コード例 #1
0
ファイル: stream-ssl.c プロジェクト: neujie/ovs
static int
do_ca_cert_bootstrap(struct stream *stream)
{
    struct ssl_stream *sslv = ssl_stream_cast(stream);
    STACK_OF(X509) *chain;
    X509 *cert;
    FILE *file;
    int error;
    int fd;

    chain = SSL_get_peer_cert_chain(sslv->ssl);
    if (!chain || !sk_X509_num(chain)) {
        VLOG_ERR("could not bootstrap CA cert: no certificate presented by "
                 "peer");
        return EPROTO;
    }
    cert = sk_X509_value(chain, sk_X509_num(chain) - 1);

    /* Check that 'cert' is self-signed.  Otherwise it is not a CA
     * certificate and we should not attempt to use it as one. */
    error = X509_check_issued(cert, cert);
    if (error) {
        VLOG_ERR("could not bootstrap CA cert: obtained certificate is "
                 "not self-signed (%s)",
                 X509_verify_cert_error_string(error));
        if (sk_X509_num(chain) < 2) {
            VLOG_ERR("only one certificate was received, so probably the peer "
                     "is not configured to send its CA certificate");
        }
        return EPROTO;
    }

    fd = open(ca_cert.file_name, O_CREAT | O_EXCL | O_WRONLY, 0444);
    if (fd < 0) {
        if (errno == EEXIST) {
            VLOG_INFO_RL(&rl, "reading CA cert %s created by another process",
                         ca_cert.file_name);
            stream_ssl_set_ca_cert_file__(ca_cert.file_name, true, true);
            return EPROTO;
        } else {
            VLOG_ERR("could not bootstrap CA cert: creating %s failed: %s",
                     ca_cert.file_name, ovs_strerror(errno));
            return errno;
        }
    }

    file = fdopen(fd, "w");
    if (!file) {
        error = errno;
        VLOG_ERR("could not bootstrap CA cert: fdopen failed: %s",
                 ovs_strerror(error));
        unlink(ca_cert.file_name);
        return error;
    }

    if (!PEM_write_X509(file, cert)) {
        VLOG_ERR("could not bootstrap CA cert: PEM_write_X509 to %s failed: "
                 "%s", ca_cert.file_name,
                 ERR_error_string(ERR_get_error(), NULL));
        fclose(file);
        unlink(ca_cert.file_name);
        return EIO;
    }

    if (fclose(file)) {
        error = errno;
        VLOG_ERR("could not bootstrap CA cert: writing %s failed: %s",
                 ca_cert.file_name, ovs_strerror(error));
        unlink(ca_cert.file_name);
        return error;
    }

    VLOG_INFO("successfully bootstrapped CA cert to %s", ca_cert.file_name);
    log_ca_cert(ca_cert.file_name, cert);
    bootstrap_ca_cert = false;
    ca_cert.read = true;

    /* SSL_CTX_add_client_CA makes a copy of cert's relevant data. */
    SSL_CTX_add_client_CA(ctx, cert);

    /* SSL_CTX_use_certificate() takes ownership of the certificate passed in.
     * 'cert' is owned by sslv->ssl, so we need to duplicate it. */
    cert = X509_dup(cert);
    if (!cert) {
        out_of_memory();
    }
    SSL_CTX_set_cert_store(ctx, X509_STORE_new());
    if (SSL_CTX_load_verify_locations(ctx, ca_cert.file_name, NULL) != 1) {
        VLOG_ERR("SSL_CTX_load_verify_locations: %s",
                 ERR_error_string(ERR_get_error(), NULL));
        return EPROTO;
    }
    VLOG_INFO("killing successful connection to retry using CA cert");
    return EPROTO;
}
コード例 #2
0
ファイル: jmemmgr.c プロジェクト: Achraf33/opencv
alloc_small (j_common_ptr cinfo, int pool_id, size_t sizeofobject)
/* Allocate a "small" object */
{
  my_mem_ptr mem = (my_mem_ptr) cinfo->mem;
  small_pool_ptr hdr_ptr, prev_hdr_ptr;
  char *data_ptr;
  size_t min_request, slop;

