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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">PayChanClaim.cpp</div> </div>
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<div class="contents">
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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/app/main/Application.h></span></div>
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<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="preprocessor">#include <ripple/basics/StringUtilities.h></span></div>
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<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="preprocessor">#include <ripple/ledger/ReadView.h></span></div>
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<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="preprocessor">#include <ripple/net/RPCErr.h></span></div>
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<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="preprocessor">#include <ripple/protocol/ErrorCodes.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/PayChan.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/STAccount.h></span></div>
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<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="preprocessor">#include <ripple/protocol/jss.h></span></div>
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<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="preprocessor">#include <ripple/resource/Fees.h></span></div>
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<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="preprocessor">#include <ripple/rpc/Context.h></span></div>
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<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="preprocessor">#include <ripple/rpc/impl/RPCHelpers.h></span></div>
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<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="preprocessor">#include <ripple/rpc/impl/Tuning.h></span></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> <span class="preprocessor">#include <<a class="codeRef" href="http://en.cppreference.com/w/cpp/header/optional.html">optional</a>></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="keyword">namespace </span><a class="code" href="namespaceripple.html">ripple</a> {</div>
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<div class="line"><a name="l00036"></a><span class="lineno"> 36</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> <span class="comment">// secret_key: <signing_secret_key></span></div>
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<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="comment">// key_type: optional; either ed25519 or secp256k1 (default to secp256k1)</span></div>
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<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="comment">// channel_id: 256-bit channel id</span></div>
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<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="comment">// drops: 64-bit uint (as string)</span></div>
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<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="comment">// }</span></div>
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<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <a class="code" href="classJson_1_1Value.html">Json::Value</a></div>
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<div class="line"><a name="l00044"></a><span class="lineno"><a class="line" href="namespaceripple.html#a2c769c15b1089824f248f42f237278b7"> 44</a></span> <a class="code" href="namespaceripple.html#a2c769c15b1089824f248f42f237278b7">doChannelAuthorize</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="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="keyword">auto</span> <span class="keyword">const</span>& params(context.<a class="code" href="structripple_1_1RPC_1_1JsonContext.html#a036b2c14552fbca49011c3d0e78017fa">params</a>);</div>
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<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  <span class="keywordflow">for</span> (<span class="keyword">auto</span> <span class="keyword">const</span>& p : {jss::channel_id, jss::amount})</div>
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<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <span class="keywordflow">if</span> (!params.isMember(p))</div>
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<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <span class="keywordflow">return</span> <a class="code" href="namespaceripple_1_1RPC.html#aec2e1163b39a450d3917af9dd15b0f06">RPC::missing_field_error</a>(p);</div>
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<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  </div>
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<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <span class="comment">// Compatibility if a key type isn't specified. If it is, the</span></div>
