/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/*
 * test_customcrlchecker.c
 *
 * Test Custom CRL Checking
 *
 */

#include "testutil.h"
#include "testutil_nss.h"

#define PKIX_TEST_MAX_CERTS 10
#define PKIX_TEST_COLLECTIONCERTSTORE_NUM_CRLS 5

static void *plContext = NULL;
char *dirName = NULL; /* also used in callback */

static void
printUsage1(char *pName)
{
    printf("\nUSAGE: %s test-purpose [ENE|EE] ", pName);
    printf("cert [certs].\n");
}

static void
printUsageMax(PKIX_UInt32 numCerts)
{
    printf("\nUSAGE ERROR: number of certs %d exceed maximum %d\n",
           numCerts, PKIX_TEST_MAX_CERTS);
}

static PKIX_Error *
getCRLCallback(
    PKIX_CertStore *store,
    PKIX_CRLSelector *crlSelector,
    void **pNBIOContext,
    PKIX_List **pCrlList,
    void *plContext)
{
    char *crlFileNames[] = { "chem.crl",
                             "phys.crl",
                             "prof.crl",
                             "sci.crl",
                             "test.crl",
                             0 };
    PKIX_PL_CRL *crl = NULL;
    PKIX_List *crlList = NULL;
    PKIX_UInt32 i = 0;

    PKIX_TEST_STD_VARS();

    PKIX_TEST_EXPECT_NO_ERROR(PKIX_List_Create(&crlList, plContext));

    while (crlFileNames[i]) {

        crl = createCRL(dirName, crlFileNames[i++], plContext);

        if (crl != NULL) {

            PKIX_TEST_EXPECT_NO_ERROR(PKIX_List_AppendItem(crlList, (PKIX_PL_Object *)crl, plContext));

            PKIX_TEST_DECREF_BC(crl);
        }
    }

    *pCrlList = crlList;

cleanup:

    PKIX_TEST_RETURN();

    return (0); /* this function is called by libpkix */
}

static PKIX_Error *
getCRLContinue(
    PKIX_CertStore *store,
    PKIX_CRLSelector *crlSelector,
    void **pNBIOContext,
    PKIX_List **pCrlList,
    void *plContext)
{
    return (NULL);
}

static PKIX_Error *
getCertCallback(
    PKIX_CertStore *store,
    PKIX_CertSelector *certSelector,
    void **pNBIOContext,
    PKIX_List **pCerts,
    void *plContext)
{
    return (NULL);
}

static PKIX_Error *
getCertContinue(
    PKIX_CertStore *store,
    PKIX_CertSelector *certSelector,
    void **pNBIOContext,
    PKIX_List **pCerts,
    void *plContext)
{
    return (NULL);
}

static PKIX_Error *
testCRLSelectorMatchCallback(
    PKIX_CRLSelector *selector,
    PKIX_PL_CRL *crl,
    void *plContext)
{
    PKIX_ComCRLSelParams *comCrlSelParams = NULL;
    PKIX_List *issuerList = NULL;
    PKIX_PL_X500Name *issuer = NULL;
    PKIX_PL_X500Name *crlIssuer = NULL;
    PKIX_UInt32 numIssuers = 0;
    PKIX_UInt32 i = 0;
    PKIX_Boolean result = PKIX_FALSE;
    PKIX_Error *error = NULL;
    char *errorText = "Not an error, CRL Select mismatch";

    PKIX_TEST_STD_VARS();

    subTest("Custom_Selector_MatchCallback");

    if (selector != NULL) {
        PKIX_TEST_EXPECT_NO_ERROR(PKIX_CRLSelector_GetCommonCRLSelectorParams(selector, &comCrlSelParams, plContext));
    }

    if (crl != NULL) {
        PKIX_TEST_EXPECT_NO_ERROR(PKIX_PL_CRL_GetIssuer(crl, &crlIssuer, plContext));
    }

    if (comCrlSelParams != NULL) {
        PKIX_TEST_EXPECT_NO_ERROR(PKIX_ComCRLSelParams_GetIssuerNames(comCrlSelParams, &issuerList, plContext));
    }

    if (issuerList != NULL) {

        PKIX_TEST_EXPECT_NO_ERROR(PKIX_List_GetLength(issuerList, &numIssuers, plContext));

        for (i = 0; i < numIssuers; i++) {

            PKIX_TEST_EXPECT_NO_ERROR(PKIX_List_GetItem(issuerList,
                                                        i, (PKIX_PL_Object **)&issuer,
                                                        plContext));

            PKIX_TEST_EXPECT_NO_ERROR(PKIX_PL_Object_Equals((PKIX_PL_Object *)crlIssuer,
                                                            (PKIX_PL_Object *)issuer,
                                                            &result,
                                                            plContext));

            if (result != PKIX_TRUE) {
                break;
            }

            if (i == numIssuers - 1) {

                PKIX_TEST_EXPECT_NO_ERROR(PKIX_Error_Create(0,
                                                            NULL,
                                                            NULL,
                                                            PKIX_TESTNOTANERRORCRLSELECTMISMATCH,
                                                            &error,
                                                            plContext));

