mozilla-central/security/nss/lib/certdb/certdb.c (file symbol)

Source code

Revision control

Copy as Markdown

Other Tools

/* 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/. */
/*
* Certificate handling code
*/
#include "nssilock.h"
#include "prmon.h"
#include "prtime.h"
#include "cert.h"
#include "certi.h"
#include "secder.h"
#include "secoid.h"
#include "secasn1.h"
#include "genname.h"
#include "keyhi.h"
#include "secitem.h"
#include "certdb.h"
#include "prprf.h"
#include "sechash.h"
#include "prlong.h"
#include "certxutl.h"
#include "portreg.h"
#include "secerr.h"
#include "sslerr.h"
#include "pk11func.h"
#include "xconst.h" /* for CERT_DecodeAltNameExtension */
#include "pki.h"
#include "pki3hack.h"
SEC_ASN1_MKSUB(CERT_TimeChoiceTemplate)
SEC_ASN1_MKSUB(SECOID_AlgorithmIDTemplate)
SEC_ASN1_MKSUB(SEC_BitStringTemplate)
SEC_ASN1_MKSUB(SEC_IntegerTemplate)
SEC_ASN1_MKSUB(SEC_SkipTemplate)
/*
* Certificate database handling code
*/
const SEC_ASN1Template CERT_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 }
};
const SEC_ASN1Template CERT_SequenceOfCertExtensionTemplate[] = {
{ SEC_ASN1_SEQUENCE_OF, 0, CERT_CertExtensionTemplate }
};
const SEC_ASN1Template CERT_TimeChoiceTemplate[] = {
{ SEC_ASN1_CHOICE, offsetof(SECItem, type), 0, sizeof(SECItem) },
{ SEC_ASN1_UTC_TIME, 0, 0, siUTCTime },
{ SEC_ASN1_GENERALIZED_TIME, 0, 0, siGeneralizedTime },
{ 0 }
};
const SEC_ASN1Template CERT_ValidityTemplate[] = {
{ SEC_ASN1_SEQUENCE, 0, NULL, sizeof(CERTValidity) },
{ SEC_ASN1_INLINE | SEC_ASN1_XTRN, offsetof(CERTValidity, notBefore),
SEC_ASN1_SUB(CERT_TimeChoiceTemplate), 0 },
{ SEC_ASN1_INLINE | SEC_ASN1_XTRN, offsetof(CERTValidity, notAfter),
SEC_ASN1_SUB(CERT_TimeChoiceTemplate), 0 },
{ 0 }
};
const SEC_ASN1Template CERT_CertificateTemplate[] = {
{ SEC_ASN1_SEQUENCE, 0, NULL, sizeof(CERTCertificate) },
{ SEC_ASN1_EXPLICIT | SEC_ASN1_OPTIONAL | SEC_ASN1_CONSTRUCTED |
SEC_ASN1_CONTEXT_SPECIFIC | SEC_ASN1_XTRN | 0, /* XXX DER_DEFAULT */
offsetof(CERTCertificate, version),
SEC_ASN1_SUB(SEC_IntegerTemplate) },
{ SEC_ASN1_INTEGER, offsetof(CERTCertificate, serialNumber) },
{ SEC_ASN1_INLINE | SEC_ASN1_XTRN, offsetof(CERTCertificate, signature),
SEC_ASN1_SUB(SECOID_AlgorithmIDTemplate) },
{ SEC_ASN1_SAVE, offsetof(CERTCertificate, derIssuer) },
{ SEC_ASN1_INLINE, offsetof(CERTCertificate, issuer), CERT_NameTemplate },
{ SEC_ASN1_INLINE, offsetof(CERTCertificate, validity),
CERT_ValidityTemplate },
{ SEC_ASN1_SAVE, offsetof(CERTCertificate, derSubject) },
{ SEC_ASN1_INLINE, offsetof(CERTCertificate, subject), CERT_NameTemplate },
{ SEC_ASN1_SAVE, offsetof(CERTCertificate, derPublicKey) },
{ SEC_ASN1_INLINE, offsetof(CERTCertificate, subjectPublicKeyInfo),
CERT_SubjectPublicKeyInfoTemplate },
{ SEC_ASN1_OPTIONAL | SEC_ASN1_CONTEXT_SPECIFIC | SEC_ASN1_XTRN | 1,
offsetof(CERTCertificate, issuerID),
SEC_ASN1_SUB(SEC_BitStringTemplate) },
{ SEC_ASN1_OPTIONAL | SEC_ASN1_CONTEXT_SPECIFIC | SEC_ASN1_XTRN | 2,
offsetof(CERTCertificate, subjectID),
SEC_ASN1_SUB(SEC_BitStringTemplate) },
{ SEC_ASN1_EXPLICIT | SEC_ASN1_OPTIONAL | SEC_ASN1_CONSTRUCTED |
SEC_ASN1_CONTEXT_SPECIFIC | 3,
offsetof(CERTCertificate, extensions),
CERT_SequenceOfCertExtensionTemplate },
{ 0 }
};
const SEC_ASN1Template SEC_SignedCertificateTemplate[] = {
{ SEC_ASN1_SEQUENCE, 0, NULL, sizeof(CERTCertificate) },
{ SEC_ASN1_SAVE, offsetof(CERTCertificate, signatureWrap.data) },
{ SEC_ASN1_INLINE, 0, CERT_CertificateTemplate },
{ SEC_ASN1_INLINE | SEC_ASN1_XTRN,
offsetof(CERTCertificate, signatureWrap.signatureAlgorithm),
SEC_ASN1_SUB(SECOID_AlgorithmIDTemplate) },
{ SEC_ASN1_BIT_STRING, offsetof(CERTCertificate, signatureWrap.signature) },
{ 0 }
};
/*
* Find the subjectName in a DER encoded certificate
*/
const SEC_ASN1Template SEC_CertSubjectTemplate[] = {
{ SEC_ASN1_SEQUENCE, 0, NULL, sizeof(SECItem) },
{ SEC_ASN1_EXPLICIT | SEC_ASN1_OPTIONAL | SEC_ASN1_CONSTRUCTED |
SEC_ASN1_CONTEXT_SPECIFIC | SEC_ASN1_XTRN | 0,
0, SEC_ASN1_SUB(SEC_SkipTemplate) }, /* version */
{ SEC_ASN1_SKIP }, /* serial number */
{ SEC_ASN1_SKIP }, /* signature algorithm */
{ SEC_ASN1_SKIP }, /* issuer */
{ SEC_ASN1_SKIP }, /* validity */
{ SEC_ASN1_ANY, 0, NULL }, /* subject */
{ SEC_ASN1_SKIP_REST },
{ 0 }
};
/*
* Find the issuerName in a DER encoded certificate
*/
const SEC_ASN1Template SEC_CertIssuerTemplate[] = {
{ SEC_ASN1_SEQUENCE, 0, NULL, sizeof(SECItem) },
{ SEC_ASN1_EXPLICIT | SEC_ASN1_OPTIONAL | SEC_ASN1_CONSTRUCTED |
SEC_ASN1_CONTEXT_SPECIFIC | SEC_ASN1_XTRN | 0,
0, SEC_ASN1_SUB(SEC_SkipTemplate) }, /* version */
{ SEC_ASN1_SKIP }, /* serial number */
{ SEC_ASN1_SKIP }, /* signature algorithm */
{ SEC_ASN1_ANY, 0, NULL }, /* issuer */
{ SEC_ASN1_SKIP_REST },
{ 0 }
};
/*
* Find the subjectName in a DER encoded certificate
*/
const SEC_ASN1Template SEC_CertSerialNumberTemplate[] = {
{ SEC_ASN1_SEQUENCE, 0, NULL, sizeof(SECItem) },
{ SEC_ASN1_EXPLICIT | SEC_ASN1_OPTIONAL | SEC_ASN1_CONSTRUCTED |
SEC_ASN1_CONTEXT_SPECIFIC | SEC_ASN1_XTRN | 0,
0, SEC_ASN1_SUB(SEC_SkipTemplate) }, /* version */
{ SEC_ASN1_ANY, 0, NULL }, /* serial number */
{ SEC_ASN1_SKIP_REST },
{ 0 }
};
/*
* Find the issuer and serialNumber in a DER encoded certificate.
* This data is used as the database lookup key since its the unique
* identifier of a certificate.
*/
const SEC_ASN1Template CERT_CertKeyTemplate[] = {
{ SEC_ASN1_SEQUENCE, 0, NULL, sizeof(CERTCertKey) },
{ SEC_ASN1_EXPLICIT | SEC_ASN1_OPTIONAL | SEC_ASN1_CONSTRUCTED |
SEC_ASN1_CONTEXT_SPECIFIC | SEC_ASN1_XTRN | 0,
0, SEC_ASN1_SUB(SEC_SkipTemplate) }, /* version */
{ SEC_ASN1_INTEGER, offsetof(CERTCertKey, serialNumber) },
{ SEC_ASN1_SKIP }, /* signature algorithm */
{ SEC_ASN1_ANY, offsetof(CERTCertKey, derIssuer) },
{ SEC_ASN1_SKIP_REST },
{ 0 }
};
SEC_ASN1_CHOOSER_IMPLEMENT(CERT_TimeChoiceTemplate)
SEC_ASN1_CHOOSER_IMPLEMENT(CERT_CertificateTemplate)
SEC_ASN1_CHOOSER_IMPLEMENT(SEC_SignedCertificateTemplate)
SEC_ASN1_CHOOSER_IMPLEMENT(CERT_SequenceOfCertExtensionTemplate)
SECStatus
CERT_KeyFromIssuerAndSN(PLArenaPool *arena, SECItem *issuer, SECItem *sn,
SECItem *key)
{
key->len = sn->len + issuer->len;
if ((sn->data == NULL) || (issuer->data == NULL)) {
goto loser;
}
key->data = (unsigned char *)PORT_ArenaAlloc(arena, key->len);
if (!key->data) {
goto loser;
}
/* copy the serialNumber */
PORT_Memcpy(key->data, sn->data, sn->len);
/* copy the issuer */
PORT_Memcpy(&key->data[sn->len], issuer->data, issuer->len);
return (SECSuccess);
loser:
return (SECFailure);
}
/*
* Extract the subject name from a DER certificate
*/
SECStatus
CERT_NameFromDERCert(SECItem *derCert, SECItem *derName)
{
int rv;
PLArenaPool *arena;
CERTSignedData sd;
void *tmpptr;
arena = PORT_NewArena(DER_DEFAULT_CHUNKSIZE);
if (!arena) {
return (SECFailure);
}
PORT_Memset(&sd, 0, sizeof(CERTSignedData));
rv = SEC_QuickDERDecodeItem(arena, &sd, CERT_SignedDataTemplate, derCert);
if (rv) {
goto loser;
}
PORT_Memset(derName, 0, sizeof(SECItem));
rv = SEC_QuickDERDecodeItem(arena, derName, SEC_CertSubjectTemplate,
&sd.data);
if (rv) {
goto loser;
}
tmpptr = derName->data;
derName->data = (unsigned char *)PORT_Alloc(derName->len);
if (derName->data == NULL) {
goto loser;
}
PORT_Memcpy(derName->data, tmpptr, derName->len);
PORT_FreeArena(arena, PR_FALSE);
return (SECSuccess);
loser:
PORT_FreeArena(arena, PR_FALSE);
return (SECFailure);
}
SECStatus
CERT_IssuerNameFromDERCert(SECItem *derCert, SECItem *derName)
{
int rv;
PORTCheapArenaPool tmpArena;
CERTSignedData sd;
void *tmpptr;
PORT_InitCheapArena(&tmpArena, DER_DEFAULT_CHUNKSIZE);
PORT_Memset(&sd, 0, sizeof(CERTSignedData));
rv = SEC_QuickDERDecodeItem(&tmpArena.arena, &sd, CERT_SignedDataTemplate,
derCert);
if (rv) {
goto loser;
}
PORT_Memset(derName, 0, sizeof(SECItem));
rv = SEC_QuickDERDecodeItem(&tmpArena.arena, derName,
SEC_CertIssuerTemplate, &sd.data);
if (rv) {
goto loser;
}
tmpptr = derName->data;
derName->data = (unsigned char *)PORT_Alloc(derName->len);
if (derName->data == NULL) {
goto loser;
}
PORT_Memcpy(derName->data, tmpptr, derName->len);
PORT_DestroyCheapArena(&tmpArena);
return (SECSuccess);
loser:
PORT_DestroyCheapArena(&tmpArena);
return (SECFailure);
}
SECStatus
CERT_SerialNumberFromDERCert(SECItem *derCert, SECItem *derName)
{
int rv;
PORTCheapArenaPool tmpArena;
CERTSignedData sd;
void *tmpptr;
PORT_InitCheapArena(&tmpArena, DER_DEFAULT_CHUNKSIZE);
PORT_Memset(&sd, 0, sizeof(CERTSignedData));
rv = SEC_QuickDERDecodeItem(&tmpArena.arena, &sd, CERT_SignedDataTemplate,
derCert);
if (rv) {
goto loser;
}
PORT_Memset(derName, 0, sizeof(SECItem));
rv = SEC_QuickDERDecodeItem(&tmpArena.arena, derName,
SEC_CertSerialNumberTemplate, &sd.data);
if (rv) {
goto loser;
}
tmpptr = derName->data;
derName->data = (unsigned char *)PORT_Alloc(derName->len);
if (derName->data == NULL) {
goto loser;
}
PORT_Memcpy(derName->data, tmpptr, derName->len);
PORT_DestroyCheapArena(&tmpArena);
return (SECSuccess);
loser:
PORT_DestroyCheapArena(&tmpArena);
return (SECFailure);
}
/*
* Generate a database key, based on serial number and issuer, from a
* DER certificate.
