/* 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_buildchain.c
 *
 * Test BuildChain function
 *
 */

/* #define debuggingWithoutRevocation */

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

#define LDAP_PORT 389
static PKIX_Boolean usebind = PKIX_FALSE;
static PKIX_Boolean useLDAP = PKIX_FALSE;
static char buf[PR_NETDB_BUF_SIZE];
static char *serverName = NULL;
static char *sepPtr = NULL;
static PRNetAddr netAddr;
static PRHostEnt hostent;
static PKIX_UInt32 portNum = 0;
static PRIntn hostenum = 0;
static PRStatus prstatus = PR_FAILURE;
static void *ipaddr = NULL;

static void *plContext = NULL;

static void
printUsage(void)
{
    (void)printf("\nUSAGE:\ttest_buildchain [-arenas] [usebind] "
                 "servername[:port] <testName> [ENE|EE]\n"
                 "\t <certStoreDirectory> <targetCert>"
                 " <intermediate Certs...> <trustedCert>\n\n");
    (void)printf("Builds a chain of certificates from <targetCert> to <trustedCert>\n"
                 "using the certs and CRLs in <certStoreDirectory>. "
                 "servername[:port] gives\n"
                 "the address of an LDAP server. If port is not"
                 " specified, port 389 is used. \"-\" means no LDAP server.\n"
                 "If ENE is specified, then an Error is Not Expected. "
                 "EE indicates an Error is Expected.\n");
}

static PKIX_Error *
createLdapCertStore(
    char *hostname,
    PRIntervalTime timeout,
    PKIX_CertStore **pLdapCertStore,
    void *plContext)
{
    PRIntn backlog = 0;

    char *bindname = "";
    char *auth = "";

    LDAPBindAPI bindAPI;
    LDAPBindAPI *bindPtr = NULL;
    PKIX_PL_LdapDefaultClient *ldapClient = NULL;
    PKIX_CertStore *ldapCertStore = NULL;

    PKIX_TEST_STD_VARS();

    if (usebind) {
        bindPtr = &bindAPI;
        bindAPI.selector = SIMPLE_AUTH;
        bindAPI.chooser.simple.bindName = bindname;
        bindAPI.chooser.simple.authentication = auth;
    }

    PKIX_TEST_EXPECT_NO_ERROR(PKIX_PL_LdapDefaultClient_CreateByName(hostname, timeout, bindPtr, &ldapClient, plContext));

    PKIX_TEST_EXPECT_NO_ERROR(PKIX_PL_LdapCertStore_Create((PKIX_PL_LdapClient *)ldapClient,
                                                           &ldapCertStore,
                                                           plContext));

    *pLdapCertStore = ldapCertStore;
cleanup:

    PKIX_TEST_DECREF_AC(ldapClient);

    PKIX_TEST_RETURN();

    return (pkixTestErrorResult);
}

int
test_buildchain(int argc, char *argv[])
{
    PKIX_BuildResult *buildResult = NULL;
    PKIX_ComCertSelParams *certSelParams = NULL;
    PKIX_CertSelector *certSelector = NULL;
    PKIX_TrustAnchor *anchor = NULL;
    PKIX_PL_PublicKey *trustedPubKey = NULL;
    PKIX_List *anchors = NULL;
    PKIX_List *certs = NULL;
    PKIX_RevocationChecker *revChecker = NULL;
    PKIX_PL_Cert *cert = NULL;
    PKIX_ProcessingParams *procParams = NULL;
    char *dirName = NULL;
    PKIX_PL_String *dirNameString = NULL;
    PKIX_PL_Cert *trustedCert = NULL;
    PKIX_PL_Cert *targetCert = NULL;
    PKIX_UInt32 actualMinorVersion = 0;
    PKIX_UInt32 numCerts = 0;
    PKIX_UInt32 i = 0;
    PKIX_UInt32 j = 0;
    PKIX_UInt32 k = 0;
    PKIX_CertStore *ldapCertStore = NULL;
    PRIntervalTime timeout = PR_INTERVAL_NO_TIMEOUT; /* blocking */
    /* PRIntervalTime timeout = PR_INTERVAL_NO_WAIT; =0 for non-blocking */
    PKIX_CertStore *certStore = NULL;
    PKIX_List *certStores = NULL;
    PKIX_List *revCheckers = NULL;
    char *asciiResult = NULL;
    PKIX_Boolean result = PKIX_FALSE;
    PKIX_Boolean testValid = PKIX_TRUE;
    PKIX_List *expectedCerts = NULL;
    PKIX_PL_Cert *dirCert = NULL;
    PKIX_VerifyNode *verifyTree = NULL;
    PKIX_PL_String *verifyString = NULL;
    PKIX_PL_String *actualCertsString = NULL;
    PKIX_PL_String *expectedCertsString = NULL;
    void *state = NULL;
    char *actualCertsAscii = NULL;
    char *expectedCertsAscii = NULL;
    PRPollDesc *pollDesc = NULL;

