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<div class="title">widevine_encryption_flags.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> <span class="comment">//</span></div>
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<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment">// Defines command line flags for widevine_encryption.</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 "packager/app/widevine_encryption_flags.h"</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/app/validate_flag.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/logging.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/strings/string_piece.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/strings/string_util.h"</span></div>
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<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> </div>
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<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> DEFINE_bool(enable_widevine_encryption,</div>
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<div class="line"><a name="l00017"></a><span class="lineno"> 17</span>  <span class="keyword">false</span>,</div>
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<div class="line"><a name="l00018"></a><span class="lineno"> 18</span>  <span class="stringliteral">"Enable encryption with Widevine license server/proxy. User should "</span></div>
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<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>  <span class="stringliteral">"provide either AES signing key (--aes_signing_key, "</span></div>
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<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>  <span class="stringliteral">"--aes_signing_iv) or RSA signing key (--rsa_signing_key_path)."</span>);</div>
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<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> DEFINE_bool(enable_widevine_decryption,</div>
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<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>  <span class="keyword">false</span>,</div>
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<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>  <span class="stringliteral">"Enable decryption with Widevine license server/proxy. User should "</span></div>
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<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>  <span class="stringliteral">"provide either AES signing key (--aes_signing_key, "</span></div>
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<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>  <span class="stringliteral">"--aes_signing_iv) or RSA signing key (--rsa_signing_key_path)."</span>);</div>
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<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> DEFINE_string(key_server_url, <span class="stringliteral">""</span>, <span class="stringliteral">"Key server url. Required for encryption and "</span></div>
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<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>  <span class="stringliteral">"decryption"</span>);</div>
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<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> DEFINE_string(content_id, <span class="stringliteral">""</span>, <span class="stringliteral">"Content Id (hex)."</span>);</div>
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<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> DEFINE_string(policy,</div>
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<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  <span class="stringliteral">""</span>,</div>
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<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  <span class="stringliteral">"The name of a stored policy, which specifies DRM content "</span></div>
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<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  <span class="stringliteral">"rights."</span>);</div>
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<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> DEFINE_int32(max_sd_pixels,</div>
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<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  768 * 576,</div>
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<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  <span class="stringliteral">"If the video track has more pixels per frame than max_sd_pixels, "</span></div>
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<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  <span class="stringliteral">"it is considered as HD, SD otherwise. Default: 768 * 576."</span>);</div>
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<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> DEFINE_string(signer, <span class="stringliteral">""</span>, <span class="stringliteral">"The name of the signer."</span>);</div>
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<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> DEFINE_string(aes_signing_key,</div>
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<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  <span class="stringliteral">""</span>,</div>
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<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  <span class="stringliteral">"AES signing key in hex string. --aes_signing_iv is required. "</span></div>
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<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  <span class="stringliteral">"Exclusive with --rsa_signing_key_path."</span>);</div>
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<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> DEFINE_string(aes_signing_iv,</div>
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<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  <span class="stringliteral">""</span>,</div>
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<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  <span class="stringliteral">"AES signing iv in hex string."</span>);</div>
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<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> DEFINE_string(rsa_signing_key_path,</div>
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<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <span class="stringliteral">""</span>,</div>
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<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  <span class="stringliteral">"Stores PKCS#1 RSA private key for request signing. Exclusive "</span></div>
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<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <span class="stringliteral">"with --aes_signing_key."</span>);</div>
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<div class="line"><a name="l00049"></a><span class="lineno"> 49</span> DEFINE_int32(crypto_period_duration,</div>
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<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  0,</div>
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<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <span class="stringliteral">"Crypto period duration in seconds. If it is non-zero, key "</span></div>
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<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <span class="stringliteral">"rotation is enabled."</span>);</div>
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<div class="line"><a name="l00053"></a><span class="lineno"> 53</span> </div>
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<div class="line"><a name="l00054"></a><span class="lineno"> 54</span> <span class="keyword">namespace </span>edash_packager {</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"><a class="line" href="../../db/d09/namespaceedash__packager.html#a95bb52262b99e97fd7f8f9f0075fe1e6"> 56</a></span> <span class="keywordtype">bool</span> <a class="code" href="../../db/d09/namespaceedash__packager.html#a95bb52262b99e97fd7f8f9f0075fe1e6">ValidateWidevineCryptoFlags</a>() {</div>
