From fffd213c8cba2135afda493d797c41c10354770e Mon Sep 17 00:00:00 2001 From: Othmar Gsenger Date: Sat, 12 Apr 2008 11:38:42 +0000 Subject: big svn cleanup --- src/Sockets/Base64.cpp | 272 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 272 insertions(+) create mode 100644 src/Sockets/Base64.cpp (limited to 'src/Sockets/Base64.cpp') diff --git a/src/Sockets/Base64.cpp b/src/Sockets/Base64.cpp new file mode 100644 index 0000000..4619756 --- /dev/null +++ b/src/Sockets/Base64.cpp @@ -0,0 +1,272 @@ +/** \file Base64.cpp + ** \date 2004-02-13 + ** \author grymse@alhem.net +**/ +/* +Copyright (C) 2004-2007 Anders Hedstrom + +This library is made available under the terms of the GNU GPL. + +If you would like to use this library in a closed-source application, +a separate license agreement is available. For information about +the closed-source license agreement for the C++ sockets library, +please visit http://www.alhem.net/Sockets/license.html and/or +email license@alhem.net. + +This program is free software; you can redistribute it and/or +modify it under the terms of the GNU General Public License +as published by the Free Software Foundation; either version 2 +of the License, or (at your option) any later version. + +This program is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with this program; if not, write to the Free Software +Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. +*/ +#include "Base64.h" + +#ifdef SOCKETS_NAMESPACE +namespace SOCKETS_NAMESPACE { +#endif + + +const char *Base64::bstr = + "ABCDEFGHIJKLMNOPQ" + "RSTUVWXYZabcdefgh" + "ijklmnopqrstuvwxy" + "z0123456789+/"; + +const char Base64::rstr[] = { + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 62, 0, 0, 0, 63, + 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 0, 0, 0, 0, 0, 0, + 0, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, + 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 0, 0, 0, 0, 0, + 0, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, + 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 0, 0, 0, 0, 0}; + + +Base64::Base64() +{ +} + + +void Base64::encode(FILE *fil, std::string& output, bool add_crlf) +{ + size_t remain; + size_t i = 0; + size_t o = 0; + char input[4]; + + output = ""; + remain = fread(input,1,3,fil); + while (remain > 0) + { + if (add_crlf && o && o % 76 == 0) + output += "\n"; + switch (remain) + { + case 1: + output += bstr[ ((input[i] >> 2) & 0x3f) ]; + output += bstr[ ((input[i] << 4) & 0x30) ]; + output += "=="; + break; + case 2: + output += bstr[ ((input[i] >> 2) & 0x3f) ]; + output += bstr[ ((input[i] << 4) & 0x30) + ((input[i + 1] >> 4) & 0x0f) ]; + output += bstr[ ((input[i + 1] << 2) & 0x3c) ]; + output += "="; + break; + default: + output += bstr[ ((input[i] >> 2) & 0x3f) ]; + output += bstr[ ((input[i] << 4) & 0x30) + ((input[i + 1] >> 4) & 0x0f) ]; + output += bstr[ ((input[i + 1] << 2) & 0x3c) + ((input[i + 2] >> 6) & 0x03) ]; + output += bstr[ (input[i + 2] & 0x3f) ]; + } + o += 4; + // + remain = fread(input,1,3,fil); + } +} + + +void Base64::encode(const std::string& str_in, std::string& str_out, bool add_crlf) +{ + encode(str_in.c_str(), str_in.size(), str_out, add_crlf); +} + + +void Base64::encode(const char* input,size_t l,std::string& output, bool add_crlf) +{ + size_t i = 0; + size_t o = 0; + + output = ""; + while (i < l) + { + size_t remain = l - i; + if (add_crlf && o && o % 76 == 0) + output += "\n"; + switch (remain) + { + case 1: + output += bstr[ ((input[i] >> 2) & 0x3f) ]; + output += bstr[ ((input[i] << 4) & 0x30) ]; + output += "=="; + break; + case 2: + output += bstr[ ((input[i] >> 2) & 0x3f) ]; + output += bstr[ ((input[i] << 4) & 0x30) + ((input[i + 1] >> 4) & 0x0f) ]; + output += bstr[ ((input[i + 1] << 2) & 0x3c) ]; + output += "="; + break; + default: + output += bstr[ ((input[i] >> 2) & 0x3f) ]; + output += bstr[ ((input[i] << 4) & 0x30) + ((input[i + 1] >> 4) & 0x0f) ]; + output += bstr[ ((input[i + 1] << 2) & 0x3c) + ((input[i + 2] >> 6) & 0x03) ]; + output += bstr[ (input[i + 2] & 0x3f) ]; + } + o += 4; + i += 3; + } +} + + +void Base64::encode(const unsigned char* input,size_t l,std::string& output,bool add_crlf) +{ + size_t i = 0; + size_t o = 0; + + output = ""; + while (i < l) + { + size_t remain = l - i; + if (add_crlf && o && o % 76 == 0) + output += "\n"; + switch (remain) + { + case 1: + output += bstr[ ((input[i] >> 2) & 0x3f) ]; + output += bstr[ ((input[i] << 4) & 0x30) ]; + output += "=="; + break; + case 2: + output += bstr[ ((input[i] >> 2) & 0x3f) ]; + output += bstr[ ((input[i] << 4) & 0x30) + ((input[i + 1] >> 4) & 0x0f) ]; + output += bstr[ ((input[i + 1] << 2) & 0x3c) ]; + output += "="; + break; + default: + output += bstr[ ((input[i] >> 2) & 0x3f) ]; + output += bstr[ ((input[i] << 4) & 0x30) + ((input[i + 1] >> 4) & 0x0f) ]; + output += bstr[ ((input[i + 1] << 2) & 0x3c) + ((input[i + 2] >> 6) & 0x03) ]; + output += bstr[ (input[i + 2] & 0x3f) ]; + } + o += 4; + i += 3; + } +} + + +void Base64::decode(const std::string& input,std::string& output) +{ + size_t i = 0; + size_t l = input.size(); + + output = ""; + while (i < l) + { + while (i < l && (input[i] == 13 || input[i] == 10)) + i++; + if (i < l) + { + char b1 = (char)((rstr[(int)input[i]] << 2 & 0xfc) + + (rstr[(int)input[i + 1]] >> 4 & 0x03)); + output += b1; + if (input[i + 2] != '=') + { + char b2 = (char)((rstr[(int)input[i + 1]] << 4 & 0xf0) + + (rstr[(int)input[i + 2]] >> 2 & 0x0f)); + output += b2; + } + if (input[i + 3] != '=') + { + char b3 = (char)((rstr[(int)input[i + 2]] << 6 & 0xc0) + + rstr[(int)input[i + 3]]); + output += b3; + } + i += 4; + } + } +} + + +void Base64::decode(const std::string& input, unsigned char *output, size_t& sz) +{ + size_t i = 0; + size_t l = input.size(); + size_t j = 0; + + while (i < l) + { + while (i < l && (input[i] == 13 || input[i] == 10)) + i++; + if (i < l) + { + unsigned char b1 = (unsigned char)((rstr[(int)input[i]] << 2 & 0xfc) + + (rstr[(int)input[i + 1]] >> 4 & 0x03)); + if (output) + { + output[j] = b1; + } + j++; + if (input[i + 2] != '=') + { + unsigned char b2 = (unsigned char)((rstr[(int)input[i + 1]] << 4 & 0xf0) + + (rstr[(int)input[i + 2]] >> 2 & 0x0f)); + if (output) + { + output[j] = b2; + } + j++; + } + if (input[i + 3] != '=') + { + unsigned char b3 = (unsigned char)((rstr[(int)input[i + 2]] << 6 & 0xc0) + + rstr[(int)input[i + 3]]); + if (output) + { + output[j] = b3; + } + j++; + } + i += 4; + } + } + sz = j; +} + + +size_t Base64::decode_length(const std::string& str64) +{ + if (!str64.size() || str64.size() % 4) + return 0; + size_t l = 3 * (str64.size() / 4 - 1) + 1; + if (str64[str64.size() - 2] != '=') + l++; + if (str64[str64.size() - 1] != '=') + l++; + return l; +} + + +#ifdef SOCKETS_NAMESPACE +} +#endif + + -- cgit v1.2.3