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<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <span class="comment">// keypairForSignature code will validate parameters and return</span></div>
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<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <span class="comment">// the appropriate error.</span></div>
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<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="keywordflow">if</span> (!params.isMember(jss::key_type) && !params.isMember(jss::secret))</div>
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<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <span class="keywordflow">return</span> <a class="code" href="namespaceripple_1_1RPC.html#aec2e1163b39a450d3917af9dd15b0f06">RPC::missing_field_error</a>(jss::secret);</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>  <a class="code" href="classJson_1_1Value.html">Json::Value</a> result;</div>
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<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  <span class="keyword">auto</span> <span class="keyword">const</span> [pk, sk] = <a class="code" href="namespaceripple_1_1RPC.html#a9bccc1b478a5bda71c12c100373780f4">RPC::keypairForSignature</a>(params, result);</div>
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<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <span class="keywordflow">if</span> (<a class="code" href="namespaceripple_1_1RPC.html#a1a79f0c33d1405fe85c40d63a49658bd">RPC::contains_error</a>(result))</div>
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<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  <span class="keywordflow">return</span> result;</div>
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<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  </div>
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<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  <a class="code" href="classripple_1_1base__uint.html">uint256</a> channelId;</div>
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<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <span class="keywordflow">if</span> (!channelId.<a class="code" href="classripple_1_1base__uint.html#a698d3fd0c0f0155995c87d2f48ac90d5">parseHex</a>(params[jss::channel_id].asString()))</div>
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<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <span class="keywordflow">return</span> <a class="code" href="namespaceripple.html#ab114d40490d1a6a0ab2fa6053167d461">rpcError</a>(<a class="code" href="namespaceripple.html#a32d6d3ce1a48272b677d2c88b1d30932aa67c34c5d359f52c3f1fdcf2ce06dbc9">rpcCHANNEL_MALFORMED</a>);</div>
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<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  </div>
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<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <a class="codeRef" href="http://en.cppreference.com/w/cpp/utility/optional.html">std::optional<std::uint64_t></a> <span class="keyword">const</span> optDrops = params[jss::amount].isString()</div>
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<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  ? <a class="code" href="namespaceripple.html#aafcd8eccce69f1a6acf78dd19a09b3ff">to_uint64</a>(params[jss::amount].asString())</div>
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<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  : std::nullopt;</div>
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<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  </div>
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<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <span class="keywordflow">if</span> (!optDrops)</div>
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<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <span class="keywordflow">return</span> <a class="code" href="namespaceripple.html#ab114d40490d1a6a0ab2fa6053167d461">rpcError</a>(<a class="code" href="namespaceripple.html#a32d6d3ce1a48272b677d2c88b1d30932a60badd0db2ef5b154d6101fe7b845e39">rpcCHANNEL_AMT_MALFORMED</a>);</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>  <a class="codeRef" href="http://en.cppreference.com/w/cpp/types/integer.html">std::uint64_t</a> <span class="keyword">const</span> drops = *optDrops;</div>
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<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  </div>
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<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <a class="code" href="classripple_1_1Serializer.html">Serializer</a> msg;</div>
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<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <a class="code" href="namespaceripple.html#a70465c94c8c462001ec31e94c8e92183">serializePayChanAuthorization</a>(msg, channelId, <a class="code" href="classripple_1_1XRPAmount.html">XRPAmount</a>(drops));</div>
