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<li class="navelem"><a class="el" href="dir_df9c78dcf3f59a33b12284f95992a64b.html">ripple</a></li><li class="navelem"><a class="el" href="dir_f4afb74df24474efa0cc7e8ea3ddd5ce.html">rpc</a></li> </ul>
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<div class="title">CTID.h</div> </div>
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span>&#160;<span class="comment">//------------------------------------------------------------------------------</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span>&#160;<span class="comment">/*</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span>&#160;<span class="comment"> This file is part of rippled: https://github.com/ripple/rippled</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span>&#160;<span class="comment"> Copyright (c) 2019 Ripple Labs Inc.</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span>&#160;<span class="comment"> Permission to use, copy, modify, and/or distribute this software for any</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span>&#160;<span class="comment"> purpose with or without fee is hereby granted, provided that the above</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span>&#160;<span class="comment"> copyright notice and this permission notice appear in all copies.</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span>&#160;<span class="comment"> THE SOFTWARE IS PROVIDED &quot;AS IS&quot; AND THE AUTHOR DISCLAIMS ALL WARRANTIES</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span>&#160;<span class="comment"> WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span>&#160;<span class="comment"> MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span>&#160;<span class="comment"> ANY SPECIAL , DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160;<span class="comment"> WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span>&#160;<span class="comment"> ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span>&#160;<span class="comment"> OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span>&#160;<span class="comment">*/</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span>&#160;<span class="comment">//==============================================================================</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>&#160; </div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>&#160;<span class="preprocessor">#ifndef RIPPLE_RPC_CTID_H_INCLUDED</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>&#160;<span class="preprocessor">#define RIPPLE_RPC_CTID_H_INCLUDED</span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>&#160; </div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>&#160;<span class="preprocessor">#include &lt;boost/algorithm/string/predicate.hpp&gt;</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>&#160;<span class="preprocessor">#include &lt;boost/regex.hpp&gt;</span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>&#160;<span class="preprocessor">#include &lt;<a class="codeRef" href="http://en.cppreference.com/w/cpp/header/optional.html">optional</a>&gt;</span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>&#160;<span class="preprocessor">#include &lt;<a class="codeRef" href="http://en.cppreference.com/w/cpp/header/regex.html">regex</a>&gt;</span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>&#160;<span class="preprocessor">#include &lt;<a class="codeRef" href="http://en.cppreference.com/w/cpp/header/sstream.html">sstream</a>&gt;</span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>&#160; </div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>&#160;<span class="keyword">namespace </span><a class="code" href="namespaceripple.html">ripple</a> {</div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>&#160; </div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>&#160;<span class="keyword">namespace </span>RPC {</div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>&#160; </div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>&#160;<span class="keyword">inline</span> <a class="codeRef" href="http://en.cppreference.com/w/cpp/utility/optional.html">std::optional&lt;std::string&gt;</a></div>
<div class="line"><a name="l00034"></a><span class="lineno"><a class="line" href="namespaceripple_1_1RPC.html#a1832b06f613fc4f81a5183c79656e047"> 34</a></span>&#160;<a class="code" href="namespaceripple_1_1RPC.html#a1832b06f613fc4f81a5183c79656e047">encodeCTID</a>(</div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>&#160; uint32_t ledger_seq,</div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>&#160; uint16_t txn_index,</div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>&#160; uint16_t network_id) noexcept</div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>&#160;{</div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>&#160; <span class="keywordflow">if</span> (ledger_seq &gt; 0x0FFF<span class="stringliteral">&#39;FFFF)</span></div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>&#160;<span class="stringliteral"> return {};</span></div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>&#160;<span class="stringliteral"></span> </div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>&#160;<span class="stringliteral"> uint64_t ctidValue =</span></div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>&#160;<span class="stringliteral"> ((0xC000&#39;</span>0000ULL + <span class="keyword">static_cast&lt;</span>uint64_t<span class="keyword">&gt;</span>(ledger_seq)) &lt;&lt; 32) +</div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>&#160; (<span class="keyword">static_cast&lt;</span>uint64_t<span class="keyword">&gt;</span>(txn_index) &lt;&lt; 16) + network_id;</div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>&#160; </div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>&#160; <a class="codeRef" href="http://en.cppreference.com/w/cpp/io/basic_stringstream.html">std::stringstream</a> buffer;</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>&#160; buffer &lt;&lt; <a class="codeRef" href="http://en.cppreference.com/w/cpp/io/manip/hex.html">std::hex</a> &lt;&lt; <a class="codeRef" href="http://en.cppreference.com/w/cpp/io/manip/uppercase.html">std::uppercase</a> &lt;&lt; <a class="codeRef" href="http://en.cppreference.com/w/cpp/io/manip/setfill.html">std::setfill</a>(<span class="charliteral">&#39;0&#39;</span>) &lt;&lt; <a class="codeRef" href="http://en.cppreference.com/w/cpp/io/manip/setw.html">std::setw</a>(16)</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>&#160; &lt;&lt; ctidValue;</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>&#160; <span class="keywordflow">return</span> {buffer.