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			379 lines
		
	
	
	
		
			11 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
			
		
		
	
	
			379 lines
		
	
	
	
		
			11 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
/*
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 * Copyright 1995-2021 The OpenSSL Project Authors. All Rights Reserved.
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 *
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 * Licensed under the OpenSSL license (the "License").  You may not use
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 * this file except in compliance with the License.  You can obtain a copy
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 * in the file LICENSE in the source distribution or at
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 * https://www.openssl.org/source/license.html
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 */
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#include <stdio.h>
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#include "internal/cryptlib.h"
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#include <openssl/buffer.h>
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#include <openssl/bn.h>
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#include <openssl/objects.h>
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#include <openssl/x509.h>
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#include <openssl/x509v3.h>
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#include "crypto/asn1.h"
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#ifndef OPENSSL_NO_STDIO
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int X509_print_fp(FILE *fp, X509 *x)
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{
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    return X509_print_ex_fp(fp, x, XN_FLAG_COMPAT, X509_FLAG_COMPAT);
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}
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int X509_print_ex_fp(FILE *fp, X509 *x, unsigned long nmflag,
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                     unsigned long cflag)
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{
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    BIO *b;
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    int ret;
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    if ((b = BIO_new(BIO_s_file())) == NULL) {
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        X509err(X509_F_X509_PRINT_EX_FP, ERR_R_BUF_LIB);
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        return 0;
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    }
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    BIO_set_fp(b, fp, BIO_NOCLOSE);
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    ret = X509_print_ex(b, x, nmflag, cflag);
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    BIO_free(b);
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    return ret;
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}
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#endif
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int X509_print(BIO *bp, X509 *x)
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{
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    return X509_print_ex(bp, x, XN_FLAG_COMPAT, X509_FLAG_COMPAT);
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}
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int X509_print_ex(BIO *bp, X509 *x, unsigned long nmflags,
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                  unsigned long cflag)
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{
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    long l;
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    int ret = 0, i;
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    char *m = NULL, mlch = ' ';
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    int nmindent = 0;
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    ASN1_INTEGER *bs;
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    EVP_PKEY *pkey = NULL;
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    const char *neg;
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    if ((nmflags & XN_FLAG_SEP_MASK) == XN_FLAG_SEP_MULTILINE) {
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        mlch = '\n';
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        nmindent = 12;
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    }
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    if (nmflags == X509_FLAG_COMPAT)
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        nmindent = 16;
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    if (!(cflag & X509_FLAG_NO_HEADER)) {
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        if (BIO_write(bp, "Certificate:\n", 13) <= 0)
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            goto err;
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        if (BIO_write(bp, "    Data:\n", 10) <= 0)
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            goto err;
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    }
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    if (!(cflag & X509_FLAG_NO_VERSION)) {
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        l = X509_get_version(x);
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        if (l >= 0 && l <= 2) {
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            if (BIO_printf(bp, "%8sVersion: %ld (0x%lx)\n", "", l + 1, (unsigned long)l) <= 0)
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                goto err;
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        } else {
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            if (BIO_printf(bp, "%8sVersion: Unknown (%ld)\n", "", l) <= 0)
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                goto err;
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        }
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    }
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    if (!(cflag & X509_FLAG_NO_SERIAL)) {
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        if (BIO_write(bp, "        Serial Number:", 22) <= 0)
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            goto err;
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        bs = X509_get_serialNumber(x);
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        if (bs->length <= (int)sizeof(long)) {
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                ERR_set_mark();
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                l = ASN1_INTEGER_get(bs);
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                ERR_pop_to_mark();
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        } else {
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            l = -1;
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        }
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        if (l != -1) {
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            unsigned long ul;
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            if (bs->type == V_ASN1_NEG_INTEGER) {
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                ul = 0 - (unsigned long)l;
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                neg = "-";
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            } else {
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                ul = l;
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                neg = "";
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            }
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            if (BIO_printf(bp, " %s%lu (%s0x%lx)\n", neg, ul, neg, ul) <= 0)
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                goto err;
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        } else {
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            neg = (bs->type == V_ASN1_NEG_INTEGER) ? " (Negative)" : "";
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            if (BIO_printf(bp, "\n%12s%s", "", neg) <= 0)
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                goto err;
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            for (i = 0; i < bs->length; i++) {
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                if (BIO_printf(bp, "%02x%c", bs->data[i],
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                               ((i + 1 == bs->length) ? '\n' : ':')) <= 0)
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                    goto err;
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            }
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        }
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    }
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    if (!(cflag & X509_FLAG_NO_SIGNAME)) {
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        const X509_ALGOR *tsig_alg = X509_get0_tbs_sigalg(x);
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        if (BIO_puts(bp, "    ") <= 0)
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            goto err;
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        if (X509_signature_print(bp, tsig_alg, NULL) <= 0)
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            goto err;
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    }
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    if (!(cflag & X509_FLAG_NO_ISSUER)) {
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        if (BIO_printf(bp, "        Issuer:%c", mlch) <= 0)