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<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  <span class="keywordtype">bool</span> success = <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00058"></a><span class="lineno"> 58</span> </div>
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<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <span class="keyword">const</span> <span class="keywordtype">bool</span> widevine_crypto =</div>
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<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  FLAGS_enable_widevine_encryption || FLAGS_enable_widevine_decryption;</div>
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<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  <span class="keyword">const</span> <span class="keywordtype">char</span> widevine_crypto_label[] =</div>
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<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  <span class="stringliteral">"--enable_widevine_encryption/decryption"</span>;</div>
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<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <span class="comment">// key_server_url and signer (optional) are associated with</span></div>
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<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <span class="comment">// enable_widevine_encryption and enable_widevine_descryption.</span></div>
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<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <span class="keywordflow">if</span> (!<a class="code" href="../../db/d09/namespaceedash__packager.html#a5836ddf029d56f4a8dd43a7b4d8dbaff">ValidateFlag</a>(<span class="stringliteral">"key_server_url"</span>,</div>
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<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  FLAGS_key_server_url,</div>
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<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  widevine_crypto,</div>
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<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <span class="keyword">false</span>,</div>
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<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  widevine_crypto_label)) {</div>
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<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  success = <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  }</div>
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<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <span class="keywordflow">if</span> (!<a class="code" href="../../db/d09/namespaceedash__packager.html#a5836ddf029d56f4a8dd43a7b4d8dbaff">ValidateFlag</a>(<span class="stringliteral">"signer"</span>,</div>
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<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  FLAGS_signer,</div>
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<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  widevine_crypto,</div>
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<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="keyword">true</span>,</div>
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<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  widevine_crypto_label)) {</div>
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<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  success = <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  }</div>
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<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  <span class="keywordflow">if</span> (widevine_crypto && FLAGS_signer.empty() &&</div>
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<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  base::StartsWith(base::StringPiece(FLAGS_key_server_url), <span class="stringliteral">"http"</span>,</div>
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<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  base::CompareCase::INSENSITIVE_ASCII)) {</div>
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<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  LOG(WARNING) << <span class="stringliteral">"--signer is likely required with "</span></div>
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<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <span class="stringliteral">"--enable_widevine_encryption/decryption."</span>;</div>
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<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  }</div>
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<div class="line"><a name="l00085"></a><span class="lineno"> 85</span> </div>
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<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <span class="keyword">const</span> <span class="keywordtype">char</span> widevine_encryption_label[] = <span class="stringliteral">"--enable_widevine_encryption"</span>;</div>
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<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  <span class="comment">// content_id and policy (optional) are associated with</span></div>
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<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  <span class="comment">// enable_widevine_encryption.</span></div>
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<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="keywordflow">if</span> (!<a class="code" href="../../db/d09/namespaceedash__packager.html#a5836ddf029d56f4a8dd43a7b4d8dbaff">ValidateFlag</a>(<span class="stringliteral">"content_id"</span>,</div>
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<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  FLAGS_content_id,</div>
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<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  FLAGS_enable_widevine_encryption,</div>
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<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  <span class="keyword">false</span>,</div>
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<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  widevine_encryption_label)) {</div>
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<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  success = <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  }</div>
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<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  <span class="keywordflow">if</span> (!<a class="code" href="../../db/d09/namespaceedash__packager.html#a5836ddf029d56f4a8dd43a7b4d8dbaff">ValidateFlag</a>(<span class="stringliteral">"policy"</span>,</div>
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<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  FLAGS_policy,</div>
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<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  FLAGS_enable_widevine_encryption,</div>
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<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <span class="keyword">true</span>,</div>
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<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  widevine_encryption_label)) {</div>
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<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  success = <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  }</div>
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<div class="line"><a name="l00103"></a><span class="lineno"> 103</span> </div>
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<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <span class="keywordflow">if</span> (FLAGS_max_sd_pixels <= 0) {</div>
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<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  <a class="code" href="../../db/d09/namespaceedash__packager.html#a64d35a221086349dfbd1acefee2aaef1">PrintError</a>(<span class="stringliteral">"--max_sd_pixels must be positive."</span>);</div>
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<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  success = <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00107"></a><span class="lineno"> 107</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>  <span class="keyword">const</span> <span class="keywordtype">bool</span> aes = !FLAGS_signer.empty() && FLAGS_rsa_signing_key_path.empty();</div>
