mirror of https://github.com/nymea/nymea.git
114 lines
4.8 KiB
C++
114 lines
4.8 KiB
C++
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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* *
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* Copyright (C) 2017 Michael Zanetti <michael.zanetti@guh.io> *
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* *
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* This file is part of guh. *
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* *
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* Guh is free software: you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation, version 2 of the License. *
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* *
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* Guh is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with guh. If not, see <http://www.gnu.org/licenses/>. *
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* *
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* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
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#include "certificategenerator.h"
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#include "openssl/ssl.h"
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#include <QRegExp>
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#include <QFileInfo>
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#include <QDir>
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#include <QUuid>
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#include <QDebug>
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namespace guhserver {
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void CertificateGenerator::generate(const QString &certificateFilename, const QString &keyFilename)
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{
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EVP_PKEY * pkey = nullptr;
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RSA * rsa = nullptr;
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X509 * x509 = nullptr;
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X509_NAME * name = nullptr;
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BIO * bp_public = nullptr, * bp_private = nullptr;
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const char * buffer = nullptr;
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long size;
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pkey = EVP_PKEY_new();
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q_check_ptr(pkey);
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rsa = RSA_generate_key(2048, RSA_F4, nullptr, nullptr);
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q_check_ptr(rsa);
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EVP_PKEY_assign_RSA(pkey, rsa);
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x509 = X509_new();
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q_check_ptr(x509);
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// Randomize serial number in case a previous one is stuck in a browser (Chromium
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// completely rejects reused serial numbers and doesn't even allow to bypass it by an exception)
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qsrand(QUuid::createUuid().toString().remove(QRegExp("[a-zA-Z{}-]")).left(5).toInt());
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ASN1_INTEGER_set(X509_get_serialNumber(x509), qrand());
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X509_gmtime_adj(X509_get_notBefore(x509), 0); // not before current time
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X509_gmtime_adj(X509_get_notAfter(x509), 31536000L*10); // not after 10 years from this point
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X509_set_pubkey(x509, pkey);
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name = X509_get_subject_name(x509);
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q_check_ptr(name);
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X509_NAME_add_entry_by_txt(name, "E", MBSTRING_ASC, (unsigned char *)"guh.io", -1, -1, 0);
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X509_NAME_add_entry_by_txt(name, "CN", MBSTRING_ASC, (unsigned char *)"guh.io", -1, -1, 0);
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X509_NAME_add_entry_by_txt(name, "OU", MBSTRING_ASC, (unsigned char *)"home", -1, -1, 0);
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X509_NAME_add_entry_by_txt(name, "O", MBSTRING_ASC, (unsigned char *)"guh.io", -1, -1, 0);
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X509_NAME_add_entry_by_txt(name, "L", MBSTRING_ASC, (unsigned char *)"Vienna", -1, -1, 0);
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X509_NAME_add_entry_by_txt(name, "C", MBSTRING_ASC, (unsigned char *)"AT", -1, -1, 0);
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X509_set_issuer_name(x509, name);
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X509_sign(x509, pkey, EVP_sha256());
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bp_private = BIO_new(BIO_s_mem());
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q_check_ptr(bp_private);
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if(PEM_write_bio_PrivateKey(bp_private, pkey, nullptr, nullptr, 0, nullptr, nullptr) != 1)
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{
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EVP_PKEY_free(pkey);
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X509_free(x509);
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BIO_free_all(bp_private);
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qFatal("PEM_write_bio_PrivateKey");
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}
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bp_public = BIO_new(BIO_s_mem());
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q_check_ptr(bp_public);
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if(PEM_write_bio_X509(bp_public, x509) != 1)
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{
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EVP_PKEY_free(pkey);
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X509_free(x509);
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BIO_free_all(bp_public);
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BIO_free_all(bp_private);
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qFatal("PEM_write_bio_X509");
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}
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size = BIO_get_mem_data(bp_public, &buffer);
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q_check_ptr(buffer);
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QFileInfo certFi(certificateFilename);
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QDir dir;
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QFile certfile(certificateFilename);
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if (!dir.mkpath(certFi.absolutePath()) || !certfile.open(QFile::WriteOnly | QFile::Truncate) || certfile.write(buffer, size) != size) {
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qWarning() << "Error writing certificate file" << certificateFilename;
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}
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certfile.close();
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size = BIO_get_mem_data(bp_private, &buffer);
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q_check_ptr(buffer);
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QFileInfo keyFi(keyFilename);
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QFile keyFile(keyFilename);
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if (!dir.mkpath(keyFi.absolutePath()) || !keyFile.open(QFile::WriteOnly | QFile::Truncate) || keyFile.write(buffer, size) != size) {
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qWarning() << "Error writing key file" << keyFilename;
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}
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keyFile.close();
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EVP_PKEY_free(pkey); // this will also free the rsa key
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X509_free(x509);
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BIO_free_all(bp_public);
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BIO_free_all(bp_private);
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}
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}
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