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<title>libaaruformat: src/checksum/spamsum.c Source File</title>
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<div id="projectname">libaaruformat<span id="projectnumber"> 1.0</span>
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<div id="projectbrief">Aaru Data Preservation Suite - Format Library</div>
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<div class="header">
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<div class="headertitle"><div class="title">spamsum.c</div></div>
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<div class="contents">
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<a href="spamsum_8c.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno"> 1</span><span class="comment">/*</span></div>
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<div class="line"><a id="l00002" name="l00002"></a><span class="lineno"> 2</span><span class="comment"> * This file is part of the Aaru Data Preservation Suite.</span></div>
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<div class="line"><a id="l00003" name="l00003"></a><span class="lineno"> 3</span><span class="comment"> * Copyright (c) 2019-2025 Natalia Portillo.</span></div>
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<div class="line"><a id="l00004" name="l00004"></a><span class="lineno"> 4</span><span class="comment"> * Copyright (C) 2002 Andrew Tridgell <tridge@samba.org></span></div>
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<div class="line"><a id="l00005" name="l00005"></a><span class="lineno"> 5</span><span class="comment"> * Copyright (C) 2006 ManTech International Corporation</span></div>
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<div class="line"><a id="l00006" name="l00006"></a><span class="lineno"> 6</span><span class="comment"> * Copyright (C) 2013 Helmut Grohne <helmut@subdivi.de></span></div>
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<div class="line"><a id="l00007" name="l00007"></a><span class="lineno"> 7</span><span class="comment"> *</span></div>
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<div class="line"><a id="l00008" name="l00008"></a><span class="lineno"> 8</span><span class="comment"> * This library is free software; you can redistribute it and/or modify</span></div>
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<div class="line"><a id="l00009" name="l00009"></a><span class="lineno"> 9</span><span class="comment"> * it under the terms of the GNU Lesser General Public License as</span></div>
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||||
<div class="line"><a id="l00010" name="l00010"></a><span class="lineno"> 10</span><span class="comment"> * published by the Free Software Foundation; either version 2.1 of the</span></div>
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<div class="line"><a id="l00011" name="l00011"></a><span class="lineno"> 11</span><span class="comment"> * License, or (at your option) any later version.</span></div>
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<div class="line"><a id="l00012" name="l00012"></a><span class="lineno"> 12</span><span class="comment"> *</span></div>
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<div class="line"><a id="l00013" name="l00013"></a><span class="lineno"> 13</span><span class="comment"> * This library is distributed in the hope that it will be useful, but</span></div>
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<div class="line"><a id="l00014" name="l00014"></a><span class="lineno"> 14</span><span class="comment"> * WITHOUT ANY WARRANTY; without even the implied warranty of</span></div>
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<div class="line"><a id="l00015" name="l00015"></a><span class="lineno"> 15</span><span class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</span></div>
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||||
<div class="line"><a id="l00016" name="l00016"></a><span class="lineno"> 16</span><span class="comment"> * Lesser General Public License for more details.</span></div>
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||||
<div class="line"><a id="l00017" name="l00017"></a><span class="lineno"> 17</span><span class="comment"> *</span></div>
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<div class="line"><a id="l00018" name="l00018"></a><span class="lineno"> 18</span><span class="comment"> * You should have received a copy of the GNU Lesser General Public</span></div>
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<div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span><span class="comment"> * License along with this library; if not, see <http://www.gnu.org/licenses/>.</span></div>
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<div class="line"><a id="l00020" name="l00020"></a><span class="lineno"> 20</span><span class="comment"> */</span></div>
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<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span> </div>
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<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span><span class="preprocessor">#include <errno.h></span></div>
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<div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span><span class="preprocessor">#include <stdint.h></span></div>
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<div class="line"><a id="l00024" name="l00024"></a><span class="lineno"> 24</span><span class="preprocessor">#include <stdio.h></span></div>
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<div class="line"><a id="l00025" name="l00025"></a><span class="lineno"> 25</span><span class="preprocessor">#include <stdlib.h></span></div>
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<div class="line"><a id="l00026" name="l00026"></a><span class="lineno"> 26</span><span class="preprocessor">#include <string.h></span></div>
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<div class="line"><a id="l00027" name="l00027"></a><span class="lineno"> 27</span> </div>
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<div class="line"><a id="l00028" name="l00028"></a><span class="lineno"> 28</span><span class="preprocessor">#include "<a class="code" href="aaruformat_8h.html">aaruformat.h</a>"</span></div>
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<div class="line"><a id="l00029" name="l00029"></a><span class="lineno"> 29</span> </div>
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<div class="line"><a id="l00030" name="l00030"></a><span class="lineno"> 30</span><span class="preprocessor">#include "<a class="code" href="spamsum_8h.html">spamsum.h</a>"</span></div>
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<div class="line"><a id="l00031" name="l00031"></a><span class="lineno"> 31</span> </div>
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<div class="foldopen" id="foldopen00032" data-start="{" data-end="};">
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<div class="line"><a id="l00032" name="l00032"></a><span class="lineno"><a class="line" href="spamsum_8c.html#a172df0ac676d5a0f2c93001809e53a41"> 32</a></span><span class="keyword">static</span> uint8_t <a class="code hl_variable" href="spamsum_8c.html#a172df0ac676d5a0f2c93001809e53a41">b64</a>[] = {0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4A, 0x4B, 0x4C, 0x4D, 0x4E, 0x4F, 0x50,</div>
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||||
<div class="line"><a id="l00033" name="l00033"></a><span class="lineno"> 33</span> 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5A, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66,</div>
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||||
<div class="line"><a id="l00034" name="l00034"></a><span class="lineno"> 34</span> 0x67, 0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, 0x6F, 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76,</div>
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||||
<div class="line"><a id="l00035" name="l00035"></a><span class="lineno"> 35</span> 0x77, 0x78, 0x79, 0x7A, 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x2B, 0x2F};</div>
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</div>
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<div class="line"><a id="l00036" name="l00036"></a><span class="lineno"> 36</span> </div>
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<div class="foldopen" id="foldopen00037" data-start="{" data-end="}">
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<div class="line"><a id="l00037" name="l00037"></a><span class="lineno"><a class="line" href="decls_8h.html#a793dac760aedda6414ba4014eb2ed0c7"> 37</a></span><a class="code hl_define" href="decls_8h.html#a9001412c35f3c92d3a9320d27b0d97f9">AARU_EXPORT</a> <a class="code hl_struct" href="structspamsum__ctx.html">spamsum_ctx</a> *<a class="code hl_define" href="decls_8h.html#a018e0da1c1f7e4f6187a982c0e40e056">AARU_CALL</a> <a class="code hl_function" href="spamsum_8c.html#a793dac760aedda6414ba4014eb2ed0c7">aaruf_spamsum_init</a>(<span class="keywordtype">void</span>)</div>
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<div class="line"><a id="l00038" name="l00038"></a><span class="lineno"> 38</span>{</div>
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<div class="line"><a id="l00039" name="l00039"></a><span class="lineno"> 39</span> <a class="code hl_struct" href="structspamsum__ctx.html">spamsum_ctx</a> *ctx = malloc(<span class="keyword">sizeof</span>(<a class="code hl_struct" href="structspamsum__ctx.html">spamsum_ctx</a>));</div>
