Xcode 9 抛出涉及 'require' 的错误

Question

升级代码以在 Xcode 9 下构建时，我看到使用 require 和 require_noerr:

的代码出现编译错误

    require(length > offsetof(struct blob, cert), outLabel);

第一个错误是： error: implicit declaration of function 'require' is invalid in C99

我也得到了很多error: use of undeclared identifier 'outLabel'。这是在 RRTransactionVerifier.m 中，这是处理收据验证的 Apple 代码。

如何修复这些错误？

Answer 1

require 和 require_noerr 是以前在 AssertMacros.h 中定义的宏。自 Xcode 9 起，这些宏已更改。

原因记录在该头文件中：

For time immemorial, Mac OS X has defined version of most of these macros without the __ prefix, which could collide with similarly named functions or macros in user code, including new functionality in Boost and the C++ standard library.

macOS High Sierra and iOS 11 will now require that clients move to the new macros as defined above.

If you would like to enable the macros for use within your own project, you can define the __ASSERT_MACROS_DEFINE_VERSIONS_WITHOUT_UNDERSCORES macro via an Xcode Build Configuration. See "Add a build configuration (xcconfig) file" in Xcode Help.

因此，要解决此问题，您可以设置该定义，或更改您的代码以使用新宏。 require 现在是 __Require，require_noerr 现在是 __Require_noErr，等等。他们在头文件中提供了关于如何通过脚本更改代码的脚本：

编辑：在脚本第一行的末尾添加了一个反斜杠，否则终端会将命令分成两部分。

/*
To aid users of these macros in converting their sources, the following tops script 
will convert usages of the old macros into the new equivalents.  To do so, in Terminal 
go into the directory containing the sources to be converted and run this command.

find . -name '*.[c|cc|cp|cpp|m|mm|h]' -print0 |  xargs -0 tops \
-verbose \
      replace "check(<b args>)" with "__Check(<args>)" \
      replace "check_noerr(<b args>)" with "__Check_noErr(<args>)" \
      replace "check_noerr_string(<b args>)" with "__Check_noErr_String(<args>)" \
      replace "check_string(<b args>)" with "__Check_String(<args>)" \
      replace "require(<b args>)" with "__Require(<args>)" \
      replace "require_action(<b args>)" with "__Require_Action(<args>)" \
      replace "require_action_string(<b args>)" with "__Require_Action_String(<args>)" \
      replace "require_noerr(<b args>)" with "__Require_noErr(<args>)" \
      replace "require_noerr_action(<b args>)" with "__Require_noErr_Action(<args>)" \
      replace "require_noerr_action_string(<b args>)" with "__Require_noErr_Action_String(<args>)" \
      replace "require_noerr_string(<b args>)" with "__Require_noErr_String(<args>)" \
      replace "require_string(<b args>)" with "__Require_String(<args>)" \
      replace "verify(<b args>)" with "__Verify(<args>)" \
      replace "verify_action(<b args>)" with "__Verify_Action(<args>)" \
      replace "verify_noerr(<b args>)" with "__Verify_noErr(<args>)" \
      replace "verify_noerr_action(<b args>)" with "__Verify_noErr_Action(<args>)" \
      replace "verify_noerr_string(<b args>)" with "__Verify_noErr_String(<args>)" \
      replace "verify_string(<b args>)" with "__Verify_String(<args>)" \
      replace "ncheck(<b args>)" with "__nCheck(<args>)" \
      replace "ncheck_string(<b args>)" with "__nCheck_String(<args>)" \
      replace "nrequire(<b args>)" with "__nRequire(<args>)" \
      replace "nrequire_action(<b args>)" with "__nRequire_Action(<args>)" \
      replace "nrequire_action_quiet(<b args>)" with "__nRequire_Action_Quiet(<args>)" \
      replace "nrequire_action_string(<b args>)" with "__nRequire_Action_String(<args>)" \
      replace "nrequire_quiet(<b args>)" with "__nRequire_Quiet(<args>)" \
      replace "nrequire_string(<b args>)" with "__nRequire_String(<args>)" \
      replace "nverify(<b args>)" with "__nVerify(<args>)" \
      replace "nverify_string(<b args>)" with "__nVerify_String(<args>)" \
      replace "require_action_quiet(<b args>)" with "__Require_Action_Quiet(<args>)" \
      replace "require_noerr_action_quiet(<b args>)" with "__Require_noErr_Action_Quiet(<args>)" \
      replace "require_noerr_quiet(<b args>)" with "__Require_noErr_Quiet(<args>)" \
      replace "require_quiet(<b args>)" with "__Require_Quiet(<args>)" \
      replace "check_compile_time(<b args>)" with "__Check_Compile_Time(<args>)" \
      replace "debug_string(<b args>)" with "__Debug_String(<args>)"
*/

Answer 2

在/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/ MacOSX10.11.sdk/usr/include/AssertMacros.h 要求，现在修改了require_noerr宏。

按照此 link: https://github.com/fontforge/fontforge/issues/3164 查看更改后的列表。对于您的错误，问题出在这种方法中。这是VerificationController.m中修改的方法。