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            goto err;
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        if (X509_NAME_print_ex(bp, X509_get_issuer_name(x), nmindent, nmflags)
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            < 0)
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            goto err;
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        if (BIO_write(bp, "\n", 1) <= 0)
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            goto err;
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    }
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    if (!(cflag & X509_FLAG_NO_VALIDITY)) {
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        if (BIO_write(bp, "        Validity\n", 17) <= 0)
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            goto err;
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        if (BIO_write(bp, "            Not Before: ", 24) <= 0)
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            goto err;
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        if (!ASN1_TIME_print(bp, X509_get0_notBefore(x)))
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            goto err;
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        if (BIO_write(bp, "\n            Not After : ", 25) <= 0)
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            goto err;
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        if (!ASN1_TIME_print(bp, X509_get0_notAfter(x)))
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            goto err;
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        if (BIO_write(bp, "\n", 1) <= 0)
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            goto err;
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    }
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    if (!(cflag & X509_FLAG_NO_SUBJECT)) {
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        if (BIO_printf(bp, "        Subject:%c", mlch) <= 0)
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            goto err;
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        if (X509_NAME_print_ex
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            (bp, X509_get_subject_name(x), nmindent, nmflags) < 0)
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            goto err;
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        if (BIO_write(bp, "\n", 1) <= 0)
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            goto err;
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    }
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    if (!(cflag & X509_FLAG_NO_PUBKEY)) {
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        X509_PUBKEY *xpkey = X509_get_X509_PUBKEY(x);
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        ASN1_OBJECT *xpoid;
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        X509_PUBKEY_get0_param(&xpoid, NULL, NULL, NULL, xpkey);
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        if (BIO_write(bp, "        Subject Public Key Info:\n", 33) <= 0)
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            goto err;
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        if (BIO_printf(bp, "%12sPublic Key Algorithm: ", "") <= 0)
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            goto err;
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        if (i2a_ASN1_OBJECT(bp, xpoid) <= 0)
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            goto err;
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        if (BIO_puts(bp, "\n") <= 0)
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            goto err;
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        pkey = X509_get0_pubkey(x);
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        if (pkey == NULL) {
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            BIO_printf(bp, "%12sUnable to load Public Key\n", "");
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            ERR_print_errors(bp);
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        } else {
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            EVP_PKEY_print_public(bp, pkey, 16, NULL);
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        }
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    }
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    if (!(cflag & X509_FLAG_NO_IDS)) {
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        const ASN1_BIT_STRING *iuid, *suid;
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        X509_get0_uids(x, &iuid, &suid);
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        if (iuid != NULL) {
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            if (BIO_printf(bp, "%8sIssuer Unique ID: ", "") <= 0)
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                goto err;
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            if (!X509_signature_dump(bp, iuid, 12))
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                goto err;
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        }
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        if (suid != NULL) {
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            if (BIO_printf(bp, "%8sSubject Unique ID: ", "") <= 0)
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                goto err;
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            if (!X509_signature_dump(bp, suid, 12))
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                goto err;
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        }
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    }
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    if (!(cflag & X509_FLAG_NO_EXTENSIONS))
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        X509V3_extensions_print(bp, "X509v3 extensions",
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                                X509_get0_extensions(x), cflag, 8);
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    if (!(cflag & X509_FLAG_NO_SIGDUMP)) {
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        const X509_ALGOR *sig_alg;
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        const ASN1_BIT_STRING *sig;
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        X509_get0_signature(&sig, &sig_alg, x);
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        if (X509_signature_print(bp, sig_alg, sig) <= 0)
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            goto err;
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    }
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    if (!(cflag & X509_FLAG_NO_AUX)) {
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        if (!X509_aux_print(bp, x, 0))
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            goto err;
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    }
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    ret = 1;
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 err:
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    OPENSSL_free(m);
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    return ret;
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}
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int X509_ocspid_print(BIO *bp, X509 *x)
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{
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    unsigned char *der = NULL;
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    unsigned char *dertmp;
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    int derlen;
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    int i;
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    unsigned char SHA1md[SHA_DIGEST_LENGTH];
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    ASN1_BIT_STRING *keybstr;
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    X509_NAME *subj;
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    /*
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     * display the hash of the subject as it would appear in OCSP requests
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     */
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    if (BIO_printf(bp, "        Subject OCSP hash: ") <= 0)
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        goto err;
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    subj = X509_get_subject_name(x);
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    derlen = i2d_X509_NAME(subj, NULL);
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    if ((der = dertmp = OPENSSL_malloc(derlen)) == NULL)
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        goto err;
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    i2d_X509_NAME(subj, &dertmp);
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    if (!EVP_Digest(der, derlen, SHA1md, NULL, EVP_sha1(), NULL))
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        goto err;
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    for (i = 0; i < SHA_DIGEST_LENGTH; i++) {
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        if (BIO_printf(bp, "%02X", SHA1md[i]) <= 0)
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            goto err;
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    }
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    OPENSSL_free(der);
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    der = NULL;
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    /*
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     * display the hash of the public key as it would appear in OCSP requests
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     */
