pgpDig rpmPubkeyDig(rpmPubkey key)
{
pgpDig dig = NULL;
static unsigned char zeros[] =
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
int rc;
if (key == NULL)
return NULL;
dig = pgpNewDig();
rc = pgpPrtPkts(key->pkt, key->pktlen, dig, 0);
if (rc == 0) {
pgpDigParams pubp = pgpDigGetParams(dig, PGPTAG_PUBLIC_KEY);
if (!pubp || !memcmp(pubp->signid, zeros, sizeof(pubp->signid)) ||
!memcmp(pubp->time, zeros, sizeof(pubp->time)) ||
pubp->userid == NULL) {
rc = -1;
}
}
if (rc)
dig = pgpFreeDig(dig);
return dig;
}
rpmRC rpmKeyringLookup(rpmKeyring keyring, pgpDig sig)
{
rpmRC res = RPMRC_NOKEY;
pgpDigParams sigp = pgpDigGetParams(sig, PGPTAG_SIGNATURE);
rpmPubkey key = findbySig(keyring, sigp);
if (key) {
/*
* Callers expect sig to have the key data parsed into pgpDig
* on (successful) return, sigh. No need to check for return
* here as this is validated at rpmPubkeyNew() already.
*/
pgpPrtPkts(key->pkt, key->pktlen, sig, 0);
res = RPMRC_OK;
}
return res;
}
/* Build pubkey header. */
static int makePubkeyHeader(rpmts ts, rpmPubkey key, Header * hdrp)
{
Header h = headerNew();
const char * afmt = "%{pubkeys:armor}";
const char * group = "Public Keys";
const char * license = "pubkey";
const char * buildhost = "localhost";
const char * userid;
rpmsenseFlags pflags = (RPMSENSE_KEYRING|RPMSENSE_EQUAL);
uint32_t zero = 0;
uint32_t keytime = 0;
pgpDig dig = NULL;
pgpDigParams pubp = NULL;
char * d = NULL;
char * enc = NULL;
char * n = NULL;
char * u = NULL;
char * v = NULL;
char * r = NULL;
char * evr = NULL;
int rc = -1;
if ((enc = rpmPubkeyBase64(key)) == NULL)
goto exit;
if ((dig = rpmPubkeyDig(key)) == NULL)
goto exit;
if ((pubp = pgpDigGetParams(dig, PGPTAG_PUBLIC_KEY)) == NULL)
goto exit;
/* Build header elements. */
v = pgpHexStr(pubp->signid, sizeof(pubp->signid));
r = pgpHexStr(pubp->time, sizeof(pubp->time));
userid = pubp->userid ? pubp->userid : "none";
keytime = pgpGrab(pubp->time, sizeof(pubp->time));
rasprintf(&n, "gpg(%s)", v+8);
rasprintf(&u, "gpg(%s)", userid);
rasprintf(&evr, "%d:%s-%s", pubp->version, v, r);
headerPutString(h, RPMTAG_PUBKEYS, enc);
if ((d = headerFormat(h, afmt, NULL)) == NULL)
goto exit;
headerPutString(h, RPMTAG_NAME, "gpg-pubkey");
headerPutString(h, RPMTAG_VERSION, v+8);
headerPutString(h, RPMTAG_RELEASE, r);
headerPutString(h, RPMTAG_DESCRIPTION, d);
headerPutString(h, RPMTAG_GROUP, group);
headerPutString(h, RPMTAG_LICENSE, license);
headerPutString(h, RPMTAG_SUMMARY, u);
headerPutString(h, RPMTAG_PACKAGER, userid);
headerPutUint32(h, RPMTAG_SIZE, &zero, 1);
headerPutString(h, RPMTAG_PROVIDENAME, u);
headerPutString(h, RPMTAG_PROVIDEVERSION, evr);
headerPutUint32(h, RPMTAG_PROVIDEFLAGS, &pflags, 1);
headerPutString(h, RPMTAG_PROVIDENAME, n);
headerPutString(h, RPMTAG_PROVIDEVERSION, evr);
headerPutUint32(h, RPMTAG_PROVIDEFLAGS, &pflags, 1);
headerPutString(h, RPMTAG_RPMVERSION, RPMVERSION);
headerPutString(h, RPMTAG_BUILDHOST, buildhost);
headerPutUint32(h, RPMTAG_BUILDTIME, &keytime, 1);
headerPutString(h, RPMTAG_SOURCERPM, "(none)");
/* Reload the lot to immutable region and stomp sha1 digest on it */
h = headerReload(h, RPMTAG_HEADERIMMUTABLE);
if (h != NULL) {
char *sha1 = NULL;
unsigned int blen = 0;
const void *blob = headerExport(h, &blen);
/* XXX FIXME: bah, this code is repeated in way too many places */
DIGEST_CTX ctx = rpmDigestInit(PGPHASHALGO_SHA1, RPMDIGEST_NONE);
rpmDigestUpdate(ctx, rpm_header_magic, sizeof(rpm_header_magic));
rpmDigestUpdate(ctx, blob, blen);
rpmDigestFinal(ctx, (void **)&sha1, NULL, 1);
if (sha1) {
headerPutString(h, RPMTAG_SHA1HEADER, sha1);
*hdrp = headerLink(h);
rc = 0;
}
free(sha1);
}
exit:
headerFree(h);
pgpFreeDig(dig);
free(n);
free(u);
free(v);
free(r);
free(evr);
free(enc);
free(d);
return rc;
}
