1 // Copyright 2018 Google LLC. All Rights Reserved. This file and proprietary
2 // source code may only be used and distributed under the Widevine Master
3 // License Agreement.
4 //
5 #ifndef CLEARKEY_DEVICE_FILES_H_
6 #define CLEARKEY_DEVICE_FILES_H_
7 
8 #include <errno.h>
9 #include <stdio.h>
10 #include <unistd.h>
11 
12 #include <set>
13 #include <string>
14 #include <vector>
15 
16 #include "protos/DeviceFiles.pb.h"
17 #include "ClearKeyTypes.h"
18 #include "MemoryFileSystem.h"
19 
20 namespace android {
21 namespace hardware {
22 namespace drm {
23 namespace V1_2 {
24 namespace clearkey {
25 
26 class DeviceFiles {
27  public:
28     typedef enum {
29         kLicenseStateUnknown,
30         kLicenseStateActive,
31         kLicenseStateReleasing,
32     } LicenseState;
33 
DeviceFiles()34     DeviceFiles() {};
~DeviceFiles()35     virtual ~DeviceFiles() {};
36 
37     virtual bool StoreLicense(const std::string& keySetId, LicenseState state,
38             const std::string& keyResponse);
39 
40     virtual bool RetrieveLicense(
41             const std::string& key_set_id, LicenseState* state, std::string* offlineLicense);
42 
43     virtual bool LicenseExists(const std::string& keySetId);
44 
45     virtual std::vector<std::string> ListLicenses() const;
46 
47     virtual bool DeleteLicense(const std::string& keySetId);
48 
49     virtual bool DeleteAllLicenses();
50 
51  private:
52     bool FileExists(const std::string& path) const;
53     ssize_t GetFileSize(const std::string& fileName) const;
54     bool RemoveFile(const std::string& fileName);
55 
56     bool RetrieveHashedFile(const std::string& fileName, OfflineFile* deSerializedFile);
57     bool StoreFileRaw(const std::string& fileName, const std::string& serializedFile);
58     bool StoreFileWithHash(const std::string& fileName, const std::string& serializedFile);
59 
60     MemoryFileSystem mFileHandle;
61 
62     CLEARKEY_DISALLOW_COPY_AND_ASSIGN(DeviceFiles);
63 };
64 
65 } // namespace clearkey
66 } // namespace V1_2
67 } // namespace drm
68 } // namespace hardware
69 } // namespace android
70 
71 #endif  // CLEARKEY_DEVICE_FILES_H_
72