SECItem *
NSS_CMSContentInfo_GetInnerContent(NSSCMSContentInfo *cinfo)
{
NSSCMSContentInfo *ccinfo;
SECOidTag tag;
SECItem *pItem = NULL;
if (cinfo == NULL) {
return NULL;
}
tag = NSS_CMSContentInfo_GetContentTypeTag(cinfo);
if (NSS_CMSType_IsData(tag)) {
pItem = cinfo->content.data;
} else if (NSS_CMSType_IsWrapper(tag)) {
ccinfo = NSS_CMSContentInfo_GetChildContentInfo(cinfo);
if (ccinfo != NULL) {
pItem = NSS_CMSContentInfo_GetContent(ccinfo);
}
} else {
PORT_Assert(0);
}
return pItem;
}
/*
* NSS_CMSDigestedData_Encode_BeforeStart - do all the necessary things to a DigestedData
* before encoding begins.
*
* In particular:
* - set the right version number. The contentInfo's content type must be set up already.
*/
SECStatus
NSS_CMSDigestedData_Encode_BeforeStart(NSSCMSDigestedData *digd)
{
unsigned long version;
SECItem *dummy;
version = NSS_CMS_DIGESTED_DATA_VERSION_DATA;
if (!NSS_CMSType_IsData(NSS_CMSContentInfo_GetContentTypeTag(
&(digd->contentInfo))))
version = NSS_CMS_DIGESTED_DATA_VERSION_ENCAP;
dummy = SEC_ASN1EncodeInteger(digd->cmsg->poolp, &(digd->version), version);
return (dummy == NULL) ? SECFailure : SECSuccess;
}
/*
* NSS_CMSMessage_ContainsCertsOrCrls - see if message contains certs along the way
*/
PRBool
NSS_CMSMessage_ContainsCertsOrCrls(NSSCMSMessage *cmsg)
{
NSSCMSContentInfo *cinfo;
/* descend into CMS message */
for (cinfo = &(cmsg->contentInfo); cinfo != NULL; cinfo = NSS_CMSContentInfo_GetChildContentInfo(cinfo)) {
if (!NSS_CMSType_IsData(NSS_CMSContentInfo_GetContentTypeTag(cinfo)))
continue; /* next level */
if (NSS_CMSSignedData_ContainsCertsOrCrls(cinfo->content.signedData))
return PR_TRUE;
/* callback here for generic wrappers? */
}
return PR_FALSE;
}
/*
* NSS_CMSContentInfo_GetContent - get pointer to inner content
*
* needs to be casted...
*/
void *
NSS_CMSContentInfo_GetContent(NSSCMSContentInfo *cinfo)
{
if (cinfo == NULL) {
return NULL;
}
SECOidTag tag = cinfo->contentTypeTag
? cinfo->contentTypeTag->offset
: SEC_OID_UNKNOWN;
switch (tag) {
case SEC_OID_PKCS7_DATA:
case SEC_OID_PKCS7_SIGNED_DATA:
case SEC_OID_PKCS7_ENVELOPED_DATA:
case SEC_OID_PKCS7_DIGESTED_DATA:
case SEC_OID_PKCS7_ENCRYPTED_DATA:
return cinfo->content.pointer;
default:
return NSS_CMSType_IsWrapper(tag) ? cinfo->content.pointer
: (NSS_CMSType_IsData(tag) ? cinfo->rawContent
: NULL);
}
}
/*
* NSS_CMSContentInfo_SetContent - set content type & content
*/
SECStatus
NSS_CMSContentInfo_SetContent(NSSCMSMessage *cmsg, NSSCMSContentInfo *cinfo,
SECOidTag type, void *ptr)
{
SECStatus rv;
if (cinfo == NULL || cmsg == NULL) {
return SECFailure;
}
cinfo->contentTypeTag = SECOID_FindOIDByTag(type);
if (cinfo->contentTypeTag == NULL) {
return SECFailure;
}
/* do not copy the oid, just create a reference */
rv = SECITEM_CopyItem(cmsg->poolp, &(cinfo->contentType), &(cinfo->contentTypeTag->oid));
if (rv != SECSuccess) {
return SECFailure;
}
cinfo->content.pointer = ptr;
if (NSS_CMSType_IsData(type) && ptr) {
cinfo->rawContent = ptr;
} else {
/* as we always have some inner data,
* we need to set it to something, just to fool the encoder enough to work on it
* and get us into nss_cms_encoder_notify at that point */
cinfo->rawContent = SECITEM_AllocItem(cmsg->poolp, NULL, 1);
if (cinfo->rawContent == NULL) {
PORT_SetError(SEC_ERROR_NO_MEMORY);
return SECFailure;
}
}
return SECSuccess;
}