*/
SECStatus
CERT_KeyFromDERCert(PLArenaPool *reqArena, SECItem *derCert, SECItem *key)
{
int rv;
CERTSignedData sd;
CERTCertKey certkey;
if (!reqArena) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return SECFailure;
}
PORT_Memset(&sd, 0, sizeof(CERTSignedData));
rv =
SEC_QuickDERDecodeItem(reqArena, &sd, CERT_SignedDataTemplate, derCert);
if (rv) {
goto loser;
}
PORT_Memset(&certkey, 0, sizeof(CERTCertKey));
rv = SEC_QuickDERDecodeItem(reqArena, &certkey, CERT_CertKeyTemplate,
&sd.data);
if (rv) {
goto loser;
}
return (CERT_KeyFromIssuerAndSN(reqArena, &certkey.derIssuer,
&certkey.serialNumber, key));
loser:
return (SECFailure);
}
/*
* fill in keyUsage field of the cert based on the cert extension
* if the extension is not critical, then we allow all uses
*/
static SECStatus
GetKeyUsage(CERTCertificate *cert)
{
SECStatus rv;
SECItem tmpitem;
rv = CERT_FindKeyUsageExtension(cert, &tmpitem);
if (rv == SECSuccess) {
/* remember the actual value of the extension */
cert->rawKeyUsage = tmpitem.len ? tmpitem.data[0] : 0;
cert->keyUsagePresent = PR_TRUE;
cert->keyUsage = cert->rawKeyUsage;
PORT_Free(tmpitem.data);
tmpitem.data = NULL;
} else {
/* if the extension is not present, then we allow all uses */
cert->keyUsage = KU_ALL;
cert->rawKeyUsage = KU_ALL;
cert->keyUsagePresent = PR_FALSE;
}
if (CERT_GovtApprovedBitSet(cert)) {
cert->keyUsage |= KU_NS_GOVT_APPROVED;
cert->rawKeyUsage |= KU_NS_GOVT_APPROVED;
}
return (SECSuccess);
}
static SECStatus
findOIDinOIDSeqByTagNum(CERTOidSequence *seq, SECOidTag tagnum)
{
SECItem **oids;
SECItem *oid;
SECStatus rv = SECFailure;
if (seq != NULL) {
oids = seq->oids;
while (oids != NULL && *oids != NULL) {
oid = *oids;
if (SECOID_FindOIDTag(oid) == tagnum) {
rv = SECSuccess;
break;
}
oids++;
}
}
return rv;
}
/*
* fill in nsCertType field of the cert based on the cert extension
*/
SECStatus
cert_GetCertType(CERTCertificate *cert)
{
PRUint32 nsCertType;
if (cert->nsCertType) {
/* once set, no need to recalculate */
return SECSuccess;
}
nsCertType = cert_ComputeCertType(cert);
/* Assert that it is safe to cast &cert->nsCertType to "PRInt32 *" */
PORT_Assert(sizeof(cert->nsCertType) == sizeof(PRInt32));
PR_ATOMIC_SET((PRInt32 *)&cert->nsCertType, nsCertType);
return SECSuccess;
}
PRBool
cert_IsIPsecOID(CERTOidSequence *extKeyUsage)
{
if (findOIDinOIDSeqByTagNum(
extKeyUsage, SEC_OID_EXT_KEY_USAGE_IPSEC_IKE) == SECSuccess) {
return PR_TRUE;
}
if (findOIDinOIDSeqByTagNum(
extKeyUsage, SEC_OID_IPSEC_IKE_END) == SECSuccess) {
return PR_TRUE;
}
if (findOIDinOIDSeqByTagNum(
extKeyUsage, SEC_OID_IPSEC_IKE_INTERMEDIATE) == SECSuccess) {
return PR_TRUE;
}
/* these are now deprecated, but may show up. Treat them the same as IKE */
if (findOIDinOIDSeqByTagNum(
extKeyUsage, SEC_OID_EXT_KEY_USAGE_IPSEC_END) == SECSuccess) {
return PR_TRUE;
}
if (findOIDinOIDSeqByTagNum(
extKeyUsage, SEC_OID_EXT_KEY_USAGE_IPSEC_TUNNEL) == SECSuccess) {
return PR_TRUE;
}
if (findOIDinOIDSeqByTagNum(
extKeyUsage, SEC_OID_EXT_KEY_USAGE_IPSEC_USER) == SECSuccess) {
return PR_TRUE;
}
/* this one should probably be in cert_ComputeCertType and set all usages? */
if (findOIDinOIDSeqByTagNum(
extKeyUsage, SEC_OID_X509_ANY_EXT_KEY_USAGE) == SECSuccess) {
return PR_TRUE;
}
return PR_FALSE;
}
PRUint32
cert_ComputeCertType(CERTCertificate *cert)
{
SECStatus rv;
SECItem tmpitem;
SECItem encodedExtKeyUsage;
CERTOidSequence *extKeyUsage = NULL;
CERTBasicConstraints basicConstraint;
PRUint32 nsCertType = 0;
PRBool isCA = PR_FALSE;
tmpitem.data = NULL;
CERT_FindNSCertTypeExtension(cert, &tmpitem);
encodedExtKeyUsage.data = NULL;
rv = CERT_FindCertExtension(cert, SEC_OID_X509_EXT_KEY_USAGE,
&encodedExtKeyUsage);
if (rv == SECSuccess) {
extKeyUsage = CERT_DecodeOidSequence(&encodedExtKeyUsage);
}
rv = CERT_FindBasicConstraintExten(cert, &basicConstraint);
if (rv == SECSuccess) {
isCA = basicConstraint.isCA;
}
if (tmpitem.data != NULL || extKeyUsage != NULL) {
if (tmpitem.data == NULL || tmpitem.len == 0) {
nsCertType = 0;
} else {
nsCertType = tmpitem.data[0];
}
/* free tmpitem data pointer to avoid memory leak */
PORT_Free(tmpitem.data);
tmpitem.data = NULL;
/*
* for this release, we will allow SSL certs with an email address
* to be used for email
*/
if ((nsCertType & NS_CERT_TYPE_SSL_CLIENT) && cert->emailAddr &&
cert->emailAddr[0]) {
nsCertType |= NS_CERT_TYPE_EMAIL;
}
/*
* for this release, we will allow SSL intermediate CAs to be
* email intermediate CAs too.
*/
if (nsCertType & NS_CERT_TYPE_SSL_CA) {
nsCertType |= NS_CERT_TYPE_EMAIL_CA;
}
/*
* allow a cert with the extended key usage of EMail Protect
* to be used for email or as an email CA, if basic constraints
* indicates that it is a CA.
*/
if (findOIDinOIDSeqByTagNum(extKeyUsage,
SEC_OID_EXT_KEY_USAGE_EMAIL_PROTECT) ==
SECSuccess) {
nsCertType |= isCA ? NS_CERT_TYPE_EMAIL_CA : NS_CERT_TYPE_EMAIL;
}
if (findOIDinOIDSeqByTagNum(
extKeyUsage, SEC_OID_EXT_KEY_USAGE_SERVER_AUTH) == SECSuccess) {
nsCertType |= isCA ? NS_CERT_TYPE_SSL_CA : NS_CERT_TYPE_SSL_SERVER;
}
/*
* Treat certs with step-up OID as also having SSL server type.
* COMODO needs this behaviour until June 2020. See Bug 737802.
*/
if (findOIDinOIDSeqByTagNum(extKeyUsage,
SEC_OID_NS_KEY_USAGE_GOVT_APPROVED) ==
SECSuccess) {
nsCertType |= isCA ? NS_CERT_TYPE_SSL_CA : NS_CERT_TYPE_SSL_SERVER;
}
if (findOIDinOIDSeqByTagNum(
extKeyUsage, SEC_OID_EXT_KEY_USAGE_CLIENT_AUTH) == SECSuccess) {
nsCertType |= isCA ? NS_CERT_TYPE_SSL_CA : NS_CERT_TYPE_SSL_CLIENT;
}
if (cert_IsIPsecOID(extKeyUsage)) {
nsCertType |= isCA ? NS_CERT_TYPE_IPSEC_CA : NS_CERT_TYPE_IPSEC;
}
if (findOIDinOIDSeqByTagNum(
extKeyUsage, SEC_OID_EXT_KEY_USAGE_CODE_SIGN) == SECSuccess) {
nsCertType |= isCA ? NS_CERT_TYPE_OBJECT_SIGNING_CA : NS_CERT_TYPE_OBJECT_SIGNING;
}
if (findOIDinOIDSeqByTagNum(
extKeyUsage, SEC_OID_EXT_KEY_USAGE_TIME_STAMP) == SECSuccess) {
nsCertType |= EXT_KEY_USAGE_TIME_STAMP;
}
if (findOIDinOIDSeqByTagNum(extKeyUsage, SEC_OID_OCSP_RESPONDER) ==
SECSuccess) {
nsCertType |= EXT_KEY_USAGE_STATUS_RESPONDER;
}
} else {
/* If no NS Cert Type extension and no EKU extension, then */
nsCertType = 0;
if (CERT_IsCACert(cert, &nsCertType))
nsCertType |= EXT_KEY_USAGE_STATUS_RESPONDER;
/* if the basic constraint extension says the cert is a CA, then
allow SSL CA and EMAIL CA and Status Responder */
if (isCA) {
nsCertType |= (NS_CERT_TYPE_SSL_CA | NS_CERT_TYPE_EMAIL_CA |
EXT_KEY_USAGE_STATUS_RESPONDER);
}
/* allow any ssl or email (no ca or object signing. */
nsCertType |= NS_CERT_TYPE_SSL_CLIENT | NS_CERT_TYPE_SSL_SERVER |
NS_CERT_TYPE_EMAIL;
}
/* IPSEC is allowed to use SSL client and server certs as well as email certs */
if (nsCertType & (NS_CERT_TYPE_SSL_CLIENT | NS_CERT_TYPE_SSL_SERVER | NS_CERT_TYPE_EMAIL)) {
nsCertType |= NS_CERT_TYPE_IPSEC;
}
if (nsCertType & (NS_CERT_TYPE_SSL_CA | NS_CERT_TYPE_EMAIL_CA)) {
nsCertType |= NS_CERT_TYPE_IPSEC_CA;
}
if (encodedExtKeyUsage.data != NULL) {
PORT_Free(encodedExtKeyUsage.data);
}
if (extKeyUsage != NULL) {
CERT_DestroyOidSequence(extKeyUsage);
}
return nsCertType;
}
/*
* cert_GetKeyID() - extract or generate the subjectKeyID from a certificate
*/
SECStatus
cert_GetKeyID(CERTCertificate *cert)
{
SECItem tmpitem;
SECStatus rv;
cert->subjectKeyID.len = 0;
/* see of the cert has a key identifier extension */
rv = CERT_FindSubjectKeyIDExtension(cert, &tmpitem);
if (rv == SECSuccess) {
cert->subjectKeyID.data =
(unsigned char *)PORT_ArenaAlloc(cert->arena, tmpitem.len);
if (cert->subjectKeyID.data != NULL) {
PORT_Memcpy(cert->subjectKeyID.data, tmpitem.data, tmpitem.len);
cert->subjectKeyID.len = tmpitem.len;
cert->keyIDGenerated = PR_FALSE;
}
PORT_Free(tmpitem.data);
}
/* if the cert doesn't have a key identifier extension, then generate one*/
if (cert->subjectKeyID.len == 0) {
/*
* pkix says that if the subjectKeyID is not present, then we should
* use the SHA-1 hash of the DER-encoded publicKeyInfo from the cert
*/
cert->subjectKeyID.data =
(unsigned char *)PORT_ArenaAlloc(cert->arena, SHA1_LENGTH);
if (cert->subjectKeyID.data != NULL) {
rv = PK11_HashBuf(SEC_OID_SHA1, cert->subjectKeyID.data,
cert->derPublicKey.data, cert->derPublicKey.len);
if (rv == SECSuccess) {
cert->subjectKeyID.len = SHA1_LENGTH;
}
}
}
if (cert->subjectKeyID.len == 0) {
return (SECFailure);
}
return (SECSuccess);
}
static PRBool
cert_IsRootCert(CERTCertificate *cert)
{
SECStatus rv;
SECItem tmpitem;
/* cache the authKeyID extension, if present */
cert->authKeyID = CERT_FindAuthKeyIDExten(cert->arena, cert);
/* it MUST be self-issued to be a root */
if (cert->derIssuer.len == 0 ||
!SECITEM_ItemsAreEqual(&cert->derIssuer, &cert->derSubject)) {
return PR_FALSE;
}
/* check the authKeyID extension */
if (cert->authKeyID) {
/* authority key identifier is present */
if (cert->authKeyID->keyID.len > 0) {
/* the keyIdentifier field is set, look for subjectKeyID */
rv = CERT_FindSubjectKeyIDExtension(cert, &tmpitem);
if (rv == SECSuccess) {
PRBool match;
/* also present, they MUST match for it to be a root */
match =
SECITEM_ItemsAreEqual(&cert->authKeyID->keyID, &tmpitem);
PORT_Free(tmpitem.data);
if (!match)
return PR_FALSE; /* else fall through */
} else {
/* the subject key ID is required when AKI is present */
return PR_FALSE;
}
}
if (cert->authKeyID->authCertIssuer) {
SECItem *caName;
caName = (SECItem *)CERT_GetGeneralNameByType(
cert->authKeyID->authCertIssuer, certDirectoryName, PR_TRUE);
if (caName) {
if (!SECITEM_ItemsAreEqual(&cert->derIssuer, caName)) {
return PR_FALSE;
} /* else fall through */
} /* else ??? could not get general name as directory name? */
}
if (cert->authKeyID->authCertSerialNumber.len > 0) {
if (!SECITEM_ItemsAreEqual(
&cert->serialNumber,
&cert->authKeyID->authCertSerialNumber)) {
