Class: Mongo::Crypt::Binding Private

Inherits:
Object
  • Object
show all
Extended by:
FFI::Library
Defined in:
lib/mongo/crypt/binding.rb

Overview

This class is part of a private API. You should avoid using this class if possible, as it may be removed or be changed in the future.

A Ruby binding for the libmongocrypt C library

Constant Summary collapse

MIN_LIBMONGOCRYPT_VERSION =

This constant is part of a private API. You should avoid using this constant if possible, as it may be removed or be changed in the future.

Minimum version of libmongocrypt required by this version of the driver. An attempt to use the driver with any previous version of libmongocrypt will cause a ‘LoadError`.

Gem::Version.new('1.12.0')

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.check_ctx_status(context) ⇒ nil

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Raise a Mongo::Error::CryptError based on the status of the underlying mongocrypt_ctx_t object.

Returns:

  • (nil) —

    Always nil.



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# File 'lib/mongo/crypt/binding.rb', line 1815

def self.check_ctx_status(context)
  do_raise = if block_given?
               !yield
             else
               true
             end

  return unless do_raise

  status = Status.new

  mongocrypt_ctx_status(context.ctx_p, status.ref)
  status.raise_crypt_error
end

.check_kms_ctx_status(kms_context) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

If the provided block returns false, raise a CryptError with the status information from the provided KmsContext object.

Parameters:

Raises:



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# File 'lib/mongo/crypt/binding.rb', line 1105

def self.check_kms_ctx_status(kms_context)
  return if yield

  status = Status.new

  mongocrypt_kms_ctx_status(kms_context.kms_ctx_p, status.ref)
  status.raise_crypt_error(kms: true)
end

.check_status(handle) ⇒ nil

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Raise a Mongo::Error::CryptError based on the status of the underlying mongocrypt_t object.

Returns:

  • (nil) —

    Always nil.



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# File 'lib/mongo/crypt/binding.rb', line 1802

def self.check_status(handle)
  return if yield

  status = Status.new

  mongocrypt_status(handle.ref, status.ref)
  status.raise_crypt_error
end

.crypt_shared_lib_version(handle) ⇒ Integer

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Obtain a 64-bit constant encoding the version of the loaded crypt_shared library, if available.

The version is encoded as four 16-bit numbers, from high to low:

  • Major version

  • Minor version

  • Revision

  • Reserved

For example, version 6.2.1 would be encoded as: 0x0006’0002’0001’0000

Parameters:

Returns:

  • (Integer) —

    A 64-bit encoded version number, with the version encoded as four sixteen-bit integers, or zero if no crypt_shared library was loaded.



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# File 'lib/mongo/crypt/binding.rb', line 1608

def self.crypt_shared_lib_version(handle)
  mongocrypt_crypt_shared_lib_version(handle.ref)
end

.ctx_datakey_init(context) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Initialize the Context to create a data key

Parameters:

Raises:



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# File 'lib/mongo/crypt/binding.rb', line 623

def self.ctx_datakey_init(context)
  check_ctx_status(context) do
    mongocrypt_ctx_datakey_init(context.ctx_p)
  end
end

.ctx_decrypt_init(context, command) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Initialize the Context for auto-decryption

Parameters:

Raises:



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# File 'lib/mongo/crypt/binding.rb', line 784

def self.ctx_decrypt_init(context, command)
  validate_document(command)
  data = command.to_bson.to_s
  Binary.wrap_string(data) do |data_p|
    check_ctx_status(context) do
      mongocrypt_ctx_decrypt_init(context.ctx_p, data_p)
    end
  end
end

.ctx_encrypt_init(context, db_name, command) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Initialize the Context for auto-encryption

Parameters:

  • context (Mongo::Crypt::Context)
  • db_name (String) —

    The name of the database against which the encrypted command is being performed

  • command (Hash) —

    The command to be encrypted

Raises:



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# File 'lib/mongo/crypt/binding.rb', line 690

def self.ctx_encrypt_init(context, db_name, command)
  validate_document(command)
  data = command.to_bson.to_s
  Binary.wrap_string(data) do |data_p|
    check_ctx_status(context) do
      mongocrypt_ctx_encrypt_init(context.ctx_p, db_name, -1, data_p)
    end
  end
end

.ctx_explicit_decrypt_init(context, doc) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Initialize the Context for explicit decryption

Parameters:

Raises:



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# File 'lib/mongo/crypt/binding.rb', line 814

def self.ctx_explicit_decrypt_init(context, doc)
  validate_document(doc)
  data = doc.to_bson.to_s
  Binary.wrap_string(data) do |data_p|
    check_ctx_status(context) do
      mongocrypt_ctx_explicit_decrypt_init(context.ctx_p, data_p)
    end
  end
end

.ctx_explicit_encrypt_expression_init(context, doc) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Initialize the Context for explicit expression encryption.

Parameters:

Raises:



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# File 'lib/mongo/crypt/binding.rb', line 758

def self.ctx_explicit_encrypt_expression_init(context, doc)
  validate_document(doc)
  data = doc.to_bson.to_s
  Binary.wrap_string(data) do |data_p|
    check_ctx_status(context) do
      mongocrypt_ctx_explicit_encrypt_expression_init(context.ctx_p, data_p)
    end
  end
end

.ctx_explicit_encrypt_init(context, doc) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Initialize the Context for explicit encryption

Parameters:

Raises:



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# File 'lib/mongo/crypt/binding.rb', line 724

def self.ctx_explicit_encrypt_init(context, doc)
  validate_document(doc)
  data = doc.to_bson.to_s
  Binary.wrap_string(data) do |data_p|
    check_ctx_status(context) do
      mongocrypt_ctx_explicit_encrypt_init(context.ctx_p, data_p)
    end
  end
end

.ctx_finalize(context) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Finalize the state machine represented by the Context

Parameters:

Raises:



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# File 'lib/mongo/crypt/binding.rb', line 1206

def self.ctx_finalize(context)
  binary = Binary.new

  check_ctx_status(context) do
    mongocrypt_ctx_finalize(context.ctx_p, binary.ref)
  end

  # TODO: since the binary references a C pointer, and ByteBuffer is
  # written in C in MRI, we could omit a copy of the data by making
  # ByteBuffer reference the string that is owned by libmongocrypt.
  BSON::Document.from_bson(BSON::ByteBuffer.new(binary.to_s), mode: context.bson_mode)
end

.ctx_kms_done(context) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Indicate to libmongocrypt that it will receive no more KMS replies.

Parameters:

Raises:



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# File 'lib/mongo/crypt/binding.rb', line 1183

def self.ctx_kms_done(context)
  check_ctx_status(context) do
    mongocrypt_ctx_kms_done(context.ctx_p)
  end
end

.ctx_mongo_feed(context, doc) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Feed a response from the driver back to libmongocrypt

Parameters:

Raises:



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# File 'lib/mongo/crypt/binding.rb', line 895

def self.ctx_mongo_feed(context, doc)
  validate_document(doc)
  data = doc.to_bson.to_s
  Binary.wrap_string(data) do |data_p|
    check_ctx_status(context) do
      mongocrypt_ctx_mongo_feed(context.ctx_p, data_p)
    end
  end
end

.ctx_mongo_op(context) ⇒ BSON::Document

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns a BSON::Document representing an operation that the driver must perform on behalf of libmongocrypt to get the information it needs in order to continue with encryption/decryption (for example, a filter for a key vault query).

Parameters:

Returns:

  • (BSON::Document) —

    The operation that the driver must perform

Raises:

  • (Mongo::Crypt) —

    If there is an error getting the operation



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# File 'lib/mongo/crypt/binding.rb', line 866

def self.ctx_mongo_op(context)
  binary = Binary.new

  check_ctx_status(context) do
    mongocrypt_ctx_mongo_op(context.ctx_p, binary.ref)
  end

  # TODO: since the binary references a C pointer, and ByteBuffer is
  # written in C in MRI, we could omit a copy of the data by making
  # ByteBuffer reference the string that is owned by libmongocrypt.
  BSON::Document.from_bson(BSON::ByteBuffer.new(binary.to_s), mode: :bson)
end

.ctx_next_kms_ctx(context) ⇒ Mongo::Crypt::KmsContext | nil

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Return a new KmsContext object needed by a Context object.

