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/** \ingroup signature
* \file rpmio/digest.c
*/
#include "system.h"
#include "rpmio/digest.h"
#include "debug.h"
#define DIGESTS_MAX 11
struct rpmDigestBundle_s {
int index_min; /*!< Smallest index of active digest */
int index_max; /*!< Largest index of active digest */
off_t nbytes; /*!< Length of total input data */
DIGEST_CTX digests[DIGESTS_MAX]; /*!< Digest contexts indexed by algo */
};
rpmDigestBundle rpmDigestBundleNew(void)
{
rpmDigestBundle bundle = xcalloc(1, sizeof(*bundle));
return bundle;
}
rpmDigestBundle rpmDigestBundleFree(rpmDigestBundle bundle)
{
if (bundle) {
for (int i = bundle->index_min; 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)
{
DIGEST_CTX ctx = NULL;
if (bundle && algo > 0 && algo < DIGESTS_MAX) {
if (bundle->digests[algo] == NULL) {
ctx = rpmDigestInit(algo, flags);
if (ctx) {
bundle->digests[algo] = ctx;
if (algo < bundle->index_min) {
bundle->index_min = algo;
}
if (algo > bundle->index_max) {
bundle->index_max = algo;
}
}
}
}
return (ctx != NULL);
}
int rpmDigestBundleUpdate(rpmDigestBundle bundle, const void *data, size_t len)
{
int rc = 0;
if (bundle && data && len > 0) {
for (int i = bundle->index_min; i <= bundle->index_max; i++) {
DIGEST_CTX ctx = bundle->digests[i];
if (ctx == NULL)
continue;
rc += rpmDigestUpdate(ctx, data, len);
}
bundle->nbytes += len;
}
return rc;
}
int rpmDigestBundleFinal(rpmDigestBundle bundle,
int algo, void ** datap, size_t * lenp, int asAscii)
{
int rc = 0;
if (bundle && algo >= bundle->index_min && algo <= bundle->index_max) {
rc = rpmDigestFinal(bundle->digests[algo], datap, lenp, asAscii);
bundle->digests[algo] = NULL;
}
return rc;
}
DIGEST_CTX rpmDigestBundleDupCtx(rpmDigestBundle bundle, int algo)
{
DIGEST_CTX dup = NULL;
if (bundle && algo >= bundle->index_min && algo <= bundle->index_max) {
dup = rpmDigestDup(bundle->digests[algo]);
}
return dup;
}
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