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<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  </div>
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<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <span class="keywordflow">try</span></div>
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<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  {</div>
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<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <span class="keyword">auto</span> <span class="keyword">const</span> buf = <a class="code" href="namespaceripple.html#a93d957d4aa50cd0c2b37f05453a0dd68">sign</a>(pk, sk, msg.<a class="code" href="classripple_1_1Serializer.html#a394c3299f6cfcebdaa4bc98ec0c602d6">slice</a>());</div>
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<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  result[jss::signature] = <a class="code" href="namespaceripple.html#a86e358ce3f06ff049af13c2342791cf8">strHex</a>(buf);</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>  <span class="keywordflow">catch</span> (<a class="codeRef" href="http://en.cppreference.com/w/cpp/error/exception.html">std::exception</a>&)</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>  result =</div>
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<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <a class="code" href="namespaceripple_1_1RPC.html#a2cd6200f6709780fcf1dd26ec9cd2866">RPC::make_error</a>(<a class="code" href="namespaceripple.html#a32d6d3ce1a48272b677d2c88b1d30932a839833d48b635d8df6a9176274ae922f">rpcINTERNAL</a>, <span class="stringliteral">"Exception occurred during signing."</span>);</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="keywordflow">return</span> result;</div>
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<div class="line"><a name="l00089"></a><span class="lineno"> 89</span> }</div>
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<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  </div>
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<div class="line"><a name="l00091"></a><span class="lineno"> 91</span> <span class="comment">// {</span></div>
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<div class="line"><a name="l00092"></a><span class="lineno"> 92</span> <span class="comment">// public_key: <public_key></span></div>
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<div class="line"><a name="l00093"></a><span class="lineno"> 93</span> <span class="comment">// channel_id: 256-bit channel id</span></div>
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<div class="line"><a name="l00094"></a><span class="lineno"> 94</span> <span class="comment">// drops: 64-bit uint (as string)</span></div>
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<div class="line"><a name="l00095"></a><span class="lineno"> 95</span> <span class="comment">// signature: signature to verify</span></div>
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<div class="line"><a name="l00096"></a><span class="lineno"> 96</span> <span class="comment">// }</span></div>
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<div class="line"><a name="l00097"></a><span class="lineno"> 97</span> <a class="code" href="classJson_1_1Value.html">Json::Value</a></div>
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<div class="line"><a name="l00098"></a><span class="lineno"><a class="line" href="namespaceripple.html#a15e07467cf404ade292a4c47e80c1301"> 98</a></span> <a class="code" href="namespaceripple.html#a15e07467cf404ade292a4c47e80c1301">doChannelVerify</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="l00099"></a><span class="lineno"> 99</span> {</div>
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<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  <span class="keyword">auto</span> <span class="keyword">const</span>& params(context.<a class="code" href="structripple_1_1RPC_1_1JsonContext.html#a036b2c14552fbca49011c3d0e78017fa">params</a>);</div>
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<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <span class="keywordflow">for</span> (<span class="keyword">auto</span> <span class="keyword">const</span>& p :</div>
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<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  {jss::public_key, jss::channel_id, jss::amount, jss::signature})</div>
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<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  <span class="keywordflow">if</span> (!params.isMember(p))</div>
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<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <span class="keywordflow">return</span> <a class="code" href="namespaceripple_1_1RPC.html#aec2e1163b39a450d3917af9dd15b0f06">RPC::missing_field_error</a>(p);</div>
