- response.Send();
- }
-
- bool IsBase64(unsigned char c)
- {
- return (isalnum(c) || (c == '+') || (c == '/'));
- }
-
- std::string Base64Decode(const std::string &base64)
- {
- const std::string base64_chars("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/");
- int inputlen = base64.length();
- int i = 0, j = 0, input = 0;
- unsigned char longbuf[4], shortbuf[3];
- std::string retval;
-
- if (inputlen == 0)
- return "";
-
- while (inputlen-- && (base64[input] != '=') && IsBase64(base64[input]))
- {
- longbuf[i++] = base64[input];
- input++;
- if (i == 4)
- {
- for (i = 0; i < 4; ++i)
- longbuf[i] = base64_chars.find(longbuf[i]);
-
- shortbuf[0] = (longbuf[0] << 2) + ((longbuf[1] & 0x30) >> 4);
- shortbuf[1] = ((longbuf[1] & 0xf) << 4) + ((longbuf[2] & 0x3c) >> 2);
- shortbuf[2] = ((longbuf[2] & 0x3) << 6) + longbuf[3];
-
- for (i = 0; i < 3; ++i)
- retval += shortbuf[i];
-
- i = 0;
- }
- }
-
- if (i)
- {
- for (j = i; j < 4; ++j)
- longbuf[j] = 0;
-
- for (j = 0; j < 4; ++j)
- longbuf[j] = base64_chars.find(longbuf[j]);
-
- shortbuf[0] = (longbuf[0] << 2) + ((longbuf[1] & 0x30) >> 4);
- shortbuf[1] = ((longbuf[1] & 0xf) << 4) + ((longbuf[2] & 0x3c) >> 2);
- shortbuf[2] = ((longbuf[2] & 0x3) << 6) + longbuf[3];
-
- for (j = 0; j < i - 1; ++j)
- retval += shortbuf[j];
- }
-
- return retval;