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||||
<div class="line"><a id="l00040" name="l00040"></a><span class="lineno"> 40</span> <span class="keywordflow">if</span>(!ctx) <span class="keywordflow">return</span> NULL;</div>
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<div class="line"><a id="l00041" name="l00041"></a><span class="lineno"> 41</span> </div>
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<div class="line"><a id="l00042" name="l00042"></a><span class="lineno"> 42</span> memset(ctx, 0, <span class="keyword">sizeof</span>(<a class="code hl_struct" href="structspamsum__ctx.html">spamsum_ctx</a>));</div>
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<div class="line"><a id="l00043" name="l00043"></a><span class="lineno"> 43</span> </div>
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<div class="line"><a id="l00044" name="l00044"></a><span class="lineno"> 44</span> ctx-><a class="code hl_variable" href="structspamsum__ctx.html#a7ddd33313b728271d39a1277726608c8">bh_end</a> = 1;</div>
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<div class="line"><a id="l00045" name="l00045"></a><span class="lineno"> 45</span> ctx-><a class="code hl_variable" href="structspamsum__ctx.html#a6c06adcf0f7b1a38b8471198408e0bf0">bh</a>[0].<a class="code hl_variable" href="structblockhash__ctx.html#a72a2a4c2cadb39423f6448b49e7b6a4b">h</a> = <a class="code hl_define" href="spamsum_8h.html#adcd60db457233e4a407009f6d4ceea48">HASH_INIT</a>;</div>
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<div class="line"><a id="l00046" name="l00046"></a><span class="lineno"> 46</span> ctx-><a class="code hl_variable" href="structspamsum__ctx.html#a6c06adcf0f7b1a38b8471198408e0bf0">bh</a>[0].<a class="code hl_variable" href="structblockhash__ctx.html#ad8f6cb69f8b66b75f46a90568cb9650c">half_h</a> = <a class="code hl_define" href="spamsum_8h.html#adcd60db457233e4a407009f6d4ceea48">HASH_INIT</a>;</div>
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<div class="line"><a id="l00047" name="l00047"></a><span class="lineno"> 47</span> </div>
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<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"> 48</span> <span class="keywordflow">return</span> ctx;</div>
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<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span>}</div>
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</div>
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<div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span></div>
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<div class="foldopen" id="foldopen00059" data-start="{" data-end="}">
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<div class="line"><a id="l00059" name="l00059"></a><span class="lineno"><a class="line" href="decls_8h.html#a5a9767f3b860752b493aa7bee9d39a8d"> 59</a></span><a class="code hl_define" href="decls_8h.html#a9001412c35f3c92d3a9320d27b0d97f9">AARU_EXPORT</a> <span class="keywordtype">int</span> <a class="code hl_define" href="decls_8h.html#a018e0da1c1f7e4f6187a982c0e40e056">AARU_CALL</a> <a class="code hl_function" href="spamsum_8c.html#aefe8cc89b1c87185e7bb4f7b8d1f4c80">aaruf_spamsum_update</a>(<a class="code hl_struct" href="structspamsum__ctx.html">spamsum_ctx</a> *ctx, <span class="keyword">const</span> uint8_t *data, <span class="keyword">const</span> uint32_t len)</div>
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||||
<div class="line"><a id="l00060" name="l00060"></a><span class="lineno"> 60</span>{</div>
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<div class="line"><a id="l00061" name="l00061"></a><span class="lineno"> 61</span> <span class="keywordflow">if</span>(!ctx || !data) <span class="keywordflow">return</span> -1;</div>
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<div class="line"><a id="l00062" name="l00062"></a><span class="lineno"> 62</span> </div>
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<div class="line"><a id="l00063" name="l00063"></a><span class="lineno"> 63</span> <span class="keywordflow">for</span>(<span class="keywordtype">int</span> i = 0; i < len; i++) <a class="code hl_function" href="spamsum_8c.html#a680150d4b3df13261af758c504a1f848">fuzzy_engine_step</a>(ctx, data[i]);</div>
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<div class="line"><a id="l00064" name="l00064"></a><span class="lineno"> 64</span> </div>
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||||
<div class="line"><a id="l00065" name="l00065"></a><span class="lineno"> 65</span> ctx-><a class="code hl_variable" href="structspamsum__ctx.html#a8936ea7a028ee607420647aed0f968fe">total_size</a> += len;</div>
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||||
<div class="line"><a id="l00066" name="l00066"></a><span class="lineno"> 66</span> </div>
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<div class="line"><a id="l00067" name="l00067"></a><span class="lineno"> 67</span> <span class="keywordflow">return</span> 0;</div>
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<div class="line"><a id="l00068" name="l00068"></a><span class="lineno"> 68</span>}</div>
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</div>
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<div class="line"><a id="l00069" name="l00069"></a><span class="lineno"> 69</span></div>
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<div class="foldopen" id="foldopen00075" data-start="{" data-end="}">
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<div class="line"><a id="l00075" name="l00075"></a><span class="lineno"><a class="line" href="decls_8h.html#a6fe74704e44be7adfaa2ce676f3c3de4"> 75</a></span><a class="code hl_define" href="decls_8h.html#a9001412c35f3c92d3a9320d27b0d97f9">AARU_EXPORT</a> <span class="keywordtype">void</span> <a class="code hl_define" href="decls_8h.html#a018e0da1c1f7e4f6187a982c0e40e056">AARU_CALL</a> <a class="code hl_function" href="spamsum_8c.html#a6fe74704e44be7adfaa2ce676f3c3de4">aaruf_spamsum_free</a>(<a class="code hl_struct" href="structspamsum__ctx.html">spamsum_ctx</a> *ctx)</div>
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||||
<div class="line"><a id="l00076" name="l00076"></a><span class="lineno"> 76</span>{</div>
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<div class="line"><a id="l00077" name="l00077"></a><span class="lineno"> 77</span> <span class="keywordflow">if</span>(ctx) free(ctx);</div>
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<div class="line"><a id="l00078" name="l00078"></a><span class="lineno"> 78</span>}</div>
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</div>
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<div class="line"><a id="l00079" name="l00079"></a><span class="lineno"> 79</span> </div>
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<div class="line"><a id="l00080" name="l00080"></a><span class="lineno"><a class="line" href="spamsum_8c.html#a707b15790ae068604c385681b164b64d"> 80</a></span><span class="preprocessor">#define ROLL_SUM(ctx) ((ctx)->roll.h1 + (ctx)->roll.h2 + (ctx)->roll.h3)</span></div>
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<div class="line"><a id="l00081" name="l00081"></a><span class="lineno"><a class="line" href="spamsum_8c.html#a0e886062da69d341fbee947ba56cae96"> 81</a></span><span class="preprocessor">#define SUM_HASH(c, h) (((h) * HASH_PRIME) ^ (c));</span></div>
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<div class="line"><a id="l00082" name="l00082"></a><span class="lineno"><a class="line" href="spamsum_8c.html#a32e1f1b80d38adcc429fdd861289fe12"> 82</a></span><span class="preprocessor">#define SSDEEP_BS(index) (MIN_BLOCKSIZE << (index))</span></div>
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<div class="line"><a id="l00083" name="l00083"></a><span class="lineno"> 83</span> </div>
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<div class="foldopen" id="foldopen00084" data-start="{" data-end="}">
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<div class="line"><a id="l00084" name="l00084"></a><span class="lineno"><a class="line" href="decls_8h.html#a680150d4b3df13261af758c504a1f848"> 84</a></span><a class="code hl_define" href="decls_8h.html#a8a7eac34f7a0caaa0d4a57e9627ba173">AARU_LOCAL</a> <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code hl_function" href="spamsum_8c.html#a680150d4b3df13261af758c504a1f848">fuzzy_engine_step</a>(<a class="code hl_struct" href="structspamsum__ctx.html">spamsum_ctx</a> *ctx, uint8_t c)</div>
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<div class="line"><a id="l00085" name="l00085"></a><span class="lineno"> 85</span>{</div>
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<div class="line"><a id="l00086" name="l00086"></a><span class="lineno"> 86</span> uint32_t i = 0;</div>
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<div class="line"><a id="l00087" name="l00087"></a><span class="lineno"> 87</span> <span class="comment">/* At each character we update the rolling hash and the normal hashes.</span></div>
|
||||
<div class="line"><a id="l00088" name="l00088"></a><span class="lineno"> 88</span><span class="comment"> * When the rolling hash hits a reset value then we emit a normal hash</span></div>
|
||||
<div class="line"><a id="l00089" name="l00089"></a><span class="lineno"> 89</span><span class="comment"> * as a element of the signature and reset the normal hash. */</span></div>
|
||||
