Also extend BIO_METHOD to be able to supply an implementation for the new
BIO_read function.
Reviewed-by: NRichard Levitte <levitte@openssl.org>

Reviewed-by: NMatt Caswell <matt@openssl.org>
Reviewed-by: NRich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/1520)

Reviewed-by: NRichard Levitte <levitte@openssl.org>

Reviewed-by: NDr. Stephen Henson <steve@openssl.org>

Simplify BIO init using OPENSSL_zalloc().
Reviewed-by: NMatt Caswell <matt@openssl.org>
Reviewed-by: NRich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/1261)

Reviewed-by: NRichard Levitte <levitte@openssl.org>
GH: #1330

Function-like macros are replaced with prototypes and a note
that they are implemented as macros.  Constants are just
referenced in-line in the text.

Tweak BIO_TYPE_... documentation.

Also fix RT4592.
Reviewed-by: NMatt Caswell <matt@openssl.org>

Reviewed-by: NAndy Polyakov <appro@openssl.org>

Add script to find unused err/reason codes
Remove unused reason codes.
Remove entries for unused functions
Reviewed-by: NMatt Caswell <matt@openssl.org>

Reviewed-by: NRichard Levitte <levitte@openssl.org>

- Missing checks for allocation failure.
- releasing memory in few missing error paths
Reviewed-by: NKurt Roeckx <kurt@openssl.org>
Reviewed-by: NMatt Caswell <matt@openssl.org>

Reviewed-by: NRich Salz <rsalz@openssl.org>

Reviewed-by: NMatt Caswell <matt@openssl.org>

Link errors were occurring on Windows because the header files were not
correctly guarding some functions with OPENSSL_NO_SOCK
Reviewed-by: NRich Salz <rsalz@openssl.org>

Link errors were occurring on Windows because the header files were not
correctly guarding some functions with OPENSSL_NO_DGRAM
Reviewed-by: NRich Salz <rsalz@openssl.org>

The no-op de-init macros may fail because of extraneous ";", so we use
a slightly different construct instead.
Reviewed-by: NTim Hudson <tjh@openssl.org>
Reviewed-by: NRichard Levitte <levitte@openssl.org>

BIO_sock_cleanup() should not be called expicitly - we should leave
auto-deinit to clean this up instead.
Reviewed-by: NTim Hudson <tjh@openssl.org>
Reviewed-by: NRichard Levitte <levitte@openssl.org>

Currently on every BIO mem read operation the remaining data is reallocated.
This commit solves the issue.
BIO mem structure includes additional pointer to the read position.
On every read the pointer moves instead of reallocating the memory for the remaining data.
Reallocation accures before write and some ioctl operations, if the read pointer doesn't point on the beginning of the buffer.
Also the flag is added to rewind the read pointer without losing the data.
Reviewed-by: NRichard Levitte <levitte@openssl.org>
Reviewed-by: NRich Salz <rsalz@openssl.org>

BIO_f_linebuffer() is now built by default instead of just on VMS, but
the prototype in the header was still only available on VMS.
Reviewed-by: NRich Salz <rsalz@openssl.org>

Move the the BIO_METHOD and BIO structures into internal header files,
provide appropriate accessor methods and update all internal code to use
the new accessors where appropriate.
Reviewed-by: NRichard Levitte <levitte@openssl.org>

BIO_new, etc., don't need a non-const BIO_METHOD. This allows all the
built-in method tables to live in .rodata.
Reviewed-by: NRichard Levitte <levitte@openssl.org>

Reviewed-by: NRichard Levitte <levitte@openssl.org>

Reviewed-by: NRichard Levitte <levitte@openssl.org>

Reviewed-by: NMatt Caswell <matt@openssl.org>
Reviewed-by: NRich Salz <rsalz@openssl.org>

Add utility macros REF_ASSERT_NOT and REF_PRINT_COUNT
This is also RT 4181
Reviewed-by: NRichard Levitte <levitte@openssl.org>

Adds a new function BIO_ADDR_clear to reset a BIO_ADDR back to an
unitialised state, and to set the family to AF_UNSPEC.
Reviewed-by: NViktor Dukhovni <viktor@openssl.org>

Reviewed-by: NKurt Roeckx <kurt@openssl.org>

Reviewed-by: NKurt Roeckx <kurt@openssl.org>

Reviewed-by: NKurt Roeckx <kurt@openssl.org>

Reviewed-by: NKurt Roeckx <kurt@openssl.org>

Added functions:

BIO_socket
BIO_connect
BIO_listen
BIO_accept_ex
BIO_closesocket
BIO_sock_info

These get deprecated:

BIO_gethostbyname
BIO_get_port
BIO_get_host_ip
BIO_get_accept_socket
BIO_accept
Reviewed-by: NKurt Roeckx <kurt@openssl.org>

Reviewed-by: NKurt Roeckx <kurt@openssl.org>

Because different platforms have different levels of support for IPv6,
different kinds of sockaddr variants, and some have getaddrinfo et al
while others don't, we could end up with a mess if ifdefs, duplicate
code and other maintainance nightmares.

Instead, we're introducing wrappers around the common form for socket
communication:
BIO_ADDR, closely related to struct sockaddr and some of its variants.
BIO_ADDRINFO, closely related to struct addrinfo.

With that comes support routines, both convenient creators and
accessors, plus a few utility functions:

BIO_parse_hostserv, takes a string of the form host:service and
splits it into host and service.  It checks for * in both parts, and
converts any [ipv6-address] syntax to ust the IPv6 address.

BIO_lookup, looks up information on a host.

All routines handle IPv4 (AF_INET) and IPv6 (AF_INET6) addresses, and
there is support for local sockets (AF_UNIX) as well.
Reviewed-by: NKurt Roeckx <kurt@openssl.org>

Signed-off-by: NRich Salz <rsalz@akamai.com>
Reviewed-by: NDr. Stephen Henson <steve@openssl.org>

There was an unused macro in ssl_locl.h that used an internal
type, so I removed it.
Move bio_st from bio.h to ossl_type.h
Reviewed-by: NAndy Polyakov <appro@openssl.org>

Reviewed-by: NRich Salz <rsalz@openssl.org>

This was done by the following
        find . -name '*.[ch]' | /tmp/pl
where /tmp/pl is the following three-line script:
        print unless $. == 1 && m@/\* .*\.[ch] \*/@;
        close ARGV if eof; # Close file to reset $.

And then some hand-editing of other files.
Reviewed-by: NViktor Dukhovni <viktor@openssl.org>

Applications wishing to include their own stacks now just need to include

DEFINE_STACK_OF(foo)

in a header file.
Reviewed-by: NRichard Levitte <levitte@openssl.org>

Add CRYPTO_free_ex_index (for shared libraries)
Unify and complete the documentation for all "ex_data" API's and objects.
Replace xxx_get_ex_new_index functions with a macro.
Added an exdata test.
Renamed the ex_data internal datatypes.
Reviewed-by: NMatt Caswell <matt@openssl.org>

The actual implementation has the state of the connection being
controlled with the peer parameter, non-NULL meaning connected and
NULL meaning connected.
Reviewed-by: NAndy Polyakov <appro@openssl.org>