From 3998a1f8f98c9d95a4b91b7a95612c6313081279 Mon Sep 17 00:00:00 2001
From: Loic Blot <loic.blot@unix-experience.fr>
Date: Sat, 21 Feb 2015 13:00:57 +0100
Subject: Move sha1.hpp and base64.hpp to util/

---
 src/util/base64.cpp | 131 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 131 insertions(+)
 create mode 100644 src/util/base64.cpp

(limited to 'src/util/base64.cpp')

diff --git a/src/util/base64.cpp b/src/util/base64.cpp
new file mode 100644
index 000000000..e14de7de2
--- /dev/null
+++ b/src/util/base64.cpp
@@ -0,0 +1,131 @@
+/*
+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 "base64.h"
+#include <iostream>
+
+static const std::string base64_chars =
+		"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
+		"abcdefghijklmnopqrstuvwxyz"
+		"0123456789+/";
+
+
+static inline bool is_base64(unsigned char c) {
+	return (isalnum(c) || (c == '+') || (c == '/'));
+}
+
+bool base64_is_valid(std::string const& s)
+{
+	for(size_t i=0; i<s.size(); i++)
+		if(!is_base64(s[i])) return false;
+	return true;
+}
+
+std::string base64_encode(unsigned char const* bytes_to_encode, unsigned int in_len) {
+	std::string 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++] = *(bytes_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(i = 0; (i <4) ; i++)
+				ret += base64_chars[char_array_4[i]];
+			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]];
+
+	// Don't pad it with =
+		/*while((i++ < 3))
+			ret += '=';*/
+
+	}
+
+	return ret;
+
+}
+
+std::string base64_decode(std::string const& encoded_string) {
+	int in_len = encoded_string.size();
+	int i = 0;
+	int j = 0;
+	int in_ = 0;
+	unsigned char char_array_4[4], char_array_3[3];
+	std::string ret;
+
+	while (in_len-- && ( encoded_string[in_] != '=') && is_base64(encoded_string[in_])) {
+		char_array_4[i++] = encoded_string[in_]; in_++;
+		if (i ==4) {
+			for (i = 0; i <4; i++)
+				char_array_4[i] = 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++)
+				ret += char_array_3[i];
+			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] = 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++) ret += char_array_3[j];
+	}
+
+	return ret;
+}
-- 
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