<div class="line"><a id="l00090" name="l00090"></a><span class="lineno"> 90</span> <a class="code hl_function" href="spamsum_8c.html#a9f287da4a58c0d3ab8f0243de5fe3f8d">roll_hash</a>(ctx, c);</div>
|
||||
<div class="line"><a id="l00091" name="l00091"></a><span class="lineno"> 91</span> <span class="keyword">const</span> uint64_t h = <a class="code hl_define" href="spamsum_8c.html#a707b15790ae068604c385681b164b64d">ROLL_SUM</a>(ctx);</div>
|
||||
<div class="line"><a id="l00092" name="l00092"></a><span class="lineno"> 92</span> </div>
|
||||
<div class="line"><a id="l00093" name="l00093"></a><span class="lineno"> 93</span> <span class="keywordflow">for</span>(i = ctx-><a class="code hl_variable" href="structspamsum__ctx.html#ac286a992cea333182165a4fa4a9ddc8f">bh_start</a>; i < ctx->bh_end; ++i)</div>
|
||||
<div class="line"><a id="l00094" name="l00094"></a><span class="lineno"> 94</span> {</div>
|
||||
<div class="line"><a id="l00095" name="l00095"></a><span class="lineno"> 95</span> ctx-><a class="code hl_variable" href="structspamsum__ctx.html#a6c06adcf0f7b1a38b8471198408e0bf0">bh</a>[i].<a class="code hl_variable" href="structblockhash__ctx.html#a72a2a4c2cadb39423f6448b49e7b6a4b">h</a> = <a class="code hl_define" href="spamsum_8c.html#a0e886062da69d341fbee947ba56cae96">SUM_HASH</a>(c, ctx-><a class="code hl_variable" href="structspamsum__ctx.html#a6c06adcf0f7b1a38b8471198408e0bf0">bh</a>[i].<a class="code hl_variable" href="structblockhash__ctx.html#a72a2a4c2cadb39423f6448b49e7b6a4b">h</a>);</div>
|
||||
<div class="line"><a id="l00096" name="l00096"></a><span class="lineno"> 96</span> ctx-><a class="code hl_variable" href="structspamsum__ctx.html#a6c06adcf0f7b1a38b8471198408e0bf0">bh</a>[i].<a class="code hl_variable" href="structblockhash__ctx.html#ad8f6cb69f8b66b75f46a90568cb9650c">half_h</a> = <a class="code hl_define" href="spamsum_8c.html#a0e886062da69d341fbee947ba56cae96">SUM_HASH</a>(c, ctx-><a class="code hl_variable" href="structspamsum__ctx.html#a6c06adcf0f7b1a38b8471198408e0bf0">bh</a>[i].<a class="code hl_variable" href="structblockhash__ctx.html#ad8f6cb69f8b66b75f46a90568cb9650c">half_h</a>);</div>
|
||||
<div class="line"><a id="l00097" name="l00097"></a><span class="lineno"> 97</span> }</div>
|
||||
<div class="line"><a id="l00098" name="l00098"></a><span class="lineno"> 98</span> </div>
|
||||
<div class="line"><a id="l00099" name="l00099"></a><span class="lineno"> 99</span> <span class="keywordflow">for</span>(i = ctx-><a class="code hl_variable" href="structspamsum__ctx.html#ac286a992cea333182165a4fa4a9ddc8f">bh_start</a>; i < ctx->bh_end; ++i)</div>
|
||||
<div class="line"><a id="l00100" name="l00100"></a><span class="lineno"> 100</span> {</div>
|
||||
<div class="line"><a id="l00101" name="l00101"></a><span class="lineno"> 101</span> <span class="comment">/* With growing blocksize almost no runs fail the next test. */</span></div>
|
||||
<div class="line"><a id="l00102" name="l00102"></a><span class="lineno"> 102</span> <span class="keywordflow">if</span>(h % <a class="code hl_define" href="spamsum_8c.html#a32e1f1b80d38adcc429fdd861289fe12">SSDEEP_BS</a>(i) != <a class="code hl_define" href="spamsum_8c.html#a32e1f1b80d38adcc429fdd861289fe12">SSDEEP_BS</a>(i) - 1)</div>
|
||||
<div class="line"><a id="l00103" name="l00103"></a><span class="lineno"> 103</span> <span class="comment">/* Once this condition is false for one bs, it is</span></div>
|
||||
<div class="line"><a id="l00104" name="l00104"></a><span class="lineno"> 104</span><span class="comment"> * automatically false for all further bs. I.e. if</span></div>
|
||||
<div class="line"><a id="l00105" name="l00105"></a><span class="lineno"> 105</span><span class="comment"> * h === -1 (mod 2*bs) then h === -1 (mod bs). */</span></div>
|
||||
<div class="line"><a id="l00106" name="l00106"></a><span class="lineno"> 106</span> <span class="keywordflow">break</span>;</div>
|
||||
<div class="line"><a id="l00107" name="l00107"></a><span class="lineno"> 107</span> </div>
|
||||
<div class="line"><a id="l00108" name="l00108"></a><span class="lineno"> 108</span> <span class="comment">/* We have hit a reset point. We now emit hashes which are</span></div>
|
||||
<div class="line"><a id="l00109" name="l00109"></a><span class="lineno"> 109</span><span class="comment"> * based on all characters in the piece of the message between</span></div>
|
||||
<div class="line"><a id="l00110" name="l00110"></a><span class="lineno"> 110</span><span class="comment"> * the last reset point and this one */</span></div>
|
||||
<div class="line"><a id="l00111" name="l00111"></a><span class="lineno"> 111</span> <span class="keywordflow">if</span>(0 == ctx-><a class="code hl_variable" href="structspamsum__ctx.html#a6c06adcf0f7b1a38b8471198408e0bf0">bh</a>[i].<a class="code hl_variable" href="structblockhash__ctx.html#a612e7c2489c269ab5824859d0574063c">d_len</a>) <a class="code hl_function" href="spamsum_8c.html#a24c6d35239a8d1fee6e93aa12bbd5bd6">fuzzy_try_fork_blockhash</a>(ctx);</div>
|
||||
<div class="line"><a id="l00112" name="l00112"></a><span class="lineno"> 112</span> </div>
|
||||
<div class="line"><a id="l00113" name="l00113"></a><span class="lineno"> 113</span> ctx-><a class="code hl_variable" href="structspamsum__ctx.html#a6c06adcf0f7b1a38b8471198408e0bf0">bh</a>[i].<a class="code hl_variable" href="structblockhash__ctx.html#ac280cbba87103eb2f44d524e4dd72728">digest</a>[ctx-><a class="code hl_variable" href="structspamsum__ctx.html#a6c06adcf0f7b1a38b8471198408e0bf0">bh</a>[i].<a class="code hl_variable" href="structblockhash__ctx.html#a612e7c2489c269ab5824859d0574063c">d_len</a>] = <a class="code hl_variable" href="spamsum_8c.html#a172df0ac676d5a0f2c93001809e53a41">b64</a>[ctx-><a class="code hl_variable" href="structspamsum__ctx.html#a6c06adcf0f7b1a38b8471198408e0bf0">bh</a>[i].<a class="code hl_variable" href="structblockhash__ctx.html#a72a2a4c2cadb39423f6448b49e7b6a4b">h</a> % 64];</div>
|
||||
<div class="line"><a id="l00114" name="l00114"></a><span class="lineno"> 114</span> ctx-><a class="code hl_variable" href="structspamsum__ctx.html#a6c06adcf0f7b1a38b8471198408e0bf0">bh</a>[i].<a class="code hl_variable" href="structblockhash__ctx.html#a9c466e69831790bb5420deb8b9be093a">half_digest</a> = <a class="code hl_variable" href="spamsum_8c.html#a172df0ac676d5a0f2c93001809e53a41">b64</a>[ctx-><a class="code hl_variable" href="structspamsum__ctx.html#a6c06adcf0f7b1a38b8471198408e0bf0">bh</a>[i].<a class="code hl_variable" href="structblockhash__ctx.html#ad8f6cb69f8b66b75f46a90568cb9650c">half_h</a> % 64];</div>
|
||||
<div class="line"><a id="l00115" name="l00115"></a><span class="lineno"> 115</span> </div>
|
||||
<div class="line"><a id="l00116" name="l00116"></a><span class="lineno"> 116</span> <span class="keywordflow">if</span>(ctx-><a class="code hl_variable" href="structspamsum__ctx.html#a6c06adcf0f7b1a38b8471198408e0bf0">bh</a>[i].<a class="code hl_variable" href="structblockhash__ctx.html#a612e7c2489c269ab5824859d0574063c">d_len</a> < <a class="code hl_define" href="spamsum_8h.html#a137a76507c72a195455009b62e28c671">SPAMSUM_LENGTH</a> - 1)</div>
|
||||
<div class="line"><a id="l00117" name="l00117"></a><span class="lineno"> 117</span> {</div>
|
||||
<div class="line"><a id="l00118" name="l00118"></a><span class="lineno"> 118</span> <span class="comment">/* We can have a problem with the tail overflowing. The</span></div>
|
||||
<div class="line"><a id="l00119" name="l00119"></a><span class="lineno"> 119</span><span class="comment"> * easiest way to cope with this is to only reset the</span></div>
|
||||
<div class="line"><a id="l00120" name="l00120"></a><span class="lineno"> 120</span><span class="comment"> * normal hash if we have room for more characters in</span></div>
|
||||
<div class="line"><a id="l00121" name="l00121"></a><span class="lineno"> 121</span><span class="comment"> * our signature. This has the effect of combining the</span></div>
|
||||
<div class="line"><a id="l00122" name="l00122"></a><span class="lineno"> 122</span><span class="comment"> * last few pieces of the message into a single piece</span></div>
|
||||
<div class="line"><a id="l00123" name="l00123"></a><span class="lineno"> 123</span><span class="comment"> * */</span></div>
|
||||
<div class="line"><a id="l00124" name="l00124"></a><span class="lineno"> 124</span> ctx-><a class="code hl_variable" href="structspamsum__ctx.html#a6c06adcf0f7b1a38b8471198408e0bf0">bh</a>[i].<a class="code hl_variable" href="structblockhash__ctx.html#ac280cbba87103eb2f44d524e4dd72728">digest</a>[++ctx-><a class="code hl_variable" href="structspamsum__ctx.html#a6c06adcf0f7b1a38b8471198408e0bf0">bh</a>[i].<a class="code hl_variable" href="structblockhash__ctx.html#a612e7c2489c269ab5824859d0574063c">d_len</a>] = 0;</div>
|
||||
<div class="line"><a id="l00125" name="l00125"></a><span class="lineno"> 125</span> ctx-><a class="code hl_variable" href="structspamsum__ctx.html#a6c06adcf0f7b1a38b8471198408e0bf0">bh</a>[i].<a class="code hl_variable" href="structblockhash__ctx.html#a72a2a4c2cadb39423f6448b49e7b6a4b">h</a> = <a class="code hl_define" href="spamsum_8h.html#adcd60db457233e4a407009f6d4ceea48">HASH_INIT</a>;</div>
|
||||
<div class="line"><a id="l00126" name="l00126"></a><span class="lineno"> 126</span> </div>
|
||||
<div class="line"><a id="l00127" name="l00127"></a><span class="lineno"> 127</span> <span class="keywordflow">if</span>(ctx-><a class="code hl_variable" href="structspamsum__ctx.html#a6c06adcf0f7b1a38b8471198408e0bf0">bh</a>[i].<a class="code hl_variable" href="structblockhash__ctx.html#a612e7c2489c269ab5824859d0574063c">d_len</a> >= <a class="code hl_define" href="spamsum_8h.html#a137a76507c72a195455009b62e28c671">SPAMSUM_LENGTH</a> / 2) <span class="keywordflow">continue</span>;</div>
