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Diffstat (limited to 'nss/lib/softoken/legacydb/lowcert.c')
-rw-r--r--nss/lib/softoken/legacydb/lowcert.c826
1 files changed, 826 insertions, 0 deletions
diff --git a/nss/lib/softoken/legacydb/lowcert.c b/nss/lib/softoken/legacydb/lowcert.c
new file mode 100644
index 0000000..a8191d8
--- /dev/null
+++ b/nss/lib/softoken/legacydb/lowcert.c
@@ -0,0 +1,826 @@
+/* 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 "seccomon.h"
+#include "secder.h"
+#include "nssilock.h"
+#include "lowkeyi.h"
+#include "secasn1.h"
+#include "secoid.h"
+#include "secerr.h"
+#include "pcert.h"
+
+SEC_ASN1_MKSUB(SECOID_AlgorithmIDTemplate)
+
+static const SEC_ASN1Template nsslowcert_SubjectPublicKeyInfoTemplate[] = {
+ { SEC_ASN1_SEQUENCE, 0, NULL, sizeof(NSSLOWCERTSubjectPublicKeyInfo) },
+ { SEC_ASN1_INLINE | SEC_ASN1_XTRN,
+ offsetof(NSSLOWCERTSubjectPublicKeyInfo,algorithm),
+ SEC_ASN1_SUB(SECOID_AlgorithmIDTemplate) },
+ { SEC_ASN1_BIT_STRING,
+ offsetof(NSSLOWCERTSubjectPublicKeyInfo,subjectPublicKey), },
+ { 0, }
+};
+
+static const SEC_ASN1Template nsslowcert_RSAPublicKeyTemplate[] = {
+ { SEC_ASN1_SEQUENCE, 0, NULL, sizeof(NSSLOWKEYPublicKey) },
+ { SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPublicKey,u.rsa.modulus), },
+ { SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPublicKey,u.rsa.publicExponent), },
+ { 0, }
+};
+static const SEC_ASN1Template nsslowcert_DSAPublicKeyTemplate[] = {
+ { SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPublicKey,u.dsa.publicValue), },
+ { 0, }
+};
+static const SEC_ASN1Template nsslowcert_DHPublicKeyTemplate[] = {
+ { SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPublicKey,u.dh.publicValue), },
+ { 0, }
+};
+
+/*
+ * See bugzilla bug 125359
+ * Since NSS (via PKCS#11) wants to handle big integers as unsigned ints,
+ * all of the templates above that en/decode into integers must be converted
+ * from ASN.1's signed integer type. This is done by marking either the
+ * source or destination (encoding or decoding, respectively) type as
+ * siUnsignedInteger.
+ */
+
+static void
+prepare_low_rsa_pub_key_for_asn1(NSSLOWKEYPublicKey *pubk)
+{
+ pubk->u.rsa.modulus.type = siUnsignedInteger;
+ pubk->u.rsa.publicExponent.type = siUnsignedInteger;
+}
+
+static void
+prepare_low_dsa_pub_key_for_asn1(NSSLOWKEYPublicKey *pubk)
+{
+ pubk->u.dsa.publicValue.type = siUnsignedInteger;
+ pubk->u.dsa.params.prime.type = siUnsignedInteger;
+ pubk->u.dsa.params.subPrime.type = siUnsignedInteger;
+ pubk->u.dsa.params.base.type = siUnsignedInteger;
+}
+
+static void
+prepare_low_dh_pub_key_for_asn1(NSSLOWKEYPublicKey *pubk)
+{
+ pubk->u.dh.prime.type = siUnsignedInteger;
+ pubk->u.dh.base.type = siUnsignedInteger;
+ pubk->u.dh.publicValue.type = siUnsignedInteger;
+}
+
+/*
+ * simple cert decoder to avoid the cost of asn1 engine
+ */
+static unsigned char *
+nsslowcert_dataStart(unsigned char *buf, unsigned int length,
+ unsigned int *data_length, PRBool includeTag,
+ unsigned char* rettag) {