    PKIX_TEST_STD_VARS();

    if (argc < 5) {
        printUsage();
        return (0);
    }

    startTests("BuildChain");

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

    /*
         * arguments:
         * [optional] -arenas
         * [optional] usebind
         *            servername or servername:port ( - for no server)
         *            testname
         *            EE or ENE
         *            cert directory
         *            target cert (end entity)
         *            intermediate certs
         *            trust anchor
         */

    /* optional argument "usebind" for Ldap CertStore */
    if (argv[j + 1]) {
        if (PORT_Strcmp(argv[j + 1], "usebind") == 0) {
            usebind = PKIX_TRUE;
            j++;
        }
    }

    if (PORT_Strcmp(argv[++j], "-") == 0) {
        useLDAP = PKIX_FALSE;
    } else {
        serverName = argv[j];
        useLDAP = PKIX_TRUE;
    }

    subTest(argv[++j]);

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

    dirName = argv[++j];

    PKIX_TEST_EXPECT_NO_ERROR(PKIX_List_Create(&expectedCerts, plContext));

    for (k = ++j; k < (PKIX_UInt32)argc; k++) {

        dirCert = createCert(dirName, argv[k], plContext);

        if (k == (PKIX_UInt32)(argc - 1)) {
            PKIX_TEST_EXPECT_NO_ERROR(PKIX_PL_Object_IncRef((PKIX_PL_Object *)dirCert, plContext));
            trustedCert = dirCert;
        } else {

            PKIX_TEST_EXPECT_NO_ERROR(PKIX_List_AppendItem(expectedCerts,
                                                           (PKIX_PL_Object *)dirCert,
                                                           plContext));

            if (k == j) {
                PKIX_TEST_EXPECT_NO_ERROR(PKIX_PL_Object_IncRef((PKIX_PL_Object *)dirCert, plContext));
                targetCert = dirCert;
            }
        }

        PKIX_TEST_DECREF_BC(dirCert);
    }

    /* create processing params with list of trust anchors */

    PKIX_TEST_EXPECT_NO_ERROR(PKIX_TrustAnchor_CreateWithCert(trustedCert, &anchor, plContext));
    PKIX_TEST_EXPECT_NO_ERROR(PKIX_List_Create(&anchors, plContext));
    PKIX_TEST_EXPECT_NO_ERROR(PKIX_List_AppendItem(anchors, (PKIX_PL_Object *)anchor, plContext));
    PKIX_TEST_EXPECT_NO_ERROR(PKIX_ProcessingParams_Create(anchors, &procParams, plContext));

    /* create CertSelector with target certificate in params */

    PKIX_TEST_EXPECT_NO_ERROR(PKIX_ComCertSelParams_Create(&certSelParams, plContext));

    PKIX_TEST_EXPECT_NO_ERROR(PKIX_ComCertSelParams_SetCertificate(certSelParams, targetCert, plContext));

    PKIX_TEST_EXPECT_NO_ERROR(PKIX_CertSelector_Create(NULL, NULL, &certSelector, plContext));

    PKIX_TEST_EXPECT_NO_ERROR(PKIX_CertSelector_SetCommonCertSelectorParams(certSelector, certSelParams, plContext));

    PKIX_TEST_EXPECT_NO_ERROR(PKIX_ProcessingParams_SetTargetCertConstraints(procParams, certSelector, plContext));