|
||||
<div class="line"><a id="l00128" name="l00128"></a><span class="lineno"> 128</span> </div>
|
||||
<div class="line"><a id="l00129" name="l00129"></a><span class="lineno"> 129</span> ctx-><a class="code hl_variable" href="structspamsum__ctx.html#a6c06adcf0f7b1a38b8471198408e0bf0">bh</a>[i].<a class="code hl_variable" href="structblockhash__ctx.html#ad8f6cb69f8b66b75f46a90568cb9650c">half_h</a> = <a class="code hl_define" href="spamsum_8h.html#adcd60db457233e4a407009f6d4ceea48">HASH_INIT</a>;</div>
|
||||
<div class="line"><a id="l00130" name="l00130"></a><span class="lineno"> 130</span> ctx-><a class="code hl_variable" href="structspamsum__ctx.html#a6c06adcf0f7b1a38b8471198408e0bf0">bh</a>[i].<a class="code hl_variable" href="structblockhash__ctx.html#a9c466e69831790bb5420deb8b9be093a">half_digest</a> = 0;</div>
|
||||
<div class="line"><a id="l00131" name="l00131"></a><span class="lineno"> 131</span> }</div>
|
||||
<div class="line"><a id="l00132" name="l00132"></a><span class="lineno"> 132</span> <span class="keywordflow">else</span></div>
|
||||
<div class="line"><a id="l00133" name="l00133"></a><span class="lineno"> 133</span> <a class="code hl_function" href="spamsum_8c.html#a906ad6bd1809bf999874c848af7c648b">fuzzy_try_reduce_blockhash</a>(ctx);</div>
|
||||
<div class="line"><a id="l00134" name="l00134"></a><span class="lineno"> 134</span> }</div>
|
||||
<div class="line"><a id="l00135" name="l00135"></a><span class="lineno"> 135</span>}</div>
|
||||
</div>
|
||||
<div class="line"><a id="l00136" name="l00136"></a><span class="lineno"> 136</span> </div>
|
||||
<div class="foldopen" id="foldopen00137" data-start="{" data-end="}">
|
||||
<div class="line"><a id="l00137" name="l00137"></a><span class="lineno"><a class="line" href="decls_8h.html#a9f287da4a58c0d3ab8f0243de5fe3f8d"> 137</a></span><a class="code hl_define" href="decls_8h.html#a8a7eac34f7a0caaa0d4a57e9627ba173">AARU_LOCAL</a> <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code hl_function" href="spamsum_8c.html#a9f287da4a58c0d3ab8f0243de5fe3f8d">roll_hash</a>(<a class="code hl_struct" href="structspamsum__ctx.html">spamsum_ctx</a> *ctx, uint8_t c)</div>
|
||||
<div class="line"><a id="l00138" name="l00138"></a><span class="lineno"> 138</span>{</div>
|
||||
<div class="line"><a id="l00139" name="l00139"></a><span class="lineno"> 139</span> ctx-><a class="code hl_variable" href="structspamsum__ctx.html#a77be799510adf0ac63ec01584dcbb05a">roll</a>.<a class="code hl_variable" href="structroll__state.html#a154924f3e18b1d8573a9fafa9b9c0ede">h2</a> -= ctx-><a class="code hl_variable" href="structspamsum__ctx.html#a77be799510adf0ac63ec01584dcbb05a">roll</a>.<a class="code hl_variable" href="structroll__state.html#a54693b882416c9bd195bf1f17bfdac86">h1</a>;</div>
|
||||
<div class="line"><a id="l00140" name="l00140"></a><span class="lineno"> 140</span> ctx-><a class="code hl_variable" href="structspamsum__ctx.html#a77be799510adf0ac63ec01584dcbb05a">roll</a>.<a class="code hl_variable" href="structroll__state.html#a154924f3e18b1d8573a9fafa9b9c0ede">h2</a> += <a class="code hl_define" href="spamsum_8h.html#a6e3701d1edb7f42493d091d7202fa299">ROLLING_WINDOW</a> * c;</div>
|
||||
<div class="line"><a id="l00141" name="l00141"></a><span class="lineno"> 141</span> </div>
|
||||
<div class="line"><a id="l00142" name="l00142"></a><span class="lineno"> 142</span> ctx-><a class="code hl_variable" href="structspamsum__ctx.html#a77be799510adf0ac63ec01584dcbb05a">roll</a>.<a class="code hl_variable" href="structroll__state.html#a54693b882416c9bd195bf1f17bfdac86">h1</a> += c;</div>
|
||||
<div class="line"><a id="l00143" name="l00143"></a><span class="lineno"> 143</span> ctx-><a class="code hl_variable" href="structspamsum__ctx.html#a77be799510adf0ac63ec01584dcbb05a">roll</a>.<a class="code hl_variable" href="structroll__state.html#a54693b882416c9bd195bf1f17bfdac86">h1</a> -= ctx-><a class="code hl_variable" href="structspamsum__ctx.html#a77be799510adf0ac63ec01584dcbb05a">roll</a>.<a class="code hl_variable" href="structroll__state.html#af671026012e05658f8e1247b89e26ff8">window</a>[ctx-><a class="code hl_variable" href="structspamsum__ctx.html#a77be799510adf0ac63ec01584dcbb05a">roll</a>.<a class="code hl_variable" href="structroll__state.html#a2ae7c7dc4fcd20c1911ae63ed3e166b8">n</a> % <a class="code hl_define" href="spamsum_8h.html#a6e3701d1edb7f42493d091d7202fa299">ROLLING_WINDOW</a>];</div>
|
||||
<div class="line"><a id="l00144" name="l00144"></a><span class="lineno"> 144</span> </div>
|
||||
<div class="line"><a id="l00145" name="l00145"></a><span class="lineno"> 145</span> ctx-><a class="code hl_variable" href="structspamsum__ctx.html#a77be799510adf0ac63ec01584dcbb05a">roll</a>.<a class="code hl_variable" href="structroll__state.html#af671026012e05658f8e1247b89e26ff8">window</a>[ctx-><a class="code hl_variable" href="structspamsum__ctx.html#a77be799510adf0ac63ec01584dcbb05a">roll</a>.<a class="code hl_variable" href="structroll__state.html#a2ae7c7dc4fcd20c1911ae63ed3e166b8">n</a> % <a class="code hl_define" href="spamsum_8h.html#a6e3701d1edb7f42493d091d7202fa299">ROLLING_WINDOW</a>] = c;</div>
|
||||
<div class="line"><a id="l00146" name="l00146"></a><span class="lineno"> 146</span> ctx-><a class="code hl_variable" href="structspamsum__ctx.html#a77be799510adf0ac63ec01584dcbb05a">roll</a>.<a class="code hl_variable" href="structroll__state.html#a2ae7c7dc4fcd20c1911ae63ed3e166b8">n</a>++;</div>
|
||||
<div class="line"><a id="l00147" name="l00147"></a><span class="lineno"> 147</span> </div>
|
||||
<div class="line"><a id="l00148" name="l00148"></a><span class="lineno"> 148</span> <span class="comment">/* The original spamsum AND'ed this value with 0xFFFFFFFF which</span></div>
|
||||
<div class="line"><a id="l00149" name="l00149"></a><span class="lineno"> 149</span><span class="comment"> * in theory should have no effect. This AND has been removed</span></div>
|
||||
<div class="line"><a id="l00150" name="l00150"></a><span class="lineno"> 150</span><span class="comment"> * for performance (jk) */</span></div>
|
||||
<div class="line"><a id="l00151" name="l00151"></a><span class="lineno"> 151</span> ctx-><a class="code hl_variable" href="structspamsum__ctx.html#a77be799510adf0ac63ec01584dcbb05a">roll</a>.<a class="code hl_variable" href="structroll__state.html#a874ffab29cc5570b58ea258e5a267efa">h3</a> <<= 5;</div>
|
||||
<div class="line"><a id="l00152" name="l00152"></a><span class="lineno"> 152</span> ctx-><a class="code hl_variable" href="structspamsum__ctx.html#a77be799510adf0ac63ec01584dcbb05a">roll</a>.<a class="code hl_variable" href="structroll__state.html#a874ffab29cc5570b58ea258e5a267efa">h3</a> ^= c;</div>
|
||||
<div class="line"><a id="l00153" name="l00153"></a><span class="lineno"> 153</span>}</div>
|
||||
</div>
|
||||
<div class="line"><a id="l00154" name="l00154"></a><span class="lineno"> 154</span> </div>
|
||||
<div class="foldopen" id="foldopen00155" data-start="{" data-end="}">
|
||||
<div class="line"><a id="l00155" name="l00155"></a><span class="lineno"><a class="line" href="decls_8h.html#a906ad6bd1809bf999874c848af7c648b"> 155</a></span><a class="code hl_define" href="decls_8h.html#a8a7eac34f7a0caaa0d4a57e9627ba173">AARU_LOCAL</a> <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code hl_function" href="spamsum_8c.html#a906ad6bd1809bf999874c848af7c648b">fuzzy_try_reduce_blockhash</a>(<a class="code hl_struct" href="structspamsum__ctx.html">spamsum_ctx</a> *ctx)</div>
|
||||
<div class="line"><a id="l00156" name="l00156"></a><span class="lineno"> 156</span>{</div>
|
||||
<div class="line"><a id="l00157" name="l00157"></a><span class="lineno"> 157</span> <span class="comment">// assert(ctx->bh_start < ctx->bh_end);</span></div>
|
||||
<div class="line"><a id="l00158" name="l00158"></a><span class="lineno"> 158</span> </div>
|
||||
<div class="line"><a id="l00159" name="l00159"></a><span class="lineno"> 159</span> <span class="keywordflow">if</span>(ctx-><a class="code hl_variable" href="structspamsum__ctx.html#a7ddd33313b728271d39a1277726608c8">bh_end</a> - ctx-><a class="code hl_variable" href="structspamsum__ctx.html#ac286a992cea333182165a4fa4a9ddc8f">bh_start</a> < 2) <span class="comment">/* Need at least two working hashes. */</span></div>
|
||||
<div class="line"><a id="l00160" name="l00160"></a><span class="lineno"> 160</span> <span class="keywordflow">return</span>;</div>
|
||||
<div class="line"><a id="l00161" name="l00161"></a><span class="lineno"> 161</span> </div>
|
||||
<div class="line"><a id="l00162" name="l00162"></a><span class="lineno"> 162</span> <span class="keywordflow">if</span>((uint64_t)<a class="code hl_define" href="spamsum_8c.html#a32e1f1b80d38adcc429fdd861289fe12">SSDEEP_BS</a>(ctx-><a class="code hl_variable" href="structspamsum__ctx.html#ac286a992cea333182165a4fa4a9ddc8f">bh_start</a>) * <a class="code hl_define" href="spamsum_8h.html#a137a76507c72a195455009b62e28c671">SPAMSUM_LENGTH</a> >= ctx-><a class="code hl_variable" href="structspamsum__ctx.html#a8936ea7a028ee607420647aed0f968fe">total_size</a>)</div>
|
||||
<div class="line"><a id="l00163" name="l00163"></a><span class="lineno"> 163</span> <span class="comment">/* Initial blocksize estimate would select this or a smaller</span></div>
|
||||
<div class="line"><a id="l00164" name="l00164"></a><span class="lineno"> 164</span><span class="comment"> * blocksize. */</span></div>
|
||||