                PKIX_TEST_DECREF_AC(issuer);
                issuer = NULL;
                break;
            }

            PKIX_TEST_DECREF_AC(issuer);
        }
    }

cleanup:

    PKIX_TEST_DECREF_AC(comCrlSelParams);
    PKIX_TEST_DECREF_AC(crlIssuer);
    PKIX_TEST_DECREF_AC(issuer);
    PKIX_TEST_DECREF_AC(issuerList);

    PKIX_TEST_RETURN();

    return (error);
}

static PKIX_Error *
testAddIssuerName(PKIX_ComCRLSelParams *comCrlSelParams, char *issuerName)
{
    PKIX_PL_String *issuerString = NULL;
    PKIX_PL_X500Name *issuer = NULL;
    PKIX_UInt32 length = 0;

    PKIX_TEST_STD_VARS();

    subTest("PKIX_ComCRLSelParams_AddIssuerName");

    length = PL_strlen(issuerName);

    PKIX_TEST_EXPECT_NO_ERROR(PKIX_PL_String_Create(PKIX_UTF8,
                                                    issuerName,
                                                    length,
                                                    &issuerString,
                                                    plContext));

    PKIX_TEST_EXPECT_NO_ERROR(PKIX_PL_X500Name_Create(issuerString,
                                                      &issuer,
                                                      plContext));

    PKIX_TEST_EXPECT_NO_ERROR(PKIX_ComCRLSelParams_AddIssuerName(comCrlSelParams, issuer, plContext));

cleanup:

    PKIX_TEST_DECREF_AC(issuerString);
    PKIX_TEST_DECREF_AC(issuer);

    PKIX_TEST_RETURN();

    return (0);
}

static PKIX_Error *
testCustomCertStore(PKIX_ValidateParams *valParams)
{
    PKIX_CertStore_CRLCallback crlCallback;
    PKIX_CertStore *certStore = NULL;
    PKIX_ProcessingParams *procParams = NULL;
    char *issuerName1 = "cn=science,o=mit,c=us";
    char *issuerName2 = "cn=physics,o=mit,c=us";
    char *issuerName3 = "cn=prof noall,o=mit,c=us";
    char *issuerName4 = "cn=testing CRL,o=test,c=us";
    PKIX_ComCRLSelParams *comCrlSelParams = NULL;
    PKIX_CRLSelector *crlSelector = NULL;
    PKIX_List *crlList = NULL;
    PKIX_UInt32 numCrl = 0;
    void *nbioContext = NULL;

    PKIX_TEST_STD_VARS();

    subTest("PKIX_PL_CollectionCertStore_Create");

    /* Create CRLSelector, link in CollectionCertStore */

    subTest("PKIX_ComCRLSelParams_AddIssuerNames");

    PKIX_TEST_EXPECT_NO_ERROR(PKIX_ComCRLSelParams_Create(&comCrlSelParams, plContext));

    testAddIssuerName(comCrlSelParams, issuerName1);
    testAddIssuerName(comCrlSelParams, issuerName2);
    testAddIssuerName(comCrlSelParams, issuerName3);
    testAddIssuerName(comCrlSelParams, issuerName4);

    subTest("PKIX_CRLSelector_SetCommonCRLSelectorParams");
    PKIX_TEST_EXPECT_NO_ERROR(PKIX_CRLSelector_Create(testCRLSelectorMatchCallback,
                                                      NULL,
                                                      &crlSelector,
                                                      plContext));

    PKIX_TEST_EXPECT_NO_ERROR(PKIX_CRLSelector_SetCommonCRLSelectorParams(crlSelector, comCrlSelParams, plContext));

    /* Create CertStore, link in CRLSelector */

    PKIX_TEST_EXPECT_NO_ERROR(PKIX_ValidateParams_GetProcessingParams(valParams, &procParams, plContext));

    subTest("PKIX_CertStore_Create");
    PKIX_TEST_EXPECT_NO_ERROR(PKIX_CertStore_Create(getCertCallback,
                                                    getCRLCallback,
                                                    getCertContinue,
                                                    getCRLContinue,
                                                    NULL,                          /* trustCallback */
                                                    (PKIX_PL_Object *)crlSelector, /* fake */
                                                    PKIX_FALSE,                    /* cacheFlag */
                                                    PKIX_TRUE,                     /* localFlag */
                                                    &certStore,
                                                    plContext));

    subTest("PKIX_ProcessingParams_AddCertStore");
    PKIX_TEST_EXPECT_NO_ERROR(PKIX_ProcessingParams_AddCertStore(procParams, certStore, plContext));

    subTest("PKIX_ProcessingParams_SetRevocationEnabled");
    PKIX_TEST_EXPECT_NO_ERROR(PKIX_ProcessingParams_SetRevocationEnabled(procParams, PKIX_TRUE, plContext));

    subTest("PKIX_CertStore_GetCRLCallback");
    PKIX_TEST_EXPECT_NO_ERROR(PKIX_CertStore_GetCRLCallback(certStore,
                                                            &crlCallback,
                                                            NULL));

    subTest("Getting CRL by CRL Callback");
    PKIX_TEST_EXPECT_NO_ERROR(crlCallback(certStore,
                                          crlSelector,
                                          &nbioContext,
                                          &crlList,
                                          plContext));

