tests/TrustTests/FrameworkTests/CertificateParseTests.m

   1 /*
   2  * Copyright (c) 2018 Apple Inc. All Rights Reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  *
  23  */
  24
  25 #include <AssertMacros.h>
  26 #import <XCTest/XCTest.h>
  27 #include <Security/SecCertificate.h>
  28 #include <Security/SecCertificatePriv.h>
  29 #include <Security/SecCertificateInternal.h>
  30 #include <Security/SecFramework.h>
  31 #include <utilities/SecCFRelease.h>
  32 #include "../TestMacroConversions.h"
  33
  34 #include "TrustFrameworkTestCase.h"
  35
  36 const NSString *kSecTestParseFailureResources = @"si-18-certificate-parse/ParseFailureCerts";
  37 const NSString *kSecTestParseSuccessResources = @"si-18-certificate-parse/ParseSuccessCerts";
  38 const NSString *kSecTestKeyFailureResources = @"si-18-certificate-parse/KeyFailureCerts";
  39 const NSString *kSecTestTODOFailureResources = @"si-18-certificate-parse/TODOFailureCerts";
  40 const NSString *kSecTestExtensionFailureResources = @"si-18-certificate-parse/ExtensionFailureCerts";
  41
  42 @interface CertificateParseTests : TrustFrameworkTestCase
  43
  44 @end
  45
  46 @implementation CertificateParseTests
  47
  48 - (void)testParseFailure {
  49     /* A bunch of certificates with different parsing errors */
  50     NSArray <NSURL *>* certURLs = [[NSBundle bundleForClass:[self class]]URLsForResourcesWithExtension:@".cer" subdirectory:(NSString *)kSecTestParseFailureResources];
  51     XCTAssertTrue([certURLs count] > 0, "Unable to find parse test failure certs in bundle.");
  52
  53     if ([certURLs count] > 0) {
  54         [certURLs enumerateObjectsUsingBlock:^(NSURL *url, __unused NSUInteger idx, __unused BOOL *stop) {
  55             NSData *certData = [NSData dataWithContentsOfURL:url];
  56             SecCertificateRef cert = SecCertificateCreateWithData(NULL, (__bridge CFDataRef)certData);
  57             is(cert, NULL, "Successfully parsed bad cert: %@", url);
  58             CFReleaseNull(cert);
  59         }];
  60     }
  61 }
  62
  63 - (void)testParseSuccess {
  64     /* A bunch of certificates with different parsing variations */
  65     NSArray <NSURL *>* certURLs = [[NSBundle bundleForClass:[self class]]URLsForResourcesWithExtension:@".cer" subdirectory:(NSString *)kSecTestParseSuccessResources];
  66     XCTAssertTrue([certURLs count] > 0, "Unable to find parse test success certs in bundle.");
  67
  68     if ([certURLs count] > 0) {
  69         [certURLs enumerateObjectsUsingBlock:^(NSURL *url, __unused NSUInteger idx, __unused BOOL *stop) {
  70             NSData *certData = [NSData dataWithContentsOfURL:url];
  71             SecCertificateRef cert = SecCertificateCreateWithData(NULL, (__bridge CFDataRef)certData);
  72             isnt(cert, NULL, "Failed to parse good cert: %@", url);
  73             is(SecCertificateGetUnparseableKnownExtension(cert), kCFNotFound, "Found bad extension in good certs: %@", url);
  74             CFReleaseNull(cert);
  75         }];
  76     }
  77 }
  78
  79 - (void)testKeyFailure {
  80     /* Parse failures that require public key extraction */
  81     NSArray <NSURL *>* certURLs = [[NSBundle bundleForClass:[self class]]URLsForResourcesWithExtension:@".cer" subdirectory:(NSString *)kSecTestKeyFailureResources];
  82     XCTAssertTrue([certURLs count] > 0, "Unable to find parse test key failure certs in bundle.");
  83
  84     if ([certURLs count] > 0) {
  85         [certURLs enumerateObjectsUsingBlock:^(NSURL *url, __unused NSUInteger idx, __unused BOOL *stop) {
  86             NSData *certData = [NSData dataWithContentsOfURL:url];
  87             SecCertificateRef cert = SecCertificateCreateWithData(NULL, (__bridge CFDataRef)certData);
  88             SecKeyRef pubkey = NULL;
  89             require_action(cert, blockOut,
  90                            fail("Failed to parse cert with SPKI error: %@", url));
  91             pubkey = SecCertificateCopyKey(cert);
  92             is(pubkey, NULL, "Successfully parsed bad SPKI: %@", url);
  93
  94         blockOut:
  95             CFReleaseNull(cert);
  96             CFReleaseNull(pubkey);
  97         }];
  98     }
  99 }
 100
 101 - (void)testTODOFailures {
 102     /* A bunch of certificates with different parsing errors that currently succeed. */
 103     NSArray <NSURL *>* certURLs = [[NSBundle bundleForClass:[self class]]URLsForResourcesWithExtension:@".cer" subdirectory:(NSString *)kSecTestTODOFailureResources];
 104     XCTAssertTrue([certURLs count] > 0, "Unable to find parse test TODO failure certs in bundle.");
 105
 106     if ([certURLs count] > 0) {
 107         [certURLs enumerateObjectsUsingBlock:^(NSURL *url, __unused NSUInteger idx, __unused BOOL *stop) {
 108             NSData *certData = [NSData dataWithContentsOfURL:url];
 109             SecCertificateRef cert = SecCertificateCreateWithData(NULL, (__bridge CFDataRef)certData);
 110             isnt(cert, NULL, "Successfully parsed bad TODO cert: %@", url);
 111             CFReleaseNull(cert);
 112         }];
 113     }
 114 }
 115
 116 - (void)testUnparseableExtensions {
 117     /* A bunch of certificates with different parsing errors in known (but non-critical) extensions */
 118     NSArray <NSURL *>* certURLs = [[NSBundle bundleForClass:[self class]]URLsForResourcesWithExtension:@".cer" subdirectory:(NSString *)kSecTestExtensionFailureResources];
 119     XCTAssertTrue([certURLs count] > 0, "Unable to find parse test extension failure certs in bundle.");
 120
 121     if ([certURLs count] > 0) {
 122         [certURLs enumerateObjectsUsingBlock:^(NSURL *url, __unused NSUInteger idx, __unused BOOL *stop) {
 123             NSData *certData = [NSData dataWithContentsOfURL:url];
 124             SecCertificateRef cert = SecCertificateCreateWithData(NULL, (__bridge CFDataRef)certData);
 125             isnt(cert, NULL, "Failed to parse bad cert with unparseable extension: %@", url);
 126             isnt(SecCertificateGetUnparseableKnownExtension(cert), kCFNotFound, "Unable to find unparseable extension: %@", url);
 127             CFReleaseNull(cert);
 128         }];
 129     }
 130 }
 131
 132 @end