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Issue #16: Fix compilation error with OpenSSL 3

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This commit is contained in:
Jakub Melka 2022-06-25 17:02:41 +02:00
parent 8d925c513e
commit 1c03bd85cd
1 changed files with 13 additions and 17 deletions
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30
Pdf4QtLib/sources/pdfsignaturehandler.cpp
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@ -43,6 +43,9 @@
namespace pdf namespace pdf
{ {
template<typename T>
using openssl_ptr = std::unique_ptr<T, void(*)(T*)>;
static QMutex s_globalOpenSSLMutex(QMutex::Recursive); static QMutex s_globalOpenSSLMutex(QMutex::Recursive);
/// OpenSSL is not thread safe. /// OpenSSL is not thread safe.
@ -1444,46 +1447,44 @@ void PDFSignatureHandler_adbe_pkcs7_rsa_sha1::verifyRSACertificate(PDFSignatureV
void PDFSignatureHandler_adbe_pkcs7_rsa_sha1::verifyRSASignature(PDFSignatureVerificationResult& result) const void PDFSignatureHandler_adbe_pkcs7_rsa_sha1::verifyRSASignature(PDFSignatureVerificationResult& result) const
{ {
// Jakub Melka: we will use first certificate to validate signature // Jakub Melka: we will use first certificate to validate signature
X509* certificate = createCertificate(0); openssl_ptr<X509> certificate(createCertificate(0), X509_free);
if (!certificate) if (!certificate)
{ {
result.addSignatureCertificateMissingError(); result.addSignatureCertificateMissingError();
return; return;
} }
EVP_PKEY* evpKey = X509_get0_pubkey(certificate); EVP_PKEY* evpKey = X509_get0_pubkey(certificate.get());
if (!evpKey) if (!evpKey)
{ {
X509_free(certificate);
result.addSignatureCertificateMissingError(); result.addSignatureCertificateMissingError();
return; return;
} }
RSA* rsa = EVP_PKEY_get0_RSA(evpKey); openssl_ptr<RSA> rsa(EVP_PKEY_get1_RSA(evpKey), RSA_free);
if (!rsa) if (!rsa)
{ {
X509_free(certificate);
result.addSignatureCertificateMissingError(); result.addSignatureCertificateMissingError();
return; return;
} }
QByteArray outputBuffer; QByteArray outputBuffer;
if (BIO* bio = this->getSignedDataBuffer(result, outputBuffer)) openssl_ptr<BIO> bio(this->getSignedDataBuffer(result, outputBuffer), BIO_free_all);
if (bio)
{ {
const PDFSignature& signature = m_signatureField->getSignature(); const PDFSignature& signature = m_signatureField->getSignature();
const QByteArray& signKey = signature.getContents(); const QByteArray& signKey = signature.getContents();
const unsigned char* encryptedSign = convertByteArrayToUcharPtr(signKey); const unsigned char* encryptedSign = convertByteArrayToUcharPtr(signKey);
const unsigned int encryptedSignLength = signKey.length(); const unsigned int encryptedSignLength = signKey.length();
if (ASN1_OCTET_STRING* encryptedString = d2i_ASN1_OCTET_STRING(nullptr, &encryptedSign, encryptedSignLength))
openssl_ptr<ASN1_OCTET_STRING> encryptedString(d2i_ASN1_OCTET_STRING(nullptr, &encryptedSign, encryptedSignLength), ASN1_OCTET_STRING_free);
if (encryptedString)
{ {
int algorithmNID = NID_undef; int algorithmNID = NID_undef;
QByteArray digestBuffer; QByteArray digestBuffer;
if (!getMessageDigest(outputBuffer, encryptedString, rsa, algorithmNID, digestBuffer)) if (!getMessageDigest(outputBuffer, encryptedString.get(), rsa.get(), algorithmNID, digestBuffer))
{ {
BIO_free(bio);
X509_free(certificate);
ASN1_OCTET_STRING_free(encryptedString);
result.addSignatureDataOtherError(); result.addSignatureDataOtherError();
return; return;
} }
@ -1495,8 +1496,7 @@ void PDFSignatureHandler_adbe_pkcs7_rsa_sha1::verifyRSASignature(PDFSignatureVer
OBJ_obj2txt(buffer.data(), int(buffer.size() - 1), OBJ_nid2obj(algorithmNID), 0); OBJ_obj2txt(buffer.data(), int(buffer.size() - 1), OBJ_nid2obj(algorithmNID), 0);
result.addHashAlgorithm(QString::fromLatin1(buffer.data())); result.addHashAlgorithm(QString::fromLatin1(buffer.data()));
const int verifyValue = RSA_verify(algorithmNID, digest, digestLength, encryptedString->data, encryptedString->length, rsa); const int verifyValue = RSA_verify(algorithmNID, digest, digestLength, encryptedString->data, encryptedString->length, rsa.get());
ASN1_OCTET_STRING_free(encryptedString);
if (verifyValue == 0) if (verifyValue == 0)
{ {
@ -1519,12 +1519,8 @@ void PDFSignatureHandler_adbe_pkcs7_rsa_sha1::verifyRSASignature(PDFSignatureVer
{ {
result.addSignatureDataOtherError(); result.addSignatureDataOtherError();
} }
BIO_free(bio);
} }
X509_free(certificate);
if (!result.hasSignatureError()) if (!result.hasSignatureError())
{ {
result.setFlag(PDFSignatureVerificationResult::Signature_OK, true); result.setFlag(PDFSignatureVerificationResult::Signature_OK, true);