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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><li class="navelem"><a class="el" href="dir_72652aacd0eb4ee32af795650dd02b37.html">handlers</a></li> </ul>
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<div class="title">Random.cpp</div> </div>
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">//------------------------------------------------------------------------------</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"> This file is part of rippled: https://github.com/ripple/rippled</span></div>
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<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> Copyright (c) 2012-2014 Ripple Labs Inc.</span></div>
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<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"></span> </div>
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<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> Permission to use, copy, modify, and/or distribute this software for any</span></div>
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<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> purpose with or without fee is hereby granted, provided that the above</span></div>
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<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> copyright notice and this permission notice appear in all copies.</span></div>
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<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"></span> </div>
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<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES</span></div>
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<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF</span></div>
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<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR</span></div>
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<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> ANY SPECIAL , DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES</span></div>
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<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN</span></div>
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<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF</span></div>
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<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.</span></div>
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<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment">*/</span></div>
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<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment">//==============================================================================</span></div>
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<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>  </div>
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<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="preprocessor">#include <ripple/basics/base_uint.h></span></div>
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<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="preprocessor">#include <ripple/beast/utility/rngfill.h></span></div>
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<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="preprocessor">#include <ripple/crypto/csprng.h></span></div>
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<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="preprocessor">#include <ripple/json/json_value.h></span></div>
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<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="preprocessor">#include <ripple/net/RPCErr.h></span></div>
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<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor">#include <ripple/protocol/ErrorCodes.h></span></div>
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<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="preprocessor">#include <ripple/protocol/jss.h></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">namespace </span><a class="code" href="namespaceripple.html">ripple</a> {</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">namespace </span>RPC {</div>
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<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="keyword">struct </span>JsonContext;</div>
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<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> }</div>
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<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  </div>
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<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="comment">// Result:</span></div>
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<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="comment">// {</span></div>
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<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="comment">// random: <uint256></span></div>
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<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="comment">// }</span></div>
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<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <a class="code" href="classJson_1_1Value.html">Json::Value</a></div>
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<div class="line"><a name="l00039"></a><span class="lineno"><a class="line" href="namespaceripple.html#a8d8b456b90badc34e0e52979f6364842"> 39</a></span> <a class="code" href="namespaceripple.html#a8d8b456b90badc34e0e52979f6364842">doRandom</a>(<a class="code" href="structripple_1_1RPC_1_1JsonContext.html">RPC::JsonContext</a>& context)</div>
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<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> {</div>
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<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  <span class="comment">// TODO(tom): the try/catch is almost certainly redundant, we catch at the</span></div>
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<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  <span class="comment">// top level too.</span></div>
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<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  <span class="keywordflow">try</span></div>
