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v3_cpols.c

/* v3_cpols.c */
/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
 * project 1999.
 */
/* ====================================================================
 * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
 *
 * 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 above 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 acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
 *
 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
 *    endorse or promote products derived from this software without
 *    prior written permission. For written permission, please contact
 *    licensing@OpenSSL.org.
 *
 * 5. Products derived from this software may not be called "OpenSSL"
 *    nor may "OpenSSL" appear in their names without prior written
 *    permission of the OpenSSL Project.
 *
 * 6. Redistributions of any form whatsoever must retain the following
 *    acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
 *
 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
 * EXPRESSED 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 OpenSSL PROJECT OR
 * ITS 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.
 * ====================================================================
 *
 * This product includes cryptographic software written by Eric Young
 * (eay@cryptsoft.com).  This product includes software written by Tim
 * Hudson (tjh@cryptsoft.com).
 *
 */

#include <stdio.h>
#include "cryptlib.h"
#include <openssl/conf.h>
#include <openssl/asn1.h>
#include <openssl/asn1t.h>
#include <openssl/x509v3.h>

/* Certificate policies extension support: this one is a bit complex... */

static int i2r_certpol(X509V3_EXT_METHOD *method, STACK_OF(POLICYINFO) *pol, BIO *out, int indent);
static STACK_OF(POLICYINFO) *r2i_certpol(X509V3_EXT_METHOD *method, X509V3_CTX *ctx, char *value);
static void print_qualifiers(BIO *out, STACK_OF(POLICYQUALINFO) *quals, int indent);
static void print_notice(BIO *out, USERNOTICE *notice, int indent);
static POLICYINFO *policy_section(X509V3_CTX *ctx,
                         STACK_OF(CONF_VALUE) *polstrs, int ia5org);
static POLICYQUALINFO *notice_section(X509V3_CTX *ctx,
                              STACK_OF(CONF_VALUE) *unot, int ia5org);
static int nref_nos(STACK_OF(ASN1_INTEGER) *nnums, STACK_OF(CONF_VALUE) *nos);

X509V3_EXT_METHOD v3_cpols = {
NID_certificate_policies, 0,ASN1_ITEM_ref(CERTIFICATEPOLICIES),
0,0,0,0,
0,0,
0,0,
(X509V3_EXT_I2R)i2r_certpol,
(X509V3_EXT_R2I)r2i_certpol,
NULL
};

ASN1_ITEM_TEMPLATE(CERTIFICATEPOLICIES) = 
      ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF, 0, CERTIFICATEPOLICIES, POLICYINFO)
ASN1_ITEM_TEMPLATE_END(CERTIFICATEPOLICIES)

IMPLEMENT_ASN1_FUNCTIONS(CERTIFICATEPOLICIES)

ASN1_SEQUENCE(POLICYINFO) = {
      ASN1_SIMPLE(POLICYINFO, policyid, ASN1_OBJECT),
      ASN1_SEQUENCE_OF_OPT(POLICYINFO, qualifiers, POLICYQUALINFO)
} ASN1_SEQUENCE_END(POLICYINFO)

IMPLEMENT_ASN1_FUNCTIONS(POLICYINFO)

ASN1_ADB_TEMPLATE(policydefault) = ASN1_SIMPLE(POLICYQUALINFO, d.other, ASN1_ANY);

ASN1_ADB(POLICYQUALINFO) = {
      ADB_ENTRY(NID_id_qt_cps, ASN1_SIMPLE(POLICYQUALINFO, d.cpsuri, ASN1_IA5STRING)),
      ADB_ENTRY(NID_id_qt_unotice, ASN1_SIMPLE(POLICYQUALINFO, d.usernotice, USERNOTICE))
} ASN1_ADB_END(POLICYQUALINFO, 0, pqualid, 0, &policydefault_tt, NULL);

ASN1_SEQUENCE(POLICYQUALINFO) = {
      ASN1_SIMPLE(POLICYQUALINFO, pqualid, ASN1_OBJECT),
      ASN1_ADB_OBJECT(POLICYQUALINFO)
} ASN1_SEQUENCE_END(POLICYQUALINFO)

IMPLEMENT_ASN1_FUNCTIONS(POLICYQUALINFO)

