Index: nss/lib/certdb/crl.c |
diff --git a/nss/lib/certdb/crl.c b/nss/lib/certdb/crl.c |
deleted file mode 100644 |
index a7baf53bb750692b062334688dd6621790eaf1b7..0000000000000000000000000000000000000000 |
--- a/nss/lib/certdb/crl.c |
+++ /dev/null |
@@ -1,3044 +0,0 @@ |
-/* 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/. */ |
- |
-/* |
- * Moved from secpkcs7.c |
- */ |
- |
-#include "cert.h" |
-#include "certi.h" |
-#include "secder.h" |
-#include "secasn1.h" |
-#include "secoid.h" |
-#include "certdb.h" |
-#include "certxutl.h" |
-#include "prtime.h" |
-#include "secerr.h" |
-#include "pk11func.h" |
-#include "dev.h" |
-#include "dev3hack.h" |
-#include "nssbase.h" |
-#if defined(DPC_RWLOCK) || defined(GLOBAL_RWLOCK) |
-#include "nssrwlk.h" |
-#endif |
-#include "pk11priv.h" |
- |
-const SEC_ASN1Template SEC_CERTExtensionTemplate[] = { |
- { SEC_ASN1_SEQUENCE, 0, NULL, sizeof(CERTCertExtension) }, |
- { SEC_ASN1_OBJECT_ID, offsetof(CERTCertExtension, id) }, |
- { SEC_ASN1_OPTIONAL | SEC_ASN1_BOOLEAN, /* XXX DER_DEFAULT */ |
- offsetof(CERTCertExtension, critical) }, |
- { SEC_ASN1_OCTET_STRING, offsetof(CERTCertExtension, value) }, |
- { 0 } |
-}; |
- |
-static const SEC_ASN1Template SEC_CERTExtensionsTemplate[] = { |
- { SEC_ASN1_SEQUENCE_OF, 0, SEC_CERTExtensionTemplate } |
-}; |
- |
-/* |
- * XXX Also, these templates need to be tested; Lisa did the obvious |
- * translation but they still should be verified. |
- */ |
- |
-const SEC_ASN1Template CERT_IssuerAndSNTemplate[] = { |
- { SEC_ASN1_SEQUENCE, 0, NULL, sizeof(CERTIssuerAndSN) }, |
- { SEC_ASN1_SAVE, offsetof(CERTIssuerAndSN, derIssuer) }, |
- { SEC_ASN1_INLINE, offsetof(CERTIssuerAndSN, issuer), CERT_NameTemplate }, |
- { SEC_ASN1_INTEGER, offsetof(CERTIssuerAndSN, serialNumber) }, |
- { 0 } |
-}; |
- |
-SEC_ASN1_MKSUB(SECOID_AlgorithmIDTemplate) |
-SEC_ASN1_MKSUB(CERT_TimeChoiceTemplate) |
- |
-static const SEC_ASN1Template cert_CrlKeyTemplate[] = { |
- { SEC_ASN1_SEQUENCE, 0, NULL, sizeof(CERTCrlKey) }, |
- { SEC_ASN1_INTEGER | SEC_ASN1_OPTIONAL, offsetof(CERTCrlKey, dummy) }, |
- { SEC_ASN1_SKIP }, |
- { SEC_ASN1_ANY, offsetof(CERTCrlKey, derName) }, |
- { SEC_ASN1_SKIP_REST }, |
- { 0 } |
-}; |
- |
-static const SEC_ASN1Template cert_CrlEntryTemplate[] = { |
- { SEC_ASN1_SEQUENCE, 0, NULL, sizeof(CERTCrlEntry) }, |
- { SEC_ASN1_INTEGER, offsetof(CERTCrlEntry, serialNumber) }, |
- { SEC_ASN1_INLINE | SEC_ASN1_XTRN, offsetof(CERTCrlEntry, revocationDate), |
- SEC_ASN1_SUB(CERT_TimeChoiceTemplate) }, |
- { SEC_ASN1_OPTIONAL | SEC_ASN1_SEQUENCE_OF, |
- offsetof(CERTCrlEntry, extensions), SEC_CERTExtensionTemplate }, |
- { 0 } |
-}; |
- |
-const SEC_ASN1Template CERT_CrlTemplate[] = { |
- { SEC_ASN1_SEQUENCE, 0, NULL, sizeof(CERTCrl) }, |
- { SEC_ASN1_INTEGER | SEC_ASN1_OPTIONAL, offsetof(CERTCrl, version) }, |
- { SEC_ASN1_INLINE | SEC_ASN1_XTRN, offsetof(CERTCrl, signatureAlg), |
- SEC_ASN1_SUB(SECOID_AlgorithmIDTemplate) }, |
- { SEC_ASN1_SAVE, offsetof(CERTCrl, derName) }, |
- { SEC_ASN1_INLINE, offsetof(CERTCrl, name), CERT_NameTemplate }, |
- { SEC_ASN1_INLINE | SEC_ASN1_XTRN, offsetof(CERTCrl, lastUpdate), |
- SEC_ASN1_SUB(CERT_TimeChoiceTemplate) }, |
- { SEC_ASN1_INLINE | SEC_ASN1_OPTIONAL | SEC_ASN1_XTRN, |
- offsetof(CERTCrl, nextUpdate), SEC_ASN1_SUB(CERT_TimeChoiceTemplate) }, |
- { SEC_ASN1_OPTIONAL | SEC_ASN1_SEQUENCE_OF, offsetof(CERTCrl, entries), |
- cert_CrlEntryTemplate }, |
- { SEC_ASN1_OPTIONAL | SEC_ASN1_CONSTRUCTED | SEC_ASN1_CONTEXT_SPECIFIC | |
- SEC_ASN1_EXPLICIT | 0, |
- offsetof(CERTCrl, extensions), SEC_CERTExtensionsTemplate }, |
- { 0 } |
-}; |
- |
-const SEC_ASN1Template CERT_CrlTemplateNoEntries[] = { |
- { SEC_ASN1_SEQUENCE, 0, NULL, sizeof(CERTCrl) }, |
- { SEC_ASN1_INTEGER | SEC_ASN1_OPTIONAL, offsetof(CERTCrl, version) }, |
- { SEC_ASN1_INLINE | SEC_ASN1_XTRN, offsetof(CERTCrl, signatureAlg), |
- SEC_ASN1_SUB(SECOID_AlgorithmIDTemplate) }, |
- { SEC_ASN1_SAVE, offsetof(CERTCrl, derName) }, |
- { SEC_ASN1_INLINE, offsetof(CERTCrl, name), CERT_NameTemplate }, |
- { SEC_ASN1_INLINE | SEC_ASN1_XTRN, offsetof(CERTCrl, lastUpdate), |
- SEC_ASN1_SUB(CERT_TimeChoiceTemplate) }, |
- { SEC_ASN1_INLINE | SEC_ASN1_OPTIONAL | SEC_ASN1_XTRN, |
- offsetof(CERTCrl, nextUpdate), SEC_ASN1_SUB(CERT_TimeChoiceTemplate) }, |
- { SEC_ASN1_OPTIONAL | SEC_ASN1_SEQUENCE_OF | |
- SEC_ASN1_SKIP }, /* skip entries */ |
- { SEC_ASN1_OPTIONAL | SEC_ASN1_CONSTRUCTED | SEC_ASN1_CONTEXT_SPECIFIC | |
- SEC_ASN1_EXPLICIT | 0, |
- offsetof(CERTCrl, extensions), SEC_CERTExtensionsTemplate }, |
- { 0 } |
-}; |
- |
-const SEC_ASN1Template CERT_CrlTemplateEntriesOnly[] = { |
- { SEC_ASN1_SEQUENCE, 0, NULL, sizeof(CERTCrl) }, |
- { SEC_ASN1_SKIP | SEC_ASN1_INTEGER | SEC_ASN1_OPTIONAL }, |
- { SEC_ASN1_SKIP }, |
- { SEC_ASN1_SKIP }, |
- { SEC_ASN1_SKIP | SEC_ASN1_INLINE | SEC_ASN1_XTRN, |
- offsetof(CERTCrl, lastUpdate), SEC_ASN1_SUB(CERT_TimeChoiceTemplate) }, |
- { SEC_ASN1_SKIP | SEC_ASN1_INLINE | SEC_ASN1_OPTIONAL | SEC_ASN1_XTRN, |
- offsetof(CERTCrl, nextUpdate), SEC_ASN1_SUB(CERT_TimeChoiceTemplate) }, |
- { SEC_ASN1_OPTIONAL | SEC_ASN1_SEQUENCE_OF, offsetof(CERTCrl, entries), |
- cert_CrlEntryTemplate }, /* decode entries */ |
- { SEC_ASN1_SKIP_REST }, |
- { 0 } |
-}; |
- |
-const SEC_ASN1Template CERT_SignedCrlTemplate[] = { |
- { SEC_ASN1_SEQUENCE, 0, NULL, sizeof(CERTSignedCrl) }, |
- { SEC_ASN1_SAVE, offsetof(CERTSignedCrl, signatureWrap.data) }, |
- { SEC_ASN1_INLINE, offsetof(CERTSignedCrl, crl), CERT_CrlTemplate }, |
- { SEC_ASN1_INLINE | SEC_ASN1_XTRN, |
- offsetof(CERTSignedCrl, signatureWrap.signatureAlgorithm), |
- SEC_ASN1_SUB(SECOID_AlgorithmIDTemplate) }, |
- { SEC_ASN1_BIT_STRING, offsetof(CERTSignedCrl, signatureWrap.signature) }, |
- { 0 } |
-}; |
- |
-static const SEC_ASN1Template cert_SignedCrlTemplateNoEntries[] = { |
- { SEC_ASN1_SEQUENCE, 0, NULL, sizeof(CERTSignedCrl) }, |
- { SEC_ASN1_SAVE, offsetof(CERTSignedCrl, signatureWrap.data) }, |
- { SEC_ASN1_INLINE, offsetof(CERTSignedCrl, crl), |
- CERT_CrlTemplateNoEntries }, |
- { SEC_ASN1_INLINE | SEC_ASN1_XTRN, |
- offsetof(CERTSignedCrl, signatureWrap.signatureAlgorithm), |
- SEC_ASN1_SUB(SECOID_AlgorithmIDTemplate) }, |
- { SEC_ASN1_BIT_STRING, offsetof(CERTSignedCrl, signatureWrap.signature) }, |
- { 0 } |
-}; |
- |
-const SEC_ASN1Template CERT_SetOfSignedCrlTemplate[] = { |
- { SEC_ASN1_SET_OF, 0, CERT_SignedCrlTemplate }, |
-}; |
- |
-/* get CRL version */ |
-int |
-cert_get_crl_version(CERTCrl* crl) |
-{ |
- /* CRL version is defaulted to v1 */ |
- int version = SEC_CRL_VERSION_1; |
- if (crl && crl->version.data != 0) { |
- version = (int)DER_GetUInteger(&crl->version); |
- } |
- return version; |
-} |
- |
-/* check the entries in the CRL */ |
-SECStatus |
-cert_check_crl_entries(CERTCrl* crl) |
-{ |
- CERTCrlEntry** entries; |
- CERTCrlEntry* entry; |
- PRBool hasCriticalExten = PR_FALSE; |
- SECStatus rv = SECSuccess; |
- |
- if (!crl) { |
- return SECFailure; |
- } |
- |
- if (crl->entries == NULL) { |
- /* CRLs with no entries are valid */ |
- return (SECSuccess); |
- } |
- |
- /* Look in the crl entry extensions. If there is a critical extension, |
- then the crl version must be v2; otherwise, it should be v1. |
- */ |
- entries = crl->entries; |
- while (*entries) { |
- entry = *entries; |
- if (entry->extensions) { |
- /* If there is a critical extension in the entries, then the |
- CRL must be of version 2. If we already saw a critical |
- extension, |
- there is no need to check the version again. |
- */ |
- if (hasCriticalExten == PR_FALSE) { |
- hasCriticalExten = cert_HasCriticalExtension(entry->extensions); |
- if (hasCriticalExten) { |
- if (cert_get_crl_version(crl) != SEC_CRL_VERSION_2) { |
- /* only CRL v2 critical extensions are supported */ |
- PORT_SetError(SEC_ERROR_CRL_V1_CRITICAL_EXTENSION); |
- rv = SECFailure; |
- break; |
- } |
- } |
- } |
- |
- /* For each entry, make sure that it does not contain an unknown |
- critical extension. If it does, we must reject the CRL since |
- we don't know how to process the extension. |
- */ |
- if (cert_HasUnknownCriticalExten(entry->extensions) == PR_TRUE) { |
- PORT_SetError(SEC_ERROR_CRL_UNKNOWN_CRITICAL_EXTENSION); |
- rv = SECFailure; |
- break; |
- } |
- } |
- ++entries; |
- } |
- return (rv); |
-} |
- |
-/* Check the version of the CRL. If there is a critical extension in the crl |
- or crl entry, then the version must be v2. Otherwise, it should be v1. If |
- the crl contains critical extension(s), then we must recognized the |
- extension's OID. |
- */ |
-SECStatus |
-cert_check_crl_version(CERTCrl* crl) |
-{ |
- PRBool hasCriticalExten = PR_FALSE; |
- int version = cert_get_crl_version(crl); |
- |
- if (version > SEC_CRL_VERSION_2) { |
- PORT_SetError(SEC_ERROR_CRL_INVALID_VERSION); |
- return (SECFailure); |
- } |
- |
- /* Check the crl extensions for a critial extension. If one is found, |
- and the version is not v2, then we are done. |
- */ |
- if (crl->extensions) { |
- hasCriticalExten = cert_HasCriticalExtension(crl->extensions); |
- if (hasCriticalExten) { |
- if (version != SEC_CRL_VERSION_2) { |
- /* only CRL v2 critical extensions are supported */ |
- PORT_SetError(SEC_ERROR_CRL_V1_CRITICAL_EXTENSION); |
- return (SECFailure); |
- } |
- /* make sure that there is no unknown critical extension */ |
- if (cert_HasUnknownCriticalExten(crl->extensions) == PR_TRUE) { |
- PORT_SetError(SEC_ERROR_CRL_UNKNOWN_CRITICAL_EXTENSION); |
- return (SECFailure); |
- } |
- } |
- } |
- |
- return (SECSuccess); |
-} |
- |
-/* |
- * Generate a database key, based on the issuer name from a |
- * DER crl. |
- */ |
-SECStatus |
-CERT_KeyFromDERCrl(PLArenaPool* arena, SECItem* derCrl, SECItem* key) |
-{ |
- SECStatus rv; |
- CERTSignedData sd; |
- CERTCrlKey crlkey; |
- PLArenaPool* myArena; |
- |
- if (!arena) { |
- /* arena needed for QuickDER */ |
- myArena = PORT_NewArena(DER_DEFAULT_CHUNKSIZE); |
- } else { |
- myArena = arena; |
- } |
- PORT_Memset(&sd, 0, sizeof(sd)); |
- rv = SEC_QuickDERDecodeItem(myArena, &sd, CERT_SignedDataTemplate, derCrl); |
- if (SECSuccess == rv) { |
- PORT_Memset(&crlkey, 0, sizeof(crlkey)); |
- rv = SEC_QuickDERDecodeItem(myArena, &crlkey, cert_CrlKeyTemplate, |
- &sd.data); |
- } |
- |
- /* make a copy so the data doesn't point to memory inside derCrl, which |
- may be temporary */ |
- if (SECSuccess == rv) { |
- rv = SECITEM_CopyItem(arena, key, &crlkey.derName); |
- } |
- |
- if (myArena != arena) { |
- PORT_FreeArena(myArena, PR_FALSE); |
- } |
- |
- return rv; |
-} |
- |
-#define GetOpaqueCRLFields(x) ((OpaqueCRLFields*)x->opaque) |
- |
-SECStatus |
-CERT_CompleteCRLDecodeEntries(CERTSignedCrl* crl) |
-{ |
- SECStatus rv = SECSuccess; |
- SECItem* crldata = NULL; |
- OpaqueCRLFields* extended = NULL; |
- |
- if ((!crl) || (!(extended = (OpaqueCRLFields*)crl->opaque)) || |
- (PR_TRUE == extended->decodingError)) { |
- rv = SECFailure; |
- } else { |
- if (PR_FALSE == extended->partial) { |
- /* the CRL has already been fully decoded */ |
- return SECSuccess; |
- } |
- if (PR_TRUE == extended->badEntries) { |
- /* the entries decoding already failed */ |
- return SECFailure; |
- } |
- crldata = &crl->signatureWrap.data; |
