MtpServer.cpp revision 873871f3e75831bcda6c3f75bb4d53355ca5c53a 
1/*
2 * Copyright (C) 2010 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#include <stdio.h>
18#include <stdlib.h>
19#include <sys/types.h>
20#include <sys/ioctl.h>
21#include <sys/stat.h>
22#include <fcntl.h>
23#include <errno.h>
24
25#include <cutils/properties.h>
26
27#include "MtpDebug.h"
28#include "MtpDatabase.h"
29#include "MtpProperty.h"
30#include "MtpServer.h"
31#include "MtpStorage.h"
32#include "MtpStringBuffer.h"
33
34#include "f_mtp.h"
35
36namespace android {
37
38static const MtpOperationCode kSupportedOperationCodes[] = {
39    MTP_OPERATION_GET_DEVICE_INFO,
40    MTP_OPERATION_OPEN_SESSION,
41    MTP_OPERATION_CLOSE_SESSION,
42    MTP_OPERATION_GET_STORAGE_IDS,
43    MTP_OPERATION_GET_STORAGE_INFO,
44    MTP_OPERATION_GET_NUM_OBJECTS,
45    MTP_OPERATION_GET_OBJECT_HANDLES,
46    MTP_OPERATION_GET_OBJECT_INFO,
47    MTP_OPERATION_GET_OBJECT,
48//    MTP_OPERATION_GET_THUMB,
49    MTP_OPERATION_DELETE_OBJECT,
50    MTP_OPERATION_SEND_OBJECT_INFO,
51    MTP_OPERATION_SEND_OBJECT,
52//    MTP_OPERATION_INITIATE_CAPTURE,
53//    MTP_OPERATION_FORMAT_STORE,
54//    MTP_OPERATION_RESET_DEVICE,
55//    MTP_OPERATION_SELF_TEST,
56//    MTP_OPERATION_SET_OBJECT_PROTECTION,
57//    MTP_OPERATION_POWER_DOWN,
58    MTP_OPERATION_GET_DEVICE_PROP_DESC,
59    MTP_OPERATION_GET_DEVICE_PROP_VALUE,
60    MTP_OPERATION_SET_DEVICE_PROP_VALUE,
61    MTP_OPERATION_RESET_DEVICE_PROP_VALUE,
62//    MTP_OPERATION_TERMINATE_OPEN_CAPTURE,
63//    MTP_OPERATION_MOVE_OBJECT,
64//    MTP_OPERATION_COPY_OBJECT,
65//    MTP_OPERATION_GET_PARTIAL_OBJECT,
66//    MTP_OPERATION_INITIATE_OPEN_CAPTURE,
67    MTP_OPERATION_GET_OBJECT_PROPS_SUPPORTED,
68//    MTP_OPERATION_GET_OBJECT_PROP_DESC,
69    MTP_OPERATION_GET_OBJECT_PROP_VALUE,
70    MTP_OPERATION_SET_OBJECT_PROP_VALUE,
71//    MTP_OPERATION_GET_OBJECT_REFERENCES,
72//    MTP_OPERATION_SET_OBJECT_REFERENCES,
73//    MTP_OPERATION_SKIP,
74};
75
76static const MtpEventCode kSupportedEventCodes[] = {
77    MTP_EVENT_OBJECT_ADDED,
78    MTP_EVENT_OBJECT_REMOVED,
79};
80
81static const MtpObjectProperty kSupportedObjectProperties[] = {
82    MTP_PROPERTY_STORAGE_ID,
83    MTP_PROPERTY_OBJECT_FORMAT,
84    MTP_PROPERTY_OBJECT_SIZE,
85    MTP_PROPERTY_OBJECT_FILE_NAME,
86    MTP_PROPERTY_PARENT_OBJECT,
87};
88
89static const MtpObjectFormat kSupportedPlaybackFormats[] = {
90    // MTP_FORMAT_UNDEFINED,
91    MTP_FORMAT_ASSOCIATION,
92    // MTP_FORMAT_TEXT,
93    // MTP_FORMAT_HTML,
94    MTP_FORMAT_MP3,
95    //MTP_FORMAT_AVI,
96    MTP_FORMAT_MPEG,
97    // MTP_FORMAT_ASF,
98    MTP_FORMAT_EXIF_JPEG,
99    MTP_FORMAT_TIFF_EP,
100    // MTP_FORMAT_BMP,
101    MTP_FORMAT_GIF,
102    MTP_FORMAT_JFIF,
103    MTP_FORMAT_PNG,
104    MTP_FORMAT_TIFF,
105    MTP_FORMAT_WMA,
106    MTP_FORMAT_OGG,
107    MTP_FORMAT_AAC,
108    // MTP_FORMAT_FLAC,
109    // MTP_FORMAT_WMV,
110    MTP_FORMAT_MP4_CONTAINER,
111    MTP_FORMAT_MP2,
112    MTP_FORMAT_3GP_CONTAINER,
113    // MTP_FORMAT_ABSTRACT_AUDIO_ALBUM,
114    // MTP_FORMAT_ABSTRACT_AV_PLAYLIST,
115    // MTP_FORMAT_WPL_PLAYLIST,
116    // MTP_FORMAT_M3U_PLAYLIST,
117    // MTP_FORMAT_MPL_PLAYLIST,
118    // MTP_FORMAT_PLS_PLAYLIST,
119};
120
121MtpServer::MtpServer(int fd, MtpDatabase* database,
122                    int fileGroup, int filePerm, int directoryPerm)
123    :   mFD(fd),
124        mDatabase(database),
125        mFileGroup(fileGroup),
126        mFilePermission(filePerm),
127        mDirectoryPermission(directoryPerm),
128        mSessionID(0),
129        mSessionOpen(false),
130        mSendObjectHandle(kInvalidObjectHandle),
131        mSendObjectFormat(0),
132        mSendObjectFileSize(0)
133{
134    initObjectProperties();
135}
136
137MtpServer::~MtpServer() {
138}
139
