| 65,31 → 65,33 |
|---|
| |
| int base64_decode(char inp[], char outp[], int len) |
| { |
| int i, j, k; |
| int i, j, k, n; |
| char *chr_adr; |
| char chr[4]; |
| |
| for (i = 0, j=-1, k=0; i < len; i+=4) |
| i = 0; |
| j = -1; |
| k = 0; |
| while (i < len) |
| { |
| chr[0] = strchr(base64_table, inp[i]) - base64_table; |
| |
| chr[1] = strchr(base64_table, inp[i+1]) - base64_table; |
| |
| if (inp[i+2] == '=') |
| for (n = 0; n <= 3; n++) |
| { |
| chr[2] = 0; |
| chr[n] = 0; |
| while ((inp[i] <= 0x20) & (i < len)) |
| i++; |
| if (i < len) |
| { |
| if ((n >= 2) & (inp[i] == '=')) |
| k++; |
| } |
| else |
| chr[2] = strchr(base64_table, inp[i+2]) - base64_table; |
| |
| if (inp[i+3] == '=') |
| { |
| chr[3] = 0; |
| k++; |
| chr_adr = strchr(base64_table, inp[i]); |
| if (chr_adr) |
| chr[n] = chr_adr - base64_table; |
| } |
| else |
| chr[3] = strchr(base64_table, inp[i+3]) - base64_table; |
| |
| i++; |
| } |
| } |
| outp[++j] = ((chr[0] << 2) | (chr[1] >> 4)); |
| outp[++j] = ((chr[1] << 4) | (chr[2] >> 2)); |
| outp[++j] = ((chr[2] & 0x03 )<< 6) | (chr[3] & 0x3f); |