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<div class="title">widevine_key_source.cc</div> </div>
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">// Copyright 2014 Google Inc. All rights reserved.</span></div>
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<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">//</span></div>
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<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">// Use of this source code is governed by a BSD-style</span></div>
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<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">// license that can be found in the LICENSE file or at</span></div>
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<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment">// https://developers.google.com/open-source/licenses/bsd</span></div>
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<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> </div>
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<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="preprocessor">#include "packager/media/base/widevine_key_source.h"</span></div>
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<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> </div>
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<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="preprocessor">#include <set></span></div>
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<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> </div>
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<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="preprocessor">#include "packager/base/base64.h"</span></div>
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<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="preprocessor">#include "packager/base/bind.h"</span></div>
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<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="preprocessor">#include "packager/base/json/json_reader.h"</span></div>
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<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="preprocessor">#include "packager/base/json/json_writer.h"</span></div>
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<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="preprocessor">#include "packager/base/memory/ref_counted.h"</span></div>
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<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="preprocessor">#include "packager/base/stl_util.h"</span></div>
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<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="preprocessor">#include "packager/media/base/fixed_key_source.h"</span></div>
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<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="preprocessor">#include "packager/media/base/http_key_fetcher.h"</span></div>
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<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="preprocessor">#include "packager/media/base/producer_consumer_queue.h"</span></div>
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<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="preprocessor">#include "packager/media/base/protection_system_specific_info.h"</span></div>
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<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="preprocessor">#include "packager/media/base/rcheck.h"</span></div>
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<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="preprocessor">#include "packager/media/base/request_signer.h"</span></div>
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<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="preprocessor">#include "packager/media/base/widevine_pssh_data.pb.h"</span></div>
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<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> </div>
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<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="keyword">namespace </span>shaka {</div>
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<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="keyword">namespace </span>{</div>
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<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> </div>
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<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="keyword">const</span> <span class="keywordtype">bool</span> kEnableKeyRotation = <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> </div>
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<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="keyword">const</span> <span class="keywordtype">char</span> kLicenseStatusOK[] = <span class="stringliteral">"OK"</span>;</div>
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<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="comment">// Server may return INTERNAL_ERROR intermittently, which is a transient error</span></div>
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<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="comment">// and the next client request may succeed without problem.</span></div>
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<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="keyword">const</span> <span class="keywordtype">char</span> kLicenseStatusTransientError[] = <span class="stringliteral">"INTERNAL_ERROR"</span>;</div>
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<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> </div>
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<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="comment">// Number of times to retry requesting keys in case of a transient error from</span></div>
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<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="comment">// the server.</span></div>
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<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="keyword">const</span> <span class="keywordtype">int</span> kNumTransientErrorRetries = 5;</div>
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<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="keyword">const</span> <span class="keywordtype">int</span> kFirstRetryDelayMilliseconds = 1000;</div>
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<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> </div>
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<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="comment">// Default crypto period count, which is the number of keys to fetch on every</span></div>
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<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="comment">// key rotation enabled request.</span></div>
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<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="keyword">const</span> <span class="keywordtype">int</span> kDefaultCryptoPeriodCount = 10;</div>
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<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="keyword">const</span> <span class="keywordtype">int</span> kGetKeyTimeoutInSeconds = 5 * 60; <span class="comment">// 5 minutes.</span></div>
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<div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="keyword">const</span> <span class="keywordtype">int</span> kKeyFetchTimeoutInSeconds = 60; <span class="comment">// 1 minute.</span></div>
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<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> </div>
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<div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="keywordtype">bool</span> Base64StringToBytes(<span class="keyword">const</span> std::string& base64_string,</div>
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<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  std::vector<uint8_t>* bytes) {</div>
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<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  DCHECK(bytes);</div>
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<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  std::string str;</div>
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<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <span class="keywordflow">if</span> (!base::Base64Decode(base64_string, &str))</div>
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<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  bytes->assign(str.begin(), str.end());</div>
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<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00054"></a><span class="lineno"> 54</span> }</div>
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<div class="line"><a name="l00055"></a><span class="lineno"> 55</span> </div>
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<div class="line"><a name="l00056"></a><span class="lineno"> 56</span> <span class="keywordtype">void</span> BytesToBase64String(<span class="keyword">const</span> std::vector<uint8_t>& bytes,</div>
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<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  std::string* base64_string) {</div>
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<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  DCHECK(base64_string);</div>
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<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  base::Base64Encode(base::StringPiece(reinterpret_cast<const char*></div>
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<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  (bytes.data()), bytes.size()),</div>
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<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  base64_string);</div>
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<div class="line"><a name="l00062"></a><span class="lineno"> 62</span> }</div>
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<div class="line"><a name="l00063"></a><span class="lineno"> 63</span> </div>
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<div class="line"><a name="l00064"></a><span class="lineno"> 64</span> <span class="keywordtype">bool</span> GetKeyFromTrack(<span class="keyword">const</span> base::DictionaryValue& track_dict,</div>
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<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  std::vector<uint8_t>* key) {</div>
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<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  DCHECK(key);</div>
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<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  std::string key_base64_string;</div>
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<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  RCHECK(track_dict.GetString(<span class="stringliteral">"key"</span>, &key_base64_string));</div>
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<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  VLOG(2) << <span class="stringliteral">"Key:"</span> << key_base64_string;</div>
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<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  RCHECK(Base64StringToBytes(key_base64_string, key));</div>
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<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00072"></a><span class="lineno"> 72</span> }</div>
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<div class="line"><a name="l00073"></a><span class="lineno"> 73</span> </div>
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<div class="line"><a name="l00074"></a><span class="lineno"> 74</span> <span class="keywordtype">bool</span> GetKeyIdFromTrack(<span class="keyword">const</span> base::DictionaryValue& track_dict,</div>
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<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  std::vector<uint8_t>* key_id) {</div>