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    if (BIO_printf(bp, "\n        Public key OCSP hash: ") <= 0)
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        goto err;
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    keybstr = X509_get0_pubkey_bitstr(x);
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    if (keybstr == NULL)
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        goto err;
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    if (!EVP_Digest(ASN1_STRING_get0_data(keybstr),
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                    ASN1_STRING_length(keybstr), SHA1md, NULL, EVP_sha1(),
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                    NULL))
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        goto err;
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    for (i = 0; i < SHA_DIGEST_LENGTH; i++) {
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        if (BIO_printf(bp, "%02X", SHA1md[i]) <= 0)
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            goto err;
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    }
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    BIO_printf(bp, "\n");
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    return 1;
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 err:
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    OPENSSL_free(der);
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    return 0;
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}
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int X509_signature_dump(BIO *bp, const ASN1_STRING *sig, int indent)
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{
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    const unsigned char *s;
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    int i, n;
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    n = sig->length;
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    s = sig->data;
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    for (i = 0; i < n; i++) {
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        if ((i % 18) == 0) {
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            if (BIO_write(bp, "\n", 1) <= 0)
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                return 0;
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            if (BIO_indent(bp, indent, indent) <= 0)
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                return 0;
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        }
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        if (BIO_printf(bp, "%02x%s", s[i], ((i + 1) == n) ? "" : ":") <= 0)
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            return 0;
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    }
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    if (BIO_write(bp, "\n", 1) != 1)
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        return 0;
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    return 1;
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}
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int X509_signature_print(BIO *bp, const X509_ALGOR *sigalg,
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                         const ASN1_STRING *sig)
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{
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    int sig_nid;
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    if (BIO_puts(bp, "    Signature Algorithm: ") <= 0)
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        return 0;
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    if (i2a_ASN1_OBJECT(bp, sigalg->algorithm) <= 0)
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        return 0;
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    sig_nid = OBJ_obj2nid(sigalg->algorithm);
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    if (sig_nid != NID_undef) {
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        int pkey_nid, dig_nid;
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        const EVP_PKEY_ASN1_METHOD *ameth;
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        if (OBJ_find_sigid_algs(sig_nid, &dig_nid, &pkey_nid)) {
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            ameth = EVP_PKEY_asn1_find(NULL, pkey_nid);
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            if (ameth && ameth->sig_print)
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                return ameth->sig_print(bp, sigalg, sig, 9, 0);
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        }
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    }
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    if (sig)
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        return X509_signature_dump(bp, sig, 9);
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    else if (BIO_puts(bp, "\n") <= 0)
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        return 0;
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    return 1;
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}
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int X509_aux_print(BIO *out, X509 *x, int indent)
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{
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    char oidstr[80], first;
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    STACK_OF(ASN1_OBJECT) *trust, *reject;
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    const unsigned char *alias, *keyid;
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    int keyidlen;
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    int i;
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    if (X509_trusted(x) == 0)
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        return 1;
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    trust = X509_get0_trust_objects(x);
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    reject = X509_get0_reject_objects(x);
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    if (trust) {
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        first = 1;
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        BIO_printf(out, "%*sTrusted Uses:\n%*s", indent, "", indent + 2, "");
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        for (i = 0; i < sk_ASN1_OBJECT_num(trust); i++) {
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            if (!first)
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                BIO_puts(out, ", ");
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            else
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                first = 0;
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            OBJ_obj2txt(oidstr, sizeof(oidstr),
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                        sk_ASN1_OBJECT_value(trust, i), 0);
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            BIO_puts(out, oidstr);
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        }
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        BIO_puts(out, "\n");
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    } else
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        BIO_printf(out, "%*sNo Trusted Uses.\n", indent, "");
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    if (reject) {
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        first = 1;
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        BIO_printf(out, "%*sRejected Uses:\n%*s", indent, "", indent + 2, "");
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        for (i = 0; i < sk_ASN1_OBJECT_num(reject); i++) {
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            if (!first)
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                BIO_puts(out, ", ");
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            else
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                first = 0;
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            OBJ_obj2txt(oidstr, sizeof(oidstr),
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                        sk_ASN1_OBJECT_value(reject, i), 0);
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            BIO_puts(out, oidstr);
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        }
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        BIO_puts(out, "\n");
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    } else
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        BIO_printf(out, "%*sNo Rejected Uses.\n", indent, "");
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    alias = X509_alias_get0(x, &i);
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    if (alias)
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        BIO_printf(out, "%*sAlias: %.*s\n", indent, "", i, alias);
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    keyid = X509_keyid_get0(x, &keyidlen);
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    if (keyid) {
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        BIO_printf(out, "%*sKey Id: ", indent, "");
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        for (i = 0; i < keyidlen; i++)
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            BIO_printf(out, "%s%02X", i ? ":" : "", keyid[i]);
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        BIO_write(out, "\n", 1);
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    }
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    return 1;
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}
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