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-rw-r--r--security/nss/lib/smime/cmsudf.c440
1 files changed, 440 insertions, 0 deletions
diff --git a/security/nss/lib/smime/cmsudf.c b/security/nss/lib/smime/cmsudf.c
new file mode 100644
index 0000000000..5c8a81e6df
--- /dev/null
+++ b/security/nss/lib/smime/cmsudf.c
@@ -0,0 +1,440 @@
+/* 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 User Define Types
+ */
+
+#include "cmslocal.h"
+
+#include "prinit.h"
+#include "pk11func.h"
+#include "secitem.h"
+#include "secoid.h"
+#include "secerr.h"
+#include "nss.h"
+
+typedef struct nsscmstypeInfoStr nsscmstypeInfo;
+struct nsscmstypeInfoStr {
+ SECOidTag type;
+ SEC_ASN1Template *template;
+ size_t size;
+ PRBool isData;
+ NSSCMSGenericWrapperDataDestroy destroy;
+ NSSCMSGenericWrapperDataCallback decode_before;
+ NSSCMSGenericWrapperDataCallback decode_after;
+ NSSCMSGenericWrapperDataCallback decode_end;
+ NSSCMSGenericWrapperDataCallback encode_start;
+ NSSCMSGenericWrapperDataCallback encode_before;
+ NSSCMSGenericWrapperDataCallback encode_after;
+};
+
+/* make sure the global tables are only initialized once */
+static PRCallOnceType nsscmstypeOnce;
+static PRCallOnceType nsscmstypeClearOnce;
+/* lock for adding a new entry */
+static PRLock *nsscmstypeAddLock;
+/* lock for the hash table */
+static PRLock *nsscmstypeHashLock;
+/* the hash table itself */
+static PLHashTable *nsscmstypeHash;
+/* arena to hold all the hash table data */
+static PLArenaPool *nsscmstypeArena;
+
+/*
+ * clean up our global tables
+ */
+SECStatus
+nss_cmstype_shutdown(void *appData, void *reserved)
+{
+ if (nsscmstypeHashLock) {
+ PR_Lock(nsscmstypeHashLock);
+ }
+ if (nsscmstypeHash) {
+ PL_HashTableDestroy(nsscmstypeHash);
+ nsscmstypeHash = NULL;
+ }
+ if (nsscmstypeArena) {
+ PORT_FreeArena(nsscmstypeArena, PR_FALSE);
+ nsscmstypeArena = NULL;
+ }
+ if (nsscmstypeAddLock) {
+ PR_DestroyLock(nsscmstypeAddLock);
+ }
+ if (nsscmstypeHashLock) {
+ PRLock *oldLock = nsscmstypeHashLock;
+ nsscmstypeHashLock = NULL;
+ PR_Unlock(oldLock);
+ PR_DestroyLock(oldLock);
+ }
+
+ /* don't clear out the PR_ONCE data if we failed our inital call */
+ if (appData == NULL) {
+ nsscmstypeOnce = nsscmstypeClearOnce;
+ }
+ return SECSuccess;
+}
+
+static PLHashNumber
+nss_cmstype_hash_key(const void *key)
+{
+ return (PLHashNumber)((char *)key - (char *)NULL);
+}
+
+static PRIntn
+nss_cmstype_compare_keys(const void *v1, const void *v2)
+{
+ PLHashNumber value1 = nss_cmstype_hash_key(v1);
+ PLHashNumber value2 = nss_cmstype_hash_key(v2);
+
+ return (value1 == value2);
+}
+
+/*
+ * initialize our hash tables, called once on the first attemat to register
+ * a new SMIME type.