    /* create CertStores */

    PKIX_TEST_EXPECT_NO_ERROR(PKIX_PL_String_Create(PKIX_ESCASCII, dirName, 0, &dirNameString, plContext));

    PKIX_TEST_EXPECT_NO_ERROR(PKIX_List_Create(&certStores, plContext));

    if (useLDAP == PKIX_TRUE) {
        PKIX_TEST_EXPECT_NO_ERROR(createLdapCertStore(serverName, timeout, &ldapCertStore, plContext));

        PKIX_TEST_EXPECT_NO_ERROR(PKIX_List_AppendItem(certStores,
                                                       (PKIX_PL_Object *)ldapCertStore,
                                                       plContext));
    } else {
        PKIX_TEST_EXPECT_NO_ERROR(PKIX_PL_CollectionCertStore_Create(dirNameString, &certStore, plContext));
        PKIX_TEST_EXPECT_NO_ERROR(PKIX_List_AppendItem(certStores, (PKIX_PL_Object *)certStore, plContext));
    }

    PKIX_TEST_EXPECT_NO_ERROR(PKIX_ProcessingParams_SetCertStores(procParams, certStores, plContext));

    PKIX_TEST_EXPECT_NO_ERROR(PKIX_List_Create(&revCheckers, plContext));

    PKIX_TEST_EXPECT_NO_ERROR(PKIX_PL_Cert_GetSubjectPublicKey(trustedCert, &trustedPubKey, plContext));

    PKIX_TEST_EXPECT_NO_ERROR(PKIX_List_GetLength(expectedCerts, &numCerts, plContext));

    PKIX_TEST_EXPECT_NO_ERROR(pkix_DefaultRevChecker_Initialize(certStores,
                                                                NULL, /* testDate, may be NULL */
                                                                trustedPubKey,
                                                                numCerts,
                                                                &revChecker,
                                                                plContext));

    PKIX_TEST_EXPECT_NO_ERROR(PKIX_List_AppendItem(revCheckers, (PKIX_PL_Object *)revChecker, plContext));

    PKIX_TEST_EXPECT_NO_ERROR(PKIX_ProcessingParams_SetRevocationCheckers(procParams, revCheckers, plContext));

#ifdef debuggingWithoutRevocation
    PKIX_TEST_EXPECT_NO_ERROR(PKIX_ProcessingParams_SetRevocationEnabled(procParams, PKIX_FALSE, plContext));
#endif

    /* build cert chain using processing params and return buildResult */

    pkixTestErrorResult = PKIX_BuildChain(procParams,
                                          (void **)&pollDesc,
                                          &state,
                                          &buildResult,
                                          &verifyTree,
                                          plContext);

    while (pollDesc != NULL) {

        if (PR_Poll(pollDesc, 1, 0) < 0) {
            testError("PR_Poll failed");
        }

        pkixTestErrorResult = PKIX_BuildChain(procParams,
                                              (void **)&pollDesc,
                                              &state,
                                              &buildResult,
                                              &verifyTree,
                                              plContext);
    }

    if (pkixTestErrorResult) {
        if (testValid == PKIX_FALSE) { /* EE */
            (void)printf("EXPECTED ERROR RECEIVED!\n");
        } else { /* ENE */
            testError("UNEXPECTED ERROR RECEIVED");
        }
    } else {
        if (testValid == PKIX_TRUE) { /* ENE */
            (void)printf("EXPECTED NON-ERROR RECEIVED!\n");
        } else { /* EE */
            (void)printf("UNEXPECTED NON-ERROR RECEIVED!\n");
        }
    }

    subTest("Displaying VerifyNode objects");

    if (verifyTree == NULL) {
        PKIX_TEST_EXPECT_NO_ERROR(PKIX_PL_String_Create(PKIX_ESCASCII, "(null)", 0, &verifyString, plContext));
    } else {
        PKIX_TEST_EXPECT_NO_ERROR(PKIX_PL_Object_ToString((PKIX_PL_Object *)verifyTree, &verifyString, plContext));
    }

    (void)printf("verifyTree is\n%s\n", verifyString->escAsciiString);

    if (pkixTestErrorResult) {
        PKIX_TEST_DECREF_BC(pkixTestErrorResult);
        goto cleanup;
    }

    if (buildResult) {

        PKIX_TEST_EXPECT_NO_ERROR(PKIX_BuildResult_GetCertChain(buildResult, &certs, plContext));