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<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  {</div>
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<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  <a class="code" href="classripple_1_1base__uint.html">uint256</a> rand;</div>
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<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <a class="code" href="namespacebeast.html#a6894f6dcd09bceda3986ebb1ea7a3eed">beast::rngfill</a>(rand.begin(), rand.size(), <a class="code" href="namespaceripple.html#a64faabbdff83da8b7fd7aaafbb937867">crypto_prng</a>());</div>
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<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  </div>
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<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <a class="code" href="classJson_1_1Value.html">Json::Value</a> jvResult;</div>
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<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  jvResult[jss::random] = <a class="code" href="namespaceripple.html#a96888695e8d79474e080c334f149e30a">to_string</a>(rand);</div>
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<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <span class="keywordflow">return</span> jvResult;</div>
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<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  }</div>
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<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <span class="keywordflow">catch</span> (<a class="codeRef" href="http://en.cppreference.com/w/cpp/error/exception.html">std::exception</a> <span class="keyword">const</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="keywordflow">return</span> <a class="code" href="namespaceripple.html#ab114d40490d1a6a0ab2fa6053167d461">rpcError</a>(<a class="code" href="namespaceripple.html#a32d6d3ce1a48272b677d2c88b1d30932a839833d48b635d8df6a9176274ae922f">rpcINTERNAL</a>);</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> }</div>
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<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  </div>
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<div class="line"><a name="l00058"></a><span class="lineno"> 58</span> } <span class="comment">// namespace ripple</span></div>
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</div><!-- fragment --></div><!-- contents -->
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<div class="ttc" id="astructripple_1_1RPC_1_1JsonContext_html"><div class="ttname"><a href="structripple_1_1RPC_1_1JsonContext.html">ripple::RPC::JsonContext</a></div><div class="ttdef"><b>Definition:</b> <a href="Context_8h_source.html#l00053">Context.h:53</a></div></div>
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<div class="ttc" id="aexception_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/error/exception.html">std::exception</a></div><div class="ttdoc">STL class.</div></div>
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<div class="ttc" id="anamespaceripple_html_a64faabbdff83da8b7fd7aaafbb937867"><div class="ttname"><a href="namespaceripple.html#a64faabbdff83da8b7fd7aaafbb937867">ripple::crypto_prng</a></div><div class="ttdeci">csprng_engine & crypto_prng()</div><div class="ttdoc">The default cryptographically secure PRNG.</div><div class="ttdef"><b>Definition:</b> <a href="csprng_8cpp_source.html#l00108">csprng.cpp:108</a></div></div>
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<div class="ttc" id="anamespaceripple_html_a96888695e8d79474e080c334f149e30a"><div class="ttname"><a href="namespaceripple.html#a96888695e8d79474e080c334f149e30a">ripple::to_string</a></div><div class="ttdeci">std::string to_string(ListDisposition disposition)</div><div class="ttdef"><b>Definition:</b> <a href="ValidatorList_8cpp_source.html#l00042">ValidatorList.cpp:42</a></div></div>
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<div class="ttc" id="aclassripple_1_1base__uint_html"><div class="ttname"><a href="classripple_1_1base__uint.html">ripple::base_uint</a></div><div class="ttdoc">Integers of any length that is a multiple of 32-bits.</div><div class="ttdef"><b>Definition:</b> <a href="base__uint_8h_source.html#l00073">base_uint.h:73</a></div></div>
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<div class="ttc" id="anamespaceripple_html_a8d8b456b90badc34e0e52979f6364842"><div class="ttname"><a href="namespaceripple.html#a8d8b456b90badc34e0e52979f6364842">ripple::doRandom</a></div><div class="ttdeci">Json::Value doRandom(RPC::JsonContext &)</div><div class="ttdef"><b>Definition:</b> <a href="Random_8cpp_source.html#l00039">Random.cpp:39</a></div></div>
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<div class="ttc" id="anamespaceripple_html_ab114d40490d1a6a0ab2fa6053167d461"><div class="ttname"><a href="namespaceripple.html#ab114d40490d1a6a0ab2fa6053167d461">ripple::rpcError</a></div><div class="ttdeci">Json::Value rpcError(int iError, Json::Value jvResult)</div><div class="ttdef"><b>Definition:</b> <a href="RPCErr_8cpp_source.html#l00029">RPCErr.cpp:29</a></div></div>
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<div class="ttc" id="anamespaceripple_html_a32d6d3ce1a48272b677d2c88b1d30932a839833d48b635d8df6a9176274ae922f"><div class="ttname"><a href="namespaceripple.html#a32d6d3ce1a48272b677d2c88b1d30932a839833d48b635d8df6a9176274ae922f">ripple::rpcINTERNAL</a></div><div class="ttdeci">@ rpcINTERNAL</div><div class="ttdef"><b>Definition:</b> <a href="ErrorCodes_8h_source.html#l00130">ErrorCodes.h:130</a></div></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>
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<div class="ttc" id="anamespacebeast_html_a6894f6dcd09bceda3986ebb1ea7a3eed"><div class="ttname"><a href="namespacebeast.html#a6894f6dcd09bceda3986ebb1ea7a3eed">beast::rngfill</a></div><div class="ttdeci">void rngfill(void *buffer, std::size_t bytes, Generator &g)</div><div class="ttdef"><b>Definition:</b> <a href="rngfill_8h_source.html#l00032">rngfill.h:32</a></div></div>
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<div class="ttc" id="aclassJson_1_1Value_html"><div class="ttname"><a href="classJson_1_1Value.html">Json::Value</a></div><div class="ttdoc">Represents a JSON value.</div><div class="ttdef"><b>Definition:</b> <a href="json__value_8h_source.html#l00145">json_value.h:145</a></div></div>
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