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<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  </div>
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<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  <a class="codeRef" href="http://en.cppreference.com/w/cpp/utility/optional.html">std::optional<PublicKey></a> pk;</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>  <a class="codeRef" href="http://en.cppreference.com/w/cpp/string/basic_string.html">std::string</a> <span class="keyword">const</span> strPk = params[jss::public_key].asString();</div>
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<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  pk = parseBase58<PublicKey>(<a class="code" href="namespaceripple.html#a1bf8df553d36589191c8057c136cce03ab23f52a56f27cc97abe221ea3c5cd56c">TokenType::AccountPublic</a>, strPk);</div>
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<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  </div>
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<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  <span class="keywordflow">if</span> (!pk)</div>
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<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  {</div>
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<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  <span class="keyword">auto</span> pkHex = <a class="code" href="namespaceripple.html#a3eae95a694e72bfb1b7b5c0e43114975">strUnHex</a>(strPk);</div>
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<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  <span class="keywordflow">if</span> (!pkHex)</div>
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<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  <span class="keywordflow">return</span> <a class="code" href="namespaceripple.html#ab114d40490d1a6a0ab2fa6053167d461">rpcError</a>(<a class="code" href="namespaceripple.html#a32d6d3ce1a48272b677d2c88b1d30932a78e5ffef07cc85fedafde770039313bc">rpcPUBLIC_MALFORMED</a>);</div>
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<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  <span class="keyword">auto</span> <span class="keyword">const</span> pkType = <a class="code" href="namespaceripple.html#adc1f8a2c9b47d7c08e671ad3473e9d3a">publicKeyType</a>(<a class="code" href="namespaceripple.html#aabe37451093c21757855542d68fba3ce">makeSlice</a>(*pkHex));</div>
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<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  <span class="keywordflow">if</span> (!pkType)</div>
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<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  <span class="keywordflow">return</span> <a class="code" href="namespaceripple.html#ab114d40490d1a6a0ab2fa6053167d461">rpcError</a>(<a class="code" href="namespaceripple.html#a32d6d3ce1a48272b677d2c88b1d30932a78e5ffef07cc85fedafde770039313bc">rpcPUBLIC_MALFORMED</a>);</div>
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<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  pk.<a class="codeRef" href="http://en.cppreference.com/w/cpp/utility/optional/emplace.html">emplace</a>(<a class="code" href="namespaceripple.html#aabe37451093c21757855542d68fba3ce">makeSlice</a>(*pkHex));</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>  </div>
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<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  <a class="code" href="classripple_1_1base__uint.html">uint256</a> channelId;</div>
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<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  <span class="keywordflow">if</span> (!channelId.<a class="code" href="classripple_1_1base__uint.html#a698d3fd0c0f0155995c87d2f48ac90d5">parseHex</a>(params[jss::channel_id].asString()))</div>
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<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  <span class="keywordflow">return</span> <a class="code" href="namespaceripple.html#ab114d40490d1a6a0ab2fa6053167d461">rpcError</a>(<a class="code" href="namespaceripple.html#a32d6d3ce1a48272b677d2c88b1d30932aa67c34c5d359f52c3f1fdcf2ce06dbc9">rpcCHANNEL_MALFORMED</a>);</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>  <a class="codeRef" href="http://en.cppreference.com/w/cpp/utility/optional.html">std::optional<std::uint64_t></a> <span class="keyword">const</span> optDrops = params[jss::amount].isString()</div>
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<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  ? <a class="code" href="namespaceripple.html#aafcd8eccce69f1a6acf78dd19a09b3ff">to_uint64</a>(params[jss::amount].asString())</div>
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<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  : std::nullopt;</div>
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<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  </div>