Parameters:

Returns:

  • (Mongo::Crypt::KmsContext | nil) —

    The KmsContext needed to fetch an AWS master key or nil, if no KmsContext is needed



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# File 'lib/mongo/crypt/binding.rb', line 927

def self.ctx_next_kms_ctx(context)
  kms_ctx_p = mongocrypt_ctx_next_kms_ctx(context.ctx_p)

  if kms_ctx_p.null?
    nil
  else
    KmsContext.new(kms_ctx_p)
  end
end

.ctx_provide_kms_providers(context, kms_providers) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Call in response to the MONGOCRYPT_CTX_NEED_KMS_CREDENTIALS state to set per-context KMS provider settings. These follow the same format as ‘mongocrypt_setopt_kms_providers“. If no keys are present in the BSON input, the KMS provider settings configured for the mongocrypt_t at initialization are used.

Parameters:

  • context (Mongo::Crypt::Context) —

    Encryption context.

  • kms_providers (BSON::Document) —

    BSON document mapping the KMS provider names to credentials.

Raises:



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# File 'lib/mongo/crypt/binding.rb', line 1681

def self.ctx_provide_kms_providers(context, kms_providers)
  validate_document(kms_providers)
  data = kms_providers.to_bson.to_s
  Binary.wrap_string(data) do |data_p|
    check_ctx_status(context) do
      mongocrypt_ctx_provide_kms_providers(context.ctx_p, data_p)
    end
  end
end

.ctx_rewrap_many_datakey_init(context, filter) ⇒ Boolean

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Initialize a context to rewrap datakeys.

Parameters:

  • context (Mongo::Crypt::Context)
  • filter (BSON::Document) —

    BSON Document that represents filter to use for the find command on the key vault collection to retrieve datakeys to rewrap.

Returns:

  • (Boolean) —

    Whether the initialization was successful.



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# File 'lib/mongo/crypt/binding.rb', line 654

def self.ctx_rewrap_many_datakey_init(context, filter)
  filter_data = filter.to_bson.to_s
  Binary.wrap_string(filter_data) do |data_p|
    check_ctx_status(context) do
      mongocrypt_ctx_rewrap_many_datakey_init(context.ctx_p, data_p)
    end
  end
end

.ctx_setopt_algorithm(context, name) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Set the algorithm on the context

Parameters:

  • context (Mongo::Crypt::Context)
  • name (String) —

    The algorithm name. Valid values are:

    • “AEAD_AES_256_CBC_HMAC_SHA_512-Deterministic”

    • “AEAD_AES_256_CBC_HMAC_SHA_512-Random”

Raises:



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# File 'lib/mongo/crypt/binding.rb', line 567

def self.ctx_setopt_algorithm(context, name)
  check_ctx_status(context) do
    mongocrypt_ctx_setopt_algorithm(context.ctx_p, name, -1)
  end
end

.ctx_setopt_algorithm_range(context, opts) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Note:

The Range algorithm is experimental only. It is not intended for

Set options for explicit encryption with the “range” algorithm.

public use.

Parameters:

Raises:



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# File 'lib/mongo/crypt/binding.rb', line 1788

def self.ctx_setopt_algorithm_range(context, opts)
  validate_document(opts)
  data = opts.to_bson.to_s
  Binary.wrap_string(data) do |data_p|
    check_ctx_status(context) do
      mongocrypt_ctx_setopt_algorithm_range(context.ctx_p, data_p)
    end
  end
end

.ctx_setopt_contention_factor(context, factor) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Set the contention factor used for explicit encryption. The contention factor is only used for indexed FLE 2 encryption.

Parameters:

  • context (Mongo::Crypt::Context) —

    Explicit encryption context.

  • factor (Integer) —

    Contention factor used for explicit encryption.

Raises:



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# File 'lib/mongo/crypt/binding.rb', line 1751

def self.ctx_setopt_contention_factor(context, factor)
  check_ctx_status(context) do
    mongocrypt_ctx_setopt_contention_factor(context.ctx_p, factor)
  end
end

.ctx_setopt_key_alt_names(context, key_alt_names) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Set multiple alternate key names on data key creation

Parameters:

  • context (Mongo::Crypt::Context) —

    A DataKeyContext

  • key_alt_names (Array) —

    An array of alternate key names as strings

Raises:



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# File 'lib/mongo/crypt/binding.rb', line 498

def self.ctx_setopt_key_alt_names(context, key_alt_names)
  key_alt_names.each do |key_alt_name|
    key_alt_name_bson = { keyAltName: key_alt_name }.to_bson.to_s

    Binary.wrap_string(key_alt_name_bson) do |key_alt_name_p|
      check_ctx_status(context) do
        mongocrypt_ctx_setopt_key_alt_name(context.ctx_p, key_alt_name_p)
      end
    end
  end
end

.ctx_setopt_key_encryption_key(context, key_document) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Set key encryption key document for creating a data key.

Parameters:

  • context (Mongo::Crypt::Context)
  • key_document (BSON::Document) —

    BSON document representing the key encryption key document with an additional “provider” field.

Raises:



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# File 'lib/mongo/crypt/binding.rb', line 596

def self.ctx_setopt_key_encryption_key(context, key_document)
  validate_document(key_document)
  data = key_document.to_bson.to_s
  Binary.wrap_string(data) do |data_p|
    check_ctx_status(context) do
      mongocrypt_ctx_setopt_key_encryption_key(context.ctx_p, data_p)
    end
  end
end

.ctx_setopt_key_id(context, key_id) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Sets the key id option on an explicit encryption context.

Parameters:

Raises:



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# File 'lib/mongo/crypt/binding.rb', line 465

def self.ctx_setopt_key_id(context, key_id)
  Binary.wrap_string(key_id) do |key_id_p|
    check_ctx_status(context) do
      mongocrypt_ctx_setopt_key_id(context.ctx_p, key_id_p)
    end
  end
end

.ctx_setopt_key_material(context, key_material) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Set set a custom key material to use for

encrypting data.

Parameters:

  • context (Mongo::Crypt::Context) —

    A DataKeyContext

  • key_material (BSON::Binary) —

    96 bytes of custom key material

Raises:



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# File 'lib/mongo/crypt/binding.rb', line 533

def self.ctx_setopt_key_material(context, key_material)
  data = { 'keyMaterial' => key_material }.to_bson.to_s
  Binary.wrap_string(data) do |data_p|
    check_ctx_status(context) do
      mongocrypt_ctx_setopt_key_material(context.ctx_p, data_p)
    end
  end
end

.ctx_setopt_query_type(context, query_type) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Set the query type to use for FLE 2 explicit encryption. The query type is only used for indexed FLE 2 encryption.

Parameters:

  • context (Mongo::Crypt::Context) —

    Explicit encryption context.

  • :mongocrypt_query_type (String) —

    query_type Type of the query.

Raises:



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# File 'lib/mongo/crypt/binding.rb', line 1719

def self.ctx_setopt_query_type(context, query_type)
  check_ctx_status(context) do
    mongocrypt_ctx_setopt_query_type(context.ctx_p, query_type, -1)
  end
end

.get_binary_data_direct(mongocrypt_binary_t) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/mongo/crypt/binding.rb', line 179

def self.get_binary_data_direct(mongocrypt_binary_t)
  mongocrypt_binary_t.get_pointer(0)
end

.get_binary_len_direct(mongocrypt_binary_t) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/mongo/crypt/binding.rb', line 183

def self.get_binary_len_direct(mongocrypt_binary_t)
  mongocrypt_binary_t.get_uint32(FFI::NativeType::POINTER.size)
end

.init(handle) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Initialize the Mongo::Crypt::Handle object

Parameters:

Raises:



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# File 'lib/mongo/crypt/binding.rb', line 405

def self.init(handle)
  check_status(handle) do
    mongocrypt_init(handle.ref)
  end
end

.kms_ctx_bytes_needed(kms_context) ⇒ Integer

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Get the number of bytes needed by the KmsContext.

Parameters:

Returns:

  • (Integer) —

    The number of bytes needed



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# File 'lib/mongo/crypt/binding.rb', line 1061

def self.kms_ctx_bytes_needed(kms_context)
  mongocrypt_kms_ctx_bytes_needed(kms_context.kms_ctx_p)
end

.kms_ctx_endpoint(kms_context) ⇒ String | nil

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Get the hostname with which to connect over TLS to get information about the AWS master key.