- if (!crldata) { |
- rv = SECFailure; |
- } |
- } |
- |
- if (SECSuccess == rv) { |
- rv = SEC_QuickDERDecodeItem(crl->arena, &crl->crl, |
- CERT_CrlTemplateEntriesOnly, crldata); |
- if (SECSuccess == rv) { |
- extended->partial = PR_FALSE; /* successful decode, avoid |
- decoding again */ |
- } else { |
- extended->decodingError = PR_TRUE; |
- extended->badEntries = PR_TRUE; |
- /* cache the decoding failure. If it fails the first time, |
- it will fail again, which will grow the arena and leak |
- memory, so we want to avoid it */ |
- } |
- rv = cert_check_crl_entries(&crl->crl); |
- if (rv != SECSuccess) { |
- extended->badExtensions = PR_TRUE; |
- } |
- } |
- return rv; |
-} |
- |
-/* |
- * take a DER CRL and decode it into a CRL structure |
- * allow reusing the input DER without making a copy |
- */ |
-CERTSignedCrl* |
-CERT_DecodeDERCrlWithFlags(PLArenaPool* narena, SECItem* derSignedCrl, int type, |
- PRInt32 options) |
-{ |
- PLArenaPool* arena; |
- CERTSignedCrl* crl; |
- SECStatus rv; |
- OpaqueCRLFields* extended = NULL; |
- const SEC_ASN1Template* crlTemplate = CERT_SignedCrlTemplate; |
- PRInt32 testOptions = options; |
- |
- PORT_Assert(derSignedCrl); |
- if (!derSignedCrl) { |
- PORT_SetError(SEC_ERROR_INVALID_ARGS); |
- return NULL; |
- } |
- |
- /* Adopting DER requires not copying it. Code that sets ADOPT flag |
- * but doesn't set DONT_COPY probably doesn't know What it is doing. |
- * That condition is a programming error in the caller. |
- */ |
- testOptions &= (CRL_DECODE_ADOPT_HEAP_DER | CRL_DECODE_DONT_COPY_DER); |
- PORT_Assert(testOptions != CRL_DECODE_ADOPT_HEAP_DER); |
- if (testOptions == CRL_DECODE_ADOPT_HEAP_DER) { |
- PORT_SetError(SEC_ERROR_INVALID_ARGS); |
- return NULL; |
- } |
- |
- /* make a new arena if needed */ |
- if (narena == NULL) { |
- arena = PORT_NewArena(DER_DEFAULT_CHUNKSIZE); |
- if (!arena) { |
- return NULL; |
- } |
- } else { |
- arena = narena; |
- } |
- |
- /* allocate the CRL structure */ |
- crl = (CERTSignedCrl*)PORT_ArenaZAlloc(arena, sizeof(CERTSignedCrl)); |
- if (!crl) { |
- PORT_SetError(SEC_ERROR_NO_MEMORY); |
- goto loser; |
- } |
- |
- crl->arena = arena; |
- |
- /* allocate opaque fields */ |
- crl->opaque = (void*)PORT_ArenaZAlloc(arena, sizeof(OpaqueCRLFields)); |
- if (!crl->opaque) { |
- goto loser; |
- } |
- extended = (OpaqueCRLFields*)crl->opaque; |
- if (options & CRL_DECODE_ADOPT_HEAP_DER) { |
- extended->heapDER = PR_TRUE; |
- } |
- if (options & CRL_DECODE_DONT_COPY_DER) { |
- crl->derCrl = derSignedCrl; /* DER is not copied . The application |
- must keep derSignedCrl until it |
- destroys the CRL */ |
- } else { |
- crl->derCrl = (SECItem*)PORT_ArenaZAlloc(arena, sizeof(SECItem)); |
- if (crl->derCrl == NULL) { |
- goto loser; |
- } |
- rv = SECITEM_CopyItem(arena, crl->derCrl, derSignedCrl); |
- if (rv != SECSuccess) { |
- goto loser; |
- } |
- } |
- |
- /* Save the arena in the inner crl for CRL extensions support */ |
- crl->crl.arena = arena; |
- if (options & CRL_DECODE_SKIP_ENTRIES) { |
- crlTemplate = cert_SignedCrlTemplateNoEntries; |
- extended->partial = PR_TRUE; |
- } |
- |
- /* decode the CRL info */ |
- switch (type) { |
- case SEC_CRL_TYPE: |
- rv = SEC_QuickDERDecodeItem(arena, crl, crlTemplate, crl->derCrl); |
- if (rv != SECSuccess) { |
- extended->badDER = PR_TRUE; |
- break; |
- } |
- /* check for critical extensions */ |
- rv = cert_check_crl_version(&crl->crl); |
- if (rv != SECSuccess) { |
- extended->badExtensions = PR_TRUE; |
- break; |
- } |
- |
- if (PR_TRUE == extended->partial) { |
- /* partial decoding, don't verify entries */ |
- break; |
- } |
- |
- rv = cert_check_crl_entries(&crl->crl); |
- if (rv != SECSuccess) { |
- extended->badExtensions = PR_TRUE; |
- } |
- |
- break; |
- |
- default: |
- PORT_SetError(SEC_ERROR_INVALID_ARGS); |
- rv = SECFailure; |
- break; |
- } |
- |
- if (rv != SECSuccess) { |
- goto loser; |
- } |
- |
- crl->referenceCount = 1; |
- |
- return (crl); |
- |
-loser: |
- if (options & CRL_DECODE_KEEP_BAD_CRL) { |
- if (extended) { |
- extended->decodingError = PR_TRUE; |
- } |
- if (crl) { |
- crl->referenceCount = 1; |
- return (crl); |
- } |
- } |
- |
- if ((narena == NULL) && arena) { |
- PORT_FreeArena(arena, PR_FALSE); |
- } |
- |
- return (0); |
-} |
- |
-/* |
- * take a DER CRL and decode it into a CRL structure |
- */ |
-CERTSignedCrl* |
-CERT_DecodeDERCrl(PLArenaPool* narena, SECItem* derSignedCrl, int type) |
-{ |
- return CERT_DecodeDERCrlWithFlags(narena, derSignedCrl, type, |
- CRL_DECODE_DEFAULT_OPTIONS); |
-} |
- |
-/* |
- * Lookup a CRL in the databases. We mirror the same fast caching data base |
- * caching stuff used by certificates....? |
- * return values : |
- * |
- * SECSuccess means we got a valid decodable DER CRL, or no CRL at all. |
- * Caller may distinguish those cases by the value returned in "decoded". |
- * When DER CRL is not found, error code will be SEC_ERROR_CRL_NOT_FOUND. |
- * |
- * SECFailure means we got a fatal error - most likely, we found a CRL, |
- * and it failed decoding, or there was an out of memory error. Do NOT ignore |
- * it and specifically do NOT treat it the same as having no CRL, as this |
- * can compromise security !!! Ideally, you should treat this case as if you |
- * received a "catch-all" CRL where all certs you were looking up are |
- * considered to be revoked |
- */ |
-static SECStatus |
-SEC_FindCrlByKeyOnSlot(PK11SlotInfo* slot, SECItem* crlKey, int type, |
- CERTSignedCrl** decoded, PRInt32 decodeoptions) |
-{ |
- SECStatus rv = SECSuccess; |
- CERTSignedCrl* crl = NULL; |
- SECItem* derCrl = NULL; |
- CK_OBJECT_HANDLE crlHandle = 0; |
- char* url = NULL; |
- |
- PORT_Assert(decoded); |
- if (!decoded) { |
- PORT_SetError(SEC_ERROR_INVALID_ARGS); |
- return SECFailure; |
- } |
- |
- derCrl = PK11_FindCrlByName(&slot, &crlHandle, crlKey, type, &url); |
- if (derCrl == NULL) { |
- /* if we had a problem other than the CRL just didn't exist, return |
- * a failure to the upper level */ |
- int nsserror = PORT_GetError(); |
- if (nsserror != SEC_ERROR_CRL_NOT_FOUND) { |
- rv = SECFailure; |
- } |
- goto loser; |
- } |
- PORT_Assert(crlHandle != CK_INVALID_HANDLE); |
- /* PK11_FindCrlByName obtained a slot reference. */ |
- |
- /* derCRL is a fresh HEAP copy made for us by PK11_FindCrlByName. |
- Force adoption of the DER CRL from the heap - this will cause it |
- to be automatically freed when SEC_DestroyCrl is invoked */ |
- decodeoptions |= (CRL_DECODE_ADOPT_HEAP_DER | CRL_DECODE_DONT_COPY_DER); |
- |
- crl = CERT_DecodeDERCrlWithFlags(NULL, derCrl, type, decodeoptions); |
- if (crl) { |
- crl->slot = slot; |
- slot = NULL; /* adopt it */ |
- derCrl = NULL; /* adopted by the crl struct */ |
- crl->pkcs11ID = crlHandle; |
- if (url) { |
- crl->url = PORT_ArenaStrdup(crl->arena, url); |
- } |
- } else { |
- rv = SECFailure; |
- } |
- |
- if (url) { |
- PORT_Free(url); |
- } |
- |
- if (slot) { |
- PK11_FreeSlot(slot); |
- } |
- |
-loser: |
- if (derCrl) { |
- SECITEM_FreeItem(derCrl, PR_TRUE); |
- } |
- |
- *decoded = crl; |
- |
- return rv; |
-} |
- |
-CERTSignedCrl* |
-crl_storeCRL(PK11SlotInfo* slot, char* url, CERTSignedCrl* newCrl, |
- SECItem* derCrl, int type) |
-{ |
- CERTSignedCrl *oldCrl = NULL, *crl = NULL; |
- PRBool deleteOldCrl = PR_FALSE; |
- CK_OBJECT_HANDLE crlHandle = CK_INVALID_HANDLE; |
- |
- PORT_Assert(newCrl); |
- PORT_Assert(derCrl); |
- PORT_Assert(type == SEC_CRL_TYPE); |
- |
- if (type != SEC_CRL_TYPE) { |
- PORT_SetError(SEC_ERROR_INVALID_ARGS); |
- return NULL; |
- } |
- |
- /* we can't use the cache here because we must look in the same |
- token */ |
- (void)SEC_FindCrlByKeyOnSlot(slot, &newCrl->crl.derName, type, &oldCrl, |
- CRL_DECODE_SKIP_ENTRIES); |
- /* if there is an old crl on the token, make sure the one we are |
- installing is newer. If not, exit out, otherwise delete the |
- old crl. |
- */ |
- if (oldCrl != NULL) { |
- /* if it's already there, quietly continue */ |
- if (SECITEM_CompareItem(newCrl->derCrl, oldCrl->derCrl) == SECEqual) { |
- crl = newCrl; |
- crl->slot = PK11_ReferenceSlot(slot); |
- crl->pkcs11ID = oldCrl->pkcs11ID; |
- if (oldCrl->url && !url) |
- url = oldCrl->url; |
- if (url) |
- crl->url = PORT_ArenaStrdup(crl->arena, url); |
- goto done; |
- } |
- if (!SEC_CrlIsNewer(&newCrl->crl, &oldCrl->crl)) { |
- PORT_SetError(SEC_ERROR_OLD_CRL); |
- goto done; |
- } |
- |
- /* if we have a url in the database, use that one */ |
- if (oldCrl->url && !url) { |
- url = oldCrl->url; |
- } |
- |
- /* really destroy this crl */ |
- /* first drum it out of the permanment Data base */ |
- deleteOldCrl = PR_TRUE; |
- } |
- |
- /* invalidate CRL cache for this issuer */ |
- CERT_CRLCacheRefreshIssuer(NULL, &newCrl->crl.derName); |
- /* Write the new entry into the data base */ |
- crlHandle = PK11_PutCrl(slot, derCrl, &newCrl->crl.derName, url, type); |
- if (crlHandle != CK_INVALID_HANDLE) { |
- crl = newCrl; |
- crl->slot = PK11_ReferenceSlot(slot); |
- crl->pkcs11ID = crlHandle; |
- if (url) { |
- crl->url = PORT_ArenaStrdup(crl->arena, url); |
- } |
- } |
- |
-done: |
- if (oldCrl) { |
- if (deleteOldCrl && crlHandle != CK_INVALID_HANDLE) { |
- SEC_DeletePermCRL(oldCrl); |
- } |
- SEC_DestroyCrl(oldCrl); |
- } |
- |
- return crl; |
-} |
- |
-/* |
- * |
- * create a new CRL from DER material. |
- * |
- * The signature on this CRL must be checked before you |
- * load it. ??? |
- */ |
-CERTSignedCrl* |
-SEC_NewCrl(CERTCertDBHandle* handle, char* url, SECItem* derCrl, int type) |
-{ |
- CERTSignedCrl* retCrl = NULL; |
- PK11SlotInfo* slot = PK11_GetInternalKeySlot(); |
- retCrl = |
- PK11_ImportCRL(slot, derCrl, url, type, NULL, CRL_IMPORT_BYPASS_CHECKS, |
- NULL, CRL_DECODE_DEFAULT_OPTIONS); |
- PK11_FreeSlot(slot); |
- |
- return retCrl; |
-} |
- |
-CERTSignedCrl* |
-SEC_FindCrlByDERCert(CERTCertDBHandle* handle, SECItem* derCrl, int type) |
-{ |
- PLArenaPool* arena; |
- SECItem crlKey; |
- SECStatus rv; |
- CERTSignedCrl* crl = NULL; |
- |
- /* create a scratch arena */ |
- arena = PORT_NewArena(DER_DEFAULT_CHUNKSIZE); |
- if (arena == NULL) { |
- return (NULL); |
- } |
- |
- /* extract the database key from the cert */ |
- rv = CERT_KeyFromDERCrl(arena, derCrl, &crlKey); |
- if (rv != SECSuccess) { |
- goto loser; |
- } |
- |
- /* find the crl */ |
- crl = SEC_FindCrlByName(handle, &crlKey, type); |
- |
-loser: |
- PORT_FreeArena(arena, PR_FALSE); |
- return (crl); |
-} |
- |
-CERTSignedCrl* |
-SEC_DupCrl(CERTSignedCrl* acrl) |
-{ |
- if (acrl) { |
- PR_ATOMIC_INCREMENT(&acrl->referenceCount); |
- return acrl; |
- } |
- return NULL; |
-} |
- |
-SECStatus |
-SEC_DestroyCrl(CERTSignedCrl* crl) |
-{ |
- if (crl) { |
- if (PR_ATOMIC_DECREMENT(&crl->referenceCount) < 1) { |
- if (crl->slot) { |
- PK11_FreeSlot(crl->slot); |
- } |
- if (GetOpaqueCRLFields(crl) && |
- PR_TRUE == GetOpaqueCRLFields(crl)->heapDER) { |
- SECITEM_FreeItem(crl->derCrl, PR_TRUE); |
- } |
- if (crl->arena) { |
- PORT_FreeArena(crl->arena, PR_FALSE); |
- } |
- } |
- return SECSuccess; |
- } else { |
- return SECFailure; |
- } |
-} |
- |
-SECStatus |
-SEC_LookupCrls(CERTCertDBHandle* handle, CERTCrlHeadNode** nodes, int type) |
