text: /* $OpenBSD: t_req.c,v 1.17 2014/07/11 08:44:47 jsing Exp $ */
  /* 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 <openssl/opensslconf.h>
  
  #include <openssl/bn.h>
  #include <openssl/buffer.h>
  #include <openssl/err.h>
  #include <openssl/objects.h>
  #include <openssl/x509.h>
  #include <openssl/x509v3.h>
  
  #ifndef OPENSSL_NO_DSA
  #include <openssl/dsa.h>
  #endif
  #ifndef OPENSSL_NO_RSA
  #include <openssl/rsa.h>
  #endif
  
  int
  X509_REQ_print_fp(FILE *fp, X509_REQ *x)
  {
  	BIO *b;
  	int ret;
  
  	if ((b = BIO_new(BIO_s_file())) == NULL) {
  		X509err(X509_F_X509_REQ_PRINT_FP, ERR_R_BUF_LIB);
  		return (0);
  	}
  	BIO_set_fp(b, fp, BIO_NOCLOSE);
  	ret = X509_REQ_print(b, x);
  	BIO_free(b);
  	return (ret);
  }
  
  int
  X509_REQ_print_ex(BIO *bp, X509_REQ *x, unsigned long nmflags,
      unsigned long cflag)
  {
  	unsigned long l;
  	int i;
  	const char *neg;
  	X509_REQ_INFO *ri;
  	EVP_PKEY *pkey;
  	STACK_OF(X509_ATTRIBUTE) *sk;
  	STACK_OF(X509_EXTENSION) *exts;
  	char mlch = ' ';
  	int nmindent = 0;
  
  	if ((nmflags & XN_FLAG_SEP_MASK) == XN_FLAG_SEP_MULTILINE) {
  		mlch = '\n';
  		nmindent = 12;
  	}
  
  	if (nmflags == X509_FLAG_COMPAT)
  		nmindent = 16;
  
  	ri = x->req_info;
  	if (!(cflag & X509_FLAG_NO_HEADER)) {
  		if (BIO_write(bp, "Certificate Request:\n", 21) <= 0)
  			goto err;
  		if (BIO_write(bp, "    Data:\n", 10) <= 0)
  
  			goto err;
  	}
  	if (!(cflag & X509_FLAG_NO_VERSION)) {
  		neg = (ri->version->type == V_ASN1_NEG_INTEGER) ? "-" : "";
  		l = 0;
  		for (i = 0; i < ri->version->length; i++) {
  			l <<= 8;
  			l += ri->version->data[i];
  		}
  		if (BIO_printf(bp, "%8sVersion: %s%lu (%s0x%lx)\n", "", neg,
  		    l, neg, l) <= 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, ri->subject, 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, ri->pubkey->algor->algorithm) <= 0)
  			goto err;
  		if (BIO_puts(bp, "\n") <= 0)
  			goto err;
  
  		pkey = X509_REQ_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_ATTRIBUTES)) {
  		/* may not be */
  		if (BIO_printf(bp, "%8sAttributes:\n", "") <= 0)
  			goto err;
  
  		sk = x->req_info->attributes;
  		if (sk_X509_ATTRIBUTE_num(sk) == 0) {
  			if (BIO_printf(bp, "%12sa0:00\n", "") <= 0)
  				goto err;
  		} else {
  			for (i = 0; i < sk_X509_ATTRIBUTE_num(sk); i++) {
  				ASN1_TYPE *at;
  				X509_ATTRIBUTE *a;
  				ASN1_BIT_STRING *bs = NULL;
  				ASN1_TYPE *t;
  				int j, type = 0, count = 1, ii = 0;
  
  				a = sk_X509_ATTRIBUTE_value(sk, i);
  				if (X509_REQ_extension_nid(
  				    OBJ_obj2nid(a->object)))
  					continue;
  				if (BIO_printf(bp, "%12s", "") <= 0)
  					goto err;
  				if ((j = i2a_ASN1_OBJECT(bp, a->object)) > 0) {
  					if (a->single) {
  						t = a->value.single;
  						type = t->type;
  						bs = t->value.bit_string;
  					} else {
  						ii = 0;
  						count = sk_ASN1_TYPE_num(
  						    a->value.set);
  get_next:
  						at = sk_ASN1_TYPE_value(
  						    a->value.set, ii);
  						type = at->type;
  						bs = at->value.asn1_string;
  					}
  				}
  				for (j = 25 - j; j > 0; j--)
  					if (BIO_write(bp, " ", 1) != 1)
  						goto err;
  				if (BIO_puts(bp, ":") <= 0)
  					goto err;
  				if ((type == V_ASN1_PRINTABLESTRING) ||
  				    (type == V_ASN1_T61STRING) ||
  				    (type == V_ASN1_IA5STRING)) {
  					if (BIO_write(bp, (char *)bs->data,
  					    bs->length) != bs->length)
  						goto err;
  					BIO_puts(bp, "\n");
  				} else {
  					BIO_puts(bp,
  					    "unable to print attribute\n");
  				}
  				if (++ii < count)
  					goto get_next;
  			}
  		}
  	}
  	if (!(cflag & X509_FLAG_NO_EXTENSIONS)) {
  		exts = X509_REQ_get_extensions(x);
  		if (exts) {
  			BIO_printf(bp, "%8sRequested Extensions:\n", "");
  			for (i = 0; i < sk_X509_EXTENSION_num(exts); i++) {
  				ASN1_OBJECT *obj;
  				X509_EXTENSION *ex;
  				int j;
  				ex = sk_X509_EXTENSION_value(exts, i);
  				if (BIO_printf(bp, "%12s", "") <= 0)
  					goto err;
  				obj = X509_EXTENSION_get_object(ex);
  				i2a_ASN1_OBJECT(bp, obj);
  				j = X509_EXTENSION_get_critical(ex);
  				if (BIO_printf(bp, ": %s\n",
  				    j ? "critical" : "") <= 0)
  					goto err;
  				if (!X509V3_EXT_print(bp, ex, cflag, 16)) {
  					BIO_printf(bp, "%16s", "");
  					ASN1_STRING_print(bp, ex->value);
  				}
  				if (BIO_write(bp, "\n", 1) <= 0)
  					goto err;
  			}
  			sk_X509_EXTENSION_pop_free(exts, X509_EXTENSION_free);
  		}
  	}
  
  	if (!(cflag & X509_FLAG_NO_SIGDUMP)) {
  		if (!X509_signature_print(bp, x->sig_alg, x->signature))
  			goto err;
  	}
  
  	return (1);
  
  err:
  	X509err(X509_F_X509_REQ_PRINT_EX, ERR_R_BUF_LIB);
  	return (0);
  }
  
  int
  X509_REQ_print(BIO *bp, X509_REQ *x)
  {
  	return X509_REQ_print_ex(bp, x, XN_FLAG_COMPAT, X509_FLAG_COMPAT);
  }
  