asn1: Implement a parsed ASN.1 tree cache

In order to unmarry the parser from the future builder, but still retain
efficiency, we need to be able to cache parsed ASN.1 trees. The ASN.1
cache provides this. In addition it carries around the loaded ASN.1
definitions.

https://bugs.freedesktop.org/show_bug.cgi?id=62329

1 files changed, 46 insertions, 0 deletions

diff --git a/common/tests/test-asn1.c b/common/tests/test-asn1.c
index 0034623..0335fa6 100644
--- a/common/tests/test-asn1.c
+++ b/common/tests/test-asn1.c
@@ -89,6 +89,51 @@ test_tlv_length (CuTest *cu)
 	teardown (cu);
 }
 
+static const unsigned char test_eku_server_and_client[] = {
+	0x30, 0x14, 0x06, 0x08, 0x2b, 0x06, 0x01, 0x05, 0x05, 0x07, 0x03, 0x01, 0x06, 0x08, 0x2b, 0x06,
+	0x01, 0x05, 0x05, 0x07, 0x03, 0x02,
+};
+
+static void
+test_asn1_cache (CuTest *cu)
+{
+	p11_asn1_cache *cache;
+	p11_dict *defs;
+	node_asn *asn;
+	node_asn *check;
+
+	cache = p11_asn1_cache_new ();
+	CuAssertPtrNotNull (cu, cache);
+
+	defs = p11_asn1_cache_defs (cache);
+	CuAssertPtrNotNull (cu, defs);
+
+	asn = p11_asn1_decode (defs, "PKIX1.ExtKeyUsageSyntax",
+	                       test_eku_server_and_client,
+	                       sizeof (test_eku_server_and_client), NULL);
+	CuAssertPtrNotNull (cu, defs);
+
+	/* Place the parsed data in the cache */
+	p11_asn1_cache_take (cache, asn, "PKIX1.ExtKeyUsageSyntax",
+	                     test_eku_server_and_client,
+	                     sizeof (test_eku_server_and_client));
+
+	/* Get it back out */
+	check = p11_asn1_cache_get (cache, "PKIX1.ExtKeyUsageSyntax",
+	                            test_eku_server_and_client,
+	                            sizeof (test_eku_server_and_client));
+	CuAssertPtrEquals (cu, asn, check);
+
+	/* Flush should remove it */
+	p11_asn1_cache_flush (cache);
+	check = p11_asn1_cache_get (cache, "PKIX1.ExtKeyUsageSyntax",
+	                            test_eku_server_and_client,
+	                            sizeof (test_eku_server_and_client));
+	CuAssertPtrEquals (cu, NULL, check);
+
+	p11_asn1_cache_free (cache);
+}
+
 int
 main (void)
 {
@@ -100,6 +145,7 @@ main (void)
 	p11_debug_init ();
 
 	SUITE_ADD_TEST (suite, test_tlv_length);
+	SUITE_ADD_TEST (suite, test_asn1_cache);
 
 	CuSuiteRun (suite);
 	CuSuiteSummary (suite, output);