140void MtpServer::addStorage(const char* filePath) {
141    int index = mStorages.size() + 1;
142    index |= index << 16;   // set high and low part to our index
143    MtpStorage* storage = new MtpStorage(index, filePath, mDatabase);
144    addStorage(storage);
145}
146
147MtpStorage* MtpServer::getStorage(MtpStorageID id) {
148    for (int i = 0; i < mStorages.size(); i++) {
149        MtpStorage* storage =  mStorages[i];
150        if (storage->getStorageID() == id)
151            return storage;
152    }
153    return NULL;
154}
155
156void MtpServer::run() {
157    int fd = mFD;
158
159    LOGV("MtpServer::run fd: %d\n", fd);
160
161    while (1) {
162        int ret = mRequest.read(fd);
163        if (ret < 0) {
164            LOGE("request read returned %d, errno: %d", ret, errno);
165            if (errno == ECANCELED) {
166                // return to top of loop and wait for next command
167                continue;
168            }
169            break;
170        }
171        MtpOperationCode operation = mRequest.getOperationCode();
172        MtpTransactionID transaction = mRequest.getTransactionID();
173
174        LOGV("operation: %s", MtpDebug::getOperationCodeName(operation));
175        mRequest.dump();
176
177        // FIXME need to generalize this
178        bool dataIn = (operation == MTP_OPERATION_SEND_OBJECT_INFO);
179        if (dataIn) {
180            int ret = mData.read(fd);
181            if (ret < 0) {
182                LOGE("data read returned %d, errno: %d", ret, errno);
183                if (errno == ECANCELED) {
184                    // return to top of loop and wait for next command
185                    continue;
186                }
187                break;
188            }
189            LOGV("received data:");
190            mData.dump();
191        } else {
192            mData.reset();
193        }
194
195        if (handleRequest()) {
196            if (!dataIn && mData.hasData()) {
197                mData.setOperationCode(operation);
198                mData.setTransactionID(transaction);
199                LOGV("sending data:");
200                mData.dump();
201                ret = mData.write(fd);
202                if (ret < 0) {
203                    LOGE("request write returned %d, errno: %d", ret, errno);
204                    if (errno == ECANCELED) {
205                        // return to top of loop and wait for next command
206                        continue;
207                    }
208                    break;
209                }
210            }
211
212            mResponse.setTransactionID(transaction);
213            LOGV("sending response %04X", mResponse.getResponseCode());
214            ret = mResponse.write(fd);
215            if (ret < 0) {
216                LOGE("request write returned %d, errno: %d", ret, errno);
217                if (errno == ECANCELED) {
218                    // return to top of loop and wait for next command
219                    continue;
220                }
221                break;
222            }
223        } else {
224            LOGV("skipping response\n");
225        }
226    }
227}
228
229MtpProperty* MtpServer::getObjectProperty(MtpPropertyCode propCode) {
230    for (int i = 0; i < mObjectProperties.size(); i++) {
231        MtpProperty* property = mObjectProperties[i];
232        if (property->getPropertyCode() == propCode)
233            return property;
234    }
235    return NULL;
236}
237
238MtpProperty* MtpServer::getDeviceProperty(MtpPropertyCode propCode) {
239    for (int i = 0; i < mDeviceProperties.size(); i++) {
240        MtpProperty* property = mDeviceProperties[i];
241        if (property->getPropertyCode() == propCode)
242            return property;
243    }
244    return NULL;
245}
246