<div class="line"><a id="l00165" name="l00165"></a><span class="lineno"> 165</span> <span class="keywordflow">return</span>;</div>
|
||||
<div class="line"><a id="l00166" name="l00166"></a><span class="lineno"> 166</span> </div>
|
||||
<div class="line"><a id="l00167" name="l00167"></a><span class="lineno"> 167</span> <span class="keywordflow">if</span>(ctx-><a class="code hl_variable" href="structspamsum__ctx.html#a6c06adcf0f7b1a38b8471198408e0bf0">bh</a>[ctx-><a class="code hl_variable" href="structspamsum__ctx.html#ac286a992cea333182165a4fa4a9ddc8f">bh_start</a> + 1].<a class="code hl_variable" href="structblockhash__ctx.html#a612e7c2489c269ab5824859d0574063c">d_len</a> < <a class="code hl_define" href="spamsum_8h.html#a137a76507c72a195455009b62e28c671">SPAMSUM_LENGTH</a> / 2) <span class="comment">/* Estimate adjustment would select this blocksize. */</span></div>
|
||||
<div class="line"><a id="l00168" name="l00168"></a><span class="lineno"> 168</span> <span class="keywordflow">return</span>;</div>
|
||||
<div class="line"><a id="l00169" name="l00169"></a><span class="lineno"> 169</span> </div>
|
||||
<div class="line"><a id="l00170" name="l00170"></a><span class="lineno"> 170</span> <span class="comment">/* At this point we are clearly no longer interested in the</span></div>
|
||||
<div class="line"><a id="l00171" name="l00171"></a><span class="lineno"> 171</span><span class="comment"> * start_blocksize. Get rid of it. */</span></div>
|
||||
<div class="line"><a id="l00172" name="l00172"></a><span class="lineno"> 172</span> ++ctx-><a class="code hl_variable" href="structspamsum__ctx.html#ac286a992cea333182165a4fa4a9ddc8f">bh_start</a>;</div>
|
||||
<div class="line"><a id="l00173" name="l00173"></a><span class="lineno"> 173</span>}</div>
|
||||
</div>
|
||||
<div class="line"><a id="l00174" name="l00174"></a><span class="lineno"> 174</span> </div>
|
||||
<div class="foldopen" id="foldopen00175" data-start="{" data-end="}">
|
||||
<div class="line"><a id="l00175" name="l00175"></a><span class="lineno"><a class="line" href="decls_8h.html#a24c6d35239a8d1fee6e93aa12bbd5bd6"> 175</a></span><a class="code hl_define" href="decls_8h.html#a8a7eac34f7a0caaa0d4a57e9627ba173">AARU_LOCAL</a> <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code hl_function" href="spamsum_8c.html#a24c6d35239a8d1fee6e93aa12bbd5bd6">fuzzy_try_fork_blockhash</a>(<a class="code hl_struct" href="structspamsum__ctx.html">spamsum_ctx</a> *ctx)</div>
|
||||
<div class="line"><a id="l00176" name="l00176"></a><span class="lineno"> 176</span>{</div>
|
||||
<div class="line"><a id="l00177" name="l00177"></a><span class="lineno"> 177</span> <span class="keywordflow">if</span>(ctx-><a class="code hl_variable" href="structspamsum__ctx.html#a7ddd33313b728271d39a1277726608c8">bh_end</a> >= <a class="code hl_define" href="spamsum_8h.html#ab05c87bf87434740e1400b8f7fc9cbaa">NUM_BLOCKHASHES</a>) <span class="keywordflow">return</span>;</div>
|
||||
<div class="line"><a id="l00178" name="l00178"></a><span class="lineno"> 178</span> </div>
|
||||
<div class="line"><a id="l00179" name="l00179"></a><span class="lineno"> 179</span> <span class="comment">// assert(ctx->bh_end != 0);</span></div>
|
||||
<div class="line"><a id="l00180" name="l00180"></a><span class="lineno"> 180</span> </div>
|
||||
<div class="line"><a id="l00181" name="l00181"></a><span class="lineno"> 181</span> <span class="keyword">const</span> uint32_t obh = ctx-><a class="code hl_variable" href="structspamsum__ctx.html#a7ddd33313b728271d39a1277726608c8">bh_end</a> - 1;</div>
|
||||
<div class="line"><a id="l00182" name="l00182"></a><span class="lineno"> 182</span> <span class="keyword">const</span> uint32_t nbh = ctx-><a class="code hl_variable" href="structspamsum__ctx.html#a7ddd33313b728271d39a1277726608c8">bh_end</a>;</div>
|
||||
<div class="line"><a id="l00183" name="l00183"></a><span class="lineno"> 183</span> ctx-><a class="code hl_variable" href="structspamsum__ctx.html#a6c06adcf0f7b1a38b8471198408e0bf0">bh</a>[nbh].<a class="code hl_variable" href="structblockhash__ctx.html#a72a2a4c2cadb39423f6448b49e7b6a4b">h</a> = ctx-><a class="code hl_variable" href="structspamsum__ctx.html#a6c06adcf0f7b1a38b8471198408e0bf0">bh</a>[obh].<a class="code hl_variable" href="structblockhash__ctx.html#a72a2a4c2cadb39423f6448b49e7b6a4b">h</a>;</div>
|
||||
<div class="line"><a id="l00184" name="l00184"></a><span class="lineno"> 184</span> ctx-><a class="code hl_variable" href="structspamsum__ctx.html#a6c06adcf0f7b1a38b8471198408e0bf0">bh</a>[nbh].<a class="code hl_variable" href="structblockhash__ctx.html#ad8f6cb69f8b66b75f46a90568cb9650c">half_h</a> = ctx-><a class="code hl_variable" href="structspamsum__ctx.html#a6c06adcf0f7b1a38b8471198408e0bf0">bh</a>[obh].<a class="code hl_variable" href="structblockhash__ctx.html#ad8f6cb69f8b66b75f46a90568cb9650c">half_h</a>;</div>
|
||||
<div class="line"><a id="l00185" name="l00185"></a><span class="lineno"> 185</span> ctx-><a class="code hl_variable" href="structspamsum__ctx.html#a6c06adcf0f7b1a38b8471198408e0bf0">bh</a>[nbh].<a class="code hl_variable" href="structblockhash__ctx.html#ac280cbba87103eb2f44d524e4dd72728">digest</a>[0] = 0;</div>
|
||||
<div class="line"><a id="l00186" name="l00186"></a><span class="lineno"> 186</span> ctx-><a class="code hl_variable" href="structspamsum__ctx.html#a6c06adcf0f7b1a38b8471198408e0bf0">bh</a>[nbh].<a class="code hl_variable" href="structblockhash__ctx.html#a9c466e69831790bb5420deb8b9be093a">half_digest</a> = 0;</div>
|
||||
<div class="line"><a id="l00187" name="l00187"></a><span class="lineno"> 187</span> ctx-><a class="code hl_variable" href="structspamsum__ctx.html#a6c06adcf0f7b1a38b8471198408e0bf0">bh</a>[nbh].<a class="code hl_variable" href="structblockhash__ctx.html#a612e7c2489c269ab5824859d0574063c">d_len</a> = 0;</div>
|
||||
<div class="line"><a id="l00188" name="l00188"></a><span class="lineno"> 188</span> ++ctx-><a class="code hl_variable" href="structspamsum__ctx.html#a7ddd33313b728271d39a1277726608c8">bh_end</a>;</div>
|
||||
<div class="line"><a id="l00189" name="l00189"></a><span class="lineno"> 189</span>}</div>
|
||||
</div>
|
||||
<div class="line"><a id="l00190" name="l00190"></a><span class="lineno"> 190</span> </div>
|
||||
<div class="foldopen" id="foldopen00191" data-start="{" data-end="}">
|
||||
<div class="line"><a id="l00191" name="l00191"></a><span class="lineno"><a class="line" href="decls_8h.html#ab1f4894af1962e933767248c4fb0e2e8"> 191</a></span><a class="code hl_define" href="decls_8h.html#a9001412c35f3c92d3a9320d27b0d97f9">AARU_EXPORT</a> <span class="keywordtype">int</span> <a class="code hl_define" href="decls_8h.html#a018e0da1c1f7e4f6187a982c0e40e056">AARU_CALL</a> <a class="code hl_function" href="spamsum_8c.html#ab1f4894af1962e933767248c4fb0e2e8">aaruf_spamsum_final</a>(<a class="code hl_struct" href="structspamsum__ctx.html">spamsum_ctx</a> *ctx, uint8_t *result)</div>
|
||||
<div class="line"><a id="l00192" name="l00192"></a><span class="lineno"> 192</span>{</div>
|
||||
<div class="line"><a id="l00193" name="l00193"></a><span class="lineno"> 193</span> uint32_t bi = ctx-><a class="code hl_variable" href="structspamsum__ctx.html#ac286a992cea333182165a4fa4a9ddc8f">bh_start</a>;</div>
|
||||
<div class="line"><a id="l00194" name="l00194"></a><span class="lineno"> 194</span> uint32_t h = <a class="code hl_define" href="spamsum_8c.html#a707b15790ae068604c385681b164b64d">ROLL_SUM</a>(ctx);</div>
|
||||
<div class="line"><a id="l00195" name="l00195"></a><span class="lineno"> 195</span> <span class="keywordtype">int</span> remain = <a class="code hl_define" href="spamsum_8h.html#a2309f23e98c4c0370f32e3e3cb09afa5">FUZZY_MAX_RESULT</a> - 1; <span class="comment">/* Exclude terminating '\0'. */</span></div>
|
||||
<div class="line"><a id="l00196" name="l00196"></a><span class="lineno"> 196</span> </div>
|
||||
<div class="line"><a id="l00197" name="l00197"></a><span class="lineno"> 197</span> <span class="keywordflow">if</span>(!result) <span class="keywordflow">return</span> -1;</div>
|
||||
<div class="line"><a id="l00198" name="l00198"></a><span class="lineno"> 198</span> </div>
|
||||
<div class="line"><a id="l00199" name="l00199"></a><span class="lineno"> 199</span> <span class="comment">/* Verify that our elimination was not overeager. */</span></div>
|
||||
<div class="line"><a id="l00200" name="l00200"></a><span class="lineno"> 200</span> <span class="comment">// assert(bi == 0 || (uint64_t)SSDEEP_BS(bi) / 2 * SPAMSUM_LENGTH < ctx->total_size);</span></div>
|
||||
<div class="line"><a id="l00201" name="l00201"></a><span class="lineno"> 201</span> </div>
|
||||
<div class="line"><a id="l00202" name="l00202"></a><span class="lineno"> 202</span> <span class="comment">/* Initial blocksize guess. */</span></div>
|
||||
<div class="line"><a id="l00203" name="l00203"></a><span class="lineno"> 203</span> <span class="keywordflow">while</span>((uint64_t)<a class="code hl_define" href="spamsum_8c.html#a32e1f1b80d38adcc429fdd861289fe12">SSDEEP_BS</a>(bi) * <a class="code hl_define" href="spamsum_8h.html#a137a76507c72a195455009b62e28c671">SPAMSUM_LENGTH < ctx-></a>total_size)</div>
|
||||
<div class="line"><a id="l00204" name="l00204"></a><span class="lineno"> 204</span> {</div>
|
||||
<div class="line"><a id="l00205" name="l00205"></a><span class="lineno"> 205</span> ++bi;</div>
|
||||
<div class="line"><a id="l00206" name="l00206"></a><span class="lineno"> 206</span> </div>
|
||||
<div class="line"><a id="l00207" name="l00207"></a><span class="lineno"> 207</span> <span class="keywordflow">if</span>(bi >= <a class="code hl_define" href="spamsum_8h.html#ab05c87bf87434740e1400b8f7fc9cbaa">NUM_BLOCKHASHES</a>)</div>