+ */
+static PRStatus
+nss_cmstype_init(void)
+{
+ SECStatus rv;
+
+ nsscmstypeHashLock = PR_NewLock();
+ if (nsscmstypeHashLock == NULL) {
+ return PR_FAILURE;
+ }
+ nsscmstypeAddLock = PR_NewLock();
+ if (nsscmstypeHashLock == NULL) {
+ goto fail;
+ }
+ nsscmstypeHash = PL_NewHashTable(64, nss_cmstype_hash_key,
+ nss_cmstype_compare_keys,
+ PL_CompareValues, NULL, NULL);
+ if (nsscmstypeHash == NULL) {
+ goto fail;
+ }
+ nsscmstypeArena = PORT_NewArena(2048);
+ if (nsscmstypeArena == NULL) {
+ goto fail;
+ }
+ rv = NSS_RegisterShutdown(nss_cmstype_shutdown, NULL);
+ if (rv != SECSuccess) {
+ goto fail;
+ }
+ return PR_SUCCESS;
+
+fail:
+ nss_cmstype_shutdown(&nsscmstypeOnce, NULL);
+ return PR_FAILURE;
+}
+
+/*
+ * look up and registered SIME type
+ */
+static const nsscmstypeInfo *
+nss_cmstype_lookup(SECOidTag type)
+{
+ nsscmstypeInfo *typeInfo = NULL;
+ ;
+ if (!nsscmstypeHash) {
+ return NULL;
+ }
+ PR_Lock(nsscmstypeHashLock);
+ if (nsscmstypeHash) {
+ typeInfo = PL_HashTableLookupConst(nsscmstypeHash, (void *)type);
+ }
+ PR_Unlock(nsscmstypeHashLock);
+ return typeInfo;
+}
+
+/*
+ * add a new type to the SMIME type table
+ */
+static SECStatus
+nss_cmstype_add(SECOidTag type, nsscmstypeInfo *typeinfo)
+{
+ PLHashEntry *entry;
+
+ if (!nsscmstypeHash) {
+ /* assert? this shouldn't happen */
+ return SECFailure;
+ }
+ PR_Lock(nsscmstypeHashLock);
+ /* this is really paranoia. If we really are racing nsscmstypeHash, we'll
+ * also be racing nsscmstypeHashLock... */
+ if (!nsscmstypeHash) {
+ PR_Unlock(nsscmstypeHashLock);
+ return SECFailure;
+ }
+ entry = PL_HashTableAdd(nsscmstypeHash, (void *)type, typeinfo);
+ PR_Unlock(nsscmstypeHashLock);
+ return entry ? SECSuccess : SECFailure;
+}
+
+/* helper functions to manage new content types
+ */
+
+PRBool
+NSS_CMSType_IsWrapper(SECOidTag type)
+{
+ const nsscmstypeInfo *typeInfo = NULL;
+
+ switch (type) {
+ 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 PR_TRUE;
+ default:
+ typeInfo = nss_cmstype_lookup(type);
+ if (typeInfo && !typeInfo->isData) {
+ return PR_TRUE;
+ }
+ }
+ return PR_FALSE;
+}
+
+PRBool
+NSS_CMSType_IsData(SECOidTag type)
+{
+ const nsscmstypeInfo *typeInfo = NULL;
+
+ switch (type) {
+ case SEC_OID_PKCS7_DATA:
+ return PR_TRUE;
+ default:
+ typeInfo = nss_cmstype_lookup(type);
+ if (typeInfo && typeInfo->isData) {
+ return PR_TRUE;
+ }
+ }
+ return PR_FALSE;
+}
+
+const SEC_ASN1Template *
+NSS_CMSType_GetTemplate(SECOidTag type)
+{
+ const nsscmstypeInfo *typeInfo = nss_cmstype_lookup(type);
+
+ if (typeInfo && typeInfo->template) {
+ return typeInfo->template;
+ }
+ return SEC_ASN1_GET(SEC_PointerToOctetStringTemplate);
+}
+
+size_t
+NSS_CMSType_GetContentSize(SECOidTag type)
+{
+ const nsscmstypeInfo *typeInfo = nss_cmstype_lookup(type);
+
+ if (typeInfo) {
+ return typeInfo->size;
+ }
+ return sizeof(SECItem *);
+}
+
+void
+NSS_CMSGenericWrapperData_Destroy(SECOidTag type, NSSCMSGenericWrapperData *gd)
+{
+ const nsscmstypeInfo *typeInfo = nss_cmstype_lookup(type);
+
+ if (typeInfo && (typeInfo->destroy) && (gd != NULL)) {
+ (*typeInfo->destroy)(gd);
+ }
+}
+
+SECStatus
+NSS_CMSGenericWrapperData_Decode_BeforeData(SECOidTag type,
+ NSSCMSGenericWrapperData *gd)
+{
+ const nsscmstypeInfo *typeInfo;
+
+ /* short cut common case */
+ if (type == SEC_OID_PKCS7_DATA) {
+ return SECSuccess;
+ }
+
+ typeInfo = nss_cmstype_lookup(type);
+ if (typeInfo) {
+ if (typeInfo->decode_before) {
+ return (*typeInfo->decode_before)(gd);
+ }
+ /* decoder ops optional for data tags */
+ if (typeInfo->isData) {
+ return SECSuccess;
+ }
+ }
+ /* expected a function, but none existed */
+ return SECFailure;
+}
+
+SECStatus
+NSS_CMSGenericWrapperData_Decode_AfterData(SECOidTag type,
+ NSSCMSGenericWrapperData *gd)
+{
+ const nsscmstypeInfo *typeInfo;
+
+ /* short cut common case */
+ if (type == SEC_OID_PKCS7_DATA) {
