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Diffstat (limited to 'Minecraft.Client/Durango/Network/base64.cpp')
| -rw-r--r-- | Minecraft.Client/Durango/Network/base64.cpp | 156 |
1 files changed, 156 insertions, 0 deletions
diff --git a/Minecraft.Client/Durango/Network/base64.cpp b/Minecraft.Client/Durango/Network/base64.cpp new file mode 100644 index 00000000..c5af745c --- /dev/null +++ b/Minecraft.Client/Durango/Network/base64.cpp @@ -0,0 +1,156 @@ +/* + base64.cpp and base64.h + + Copyright (C) 2004-2008 René Nyffenegger + + This source code is provided 'as-is', without any express or implied + warranty. In no event will the author be held liable for any damages + arising from the use of this software. + + Permission is granted to anyone to use this software for any purpose, + including commercial applications, and to alter it and redistribute it + freely, subject to the following restrictions: + + 1. The origin of this source code must not be misrepresented; you must not + claim that you wrote the original source code. If you use this source code + in a product, an acknowledgment in the product documentation would be + appreciated but is not required. + + 2. Altered source versions must be plainly marked as such, and must not be + misrepresented as being the original source code. + + 3. This notice may not be removed or altered from any source distribution. + + René Nyffenegger rene.nyffenegger@adp-gmbh.ch + +*/ + +#include "stdafx.h" + +#include "base64.h" +#include <iostream> + +static const std::wstring base64_chars = + L"ABCDEFGHIJKLMNOPQRSTUVWXYZ" + L"abcdefghijklmnopqrstuvwxyz" + L"0123456789+/"; + + +static inline bool is_base64(wchar_t c) +{ + return (isalnum(c) || (c == L'+') || (c == L'/')); +} + +// 4J changed to use Platform::String +Platform::String^ base64_encode(unsigned char* chars_to_encode, unsigned int in_len) +{ + std::wstring ret; + int i = 0; + int j = 0; + unsigned char char_array_3[3]; + unsigned char char_array_4[4]; + + while (in_len--) + { + char_array_3[i++] = *(chars_to_encode++); + if (i == 3) + { + char_array_4[0] = (char_array_3[0] & 0xfc) >> 2; + char_array_4[1] = ((char_array_3[0] & 0x03) << 4) + ((char_array_3[1] & 0xf0) >> 4); + char_array_4[2] = ((char_array_3[1] & 0x0f) << 2) + ((char_array_3[2] & 0xc0) >> 6); + char_array_4[3] = char_array_3[2] & 0x3f; + + for(int ii = 0; (ii <4) ; ii++) + { + ret += base64_chars[char_array_4[ii]]; + } + i = 0; + } + } + + if (i) + { + for(j = i; j < 3; j++) + { + char_array_3[j] = '\0'; + } + + char_array_4[0] = (char_array_3[0] & 0xfc) >> 2; + char_array_4[1] = ((char_array_3[0] & 0x03) << 4) + ((char_array_3[1] & 0xf0) >> 4); + char_array_4[2] = ((char_array_3[1] & 0x0f) << 2) + ((char_array_3[2] & 0xc0) >> 6); + char_array_4[3] = char_array_3[2] & 0x3f; + + for (j = 0; (j < i + 1); j++) + { + ret += base64_chars[char_array_4[j]]; + } + + while((i++ < 3)) + { + ret += L'='; + } + + } + + return ref new Platform::String(ret.c_str()); + +} + +void base64_decode(Platform::String ^encoded_string, unsigned char *output, unsigned int out_len) +{ + int in_len = encoded_string->Length(); + int i = 0; + int j = 0; + int in_ = 0; + unsigned char char_array_4[4]; + unsigned char char_array_3[3]; + + unsigned char *pucOut = output; + + while (in_len-- && ( encoded_string->Data()[in_] != L'=') && is_base64(encoded_string->Data()[in_])) + { + char_array_4[i++] = (unsigned char)(encoded_string->Data()[in_]); + in_++; + if (i ==4) + { + for (i = 0; i <4; i++) + { + char_array_4[i] = (unsigned char )base64_chars.find(char_array_4[i]); + } + + char_array_3[0] = (char_array_4[0] << 2) + ((char_array_4[1] & 0x30) >> 4); + char_array_3[1] = ((char_array_4[1] & 0xf) << 4) + ((char_array_4[2] & 0x3c) >> 2); + char_array_3[2] = ((char_array_4[2] & 0x3) << 6) + char_array_4[3]; + + for (i = 0; (i < 3); i++) + { + *pucOut++ = char_array_3[i]; + if( ( pucOut - output ) >= out_len ) return; + } + i = 0; + } + } + + if(i) + { + for (j = i; j <4; j++) + { + char_array_4[j] = 0; + } + + for (j = 0; j <4; j++) + { + char_array_4[j] = (unsigned char )base64_chars.find(char_array_4[j]); + } + + char_array_3[0] = (char_array_4[0] << 2) + ((char_array_4[1] & 0x30) >> 4); + char_array_3[1] = ((char_array_4[1] & 0xf) << 4) + ((char_array_4[2] & 0x3c) >> 2); + char_array_3[2] = ((char_array_4[2] & 0x3) << 6) + char_array_4[3]; + + for (j = 0; (j < i - 1); j++) + { + *pucOut++ = char_array_3[j]; + if( ( pucOut - output ) >= out_len ) return; + } + } +}
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