Parameters:

Returns:

  • (String | nil) —

    The hostname, or nil if none exists

Raises:



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# File 'lib/mongo/crypt/binding.rb', line 1037

def self.kms_ctx_endpoint(kms_context)
  ptr = FFI::MemoryPointer.new(:pointer, 1)

  check_kms_ctx_status(kms_context) do
    mongocrypt_kms_ctx_endpoint(kms_context.kms_ctx_p, ptr)
  end

  str_ptr = ptr.read_pointer
  str_ptr.null? ? nil : str_ptr.read_string.force_encoding('UTF-8')
end

.kms_ctx_fail(kms_context) ⇒ true, false

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Check whether the last failed request for the KMS context may be retried.

Parameters:

Returns:

  • (true, false) —

    whether the failed request may be retried.



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# File 'lib/mongo/crypt/binding.rb', line 1146

def self.kms_ctx_fail(kms_context)
  mongocrypt_kms_ctx_fail(kms_context.kms_ctx_p)
end

.kms_ctx_feed(kms_context, bytes) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Feed replies from the KMS back to libmongocrypt.

Parameters:

Raises:



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# File 'lib/mongo/crypt/binding.rb', line 1081

def self.kms_ctx_feed(kms_context, bytes)
  check_kms_ctx_status(kms_context) do
    Binary.wrap_string(bytes) do |bytes_p|
      mongocrypt_kms_ctx_feed(kms_context.kms_ctx_p, bytes_p)
    end
  end
end

.kms_ctx_get_kms_provider(kms_context) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Get the KMS provider identifier associated with this KMS request.

This is used to conditionally configure TLS connections based on the KMS request. It is useful for KMIP, which authenticates with a client certificate.

Parameters:

  • kms (FFI::Pointer) —

    Pointer mongocrypt_kms_ctx_t object.



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# File 'lib/mongo/crypt/binding.rb', line 968

def self.kms_ctx_get_kms_provider(kms_context)
  len_ptr = FFI::MemoryPointer.new(:uint32, 1)
  provider = mongocrypt_kms_ctx_get_kms_provider(
    kms_context.kms_ctx_p,
    len_ptr
  )
  if len_ptr.nil?
    nil
  else
    len = if BSON::Environment.jruby?
            # JRuby FFI implementation does not have `read(type)` method, but it
            # has this `get_uint32`.
            len_ptr.get_uint32
          else
            # For MRI we use a documented `read` method - https://www.rubydoc.info/github/ffi/ffi/FFI%2FPointer:read
            len_ptr.read(:uint32)
          end
    provider.read_string(len).to_sym
  end
end

.kms_ctx_message(kms_context) ⇒ String

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Get the HTTP message needed to fetch the AWS KMS master key from a KmsContext object.

Parameters:

Returns:

  • (String) —

    The HTTP message

Raises:



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# File 'lib/mongo/crypt/binding.rb', line 1008

def self.kms_ctx_message(kms_context)
  binary = Binary.new

  check_kms_ctx_status(kms_context) do
    mongocrypt_kms_ctx_message(kms_context.kms_ctx_p, binary.ref)
  end

  binary.to_s
end

.kms_ctx_setopt_retry_kms(handle, value) ⇒ true, fale

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Enable or disable KMS retry behavior.

Parameters:

Returns:

  • (true, fale) —

    true is the option was set, otherwise false.



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# File 'lib/mongo/crypt/binding.rb', line 1165

def self.kms_ctx_setopt_retry_kms(handle, value)
  mongocrypt_setopt_retry_kms(handle.ref, value)
end

.kms_ctx_usleep(kms_context) ⇒ Integer

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns number of milliseconds to sleep before sending KMS request for the given KMS context.

Parameters:

Returns:

  • (Integer) —

    A 64-bit encoded number of microseconds to sleep.



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# File 'lib/mongo/crypt/binding.rb', line 1129

def self.kms_ctx_usleep(kms_context)
  mongocrypt_kms_ctx_usleep(kms_context.kms_ctx_p)
end

.mongocrypt_binary_data(binary) ⇒ FFI::Pointer

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Get the pointer to the underlying data for the mongocrypt_binary_t.

Parameters:

  • binary (FFI::Pointer) —

    A pointer to a mongocrypt_binary_t object.

Returns:

  • (FFI::Pointer) —

    A pointer to the data array.



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# File 'lib/mongo/crypt/binding.rb', line 169

attach_function :mongocrypt_binary_data, [ :pointer ], :pointer

.mongocrypt_binary_destroy(binary) ⇒ nil

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Destroy the mongocrypt_binary_t object.

Parameters:

  • binary (FFI::Pointer) —

    A pointer to a mongocrypt_binary_t object.

Returns:

  • (nil) —

    Always nil.



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# File 'lib/mongo/crypt/binding.rb', line 193

attach_function :mongocrypt_binary_destroy, [ :pointer ], :void

.mongocrypt_binary_len(binary) ⇒ Integer

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Get the length of the underlying data array.

Parameters:

  • binary (FFI::Pointer) —

    A pointer to a mongocrypt_binary_t object.

Returns:

  • (Integer) —

    The length of the data array.



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# File 'lib/mongo/crypt/binding.rb', line 177

attach_function :mongocrypt_binary_len, [ :pointer ], :int

.mongocrypt_binary_new ⇒ FFI::Pointer

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Creates a new mongocrypt_binary_t object (a non-owning view of a byte

array).

Returns:

  • (FFI::Pointer) —

    A pointer to the newly-created mongocrypt_binary_t object.



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# File 'lib/mongo/crypt/binding.rb', line 145

attach_function :mongocrypt_binary_new, [], :pointer

.mongocrypt_binary_new_from_data(data, len) ⇒ FFI::Pointer

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Create a new mongocrypt_binary_t object that maintains a pointer to

the specified byte array.

Parameters:

  • data (FFI::Pointer) —

    A pointer to an array of bytes; the data is not copied and must outlive the mongocrypt_binary_t object.

  • len (Integer) —

    The length of the array argument.

Returns:

  • (FFI::Pointer) —

    A pointer to the newly-created mongocrypt_binary_t object.



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# File 'lib/mongo/crypt/binding.rb', line 157

attach_function(
  :mongocrypt_binary_new_from_data,
  %i[pointer int],
  :pointer
)

.mongocrypt_crypt_shared_lib_version(crypt) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/mongo/crypt/binding.rb', line 1586

attach_function(
  :mongocrypt_crypt_shared_lib_version,
  [ :pointer ],
  :uint64
)

.mongocrypt_ctx_datakey_init(ctx, filter) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/mongo/crypt/binding.rb', line 616

attach_function :mongocrypt_ctx_datakey_init, [ :pointer ], :bool

.mongocrypt_ctx_decrypt_init(ctx, doc) ⇒ Boolean

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Initializes the ctx for auto-decryption.

Parameters:

  • ctx (FFI::Pointer) —

    A pointer to a mongocrypt_ctx_t object.

  • doc (FFI::Pointer) —

    A pointer to a mongocrypt_binary_t object that references the document to be decrypted as a BSON binary string.

Returns:

  • (Boolean) —

    Whether the initialization was successful.



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# File 'lib/mongo/crypt/binding.rb', line 776

attach_function :mongocrypt_ctx_decrypt_init, %i[pointer pointer], :bool

.mongocrypt_ctx_destroy(ctx) ⇒ nil

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Destroy the reference to the mongocrypt_ctx_t object.

Parameters:

  • ctx (FFI::Pointer) —

    A pointer to a mongocrypt_ctx_t object.

Returns:

  • (nil) —

    Always nil.



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# File 'lib/mongo/crypt/binding.rb', line 1225

attach_function :mongocrypt_ctx_destroy, [ :pointer ], :void

.mongocrypt_ctx_encrypt_init(ctx, db, db_len, cmd) ⇒ Boolean

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Note:

This method expects the passed-in BSON to be in the format: { “v”: BSON value to decrypt }.

Initializes the ctx for auto-encryption.

Parameters:

  • ctx (FFI::Pointer) —

    A pointer to a mongocrypt_ctx_t object.

  • db (String) —

    The database name.

  • db_len (Integer) —

    The length of the database name argument (or -1 for a null-terminated string).

  • cmd (FFI::Pointer) —

    A pointer to a mongocrypt_binary_t object that references the database command as a binary string.

Returns:

  • (Boolean) —

    Whether the initialization was successful.



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# File 'lib/mongo/crypt/binding.rb', line 676

attach_function(
  :mongocrypt_ctx_encrypt_init,
  %i[pointer string int pointer],
  :bool
)

.mongocrypt_ctx_explicit_decrypt_init(ctx, msg) ⇒ Boolean

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Initializes the ctx for explicit decryption.