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<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  DCHECK(key_id);</div>
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<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  std::string key_id_base64_string;</div>
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<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  RCHECK(track_dict.GetString(<span class="stringliteral">"key_id"</span>, &key_id_base64_string));</div>
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<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  VLOG(2) << <span class="stringliteral">"Keyid:"</span> << key_id_base64_string;</div>
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<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  RCHECK(Base64StringToBytes(key_id_base64_string, key_id));</div>
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<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00082"></a><span class="lineno"> 82</span> }</div>
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<div class="line"><a name="l00083"></a><span class="lineno"> 83</span> </div>
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<div class="line"><a name="l00084"></a><span class="lineno"> 84</span> <span class="keywordtype">bool</span> GetPsshDataFromTrack(<span class="keyword">const</span> base::DictionaryValue& track_dict,</div>
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<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  std::vector<uint8_t>* pssh_data) {</div>
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<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  DCHECK(pssh_data);</div>
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<div class="line"><a name="l00087"></a><span class="lineno"> 87</span> </div>
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<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  <span class="keyword">const</span> base::ListValue* pssh_list;</div>
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<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  RCHECK(track_dict.GetList(<span class="stringliteral">"pssh"</span>, &pssh_list));</div>
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<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  <span class="comment">// Invariant check. We don't want to crash in release mode if possible.</span></div>
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<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  <span class="comment">// The following code handles it gracefully if GetSize() does not return 1.</span></div>
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<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  DCHECK_EQ(1u, pssh_list->GetSize());</div>
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<div class="line"><a name="l00093"></a><span class="lineno"> 93</span> </div>
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<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  <span class="keyword">const</span> base::DictionaryValue* pssh_dict;</div>
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<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  RCHECK(pssh_list->GetDictionary(0, &pssh_dict));</div>
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<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  std::string drm_type;</div>
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<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  RCHECK(pssh_dict->GetString(<span class="stringliteral">"drm_type"</span>, &drm_type));</div>
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<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  <span class="keywordflow">if</span> (drm_type != <span class="stringliteral">"WIDEVINE"</span>) {</div>
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<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  LOG(ERROR) << <span class="stringliteral">"Expecting drm_type 'WIDEVINE', get '"</span> << drm_type << <span class="stringliteral">"'."</span>;</div>
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<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  }</div>
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<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  std::string pssh_data_base64_string;</div>
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<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  RCHECK(pssh_dict->GetString(<span class="stringliteral">"data"</span>, &pssh_data_base64_string));</div>
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<div class="line"><a name="l00104"></a><span class="lineno"> 104</span> </div>
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<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  VLOG(2) << <span class="stringliteral">"Pssh Data:"</span> << pssh_data_base64_string;</div>
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<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  RCHECK(Base64StringToBytes(pssh_data_base64_string, pssh_data));</div>
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<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00108"></a><span class="lineno"> 108</span> }</div>
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<div class="line"><a name="l00109"></a><span class="lineno"> 109</span> </div>
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<div class="line"><a name="l00110"></a><span class="lineno"> 110</span> } <span class="comment">// namespace</span></div>
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<div class="line"><a name="l00111"></a><span class="lineno"> 111</span> </div>
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<div class="line"><a name="l00112"></a><span class="lineno"> 112</span> <span class="keyword">namespace </span>media {</div>
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<div class="line"><a name="l00113"></a><span class="lineno"> 113</span> </div>
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<div class="line"><a name="l00114"></a><span class="lineno"> 114</span> <span class="comment">// A ref counted wrapper for EncryptionKeyMap.</span></div>
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|
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span> <span class="keyword">class </span>WidevineKeySource::RefCountedEncryptionKeyMap</div>
|
|
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  : <span class="keyword">public</span> base::RefCountedThreadSafe<RefCountedEncryptionKeyMap> {</div>
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<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  <span class="keyword">public</span>:</div>
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<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  <span class="keyword">explicit</span> RefCountedEncryptionKeyMap(EncryptionKeyMap* encryption_key_map) {</div>
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<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  DCHECK(encryption_key_map);</div>
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<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  encryption_key_map_.swap(*encryption_key_map);</div>
|
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<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  }</div>
|
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<div class="line"><a name="l00122"></a><span class="lineno"> 122</span> </div>
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<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  std::map<KeySource::TrackType, EncryptionKey*>& map() {</div>
|
|
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  <span class="keywordflow">return</span> encryption_key_map_;</div>
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<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  }</div>
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<div class="line"><a name="l00126"></a><span class="lineno"> 126</span> </div>
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<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  <span class="keyword">private</span>:</div>
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<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  <span class="keyword">friend</span> <span class="keyword">class </span>base::RefCountedThreadSafe<RefCountedEncryptionKeyMap>;</div>
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<div class="line"><a name="l00129"></a><span class="lineno"> 129</span> </div>
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<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  ~RefCountedEncryptionKeyMap() { STLDeleteValues(&encryption_key_map_); }</div>
|
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<div class="line"><a name="l00131"></a><span class="lineno"> 131</span> </div>
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<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  EncryptionKeyMap encryption_key_map_;</div>
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<div class="line"><a name="l00133"></a><span class="lineno"> 133</span> </div>
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<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  DISALLOW_COPY_AND_ASSIGN(RefCountedEncryptionKeyMap);</div>
|
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<div class="line"><a name="l00135"></a><span class="lineno"> 135</span> };</div>
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<div class="line"><a name="l00136"></a><span class="lineno"> 136</span> </div>
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<div class="line"><a name="l00137"></a><span class="lineno"><a class="line" href="../../da/ddd/classshaka_1_1media_1_1WidevineKeySource.html#a93480a98e423d0456482844ac629bd2e"> 137</a></span> <a class="code" href="../../da/ddd/classshaka_1_1media_1_1WidevineKeySource.html#a93480a98e423d0456482844ac629bd2e">WidevineKeySource::WidevineKeySource</a>(<span class="keyword">const</span> std::string& server_url,</div>
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<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  <span class="keywordtype">bool</span> add_common_pssh)</div>
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<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  : key_production_thread_(<span class="stringliteral">"KeyProductionThread"</span>,</div>
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<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  base::Bind(&<a class="code" href="../../da/ddd/classshaka_1_1media_1_1WidevineKeySource.html">WidevineKeySource</a>::FetchKeysTask,</div>
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<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  base::Unretained(this))),</div>
|
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<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  key_fetcher_(new <a class="code" href="../../d7/de0/classshaka_1_1media_1_1HttpKeyFetcher.html">HttpKeyFetcher</a>(kKeyFetchTimeoutInSeconds)),</div>
|
|
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  server_url_(server_url),</div>
|
|
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  crypto_period_count_(kDefaultCryptoPeriodCount),</div>
|
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<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  add_common_pssh_(add_common_pssh),</div>
|
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<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  key_production_started_(false),</div>
|
|
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  start_key_production_(false, false),</div>
|
|
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  first_crypto_period_index_(0) {</div>
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|
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  key_production_thread_.Start();</div>
|
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<div class="line"><a name="l00150"></a><span class="lineno"> 150</span> }</div>
|
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<div class="line"><a name="l00151"></a><span class="lineno"> 151</span> </div>
|
