165 lines
7.5 KiB
Plaintext
165 lines
7.5 KiB
Plaintext
|
=pod
|
||
|
|
|
||
|
|
=head1 NAME
|
||
|
|
|
||
|
|
BIO_get_new_index,
|
||
|
|
BIO_meth_new, BIO_meth_free, BIO_meth_get_read_ex, BIO_meth_set_read_ex,
|
||
|
|
BIO_meth_get_write_ex, BIO_meth_set_write_ex, BIO_meth_get_write,
|
||
|
|
BIO_meth_set_write, BIO_meth_get_read, BIO_meth_set_read, BIO_meth_get_puts,
|
||
|
|
BIO_meth_set_puts, BIO_meth_get_gets, BIO_meth_set_gets, BIO_meth_get_ctrl,
|
||
|
|
BIO_meth_set_ctrl, BIO_meth_get_create, BIO_meth_set_create,
|
||
|
|
BIO_meth_get_destroy, BIO_meth_set_destroy, BIO_meth_get_callback_ctrl,
|
||
|
|
BIO_meth_set_callback_ctrl - Routines to build up BIO methods
|
||
|
|
|
||
|
|
=head1 SYNOPSIS
|
||
|
|
|
||
|
|
#include <openssl/bio.h>
|
||
|
|
|
||
|
|
int BIO_get_new_index(void);
|
||
|
|
|
||
|
|
BIO_METHOD *BIO_meth_new(int type, const char *name);
|
||
|
|
|
||
|
|
void BIO_meth_free(BIO_METHOD *biom);
|
||
|
|
|
||
|
|
int (*BIO_meth_get_write_ex(const BIO_METHOD *biom))(BIO *, const char *, size_t,
|
||
|
|
size_t *);
|
||
|
|
int (*BIO_meth_get_write(const BIO_METHOD *biom))(BIO *, const char *, int);
|
||
|
|
int BIO_meth_set_write_ex(BIO_METHOD *biom,
|
||
|
|
int (*bwrite)(BIO *, const char *, size_t, size_t *));
|
||
|
|
int BIO_meth_set_write(BIO_METHOD *biom,
|
||
|
|
int (*write)(BIO *, const char *, int));
|
||
|
|
|
||
|
|
int (*BIO_meth_get_read_ex(const BIO_METHOD *biom))(BIO *, char *, size_t, size_t *);
|
||
|
|
int (*BIO_meth_get_read(const BIO_METHOD *biom))(BIO *, char *, int);
|
||
|
|
int BIO_meth_set_read_ex(BIO_METHOD *biom,
|
||
|
|
int (*bread)(BIO *, char *, size_t, size_t *));
|
||
|
|
int BIO_meth_set_read(BIO_METHOD *biom, int (*read)(BIO *, char *, int));
|
||
|
|
|
||
|
|
int (*BIO_meth_get_puts(const BIO_METHOD *biom))(BIO *, const char *);
|
||
|
|
int BIO_meth_set_puts(BIO_METHOD *biom, int (*puts)(BIO *, const char *));
|
||
|
|
|
||
|
|
int (*BIO_meth_get_gets(const BIO_METHOD *biom))(BIO *, char *, int);
|
||
|
|
int BIO_meth_set_gets(BIO_METHOD *biom,
|
||
|
|
int (*gets)(BIO *, char *, int));
|
||
|
|
|
||
|
|
long (*BIO_meth_get_ctrl(const BIO_METHOD *biom))(BIO *, int, long, void *);
|
||
|
|
int BIO_meth_set_ctrl(BIO_METHOD *biom,
|
||
|
|
long (*ctrl)(BIO *, int, long, void *));
|
||
|
|
|
||
|
|
int (*BIO_meth_get_create(const BIO_METHOD *bion))(BIO *);
|
||
|
|
int BIO_meth_set_create(BIO_METHOD *biom, int (*create)(BIO *));
|
||
|
|
|
||
|
|
int (*BIO_meth_get_destroy(const BIO_METHOD *biom))(BIO *);
|
||
|
|
int BIO_meth_set_destroy(BIO_METHOD *biom, int (*destroy)(BIO *));
|
||
|
|
|
||
|
|
long (*BIO_meth_get_callback_ctrl(const BIO_METHOD *biom))(BIO *, int, BIO_info_cb *);
|
||
|
|
int BIO_meth_set_callback_ctrl(BIO_METHOD *biom,
|
||
|
|
long (*callback_ctrl)(BIO *, int, BIO_info_cb *));
|
||
|
|
|
||
|
|
=head1 DESCRIPTION
|
||
|
|
|
||
|
|
The B<BIO_METHOD> type is a structure used for the implementation of new BIO
|
||
|
|
types. It provides a set of functions used by OpenSSL for the implementation
|
||
|
|
of the various BIO capabilities. See the L<bio> page for more information.
