text: /* v3_pci.c -*- mode:C; c-file-style: "eay" -*- */
  /*
   * Contributed to the OpenSSL Project 2004 by Richard Levitte
   * (richard@levitte.org)
   */
  /* Copyright (c) 2004 Kungliga Tekniska Högskolan
   * (Royal Institute of Technology, Stockholm, Sweden).
   * 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. Neither the name of the Institute nor the names of its contributors
   *    may be used to endorse or promote products derived from this software
   *    without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``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 INSTITUTE 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.
   */
  
  #include <string.h>
  
  #include <CNIOBoringSSL_conf.h>
  #include <CNIOBoringSSL_err.h>
  #include <CNIOBoringSSL_mem.h>
  #include <CNIOBoringSSL_obj.h>
  #include <CNIOBoringSSL_x509v3.h>
  
  #include "../internal.h"
  #include "internal.h"
  
  
  static int i2r_pci(X509V3_EXT_METHOD *method, PROXY_CERT_INFO_EXTENSION *ext,
                     BIO *out, int indent);
  static PROXY_CERT_INFO_EXTENSION *r2i_pci(X509V3_EXT_METHOD *method,
                                            X509V3_CTX *ctx, char *str);
  
  const X509V3_EXT_METHOD v3_pci =
      { NID_proxyCertInfo, 0, ASN1_ITEM_ref(PROXY_CERT_INFO_EXTENSION),
      0, 0, 0, 0,
      0, 0,
      NULL, NULL,
      (X509V3_EXT_I2R)i2r_pci,
      (X509V3_EXT_R2I)r2i_pci,
      NULL,
  };
  
  static int i2r_pci(X509V3_EXT_METHOD *method, PROXY_CERT_INFO_EXTENSION *pci,
                     BIO *out, int indent)
  {
      BIO_printf(out, "%*sPath Length Constraint: ", indent, "");
      if (pci->pcPathLengthConstraint)
          i2a_ASN1_INTEGER(out, pci->pcPathLengthConstraint);
      else
          BIO_printf(out, "infinite");
      BIO_puts(out, "\n");
      BIO_printf(out, "%*sPolicy Language: ", indent, "");
      i2a_ASN1_OBJECT(out, pci->proxyPolicy->policyLanguage);
      BIO_puts(out, "\n");
      if (pci->proxyPolicy->policy && pci->proxyPolicy->policy->data)
          BIO_printf(out, "%*sPolicy Text: %.*s\n", indent, "",
                     pci->proxyPolicy->policy->length,
                     pci->proxyPolicy->policy->data);
      return 1;
  }
  
  static int process_pci_value(CONF_VALUE *val,
                               ASN1_OBJECT **language, ASN1_INTEGER **pathlen,
                               ASN1_OCTET_STRING **policy)
  {
      int free_policy = 0;
  
      if (strcmp(val->name, "language") == 0) {
          if (*language) {
              OPENSSL_PUT_ERROR(X509V3,
                                X509V3_R_POLICY_LANGUAGE_ALREADY_DEFINED);
              X509V3_conf_err(val);
              return 0;
          }
          if (!(*language = OBJ_txt2obj(val->value, 0))) {
              OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_OBJECT_IDENTIFIER);
              X509V3_conf_err(val);
              return 0;
          }
      } else if (strcmp(val->name, "pathlen") == 0) {
          if (*pathlen) {
              OPENSSL_PUT_ERROR(X509V3,
                                X509V3_R_POLICY_PATH_LENGTH_ALREADY_DEFINED);
              X509V3_conf_err(val);
              return 0;
          }
          if (!X509V3_get_value_int(val, pathlen)) {
              OPENSSL_PUT_ERROR(X509V3, X509V3_R_POLICY_PATH_LENGTH);
              X509V3_conf_err(val);
              return 0;
          }
      } else if (strcmp(val->name, "policy") == 0) {
          unsigned char *tmp_data = NULL;
          long val_len;
          if (!*policy) {
              *policy = ASN1_OCTET_STRING_new();
              if (!*policy) {
                  OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
                  X509V3_conf_err(val);
                  return 0;
              }
              free_policy = 1;
          }
          if (strncmp(val->value, "hex:", 4) == 0) {
              unsigned char *tmp_data2 =
                  x509v3_hex_to_bytes(val->value + 4, &val_len);
  
              if (!tmp_data2) {
                  OPENSSL_PUT_ERROR(X509V3, X509V3_R_ILLEGAL_HEX_DIGIT);
                  X509V3_conf_err(val);
                  goto err;
              }
  