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<div class="line"><a name="l00152"></a><span class="lineno"> 152</span> WidevineKeySource::~WidevineKeySource() {</div>
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<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  <span class="keywordflow">if</span> (key_pool_)</div>
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<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  key_pool_->Stop();</div>
|
|
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  <span class="keywordflow">if</span> (key_production_thread_.HasBeenStarted()) {</div>
|
|
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  <span class="comment">// Signal the production thread to start key production if it is not</span></div>
|
|
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  <span class="comment">// signaled yet so the thread can be joined.</span></div>
|
|
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  start_key_production_.Signal();</div>
|
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<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  key_production_thread_.Join();</div>
|
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<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  }</div>
|
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<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  STLDeleteValues(&encryption_key_map_);</div>
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<div class="line"><a name="l00162"></a><span class="lineno"> 162</span> }</div>
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<div class="line"><a name="l00163"></a><span class="lineno"> 163</span> </div>
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<div class="line"><a name="l00164"></a><span class="lineno"><a class="line" href="../../da/ddd/classshaka_1_1media_1_1WidevineKeySource.html#a6fb9680be887d3b9367e015029f909f2"> 164</a></span> <a class="code" href="../../d0/d93/classshaka_1_1media_1_1Status.html">Status</a> <a class="code" href="../../da/ddd/classshaka_1_1media_1_1WidevineKeySource.html#ae6490d21a6538b9c909fdf996398e576">WidevineKeySource::FetchKeys</a>(<span class="keyword">const</span> std::vector<uint8_t>& content_id,</div>
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<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  <span class="keyword">const</span> std::string& policy) {</div>
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<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  base::AutoLock scoped_lock(lock_);</div>
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<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  request_dict_.Clear();</div>
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|
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  std::string content_id_base64_string;</div>
|
|
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  BytesToBase64String(content_id, &content_id_base64_string);</div>
|
|
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  request_dict_.SetString(<span class="stringliteral">"content_id"</span>, content_id_base64_string);</div>
|
|
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  request_dict_.SetString(<span class="stringliteral">"policy"</span>, policy);</div>
|
|
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  <span class="keywordflow">return</span> FetchKeysInternal(!kEnableKeyRotation, 0, <span class="keyword">false</span>);</div>
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|
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span> }</div>
|
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<div class="line"><a name="l00174"></a><span class="lineno"> 174</span> </div>
|
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<div class="line"><a name="l00175"></a><span class="lineno"><a class="line" href="../../da/ddd/classshaka_1_1media_1_1WidevineKeySource.html#ae6490d21a6538b9c909fdf996398e576"> 175</a></span> <a class="code" href="../../d0/d93/classshaka_1_1media_1_1Status.html">Status</a> <a class="code" href="../../da/ddd/classshaka_1_1media_1_1WidevineKeySource.html#ae6490d21a6538b9c909fdf996398e576">WidevineKeySource::FetchKeys</a>(<span class="keyword">const</span> std::vector<uint8_t>& pssh_box) {</div>
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|
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  <span class="keyword">const</span> std::vector<uint8_t> widevine_system_id(</div>
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<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  kWidevineSystemId, kWidevineSystemId + arraysize(kWidevineSystemId));</div>
|
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<div class="line"><a name="l00178"></a><span class="lineno"> 178</span> </div>
|
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<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  <a class="code" href="../../d0/dd4/classshaka_1_1media_1_1ProtectionSystemSpecificInfo.html">ProtectionSystemSpecificInfo</a> info;</div>
|
|
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  <span class="keywordflow">if</span> (!info.<a class="code" href="../../d0/dd4/classshaka_1_1media_1_1ProtectionSystemSpecificInfo.html#a13b0f93b68efff614c5356df081f2560">Parse</a>(pssh_box.data(), pssh_box.size()))</div>
|
|
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  <span class="keywordflow">return</span> <a class="code" href="../../d0/d93/classshaka_1_1media_1_1Status.html">Status</a>(error::PARSER_FAILURE, <span class="stringliteral">"Error parsing the PSSH box."</span>);</div>
|
|
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span> </div>
|
|
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  <span class="keywordflow">if</span> (info.system_id() == widevine_system_id) {</div>
|
|
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  base::AutoLock scoped_lock(lock_);</div>
|
|
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  request_dict_.Clear();</div>
|
|
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  std::string pssh_data_base64_string;</div>
|
|
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span> </div>
|
|
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  BytesToBase64String(info.pssh_data(), &pssh_data_base64_string);</div>
|
|
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  request_dict_.SetString(<span class="stringliteral">"pssh_data"</span>, pssh_data_base64_string);</div>
|
|
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  <span class="keywordflow">return</span> FetchKeysInternal(!kEnableKeyRotation, 0, <span class="keyword">false</span>);</div>
|
|
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (!info.key_ids().empty()) {</div>
|
|
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  <span class="comment">// This is not a Widevine PSSH box. Try making the request for the key-IDs.</span></div>
|
|
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  <span class="comment">// Even if this is a different key-system, it should still work. Either</span></div>
|
|
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  <span class="comment">// the server will not recognize it and return an error, or it will</span></div>
|
|
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  <span class="comment">// recognize it and the key must be correct (or the content is bad).</span></div>
|
|
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  <span class="keywordflow">return</span> <a class="code" href="../../da/ddd/classshaka_1_1media_1_1WidevineKeySource.html#ae6490d21a6538b9c909fdf996398e576">FetchKeys</a>(info.key_ids());</div>
|
|
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  <span class="keywordflow">return</span> <a class="code" href="../../d0/d93/classshaka_1_1media_1_1Status.html">Status</a>(error::NOT_FOUND, <span class="stringliteral">"No key IDs given in PSSH box."</span>);</div>
|
|
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  }</div>
|
|
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span> }</div>
|
|
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span> </div>
|
|
<div class="line"><a name="l00202"></a><span class="lineno"><a class="line" href="../../da/ddd/classshaka_1_1media_1_1WidevineKeySource.html#ae202f5af8c11fe3abe9f7b882ac57513"> 202</a></span> <a class="code" href="../../d0/d93/classshaka_1_1media_1_1Status.html">Status</a> <a class="code" href="../../da/ddd/classshaka_1_1media_1_1WidevineKeySource.html#ae6490d21a6538b9c909fdf996398e576">WidevineKeySource::FetchKeys</a>(</div>
|
|
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  <span class="keyword">const</span> std::vector<std::vector<uint8_t>>& key_ids) {</div>
|
|
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  base::AutoLock scoped_lock(lock_);</div>
|
|
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  request_dict_.Clear();</div>
|
|
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  std::string pssh_data_base64_string;</div>
|
|
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span> </div>
|
|
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  <span class="comment">// Generate Widevine PSSH data from the key-IDs.</span></div>
|
|
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  WidevinePsshData widevine_pssh_data;</div>
|
|
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = 0; i < key_ids.size(); i++) {</div>
|
|
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  widevine_pssh_data.add_key_id(key_ids[i].data(), key_ids[i].size());</div>
|
|
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  }</div>
|
|
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span> </div>
|
|
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  <span class="keyword">const</span> std::string serialized_string = widevine_pssh_data.SerializeAsString();</div>
|
|
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  std::vector<uint8_t> pssh_data(serialized_string.begin(),</div>
|
|
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  serialized_string.end());</div>
|
|
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span> </div>
|
|
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  BytesToBase64String(pssh_data, &pssh_data_base64_string);</div>
|
|
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  request_dict_.SetString(<span class="stringliteral">"pssh_data"</span>, pssh_data_base64_string);</div>
|
|
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  <span class="keywordflow">return</span> FetchKeysInternal(!kEnableKeyRotation, 0, <span class="keyword">false</span>);</div>
|
|
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span> }</div>
|
|
<div class="line"><a name="l00222"></a><span class="lineno"> 222</span> </div>
|
|
<div class="line"><a name="l00223"></a><span class="lineno"><a class="line" href="../../da/ddd/classshaka_1_1media_1_1WidevineKeySource.html#ac0be37455c1ec0a7d177e6b78dd5a58e"> 223</a></span> <a class="code" href="../../d0/d93/classshaka_1_1media_1_1Status.html">Status</a> <a class="code" href="../../da/ddd/classshaka_1_1media_1_1WidevineKeySource.html#ae6490d21a6538b9c909fdf996398e576">WidevineKeySource::FetchKeys</a>(uint32_t asset_id) {</div>
|
|
<div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  base::AutoLock scoped_lock(lock_);</div>
|
|
<div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  request_dict_.Clear();</div>
|
|
<div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  <span class="comment">// Javascript/JSON does not support int64_t or unsigned numbers. Use double</span></div>
|
|
<div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  <span class="comment">// instead as 32-bit integer can be lossless represented using double.</span></div>
|
|
<div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  request_dict_.SetDouble(<span class="stringliteral">"asset_id"</span>, asset_id);</div>
|
|
<div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  <span class="keywordflow">return</span> FetchKeysInternal(!kEnableKeyRotation, 0, <span class="keyword">true</span>);</div>
|
|
<div class="line"><a name="l00230"></a><span class="lineno"> 230</span> }</div>
|
|
<div class="line"><a name="l00231"></a><span class="lineno"> 231</span> </div>