|
||
|
|
|
||
|
|
BIO_meth_new() creates a new B<BIO_METHOD> structure. It should be given a
|
||
|
|
unique integer B<type> and a string that represents its B<name>.
|
||
|
|
Use BIO_get_new_index() to get the value for B<type>.
|
||
|
|
|
||
|
|
The set of
|
||
|
|
standard OpenSSL provided BIO types is provided in B<bio.h>. Some examples
|
||
|
|
include B<BIO_TYPE_BUFFER> and B<BIO_TYPE_CIPHER>. Filter BIOs should have a
|
||
|
|
type which have the "filter" bit set (B<BIO_TYPE_FILTER>). Source/sink BIOs
|
||
|
|
should have the "source/sink" bit set (B<BIO_TYPE_SOURCE_SINK>). File descriptor
|
||
|
|
based BIOs (e.g. socket, fd, connect, accept etc) should additionally have the
|
||
|
|
"descriptor" bit set (B<BIO_TYPE_DESCRIPTOR>). See the L<BIO_find_type> page for
|
||
|
|
more information.
|
||
|
|
|
||
|
|
BIO_meth_free() destroys a B<BIO_METHOD> structure and frees up any memory
|
||
|
|
associated with it.
|
||
|
|
|
||
|
|
BIO_meth_get_write_ex() and BIO_meth_set_write_ex() get and set the function
|
||
|
|
used for writing arbitrary length data to the BIO respectively. This function
|
||
|
|
will be called in response to the application calling BIO_write_ex() or
|
||
|
|
BIO_write(). The parameters for the function have the same meaning as for
|
||
|
|
BIO_write_ex(). Older code may call BIO_meth_get_write() and
|
||
|
|
BIO_meth_set_write() instead. Applications should not call both
|
||
|
|
BIO_meth_set_write_ex() and BIO_meth_set_write() or call BIO_meth_get_write()
|
||
|
|
when the function was set with BIO_meth_set_write_ex().
|
||
|
|
|
||
|
|
BIO_meth_get_read_ex() and BIO_meth_set_read_ex() get and set the function used
|
||
|
|
for reading arbitrary length data from the BIO respectively. This function will
|
||
|
|
be called in response to the application calling BIO_read_ex() or BIO_read().
|
||
|
|
The parameters for the function have the same meaning as for BIO_read_ex().
|
||
|
|
Older code may call BIO_meth_get_read() and BIO_meth_set_read() instead.
|
||
|
|
Applications should not call both BIO_meth_set_read_ex() and BIO_meth_set_read()
|
||
|
|
or call BIO_meth_get_read() when the function was set with
|
||
|
|
BIO_meth_set_read_ex().
|
||
|
|
|
||
|
|
BIO_meth_get_puts() and BIO_meth_set_puts() get and set the function used for
|
||
|
|
writing a NULL terminated string to the BIO respectively. This function will be
|
||
|
|
called in response to the application calling BIO_puts(). The parameters for
|
||
|
|
the function have the same meaning as for BIO_puts().