+ unsigned char tag;
+ unsigned int used_length= 0;
+
+ /* need at least a tag and a 1 byte length */
+ if (length < 2) {
+ return NULL;
+ }
+
+ tag = buf[used_length++];
+
+ if (rettag) {
+ *rettag = tag;
+ }
+
+ /* blow out when we come to the end */
+ if (tag == 0) {
+ return NULL;
+ }
+
+ *data_length = buf[used_length++];
+
+ if (*data_length&0x80) {
+ int len_count = *data_length & 0x7f;
+
+ if (len_count+used_length > length) {
+ return NULL;
+ }
+
+ *data_length = 0;
+
+ while (len_count-- > 0) {
+ *data_length = (*data_length << 8) | buf[used_length++];
+ }
+ }
+
+ if (*data_length > (length-used_length) ) {
+ *data_length = length-used_length;
+ return NULL;
+ }
+ if (includeTag) *data_length += used_length;
+
+ return (buf + (includeTag ? 0 : used_length));
+}
+
+static void SetTimeType(SECItem* item, unsigned char tagtype)
+{
+ switch (tagtype) {
+ case SEC_ASN1_UTC_TIME:
+ item->type = siUTCTime;
+ break;
+
+ case SEC_ASN1_GENERALIZED_TIME:
+ item->type = siGeneralizedTime;
+ break;
+
+ default:
+ PORT_Assert(0);
+ break;
+ }
+}
+
+static int
+nsslowcert_GetValidityFields(unsigned char *buf,int buf_length,
+ SECItem *notBefore, SECItem *notAfter)
+{
+ unsigned char tagtype;
+ notBefore->data = nsslowcert_dataStart(buf,buf_length,
+ &notBefore->len,PR_FALSE, &tagtype);
+ if (notBefore->data == NULL) return SECFailure;
+ SetTimeType(notBefore, tagtype);
+ buf_length -= (notBefore->data-buf) + notBefore->len;
+ buf = notBefore->data + notBefore->len;
+ notAfter->data = nsslowcert_dataStart(buf,buf_length,
+ &notAfter->len,PR_FALSE, &tagtype);
+ if (notAfter->data == NULL) return SECFailure;
+ SetTimeType(notAfter, tagtype);
+ return SECSuccess;
+}
+
+static int
+nsslowcert_GetCertFields(unsigned char *cert,int cert_length,
+ SECItem *issuer, SECItem *serial, SECItem *derSN, SECItem *subject,
+ SECItem *valid, SECItem *subjkey, SECItem *extensions)
+{
+ unsigned char *buf;
+ unsigned int buf_length;
+ unsigned char *dummy;
+ unsigned int dummylen;
+
+ /* get past the signature wrap */
+ buf = nsslowcert_dataStart(cert,cert_length,&buf_length,PR_FALSE, NULL);
+ if (buf == NULL) return SECFailure;
+ /* get into the raw cert data */
+ buf = nsslowcert_dataStart(buf,buf_length,&buf_length,PR_FALSE, NULL);
+ if (buf == NULL) return SECFailure;
+ /* skip past any optional version number */
+ if ((buf[0] & 0xa0) == 0xa0) {
+ dummy = nsslowcert_dataStart(buf,buf_length,&dummylen,PR_FALSE, NULL);
+ if (dummy == NULL) return SECFailure;
+ buf_length -= (dummy-buf) + dummylen;
+ buf = dummy + dummylen;
+ }
+ /* serial number */
+ if (derSN) {
+ derSN->data=nsslowcert_dataStart(buf,buf_length,&derSN->len,PR_TRUE, NULL);
+ /* derSN->data doesn't need to be checked because if it fails so will
+ * serial->data below. The only difference between the two calls is
+ * whether or not the tags are included in the returned buffer */
+ }
+ serial->data = nsslowcert_dataStart(buf,buf_length,&serial->len,PR_FALSE, NULL);
+ if (serial->data == NULL) return SECFailure;