247void MtpServer::sendObjectAdded(MtpObjectHandle handle) {
248    LOGD("sendObjectAdded %d\n", handle);
249    mEvent.setEventCode(MTP_EVENT_OBJECT_ADDED);
250    mEvent.setTransactionID(mRequest.getTransactionID());
251    mEvent.setParameter(1, handle);
252    int ret = mEvent.write(mFD);
253    LOGD("mEvent.write returned %d\n", ret);
254}
255
256void MtpServer::sendObjectRemoved(MtpObjectHandle handle) {
257    LOGD("sendObjectRemoved %d\n", handle);
258    mEvent.setEventCode(MTP_EVENT_OBJECT_REMOVED);
259    mEvent.setTransactionID(mRequest.getTransactionID());
260    mEvent.setParameter(1, handle);
261    int ret = mEvent.write(mFD);
262    LOGD("mEvent.write returned %d\n", ret);
263}
264
265void MtpServer::initObjectProperties() {
266    mObjectProperties.push(new MtpProperty(MTP_PROPERTY_STORAGE_ID, MTP_TYPE_UINT16));
267    mObjectProperties.push(new MtpProperty(MTP_PROPERTY_OBJECT_FORMAT, MTP_TYPE_UINT16));
268    mObjectProperties.push(new MtpProperty(MTP_PROPERTY_OBJECT_SIZE, MTP_TYPE_UINT64));
269    mObjectProperties.push(new MtpProperty(MTP_PROPERTY_OBJECT_FILE_NAME, MTP_TYPE_STR));
270    mObjectProperties.push(new MtpProperty(MTP_PROPERTY_PARENT_OBJECT, MTP_TYPE_UINT32));
271}
272
273bool MtpServer::handleRequest() {
274    MtpOperationCode operation = mRequest.getOperationCode();
275    MtpResponseCode response;
276
277    mResponse.reset();
278
279    if (mSendObjectHandle != kInvalidObjectHandle && operation != MTP_OPERATION_SEND_OBJECT) {
280        // FIXME - need to delete mSendObjectHandle from the database
281        LOGE("expected SendObject after SendObjectInfo");
282        mSendObjectHandle = kInvalidObjectHandle;
283    }
284
285    switch (operation) {
286        case MTP_OPERATION_GET_DEVICE_INFO:
287            response = doGetDeviceInfo();
288            break;
289        case MTP_OPERATION_OPEN_SESSION:
290            response = doOpenSession();
291            break;
292        case MTP_OPERATION_CLOSE_SESSION:
293            response = doCloseSession();
294            break;
295        case MTP_OPERATION_GET_STORAGE_IDS:
296            response = doGetStorageIDs();
297            break;
298         case MTP_OPERATION_GET_STORAGE_INFO:
299            response = doGetStorageInfo();
300            break;
301        case MTP_OPERATION_GET_OBJECT_PROPS_SUPPORTED:
302            response = doGetObjectPropsSupported();
303            break;
304        case MTP_OPERATION_GET_OBJECT_HANDLES:
305            response = doGetObjectHandles();
306            break;
307        case MTP_OPERATION_GET_OBJECT_PROP_VALUE:
308            response = doGetObjectPropValue();
309            break;
310        case MTP_OPERATION_GET_OBJECT_INFO:
311            response = doGetObjectInfo();
312            break;
313        case MTP_OPERATION_GET_OBJECT:
314            response = doGetObject();
315            break;
316        case MTP_OPERATION_SEND_OBJECT_INFO:
317            response = doSendObjectInfo();
318            break;
319        case MTP_OPERATION_SEND_OBJECT:
320            response = doSendObject();
321            break;
322        case MTP_OPERATION_DELETE_OBJECT:
323            response = doDeleteObject();
324            break;
325        case MTP_OPERATION_GET_OBJECT_PROP_DESC:
326            response = doGetObjectPropDesc();
327            break;
328        default:
329            response = MTP_RESPONSE_OPERATION_NOT_SUPPORTED;
330            break;
331    }
332
333    if (response == MTP_RESPONSE_TRANSACTION_CANCELLED)
334        return false;
335    mResponse.setResponseCode(response);
336    return true;
337}
338
339MtpResponseCode MtpServer::doGetDeviceInfo() {
340    MtpStringBuffer   string;
341    char prop_value[PROPERTY_VALUE_MAX];
342
343    // fill in device info
344    mData.putUInt16(MTP_STANDARD_VERSION);
