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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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< 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 >
< 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) 2019-2026 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 >
< 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 >
< 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 >
< div class = "line" > < a id = "l00007" name = "l00007" > < / a > < span class = "lineno" > 7< / span > < span class = "comment" > *< / span > < / div >
< 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 >
< 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 >
< 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 >
< 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 >
< div class = "line" > < a id = "l00012" name = "l00012" > < / a > < span class = "lineno" > 12< / span > < span class = "comment" > *< / span > < / div >
< 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 >
< 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 >
< 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 >
< 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 >
< div class = "line" > < a id = "l00017" name = "l00017" > < / a > < span class = "lineno" > 17< / span > < span class = "comment" > *< / span > < / div >
< 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 >
< 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 >
< div class = "line" > < a id = "l00020" name = "l00020" > < / a > < span class = "lineno" > 20< / span > < span class = "comment" > */< / span > < / div >
< div class = "line" > < a id = "l00021" name = "l00021" > < / a > < span class = "lineno" > 21< / span > < / div >
< div class = "line" > < a id = "l00022" name = "l00022" > < / a > < span class = "lineno" > 22< / span > < span class = "preprocessor" > #include < errno.h> < / span > < / div >
< div class = "line" > < a id = "l00023" name = "l00023" > < / a > < span class = "lineno" > 23< / span > < span class = "preprocessor" > #include < stdint.h> < / span > < / div >
< div class = "line" > < a id = "l00024" name = "l00024" > < / a > < span class = "lineno" > 24< / span > < span class = "preprocessor" > #include < stdio.h> < / span > < / div >
< div class = "line" > < a id = "l00025" name = "l00025" > < / a > < span class = "lineno" > 25< / span > < span class = "preprocessor" > #include < stdlib.h> < / span > < / div >
< div class = "line" > < a id = "l00026" name = "l00026" > < / a > < span class = "lineno" > 26< / span > < span class = "preprocessor" > #include < string.h> < / span > < / div >
< div class = "line" > < a id = "l00027" name = "l00027" > < / a > < span class = "lineno" > 27< / span > < / div >
< 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 >
< div class = "line" > < a id = "l00029" name = "l00029" > < / a > < span class = "lineno" > 29< / span > < / div >
< 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 >
< div class = "line" > < a id = "l00031" name = "l00031" > < / a > < span class = "lineno" > 31< / span > < / div >
< div class = "foldopen" id = "foldopen00032" data-start = "{" data-end = "};" >
< 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 >
< 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 >
< 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 >
< 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 >
< / div >
< div class = "line" > < a id = "l00036" name = "l00036" > < / a > < span class = "lineno" > 36< / span > < / div >
< div class = "foldopen" id = "foldopen00037" data-start = "{" data-end = "}" >
< 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 >
< div class = "line" > < a id = "l00038" name = "l00038" > < / a > < span class = "lineno" > 38< / span > {< / div >
< 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 >
< 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 >
< div class = "line" > < a id = "l00041" name = "l00041" > < / a > < span class = "lineno" > 41< / span > < / div >
< 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 >
< div class = "line" > < a id = "l00043" name = "l00043" > < / a > < span class = "lineno" > 43< / span > < / div >
< 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 >
< 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 >
< 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 >
< div class = "line" > < a id = "l00047" name = "l00047" > < / a > < span class = "lineno" > 47< / span > < / div >
< div class = "line" > < a id = "l00048" name = "l00048" > < / a > < span class = "lineno" > 48< / span > < span class = "keywordflow" > return< / span > ctx;< / div >
< div class = "line" > < a id = "l00049" name = "l00049" > < / a > < span class = "lineno" > 49< / span > }< / div >
< / div >
< div class = "line" > < a id = "l00050" name = "l00050" > < / a > < span class = "lineno" > 50< / span > < / div >
< div class = "foldopen" id = "foldopen00059" data-start = "{" data-end = "}" >
< 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 >
< div class = "line" > < a id = "l00060" name = "l00060" > < / a > < span class = "lineno" > 60< / span > {< / div >
< 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 >
< div class = "line" > < a id = "l00062" name = "l00062" > < / a > < span class = "lineno" > 62< / span > < / div >
