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/* vi: set sw=4 ts=4:
*
* Copyright (C) 2001 - 2020 Christian Hohnstaedt.
*
* All rights reserved.
*/
#include "pki_pkcs7.h"
#include "pki_x509.h"
#include "pki_key.h"
#include "func.h"
#include "exception.h"
#include <openssl/x509.h>
pki_pkcs7::pki_pkcs7(const QString &name)
:pki_multi(name)
{
}
pki_pkcs7::~pki_pkcs7()
{
if (p7)
PKCS7_free(p7);
}
void pki_pkcs7::encryptFile(pki_x509 *crt, const QString &filename)
{
XFile f(filename);
encryptBio(crt, BioByteArray(f.readAll()).ro());
}
void pki_pkcs7::encryptBio(pki_x509 *crt, BIO *bio)
{
STACK_OF(X509) *certstack;
if (!crt)
return;
certstack = sk_X509_new_null();
sk_X509_push(certstack, crt->getCert());
openssl_error();
if (p7)
PKCS7_free(p7);
p7 = PKCS7_encrypt(certstack, bio, EVP_aes_256_cbc(), PKCS7_BINARY);
openssl_error();
sk_X509_free(certstack);
}
void pki_pkcs7::signBio(pki_x509 *crt, BIO *bio)
{
pki_key *privkey;
EVP_PKEY *pk;
STACK_OF(X509) *certstack;
if (!crt)
return;
privkey = crt->getRefKey();
if (!privkey)
throw errorEx("No private key for signing found", getClassName());
certstack = sk_X509_new_null();
pki_x509 *signer = crt->getSigner();
if (signer == crt)
signer = NULL;
while (signer != NULL ) {
sk_X509_push(certstack, signer->getCert());
openssl_error();
if (signer == signer->getSigner() )
signer = NULL;
else
signer = signer->getSigner();
}
if (p7)
PKCS7_free(p7);
pk = privkey->decryptKey();
p7 = PKCS7_sign(crt->getCert(), pk, certstack, bio, PKCS7_BINARY);
EVP_PKEY_free(pk);
openssl_error();
sk_X509_free(certstack);
}
void pki_pkcs7::signFile(pki_x509 *crt, const QString &filename)
{
XFile f(filename);
f.open_read();
if (crt)
signBio(crt, BioByteArray(f.readAll()).ro());
}
void pki_pkcs7::signCert(pki_x509 *crt, pki_x509 *contCert)
{
BioByteArray bba;
i2d_X509_bio(bba, contCert->getCert());
signBio(crt, bba);
openssl_error();
}
void pki_pkcs7::writeP7(XFile &file, bool PEM)
{
if (!p7) {
p7 = PKCS7_new();
PKCS7_set_type(p7, NID_pkcs7_signed);
PKCS7_content_new(p7, NID_pkcs7_data);
pki_openssl_error();
}
foreach(pki_base *pki, multi) {
pki_x509 *x = dynamic_cast<pki_x509*>(pki);
if (x)
PKCS7_add_certificate(p7, X509_dup(x->getCert()));
}
BioByteArray b;
if (PEM)
PEM_write_bio_PKCS7(b, p7);
else
i2d_PKCS7_bio(b, p7);
openssl_error();
file.write(b);
}
void pki_pkcs7::append_certs(PKCS7 *myp7, const QString &name)
{
STACK_OF(X509) *certstack = NULL;
pki_openssl_error();
if (myp7 == NULL)
return;
setFilename(name);
autoIntName(name);
switch (OBJ_obj2nid(myp7->type)) {
case NID_pkcs7_signed:
certstack = myp7->d.sign->cert;
myp7->d.sign->cert = NULL;
break;
case NID_pkcs7_signedAndEnveloped:
certstack = myp7->d.signed_and_enveloped->cert;
myp7->d.signed_and_enveloped->cert = NULL;
break;
}
if (!certstack)
return;
for (int x = 0; x < sk_X509_num(certstack); x++) {
X509 *c = X509_dup(sk_X509_value(certstack, x));
pki_x509 *cert = new pki_x509(c);
openssl_error();
cert->autoIntName(getIntName());
cert->pkiSource = imported;
inheritFilename(cert);
append_item(cert);
}
sk_X509_free(certstack);
PKCS7_free(myp7);
}
void pki_pkcs7::fromPEM_BIO(BIO *bio, const QString &name)
{
PKCS7 *myp7 = PEM_read_bio_PKCS7(bio, NULL, NULL, NULL);
append_certs(myp7, name);
}
void pki_pkcs7::fromPEMbyteArray(const QByteArray &ba, const QString &name)
{
// Skip the pki_multi::fromPEMbyteArray(),
// which would cause an endless loop
pki_base::fromPEMbyteArray(ba, name);
}
void pki_pkcs7::fload(const QString &name)
{
PKCS7 *myp7;
XFile file(name);
file.open_read();
QByteArray ba(file.readAll());
myp7 = PEM_read_bio_PKCS7(BioByteArray(ba).ro(), NULL, NULL, NULL);
if (!myp7) {
ign_openssl_error();
myp7 = d2i_PKCS7_bio(BioByteArray(ba).ro(), NULL);
}
if (ign_openssl_error()) {
if (myp7)
PKCS7_free(myp7);
throw errorEx(tr("Unable to load the PKCS#7 file %1. Tried PEM and DER format.").arg(name));
}
append_certs(myp7, name);
}
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