The Tor Browser: security/nss/lib/smime/cmscinfo.c@7e26c7da4463 (annotated)

security/nss/lib/smime/cmscinfo.c@7e26c7da4463 (annotated)

security/nss/lib/smime/cmscinfo.c

Wed, 31 Dec 2014 06:55:50 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:55:50 +0100
changeset 2: 7e26c7da4463
permissions: -rw-r--r--

Added tag UPSTREAM_283F7C6 for changeset ca08bd8f51b2

 /* 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 && 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;
 }

The Tor Browser / annotate

security/nss/lib/smime/cmscinfo.c@7e26c7da4463 (annotated)

security/nss/lib/smime/cmscinfo.c