/* crypto/asn1/t_x509.c */

/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)

 * All rights reserved.

 *

 * This package is an SSL implementation written

 * by Eric Young (eay@cryptsoft.com).

 * The implementation was written so as to conform with Netscapes SSL.

 *

 * This library is free for commercial and non-commercial use as long as

 * the following conditions are aheared to.  The following conditions

 * apply to all code found in this distribution, be it the RC4, RSA,

 * lhash, DES, etc., code; not just the SSL code.  The SSL documentation

 * included with this distribution is covered by the same copyright terms

 * except that the holder is Tim Hudson (tjh@cryptsoft.com).

 *

 * Copyright remains Eric Young's, and as such any Copyright notices in

 * the code are not to be removed.

 * If this package is used in a product, Eric Young should be given attribution

 * as the author of the parts of the library used.

 * This can be in the form of a textual message at program startup or

 * in documentation (online or textual) provided with the package.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the copyright

 *    notice, this list of conditions and the following disclaimer.

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in the

 *    documentation and/or other materials provided with the distribution.

 * 3. All advertising materials mentioning features or use of this software

 *    must display the following acknowledgement:

 *    "This product includes cryptographic software written by

 *     Eric Young (eay@cryptsoft.com)"

 *    The word 'cryptographic' can be left out if the rouines from the library

 *    being used are not cryptographic related :-).

 * 4. If you include any Windows specific code (or a derivative thereof) from

 *    the apps directory (application code) you must include an acknowledgement:

 *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"

 *

 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``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 DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE

 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY

 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

 * SUCH DAMAGE.

 *

 * The licence and distribution terms for any publically available version or

 * derivative of this code cannot be changed.  i.e. this code cannot simply be

 * copied and put under another distribution licence

 * [including the GNU Public Licence.]

 */

#include <stdio.h>

#include "cryptlib.h"

#include <openssl/buffer.h>

#include <openssl/bn.h>

#ifndef OPENSSL_NO_RSA

# include <openssl/rsa.h>

#endif

#ifndef OPENSSL_NO_DSA

# include <openssl/dsa.h>

#endif

#ifndef OPENSSL_NO_EC

# include <openssl/ec.h>

#endif

#include <openssl/objects.h>

#include <openssl/x509.h>

#include <openssl/x509v3.h>

#include "asn1_locl.h"

#ifndef OPENSSL_NO_FP_API

int X509_print_fp(FILE *fp, X509 *x)

{

    return X509_print_ex_fp(fp, x, XN_FLAG_COMPAT, X509_FLAG_COMPAT);

}

int X509_print_ex_fp(FILE *fp, X509 *x, unsigned long nmflag,

                     unsigned long cflag)

{

    BIO *b;

    int ret;

    if ((b = BIO_new(BIO_s_file())) == NULL) {

        X509err(X509_F_X509_PRINT_EX_FP, ERR_R_BUF_LIB);

        return (0);

    }

    BIO_set_fp(b, fp, BIO_NOCLOSE);

    ret = X509_print_ex(b, x, nmflag, cflag);

    BIO_free(b);

    return (ret);

}

#endif

int X509_print(BIO *bp, X509 *x)

{

    return X509_print_ex(bp, x, XN_FLAG_COMPAT, X509_FLAG_COMPAT);

}

int X509_print_ex(BIO *bp, X509 *x, unsigned long nmflags,

                  unsigned long cflag)

{

    long l;

    int ret = 0, i;

    char *m = NULL, mlch = ' ';

    int nmindent = 0;

    X509_CINF *ci;

    ASN1_INTEGER *bs;

    EVP_PKEY *pkey = NULL;

    const char *neg;

    if ((nmflags & XN_FLAG_SEP_MASK) == XN_FLAG_SEP_MULTILINE) {

        mlch = '\n';

        nmindent = 12;

    }

    if (nmflags == X509_FLAG_COMPAT)

        nmindent = 16;

    ci = x->cert_info;

    if (!(cflag & X509_FLAG_NO_HEADER)) {

        if (BIO_write(bp, "Certificate:\n", 13) <= 0)

            goto err;

        if (BIO_write(bp, "    Data:\n", 10) <= 0)

            goto err;

    }

    if (!(cflag & X509_FLAG_NO_VERSION)) {

        l = X509_get_version(x);

        if (BIO_printf(bp, "%8sVersion: %lu (0x%lx)\n", "", l + 1, l) <= 0)

            goto err;

    }

    if (!(cflag & X509_FLAG_NO_SERIAL)) {

        if (BIO_write(bp, "        Serial Number:", 22) <= 0)

            goto err;

        bs = X509_get_serialNumber(x);

        if (bs->length < (int)sizeof(long)

            || (bs->length == sizeof(long) && (bs->data[0] & 0x80) == 0)) {

            l = ASN1_INTEGER_get(bs);

            if (bs->type == V_ASN1_NEG_INTEGER) {

                l = -l;

                neg = "-";

