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1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "content/child/webcrypto/webcrypto_util.h" | 5 #include "content/child/webcrypto/webcrypto_util.h" |
6 | 6 |
7 #include "base/base64.h" | 7 #include "base/base64.h" |
8 #include "base/logging.h" | 8 #include "base/logging.h" |
9 #include "base/strings/stringprintf.h" | 9 #include "base/strings/stringprintf.h" |
10 #include "content/child/webcrypto/status.h" | 10 #include "content/child/webcrypto/status.h" |
11 #include "third_party/WebKit/public/platform/WebCryptoAlgorithm.h" | 11 #include "third_party/WebKit/public/platform/WebCryptoAlgorithm.h" |
12 #include "third_party/WebKit/public/platform/WebCryptoAlgorithmParams.h" | 12 #include "third_party/WebKit/public/platform/WebCryptoAlgorithmParams.h" |
13 #include "third_party/WebKit/public/platform/WebCryptoKeyAlgorithm.h" | 13 #include "third_party/WebKit/public/platform/WebCryptoKeyAlgorithm.h" |
14 | 14 |
15 namespace content { | 15 namespace content { |
16 | 16 |
17 namespace webcrypto { | 17 namespace webcrypto { |
18 | 18 |
19 const uint8* Uint8VectorStart(const std::vector<uint8>& data) { | 19 const uint8* Uint8VectorStart(const std::vector<uint8>& data) { |
20 if (data.empty()) | 20 if (data.empty()) |
21 return NULL; | 21 return NULL; |
22 return &data[0]; | 22 return &data[0]; |
23 } | 23 } |
24 | 24 |
25 void ShrinkBuffer(blink::WebArrayBuffer* buffer, unsigned int new_size) { | 25 uint8* Uint8VectorStart(std::vector<uint8>* data) { |
26 DCHECK_LE(new_size, buffer->byteLength()); | 26 if (data->empty()) |
27 | 27 return NULL; |
28 if (new_size == buffer->byteLength()) | 28 return &(*data)[0]; |
29 return; | |
30 | |
31 blink::WebArrayBuffer new_buffer = blink::WebArrayBuffer::create(new_size, 1); | |
32 DCHECK(!new_buffer.isNull()); | |
33 memcpy(new_buffer.data(), buffer->data(), new_size); | |
34 *buffer = new_buffer; | |
35 } | |
36 | |
37 blink::WebArrayBuffer CreateArrayBuffer(const uint8* data, | |
38 unsigned int data_size) { | |
39 blink::WebArrayBuffer buffer = blink::WebArrayBuffer::create(data_size, 1); | |
40 DCHECK(!buffer.isNull()); | |
41 if (data_size) // data_size == 0 might mean the data pointer is invalid | |
42 memcpy(buffer.data(), data, data_size); | |
43 return buffer; | |
44 } | 29 } |
45 | 30 |
46 // This function decodes unpadded 'base64url' encoded data, as described in | 31 // This function decodes unpadded 'base64url' encoded data, as described in |
47 // RFC4648 (http://www.ietf.org/rfc/rfc4648.txt) Section 5. To do this, first | 32 // RFC4648 (http://www.ietf.org/rfc/rfc4648.txt) Section 5. To do this, first |
48 // change the incoming data to 'base64' encoding by applying the appropriate | 33 // change the incoming data to 'base64' encoding by applying the appropriate |
49 // transformation including adding padding if required, and then call a base64 | 34 // transformation including adding padding if required, and then call a base64 |
50 // decoder. | 35 // decoder. |
51 bool Base64DecodeUrlSafe(const std::string& input, std::string* output) { | 36 bool Base64DecodeUrlSafe(const std::string& input, std::string* output) { |
52 std::string base64EncodedText(input); | 37 std::string base64EncodedText(input); |
53 std::replace(base64EncodedText.begin(), base64EncodedText.end(), '-', '+'); | 38 std::replace(base64EncodedText.begin(), base64EncodedText.end(), '-', '+'); |
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197 algorithm.id(), keylen_bytes * 8); | 182 algorithm.id(), keylen_bytes * 8); |
198 return true; | 183 return true; |
199 default: | 184 default: |
200 return false; | 185 return false; |
201 } | 186 } |
202 } | 187 } |
203 | 188 |
204 } // namespace webcrypto | 189 } // namespace webcrypto |
205 | 190 |
206 } // namespace content | 191 } // namespace content |
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