+ buf_length -= (serial->data-buf) + serial->len;
+ buf = serial->data + serial->len;
+ /* skip the OID */
+ dummy = nsslowcert_dataStart(buf,buf_length,&dummylen,PR_FALSE, NULL);
+ if (dummy == NULL) return SECFailure;
+ buf_length -= (dummy-buf) + dummylen;
+ buf = dummy + dummylen;
+ /* issuer */
+ issuer->data = nsslowcert_dataStart(buf,buf_length,&issuer->len,PR_TRUE, NULL);
+ if (issuer->data == NULL) return SECFailure;
+ buf_length -= (issuer->data-buf) + issuer->len;
+ buf = issuer->data + issuer->len;
+
+ /* only wanted issuer/SN */
+ if (valid == NULL) {
+ return SECSuccess;
+ }
+ /* validity */
+ valid->data = nsslowcert_dataStart(buf,buf_length,&valid->len,PR_FALSE, NULL);
+ if (valid->data == NULL) return SECFailure;
+ buf_length -= (valid->data-buf) + valid->len;
+ buf = valid->data + valid->len;
+ /*subject */
+ subject->data=nsslowcert_dataStart(buf,buf_length,&subject->len,PR_TRUE, NULL);
+ if (subject->data == NULL) return SECFailure;
+ buf_length -= (subject->data-buf) + subject->len;
+ buf = subject->data + subject->len;
+ /* subject key info */
+ subjkey->data=nsslowcert_dataStart(buf,buf_length,&subjkey->len,PR_TRUE, NULL);
+ if (subjkey->data == NULL) return SECFailure;
+ buf_length -= (subjkey->data-buf) + subjkey->len;
+ buf = subjkey->data + subjkey->len;
+
+ extensions->data = NULL;
+ extensions->len = 0;
+ while (buf_length > 0) {
+ /* EXTENSIONS */
+ if (buf[0] == 0xa3) {
+ extensions->data = nsslowcert_dataStart(buf,buf_length,
+ &extensions->len, PR_FALSE, NULL);
+ /* if the DER is bad, we should fail. Previously we accepted
+ * bad DER here and treated the extension as missin */
+ if (extensions->data == NULL ||
+ (extensions->data - buf) + extensions->len != buf_length)
+ return SECFailure;
+ buf = extensions->data;
+ buf_length = extensions->len;
+ /* now parse the SEQUENCE holding the extensions. */
+ dummy = nsslowcert_dataStart(buf,buf_length,&dummylen,PR_FALSE,NULL);
+ if (dummy == NULL ||
+ (dummy - buf) + dummylen != buf_length)
+ return SECFailure;
+ buf_length -= (dummy - buf);
+ buf = dummy;
+ /* Now parse the extensions inside this sequence */
+ }
+ dummy = nsslowcert_dataStart(buf,buf_length,&dummylen,PR_FALSE,NULL);
+ if (dummy == NULL) return SECFailure;
+ buf_length -= (dummy - buf) + dummylen;
+ buf = dummy + dummylen;
+ }
+ return SECSuccess;
+}
+
+static SECStatus
+nsslowcert_GetCertTimes(NSSLOWCERTCertificate *c, PRTime *notBefore, PRTime *notAfter)
+{
+ int rv;
+ NSSLOWCERTValidity validity;
+
+ rv = nsslowcert_GetValidityFields(c->validity.data,c->validity.len,
+ &validity.notBefore,&validity.notAfter);
+ if (rv != SECSuccess) {
+ return rv;
+ }
+
+ /* convert DER not-before time */
+ rv = DER_DecodeTimeChoice(notBefore, &validity.notBefore);
+ if (rv) {
+ return(SECFailure);
+ }
+
+ /* convert DER not-after time */
+ rv = DER_DecodeTimeChoice(notAfter, &validity.notAfter);
+ if (rv) {
+ return(SECFailure);
+ }
+
+ return(SECSuccess);
+}
+
+/*
+ * is certa newer than certb? If one is expired, pick the other one.
