| */␊ |
| #include <libsaio.h>␊ |
| ␊ |
| static const char base64_chars[] =␊ |
| "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";␊ |
| //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,␊ |
|
| ␊ |
| char *BASE64Decode(const char* src, int in_len, int* out_len)␊ |
| {␊ |
| int endpad = 0;␊ |
| char* dest;␊ |
| char* result;␊ |
| ␊ |
|
| {␊ |
| /* Wrong base64 string length */␊ |
| return NULL;␊ |
| }␊ |
| ␊ |
| } ␊ |
| result = dest = malloc(in_len / 4 * 3 + 1);␊ |
| if (result == NULL)␊ |
| return NULL; /* out of memory */␊ |
|
| char d = base64_digits[(unsigned char)*(src++)];␊ |
| *(dest++) = (a << 2) | ((b & 0x30) >> 4);␊ |
| if (c == (char)-1)␊ |
| {␊ |
| // padding char.␊ |
| endpad += 2;␊ |
| break;␊ |
| }␊ |
| *(dest++) = ((b & 0x0f) << 4) | ((c & 0x3c) >> 2);␊ |
| if (d == (char)-1)␊ |
| {␊ |
| // padding char.␊ |
| endpad += 1;␊ |
| break;␊ |
| }␊ |
| *(dest++) = ((c & 0x03) << 6) | d;␊ |
| }␊ |
| *dest = 0;␊ |
| *out_len = in_len / 4 * 3; // not including NULL terminator␊ |
| *out_len = in_len / 4 * 3 - endpad; // not including NULL terminator␊ |
| return result;␊ |
| }␊ |
| ␊ |