<a class="codeRef" href="http://en.cppreference.com/w/cpp/io/basic_stringstream/str.html">str</a>()};</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>&#160;}</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>&#160; </div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>&#160;<span class="keyword">inline</span> <a class="codeRef" href="http://en.cppreference.com/w/cpp/utility/optional.html">std::optional&lt;std::tuple&lt;uint32_t, uint16_t, uint16_t&gt;</a>&gt;</div>
<div class="line"><a name="l00054"></a><span class="lineno"><a class="line" href="namespaceripple_1_1RPC.html#ae8f1a8d1097638e3dca9ef69418c8c67"> 54</a></span>&#160;<a class="code" href="namespaceripple_1_1RPC.html#ae8f1a8d1097638e3dca9ef69418c8c67">decodeCTID</a>(<span class="keyword">const</span> T ctid) noexcept</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>&#160;{</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>&#160; uint64_t ctidValue{0};</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160; <span class="keywordflow">if</span> constexpr (</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>&#160; std::is_same_v&lt;T, std::string&gt; || std::is_same_v&lt;T, char*&gt; ||</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>&#160; std::is_same_v&lt;T, const char*&gt; || std::is_same_v&lt;T, std::string_view&gt;)</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>&#160; {</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>&#160; <a class="codeRef" href="http://en.cppreference.com/w/cpp/string/basic_string.html">std::string</a> <span class="keyword">const</span> ctidString(ctid);</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>&#160; </div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>&#160; <span class="keywordflow">if</span> (ctidString.<a class="codeRef" href="http://en.cppreference.com/w/cpp/string/basic_string/size.html">length</a>() != 16)</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160; <span class="keywordflow">return</span> {};</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>&#160; </div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>&#160; <span class="keywordflow">if</span> (!boost::regex_match(ctidString, boost::regex(<span class="stringliteral">&quot;^[0-9A-F]+$&quot;</span>)))</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>&#160; <span class="keywordflow">return</span> {};</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>&#160; </div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>&#160; ctidValue = <a class="codeRef" href="http://en.cppreference.com/w/cpp/string/basic_string/stoul.html">std::stoull</a>(ctidString, <span class="keyword">nullptr</span>, 16);</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>&#160; }</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>&#160; <span class="keywordflow">else</span> <span class="keywordflow">if</span> constexpr (std::is_integral_v&lt;T&gt;)</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>&#160; ctidValue = ctid;</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>&#160; <span class="keywordflow">else</span></div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>&#160; <span class="keywordflow">return</span> {};</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>&#160; </div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>&#160; <span class="keywordflow">if</span> ((ctidValue &amp; 0xF000<span class="stringliteral">&#39;0000&#39;</span>0000<span class="stringliteral">&#39;0000ULL) != 0xC000&#39;</span>0000<span class="stringliteral">&#39;0000&#39;</span>0000ULL)</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>&#160; <span class="keywordflow">return</span> {};</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>&#160; </div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>&#160; uint32_t ledger_seq = (ctidValue &gt;&gt; 32) &amp; 0xFFFF<span class="stringliteral">&#39;FFFUL;</span></div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>&#160;<span class="stringliteral"> uint16_t txn_index = (ctidValue &gt;&gt; 16) &amp; 0xFFFFU;</span></div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>&#160;<span class="stringliteral"> uint16_t network_id = ctidValue &amp; 0xFFFFU;</span></div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>&#160;<span class="stringliteral"> return {{ledger_seq, txn_index, network_id}};</span></div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>&#160;<span class="stringliteral">}</span></div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>&#160;<span class="stringliteral"></span> </div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>&#160;<span class="stringliteral">} // namespace RPC</span></div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>&#160;<span class="stringliteral">} // namespace ripple</span></div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>&#160;<span class="stringliteral"></span> </div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>&#160;<span class="stringliteral">#endif</span></div>
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<div class="ttc" id="anamespaceripple_html"><div class="ttname"><a href="namespaceripple.html">ripple</a></div><div class="ttdoc">Use hash_* containers for keys that do not need a cryptographically secure hashing algorithm.</div><div class="ttdef"><b>Definition:</b> <a href="RCLCensorshipDetector_8h_source.html#l00029">RCLCensorshipDetector.h:29</a></div></div>
<div class="ttc" id="aoptional_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/header/optional.html">optional</a></div></div>
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