diff options
Diffstat (limited to 'src/mir_core/utils.cpp')
| -rw-r--r-- | src/mir_core/utils.cpp | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/src/mir_core/utils.cpp b/src/mir_core/utils.cpp index 21c9e8dfd5..02593de4fa 100644 --- a/src/mir_core/utils.cpp +++ b/src/mir_core/utils.cpp @@ -212,3 +212,106 @@ MIR_CORE_DLL(int) wildcmpiw(const WCHAR *name, const WCHAR *mask) if (*mask != '?' && _qtoupper(*mask) != _qtoupper(*name)) name -= (size_t)(mask - last) - 1, mask = last;
}
}
+
+/////////////////////////////////////////////////////////////////////////////////////////
+
+MIR_CORE_DLL(char*) mir_base64_encode(const BYTE *input, unsigned inputLen)
+{
+ if (input == NULL)
+ return NULL;
+
+ size_t i = 0;
+ char chr[3], enc[4];
+ static char cb64[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
+
+ size_t length = inputLen;
+ size_t nLength = 4 * ((length + 2) / 3) + 1;
+
+ char *output = (char *)mir_alloc(nLength);
+ char *p = output;
+
+ while (i < length)
+ {
+ chr[0] = input[i++];
+ chr[1] = input[i++];
+ chr[2] = input[i++];
+
+ 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;
+
+ *p++ = cb64[enc[0]]; *p++ = cb64[enc[1]];
+
+ if (i - 2 >= length) { *p++ = '='; *p++ = '='; }
+ else if (i - 1 >= length) { *p++ = cb64[enc[2]]; *p++ = '='; }
+ else { *p++ = cb64[enc[2]]; *p++ = cb64[enc[3]]; }
+ }
+
+ *p = 0;
+
+ return output;
+}
+
+/////////////////////////////////////////////////////////////////////////////////////////
+
+static int Base64DecodeTable[] =
+{
+ -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
+};
+
+MIR_CORE_DLL(void*) mir_base64_decode(const char *input, unsigned *outputLen)
+{
+ if (input == NULL)
+ return NULL;
+
+ size_t i = 0;
+ char chr[3], enc[4];
+
+ size_t length = strlen(input);
+ size_t nLength = (length / 4) * 3 + 1;
+
+ char *output = (char *)mir_alloc(nLength);
+ char *p = output;
+
+ while (i < length)
+ {
+ enc[0] = Base64DecodeTable[input[i++]];
+ enc[1] = Base64DecodeTable[input[i++]];
+ enc[2] = Base64DecodeTable[input[i++]];
+ enc[3] = Base64DecodeTable[input[i++]];
+
+ 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];
+
+ *p++ = chr[0];
+
+ if (enc[2] != -1) *p++ = chr[1];
+ if (enc[3] != -1) *p++ = chr[2];
+ }
+
+ *p = 0;
+
+ if (outputLen != NULL)
+ *outputLen = (unsigned)nLength;
+
+ return output;
+}
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