+ */
+PRBool
+nsslowcert_IsNewer(NSSLOWCERTCertificate *certa, NSSLOWCERTCertificate *certb)
+{
+ PRTime notBeforeA, notAfterA, notBeforeB, notAfterB, now;
+ SECStatus rv;
+ PRBool newerbefore, newerafter;
+
+ rv = nsslowcert_GetCertTimes(certa, &notBeforeA, &notAfterA);
+ if ( rv != SECSuccess ) {
+ return(PR_FALSE);
+ }
+
+ rv = nsslowcert_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);
+ }
+}
+
+#define SOFT_DEFAULT_CHUNKSIZE 2048
+
+static SECStatus
+nsslowcert_KeyFromIssuerAndSN(PLArenaPool *arena,
+ SECItem *issuer, SECItem *sn, SECItem *key)
+{
+ unsigned int len = sn->len + issuer->len;
+
+ if (!arena) {
+ PORT_SetError(SEC_ERROR_INVALID_ARGS);
+ goto loser;
+ }
+ if (len > NSS_MAX_LEGACY_DB_KEY_SIZE) {
+ PORT_SetError(SEC_ERROR_INPUT_LEN);
+ goto loser;
+ }
+ key->data = (unsigned char*)PORT_ArenaAlloc(arena, len);
+ if ( !key->data ) {
+ goto loser;
+ }
+
+ key->len = len;
+ /* 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);
+}
+
+static SECStatus
+nsslowcert_KeyFromIssuerAndSNStatic(unsigned char *space,
+ int spaceLen, SECItem *issuer, SECItem *sn, SECItem *key)
+{
+ unsigned int len = sn->len + issuer->len;
+
+ key->data = pkcs11_allocStaticData(len, space, spaceLen);
+ if ( !key->data ) {
+ goto loser;
+ }
+
+ key->len = len;
+ /* 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);
+}
+
+
+static char *
+nsslowcert_EmailName(SECItem *derDN, char *space, unsigned int len)
+{
+ unsigned char *buf;
+ unsigned int buf_length;
+
+ /* unwrap outer sequence */
+ buf=nsslowcert_dataStart(derDN->data,derDN->len,&buf_length,PR_FALSE,NULL);
+ if (buf == NULL) return NULL;
+
+ /* Walk each RDN */
+ while (buf_length > 0) {
+ unsigned char *rdn;
+ unsigned int rdn_length;
+
+ /* grab next rdn */
+ rdn=nsslowcert_dataStart(buf, buf_length, &rdn_length, PR_FALSE, NULL);
+ if (rdn == NULL) { return NULL; }
+ buf_length -= (rdn - buf) + rdn_length;
+ buf = rdn+rdn_length;
+
+ while (rdn_length > 0) {
+ unsigned char *ava;
+ unsigned int ava_length;
+ unsigned char *oid;
+ unsigned int oid_length;
+ unsigned char *name;
+ unsigned int name_length;
+ SECItem oidItem;
+ SECOidTag type;
+
+ /* unwrap the ava */
+ ava=nsslowcert_dataStart(rdn, rdn_length, &ava_length, PR_FALSE,
+ NULL);
+ if (ava == NULL) return NULL;
+ rdn_length -= (ava-rdn)+ava_length;
+ rdn = ava + ava_length;
+
+ oid=nsslowcert_dataStart(ava, ava_length, &oid_length, PR_FALSE,
+ NULL);
+ if (oid == NULL) { return NULL; }
+ ava_length -= (oid-ava)+oid_length;
+ ava = oid+oid_length;
+
+ name=nsslowcert_dataStart(ava, ava_length, &name_length, PR_FALSE,
+ NULL);
+ if (name == NULL) { return NULL; }
+ ava_length -= (name-ava)+name_length;
+ ava = name+name_length;
+
+ oidItem.data = oid;
+ oidItem.len = oid_length;