|
||||
<div class="line"><a id="l00208" name="l00208"></a><span class="lineno"> 208</span> {</div>
|
||||
<div class="line"><a id="l00209" name="l00209"></a><span class="lineno"> 209</span> errno = EOVERFLOW;</div>
|
||||
<div class="line"><a id="l00210" name="l00210"></a><span class="lineno"> 210</span> <span class="keywordflow">return</span> -1;</div>
|
||||
<div class="line"><a id="l00211" name="l00211"></a><span class="lineno"> 211</span> }</div>
|
||||
<div class="line"><a id="l00212" name="l00212"></a><span class="lineno"> 212</span> }</div>
|
||||
<div class="line"><a id="l00213" name="l00213"></a><span class="lineno"> 213</span> </div>
|
||||
<div class="line"><a id="l00214" name="l00214"></a><span class="lineno"> 214</span> <span class="comment">/* Adapt blocksize guess to actual digest length. */</span></div>
|
||||
<div class="line"><a id="l00215" name="l00215"></a><span class="lineno"> 215</span> <span class="keywordflow">while</span>(bi >= ctx-><a class="code hl_variable" href="structspamsum__ctx.html#a7ddd33313b728271d39a1277726608c8">bh_end</a>) --bi;</div>
|
||||
<div class="line"><a id="l00216" name="l00216"></a><span class="lineno"> 216</span> </div>
|
||||
<div class="line"><a id="l00217" name="l00217"></a><span class="lineno"> 217</span> <span class="keywordflow">while</span>(bi > ctx-><a class="code hl_variable" href="structspamsum__ctx.html#ac286a992cea333182165a4fa4a9ddc8f">bh_start</a> && ctx-><a class="code hl_variable" href="structspamsum__ctx.html#a6c06adcf0f7b1a38b8471198408e0bf0">bh</a>[bi].<a class="code hl_variable" href="structblockhash__ctx.html#a612e7c2489c269ab5824859d0574063c">d_len</a> < <a class="code hl_define" href="spamsum_8h.html#a137a76507c72a195455009b62e28c671">SPAMSUM_LENGTH</a> / 2) --bi;</div>
|
||||
<div class="line"><a id="l00218" name="l00218"></a><span class="lineno"> 218</span> </div>
|
||||
<div class="line"><a id="l00219" name="l00219"></a><span class="lineno"> 219</span> <span class="comment">// assert(!(bi > 0 && ctx->bh[bi].d_len < SPAMSUM_LENGTH / 2));</span></div>
|
||||
<div class="line"><a id="l00220" name="l00220"></a><span class="lineno"> 220</span> </div>
|
||||
<div class="line"><a id="l00221" name="l00221"></a><span class="lineno"> 221</span> <span class="keywordtype">int</span> i = snprintf((<span class="keywordtype">char</span> *)result, (<span class="keywordtype">size_t</span>)remain, <span class="stringliteral">"%lu:"</span>, (<span class="keywordtype">unsigned</span> <span class="keywordtype">long</span>)<a class="code hl_define" href="spamsum_8c.html#a32e1f1b80d38adcc429fdd861289fe12">SSDEEP_BS</a>(bi));</div>
|
||||
<div class="line"><a id="l00222" name="l00222"></a><span class="lineno"> 222</span> </div>
|
||||
<div class="line"><a id="l00223" name="l00223"></a><span class="lineno"> 223</span> <span class="keywordflow">if</span>(i <= 0) <span class="comment">/* Maybe snprintf has set errno here? */</span></div>
|
||||
<div class="line"><a id="l00224" name="l00224"></a><span class="lineno"> 224</span> <span class="keywordflow">return</span> -1;</div>
|
||||
<div class="line"><a id="l00225" name="l00225"></a><span class="lineno"> 225</span> </div>
|
||||
<div class="line"><a id="l00226" name="l00226"></a><span class="lineno"> 226</span> <span class="comment">// assert(i < remain);</span></div>
|
||||
<div class="line"><a id="l00227" name="l00227"></a><span class="lineno"> 227</span> </div>
|
||||
<div class="line"><a id="l00228" name="l00228"></a><span class="lineno"> 228</span> remain -= i;</div>
|
||||
<div class="line"><a id="l00229" name="l00229"></a><span class="lineno"> 229</span> result += i;</div>
|
||||
<div class="line"><a id="l00230" name="l00230"></a><span class="lineno"> 230</span> </div>
|
||||
<div class="line"><a id="l00231" name="l00231"></a><span class="lineno"> 231</span> i = (int)ctx-><a class="code hl_variable" href="structspamsum__ctx.html#a6c06adcf0f7b1a38b8471198408e0bf0">bh</a>[bi].<a class="code hl_variable" href="structblockhash__ctx.html#a612e7c2489c269ab5824859d0574063c">d_len</a>;</div>
|
||||
<div class="line"><a id="l00232" name="l00232"></a><span class="lineno"> 232</span> </div>
|
||||
<div class="line"><a id="l00233" name="l00233"></a><span class="lineno"> 233</span> <span class="comment">// assert(i <= remain);</span></div>
|
||||
<div class="line"><a id="l00234" name="l00234"></a><span class="lineno"> 234</span> </div>
|
||||
<div class="line"><a id="l00235" name="l00235"></a><span class="lineno"> 235</span> memcpy(result, ctx-><a class="code hl_variable" href="structspamsum__ctx.html#a6c06adcf0f7b1a38b8471198408e0bf0">bh</a>[bi].<a class="code hl_variable" href="structblockhash__ctx.html#ac280cbba87103eb2f44d524e4dd72728">digest</a>, (<span class="keywordtype">size_t</span>)i);</div>
|
||||
<div class="line"><a id="l00236" name="l00236"></a><span class="lineno"> 236</span> result += i;</div>
|
||||
<div class="line"><a id="l00237" name="l00237"></a><span class="lineno"> 237</span> remain -= i;</div>
|
||||
<div class="line"><a id="l00238" name="l00238"></a><span class="lineno"> 238</span> </div>
|
||||
<div class="line"><a id="l00239" name="l00239"></a><span class="lineno"> 239</span> <span class="keywordflow">if</span>(h != 0)</div>
|
||||
<div class="line"><a id="l00240" name="l00240"></a><span class="lineno"> 240</span> {</div>
|
||||
<div class="line"><a id="l00241" name="l00241"></a><span class="lineno"> 241</span> <span class="comment">// assert(remain > 0);</span></div>
|
||||
<div class="line"><a id="l00242" name="l00242"></a><span class="lineno"> 242</span> </div>
|
||||
<div class="line"><a id="l00243" name="l00243"></a><span class="lineno"> 243</span> *result = <a class="code hl_variable" href="spamsum_8c.html#a172df0ac676d5a0f2c93001809e53a41">b64</a>[ctx-><a class="code hl_variable" href="structspamsum__ctx.html#a6c06adcf0f7b1a38b8471198408e0bf0">bh</a>[bi].<a class="code hl_variable" href="structblockhash__ctx.html#a72a2a4c2cadb39423f6448b49e7b6a4b">h</a> % 64];</div>
|
||||
<div class="line"><a id="l00244" name="l00244"></a><span class="lineno"> 244</span> </div>
|
||||
<div class="line"><a id="l00245" name="l00245"></a><span class="lineno"> 245</span> <span class="keywordflow">if</span>(i < 3 || *result != result[-1] || *result != result[-2] || *result != result[-3])</div>
|
||||
<div class="line"><a id="l00246" name="l00246"></a><span class="lineno"> 246</span> {</div>
|
||||
<div class="line"><a id="l00247" name="l00247"></a><span class="lineno"> 247</span> ++result;</div>
|
||||
<div class="line"><a id="l00248" name="l00248"></a><span class="lineno"> 248</span> --remain;</div>
|
||||
<div class="line"><a id="l00249" name="l00249"></a><span class="lineno"> 249</span> }</div>
|
||||
<div class="line"><a id="l00250" name="l00250"></a><span class="lineno"> 250</span> }</div>
|
||||
<div class="line"><a id="l00251" name="l00251"></a><span class="lineno"> 251</span> <span class="keywordflow">else</span> <span class="keywordflow">if</span>(ctx-><a class="code hl_variable" href="structspamsum__ctx.html#a6c06adcf0f7b1a38b8471198408e0bf0">bh</a>[bi].<a class="code hl_variable" href="structblockhash__ctx.html#ac280cbba87103eb2f44d524e4dd72728">digest</a>[i] != 0)</div>
|
||||
<div class="line"><a id="l00252" name="l00252"></a><span class="lineno"> 252</span> {</div>
|
||||
<div class="line"><a id="l00253" name="l00253"></a><span class="lineno"> 253</span> <span class="comment">// assert(remain > 0);</span></div>
|
||||
<div class="line"><a id="l00254" name="l00254"></a><span class="lineno"> 254</span> </div>
|
||||
<div class="line"><a id="l00255" name="l00255"></a><span class="lineno"> 255</span> *result = ctx-><a class="code hl_variable" href="structspamsum__ctx.html#a6c06adcf0f7b1a38b8471198408e0bf0">bh</a>[bi].<a class="code hl_variable" href="structblockhash__ctx.html#ac280cbba87103eb2f44d524e4dd72728">digest</a>[i];</div>
|
||||
<div class="line"><a id="l00256" name="l00256"></a><span class="lineno"> 256</span> </div>
|
||||
<div class="line"><a id="l00257" name="l00257"></a><span class="lineno"> 257</span> <span class="keywordflow">if</span>(i < 3 || *result != result[-1] || *result != result[-2] || *result != result[-3])</div>
|
||||
<div class="line"><a id="l00258" name="l00258"></a><span class="lineno"> 258</span> {</div>
|
||||
<div class="line"><a id="l00259" name="l00259"></a><span class="lineno"> 259</span> ++result;</div>
|
||||
<div class="line"><a id="l00260" name="l00260"></a><span class="lineno"> 260</span> --remain;</div>
|
||||
<div class="line"><a id="l00261" name="l00261"></a><span class="lineno"> 261</span> }</div>
|
||||
<div class="line"><a id="l00262" name="l00262"></a><span class="lineno"> 262</span> }</div>
|
||||
<div class="line"><a id="l00263" name="l00263"></a><span class="lineno"> 263</span> </div>
|
||||
<div class="line"><a id="l00264" name="l00264"></a><span class="lineno"> 264</span> <span class="comment">// assert(remain > 0);</span></div>
|
||||
<div class="line"><a id="l00265" name="l00265"></a><span class="lineno"> 265</span> </div>
|
||||
<div class="line"><a id="l00266" name="l00266"></a><span class="lineno"> 266</span> *result++ = <span class="charliteral">':'</span>;</div>
|
||||
<div class="line"><a id="l00267" name="l00267"></a><span class="lineno"> 267</span> --remain;</div>
|
||||
<div class="line"><a id="l00268" name="l00268"></a><span class="lineno"> 268</span> </div>
|
||||
<div class="line"><a id="l00269" name="l00269"></a><span class="lineno"> 269</span> <span class="keywordflow">if</span>(bi < ctx->bh_end - 1)</div>
|