|
|
<div class="line"><a name="l00232"></a><span class="lineno"><a class="line" href="../../da/ddd/classshaka_1_1media_1_1WidevineKeySource.html#a59a16d61c6a6d05745e8b49fd3618deb"> 232</a></span> <a class="code" href="../../d0/d93/classshaka_1_1media_1_1Status.html">Status</a> <a class="code" href="../../da/ddd/classshaka_1_1media_1_1WidevineKeySource.html#a59a16d61c6a6d05745e8b49fd3618deb">WidevineKeySource::GetKey</a>(TrackType track_type, <a class="code" href="../../dd/dbd/structshaka_1_1media_1_1EncryptionKey.html">EncryptionKey</a>* key) {</div>
|
|
<div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  DCHECK(key);</div>
|
|
<div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  <span class="keywordflow">if</span> (encryption_key_map_.find(track_type) == encryption_key_map_.end()) {</div>
|
|
<div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  <span class="keywordflow">return</span> <a class="code" href="../../d0/d93/classshaka_1_1media_1_1Status.html">Status</a>(error::INTERNAL_ERROR,</div>
|
|
<div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  <span class="stringliteral">"Cannot find key of type "</span> + <a class="code" href="../../d1/d1f/classshaka_1_1media_1_1KeySource.html#a4f9cede7a8c1678e1fac93c8fe12aa75">TrackTypeToString</a>(track_type));</div>
|
|
<div class="line"><a name="l00237"></a><span class="lineno"> 237</span>  }</div>
|
|
<div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  *key = *encryption_key_map_[track_type];</div>
|
|
<div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  <span class="keywordflow">return</span> Status::OK;</div>
|
|
<div class="line"><a name="l00240"></a><span class="lineno"> 240</span> }</div>
|
|
<div class="line"><a name="l00241"></a><span class="lineno"> 241</span> </div>
|
|
<div class="line"><a name="l00242"></a><span class="lineno"><a class="line" href="../../da/ddd/classshaka_1_1media_1_1WidevineKeySource.html#a59699cd998290adae74e6596ba44fdc3"> 242</a></span> <a class="code" href="../../d0/d93/classshaka_1_1media_1_1Status.html">Status</a> <a class="code" href="../../da/ddd/classshaka_1_1media_1_1WidevineKeySource.html#a59a16d61c6a6d05745e8b49fd3618deb">WidevineKeySource::GetKey</a>(<span class="keyword">const</span> std::vector<uint8_t>& key_id,</div>
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|
<div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  <a class="code" href="../../dd/dbd/structshaka_1_1media_1_1EncryptionKey.html">EncryptionKey</a>* key) {</div>
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|
<div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  DCHECK(key);</div>
|
|
<div class="line"><a name="l00245"></a><span class="lineno"> 245</span>  <span class="keywordflow">for</span> (std::map<TrackType, EncryptionKey*>::iterator iter =</div>
|
|
<div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  encryption_key_map_.begin();</div>
|
|
<div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  iter != encryption_key_map_.end();</div>
|
|
<div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  ++iter) {</div>
|
|
<div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  <span class="keywordflow">if</span> (iter->second->key_id == key_id) {</div>
|
|
<div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  *key = *iter->second;</div>
|
|
<div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  <span class="keywordflow">return</span> Status::OK;</div>
|
|
<div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  }</div>
|
|
<div class="line"><a name="l00253"></a><span class="lineno"> 253</span>  }</div>
|
|
<div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  <span class="keywordflow">return</span> <a class="code" href="../../d0/d93/classshaka_1_1media_1_1Status.html">Status</a>(error::INTERNAL_ERROR,</div>
|
|
<div class="line"><a name="l00255"></a><span class="lineno"> 255</span>  <span class="stringliteral">"Cannot find key with specified key ID"</span>);</div>
|
|
<div class="line"><a name="l00256"></a><span class="lineno"> 256</span> }</div>
|
|
<div class="line"><a name="l00257"></a><span class="lineno"> 257</span> </div>
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<div class="line"><a name="l00258"></a><span class="lineno"><a class="line" href="../../da/ddd/classshaka_1_1media_1_1WidevineKeySource.html#ab56a71e9f9f9e545f96e667279c05bb1"> 258</a></span> <a class="code" href="../../d0/d93/classshaka_1_1media_1_1Status.html">Status</a> <a class="code" href="../../da/ddd/classshaka_1_1media_1_1WidevineKeySource.html#ab56a71e9f9f9e545f96e667279c05bb1">WidevineKeySource::GetCryptoPeriodKey</a>(uint32_t crypto_period_index,</div>
|
|
<div class="line"><a name="l00259"></a><span class="lineno"> 259</span>  TrackType track_type,</div>
|
|
<div class="line"><a name="l00260"></a><span class="lineno"> 260</span>  <a class="code" href="../../dd/dbd/structshaka_1_1media_1_1EncryptionKey.html">EncryptionKey</a>* key) {</div>
|
|
<div class="line"><a name="l00261"></a><span class="lineno"> 261</span>  DCHECK(key_production_thread_.HasBeenStarted());</div>
|
|
<div class="line"><a name="l00262"></a><span class="lineno"> 262</span>  <span class="comment">// TODO(kqyang): This is not elegant. Consider refactoring later.</span></div>
|
|
<div class="line"><a name="l00263"></a><span class="lineno"> 263</span>  {</div>
|
|
<div class="line"><a name="l00264"></a><span class="lineno"> 264</span>  base::AutoLock scoped_lock(lock_);</div>
|
|
<div class="line"><a name="l00265"></a><span class="lineno"> 265</span>  <span class="keywordflow">if</span> (!key_production_started_) {</div>
|
|
<div class="line"><a name="l00266"></a><span class="lineno"> 266</span>  <span class="comment">// Another client may have a slightly smaller starting crypto period</span></div>
|
|
<div class="line"><a name="l00267"></a><span class="lineno"> 267</span>  <span class="comment">// index. Set the initial value to account for that.</span></div>
|
|
<div class="line"><a name="l00268"></a><span class="lineno"> 268</span>  first_crypto_period_index_ =</div>
|
|
<div class="line"><a name="l00269"></a><span class="lineno"> 269</span>  crypto_period_index ? crypto_period_index - 1 : 0;</div>
|
|
<div class="line"><a name="l00270"></a><span class="lineno"> 270</span>  DCHECK(!key_pool_);</div>
|
|
<div class="line"><a name="l00271"></a><span class="lineno"> 271</span>  key_pool_.reset(<span class="keyword">new</span> <a class="code" href="../../d5/d33/classshaka_1_1media_1_1ProducerConsumerQueue.html">EncryptionKeyQueue</a>(crypto_period_count_,</div>
|
|
<div class="line"><a name="l00272"></a><span class="lineno"> 272</span>  first_crypto_period_index_));</div>
|
|
<div class="line"><a name="l00273"></a><span class="lineno"> 273</span>  start_key_production_.Signal();</div>
|
|
<div class="line"><a name="l00274"></a><span class="lineno"> 274</span>  key_production_started_ = <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00275"></a><span class="lineno"> 275</span>  }</div>
|
|
<div class="line"><a name="l00276"></a><span class="lineno"> 276</span>  }</div>
|
|
<div class="line"><a name="l00277"></a><span class="lineno"> 277</span>  <span class="keywordflow">return</span> GetKeyInternal(crypto_period_index, track_type, key);</div>
|
|
<div class="line"><a name="l00278"></a><span class="lineno"> 278</span> }</div>
|
|
<div class="line"><a name="l00279"></a><span class="lineno"> 279</span> </div>
|
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<div class="line"><a name="l00280"></a><span class="lineno"><a class="line" href="../../da/ddd/classshaka_1_1media_1_1WidevineKeySource.html#abdff0d3cc5f59b744c68b11b0c1f6272"> 280</a></span> <span class="keywordtype">void</span> <a class="code" href="../../da/ddd/classshaka_1_1media_1_1WidevineKeySource.html#abdff0d3cc5f59b744c68b11b0c1f6272">WidevineKeySource::set_signer</a>(scoped_ptr<RequestSigner> signer) {</div>
|
|
<div class="line"><a name="l00281"></a><span class="lineno"> 281</span>  signer_ = signer.Pass();</div>
|
|
<div class="line"><a name="l00282"></a><span class="lineno"> 282</span> }</div>
|
|
<div class="line"><a name="l00283"></a><span class="lineno"> 283</span> </div>
|
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<div class="line"><a name="l00284"></a><span class="lineno"><a class="line" href="../../da/ddd/classshaka_1_1media_1_1WidevineKeySource.html#afc5154b2994b5fe1f8f0c494bbd2bcdd"> 284</a></span> <span class="keywordtype">void</span> <a class="code" href="../../da/ddd/classshaka_1_1media_1_1WidevineKeySource.html#afc5154b2994b5fe1f8f0c494bbd2bcdd">WidevineKeySource::set_key_fetcher</a>(scoped_ptr<KeyFetcher> key_fetcher) {</div>
|
|
<div class="line"><a name="l00285"></a><span class="lineno"> 285</span>  key_fetcher_ = key_fetcher.Pass();</div>
|
|
<div class="line"><a name="l00286"></a><span class="lineno"> 286</span> }</div>
|
|
<div class="line"><a name="l00287"></a><span class="lineno"> 287</span> </div>
|
|
<div class="line"><a name="l00288"></a><span class="lineno"> 288</span> <a class="code" href="../../d0/d93/classshaka_1_1media_1_1Status.html">Status</a> WidevineKeySource::GetKeyInternal(uint32_t crypto_period_index,</div>
|
|
<div class="line"><a name="l00289"></a><span class="lineno"> 289</span>  TrackType track_type,</div>
|
|
<div class="line"><a name="l00290"></a><span class="lineno"> 290</span>  <a class="code" href="../../dd/dbd/structshaka_1_1media_1_1EncryptionKey.html">EncryptionKey</a>* key) {</div>
|
|
<div class="line"><a name="l00291"></a><span class="lineno"> 291</span>  DCHECK(key_pool_);</div>
|
|
<div class="line"><a name="l00292"></a><span class="lineno"> 292</span>  DCHECK(key);</div>
|
|
<div class="line"><a name="l00293"></a><span class="lineno"> 293</span>  DCHECK_LE(track_type, NUM_VALID_TRACK_TYPES);</div>
|
|
<div class="line"><a name="l00294"></a><span class="lineno"> 294</span>  DCHECK_NE(track_type, TRACK_TYPE_UNKNOWN);</div>
|
|
<div class="line"><a name="l00295"></a><span class="lineno"> 295</span> </div>
|
|
<div class="line"><a name="l00296"></a><span class="lineno"> 296</span>  scoped_refptr<RefCountedEncryptionKeyMap> ref_counted_encryption_key_map;</div>
|
|
<div class="line"><a name="l00297"></a><span class="lineno"> 297</span>  <a class="code" href="../../d0/d93/classshaka_1_1media_1_1Status.html">Status</a> status =</div>
|
|
<div class="line"><a name="l00298"></a><span class="lineno"> 298</span>  key_pool_->Peek(crypto_period_index, &ref_counted_encryption_key_map,</div>
|
|
<div class="line"><a name="l00299"></a><span class="lineno"> 299</span>  kGetKeyTimeoutInSeconds * 1000);</div>
|
|
<div class="line"><a name="l00300"></a><span class="lineno"> 300</span>  <span class="keywordflow">if</span> (!status.ok()) {</div>
|
|
<div class="line"><a name="l00301"></a><span class="lineno"> 301</span>  <span class="keywordflow">if</span> (status.error_code() == error::STOPPED) {</div>
|
|
<div class="line"><a name="l00302"></a><span class="lineno"> 302</span>  CHECK(!common_encryption_request_status_.ok());</div>
|
|
<div class="line"><a name="l00303"></a><span class="lineno"> 303</span>  <span class="keywordflow">return</span> common_encryption_request_status_;</div>
|
|
<div class="line"><a name="l00304"></a><span class="lineno"> 304</span>  }</div>
|
|
<div class="line"><a name="l00305"></a><span class="lineno"> 305</span>  <span class="keywordflow">return</span> status;</div>
|
|
<div class="line"><a name="l00306"></a><span class="lineno"> 306</span>  }</div>
|
|
<div class="line"><a name="l00307"></a><span class="lineno"> 307</span> </div>
|
|
<div class="line"><a name="l00308"></a><span class="lineno"> 308</span>  EncryptionKeyMap& encryption_key_map = ref_counted_encryption_key_map->map();</div>
|
|
<div class="line"><a name="l00309"></a><span class="lineno"> 309</span>  <span class="keywordflow">if</span> (encryption_key_map.find(track_type) == encryption_key_map.end()) {</div>
|
|
<div class="line"><a name="l00310"></a><span class="lineno"> 310</span>  <span class="keywordflow">return</span> Status(error::INTERNAL_ERROR,</div>
|
|