+ type = SECOID_FindOIDTag(&oidItem);
+ if ((type == SEC_OID_PKCS9_EMAIL_ADDRESS) ||
+ (type == SEC_OID_RFC1274_MAIL)) {
+ /* Email is supposed to be IA5String, so no
+ * translation necessary */
+ char *emailAddr;
+ emailAddr = (char *)pkcs11_copyStaticData(name,name_length+1,
+ (unsigned char *)space,len);
+ if (emailAddr) {
+ emailAddr[name_length] = 0;
+ }
+ return emailAddr;
+ }
+ }
+ }
+ return NULL;
+}
+
+static char *
+nsslowcert_EmailAltName(NSSLOWCERTCertificate *cert, char *space,
+ unsigned int len)
+{
+ unsigned char *exts;
+ unsigned int exts_length;
+
+ /* unwrap the sequence */
+ exts = nsslowcert_dataStart(cert->extensions.data, cert->extensions.len,
+ &exts_length, PR_FALSE, NULL);
+ /* loop through extension */
+ while (exts && exts_length > 0) {
+ unsigned char * ext;
+ unsigned int ext_length;
+ unsigned char *oid;
+ unsigned int oid_length;
+ unsigned char *nameList;
+ unsigned int nameList_length;
+ SECItem oidItem;
+ SECOidTag type;
+
+ ext = nsslowcert_dataStart(exts, exts_length, &ext_length,
+ PR_FALSE, NULL);
+ if (ext == NULL) { break; }
+ exts_length -= (ext - exts) + ext_length;
+ exts = ext+ext_length;
+
+ oid=nsslowcert_dataStart(ext, ext_length, &oid_length, PR_FALSE, NULL);
+ if (oid == NULL) { break; }
+ ext_length -= (oid - ext) + oid_length;
+ ext = oid+oid_length;
+ oidItem.data = oid;
+ oidItem.len = oid_length;
+ type = SECOID_FindOIDTag(&oidItem);
+
+ /* get Alt Extension */
+ if (type != SEC_OID_X509_SUBJECT_ALT_NAME) {
+ continue;
+ }
+
+ /* skip passed the critical flag */
+ if (ext[0] == 0x01) { /* BOOLEAN */
+ unsigned char *dummy;
+ unsigned int dummy_length;
+ dummy = nsslowcert_dataStart(ext, ext_length, &dummy_length,
+ PR_FALSE, NULL);
+ if (dummy == NULL) { break; }
+ ext_length -= (dummy - ext) + dummy_length;
+ ext = dummy+dummy_length;
+ }
+
+
+ /* unwrap the name list */
+ nameList = nsslowcert_dataStart(ext, ext_length, &nameList_length,
+ PR_FALSE, NULL);
+ if (nameList == NULL) { break; }
+ ext_length -= (nameList - ext) + nameList_length;
+ ext = nameList+nameList_length;
+ nameList = nsslowcert_dataStart(nameList, nameList_length,
+ &nameList_length, PR_FALSE, NULL);
+ /* loop through the name list */
+ while (nameList && nameList_length > 0) {
+ unsigned char *thisName;
+ unsigned int thisName_length;
+
+ thisName = nsslowcert_dataStart(nameList, nameList_length,
+ &thisName_length, PR_FALSE, NULL);
+ if (thisName == NULL) { break; }
+ if (nameList[0] == 0xa2) { /* DNS Name */
+ SECItem dn;
+ char *emailAddr;
+
+ dn.data = thisName;
+ dn.len = thisName_length;
+ emailAddr = nsslowcert_EmailName(&dn, space, len);
+ if (emailAddr) {
+ return emailAddr;
+ }
+ }
+ if (nameList[0] == 0x81) { /* RFC 822name */
+ char *emailAddr;
+ emailAddr = (char *)pkcs11_copyStaticData(thisName,