            } else

                neg = "";

            if (BIO_printf(bp, " %s%lu (%s0x%lx)\n", neg, l, neg, l) <= 0)

                goto err;

        } else {

            neg = (bs->type == V_ASN1_NEG_INTEGER) ? " (Negative)" : "";

            if (BIO_printf(bp, "\n%12s%s", "", neg) <= 0)

                goto err;

            for (i = 0; i < bs->length; i++) {

                if (BIO_printf(bp, "%02x%c", bs->data[i],

                               ((i + 1 == bs->length) ? '\n' : ':')) <= 0)

                    goto err;

            }

        }

    }

    if (!(cflag & X509_FLAG_NO_SIGNAME)) {

        if (X509_signature_print(bp, ci->signature, NULL) <= 0)

            goto err;

#if 0

        if (BIO_printf(bp, "%8sSignature Algorithm: ", "") <= 0)

            goto err;

        if (i2a_ASN1_OBJECT(bp, ci->signature->algorithm) <= 0)

            goto err;

        if (BIO_puts(bp, "\n") <= 0)

            goto err;

#endif

    }

    if (!(cflag & X509_FLAG_NO_ISSUER)) {

        if (BIO_printf(bp, "        Issuer:%c", mlch) <= 0)

            goto err;

        if (X509_NAME_print_ex(bp, X509_get_issuer_name(x), nmindent, nmflags)

            < 0)

            goto err;

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

            goto err;

    }

    if (!(cflag & X509_FLAG_NO_VALIDITY)) {

        if (BIO_write(bp, "        Validity\n", 17) <= 0)

            goto err;

        if (BIO_write(bp, "            Not Before: ", 24) <= 0)

            goto err;

        if (!ASN1_TIME_print(bp, X509_get_notBefore(x)))

            goto err;

        if (BIO_write(bp, "\n            Not After : ", 25) <= 0)

            goto err;

        if (!ASN1_TIME_print(bp, X509_get_notAfter(x)))

            goto err;

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

            goto err;

    }

    if (!(cflag & X509_FLAG_NO_SUBJECT)) {

        if (BIO_printf(bp, "        Subject:%c", mlch) <= 0)

            goto err;

        if (X509_NAME_print_ex

            (bp, X509_get_subject_name(x), nmindent, nmflags) < 0)

            goto err;

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

            goto err;

    }

    if (!(cflag & X509_FLAG_NO_PUBKEY)) {

        if (BIO_write(bp, "        Subject Public Key Info:\n", 33) <= 0)

            goto err;

        if (BIO_printf(bp, "%12sPublic Key Algorithm: ", "") <= 0)

            goto err;

        if (i2a_ASN1_OBJECT(bp, ci->key->algor->algorithm) <= 0)

            goto err;

        if (BIO_puts(bp, "\n") <= 0)

            goto err;

        pkey = X509_get_pubkey(x);

        if (pkey == NULL) {

            BIO_printf(bp, "%12sUnable to load Public Key\n", "");

            ERR_print_errors(bp);

        } else {

            EVP_PKEY_print_public(bp, pkey, 16, NULL);

            EVP_PKEY_free(pkey);

        }

    }

    if (!(cflag & X509_FLAG_NO_IDS)) {

        if (ci->issuerUID) {

            if (BIO_printf(bp, "%8sIssuer Unique ID: ", "") <= 0)

                goto err;

            if (!X509_signature_dump(bp, ci->issuerUID, 12))

                goto err;

        }

        if (ci->subjectUID) {

            if (BIO_printf(bp, "%8sSubject Unique ID: ", "") <= 0)

                goto err;

            if (!X509_signature_dump(bp, ci->subjectUID, 12))

                goto err;

        }

    }

    if (!(cflag & X509_FLAG_NO_EXTENSIONS))

        X509V3_extensions_print(bp, "X509v3 extensions",

                                ci->extensions, cflag, 8);

    if (!(cflag & X509_FLAG_NO_SIGDUMP)) {

        if (X509_signature_print(bp, x->sig_alg, x->signature) <= 0)

            goto err;

    }

    if (!(cflag & X509_FLAG_NO_AUX)) {

        if (!X509_CERT_AUX_print(bp, x->aux, 0))

            goto err;

    }

    ret = 1;

 err:

    if (m != NULL)

        OPENSSL_free(m);

    return (ret);

}

int X509_ocspid_print(BIO *bp, X509 *x)