Parameters:

  • ctx (FFI::Pointer) —

    A pointer to a mongocrypt_ctx_t object.

  • msg (FFI::Pointer) —

    A pointer to a mongocrypt_binary_t object that references the message to be decrypted as a BSON binary string.

Returns:

  • (Boolean) —

    Whether the initialization was successful.



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# File 'lib/mongo/crypt/binding.rb', line 802

attach_function(
  :mongocrypt_ctx_explicit_decrypt_init,
  %i[pointer pointer],
  :bool
)

.mongocrypt_ctx_explicit_encrypt_init(ctx, msg) ⇒ Boolean

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Note:

Before calling this method, set a key_id, key_alt_name (optional), and encryption algorithm using the following methods: mongocrypt_ctx_setopt_key_id, mongocrypt_ctx_setopt_key_alt_name, and mongocrypt_ctx_setopt_algorithm.

Initializes the ctx for explicit expression encryption.

Parameters:

  • ctx (FFI::Pointer) —

    A pointer to a mongocrypt_ctx_t object.

  • msg (FFI::Pointer) —

    A pointer to a mongocrypt_binary_t object that references the message to be encrypted as a binary string.

Returns:

  • (Boolean) —

    Whether the initialization was successful.



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# File 'lib/mongo/crypt/binding.rb', line 712

attach_function(
  :mongocrypt_ctx_explicit_encrypt_init,
  %i[pointer pointer],
  :bool
)

.mongocrypt_ctx_finalize(ctx, op_bson) ⇒ Boolean

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Perform the final encryption or decryption and return a BSON document.

Parameters:

  • ctx (FFI::Pointer) —

    A pointer to a mongocrypt_ctx_t object.

  • op_bson (FFI::Pointer) —

    (out param) A pointer to a mongocrypt_binary_t object that will have a reference to the final encrypted BSON document.

Returns:

  • (Boolean) —

    A boolean indicating the success of the operation.



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# File 'lib/mongo/crypt/binding.rb', line 1198

attach_function :mongocrypt_ctx_finalize, %i[pointer pointer], :void

.mongocrypt_ctx_mongo_done(ctx) ⇒ Boolean

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Indicate to libmongocrypt that the driver is done feeding replies.

Parameters:

  • ctx (FFI::Pointer) —

    A pointer to a mongocrypt_ctx_t object.

Returns:

  • (Boolean) —

    A boolean indicating the success of the operation.



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# File 'lib/mongo/crypt/binding.rb', line 911

attach_function :mongocrypt_ctx_mongo_done, [ :pointer ], :bool

.mongocrypt_ctx_mongo_feed(ctx, reply) ⇒ Boolean

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Feed a BSON reply to libmongocrypt.

Parameters:

  • ctx (FFI::Pointer) —

    A pointer to a mongocrypt_ctx_t object.

  • reply (FFI::Pointer) —

    A mongocrypt_binary_t object that references the BSON reply to feed to libmongocrypt.

Returns:

  • (Boolean) —

    A boolean indicating the success of the operation.



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# File 'lib/mongo/crypt/binding.rb', line 887

attach_function :mongocrypt_ctx_mongo_feed, %i[pointer pointer], :bool

.mongocrypt_ctx_mongo_next_kms_ctx(ctx) ⇒ FFI::Pointer

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Return a pointer to a mongocrypt_kms_ctx_t object or NULL.

Parameters:

  • ctx (FFI::Pointer) —

    A pointer to a mongocrypt_ctx_t object.

Returns:

  • (FFI::Pointer) —

    A pointer to a mongocrypt_kms_ctx_t object.



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# File 'lib/mongo/crypt/binding.rb', line 919

attach_function :mongocrypt_ctx_next_kms_ctx, [ :pointer ], :pointer

.mongocrypt_ctx_mongo_op(ctx, op_bson) ⇒ Boolean

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Get a BSON operation for the driver to run against the MongoDB

collection, the key vault database, or mongocryptd.

Parameters:

  • ctx (FFI::Pointer) —

    A pointer to a mongocrypt_ctx_t object.

  • op_bson (FFI::Pointer) —

    (out param) A pointer to a mongocrypt_binary_t object that will have a reference to the BSON operation written to it by libmongocrypt.

Returns:

  • (Boolean) —

    A boolean indicating the success of the operation.



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# File 'lib/mongo/crypt/binding.rb', line 855

attach_function :mongocrypt_ctx_mongo_op, %i[pointer pointer], :bool

.mongocrypt_ctx_new(crypt) ⇒ FFI::Pointer

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Create a new mongocrypt_ctx_t object (a wrapper for the libmongocrypt

state machine).

Parameters:

  • crypt (FFI::Pointer) —

    A pointer to a mongocrypt_t object.

Returns:

  • (FFI::Pointer) —

    A new mongocrypt_ctx_t object.



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# File 'lib/mongo/crypt/binding.rb', line 436

attach_function :mongocrypt_ctx_new, [ :pointer ], :pointer

.mongocrypt_ctx_provide_kms_providers(ctx, kms_providers) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/mongo/crypt/binding.rb', line 1664

attach_function(
  :mongocrypt_ctx_provide_kms_providers,
  %i[pointer pointer],
  :bool
)

.mongocrypt_ctx_setopt_algorithm(ctx, algorithm, len) ⇒ Boolean

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Note:

Do not initialize ctx before calling this method.

Set the algorithm used for explicit encryption.

Parameters:

  • ctx (FFI::Pointer) —

    A pointer to a mongocrypt_ctx_t object.

  • algorithm (String) —

    The algorithm name. Valid values are:

    • “AEAD_AES_256_CBC_HMAC_SHA_512-Deterministic”

    • “AEAD_AES_256_CBC_HMAC_SHA_512-Random”

  • len (Integer) —

    The length of the algorithm string.

Returns:

  • (Boolean) —

    Whether the option was successfully set.



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# File 'lib/mongo/crypt/binding.rb', line 553

attach_function(
  :mongocrypt_ctx_setopt_algorithm,
  %i[pointer string int],
  :bool
)

.mongocrypt_ctx_setopt_algorithm_range(ctx, opts) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/mongo/crypt/binding.rb', line 1770

attach_function(
  :mongocrypt_ctx_setopt_algorithm_range,
  %i[
    pointer
    pointer
  ],
  :bool
)

.mongocrypt_ctx_setopt_contention_factor(ctx, contention_factor) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/mongo/crypt/binding.rb', line 1735

attach_function(
  :mongocrypt_ctx_setopt_contention_factor,
  %i[
    pointer
    int64
  ],
  :bool
)

.mongocrypt_ctx_setopt_key_alt_name(ctx, binary) ⇒ Boolean

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Note:

Do not initialize ctx before calling this method.

When creating a data key, set an alternate name on that key. When

performing explicit encryption, specifying which data key to use for
encryption based on its keyAltName field.

Parameters:

  • ctx (FFI::Pointer) —

    A pointer to a mongocrypt_ctx_t object.

  • binary (FFI::Pointer) —

    A pointer to a mongocrypt_binary_t object that references a BSON document in the format { “keyAltName”: <BSON UTF8 value> }.

Returns:

  • (Boolean) —

    Whether the alternative name was successfully set.



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# File 'lib/mongo/crypt/binding.rb', line 485

attach_function(
  :mongocrypt_ctx_setopt_key_alt_name,
  %i[pointer pointer],
  :bool
)

.mongocrypt_ctx_setopt_key_encryption_key(ctx) ⇒ Boolean

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Note:

Do not initialize ctx before calling this method.

Set key encryption key document for creating a data key.

Parameters:

  • ctx (FFI::Pointer) —

    A pointer to a mongocrypt_ctx_t object.

  • bin (FFI::Pointer) —

    A pointer to a mongocrypt_binary_t object that references a BSON document representing the key encryption key document with an additional “provider” field.

Returns:

  • (Boolean) —

    Whether the option was successfully set.



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# File 'lib/mongo/crypt/binding.rb', line 583

attach_function(
  :mongocrypt_ctx_setopt_key_encryption_key,
  %i[pointer pointer],
  :bool
)

.mongocrypt_ctx_setopt_key_id(ctx, key_id) ⇒ Boolean

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Note:

Do not initialize ctx before calling this method.

Set the key id used for explicit encryption.