< 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 >
< div class = "line" > < a id = "l00064" name = "l00064" > < / a > < span class = "lineno" > 64< / span > < / div >
< 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 >
< div class = "line" > < a id = "l00066" name = "l00066" > < / a > < span class = "lineno" > 66< / span > < / div >
< div class = "line" > < a id = "l00067" name = "l00067" > < / a > < span class = "lineno" > 67< / span > < span class = "keywordflow" > return< / span > 0;< / div >
< div class = "line" > < a id = "l00068" name = "l00068" > < / a > < span class = "lineno" > 68< / span > }< / div >
< / div >
< div class = "line" > < a id = "l00069" name = "l00069" > < / a > < span class = "lineno" > 69< / span > < / div >
< div class = "foldopen" id = "foldopen00075" data-start = "{" data-end = "}" >
< 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 >
< div class = "line" > < a id = "l00076" name = "l00076" > < / a > < span class = "lineno" > 76< / span > {< / div >
< div class = "line" > < a id = "l00077" name = "l00077" > < / a > < span class = "lineno" > 77< / span > < span class = "keywordflow" > if< / span > (ctx) free(ctx);< / div >
< div class = "line" > < a id = "l00078" name = "l00078" > < / a > < span class = "lineno" > 78< / span > }< / div >
< / div >
< div class = "line" > < a id = "l00079" name = "l00079" > < / a > < span class = "lineno" > 79< / span > < / div >
< 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 >
< 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 >
< 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 >
< div class = "line" > < a id = "l00083" name = "l00083" > < / a > < span class = "lineno" > 83< / span > < / div >
< div class = "foldopen" id = "foldopen00084" data-start = "{" data-end = "}" >
< 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 >
< div class = "line" > < a id = "l00085" name = "l00085" > < / a > < span class = "lineno" > 85< / span > {< / div >
< div class = "line" > < a id = "l00086" name = "l00086" > < / a > < span class = "lineno" > 86< / span > uint32_t i = 0;< / div >
< 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 >
2026-01-04 16:05:30 +00:00
< 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#l00046" > decls.h:46< / 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#l00056" > decls.h:56< / 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#l00055" > decls.h:55< / a > < / div > < / div >
2025-10-11 01:35:43 +01:00
< 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 >
< div class = "ttc" id = "astructroll__state_html_a154924f3e18b1d8573a9fafa9b9c0ede" > < div class = "ttname" > < a href = "structroll__state.html#a154924f3e18b1d8573a9fafa9b9c0ede" > roll_state::h2< / a > < / div > < div class = "ttdeci" > uint32_t h2< / div > < div class = "ttdef" > < b > Definition< / b > < a href = "spamsum_8h_source.html#l00045" > spamsum.h:45< / a > < / div > < / div >
< 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 >
< div class = "ttc" id = "astructroll__state_html_a54693b882416c9bd195bf1f17bfdac86" > < div class = "ttname" > < a href = "structroll__state.html#a54693b882416c9bd195bf1f17bfdac86" > roll_state::h1< / a > < / div > < div class = "ttdeci" > uint32_t h1< / div > < div class = "ttdef" > < b > Definition< / b > < a href = "spamsum_8h_source.html#l00044" > spamsum.h:44< / a > < / div > < / div >
< div class = "ttc" id = "astructroll__state_html_a874ffab29cc5570b58ea258e5a267efa" > < div class = "ttname" > < a href = "structroll__state.html#a874ffab29cc5570b58ea258e5a267efa" > roll_state::h3< / a > < / div > < div class = "ttdeci" > uint32_t h3< / div > < div class = "ttdef" > < b > Definition< / b > < a href = "spamsum_8h_source.html#l00046" > spamsum.h:46< / a > < / div > < / div >
< div class = "ttc" id = "astructroll__state_html_af671026012e05658f8e1247b89e26ff8" > < div class = "ttname" > < a href = "structroll__state.html#af671026012e05658f8e1247b89e26ff8" > roll_state::window< / a > < / div > < div class = "ttdeci" > uint8_t window[7]< / div > < div class = "ttdef" > < b > Definition< / b > < a href = "spamsum_8h_source.html#l00043" > spamsum.h:43< / a > < / div > < / div >
< 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 >
< 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 >
< 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 >
< 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 >
< 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 >
< div class = "ttc" id = "astructspamsum__ctx_html_ac286a992cea333182165a4fa4a9ddc8f" > < div class = "ttname" > < a href = "structspamsum__ctx.html#ac286a992cea333182165a4fa4a9ddc8f" > spamsum_ctx::bh_start< / a > < / div > < div class = "ttdeci" > uint32_t bh_start< / div > < div class = "ttdef" > < b > Definition< / b > < a href = "spamsum_8h_source.html#l00052" > spamsum.h:52< / a > < / div > < / div >
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< li class = "navelem" > < a href = "dir_68267d1309a1af8e8297ef4c3efbcdba.html" > src< / a > < / li > < li class = "navelem" > < a href = "dir_6b3196bdf3f485a11a190486a5644c9a.html" > checksum< / a > < / li > < li class = "navelem" > < a href = "spamsum_8c.html" > spamsum.c< / a > < / li >
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