{

    unsigned char *der = NULL;

    unsigned char *dertmp;

    int derlen;

    int i;

    unsigned char SHA1md[SHA_DIGEST_LENGTH];

    /*

     * display the hash of the subject as it would appear in OCSP requests

     */

    if (BIO_printf(bp, "        Subject OCSP hash: ") <= 0)

        goto err;

    derlen = i2d_X509_NAME(x->cert_info->subject, NULL);

    if ((der = dertmp = (unsigned char *)OPENSSL_malloc(derlen)) == NULL)

        goto err;

    i2d_X509_NAME(x->cert_info->subject, &dertmp);

    if (!EVP_Digest(der, derlen, SHA1md, NULL, EVP_sha1(), NULL))

        goto err;

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

        if (BIO_printf(bp, "%02X", SHA1md[i]) <= 0)

            goto err;

    }

    OPENSSL_free(der);

    der = NULL;

    /*

     * display the hash of the public key as it would appear in OCSP requests

     */

    if (BIO_printf(bp, "\n        Public key OCSP hash: ") <= 0)

        goto err;

    if (!EVP_Digest(x->cert_info->key->public_key->data,

                    x->cert_info->key->public_key->length,

                    SHA1md, NULL, EVP_sha1(), NULL))

        goto err;

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

        if (BIO_printf(bp, "%02X", SHA1md[i]) <= 0)

            goto err;

    }

    BIO_printf(bp, "\n");

    return (1);

 err:

    if (der != NULL)

        OPENSSL_free(der);

    return (0);

}

int X509_signature_dump(BIO *bp, const ASN1_STRING *sig, int indent)

{

    const unsigned char *s;

    int i, n;

    n = sig->length;

    s = sig->data;

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

        if ((i % 18) == 0) {

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

                return 0;

            if (BIO_indent(bp, indent, indent) <= 0)

                return 0;

        }

        if (BIO_printf(bp, "%02x%s", s[i], ((i + 1) == n) ? "" : ":") <= 0)

            return 0;

    }

    if (BIO_write(bp, "\n", 1) != 1)

        return 0;

    return 1;

}

int X509_signature_print(BIO *bp, X509_ALGOR *sigalg, ASN1_STRING *sig)

{

    int sig_nid;

    if (BIO_puts(bp, "    Signature Algorithm: ") <= 0)

        return 0;

    if (i2a_ASN1_OBJECT(bp, sigalg->algorithm) <= 0)

        return 0;

    sig_nid = OBJ_obj2nid(sigalg->algorithm);

    if (sig_nid != NID_undef) {

        int pkey_nid, dig_nid;

        const EVP_PKEY_ASN1_METHOD *ameth;

        if (OBJ_find_sigid_algs(sig_nid, &dig_nid, &pkey_nid)) {

            ameth = EVP_PKEY_asn1_find(NULL, pkey_nid);

            if (ameth && ameth->sig_print)

                return ameth->sig_print(bp, sigalg, sig, 9, 0);

        }

    }

    if (sig)

        return X509_signature_dump(bp, sig, 9);

    else if (BIO_puts(bp, "\n") <= 0)

        return 0;

    return 1;

}

int ASN1_STRING_print(BIO *bp, const ASN1_STRING *v)

{

    int i, n;

    char buf[80];

    const char *p;

    if (v == NULL)

        return (0);

    n = 0;

    p = (const char *)v->data;

    for (i = 0; i < v->length; i++) {

        if ((p[i] > '~') || ((p[i] < ' ') &&

                             (p[i] != '\n') && (p[i] != '\r')))

            buf[n] = '.';

        else

            buf[n] = p[i];

        n++;

        if (n >= 80) {

            if (BIO_write(bp, buf, n) <= 0)

                return (0);

            n = 0;

        }

    }

    if (n > 0)

        if (BIO_write(bp, buf, n) <= 0)

            return (0);

    return (1);

}

int ASN1_TIME_print(BIO *bp, const ASN1_TIME *tm)

{

    if (tm->type == V_ASN1_UTCTIME)

        return ASN1_UTCTIME_print(bp, tm);

    if (tm->type == V_ASN1_GENERALIZEDTIME)

        return ASN1_GENERALIZEDTIME_print(bp, tm);

    BIO_write(bp, "Bad time value", 14);

    return (0);

}

static const char *mon[12] = {

    "Jan", "Feb", "Mar", "Apr", "May", "Jun",

    "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"

};

int ASN1_GENERALIZEDTIME_print(BIO *bp, const ASN1_GENERALIZEDTIME *tm)