-{ |
- CERTCrlHeadNode* head; |
- PLArenaPool* arena = NULL; |
- SECStatus rv; |
- |
- *nodes = NULL; |
- |
- arena = PORT_NewArena(DER_DEFAULT_CHUNKSIZE); |
- if (arena == NULL) { |
- return SECFailure; |
- } |
- |
- /* build a head structure */ |
- head = (CERTCrlHeadNode*)PORT_ArenaAlloc(arena, sizeof(CERTCrlHeadNode)); |
- head->arena = arena; |
- head->first = NULL; |
- head->last = NULL; |
- head->dbhandle = handle; |
- |
- /* Look up the proper crl types */ |
- *nodes = head; |
- |
- rv = PK11_LookupCrls(head, type, NULL); |
- |
- if (rv != SECSuccess) { |
- if (arena) { |
- PORT_FreeArena(arena, PR_FALSE); |
- *nodes = NULL; |
- } |
- } |
- |
- return rv; |
-} |
- |
-/* These functions simply return the address of the above-declared templates. |
-** This is necessary for Windows DLLs. Sigh. |
-*/ |
-SEC_ASN1_CHOOSER_IMPLEMENT(CERT_IssuerAndSNTemplate) |
-SEC_ASN1_CHOOSER_IMPLEMENT(CERT_CrlTemplate) |
-SEC_ASN1_CHOOSER_IMPLEMENT(CERT_SignedCrlTemplate) |
-SEC_ASN1_CHOOSER_IMPLEMENT(CERT_SetOfSignedCrlTemplate) |
- |
-/* CRL cache code starts here */ |
- |
-/* constructor */ |
-static SECStatus CachedCrl_Create(CachedCrl** returned, CERTSignedCrl* crl, |
- CRLOrigin origin); |
-/* destructor */ |
-static SECStatus CachedCrl_Destroy(CachedCrl* crl); |
- |
-/* create hash table of CRL entries */ |
-static SECStatus CachedCrl_Populate(CachedCrl* crlobject); |
- |
-/* empty the cache content */ |
-static SECStatus CachedCrl_Depopulate(CachedCrl* crl); |
- |
-/* are these CRLs the same, as far as the cache is concerned ? |
- Or are they the same token object, but with different DER ? */ |
- |
-static SECStatus CachedCrl_Compare(CachedCrl* a, CachedCrl* b, PRBool* isDupe, |
- PRBool* isUpdated); |
- |
-/* create a DPCache object */ |
-static SECStatus DPCache_Create(CRLDPCache** returned, CERTCertificate* issuer, |
- const SECItem* subject, SECItem* dp); |
- |
-/* destructor for CRL DPCache object */ |
-static SECStatus DPCache_Destroy(CRLDPCache* cache); |
- |
-/* add a new CRL object to the dynamic array of CRLs of the DPCache, and |
- returns the cached CRL object . Needs write access to DPCache. */ |
-static SECStatus DPCache_AddCRL(CRLDPCache* cache, CachedCrl* crl, |
- PRBool* added); |
- |
-/* fetch the CRL for this DP from the PKCS#11 tokens */ |
-static SECStatus DPCache_FetchFromTokens(CRLDPCache* cache, PRTime vfdate, |
- void* wincx); |
- |
-/* update the content of the CRL cache, including fetching of CRLs, and |
- reprocessing with specified issuer and date */ |
-static SECStatus DPCache_GetUpToDate(CRLDPCache* cache, CERTCertificate* issuer, |
- PRBool readlocked, PRTime vfdate, |
- void* wincx); |
- |
-/* returns true if there are CRLs from PKCS#11 slots */ |
-static PRBool DPCache_HasTokenCRLs(CRLDPCache* cache); |
- |
-/* remove CRL at offset specified */ |
-static SECStatus DPCache_RemoveCRL(CRLDPCache* cache, PRUint32 offset); |
- |
-/* Pick best CRL to use . needs write access */ |
-static SECStatus DPCache_SelectCRL(CRLDPCache* cache); |
- |
-/* create an issuer cache object (per CA subject ) */ |
-static SECStatus IssuerCache_Create(CRLIssuerCache** returned, |
- CERTCertificate* issuer, |
- const SECItem* subject, const SECItem* dp); |
- |
-/* destructor for CRL IssuerCache object */ |
-SECStatus IssuerCache_Destroy(CRLIssuerCache* cache); |
- |
-/* add a DPCache to the issuer cache */ |
-static SECStatus IssuerCache_AddDP(CRLIssuerCache* cache, |
- CERTCertificate* issuer, |
- const SECItem* subject, const SECItem* dp, |
- CRLDPCache** newdpc); |
- |
-/* get a particular DPCache object from an IssuerCache */ |
-static CRLDPCache* IssuerCache_GetDPCache(CRLIssuerCache* cache, |
- const SECItem* dp); |
- |
-/* |
-** Pre-allocator hash allocator ops. |
-*/ |
- |
-/* allocate memory for hash table */ |
-static void* PR_CALLBACK |
-PreAllocTable(void* pool, PRSize size) |
-{ |
- PreAllocator* alloc = (PreAllocator*)pool; |
- PORT_Assert(alloc); |
- if (!alloc) { |
- /* no allocator, or buffer full */ |
- return NULL; |
- } |
- if (size > (alloc->len - alloc->used)) { |
- /* initial buffer full, let's use the arena */ |
- alloc->extra += size; |
- return PORT_ArenaAlloc(alloc->arena, size); |
- } |
- /* use the initial buffer */ |
- alloc->used += size; |
- return (char*)alloc->data + alloc->used - size; |
-} |
- |
-/* free hash table memory. |
- Individual PreAllocator elements cannot be freed, so this is a no-op. */ |
-static void PR_CALLBACK |
-PreFreeTable(void* pool, void* item) |
-{ |
-} |
- |
-/* allocate memory for hash table */ |
-static PLHashEntry* PR_CALLBACK |
-PreAllocEntry(void* pool, const void* key) |
-{ |
- return PreAllocTable(pool, sizeof(PLHashEntry)); |
-} |
- |
-/* free hash table entry. |
- Individual PreAllocator elements cannot be freed, so this is a no-op. */ |
-static void PR_CALLBACK |
-PreFreeEntry(void* pool, PLHashEntry* he, PRUintn flag) |
-{ |
-} |
- |
-/* methods required for PL hash table functions */ |
-static PLHashAllocOps preAllocOps = { PreAllocTable, PreFreeTable, |
- PreAllocEntry, PreFreeEntry }; |
- |
-/* destructor for PreAllocator object */ |
-void |
-PreAllocator_Destroy(PreAllocator* PreAllocator) |
-{ |
- if (!PreAllocator) { |
- return; |
- } |
- if (PreAllocator->arena) { |
- PORT_FreeArena(PreAllocator->arena, PR_TRUE); |
- } |
-} |
- |
-/* constructor for PreAllocator object */ |
-PreAllocator* |
-PreAllocator_Create(PRSize size) |
-{ |
- PLArenaPool* arena = NULL; |
- PreAllocator* prebuffer = NULL; |
- arena = PORT_NewArena(DER_DEFAULT_CHUNKSIZE); |
- if (!arena) { |
- return NULL; |
- } |
- prebuffer = (PreAllocator*)PORT_ArenaZAlloc(arena, sizeof(PreAllocator)); |
- if (!prebuffer) { |
- PORT_FreeArena(arena, PR_TRUE); |
- return NULL; |
- } |
- prebuffer->arena = arena; |
- |
- if (size) { |
- prebuffer->len = size; |
- prebuffer->data = PORT_ArenaAlloc(arena, size); |
- if (!prebuffer->data) { |
- PORT_FreeArena(arena, PR_TRUE); |
- return NULL; |
- } |
- } |
- return prebuffer; |
-} |
- |
-/* global Named CRL cache object */ |
-static NamedCRLCache namedCRLCache = { NULL, NULL }; |
- |
-/* global CRL cache object */ |
-static CRLCache crlcache = { NULL, NULL }; |
- |
-/* initial state is off */ |
-static PRBool crlcache_initialized = PR_FALSE; |
- |
-PRTime CRLCache_Empty_TokenFetch_Interval = 60 * 1000000; /* how often |
- to query the tokens for CRL objects, in order to discover new objects, if |
- the cache does not contain any token CRLs . In microseconds */ |
- |
-PRTime CRLCache_TokenRefetch_Interval = 600 * 1000000; /* how often |
- to query the tokens for CRL objects, in order to discover new objects, if |
- the cache already contains token CRLs In microseconds */ |
- |
-PRTime CRLCache_ExistenceCheck_Interval = 60 * 1000000; /* how often to check |
- if a token CRL object still exists. In microseconds */ |
- |
-/* this function is called at NSS initialization time */ |
-SECStatus |
-InitCRLCache(void) |
-{ |
- if (PR_FALSE == crlcache_initialized) { |
- PORT_Assert(NULL == crlcache.lock); |
- PORT_Assert(NULL == crlcache.issuers); |
- PORT_Assert(NULL == namedCRLCache.lock); |
- PORT_Assert(NULL == namedCRLCache.entries); |
- if (crlcache.lock || crlcache.issuers || namedCRLCache.lock || |
- namedCRLCache.entries) { |
- /* CRL cache already partially initialized */ |
- PORT_SetError(SEC_ERROR_LIBRARY_FAILURE); |
- return SECFailure; |
- } |
-#ifdef GLOBAL_RWLOCK |
- crlcache.lock = NSSRWLock_New(NSS_RWLOCK_RANK_NONE, NULL); |
-#else |
- crlcache.lock = PR_NewLock(); |
-#endif |
- namedCRLCache.lock = PR_NewLock(); |
- crlcache.issuers = PL_NewHashTable(0, SECITEM_Hash, SECITEM_HashCompare, |
- PL_CompareValues, NULL, NULL); |
- namedCRLCache.entries = PL_NewHashTable( |
- 0, SECITEM_Hash, SECITEM_HashCompare, PL_CompareValues, NULL, NULL); |
- if (!crlcache.lock || !namedCRLCache.lock || !crlcache.issuers || |
- !namedCRLCache.entries) { |
- if (crlcache.lock) { |
-#ifdef GLOBAL_RWLOCK |
- NSSRWLock_Destroy(crlcache.lock); |
-#else |
- PR_DestroyLock(crlcache.lock); |
-#endif |
- crlcache.lock = NULL; |
- } |
- if (namedCRLCache.lock) { |
- PR_DestroyLock(namedCRLCache.lock); |
- namedCRLCache.lock = NULL; |
- } |
- if (crlcache.issuers) { |
- PL_HashTableDestroy(crlcache.issuers); |
- crlcache.issuers = NULL; |
- } |
- if (namedCRLCache.entries) { |
- PL_HashTableDestroy(namedCRLCache.entries); |
- namedCRLCache.entries = NULL; |
- } |
- |
- return SECFailure; |
- } |
- crlcache_initialized = PR_TRUE; |
- return SECSuccess; |
- } else { |
- PORT_Assert(crlcache.lock); |
- PORT_Assert(crlcache.issuers); |
- if ((NULL == crlcache.lock) || (NULL == crlcache.issuers)) { |
- /* CRL cache not fully initialized */ |
- return SECFailure; |
- } else { |
- /* CRL cache already initialized */ |
- return SECSuccess; |
- } |
- } |
-} |
- |
-/* destructor for CRL DPCache object */ |
-static SECStatus |
-DPCache_Destroy(CRLDPCache* cache) |
-{ |
- PRUint32 i = 0; |
- PORT_Assert(cache); |
- if (!cache) { |
- PORT_Assert(0); |
- PORT_SetError(SEC_ERROR_LIBRARY_FAILURE); |
- return SECFailure; |
- } |
- if (cache->lock) { |
-#ifdef DPC_RWLOCK |
- NSSRWLock_Destroy(cache->lock); |
-#else |
- PR_DestroyLock(cache->lock); |
-#endif |
- } else { |
- PORT_Assert(0); |
- return SECFailure; |
- } |
- /* destroy all our CRL objects */ |
- for (i = 0; i < cache->ncrls; i++) { |
- if (!cache->crls || !cache->crls[i] || |
- SECSuccess != CachedCrl_Destroy(cache->crls[i])) { |
- return SECFailure; |
- } |
- } |
- /* free the array of CRLs */ |
- if (cache->crls) { |
- PORT_Free(cache->crls); |
- } |
- /* destroy the cert */ |
- if (cache->issuerDERCert) { |
- SECITEM_FreeItem(cache->issuerDERCert, PR_TRUE); |
- } |
- /* free the subject */ |
- if (cache->subject) { |
- SECITEM_FreeItem(cache->subject, PR_TRUE); |
- } |
- /* free the distribution points */ |
- if (cache->distributionPoint) { |
- SECITEM_FreeItem(cache->distributionPoint, PR_TRUE); |
- } |
- PORT_Free(cache); |
- return SECSuccess; |
-} |
- |
-/* destructor for CRL IssuerCache object */ |
-SECStatus |
-IssuerCache_Destroy(CRLIssuerCache* cache) |
-{ |
- PORT_Assert(cache); |
- if (!cache) { |
- PORT_Assert(0); |
- PORT_SetError(SEC_ERROR_LIBRARY_FAILURE); |
- return SECFailure; |
- } |
-#ifdef XCRL |
- if (cache->lock) { |
- NSSRWLock_Destroy(cache->lock); |
- } else { |
- PORT_Assert(0); |
- PORT_SetError(SEC_ERROR_LIBRARY_FAILURE); |
- return SECFailure; |
- } |
- if (cache->issuer) { |
- CERT_DestroyCertificate(cache->issuer); |
- } |
-#endif |
- /* free the subject */ |
- if (cache->subject) { |
- SECITEM_FreeItem(cache->subject, PR_TRUE); |
- } |
- if (SECSuccess != DPCache_Destroy(cache->dpp)) { |
- PORT_Assert(0); |
- return SECFailure; |
- } |
- PORT_Free(cache); |
- return SECSuccess; |
-} |
- |
-/* create a named CRL entry object */ |
-static SECStatus |
-NamedCRLCacheEntry_Create(NamedCRLCacheEntry** returned) |
-{ |
- NamedCRLCacheEntry* entry = NULL; |
- if (!returned) { |
- PORT_Assert(0); |
- PORT_SetError(SEC_ERROR_LIBRARY_FAILURE); |
- return SECFailure; |
- } |
- *returned = NULL; |
- entry = (NamedCRLCacheEntry*)PORT_ZAlloc(sizeof(NamedCRLCacheEntry)); |
- if (!entry) { |
- return SECFailure; |
- } |
- *returned = entry; |