+ thisName_length+1, (unsigned char *)space,len);
+ if (emailAddr) {
+ emailAddr[thisName_length] = 0;
+ }
+ return emailAddr;
+ }
+ nameList_length -= (thisName-nameList) + thisName_length;
+ nameList = thisName + thisName_length;
+ }
+ break;
+ }
+ return NULL;
+}
+
+static char *
+nsslowcert_GetCertificateEmailAddress(NSSLOWCERTCertificate *cert)
+{
+ char *emailAddr = NULL;
+ char *str;
+
+ emailAddr = nsslowcert_EmailName(&cert->derSubject,cert->emailAddrSpace,
+ sizeof(cert->emailAddrSpace));
+ /* couldn't find the email address in the DN, check the subject Alt name */
+ if (!emailAddr && cert->extensions.data) {
+ emailAddr = nsslowcert_EmailAltName(cert, cert->emailAddrSpace,
+ sizeof(cert->emailAddrSpace));
+ }
+
+
+ /* make it lower case */
+ str = emailAddr;
+ while ( str && *str ) {
+ *str = tolower( *str );
+ str++;
+ }
+ return emailAddr;
+
+}
+
+/*
+ * take a DER certificate and decode it into a certificate structure
+ */
+NSSLOWCERTCertificate *
+nsslowcert_DecodeDERCertificate(SECItem *derSignedCert, char *nickname)
+{
+ NSSLOWCERTCertificate *cert;
+ int rv;
+
+ /* allocate the certificate structure */
+ cert = nsslowcert_CreateCert();
+
+ if ( !cert ) {
+ goto loser;
+ }
+
+ /* point to passed in DER data */
+ cert->derCert = *derSignedCert;
+ cert->nickname = NULL;
+ cert->certKey.data = NULL;
+ cert->referenceCount = 1;
+
+ /* decode the certificate info */
+ rv = nsslowcert_GetCertFields(cert->derCert.data, cert->derCert.len,
+ &cert->derIssuer, &cert->serialNumber, &cert->derSN, &cert->derSubject,
+ &cert->validity, &cert->derSubjKeyInfo, &cert->extensions);
+
+ if (rv != SECSuccess) {
+ goto loser;
+ }
+
+ /* cert->subjectKeyID; x509v3 subject key identifier */
+ cert->subjectKeyID.data = NULL;
+ cert->subjectKeyID.len = 0;
+ cert->dbEntry = NULL;
+ cert ->trust = NULL;
+ cert ->dbhandle = NULL;
+
+ /* generate and save the database key for the cert */
+ rv = nsslowcert_KeyFromIssuerAndSNStatic(cert->certKeySpace,
+ sizeof(cert->certKeySpace), &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 */
+ cert->nickname = pkcs11_copyNickname(nickname,cert->nicknameSpace,
+ sizeof(cert->nicknameSpace));
+ }
+
+#ifdef FIXME
+ /* initialize the subjectKeyID */
+ rv = cert_GetKeyID(cert);
+ if ( rv != SECSuccess ) {
+ goto loser;
+ }
+#endif
+
+ /* set the email address */
+ cert->emailAddr = nsslowcert_GetCertificateEmailAddress(cert);
+
+
+ cert->referenceCount = 1;
+
+ return(cert);
+
+loser:
+ if (cert) {
+ nsslowcert_DestroyCertificate(cert);
+ }
+
+ return(0);
+}
+
+char *
+nsslowcert_FixupEmailAddr(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);
+}
+
+
+/*
+ * Generate a database key, based on serial number and issuer, from a
+ * DER certificate.
