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by_file.c
/* crypto/x509/by_file.c */
/* 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 <time.h>
#include <errno.h>

#include "cryptlib.h"
#include <openssl/lhash.h>
#include <openssl/buffer.h>
#include <openssl/x509.h>
#include <openssl/pem.h>

#ifndef OPENSSL_NO_STDIO

static int by_file_ctrl(X509_LOOKUP *ctx, int cmd, const char *argc,
      long argl, char **ret);
X509_LOOKUP_METHOD x509_file_lookup=
      {
      "Load file into cache",
      NULL,       /* new */
      NULL,       /* free */
      NULL,             /* init */
      NULL,       /* shutdown */
      by_file_ctrl,     /* ctrl */
      NULL,       /* get_by_subject */
      NULL,       /* get_by_issuer_serial */
      NULL,       /* get_by_fingerprint */
      NULL,       /* get_by_alias */
      };

X509_LOOKUP_METHOD *X509_LOOKUP_file(void)
      {
      return(&x509_file_lookup);
      }

static int by_file_ctrl(X509_LOOKUP *ctx, int cmd, const char *argp, long argl,
           char **ret)
      {
      int ok=0;
      char *file;

      switch (cmd)
            {
      case X509_L_FILE_LOAD:
            if (argl == X509_FILETYPE_DEFAULT)
                  {
                  file = (char *)getenv(X509_get_default_cert_file_env());
                  if (file)
                        ok = (X509_load_cert_crl_file(ctx,file,
                                    X509_FILETYPE_PEM) != 0);

                  else
                        ok = (X509_load_cert_crl_file(ctx,X509_get_default_cert_file(),
                                    X509_FILETYPE_PEM) != 0);

                  if (!ok)
                        {
                        X509err(X509_F_BY_FILE_CTRL,X509_R_LOADING_DEFAULTS);
                        }
                  }
            else
                  {
                  if(argl == X509_FILETYPE_PEM)
                        ok = (X509_load_cert_crl_file(ctx,argp,
                              X509_FILETYPE_PEM) != 0);
                  else
                        ok = (X509_load_cert_file(ctx,argp,(int)argl) != 0);
                  }
            break;
            }
      return(ok);
      }

int X509_load_cert_file(X509_LOOKUP *ctx, const char *file, int type)
      {
      int ret=0;
      BIO *in=NULL;
      int i,count=0;
      X509 *x=NULL;

      if (file == NULL) return(1);
      in=BIO_new(BIO_s_file_internal());

      if ((in == NULL) || (BIO_read_filename(in,file) <= 0))
            {
            X509err(X509_F_X509_LOAD_CERT_FILE,ERR_R_SYS_LIB);
            goto err;
            }

      if (type == X509_FILETYPE_PEM)
            {
            for (;;)
                  {
                  x=PEM_read_bio_X509_AUX(in,NULL,NULL,NULL);
                  if (x == NULL)
                        {
                        if ((ERR_GET_REASON(ERR_peek_last_error()) ==
                              PEM_R_NO_START_LINE) && (count > 0))
                              {
                              ERR_clear_error();
                              break;
                              }
                        else
                              {
                              X509err(X509_F_X509_LOAD_CERT_FILE,
                                    ERR_R_PEM_LIB);
                              goto err;
                              }
                        }
                  i=X509_STORE_add_cert(ctx->store_ctx,x);
                  if (!i) goto err;
                  count++;
                  X509_free(x);
                  x=NULL;
                  }
            ret=count;
            }
      else if (type == X509_FILETYPE_ASN1)
            {
            x=d2i_X509_bio(in,NULL);
            if (x == NULL)
                  {
                  X509err(X509_F_X509_LOAD_CERT_FILE,ERR_R_ASN1_LIB);
                  goto err;
                  }
            i=X509_STORE_add_cert(ctx->store_ctx,x);
            if (!i) goto err;
            ret=i;
            }
      else
            {
            X509err(X509_F_X509_LOAD_CERT_FILE,X509_R_BAD_X509_FILETYPE);
            goto err;
            }
err:
      if (x != NULL) X509_free(x);
      if (in != NULL) BIO_free(in);
      return(ret);
      }

int X509_load_crl_file(X509_LOOKUP *ctx, const char *file, int type)
      {
      int ret=0;
      BIO *in=NULL;
      int i,count=0;
      X509_CRL *x=NULL;

      if (file == NULL) return(1);
      in=BIO_new(BIO_s_file_internal());

      if ((in == NULL) || (BIO_read_filename(in,file) <= 0))
            {
            X509err(X509_F_X509_LOAD_CRL_FILE,ERR_R_SYS_LIB);
            goto err;
            }

      if (type == X509_FILETYPE_PEM)
            {
            for (;;)
                  {
                  x=PEM_read_bio_X509_CRL(in,NULL,NULL,NULL);
                  if (x == NULL)
                        {
                        if ((ERR_GET_REASON(ERR_peek_last_error()) ==
                              PEM_R_NO_START_LINE) && (count > 0))
                              {
                              ERR_clear_error();
                              break;
                              }
                        else
                              {
                              X509err(X509_F_X509_LOAD_CRL_FILE,
                                    ERR_R_PEM_LIB);
                              goto err;
                              }
                        }
                  i=X509_STORE_add_crl(ctx->store_ctx,x);
                  if (!i) goto err;
                  count++;
                  X509_CRL_free(x);
                  x=NULL;
                  }
            ret=count;
            }
      else if (type == X509_FILETYPE_ASN1)
            {
            x=d2i_X509_CRL_bio(in,NULL);
            if (x == NULL)
                  {
                  X509err(X509_F_X509_LOAD_CRL_FILE,ERR_R_ASN1_LIB);
                  goto err;
                  }
            i=X509_STORE_add_crl(ctx->store_ctx,x);
            if (!i) goto err;
            ret=i;
            }
      else
            {
            X509err(X509_F_X509_LOAD_CRL_FILE,X509_R_BAD_X509_FILETYPE);
            goto err;
            }
err:
      if (x != NULL) X509_CRL_free(x);
      if (in != NULL) BIO_free(in);
      return(ret);
      }

int X509_load_cert_crl_file(X509_LOOKUP *ctx, const char *file, int type)
{
      STACK_OF(X509_INFO) *inf;
      X509_INFO *itmp;
      BIO *in;
      int i, count = 0;
      if(type != X509_FILETYPE_PEM)
            return X509_load_cert_file(ctx, file, type);
      in = BIO_new_file(file, "r");
      if(!in) {
            X509err(X509_F_X509_LOAD_CERT_CRL_FILE,ERR_R_SYS_LIB);
            return 0;
      }
      inf = PEM_X509_INFO_read_bio(in, NULL, NULL, NULL);
      BIO_free(in);
      if(!inf) {
            X509err(X509_F_X509_LOAD_CERT_CRL_FILE,ERR_R_PEM_LIB);
            return 0;
      }
      for(i = 0; i < sk_X509_INFO_num(inf); i++) {
            itmp = sk_X509_INFO_value(inf, i);
            if(itmp->x509) {
                  X509_STORE_add_cert(ctx->store_ctx, itmp->x509);
                  count++;
            }
            if(itmp->crl) {
                  X509_STORE_add_crl(ctx->store_ctx, itmp->crl);
                  count++;
            }
      }
      sk_X509_INFO_pop_free(inf, X509_INFO_free);
      return count;
}


#endif /* OPENSSL_NO_STDIO */


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