- return SECSuccess; |
-} |
- |
-/* destroy a named CRL entry object */ |
-static SECStatus |
-NamedCRLCacheEntry_Destroy(NamedCRLCacheEntry* entry) |
-{ |
- if (!entry) { |
- PORT_Assert(0); |
- PORT_SetError(SEC_ERROR_LIBRARY_FAILURE); |
- return SECFailure; |
- } |
- if (entry->crl) { |
- /* named CRL cache owns DER memory */ |
- SECITEM_ZfreeItem(entry->crl, PR_TRUE); |
- } |
- if (entry->canonicalizedName) { |
- SECITEM_FreeItem(entry->canonicalizedName, PR_TRUE); |
- } |
- PORT_Free(entry); |
- return SECSuccess; |
-} |
- |
-/* callback function used in hash table destructor */ |
-static PRIntn PR_CALLBACK |
-FreeIssuer(PLHashEntry* he, PRIntn i, void* arg) |
-{ |
- CRLIssuerCache* issuer = NULL; |
- SECStatus* rv = (SECStatus*)arg; |
- |
- PORT_Assert(he); |
- if (!he) { |
- return HT_ENUMERATE_NEXT; |
- } |
- issuer = (CRLIssuerCache*)he->value; |
- PORT_Assert(issuer); |
- if (issuer) { |
- if (SECSuccess != IssuerCache_Destroy(issuer)) { |
- PORT_Assert(rv); |
- if (rv) { |
- *rv = SECFailure; |
- } |
- return HT_ENUMERATE_NEXT; |
- } |
- } |
- return HT_ENUMERATE_NEXT; |
-} |
- |
-/* callback function used in hash table destructor */ |
-static PRIntn PR_CALLBACK |
-FreeNamedEntries(PLHashEntry* he, PRIntn i, void* arg) |
-{ |
- NamedCRLCacheEntry* entry = NULL; |
- SECStatus* rv = (SECStatus*)arg; |
- |
- PORT_Assert(he); |
- if (!he) { |
- return HT_ENUMERATE_NEXT; |
- } |
- entry = (NamedCRLCacheEntry*)he->value; |
- PORT_Assert(entry); |
- if (entry) { |
- if (SECSuccess != NamedCRLCacheEntry_Destroy(entry)) { |
- PORT_Assert(rv); |
- if (rv) { |
- *rv = SECFailure; |
- } |
- return HT_ENUMERATE_NEXT; |
- } |
- } |
- return HT_ENUMERATE_NEXT; |
-} |
- |
-/* needs to be called at NSS shutdown time |
- This will destroy the global CRL cache, including |
- - the hash table of issuer cache objects |
- - the issuer cache objects |
- - DPCache objects in issuer cache objects */ |
-SECStatus |
-ShutdownCRLCache(void) |
-{ |
- SECStatus rv = SECSuccess; |
- if (PR_FALSE == crlcache_initialized && !crlcache.lock && |
- !crlcache.issuers) { |
- /* CRL cache has already been shut down */ |
- return SECSuccess; |
- } |
- if (PR_TRUE == crlcache_initialized && |
- (!crlcache.lock || !crlcache.issuers || !namedCRLCache.lock || |
- !namedCRLCache.entries)) { |
- /* CRL cache has partially been shut down */ |
- PORT_SetError(SEC_ERROR_LIBRARY_FAILURE); |
- return SECFailure; |
- } |
- /* empty the CRL cache */ |
- /* free the issuers */ |
- PL_HashTableEnumerateEntries(crlcache.issuers, &FreeIssuer, &rv); |
- /* free the hash table of issuers */ |
- PL_HashTableDestroy(crlcache.issuers); |
- crlcache.issuers = NULL; |
-/* free the global lock */ |
-#ifdef GLOBAL_RWLOCK |
- NSSRWLock_Destroy(crlcache.lock); |
-#else |
- PR_DestroyLock(crlcache.lock); |
-#endif |
- crlcache.lock = NULL; |
- |
- /* empty the named CRL cache. This must be done after freeing the CRL |
- * cache, since some CRLs in this cache are in the memory for the other */ |
- /* free the entries */ |
- PL_HashTableEnumerateEntries(namedCRLCache.entries, &FreeNamedEntries, &rv); |
- /* free the hash table of issuers */ |
- PL_HashTableDestroy(namedCRLCache.entries); |
- namedCRLCache.entries = NULL; |
- /* free the global lock */ |
- PR_DestroyLock(namedCRLCache.lock); |
- namedCRLCache.lock = NULL; |
- |
- crlcache_initialized = PR_FALSE; |
- return rv; |
-} |
- |
-/* add a new CRL object to the dynamic array of CRLs of the DPCache, and |
- returns the cached CRL object . Needs write access to DPCache. */ |
-static SECStatus |
-DPCache_AddCRL(CRLDPCache* cache, CachedCrl* newcrl, PRBool* added) |
-{ |
- CachedCrl** newcrls = NULL; |
- PRUint32 i = 0; |
- PORT_Assert(cache); |
- PORT_Assert(newcrl); |
- PORT_Assert(added); |
- if (!cache || !newcrl || !added) { |
- PORT_SetError(SEC_ERROR_LIBRARY_FAILURE); |
- return SECFailure; |
- } |
- |
- *added = PR_FALSE; |
- /* before adding a new CRL, check if it is a duplicate */ |
- for (i = 0; i < cache->ncrls; i++) { |
- CachedCrl* existing = NULL; |
- SECStatus rv = SECSuccess; |
- PRBool dupe = PR_FALSE, updated = PR_FALSE; |
- if (!cache->crls) { |
- PORT_Assert(0); |
- return SECFailure; |
- } |
- existing = cache->crls[i]; |
- if (!existing) { |
- PORT_Assert(0); |
- return SECFailure; |
- } |
- rv = CachedCrl_Compare(existing, newcrl, &dupe, &updated); |
- if (SECSuccess != rv) { |
- PORT_Assert(0); |
- PORT_SetError(SEC_ERROR_LIBRARY_FAILURE); |
- return SECFailure; |
- } |
- if (PR_TRUE == dupe) { |
- /* dupe */ |
- PORT_SetError(SEC_ERROR_CRL_ALREADY_EXISTS); |
- return SECSuccess; |
- } |
- if (PR_TRUE == updated) { |
- /* this token CRL is in the same slot and has the same object ID, |
- but different content. We need to remove the old object */ |
- if (SECSuccess != DPCache_RemoveCRL(cache, i)) { |
- PORT_Assert(0); |
- PORT_SetError(SEC_ERROR_LIBRARY_FAILURE); |
- return PR_FALSE; |
- } |
- } |
- } |
- |
- newcrls = (CachedCrl**)PORT_Realloc(cache->crls, (cache->ncrls + 1) * |
- sizeof(CachedCrl*)); |
- if (!newcrls) { |
- return SECFailure; |
- } |
- cache->crls = newcrls; |
- cache->ncrls++; |
- cache->crls[cache->ncrls - 1] = newcrl; |
- *added = PR_TRUE; |
- return SECSuccess; |
-} |
- |
-/* remove CRL at offset specified */ |
-static SECStatus |
-DPCache_RemoveCRL(CRLDPCache* cache, PRUint32 offset) |
-{ |
- CachedCrl* acrl = NULL; |
- PORT_Assert(cache); |
- if (!cache || (!cache->crls) || (!(offset < cache->ncrls))) { |
- PORT_SetError(SEC_ERROR_LIBRARY_FAILURE); |
- return SECFailure; |
- } |
- acrl = cache->crls[offset]; |
- PORT_Assert(acrl); |
- if (!acrl) { |
- PORT_SetError(SEC_ERROR_LIBRARY_FAILURE); |
- return SECFailure; |
- } |
- cache->crls[offset] = cache->crls[cache->ncrls - 1]; |
- cache->crls[cache->ncrls - 1] = NULL; |
- cache->ncrls--; |
- if (cache->selected == acrl) { |
- cache->selected = NULL; |
- } |
- if (SECSuccess != CachedCrl_Destroy(acrl)) { |
- PORT_Assert(0); |
- PORT_SetError(SEC_ERROR_LIBRARY_FAILURE); |
- return SECFailure; |
- } |
- return SECSuccess; |
-} |
- |
-/* check whether a CRL object stored in a PKCS#11 token still exists in |
- that token . This has to be efficient (the entire CRL value cannot be |
- transferred accross the token boundaries), so this is accomplished by |
- simply fetching the subject attribute and making sure it hasn't changed . |
- Note that technically, the CRL object could have been replaced with a new |
- PKCS#11 object of the same ID and subject (which actually happens in |
- softoken), but this function has no way of knowing that the object |
- value changed, since CKA_VALUE isn't checked. */ |
-static PRBool |
-TokenCRLStillExists(CERTSignedCrl* crl) |
-{ |
- NSSItem newsubject; |
- SECItem subject; |
- CK_ULONG crl_class; |
- PRStatus status; |
- PK11SlotInfo* slot = NULL; |
- nssCryptokiObject instance; |
- NSSArena* arena; |
- PRBool xstatus = PR_TRUE; |
- SECItem* oldSubject = NULL; |
- |
- PORT_Assert(crl); |
- if (!crl) { |
- return PR_FALSE; |
- } |
- slot = crl->slot; |
- PORT_Assert(crl->slot); |
- if (!slot) { |
- return PR_FALSE; |
- } |
- oldSubject = &crl->crl.derName; |
- PORT_Assert(oldSubject); |
- if (!oldSubject) { |
- return PR_FALSE; |
- } |
- |
- /* query subject and type attributes in order to determine if the |
- object has been deleted */ |
- |
- /* first, make an nssCryptokiObject */ |
- instance.handle = crl->pkcs11ID; |
- PORT_Assert(instance.handle); |
- if (!instance.handle) { |
- return PR_FALSE; |
- } |
- instance.token = PK11Slot_GetNSSToken(slot); |
- PORT_Assert(instance.token); |
- if (!instance.token) { |
- return PR_FALSE; |
- } |
- instance.isTokenObject = PR_TRUE; |
- instance.label = NULL; |
- |
- arena = NSSArena_Create(); |
- PORT_Assert(arena); |
- if (!arena) { |
- return PR_FALSE; |
- } |
- |
- status = |
- nssCryptokiCRL_GetAttributes(&instance, NULL, /* XXX sessionOpt */ |
- arena, NULL, &newsubject, /* subject */ |
- &crl_class, /* class */ |
- NULL, NULL); |
- if (PR_SUCCESS == status) { |
- subject.data = newsubject.data; |
- subject.len = newsubject.size; |
- if (SECITEM_CompareItem(oldSubject, &subject) != SECEqual) { |
- xstatus = PR_FALSE; |
- } |
- if (CKO_NETSCAPE_CRL != crl_class) { |
- xstatus = PR_FALSE; |
- } |
- } else { |
- xstatus = PR_FALSE; |
- } |
- NSSArena_Destroy(arena); |
- return xstatus; |
-} |
- |
-/* verify the signature of a CRL against its issuer at a given date */ |
-static SECStatus |
-CERT_VerifyCRL(CERTSignedCrl* crlobject, CERTCertificate* issuer, PRTime vfdate, |
- void* wincx) |
-{ |
- return CERT_VerifySignedData(&crlobject->signatureWrap, issuer, vfdate, |
- wincx); |
-} |
- |
-/* verify a CRL and update cache state */ |
-static SECStatus |
-CachedCrl_Verify(CRLDPCache* cache, CachedCrl* crlobject, PRTime vfdate, |
- void* wincx) |
-{ |
- /* Check if it is an invalid CRL |
- if we got a bad CRL, we want to cache it in order to avoid |
- subsequent fetches of this same identical bad CRL. We set |
- the cache to the invalid state to ensure that all certs on this |
- DP are considered to have unknown status from now on. The cache |
- object will remain in this state until the bad CRL object |
- is removed from the token it was fetched from. If the cause |
- of the failure is that we didn't have the issuer cert to |
- verify the signature, this state can be cleared when |
- the issuer certificate becomes available if that causes the |
- signature to verify */ |
- |
- if (!cache || !crlobject) { |
- PORT_Assert(0); |
- PORT_SetError(SEC_ERROR_LIBRARY_FAILURE); |
- return SECFailure; |
- } |
- if (PR_TRUE == GetOpaqueCRLFields(crlobject->crl)->decodingError) { |
- crlobject->sigChecked = PR_TRUE; /* we can never verify a CRL |
- with bogus DER. Mark it checked so we won't try again */ |
- PORT_SetError(SEC_ERROR_BAD_DER); |
- return SECSuccess; |
- } else { |
- SECStatus signstatus = SECFailure; |
- if (cache->issuerDERCert) { |
- CERTCertificate* issuer = CERT_NewTempCertificate( |
- cache->dbHandle, cache->issuerDERCert, NULL, PR_FALSE, PR_TRUE); |
- |
- if (issuer) { |
- signstatus = |
- CERT_VerifyCRL(crlobject->crl, issuer, vfdate, wincx); |
- CERT_DestroyCertificate(issuer); |
- } |
- } |
- if (SECSuccess != signstatus) { |
- if (!cache->issuerDERCert) { |
- /* we tried to verify without an issuer cert . This is |
- because this CRL came through a call to SEC_FindCrlByName. |
- So, we don't cache this verification failure. We'll try |
- to verify the CRL again when a certificate from that issuer |
- becomes available */ |
- } else { |
- crlobject->sigChecked = PR_TRUE; |
- } |
- PORT_SetError(SEC_ERROR_CRL_BAD_SIGNATURE); |
- return SECSuccess; |
- } else { |
- crlobject->sigChecked = PR_TRUE; |
- crlobject->sigValid = PR_TRUE; |
- } |
- } |
- |
- return SECSuccess; |
-} |
- |
-/* fetch the CRLs for this DP from the PKCS#11 tokens */ |
-static SECStatus |
-DPCache_FetchFromTokens(CRLDPCache* cache, PRTime vfdate, void* wincx) |
-{ |
- SECStatus rv = SECSuccess; |
- CERTCrlHeadNode head; |
- if (!cache) { |
- PORT_Assert(0); |
- PORT_SetError(SEC_ERROR_LIBRARY_FAILURE); |
- return SECFailure; |
- } |
- /* first, initialize list */ |
- memset(&head, 0, sizeof(head)); |
