Support for extracting and validating X.509 Name Constraints extensions

certs/test/cert-ext-nc-combined.cfg

@@ -0,0 +1,21 @@
+[ req ]
+distinguished_name = req_distinguished_name
+prompt             = no
+x509_extensions    = v3_ca
+
+[ req_distinguished_name ]
+C             = US
+ST            = Montana
+L             = Bozeman
+O             = wolfSSL Inc
+OU            = Dev and Testing
+CN            = www.wolfssl.com
+
+[ v3_ca ]
+subjectKeyIdentifier = hash
+authorityKeyIdentifier = keyid:always,issuer
+basicConstraints = critical, CA:true, pathlen:0
+keyUsage = critical, digitalSignature, cRLSign, keyCertSign
+nameConstraints = critical,permitted;URI:.wolfssl.com,permitted;DNS:.wolfssl.com
+nsComment       = "Testing combined URI and DNS name constraints"
+

certs/test/cert-ext-nc-combined.pem

@@ -0,0 +1,26 @@
+-----BEGIN CERTIFICATE-----
+MIIEWjCCA0KgAwIBAgIUVxNILYrtvic5fahe1thKz5+9MBkwDQYJKoZIhvcNAQEL
+BQAwezELMAkGA1UEBhMCVVMxEDAOBgNVBAgMB01vbnRhbmExEDAOBgNVBAcMB0Jv
+emVtYW4xFDASBgNVBAoMC3dvbGZTU0wgSW5jMRgwFgYDVQQLDA9EZXYgYW5kIFRl
+c3RpbmcxGDAWBgNVBAMMD3d3dy53b2xmc3NsLmNvbTAeFw0yNjAxMjIyMTE4MjJa
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+CwwPRGV2IGFuZCBUZXN0aW5nMRgwFgYDVQQDDA93d3cud29sZnNzbC5jb20wggEi
+MA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQDAlQjhV0HycW230kVBJwFlxkWu
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+LndvbGZzc2wuY29tMDwGCWCGSAGG+EIBDQQvFi1UZXN0aW5nIGNvbWJpbmVkIFVS
+SSBhbmQgRE5TIG5hbWUgY29uc3RyYWludHMwDQYJKoZIhvcNAQELBQADggEBAKA5
+4xPLP6RVWnOSkHYi+Cr6KegUOQNxmPVoaAwph+QMR8Z2sdLKIWt9U1xL4lkH6L51
+S54kLMH/jnv2WD9bYvDe+CjWZEM97Nm+YURHDv5QAoqxY9gw9Y8TMGi8xOC5cubR
+JXpjN4U60N/mdHbxMQbcuHJLowjXSlCp3q6S+iz2Bh7TaP8w7EoTR6pQEK6nMo6L
+C/CRztvpaFgOZ4ia8O8C3EHBaBSECWWtPMyh6WappneKkT2p9wh8LdMB58AjKqoJ
+/Zg6lp0Qj+NOhpVYXiT2+RlxVkttZJmLv3DIYH9LMsS8jhnTriIXpx2DaS56dEVn
+aFzrG/ecf3YLPUrKgHw=
+-----END CERTIFICATE-----

certs/test/cert-ext-ncdns.pem

@@ -0,0 +1,25 @@
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----

certs/test/cert-ext-ncip.cfg

@@ -0,0 +1,21 @@
+[ req ]
+distinguished_name = req_distinguished_name
+prompt             = no
+x509_extensions    = v3_ca
+
+[ req_distinguished_name ]
+C             = AU
+ST            = Queensland
+L             = Brisbane
+O             = wolfSSL Inc
+OU            = Engineering
+CN            = www.wolfssl.com
+
+[ v3_ca ]
+subjectKeyIdentifier = hash
+authorityKeyIdentifier = keyid:always,issuer
+basicConstraints = critical, CA:true, pathlen:0
+keyUsage = critical, digitalSignature, cRLSign, keyCertSign
+nameConstraints = critical,permitted;IP:192.168.1.0/255.255.255.0
+nsComment       = "Testing IP name constraints"
+

certs/test/cert-ext-ncip.pem

@@ -0,0 +1,25 @@
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----

certs/test/cert-ext-ncmulti.cfg

@@ -0,0 +1,21 @@
+[ req ]
+distinguished_name = req_distinguished_name
+prompt             = no
+x509_extensions    = v3_ca
+
+[ req_distinguished_name ]
+C             = US
+ST            = Montana
+L             = Bozeman
+O             = wolfSSL Inc
+OU            = Dev and Testing
+CN            = www.wolfssl.com
+
+[ v3_ca ]
+subjectKeyIdentifier = hash
+authorityKeyIdentifier = keyid:always,issuer
+basicConstraints = critical, CA:true, pathlen:0
+keyUsage = critical, digitalSignature, cRLSign, keyCertSign
+nameConstraints = critical,permitted;DNS:.example.com,permitted;email:.example.com,excluded;DNS:.blocked.example.com,excluded;email:.blocked.example.com
+nsComment       = "Testing mixed permitted and excluded name constraints"
+