    PKIX_TEST_EXPECT_NO_ERROR(PKIX_List_GetLength(crlList,
                                                  &numCrl,
                                                  plContext));

    if (numCrl != PKIX_TEST_COLLECTIONCERTSTORE_NUM_CRLS) {
        pkixTestErrorMsg = "unexpected CRL number mismatch";
    }

cleanup:

    PKIX_TEST_DECREF_AC(crlList);
    PKIX_TEST_DECREF_AC(comCrlSelParams);
    PKIX_TEST_DECREF_AC(crlSelector);
    PKIX_TEST_DECREF_AC(procParams);
    PKIX_TEST_DECREF_AC(certStore);

    PKIX_TEST_RETURN();

    return (0);
}

/*
 * Validate Certificate Chain with Certificate Revocation List
 *      Certificate Chain is built based on input certs' sequence.
 *      CRL is fetched from the directory specified in CollectionCertStore.
 *      while CollectionCertStore is linked in CertStore Object which then
 *      linked in ProcessParam. During validation, CRLChecker will invoke
 *      the crlCallback (this test uses PKIX_PL_CollectionCertStore_GetCRL)
 *      to get CRL data for revocation check.
 *      This test set criteria in CRLSelector which is linked in
 *      CommonCRLSelectorParam. When CRL data is fetched into cache for
 *      revocation check, CRL's are filtered based on the criteria set.
 */

int
test_customcrlchecker(int argc, char *argv[])
{

    PKIX_List *chain = NULL;
    PKIX_ValidateParams *valParams = NULL;
    PKIX_ValidateResult *valResult = NULL;
    PKIX_UInt32 actualMinorVersion;
    char *certNames[PKIX_TEST_MAX_CERTS];
    PKIX_PL_Cert *certs[PKIX_TEST_MAX_CERTS];
    PKIX_VerifyNode *verifyTree = NULL;
    PKIX_PL_String *verifyString = NULL;
    PKIX_UInt32 chainLength = 0;
    PKIX_UInt32 i = 0;
    PKIX_UInt32 j = 0;
    PKIX_Boolean testValid = PKIX_TRUE;
    char *anchorName = NULL;

    PKIX_TEST_STD_VARS();

    if (argc < 5) {
        printUsage1(argv[0]);
        return (0);
    }

    startTests("CRL Checker");

    PKIX_TEST_EXPECT_NO_ERROR(
        PKIX_PL_NssContext_Create(0, PKIX_FALSE, NULL, &plContext));

    /* ENE = expect no error; EE = expect error */
    if (PORT_Strcmp(argv[2 + j], "ENE") == 0) {
        testValid = PKIX_TRUE;
    } else if (PORT_Strcmp(argv[2 + j], "EE") == 0) {
        testValid = PKIX_FALSE;
    } else {
        printUsage1(argv[0]);
        return (0);
    }

    chainLength = (argc - j) - 5;
    if (chainLength > PKIX_TEST_MAX_CERTS) {
        printUsageMax(chainLength);
    }

    for (i = 0; i < chainLength; i++) {

        certNames[i] = argv[(5 + j) + i];
        certs[i] = NULL;
    }

    dirName = argv[3 + j];

    subTest(argv[1 + j]);

    subTest("Custom-CRL-Checker - Create Cert Chain");

    chain = createCertChainPlus(dirName, certNames, certs, chainLength, plContext);

    subTest("Custom-CRL-Checker - Create Params");

    anchorName = argv[4 + j];

    valParams = createValidateParams(dirName,
                                     anchorName,
                                     NULL,
                                     NULL,
                                     NULL,
                                     PKIX_FALSE,
                                     PKIX_FALSE,
                                     PKIX_FALSE,
                                     PKIX_FALSE,
                                     chain,
                                     plContext);

    subTest("Custom-CRL-Checker - Set Processing Params for CertStore");

    testCustomCertStore(valParams);

    subTest("Custom-CRL-Checker - Validate Chain");

    if (testValid == PKIX_TRUE) {
        PKIX_TEST_EXPECT_NO_ERROR(PKIX_ValidateChain(valParams, &valResult, &verifyTree, plContext));
    } else {
        PKIX_TEST_EXPECT_ERROR(PKIX_ValidateChain(valParams, &valResult, &verifyTree, plContext));
    }

cleanup:

    PKIX_TEST_DECREF_AC(verifyString);
    PKIX_TEST_DECREF_AC(verifyTree);
    PKIX_TEST_DECREF_AC(chain);
    PKIX_TEST_DECREF_AC(valParams);
    PKIX_TEST_DECREF_AC(valResult);

    PKIX_Shutdown(plContext);

    PKIX_TEST_RETURN();

    endTests("CRL Checker");

    return (0);
}