- head.arena = PORT_NewArena(DER_DEFAULT_CHUNKSIZE); |
- rv = pk11_RetrieveCrls(&head, cache->subject, wincx); |
- |
- /* if this function fails, something very wrong happened, such as an out |
- of memory error during CRL decoding. We don't want to proceed and must |
- mark the cache object invalid */ |
- if (SECFailure == rv) { |
- /* fetch failed, add error bit */ |
- cache->invalid |= CRL_CACHE_LAST_FETCH_FAILED; |
- } else { |
- /* fetch was successful, clear this error bit */ |
- cache->invalid &= (~CRL_CACHE_LAST_FETCH_FAILED); |
- } |
- |
- /* add any CRLs found to our array */ |
- if (SECSuccess == rv) { |
- CERTCrlNode* crlNode = NULL; |
- |
- for (crlNode = head.first; crlNode; crlNode = crlNode->next) { |
- CachedCrl* returned = NULL; |
- CERTSignedCrl* crlobject = crlNode->crl; |
- if (!crlobject) { |
- PORT_Assert(0); |
- continue; |
- } |
- rv = CachedCrl_Create(&returned, crlobject, CRL_OriginToken); |
- if (SECSuccess == rv) { |
- PRBool added = PR_FALSE; |
- rv = DPCache_AddCRL(cache, returned, &added); |
- if (PR_TRUE != added) { |
- rv = CachedCrl_Destroy(returned); |
- returned = NULL; |
- } else if (vfdate) { |
- rv = CachedCrl_Verify(cache, returned, vfdate, wincx); |
- } |
- } else { |
- /* not enough memory to add the CRL to the cache. mark it |
- invalid so we will try again . */ |
- cache->invalid |= CRL_CACHE_LAST_FETCH_FAILED; |
- } |
- if (SECFailure == rv) { |
- break; |
- } |
- } |
- } |
- |
- if (head.arena) { |
- CERTCrlNode* crlNode = NULL; |
- /* clean up the CRL list in case we got a partial one |
- during a failed fetch */ |
- for (crlNode = head.first; crlNode; crlNode = crlNode->next) { |
- if (crlNode->crl) { |
- SEC_DestroyCrl(crlNode->crl); /* free the CRL. Either it got |
- added to the cache and the refcount got bumped, or not, and |
- thus we need to free its RAM */ |
- } |
- } |
- PORT_FreeArena(head.arena, PR_FALSE); /* destroy CRL list */ |
- } |
- |
- return rv; |
-} |
- |
-static SECStatus |
-CachedCrl_GetEntry(CachedCrl* crl, const SECItem* sn, CERTCrlEntry** returned) |
-{ |
- CERTCrlEntry* acrlEntry; |
- |
- PORT_Assert(crl); |
- PORT_Assert(crl->entries); |
- PORT_Assert(sn); |
- PORT_Assert(returned); |
- if (!crl || !sn || !returned || !crl->entries) { |
- PORT_SetError(SEC_ERROR_INVALID_ARGS); |
- return SECFailure; |
- } |
- acrlEntry = PL_HashTableLookup(crl->entries, (void*)sn); |
- if (acrlEntry) { |
- *returned = acrlEntry; |
- } else { |
- *returned = NULL; |
- } |
- return SECSuccess; |
-} |
- |
-/* check if a particular SN is in the CRL cache and return its entry */ |
-dpcacheStatus |
-DPCache_Lookup(CRLDPCache* cache, const SECItem* sn, CERTCrlEntry** returned) |
-{ |
- SECStatus rv; |
- if (!cache || !sn || !returned) { |
- PORT_SetError(SEC_ERROR_INVALID_ARGS); |
- /* no cache or SN to look up, or no way to return entry */ |
- return dpcacheCallerError; |
- } |
- *returned = NULL; |
- if (0 != cache->invalid) { |
- /* the cache contains a bad CRL, or there was a CRL fetching error. */ |
- PORT_SetError(SEC_ERROR_CRL_INVALID); |
- return dpcacheInvalidCacheError; |
- } |
- if (!cache->selected) { |
- /* no CRL means no entry to return. This is OK, except for |
- * NIST policy */ |
- return dpcacheEmpty; |
- } |
- rv = CachedCrl_GetEntry(cache->selected, sn, returned); |
- if (SECSuccess != rv) { |
- return dpcacheLookupError; |
- } else { |
- if (*returned) { |
- return dpcacheFoundEntry; |
- } else { |
- return dpcacheNoEntry; |
- } |
- } |
-} |
- |
-#if defined(DPC_RWLOCK) |
- |
-#define DPCache_LockWrite() \ |
- { \ |
- if (readlocked) { \ |
- NSSRWLock_UnlockRead(cache->lock); \ |
- } \ |
- NSSRWLock_LockWrite(cache->lock); \ |
- } |
- |
-#define DPCache_UnlockWrite() \ |
- { \ |
- if (readlocked) { \ |
- NSSRWLock_LockRead(cache->lock); \ |
- } \ |
- NSSRWLock_UnlockWrite(cache->lock); \ |
- } |
- |
-#else |
- |
-/* with a global lock, we are always locked for read before we need write |
- access, so do nothing */ |
- |
-#define DPCache_LockWrite() \ |
- { \ |
- } |
- |
-#define DPCache_UnlockWrite() \ |
- { \ |
- } |
- |
-#endif |
- |
-/* update the content of the CRL cache, including fetching of CRLs, and |
- reprocessing with specified issuer and date . We are always holding |
- either the read or write lock on DPCache upon entry. */ |
-static SECStatus |
-DPCache_GetUpToDate(CRLDPCache* cache, CERTCertificate* issuer, |
- PRBool readlocked, PRTime vfdate, void* wincx) |
-{ |
- /* Update the CRLDPCache now. We don't cache token CRL lookup misses |
- yet, as we have no way of getting notified of new PKCS#11 object |
- creation that happens in a token */ |
- SECStatus rv = SECSuccess; |
- PRUint32 i = 0; |
- PRBool forcedrefresh = PR_FALSE; |
- PRBool dirty = PR_FALSE; /* whether something was changed in the |
- cache state during this update cycle */ |
- PRBool hastokenCRLs = PR_FALSE; |
- PRTime now = 0; |
- PRTime lastfetch = 0; |
- PRBool mustunlock = PR_FALSE; |
- |
- if (!cache) { |
- PORT_SetError(SEC_ERROR_LIBRARY_FAILURE); |
- return SECFailure; |
- } |
- |
- /* first, make sure we have obtained all the CRLs we need. |
- We do an expensive token fetch in the following cases : |
- 1) cache is empty because no fetch was ever performed yet |
- 2) cache is explicitly set to refresh state |
- 3) cache is in invalid state because last fetch failed |
- 4) cache contains no token CRLs, and it's been more than one minute |
- since the last fetch |
- 5) cache contains token CRLs, and it's been more than 10 minutes since |
- the last fetch |
- */ |
- forcedrefresh = cache->refresh; |
- lastfetch = cache->lastfetch; |
- if (PR_TRUE != forcedrefresh && |
- (!(cache->invalid & CRL_CACHE_LAST_FETCH_FAILED))) { |
- now = PR_Now(); |
- hastokenCRLs = DPCache_HasTokenCRLs(cache); |
- } |
- if ((0 == lastfetch) || |
- |
- (PR_TRUE == forcedrefresh) || |
- |
- (cache->invalid & CRL_CACHE_LAST_FETCH_FAILED) || |
- |
- ((PR_FALSE == hastokenCRLs) && |
- ((now - cache->lastfetch > CRLCache_Empty_TokenFetch_Interval) || |
- (now < cache->lastfetch))) || |
- |
- ((PR_TRUE == hastokenCRLs) && |
- ((now - cache->lastfetch > CRLCache_TokenRefetch_Interval) || |
- (now < cache->lastfetch)))) { |
- /* the cache needs to be refreshed, and/or we had zero CRL for this |
- DP. Try to get one from PKCS#11 tokens */ |
- DPCache_LockWrite(); |
- /* check if another thread updated before us, and skip update if so */ |
- if (lastfetch == cache->lastfetch) { |
- /* we are the first */ |
- rv = DPCache_FetchFromTokens(cache, vfdate, wincx); |
- if (PR_TRUE == cache->refresh) { |
- cache->refresh = PR_FALSE; /* clear refresh state */ |
- } |
- dirty = PR_TRUE; |
- cache->lastfetch = PR_Now(); |
- } |
- DPCache_UnlockWrite(); |
- } |
- |
- /* now, make sure we have no extraneous CRLs (deleted token objects) |
- we'll do this inexpensive existence check either |
- 1) if there was a token object fetch |
- 2) every minute */ |
- if ((PR_TRUE != dirty) && (!now)) { |
- now = PR_Now(); |
- } |
- if ((PR_TRUE == dirty) || |
- ((now - cache->lastcheck > CRLCache_ExistenceCheck_Interval) || |
- (now < cache->lastcheck))) { |
- PRTime lastcheck = cache->lastcheck; |
- mustunlock = PR_FALSE; |
- /* check if all CRLs still exist */ |
- for (i = 0; (i < cache->ncrls); i++) { |
- CachedCrl* savcrl = cache->crls[i]; |
- if ((!savcrl) || (savcrl && CRL_OriginToken != savcrl->origin)) { |
- /* we only want to check token CRLs */ |
- continue; |
- } |
- if ((PR_TRUE != TokenCRLStillExists(savcrl->crl))) { |
- |
- /* this CRL is gone */ |
- if (PR_TRUE != mustunlock) { |
- DPCache_LockWrite(); |
- mustunlock = PR_TRUE; |
- } |
- /* first, we need to check if another thread did an update |
- before we did */ |
- if (lastcheck == cache->lastcheck) { |
- /* the CRL is gone. And we are the one to do the update */ |
- DPCache_RemoveCRL(cache, i); |
- dirty = PR_TRUE; |
- } |
- /* stay locked here intentionally so we do all the other |
- updates in this thread for the remaining CRLs */ |
- } |
- } |
- if (PR_TRUE == mustunlock) { |
- cache->lastcheck = PR_Now(); |
- DPCache_UnlockWrite(); |
- mustunlock = PR_FALSE; |
- } |
- } |
- |
- /* add issuer certificate if it was previously unavailable */ |
- if (issuer && (NULL == cache->issuerDERCert) && |
- (SECSuccess == CERT_CheckCertUsage(issuer, KU_CRL_SIGN))) { |
- /* if we didn't have a valid issuer cert yet, but we do now. add it */ |
- DPCache_LockWrite(); |
- if (!cache->issuerDERCert) { |
- dirty = PR_TRUE; |
- cache->dbHandle = issuer->dbhandle; |
- cache->issuerDERCert = SECITEM_DupItem(&issuer->derCert); |
- } |
- DPCache_UnlockWrite(); |
- } |
- |
- /* verify CRLs that couldn't be checked when inserted into the cache |
- because the issuer cert or a verification date was unavailable. |
- These are CRLs that were inserted into the cache through |
- SEC_FindCrlByName, or through manual insertion, rather than through a |
- certificate verification (CERT_CheckCRL) */ |
- |
- if (cache->issuerDERCert && vfdate) { |
- mustunlock = PR_FALSE; |
- /* re-process all unverified CRLs */ |
- for (i = 0; i < cache->ncrls; i++) { |
- CachedCrl* savcrl = cache->crls[i]; |
- if (!savcrl) { |
- continue; |
- } |
- if (PR_TRUE != savcrl->sigChecked) { |
- if (!mustunlock) { |
- DPCache_LockWrite(); |
- mustunlock = PR_TRUE; |
- } |
- /* first, we need to check if another thread updated |
- it before we did, and abort if it has been modified since |
- we acquired the lock. Make sure first that the CRL is still |
- in the array at the same position */ |
- if ((i < cache->ncrls) && (savcrl == cache->crls[i]) && |
- (PR_TRUE != savcrl->sigChecked)) { |
- /* the CRL is still there, unverified. Do it */ |
- CachedCrl_Verify(cache, savcrl, vfdate, wincx); |
- dirty = PR_TRUE; |
- } |
- /* stay locked here intentionally so we do all the other |
- updates in this thread for the remaining CRLs */ |
- } |
- if (mustunlock && !dirty) { |
- DPCache_UnlockWrite(); |
- mustunlock = PR_FALSE; |
- } |
- } |
- } |
- |
- if (dirty || cache->mustchoose) { |
- /* changes to the content of the CRL cache necessitate examining all |
- CRLs for selection of the most appropriate one to cache */ |
- if (!mustunlock) { |
- DPCache_LockWrite(); |
- mustunlock = PR_TRUE; |
- } |
- DPCache_SelectCRL(cache); |
- cache->mustchoose = PR_FALSE; |
- } |
- if (mustunlock) |
- DPCache_UnlockWrite(); |
- |
- return rv; |
-} |
- |
-/* callback for qsort to sort by thisUpdate */ |
-static int |
-SortCRLsByThisUpdate(const void* arg1, const void* arg2) |
-{ |
- PRTime timea, timeb; |
- SECStatus rv = SECSuccess; |
- CachedCrl *a, *b; |
- |
- a = *(CachedCrl**)arg1; |
- b = *(CachedCrl**)arg2; |
- |
- if (!a || !b) { |
- PORT_Assert(0); |
- PORT_SetError(SEC_ERROR_LIBRARY_FAILURE); |
- rv = SECFailure; |
- } |
- |
- if (SECSuccess == rv) { |
- rv = DER_DecodeTimeChoice(&timea, &a->crl->crl.lastUpdate); |
- } |
- if (SECSuccess == rv) { |
- rv = DER_DecodeTimeChoice(&timeb, &b->crl->crl.lastUpdate); |
- } |
- if (SECSuccess == rv) { |
- if (timea > timeb) { |
- return 1; /* a is better than b */ |
- } |
- if (timea < timeb) { |
- return -1; /* a is not as good as b */ |
- } |
- } |
- |
- /* if they are equal, or if all else fails, use pointer differences */ |