              tmp_data = OPENSSL_realloc((*policy)->data,
                                         (*policy)->length + val_len + 1);
              if (tmp_data) {
                  (*policy)->data = tmp_data;
                  OPENSSL_memcpy(&(*policy)->data[(*policy)->length],
                         tmp_data2, val_len);
                  (*policy)->length += val_len;
                  (*policy)->data[(*policy)->length] = '\0';
              } else {
                  OPENSSL_free(tmp_data2);
                  /*
                   * realloc failure implies the original data space is b0rked
                   * too!
                   */
                  (*policy)->data = NULL;
                  (*policy)->length = 0;
                  OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
                  X509V3_conf_err(val);
                  goto err;
              }
              OPENSSL_free(tmp_data2);
          } else if (strncmp(val->value, "text:", 5) == 0) {
              val_len = strlen(val->value + 5);
              tmp_data = OPENSSL_realloc((*policy)->data,
                                         (*policy)->length + val_len + 1);
              if (tmp_data) {
                  (*policy)->data = tmp_data;
                  OPENSSL_memcpy(&(*policy)->data[(*policy)->length],
                         val->value + 5, val_len);
                  (*policy)->length += val_len;
                  (*policy)->data[(*policy)->length] = '\0';
              } else {
                  /*
                   * realloc failure implies the original data space is b0rked
                   * too!
                   */
                  (*policy)->data = NULL;
                  (*policy)->length = 0;
                  OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
                  X509V3_conf_err(val);
                  goto err;
              }
          } else {
              OPENSSL_PUT_ERROR(X509V3, X509V3_R_INCORRECT_POLICY_SYNTAX_TAG);
              X509V3_conf_err(val);
              goto err;
          }
          if (!tmp_data) {
              OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
              X509V3_conf_err(val);
              goto err;
          }
      }
      return 1;
   err:
      if (free_policy) {
          ASN1_OCTET_STRING_free(*policy);
          *policy = NULL;
      }
      return 0;
  }
  
  static PROXY_CERT_INFO_EXTENSION *r2i_pci(X509V3_EXT_METHOD *method,
                                            X509V3_CTX *ctx, char *value)
  {
      PROXY_CERT_INFO_EXTENSION *pci = NULL;
      STACK_OF(CONF_VALUE) *vals;
      ASN1_OBJECT *language = NULL;
      ASN1_INTEGER *pathlen = NULL;
      ASN1_OCTET_STRING *policy = NULL;
      size_t i, j;
      int nid;
  
      vals = X509V3_parse_list(value);
      for (i = 0; i < sk_CONF_VALUE_num(vals); i++) {
          CONF_VALUE *cnf = sk_CONF_VALUE_value(vals, i);
          if (!cnf->name || (*cnf->name != '@' && !cnf->value)) {
              OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_PROXY_POLICY_SETTING);
              X509V3_conf_err(cnf);
              goto err;
          }
          if (*cnf->name == '@') {
              STACK_OF(CONF_VALUE) *sect;
              int success_p = 1;
  
              sect = X509V3_get_section(ctx, cnf->name + 1);
              if (!sect) {
                  OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_SECTION);
                  X509V3_conf_err(cnf);
                  goto err;
              }
              for (j = 0; success_p && j < sk_CONF_VALUE_num(sect); j++) {
                  success_p =
                      process_pci_value(sk_CONF_VALUE_value(sect, j),
                                        &language, &pathlen, &policy);
              }
              X509V3_section_free(ctx, sect);
              if (!success_p)
                  goto err;
          } else {
              if (!process_pci_value(cnf, &language, &pathlen, &policy)) {
                  X509V3_conf_err(cnf);
                  goto err;
              }
          }
      }
  
      /* Language is mandatory */
      if (!language) {
          OPENSSL_PUT_ERROR(X509V3,
                            X509V3_R_NO_PROXY_CERT_POLICY_LANGUAGE_DEFINED);
          goto err;
      }
      nid = OBJ_obj2nid(language);
      if ((nid == NID_Independent || nid == NID_id_ppl_inheritAll) && policy) {
          OPENSSL_PUT_ERROR(X509V3,
                            X509V3_R_POLICY_WHEN_PROXY_LANGUAGE_REQUIRES_NO_POLICY);
          goto err;
      }
  
      pci = PROXY_CERT_INFO_EXTENSION_new();
      if (!pci) {
          OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
          goto err;
      }
  
      pci->proxyPolicy->policyLanguage = language;
      language = NULL;
      pci->proxyPolicy->policy = policy;
      policy = NULL;
      pci->pcPathLengthConstraint = pathlen;
      pathlen = NULL;
      goto end;
   err:
      if (language) {
          ASN1_OBJECT_free(language);
          language = NULL;
      }
      if (pathlen) {
          ASN1_INTEGER_free(pathlen);
          pathlen = NULL;
      }
      if (policy) {
          ASN1_OCTET_STRING_free(policy);
          policy = NULL;
      }
      if (pci) {
          PROXY_CERT_INFO_EXTENSION_free(pci);
          pci = NULL;
      }
   end:
      sk_CONF_VALUE_pop_free(vals, X509V3_conf_free);
      return pci;
  }
  