<div class="line"><a name="l00311"></a><span class="lineno"> 311</span>  <span class="stringliteral">"Cannot find key of type "</span> + <a class="code" href="../../d1/d1f/classshaka_1_1media_1_1KeySource.html#a4f9cede7a8c1678e1fac93c8fe12aa75">TrackTypeToString</a>(track_type));</div>
|
|
<div class="line"><a name="l00312"></a><span class="lineno"> 312</span>  }</div>
|
|
<div class="line"><a name="l00313"></a><span class="lineno"> 313</span>  *key = *encryption_key_map[track_type];</div>
|
|
<div class="line"><a name="l00314"></a><span class="lineno"> 314</span>  <span class="keywordflow">return</span> Status::OK;</div>
|
|
<div class="line"><a name="l00315"></a><span class="lineno"> 315</span> }</div>
|
|
<div class="line"><a name="l00316"></a><span class="lineno"> 316</span> </div>
|
|
<div class="line"><a name="l00317"></a><span class="lineno"> 317</span> <span class="keywordtype">void</span> WidevineKeySource::FetchKeysTask() {</div>
|
|
<div class="line"><a name="l00318"></a><span class="lineno"> 318</span>  <span class="comment">// Wait until key production is signaled.</span></div>
|
|
<div class="line"><a name="l00319"></a><span class="lineno"> 319</span>  start_key_production_.Wait();</div>
|
|
<div class="line"><a name="l00320"></a><span class="lineno"> 320</span>  <span class="keywordflow">if</span> (!key_pool_ || key_pool_->Stopped())</div>
|
|
<div class="line"><a name="l00321"></a><span class="lineno"> 321</span>  <span class="keywordflow">return</span>;</div>
|
|
<div class="line"><a name="l00322"></a><span class="lineno"> 322</span> </div>
|
|
<div class="line"><a name="l00323"></a><span class="lineno"> 323</span>  Status status = FetchKeysInternal(kEnableKeyRotation,</div>
|
|
<div class="line"><a name="l00324"></a><span class="lineno"> 324</span>  first_crypto_period_index_,</div>
|
|
<div class="line"><a name="l00325"></a><span class="lineno"> 325</span>  <span class="keyword">false</span>);</div>
|
|
<div class="line"><a name="l00326"></a><span class="lineno"> 326</span>  <span class="keywordflow">while</span> (status.ok()) {</div>
|
|
<div class="line"><a name="l00327"></a><span class="lineno"> 327</span>  first_crypto_period_index_ += crypto_period_count_;</div>
|
|
<div class="line"><a name="l00328"></a><span class="lineno"> 328</span>  status = FetchKeysInternal(kEnableKeyRotation,</div>
|
|
<div class="line"><a name="l00329"></a><span class="lineno"> 329</span>  first_crypto_period_index_,</div>
|
|
<div class="line"><a name="l00330"></a><span class="lineno"> 330</span>  <span class="keyword">false</span>);</div>
|
|
<div class="line"><a name="l00331"></a><span class="lineno"> 331</span>  }</div>
|
|
<div class="line"><a name="l00332"></a><span class="lineno"> 332</span>  common_encryption_request_status_ = status;</div>
|
|
<div class="line"><a name="l00333"></a><span class="lineno"> 333</span>  key_pool_->Stop();</div>
|
|
<div class="line"><a name="l00334"></a><span class="lineno"> 334</span> }</div>
|
|
<div class="line"><a name="l00335"></a><span class="lineno"> 335</span> </div>
|
|
<div class="line"><a name="l00336"></a><span class="lineno"> 336</span> Status WidevineKeySource::FetchKeysInternal(<span class="keywordtype">bool</span> enable_key_rotation,</div>
|
|
<div class="line"><a name="l00337"></a><span class="lineno"> 337</span>  uint32_t first_crypto_period_index,</div>
|
|
<div class="line"><a name="l00338"></a><span class="lineno"> 338</span>  <span class="keywordtype">bool</span> widevine_classic) {</div>
|
|
<div class="line"><a name="l00339"></a><span class="lineno"> 339</span>  std::string request;</div>
|
|
<div class="line"><a name="l00340"></a><span class="lineno"> 340</span>  FillRequest(enable_key_rotation,</div>
|
|
<div class="line"><a name="l00341"></a><span class="lineno"> 341</span>  first_crypto_period_index,</div>
|
|
<div class="line"><a name="l00342"></a><span class="lineno"> 342</span>  &request);</div>
|
|
<div class="line"><a name="l00343"></a><span class="lineno"> 343</span> </div>
|
|
<div class="line"><a name="l00344"></a><span class="lineno"> 344</span>  std::string message;</div>
|
|
<div class="line"><a name="l00345"></a><span class="lineno"> 345</span>  Status status = GenerateKeyMessage(request, &message);</div>
|
|
<div class="line"><a name="l00346"></a><span class="lineno"> 346</span>  <span class="keywordflow">if</span> (!status.ok())</div>
|
|
<div class="line"><a name="l00347"></a><span class="lineno"> 347</span>  <span class="keywordflow">return</span> status;</div>
|
|
<div class="line"><a name="l00348"></a><span class="lineno"> 348</span>  VLOG(1) << <span class="stringliteral">"Message: "</span> << message;</div>
|
|
<div class="line"><a name="l00349"></a><span class="lineno"> 349</span> </div>
|
|
<div class="line"><a name="l00350"></a><span class="lineno"> 350</span>  std::string raw_response;</div>
|
|
<div class="line"><a name="l00351"></a><span class="lineno"> 351</span>  int64_t sleep_duration = kFirstRetryDelayMilliseconds;</div>
|
|
<div class="line"><a name="l00352"></a><span class="lineno"> 352</span> </div>
|
|
<div class="line"><a name="l00353"></a><span class="lineno"> 353</span>  <span class="comment">// Perform client side retries if seeing server transient error to workaround</span></div>
|
|
<div class="line"><a name="l00354"></a><span class="lineno"> 354</span>  <span class="comment">// server limitation.</span></div>
|
|
<div class="line"><a name="l00355"></a><span class="lineno"> 355</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < kNumTransientErrorRetries; ++i) {</div>
|
|
<div class="line"><a name="l00356"></a><span class="lineno"> 356</span>  status = key_fetcher_->FetchKeys(server_url_, message, &raw_response);</div>
|
|
<div class="line"><a name="l00357"></a><span class="lineno"> 357</span>  <span class="keywordflow">if</span> (status.ok()) {</div>
|
|
<div class="line"><a name="l00358"></a><span class="lineno"> 358</span>  VLOG(1) << <span class="stringliteral">"Retry ["</span> << i << <span class="stringliteral">"] Response:"</span> << raw_response;</div>
|
|
<div class="line"><a name="l00359"></a><span class="lineno"> 359</span> </div>
|
|
<div class="line"><a name="l00360"></a><span class="lineno"> 360</span>  std::string response;</div>
|
|
<div class="line"><a name="l00361"></a><span class="lineno"> 361</span>  <span class="keywordflow">if</span> (!DecodeResponse(raw_response, &response)) {</div>
|
|
<div class="line"><a name="l00362"></a><span class="lineno"> 362</span>  <span class="keywordflow">return</span> Status(error::SERVER_ERROR,</div>
|
|
<div class="line"><a name="l00363"></a><span class="lineno"> 363</span>  <span class="stringliteral">"Failed to decode response '"</span> + raw_response + <span class="stringliteral">"'."</span>);</div>
|
|
<div class="line"><a name="l00364"></a><span class="lineno"> 364</span>  }</div>
|
|
<div class="line"><a name="l00365"></a><span class="lineno"> 365</span> </div>
|
|
<div class="line"><a name="l00366"></a><span class="lineno"> 366</span>  <span class="keywordtype">bool</span> transient_error = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00367"></a><span class="lineno"> 367</span>  <span class="keywordflow">if</span> (ExtractEncryptionKey(enable_key_rotation,</div>
|
|
<div class="line"><a name="l00368"></a><span class="lineno"> 368</span>  widevine_classic,</div>
|
|
<div class="line"><a name="l00369"></a><span class="lineno"> 369</span>  response,</div>
|
|
<div class="line"><a name="l00370"></a><span class="lineno"> 370</span>  &transient_error))</div>
|
|
<div class="line"><a name="l00371"></a><span class="lineno"> 371</span>  <span class="keywordflow">return</span> Status::OK;</div>
|
|
<div class="line"><a name="l00372"></a><span class="lineno"> 372</span> </div>
|
|
<div class="line"><a name="l00373"></a><span class="lineno"> 373</span>  <span class="keywordflow">if</span> (!transient_error) {</div>
|
|
<div class="line"><a name="l00374"></a><span class="lineno"> 374</span>  <span class="keywordflow">return</span> Status(</div>
|
|
<div class="line"><a name="l00375"></a><span class="lineno"> 375</span>  error::SERVER_ERROR,</div>
|
|
<div class="line"><a name="l00376"></a><span class="lineno"> 376</span>  <span class="stringliteral">"Failed to extract encryption key from '"</span> + response + <span class="stringliteral">"'."</span>);</div>
|
|
<div class="line"><a name="l00377"></a><span class="lineno"> 377</span>  }</div>
|
|
<div class="line"><a name="l00378"></a><span class="lineno"> 378</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (status.error_code() != error::TIME_OUT) {</div>
|
|
<div class="line"><a name="l00379"></a><span class="lineno"> 379</span>  <span class="keywordflow">return</span> status;</div>
|
|
<div class="line"><a name="l00380"></a><span class="lineno"> 380</span>  }</div>
|
|
<div class="line"><a name="l00381"></a><span class="lineno"> 381</span> </div>
|
|
<div class="line"><a name="l00382"></a><span class="lineno"> 382</span>  <span class="comment">// Exponential backoff.</span></div>
|
|
<div class="line"><a name="l00383"></a><span class="lineno"> 383</span>  <span class="keywordflow">if</span> (i != kNumTransientErrorRetries - 1) {</div>
|
|
<div class="line"><a name="l00384"></a><span class="lineno"> 384</span>  base::PlatformThread::Sleep(</div>
|
|
<div class="line"><a name="l00385"></a><span class="lineno"> 385</span>  base::TimeDelta::FromMilliseconds(sleep_duration));</div>
|
|
<div class="line"><a name="l00386"></a><span class="lineno"> 386</span>  sleep_duration *= 2;</div>
|
|
<div class="line"><a name="l00387"></a><span class="lineno"> 387</span>  }</div>
|
|
<div class="line"><a name="l00388"></a><span class="lineno"> 388</span>  }</div>
|
|
<div class="line"><a name="l00389"></a><span class="lineno"> 389</span>  <span class="keywordflow">return</span> Status(error::SERVER_ERROR,</div>
|
|
<div class="line"><a name="l00390"></a><span class="lineno"> 390</span>  <span class="stringliteral">"Failed to recover from server internal error."</span>);</div>
|
|
<div class="line"><a name="l00391"></a><span class="lineno"> 391</span> }</div>
|
|
<div class="line"><a name="l00392"></a><span class="lineno"> 392</span> </div>
|
|
<div class="line"><a name="l00393"></a><span class="lineno"> 393</span> <span class="keywordtype">void</span> WidevineKeySource::FillRequest(<span class="keywordtype">bool</span> enable_key_rotation,</div>
|
|
<div class="line"><a name="l00394"></a><span class="lineno"> 394</span>  uint32_t first_crypto_period_index,</div>
|
|
<div class="line"><a name="l00395"></a><span class="lineno"> 395</span>  std::string* request) {</div>
|
|
<div class="line"><a name="l00396"></a><span class="lineno"> 396</span>  DCHECK(request);</div>
|
|
<div class="line"><a name="l00397"></a><span class="lineno"> 397</span>  DCHECK(!request_dict_.empty());</div>
|
|
<div class="line"><a name="l00398"></a><span class="lineno"> 398</span> </div>
|
|
<div class="line"><a name="l00399"></a><span class="lineno"> 399</span>  <span class="comment">// Build tracks.</span></div>
|
|
<div class="line"><a name="l00400"></a><span class="lineno"> 400</span>  base::ListValue* tracks = <span class="keyword">new</span> base::ListValue();</div>
|
|
<div class="line"><a name="l00401"></a><span class="lineno"> 401</span> </div>
|
|
<div class="line"><a name="l00402"></a><span class="lineno"> 402</span>  base::DictionaryValue* track_sd = <span class="keyword">new</span> base::DictionaryValue();</div>
|
|
<div class="line"><a name="l00403"></a><span class="lineno"> 403</span>  track_sd->SetString(<span class="stringliteral">"type"</span>, <span class="stringliteral">"SD"</span>);</div>
|
|
<div class="line"><a name="l00404"></a><span class="lineno"> 404</span>  tracks->Append(track_sd);</div>
|
|
<div class="line"><a name="l00405"></a><span class="lineno"> 405</span>  base::DictionaryValue* track_hd = <span class="keyword">new</span> base::DictionaryValue();</div>
|
|
<div class="line"><a name="l00406"></a><span class="lineno"> 406</span>  track_hd->SetString(<span class="stringliteral">"type"</span>, <span class="stringliteral">"HD"</span>);</div>
|
|
<div class="line"><a name="l00407"></a><span class="lineno"> 407</span>  tracks->Append(track_hd);</div>
|
|