- PORT_Assert(a != b); /* they should never be equal */ |
- return a > b ? 1 : -1; |
-} |
- |
-/* callback for qsort to sort a set of disparate CRLs, some of which are |
- invalid DER or failed signature check. |
- |
- Validated CRLs are differentiated by thisUpdate . |
- Validated CRLs are preferred over non-validated CRLs . |
- Proper DER CRLs are preferred over non-DER data . |
-*/ |
-static int |
-SortImperfectCRLs(const void* arg1, const void* arg2) |
-{ |
- CachedCrl *a, *b; |
- |
- a = *(CachedCrl**)arg1; |
- b = *(CachedCrl**)arg2; |
- |
- if (!a || !b) { |
- PORT_SetError(SEC_ERROR_LIBRARY_FAILURE); |
- PORT_Assert(0); |
- } else { |
- PRBool aDecoded = PR_FALSE, bDecoded = PR_FALSE; |
- if ((PR_TRUE == a->sigValid) && (PR_TRUE == b->sigValid)) { |
- /* both CRLs have been validated, choose the latest one */ |
- return SortCRLsByThisUpdate(arg1, arg2); |
- } |
- if (PR_TRUE == a->sigValid) { |
- return 1; /* a is greater than b */ |
- } |
- if (PR_TRUE == b->sigValid) { |
- return -1; /* a is not as good as b */ |
- } |
- aDecoded = GetOpaqueCRLFields(a->crl)->decodingError; |
- bDecoded = GetOpaqueCRLFields(b->crl)->decodingError; |
- /* neither CRL had its signature check pass */ |
- if ((PR_FALSE == aDecoded) && (PR_FALSE == bDecoded)) { |
- /* both CRLs are proper DER, choose the latest one */ |
- return SortCRLsByThisUpdate(arg1, arg2); |
- } |
- if (PR_FALSE == aDecoded) { |
- return 1; /* a is better than b */ |
- } |
- if (PR_FALSE == bDecoded) { |
- return -1; /* a is not as good as b */ |
- } |
- /* both are invalid DER. sigh. */ |
- } |
- /* if they are equal, or if all else fails, use pointer differences */ |
- PORT_Assert(a != b); /* they should never be equal */ |
- return a > b ? 1 : -1; |
-} |
- |
-/* Pick best CRL to use . needs write access */ |
-static SECStatus |
-DPCache_SelectCRL(CRLDPCache* cache) |
-{ |
- PRUint32 i; |
- PRBool valid = PR_TRUE; |
- CachedCrl* selected = NULL; |
- |
- PORT_Assert(cache); |
- if (!cache) { |
- PORT_SetError(SEC_ERROR_LIBRARY_FAILURE); |
- return SECFailure; |
- } |
- /* if any invalid CRL is present, then the CRL cache is |
- considered invalid, for security reasons */ |
- for (i = 0; i < cache->ncrls; i++) { |
- if (!cache->crls[i] || !cache->crls[i]->sigChecked || |
- !cache->crls[i]->sigValid) { |
- valid = PR_FALSE; |
- break; |
- } |
- } |
- if (PR_TRUE == valid) { |
- /* all CRLs are valid, clear this error */ |
- cache->invalid &= (~CRL_CACHE_INVALID_CRLS); |
- } else { |
- /* some CRLs are invalid, set this error */ |
- cache->invalid |= CRL_CACHE_INVALID_CRLS; |
- } |
- |
- if (cache->invalid) { |
- /* cache is in an invalid state, so reset it */ |
- if (cache->selected) { |
- cache->selected = NULL; |
- } |
- /* also sort the CRLs imperfectly */ |
- qsort(cache->crls, cache->ncrls, sizeof(CachedCrl*), SortImperfectCRLs); |
- return SECSuccess; |
- } |
- /* all CRLs are good, sort them by thisUpdate */ |
- qsort(cache->crls, cache->ncrls, sizeof(CachedCrl*), SortCRLsByThisUpdate); |
- |
- if (cache->ncrls) { |
- /* pick the newest CRL */ |
- selected = cache->crls[cache->ncrls - 1]; |
- |
- /* and populate the cache */ |
- if (SECSuccess != CachedCrl_Populate(selected)) { |
- return SECFailure; |
- } |
- } |
- |
- cache->selected = selected; |
- |
- return SECSuccess; |
-} |
- |
-/* initialize a DPCache object */ |
-static SECStatus |
-DPCache_Create(CRLDPCache** returned, CERTCertificate* issuer, |
- const SECItem* subject, SECItem* dp) |
-{ |
- CRLDPCache* cache = NULL; |
- PORT_Assert(returned); |
- /* issuer and dp are allowed to be NULL */ |
- if (!returned || !subject) { |
- PORT_Assert(0); |
- PORT_SetError(SEC_ERROR_LIBRARY_FAILURE); |
- return SECFailure; |
- } |
- *returned = NULL; |
- cache = PORT_ZAlloc(sizeof(CRLDPCache)); |
- if (!cache) { |
- return SECFailure; |
- } |
-#ifdef DPC_RWLOCK |
- cache->lock = NSSRWLock_New(NSS_RWLOCK_RANK_NONE, NULL); |
-#else |
- cache->lock = PR_NewLock(); |
-#endif |
- if (!cache->lock) { |
- PORT_Free(cache); |
- return SECFailure; |
- } |
- if (issuer) { |
- cache->dbHandle = issuer->dbhandle; |
- cache->issuerDERCert = SECITEM_DupItem(&issuer->derCert); |
- } |
- cache->distributionPoint = SECITEM_DupItem(dp); |
- cache->subject = SECITEM_DupItem(subject); |
- cache->lastfetch = 0; |
- cache->lastcheck = 0; |
- *returned = cache; |
- return SECSuccess; |
-} |
- |
-/* create an issuer cache object (per CA subject ) */ |
-static SECStatus |
-IssuerCache_Create(CRLIssuerCache** returned, CERTCertificate* issuer, |
- const SECItem* subject, const SECItem* dp) |
-{ |
- SECStatus rv = SECSuccess; |
- CRLIssuerCache* cache = NULL; |
- PORT_Assert(returned); |
- PORT_Assert(subject); |
- /* issuer and dp are allowed to be NULL */ |
- if (!returned || !subject) { |
- PORT_Assert(0); |
- PORT_SetError(SEC_ERROR_LIBRARY_FAILURE); |
- return SECFailure; |
- } |
- *returned = NULL; |
- cache = (CRLIssuerCache*)PORT_ZAlloc(sizeof(CRLIssuerCache)); |
- if (!cache) { |
- return SECFailure; |
- } |
- cache->subject = SECITEM_DupItem(subject); |
-#ifdef XCRL |
- cache->lock = NSSRWLock_New(NSS_RWLOCK_RANK_NONE, NULL); |
- if (!cache->lock) { |
- rv = SECFailure; |
- } |
- if (SECSuccess == rv && issuer) { |
- cache->issuer = CERT_DupCertificate(issuer); |
- if (!cache->issuer) { |
- rv = SECFailure; |
- } |
- } |
-#endif |
- if (SECSuccess != rv) { |
- PORT_Assert(SECSuccess == IssuerCache_Destroy(cache)); |
- return SECFailure; |
- } |
- *returned = cache; |
- return SECSuccess; |
-} |
- |
-/* add a DPCache to the issuer cache */ |
-static SECStatus |
-IssuerCache_AddDP(CRLIssuerCache* cache, CERTCertificate* issuer, |
- const SECItem* subject, const SECItem* dp, |
- CRLDPCache** newdpc) |
-{ |
- /* now create the required DP cache object */ |
- if (!cache || !subject || !newdpc) { |
- PORT_Assert(0); |
- PORT_SetError(SEC_ERROR_LIBRARY_FAILURE); |
- return SECFailure; |
- } |
- if (!dp) { |
- /* default distribution point */ |
- SECStatus rv = DPCache_Create(&cache->dpp, issuer, subject, NULL); |
- if (SECSuccess == rv) { |
- *newdpc = cache->dpp; |
- return SECSuccess; |
- } |
- } else { |
- /* we should never hit this until we support multiple DPs */ |
- PORT_Assert(dp); |
- /* XCRL allocate a new distribution point cache object, initialize it, |
- and add it to the hash table of DPs */ |
- } |
- return SECFailure; |
-} |
- |
-/* add an IssuerCache to the global hash table of issuers */ |
-static SECStatus |
-CRLCache_AddIssuer(CRLIssuerCache* issuer) |
-{ |
- PORT_Assert(issuer); |
- PORT_Assert(crlcache.issuers); |
- if (!issuer || !crlcache.issuers) { |
- PORT_SetError(SEC_ERROR_LIBRARY_FAILURE); |
- return SECFailure; |
- } |
- if (NULL == PL_HashTableAdd(crlcache.issuers, (void*)issuer->subject, |
- (void*)issuer)) { |
- return SECFailure; |
- } |
- return SECSuccess; |
-} |
- |
-/* retrieve the issuer cache object for a given issuer subject */ |
-static SECStatus |
-CRLCache_GetIssuerCache(CRLCache* cache, const SECItem* subject, |
- CRLIssuerCache** returned) |
-{ |
- /* we need to look up the issuer in the hash table */ |
- SECStatus rv = SECSuccess; |
- PORT_Assert(cache); |
- PORT_Assert(subject); |
- PORT_Assert(returned); |
- PORT_Assert(crlcache.issuers); |
- if (!cache || !subject || !returned || !crlcache.issuers) { |
- PORT_SetError(SEC_ERROR_LIBRARY_FAILURE); |
- rv = SECFailure; |
- } |
- |
- if (SECSuccess == rv) { |
- *returned = (CRLIssuerCache*)PL_HashTableLookup(crlcache.issuers, |
- (void*)subject); |
- } |
- |
- return rv; |
-} |
- |
-/* retrieve the full CRL object that best matches the content of a DPCache */ |
-static CERTSignedCrl* |
-GetBestCRL(CRLDPCache* cache, PRBool entries) |
-{ |
- CachedCrl* acrl = NULL; |
- |
- PORT_Assert(cache); |
- if (!cache) { |
- PORT_SetError(SEC_ERROR_LIBRARY_FAILURE); |
- return NULL; |
- } |
- |
- if (0 == cache->ncrls) { |
- /* empty cache*/ |
- PORT_SetError(SEC_ERROR_CRL_NOT_FOUND); |
- return NULL; |
- } |
- |
- /* if we have a valid full CRL selected, return it */ |
- if (cache->selected) { |
- return SEC_DupCrl(cache->selected->crl); |
- } |
- |
- /* otherwise, use latest valid DER CRL */ |
- acrl = cache->crls[cache->ncrls - 1]; |
- |
- if (acrl && (PR_FALSE == GetOpaqueCRLFields(acrl->crl)->decodingError)) { |
- SECStatus rv = SECSuccess; |
- if (PR_TRUE == entries) { |
- rv = CERT_CompleteCRLDecodeEntries(acrl->crl); |
- } |
- if (SECSuccess == rv) { |
- return SEC_DupCrl(acrl->crl); |
- } |
- } |
- |
- PORT_SetError(SEC_ERROR_CRL_NOT_FOUND); |
- return NULL; |
-} |
- |
-/* get a particular DPCache object from an IssuerCache */ |
-static CRLDPCache* |
-IssuerCache_GetDPCache(CRLIssuerCache* cache, const SECItem* dp) |
-{ |
- CRLDPCache* dpp = NULL; |
- PORT_Assert(cache); |
- /* XCRL for now we only support the "default" DP, ie. the |
- full CRL. So we can return the global one without locking. In |
- the future we will have a lock */ |
- PORT_Assert(NULL == dp); |
- if (!cache || dp) { |
- PORT_SetError(SEC_ERROR_LIBRARY_FAILURE); |
- return NULL; |
- } |
-#ifdef XCRL |
- NSSRWLock_LockRead(cache->lock); |
-#endif |
- dpp = cache->dpp; |
-#ifdef XCRL |
- NSSRWLock_UnlockRead(cache->lock); |
-#endif |
- return dpp; |
-} |
- |
-/* get a DPCache object for the given issuer subject and dp |
- Automatically creates the cache object if it doesn't exist yet. |
- */ |
-SECStatus |
-AcquireDPCache(CERTCertificate* issuer, const SECItem* subject, |
- const SECItem* dp, PRTime t, void* wincx, CRLDPCache** dpcache, |
- PRBool* writeLocked) |
-{ |
- SECStatus rv = SECSuccess; |
- CRLIssuerCache* issuercache = NULL; |
-#ifdef GLOBAL_RWLOCK |
- PRBool globalwrite = PR_FALSE; |
-#endif |
- PORT_Assert(crlcache.lock); |
- if (!crlcache.lock) { |
- /* CRL cache is not initialized */ |
- PORT_SetError(SEC_ERROR_LIBRARY_FAILURE); |
- return SECFailure; |
- } |
-#ifdef GLOBAL_RWLOCK |
- NSSRWLock_LockRead(crlcache.lock); |
-#else |
- PR_Lock(crlcache.lock); |
-#endif |
- rv = CRLCache_GetIssuerCache(&crlcache, subject, &issuercache); |
- if (SECSuccess != rv) { |
-#ifdef GLOBAL_RWLOCK |
- NSSRWLock_UnlockRead(crlcache.lock); |
-#else |
- PR_Unlock(crlcache.lock); |
-#endif |
- PORT_SetError(SEC_ERROR_LIBRARY_FAILURE); |
- return SECFailure; |
- } |
- if (!issuercache) { |
- /* there is no cache for this issuer yet. This means this is the |
- first time we look up a cert from that issuer, and we need to |
- create the cache. */ |
- |
- rv = IssuerCache_Create(&issuercache, issuer, subject, dp); |
- if (SECSuccess == rv && !issuercache) { |
- PORT_Assert(issuercache); |
- rv = SECFailure; |
- } |
- |
- if (SECSuccess == rv) { |
- /* This is the first time we look up a cert of this issuer. |
- Create the DPCache for this DP . */ |
- rv = IssuerCache_AddDP(issuercache, issuer, subject, dp, dpcache); |
- } |
- |
- if (SECSuccess == rv) { |
- /* lock the DPCache for write to ensure the update happens in this |
- thread */ |
- *writeLocked = PR_TRUE; |
-#ifdef DPC_RWLOCK |
- NSSRWLock_LockWrite((*dpcache)->lock); |
-#else |
- PR_Lock((*dpcache)->lock); |
-#endif |
- } |
- |
- if (SECSuccess == rv) { |
-/* now add the new issuer cache to the global hash table of |
- issuers */ |
-#ifdef GLOBAL_RWLOCK |