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<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  <span class="keywordflow">if</span> (!optDrops)</div>
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<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  <span class="keywordflow">return</span> <a class="code" href="namespaceripple.html#ab114d40490d1a6a0ab2fa6053167d461">rpcError</a>(<a class="code" href="namespaceripple.html#a32d6d3ce1a48272b677d2c88b1d30932a60badd0db2ef5b154d6101fe7b845e39">rpcCHANNEL_AMT_MALFORMED</a>);</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>  <a class="codeRef" href="http://en.cppreference.com/w/cpp/types/integer.html">std::uint64_t</a> <span class="keyword">const</span> drops = *optDrops;</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>  <span class="keyword">auto</span> sig = <a class="code" href="namespaceripple.html#a3eae95a694e72bfb1b7b5c0e43114975">strUnHex</a>(params[jss::signature].asString());</div>
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<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  <span class="keywordflow">if</span> (!sig || !sig->size())</div>
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<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  <span class="keywordflow">return</span> <a class="code" href="namespaceripple.html#ab114d40490d1a6a0ab2fa6053167d461">rpcError</a>(<a class="code" href="namespaceripple.html#a32d6d3ce1a48272b677d2c88b1d30932a82ddebc5ec7a37ff38892487277bf9c4">rpcINVALID_PARAMS</a>);</div>
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<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  </div>
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<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  <a class="code" href="classripple_1_1Serializer.html">Serializer</a> msg;</div>
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<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  <a class="code" href="namespaceripple.html#a70465c94c8c462001ec31e94c8e92183">serializePayChanAuthorization</a>(msg, channelId, <a class="code" href="classripple_1_1XRPAmount.html">XRPAmount</a>(drops));</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>  <a class="code" href="classJson_1_1Value.html">Json::Value</a> result;</div>
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<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  result[jss::signature_verified] =</div>
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<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  <a class="code" href="namespaceripple.html#ace4dd4a2d63cd976adb9fac9754ae785">verify</a>(*pk, msg.<a class="code" href="classripple_1_1Serializer.html#a394c3299f6cfcebdaa4bc98ec0c602d6">slice</a>(), <a class="code" href="namespaceripple.html#aabe37451093c21757855542d68fba3ce">makeSlice</a>(*sig), <span class="comment">/*canonical*/</span> <span class="keyword">true</span>);</div>
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<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  <span class="keywordflow">return</span> result;</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>  </div>
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<div class="line"><a name="l00149"></a><span class="lineno"> 149</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="anamespaceripple_html_aabe37451093c21757855542d68fba3ce"><div class="ttname"><a href="namespaceripple.html#aabe37451093c21757855542d68fba3ce">ripple::makeSlice</a></div><div class="ttdeci">std::enable_if_t< std::is_same< T, char >::value||std::is_same< T, unsigned char >::value, Slice > makeSlice(std::array< T, N > const &a)</div><div class="ttdef"><b>Definition:</b> <a href="Slice_8h_source.html#l00240">Slice.h:240</a></div></div>
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<div class="ttc" id="abasic_string_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/string/basic_string.html">std::string</a></div><div class="ttdoc">STL class.</div></div>
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<div class="ttc" id="anamespaceripple_html_a32d6d3ce1a48272b677d2c88b1d30932a82ddebc5ec7a37ff38892487277bf9c4"><div class="ttname"><a href="namespaceripple.html#a32d6d3ce1a48272b677d2c88b1d30932a82ddebc5ec7a37ff38892487277bf9c4">ripple::rpcINVALID_PARAMS</a></div><div class="ttdeci">@ rpcINVALID_PARAMS</div><div class="ttdef"><b>Definition:</b> <a href="ErrorCodes_8h_source.html#l00084">ErrorCodes.h:84</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_ace4dd4a2d63cd976adb9fac9754ae785"><div class="ttname"><a href="namespaceripple.html#ace4dd4a2d63cd976adb9fac9754ae785">ripple::verify</a></div><div class="ttdeci">bool verify(PublicKey const &publicKey, Slice const &m, Slice const &sig, bool mustBeFullyCanonical) noexcept</div><div class="ttdoc">Verify a signature on a message.</div><div class="ttdef"><b>Definition:</b> <a href="PublicKey_8cpp_source.html#l00268">PublicKey.cpp:268</a></div></div>
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<div class="ttc" id="aemplace_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/utility/optional/emplace.html">std::optional::emplace</a></div><div class="ttdeci">T emplace(T... args)</div></div>
