CertificateParseTests.m   [plain text]

/*
* Copyright (c) 2018 Apple Inc. All Rights Reserved.
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#include <AssertMacros.h>
#import <XCTest/XCTest.h>
#include <Security/SecCertificate.h>
#include <Security/SecCertificatePriv.h>
#include <Security/SecCertificateInternal.h>
#include <Security/SecFramework.h>
#include <utilities/SecCFRelease.h>
#include "../TestMacroConversions.h"

#include "TrustFrameworkTestCase.h"

const NSString *kSecTestParseFailureResources = @"si-18-certificate-parse/ParseFailureCerts";
const NSString *kSecTestParseSuccessResources = @"si-18-certificate-parse/ParseSuccessCerts";
const NSString *kSecTestKeyFailureResources = @"si-18-certificate-parse/KeyFailureCerts";
const NSString *kSecTestTODOFailureResources = @"si-18-certificate-parse/TODOFailureCerts";
const NSString *kSecTestExtensionFailureResources = @"si-18-certificate-parse/ExtensionFailureCerts";

@interface CertificateParseTests : TrustFrameworkTestCase

@end

@implementation CertificateParseTests

- (void)testParseFailure {
/* A bunch of certificates with different parsing errors */
NSArray <NSURL *>* certURLs = [[NSBundle bundleForClass:[self class]]URLsForResourcesWithExtension:@".cer" subdirectory:(NSString *)kSecTestParseFailureResources];
XCTAssertTrue([certURLs count] > 0, "Unable to find parse test failure certs in bundle.");

if ([certURLs count] > 0) {
[certURLs enumerateObjectsUsingBlock:^(NSURL *url, __unused NSUInteger idx, __unused BOOL *stop) {
NSData *certData = [NSData dataWithContentsOfURL:url];
SecCertificateRef cert = SecCertificateCreateWithData(NULL, (__bridge CFDataRef)certData);
is(cert, NULL, "Successfully parsed bad cert: %@", url);
CFReleaseNull(cert);
}];
}
}

- (void)testParseSuccess {
/* A bunch of certificates with different parsing variations */
NSArray <NSURL *>* certURLs = [[NSBundle bundleForClass:[self class]]URLsForResourcesWithExtension:@".cer" subdirectory:(NSString *)kSecTestParseSuccessResources];
XCTAssertTrue([certURLs count] > 0, "Unable to find parse test success certs in bundle.");

if ([certURLs count] > 0) {
[certURLs enumerateObjectsUsingBlock:^(NSURL *url, __unused NSUInteger idx, __unused BOOL *stop) {
NSData *certData = [NSData dataWithContentsOfURL:url];
SecCertificateRef cert = SecCertificateCreateWithData(NULL, (__bridge CFDataRef)certData);
isnt(cert, NULL, "Failed to parse good cert: %@", url);
is(SecCertificateGetUnparseableKnownExtension(cert), kCFNotFound, "Found bad extension in good certs: %@", url);
CFReleaseNull(cert);
}];
}
}

- (void)testKeyFailure {
/* Parse failures that require public key extraction */
NSArray <NSURL *>* certURLs = [[NSBundle bundleForClass:[self class]]URLsForResourcesWithExtension:@".cer" subdirectory:(NSString *)kSecTestKeyFailureResources];
XCTAssertTrue([certURLs count] > 0, "Unable to find parse test key failure certs in bundle.");

if ([certURLs count] > 0) {
[certURLs enumerateObjectsUsingBlock:^(NSURL *url, __unused NSUInteger idx, __unused BOOL *stop) {
NSData *certData = [NSData dataWithContentsOfURL:url];
SecCertificateRef cert = SecCertificateCreateWithData(NULL, (__bridge CFDataRef)certData);
SecKeyRef pubkey = NULL;
require_action(cert, blockOut,
fail("Failed to parse cert with SPKI error: %@", url));
pubkey = SecCertificateCopyKey(cert);
is(pubkey, NULL, "Successfully parsed bad SPKI: %@", url);

blockOut:
CFReleaseNull(cert);
CFReleaseNull(pubkey);
}];
}
}

- (void)testTODOFailures {
/* A bunch of certificates with different parsing errors that currently succeed. */
NSArray <NSURL *>* certURLs = [[NSBundle bundleForClass:[self class]]URLsForResourcesWithExtension:@".cer" subdirectory:(NSString *)kSecTestTODOFailureResources];
XCTAssertTrue([certURLs count] > 0, "Unable to find parse test TODO failure certs in bundle.");

if ([certURLs count] > 0) {
[certURLs enumerateObjectsUsingBlock:^(NSURL *url, __unused NSUInteger idx, __unused BOOL *stop) {
NSData *certData = [NSData dataWithContentsOfURL:url];
SecCertificateRef cert = SecCertificateCreateWithData(NULL, (__bridge CFDataRef)certData);
isnt(cert, NULL, "Successfully parsed bad TODO cert: %@", url);
CFReleaseNull(cert);
}];
}
}

- (void)testUnparseableExtensions {
/* A bunch of certificates with different parsing errors in known (but non-critical) extensions */
NSArray <NSURL *>* certURLs = [[NSBundle bundleForClass:[self class]]URLsForResourcesWithExtension:@".cer" subdirectory:(NSString *)kSecTestExtensionFailureResources];
XCTAssertTrue([certURLs count] > 0, "Unable to find parse test extension failure certs in bundle.");

if ([certURLs count] > 0) {
[certURLs enumerateObjectsUsingBlock:^(NSURL *url, __unused NSUInteger idx, __unused BOOL *stop) {
NSData *certData = [NSData dataWithContentsOfURL:url];
SecCertificateRef cert = SecCertificateCreateWithData(NULL, (__bridge CFDataRef)certData);
isnt(cert, NULL, "Failed to parse bad cert with unparseable extension: %@", url);
isnt(SecCertificateGetUnparseableKnownExtension(cert), kCFNotFound, "Unable to find unparseable extension: %@", url);
CFReleaseNull(cert);
}];
}
}

@end