ASN1_SEQUENCE(USERNOTICE) = {
      ASN1_OPT(USERNOTICE, noticeref, NOTICEREF),
      ASN1_OPT(USERNOTICE, exptext, DISPLAYTEXT)
} ASN1_SEQUENCE_END(USERNOTICE)

IMPLEMENT_ASN1_FUNCTIONS(USERNOTICE)

ASN1_SEQUENCE(NOTICEREF) = {
      ASN1_SIMPLE(NOTICEREF, organization, DISPLAYTEXT),
      ASN1_SEQUENCE_OF(NOTICEREF, noticenos, ASN1_INTEGER)
} ASN1_SEQUENCE_END(NOTICEREF)

IMPLEMENT_ASN1_FUNCTIONS(NOTICEREF)

static STACK_OF(POLICYINFO) *r2i_certpol(X509V3_EXT_METHOD *method,
            X509V3_CTX *ctx, char *value)
{
      STACK_OF(POLICYINFO) *pols = NULL;
      char *pstr;
      POLICYINFO *pol;
      ASN1_OBJECT *pobj;
      STACK_OF(CONF_VALUE) *vals;
      CONF_VALUE *cnf;
      int i, ia5org;
      pols = sk_POLICYINFO_new_null();
      vals =  X509V3_parse_list(value);
      ia5org = 0;
      for(i = 0; i < sk_CONF_VALUE_num(vals); i++) {
            cnf = sk_CONF_VALUE_value(vals, i);
            if(cnf->value || !cnf->name ) {
                  X509V3err(X509V3_F_R2I_CERTPOL,X509V3_R_INVALID_POLICY_IDENTIFIER);
                  X509V3_conf_err(cnf);
                  goto err;
            }
            pstr = cnf->name;
            if(!strcmp(pstr,"ia5org")) {
                  ia5org = 1;
                  continue;
            } else if(*pstr == '@') {
                  STACK_OF(CONF_VALUE) *polsect;
                  polsect = X509V3_get_section(ctx, pstr + 1);
                  if(!polsect) {
                        X509V3err(X509V3_F_R2I_CERTPOL,X509V3_R_INVALID_SECTION);

                        X509V3_conf_err(cnf);
                        goto err;
                  }
                  pol = policy_section(ctx, polsect, ia5org);
                  X509V3_section_free(ctx, polsect);
                  if(!pol) goto err;
            } else {
                  if(!(pobj = OBJ_txt2obj(cnf->name, 0))) {
                        X509V3err(X509V3_F_R2I_CERTPOL,X509V3_R_INVALID_OBJECT_IDENTIFIER);
                        X509V3_conf_err(cnf);
                        goto err;
                  }
                  pol = POLICYINFO_new();
                  pol->policyid = pobj;
            }
            sk_POLICYINFO_push(pols, pol);
      }
      sk_CONF_VALUE_pop_free(vals, X509V3_conf_free);
      return pols;
      err:
      sk_POLICYINFO_pop_free(pols, POLICYINFO_free);
      return NULL;
}

static POLICYINFO *policy_section(X509V3_CTX *ctx,
                        STACK_OF(CONF_VALUE) *polstrs, int ia5org)
{
      int i;
      CONF_VALUE *cnf;
      POLICYINFO *pol;
      POLICYQUALINFO *qual;
      if(!(pol = POLICYINFO_new())) goto merr;
      for(i = 0; i < sk_CONF_VALUE_num(polstrs); i++) {
            cnf = sk_CONF_VALUE_value(polstrs, i);
            if(!strcmp(cnf->name, "policyIdentifier")) {
                  ASN1_OBJECT *pobj;
                  if(!(pobj = OBJ_txt2obj(cnf->value, 0))) {
                        X509V3err(X509V3_F_POLICY_SECTION,X509V3_R_INVALID_OBJECT_IDENTIFIER);
                        X509V3_conf_err(cnf);
                        goto err;
                  }
                  pol->policyid = pobj;