Parameters:

  • ctx (FFI::Pointer) —

    A pointer to a mongocrypt_ctx_t object.

  • key_id (FFI::Pointer) —

    A pointer to a mongocrypt_binary_t object that references the 16-byte key-id.

Returns:

  • (Boolean) —

    Whether the option was successfully set.



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# File 'lib/mongo/crypt/binding.rb', line 457

attach_function :mongocrypt_ctx_setopt_key_id, %i[pointer pointer], :bool

.mongocrypt_ctx_setopt_key_material(ctx, binary) ⇒ Boolean

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Note:

Do not initialize ctx before calling this method.

When creating a data key, set a custom key material to use for

encrypting data.

Parameters:

  • ctx (FFI::Pointer) —

    A pointer to a mongocrypt_ctx_t object.

  • binary (FFI::Pointer) —

    A pointer to a mongocrypt_binary_t object that references the data encryption key to use.

Returns:

  • (Boolean) —

    Whether the custom key material was successfully set.



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# File 'lib/mongo/crypt/binding.rb', line 520

attach_function(
  :mongocrypt_ctx_setopt_key_material,
  %i[pointer pointer],
  :bool
)

.mongocrypt_ctx_setopt_query_type(ctx, mongocrypt_query_type) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/mongo/crypt/binding.rb', line 1702

attach_function(
  :mongocrypt_ctx_setopt_query_type,
  %i[
    pointer
    string
    int
  ],
  :bool
)

.mongocrypt_ctx_state(ctx) ⇒ Symbol

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Get the current state of the ctx.

Parameters:

  • ctx (FFI::Pointer) —

    A pointer to a mongocrypt_ctx_t object.

Returns:

  • (Symbol) —

    The current state, will be one of the values defined by the mongocrypt_ctx_state enum.



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# File 'lib/mongo/crypt/binding.rb', line 843

attach_function :mongocrypt_ctx_state, [ :pointer ], :mongocrypt_ctx_state

.mongocrypt_ctx_status(ctx, status) ⇒ Boolean

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Set the status information from the mongocrypt_ctx_t object on the

mongocrypt_status_t object.

Parameters:

  • ctx (FFI::Pointer) —

    A pointer to a mongocrypt_ctx_t object.

  • status (FFI::Pointer) —

    A pointer to a mongocrypt_status_t object.

Returns:

  • (Boolean) —

    Whether the status was successfully set.



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# File 'lib/mongo/crypt/binding.rb', line 446

attach_function :mongocrypt_ctx_status, %i[pointer pointer], :bool

.mongocrypt_destroy(crypt) ⇒ nil

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Destroy the reference the mongocrypt_t object.

Parameters:

  • crypt (FFI::Pointer) —

    A pointer to a mongocrypt_t object.

Returns:

  • (nil) —

    Always nil.



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# File 'lib/mongo/crypt/binding.rb', line 427

attach_function :mongocrypt_destroy, [ :pointer ], :void

.mongocrypt_init(crypt) ⇒ Boolean

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Initialize the mongocrypt_t object.

Parameters:

  • crypt (FFI::Pointer) —

    A pointer to a mongocrypt_t object.

Returns:

  • (Boolean) —

    Returns whether the crypt was initialized successfully.



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# File 'lib/mongo/crypt/binding.rb', line 398

attach_function :mongocrypt_init, [ :pointer ], :bool

.mongocrypt_kms_ctx_bytes_needed(kms) ⇒ Integer

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Get the number of bytes needed by the KMS context.

Parameters:

  • kms (FFI::Pointer) —

    The mongocrypt_kms_ctx_t object.

Returns:

  • (Integer) —

    The number of bytes needed.



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# File 'lib/mongo/crypt/binding.rb', line 1054

attach_function :mongocrypt_kms_ctx_bytes_needed, [ :pointer ], :int

.mongocrypt_kms_ctx_done(ctx) ⇒ Boolean

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Indicate to libmongocrypt that it will receive no more replies from

mongocrypt_kms_ctx_t objects.

Parameters:

  • ctx (FFI::Pointer) —

    A pointer to a mongocrypt_ctx_t object.

Returns:

  • (Boolean) —

    Whether the operation was successful.



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# File 'lib/mongo/crypt/binding.rb', line 1176

attach_function :mongocrypt_ctx_kms_done, [ :pointer ], :bool

.mongocrypt_kms_ctx_endpoint(kms, endpoint) ⇒ Boolean

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Get the hostname with which to connect over TLS to get information about

the AWS master key.

Parameters:

  • kms (FFI::Pointer) —

    A pointer to a mongocrypt_kms_ctx_t object.

  • endpoint (FFI::Pointer) —

    (out param) A pointer to which the endpoint string will be written by libmongocrypt.

Returns:

  • (Boolean) —

    Whether the operation was successful.



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# File 'lib/mongo/crypt/binding.rb', line 1027

attach_function :mongocrypt_kms_ctx_endpoint, %i[pointer pointer], :bool

.mongocrypt_kms_ctx_fail(ctx) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/mongo/crypt/binding.rb', line 1140

attach_function :mongocrypt_kms_ctx_fail, [ :pointer ], :bool

.mongocrypt_kms_ctx_feed(kms, bytes) ⇒ Boolean

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Feed replies from the KMS back to libmongocrypt.

Parameters:

  • kms (FFI::Pointer) —

    A pointer to the mongocrypt_kms_ctx_t object.

  • bytes (FFI::Pointer) —

    A pointer to a mongocrypt_binary_t object that references the response from the KMS.

Returns:

  • (Boolean) —

    Whether the operation was successful.



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# File 'lib/mongo/crypt/binding.rb', line 1073

attach_function :mongocrypt_kms_ctx_feed, %i[pointer pointer], :bool

.mongocrypt_kms_ctx_get_kms_provider(crypt, kms_providers) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/mongo/crypt/binding.rb', line 953

attach_function(
  :mongocrypt_kms_ctx_get_kms_provider,
  %i[pointer pointer],
  :pointer
)

.mongocrypt_kms_ctx_message(kms, msg) ⇒ Boolean

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Get the message needed to fetch the AWS KMS master key.

Parameters:

  • kms (FFI::Pointer) —

    Pointer to the mongocrypt_kms_ctx_t object

  • msg (FFI::Pointer) —

    (outparam) Pointer to a mongocrypt_binary_t object that will have the location of the message written to it by libmongocrypt.

Returns:

  • (Boolean) —

    Whether the operation is successful.



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# File 'lib/mongo/crypt/binding.rb', line 998

attach_function :mongocrypt_kms_ctx_message, %i[pointer pointer], :bool

.mongocrypt_kms_ctx_status(kms, status) ⇒ Boolean

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Write status information about the mongocrypt_kms_ctx_t object

to the mongocrypt_status_t object.

Parameters:

  • kms (FFI::Pointer) —

    A pointer to the mongocrypt_kms_ctx_t object.

  • status (FFI::Pointer) —

    A pointer to a mongocrypt_status_t object.

Returns:

  • (Boolean) —

    Whether the operation was successful.



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# File 'lib/mongo/crypt/binding.rb', line 1097

attach_function :mongocrypt_kms_ctx_status, %i[pointer pointer], :bool

.mongocrypt_kms_ctx_usleep(ctx) ⇒ int64

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Indicates how long to sleep before sending KMS request.

Parameters:

  • ctx (FFI::Pointer) —

    A pointer to a mongocrypt_ctx_t object.

Returns:

  • (int64) —

    A 64-bit encoded number of microseconds of how long to sleep.



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# File 'lib/mongo/crypt/binding.rb', line 1121

attach_function :mongocrypt_kms_ctx_usleep, [ :pointer ], :int64

.mongocrypt_setopt_aes_256_ctr(crypt, aes_256_ctr_encrypt, aes_256_ctr_decrypt, ctx) ⇒ Boolean

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Set a crypto hook for the AES256-CTR operations.

Parameters:

  • crypt (FFI::Pointer) —

    A pointer to a mongocrypt_t object.

  • aes_enc_fn (Proc) —

    An AES-CTR encryption method.

  • aes_dec_fn (Proc) —

    An AES-CTR decryption method.

  • ctx (FFI::Pointer | nil) —

    An optional pointer to a context object that may have been set when hooks were enabled.

Returns:

  • (Boolean) —

    Whether setting this option succeeded.