  BOOL checkReceiptSecurity(NSString *purchase_info_string, NSString *signature_string, CFDateRef purchaseDate)
{
BOOL valid = NO;
SecCertificateRef leaf = NULL, intermediate = NULL;
SecTrustRef trust = NULL;
SecPolicyRef policy = SecPolicyCreateBasicX509();

NSData *certificate_data;
NSArray *anchors;

/*
 Parse inputs:
 purchase_info_string and signature_string are base64 encoded JSON blobs that need to
 be decoded.
 */

__Require([purchase_info_string canBeConvertedToEncoding:NSASCIIStringEncoding] &&
        [signature_string canBeConvertedToEncoding:NSASCIIStringEncoding], outLabel);

size_t purchase_info_length;
uint8_t *purchase_info_bytes = base64_decode([purchase_info_string cStringUsingEncoding:NSASCIIStringEncoding],
                                             &purchase_info_length);

size_t signature_length;
uint8_t *signature_bytes = base64_decode([signature_string cStringUsingEncoding:NSASCIIStringEncoding],
                                         &signature_length);

__Require(purchase_info_bytes && signature_bytes, outLabel);

/*
 Binary format looks as follows:

 RECEIPTVERSION | SIGNATURE | CERTIFICATE SIZE | CERTIFICATE
 1 byte           128         4 bytes
 big endian

 Extract version, signature and certificate(s).
 Check receipt version == 2.
 Sanity check that signature is 128 bytes.
 Sanity check certificate size <= remaining payload data.
 */

 #pragma pack(push, 1)
struct signature_blob {
    uint8_t version;
    uint8_t signature[128];
    uint32_t cert_len;
    uint8_t certificate[];
} *signature_blob_ptr = (struct signature_blob *)signature_bytes;
 #pragma pack(pop)
uint32_t certificate_len;

/*
 Make sure the signature blob is long enough to safely extract the version and
 cert_len fields, then perform a sanity check on the fields.
 */
__Require(signature_length > offsetof(struct signature_blob, certificate), outLabel);
__Require(signature_blob_ptr->version == 2, outLabel);
certificate_len = ntohl(signature_blob_ptr->cert_len);

__Require(signature_length - offsetof(struct signature_blob, certificate) >= certificate_len, outLabel);

/*
 Validate certificate chains back to valid receipt signer; policy approximation for now
 set intermediate as a trust anchor; current intermediate lapses in 2016.
 */

certificate_data = [NSData dataWithBytes:signature_blob_ptr->certificate length:certificate_len];
__Require(leaf = SecCertificateCreateWithData(NULL, (__bridge CFDataRef) certificate_data), outLabel);

certificate_data = [NSData dataWithBytes:iTS_intermediate_der length:iTS_intermediate_der_len];
__Require(intermediate = SecCertificateCreateWithData(NULL, (__bridge CFDataRef) certificate_data), outLabel);

anchors = [NSArray arrayWithObject:(__bridge id)intermediate];
__Require(anchors, outLabel);

__Require_noErr(SecTrustCreateWithCertificates(leaf, policy, &trust), outLabel);
__Require_noErr(SecTrustSetAnchorCertificates(trust, (__bridge CFArrayRef) anchors), outLabel);

if (purchaseDate)
{
    __Require_noErr(SecTrustSetVerifyDate(trust, purchaseDate), outLabel);
}

SecTrustResultType trust_result;
__Require_noErr(SecTrustEvaluate(trust, &trust_result), outLabel);
__Require(trust_result == kSecTrustResultUnspecified, outLabel);

__Require(2 == SecTrustGetCertificateCount(trust), outLabel);

/*
 Chain is valid, use leaf key to verify signature on receipt by
 calculating SHA1(version|purchaseInfo)
 */

CC_SHA1_CTX sha1_ctx;
uint8_t to_be_verified_data[CC_SHA1_DIGEST_LENGTH];

CC_SHA1_Init(&sha1_ctx);
CC_SHA1_Update(&sha1_ctx, &signature_blob_ptr->version, sizeof(signature_blob_ptr->version));
CC_SHA1_Update(&sha1_ctx, purchase_info_bytes, purchase_info_length);
CC_SHA1_Final(to_be_verified_data, &sha1_ctx);

SecKeyRef receipt_signing_key = SecTrustCopyPublicKey(trust);
__Require(receipt_signing_key, outLabel);
__Require_noErr(SecKeyRawVerify(receipt_signing_key, kSecPaddingPKCS1SHA1,
                              to_be_verified_data, sizeof(to_be_verified_data),
                              signature_blob_ptr->signature, sizeof(signature_blob_ptr->signature)),
              outLabel);

/*
 Optional:  Verify that the receipt certificate has the 1.2.840.113635.100.6.5.1 Null OID

 The signature is a 1024-bit RSA signature.
 */

valid = YES;

outLabel:
  if (leaf) CFRelease(leaf);
  if (intermediate) CFRelease(intermediate);
  if (trust) CFRelease(trust);
  if (policy) CFRelease(policy);

return valid;
}

Xcode 9 抛出涉及 'require' 的错误

Xcode 9 throws errors involving 'require'

xcode

xcode9