-
-#include "real.h"
-
-/*
- * Decodes base64 strings (based upon b64 package)
- */
-
-static char *b64_decode(const char *in, char *out, int *size) {
-
- char dtable[256]; /* Encode / decode table */
- int i,k;
- unsigned int j;
-
- for (i = 0; i < 255; i++) {
- dtable[i] = 0x80;
- }
- for (i = 'A'; i <= 'Z'; i++) {
- dtable[i] = 0 + (i - 'A');
- }
- for (i = 'a'; i <= 'z'; i++) {
- dtable[i] = 26 + (i - 'a');
- }
- for (i = '0'; i <= '9'; i++) {
- dtable[i] = 52 + (i - '0');
- }
- dtable['+'] = 62;
- dtable['/'] = 63;
- dtable['='] = 0;
-
- k=0;
- /*CONSTANTCONDITION*/
- for (j=0; j<strlen(in); j+=4) {
- char a[4], b[4];
-
- for (i = 0; i < 4; i++) {
- int c = in[i+j];
-
- if (dtable[c] & 0x80) {
- printf("Illegal character '%c' in input.\n", c);
- exit(1);
- }
- a[i] = (char) c;
- b[i] = (char) dtable[c];
- }
- //xine_buffer_ensure_size(out, k+3);
- out[k++] = (b[0] << 2) | (b[1] >> 4);
- out[k++] = (b[1] << 4) | (b[2] >> 2);
- out[k++] = (b[2] << 6) | b[3];
- i = a[2] == '=' ? 1 : (a[3] == '=' ? 2 : 3);
- if (i < 3) {
- out[k]=0;
- *size=k;
- return out;
- }
- }
- out[k]=0;
- *size=k;
- return out;
-}