certs/test/cert-ext-ncmulti.pem

@@ -0,0 +1,27 @@
+-----BEGIN CERTIFICATE-----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+AAGjggEQMIIBDDAdBgNVHQ4EFgQUsxEyyZKYhOLJ+NA7bgNCyh8OjjwwHwYDVR0j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+-----END CERTIFICATE-----

certs/test/gen-ext-certs.sh

@@ -81,7 +81,7 @@ rm -f ./certs/test/cert-ext-mnc.pem
 
 
 OUT=certs/test/cert-ext-ncdns
-KEYFILE=certs/test/cert-ext-nc-key.der
+KEYFILE=certs/test/cert-ext-ncdns-key.der
 CONFIG=certs/test/cert-ext-ncdns.cfg
 tee >$CONFIG <<EOF
 [ req ]
@@ -108,11 +108,68 @@ nsComment       = "Testing name constraints"
 EOF
 gen_cert
 rm -f ./certs/test/cert-ext-ncdns.cfg
-rm -f ./certs/test/cert-ext-ncdns.pem
 
-OUT=certs/test/cert-ext-ncmixed
-KEYFILE=certs/test/cert-ext-ncmixed-key.der
-CONFIG=certs/test/cert-ext-ncmixed.cfg
+OUT=certs/test/cert-ext-nc-combined
+KEYFILE=certs/test/cert-ext-nc-combined-key.der
+CONFIG=certs/test/cert-ext-nc-combined.cfg
+tee >$CONFIG <<EOF
+[ req ]
+distinguished_name = req_distinguished_name
+prompt             = no
+x509_extensions    = v3_ca
+
+[ req_distinguished_name ]
+C             = US
+ST            = Montana
+L             = Bozeman
+O             = wolfSSL Inc
+OU            = Dev and Testing
+CN            = www.wolfssl.com
+
+[ v3_ca ]
+subjectKeyIdentifier = hash
+authorityKeyIdentifier = keyid:always,issuer
+basicConstraints = critical, CA:true, pathlen:0
+keyUsage = critical, digitalSignature, cRLSign, keyCertSign
+nameConstraints = critical,permitted;URI:.wolfssl.com,permitted;DNS:.wolfssl.com
+nsComment       = "Testing combined URI and DNS name constraints"
+
+EOF
+gen_cert
+rm -f ./certs/test/cert-ext-nc-combined.cfg
+
+OUT=certs/test/cert-ext-ncmulti
+KEYFILE=certs/test/cert-ext-ncmulti-key.der
+CONFIG=certs/test/cert-ext-ncmulti.cfg
+tee >$CONFIG <<EOF
+[ req ]
+distinguished_name = req_distinguished_name
+prompt             = no
+x509_extensions    = v3_ca
+
+[ req_distinguished_name ]
+C             = US
+ST            = Montana
+L             = Bozeman
+O             = wolfSSL Inc
+OU            = Dev and Testing
+CN            = www.wolfssl.com
+
+[ v3_ca ]
+subjectKeyIdentifier = hash
+authorityKeyIdentifier = keyid:always,issuer
+basicConstraints = critical, CA:true, pathlen:0
+keyUsage = critical, digitalSignature, cRLSign, keyCertSign
+nameConstraints = critical,permitted;DNS:.example.com,permitted;email:.example.com,excluded;DNS:.blocked.example.com,excluded;email:.blocked.example.com
+nsComment       = "Testing mixed permitted and excluded name constraints"
+
+EOF
+gen_cert
+rm -f ./certs/test/cert-ext-ncmulti.cfg
+
+OUT=certs/test/cert-ext-ncip
+KEYFILE=certs/test/cert-ext-ncip-key.der
+CONFIG=certs/test/cert-ext-ncip.cfg
 tee >$CONFIG <<EOF
 [ req ]
 distinguished_name = req_distinguished_name
@@ -132,13 +189,12 @@ subjectKeyIdentifier = hash
 authorityKeyIdentifier = keyid:always,issuer
 basicConstraints = critical, CA:true, pathlen:0
 keyUsage = critical, digitalSignature, cRLSign, keyCertSign
-nameConstraints = critical,permitted;DNS:example, permitted;email:.wolfssl.com
-nsComment       = "Testing name constraints"
+nameConstraints = critical,permitted;IP:192.168.1.0/255.255.255.0
+nsComment       = "Testing IP name constraints"
 
 EOF
 gen_cert
-rm -f ./certs/test/cert-ext-ncmixed.cfg
-rm -f ./certs/test/cert-ext-ncmixed.pem
+rm -f ./certs/test/cert-ext-ncip.cfg
 