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<div class="ttc" id="anamespaceripple_html_a15e07467cf404ade292a4c47e80c1301"><div class="ttname"><a href="namespaceripple.html#a15e07467cf404ade292a4c47e80c1301">ripple::doChannelVerify</a></div><div class="ttdeci">Json::Value doChannelVerify(RPC::JsonContext &)</div><div class="ttdef"><b>Definition:</b> <a href="PayChanClaim_8cpp_source.html#l00098">PayChanClaim.cpp:98</a></div></div>
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<div class="ttc" id="anamespaceripple_html_a70465c94c8c462001ec31e94c8e92183"><div class="ttname"><a href="namespaceripple.html#a70465c94c8c462001ec31e94c8e92183">ripple::serializePayChanAuthorization</a></div><div class="ttdeci">void serializePayChanAuthorization(Serializer &msg, uint256 const &key, XRPAmount const &amt)</div><div class="ttdef"><b>Definition:</b> <a href="protocol_2PayChan_8h_source.html#l00031">protocol/PayChan.h:31</a></div></div>
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<div class="ttc" id="anamespaceripple_1_1RPC_html_aec2e1163b39a450d3917af9dd15b0f06"><div class="ttname"><a href="namespaceripple_1_1RPC.html#aec2e1163b39a450d3917af9dd15b0f06">ripple::RPC::missing_field_error</a></div><div class="ttdeci">Json::Value missing_field_error(std::string const &name)</div><div class="ttdef"><b>Definition:</b> <a href="ErrorCodes_8h_source.html#l00243">ErrorCodes.h:243</a></div></div>
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<div class="ttc" id="anamespaceripple_html_adc1f8a2c9b47d7c08e671ad3473e9d3a"><div class="ttname"><a href="namespaceripple.html#adc1f8a2c9b47d7c08e671ad3473e9d3a">ripple::publicKeyType</a></div><div class="ttdeci">std::optional< KeyType > publicKeyType(Slice const &slice)</div><div class="ttdoc">Returns the type of public key.</div><div class="ttdef"><b>Definition:</b> <a href="PublicKey_8cpp_source.html#l00203">PublicKey.cpp:203</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#l00075">base_uint.h:75</a></div></div>
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<div class="ttc" id="anamespaceripple_1_1RPC_html_a1a79f0c33d1405fe85c40d63a49658bd"><div class="ttname"><a href="namespaceripple_1_1RPC.html#a1a79f0c33d1405fe85c40d63a49658bd">ripple::RPC::contains_error</a></div><div class="ttdeci">bool contains_error(Json::Value const &json)</div><div class="ttdoc">Returns true if the json contains an rpc error specification.</div><div class="ttdef"><b>Definition:</b> <a href="ErrorCodes_8cpp_source.html#l00225">ErrorCodes.cpp:225</a></div></div>
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<div class="ttc" id="anamespaceripple_html_a2c769c15b1089824f248f42f237278b7"><div class="ttname"><a href="namespaceripple.html#a2c769c15b1089824f248f42f237278b7">ripple::doChannelAuthorize</a></div><div class="ttdeci">Json::Value doChannelAuthorize(RPC::JsonContext &)</div><div class="ttdef"><b>Definition:</b> <a href="PayChanClaim_8cpp_source.html#l00044">PayChanClaim.cpp:44</a></div></div>
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<div class="ttc" id="anamespaceripple_html_aafcd8eccce69f1a6acf78dd19a09b3ff"><div class="ttname"><a href="namespaceripple.html#aafcd8eccce69f1a6acf78dd19a09b3ff">ripple::to_uint64</a></div><div class="ttdeci">std::optional< std::uint64_t > to_uint64(std::string const &s)</div></div>
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<div class="ttc" id="anamespaceripple_html_a32d6d3ce1a48272b677d2c88b1d30932a78e5ffef07cc85fedafde770039313bc"><div class="ttname"><a href="namespaceripple.html#a32d6d3ce1a48272b677d2c88b1d30932a78e5ffef07cc85fedafde770039313bc">ripple::rpcPUBLIC_MALFORMED</a></div><div class="ttdeci">@ rpcPUBLIC_MALFORMED</div><div class="ttdef"><b>Definition:</b> <a href="ErrorCodes_8h_source.html#l00117">ErrorCodes.h:117</a></div></div>
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<div class="ttc" id="aclassripple_1_1Serializer_html_a394c3299f6cfcebdaa4bc98ec0c602d6"><div class="ttname"><a href="classripple_1_1Serializer.html#a394c3299f6cfcebdaa4bc98ec0c602d6">ripple::Serializer::slice</a></div><div class="ttdeci">Slice slice() const noexcept</div><div class="ttdef"><b>Definition:</b> <a href="Serializer_8h_source.html#l00063">Serializer.h:63</a></div></div>
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<div class="ttc" id="ainteger_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/types/integer.html">std::uint64_t</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_a32d6d3ce1a48272b677d2c88b1d30932a60badd0db2ef5b154d6101fe7b845e39"><div class="ttname"><a href="namespaceripple.html#a32d6d3ce1a48272b677d2c88b1d30932a60badd0db2ef5b154d6101fe7b845e39">ripple::rpcCHANNEL_AMT_MALFORMED</a></div><div class="ttdeci">@ rpcCHANNEL_AMT_MALFORMED</div><div class="ttdef"><b>Definition:</b> <a href="ErrorCodes_8h_source.html#l00101">ErrorCodes.h:101</a></div></div>
