diff options
Diffstat (limited to 'security/nss/lib/smime/cmscinfo.c')
| -rw-r--r-- | security/nss/lib/smime/cmscinfo.c | 375 |
1 files changed, 375 insertions, 0 deletions
diff --git a/security/nss/lib/smime/cmscinfo.c b/security/nss/lib/smime/cmscinfo.c new file mode 100644 index 000000000..08db662f8 --- /dev/null +++ b/security/nss/lib/smime/cmscinfo.c @@ -0,0 +1,375 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +/* + * CMS contentInfo methods. + */ + +#include "cmslocal.h" + +#include "pk11func.h" +#include "secitem.h" +#include "secoid.h" +#include "secerr.h" + +/* + * NSS_CMSContentInfo_Create - create a content info + * + * version is set in the _Finalize procedures for each content type + */ +SECStatus +NSS_CMSContentInfo_Private_Init(NSSCMSContentInfo *cinfo) +{ + if (cinfo->privateInfo) { + return SECSuccess; + } + cinfo->privateInfo = PORT_ZNew(NSSCMSContentInfoPrivate); + return (cinfo->privateInfo) ? SECSuccess : SECFailure; +} + +static void +nss_cmsContentInfo_private_destroy(NSSCMSContentInfoPrivate *privateInfo) +{ + if (privateInfo->digcx) { + /* must destroy digest objects */ + NSS_CMSDigestContext_Cancel(privateInfo->digcx); + privateInfo->digcx = NULL; + } + if (privateInfo->ciphcx) { + NSS_CMSCipherContext_Destroy(privateInfo->ciphcx); + privateInfo->ciphcx = NULL; + } + PORT_Free(privateInfo); +} + +/* + * NSS_CMSContentInfo_Destroy - destroy a CMS contentInfo and all of its sub-pieces. + */ +void +NSS_CMSContentInfo_Destroy(NSSCMSContentInfo *cinfo) +{ + SECOidTag kind; + + kind = NSS_CMSContentInfo_GetContentTypeTag(cinfo); + switch (kind) { + case SEC_OID_PKCS7_ENVELOPED_DATA: + NSS_CMSEnvelopedData_Destroy(cinfo->content.envelopedData); + break; + case SEC_OID_PKCS7_SIGNED_DATA: + NSS_CMSSignedData_Destroy(cinfo->content.signedData); + break; + case SEC_OID_PKCS7_ENCRYPTED_DATA: + NSS_CMSEncryptedData_Destroy(cinfo->content.encryptedData); + break; + case SEC_OID_PKCS7_DIGESTED_DATA: + NSS_CMSDigestedData_Destroy(cinfo->content.digestedData); + break; + default: + NSS_CMSGenericWrapperData_Destroy(kind, cinfo->content.genericData); + /* XXX Anything else that needs to be "manually" freed/destroyed? */ + break; + } + if (cinfo->privateInfo) { + nss_cmsContentInfo_private_destroy(cinfo->privateInfo); + cinfo->privateInfo = NULL; + } + if (cinfo->bulkkey) { + PK11_FreeSymKey(cinfo->bulkkey); + } +} + +/* + * NSS_CMSContentInfo_GetChildContentInfo - get content's contentInfo (if it exists) + */ +NSSCMSContentInfo * +NSS_CMSContentInfo_GetChildContentInfo(NSSCMSContentInfo *cinfo) +{ + NSSCMSContentInfo *ccinfo = NULL; + SECOidTag tag = NSS_CMSContentInfo_GetContentTypeTag(cinfo); + switch (tag) { + case SEC_OID_PKCS7_SIGNED_DATA: + if (cinfo->content.signedData != NULL) { + ccinfo = &(cinfo->content.signedData->contentInfo); + } + break; + case SEC_OID_PKCS7_ENVELOPED_DATA: + if (cinfo->content.envelopedData != NULL) { + ccinfo = &(cinfo->content.envelopedData->contentInfo); + } + break; + case SEC_OID_PKCS7_DIGESTED_DATA: + if (cinfo->content.digestedData != NULL) { + ccinfo = &(cinfo->content.digestedData->contentInfo); + } + break; + case SEC_OID_PKCS7_ENCRYPTED_DATA: + if (cinfo->content.encryptedData != NULL) { + ccinfo = &(cinfo->content.encryptedData->contentInfo); + } + break; + case SEC_OID_PKCS7_DATA: + default: + if (NSS_CMSType_IsWrapper(tag)) { + if (cinfo->content.genericData != NULL) { + ccinfo = &(cinfo->content.genericData->contentInfo); + } + } + break; + } + if (ccinfo && !ccinfo->privateInfo) { + NSS_CMSContentInfo_Private_Init(ccinfo); + } + return ccinfo; +} + +SECStatus +NSS_CMSContentInfo_SetDontStream(NSSCMSContentInfo *cinfo, PRBool dontStream) +{ + SECStatus rv; + + rv = NSS_CMSContentInfo_Private_Init(cinfo); + if (rv != SECSuccess) { + /* default is streaming, failure to get ccinfo will not effect this */ + return dontStream ? SECFailure : SECSuccess; + } + cinfo->privateInfo->dontStream = dontStream; + return SECSuccess; +} + +/* + * NSS_CMSContentInfo_SetContent - set content type & content + */ +SECStatus +NSS_CMSContentInfo_SetContent(NSSCMSMessage *cmsg, NSSCMSContentInfo *cinfo, + SECOidTag type, void *ptr) +{ + SECStatus rv; + + 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; +} + +/* + * NSS_CMSContentInfo_SetContent_XXXX - typesafe wrappers for NSS_CMSContentInfo_SetContent + */ + +/* + * data == NULL -> pass in data via NSS_CMSEncoder_Update + * data != NULL -> take this data + */ +SECStatus +NSS_CMSContentInfo_SetContent_Data(NSSCMSMessage *cmsg, NSSCMSContentInfo *cinfo, + SECItem *data, PRBool detached) +{ + if (NSS_CMSContentInfo_SetContent(cmsg, cinfo, SEC_OID_PKCS7_DATA, (void *)data) != SECSuccess) + return SECFailure; + if (detached) { + cinfo->rawContent = NULL; + } + + return SECSuccess; +} + +SECStatus +NSS_CMSContentInfo_SetContent_SignedData(NSSCMSMessage *cmsg, NSSCMSContentInfo *cinfo, + NSSCMSSignedData *sigd) +{ + return NSS_CMSContentInfo_SetContent(cmsg, cinfo, SEC_OID_PKCS7_SIGNED_DATA, (void *)sigd); +} + +SECStatus +NSS_CMSContentInfo_SetContent_EnvelopedData(NSSCMSMessage *cmsg, NSSCMSContentInfo *cinfo, + NSSCMSEnvelopedData *envd) +{ + return NSS_CMSContentInfo_SetContent(cmsg, cinfo, SEC_OID_PKCS7_ENVELOPED_DATA, (void *)envd); +} + +SECStatus +NSS_CMSContentInfo_SetContent_DigestedData(NSSCMSMessage *cmsg, NSSCMSContentInfo *cinfo, + NSSCMSDigestedData *digd) +{ + return NSS_CMSContentInfo_SetContent(cmsg, cinfo, SEC_OID_PKCS7_DIGESTED_DATA, (void *)digd); +} + +SECStatus +NSS_CMSContentInfo_SetContent_EncryptedData(NSSCMSMessage *cmsg, NSSCMSContentInfo *cinfo, + NSSCMSEncryptedData *encd) +{ + return NSS_CMSContentInfo_SetContent(cmsg, cinfo, SEC_OID_PKCS7_ENCRYPTED_DATA, (void *)encd); +} + +/* + * NSS_CMSContentInfo_GetContent - get pointer to inner content + * + * needs to be casted... + */ +void * +NSS_CMSContentInfo_GetContent(NSSCMSContentInfo *cinfo) +{ + 