- CRLIssuerCache* existing = NULL; |
- NSSRWLock_UnlockRead(crlcache.lock); |
- /* when using a r/w lock for the global cache, check if the issuer |
- already exists before adding to the hash table */ |
- NSSRWLock_LockWrite(crlcache.lock); |
- globalwrite = PR_TRUE; |
- rv = CRLCache_GetIssuerCache(&crlcache, subject, &existing); |
- if (!existing) { |
-#endif |
- rv = CRLCache_AddIssuer(issuercache); |
- if (SECSuccess != rv) { |
- /* failure */ |
- rv = SECFailure; |
- } |
-#ifdef GLOBAL_RWLOCK |
- } else { |
- /* somebody else updated before we did */ |
- IssuerCache_Destroy(issuercache); /* destroy the new object */ |
- issuercache = existing; /* use the existing one */ |
- *dpcache = IssuerCache_GetDPCache(issuercache, dp); |
- } |
-#endif |
- } |
- |
-/* now unlock the global cache. We only want to lock the issuer hash |
- table addition. Holding it longer would hurt scalability */ |
-#ifdef GLOBAL_RWLOCK |
- if (PR_TRUE == globalwrite) { |
- NSSRWLock_UnlockWrite(crlcache.lock); |
- globalwrite = PR_FALSE; |
- } else { |
- NSSRWLock_UnlockRead(crlcache.lock); |
- } |
-#else |
- PR_Unlock(crlcache.lock); |
-#endif |
- |
- /* if there was a failure adding an issuer cache object, destroy it */ |
- if (SECSuccess != rv && issuercache) { |
- if (PR_TRUE == *writeLocked) { |
-#ifdef DPC_RWLOCK |
- NSSRWLock_UnlockWrite((*dpcache)->lock); |
-#else |
- PR_Unlock((*dpcache)->lock); |
-#endif |
- } |
- IssuerCache_Destroy(issuercache); |
- issuercache = NULL; |
- } |
- |
- if (SECSuccess != rv) { |
- return SECFailure; |
- } |
- } else { |
-#ifdef GLOBAL_RWLOCK |
- NSSRWLock_UnlockRead(crlcache.lock); |
-#else |
- PR_Unlock(crlcache.lock); |
-#endif |
- *dpcache = IssuerCache_GetDPCache(issuercache, dp); |
- } |
- /* we now have a DPCache that we can use for lookups */ |
- /* lock it for read, unless we already locked for write */ |
- if (PR_FALSE == *writeLocked) { |
-#ifdef DPC_RWLOCK |
- NSSRWLock_LockRead((*dpcache)->lock); |
-#else |
- PR_Lock((*dpcache)->lock); |
-#endif |
- } |
- |
- if (SECSuccess == rv) { |
- /* currently there is always one and only one DPCache per issuer */ |
- PORT_Assert(*dpcache); |
- if (*dpcache) { |
- /* make sure the DP cache is up to date before using it */ |
- rv = DPCache_GetUpToDate(*dpcache, issuer, PR_FALSE == *writeLocked, |
- t, wincx); |
- } else { |
- rv = SECFailure; |
- } |
- } |
- return rv; |
-} |
- |
-/* unlock access to the DPCache */ |
-void |
-ReleaseDPCache(CRLDPCache* dpcache, PRBool writeLocked) |
-{ |
- if (!dpcache) { |
- PORT_SetError(SEC_ERROR_LIBRARY_FAILURE); |
- return; |
- } |
-#ifdef DPC_RWLOCK |
- if (PR_TRUE == writeLocked) { |
- NSSRWLock_UnlockWrite(dpcache->lock); |
- } else { |
- NSSRWLock_UnlockRead(dpcache->lock); |
- } |
-#else |
- PR_Unlock(dpcache->lock); |
-#endif |
-} |
- |
-SECStatus |
-cert_CheckCertRevocationStatus(CERTCertificate* cert, CERTCertificate* issuer, |
- const SECItem* dp, PRTime t, void* wincx, |
- CERTRevocationStatus* revStatus, |
- CERTCRLEntryReasonCode* revReason) |
-{ |
- PRBool lockedwrite = PR_FALSE; |
- SECStatus rv = SECSuccess; |
- CRLDPCache* dpcache = NULL; |
- CERTRevocationStatus status = certRevocationStatusRevoked; |
- CERTCRLEntryReasonCode reason = crlEntryReasonUnspecified; |
- CERTCrlEntry* entry = NULL; |
- dpcacheStatus ds; |
- |
- if (!cert || !issuer) { |
- PORT_SetError(SEC_ERROR_LIBRARY_FAILURE); |
- return SECFailure; |
- } |
- |
- if (revStatus) { |
- *revStatus = status; |
- } |
- if (revReason) { |
- *revReason = reason; |
- } |
- |
- if (t && |
- secCertTimeValid != CERT_CheckCertValidTimes(issuer, t, PR_FALSE)) { |
- /* we won't be able to check the CRL's signature if the issuer cert |
- is expired as of the time we are verifying. This may cause a valid |
- CRL to be cached as bad. short-circuit to avoid this case. */ |
- PORT_SetError(SEC_ERROR_EXPIRED_ISSUER_CERTIFICATE); |
- return SECFailure; |
- } |
- |
- rv = AcquireDPCache(issuer, &issuer->derSubject, dp, t, wincx, &dpcache, |
- &lockedwrite); |
- PORT_Assert(SECSuccess == rv); |
- if (SECSuccess != rv) { |
- PORT_SetError(SEC_ERROR_LIBRARY_FAILURE); |
- return SECFailure; |
- } |
- /* now look up the certificate SN in the DP cache's CRL */ |
- ds = DPCache_Lookup(dpcache, &cert->serialNumber, &entry); |
- switch (ds) { |
- case dpcacheFoundEntry: |
- PORT_Assert(entry); |
- /* check the time if we have one */ |
- if (entry->revocationDate.data && entry->revocationDate.len) { |
- PRTime revocationDate = 0; |
- if (SECSuccess == |
- DER_DecodeTimeChoice(&revocationDate, |
- &entry->revocationDate)) { |
- /* we got a good revocation date, only consider the |
- certificate revoked if the time we are inquiring about |
- is past the revocation date */ |
- if (t >= revocationDate) { |
- rv = SECFailure; |
- } else { |
- status = certRevocationStatusValid; |
- } |
- } else { |
- /* invalid revocation date, consider the certificate |
- permanently revoked */ |
- rv = SECFailure; |
- } |
- } else { |
- /* no revocation date, certificate is permanently revoked */ |
- rv = SECFailure; |
- } |
- if (SECFailure == rv) { |
- (void)CERT_FindCRLEntryReasonExten(entry, &reason); |
- PORT_SetError(SEC_ERROR_REVOKED_CERTIFICATE); |
- } |
- break; |
- |
- case dpcacheEmpty: |
- /* useful for NIST policy */ |
- status = certRevocationStatusUnknown; |
- break; |
- |
- case dpcacheNoEntry: |
- status = certRevocationStatusValid; |
- break; |
- |
- case dpcacheInvalidCacheError: |
- /* treat it as unknown and let the caller decide based on |
- the policy */ |
- status = certRevocationStatusUnknown; |
- break; |
- |
- default: |
- /* leave status as revoked */ |
- break; |
- } |
- |
- ReleaseDPCache(dpcache, lockedwrite); |
- if (revStatus) { |
- *revStatus = status; |
- } |
- if (revReason) { |
- *revReason = reason; |
- } |
- return rv; |
-} |
- |
-/* check CRL revocation status of given certificate and issuer */ |
-SECStatus |
-CERT_CheckCRL(CERTCertificate* cert, CERTCertificate* issuer, const SECItem* dp, |
- PRTime t, void* wincx) |
-{ |
- return cert_CheckCertRevocationStatus(cert, issuer, dp, t, wincx, NULL, |
- NULL); |
-} |
- |
-/* retrieve full CRL object that best matches the cache status */ |
-CERTSignedCrl* |
-SEC_FindCrlByName(CERTCertDBHandle* handle, SECItem* crlKey, int type) |
-{ |
- CERTSignedCrl* acrl = NULL; |
- CRLDPCache* dpcache = NULL; |
- SECStatus rv = SECSuccess; |
- PRBool writeLocked = PR_FALSE; |
- |
- if (!crlKey) { |
- PORT_SetError(SEC_ERROR_INVALID_ARGS); |
- return NULL; |
- } |
- |
- rv = AcquireDPCache(NULL, crlKey, NULL, 0, NULL, &dpcache, &writeLocked); |
- if (SECSuccess == rv) { |
- acrl = GetBestCRL(dpcache, PR_TRUE); /* decode entries, because |
- SEC_FindCrlByName always returned fully decoded CRLs in the past */ |
- ReleaseDPCache(dpcache, writeLocked); |
- } |
- return acrl; |
-} |
- |
-/* invalidate the CRL cache for a given issuer, which forces a refetch of |
- CRL objects from PKCS#11 tokens */ |
-void |
-CERT_CRLCacheRefreshIssuer(CERTCertDBHandle* dbhandle, SECItem* crlKey) |
-{ |
- CRLDPCache* cache = NULL; |
- SECStatus rv = SECSuccess; |
- PRBool writeLocked = PR_FALSE; |
- PRBool readlocked; |
- |
- (void)dbhandle; /* silence compiler warnings */ |
- |
- /* XCRL we will need to refresh all the DPs of the issuer in the future, |
- not just the default one */ |
- rv = AcquireDPCache(NULL, crlKey, NULL, 0, NULL, &cache, &writeLocked); |
- if (SECSuccess != rv) { |
- return; |
- } |
- /* we need to invalidate the DPCache here */ |
- readlocked = (writeLocked == PR_TRUE ? PR_FALSE : PR_TRUE); |
- DPCache_LockWrite(); |
- cache->refresh = PR_TRUE; |
- DPCache_UnlockWrite(); |
- ReleaseDPCache(cache, writeLocked); |
- return; |
-} |
- |
-/* add the specified RAM CRL object to the cache */ |
-SECStatus |
-CERT_CacheCRL(CERTCertDBHandle* dbhandle, SECItem* newdercrl) |
-{ |
- CRLDPCache* cache = NULL; |
- SECStatus rv = SECSuccess; |
- PRBool writeLocked = PR_FALSE; |
- PRBool readlocked; |
- CachedCrl* returned = NULL; |
- PRBool added = PR_FALSE; |
- CERTSignedCrl* newcrl = NULL; |
- int realerror = 0; |
- |
- if (!dbhandle || !newdercrl) { |
- PORT_SetError(SEC_ERROR_INVALID_ARGS); |
- return SECFailure; |
- } |
- |
- /* first decode the DER CRL to make sure it's OK */ |
- newcrl = CERT_DecodeDERCrlWithFlags(NULL, newdercrl, SEC_CRL_TYPE, |
- CRL_DECODE_DONT_COPY_DER | |
- CRL_DECODE_SKIP_ENTRIES); |
- |
- if (!newcrl) { |
- return SECFailure; |
- } |
- |
- /* XXX check if it has IDP extension. If so, do not proceed and set error */ |
- |
- rv = AcquireDPCache(NULL, &newcrl->crl.derName, NULL, 0, NULL, &cache, |
- &writeLocked); |
- if (SECSuccess == rv) { |
- readlocked = (writeLocked == PR_TRUE ? PR_FALSE : PR_TRUE); |
- |
- rv = CachedCrl_Create(&returned, newcrl, CRL_OriginExplicit); |
- if (SECSuccess == rv && returned) { |
- DPCache_LockWrite(); |
- rv = DPCache_AddCRL(cache, returned, &added); |
- if (PR_TRUE != added) { |
- realerror = PORT_GetError(); |
- CachedCrl_Destroy(returned); |
- returned = NULL; |
- } |
- DPCache_UnlockWrite(); |
- } |
- |
- ReleaseDPCache(cache, writeLocked); |
- |
- if (!added) { |
- rv = SECFailure; |
- } |
- } |
- SEC_DestroyCrl(newcrl); /* free the CRL. Either it got added to the cache |
- and the refcount got bumped, or not, and thus we need to free its |
- RAM */ |
- if (realerror) { |
- PORT_SetError(realerror); |
- } |
- return rv; |
-} |
- |
-/* remove the specified RAM CRL object from the cache */ |
-SECStatus |
-CERT_UncacheCRL(CERTCertDBHandle* dbhandle, SECItem* olddercrl) |
-{ |
- CRLDPCache* cache = NULL; |
- SECStatus rv = SECSuccess; |
- PRBool writeLocked = PR_FALSE; |
- PRBool readlocked; |
- PRBool removed = PR_FALSE; |
- PRUint32 i; |
- CERTSignedCrl* oldcrl = NULL; |
- |
- if (!dbhandle || !olddercrl) { |
- PORT_SetError(SEC_ERROR_INVALID_ARGS); |
- return SECFailure; |
- } |
- |
- /* first decode the DER CRL to make sure it's OK */ |
- oldcrl = CERT_DecodeDERCrlWithFlags(NULL, olddercrl, SEC_CRL_TYPE, |
- CRL_DECODE_DONT_COPY_DER | |
- CRL_DECODE_SKIP_ENTRIES); |
- |
- if (!oldcrl) { |
- /* if this DER CRL can't decode, it can't be in the cache */ |
- return SECFailure; |
- } |
- |
- rv = AcquireDPCache(NULL, &oldcrl->crl.derName, NULL, 0, NULL, &cache, |
- &writeLocked); |
- if (SECSuccess == rv) { |
- CachedCrl* returned = NULL; |
- |
- readlocked = (writeLocked == PR_TRUE ? PR_FALSE : PR_TRUE); |
- |
- rv = CachedCrl_Create(&returned, oldcrl, CRL_OriginExplicit); |
- if (SECSuccess == rv && returned) { |
- DPCache_LockWrite(); |
- for (i = 0; i < cache->ncrls; i++) { |
- PRBool dupe = PR_FALSE, updated = PR_FALSE; |
- rv = CachedCrl_Compare(returned, cache->crls[i], &dupe, |
- &updated); |
- if (SECSuccess != rv) { |
- PORT_SetError(SEC_ERROR_LIBRARY_FAILURE); |
- break; |
- } |
- if (PR_TRUE == dupe) { |
- rv = DPCache_RemoveCRL(cache, i); /* got a match */ |
- if (SECSuccess == rv) { |
- cache->mustchoose = PR_TRUE; |
- removed = PR_TRUE; |
- } |
- break; |
- } |
- } |
- |
- DPCache_UnlockWrite(); |
- |
- if (SECSuccess != CachedCrl_Destroy(returned)) { |
- rv = SECFailure; |
- } |
- } |
- |
- ReleaseDPCache(cache, writeLocked); |
- } |
- if (SECSuccess != SEC_DestroyCrl(oldcrl)) { |
