diff options
Diffstat (limited to 'protocols/Skype/src/base64')
| -rw-r--r-- | protocols/Skype/src/base64/base64.cpp | 101 | ||||
| -rw-r--r-- | protocols/Skype/src/base64/base64.h | 12 |
2 files changed, 113 insertions, 0 deletions
diff --git a/protocols/Skype/src/base64/base64.cpp b/protocols/Skype/src/base64/base64.cpp new file mode 100644 index 0000000000..d5d1558e50 --- /dev/null +++ b/protocols/Skype/src/base64/base64.cpp @@ -0,0 +1,101 @@ +#include "base64.h"
+
+char Base64::CharBase64[] =
+{
+ 'A','B','C','D','E','F','G','H','I','J','K','L','M ','N','O','P',
+ 'Q','R','S','T','U','V','W','X','Y','Z','a','b','c ','d','e','f',
+ 'g','h','i','j','k','l','m','n','o','p','q','r','s ','t','u','v',
+ 'w','x','y','z','0','1','2','3','4','5','6','7','8 ','9','+','/'
+};
+
+ULONG Base64::Encode(const char *inputString, char *outputBuffer, SIZE_T nMaxLength)
+{
+ int outpos = 0;
+ char chr[3], enc[4];
+
+ for (unsigned int i = 0; i < ::strlen(inputString); i += 3)
+ {
+ if (outpos + 4 >= nMaxLength)break;
+
+ chr[0] = inputString[i];
+ chr[1] = inputString[i+1];
+ chr[2] = inputString[i+2];
+
+ enc[0] = chr[0] >> 2;
+ enc[1] = ((chr[0] & 0x03) << 4) | (chr[1] >> 4);
+ enc[2] = ((chr[1] & 0x0F) << 2) | (chr[2] >> 6);
+ enc[3] = chr[2] & 0x3F;
+
+ outputBuffer[outpos++] = Base64::CharBase64[enc[0]];
+ outputBuffer[outpos++] = Base64::CharBase64[enc[1]];
+
+ if (i + 1 >= ::strlen(inputString))
+ {
+ outputBuffer[outpos++] = '=';
+ outputBuffer[outpos++] = '=';
+ }
+ else if (i + 2 >= ::strlen(inputString))
+ {
+ outputBuffer[outpos++] = Base64::CharBase64[enc[2]];
+ outputBuffer[outpos++] = '=';
+ }
+ else
+ {
+ outputBuffer[outpos++] = Base64::CharBase64[enc[2]];
+ outputBuffer[outpos++] = Base64::CharBase64[enc[3]];
+ }
+ }
+
+ outputBuffer[outpos] = 0;
+ return outpos;
+}
+
+int Base64::IndexBase64[] =
+{
+ -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,
+ -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,
+ -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,62, -1,-1,-1,63,
+ 52,53,54,55, 56,57,58,59, 60,61,-1,-1, -1,-1,-1,-1,
+ -1, 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,-1, -1,-1,-1,-1,
+ -1,26,27,28, 29,30,31,32, 33,34,35,36, 37,38,39,40,
+ 41,42,43,44, 45,46,47,48, 49,50,51,-1, -1,-1,-1,-1,
+ -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,
+ -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,
+ -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,
+ -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,
+ -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,
+ -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,
+ -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,
+ -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1
+};
+
+ULONG Base64::Decode(const char *inputString, char *outputBuffer, SIZE_T nMaxLength)
+{
+ int outpos = 0;
+ char chr[3], enc[4];
+
+ for (int i = 0; i < ::strlen(inputString); i += 4)
+ {
+ if (outpos+3 >= nMaxLength) break;
+
+ enc[0] = Base64::IndexBase64[inputString[i]];
+ enc[1] = Base64::IndexBase64[inputString[i+1]];
+ enc[2] = Base64::IndexBase64[inputString[i+2]];
+ enc[3] = Base64::IndexBase64[inputString[i+3]];
+
+ if (enc[0] == -1 || enc[1] == -1) break;
+
+ chr[0] = (enc[0] << 2) | (enc[1] >> 4);
+ chr[1] = ((enc[1] & 15) << 4) | (enc[2] >> 2);
+ chr[2] = ((enc[2] & 3) << 6) | enc[3];
+
+ outputBuffer[outpos++] = chr[0];
+
+ if (enc[2] != -1) outputBuffer[outpos++] = chr[1];
+ if (enc[3] != -1) outputBuffer[outpos++] = chr[2];
+ }
+
+ outputBuffer[outpos] = 0;
+ return outpos;
+}
\ No newline at end of file diff --git a/protocols/Skype/src/base64/base64.h b/protocols/Skype/src/base64/base64.h new file mode 100644 index 0000000000..9406df7a8f --- /dev/null +++ b/protocols/Skype/src/base64/base64.h @@ -0,0 +1,12 @@ +#include <windows.h>
+
+class Base64
+{
+private:
+ static char CharBase64[];
+ static int IndexBase64[];
+
+public:
+ static ULONG Encode(const char *inputString, char *outputBuffer, SIZE_T nMaxLength);
+ static ULONG Decode(const char *inputString, char *outputBuffer, SIZE_T nMaxLength);
+};
\ No newline at end of file |