/*

 * Copyright 2000-2016 The OpenSSL Project Authors. All Rights Reserved.

 *

 * Licensed under the OpenSSL license (the "License").  You may not use

 * this file except in compliance with the License.  You can obtain a copy

 * in the file LICENSE in the source distribution or at

 * https://www.openssl.org/source/license.html

 */

#include <openssl/bio.h>

#include <openssl/err.h>

#include <openssl/ocsp.h>

#include "ocsp_local.h"

#include "internal/cryptlib.h"

#include <openssl/pem.h>

static int ocsp_certid_print(BIO *bp, OCSP_CERTID *a, int indent)

{

    BIO_printf(bp, "%*sCertificate ID:\n", indent, "");

    indent += 2;

    BIO_printf(bp, "%*sHash Algorithm: ", indent, "");

    i2a_ASN1_OBJECT(bp, a->hashAlgorithm.algorithm);

    BIO_printf(bp, "\n%*sIssuer Name Hash: ", indent, "");

    i2a_ASN1_STRING(bp, &a->issuerNameHash, 0);

    BIO_printf(bp, "\n%*sIssuer Key Hash: ", indent, "");

    i2a_ASN1_STRING(bp, &a->issuerKeyHash, 0);

    BIO_printf(bp, "\n%*sSerial Number: ", indent, "");

    i2a_ASN1_INTEGER(bp, &a->serialNumber);

    BIO_printf(bp, "\n");

    return 1;

}

typedef struct {

    long t;

    const char *m;

} OCSP_TBLSTR;

static const char *do_table2string(long s, const OCSP_TBLSTR *ts, size_t len)

{

    size_t i;

    for (i = 0; i < len; i++, ts++)

        if (ts->t == s)

            return ts->m;

    return "(UNKNOWN)";

}

#define table2string(s, tbl) do_table2string(s, tbl, OSSL_NELEM(tbl))

const char *OCSP_response_status_str(long s)

{

    static const OCSP_TBLSTR rstat_tbl[] = {

        {OCSP_RESPONSE_STATUS_SUCCESSFUL, "successful"},

        {OCSP_RESPONSE_STATUS_MALFORMEDREQUEST, "malformedrequest"},

        {OCSP_RESPONSE_STATUS_INTERNALERROR, "internalerror"},

        {OCSP_RESPONSE_STATUS_TRYLATER, "trylater"},

        {OCSP_RESPONSE_STATUS_SIGREQUIRED, "sigrequired"},

        {OCSP_RESPONSE_STATUS_UNAUTHORIZED, "unauthorized"}

    };

    return table2string(s, rstat_tbl);

}

const char *OCSP_cert_status_str(long s)

{

    static const OCSP_TBLSTR cstat_tbl[] = {

        {V_OCSP_CERTSTATUS_GOOD, "good"},

        {V_OCSP_CERTSTATUS_REVOKED, "revoked"},

        {V_OCSP_CERTSTATUS_UNKNOWN, "unknown"}

    };

    return table2string(s, cstat_tbl);

}

const char *OCSP_crl_reason_str(long s)

{

    static const OCSP_TBLSTR reason_tbl[] = {

        {OCSP_REVOKED_STATUS_UNSPECIFIED, "unspecified"},

        {OCSP_REVOKED_STATUS_KEYCOMPROMISE, "keyCompromise"},

        {OCSP_REVOKED_STATUS_CACOMPROMISE, "cACompromise"},

        {OCSP_REVOKED_STATUS_AFFILIATIONCHANGED, "affiliationChanged"},

        {OCSP_REVOKED_STATUS_SUPERSEDED, "superseded"},

        {OCSP_REVOKED_STATUS_CESSATIONOFOPERATION, "cessationOfOperation"},

        {OCSP_REVOKED_STATUS_CERTIFICATEHOLD, "certificateHold"},

        {OCSP_REVOKED_STATUS_REMOVEFROMCRL, "removeFromCRL"}

    };

    return table2string(s, reason_tbl);

}

int OCSP_REQUEST_print(BIO *bp, OCSP_REQUEST *o, unsigned long flags)

{

    int i;

    long l;

    OCSP_CERTID *cid = NULL;

    OCSP_ONEREQ *one = NULL;

    OCSP_REQINFO *inf = &o->tbsRequest;

    OCSP_SIGNATURE *sig = o->optionalSignature;

    if (BIO_write(bp, "OCSP Request Data:\n", 19) <= 0)

        goto err;

    l = ASN1_INTEGER_get(inf->version);

    if (BIO_printf(bp, "    Version: %lu (0x%lx)", l + 1, l) <= 0)

        goto err;

    if (inf->requestorName != NULL) {

        if (BIO_write(bp, "\n    Requestor Name: ", 21) <= 0)

            goto err;

        GENERAL_NAME_print(bp, inf->requestorName);

    }

    if (BIO_write(bp, "\n    Requestor List:\n", 21) <= 0)

        goto err;

    for (i = 0; i < sk_OCSP_ONEREQ_num(inf->requestList); i++) {

        one = sk_OCSP_ONEREQ_value(inf->requestList, i);

        cid = one->reqCert;

        ocsp_certid_print(bp, cid, 8);

        if (!X509V3_extensions_print(bp,

                                     "Request Single Extensions",

                                     one->singleRequestExtensions, flags, 8))

            goto err;