            } else if(!name_cmp(cnf->name, "CPS")) {
                  if(!pol->qualifiers) pol->qualifiers =
                                     sk_POLICYQUALINFO_new_null();
                  if(!(qual = POLICYQUALINFO_new())) goto merr;
                  if(!sk_POLICYQUALINFO_push(pol->qualifiers, qual))
                                                 goto merr;
                  qual->pqualid = OBJ_nid2obj(NID_id_qt_cps);
                  qual->d.cpsuri = M_ASN1_IA5STRING_new();
                  if(!ASN1_STRING_set(qual->d.cpsuri, cnf->value,
                                     strlen(cnf->value))) goto merr;
            } else if(!name_cmp(cnf->name, "userNotice")) {
                  STACK_OF(CONF_VALUE) *unot;
                  if(*cnf->value != '@') {
                        X509V3err(X509V3_F_POLICY_SECTION,X509V3_R_EXPECTED_A_SECTION_NAME);
                        X509V3_conf_err(cnf);
                        goto err;
                  }
                  unot = X509V3_get_section(ctx, cnf->value + 1);
                  if(!unot) {
                        X509V3err(X509V3_F_POLICY_SECTION,X509V3_R_INVALID_SECTION);

                        X509V3_conf_err(cnf);
                        goto err;
                  }
                  qual = notice_section(ctx, unot, ia5org);
                  X509V3_section_free(ctx, unot);
                  if(!qual) goto err;
                  if(!pol->qualifiers) pol->qualifiers =
                                     sk_POLICYQUALINFO_new_null();
                  if(!sk_POLICYQUALINFO_push(pol->qualifiers, qual))
                                                 goto merr;
            } else {
                  X509V3err(X509V3_F_POLICY_SECTION,X509V3_R_INVALID_OPTION);

                  X509V3_conf_err(cnf);
                  goto err;
            }
      }
      if(!pol->policyid) {
            X509V3err(X509V3_F_POLICY_SECTION,X509V3_R_NO_POLICY_IDENTIFIER);
            goto err;
      }

      return pol;

      merr:
      X509V3err(X509V3_F_POLICY_SECTION,ERR_R_MALLOC_FAILURE);

      err:
      POLICYINFO_free(pol);
      return NULL;
      
      
}

static POLICYQUALINFO *notice_section(X509V3_CTX *ctx,
                              STACK_OF(CONF_VALUE) *unot, int ia5org)
{
      int i, ret;
      CONF_VALUE *cnf;
      USERNOTICE *not;
      POLICYQUALINFO *qual;
      if(!(qual = POLICYQUALINFO_new())) goto merr;
      qual->pqualid = OBJ_nid2obj(NID_id_qt_unotice);
      if(!(not = USERNOTICE_new())) goto merr;
      qual->d.usernotice = not;
      for(i = 0; i < sk_CONF_VALUE_num(unot); i++) {
            cnf = sk_CONF_VALUE_value(unot, i);
            if(!strcmp(cnf->name, "explicitText")) {
                  not->exptext = M_ASN1_VISIBLESTRING_new();
                  if(!ASN1_STRING_set(not->exptext, cnf->value,
                                     strlen(cnf->value))) goto merr;
            } else if(!strcmp(cnf->name, "organization")) {
                  NOTICEREF *nref;
                  if(!not->noticeref) {
                        if(!(nref = NOTICEREF_new())) goto merr;
                        not->noticeref = nref;
                  } else nref = not->noticeref;
                  if(ia5org) nref->organization->type = V_ASN1_IA5STRING;
                  else nref->organization->type = V_ASN1_VISIBLESTRING;
                  if(!ASN1_STRING_set(nref->organization, cnf->value,
                                     strlen(cnf->value))) goto merr;
            } else if(!strcmp(cnf->name, "noticeNumbers")) {
                  NOTICEREF *nref;
                  STACK_OF(CONF_VALUE) *nos;
                  if(!not->noticeref) {
                        if(!(nref = NOTICEREF_new())) goto merr;
                        not->noticeref = nref;
                  } else nref = not->noticeref;
                  nos = X509V3_parse_list(cnf->value);
                  if(!nos || !sk_CONF_VALUE_num(nos)) {
                        X509V3err(X509V3_F_NOTICE_SECTION,X509V3_R_INVALID_NUMBERS);
                        X509V3_conf_err(cnf);
                        goto err;
                  }
                  ret = nref_nos(nref->noticenos, nos);
                  sk_CONF_VALUE_pop_free(nos, X509V3_conf_free);
                  if (!ret)
                        goto err;
            } else {
                  X509V3err(X509V3_F_NOTICE_SECTION,X509V3_R_INVALID_OPTION);
                  X509V3_conf_err(cnf);
                  goto err;
            }
      }