  /*
   * Round up the requested size to a multiple of ALIGN_SIZE in order
   * to assure alignment for the next object allocated in the same pool
   * and so that algorithms can straddle outside the proper area up
   * to the next alignment.
   */
  if (sizeofobject > MAX_ALLOC_CHUNK) {
    /* This prevents overflow/wrap-around in round_up_pow2() if sizeofobject
       is close to SIZE_MAX. */
    out_of_memory(cinfo, 7);
  }
  sizeofobject = round_up_pow2(sizeofobject, ALIGN_SIZE);

  /* Check for unsatisfiable request (do now to ensure no overflow below) */
  if ((sizeof(small_pool_hdr) + sizeofobject + ALIGN_SIZE - 1) >
      MAX_ALLOC_CHUNK)
    out_of_memory(cinfo, 1);    /* request exceeds malloc's ability */

  /* See if space is available in any existing pool */
  if (pool_id < 0 || pool_id >= JPOOL_NUMPOOLS)
    ERREXIT1(cinfo, JERR_BAD_POOL_ID, pool_id); /* safety check */
  prev_hdr_ptr = NULL;
  hdr_ptr = mem->small_list[pool_id];
  while (hdr_ptr != NULL) {
    if (hdr_ptr->bytes_left >= sizeofobject)
      break;                    /* found pool with enough space */
    prev_hdr_ptr = hdr_ptr;
    hdr_ptr = hdr_ptr->next;
  }

  /* Time to make a new pool? */
  if (hdr_ptr == NULL) {
    /* min_request is what we need now, slop is what will be leftover */
    min_request = sizeof(small_pool_hdr) + sizeofobject + ALIGN_SIZE - 1;
    if (prev_hdr_ptr == NULL)   /* first pool in class? */
      slop = first_pool_slop[pool_id];
    else
      slop = extra_pool_slop[pool_id];
    /* Don't ask for more than MAX_ALLOC_CHUNK */
    if (slop > (size_t) (MAX_ALLOC_CHUNK-min_request))
      slop = (size_t) (MAX_ALLOC_CHUNK-min_request);
    /* Try to get space, if fail reduce slop and try again */
    for (;;) {
      hdr_ptr = (small_pool_ptr) jpeg_get_small(cinfo, min_request + slop);
      if (hdr_ptr != NULL)
        break;
      slop /= 2;
      if (slop < MIN_SLOP)      /* give up when it gets real small */
        out_of_memory(cinfo, 2); /* jpeg_get_small failed */
    }
    mem->total_space_allocated += min_request + slop;
    /* Success, initialize the new pool header and add to end of list */
    hdr_ptr->next = NULL;
    hdr_ptr->bytes_used = 0;
    hdr_ptr->bytes_left = sizeofobject + slop;
    if (prev_hdr_ptr == NULL)   /* first pool in class? */
      mem->small_list[pool_id] = hdr_ptr;
    else
      prev_hdr_ptr->next = hdr_ptr;
  }

  /* OK, allocate the object from the current pool */
  data_ptr = (char *) hdr_ptr; /* point to first data byte in pool... */
  data_ptr += sizeof(small_pool_hdr); /* ...by skipping the header... */
  if ((size_t)data_ptr % ALIGN_SIZE) /* ...and adjust for alignment */
    data_ptr += ALIGN_SIZE - (size_t)data_ptr % ALIGN_SIZE;
  data_ptr += hdr_ptr->bytes_used; /* point to place for object */
  hdr_ptr->bytes_used += sizeofobject;
  hdr_ptr->bytes_left -= sizeofobject;

  return (void *) data_ptr;
}
コード例 #3
0
static void moom_callback(struct work_struct *ignored)
{
	out_of_memory(node_zonelist(0, GFP_KERNEL), GFP_KERNEL, 0);
}