- /* need to do this because object is refcounted */ |
- rv = SECFailure; |
- } |
- if (SECSuccess == rv && PR_TRUE != removed) { |
- PORT_SetError(SEC_ERROR_CRL_NOT_FOUND); |
- } |
- return rv; |
-} |
- |
-SECStatus |
-cert_AcquireNamedCRLCache(NamedCRLCache** returned) |
-{ |
- PORT_Assert(returned); |
- if (!namedCRLCache.lock) { |
- PORT_Assert(0); |
- return SECFailure; |
- } |
- PR_Lock(namedCRLCache.lock); |
- *returned = &namedCRLCache; |
- return SECSuccess; |
-} |
- |
-/* This must be called only while cache is acquired, and the entry is only |
- * valid until cache is released. |
- */ |
-SECStatus |
-cert_FindCRLByGeneralName(NamedCRLCache* ncc, const SECItem* canonicalizedName, |
- NamedCRLCacheEntry** retEntry) |
-{ |
- if (!ncc || !canonicalizedName || !retEntry) { |
- PORT_SetError(SEC_ERROR_INVALID_ARGS); |
- return SECFailure; |
- } |
- *retEntry = (NamedCRLCacheEntry*)PL_HashTableLookup( |
- namedCRLCache.entries, (void*)canonicalizedName); |
- return SECSuccess; |
-} |
- |
-SECStatus |
-cert_ReleaseNamedCRLCache(NamedCRLCache* ncc) |
-{ |
- if (!ncc) { |
- return SECFailure; |
- } |
- if (!ncc->lock) { |
- PORT_Assert(0); |
- return SECFailure; |
- } |
- PR_Unlock(namedCRLCache.lock); |
- return SECSuccess; |
-} |
- |
-/* creates new named cache entry from CRL, and tries to add it to CRL cache */ |
-static SECStatus |
-addCRLToCache(CERTCertDBHandle* dbhandle, SECItem* crl, |
- const SECItem* canonicalizedName, NamedCRLCacheEntry** newEntry) |
-{ |
- SECStatus rv = SECSuccess; |
- NamedCRLCacheEntry* entry = NULL; |
- |
- /* create new named entry */ |
- if (SECSuccess != NamedCRLCacheEntry_Create(newEntry) || !*newEntry) { |
- /* no need to keep unused CRL around */ |
- SECITEM_ZfreeItem(crl, PR_TRUE); |
- return SECFailure; |
- } |
- entry = *newEntry; |
- entry->crl = crl; /* named CRL cache owns DER */ |
- entry->lastAttemptTime = PR_Now(); |
- entry->canonicalizedName = SECITEM_DupItem(canonicalizedName); |
- if (!entry->canonicalizedName) { |
- rv = NamedCRLCacheEntry_Destroy(entry); /* destroys CRL too */ |
- PORT_Assert(SECSuccess == rv); |
- return SECFailure; |
- } |
- /* now, attempt to insert CRL into CRL cache */ |
- if (SECSuccess == CERT_CacheCRL(dbhandle, entry->crl)) { |
- entry->inCRLCache = PR_TRUE; |
- entry->successfulInsertionTime = entry->lastAttemptTime; |
- } else { |
- switch (PR_GetError()) { |
- case SEC_ERROR_CRL_ALREADY_EXISTS: |
- entry->dupe = PR_TRUE; |
- break; |
- |
- case SEC_ERROR_BAD_DER: |
- entry->badDER = PR_TRUE; |
- break; |
- |
- /* all other reasons */ |
- default: |
- entry->unsupported = PR_TRUE; |
- break; |
- } |
- rv = SECFailure; |
- /* no need to keep unused CRL around */ |
- SECITEM_ZfreeItem(entry->crl, PR_TRUE); |
- entry->crl = NULL; |
- } |
- return rv; |
-} |
- |
-/* take ownership of CRL, and insert it into the named CRL cache |
- * and indexed CRL cache |
- */ |
-SECStatus |
-cert_CacheCRLByGeneralName(CERTCertDBHandle* dbhandle, SECItem* crl, |
- const SECItem* canonicalizedName) |
-{ |
- NamedCRLCacheEntry *oldEntry, *newEntry = NULL; |
- NamedCRLCache* ncc = NULL; |
- SECStatus rv = SECSuccess; |
- |
- PORT_Assert(namedCRLCache.lock); |
- PORT_Assert(namedCRLCache.entries); |
- |
- if (!crl || !canonicalizedName) { |
- PORT_Assert(0); |
- PORT_SetError(SEC_ERROR_INVALID_ARGS); |
- return SECFailure; |
- } |
- |
- rv = cert_AcquireNamedCRLCache(&ncc); |
- PORT_Assert(SECSuccess == rv); |
- if (SECSuccess != rv) { |
- SECITEM_ZfreeItem(crl, PR_TRUE); |
- return SECFailure; |
- } |
- rv = cert_FindCRLByGeneralName(ncc, canonicalizedName, &oldEntry); |
- PORT_Assert(SECSuccess == rv); |
- if (SECSuccess != rv) { |
- rv = cert_ReleaseNamedCRLCache(ncc); |
- SECITEM_ZfreeItem(crl, PR_TRUE); |
- return SECFailure; |
- } |
- if (SECSuccess == |
- addCRLToCache(dbhandle, crl, canonicalizedName, &newEntry)) { |
- if (!oldEntry) { |
- /* add new good entry to the hash table */ |
- if (NULL == PL_HashTableAdd(namedCRLCache.entries, |
- (void*)newEntry->canonicalizedName, |
- (void*)newEntry)) { |
- PORT_Assert(0); |
- NamedCRLCacheEntry_Destroy(newEntry); |
- rv = SECFailure; |
- } |
- } else { |
- PRBool removed; |
- /* remove the old CRL from the cache if needed */ |
- if (oldEntry->inCRLCache) { |
- rv = CERT_UncacheCRL(dbhandle, oldEntry->crl); |
- PORT_Assert(SECSuccess == rv); |
- } |
- removed = PL_HashTableRemove(namedCRLCache.entries, |
- (void*)oldEntry->canonicalizedName); |
- PORT_Assert(removed); |
- if (!removed) { |
- rv = SECFailure; |
- /* leak old entry since we couldn't remove it from the hash |
- * table */ |
- } else { |
- PORT_CheckSuccess(NamedCRLCacheEntry_Destroy(oldEntry)); |
- } |
- if (NULL == PL_HashTableAdd(namedCRLCache.entries, |
- (void*)newEntry->canonicalizedName, |
- (void*)newEntry)) { |
- PORT_Assert(0); |
- rv = SECFailure; |
- } |
- } |
- } else { |
- /* error adding new CRL to cache */ |
- if (!oldEntry) { |
- /* no old cache entry, use the new one even though it's bad */ |
- if (NULL == PL_HashTableAdd(namedCRLCache.entries, |
- (void*)newEntry->canonicalizedName, |
- (void*)newEntry)) { |
- PORT_Assert(0); |
- rv = SECFailure; |
- } |
- } else { |
- if (oldEntry->inCRLCache) { |
- /* previous cache entry was good, keep it and update time */ |
- oldEntry->lastAttemptTime = newEntry->lastAttemptTime; |
- /* throw away new bad entry */ |
- rv = NamedCRLCacheEntry_Destroy(newEntry); |
- PORT_Assert(SECSuccess == rv); |
- } else { |
- /* previous cache entry was bad, just replace it */ |
- PRBool removed = PL_HashTableRemove( |
- namedCRLCache.entries, (void*)oldEntry->canonicalizedName); |
- PORT_Assert(removed); |
- if (!removed) { |
- /* leak old entry since we couldn't remove it from the hash |
- * table */ |
- rv = SECFailure; |
- } else { |
- PORT_CheckSuccess(NamedCRLCacheEntry_Destroy(oldEntry)); |
- } |
- if (NULL == PL_HashTableAdd(namedCRLCache.entries, |
- (void*)newEntry->canonicalizedName, |
- (void*)newEntry)) { |
- PORT_Assert(0); |
- rv = SECFailure; |
- } |
- } |
- } |
- } |
- PORT_CheckSuccess(cert_ReleaseNamedCRLCache(ncc)); |
- |
- return rv; |
-} |
- |
-static SECStatus |
-CachedCrl_Create(CachedCrl** returned, CERTSignedCrl* crl, CRLOrigin origin) |
-{ |
- CachedCrl* newcrl = NULL; |
- if (!returned) { |
- PORT_SetError(SEC_ERROR_LIBRARY_FAILURE); |
- return SECFailure; |
- } |
- newcrl = PORT_ZAlloc(sizeof(CachedCrl)); |
- if (!newcrl) { |
- return SECFailure; |
- } |
- newcrl->crl = SEC_DupCrl(crl); |
- newcrl->origin = origin; |
- *returned = newcrl; |
- return SECSuccess; |
-} |
- |
-/* empty the cache content */ |
-static SECStatus |
-CachedCrl_Depopulate(CachedCrl* crl) |
-{ |
- if (!crl) { |
- PORT_SetError(SEC_ERROR_LIBRARY_FAILURE); |
- return SECFailure; |
- } |
- /* destroy the hash table */ |
- if (crl->entries) { |
- PL_HashTableDestroy(crl->entries); |
- crl->entries = NULL; |
- } |
- |
- /* free the pre buffer */ |
- if (crl->prebuffer) { |
- PreAllocator_Destroy(crl->prebuffer); |
- crl->prebuffer = NULL; |
- } |
- return SECSuccess; |
-} |
- |
-static SECStatus |
-CachedCrl_Destroy(CachedCrl* crl) |
-{ |
- if (!crl) { |
- PORT_SetError(SEC_ERROR_LIBRARY_FAILURE); |
- return SECFailure; |
- } |
- CachedCrl_Depopulate(crl); |
- SEC_DestroyCrl(crl->crl); |
- PORT_Free(crl); |
- return SECSuccess; |
-} |
- |
-/* create hash table of CRL entries */ |
-static SECStatus |
-CachedCrl_Populate(CachedCrl* crlobject) |
-{ |
- SECStatus rv = SECFailure; |
- CERTCrlEntry** crlEntry = NULL; |
- PRUint32 numEntries = 0; |
- |
- if (!crlobject) { |
- PORT_SetError(SEC_ERROR_LIBRARY_FAILURE); |
- return SECFailure; |
- } |
- /* complete the entry decoding . XXX thread-safety of CRL object */ |
- rv = CERT_CompleteCRLDecodeEntries(crlobject->crl); |
- if (SECSuccess != rv) { |
- crlobject->unbuildable = PR_TRUE; /* don't try to build this again */ |
- return SECFailure; |
- } |
- |
- if (crlobject->entries && crlobject->prebuffer) { |
- /* cache is already built */ |
- return SECSuccess; |
- } |
- |
- /* build the hash table from the full CRL */ |
- /* count CRL entries so we can pre-allocate space for hash table entries */ |
- for (crlEntry = crlobject->crl->crl.entries; crlEntry && *crlEntry; |
- crlEntry++) { |
- numEntries++; |
- } |
- crlobject->prebuffer = |
- PreAllocator_Create(numEntries * sizeof(PLHashEntry)); |
- PORT_Assert(crlobject->prebuffer); |
- if (!crlobject->prebuffer) { |
- return SECFailure; |
- } |
- /* create a new hash table */ |
- crlobject->entries = |
- PL_NewHashTable(0, SECITEM_Hash, SECITEM_HashCompare, PL_CompareValues, |
- &preAllocOps, crlobject->prebuffer); |
- PORT_Assert(crlobject->entries); |
- if (!crlobject->entries) { |
- return SECFailure; |
- } |
- /* add all serial numbers to the hash table */ |
- for (crlEntry = crlobject->crl->crl.entries; crlEntry && *crlEntry; |
- crlEntry++) { |
- PL_HashTableAdd(crlobject->entries, &(*crlEntry)->serialNumber, |
- *crlEntry); |
- } |
- |
- return SECSuccess; |
-} |
- |
-/* returns true if there are CRLs from PKCS#11 slots */ |
-static PRBool |
-DPCache_HasTokenCRLs(CRLDPCache* cache) |
-{ |
- PRBool answer = PR_FALSE; |
- PRUint32 i; |
- for (i = 0; i < cache->ncrls; i++) { |
- if (cache->crls[i] && (CRL_OriginToken == cache->crls[i]->origin)) { |
- answer = PR_TRUE; |
- break; |
- } |
- } |
- return answer; |
-} |
- |
-/* are these CRLs the same, as far as the cache is concerned ? */ |
-/* are these CRLs the same token object but with different DER ? |
- This can happen if the DER CRL got updated in the token, but the PKCS#11 |
- object ID did not change. NSS softoken has the unfortunate property to |
- never change the object ID for CRL objects. */ |
-static SECStatus |
-CachedCrl_Compare(CachedCrl* a, CachedCrl* b, PRBool* isDupe, PRBool* isUpdated) |
-{ |
- PORT_Assert(a); |
- PORT_Assert(b); |
- PORT_Assert(isDupe); |
- PORT_Assert(isUpdated); |
- if (!a || !b || !isDupe || !isUpdated || !a->crl || !b->crl) { |
- PORT_SetError(SEC_ERROR_LIBRARY_FAILURE); |
- return SECFailure; |
- } |
- |
- *isDupe = *isUpdated = PR_FALSE; |
- |
- if (a == b) { |
- /* dupe */ |
- *isDupe = PR_TRUE; |
- *isUpdated = PR_FALSE; |
- return SECSuccess; |
- } |
- if (b->origin != a->origin) { |
- /* CRLs of different origins are not considered dupes, |
- and can't be updated either */ |
- return SECSuccess; |
- } |
- if (CRL_OriginToken == b->origin) { |
- /* for token CRLs, slot and PKCS#11 object handle must match for CRL |
- to truly be a dupe */ |
- if ((b->crl->slot == a->crl->slot) && |
- (b->crl->pkcs11ID == a->crl->pkcs11ID)) { |
- /* ASN.1 DER needs to match for dupe check */ |
- /* could optimize by just checking a few fields like thisUpdate */ |
- if (SECEqual == |
- SECITEM_CompareItem(b->crl->derCrl, a->crl->derCrl)) { |
- *isDupe = PR_TRUE; |
- } else { |
- *isUpdated = PR_TRUE; |
- } |
- } |
- return SECSuccess; |
- } |
- if (CRL_OriginExplicit == b->origin) { |
- /* We need to make sure this is the same object that the user provided |
- to CERT_CacheCRL previously. That API takes a SECItem*, thus, we |
- just do a pointer comparison here. |
- */ |
- if (b->crl->derCrl == a->crl->derCrl) { |
- *isDupe = PR_TRUE; |
- } |
- } |
- return SECSuccess; |
-} |