<div class="line"><a name="l00408"></a><span class="lineno"> 408</span>  base::DictionaryValue* track_audio = <span class="keyword">new</span> base::DictionaryValue();</div>
|
|
<div class="line"><a name="l00409"></a><span class="lineno"> 409</span>  track_audio->SetString(<span class="stringliteral">"type"</span>, <span class="stringliteral">"AUDIO"</span>);</div>
|
|
<div class="line"><a name="l00410"></a><span class="lineno"> 410</span>  tracks->Append(track_audio);</div>
|
|
<div class="line"><a name="l00411"></a><span class="lineno"> 411</span> </div>
|
|
<div class="line"><a name="l00412"></a><span class="lineno"> 412</span>  request_dict_.Set(<span class="stringliteral">"tracks"</span>, tracks);</div>
|
|
<div class="line"><a name="l00413"></a><span class="lineno"> 413</span> </div>
|
|
<div class="line"><a name="l00414"></a><span class="lineno"> 414</span>  <span class="comment">// Build DRM types.</span></div>
|
|
<div class="line"><a name="l00415"></a><span class="lineno"> 415</span>  base::ListValue* drm_types = <span class="keyword">new</span> base::ListValue();</div>
|
|
<div class="line"><a name="l00416"></a><span class="lineno"> 416</span>  drm_types->AppendString(<span class="stringliteral">"WIDEVINE"</span>);</div>
|
|
<div class="line"><a name="l00417"></a><span class="lineno"> 417</span>  request_dict_.Set(<span class="stringliteral">"drm_types"</span>, drm_types);</div>
|
|
<div class="line"><a name="l00418"></a><span class="lineno"> 418</span> </div>
|
|
<div class="line"><a name="l00419"></a><span class="lineno"> 419</span>  <span class="comment">// Build key rotation fields.</span></div>
|
|
<div class="line"><a name="l00420"></a><span class="lineno"> 420</span>  <span class="keywordflow">if</span> (enable_key_rotation) {</div>
|
|
<div class="line"><a name="l00421"></a><span class="lineno"> 421</span>  <span class="comment">// Javascript/JSON does not support int64_t or unsigned numbers. Use double</span></div>
|
|
<div class="line"><a name="l00422"></a><span class="lineno"> 422</span>  <span class="comment">// instead as 32-bit integer can be lossless represented using double.</span></div>
|
|
<div class="line"><a name="l00423"></a><span class="lineno"> 423</span>  request_dict_.SetDouble(<span class="stringliteral">"first_crypto_period_index"</span>,</div>
|
|
<div class="line"><a name="l00424"></a><span class="lineno"> 424</span>  first_crypto_period_index);</div>
|
|
<div class="line"><a name="l00425"></a><span class="lineno"> 425</span>  request_dict_.SetInteger(<span class="stringliteral">"crypto_period_count"</span>, crypto_period_count_);</div>
|
|
<div class="line"><a name="l00426"></a><span class="lineno"> 426</span>  }</div>
|
|
<div class="line"><a name="l00427"></a><span class="lineno"> 427</span> </div>
|
|
<div class="line"><a name="l00428"></a><span class="lineno"> 428</span>  base::JSONWriter::WriteWithOptions(</div>
|
|
<div class="line"><a name="l00429"></a><span class="lineno"> 429</span>  request_dict_,</div>
|
|
<div class="line"><a name="l00430"></a><span class="lineno"> 430</span>  <span class="comment">// Write doubles that have no fractional part as a normal integer, i.e.</span></div>
|
|
<div class="line"><a name="l00431"></a><span class="lineno"> 431</span>  <span class="comment">// without using exponential notation or appending a '.0'.</span></div>
|
|
<div class="line"><a name="l00432"></a><span class="lineno"> 432</span>  base::JSONWriter::OPTIONS_OMIT_DOUBLE_TYPE_PRESERVATION, request);</div>
|
|
<div class="line"><a name="l00433"></a><span class="lineno"> 433</span> }</div>
|
|
<div class="line"><a name="l00434"></a><span class="lineno"> 434</span> </div>
|
|
<div class="line"><a name="l00435"></a><span class="lineno"> 435</span> Status WidevineKeySource::GenerateKeyMessage(<span class="keyword">const</span> std::string& request,</div>
|
|
<div class="line"><a name="l00436"></a><span class="lineno"> 436</span>  std::string* message) {</div>
|
|
<div class="line"><a name="l00437"></a><span class="lineno"> 437</span>  DCHECK(message);</div>
|
|
<div class="line"><a name="l00438"></a><span class="lineno"> 438</span> </div>
|
|
<div class="line"><a name="l00439"></a><span class="lineno"> 439</span>  std::string request_base64_string;</div>
|
|
<div class="line"><a name="l00440"></a><span class="lineno"> 440</span>  base::Base64Encode(request, &request_base64_string);</div>
|
|
<div class="line"><a name="l00441"></a><span class="lineno"> 441</span> </div>
|
|
<div class="line"><a name="l00442"></a><span class="lineno"> 442</span>  base::DictionaryValue request_dict;</div>
|
|
<div class="line"><a name="l00443"></a><span class="lineno"> 443</span>  request_dict.SetString(<span class="stringliteral">"request"</span>, request_base64_string);</div>
|
|
<div class="line"><a name="l00444"></a><span class="lineno"> 444</span> </div>
|
|
<div class="line"><a name="l00445"></a><span class="lineno"> 445</span>  <span class="comment">// Sign the request.</span></div>
|
|
<div class="line"><a name="l00446"></a><span class="lineno"> 446</span>  <span class="keywordflow">if</span> (signer_) {</div>
|
|
<div class="line"><a name="l00447"></a><span class="lineno"> 447</span>  std::string signature;</div>
|
|
<div class="line"><a name="l00448"></a><span class="lineno"> 448</span>  <span class="keywordflow">if</span> (!signer_->GenerateSignature(request, &signature))</div>
|
|
<div class="line"><a name="l00449"></a><span class="lineno"> 449</span>  <span class="keywordflow">return</span> Status(error::INTERNAL_ERROR, <span class="stringliteral">"Signature generation failed."</span>);</div>
|
|
<div class="line"><a name="l00450"></a><span class="lineno"> 450</span> </div>
|
|
<div class="line"><a name="l00451"></a><span class="lineno"> 451</span>  std::string signature_base64_string;</div>
|
|
<div class="line"><a name="l00452"></a><span class="lineno"> 452</span>  base::Base64Encode(signature, &signature_base64_string);</div>
|
|
<div class="line"><a name="l00453"></a><span class="lineno"> 453</span> </div>
|
|
<div class="line"><a name="l00454"></a><span class="lineno"> 454</span>  request_dict.SetString(<span class="stringliteral">"signature"</span>, signature_base64_string);</div>
|
|
<div class="line"><a name="l00455"></a><span class="lineno"> 455</span>  request_dict.SetString(<span class="stringliteral">"signer"</span>, signer_->signer_name());</div>
|
|
<div class="line"><a name="l00456"></a><span class="lineno"> 456</span>  }</div>
|
|
<div class="line"><a name="l00457"></a><span class="lineno"> 457</span> </div>
|
|
<div class="line"><a name="l00458"></a><span class="lineno"> 458</span>  base::JSONWriter::Write(request_dict, message);</div>
|
|
<div class="line"><a name="l00459"></a><span class="lineno"> 459</span>  <span class="keywordflow">return</span> Status::OK;</div>
|
|
<div class="line"><a name="l00460"></a><span class="lineno"> 460</span> }</div>
|
|
<div class="line"><a name="l00461"></a><span class="lineno"> 461</span> </div>
|
|
<div class="line"><a name="l00462"></a><span class="lineno"> 462</span> <span class="keywordtype">bool</span> WidevineKeySource::DecodeResponse(</div>
|
|
<div class="line"><a name="l00463"></a><span class="lineno"> 463</span>  <span class="keyword">const</span> std::string& raw_response,</div>
|
|
<div class="line"><a name="l00464"></a><span class="lineno"> 464</span>  std::string* response) {</div>
|
|
<div class="line"><a name="l00465"></a><span class="lineno"> 465</span>  DCHECK(response);</div>
|
|
<div class="line"><a name="l00466"></a><span class="lineno"> 466</span> </div>
|
|
<div class="line"><a name="l00467"></a><span class="lineno"> 467</span>  <span class="comment">// Extract base64 formatted response from JSON formatted raw response.</span></div>
|
|
<div class="line"><a name="l00468"></a><span class="lineno"> 468</span>  scoped_ptr<base::Value> root(base::JSONReader::Read(raw_response));</div>
|
|
<div class="line"><a name="l00469"></a><span class="lineno"> 469</span>  <span class="keywordflow">if</span> (!root) {</div>
|
|
<div class="line"><a name="l00470"></a><span class="lineno"> 470</span>  LOG(ERROR) << <span class="stringliteral">"'"</span> << raw_response << <span class="stringliteral">"' is not in JSON format."</span>;</div>
|
|
<div class="line"><a name="l00471"></a><span class="lineno"> 471</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00472"></a><span class="lineno"> 472</span>  }</div>
|
|
<div class="line"><a name="l00473"></a><span class="lineno"> 473</span>  <span class="keyword">const</span> base::DictionaryValue* response_dict = NULL;</div>
|
|
<div class="line"><a name="l00474"></a><span class="lineno"> 474</span>  RCHECK(root->GetAsDictionary(&response_dict));</div>
|
|
<div class="line"><a name="l00475"></a><span class="lineno"> 475</span> </div>
|
|
<div class="line"><a name="l00476"></a><span class="lineno"> 476</span>  std::string response_base64_string;</div>
|
|
<div class="line"><a name="l00477"></a><span class="lineno"> 477</span>  RCHECK(response_dict->GetString(<span class="stringliteral">"response"</span>, &response_base64_string));</div>
|
|
<div class="line"><a name="l00478"></a><span class="lineno"> 478</span>  RCHECK(base::Base64Decode(response_base64_string, response));</div>
|
|
<div class="line"><a name="l00479"></a><span class="lineno"> 479</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00480"></a><span class="lineno"> 480</span> }</div>
|
|
<div class="line"><a name="l00481"></a><span class="lineno"> 481</span> </div>
|
|
<div class="line"><a name="l00482"></a><span class="lineno"> 482</span> <span class="keywordtype">bool</span> WidevineKeySource::ExtractEncryptionKey(</div>
|
|
<div class="line"><a name="l00483"></a><span class="lineno"> 483</span>  <span class="keywordtype">bool</span> enable_key_rotation,</div>
|
|
<div class="line"><a name="l00484"></a><span class="lineno"> 484</span>  <span class="keywordtype">bool</span> widevine_classic,</div>
|
|
<div class="line"><a name="l00485"></a><span class="lineno"> 485</span>  <span class="keyword">const</span> std::string& response,</div>
|
|
<div class="line"><a name="l00486"></a><span class="lineno"> 486</span>  <span class="keywordtype">bool</span>* transient_error) {</div>
|
|
<div class="line"><a name="l00487"></a><span class="lineno"> 487</span>  DCHECK(transient_error);</div>
|
|
<div class="line"><a name="l00488"></a><span class="lineno"> 488</span>  *transient_error = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00489"></a><span class="lineno"> 489</span> </div>
|
|
<div class="line"><a name="l00490"></a><span class="lineno"> 490</span>  scoped_ptr<base::Value> root(base::JSONReader::Read(response));</div>
|
|
<div class="line"><a name="l00491"></a><span class="lineno"> 491</span>  <span class="keywordflow">if</span> (!root) {</div>
|
|
<div class="line"><a name="l00492"></a><span class="lineno"> 492</span>  LOG(ERROR) << <span class="stringliteral">"'"</span> << response << <span class="stringliteral">"' is not in JSON format."</span>;</div>
|
|
<div class="line"><a name="l00493"></a><span class="lineno"> 493</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00494"></a><span class="lineno"> 494</span>  }</div>
|
|
<div class="line"><a name="l00495"></a><span class="lineno"> 495</span> </div>
|
|
<div class="line"><a name="l00496"></a><span class="lineno"> 496</span>  <span class="keyword">const</span> base::DictionaryValue* license_dict = NULL;</div>
|
|
<div class="line"><a name="l00497"></a><span class="lineno"> 497</span>  RCHECK(root->GetAsDictionary(&license_dict));</div>
|
|
<div class="line"><a name="l00498"></a><span class="lineno"> 498</span> </div>
|
|
<div class="line"><a name="l00499"></a><span class="lineno"> 499</span>  std::string license_status;</div>
|
|
<div class="line"><a name="l00500"></a><span class="lineno"> 500</span>  RCHECK(license_dict->GetString(<span class="stringliteral">"status"</span>, &license_status));</div>
|
|
<div class="line"><a name="l00501"></a><span class="lineno"> 501</span>  <span class="keywordflow">if</span> (license_status != kLicenseStatusOK) {</div>
|
|
<div class="line"><a name="l00502"></a><span class="lineno"> 502</span>  LOG(ERROR) << <span class="stringliteral">"Received non-OK license response: "</span> << response;</div>