+ return SECSuccess;
+ }
+
+ typeInfo = nss_cmstype_lookup(type);
+ if (typeInfo) {
+ if (typeInfo->decode_after) {
+ return (*typeInfo->decode_after)(gd);
+ }
+ /* decoder ops optional for data tags */
+ if (typeInfo->isData) {
+ return SECSuccess;
+ }
+ }
+ /* expected a function, but none existed */
+ return SECFailure;
+}
+
+SECStatus
+NSS_CMSGenericWrapperData_Decode_AfterEnd(SECOidTag type,
+ NSSCMSGenericWrapperData *gd)
+{
+ const nsscmstypeInfo *typeInfo;
+
+ /* short cut common case */
+ if (type == SEC_OID_PKCS7_DATA) {
+ return SECSuccess;
+ }
+
+ typeInfo = nss_cmstype_lookup(type);
+ if (typeInfo) {
+ if (typeInfo->decode_end) {
+ return (*typeInfo->decode_end)(gd);
+ }
+ /* decoder ops optional for data tags */
+ if (typeInfo->isData) {
+ return SECSuccess;
+ }
+ }
+ /* expected a function, but none existed */
+ return SECFailure;
+}
+
+SECStatus
+NSS_CMSGenericWrapperData_Encode_BeforeStart(SECOidTag type,
+ NSSCMSGenericWrapperData *gd)
+{
+ const nsscmstypeInfo *typeInfo;
+
+ /* short cut common case */
+ if (type == SEC_OID_PKCS7_DATA) {
+ return SECSuccess;
+ }
+
+ typeInfo = nss_cmstype_lookup(type);
+ if (typeInfo) {
+ if (typeInfo->encode_start) {
+ return (*typeInfo->encode_start)(gd);
+ }
+ /* decoder ops optional for data tags */
+ if (typeInfo->isData) {
+ return SECSuccess;
+ }
+ }
+ /* expected a function, but none existed */
+ return SECFailure;
+}
+
+SECStatus
+NSS_CMSGenericWrapperData_Encode_BeforeData(SECOidTag type,
+ NSSCMSGenericWrapperData *gd)
+{
+ const nsscmstypeInfo *typeInfo;
+
+ /* short cut common case */
+ if (type == SEC_OID_PKCS7_DATA) {
+ return SECSuccess;
+ }
+
+ typeInfo = nss_cmstype_lookup(type);
+ if (typeInfo) {
+ if (typeInfo->encode_before) {
+ return (*typeInfo->encode_before)(gd);
+ }
+ /* decoder ops optional for data tags */
+ if (typeInfo->isData) {
+ return SECSuccess;
+ }
+ }
+ /* expected a function, but none existed */
+ return SECFailure;
+}
+
+SECStatus
+NSS_CMSGenericWrapperData_Encode_AfterData(SECOidTag type,
+ NSSCMSGenericWrapperData *gd)
+{
+ const nsscmstypeInfo *typeInfo;
+
+ /* short cut common case */
+ if (type == SEC_OID_PKCS7_DATA) {
+ return SECSuccess;
+ }
+
+ typeInfo = nss_cmstype_lookup(type);
+ if (typeInfo) {
+ if (typeInfo->encode_after) {
+ return (*typeInfo->encode_after)(gd);
+ }
+ /* decoder ops optional for data tags */
+ if (typeInfo->isData) {
+ return SECSuccess;
+ }
+ }
+ /* expected a function, but none existed */
+ return SECFailure;
+}
+
+SECStatus
+NSS_CMSType_RegisterContentType(SECOidTag type,
+ SEC_ASN1Template *asn1Template, size_t size,
+ NSSCMSGenericWrapperDataDestroy destroy,
+ NSSCMSGenericWrapperDataCallback decode_before,
+ NSSCMSGenericWrapperDataCallback decode_after,
+ NSSCMSGenericWrapperDataCallback decode_end,
+ NSSCMSGenericWrapperDataCallback encode_start,
+ NSSCMSGenericWrapperDataCallback encode_before,
+ NSSCMSGenericWrapperDataCallback encode_after,
+ PRBool isData)
+{
+ PRStatus rc;
+ SECStatus rv;
+ nsscmstypeInfo *typeInfo;
+ const nsscmstypeInfo *exists;
+
+ rc = PR_CallOnce(&nsscmstypeOnce, nss_cmstype_init);
+ if (rc == PR_FAILURE) {
+ return SECFailure;
+ }
+ PR_Lock(nsscmstypeAddLock);
+ exists = nss_cmstype_lookup(type);
+ if (exists) {
+ PR_Unlock(nsscmstypeAddLock);
+ /* already added */
+ return SECSuccess;
+ }
+ typeInfo = PORT_ArenaNew(nsscmstypeArena, nsscmstypeInfo);
+ typeInfo->type = type;
+ typeInfo->size = size;
+ typeInfo->isData = isData;
+ typeInfo->template = asn1Template;
+ typeInfo->destroy = destroy;
+ typeInfo->decode_before = decode_before;
+ typeInfo->decode_after = decode_after;
+ typeInfo->decode_end = decode_end;
+ typeInfo->encode_start = encode_start;
+ typeInfo->encode_before = encode_before;
+ typeInfo->encode_after = encode_after;
+ rv = nss_cmstype_add(type, typeInfo);
+ PR_Unlock(nsscmstypeAddLock);
+ return rv;
+}