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/** \ingroup signature
* \file rpmio/digest.c
*/
#include "system.h"
#include "rpmio/digest.h"
#include "debug.h"
#define DIGESTS_MAX 12
struct rpmDigestBundle_s {
int index_max; /*!< Largest index of active digest */
off_t nbytes; /*!< Length of total input data */
DIGEST_CTX digests[DIGESTS_MAX]; /*!< Digest contexts identified by id */
int ids[DIGESTS_MAX]; /*!< Digest ID (arbitrary non-zero) */
};
static int findID(rpmDigestBundle bundle, int id)
{
int ix = -1;
if (bundle) {
for (int i = 0; i < DIGESTS_MAX; i++) {
if (bundle->ids[i] == id) {
ix = i;
break;
}
}
}
return ix;
}
rpmDigestBundle rpmDigestBundleNew(void)
{
rpmDigestBundle bundle = xcalloc(1, sizeof(*bundle));
return bundle;
}
rpmDigestBundle rpmDigestBundleFree(rpmDigestBundle bundle)
{
if (bundle) {
for (int i = 0; i <= bundle->index_max ; i++) {
if (bundle->digests[i] == NULL)
continue;
rpmDigestFinal(bundle->digests[i], NULL, NULL, 0);
bundle->digests[i] = NULL;
}
memset(bundle, 0, sizeof(*bundle));
free(bundle);
}
return NULL;
}
int rpmDigestBundleAdd(rpmDigestBundle bundle, int algo,
rpmDigestFlags flags)
{
return rpmDigestBundleAddID(bundle, algo, algo, flags);
}
int rpmDigestBundleAddID(rpmDigestBundle bundle, int algo, int id,
rpmDigestFlags flags)
{
int rc = -1;
if (id > 0 && findID(bundle, id) < 0) {
int ix = findID(bundle, 0); /* Find first free slot */
if (ix >= 0) {
bundle->digests[ix] = rpmDigestInit(algo, flags);
if (bundle->digests[ix]) {
bundle->ids[ix]= id;
if (ix > bundle->index_max)
bundle->index_max = ix;
rc = 0;
}
}
}
return rc;
}
int rpmDigestBundleUpdate(rpmDigestBundle bundle, const void *data, size_t len)
{
int rc = 0;
if (bundle && data && len > 0) {
for (int i = 0; i <= bundle->index_max; i++) {
if (bundle->ids[i] > 0)
rc += rpmDigestUpdate(bundle->digests[i], data, len);
}
bundle->nbytes += len;
}
return rc;
}
int rpmDigestBundleFinal(rpmDigestBundle bundle, int id,
void ** datap, size_t * lenp, int asAscii)
{
int rc = 0;
int ix = findID(bundle, id);
if (ix >= 0) {
rc = rpmDigestFinal(bundle->digests[ix], datap, lenp, asAscii);
bundle->digests[ix] = NULL;
bundle->ids[ix] = 0;
}
return rc;
}
DIGEST_CTX rpmDigestBundleDupCtx(rpmDigestBundle bundle, int id)
{
int ix = findID(bundle, id);
DIGEST_CTX dup = (ix >= 0) ? rpmDigestDup(bundle->digests[ix]) : NULL;
return dup;
}
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