      if(not->noticeref && 
            (!not->noticeref->noticenos || !not->noticeref->organization)) {
                  X509V3err(X509V3_F_NOTICE_SECTION,X509V3_R_NEED_ORGANIZATION_AND_NUMBERS);
                  goto err;
      }

      return qual;

      merr:
      X509V3err(X509V3_F_NOTICE_SECTION,ERR_R_MALLOC_FAILURE);

      err:
      POLICYQUALINFO_free(qual);
      return NULL;
}

static int nref_nos(STACK_OF(ASN1_INTEGER) *nnums, STACK_OF(CONF_VALUE) *nos)
{
      CONF_VALUE *cnf;
      ASN1_INTEGER *aint;

      int i;

      for(i = 0; i < sk_CONF_VALUE_num(nos); i++) {
            cnf = sk_CONF_VALUE_value(nos, i);
            if(!(aint = s2i_ASN1_INTEGER(NULL, cnf->name))) {
                  X509V3err(X509V3_F_NREF_NOS,X509V3_R_INVALID_NUMBER);
                  goto err;
            }
            if(!sk_ASN1_INTEGER_push(nnums, aint)) goto merr;
      }
      return 1;

      merr:
      X509V3err(X509V3_F_NOTICE_SECTION,ERR_R_MALLOC_FAILURE);

      err:
      sk_ASN1_INTEGER_pop_free(nnums, ASN1_STRING_free);
      return 0;
}


static int i2r_certpol(X509V3_EXT_METHOD *method, STACK_OF(POLICYINFO) *pol,
            BIO *out, int indent)
{
      int i;
      POLICYINFO *pinfo;
      /* First print out the policy OIDs */
      for(i = 0; i < sk_POLICYINFO_num(pol); i++) {
            pinfo = sk_POLICYINFO_value(pol, i);
            BIO_printf(out, "%*sPolicy: ", indent, "");
            i2a_ASN1_OBJECT(out, pinfo->policyid);
            BIO_puts(out, "\n");
            if(pinfo->qualifiers)
                   print_qualifiers(out, pinfo->qualifiers, indent + 2);
      }
      return 1;
}

static void print_qualifiers(BIO *out, STACK_OF(POLICYQUALINFO) *quals,
            int indent)
{
      POLICYQUALINFO *qualinfo;
      int i;
      for(i = 0; i < sk_POLICYQUALINFO_num(quals); i++) {
            qualinfo = sk_POLICYQUALINFO_value(quals, i);
            switch(OBJ_obj2nid(qualinfo->pqualid))
            {
                  case NID_id_qt_cps:
                  BIO_printf(out, "%*sCPS: %s\n", indent, "",
                                    qualinfo->d.cpsuri->data);
                  break;
            
                  case NID_id_qt_unotice:
                  BIO_printf(out, "%*sUser Notice:\n", indent, "");
                  print_notice(out, qualinfo->d.usernotice, indent + 2);
                  break;

                  default:
                  BIO_printf(out, "%*sUnknown Qualifier: ",
                                           indent + 2, "");
                  
                  i2a_ASN1_OBJECT(out, qualinfo->pqualid);
                  BIO_puts(out, "\n");
                  break;
            }
      }
}

static void print_notice(BIO *out, USERNOTICE *notice, int indent)
{
      int i;
      if(notice->noticeref) {
            NOTICEREF *ref;
            ref = notice->noticeref;
            BIO_printf(out, "%*sOrganization: %s\n", indent, "",
                                     ref->organization->data);
            BIO_printf(out, "%*sNumber%s: ", indent, "",
                     sk_ASN1_INTEGER_num(ref->noticenos) > 1 ? "s" : "");
            for(i = 0; i < sk_ASN1_INTEGER_num(ref->noticenos); i++) {
                  ASN1_INTEGER *num;
                  char *tmp;
                  num = sk_ASN1_INTEGER_value(ref->noticenos, i);
                  if(i) BIO_puts(out, ", ");
                  tmp = i2s_ASN1_INTEGER(NULL, num);
                  BIO_puts(out, tmp);
                  OPENSSL_free(tmp);
            }
            BIO_puts(out, "\n");
      }
      if(notice->exptext)
            BIO_printf(out, "%*sExplicit Text: %s\n", indent, "",
                                           notice->exptext->data);
}


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