||||
<div class="line"><a id="l00270" name="l00270"></a><span class="lineno"> 270</span> {</div>
|
||||
<div class="line"><a id="l00271" name="l00271"></a><span class="lineno"> 271</span> ++bi;</div>
|
||||
<div class="line"><a id="l00272" name="l00272"></a><span class="lineno"> 272</span> i = (int)ctx-><a class="code hl_variable" href="structspamsum__ctx.html#a6c06adcf0f7b1a38b8471198408e0bf0">bh</a>[bi].<a class="code hl_variable" href="structblockhash__ctx.html#a612e7c2489c269ab5824859d0574063c">d_len</a>;</div>
|
||||
<div class="line"><a id="l00273" name="l00273"></a><span class="lineno"> 273</span> </div>
|
||||
<div class="line"><a id="l00274" name="l00274"></a><span class="lineno"> 274</span> <span class="keywordflow">if</span>(i <= remain)</div>
|
||||
<div class="line"><a id="l00275" name="l00275"></a><span class="lineno"> 275</span> ;</div>
|
||||
<div class="line"><a id="l00276" name="l00276"></a><span class="lineno"> 276</span> </div>
|
||||
<div class="line"><a id="l00277" name="l00277"></a><span class="lineno"> 277</span> memcpy(result, ctx-><a class="code hl_variable" href="structspamsum__ctx.html#a6c06adcf0f7b1a38b8471198408e0bf0">bh</a>[bi].<a class="code hl_variable" href="structblockhash__ctx.html#ac280cbba87103eb2f44d524e4dd72728">digest</a>, (<span class="keywordtype">size_t</span>)i);</div>
|
||||
<div class="line"><a id="l00278" name="l00278"></a><span class="lineno"> 278</span> result += i;</div>
|
||||
<div class="line"><a id="l00279" name="l00279"></a><span class="lineno"> 279</span> remain -= i;</div>
|
||||
<div class="line"><a id="l00280" name="l00280"></a><span class="lineno"> 280</span> </div>
|
||||
<div class="line"><a id="l00281" name="l00281"></a><span class="lineno"> 281</span> <span class="keywordflow">if</span>(h != 0)</div>
|
||||
<div class="line"><a id="l00282" name="l00282"></a><span class="lineno"> 282</span> {</div>
|
||||
<div class="line"><a id="l00283" name="l00283"></a><span class="lineno"> 283</span> <span class="comment">// assert(remain > 0);</span></div>
|
||||
<div class="line"><a id="l00284" name="l00284"></a><span class="lineno"> 284</span> </div>
|
||||
<div class="line"><a id="l00285" name="l00285"></a><span class="lineno"> 285</span> h = ctx-><a class="code hl_variable" href="structspamsum__ctx.html#a6c06adcf0f7b1a38b8471198408e0bf0">bh</a>[bi].<a class="code hl_variable" href="structblockhash__ctx.html#ad8f6cb69f8b66b75f46a90568cb9650c">half_h</a>;</div>
|
||||
<div class="line"><a id="l00286" name="l00286"></a><span class="lineno"> 286</span> *result = <a class="code hl_variable" href="spamsum_8c.html#a172df0ac676d5a0f2c93001809e53a41">b64</a>[h % 64];</div>
|
||||
<div class="line"><a id="l00287" name="l00287"></a><span class="lineno"> 287</span> </div>
|
||||
<div class="line"><a id="l00288" name="l00288"></a><span class="lineno"> 288</span> <span class="keywordflow">if</span>(i < 3 || *result != result[-1] || *result != result[-2] || *result != result[-3])</div>
|
||||
<div class="line"><a id="l00289" name="l00289"></a><span class="lineno"> 289</span> {</div>
|
||||
<div class="line"><a id="l00290" name="l00290"></a><span class="lineno"> 290</span> ++result;</div>
|
||||
<div class="line"><a id="l00291" name="l00291"></a><span class="lineno"> 291</span> --remain;</div>
|
||||
<div class="line"><a id="l00292" name="l00292"></a><span class="lineno"> 292</span> }</div>
|
||||
<div class="line"><a id="l00293" name="l00293"></a><span class="lineno"> 293</span> }</div>
|
||||
<div class="line"><a id="l00294" name="l00294"></a><span class="lineno"> 294</span> <span class="keywordflow">else</span></div>
|
||||
<div class="line"><a id="l00295" name="l00295"></a><span class="lineno"> 295</span> {</div>
|
||||
<div class="line"><a id="l00296" name="l00296"></a><span class="lineno"> 296</span> i = ctx-><a class="code hl_variable" href="structspamsum__ctx.html#a6c06adcf0f7b1a38b8471198408e0bf0">bh</a>[bi].<a class="code hl_variable" href="structblockhash__ctx.html#a9c466e69831790bb5420deb8b9be093a">half_digest</a>;</div>
|
||||
<div class="line"><a id="l00297" name="l00297"></a><span class="lineno"> 297</span> </div>
|
||||
<div class="line"><a id="l00298" name="l00298"></a><span class="lineno"> 298</span> <span class="keywordflow">if</span>(i != 0)</div>
|
||||
<div class="line"><a id="l00299" name="l00299"></a><span class="lineno"> 299</span> {</div>
|
||||
<div class="line"><a id="l00300" name="l00300"></a><span class="lineno"> 300</span> <span class="comment">// assert(remain > 0);</span></div>
|
||||
<div class="line"><a id="l00301" name="l00301"></a><span class="lineno"> 301</span> </div>
|
||||
<div class="line"><a id="l00302" name="l00302"></a><span class="lineno"> 302</span> *result = (uint8_t)i;</div>
|
||||
<div class="line"><a id="l00303" name="l00303"></a><span class="lineno"> 303</span> </div>
|
||||
<div class="line"><a id="l00304" name="l00304"></a><span class="lineno"> 304</span> <span class="keywordflow">if</span>(i < 3 || *result != result[-1] || *result != result[-2] || *result != result[-3])</div>
|
||||
<div class="line"><a id="l00305" name="l00305"></a><span class="lineno"> 305</span> {</div>
|
||||
<div class="line"><a id="l00306" name="l00306"></a><span class="lineno"> 306</span> ++result;</div>
|
||||
<div class="line"><a id="l00307" name="l00307"></a><span class="lineno"> 307</span> --remain;</div>
|
||||
<div class="line"><a id="l00308" name="l00308"></a><span class="lineno"> 308</span> }</div>
|
||||
<div class="line"><a id="l00309" name="l00309"></a><span class="lineno"> 309</span> }</div>
|
||||
<div class="line"><a id="l00310" name="l00310"></a><span class="lineno"> 310</span> }</div>
|
||||
<div class="line"><a id="l00311" name="l00311"></a><span class="lineno"> 311</span> }</div>
|
||||
<div class="line"><a id="l00312" name="l00312"></a><span class="lineno"> 312</span> <span class="keywordflow">else</span> <span class="keywordflow">if</span>(h != 0)</div>
|
||||
<div class="line"><a id="l00313" name="l00313"></a><span class="lineno"> 313</span> {</div>
|
||||
<div class="line"><a id="l00314" name="l00314"></a><span class="lineno"> 314</span> <span class="comment">// assert(ctx->bh[bi].d_len == 0);</span></div>
|
||||
<div class="line"><a id="l00315" name="l00315"></a><span class="lineno"> 315</span> </div>
|
||||
<div class="line"><a id="l00316" name="l00316"></a><span class="lineno"> 316</span> <span class="comment">// assert(remain > 0);</span></div>
|
||||
<div class="line"><a id="l00317" name="l00317"></a><span class="lineno"> 317</span> </div>
|
||||
<div class="line"><a id="l00318" name="l00318"></a><span class="lineno"> 318</span> *result++ = <a class="code hl_variable" href="spamsum_8c.html#a172df0ac676d5a0f2c93001809e53a41">b64</a>[ctx-><a class="code hl_variable" href="structspamsum__ctx.html#a6c06adcf0f7b1a38b8471198408e0bf0">bh</a>[bi].<a class="code hl_variable" href="structblockhash__ctx.html#a72a2a4c2cadb39423f6448b49e7b6a4b">h</a> % 64];</div>
|
||||
<div class="line"><a id="l00319" name="l00319"></a><span class="lineno"> 319</span> <span class="comment">/* No need to bother with FUZZY_FLAG_ELIMSEQ, because this</span></div>
|
||||
<div class="line"><a id="l00320" name="l00320"></a><span class="lineno"> 320</span><span class="comment"> * digest has length 1. */</span></div>
|
||||
<div class="line"><a id="l00321" name="l00321"></a><span class="lineno"> 321</span> --remain;</div>
|
||||
<div class="line"><a id="l00322" name="l00322"></a><span class="lineno"> 322</span> }</div>
|
||||
<div class="line"><a id="l00323" name="l00323"></a><span class="lineno"> 323</span> </div>
|
||||
<div class="line"><a id="l00324" name="l00324"></a><span class="lineno"> 324</span> *result = 0;</div>
|
||||
<div class="line"><a id="l00325" name="l00325"></a><span class="lineno"> 325</span> </div>
|
||||
<div class="line"><a id="l00326" name="l00326"></a><span class="lineno"> 326</span> <span class="keywordflow">return</span> 0;</div>
|
||||
<div class="line"><a id="l00327" name="l00327"></a><span class="lineno"> 327</span>}</div>
|
||||
</div>
|
||||
<div class="ttc" id="aaaruformat_8h_html"><div class="ttname"><a href="aaruformat_8h.html">aaruformat.h</a></div></div>
|
||||
<div class="ttc" id="adecls_8h_html_a018e0da1c1f7e4f6187a982c0e40e056"><div class="ttname"><a href="decls_8h.html#a018e0da1c1f7e4f6187a982c0e40e056">AARU_CALL</a></div><div class="ttdeci">#define AARU_CALL</div><div class="ttdef"><b>Definition</b> <a href="decls_8h_source.html#l00045">decls.h:45</a></div></div>
|
||||
<div class="ttc" id="adecls_8h_html_a8a7eac34f7a0caaa0d4a57e9627ba173"><div class="ttname"><a href="decls_8h.html#a8a7eac34f7a0caaa0d4a57e9627ba173">AARU_LOCAL</a></div><div class="ttdeci">#define AARU_LOCAL</div><div class="ttdef"><b>Definition</b> <a href="decls_8h_source.html#l00055">decls.h:55</a></div></div>
|
||||
<div class="ttc" id="adecls_8h_html_a9001412c35f3c92d3a9320d27b0d97f9"><div class="ttname"><a href="decls_8h.html#a9001412c35f3c92d3a9320d27b0d97f9">AARU_EXPORT</a></div><div class="ttdeci">#define AARU_EXPORT</div><div class="ttdef"><b>Definition</b> <a href="decls_8h_source.html#l00054">decls.h:54</a></div></div>
|
||||
<div class="ttc" id="aspamsum_8c_html_a0e886062da69d341fbee947ba56cae96"><div class="ttname"><a href="spamsum_8c.html#a0e886062da69d341fbee947ba56cae96">SUM_HASH</a></div><div class="ttdeci">#define SUM_HASH(c, h)</div><div class="ttdef"><b>Definition</b> <a href="#l00081">spamsum.c:81</a></div></div>
|
||||