|
|
<div class="line"><a name="l00503"></a><span class="lineno"> 503</span>  *transient_error = (license_status == kLicenseStatusTransientError);</div>
|
|
<div class="line"><a name="l00504"></a><span class="lineno"> 504</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00505"></a><span class="lineno"> 505</span>  }</div>
|
|
<div class="line"><a name="l00506"></a><span class="lineno"> 506</span> </div>
|
|
<div class="line"><a name="l00507"></a><span class="lineno"> 507</span>  <span class="keyword">const</span> base::ListValue* tracks;</div>
|
|
<div class="line"><a name="l00508"></a><span class="lineno"> 508</span>  RCHECK(license_dict->GetList(<span class="stringliteral">"tracks"</span>, &tracks));</div>
|
|
<div class="line"><a name="l00509"></a><span class="lineno"> 509</span>  <span class="comment">// Should have at least one track per crypto_period.</span></div>
|
|
<div class="line"><a name="l00510"></a><span class="lineno"> 510</span>  RCHECK(enable_key_rotation ? tracks->GetSize() >= 1 * crypto_period_count_</div>
|
|
<div class="line"><a name="l00511"></a><span class="lineno"> 511</span>  : tracks->GetSize() >= 1);</div>
|
|
<div class="line"><a name="l00512"></a><span class="lineno"> 512</span> </div>
|
|
<div class="line"><a name="l00513"></a><span class="lineno"> 513</span>  <span class="keywordtype">int</span> current_crypto_period_index = first_crypto_period_index_;</div>
|
|
<div class="line"><a name="l00514"></a><span class="lineno"> 514</span> </div>
|
|
<div class="line"><a name="l00515"></a><span class="lineno"> 515</span>  EncryptionKeyMap encryption_key_map;</div>
|
|
<div class="line"><a name="l00516"></a><span class="lineno"> 516</span>  <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = 0; i < tracks->GetSize(); ++i) {</div>
|
|
<div class="line"><a name="l00517"></a><span class="lineno"> 517</span>  <span class="keyword">const</span> base::DictionaryValue* track_dict;</div>
|
|
<div class="line"><a name="l00518"></a><span class="lineno"> 518</span>  RCHECK(tracks->GetDictionary(i, &track_dict));</div>
|
|
<div class="line"><a name="l00519"></a><span class="lineno"> 519</span> </div>
|
|
<div class="line"><a name="l00520"></a><span class="lineno"> 520</span>  <span class="keywordflow">if</span> (enable_key_rotation) {</div>
|
|
<div class="line"><a name="l00521"></a><span class="lineno"> 521</span>  <span class="keywordtype">int</span> crypto_period_index;</div>
|
|
<div class="line"><a name="l00522"></a><span class="lineno"> 522</span>  RCHECK(</div>
|
|
<div class="line"><a name="l00523"></a><span class="lineno"> 523</span>  track_dict->GetInteger(<span class="stringliteral">"crypto_period_index"</span>, &crypto_period_index));</div>
|
|
<div class="line"><a name="l00524"></a><span class="lineno"> 524</span>  <span class="keywordflow">if</span> (crypto_period_index != current_crypto_period_index) {</div>
|
|
<div class="line"><a name="l00525"></a><span class="lineno"> 525</span>  <span class="keywordflow">if</span> (crypto_period_index != current_crypto_period_index + 1) {</div>
|
|
<div class="line"><a name="l00526"></a><span class="lineno"> 526</span>  LOG(ERROR) << <span class="stringliteral">"Expecting crypto period index "</span></div>
|
|
<div class="line"><a name="l00527"></a><span class="lineno"> 527</span>  << current_crypto_period_index << <span class="stringliteral">" or "</span></div>
|
|
<div class="line"><a name="l00528"></a><span class="lineno"> 528</span>  << current_crypto_period_index + 1 << <span class="stringliteral">"; Seen "</span></div>
|
|
<div class="line"><a name="l00529"></a><span class="lineno"> 529</span>  << crypto_period_index << <span class="stringliteral">" at track "</span> << i;</div>
|
|
<div class="line"><a name="l00530"></a><span class="lineno"> 530</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00531"></a><span class="lineno"> 531</span>  }</div>
|
|
<div class="line"><a name="l00532"></a><span class="lineno"> 532</span>  <span class="keywordflow">if</span> (!PushToKeyPool(&encryption_key_map))</div>
|
|
<div class="line"><a name="l00533"></a><span class="lineno"> 533</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00534"></a><span class="lineno"> 534</span>  ++current_crypto_period_index;</div>
|
|
<div class="line"><a name="l00535"></a><span class="lineno"> 535</span>  }</div>
|
|
<div class="line"><a name="l00536"></a><span class="lineno"> 536</span>  }</div>
|
|
<div class="line"><a name="l00537"></a><span class="lineno"> 537</span> </div>
|
|
<div class="line"><a name="l00538"></a><span class="lineno"> 538</span>  std::string track_type_str;</div>
|
|
<div class="line"><a name="l00539"></a><span class="lineno"> 539</span>  RCHECK(track_dict->GetString(<span class="stringliteral">"type"</span>, &track_type_str));</div>
|
|
<div class="line"><a name="l00540"></a><span class="lineno"> 540</span>  TrackType track_type = <a class="code" href="../../d1/d1f/classshaka_1_1media_1_1KeySource.html#a0963412e7ee33d0e34893ebdf38d96c1">GetTrackTypeFromString</a>(track_type_str);</div>
|
|
<div class="line"><a name="l00541"></a><span class="lineno"> 541</span>  DCHECK_NE(TRACK_TYPE_UNKNOWN, track_type);</div>
|
|
<div class="line"><a name="l00542"></a><span class="lineno"> 542</span>  RCHECK(encryption_key_map.find(track_type) == encryption_key_map.end());</div>
|
|
<div class="line"><a name="l00543"></a><span class="lineno"> 543</span> </div>
|
|
<div class="line"><a name="l00544"></a><span class="lineno"> 544</span>  scoped_ptr<EncryptionKey> encryption_key(<span class="keyword">new</span> EncryptionKey());</div>
|
|
<div class="line"><a name="l00545"></a><span class="lineno"> 545</span> </div>
|
|
<div class="line"><a name="l00546"></a><span class="lineno"> 546</span>  <span class="keywordflow">if</span> (!GetKeyFromTrack(*track_dict, &encryption_key->key))</div>
|
|
<div class="line"><a name="l00547"></a><span class="lineno"> 547</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00548"></a><span class="lineno"> 548</span> </div>
|
|
<div class="line"><a name="l00549"></a><span class="lineno"> 549</span>  <span class="comment">// Get key ID and PSSH data for CENC content only.</span></div>
|
|
<div class="line"><a name="l00550"></a><span class="lineno"> 550</span>  <span class="keywordflow">if</span> (!widevine_classic) {</div>
|
|
<div class="line"><a name="l00551"></a><span class="lineno"> 551</span>  <span class="keywordflow">if</span> (!GetKeyIdFromTrack(*track_dict, &encryption_key->key_id))</div>
|
|
<div class="line"><a name="l00552"></a><span class="lineno"> 552</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00553"></a><span class="lineno"> 553</span> </div>
|
|
<div class="line"><a name="l00554"></a><span class="lineno"> 554</span>  ProtectionSystemSpecificInfo info;</div>
|
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<div class="line"><a name="l00555"></a><span class="lineno"> 555</span>  info.add_key_id(encryption_key->key_id);</div>
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<div class="line"><a name="l00556"></a><span class="lineno"> 556</span>  info.set_system_id(kWidevineSystemId, arraysize(kWidevineSystemId));</div>
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<div class="line"><a name="l00557"></a><span class="lineno"> 557</span>  info.set_pssh_box_version(0);</div>
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<div class="line"><a name="l00558"></a><span class="lineno"> 558</span> </div>
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<div class="line"><a name="l00559"></a><span class="lineno"> 559</span>  std::vector<uint8_t> pssh_data;</div>
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<div class="line"><a name="l00560"></a><span class="lineno"> 560</span>  <span class="keywordflow">if</span> (!GetPsshDataFromTrack(*track_dict, &pssh_data))</div>
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<div class="line"><a name="l00561"></a><span class="lineno"> 561</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00562"></a><span class="lineno"> 562</span>  info.set_pssh_data(pssh_data);</div>
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<div class="line"><a name="l00563"></a><span class="lineno"> 563</span> </div>
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<div class="line"><a name="l00564"></a><span class="lineno"> 564</span>  encryption_key->key_system_info.push_back(info);</div>
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<div class="line"><a name="l00565"></a><span class="lineno"> 565</span>  }</div>
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<div class="line"><a name="l00566"></a><span class="lineno"> 566</span>  encryption_key_map[track_type] = encryption_key.release();</div>
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<div class="line"><a name="l00567"></a><span class="lineno"> 567</span>  }</div>
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<div class="line"><a name="l00568"></a><span class="lineno"> 568</span> </div>
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<div class="line"><a name="l00569"></a><span class="lineno"> 569</span>  <span class="comment">// If the flag exists, create a common system ID PSSH box that contains the</span></div>
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<div class="line"><a name="l00570"></a><span class="lineno"> 570</span>  <span class="comment">// key IDs of all the keys.</span></div>
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<div class="line"><a name="l00571"></a><span class="lineno"> 571</span>  <span class="keywordflow">if</span> (add_common_pssh_ && !widevine_classic) {</div>
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<div class="line"><a name="l00572"></a><span class="lineno"> 572</span>  std::set<std::vector<uint8_t>> key_ids;</div>
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<div class="line"><a name="l00573"></a><span class="lineno"> 573</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> EncryptionKeyMap::value_type& pair : encryption_key_map) {</div>
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<div class="line"><a name="l00574"></a><span class="lineno"> 574</span>  key_ids.insert(pair.second->key_id);</div>
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<div class="line"><a name="l00575"></a><span class="lineno"> 575</span>  }</div>
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<div class="line"><a name="l00576"></a><span class="lineno"> 576</span> </div>
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<div class="line"><a name="l00577"></a><span class="lineno"> 577</span>  <span class="comment">// Create a common system PSSH box.</span></div>
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<div class="line"><a name="l00578"></a><span class="lineno"> 578</span>  ProtectionSystemSpecificInfo info;</div>
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<div class="line"><a name="l00579"></a><span class="lineno"> 579</span>  info.set_system_id(kCommonSystemId, arraysize(kCommonSystemId));</div>
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<div class="line"><a name="l00580"></a><span class="lineno"> 580</span>  info.set_pssh_box_version(1);</div>
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<div class="line"><a name="l00581"></a><span class="lineno"> 581</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> std::vector<uint8_t>& key_id : key_ids) {</div>
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<div class="line"><a name="l00582"></a><span class="lineno"> 582</span>  info.add_key_id(key_id);</div>
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<div class="line"><a name="l00583"></a><span class="lineno"> 583</span>  }</div>
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<div class="line"><a name="l00584"></a><span class="lineno"> 584</span> </div>
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<div class="line"><a name="l00585"></a><span class="lineno"> 585</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> EncryptionKeyMap::value_type& pair : encryption_key_map) {</div>
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<div class="line"><a name="l00586"></a><span class="lineno"> 586</span>  pair.second->key_system_info.push_back(info);</div>