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<div class="ttc" id="aclassripple_1_1Serializer_html"><div class="ttname"><a href="classripple_1_1Serializer.html">ripple::Serializer</a></div><div class="ttdef"><b>Definition:</b> <a href="Serializer_8h_source.html#l00039">Serializer.h:39</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="anamespaceripple_html_a93d957d4aa50cd0c2b37f05453a0dd68"><div class="ttname"><a href="namespaceripple.html#a93d957d4aa50cd0c2b37f05453a0dd68">ripple::sign</a></div><div class="ttdeci">Buffer sign(PublicKey const &pk, SecretKey const &sk, Slice const &m)</div><div class="ttdoc">Generate a signature for a message.</div><div class="ttdef"><b>Definition:</b> <a href="SecretKey_8cpp_source.html#l00238">SecretKey.cpp:238</a></div></div>
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<div class="ttc" id="anamespaceripple_1_1RPC_html_a9bccc1b478a5bda71c12c100373780f4"><div class="ttname"><a href="namespaceripple_1_1RPC.html#a9bccc1b478a5bda71c12c100373780f4">ripple::RPC::keypairForSignature</a></div><div class="ttdeci">std::pair< PublicKey, SecretKey > keypairForSignature(Json::Value const &params, Json::Value &error)</div><div class="ttdef"><b>Definition:</b> <a href="RPCHelpers_8cpp_source.html#l00713">RPCHelpers.cpp:713</a></div></div>
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<div class="ttc" id="anamespaceripple_html_a1bf8df553d36589191c8057c136cce03ab23f52a56f27cc97abe221ea3c5cd56c"><div class="ttname"><a href="namespaceripple.html#a1bf8df553d36589191c8057c136cce03ab23f52a56f27cc97abe221ea3c5cd56c">ripple::TokenType::AccountPublic</a></div><div class="ttdeci">@ AccountPublic</div></div>
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<div class="ttc" id="anamespaceripple_html_a32d6d3ce1a48272b677d2c88b1d30932aa67c34c5d359f52c3f1fdcf2ce06dbc9"><div class="ttname"><a href="namespaceripple.html#a32d6d3ce1a48272b677d2c88b1d30932aa67c34c5d359f52c3f1fdcf2ce06dbc9">ripple::rpcCHANNEL_MALFORMED</a></div><div class="ttdeci">@ rpcCHANNEL_MALFORMED</div><div class="ttdef"><b>Definition:</b> <a href="ErrorCodes_8h_source.html#l00100">ErrorCodes.h:100</a></div></div>
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<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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<div class="ttc" id="anamespaceripple_html_a86e358ce3f06ff049af13c2342791cf8"><div class="ttname"><a href="namespaceripple.html#a86e358ce3f06ff049af13c2342791cf8">ripple::strHex</a></div><div class="ttdeci">std::string strHex(FwdIt begin, FwdIt end)</div><div class="ttdef"><b>Definition:</b> <a href="strHex_8h_source.html#l00045">strHex.h:45</a></div></div>
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<div class="ttc" id="aclassripple_1_1base__uint_html_a698d3fd0c0f0155995c87d2f48ac90d5"><div class="ttname"><a href="classripple_1_1base__uint.html#a698d3fd0c0f0155995c87d2f48ac90d5">ripple::base_uint::parseHex</a></div><div class="ttdeci">constexpr bool parseHex(std::string_view sv)</div><div class="ttdoc">Parse a hex string into a base_uint.</div><div class="ttdef"><b>Definition:</b> <a href="base__uint_8h_source.html#l00475">base_uint.h:475</a></div></div>
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<div class="ttc" id="anamespaceripple_html_a3eae95a694e72bfb1b7b5c0e43114975"><div class="ttname"><a href="namespaceripple.html#a3eae95a694e72bfb1b7b5c0e43114975">ripple::strUnHex</a></div><div class="ttdeci">std::optional< Blob > strUnHex(std::size_t strSize, Iterator begin, Iterator end)</div><div class="ttdef"><b>Definition:</b> <a href="StringUtilities_8h_source.html#l00049">StringUtilities.h:49</a></div></div>
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<div class="ttc" id="astructripple_1_1RPC_1_1JsonContext_html_a036b2c14552fbca49011c3d0e78017fa"><div class="ttname"><a href="structripple_1_1RPC_1_1JsonContext.html#a036b2c14552fbca49011c3d0e78017fa">ripple::RPC::JsonContext::params</a></div><div class="ttdeci">Json::Value params</div><div class="ttdef"><b>Definition:</b> <a href="Context_8h_source.html#l00064">Context.h:64</a></div></div>
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<div class="ttc" id="anamespaceripple_1_1RPC_html_a2cd6200f6709780fcf1dd26ec9cd2866"><div class="ttname"><a href="namespaceripple_1_1RPC.html#a2cd6200f6709780fcf1dd26ec9cd2866">ripple::RPC::make_error</a></div><div class="ttdeci">Json::Value make_error(error_code_i code)</div><div class="ttdoc">Returns a new json object that reflects the error code.</div><div class="ttdef"><b>Definition:</b> <a href="ErrorCodes_8cpp_source.html#l00209">ErrorCodes.cpp:209</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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<div class="ttc" id="aclassripple_1_1XRPAmount_html"><div class="ttname"><a href="classripple_1_1XRPAmount.html">ripple::XRPAmount</a></div><div class="ttdef"><b>Definition:</b> <a href="XRPAmount_8h_source.html#l00046">XRPAmount.h:46</a></div></div>
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