        PKIX_TEST_EXPECT_NO_ERROR(PKIX_List_GetLength(certs, &numCerts, plContext));

        printf("\n");

        for (i = 0; i < numCerts; i++) {
            PKIX_TEST_EXPECT_NO_ERROR(PKIX_List_GetItem(certs,
                                                        i,
                                                        (PKIX_PL_Object **)&cert,
                                                        plContext));

            asciiResult = PKIX_Cert2ASCII(cert);

            printf("CERT[%d]:\n%s\n", i, asciiResult);

            /* PKIX_Cert2ASCII used PKIX_PL_Malloc(...,,NULL) */
            PKIX_TEST_EXPECT_NO_ERROR(PKIX_PL_Free(asciiResult, NULL));
            asciiResult = NULL;

            PKIX_TEST_DECREF_BC(cert);
        }

        PKIX_TEST_EXPECT_NO_ERROR(PKIX_PL_Object_Equals((PKIX_PL_Object *)certs,
                                                        (PKIX_PL_Object *)expectedCerts,
                                                        &result,
                                                        plContext));

        if (!result) {
            testError("BUILT CERTCHAIN IS "
                      "NOT THE ONE THAT WAS EXPECTED");

            PKIX_TEST_EXPECT_NO_ERROR(PKIX_PL_Object_ToString((PKIX_PL_Object *)certs,
                                                              &actualCertsString,
                                                              plContext));

            actualCertsAscii = PKIX_String2ASCII(actualCertsString, plContext);
            if (actualCertsAscii == NULL) {
                pkixTestErrorMsg = "PKIX_String2ASCII Failed";
                goto cleanup;
            }

            PKIX_TEST_EXPECT_NO_ERROR(PKIX_PL_Object_ToString((PKIX_PL_Object *)expectedCerts,
                                                              &expectedCertsString,
                                                              plContext));

            expectedCertsAscii = PKIX_String2ASCII(expectedCertsString, plContext);
            if (expectedCertsAscii == NULL) {
                pkixTestErrorMsg = "PKIX_String2ASCII Failed";
                goto cleanup;
            }

            (void)printf("Actual value:\t%s\n", actualCertsAscii);
            (void)printf("Expected value:\t%s\n",
                         expectedCertsAscii);
        }
    }

cleanup:
    PKIX_TEST_DECREF_AC(verifyString);
    PKIX_TEST_DECREF_AC(verifyTree);

    PKIX_PL_Free(asciiResult, NULL);
    PKIX_PL_Free(actualCertsAscii, plContext);
    PKIX_PL_Free(expectedCertsAscii, plContext);

    PKIX_TEST_DECREF_AC(state);
    PKIX_TEST_DECREF_AC(actualCertsString);
    PKIX_TEST_DECREF_AC(expectedCertsString);
    PKIX_TEST_DECREF_AC(expectedCerts);
    PKIX_TEST_DECREF_AC(buildResult);
    PKIX_TEST_DECREF_AC(procParams);
    PKIX_TEST_DECREF_AC(certStores);
    PKIX_TEST_DECREF_AC(revCheckers);
    PKIX_TEST_DECREF_AC(revChecker);
    PKIX_TEST_DECREF_AC(ldapCertStore);
    PKIX_TEST_DECREF_AC(certStore);
    PKIX_TEST_DECREF_AC(dirNameString);
    PKIX_TEST_DECREF_AC(certSelParams);
    PKIX_TEST_DECREF_AC(certSelector);
    PKIX_TEST_DECREF_AC(anchors);
    PKIX_TEST_DECREF_AC(anchor);
    PKIX_TEST_DECREF_AC(trustedCert);
    PKIX_TEST_DECREF_AC(trustedPubKey);

    PKIX_TEST_DECREF_AC(certs);
    PKIX_TEST_DECREF_AC(cert);
    PKIX_TEST_DECREF_AC(targetCert);

    PKIX_TEST_RETURN();

    PKIX_Shutdown(plContext);

    endTests("BuildChain");

    return (0);
}