+ */
+SECStatus
+nsslowcert_KeyFromDERCert(PLArenaPool *arena, SECItem *derCert, SECItem *key)
+{
+ int rv;
+ NSSLOWCERTCertKey certkey;
+
+ PORT_Memset(&certkey, 0, sizeof(NSSLOWCERTCertKey));
+
+ rv = nsslowcert_GetCertFields(derCert->data, derCert->len,
+ &certkey.derIssuer, &certkey.serialNumber, NULL, NULL,
+ NULL, NULL, NULL);
+
+ if ( rv ) {
+ goto loser;
+ }
+
+ return(nsslowcert_KeyFromIssuerAndSN(arena, &certkey.derIssuer,
+ &certkey.serialNumber, key));
+loser:
+ return(SECFailure);
+}
+
+NSSLOWKEYPublicKey *
+nsslowcert_ExtractPublicKey(NSSLOWCERTCertificate *cert)
+{
+ NSSLOWCERTSubjectPublicKeyInfo spki;
+ NSSLOWKEYPublicKey *pubk;
+ SECItem os;
+ SECStatus rv;
+ PLArenaPool *arena;
+ SECOidTag tag;
+ SECItem newDerSubjKeyInfo;
+
+ arena = PORT_NewArena (DER_DEFAULT_CHUNKSIZE);
+ if (arena == NULL)
+ return NULL;
+
+ pubk = (NSSLOWKEYPublicKey *)
+ PORT_ArenaZAlloc(arena, sizeof(NSSLOWKEYPublicKey));
+ if (pubk == NULL) {
+ PORT_FreeArena (arena, PR_FALSE);
+ return NULL;
+ }
+
+ pubk->arena = arena;
+ PORT_Memset(&spki,0,sizeof(spki));
+
+ /* copy the DER into the arena, since Quick DER returns data that points
+ into the DER input, which may get freed by the caller */
+ rv = SECITEM_CopyItem(arena, &newDerSubjKeyInfo, &cert->derSubjKeyInfo);
+ if ( rv != SECSuccess ) {
+ PORT_FreeArena (arena, PR_FALSE);
+ return NULL;
+ }
+
+ /* we haven't bothered decoding the spki struct yet, do it now */
+ rv = SEC_QuickDERDecodeItem(arena, &spki,
+ nsslowcert_SubjectPublicKeyInfoTemplate, &newDerSubjKeyInfo);
+ if (rv != SECSuccess) {
+ PORT_FreeArena (arena, PR_FALSE);
+ return NULL;
+ }
+
+ /* Convert bit string length from bits to bytes */
+ os = spki.subjectPublicKey;
+ DER_ConvertBitString (&os);
+
+ tag = SECOID_GetAlgorithmTag(&spki.algorithm);
+ switch ( tag ) {
+ case SEC_OID_X500_RSA_ENCRYPTION:
+ case SEC_OID_PKCS1_RSA_ENCRYPTION:
+ pubk->keyType = NSSLOWKEYRSAKey;
+ prepare_low_rsa_pub_key_for_asn1(pubk);
+ rv = SEC_QuickDERDecodeItem(arena, pubk,
+ nsslowcert_RSAPublicKeyTemplate, &os);
+ if (rv == SECSuccess)
+ return pubk;
+ break;
+ case SEC_OID_ANSIX9_DSA_SIGNATURE:
+ pubk->keyType = NSSLOWKEYDSAKey;
+ prepare_low_dsa_pub_key_for_asn1(pubk);
+ rv = SEC_QuickDERDecodeItem(arena, pubk,
+ nsslowcert_DSAPublicKeyTemplate, &os);
+ if (rv == SECSuccess) return pubk;
+ break;
+ case SEC_OID_X942_DIFFIE_HELMAN_KEY:
+ pubk->keyType = NSSLOWKEYDHKey;
+ prepare_low_dh_pub_key_for_asn1(pubk);
+ rv = SEC_QuickDERDecodeItem(arena, pubk,
+ nsslowcert_DHPublicKeyTemplate, &os);
+ if (rv == SECSuccess) return pubk;
+ break;
+#ifndef NSS_DISABLE_ECC
+ case SEC_OID_ANSIX962_EC_PUBLIC_KEY:
+ pubk->keyType = NSSLOWKEYECKey;
+ /* Since PKCS#11 directly takes the DER encoding of EC params
+ * and public value, we don't need any decoding here.
+ */
+ rv = SECITEM_CopyItem(arena, &pubk->u.ec.ecParams.DEREncoding,
+ &spki.algorithm.parameters);
+ if ( rv != SECSuccess )
+ break;
+
+ /* Fill out the rest of the ecParams structure
+ * based on the encoded params
+ */
+ if (LGEC_FillParams(arena, &pubk->u.ec.ecParams.DEREncoding,
+ &pubk->u.ec.ecParams) != SECSuccess)
+ break;
+
+ rv = SECITEM_CopyItem(arena, &pubk->u.ec.publicValue, &os);
+ if (rv == SECSuccess) return pubk;
+ break;
+#endif /* NSS_DISABLE_ECC */
+ default:
+ rv = SECFailure;
+ break;
+ }
+
+ lg_nsslowkey_DestroyPublicKey (pubk);
+ return NULL;
+}
+
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