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do only pad if ! %4

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git@daemon.de
2014-07-29 13:01:14 +02:00
parent ffaf37614a
commit c8317a348e
1 changed files with 13 additions and 3 deletions
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16
libpcp/z85.c
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@@ -212,10 +212,18 @@ byte *pcp_z85_decode(PCPCTX *ptx, char *z85block, size_t *dstlen) {
char *pcp_z85_encode(byte *raw, size_t srclen, size_t *dstlen) { char *pcp_z85_encode(byte *raw, size_t srclen, size_t *dstlen) {
int pos = 0; int pos = 0;
byte *padded;
size_t outlen, blocklen, zlen; size_t outlen, blocklen, zlen;
/* make z85 happy (size % 4) */ if(srclen %4 == 0) {
byte *padded = pcp_padfour(raw, srclen, &outlen); /* no padding required */
padded = raw;
outlen = srclen;
}
else {
/* make z85 happy (size % 4) */
padded = pcp_padfour(raw, srclen, &outlen);
}
/* encode to z85 */ /* encode to z85 */
zlen = (outlen * 5 / 4) + 1; zlen = (outlen * 5 / 4) + 1;
@@ -245,7 +253,9 @@ char *pcp_z85_encode(byte *raw, size_t srclen, size_t *dstlen) {
*dstlen = blocklen; *dstlen = blocklen;
free(z85); free(z85);
free(padded);
if(srclen %4 != 0)
free(padded);
return z85block; return z85block;
} }