|
||
|
|
|
||
|
|
BIO_meth_get_gets() and BIO_meth_set_gets() get and set the function typically
|
||
|
|
used for reading a line of data from the BIO respectively (see the L<BIO_gets(3)>
|
||
|
|
page for more information). This function will be called in response to the
|
||
|
|
application calling BIO_gets(). The parameters for the function have the same
|
||
|
|
meaning as for BIO_gets().
|
||
|
|
|
||
|
|
BIO_meth_get_ctrl() and BIO_meth_set_ctrl() get and set the function used for
|
||
|
|
processing ctrl messages in the BIO respectively. See the L<BIO_ctrl> page for
|
||
|
|
more information. This function will be called in response to the application
|
||
|
|
calling BIO_ctrl(). The parameters for the function have the same meaning as for
|
||
|
|
BIO_ctrl().
|
||
|
|
|
||
|
|
BIO_meth_get_create() and BIO_meth_set_create() get and set the function used
|
||
|
|
for creating a new instance of the BIO respectively. This function will be
|
||
|
|
called in response to the application calling BIO_new() and passing
|
||
|
|
in a pointer to the current BIO_METHOD. The BIO_new() function will allocate the
|
||
|
|
memory for the new BIO, and a pointer to this newly allocated structure will
|
||
|
|
be passed as a parameter to the function.
|
||
|
|
|
||
|
|
BIO_meth_get_destroy() and BIO_meth_set_destroy() get and set the function used
|
||
|
|
for destroying an instance of a BIO respectively. This function will be
|
||
|
|
called in response to the application calling BIO_free(). A pointer to the BIO
|
||
|
|
to be destroyed is passed as a parameter. The destroy function should be used
|
||
|
|
for BIO specific clean up. The memory for the BIO itself should not be freed by
|
||
|
|
this function.
|
||
|
|
|
||
|
|
BIO_meth_get_callback_ctrl() and BIO_meth_set_callback_ctrl() get and set the
|
||
|
|
function used for processing callback ctrl messages in the BIO respectively. See
|
||
|
|
the L<BIO_callback_ctrl(3)> page for more information. This function will be called
|
||
|
|
in response to the application calling BIO_callback_ctrl(). The parameters for
|
||
|
|
the function have the same meaning as for BIO_callback_ctrl().
|
||
|
|
|
||
|
|
=head1 RETURN VALUES
|
||
|
|
|
||
|
|
BIO_get_new_index() returns the new BIO type value or -1 if an error occurred.
|
||
|
|
|
||
|
|
BIO_meth_new(int type, const char *name) returns a valid B<BIO_METHOD> or NULL
|
||
|
|
if an error occurred.
|
||
|
|
|
||
|
|
The B<BIO_meth_set> functions return 1 on success or 0 on error.
|
||
|
|
|
||
|
|
The B<BIO_meth_get> functions return the corresponding function pointers.
|
||
|
|
|
||
|
|
=head1 SEE ALSO
|
||
|
|
|
||
|
|
L<bio>, L<BIO_find_type>, L<BIO_ctrl>, L<BIO_read_ex>, L<BIO_new>
|
||
|
|
|
||
|
|
=head1 HISTORY
|
||
|
|
|
||
|
|
The functions described here were added in OpenSSL 1.1.0.
|
||
|
|
|
||
|
|
=head1 COPYRIGHT
|
||
|
|
|
||
|
|
Copyright 2016-2018 The OpenSSL Project Authors. All Rights Reserved.
|
||
|
|
|
||
|
|
Licensed under the OpenSSL license (the "License"). You may not use
|
||
|
|
this file except in compliance with the License. You can obtain a copy
|
||
|
|
in the file LICENSE in the source distribution or at
|
||
|
|
L<https://www.openssl.org/source/license.html>.
|
||
|
|
|
||
|
|
=cut
|