345    mData.putUInt32(6); // MTP Vendor Extension ID
346    mData.putUInt16(MTP_STANDARD_VERSION);
347    string.set("microsoft.com: 1.0;");
348    mData.putString(string); // MTP Extensions
349    mData.putUInt16(0); //Functional Mode
350    mData.putAUInt16(kSupportedOperationCodes,
351            sizeof(kSupportedOperationCodes) / sizeof(uint16_t)); // Operations Supported
352    mData.putAUInt16(kSupportedEventCodes,
353            sizeof(kSupportedEventCodes) / sizeof(uint16_t)); // Events Supported
354    mData.putEmptyArray(); // Device Properties Supported
355    mData.putEmptyArray(); // Capture Formats
356    mData.putAUInt16(kSupportedPlaybackFormats,
357            sizeof(kSupportedPlaybackFormats) / sizeof(uint16_t)); // Playback Formats
358    // FIXME
359    string.set("Google, Inc.");
360    mData.putString(string);   // Manufacturer
361
362    property_get("ro.product.model", prop_value, "MTP Device");
363    string.set(prop_value);
364    mData.putString(string);   // Model
365    string.set("1.0");
366    mData.putString(string);   // Device Version
367
368    property_get("ro.serialno", prop_value, "????????");
369    string.set(prop_value);
370    mData.putString(string);   // Serial Number
371
372    return MTP_RESPONSE_OK;
373}
374
375MtpResponseCode MtpServer::doOpenSession() {
376    if (mSessionOpen) {
377        mResponse.setParameter(1, mSessionID);
378        return MTP_RESPONSE_SESSION_ALREADY_OPEN;
379    }
380    mSessionID = mRequest.getParameter(1);
381    mSessionOpen = true;
382    return MTP_RESPONSE_OK;
383}
384
385MtpResponseCode MtpServer::doCloseSession() {
386    if (!mSessionOpen)
387        return MTP_RESPONSE_SESSION_NOT_OPEN;
388    mSessionID = 0;
389    mSessionOpen = false;
390    return MTP_RESPONSE_OK;
391}
392
393MtpResponseCode MtpServer::doGetStorageIDs() {
394    if (!mSessionOpen)
395        return MTP_RESPONSE_SESSION_NOT_OPEN;
396
397    int count = mStorages.size();
398    mData.putUInt32(count);
399    for (int i = 0; i < count; i++)
400        mData.putUInt32(mStorages[i]->getStorageID());
401
402    return MTP_RESPONSE_OK;
403}
404
405MtpResponseCode MtpServer::doGetStorageInfo() {
406    MtpStringBuffer   string;
407
408    if (!mSessionOpen)
409        return MTP_RESPONSE_SESSION_NOT_OPEN;
410    MtpStorageID id = mRequest.getParameter(1);
411    MtpStorage* storage = getStorage(id);
412    if (!storage)
413        return MTP_RESPONSE_INVALID_STORAGE_ID;
414
415    mData.putUInt16(storage->getType());
416    mData.putUInt16(storage->getFileSystemType());
417    mData.putUInt16(storage->getAccessCapability());
418    mData.putUInt64(storage->getMaxCapacity());
419    mData.putUInt64(storage->getFreeSpace());
420    mData.putUInt32(1024*1024*1024); // Free Space in Objects
421    string.set(storage->getDescription());
422    mData.putString(string);
423    mData.putEmptyString();   // Volume Identifier
424
425    return MTP_RESPONSE_OK;
426}
427
428MtpResponseCode MtpServer::doGetObjectPropsSupported() {
429    if (!mSessionOpen)
430        return MTP_RESPONSE_SESSION_NOT_OPEN;
431    MtpObjectFormat format = mRequest.getParameter(1);
432    mData.putAUInt16(kSupportedObjectProperties,
433            sizeof(kSupportedObjectProperties) / sizeof(uint16_t));
434    return MTP_RESPONSE_OK;
435}
436
437MtpResponseCode MtpServer::doGetObjectHandles() {
438    if (!mSessionOpen)
439        return MTP_RESPONSE_SESSION_NOT_OPEN;
440    MtpStorageID storageID = mRequest.getParameter(1);      // 0xFFFFFFFF for all storage
441    MtpObjectFormat format = mRequest.getParameter(2);      // 0 for all formats
442    MtpObjectHandle parent = mRequest.getParameter(3);      // 0xFFFFFFFF for objects with no parent
443                                                            // 0x00000000 for all objects?