return PR_FALSE;
} /* else fall through */
}
/* all of the AKI fields that were present passed the test */
return PR_TRUE;
}
/* else the AKI was not present, so this is a root */
return PR_TRUE;
}
/*
* take a DER certificate and decode it into a certificate structure
*/
CERTCertificate *
CERT_DecodeDERCertificate(SECItem *derSignedCert, PRBool copyDER,
char *nickname)
{
CERTCertificate *cert;
PLArenaPool *arena;
void *data;
int rv;
int len;
char *tmpname;
/* make a new arena */
arena = PORT_NewArena(DER_DEFAULT_CHUNKSIZE);
if (!arena) {
return 0;
}
/* allocate the certificate structure */
cert = (CERTCertificate *)PORT_ArenaZAlloc(arena, sizeof(CERTCertificate));
if (!cert) {
goto loser;
}
cert->arena = arena;
if (copyDER) {
/* copy the DER data for the cert into this arena */
data = (void *)PORT_ArenaAlloc(arena, derSignedCert->len);
if (!data) {
goto loser;
}
cert->derCert.data = (unsigned char *)data;
cert->derCert.len = derSignedCert->len;
PORT_Memcpy(data, derSignedCert->data, derSignedCert->len);
} else {
/* point to passed in DER data */
cert->derCert = *derSignedCert;
}
/* decode the certificate info */
rv = SEC_QuickDERDecodeItem(arena, cert, SEC_SignedCertificateTemplate,
&cert->derCert);
if (rv) {
goto loser;
}
if (cert_HasUnknownCriticalExten(cert->extensions) == PR_TRUE) {
cert->options.bits.hasUnsupportedCriticalExt = PR_TRUE;
}
/* generate and save the database key for the cert */
rv = CERT_KeyFromIssuerAndSN(arena, &cert->derIssuer, &cert->serialNumber,
&cert->certKey);
if (rv) {
goto loser;
}
/* set the nickname */
if (nickname == NULL) {
cert->nickname = NULL;
} else {
/* copy and install the nickname */
len = PORT_Strlen(nickname) + 1;
cert->nickname = (char *)PORT_ArenaAlloc(arena, len);
if (cert->nickname == NULL) {
goto loser;
}
PORT_Memcpy(cert->nickname, nickname, len);
}
/* set the email address */
cert->emailAddr = cert_GetCertificateEmailAddresses(cert);
/* initialize the subjectKeyID */
rv = cert_GetKeyID(cert);
if (rv != SECSuccess) {
goto loser;
}
/* initialize keyUsage */
rv = GetKeyUsage(cert);
if (rv != SECSuccess) {
goto loser;
}
/* determine if this is a root cert */
cert->isRoot = cert_IsRootCert(cert);
/* initialize the certType */
rv = cert_GetCertType(cert);
if (rv != SECSuccess) {
goto loser;
}
tmpname = CERT_NameToAscii(&cert->subject);
if (tmpname != NULL) {
cert->subjectName = PORT_ArenaStrdup(cert->arena, tmpname);
PORT_Free(tmpname);
}
tmpname = CERT_NameToAscii(&cert->issuer);
if (tmpname != NULL) {
cert->issuerName = PORT_ArenaStrdup(cert->arena, tmpname);
PORT_Free(tmpname);
}
cert->referenceCount = 1;
cert->slot = NULL;
cert->pkcs11ID = CK_INVALID_HANDLE;
cert->dbnickname = NULL;
return (cert);
loser:
if (arena) {
PORT_FreeArena(arena, PR_FALSE);
}
return (0);
}
CERTCertificate *
__CERT_DecodeDERCertificate(SECItem *derSignedCert, PRBool copyDER,
char *nickname)
{
return CERT_DecodeDERCertificate(derSignedCert, copyDER, nickname);
}
CERTValidity *
CERT_CreateValidity(PRTime notBefore, PRTime notAfter)
{
CERTValidity *v;
int rv;
PLArenaPool *arena;
if (notBefore > notAfter) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return NULL;
}
arena = PORT_NewArena(DER_DEFAULT_CHUNKSIZE);
if (!arena) {
return (0);
}
v = (CERTValidity *)PORT_ArenaZAlloc(arena, sizeof(CERTValidity));
if (v) {
v->arena = arena;
rv = DER_EncodeTimeChoice(arena, &v->notBefore, notBefore);
if (rv)
goto loser;
rv = DER_EncodeTimeChoice(arena, &v->notAfter, notAfter);
if (rv)
goto loser;
}
return v;
loser:
CERT_DestroyValidity(v);
return 0;
}
SECStatus
CERT_CopyValidity(PLArenaPool *arena, CERTValidity *to, CERTValidity *from)
{
SECStatus rv;
CERT_DestroyValidity(to);
to->arena = arena;
rv = SECITEM_CopyItem(arena, &to->notBefore, &from->notBefore);
if (rv)
return rv;
rv = SECITEM_CopyItem(arena, &to->notAfter, &from->notAfter);
return rv;
}
void
CERT_DestroyValidity(CERTValidity *v)
{
if (v && v->arena) {
PORT_FreeArena(v->arena, PR_FALSE);
}
return;
}
/*
** Amount of time that a certifiate is allowed good before it is actually
** good. This is used for pending certificates, ones that are about to be
** valid. The slop is designed to allow for some variance in the clocks
** of the machine checking the certificate.
*/
#define PENDING_SLOP (24L * 60L * 60L) /* seconds per day */
static PRInt32 pendingSlop = PENDING_SLOP; /* seconds */
PRInt32
CERT_GetSlopTime(void)
{
return pendingSlop; /* seconds */
}
SECStatus
CERT_SetSlopTime(PRInt32 slop) /* seconds */
{
if (slop < 0)
return SECFailure;
pendingSlop = slop;
return SECSuccess;
}
SECStatus
CERT_GetCertTimes(const CERTCertificate *c, PRTime *notBefore, PRTime *notAfter)
{
SECStatus rv;
if (!c || !notBefore || !notAfter) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return SECFailure;
}
/* convert DER not-before time */
rv = DER_DecodeTimeChoice(notBefore, &c->validity.notBefore);
if (rv) {
return (SECFailure);
}
/* convert DER not-after time */
rv = DER_DecodeTimeChoice(notAfter, &c->validity.notAfter);
if (rv) {
return (SECFailure);
}
return (SECSuccess);
}
/*
* Check the validity times of a certificate
*/
SECCertTimeValidity
CERT_CheckCertValidTimes(const CERTCertificate *c, PRTime t,
PRBool allowOverride)
{
PRTime notBefore, notAfter, llPendingSlop, tmp1;
SECStatus rv;
if (!c) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return (secCertTimeUndetermined);
}
/* if cert is already marked OK, then don't bother to check */
if (allowOverride && c->timeOK) {
return (secCertTimeValid);
}
rv = CERT_GetCertTimes(c, &notBefore, &notAfter);
if (rv) {
return (secCertTimeExpired); /*XXX is this the right thing to do here?*/
}
LL_I2L(llPendingSlop, pendingSlop);
/* convert to micro seconds */
LL_UI2L(tmp1, PR_USEC_PER_SEC);
LL_MUL(llPendingSlop, llPendingSlop, tmp1);
LL_SUB(notBefore, notBefore, llPendingSlop);
if (LL_CMP(t, <, notBefore)) {
PORT_SetError(SEC_ERROR_EXPIRED_CERTIFICATE);
return (secCertTimeNotValidYet);
}
if (LL_CMP(t, >, notAfter)) {
PORT_SetError(SEC_ERROR_EXPIRED_CERTIFICATE);
return (secCertTimeExpired);
}
return (secCertTimeValid);
}
SECStatus
SEC_GetCrlTimes(CERTCrl *date, PRTime *notBefore, PRTime *notAfter)
{
int rv;
/* convert DER not-before time */
rv = DER_DecodeTimeChoice(notBefore, &date->lastUpdate);
if (rv) {
return (SECFailure);
}
/* convert DER not-after time */
if (date->nextUpdate.data) {
rv = DER_DecodeTimeChoice(notAfter, &date->nextUpdate);
if (rv) {
return (SECFailure);
}
} else {
LL_I2L(*notAfter, 0L);
}
return (SECSuccess);
}
/* These routines should probably be combined with the cert
* routines using an common extraction routine.
*/
SECCertTimeValidity
SEC_CheckCrlTimes(CERTCrl *crl, PRTime t)
{
PRTime notBefore, notAfter, llPendingSlop, tmp1;
SECStatus rv;
if (!crl) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return (secCertTimeUndetermined);
}
rv = SEC_GetCrlTimes(crl, &notBefore, &notAfter);
if (rv) {
return (secCertTimeExpired);
}
LL_I2L(llPendingSlop, pendingSlop);
/* convert to micro seconds */
LL_I2L(tmp1, PR_USEC_PER_SEC);
LL_MUL(llPendingSlop, llPendingSlop, tmp1);
LL_SUB(notBefore, notBefore, llPendingSlop);
if (LL_CMP(t, <, notBefore)) {
PORT_SetError(SEC_ERROR_CRL_EXPIRED);
return (secCertTimeNotValidYet);
}
/* If next update is omitted and the test for notBefore passes, then
we assume that the crl is up to date.
*/
if (LL_IS_ZERO(notAfter)) {
return (secCertTimeValid);
}
if (LL_CMP(t, >, notAfter)) {
PORT_SetError(SEC_ERROR_CRL_EXPIRED);
return (secCertTimeExpired);
}
return (secCertTimeValid);
}
PRBool
SEC_CrlIsNewer(CERTCrl *inNew, CERTCrl *old)
{
PRTime newNotBefore, newNotAfter;
PRTime oldNotBefore, oldNotAfter;
SECStatus rv;
/* problems with the new CRL? reject it */
rv = SEC_GetCrlTimes(inNew, &newNotBefore, &newNotAfter);
if (rv)
return PR_FALSE;
/* problems with the old CRL? replace it */
rv = SEC_GetCrlTimes(old, &oldNotBefore, &oldNotAfter);
if (rv)
return PR_TRUE;
/* Question: what about the notAfter's? */
return ((PRBool)LL_CMP(oldNotBefore, <, newNotBefore));
}
/*
* return required key usage and cert type based on cert usage
*/
SECStatus
CERT_KeyUsageAndTypeForCertUsage(SECCertUsage usage, PRBool ca,
unsigned int *retKeyUsage,
unsigned int *retCertType)
{
unsigned int requiredKeyUsage = 0;
unsigned int requiredCertType = 0;
if (ca) {
switch (usage) {
case certUsageSSLServerWithStepUp:
requiredKeyUsage = KU_NS_GOVT_APPROVED | KU_KEY_CERT_SIGN;
requiredCertType = NS_CERT_TYPE_SSL_CA;
break;
case certUsageSSLClient:
requiredKeyUsage = KU_KEY_CERT_SIGN;
requiredCertType = NS_CERT_TYPE_SSL_CA;
break;
case certUsageSSLServer:
requiredKeyUsage = KU_KEY_CERT_SIGN;
requiredCertType = NS_CERT_TYPE_SSL_CA;
break;
case certUsageIPsec:
requiredKeyUsage = KU_KEY_CERT_SIGN;
requiredCertType = NS_CERT_TYPE_IPSEC_CA;
break;
case certUsageSSLCA:
requiredKeyUsage = KU_KEY_CERT_SIGN;
requiredCertType = NS_CERT_TYPE_SSL_CA;
break;
case certUsageEmailSigner:
requiredKeyUsage = KU_KEY_CERT_SIGN;
requiredCertType = NS_CERT_TYPE_EMAIL_CA;
break;
case certUsageEmailRecipient:
requiredKeyUsage = KU_KEY_CERT_SIGN;
requiredCertType = NS_CERT_TYPE_EMAIL_CA;
break;
case certUsageObjectSigner:
requiredKeyUsage = KU_KEY_CERT_SIGN;
requiredCertType = NS_CERT_TYPE_OBJECT_SIGNING_CA;
break;
case certUsageAnyCA:
case certUsageVerifyCA:
case certUsageStatusResponder:
requiredKeyUsage = KU_KEY_CERT_SIGN;
requiredCertType = NS_CERT_TYPE_OBJECT_SIGNING_CA |
NS_CERT_TYPE_EMAIL_CA | NS_CERT_TYPE_SSL_CA;
break;
default:
PORT_Assert(0);
goto loser;
}
} else {
switch (usage) {
case certUsageSSLClient:
/*
* RFC 5280 lists digitalSignature and keyAgreement for
* id-kp-clientAuth. NSS does not support the *_fixed_dh and
* *_fixed_ecdh client certificate types.
