static rpmRC rpmpkgReadHeader(FD_t fd, Header *hdrp, char ** msg)
{
char *buf = NULL;
struct hdrblob_s blob;
Header h = NULL;
rpmRC rc = RPMRC_FAIL; /* assume failure */
if (hdrp)
*hdrp = NULL;
if (msg)
*msg = NULL;
if (hdrblobRead(fd, 1, 1, RPMTAG_HEADERIMMUTABLE, &blob, &buf) != RPMRC_OK)
goto exit;
/* OK, blob looks sane, load the header. */
rc = hdrblobImport(&blob, 0, &h, &buf);
exit:
if (hdrp && h && rc == RPMRC_OK)
*hdrp = headerLink(h);
headerFree(h);
if (msg != NULL && *msg == NULL && buf != NULL) {
*msg = buf;
} else {
free(buf);
}
return rc;
}
rpmRC rpmReadSignature(FD_t fd, Header * sighp, char ** msg)
{
char *buf = NULL;
struct hdrblob_s blob;
Header sigh = NULL;
rpmRC rc = RPMRC_FAIL; /* assume failure */
if (sighp)
*sighp = NULL;
if (hdrblobRead(fd, 1, 1, RPMTAG_HEADERSIGNATURES, &blob, &buf) != RPMRC_OK)
goto exit;
/* OK, blob looks sane, load the header. */
if (hdrblobImport(&blob, 0, &sigh, &buf) != RPMRC_OK)
goto exit;
printSize(fd, sigh);
rc = RPMRC_OK;
exit:
if (sighp && sigh && rc == RPMRC_OK)
*sighp = headerLink(sigh);
headerFree(sigh);
if (msg != NULL) {
*msg = buf;
} else {
free(buf);
}
return rc;
}
rpmRC rpmpkgRead(rpmKeyring keyring, rpmVSFlags flags, FD_t fd,
rpmsinfoCb cb, void *cbdata, Header *hdrp)
{
char * msg = NULL;
rpmRC xx, rc = RPMRC_FAIL; /* assume failure */
int failed = 0;
int leadtype = -1;
struct hdrblob_s sigblob, blob;
struct rpmvs_s *sigset = NULL;
Header h = NULL;
Header sigh = NULL;
rpmDigestBundle bundle = fdGetBundle(fd, 1); /* freed with fd */
memset(&blob, 0, sizeof(blob));
memset(&sigblob, 0, sizeof(sigblob));
if ((xx = rpmLeadRead(fd, &leadtype, &msg)) != RPMRC_OK) {
/* Avoid message spew on manifests */
if (xx == RPMRC_NOTFOUND)
msg = _free(msg);
rc = xx;
goto exit;
}
/* Read the signature header. Might not be in a contiguous region. */
if (hdrblobRead(fd, 1, 0, RPMTAG_HEADERSIGNATURES, &sigblob, &msg))
goto exit;
sigset = rpmvsCreate(&sigblob, flags);
/* Initialize digests ranging over the header */
rpmvsInitDigests(sigset, RPMSIG_HEADER, bundle);
/* Read the header from the package. */
if (hdrblobRead(fd, 1, 1, RPMTAG_HEADERIMMUTABLE, &blob, &msg))
goto exit;
/* Fish interesting tags from the main header. This is a bit hacky... */
if (!(flags & (RPMVSF_NOPAYLOAD|RPMVSF_NEEDPAYLOAD)))
rpmvsAppend(sigset, &blob, RPMTAG_PAYLOADDIGEST);
/* Initialize digests ranging over the payload only */
rpmvsInitDigests(sigset, RPMSIG_PAYLOAD, bundle);
/* Verify header signatures and digests */
failed += rpmvsVerifyItems(sigset, (RPMSIG_HEADER), bundle, keyring, cb, cbdata);
/* Unless disabled, read the file, generating digest(s) on the fly. */
if (!(flags & RPMVSF_NEEDPAYLOAD)) {
if (readFile(fd, &msg))
goto exit;
}
/* Verify signatures and digests ranging over the payload */
failed += rpmvsVerifyItems(sigset, (RPMSIG_PAYLOAD), bundle,
keyring, cb, cbdata);
failed += rpmvsVerifyItems(sigset, (RPMSIG_HEADER|RPMSIG_PAYLOAD), bundle,
keyring, cb, cbdata);
if (failed == 0) {
/* Finally import the headers and do whatever required retrofits etc */
if (hdrp) {
if (hdrblobImport(&sigblob, 0, &sigh, &msg))
goto exit;
if (hdrblobImport(&blob, 0, &h, &msg))
goto exit;
/* Append (and remap) signature tags to the metadata. */
headerMergeLegacySigs(h, sigh);
applyRetrofits(h, leadtype);
/* Bump reference count for return. */
*hdrp = headerLink(h);
}
rc = RPMRC_OK;
}
exit:
if (rc && msg != NULL)
rpmlog(RPMLOG_ERR, "%s: %s\n", Fdescr(fd), msg);
free(msg);
free(sigblob.ei);
free(blob.ei);
headerFree(h);
headerFree(sigh);
rpmvsFree(sigset);
return rc;
}