444    if (parent == 0xFFFFFFFF)
445        parent = 0;
446
447    MtpObjectHandleList* handles = mDatabase->getObjectList(storageID, format, parent);
448    mData.putAUInt32(handles);
449    delete handles;
450    return MTP_RESPONSE_OK;
451}
452
453MtpResponseCode MtpServer::doGetObjectPropValue() {
454    MtpObjectHandle handle = mRequest.getParameter(1);
455    MtpObjectProperty property = mRequest.getParameter(2);
456
457    return mDatabase->getObjectProperty(handle, property, mData);
458}
459
460MtpResponseCode MtpServer::doGetObjectInfo() {
461    MtpObjectHandle handle = mRequest.getParameter(1);
462    return mDatabase->getObjectInfo(handle, mData);
463}
464
465MtpResponseCode MtpServer::doGetObject() {
466    MtpObjectHandle handle = mRequest.getParameter(1);
467    MtpString pathBuf;
468    int64_t fileLength;
469    if (!mDatabase->getObjectFilePath(handle, pathBuf, fileLength))
470        return MTP_RESPONSE_INVALID_OBJECT_HANDLE;
471    const char* filePath = (const char *)pathBuf;
472
473    mtp_file_range  mfr;
474    mfr.fd = open(filePath, O_RDONLY);
475    if (mfr.fd < 0) {
476        return MTP_RESPONSE_GENERAL_ERROR;
477    }
478    mfr.offset = 0;
479    mfr.length = fileLength;
480
481    // send data header
482    mData.setOperationCode(mRequest.getOperationCode());
483    mData.setTransactionID(mRequest.getTransactionID());
484    mData.writeDataHeader(mFD, fileLength);
485
486    // then transfer the file
487    int ret = ioctl(mFD, MTP_SEND_FILE, (unsigned long)&mfr);
488    close(mfr.fd);
489    if (ret < 0) {
490        if (errno == ECANCELED)
491            return MTP_RESPONSE_TRANSACTION_CANCELLED;
492        else
493            return MTP_RESPONSE_GENERAL_ERROR;
494    }
495    return MTP_RESPONSE_OK;
496}
497
498MtpResponseCode MtpServer::doSendObjectInfo() {
499    MtpString path;
500    MtpStorageID storageID = mRequest.getParameter(1);
501    MtpStorage* storage = getStorage(storageID);
502    MtpObjectHandle parent = mRequest.getParameter(2);
503    if (!storage)
504        return MTP_RESPONSE_INVALID_STORAGE_ID;
505
506    // special case the root
507    if (parent == MTP_PARENT_ROOT) {
508        path = storage->getPath();
509        parent = 0;
510    } else {
511        int64_t dummy;
512        if (!mDatabase->getObjectFilePath(parent, path, dummy))
513            return MTP_RESPONSE_INVALID_OBJECT_HANDLE;
514    }
515
516    // read only the fields we need
517    mData.getUInt32();  // storage ID
518    MtpObjectFormat format = mData.getUInt16();
519    mData.getUInt16();  // protection status
520    mSendObjectFileSize = mData.getUInt32();
521    mData.getUInt16();  // thumb format
522    mData.getUInt32();  // thumb compressed size
523    mData.getUInt32();  // thumb pix width
524    mData.getUInt32();  // thumb pix height
525    mData.getUInt32();  // image pix width
526    mData.getUInt32();  // image pix height
527    mData.getUInt32();  // image bit depth
528    mData.getUInt32();  // parent
529    uint16_t associationType = mData.getUInt16();
530    uint32_t associationDesc = mData.getUInt32();   // association desc
531    mData.getUInt32();  // sequence number
532    MtpStringBuffer name, created, modified;
533    mData.getString(name);    // file name
534    mData.getString(created);      // date created
535    mData.getString(modified);     // date modified
536    // keywords follow
537
538    time_t modifiedTime;
539    if (!parseDateTime(modified, modifiedTime))
540        modifiedTime = 0;
541
542    if (path[path.size() - 1] != '/')
543        path += "/";
544    path += (const char *)name;
545
546    mDatabase->beginTransaction();
547    MtpObjectHandle handle = mDatabase->beginSendObject((const char*)path,
548            format, parent, storageID, mSendObjectFileSize, modifiedTime);