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# File 'lib/mongo/crypt/binding.rb', line 1482

attach_function(
  :mongocrypt_setopt_aes_256_ctr,
  %i[
    pointer
    mongocrypt_crypto_fn
    mongocrypt_crypto_fn
    pointer
  ],
  :bool
)

.mongocrypt_setopt_append_crypt_shared_lib_search_path(crypt, path) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/mongo/crypt/binding.rb', line 1519

attach_function(
  :mongocrypt_setopt_append_crypt_shared_lib_search_path,
  %i[
    pointer
    string
  ],
  :void
)

.mongocrypt_setopt_bypass_query_analysis(crypt) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/mongo/crypt/binding.rb', line 1458

attach_function(:mongocrypt_setopt_bypass_query_analysis, [ :pointer ], :void)

.mongocrypt_setopt_crypto_hook_sign_rsaes_pkcs1_v1_5(crypt, sign_rsaes_pkcs1_v1_5, ctx = nil) ⇒ Boolean

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Set a crypto hook for the RSASSA-PKCS1-v1_5 algorithm with a SHA-256 hash.

Parameters:

  • crypt (FFI::Pointer) —

    A pointer to a mongocrypt_t object.

  • sign_rsaes_pkcs1_v1_5 (Proc) —

    A RSASSA-PKCS1-v1_5 signing method.

  • ctx (FFI::Pointer | nil) (defaults to: nil) —

    An optional pointer to a context object that may have been set when hooks were enabled.

Returns:

  • (Boolean) —

    Whether setting this option succeeded.



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# File 'lib/mongo/crypt/binding.rb', line 1375

attach_function(
  :mongocrypt_setopt_crypto_hook_sign_rsaes_pkcs1_v1_5,
  %i[
    pointer
    mongocrypt_hmac_fn
    pointer
  ],
  :bool
)

.mongocrypt_setopt_crypto_hooks(crypt, aes_enc_fn, aes_dec_fn, random_fn, sha_512_fn, sha_256_fn, hash_fn, ctx = nil) ⇒ Boolean

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Set crypto hooks on the provided mongocrypt object.

Parameters:

  • crypt (FFI::Pointer) —

    A pointer to a mongocrypt_t object.

  • aes_enc_fn (Proc) —

    An AES encryption method.

  • aes_dec_fn (Proc) —

    An AES decryption method.

  • random_fn (Proc) —

    A random method.

  • sha_512_fn (Proc) —

    A HMAC SHA-512 method.

  • sha_256_fn (Proc) —

    A HMAC SHA-256 method.

  • hash_fn (Proc) —

    A SHA-256 hash method.

  • ctx (FFI::Pointer | nil) (defaults to: nil) —

    An optional pointer to a context object that may have been set when hooks were enabled.

Returns:

  • (Boolean) —

    Whether setting this option succeeded.



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# File 'lib/mongo/crypt/binding.rb', line 1330

attach_function(
  :mongocrypt_setopt_crypto_hooks,
  %i[
    pointer
    mongocrypt_crypto_fn
    mongocrypt_crypto_fn
    mongocrypt_random_fn
    mongocrypt_hmac_fn
    mongocrypt_hmac_fn
    mongocrypt_hash_fn
    pointer
  ],
  :bool
)

.mongocrypt_setopt_encrypted_field_config_map(crypt, efc_map) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/mongo/crypt/binding.rb', line 1417

attach_function(
  :mongocrypt_setopt_encrypted_field_config_map,
  %i[
    pointer
    pointer
  ],
  :bool
)

.mongocrypt_setopt_kms_providers(crypt, kms_providers) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Note:

Do not initialize ctx before calling this method.

Configure KMS providers with a BSON document.

Parameters:

  • crypt (FFI::Pointer) —

    A pointer to a mongocrypt_t object.

  • kms_providers (FFI::Pointer) —

    A pointer to a mongocrypt_binary_t object that references a BSON document mapping the KMS provider names to credentials.



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# File 'lib/mongo/crypt/binding.rb', line 342

attach_function(
  :mongocrypt_setopt_kms_providers,
  %i[pointer pointer],
  :bool
)

.mongocrypt_setopt_log_handler(crypt, log_fn, log_ctx = nil) ⇒ Boolean

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Set the handler on the mongocrypt_t object to be called every time

libmongocrypt logs a message.

Parameters:

  • crypt (FFI::Pointer) —

    A pointer to a mongocrypt_t object.

  • log_fn (Method) —

    A logging callback method.

  • log_ctx (FFI::Pointer | nil) (defaults to: nil) —

    An optional pointer to a context to be passed into the log callback on every invocation.

Returns:

  • (Boolean) —

    Whether setting the callback was successful.



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# File 'lib/mongo/crypt/binding.rb', line 313

attach_function(
  :mongocrypt_setopt_log_handler,
  %i[pointer mongocrypt_log_fn_t pointer],
  :bool
)

.mongocrypt_setopt_retry_kms(crypt, enable) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/mongo/crypt/binding.rb', line 1158

attach_function :mongocrypt_setopt_retry_kms, %i[pointer bool], :bool

.mongocrypt_setopt_schema_map(crypt, schema_map) ⇒ Boolean

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Sets a local schema map for encryption.

Parameters:

  • crypt (FFI::Pointer) —

    A pointer to a mongocrypt_t object.

  • schema_map (FFI::Pointer) —

    A pointer to a mongocrypt_binary_t. object that references the schema map as a BSON binary string.

Returns:

  • (Boolean) —

    Returns whether the option was set successfully.



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# File 'lib/mongo/crypt/binding.rb', line 373

attach_function :mongocrypt_setopt_schema_map, %i[pointer pointer], :bool

.mongocrypt_setopt_set_crypt_shared_lib_path_override(crypt, path) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/mongo/crypt/binding.rb', line 1548

attach_function(
  :mongocrypt_setopt_set_crypt_shared_lib_path_override,
  %i[
    pointer
    string
  ],
  :void
)

.mongocrypt_setopt_use_need_kms_credentials_state(crypt) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/mongo/crypt/binding.rb', line 1627

attach_function(
  :mongocrypt_setopt_use_need_kms_credentials_state,
  [ :pointer ],
  :void
)

.mongocrypt_status(crypt, status) ⇒ Boolean

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Set the status information from the mongocrypt_t object on the

mongocrypt_status_t object.

Parameters:

  • crypt (FFI::Pointer) —

    A pointer to a mongocrypt_t object.

  • status (FFI::Pointer) —

    A pointer to a mongocrypt_status_t object.

Returns:

  • (Boolean) —

    Whether the status was successfully set.



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# File 'lib/mongo/crypt/binding.rb', line 419

attach_function :mongocrypt_status, %i[pointer pointer], :bool

.mongocrypt_status_code(status) ⇒ Integer

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Return the status error code.

Parameters:

  • status (FFI::Pointer) —

    A pointer to a mongocrypt_status_t.

Returns:

  • (Integer) —

    The status code.



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# File 'lib/mongo/crypt/binding.rb', line 241

attach_function :mongocrypt_status_code, [ :pointer ], :int

.mongocrypt_status_destroy(status) ⇒ nil

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Destroys the reference to the mongocrypt_status_t object.

Parameters:

  • status (FFI::Pointer) —

    A pointer to a mongocrypt_status_t.

Returns:

  • (nil) —

    Always nil.



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# File 'lib/mongo/crypt/binding.rb', line 267

attach_function :mongocrypt_status_destroy, [ :pointer ], :void

.mongocrypt_status_message(status, len = nil) ⇒ String

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns the status message.

Parameters:

  • status (FFI::Pointer) —

    A pointer to a mongocrypt_status_t.

  • len (FFI::Pointer | nil) (defaults to: nil) —

    (out param) An optional pointer to a uint32, where the length of the return string will be written.

Returns:

  • (String) —

    The status message.



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# File 'lib/mongo/crypt/binding.rb', line 251

attach_function :mongocrypt_status_message, %i[pointer pointer], :string

.mongocrypt_status_new ⇒ FFI::Pointer

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Create a new mongocrypt_status_t object.

Returns:

  • (FFI::Pointer) —

    A pointer to the new mongocrypt_status_ts.



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# File 'lib/mongo/crypt/binding.rb', line 207

attach_function :mongocrypt_status_new, [], :pointer

.mongocrypt_status_ok(status) ⇒ Boolean

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns whether the status is ok or an error.

Parameters:

  • status (FFI::Pointer) —

    A pointer to a mongocrypt_status_t.

