libmicrohttpd

commit 727317991143c239b0eaeb5850a60005db6b11f5
parent 3e0f54c48053aa2af19532ee50157f89e06fd6af
Author: Christian Grothoff <christian@grothoff.org>
Date:   Sun, 26 Dec 2010 01:16:47 +0000

oops

Diffstat:
A
src/daemon/base64.c
 | 
86
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
A
src/daemon/base64.h
 | 
9
+++++++++

2 files changed, 95 insertions(+), 0 deletions(-)
diff --git a/src/daemon/base64.c b/src/daemon/base64.c
@@ -0,0 +1,86 @@
+/*
+ * This code implements the BASE64 algorithm.
+ * This code is in the public domain; do with it what you wish.
+ *
+ * @file base64.c
+ * @brief This code implements the BASE64 algorithm
+ * @author Matthieu Speder
+ */
+
+#include <memory.h>
+#include <stdlib.h>
+#include "base64.h"
+
+static const char base64_chars[] =
+		"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
+
+static const char base64_digits[] = { 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, -1, 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, 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, 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, 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 };
+
+char* BASE64Encode(const char* src) {
+	unsigned int in_len = strlen(src);
+	char* dest = (char*)malloc((in_len + 2 - ((in_len + 2) % 3)) / 3 * 4 + 1);
+	char* result = dest;
+
+	while (*src) {
+		dest[0] = base64_chars[(src[0] & 0xfc) >> 2];
+		dest[1] = base64_chars[((src[0] & 0x03) << 4) + ((src[1] & 0xf0) >> 4)];
+		dest[2] = base64_chars[((src[1] & 0x0f) << 2) + ((src[2] & 0xc0) >> 6)];
+		dest[3] = base64_chars[src[2] & 0x3f];
+		if (!*(++src)) {
+			dest[2] = dest[3] = '=';
+			dest[4] = 0;
+			return result;
+		}
+		if (!*(++src)) {
+			dest[3] = '=';
+			dest[4] = 0;
+			return result;
+		}
+		src++;
+		dest += 4;
+	}
+	*dest = 0;
+	return result;
+
+}
+
+char* BASE64Decode(const char* src) {
+	unsigned int in_len = strlen(src);
+	char* dest;
+	char* result;
+
+	if (in_len % 4) {
+		/* Wrong base64 string length */
+		return NULL;
+	}
+	result = dest = (char*) malloc(in_len / 4 * 3 + 1);
+
+	while (*src) {
+		char a = base64_digits[(unsigned char)*(src++)];
+		char b = base64_digits[(unsigned char)*(src++)];
+		char c = base64_digits[(unsigned char)*(src++)];
+		char d = base64_digits[(unsigned char)*(src++)];
+		*(dest++) = (a << 2) | ((b & 0x30) >> 4);
+		if (c == -1)
+			break;
+		*(dest++) = ((b & 0x0f) << 4) | ((c & 0x3c) >> 2);
+		if (d == -1)
+			break;
+		*(dest++) = ((c & 0x03) << 6) | d;
+	}
+	*dest = 0;
+	return result;
+}
+
+/* end of base64.c */
diff --git a/src/daemon/base64.h b/src/daemon/base64.h
@@ -0,0 +1,9 @@
+#ifndef BASE64_H
+#define BASE64_H
+
+#include "MHD_config.h"
+
+char* BASE64Encode(const char* src);
+char* BASE64Decode(const char* src);
+
+#endif /* !BASE64_H */