*/
requiredKeyUsage = KU_DIGITAL_SIGNATURE;
requiredCertType = NS_CERT_TYPE_SSL_CLIENT;
break;
case certUsageSSLServer:
requiredKeyUsage = KU_KEY_AGREEMENT_OR_ENCIPHERMENT;
requiredCertType = NS_CERT_TYPE_SSL_SERVER;
break;
case certUsageIPsec:
/* RFC 4945 Section 5.1.3.2 */
requiredKeyUsage = KU_DIGITAL_SIGNATURE_OR_NON_REPUDIATION;
requiredCertType = NS_CERT_TYPE_IPSEC;
break;
case certUsageSSLServerWithStepUp:
requiredKeyUsage =
KU_KEY_AGREEMENT_OR_ENCIPHERMENT | KU_NS_GOVT_APPROVED;
requiredCertType = NS_CERT_TYPE_SSL_SERVER;
break;
case certUsageSSLCA:
requiredKeyUsage = KU_KEY_CERT_SIGN;
requiredCertType = NS_CERT_TYPE_SSL_CA;
break;
case certUsageEmailSigner:
requiredKeyUsage = KU_DIGITAL_SIGNATURE_OR_NON_REPUDIATION;
requiredCertType = NS_CERT_TYPE_EMAIL;
break;
case certUsageEmailRecipient:
requiredKeyUsage = KU_KEY_AGREEMENT_OR_ENCIPHERMENT;
requiredCertType = NS_CERT_TYPE_EMAIL;
break;
case certUsageObjectSigner:
/* RFC 5280 lists only digitalSignature for id-kp-codeSigning.
*/
requiredKeyUsage = KU_DIGITAL_SIGNATURE;
requiredCertType = NS_CERT_TYPE_OBJECT_SIGNING;
break;
case certUsageStatusResponder:
requiredKeyUsage = KU_DIGITAL_SIGNATURE_OR_NON_REPUDIATION;
requiredCertType = EXT_KEY_USAGE_STATUS_RESPONDER;
break;
default:
PORT_Assert(0);
goto loser;
}
}
if (retKeyUsage != NULL) {
*retKeyUsage = requiredKeyUsage;
}
if (retCertType != NULL) {
*retCertType = requiredCertType;
}
return (SECSuccess);
loser:
return (SECFailure);
}
/*
* check the key usage of a cert against a set of required values
*/
SECStatus
CERT_CheckKeyUsage(CERTCertificate *cert, unsigned int requiredUsage)
{
if (!cert) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return SECFailure;
}
/* choose between key agreement or key encipherment based on key
* type in cert
*/
if (requiredUsage & KU_KEY_AGREEMENT_OR_ENCIPHERMENT) {
KeyType keyType = CERT_GetCertKeyType(&cert->subjectPublicKeyInfo);
/* turn off the special bit */
requiredUsage &= (~KU_KEY_AGREEMENT_OR_ENCIPHERMENT);
switch (keyType) {
case rsaKey:
requiredUsage |= KU_KEY_ENCIPHERMENT;
break;
case rsaPssKey:
case dsaKey:
requiredUsage |= KU_DIGITAL_SIGNATURE;
break;
case dhKey:
requiredUsage |= KU_KEY_AGREEMENT;
break;
case ecKey:
/* Accept either signature or agreement. */
if (!(cert->keyUsage &
(KU_DIGITAL_SIGNATURE | KU_KEY_AGREEMENT)))
goto loser;
break;
default:
goto loser;
}
}
/* Allow either digital signature or non-repudiation */
if (requiredUsage & KU_DIGITAL_SIGNATURE_OR_NON_REPUDIATION) {
/* turn off the special bit */
requiredUsage &= (~KU_DIGITAL_SIGNATURE_OR_NON_REPUDIATION);
if (!(cert->keyUsage & (KU_DIGITAL_SIGNATURE | KU_NON_REPUDIATION)))
goto loser;
}
if ((cert->keyUsage & requiredUsage) == requiredUsage)
return SECSuccess;
loser:
PORT_SetError(SEC_ERROR_INADEQUATE_KEY_USAGE);
return SECFailure;
}
CERTCertificate *
CERT_DupCertificate(CERTCertificate *c)
{
if (c) {
NSSCertificate *tmp = STAN_GetNSSCertificate(c);
nssCertificate_AddRef(tmp);
}
return c;
}
SECStatus
CERT_GetCertificateDer(const CERTCertificate *c, SECItem *der)
{
if (!c || !der) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return SECFailure;
}
*der = c->derCert;
return SECSuccess;
}
/*
* Allow use of default cert database, so that apps(such as mozilla) don't
* have to pass the handle all over the place.
*/
static CERTCertDBHandle *default_cert_db_handle = 0;
void
CERT_SetDefaultCertDB(CERTCertDBHandle *handle)
{
default_cert_db_handle = handle;
return;
}
CERTCertDBHandle *
CERT_GetDefaultCertDB(void)
{
return (default_cert_db_handle);
}
/* XXX this would probably be okay/better as an xp routine? */
static void
sec_lower_string(char *s)
{
if (s == NULL) {
return;
}
while (*s) {
*s = PORT_Tolower(*s);
s++;
}
return;
}
static PRBool
cert_IsIPAddr(const char *hn)
{
PRBool isIPaddr = PR_FALSE;
PRNetAddr netAddr;
isIPaddr = (PR_SUCCESS == PR_StringToNetAddr(hn, &netAddr));
return isIPaddr;
}
/*
** Add a domain name to the list of names that the user has explicitly
** allowed (despite cert name mismatches) for use with a server cert.
*/
SECStatus
CERT_AddOKDomainName(CERTCertificate *cert, const char *hn)
{
CERTOKDomainName *domainOK;
int newNameLen;
if (!hn || !(newNameLen = strlen(hn))) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return SECFailure;
}
domainOK = (CERTOKDomainName *)PORT_ArenaZAlloc(cert->arena, sizeof(*domainOK));
if (!domainOK) {
return SECFailure; /* error code is already set. */
}
domainOK->name = (char *)PORT_ArenaZAlloc(cert->arena, newNameLen + 1);
if (!domainOK->name) {
return SECFailure; /* error code is already set. */
}
PORT_Strncpy(domainOK->name, hn, newNameLen + 1);
sec_lower_string(domainOK->name);
/* put at head of list. */
domainOK->next = cert->domainOK;
cert->domainOK = domainOK;
return SECSuccess;
}
/* returns SECSuccess if hn matches pattern cn,
** returns SECFailure with SSL_ERROR_BAD_CERT_DOMAIN if no match,
** returns SECFailure with some other error code if another error occurs.
**
** This function may modify string cn, so caller must pass a modifiable copy.
*/
static SECStatus
cert_TestHostName(char *cn, const char *hn)
{
static int useShellExp = -1;
if (useShellExp < 0) {
useShellExp = (NULL != PR_GetEnvSecure("NSS_USE_SHEXP_IN_CERT_NAME"));
}
if (useShellExp) {
/* Backward compatible code, uses Shell Expressions (SHEXP). */
int regvalid = PORT_RegExpValid(cn);
if (regvalid != NON_SXP) {
SECStatus rv;
/* cn is a regular expression, try to match the shexp */
int match = PORT_RegExpCaseSearch(hn, cn);
if (match == 0) {
rv = SECSuccess;
} else {
PORT_SetError(SSL_ERROR_BAD_CERT_DOMAIN);
rv = SECFailure;
}
return rv;
}
} else {
/* New approach conforms to RFC 6125. */
char *wildcard = PORT_Strchr(cn, '*');
char *firstcndot = PORT_Strchr(cn, '.');
char *secondcndot =
firstcndot ? PORT_Strchr(firstcndot + 1, '.') : NULL;
char *firsthndot = PORT_Strchr(hn, '.');
/* For a cn pattern to be considered valid, the wildcard character...
* - may occur only in a DNS name with at least 3 components, and
* - may occur only as last character in the first component, and
* - may be preceded by additional characters, and
* - must not be preceded by an IDNA ACE prefix (xn--)
*/
if (wildcard && secondcndot && secondcndot[1] && firsthndot &&
firstcndot - wildcard == 1 /* wildcard is last char in first component */
&& secondcndot - firstcndot > 1 /* second component is non-empty */
&& PORT_Strrchr(cn, '*') == wildcard /* only one wildcard in cn */
&& !PORT_Strncasecmp(cn, hn, wildcard - cn) &&
!PORT_Strcasecmp(firstcndot, firsthndot)
/* If hn starts with xn--, then cn must start with wildcard */
&& (PORT_Strncasecmp(hn, "xn--", 4) || wildcard == cn)) {
/* valid wildcard pattern match */
return SECSuccess;
}
}
/* String cn has no wildcard or shell expression.
* Compare entire string hn with cert name.
*/
if (PORT_Strcasecmp(hn, cn) == 0) {
return SECSuccess;
}
PORT_SetError(SSL_ERROR_BAD_CERT_DOMAIN);
return SECFailure;
}
SECStatus
cert_VerifySubjectAltName(const CERTCertificate *cert, const char *hn)
{
PLArenaPool *arena = NULL;
CERTGeneralName *nameList = NULL;
CERTGeneralName *current;
char *cn;
int cnBufLen;
int DNSextCount = 0;
int IPextCount = 0;
PRBool isIPaddr = PR_FALSE;
SECStatus rv = SECFailure;
SECItem subAltName;
PRNetAddr netAddr;
char cnbuf[128];
subAltName.data = NULL;
cn = cnbuf;
cnBufLen = sizeof cnbuf;
rv = CERT_FindCertExtension(cert, SEC_OID_X509_SUBJECT_ALT_NAME,
&subAltName);
if (rv != SECSuccess) {
goto fail;
}
isIPaddr = (PR_SUCCESS == PR_StringToNetAddr(hn, &netAddr));
arena = PORT_NewArena(DER_DEFAULT_CHUNKSIZE);
if (!arena)
goto fail;
nameList = current = CERT_DecodeAltNameExtension(arena, &subAltName);
if (!current)
goto fail;
do {
switch (current->type) {
case certDNSName:
if (!isIPaddr) {
/* DNS name current->name.other.data is not null terminated.
** so must copy it.
*/
int cnLen = current->name.other.len;
rv = CERT_RFC1485_EscapeAndQuote(
cn, cnBufLen, (char *)current->name.other.data, cnLen);
if (rv != SECSuccess &&
PORT_GetError() == SEC_ERROR_OUTPUT_LEN) {
cnBufLen =
cnLen * 3 + 3; /* big enough for worst case */
cn = (char *)PORT_ArenaAlloc(arena, cnBufLen);
if (!cn)
goto fail;
rv = CERT_RFC1485_EscapeAndQuote(
cn, cnBufLen, (char *)current->name.other.data,
cnLen);
}
if (rv == SECSuccess)
rv = cert_TestHostName(cn, hn);
if (rv == SECSuccess)
goto finish;
}
DNSextCount++;
break;
case certIPAddress:
if (isIPaddr) {
int match = 0;
PRIPv6Addr v6Addr;
if (current->name.other.len == 4 && /* IP v4 address */
netAddr.inet.family == PR_AF_INET) {
match = !memcmp(&netAddr.inet.ip,
current->name.other.data, 4);
} else if (current->name.other.len ==
16 && /* IP v6 address */
netAddr.ipv6.family == PR_AF_INET6) {
match = !memcmp(&netAddr.ipv6.ip,
current->name.other.data, 16);
} else if (current->name.other.len ==
16 && /* IP v6 address */
netAddr.inet.family == PR_AF_INET) {
/* convert netAddr to ipv6, then compare. */
/* ipv4 must be in Network Byte Order on input. */
PR_ConvertIPv4AddrToIPv6(netAddr.inet.ip, &v6Addr);
match = !memcmp(&v6Addr, current->name.other.data, 16);
} else if (current->name.other.len == 4 && /* IP v4 address */
netAddr.inet.family == PR_AF_INET6) {
/* convert netAddr to ipv6, then compare. */
PRUint32 ipv4 = (current->name.other.data[0] << 24) |
(current->name.other.data[1] << 16) |
(current->name.other.data[2] << 8) |
current->name.other.data[3];
/* ipv4 must be in Network Byte Order on input. */
PR_ConvertIPv4AddrToIPv6(PR_htonl(ipv4), &v6Addr);
match = !memcmp(&netAddr.ipv6.ip, &v6Addr, 16);
}
if (match) {
rv = SECSuccess;
goto finish;
}
}
IPextCount++;
break;
default:
break;
}
current = CERT_GetNextGeneralName(current);
} while (current != nameList);
fail:
if (!(isIPaddr ? IPextCount : DNSextCount)) {
/* no relevant value in the extension was found. */
PORT_SetError(SEC_ERROR_EXTENSION_NOT_FOUND);
} else {
PORT_SetError(SSL_ERROR_BAD_CERT_DOMAIN);
}
rv = SECFailure;
finish:
/* Don't free nameList, it's part of the arena. */
if (arena) {
PORT_FreeArena(arena, PR_FALSE);
}
if (subAltName.data) {
SECITEM_FreeItem(&subAltName, PR_FALSE);
}
return rv;
}
/*
* If found:
* - subAltName contains the extension (caller must free)
* - return value is the decoded namelist (allocated off arena)
* if not found, or if failure to decode:
* - return value is NULL
*/
CERTGeneralName *
cert_GetSubjectAltNameList(const CERTCertificate *cert, PLArenaPool *arena)
{
CERTGeneralName *nameList = NULL;
SECStatus rv = SECFailure;
SECItem subAltName;
if (!cert || !arena)
return NULL;
subAltName.data = NULL;
rv = CERT_FindCertExtension(cert, SEC_OID_X509_SUBJECT_ALT_NAME,
&subAltName);
if (rv != SECSuccess)
return NULL;
nameList = CERT_DecodeAltNameExtension(arena, &subAltName);
SECITEM_FreeItem(&subAltName, PR_FALSE);
return nameList;
}
PRUint32
cert_CountDNSPatterns(CERTGeneralName *firstName)
{
CERTGeneralName *current;
PRUint32 count = 0;
if (!firstName)
return 0;
current = firstName;
do {
switch (current->type) {
case certDNSName:
case certIPAddress:
++count;
break;
default:
break;
}
current = CERT_GetNextGeneralName(current);
} while (current != firstName);
return count;
}
#ifndef INET6_ADDRSTRLEN
#define INET6_ADDRSTRLEN 46
#endif
/* will fill nickNames,
* will allocate all data from nickNames->arena,
* numberOfGeneralNames should have been obtained from cert_CountDNSPatterns,
* will ensure the numberOfGeneralNames matches the number of output entries.