Returns:

  • (Boolean) —

    Whether the status is ok.



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# File 'lib/mongo/crypt/binding.rb', line 259

attach_function :mongocrypt_status_ok, [ :pointer ], :bool

.mongocrypt_status_set(status, type, code, message, len) ⇒ nil

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Set a message, type, and code on an existing status.

Parameters:

  • status (FFI::Pointer) —

    A pointer to a mongocrypt_status_t.

  • type (Symbol) —

    The status type; possible values are defined by the status_type enum.

  • code (Integer) —

    The status code.

  • message (String) —

    The status message.

  • len (Integer) —

    The length of the message argument (or -1 for a null-terminated string).

Returns:

  • (nil) —

    Always nil.



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# File 'lib/mongo/crypt/binding.rb', line 221

attach_function(
  :mongocrypt_status_set,
  %i[pointer status_type int string int],
  :void
)

.mongocrypt_status_type(status) ⇒ Symbol

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Indicates the status type.

Parameters:

  • status (FFI::Pointer) —

    A pointer to a mongocrypt_status_t.

Returns:

  • (Symbol) —

    The status type (as defined by the status_type enum).



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# File 'lib/mongo/crypt/binding.rb', line 233

attach_function :mongocrypt_status_type, [ :pointer ], :status_type

.mongocrypt_version(len) ⇒ String

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns the version string of the libmongocrypt library.

Parameters:

  • len (FFI::Pointer | nil) —

    (out param) An optional pointer to a uint8 that will reference the length of the returned string.

Returns:

  • (String) —

    A version string for libmongocrypt.



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# File 'lib/mongo/crypt/binding.rb', line 93

attach_function :mongocrypt_version, [ :pointer ], :string

.ongocrypt_new ⇒ FFI::Pointer

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Creates a new mongocrypt_t object.

Returns:

  • (FFI::Pointer) —

    A pointer to a new mongocrypt_t object.



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# File 'lib/mongo/crypt/binding.rb', line 301

attach_function :mongocrypt_new, [], :pointer

.parse_version(version) ⇒ Gem::Version

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Given a string representing a version number, parses it into a Gem::Version object. This handles the case where the string is not in a format supported by Gem::Version by doing some custom parsing.

Parameters:

  • version (String) —

    String representing a version number.

Returns:

  • (Gem::Version) —

    the version number

Raises:

  • (ArgumentError) —

    if the string cannot be parsed.



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# File 'lib/mongo/crypt/binding.rb', line 106

def self.parse_version(version)
  Gem::Version.new(version)
rescue ArgumentError
  match = version.match(/\A(?<major>\d+)\.(?<minor>\d+)\.(?<patch>\d+)?(-[A-Za-z+\d]+)?\z/)
  raise ArgumentError.new("Malformed version number string #{version}") if match.nil?

  Gem::Version.new(
    [
      match[:major],
      match[:minor],
      match[:patch]
    ].join('.')
  )
end

.setopt_aes_256_ctr(handle, aes_ctr_encrypt_cb, aes_ctr_decrypt_cb) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Set a crypto hook for the AES256-CTR operations.

Parameters:

  • handle (Mongo::Crypt::Handle)
  • aes_encrypt_cb (Method) —

    An AES-CTR encryption method

  • aes_decrypt_cb (Method) —

    A AES-CTR decryption method

Raises:



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# File 'lib/mongo/crypt/binding.rb', line 1500

def self.setopt_aes_256_ctr(handle, aes_ctr_encrypt_cb, aes_ctr_decrypt_cb)
  check_status(handle) do
    mongocrypt_setopt_aes_256_ctr(handle.ref,
                                  aes_ctr_encrypt_cb, aes_ctr_decrypt_cb, nil)
  end
end

.setopt_append_crypt_shared_lib_search_path(handle, path) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Append an additional search directory to the search path for loading

the crypt_shared dynamic library.

Parameters:



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# File 'lib/mongo/crypt/binding.rb', line 1533

def self.setopt_append_crypt_shared_lib_search_path(handle, path)
  check_status(handle) do
    mongocrypt_setopt_append_crypt_shared_lib_search_path(handle.ref, path)
  end
end

.setopt_bypass_query_analysis(handle) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Opt-into skipping query analysis.

If opted in:

  • The csfle shared library will not attempt to be loaded.

  • A mongocrypt_ctx_t will never enter the MONGOCRYPT_CTX_NEED_MARKINGS state.

Parameters:



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# File 'lib/mongo/crypt/binding.rb', line 1467

def self.setopt_bypass_query_analysis(handle)
  mongocrypt_setopt_bypass_query_analysis(handle.ref)
end

.setopt_crypto_hook_sign_rsaes_pkcs1_v1_5(handle, rsaes_pkcs_signature_cb) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Set a crypto hook for the RSASSA-PKCS1-v1_5 algorithm with

a SHA-256 hash oh the Handle.

Parameters:

  • handle (Mongo::Crypt::Handle)
  • rsaes_pkcs_signature_cb (Method) —

    A RSASSA-PKCS1-v1_5 signing method.

Raises:



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# File 'lib/mongo/crypt/binding.rb', line 1392

def self.setopt_crypto_hook_sign_rsaes_pkcs1_v1_5(
  handle,
  rsaes_pkcs_signature_cb
)
  check_status(handle) do
    mongocrypt_setopt_crypto_hook_sign_rsaes_pkcs1_v1_5(
      handle.ref,
      rsaes_pkcs_signature_cb,
      nil
    )
  end
end

.setopt_crypto_hooks(handle, aes_encrypt_cb, aes_decrypt_cb, random_cb, hmac_sha_512_cb, hmac_sha_256_cb, hmac_hash_cb) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Set crypto callbacks on the Handle

Parameters:

  • handle (Mongo::Crypt::Handle)
  • aes_encrypt_cb (Method) —

    An AES encryption method

  • aes_decrypt_cb (Method) —

    A AES decryption method

  • random_cb (Method) —

    A method that returns a string of random bytes

  • hmac_sha_512_cb (Method) —

    A HMAC SHA-512 method

  • hmac_sha_256_cb (Method) —

    A HMAC SHA-256 method

  • hmac_hash_cb (Method) —

    A SHA-256 hash method

Raises:



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# File 'lib/mongo/crypt/binding.rb', line 1356

def self.setopt_crypto_hooks(handle,
                             aes_encrypt_cb, aes_decrypt_cb, random_cb,
                             hmac_sha_512_cb, hmac_sha_256_cb, hmac_hash_cb)
  check_status(handle) do
    mongocrypt_setopt_crypto_hooks(handle.ref,
                                   aes_encrypt_cb, aes_decrypt_cb, random_cb,
                                   hmac_sha_512_cb, hmac_sha_256_cb, hmac_hash_cb, nil)
  end
end

.setopt_encrypted_field_config_map(handle, efc_map) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Set a local EncryptedFieldConfigMap for encryption.

Parameters:

  • handle (Mongo::Crypt::Handle)
  • efc_map (BSON::Document) —

    A BSON document representing the EncryptedFieldConfigMap supplied by the user. The keys are collection namespaces and values are EncryptedFieldConfigMap documents.

Raises:



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# File 'lib/mongo/crypt/binding.rb', line 1435

def self.setopt_encrypted_field_config_map(handle, efc_map)
  validate_document(efc_map)
  data = efc_map.to_bson.to_s
  Binary.wrap_string(data) do |data_p|
    check_status(handle) do
      mongocrypt_setopt_encrypted_field_config_map(
        handle.ref,
        data_p
      )
    end
  end
end

.setopt_kms_providers(handle, kms_providers) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Set KMS providers options on the Mongo::Crypt::Handle object

Parameters:

  • handle (Mongo::Crypt::Handle)
  • kms_providers (BSON::Document) —

    BSON document mapping the KMS provider names to credentials.

