static OSStatus cmsSetupEncoder(
CMSEncoderRef cmsEncoder)
{
OSStatus ortn;
ASSERT(cmsEncoder->arena == NULL);
ASSERT(cmsEncoder->encoder == NULL);
ortn = SecArenaPoolCreate(1024, &cmsEncoder->arena);
if(ortn) {
return cmsRtnToOSStatus(ortn);
}
ortn = SecCmsEncoderCreate(cmsEncoder->cmsMsg,
NULL, NULL, // no callback
&cmsEncoder->encoderOut, // data goes here
cmsEncoder->arena,
NULL, NULL, // no password callback (right?)
NULL, NULL, // decrypt key callback
NULL, NULL, // detached digests
&cmsEncoder->encoder);
if(ortn) {
return cmsRtnToOSStatus(ortn);
}
return errSecSuccess;
}
/*
* Feed raw bytes of the message to be decoded into the decoder. Can be called
* multiple times.
*/
OSStatus CMSDecoderUpdateMessage(
CMSDecoderRef cmsDecoder,
const void *msgBytes,
size_t msgBytesLen)
{
if(cmsDecoder == NULL) {
return errSecParam;
}
OSStatus ortn;
switch(cmsDecoder->decState) {
case DS_Init:
/* First time through; set up */
ASSERT(cmsDecoder->decoder == NULL);
ASSERT(cmsDecoder->arena == NULL);
ortn = SecArenaPoolCreate(1024, &cmsDecoder->arena);
if(ortn) {
return cmsRtnToOSStatus(ortn);
}
ortn = SecCmsDecoderCreate(cmsDecoder->arena,
NULL, NULL, NULL, NULL, NULL, NULL, &cmsDecoder->decoder);
if(ortn) {
ortn = cmsRtnToOSStatus(ortn);
CSSM_PERROR("SecCmsDecoderCreate", ortn);
return ortn;
}
cmsDecoder->decState = DS_Updating;
break;
case DS_Updating:
ASSERT(cmsDecoder->decoder != NULL);
break;
case DS_Final:
/* Too late for another update */
return errSecParam;
default:
dprintf("CMSDecoderUpdateMessage: bad decState\n");
return errSecInternalComponent;
}
/* FIXME - CFIndex same size as size_t on 64bit? */
ortn = SecCmsDecoderUpdate(cmsDecoder->decoder, msgBytes, (CFIndex)msgBytesLen);
if(ortn) {
ortn = cmsRtnToOSStatus(ortn, errSecUnknownFormat);
CSSM_PERROR("SecCmsDecoderUpdate", ortn);
}
return ortn;
}
