t_x509.c

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/* crypto/asn1/t_x509.c */
/* Copyright (C) 1995-1998 Eric Young ([email protected])
 * All rights reserved.
 *
 * This package is an SSL implementation written
 * by Eric Young ([email protected]).
 * 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 ([email protected]).
 * 
 * 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 ([email protected])"
 *    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 ([email protected])"
 * 
 * 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))
            {
            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, x->sig_alg, 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_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)
        {
        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);
    }