549    if (handle == kInvalidObjectHandle) {
550        mDatabase->rollbackTransaction();
551        return MTP_RESPONSE_GENERAL_ERROR;
552    }
553    mDatabase->commitTransaction();
554
555  if (format == MTP_FORMAT_ASSOCIATION) {
556        mode_t mask = umask(0);
557        int ret = mkdir((const char *)path, mDirectoryPermission);
558        umask(mask);
559        if (ret && ret != -EEXIST)
560            return MTP_RESPONSE_GENERAL_ERROR;
561        chown((const char *)path, getuid(), mFileGroup);
562    } else {
563        mSendObjectFilePath = path;
564        // save the handle for the SendObject call, which should follow
565        mSendObjectHandle = handle;
566        mSendObjectFormat = format;
567    }
568
569    mResponse.setParameter(1, storageID);
570    mResponse.setParameter(2, (parent == 0 ? 0xFFFFFFFF: parent));
571    mResponse.setParameter(3, handle);
572
573    return MTP_RESPONSE_OK;
574}
575
576MtpResponseCode MtpServer::doSendObject() {
577    MtpResponseCode result = MTP_RESPONSE_OK;
578    mode_t mask;
579    int ret;
580
581    if (mSendObjectHandle == kInvalidObjectHandle) {
582        LOGE("Expected SendObjectInfo before SendObject");
583        result = MTP_RESPONSE_NO_VALID_OBJECT_INFO;
584        goto done;
585    }
586
587    // read the header
588    ret = mData.readDataHeader(mFD);
589    // FIXME - check for errors here.
590
591    // reset so we don't attempt to send this back
592    mData.reset();
593
594    mtp_file_range  mfr;
595    mfr.fd = open(mSendObjectFilePath, O_RDWR | O_CREAT | O_TRUNC);
596    if (mfr.fd < 0) {
597        result = MTP_RESPONSE_GENERAL_ERROR;
598        goto done;
599    }
600    fchown(mfr.fd, getuid(), mFileGroup);
601    // set permissions
602    mask = umask(0);
603    fchmod(mfr.fd, mFilePermission);
604    umask(mask);
605
606    mfr.offset = 0;
607    mfr.length = mSendObjectFileSize;
608
609    // transfer the file
610    ret = ioctl(mFD, MTP_RECEIVE_FILE, (unsigned long)&mfr);
611    close(mfr.fd);
612
613    LOGV("MTP_RECEIVE_FILE returned %d", ret);
614
615    if (ret < 0) {
616        unlink(mSendObjectFilePath);
617        if (errno == ECANCELED)
618            result = MTP_RESPONSE_TRANSACTION_CANCELLED;
619        else
620            result = MTP_RESPONSE_GENERAL_ERROR;
621    }
622
623done:
624    mDatabase->endSendObject(mSendObjectFilePath, mSendObjectHandle, mSendObjectFormat,
625            result == MTP_RESPONSE_OK);
626    mSendObjectHandle = kInvalidObjectHandle;
627    mSendObjectFormat = 0;
628    return result;
629}
630
631MtpResponseCode MtpServer::doDeleteObject() {
632    MtpObjectHandle handle = mRequest.getParameter(1);
633    MtpObjectFormat format = mRequest.getParameter(1);
634    // FIXME - support deleting all objects if handle is 0xFFFFFFFF
635    // FIXME - implement deleting objects by format
636    // FIXME - handle non-empty directories
637
638    MtpString filePath;
639    int64_t fileLength;
640    if (!mDatabase->getObjectFilePath(handle, filePath, fileLength))
641        return MTP_RESPONSE_INVALID_OBJECT_HANDLE;
642
643    LOGV("deleting %s", (const char *)filePath);
644    // one of these should work
645    rmdir((const char *)filePath);
646    unlink((const char *)filePath);
647
648    mDatabase->deleteFile(handle);
649
650    return MTP_RESPONSE_OK;
651}
652
653MtpResponseCode MtpServer::doGetObjectPropDesc() {
654    MtpObjectProperty propCode = mRequest.getParameter(1);
655    MtpObjectFormat format = mRequest.getParameter(2);
656    MtpProperty* property = getObjectProperty(propCode);
657    if (!property)
658        return MTP_RESPONSE_OBJECT_PROP_NOT_SUPPORTED;
659
660    property->write(mData);
661    return MTP_RESPONSE_OK;
662}
663
664}  // namespace android
665