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Validate receipt using Apple Certificate data #198

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Validate receipt using Apple Certificate data #198

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6 changes: 6 additions & 0 deletions RMStore/Optional/RMAppReceipt.h
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Original file line number Diff line number Diff line change
Expand Up @@ -102,6 +102,12 @@ __attribute__((availability(ios,introduced=7.0)))
*/
+ (void)setAppleRootCertificateURL:(NSURL*)url;

/**
Sets the data of the Apple Root certificate that will be used to verifiy the signature of the bundle receipt. This takes precedence over AppleRootCertificateURL if both are set. If none is provided, AppleRootCertificateURL will be used. If no certificate is available, no signature verification will be performed.
@param data containing the Apple Root certificate.
*/
+ (void)setAppleRootCertificateData:(NSData*)data;

@end

/** Represents an in-app purchase in the app receipt.
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16 changes: 14 additions & 2 deletions RMStore/Optional/RMAppReceipt.m
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Original file line number Diff line number Diff line change
Expand Up @@ -103,6 +103,8 @@ static int RMASN1ReadInteger(const uint8_t **pp, long omax)

static NSURL *_appleRootCertificateURL = nil;

static NSData *_appleRootCertificateData = nil;

@implementation RMAppReceipt

- (instancetype)initWithASN1Data:(NSData*)asn1Data
Expand Down Expand Up @@ -215,6 +217,11 @@ + (void)setAppleRootCertificateURL:(NSURL*)url
_appleRootCertificateURL = url;
}

+ (void)setAppleRootCertificateData:(NSData*)data
{
_appleRootCertificateData = data;
}

#pragma mark - Utils

+ (NSData*)dataFromPCKS7Path:(NSString*)path
Expand All @@ -229,8 +236,13 @@ + (NSData*)dataFromPCKS7Path:(NSString*)path
if (!p7) return nil;

NSData *data;
NSURL *certificateURL = _appleRootCertificateURL ? : [[NSBundle mainBundle] URLForResource:@"AppleIncRootCertificate" withExtension:@"cer"];
NSData *certificateData = [NSData dataWithContentsOfURL:certificateURL];
NSData *certificateData = _appleRootCertificateData;

if( certificateData.length == 0 ) {
NSURL *certificateURL = _appleRootCertificateURL ? : [[NSBundle mainBundle] URLForResource:@"AppleIncRootCertificate" withExtension:@"cer"];
certificateData = [NSData dataWithContentsOfURL:certificateURL];
}

if (!certificateData || [self verifyPCKS7:p7 withCertificateData:certificateData])
{
struct pkcs7_st *contents = p7->d.sign->contents;
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