<div class="ttc" id="aspamsum_8c_html_a172df0ac676d5a0f2c93001809e53a41"><div class="ttname"><a href="spamsum_8c.html#a172df0ac676d5a0f2c93001809e53a41">b64</a></div><div class="ttdeci">static uint8_t b64[]</div><div class="ttdef"><b>Definition</b> <a href="#l00032">spamsum.c:32</a></div></div>
|
||||
<div class="ttc" id="aspamsum_8c_html_a24c6d35239a8d1fee6e93aa12bbd5bd6"><div class="ttname"><a href="spamsum_8c.html#a24c6d35239a8d1fee6e93aa12bbd5bd6">fuzzy_try_fork_blockhash</a></div><div class="ttdeci">void fuzzy_try_fork_blockhash(spamsum_ctx *ctx)</div><div class="ttdef"><b>Definition</b> <a href="#l00175">spamsum.c:175</a></div></div>
|
||||
<div class="ttc" id="aspamsum_8c_html_a32e1f1b80d38adcc429fdd861289fe12"><div class="ttname"><a href="spamsum_8c.html#a32e1f1b80d38adcc429fdd861289fe12">SSDEEP_BS</a></div><div class="ttdeci">#define SSDEEP_BS(index)</div><div class="ttdef"><b>Definition</b> <a href="#l00082">spamsum.c:82</a></div></div>
|
||||
<div class="ttc" id="aspamsum_8c_html_a680150d4b3df13261af758c504a1f848"><div class="ttname"><a href="spamsum_8c.html#a680150d4b3df13261af758c504a1f848">fuzzy_engine_step</a></div><div class="ttdeci">void fuzzy_engine_step(spamsum_ctx *ctx, uint8_t c)</div><div class="ttdef"><b>Definition</b> <a href="#l00084">spamsum.c:84</a></div></div>
|
||||
<div class="ttc" id="aspamsum_8c_html_a6fe74704e44be7adfaa2ce676f3c3de4"><div class="ttname"><a href="spamsum_8c.html#a6fe74704e44be7adfaa2ce676f3c3de4">aaruf_spamsum_free</a></div><div class="ttdeci">void aaruf_spamsum_free(spamsum_ctx *ctx)</div><div class="ttdoc">Frees a spamsum (fuzzy hash) context.</div><div class="ttdef"><b>Definition</b> <a href="#l00075">spamsum.c:75</a></div></div>
|
||||
<div class="ttc" id="aspamsum_8c_html_a707b15790ae068604c385681b164b64d"><div class="ttname"><a href="spamsum_8c.html#a707b15790ae068604c385681b164b64d">ROLL_SUM</a></div><div class="ttdeci">#define ROLL_SUM(ctx)</div><div class="ttdef"><b>Definition</b> <a href="#l00080">spamsum.c:80</a></div></div>
|
||||
<div class="ttc" id="aspamsum_8c_html_a793dac760aedda6414ba4014eb2ed0c7"><div class="ttname"><a href="spamsum_8c.html#a793dac760aedda6414ba4014eb2ed0c7">aaruf_spamsum_init</a></div><div class="ttdeci">spamsum_ctx * aaruf_spamsum_init(void)</div><div class="ttdef"><b>Definition</b> <a href="#l00037">spamsum.c:37</a></div></div>
|
||||
<div class="ttc" id="aspamsum_8c_html_a906ad6bd1809bf999874c848af7c648b"><div class="ttname"><a href="spamsum_8c.html#a906ad6bd1809bf999874c848af7c648b">fuzzy_try_reduce_blockhash</a></div><div class="ttdeci">void fuzzy_try_reduce_blockhash(spamsum_ctx *ctx)</div><div class="ttdef"><b>Definition</b> <a href="#l00155">spamsum.c:155</a></div></div>
|
||||
<div class="ttc" id="aspamsum_8c_html_a9f287da4a58c0d3ab8f0243de5fe3f8d"><div class="ttname"><a href="spamsum_8c.html#a9f287da4a58c0d3ab8f0243de5fe3f8d">roll_hash</a></div><div class="ttdeci">void roll_hash(spamsum_ctx *ctx, uint8_t c)</div><div class="ttdef"><b>Definition</b> <a href="#l00137">spamsum.c:137</a></div></div>
|
||||
<div class="ttc" id="aspamsum_8c_html_ab1f4894af1962e933767248c4fb0e2e8"><div class="ttname"><a href="spamsum_8c.html#ab1f4894af1962e933767248c4fb0e2e8">aaruf_spamsum_final</a></div><div class="ttdeci">int aaruf_spamsum_final(spamsum_ctx *ctx, uint8_t *result)</div><div class="ttdef"><b>Definition</b> <a href="#l00191">spamsum.c:191</a></div></div>
|
||||
<div class="ttc" id="aspamsum_8c_html_aefe8cc89b1c87185e7bb4f7b8d1f4c80"><div class="ttname"><a href="spamsum_8c.html#aefe8cc89b1c87185e7bb4f7b8d1f4c80">aaruf_spamsum_update</a></div><div class="ttdeci">int aaruf_spamsum_update(spamsum_ctx *ctx, const uint8_t *data, const uint32_t len)</div><div class="ttdoc">Updates the spamsum context with new data.</div><div class="ttdef"><b>Definition</b> <a href="#l00059">spamsum.c:59</a></div></div>
|
||||
<div class="ttc" id="aspamsum_8h_html"><div class="ttname"><a href="spamsum_8h.html">spamsum.h</a></div></div>
|
||||
<div class="ttc" id="aspamsum_8h_html_a137a76507c72a195455009b62e28c671"><div class="ttname"><a href="spamsum_8h.html#a137a76507c72a195455009b62e28c671">SPAMSUM_LENGTH</a></div><div class="ttdeci">#define SPAMSUM_LENGTH</div><div class="ttdef"><b>Definition</b> <a href="spamsum_8h_source.html#l00024">spamsum.h:24</a></div></div>
|
||||
<div class="ttc" id="aspamsum_8h_html_a2309f23e98c4c0370f32e3e3cb09afa5"><div class="ttname"><a href="spamsum_8h.html#a2309f23e98c4c0370f32e3e3cb09afa5">FUZZY_MAX_RESULT</a></div><div class="ttdeci">#define FUZZY_MAX_RESULT</div><div class="ttdef"><b>Definition</b> <a href="spamsum_8h_source.html#l00030">spamsum.h:30</a></div></div>
|
||||
<div class="ttc" id="aspamsum_8h_html_a6e3701d1edb7f42493d091d7202fa299"><div class="ttname"><a href="spamsum_8h.html#a6e3701d1edb7f42493d091d7202fa299">ROLLING_WINDOW</a></div><div class="ttdeci">#define ROLLING_WINDOW</div><div class="ttdef"><b>Definition</b> <a href="spamsum_8h_source.html#l00026">spamsum.h:26</a></div></div>
|
||||
<div class="ttc" id="aspamsum_8h_html_ab05c87bf87434740e1400b8f7fc9cbaa"><div class="ttname"><a href="spamsum_8h.html#ab05c87bf87434740e1400b8f7fc9cbaa">NUM_BLOCKHASHES</a></div><div class="ttdeci">#define NUM_BLOCKHASHES</div><div class="ttdef"><b>Definition</b> <a href="spamsum_8h_source.html#l00025">spamsum.h:25</a></div></div>
|
||||
<div class="ttc" id="aspamsum_8h_html_adcd60db457233e4a407009f6d4ceea48"><div class="ttname"><a href="spamsum_8h.html#adcd60db457233e4a407009f6d4ceea48">HASH_INIT</a></div><div class="ttdeci">#define HASH_INIT</div><div class="ttdef"><b>Definition</b> <a href="spamsum_8h_source.html#l00027">spamsum.h:27</a></div></div>
|
||||
<div class="ttc" id="astructblockhash__ctx_html_a612e7c2489c269ab5824859d0574063c"><div class="ttname"><a href="structblockhash__ctx.html#a612e7c2489c269ab5824859d0574063c">blockhash_ctx::d_len</a></div><div class="ttdeci">uint32_t d_len</div><div class="ttdef"><b>Definition</b> <a href="spamsum_8h_source.html#l00038">spamsum.h:38</a></div></div>
|
||||
<div class="ttc" id="astructblockhash__ctx_html_a72a2a4c2cadb39423f6448b49e7b6a4b"><div class="ttname"><a href="structblockhash__ctx.html#a72a2a4c2cadb39423f6448b49e7b6a4b">blockhash_ctx::h</a></div><div class="ttdeci">uint32_t h</div><div class="ttdef"><b>Definition</b> <a href="spamsum_8h_source.html#l00034">spamsum.h:34</a></div></div>
|
||||
<div class="ttc" id="astructblockhash__ctx_html_a9c466e69831790bb5420deb8b9be093a"><div class="ttname"><a href="structblockhash__ctx.html#a9c466e69831790bb5420deb8b9be093a">blockhash_ctx::half_digest</a></div><div class="ttdeci">uint8_t half_digest</div><div class="ttdef"><b>Definition</b> <a href="spamsum_8h_source.html#l00037">spamsum.h:37</a></div></div>
|
||||
<div class="ttc" id="astructblockhash__ctx_html_ac280cbba87103eb2f44d524e4dd72728"><div class="ttname"><a href="structblockhash__ctx.html#ac280cbba87103eb2f44d524e4dd72728">blockhash_ctx::digest</a></div><div class="ttdeci">uint8_t digest[64]</div><div class="ttdef"><b>Definition</b> <a href="spamsum_8h_source.html#l00036">spamsum.h:36</a></div></div>
|
||||
<div class="ttc" id="astructblockhash__ctx_html_ad8f6cb69f8b66b75f46a90568cb9650c"><div class="ttname"><a href="structblockhash__ctx.html#ad8f6cb69f8b66b75f46a90568cb9650c">blockhash_ctx::half_h</a></div><div class="ttdeci">uint32_t half_h</div><div class="ttdef"><b>Definition</b> <a href="spamsum_8h_source.html#l00035">spamsum.h:35</a></div></div>
|
||||
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<div class="ttc" id="astructroll__state_html_a2ae7c7dc4fcd20c1911ae63ed3e166b8"><div class="ttname"><a href="structroll__state.html#a2ae7c7dc4fcd20c1911ae63ed3e166b8">roll_state::n</a></div><div class="ttdeci">uint32_t n</div><div class="ttdef"><b>Definition</b> <a href="spamsum_8h_source.html#l00047">spamsum.h:47</a></div></div>
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<div class="ttc" id="astructspamsum__ctx_html"><div class="ttname"><a href="structspamsum__ctx.html">spamsum_ctx</a></div><div class="ttdef"><b>Definition</b> <a href="spamsum_8h_source.html#l00050">spamsum.h:51</a></div></div>
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<div class="ttc" id="astructspamsum__ctx_html_a6c06adcf0f7b1a38b8471198408e0bf0"><div class="ttname"><a href="structspamsum__ctx.html#a6c06adcf0f7b1a38b8471198408e0bf0">spamsum_ctx::bh</a></div><div class="ttdeci">blockhash_ctx bh[31]</div><div class="ttdef"><b>Definition</b> <a href="spamsum_8h_source.html#l00054">spamsum.h:54</a></div></div>
|
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<div class="ttc" id="astructspamsum__ctx_html_a77be799510adf0ac63ec01584dcbb05a"><div class="ttname"><a href="structspamsum__ctx.html#a77be799510adf0ac63ec01584dcbb05a">spamsum_ctx::roll</a></div><div class="ttdeci">roll_state roll</div><div class="ttdef"><b>Definition</b> <a href="spamsum_8h_source.html#l00056">spamsum.h:56</a></div></div>
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<div class="ttc" id="astructspamsum__ctx_html_a7ddd33313b728271d39a1277726608c8"><div class="ttname"><a href="structspamsum__ctx.html#a7ddd33313b728271d39a1277726608c8">spamsum_ctx::bh_end</a></div><div class="ttdeci">uint32_t bh_end</div><div class="ttdef"><b>Definition</b> <a href="spamsum_8h_source.html#l00053">spamsum.h:53</a></div></div>
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<div class="ttc" id="astructspamsum__ctx_html_a8936ea7a028ee607420647aed0f968fe"><div class="ttname"><a href="structspamsum__ctx.html#a8936ea7a028ee607420647aed0f968fe">spamsum_ctx::total_size</a></div><div class="ttdeci">uint64_t total_size</div><div class="ttdef"><b>Definition</b> <a href="spamsum_8h_source.html#l00055">spamsum.h:55</a></div></div>
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