scclib/crypto/unittest/der_cert.cc

Test for distinguished encoding rules. Validates some pre-generated certificates.

/*
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Copyright (c) 2022, Stable Cloud Computing, Inc.
 
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   this software without specific prior written permission.
 
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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*/
#include <crypto/der.h>
#include <gtest/gtest.h>
#include <string>
#include <fstream>
#include <memory>
#include <sstream>
#include <cstdlib>
 
using std::cout;
using std::endl;
using std::string;
using std::ifstream;
using std::shared_ptr;
using std::stringstream;
using scc::crypto::DerDocument;
using scc::crypto::PemDocument;
 
struct DerCertTest : public testing::Test
{
    string reldir;
 
    DerCertTest()
    {
        // detect the bazel workspace environment, and create a relative path to the data files
        auto sd = getenv("TEST_SRCDIR");
        auto wd = getenv("TEST_WORKSPACE");
 
        stringstream dir;
 
        if (sd)
        {
            dir << sd << "/" << wd << "/crypto/unittest/openssl/";
        }
        else
        {
            dir << "openssl/";
        }
 
        reldir = dir.str();
    }
 
    static shared_ptr<PemDocument> pem_doc()
    {
        shared_ptr<PemDocument> ret(new PemDocument);
        return ret;
    }
 
    static shared_ptr<DerDocument> der_doc()
    {
        shared_ptr<DerDocument> ret(new DerDocument);
        return ret;
    }
 
    void parse(shared_ptr<PemDocument> doc, const string& name)
    {
        string infile = reldir+name;
        cout << "opening " << infile << endl;
        ifstream f(infile);
        ASSERT_TRUE(f.is_open());
        ASSERT_NO_THROW(doc->parse(f));
        cout << "***** PEM " << infile << " label=" << doc->label() << " chars=" << doc->chars_per_line() << ":" << endl;
        cout << *doc << endl;
    }
 
    void parse(shared_ptr<DerDocument> doc, const string& name)
    {
        string infile = reldir+name;
        cout << "opening " << infile << endl;
        ifstream f(infile);
        ASSERT_TRUE(f.is_open());
        ASSERT_NO_THROW(doc->parse(f));
        cout << "***** DER " << infile << ":" << endl;
        cout << *doc << endl;
    }
};
 
TEST_F(DerCertTest, rsapriv)
{
    auto pem = pem_doc();
    parse(pem, "rsapriv.pem");  
    auto der = der_doc();
    parse(der, "rsapriv.crt");
    ASSERT_TRUE(pem->equal(*der));
}
 
TEST_F(DerCertTest, rsapub)
{
    auto pem = pem_doc();
    parse(pem, "rsapub.pem");   
    auto der = der_doc();
    parse(der, "rsapub.crt");
    ASSERT_TRUE(pem->equal(*der));
}
 
TEST_F(DerCertTest, rsacert)
{
    auto pem = pem_doc();
    parse(pem, "rsacert.pem");  
    auto der = der_doc();
    parse(der, "rsacert.crt");
    ASSERT_TRUE(pem->equal(*der));
}
 
TEST_F(DerCertTest, ecpriv)
{
    auto pem = pem_doc();
    parse(pem, "ecpriv.pem");   
}
 
TEST_F(DerCertTest, ecpub)
{
    auto pem = pem_doc();
    parse(pem, "ecpub.pem");    
}
 
TEST_F(DerCertTest, eccert)
{
    auto pem = pem_doc();
    parse(pem, "eccert.pem");   
}
 
TEST_F(DerCertTest, rsacert_dumptest)
{
    auto pem = pem_doc();
    parse(pem, "rsacert.pem");  
    stringstream outs;
    pem->dump(outs);
    cout << "**** NEW CERT:" << endl;
    cout << outs.str() << endl;
    // now read a new doc
    auto newpem = pem_doc();
    ASSERT_NO_THROW(newpem->parse(outs));
    ASSERT_EQ(pem->chars_per_line(), newpem->chars_per_line());
    ASSERT_EQ(pem->label(), newpem->label());
    ASSERT_TRUE(pem->equal(*newpem));
}