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<div class="line"><a name="l00587"></a><span class="lineno"> 587</span>  }</div>
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<div class="line"><a name="l00588"></a><span class="lineno"> 588</span>  }</div>
|
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<div class="line"><a name="l00589"></a><span class="lineno"> 589</span> </div>
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<div class="line"><a name="l00590"></a><span class="lineno"> 590</span>  DCHECK(!encryption_key_map.empty());</div>
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<div class="line"><a name="l00591"></a><span class="lineno"> 591</span>  <span class="keywordflow">if</span> (!enable_key_rotation) {</div>
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<div class="line"><a name="l00592"></a><span class="lineno"> 592</span>  encryption_key_map_ = encryption_key_map;</div>
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<div class="line"><a name="l00593"></a><span class="lineno"> 593</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00594"></a><span class="lineno"> 594</span>  }</div>
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<div class="line"><a name="l00595"></a><span class="lineno"> 595</span>  <span class="keywordflow">return</span> PushToKeyPool(&encryption_key_map);</div>
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<div class="line"><a name="l00596"></a><span class="lineno"> 596</span> }</div>
|
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<div class="line"><a name="l00597"></a><span class="lineno"> 597</span> </div>
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<div class="line"><a name="l00598"></a><span class="lineno"> 598</span> <span class="keywordtype">bool</span> WidevineKeySource::PushToKeyPool(</div>
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<div class="line"><a name="l00599"></a><span class="lineno"> 599</span>  EncryptionKeyMap* encryption_key_map) {</div>
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<div class="line"><a name="l00600"></a><span class="lineno"> 600</span>  DCHECK(key_pool_);</div>
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<div class="line"><a name="l00601"></a><span class="lineno"> 601</span>  DCHECK(encryption_key_map);</div>
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<div class="line"><a name="l00602"></a><span class="lineno"> 602</span>  Status status =</div>
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<div class="line"><a name="l00603"></a><span class="lineno"> 603</span>  key_pool_->Push(scoped_refptr<RefCountedEncryptionKeyMap>(</div>
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<div class="line"><a name="l00604"></a><span class="lineno"> 604</span>  <span class="keyword">new</span> RefCountedEncryptionKeyMap(encryption_key_map)),</div>
|
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<div class="line"><a name="l00605"></a><span class="lineno"> 605</span>  kInfiniteTimeout);</div>
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<div class="line"><a name="l00606"></a><span class="lineno"> 606</span>  encryption_key_map->clear();</div>
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<div class="line"><a name="l00607"></a><span class="lineno"> 607</span>  <span class="keywordflow">if</span> (!status.ok()) {</div>
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<div class="line"><a name="l00608"></a><span class="lineno"> 608</span>  DCHECK_EQ(error::STOPPED, status.error_code());</div>
|
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<div class="line"><a name="l00609"></a><span class="lineno"> 609</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00610"></a><span class="lineno"> 610</span>  }</div>
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<div class="line"><a name="l00611"></a><span class="lineno"> 611</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00612"></a><span class="lineno"> 612</span> }</div>
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<div class="line"><a name="l00613"></a><span class="lineno"> 613</span> </div>
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<div class="line"><a name="l00614"></a><span class="lineno"> 614</span> } <span class="comment">// namespace media</span></div>
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<div class="line"><a name="l00615"></a><span class="lineno"> 615</span> } <span class="comment">// namespace shaka</span></div>
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<div class="ttc" id="classshaka_1_1media_1_1HttpKeyFetcher_html"><div class="ttname"><a href="../../d7/de0/classshaka_1_1media_1_1HttpKeyFetcher.html">shaka::media::HttpKeyFetcher</a></div><div class="ttdef"><b>Definition:</b> <a href="../../db/d71/http__key__fetcher_8h_source.html#l00026">http_key_fetcher.h:26</a></div></div>
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<div class="ttc" id="classshaka_1_1media_1_1WidevineKeySource_html_abdff0d3cc5f59b744c68b11b0c1f6272"><div class="ttname"><a href="../../da/ddd/classshaka_1_1media_1_1WidevineKeySource.html#abdff0d3cc5f59b744c68b11b0c1f6272">shaka::media::WidevineKeySource::set_signer</a></div><div class="ttdeci">void set_signer(scoped_ptr< RequestSigner > signer)</div><div class="ttdef"><b>Definition:</b> <a href="../../d5/d89/widevine__key__source_8cc_source.html#l00280">widevine_key_source.cc:280</a></div></div>
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<div class="ttc" id="classshaka_1_1media_1_1WidevineKeySource_html_ae6490d21a6538b9c909fdf996398e576"><div class="ttname"><a href="../../da/ddd/classshaka_1_1media_1_1WidevineKeySource.html#ae6490d21a6538b9c909fdf996398e576">shaka::media::WidevineKeySource::FetchKeys</a></div><div class="ttdeci">Status FetchKeys(const std::vector< uint8_t > &pssh_box) override</div><div class="ttdef"><b>Definition:</b> <a href="../../d5/d89/widevine__key__source_8cc_source.html#l00175">widevine_key_source.cc:175</a></div></div>
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<div class="ttc" id="classshaka_1_1media_1_1WidevineKeySource_html_ab56a71e9f9f9e545f96e667279c05bb1"><div class="ttname"><a href="../../da/ddd/classshaka_1_1media_1_1WidevineKeySource.html#ab56a71e9f9f9e545f96e667279c05bb1">shaka::media::WidevineKeySource::GetCryptoPeriodKey</a></div><div class="ttdeci">Status GetCryptoPeriodKey(uint32_t crypto_period_index, TrackType track_type, EncryptionKey *key) override</div><div class="ttdef"><b>Definition:</b> <a href="../../d5/d89/widevine__key__source_8cc_source.html#l00258">widevine_key_source.cc:258</a></div></div>
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<div class="ttc" id="classshaka_1_1media_1_1WidevineKeySource_html_a59a16d61c6a6d05745e8b49fd3618deb"><div class="ttname"><a href="../../da/ddd/classshaka_1_1media_1_1WidevineKeySource.html#a59a16d61c6a6d05745e8b49fd3618deb">shaka::media::WidevineKeySource::GetKey</a></div><div class="ttdeci">Status GetKey(TrackType track_type, EncryptionKey *key) override</div><div class="ttdef"><b>Definition:</b> <a href="../../d5/d89/widevine__key__source_8cc_source.html#l00232">widevine_key_source.cc:232</a></div></div>
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<div class="ttc" id="classshaka_1_1media_1_1KeySource_html_a4f9cede7a8c1678e1fac93c8fe12aa75"><div class="ttname"><a href="../../d1/d1f/classshaka_1_1media_1_1KeySource.html#a4f9cede7a8c1678e1fac93c8fe12aa75">shaka::media::KeySource::TrackTypeToString</a></div><div class="ttdeci">static std::string TrackTypeToString(TrackType track_type)</div><div class="ttdoc">Convert TrackType to string. </div><div class="ttdef"><b>Definition:</b> <a href="../../d7/dd6/key__source_8cc_source.html#l00033">key_source.cc:33</a></div></div>
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<div class="ttc" id="classshaka_1_1media_1_1ProducerConsumerQueue_html"><div class="ttname"><a href="../../d5/d33/classshaka_1_1media_1_1ProducerConsumerQueue.html">shaka::media::ProducerConsumerQueue</a></div><div class="ttdef"><b>Definition:</b> <a href="../../d5/d15/producer__consumer__queue_8h_source.html#l00028">producer_consumer_queue.h:28</a></div></div>
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<div class="ttc" id="classshaka_1_1media_1_1WidevineKeySource_html_afc5154b2994b5fe1f8f0c494bbd2bcdd"><div class="ttname"><a href="../../da/ddd/classshaka_1_1media_1_1WidevineKeySource.html#afc5154b2994b5fe1f8f0c494bbd2bcdd">shaka::media::WidevineKeySource::set_key_fetcher</a></div><div class="ttdeci">void set_key_fetcher(scoped_ptr< KeyFetcher > key_fetcher)</div><div class="ttdef"><b>Definition:</b> <a href="../../d5/d89/widevine__key__source_8cc_source.html#l00284">widevine_key_source.cc:284</a></div></div>
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<div class="ttc" id="classshaka_1_1media_1_1WidevineKeySource_html"><div class="ttname"><a href="../../da/ddd/classshaka_1_1media_1_1WidevineKeySource.html">shaka::media::WidevineKeySource</a></div><div class="ttdef"><b>Definition:</b> <a href="../../da/d5c/widevine__key__source_8h_source.html#l00031">widevine_key_source.h:31</a></div></div>
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<div class="ttc" id="classshaka_1_1media_1_1KeySource_html_a0963412e7ee33d0e34893ebdf38d96c1"><div class="ttname"><a href="../../d1/d1f/classshaka_1_1media_1_1KeySource.html#a0963412e7ee33d0e34893ebdf38d96c1">shaka::media::KeySource::GetTrackTypeFromString</a></div><div class="ttdeci">static TrackType GetTrackTypeFromString(const std::string &track_type_string)</div><div class="ttdoc">Convert string representation of track type to enum representation. </div><div class="ttdef"><b>Definition:</b> <a href="../../d7/dd6/key__source_8cc_source.html#l00019">key_source.cc:19</a></div></div>
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<div class="ttc" id="structshaka_1_1media_1_1EncryptionKey_html"><div class="ttname"><a href="../../dd/dbd/structshaka_1_1media_1_1EncryptionKey.html">shaka::media::EncryptionKey</a></div><div class="ttdef"><b>Definition:</b> <a href="../../dc/d3f/key__source_8h_source.html#l00020">key_source.h:20</a></div></div>
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<div class="ttc" id="classshaka_1_1media_1_1ProtectionSystemSpecificInfo_html"><div class="ttname"><a href="../../d0/dd4/classshaka_1_1media_1_1ProtectionSystemSpecificInfo.html">shaka::media::ProtectionSystemSpecificInfo</a></div><div class="ttdef"><b>Definition:</b> <a href="../../d6/d59/protection__system__specific__info_8h_source.html#l00019">protection_system_specific_info.h:19</a></div></div>
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<div class="ttc" id="classshaka_1_1media_1_1WidevineKeySource_html_a93480a98e423d0456482844ac629bd2e"><div class="ttname"><a href="../../da/ddd/classshaka_1_1media_1_1WidevineKeySource.html#a93480a98e423d0456482844ac629bd2e">shaka::media::WidevineKeySource::WidevineKeySource</a></div><div class="ttdeci">WidevineKeySource(const std::string &server_url, bool add_common_pssh)</div><div class="ttdef"><b>Definition:</b> <a href="../../d5/d89/widevine__key__source_8cc_source.html#l00137">widevine_key_source.cc:137</a></div></div>
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<div class="ttc" id="classshaka_1_1media_1_1Status_html"><div class="ttname"><a href="../../d0/d93/classshaka_1_1media_1_1Status.html">shaka::media::Status</a></div><div class="ttdef"><b>Definition:</b> <a href="../../d1/d13/status_8h_source.html#l00075">status.h:75</a></div></div>
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<div class="ttc" id="classshaka_1_1media_1_1ProtectionSystemSpecificInfo_html_a13b0f93b68efff614c5356df081f2560"><div class="ttname"><a href="../../d0/dd4/classshaka_1_1media_1_1ProtectionSystemSpecificInfo.html#a13b0f93b68efff614c5356df081f2560">shaka::media::ProtectionSystemSpecificInfo::Parse</a></div><div class="ttdeci">bool Parse(const uint8_t *data, size_t data_size)</div><div class="ttdef"><b>Definition:</b> <a href="../../d7/d42/protection__system__specific__info_8cc_source.html#l00044">protection_system_specific_info.cc:44</a></div></div>
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