*/
SECStatus
cert_GetDNSPatternsFromGeneralNames(CERTGeneralName *firstName,
PRUint32 numberOfGeneralNames,
CERTCertNicknames *nickNames)
{
CERTGeneralName *currentInput;
char **currentOutput;
if (!firstName || !nickNames || !numberOfGeneralNames)
return SECFailure;
nickNames->numnicknames = numberOfGeneralNames;
nickNames->nicknames = PORT_ArenaAlloc(
nickNames->arena, sizeof(char *) * numberOfGeneralNames);
if (!nickNames->nicknames)
return SECFailure;
currentInput = firstName;
currentOutput = nickNames->nicknames;
do {
char *cn = NULL;
char ipbuf[INET6_ADDRSTRLEN];
PRNetAddr addr;
if (numberOfGeneralNames < 1) {
/* internal consistency error */
return SECFailure;
}
switch (currentInput->type) {
case certDNSName:
/* DNS name currentInput->name.other.data is not null
*terminated.
** so must copy it.
*/
cn = (char *)PORT_ArenaAlloc(nickNames->arena,
currentInput->name.other.len + 1);
if (!cn)
return SECFailure;
PORT_Memcpy(cn, currentInput->name.other.data,
currentInput->name.other.len);
cn[currentInput->name.other.len] = 0;
break;
case certIPAddress:
if (currentInput->name.other.len == 4) {
addr.inet.family = PR_AF_INET;
memcpy(&addr.inet.ip, currentInput->name.other.data,
currentInput->name.other.len);
} else if (currentInput->name.other.len == 16) {
addr.ipv6.family = PR_AF_INET6;
memcpy(&addr.ipv6.ip, currentInput->name.other.data,
currentInput->name.other.len);
}
if (PR_NetAddrToString(&addr, ipbuf, sizeof(ipbuf)) ==
PR_FAILURE)
return SECFailure;
cn = PORT_ArenaStrdup(nickNames->arena, ipbuf);
if (!cn)
return SECFailure;
break;
default:
break;
}
if (cn) {
*currentOutput = cn;
nickNames->totallen += PORT_Strlen(cn);
++currentOutput;
--numberOfGeneralNames;
}
currentInput = CERT_GetNextGeneralName(currentInput);
} while (currentInput != firstName);
return (numberOfGeneralNames == 0) ? SECSuccess : SECFailure;
}
/*
* Collect all valid DNS names from the given cert.
* The output arena will reference some temporaray data,
* but this saves us from dealing with two arenas.
* The caller may free all data by freeing CERTCertNicknames->arena.
*/
CERTCertNicknames *
CERT_GetValidDNSPatternsFromCert(CERTCertificate *cert)
{
CERTGeneralName *generalNames;
CERTCertNicknames *nickNames;
PLArenaPool *arena;
char *singleName;
arena = PORT_NewArena(DER_DEFAULT_CHUNKSIZE);
if (!arena) {
return NULL;
}
nickNames = PORT_ArenaAlloc(arena, sizeof(CERTCertNicknames));
if (!nickNames) {
PORT_FreeArena(arena, PR_FALSE);
return NULL;
}
/* init the structure */
nickNames->arena = arena;
nickNames->head = NULL;
nickNames->numnicknames = 0;
nickNames->nicknames = NULL;
nickNames->totallen = 0;
generalNames = cert_GetSubjectAltNameList(cert, arena);
if (generalNames) {
SECStatus rv_getnames = SECFailure;
PRUint32 numNames = cert_CountDNSPatterns(generalNames);
if (numNames) {
rv_getnames = cert_GetDNSPatternsFromGeneralNames(
generalNames, numNames, nickNames);
}
/* if there were names, we'll exit now, either with success or failure
*/
if (numNames) {
if (rv_getnames == SECSuccess) {
return nickNames;
}
/* failure to produce output */
PORT_FreeArena(arena, PR_FALSE);
return NULL;
}
}
/* no SAN extension or no names found in extension */
singleName = CERT_GetCommonName(&cert->subject);
if (singleName) {
nickNames->numnicknames = 1;
nickNames->nicknames = PORT_ArenaAlloc(arena, sizeof(char *));
if (nickNames->nicknames) {
*nickNames->nicknames = PORT_ArenaStrdup(arena, singleName);
}
PORT_Free(singleName);
/* Did we allocate both the buffer of pointers and the string? */
if (nickNames->nicknames && *nickNames->nicknames) {
return nickNames;
}
}
PORT_FreeArena(arena, PR_FALSE);
return NULL;
}
/* Make sure that the name of the host we are connecting to matches the
* name that is incoded in the common-name component of the certificate
* that they are using.
*/
SECStatus
CERT_VerifyCertName(const CERTCertificate *cert, const char *hn)
{
char *cn;
SECStatus rv;
CERTOKDomainName *domainOK;
if (!hn || !strlen(hn)) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return SECFailure;
}
/* if the name is one that the user has already approved, it's OK. */
for (domainOK = cert->domainOK; domainOK; domainOK = domainOK->next) {
if (0 == PORT_Strcasecmp(hn, domainOK->name)) {
return SECSuccess;
}
}
/* Per RFC 2818, if the SubjectAltName extension is present, it must
** be used as the cert's identity.
*/
rv = cert_VerifySubjectAltName(cert, hn);
if (rv == SECSuccess || PORT_GetError() != SEC_ERROR_EXTENSION_NOT_FOUND)
return rv;
cn = CERT_GetCommonName(&cert->subject);
if (cn) {
PRBool isIPaddr = cert_IsIPAddr(hn);
if (isIPaddr) {
if (PORT_Strcasecmp(hn, cn) == 0) {
rv = SECSuccess;
} else {
PORT_SetError(SSL_ERROR_BAD_CERT_DOMAIN);
rv = SECFailure;
}
} else {
rv = cert_TestHostName(cn, hn);
}
PORT_Free(cn);
} else
PORT_SetError(SSL_ERROR_BAD_CERT_DOMAIN);
return rv;
}
PRBool
CERT_CompareCerts(const CERTCertificate *c1, const CERTCertificate *c2)
{
SECComparison comp;
comp = SECITEM_CompareItem(&c1->derCert, &c2->derCert);
if (comp == SECEqual) { /* certs are the same */
return (PR_TRUE);
} else {
return (PR_FALSE);
}
}
static SECStatus
StringsEqual(char *s1, char *s2)
{
if ((s1 == NULL) || (s2 == NULL)) {
if (s1 != s2) { /* only one is null */
return (SECFailure);
}
return (SECSuccess); /* both are null */
}
if (PORT_Strcmp(s1, s2) != 0) {
return (SECFailure); /* not equal */
}
return (SECSuccess); /* strings are equal */
}
PRBool
CERT_CompareCertsForRedirection(CERTCertificate *c1, CERTCertificate *c2)
{
SECComparison comp;
char *c1str, *c2str;
SECStatus eq;
comp = SECITEM_CompareItem(&c1->derCert, &c2->derCert);
if (comp == SECEqual) { /* certs are the same */
return (PR_TRUE);
}
/* check if they are issued by the same CA */
comp = SECITEM_CompareItem(&c1->derIssuer, &c2->derIssuer);
if (comp != SECEqual) { /* different issuer */
return (PR_FALSE);
}
/* check country name */
c1str = CERT_GetCountryName(&c1->subject);
c2str = CERT_GetCountryName(&c2->subject);
eq = StringsEqual(c1str, c2str);
PORT_Free(c1str);
PORT_Free(c2str);
if (eq != SECSuccess) {
return (PR_FALSE);
}
/* check locality name */
c1str = CERT_GetLocalityName(&c1->subject);
c2str = CERT_GetLocalityName(&c2->subject);
eq = StringsEqual(c1str, c2str);
PORT_Free(c1str);
PORT_Free(c2str);
if (eq != SECSuccess) {
return (PR_FALSE);
}
/* check state name */
c1str = CERT_GetStateName(&c1->subject);
c2str = CERT_GetStateName(&c2->subject);
eq = StringsEqual(c1str, c2str);
PORT_Free(c1str);
PORT_Free(c2str);
if (eq != SECSuccess) {
return (PR_FALSE);
}
/* check org name */
c1str = CERT_GetOrgName(&c1->subject);
c2str = CERT_GetOrgName(&c2->subject);
eq = StringsEqual(c1str, c2str);
PORT_Free(c1str);
PORT_Free(c2str);
if (eq != SECSuccess) {
return (PR_FALSE);
}
#ifdef NOTDEF
/* check orgUnit name */
/*
* We need to revisit this and decide which fields should be allowed to be
* different
*/
c1str = CERT_GetOrgUnitName(&c1->subject);
c2str = CERT_GetOrgUnitName(&c2->subject);
eq = StringsEqual(c1str, c2str);
PORT_Free(c1str);
PORT_Free(c2str);
if (eq != SECSuccess) {
return (PR_FALSE);
}
#endif
return (PR_TRUE); /* all fields but common name are the same */
}
/* CERT_CertChainFromCert and CERT_DestroyCertificateList moved
to certhigh.c */
CERTIssuerAndSN *
CERT_GetCertIssuerAndSN(PLArenaPool *arena, CERTCertificate *cert)
{
CERTIssuerAndSN *result;
SECStatus rv;
if (arena == NULL) {
arena = cert->arena;
}
result = (CERTIssuerAndSN *)PORT_ArenaZAlloc(arena, sizeof(*result));
if (result == NULL) {
PORT_SetError(SEC_ERROR_NO_MEMORY);
return NULL;
}
rv = SECITEM_CopyItem(arena, &result->derIssuer, &cert->derIssuer);
if (rv != SECSuccess)
return NULL;
rv = CERT_CopyName(arena, &result->issuer, &cert->issuer);
if (rv != SECSuccess)
return NULL;
rv = SECITEM_CopyItem(arena, &result->serialNumber, &cert->serialNumber);
if (rv != SECSuccess)
return NULL;
return result;
}
char *
CERT_MakeCANickname(CERTCertificate *cert)
{
char *firstname = NULL;
char *org = NULL;
char *nickname = NULL;
int count;
CERTCertificate *dummycert;
firstname = CERT_GetCommonName(&cert->subject);
if (firstname == NULL) {
firstname = CERT_GetOrgUnitName(&cert->subject);
}
org = CERT_GetOrgName(&cert->issuer);
if (org == NULL) {
org = CERT_GetDomainComponentName(&cert->issuer);
if (org == NULL) {
if (firstname) {
org = firstname;
firstname = NULL;
} else {
org = PORT_Strdup("Unknown CA");
}
}
}
/* can only fail if PORT_Strdup fails, in which case
* we're having memory problems. */
if (org == NULL) {
goto done;
}
count = 1;
while (1) {
if (firstname) {
if (count == 1) {
nickname = PR_smprintf("%s - %s", firstname, org);
} else {
nickname = PR_smprintf("%s - %s #%d", firstname, org, count);
}
} else {
if (count == 1) {
nickname = PR_smprintf("%s", org);
} else {
nickname = PR_smprintf("%s #%d", org, count);
}
}
if (nickname == NULL) {
goto done;
}
/* look up the nickname to make sure it isn't in use already */
dummycert = CERT_FindCertByNickname(cert->dbhandle, nickname);
if (dummycert == NULL) {
goto done;
}
/* found a cert, destroy it and loop */
CERT_DestroyCertificate(dummycert);
/* free the nickname */
PORT_Free(nickname);
count++;
}
done:
if (firstname) {
PORT_Free(firstname);
}
if (org) {
PORT_Free(org);
}
return (nickname);
}
/* CERT_Import_CAChain moved to certhigh.c */
void
CERT_DestroyCrl(CERTSignedCrl *crl)
{
SEC_DestroyCrl(crl);
}
static int
cert_Version(CERTCertificate *cert)
{
int version = 0;
if (cert && cert->version.data && cert->version.len) {
version = DER_GetInteger(&cert->version);
if (version < 0)
version = 0;
}
return version;
}
static unsigned int
cert_ComputeTrustOverrides(CERTCertificate *cert, unsigned int cType)
{
CERTCertTrust trust;
SECStatus rv = SECFailure;
rv = CERT_GetCertTrust(cert, &trust);
if (rv == SECSuccess &&
(trust.sslFlags | trust.emailFlags | trust.objectSigningFlags)) {
if (trust.sslFlags & (CERTDB_TERMINAL_RECORD | CERTDB_TRUSTED))
cType |= NS_CERT_TYPE_SSL_SERVER | NS_CERT_TYPE_SSL_CLIENT;
if (trust.sslFlags & (CERTDB_VALID_CA | CERTDB_TRUSTED_CA))
cType |= NS_CERT_TYPE_SSL_CA;
#if defined(CERTDB_NOT_TRUSTED)
if (trust.sslFlags & CERTDB_NOT_TRUSTED)
cType &= ~(NS_CERT_TYPE_SSL_SERVER | NS_CERT_TYPE_SSL_CLIENT |
NS_CERT_TYPE_SSL_CA);
#endif
if (trust.emailFlags & (CERTDB_TERMINAL_RECORD | CERTDB_TRUSTED))
cType |= NS_CERT_TYPE_EMAIL;
if (trust.emailFlags & (CERTDB_VALID_CA | CERTDB_TRUSTED_CA))
cType |= NS_CERT_TYPE_EMAIL_CA;
#if defined(CERTDB_NOT_TRUSTED)
if (trust.emailFlags & CERTDB_NOT_TRUSTED)
cType &= ~(NS_CERT_TYPE_EMAIL | NS_CERT_TYPE_EMAIL_CA);
#endif
if (trust.objectSigningFlags &
(CERTDB_TERMINAL_RECORD | CERTDB_TRUSTED))
cType |= NS_CERT_TYPE_OBJECT_SIGNING;
if (trust.objectSigningFlags & (CERTDB_VALID_CA | CERTDB_TRUSTED_CA))
cType |= NS_CERT_TYPE_OBJECT_SIGNING_CA;
#if defined(CERTDB_NOT_TRUSTED)
if (trust.objectSigningFlags & CERTDB_NOT_TRUSTED)
cType &=
~(NS_CERT_TYPE_OBJECT_SIGNING | NS_CERT_TYPE_OBJECT_SIGNING_CA);
#endif
}
return cType;
}
/*
* Does a cert belong to a CA? We decide based on perm database trust
* flags, Netscape Cert Type Extension, and KeyUsage Extension.
