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