IABSD.fr/src/lib/libtls/tls_keypair.c

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• Author : jsing
  Date : 2021-01-05 17:37:12
  Hash : 7a6bb149
  Message : Fix indent.

• lib/libtls/tls_keypair.c

• /* $OpenBSD: tls_keypair.c,v 1.8 2021/01/05 17:37:12 jsing Exp $ */
  /*
   * Copyright (c) 2014 Joel Sing <jsing@openbsd.org>
   *
   * Permission to use, copy, modify, and distribute this software for any
   * purpose with or without fee is hereby granted, provided that the above
   * copyright notice and this permission notice appear in all copies.
   *
   * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
   * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
   * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
   * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
   * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
   * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
   */
  
  #include <openssl/bio.h>
  #include <openssl/err.h>
  #include <openssl/pem.h>
  
  #include <tls.h>
  
  #include "tls_internal.h"
  
  struct tls_keypair *
  tls_keypair_new(void)
  {
  	return calloc(1, sizeof(struct tls_keypair));
  }
  
  static int
  tls_keypair_pubkey_hash(struct tls_keypair *keypair, struct tls_error *error)
  {
  	X509 *cert = NULL;
  	int rv = -1;
  
  	free(keypair->pubkey_hash);
  	keypair->pubkey_hash = NULL;
  
  	if (keypair->cert_mem == NULL) {
  		rv = 0;
  		goto done;
  	}
  
  	if (tls_keypair_load_cert(keypair, error, &cert) == -1)
  		goto err;
  	if (tls_cert_pubkey_hash(cert, &keypair->pubkey_hash) == -1)
  		goto err;
  
  	rv = 0;
  
   err:
  	X509_free(cert);
   done:
  	return (rv);
  }
  
  void
  tls_keypair_clear_key(struct tls_keypair *keypair)
  {
  	freezero(keypair->key_mem, keypair->key_len);
  	keypair->key_mem = NULL;
  	keypair->key_len = 0;
  }
  
  int
  tls_keypair_set_cert_file(struct tls_keypair *keypair, struct tls_error *error,
      const char *cert_file)
  {
  	if (tls_config_load_file(error, "certificate", cert_file,
  	    &keypair->cert_mem, &keypair->cert_len) == -1)
  		return -1;
  	return tls_keypair_pubkey_hash(keypair, error);
  }
  
  int
  tls_keypair_set_cert_mem(struct tls_keypair *keypair, struct tls_error *error,
      const uint8_t *cert, size_t len)
  {
  	if (tls_set_mem(&keypair->cert_mem, &keypair->cert_len, cert, len) == -1)
  		return -1;
  	return tls_keypair_pubkey_hash(keypair, error);
  }
  
  int
  tls_keypair_set_key_file(struct tls_keypair *keypair, struct tls_error *error,
      const char *key_file)
  {
  	tls_keypair_clear_key(keypair);
  	return tls_config_load_file(error, "key", key_file,
  	    &keypair->key_mem, &keypair->key_len);
  }
  
  int
  tls_keypair_set_key_mem(struct tls_keypair *keypair, struct tls_error *error,
      const uint8_t *key, size_t len)
  {
  	tls_keypair_clear_key(keypair);
  	return tls_set_mem(&keypair->key_mem, &keypair->key_len, key, len);
  }
  
  int
  tls_keypair_set_ocsp_staple_file(struct tls_keypair *keypair,
      struct tls_error *error, const char *ocsp_file)
  {
  	return tls_config_load_file(error, "ocsp", ocsp_file,
  	    &keypair->ocsp_staple, &keypair->ocsp_staple_len);
  }
  
  int
  tls_keypair_set_ocsp_staple_mem(struct tls_keypair *keypair,
      struct tls_error *error, const uint8_t *staple, size_t len)
  {
  	return tls_set_mem(&keypair->ocsp_staple, &keypair->ocsp_staple_len,
  	    staple, len);
  }
  
  void
  tls_keypair_free(struct tls_keypair *keypair)
  {
  	if (keypair == NULL)
  		return;
  
  	tls_keypair_clear_key(keypair);
  
  	free(keypair->cert_mem);
  	free(keypair->ocsp_staple);
  	free(keypair->pubkey_hash);
  
  	free(keypair);
  }
  
  int
  tls_keypair_load_cert(struct tls_keypair *keypair, struct tls_error *error,
      X509 **cert)
  {
  	char *errstr = "unknown";
  	BIO *cert_bio = NULL;
  	unsigned long ssl_err;
  	int rv = -1;
  
  	X509_free(*cert);
  	*cert = NULL;
  
  	if (keypair->cert_mem == NULL) {
  		tls_error_set(error, "keypair has no certificate");
  		goto err;
  	}
  	if ((cert_bio = BIO_new_mem_buf(keypair->cert_mem,
  	    keypair->cert_len)) == NULL) {
  		tls_error_set(error, "failed to create certificate bio");
  		goto err;
  	}
  	if ((*cert = PEM_read_bio_X509(cert_bio, NULL, tls_password_cb,
  	    NULL)) == NULL) {
  		if ((ssl_err = ERR_peek_error()) != 0)
  			errstr = ERR_error_string(ssl_err, NULL);
  		tls_error_set(error, "failed to load certificate: %s", errstr);
  		goto err;
  	}
  
  	rv = 0;
  
   err:
  	BIO_free(cert_bio);
  
  	return (rv);
  }