    }

    if (!X509V3_extensions_print(bp, "Request Extensions",

                                 inf->requestExtensions, flags, 4))

        goto err;

    if (sig) {

        X509_signature_print(bp, &sig->signatureAlgorithm, sig->signature);

        for (i = 0; i < sk_X509_num(sig->certs); i++) {

            X509_print(bp, sk_X509_value(sig->certs, i));

            PEM_write_bio_X509(bp, sk_X509_value(sig->certs, i));

        }

    }

    return 1;

 err:

    return 0;

}

int OCSP_RESPONSE_print(BIO *bp, OCSP_RESPONSE *o, unsigned long flags)

{

    int i, ret = 0;

    long l;

    OCSP_CERTID *cid = NULL;

    OCSP_BASICRESP *br = NULL;

    OCSP_RESPID *rid = NULL;

    OCSP_RESPDATA *rd = NULL;

    OCSP_CERTSTATUS *cst = NULL;

    OCSP_REVOKEDINFO *rev = NULL;

    OCSP_SINGLERESP *single = NULL;

    OCSP_RESPBYTES *rb = o->responseBytes;

    if (BIO_puts(bp, "OCSP Response Data:\n") <= 0)

        goto err;

    l = ASN1_ENUMERATED_get(o->responseStatus);

    if (BIO_printf(bp, "    OCSP Response Status: %s (0x%lx)\n",

                   OCSP_response_status_str(l), l) <= 0)

        goto err;

    if (rb == NULL)

        return 1;

    if (BIO_puts(bp, "    Response Type: ") <= 0)

        goto err;

    if (i2a_ASN1_OBJECT(bp, rb->responseType) <= 0)

        goto err;

    if (OBJ_obj2nid(rb->responseType) != NID_id_pkix_OCSP_basic) {

        BIO_puts(bp, " (unknown response type)\n");

        return 1;

    }

    if ((br = OCSP_response_get1_basic(o)) == NULL)

        goto err;

    rd = &br->tbsResponseData;

    l = ASN1_INTEGER_get(rd->version);

    if (BIO_printf(bp, "\n    Version: %lu (0x%lx)\n", l + 1, l) <= 0)

        goto err;

    if (BIO_puts(bp, "    Responder Id: ") <= 0)

        goto err;

    rid = &rd->responderId;

    switch (rid->type) {

    case V_OCSP_RESPID_NAME:

        X509_NAME_print_ex(bp, rid->value.byName, 0, XN_FLAG_ONELINE);

        break;

    case V_OCSP_RESPID_KEY:

        i2a_ASN1_STRING(bp, rid->value.byKey, 0);

        break;

    }

    if (BIO_printf(bp, "\n    Produced At: ") <= 0)

        goto err;

    if (!ASN1_GENERALIZEDTIME_print(bp, rd->producedAt))

        goto err;

    if (BIO_printf(bp, "\n    Responses:\n") <= 0)

        goto err;

    for (i = 0; i < sk_OCSP_SINGLERESP_num(rd->responses); i++) {

        if (!sk_OCSP_SINGLERESP_value(rd->responses, i))

            continue;

        single = sk_OCSP_SINGLERESP_value(rd->responses, i);

        cid = single->certId;

        if (ocsp_certid_print(bp, cid, 4) <= 0)

            goto err;

        cst = single->certStatus;

        if (BIO_printf(bp, "    Cert Status: %s",

                       OCSP_cert_status_str(cst->type)) <= 0)

            goto err;

        if (cst->type == V_OCSP_CERTSTATUS_REVOKED) {

            rev = cst->value.revoked;

            if (BIO_printf(bp, "\n    Revocation Time: ") <= 0)

                goto err;

            if (!ASN1_GENERALIZEDTIME_print(bp, rev->revocationTime))

                goto err;

            if (rev->revocationReason) {

                l = ASN1_ENUMERATED_get(rev->revocationReason);

                if (BIO_printf(bp,

                               "\n    Revocation Reason: %s (0x%lx)",

                               OCSP_crl_reason_str(l), l) <= 0)

                    goto err;

            }

        }

        if (BIO_printf(bp, "\n    This Update: ") <= 0)

            goto err;

        if (!ASN1_GENERALIZEDTIME_print(bp, single->thisUpdate))

            goto err;

        if (single->nextUpdate) {

            if (BIO_printf(bp, "\n    Next Update: ") <= 0)

                goto err;

            if (!ASN1_GENERALIZEDTIME_print(bp, single->nextUpdate))

                goto err;

        }

        if (BIO_write(bp, "\n", 1) <= 0)

            goto err;

        if (!X509V3_extensions_print(bp,

                                     "Response Single Extensions",

                                     single->singleExtensions, flags, 8))

            goto err;

        if (BIO_write(bp, "\n", 1) <= 0)

            goto err;

    }

    if (!X509V3_extensions_print(bp, "Response Extensions",

                                 rd->responseExtensions, flags, 4))

        goto err;

    if (X509_signature_print(bp, &br->signatureAlgorithm, br->signature) <= 0)

        goto err;

    for (i = 0; i < sk_X509_num(br->certs); i++) {

        X509_print(bp, sk_X509_value(br->certs, i));

        PEM_write_bio_X509(bp, sk_X509_value(br->certs, i));

    }

    ret = 1;

 err:

    OCSP_BASICRESP_free(br);

    return ret;

}