1 //-------------------------------------------------------------------------- 2 // Copyright (C) 2017-2021 Cisco and/or its affiliates. All rights reserved. 3 // 4 // This program is free software; you can redistribute it and/or modify it 5 // under the terms of the GNU General Public License Version 2 as published 6 // by the Free Software Foundation. You may not use, modify or distribute 7 // this program under any other version of the GNU General Public License. 8 // 9 // This program is distributed in the hope that it will be useful, but 10 // WITHOUT ANY WARRANTY; without even the implied warranty of 11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 // General Public License for more details. 13 // 14 // You should have received a copy of the GNU General Public License along 15 // with this program; if not, write to the Free Software Foundation, Inc., 16 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. 17 //-------------------------------------------------------------------------- 18 19 // base64_encoder.h author Russ Combs <rucombs@cisco.com> 20 21 #ifndef BASE64_ENCODER_H 22 #define BASE64_ENCODER_H 23 24 // this is based on the excellent work by devolve found at 25 // https://sourceforge.net/projects/libb64/. 26 27 // usage: instantiate, encode+, finish 28 // buf must hold 2*length_in 29 30 #include <cstdint> 31 #include "main/snort_types.h" 32 33 namespace snort 34 { 35 class SO_PUBLIC Base64Encoder 36 { 37 public: Base64Encoder()38 Base64Encoder() 39 { reset(); } 40 41 unsigned encode(const uint8_t* plain_text, unsigned length, char* buf); 42 unsigned finish(char* buf); 43 reset()44 void reset() 45 { step = step_A; state = 0; } 46 47 private: 48 enum Steps { step_A, step_B, step_C }; 49 Steps step; 50 uint8_t state; 51 }; 52 } 53 #endif 54 55