'));
MTPD("parent: %s\n", parent.c_str());
if (parent == getPath()) {
local_mtpparentid = 1;
} else {
for (iter i = mtpmap.begin(); i != mtpmap.end(); ++i) {
node = i->second->findNodePath(parent, i->second->Root());
MTPD("searching for node: %d\n", (int)node);
if (node != NULL) {
local_mtpparentid = i->second->getMtpParentId(node);
break;
}
}
if (node == NULL) {
MTPE("inotify_t unable to locate mtparentid\n");
goto end;
}
}
++mtpid;
MTPD("mtpid: %d\n", mtpid);
MTPD("mtpparentid1: %d\n", local_mtpparentid);
node = mtpmap[local_mtpparentid]->addNode(mtpid, item);
mtpmap[local_mtpparentid]->setMtpParentId(local_mtpparentid, node);
node->addProperties(getStorageID(), getParentObject(parent));
if (event->mask & IN_ISDIR) {
createEmptyDir(item.c_str());
}
mServer->sendObjectAdded(mtpid);
} else {
MTPD("inotify_t item already exists.\n");
}
if (event->mask & IN_ISDIR) {
inotify_wd = inotify_add_watch(inotify_fd, item.c_str(), WATCH_FLAGS);
inotifymap[inotify_wd] = item;
MTPD("added inotify dir: '%s'\n", item.c_str());
MTPD("inotify_t scanning new dir\n");
readParentDirs(item);
std::string mtpParent;
while (!mtpParentList.empty()) {
mtpParent = mtpParentList.front();
mtpParentList.pop_front();
readParentDirs(mtpParent);
inotify_wd = inotify_add_watch(inotify_fd, mtpParent.c_str(), WATCH_FLAGS);
inotifymap[inotify_wd] = mtpParent;
MTPD("added inotify dir: '%s'\n", mtpParent.c_str());
}
}
} else if (event->mask & IN_DELETE || event->mask & IN_MOVED_FROM) {
lockMutex(1);
if (event->mask & IN_ISDIR) {
MTPD("inotify_t Directory %s deleted\n", event->name);
} else {
MTPD("inotify_t File %s deleted\n", event->name);
}
for (iter i = mtpmap.begin(); i != mtpmap.end(); ++i) {
node = i->second->findNodePath(item, i->second->Root());
if (node != NULL)
break;
}
if (node != NULL && node->Mtpid() > 0) {
int local_id = node->Mtpid();
node = NULL;
deleteFile(local_id);
mServer->sendObjectRemoved(local_id);
} else {
MTPD("inotify_t already removed.\n");
}
if (event->mask & IN_ISDIR) {
std::string orig_item = item + "/";
size_t item_size = orig_item.size();
std::string path_check;
for (std::map<int, std::string>::iterator i = inotifymap.begin(); i != inotifymap.end(); i++) {
if ((i->second.size() > item_size && i->second.substr(0, item_size) == orig_item) || i->second == item) {
inotify_rm_watch(inotify_fd, i->first);
MTPD("inotify_t removing watch on '%s'\n", i->second.c_str());
inotifymap.erase(i->first);
}
}
}
} else if (event->mask & IN_MODIFY) {
MTPD("inotify_t item %s modified.\n", event->name);
for (iter i = mtpmap.begin(); i != mtpmap.end(); ++i) {
node = i->second->findNodePath(item, i->second->Root());
if (node != NULL)
break;
}
if (node != NULL) {
uint64_t orig_size = node->getIntProperty(MTP_PROPERTY_OBJECT_SIZE);
struct stat st;
uint64_t new_size = 0;
if (lstat(item.c_str(), &st) == 0)
new_size = (uint64_t)st.st_size;
if (orig_size != new_size) {
MTPD("size changed from %llu to %llu on mtpid: %i\n", orig_size, new_size, node->Mtpid());
node->updateProperty(MTP_PROPERTY_OBJECT_SIZE, new_size, "", MTP_TYPE_UINT64);
mServer->sendObjectUpdated(node->Mtpid());
}
} else {
MTPE("inotify_t modified item not found\n");
}
}
}
}
end:
unlockMutex(1);
i += EVENT_SIZE + event->len;
}
}
for (std::map<int, std::string>::iterator i = inotifymap.begin(); i != inotifymap.end(); i++) {
inotify_rm_watch(inotify_fd, i->first);
}
close(inotify_fd);
return 0;
}
int MtpStorage::getParentObject(std::string parent_path) {
Node* node;
if (parent_path == getPath()) {
MTPD("MtpStorage::getParentObject for: '%s' returning: 0 for root\n", parent_path.c_str());
return 0;
}
for (iter i = mtpmap.begin(); i != mtpmap.end(); ++i) {
node = i->second->findNodePath(parent_path, i->second->Root());
if (node != NULL) {
MTPD("MtpStorage::getParentObject for: '%s' returning: %i\n", parent_path.c_str(), node->Mtpid());
return node->Mtpid();
}
}
MTPE("MtpStorage::getParentObject for: '%s' unable to locate node\n", parent_path.c_str());
return -1;
}
void MtpStorage::lockMutex(int thread_type) {
if (!use_mutex)
return; // mutex is disabled
if (thread_type) {
// inotify thread
pthread_mutex_lock(&inMutex);
while (pthread_mutex_trylock(&mtpMutex)) {
pthread_mutex_unlock(&inMutex);
usleep(32000);
pthread_mutex_lock(&inMutex);
}
} else {
// main mtp thread
pthread_mutex_lock(&mtpMutex);
while (pthread_mutex_trylock(&inMutex)) {
pthread_mutex_unlock(&mtpMutex);
usleep(13000);
pthread_mutex_lock(&mtpMutex);
}
}
}
void MtpStorage::unlockMutex(int thread_type) {
if (!use_mutex)
return; // mutex is disabled
pthread_mutex_unlock(&inMutex);
pthread_mutex_unlock(&mtpMutex);
}