*/
PRBool
CERT_IsCACert(CERTCertificate *cert, unsigned int *rettype)
{
unsigned int cType = cert->nsCertType;
PRBool ret = PR_FALSE;
/*
* Check if the constraints are available and it's a CA, OR if it's
* a X.509 v1 Root CA.
*/
CERTBasicConstraints constraints;
if ((CERT_FindBasicConstraintExten(cert, &constraints) == SECSuccess &&
constraints.isCA) ||
(cert->isRoot && cert_Version(cert) < SEC_CERTIFICATE_VERSION_3))
cType |= (NS_CERT_TYPE_SSL_CA | NS_CERT_TYPE_EMAIL_CA);
/*
* Apply trust overrides, if any.
*/
cType = cert_ComputeTrustOverrides(cert, cType);
ret = (cType & (NS_CERT_TYPE_SSL_CA | NS_CERT_TYPE_EMAIL_CA |
NS_CERT_TYPE_OBJECT_SIGNING_CA))
? PR_TRUE
: PR_FALSE;
if (rettype) {
*rettype = cType;
}
return ret;
}
PRBool
CERT_IsCADERCert(SECItem *derCert, unsigned int *type)
{
CERTCertificate *cert;
PRBool isCA;
/* This is okay -- only looks at extensions */
cert = CERT_DecodeDERCertificate(derCert, PR_FALSE, NULL);
if (cert == NULL)
return PR_FALSE;
isCA = CERT_IsCACert(cert, type);
CERT_DestroyCertificate(cert);
return isCA;
}
PRBool
CERT_IsRootDERCert(SECItem *derCert)
{
CERTCertificate *cert;
PRBool isRoot;
/* This is okay -- only looks at extensions */
cert = CERT_DecodeDERCertificate(derCert, PR_FALSE, NULL);
if (cert == NULL)
return PR_FALSE;
isRoot = cert->isRoot;
CERT_DestroyCertificate(cert);
return isRoot;
}
CERTCompareValidityStatus
CERT_CompareValidityTimes(CERTValidity *val_a, CERTValidity *val_b)
{
PRTime notBeforeA, notBeforeB, notAfterA, notAfterB;
if (!val_a || !val_b) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return certValidityUndetermined;
}
if (SECSuccess != DER_DecodeTimeChoice(&notBeforeA, &val_a->notBefore) ||
SECSuccess != DER_DecodeTimeChoice(&notBeforeB, &val_b->notBefore) ||
SECSuccess != DER_DecodeTimeChoice(&notAfterA, &val_a->notAfter) ||
SECSuccess != DER_DecodeTimeChoice(&notAfterB, &val_b->notAfter)) {
return certValidityUndetermined;
}
/* sanity check */
if (LL_CMP(notBeforeA, >, notAfterA) || LL_CMP(notBeforeB, >, notAfterB)) {
PORT_SetError(SEC_ERROR_INVALID_TIME);
return certValidityUndetermined;
}
if (LL_CMP(notAfterA, !=, notAfterB)) {
/* one cert validity goes farther into the future, select it */
return LL_CMP(notAfterA, <, notAfterB) ? certValidityChooseB
: certValidityChooseA;
}
/* the two certs have the same expiration date */
PORT_Assert(LL_CMP(notAfterA, ==, notAfterB));
/* do they also have the same start date ? */
if (LL_CMP(notBeforeA, ==, notBeforeB)) {
return certValidityEqual;
}
/* choose cert with the later start date */
return LL_CMP(notBeforeA, <, notBeforeB) ? certValidityChooseB
: certValidityChooseA;
}
/*
* is certa newer than certb? If one is expired, pick the other one.
*/
PRBool
CERT_IsNewer(CERTCertificate *certa, CERTCertificate *certb)
{
PRTime notBeforeA, notAfterA, notBeforeB, notAfterB, now;
SECStatus rv;
PRBool newerbefore, newerafter;
rv = CERT_GetCertTimes(certa, &notBeforeA, &notAfterA);
if (rv != SECSuccess) {
return (PR_FALSE);
}
rv = CERT_GetCertTimes(certb, &notBeforeB, &notAfterB);
if (rv != SECSuccess) {
return (PR_TRUE);
}
newerbefore = PR_FALSE;
if (LL_CMP(notBeforeA, >, notBeforeB)) {
newerbefore = PR_TRUE;
}
newerafter = PR_FALSE;
if (LL_CMP(notAfterA, >, notAfterB)) {
newerafter = PR_TRUE;
}
if (newerbefore && newerafter) {
return (PR_TRUE);
}
if ((!newerbefore) && (!newerafter)) {
return (PR_FALSE);
}
/* get current time */
now = PR_Now();
if (newerbefore) {
/* cert A was issued after cert B, but expires sooner */
/* if A is expired, then pick B */
if (LL_CMP(notAfterA, <, now)) {
return (PR_FALSE);
}
return (PR_TRUE);
} else {
/* cert B was issued after cert A, but expires sooner */
/* if B is expired, then pick A */
if (LL_CMP(notAfterB, <, now)) {
return (PR_TRUE);
}
return (PR_FALSE);
}
}
void
CERT_DestroyCertArray(CERTCertificate **certs, unsigned int ncerts)
{
unsigned int i;
if (certs) {
for (i = 0; i < ncerts; i++) {
if (certs[i]) {
CERT_DestroyCertificate(certs[i]);
}
}
PORT_Free(certs);
}
return;
}
char *
CERT_FixupEmailAddr(const char *emailAddr)
{
char *retaddr;
char *str;
if (emailAddr == NULL) {
return (NULL);
}
/* copy the string */
str = retaddr = PORT_Strdup(emailAddr);
if (str == NULL) {
return (NULL);
}
/* make it lower case */
while (*str) {
*str = tolower(*str);
str++;
}
return (retaddr);
}
/*
* NOTE - don't allow encode of govt-approved or invisible bits
*/
SECStatus
CERT_DecodeTrustString(CERTCertTrust *trust, const char *trusts)
{
unsigned int i;
unsigned int *pflags;
if (!trust) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return SECFailure;
}
trust->sslFlags = 0;
trust->emailFlags = 0;
trust->objectSigningFlags = 0;
if (!trusts) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return SECFailure;
}
pflags = &trust->sslFlags;
for (i = 0; i < PORT_Strlen(trusts); i++) {
switch (trusts[i]) {
case 'p':
*pflags = *pflags | CERTDB_TERMINAL_RECORD;
break;
case 'P':
*pflags = *pflags | CERTDB_TRUSTED | CERTDB_TERMINAL_RECORD;
break;
case 'w':
*pflags = *pflags | CERTDB_SEND_WARN;
break;
case 'c':
*pflags = *pflags | CERTDB_VALID_CA;
break;
case 'T':
*pflags = *pflags | CERTDB_TRUSTED_CLIENT_CA | CERTDB_VALID_CA;
break;
case 'C':
*pflags = *pflags | CERTDB_TRUSTED_CA | CERTDB_VALID_CA;
break;
case 'u':
*pflags = *pflags | CERTDB_USER;
break;
case 'i':
*pflags = *pflags | CERTDB_INVISIBLE_CA;
break;
case 'g':
*pflags = *pflags | CERTDB_GOVT_APPROVED_CA;
break;
case ',':
if (pflags == &trust->sslFlags) {
pflags = &trust->emailFlags;
} else {
pflags = &trust->objectSigningFlags;
}
break;
default:
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return SECFailure;
}
}
return SECSuccess;
}
static void
EncodeFlags(char *trusts, unsigned int flags)
{
if (flags & CERTDB_VALID_CA)
if (!(flags & CERTDB_TRUSTED_CA) && !(flags & CERTDB_TRUSTED_CLIENT_CA))
PORT_Strcat(trusts, "c");
if (flags & CERTDB_TERMINAL_RECORD)
if (!(flags & CERTDB_TRUSTED))
PORT_Strcat(trusts, "p");
if (flags & CERTDB_TRUSTED_CA)
PORT_Strcat(trusts, "C");
if (flags & CERTDB_TRUSTED_CLIENT_CA)
PORT_Strcat(trusts, "T");
if (flags & CERTDB_TRUSTED)
PORT_Strcat(trusts, "P");
if (flags & CERTDB_USER)
PORT_Strcat(trusts, "u");
if (flags & CERTDB_SEND_WARN)
PORT_Strcat(trusts, "w");
if (flags & CERTDB_INVISIBLE_CA)
PORT_Strcat(trusts, "I");
if (flags & CERTDB_GOVT_APPROVED_CA)
PORT_Strcat(trusts, "G");
return;
}
char *
CERT_EncodeTrustString(CERTCertTrust *trust)
{
char tmpTrustSSL[32];
char tmpTrustEmail[32];
char tmpTrustSigning[32];
char *retstr = NULL;
if (trust) {
tmpTrustSSL[0] = '\0';
tmpTrustEmail[0] = '\0';
tmpTrustSigning[0] = '\0';
EncodeFlags(tmpTrustSSL, trust->sslFlags);
EncodeFlags(tmpTrustEmail, trust->emailFlags);
EncodeFlags(tmpTrustSigning, trust->objectSigningFlags);
retstr = PR_smprintf("%s,%s,%s", tmpTrustSSL, tmpTrustEmail,
tmpTrustSigning);
}
return (retstr);
}
SECStatus
CERT_ImportCerts(CERTCertDBHandle *certdb, SECCertUsage usage,
unsigned int ncerts, SECItem **derCerts,
CERTCertificate ***retCerts, PRBool keepCerts, PRBool caOnly,
char *nickname)
{
unsigned int i;
CERTCertificate **certs = NULL;
unsigned int fcerts = 0;
if (ncerts) {
certs = PORT_ZNewArray(CERTCertificate *, ncerts);
if (certs == NULL) {
return (SECFailure);
}
/* decode all of the certs into the temporary DB */
for (i = 0, fcerts = 0; i < ncerts; i++) {
certs[fcerts] = CERT_NewTempCertificate(certdb, derCerts[i], NULL,
PR_FALSE, PR_TRUE);
if (certs[fcerts]) {
SECItem subjKeyID = { siBuffer, NULL, 0 };
if (CERT_FindSubjectKeyIDExtension(certs[fcerts], &subjKeyID) ==
SECSuccess) {
if (subjKeyID.data) {
cert_AddSubjectKeyIDMapping(&subjKeyID, certs[fcerts]);
}
SECITEM_FreeItem(&subjKeyID, PR_FALSE);
}
fcerts++;
}
}
if (keepCerts) {
for (i = 0; i < fcerts; i++) {
char *canickname = NULL;
PRBool isCA;
SECKEY_UpdateCertPQG(certs[i]);
isCA = CERT_IsCACert(certs[i], NULL);
if (isCA) {
canickname = CERT_MakeCANickname(certs[i]);
}
if (isCA && (fcerts > 1)) {
/* if we are importing only a single cert and specifying
* a nickname, we want to use that nickname if it a CA,
* otherwise if there are more than one cert, we don't
* know which cert it belongs to. But we still may try
* the individual canickname from the cert itself.