 OUT=certs/test/cert-ext-ia
 KEYFILE=certs/test/cert-ext-ia-key.der

certs/test/include.am

@@ -9,7 +9,14 @@ EXTRA_DIST += \
          certs/test/cert-ext-nc.cfg \
          certs/test/cert-ext-nc.der \
          certs/test/cert-ext-nc.pem \
+         certs/test/cert-ext-nc-combined.der \
+         certs/test/cert-ext-nc-combined.pem \
+         certs/test/cert-ext-ncip.der \
+         certs/test/cert-ext-ncip.pem \
          certs/test/cert-ext-ncdns.der \
+         certs/test/cert-ext-ncdns.pem \
+         certs/test/cert-ext-ncmulti.der \
+         certs/test/cert-ext-ncmulti.pem \
          certs/test/cert-ext-ncmixed.der \
          certs/test/cert-ext-mnc.der \
          certs/test/cert-ext-nct.cfg \

src/internal.c

@@ -4833,6 +4833,16 @@ void FreeX509(WOLFSSL_X509* x509)
         FreeAltNames(x509->altNames, x509->heap);
         x509->altNames = NULL;
     }
+    #ifndef IGNORE_NAME_CONSTRAINTS
+    if (x509->permittedNames) {
+        FreeNameSubtrees(x509->permittedNames, x509->heap);
+        x509->permittedNames = NULL;
+    }
+    if (x509->excludedNames) {
+        FreeNameSubtrees(x509->excludedNames, x509->heap);
+        x509->excludedNames = NULL;
+    }
+    #endif
 
     #ifdef WOLFSSL_DUAL_ALG_CERTS
     XFREE(x509->sapkiDer, x509->heap, DYNAMIC_TYPE_X509_EXT);
@@ -13325,6 +13335,62 @@ static void AddSessionCertToChain(WOLFSSL_X509_CHAIN* chain,
         * OPENSSL_EXTRA || OPENSSL_EXTRA_X509_SMALL ||
         * WOLFSSL_ACERT */
 
+#if (defined(KEEP_PEER_CERT) || defined(SESSION_CERTS) || \
+     defined(OPENSSL_EXTRA) || defined(OPENSSL_EXTRA_X509_SMALL)) && \
+    !defined(IGNORE_NAME_CONSTRAINTS)
+/* Duplicate a Base_entry */
+static Base_entry* BaseEntryDup(Base_entry* from, void* heap)
+{
+    Base_entry* entry;
+
+    if (from == NULL) {
+        return NULL;
+    }
+
+    entry = (Base_entry*)XMALLOC(sizeof(Base_entry), heap,
+                                 DYNAMIC_TYPE_ALTNAME);
+    if (entry == NULL) {
+        return NULL;
+    }
+    XMEMSET(entry, 0, sizeof(Base_entry));
+
+    entry->name = (char*)XMALLOC((word32)from->nameSz + 1, heap,
+                                 DYNAMIC_TYPE_ALTNAME);
+    if (entry->name == NULL) {
+        XFREE(entry, heap, DYNAMIC_TYPE_ALTNAME);
+        return NULL;
+    }
+    XMEMCPY(entry->name, from->name, (word32)from->nameSz);
+    entry->name[from->nameSz] = '\0';
+    entry->nameSz = from->nameSz;
+    entry->type = from->type;
+
+    return entry;
+}
+
+/* Copy a Base_entry list */
+static int CopyBaseEntry(Base_entry** to, Base_entry* from, void* heap)
+{
+    Base_entry** next = to;
+
+    if (to == NULL) {
+        return BAD_FUNC_ARG;
+    }
+
+    for (; from != NULL; from = from->next) {
+        Base_entry* entry = BaseEntryDup(from, heap);
+        if (entry == NULL) {
+            WOLFSSL_MSG("BaseEntryDup failed");
+            return MEMORY_E;
+        }
+        *next = entry;
+        next = &entry->next;
+    }
+
+    return 0;
+}
+#endif /* (KEEP_PEER_CERT || SESSION_CERTS || OPENSSL_EXTRA ||
+        *  OPENSSL_EXTRA_X509_SMALL) && !IGNORE_NAME_CONSTRAINTS */
 
 #if defined(KEEP_PEER_CERT) || defined(SESSION_CERTS) || \
     defined(OPENSSL_EXTRA) || defined(OPENSSL_EXTRA_X509_SMALL)
@@ -13661,6 +13727,23 @@ int CopyDecodedToX509(WOLFSSL_X509* x509, DecodedCert* dCert)
 #endif /* OPENSSL_EXTRA || OPENSSL_EXTRA_X509_SMALL */
     x509->altNamesNext   = x509->altNames;  /* index hint */
 
+#ifndef IGNORE_NAME_CONSTRAINTS
+    /* copy name constraints from dCert to X509 */
+    if (dCert->permittedNames != NULL) {
+        if (CopyBaseEntry(&x509->permittedNames, dCert->permittedNames,
+                          x509->heap) != 0) {
+            return MEMORY_E;
+        }
+    }
+    if (dCert->excludedNames != NULL) {
+        if (CopyBaseEntry(&x509->excludedNames, dCert->excludedNames,
+                          x509->heap) != 0) {
+            return MEMORY_E;
+        }
+    }
+    x509->nameConstraintCrit = dCert->extNameConstraintCrit;
+#endif /* !IGNORE_NAME_CONSTRAINTS */
+
     x509->isCa = dCert->isCA;
 #if defined(OPENSSL_EXTRA) || defined(OPENSSL_EXTRA_X509_SMALL)
     x509->basicConstCrit = dCert->extBasicConstCrit;