{

    char *v;

    int gmt = 0;

    int i;

    int y = 0, M = 0, d = 0, h = 0, m = 0, s = 0;

    char *f = NULL;

    int f_len = 0;

    i = tm->length;

    v = (char *)tm->data;

    if (i < 12)

        goto err;

    if (v[i - 1] == 'Z')

        gmt = 1;

    for (i = 0; i < 12; i++)

        if ((v[i] > '9') || (v[i] < '0'))

            goto err;

    y = (v[0] - '0') * 1000 + (v[1] - '0') * 100

        + (v[2] - '0') * 10 + (v[3] - '0');

    M = (v[4] - '0') * 10 + (v[5] - '0');

    if ((M > 12) || (M < 1))

        goto err;

    d = (v[6] - '0') * 10 + (v[7] - '0');

    h = (v[8] - '0') * 10 + (v[9] - '0');

    m = (v[10] - '0') * 10 + (v[11] - '0');

    if (tm->length >= 14 &&

        (v[12] >= '0') && (v[12] <= '9') &&

        (v[13] >= '0') && (v[13] <= '9')) {

        s = (v[12] - '0') * 10 + (v[13] - '0');

        /* Check for fractions of seconds. */

        if (tm->length >= 15 && v[14] == '.') {

            int l = tm->length;

            f = &v[14];         /* The decimal point. */

            f_len = 1;

            while (14 + f_len < l && f[f_len] >= '0' && f[f_len] <= '9')

                ++f_len;

        }

    }

    if (BIO_printf(bp, "%s %2d %02d:%02d:%02d%.*s %d%s",

                   mon[M - 1], d, h, m, s, f_len, f, y,

                   (gmt) ? " GMT" : "") <= 0)

        return (0);

    else

        return (1);

 err:

    BIO_write(bp, "Bad time value", 14);

    return (0);

}

int ASN1_UTCTIME_print(BIO *bp, const ASN1_UTCTIME *tm)

{

    const char *v;

    int gmt = 0;

    int i;

    int y = 0, M = 0, d = 0, h = 0, m = 0, s = 0;

    i = tm->length;

    v = (const char *)tm->data;

    if (i < 10)

        goto err;

    if (v[i - 1] == 'Z')

        gmt = 1;

    for (i = 0; i < 10; i++)

        if ((v[i] > '9') || (v[i] < '0'))

            goto err;

    y = (v[0] - '0') * 10 + (v[1] - '0');

    if (y < 50)

        y += 100;

    M = (v[2] - '0') * 10 + (v[3] - '0');

    if ((M > 12) || (M < 1))

        goto err;

    d = (v[4] - '0') * 10 + (v[5] - '0');

    h = (v[6] - '0') * 10 + (v[7] - '0');

    m = (v[8] - '0') * 10 + (v[9] - '0');

    if (tm->length >= 12 &&

        (v[10] >= '0') && (v[10] <= '9') && (v[11] >= '0') && (v[11] <= '9'))

        s = (v[10] - '0') * 10 + (v[11] - '0');

    if (BIO_printf(bp, "%s %2d %02d:%02d:%02d %d%s",

                   mon[M - 1], d, h, m, s, y + 1900,

                   (gmt) ? " GMT" : "") <= 0)

        return (0);

    else

        return (1);

 err:

    BIO_write(bp, "Bad time value", 14);

    return (0);

}

int X509_NAME_print(BIO *bp, X509_NAME *name, int obase)

{

    char *s, *c, *b;

    int ret = 0, l, i;

    l = 80 - 2 - obase;

    b = X509_NAME_oneline(name, NULL, 0);

    if (!b)

        return 0;

    if (!*b) {

        OPENSSL_free(b);

        return 1;

    }

    s = b + 1;                  /* skip the first slash */

    c = s;

    for (;;) {

#ifndef CHARSET_EBCDIC

        if (((*s == '/') &&

             ((s[1] >= 'A') && (s[1] <= 'Z') && ((s[2] == '=') ||

                                                 ((s[2] >= 'A')

                                                  && (s[2] <= 'Z')

                                                  && (s[3] == '='))

              ))) || (*s == '\0'))

#else

        if (((*s == '/') &&

             (isupper(s[1]) && ((s[2] == '=') ||

                                (isupper(s[2]) && (s[3] == '='))

              ))) || (*s == '\0'))

#endif

        {

            i = s - c;

            if (BIO_write(bp, c, i) != i)

                goto err;

            c = s + 1;          /* skip following slash */

            if (*s != '\0') {

                if (BIO_write(bp, ", ", 2) != 2)

                    goto err;

            }

            l--;

        }

        if (*s == '\0')

            break;

        s++;

        l--;

    }

    ret = 1;

    if (0) {

 err:

        X509err(X509_F_X509_NAME_PRINT, ERR_R_BUF_LIB);

    }

    OPENSSL_free(b);

    return (ret);

}