*/
/* Bug 1192442 - propagate errors from these calls. */
(void)CERT_AddTempCertToPerm(certs[i], canickname, NULL);
} else {
(void)CERT_AddTempCertToPerm(
certs[i], nickname ? nickname : canickname, NULL);
}
PORT_Free(canickname);
/* don't care if it fails - keep going */
}
}
}
if (retCerts) {
*retCerts = certs;
} else {
if (certs) {
CERT_DestroyCertArray(certs, fcerts);
}
}
return (fcerts || !ncerts) ? SECSuccess : SECFailure;
}
/*
* a real list of certificates - need to convert CERTCertificateList
* stuff and ASN 1 encoder/decoder over to using this...
*/
CERTCertList *
CERT_NewCertList(void)
{
PLArenaPool *arena = NULL;
CERTCertList *ret = NULL;
arena = PORT_NewArena(DER_DEFAULT_CHUNKSIZE);
if (arena == NULL) {
goto loser;
}
ret = (CERTCertList *)PORT_ArenaZAlloc(arena, sizeof(CERTCertList));
if (ret == NULL) {
goto loser;
}
ret->arena = arena;
PR_INIT_CLIST(&ret->list);
return (ret);
loser:
if (arena != NULL) {
PORT_FreeArena(arena, PR_FALSE);
}
return (NULL);
}
void
CERT_DestroyCertList(CERTCertList *certs)
{
PRCList *node;
if (!certs) {
return;
}
while (!PR_CLIST_IS_EMPTY(&certs->list)) {
node = PR_LIST_HEAD(&certs->list);
CERT_DestroyCertificate(((CERTCertListNode *)node)->cert);
PR_REMOVE_LINK(node);
}
PORT_FreeArena(certs->arena, PR_FALSE);
return;
}
void
CERT_RemoveCertListNode(CERTCertListNode *node)
{
CERT_DestroyCertificate(node->cert);
PR_REMOVE_LINK(&node->links);
return;
}
SECStatus
CERT_AddCertToListTailWithData(CERTCertList *certs, CERTCertificate *cert,
void *appData)
{
CERTCertListNode *node;
node = (CERTCertListNode *)PORT_ArenaZAlloc(certs->arena,
sizeof(CERTCertListNode));
if (node == NULL) {
goto loser;
}
PR_INSERT_BEFORE(&node->links, &certs->list);
/* certs->count++; */
node->cert = cert;
node->appData = appData;
return (SECSuccess);
loser:
return (SECFailure);
}
SECStatus
CERT_AddCertToListTail(CERTCertList *certs, CERTCertificate *cert)
{
return CERT_AddCertToListTailWithData(certs, cert, NULL);
}
SECStatus
CERT_AddCertToListHeadWithData(CERTCertList *certs, CERTCertificate *cert,
void *appData)
{
CERTCertListNode *node;
CERTCertListNode *head;
head = CERT_LIST_HEAD(certs);
if (head == NULL) {
goto loser;
}
node = (CERTCertListNode *)PORT_ArenaZAlloc(certs->arena,
sizeof(CERTCertListNode));
if (node == NULL) {
goto loser;
}
PR_INSERT_BEFORE(&node->links, &head->links);
/* certs->count++; */
node->cert = cert;
node->appData = appData;
return (SECSuccess);
loser:
return (SECFailure);
}
SECStatus
CERT_AddCertToListHead(CERTCertList *certs, CERTCertificate *cert)
{
return CERT_AddCertToListHeadWithData(certs, cert, NULL);
}
/*
* Sort callback function to determine if cert a is newer than cert b.
* Not valid certs are considered older than valid certs.
*/
PRBool
CERT_SortCBValidity(CERTCertificate *certa, CERTCertificate *certb, void *arg)
{
PRTime sorttime;
PRTime notBeforeA, notAfterA, notBeforeB, notAfterB;
SECStatus rv;
PRBool newerbefore, newerafter;
PRBool aNotValid = PR_FALSE, bNotValid = PR_FALSE;
sorttime = *(PRTime *)arg;
rv = CERT_GetCertTimes(certa, &notBeforeA, &notAfterA);
if (rv != SECSuccess) {
return (PR_FALSE);
}
rv = CERT_GetCertTimes(certb, &notBeforeB, &notAfterB);
if (rv != SECSuccess) {
return (PR_TRUE);
}
newerbefore = PR_FALSE;
if (LL_CMP(notBeforeA, >, notBeforeB)) {
newerbefore = PR_TRUE;
}
newerafter = PR_FALSE;
if (LL_CMP(notAfterA, >, notAfterB)) {
newerafter = PR_TRUE;
}
/* check if A is valid at sorttime */
if (CERT_CheckCertValidTimes(certa, sorttime, PR_FALSE) !=
secCertTimeValid) {
aNotValid = PR_TRUE;
}
/* check if B is valid at sorttime */
if (CERT_CheckCertValidTimes(certb, sorttime, PR_FALSE) !=
secCertTimeValid) {
bNotValid = PR_TRUE;
}
/* a is valid, b is not */
if (bNotValid && (!aNotValid)) {
return (PR_TRUE);
}
/* b is valid, a is not */
if (aNotValid && (!bNotValid)) {
return (PR_FALSE);
}
/* a and b are either valid or not valid */
if (newerbefore && newerafter) {
return (PR_TRUE);
}
if ((!newerbefore) && (!newerafter)) {
return (PR_FALSE);
}
if (newerbefore) {
/* cert A was issued after cert B, but expires sooner */
return (PR_TRUE);
} else {
/* cert B was issued after cert A, but expires sooner */
return (PR_FALSE);
}
}
SECStatus
CERT_AddCertToListSorted(CERTCertList *certs, CERTCertificate *cert,
CERTSortCallback f, void *arg)
{
CERTCertListNode *node;
CERTCertListNode *head;
PRBool ret;
node = (CERTCertListNode *)PORT_ArenaZAlloc(certs->arena,
sizeof(CERTCertListNode));
if (node == NULL) {
goto loser;
}
head = CERT_LIST_HEAD(certs);
while (!CERT_LIST_END(head, certs)) {
/* if cert is already in the list, then don't add it again */
if (cert == head->cert) {
/*XXX*/
/* don't keep a reference */
CERT_DestroyCertificate(cert);
goto done;
}
ret = (*f)(cert, head->cert, arg);
/* if sort function succeeds, then insert before current node */
if (ret) {
PR_INSERT_BEFORE(&node->links, &head->links);
goto done;
}
head = CERT_LIST_NEXT(head);
}
/* if we get to the end, then just insert it at the tail */
PR_INSERT_BEFORE(&node->links, &certs->list);
done:
/* certs->count++; */
node->cert = cert;
return (SECSuccess);
loser:
return (SECFailure);
}
/* This routine is here because pcertdb.c still has a call to it.
* The SMIME profile code in pcertdb.c should be split into high (find
* the email cert) and low (store the profile) code. At that point, we
* can move this to certhigh.c where it belongs.
*
* remove certs from a list that don't have keyUsage and certType
* that match the given usage.
*/
SECStatus
CERT_FilterCertListByUsage(CERTCertList *certList, SECCertUsage usage,
PRBool ca)
{
unsigned int requiredKeyUsage;
unsigned int requiredCertType;
CERTCertListNode *node, *savenode;
SECStatus rv;
if (certList == NULL)
goto loser;
rv = CERT_KeyUsageAndTypeForCertUsage(usage, ca, &requiredKeyUsage,
&requiredCertType);
if (rv != SECSuccess) {
goto loser;
}
node = CERT_LIST_HEAD(certList);
while (!CERT_LIST_END(node, certList)) {
PRBool bad = (PRBool)(!node->cert);
/* bad key usage ? */
if (!bad &&
CERT_CheckKeyUsage(node->cert, requiredKeyUsage) != SECSuccess) {
bad = PR_TRUE;
}
/* bad cert type ? */
if (!bad) {
unsigned int certType = 0;
if (ca) {
/* This function returns a more comprehensive cert type that
* takes trust flags into consideration. Should probably
* fix the cert decoding code to do this.
*/
(void)CERT_IsCACert(node->cert, &certType);
} else {
certType = node->cert->nsCertType;
}
if (!(certType & requiredCertType)) {
bad = PR_TRUE;
}
}
if (bad) {
/* remove the node if it is bad */
savenode = CERT_LIST_NEXT(node);
CERT_RemoveCertListNode(node);
node = savenode;
} else {
node = CERT_LIST_NEXT(node);
}
}
return (SECSuccess);
loser:
return (SECFailure);
}
PRBool
CERT_IsUserCert(CERTCertificate *cert)
{
CERTCertTrust trust;
SECStatus rv = SECFailure;
rv = CERT_GetCertTrust(cert, &trust);
if (rv == SECSuccess &&
((trust.sslFlags & CERTDB_USER) || (trust.emailFlags & CERTDB_USER) ||
(trust.objectSigningFlags & CERTDB_USER))) {
return PR_TRUE;
} else {
return PR_FALSE;
}
}
SECStatus
CERT_FilterCertListForUserCerts(CERTCertList *certList)
{
CERTCertListNode *node, *freenode;
CERTCertificate *cert;
if (!certList) {
return SECFailure;
}
node = CERT_LIST_HEAD(certList);
while (!CERT_LIST_END(node, certList)) {
cert = node->cert;
if (PR_TRUE != CERT_IsUserCert(cert)) {
/* Not a User Cert, so remove this cert from the list */
freenode = node;
node = CERT_LIST_NEXT(node);
CERT_RemoveCertListNode(freenode);
} else {
/* Is a User cert, so leave it in the list */
node = CERT_LIST_NEXT(node);
}
}
return (SECSuccess);
}
/* return true if cert is in the list */
PRBool
CERT_IsInList(const CERTCertificate *cert, const CERTCertList *certList)
{
CERTCertListNode *node;
for (node = CERT_LIST_HEAD(certList); !CERT_LIST_END(node, certList);
node = CERT_LIST_NEXT(node)) {
if (node->cert == cert) {
return PR_TRUE;
}
}
return PR_FALSE;
}
/* returned certList is the intersection of the certs on certList and the
* certs on filterList */
SECStatus
CERT_FilterCertListByCertList(CERTCertList *certList,
const CERTCertList *filterList)
{
CERTCertListNode *node, *freenode;
CERTCertificate *cert;
if (!certList) {
return SECFailure;
}
if (!filterList || CERT_LIST_EMPTY(certList)) {
/* if the filterList is empty, just clear out certList and return */
for (node = CERT_LIST_HEAD(certList); !CERT_LIST_END(node, certList);) {
freenode = node;
node = CERT_LIST_NEXT(node);
CERT_RemoveCertListNode(freenode);
}
return SECSuccess;
}
node = CERT_LIST_HEAD(certList);
while (!CERT_LIST_END(node, certList)) {
cert = node->cert;
if (!CERT_IsInList(cert, filterList)) {
// no matching cert on filter list, remove it from certlist */
freenode = node;
node = CERT_LIST_NEXT(node);
CERT_RemoveCertListNode(freenode);
} else {
/* matching cert, keep it around */
node = CERT_LIST_NEXT(node);
}
}
return (SECSuccess);
}
SECStatus
CERT_FilterCertListByNickname(CERTCertList *certList, char *nickname,
void *pwarg)
{
CERTCertList *nameList;
SECStatus rv;
if (!certList) {
return SECFailure;
}
/* we could try to match the nickname to the individual cert,
* but nickname parsing is quite complicated, so it's best just
* to use the existing code and get a list of certs that match the
* nickname. We can then compare that list with our input cert list
* and return only those certs that are on both. */
nameList = PK11_FindCertsFromNickname(nickname, pwarg);
/* namelist could be NULL, this will force certList to become empty */
rv = CERT_FilterCertListByCertList(certList, nameList);
/* CERT_DestroyCertList can now accept a NULL pointer */
CERT_DestroyCertList(nameList);
return rv;
}
static PZLock *certRefCountLock = NULL;
/*
* Acquire the cert reference count lock
* There is currently one global lock for all certs, but I'm putting a cert
* arg here so that it will be easy to make it per-cert in the future if
* that turns out to be necessary.
*/
void
CERT_LockCertRefCount(CERTCertificate *cert)
{
PORT_Assert(certRefCountLock != NULL);
PZ_Lock(certRefCountLock);
return;
}
/*
* Free the cert reference count lock
*/
void
CERT_UnlockCertRefCount(CERTCertificate *cert)
{
PORT_Assert(certRefCountLock != NULL);
PRStatus prstat = PZ_Unlock(certRefCountLock);
PORT_AssertArg(prstat == PR_SUCCESS);
}
static PZLock *certTrustLock = NULL;
/*
* Acquire the cert trust lock
* There is currently one global lock for all certs, but I'm putting a cert
* arg here so that it will be easy to make it per-cert in the future if
* that turns out to be necessary.