Raises:



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# File 'lib/mongo/crypt/binding.rb', line 355

def self.setopt_kms_providers(handle, kms_providers)
  validate_document(kms_providers)
  data = kms_providers.to_bson.to_s
  Binary.wrap_string(data) do |data_p|
    check_status(handle) do
      mongocrypt_setopt_kms_providers(handle.ref, data_p)
    end
  end
end

.setopt_log_handler(handle, log_callback) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Set the logger callback function on the Mongo::Crypt::Handle object

Parameters:

Raises:



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# File 'lib/mongo/crypt/binding.rb', line 325

def self.setopt_log_handler(handle, log_callback)
  check_status(handle) do
    mongocrypt_setopt_log_handler(handle, log_callback, nil)
  end
end

.setopt_schema_map(handle, schema_map_doc) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Set schema map on the Mongo::Crypt::Handle object

Parameters:

  • handle (Mongo::Crypt::Handle)
  • schema_map_doc (BSON::Document) —

    The schema map as a BSON::Document object

Raises:



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# File 'lib/mongo/crypt/binding.rb', line 382

def self.setopt_schema_map(handle, schema_map_doc)
  validate_document(schema_map_doc)
  data = schema_map_doc.to_bson.to_s
  Binary.wrap_string(data) do |data_p|
    check_status(handle) do
      mongocrypt_setopt_schema_map(handle.ref, data_p)
    end
  end
end

.setopt_set_crypt_shared_lib_path_override(handle, path) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Set a single override path for loading the crypt shared library.

Parameters:



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# File 'lib/mongo/crypt/binding.rb', line 1561

def self.setopt_set_crypt_shared_lib_path_override(handle, path)
  check_status(handle) do
    mongocrypt_setopt_set_crypt_shared_lib_path_override(handle.ref, path)
  end
end

.setopt_use_need_kms_credentials_state(handle) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Opt-into handling the MONGOCRYPT_CTX_NEED_KMS_CREDENTIALS state.

If set, before entering the MONGOCRYPT_CTX_NEED_KMS state, contexts may enter the MONGOCRYPT_CTX_NEED_KMS_CREDENTIALS state and then wait for credentials to be supplied through ‘mongocrypt_ctx_provide_kms_providers`.

A context will only enter MONGOCRYPT_CTX_NEED_KMS_CREDENTIALS if an empty document was set for a KMS provider in ‘mongocrypt_setopt_kms_providers`.

Parameters:



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# File 'lib/mongo/crypt/binding.rb', line 1645

def self.setopt_use_need_kms_credentials_state(handle)
  mongocrypt_setopt_use_need_kms_credentials_state(handle.ref)
end

.validate_document(data) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Note:

All BSON::Document instances are also Hash instances

Checks that the specified data is a Hash before serializing it to BSON to prevent errors from libmongocrypt

Parameters:

  • data (Object) —

    The data to be passed to libmongocrypt

Raises:



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# File 'lib/mongo/crypt/binding.rb', line 1838

def self.validate_document(data)
  return if data.is_a?(Hash)

  message = if data.nil?
              'Attempted to pass nil data to libmongocrypt. ' +
                'Data must be a Hash'
            else
              "Attempted to pass invalid data to libmongocrypt: #{data} " +
                'Data must be a Hash'
            end

  raise Error::CryptError.new(message)
end

.validate_version(lmc_version) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Validates if provided version of libmongocrypt is valid, i.e. equal or greater than minimum required version. Raises a LoadError if not.

Parameters:

  • lmc_version (String) —

    String representing libmongocrypt version.

Raises:

  • (LoadError) —

    if given version is lesser than minimum required version.



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# File 'lib/mongo/crypt/binding.rb', line 129

def self.validate_version(lmc_version)
  if (actual_version = parse_version(lmc_version)) < MIN_LIBMONGOCRYPT_VERSION
    raise LoadError, "libmongocrypt version #{MIN_LIBMONGOCRYPT_VERSION} or above is required, " +
                     "but version #{actual_version} was found."
  end
end

Instance Method Details

#mongocrypt_crypto_fn(ctx, key, iv, input, output, status) ⇒ Bool

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Note:

This defines a method signature for an FFI callback; it is not an instance method on the Binding class.

A callback to a function that performs AES encryption or decryption.

Parameters:

  • ctx (FFI::Pointer | nil) —

    An optional pointer to a context object that may have been set when hooks were enabled.

  • key (FFI::Pointer) —

    A pointer to a mongocrypt_binary_t object that references the 32-byte AES encryption key.

  • iv (FFI::Pointer) —

    A pointer to a mongocrypt_binary_t object that references the 16-byte AES IV.

  • input (FFI::Pointer) —

    A pointer to a mongocrypt_binary_t object that references the value to be encrypted/decrypted.

  • output (FFI::Pointer) —

    (out param) A pointer to a mongocrypt_binary_t object will have a reference to the encrypted/ decrypted value written to it by libmongocrypt.

  • status (FFI::Pointer) —

    A pointer to a mongocrypt_status_t object to which an error message will be written if encryption fails.

Returns:

  • (Bool) —

    Whether encryption/decryption was successful.



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# File 'lib/mongo/crypt/binding.rb', line 1248

callback(
  :mongocrypt_crypto_fn,
  %i[pointer pointer pointer pointer pointer pointer pointer],
  :bool
)

#mongocrypt_hash_fn(ctx, input, output, status) ⇒ Bool

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Note:

This defines a method signature for an FFI callback; it is not an instance method on the Binding class.

A callback to a SHA-256 hash function.

Parameters:

  • ctx (FFI::Pointer | nil) —

    An optional pointer to a context object that may have been set when hooks were enabled.

  • input (FFI::Pointer) —

    A pointer to a mongocrypt_binary_t object that references the value to be hashed.

  • output (FFI::Pointer) —

    (out param) A pointer to a mongocrypt_binary_t object will have a reference to the output value written to it by libmongocrypt.

  • status (FFI::Pointer) —

    A pointer to a mongocrypt_status_t object to which an error message will be written if encryption fails.

Returns:

  • (Bool) —

    Whether hashing was successful.



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# File 'lib/mongo/crypt/binding.rb', line 1296

callback :mongocrypt_hash_fn, %i[pointer pointer pointer pointer], :bool

#mongocrypt_hmac_fn(ctx, key, input, output, status) ⇒ Bool

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Note:

This defines a method signature for an FFI callback; it is not an instance method on the Binding class.

A callback to a function that performs HMAC SHA-512 or SHA-256.

Parameters:

  • ctx (FFI::Pointer | nil) —

    An optional pointer to a context object that may have been set when hooks were enabled.

  • key (FFI::Pointer) —

    A pointer to a mongocrypt_binary_t object that references the 32-byte HMAC SHA encryption key.

  • input (FFI::Pointer) —

    A pointer to a mongocrypt_binary_t object that references the input value.

  • output (FFI::Pointer) —

    (out param) A pointer to a mongocrypt_binary_t object will have a reference to the output value written to it by libmongocrypt.

  • status (FFI::Pointer) —

    A pointer to a mongocrypt_status_t object to which an error message will be written if encryption fails.

Returns:

  • (Bool) —

    Whether HMAC-SHA was successful.



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# File 'lib/mongo/crypt/binding.rb', line 1273

callback(
  :mongocrypt_hmac_fn,
  %i[pointer pointer pointer pointer pointer],
  :bool
)

#mongocrypt_log_fn_t(level, message, len, ctx) ⇒ nil

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Note:

This defines a method signature for an FFI callback; it is not an instance method on the Binding class.

A callback to the mongocrypt log function. Set a custom log callback

with the mongocrypt_setopt_log_handler method

Parameters:

  • level (Symbol) —

    The log level; possible values defined by the log_level enum

  • message (String) —

    The log message

  • len (Integer) —

    The length of the message param, or -1 if the string is null terminated

  • ctx (FFI::Pointer | nil) —

    An optional pointer to a context object when this callback was set

Returns:

  • (nil) —

    Always nil.



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# File 'lib/mongo/crypt/binding.rb', line 294

callback :mongocrypt_log_fn_t, %i[log_level string int pointer], :void

#mongocrypt_random_fn(ctx, output, count, status) ⇒ Bool

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Note:

This defines a method signature for an FFI callback; it is not an instance method on the Binding class.

A callback to a crypto secure random function.

Parameters:

  • ctx (FFI::Pointer | nil) —

    An optional pointer to a context object that may have been set when hooks were enabled.

  • output (FFI::Pointer) —

    (out param) A pointer to a mongocrypt_binary_t object will have a reference to the output value written to it by libmongocrypt.

  • count (Integer) —

    The number of random bytes to return.

  • status (FFI::Pointer) —

    A pointer to a mongocrypt_status_t object to which an error message will be written if encryption fails.

Returns:

  • (Bool) —

    Whether hashing was successful.



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# File 'lib/mongo/crypt/binding.rb', line 1314

callback :mongocrypt_random_fn, %i[pointer pointer int pointer], :bool