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sanitized pcp_unpadfour(), just return the number of zero padding, leave the input pointer untouched; fixed header

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This commit is contained in:
TLINDEN
2014-02-10 08:46:52 +01:00
parent 91f94a532e
commit ab03a10340
2 changed files with 6 additions and 8 deletions
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4
include/pcp/z85.h
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@@ -30,10 +30,10 @@
/* convert a binary stream to one which gets accepted by zmq_z85_encode */
/* we pad it with zeroes and put the number of zerores in front of it */
unsigned char *pcp_unpadfour(unsigned char *src, size_t srclen, size_t *dstlen);
unsigned char *pcp_padfour(unsigned char *src, size_t srclen, size_t *dstlen);
/* the reverse of the above */
unsigned char *pcp_unpadfour(unsigned char *src, size_t srclen, size_t *dstlen);
size_t pcp_unpadfour(unsigned char *src, size_t srclen);
/* wrapper around zmq Z85 encoding function */
unsigned char *pcp_z85_decode(char *z85block, size_t *dstlen);

10
libpcp/z85.c
View File

@@ -39,7 +39,7 @@ unsigned char *pcp_padfour(unsigned char *src, size_t srclen, size_t *dstlen) {
return dst;
}
unsigned char *pcp_unpadfour(unsigned char *src, size_t srclen, size_t *dstlen) {
size_t pcp_unpadfour(unsigned char *src, size_t srclen) {
size_t outlen;
size_t i;
@@ -52,13 +52,11 @@ unsigned char *pcp_unpadfour(unsigned char *src, size_t srclen, size_t *dstlen)
}
}
*dstlen = outlen;
return src;
return outlen;
}
unsigned char *pcp_z85_decode(char *z85block, size_t *dstlen) {
unsigned char *bin = NULL;
unsigned char *raw = NULL;
size_t binlen, outlen;
binlen = strlen(z85block) * 4 / 5;
@@ -69,11 +67,11 @@ unsigned char *pcp_z85_decode(char *z85block, size_t *dstlen) {
return NULL;
}
raw = pcp_unpadfour(bin, binlen, &outlen);
outlen = pcp_unpadfour(bin, binlen);
*dstlen = outlen;
return raw;
return bin;
}
char *pcp_z85_encode(unsigned char *raw, size_t srclen, size_t *dstlen) {