*/
void
CERT_LockCertTrust(const CERTCertificate *cert)
{
PORT_Assert(certTrustLock != NULL);
PZ_Lock(certTrustLock);
}
static PZLock *certTempPermCertLock = NULL;
/*
* Acquire the cert temp/perm/nssCert lock
*/
void
CERT_LockCertTempPerm(const CERTCertificate *cert)
{
PORT_Assert(certTempPermCertLock != NULL);
PZ_Lock(certTempPermCertLock);
}
/* Maybe[Lock, Unlock] variants are only to be used by
* CERT_DestroyCertificate, since an application could
* call this after NSS_Shutdown destroys cert locks. */
void
CERT_MaybeLockCertTempPerm(const CERTCertificate *cert)
{
if (certTempPermCertLock) {
PZ_Lock(certTempPermCertLock);
}
}
SECStatus
cert_InitLocks(void)
{
if (certRefCountLock == NULL) {
certRefCountLock = PZ_NewLock(nssILockRefLock);
PORT_Assert(certRefCountLock != NULL);
if (!certRefCountLock) {
return SECFailure;
}
}
if (certTrustLock == NULL) {
certTrustLock = PZ_NewLock(nssILockCertDB);
PORT_Assert(certTrustLock != NULL);
if (!certTrustLock) {
PZ_DestroyLock(certRefCountLock);
certRefCountLock = NULL;
return SECFailure;
}
}
if (certTempPermCertLock == NULL) {
certTempPermCertLock = PZ_NewLock(nssILockCertDB);
PORT_Assert(certTempPermCertLock != NULL);
if (!certTempPermCertLock) {
PZ_DestroyLock(certTrustLock);
PZ_DestroyLock(certRefCountLock);
certRefCountLock = NULL;
certTrustLock = NULL;
return SECFailure;
}
}
return SECSuccess;
}
SECStatus
cert_DestroyLocks(void)
{
SECStatus rv = SECSuccess;
PORT_Assert(certRefCountLock != NULL);
if (certRefCountLock) {
PZ_DestroyLock(certRefCountLock);
certRefCountLock = NULL;
} else {
rv = SECFailure;
}
PORT_Assert(certTrustLock != NULL);
if (certTrustLock) {
PZ_DestroyLock(certTrustLock);
certTrustLock = NULL;
} else {
rv = SECFailure;
}
PORT_Assert(certTempPermCertLock != NULL);
if (certTempPermCertLock) {
PZ_DestroyLock(certTempPermCertLock);
certTempPermCertLock = NULL;
} else {
rv = SECFailure;
}
return rv;
}
/*
* Free the cert trust lock
*/
void
CERT_UnlockCertTrust(const CERTCertificate *cert)
{
PORT_Assert(certTrustLock != NULL);
PRStatus prstat = PZ_Unlock(certTrustLock);
PORT_AssertArg(prstat == PR_SUCCESS);
}
/*
* Free the temp/perm/nssCert lock
*/
void
CERT_UnlockCertTempPerm(const CERTCertificate *cert)
{
PORT_Assert(certTempPermCertLock != NULL);
PRStatus prstat = PZ_Unlock(certTempPermCertLock);
PORT_AssertArg(prstat == PR_SUCCESS);
}
void
CERT_MaybeUnlockCertTempPerm(const CERTCertificate *cert)
{
if (certTempPermCertLock) {
PZ_Unlock(certTempPermCertLock);
}
}
/*
* Get the StatusConfig data for this handle
*/
CERTStatusConfig *
CERT_GetStatusConfig(CERTCertDBHandle *handle)
{
return handle->statusConfig;
}
/*
* Set the StatusConfig data for this handle. There
* should not be another configuration set.
*/
void
CERT_SetStatusConfig(CERTCertDBHandle *handle, CERTStatusConfig *statusConfig)
{
PORT_Assert(handle->statusConfig == NULL);
handle->statusConfig = statusConfig;
}
/*
* Code for dealing with subjKeyID to cert mappings.
*/
static PLHashTable *gSubjKeyIDHash = NULL;
static PRLock *gSubjKeyIDLock = NULL;
static PLHashTable *gSubjKeyIDSlotCheckHash = NULL;
static PRLock *gSubjKeyIDSlotCheckLock = NULL;
static void *
cert_AllocTable(void *pool, PRSize size)
{
return PORT_Alloc(size);
}
static void
cert_FreeTable(void *pool, void *item)
{
PORT_Free(item);
}
static PLHashEntry *
cert_AllocEntry(void *pool, const void *key)
{
return PORT_New(PLHashEntry);
}
static void
cert_FreeEntry(void *pool, PLHashEntry *he, PRUintn flag)
{
SECITEM_FreeItem((SECItem *)(he->value), PR_TRUE);
if (flag == HT_FREE_ENTRY) {
SECITEM_FreeItem((SECItem *)(he->key), PR_TRUE);
PORT_Free(he);
}
}
static PLHashAllocOps cert_AllocOps = { cert_AllocTable, cert_FreeTable,
cert_AllocEntry, cert_FreeEntry };
SECStatus
cert_CreateSubjectKeyIDSlotCheckHash(void)
{
/*
* This hash is used to remember the series of a slot
* when we last checked for user certs
*/
gSubjKeyIDSlotCheckHash =
PL_NewHashTable(0, SECITEM_Hash, SECITEM_HashCompare,
SECITEM_HashCompare, &cert_AllocOps, NULL);
if (!gSubjKeyIDSlotCheckHash) {
PORT_SetError(SEC_ERROR_NO_MEMORY);
return SECFailure;
}
gSubjKeyIDSlotCheckLock = PR_NewLock();
if (!gSubjKeyIDSlotCheckLock) {
PL_HashTableDestroy(gSubjKeyIDSlotCheckHash);
gSubjKeyIDSlotCheckHash = NULL;
PORT_SetError(SEC_ERROR_NO_MEMORY);
return SECFailure;
}
return SECSuccess;
}
SECStatus
cert_CreateSubjectKeyIDHashTable(void)
{
gSubjKeyIDHash = PL_NewHashTable(0, SECITEM_Hash, SECITEM_HashCompare,
SECITEM_HashCompare, &cert_AllocOps, NULL);
if (!gSubjKeyIDHash) {
PORT_SetError(SEC_ERROR_NO_MEMORY);
return SECFailure;
}
gSubjKeyIDLock = PR_NewLock();
if (!gSubjKeyIDLock) {
PL_HashTableDestroy(gSubjKeyIDHash);
gSubjKeyIDHash = NULL;
PORT_SetError(SEC_ERROR_NO_MEMORY);
return SECFailure;
}
/* initialize the companion hash (for remembering slot series) */
if (cert_CreateSubjectKeyIDSlotCheckHash() != SECSuccess) {
cert_DestroySubjectKeyIDHashTable();
return SECFailure;
}
return SECSuccess;
}
SECStatus
cert_AddSubjectKeyIDMapping(SECItem *subjKeyID, CERTCertificate *cert)
{
SECItem *newKeyID, *oldVal, *newVal;
SECStatus rv = SECFailure;
if (!gSubjKeyIDLock) {
/* If one is created, then both are there. So only check for one. */
return SECFailure;
}
newVal = SECITEM_DupItem(&cert->derCert);
if (!newVal) {
PORT_SetError(SEC_ERROR_NO_MEMORY);
goto done;
}
newKeyID = SECITEM_DupItem(subjKeyID);
if (!newKeyID) {
SECITEM_FreeItem(newVal, PR_TRUE);
PORT_SetError(SEC_ERROR_NO_MEMORY);
goto done;
}
PR_Lock(gSubjKeyIDLock);
/* The hash table implementation does not free up the memory
* associated with the key of an already existing entry if we add a
* duplicate, so we would wind up leaking the previously allocated
* key if we don't remove before adding.
*/
oldVal = (SECItem *)PL_HashTableLookup(gSubjKeyIDHash, subjKeyID);
if (oldVal) {
PL_HashTableRemove(gSubjKeyIDHash, subjKeyID);
}
rv = (PL_HashTableAdd(gSubjKeyIDHash, newKeyID, newVal)) ? SECSuccess
: SECFailure;
PR_Unlock(gSubjKeyIDLock);
done:
return rv;
}
SECStatus
cert_RemoveSubjectKeyIDMapping(SECItem *subjKeyID)
{
SECStatus rv;
if (!gSubjKeyIDLock)
return SECFailure;
PR_Lock(gSubjKeyIDLock);
rv = (PL_HashTableRemove(gSubjKeyIDHash, subjKeyID)) ? SECSuccess
: SECFailure;
PR_Unlock(gSubjKeyIDLock);
return rv;
}
SECStatus
cert_UpdateSubjectKeyIDSlotCheck(SECItem *slotid, int series)
{
SECItem *oldSeries, *newSlotid, *newSeries;
SECStatus rv = SECFailure;
if (!gSubjKeyIDSlotCheckLock) {
return rv;
}
newSlotid = SECITEM_DupItem(slotid);
newSeries = SECITEM_AllocItem(NULL, NULL, sizeof(int));
if (!newSlotid || !newSeries) {
PORT_SetError(SEC_ERROR_NO_MEMORY);
goto loser;
}
PORT_Memcpy(newSeries->data, &series, sizeof(int));
PR_Lock(gSubjKeyIDSlotCheckLock);
oldSeries = (SECItem *)PL_HashTableLookup(gSubjKeyIDSlotCheckHash, slotid);
if (oldSeries) {
/*
* make sure we don't leak the key of an existing entry
* (similar to cert_AddSubjectKeyIDMapping, see comment there)
*/
PL_HashTableRemove(gSubjKeyIDSlotCheckHash, slotid);
}
rv = (PL_HashTableAdd(gSubjKeyIDSlotCheckHash, newSlotid, newSeries))
? SECSuccess
: SECFailure;
PR_Unlock(gSubjKeyIDSlotCheckLock);
if (rv == SECSuccess) {
return rv;
}
loser:
if (newSlotid) {
SECITEM_FreeItem(newSlotid, PR_TRUE);
}
if (newSeries) {
SECITEM_FreeItem(newSeries, PR_TRUE);
}
return rv;
}
int
cert_SubjectKeyIDSlotCheckSeries(SECItem *slotid)
{
SECItem *seriesItem = NULL;
int series;
if (!gSubjKeyIDSlotCheckLock) {
PORT_SetError(SEC_ERROR_NOT_INITIALIZED);
return -1;
}
PR_Lock(gSubjKeyIDSlotCheckLock);
seriesItem = (SECItem *)PL_HashTableLookup(gSubjKeyIDSlotCheckHash, slotid);
PR_Unlock(gSubjKeyIDSlotCheckLock);
/* getting a null series just means we haven't registered one yet,
* just return 0 */
if (seriesItem == NULL) {
return 0;
}
/* if we got a series back, assert if it's not the proper length. */
PORT_Assert(seriesItem->len == sizeof(int));
if (seriesItem->len != sizeof(int)) {
PORT_SetError(SEC_ERROR_LIBRARY_FAILURE);
return -1;
}
PORT_Memcpy(&series, seriesItem->data, sizeof(int));
return series;
}
SECStatus
cert_DestroySubjectKeyIDSlotCheckHash(void)
{
if (gSubjKeyIDSlotCheckHash) {
PR_Lock(gSubjKeyIDSlotCheckLock);
PL_HashTableDestroy(gSubjKeyIDSlotCheckHash);
gSubjKeyIDSlotCheckHash = NULL;
PR_Unlock(gSubjKeyIDSlotCheckLock);
PR_DestroyLock(gSubjKeyIDSlotCheckLock);
gSubjKeyIDSlotCheckLock = NULL;
}
return SECSuccess;
}
SECStatus
cert_DestroySubjectKeyIDHashTable(void)
{
if (gSubjKeyIDHash) {
PR_Lock(gSubjKeyIDLock);
PL_HashTableDestroy(gSubjKeyIDHash);
gSubjKeyIDHash = NULL;
PR_Unlock(gSubjKeyIDLock);
PR_DestroyLock(gSubjKeyIDLock);
gSubjKeyIDLock = NULL;
}
cert_DestroySubjectKeyIDSlotCheckHash();
return SECSuccess;
}
SECItem *
cert_FindDERCertBySubjectKeyID(SECItem *subjKeyID)
{
SECItem *val;
if (!gSubjKeyIDLock)
return NULL;
PR_Lock(gSubjKeyIDLock);
val = (SECItem *)PL_HashTableLookup(gSubjKeyIDHash, subjKeyID);
if (val) {
val = SECITEM_DupItem(val);
}
PR_Unlock(gSubjKeyIDLock);
return val;
}
CERTCertificate *
CERT_FindCertBySubjectKeyID(CERTCertDBHandle *handle, SECItem *subjKeyID)
{
CERTCertificate *cert = NULL;
SECItem *derCert;
derCert = cert_FindDERCertBySubjectKeyID(subjKeyID);
if (derCert) {
cert = CERT_FindCertByDERCert(handle, derCert);
SECITEM_FreeItem(derCert, PR_TRUE);
}
return cert;
}