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-rw-r--r--Sockets/Base64.cpp272
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diff --git a/Sockets/Base64.cpp b/Sockets/Base64.cpp
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+++ b/Sockets/Base64.cpp
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+/** \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
+
+
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