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<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  <span class="keyword">const</span> <span class="keywordtype">char</span> aes_label[] =</div>
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<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  <span class="stringliteral">"--signer is specified and exclusive with --rsa_signing_key_path"</span>;</div>
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<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  <span class="comment">// aes_signer_key and aes_signing_iv are associated with aes signing.</span></div>
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<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  <span class="keywordflow">if</span> (!<a class="code" href="../../db/d09/namespaceedash__packager.html#a5836ddf029d56f4a8dd43a7b4d8dbaff">ValidateFlag</a>(</div>
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<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  <span class="stringliteral">"aes_signing_key"</span>, FLAGS_aes_signing_key, aes, <span class="keyword">true</span>, aes_label)) {</div>
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<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  success = <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  }</div>
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<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  <span class="keywordflow">if</span> (!<a class="code" href="../../db/d09/namespaceedash__packager.html#a5836ddf029d56f4a8dd43a7b4d8dbaff">ValidateFlag</a>(</div>
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<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  <span class="stringliteral">"aes_signing_iv"</span>, FLAGS_aes_signing_iv, aes, <span class="keyword">true</span>, aes_label)) {</div>
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<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  success = <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  }</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>  <span class="keyword">const</span> <span class="keywordtype">bool</span> rsa = !FLAGS_signer.empty() && FLAGS_aes_signing_key.empty() &&</div>
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<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  FLAGS_aes_signing_iv.empty();</div>
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<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  <span class="keyword">const</span> <span class="keywordtype">char</span> rsa_label[] =</div>
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<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  <span class="stringliteral">"--signer is specified and exclusive with --aes_signing_key/iv"</span>;</div>
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<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  <span class="comment">// rsa_signing_key_path is associated with rsa_signing.</span></div>
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<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  <span class="keywordflow">if</span> (!<a class="code" href="../../db/d09/namespaceedash__packager.html#a5836ddf029d56f4a8dd43a7b4d8dbaff">ValidateFlag</a>(<span class="stringliteral">"rsa_signing_key_path"</span>,</div>
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<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  FLAGS_rsa_signing_key_path,</div>
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<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  rsa,</div>
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<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  <span class="keyword">true</span>,</div>
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<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  rsa_label)) {</div>
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<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  success = <span class="keyword">false</span>;</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> </div>
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<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  <span class="keywordflow">if</span> (!FLAGS_signer.empty() &&</div>
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<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  (FLAGS_aes_signing_key.empty() || FLAGS_aes_signing_iv.empty()) &&</div>
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<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  FLAGS_rsa_signing_key_path.empty()) {</div>
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<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  <a class="code" href="../../db/d09/namespaceedash__packager.html#a64d35a221086349dfbd1acefee2aaef1">PrintError</a>(</div>
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<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  <span class="stringliteral">"--aes_signing_key/iv or --rsa_signing_key_path is required with "</span></div>
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<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  <span class="stringliteral">"--signer."</span>);</div>
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<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  success = <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  }</div>
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<div class="line"><a name="l00143"></a><span class="lineno"> 143</span> </div>
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<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  <span class="keywordflow">if</span> (FLAGS_crypto_period_duration < 0) {</div>
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<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  <a class="code" href="../../db/d09/namespaceedash__packager.html#a64d35a221086349dfbd1acefee2aaef1">PrintError</a>(<span class="stringliteral">"--crypto_period_duration should not be negative."</span>);</div>
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<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  success = <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  }</div>
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<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  <span class="keywordflow">return</span> success;</div>
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<div class="line"><a name="l00149"></a><span class="lineno"> 149</span> }</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> } <span class="comment">// namespace edash_packager</span></div>
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<div class="ttc" id="namespaceedash__packager_html_a95bb52262b99e97fd7f8f9f0075fe1e6"><div class="ttname"><a href="../../db/d09/namespaceedash__packager.html#a95bb52262b99e97fd7f8f9f0075fe1e6">edash_packager::ValidateWidevineCryptoFlags</a></div><div class="ttdeci">bool ValidateWidevineCryptoFlags()</div><div class="ttdef"><b>Definition:</b> <a href="../../d0/d42/widevine__encryption__flags_8cc_source.html#l00056">widevine_encryption_flags.cc:56</a></div></div>
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<div class="ttc" id="namespaceedash__packager_html_a5836ddf029d56f4a8dd43a7b4d8dbaff"><div class="ttname"><a href="../../db/d09/namespaceedash__packager.html#a5836ddf029d56f4a8dd43a7b4d8dbaff">edash_packager::ValidateFlag</a></div><div class="ttdeci">bool ValidateFlag(const char *flag_name, const std::string &flag_value, bool condition, bool optional, const char *label)</div><div class="ttdef"><b>Definition:</b> <a href="../../de/dad/validate__flag_8cc_source.html#l00017">validate_flag.cc:17</a></div></div>
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<div class="ttc" id="namespaceedash__packager_html_a64d35a221086349dfbd1acefee2aaef1"><div class="ttname"><a href="../../db/d09/namespaceedash__packager.html#a64d35a221086349dfbd1acefee2aaef1">edash_packager::PrintError</a></div><div class="ttdeci">void PrintError(const std::string &error_message)</div><div class="ttdef"><b>Definition:</b> <a href="../../de/dad/validate__flag_8cc_source.html#l00036">validate_flag.cc:36</a></div></div>
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