name constraints: compute permitted set strictly

RFC 5280 6.1.4. states that the permitted_subtrees variable is
constructed as an intersection of its previous value.

Co-authored-by: Nikos Mavrogiannopoulos <nmav@redhat.com>

1 files changed, 87 insertions, 0 deletions

diff --git a/tests/test-chains.h b/tests/test-chains.h
index 064a3905ee..cc3f108e04 100644
--- a/tests/test-chains.h
+++ b/tests/test-chains.h
@@ -539,6 +539,92 @@ static const char *nc_bad3[] = {
 NULL
 };
 
+static const char *nc_bad4[] = {
+/* DNSname: sub2.example.org */
+"-----BEGIN CERTIFICATE-----\n"
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+"8ZOkdWuv\n"
+"-----END CERTIFICATE-----\n",
+/* Name Constraints (critical):
+   Permitted: DNSname: sub1.example.org */
+"-----BEGIN CERTIFICATE-----\n"
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+"qPlLDNLLWp9nfCk/55QqSf34dcKomg==\n"
+"-----END CERTIFICATE-----\n",
+/* Name Constraints (critical):
+   Permitted: DNSname: example.org */
+"-----BEGIN CERTIFICATE-----\n"
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+"-----END CERTIFICATE-----\n",
+"-----BEGIN CERTIFICATE-----\n"
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+"-----END CERTIFICATE-----\n",
+NULL
+};
+
 static const char *nc_good1[] = {
 /* DNSname: www.example.com */
 "-----BEGIN CERTIFICATE-----\n"
@@ -1793,6 +1879,7 @@ static struct
   { "name constraints chain bad1", nc_bad1, &nc_bad1[2], 0, GNUTLS_CERT_INVALID | GNUTLS_CERT_SIGNER_CONSTRAINTS_FAILURE, NULL, 1412850586},
   { "name constraints chain bad2", nc_bad2, &nc_bad2[4], 0, GNUTLS_CERT_INVALID | GNUTLS_CERT_SIGNER_CONSTRAINTS_FAILURE, NULL, 1412850586},
   { "name constraints chain bad3", nc_bad3, &nc_bad3[2], 0, GNUTLS_CERT_INVALID | GNUTLS_CERT_SIGNER_CONSTRAINTS_FAILURE, NULL, 1412850586},
+  { "name constraints chain bad4", nc_bad4, &nc_bad4[3], 0, GNUTLS_CERT_INVALID | GNUTLS_CERT_SIGNER_CONSTRAINTS_FAILURE, NULL, 1412850586},
   { "not-modified", modified2, &modified2[3], 0, 0, NULL, 1412850586},
   { "kp-interm", kp_fail1, &kp_fail1[3], 0, GNUTLS_CERT_INVALID | GNUTLS_CERT_PURPOSE_MISMATCH, GNUTLS_KP_TLS_WWW_SERVER, 1412850586},
   { "kp-fin", kp_fail2, &kp_fail2[3], 0, GNUTLS_CERT_INVALID | GNUTLS_CERT_PURPOSE_MISMATCH, GNUTLS_KP_TLS_WWW_SERVER, 1412850586},