1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
|
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "GMPUtils.h"
#include "nsDirectoryServiceDefs.h"
#include "nsIFile.h"
#include "nsCOMPtr.h"
#include "nsLiteralString.h"
#include "nsCRTGlue.h"
#include "mozilla/Base64.h"
#include "nsISimpleEnumerator.h"
namespace mozilla {
bool
GetEMEVoucherPath(nsIFile** aPath)
{
nsCOMPtr<nsIFile> path;
NS_GetSpecialDirectory(NS_GRE_DIR, getter_AddRefs(path));
if (!path) {
NS_WARNING("GetEMEVoucherPath can't get NS_GRE_DIR!");
return false;
}
path->AppendNative(NS_LITERAL_CSTRING("voucher.bin"));
path.forget(aPath);
return true;
}
bool
EMEVoucherFileExists()
{
nsCOMPtr<nsIFile> path;
bool exists;
return GetEMEVoucherPath(getter_AddRefs(path)) &&
NS_SUCCEEDED(path->Exists(&exists)) &&
exists;
}
void
SplitAt(const char* aDelims,
const nsACString& aInput,
nsTArray<nsCString>& aOutTokens)
{
nsAutoCString str(aInput);
char* end = str.BeginWriting();
const char* start = nullptr;
while (!!(start = NS_strtok(aDelims, &end))) {
aOutTokens.AppendElement(nsCString(start));
}
}
nsCString
ToBase64(const nsTArray<uint8_t>& aBytes)
{
nsAutoCString base64;
nsDependentCSubstring raw(reinterpret_cast<const char*>(aBytes.Elements()),
aBytes.Length());
nsresult rv = Base64Encode(raw, base64);
if (NS_WARN_IF(NS_FAILED(rv))) {
return NS_LITERAL_CSTRING("[Base64EncodeFailed]");
}
return base64;
}
bool
FileExists(nsIFile* aFile)
{
bool exists = false;
return aFile && NS_SUCCEEDED(aFile->Exists(&exists)) && exists;
}
DirectoryEnumerator::DirectoryEnumerator(nsIFile* aPath, Mode aMode)
: mMode(aMode)
{
aPath->GetDirectoryEntries(getter_AddRefs(mIter));
}
already_AddRefed<nsIFile>
DirectoryEnumerator::Next()
{
if (!mIter) {
return nullptr;
}
bool hasMore = false;
while (NS_SUCCEEDED(mIter->HasMoreElements(&hasMore)) && hasMore) {
nsCOMPtr<nsISupports> supports;
nsresult rv = mIter->GetNext(getter_AddRefs(supports));
if (NS_FAILED(rv)) {
continue;
}
nsCOMPtr<nsIFile> path(do_QueryInterface(supports, &rv));
if (NS_FAILED(rv)) {
continue;
}
if (mMode == DirsOnly) {
bool isDirectory = false;
rv = path->IsDirectory(&isDirectory);
if (NS_FAILED(rv) || !isDirectory) {
continue;
}
}
return path.forget();
}
return nullptr;
}
bool
ReadIntoArray(nsIFile* aFile,
nsTArray<uint8_t>& aOutDst,
size_t aMaxLength)
{
if (!FileExists(aFile)) {
return false;
}
PRFileDesc* fd = nullptr;
nsresult rv = aFile->OpenNSPRFileDesc(PR_RDONLY, 0, &fd);
if (NS_FAILED(rv)) {
return false;
}
int32_t length = PR_Seek(fd, 0, PR_SEEK_END);
PR_Seek(fd, 0, PR_SEEK_SET);
if (length < 0 || (size_t)length > aMaxLength) {
NS_WARNING("EME file is longer than maximum allowed length");
PR_Close(fd);
return false;
}
aOutDst.SetLength(length);
int32_t bytesRead = PR_Read(fd, aOutDst.Elements(), length);
PR_Close(fd);
return (bytesRead == length);
}
bool
ReadIntoString(nsIFile* aFile,
nsCString& aOutDst,
size_t aMaxLength)
{
nsTArray<uint8_t> buf;
bool rv = ReadIntoArray(aFile, buf, aMaxLength);
if (rv) {
buf.AppendElement(0); // Append null terminator, required by nsC*String.
aOutDst = nsDependentCString((const char*)buf.Elements(), buf.Length() - 1);
}
return rv;
}
bool
GMPInfoFileParser::Init(nsIFile* aInfoFile)
{
nsTArray<nsCString> lines;
static const size_t MAX_GMP_INFO_FILE_LENGTH = 5 * 1024;
nsAutoCString info;
if (!ReadIntoString(aInfoFile, info, MAX_GMP_INFO_FILE_LENGTH)) {
NS_WARNING("Failed to read info file in GMP process.");
return false;
}
// Note: we pass "\r\n" to SplitAt so that we'll split lines delimited
// by \n (Unix), \r\n (Windows) and \r (old MacOSX).
SplitAt("\r\n", info, lines);
for (nsCString line : lines) {
// Field name is the string up to but not including the first ':'
// character on the line.
int32_t colon = line.FindChar(':');
if (colon <= 0) {
// Not allowed to be the first character.
// Info field name must be at least one character.
continue;
}
nsAutoCString key(Substring(line, 0, colon));
ToLowerCase(key);
key.Trim(" ");
nsCString* value = new nsCString(Substring(line, colon + 1));
value->Trim(" ");
mValues.Put(key, value); // Hashtable assumes ownership of value.
}
return true;
}
bool
GMPInfoFileParser::Contains(const nsCString& aKey) const {
nsCString key(aKey);
ToLowerCase(key);
return mValues.Contains(key);
}
nsCString
GMPInfoFileParser::Get(const nsCString& aKey) const {
MOZ_ASSERT(Contains(aKey));
nsCString key(aKey);
ToLowerCase(key);
nsCString* p = nullptr;
if (mValues.Get(key, &p)) {
return nsCString(*p);
}
return EmptyCString();
}
bool
HaveGMPFor(const nsCString& aAPI,
nsTArray<nsCString>&& aTags)
{
nsCOMPtr<mozIGeckoMediaPluginService> mps =
do_GetService("@mozilla.org/gecko-media-plugin-service;1");
if (NS_WARN_IF(!mps)) {
return false;
}
bool hasPlugin = false;
if (NS_FAILED(mps->HasPluginForAPI(aAPI, &aTags, &hasPlugin))) {
return false;
}
return hasPlugin;
}
} // namespace mozilla
|