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_GetInnerContent - get pointer to innermost content + * + * this is typically only called by NSS_CMSMessage_GetContent() + */ + +SECItem * +NSS_CMSContentInfo_GetInnerContent(NSSCMSContentInfo *cinfo) +{ + NSSCMSContentInfo *ccinfo; + SECOidTag tag; + SECItem *pItem = 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_CMSContentInfo_GetContentType{Tag,OID} - find out (saving pointer to lookup result + * for future reference) and return the inner content type. + */ +SECOidTag +NSS_CMSContentInfo_GetContentTypeTag(NSSCMSContentInfo *cinfo) +{ + if (cinfo->contentTypeTag == NULL) + cinfo->contentTypeTag = SECOID_FindOID(&(cinfo->contentType)); + + if (cinfo->contentTypeTag == NULL) + return SEC_OID_UNKNOWN; + + return cinfo->contentTypeTag->offset; +} + +SECItem * +NSS_CMSContentInfo_GetContentTypeOID(NSSCMSContentInfo *cinfo) +{ + if (cinfo->contentTypeTag == NULL) + cinfo->contentTypeTag = SECOID_FindOID(&(cinfo->contentType)); + + if (cinfo->contentTypeTag == NULL) + return NULL; + + return &(cinfo->contentTypeTag->oid); +} + +/* + * NSS_CMSContentInfo_GetContentEncAlgTag - find out (saving pointer to lookup result + * for future reference) and return the content encryption algorithm tag. + */ +SECOidTag +NSS_CMSContentInfo_GetContentEncAlgTag(NSSCMSContentInfo *cinfo) +{ + if (cinfo->contentEncAlgTag == SEC_OID_UNKNOWN) + cinfo->contentEncAlgTag = SECOID_GetAlgorithmTag(&(cinfo->contentEncAlg)); + + return cinfo->contentEncAlgTag; +} + +/* + * NSS_CMSContentInfo_GetContentEncAlg - find out and return the content encryption algorithm tag. + */ +SECAlgorithmID * +NSS_CMSContentInfo_GetContentEncAlg(NSSCMSContentInfo *cinfo) +{ + return &(cinfo->contentEncAlg); +} + +SECStatus +NSS_CMSContentInfo_SetContentEncAlg(PLArenaPool *poolp, NSSCMSContentInfo *cinfo, + SECOidTag bulkalgtag, SECItem *parameters, int keysize) +{ + SECStatus rv; + + rv = SECOID_SetAlgorithmID(poolp, &(cinfo->contentEncAlg), bulkalgtag, parameters); + if (rv != SECSuccess) + return SECFailure; + cinfo->keysize = keysize; + return SECSuccess; +} + +SECStatus +NSS_CMSContentInfo_SetContentEncAlgID(PLArenaPool *poolp, NSSCMSContentInfo *cinfo, + SECAlgorithmID *algid, int keysize) +{ + SECStatus rv; + + rv = SECOID_CopyAlgorithmID(poolp, &(cinfo->contentEncAlg), algid); + if (rv != SECSuccess) + return SECFailure; + if (keysize >= 0) + cinfo->keysize = keysize; + return SECSuccess; +} + +void +NSS_CMSContentInfo_SetBulkKey(NSSCMSContentInfo *cinfo, PK11SymKey *bulkkey) +{ + cinfo->bulkkey = PK11_ReferenceSymKey(bulkkey); + cinfo->keysize = PK11_GetKeyStrength(cinfo->bulkkey, &(cinfo->contentEncAlg)); +} + +PK11SymKey * +NSS_CMSContentInfo_GetBulkKey(NSSCMSContentInfo *cinfo) +{ + if (cinfo->bulkkey == NULL) + return NULL; + + return PK11_ReferenceSymKey(cinfo->bulkkey); +} + +int +NSS_CMSContentInfo_GetBulkKeySize(NSSCMSContentInfo *cinfo) +{ + return cinfo->keysize; +} |