Fix no-stdio build

Much related/similar work also done by
Ivan Nestlerode <ivan.nestlerode@sonos.com>

   +Replace FILE BIO's with dummy ops that fail.
   +Include <stdio.h> for sscanf() even with no-stdio (since the declaration
    is there). We rely on sscanf() to parse the OPENSSL_ia32cap environment
    variable, since it can be larger than a 'long'. And we don't rely on the
    availability of strtoull().
   +Remove OPENSSL_stderr(); not used.
   +Make OPENSSL_showfatal() do nothing (currently without stdio there's
    nothing we can do).
   +Remove file-based functionality from ssl/. The function
    prototypes were already gone, but not the functions themselves.
   +Remove unviable conf functionality via SYS_UEFI
   +Add fallback definition of BUFSIZ.
   +Remove functions taking FILE * from header files.
   +Add missing DECLARE_PEM_write_fp_const
   +Disable X509_LOOKUP_hash_dir(). X509_LOOKUP_file() was already compiled out,
    so remove its prototype.
   +Use OPENSSL_showfatal() in CRYPTO_destroy_dynlockid().
   +Eliminate SRP_VBASE_init() and supporting functions. Users will need to
    build the verifier manually instead.
   +Eliminate compiler warning for unused do_pk8pkey_fp().
   +Disable TEST_ENG_OPENSSL_PKEY.
   +Disable GOST engine as is uses [f]printf all over the place.
   +Eliminate compiler warning for unused send_fp_chars().

Signed-off-by: Rich Salz <rsalz@akamai.com>
Reviewed-by: Tim Hudson <tjh@openssl.org>

engine/e_capi.c: fix various warnings.

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

Fix -Wshadow warnings in mingw builds.

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

Fix pedantic warnings in mingw builds.

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

Fix prototypes in e_ossttest.c.

Problem was exposed in mingw64 build, or in other words on P64 platform.

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

asn1t.h: silence -Wmissing-prototype in Windows builds.

On Windows OPENSSL_EXPORT_VAR_AS_FUNCTION is defined and in a sense
this modification simply harmonizes it with "VAR_AS_VAR".

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

Rationalize .gitignore and harmonize pair of Makefiles.

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

RT3948: Some structs have confusing names.

Signed-off-by: Rich Salz <rsalz@akamai.com>
Reviewed-by: Tim Hudson <tjh@openssl.org>

Print debug info for extended master secret extension

Signed-off-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Tim Hudson <tjh@openssl.org>

RT4053: Typo in error message

Signed-off-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Tim Hudson <tjh@openssl.org>

Remove obsolete b64 demo's

Reviewed-by: Emilia Käsper <emilia@openssl.org>

PACKET: simplify ServerHello parsing

Reviewed-by: Tim Hudson <tjh@openssl.org>

Empty NewSessionTicket: test session resumption

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

Empty session ticket: add a test

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

RT2772: accept empty SessionTicket

RFC 5077 section 3.3 says:
If the server determines that it does not want to include a
ticket after it has included the SessionTicket extension in the
ServerHello, then it sends a zero-length ticket in the
NewSessionTicket handshake message.

Previously the client would fail upon attempting to allocate a
zero-length buffer. Now, we have the client ignore the empty ticket and
keep the existing session.

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

Update year in Windows builds.

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

Harmonize util/mkrc.pl with header move.

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

SRP memory leak fix

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

Silence Wconditional-uninitialized

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

Fixing typo in PROBLEMS

Signed-off-by: Rich Salz <rsalz@akamai.com>
Reviewed-by: Andy Polyakov <appro@openssl.org>

Skylake performance results.

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

GH408 follow-on: update buflen

Some builds break, as documented in:
  https://github.com/openssl/openssl/pull/408#issuecomment-142971427
This fixes it.

Signed-off-by: Rich Salz <rsalz@akamai.com>
Reviewed-by: Tim Hudson <tjh@openssl.org>

Fix typo in previous commit.

Reviewed-by: Tim Hudson <tjh@openssl.org>

Change --debug to -d for compat with old releases.

Reviewed-by: Tim Hudson <tjh@openssl.org>

Remove obsolete OCSP demo

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

Change ossltest engine to manually allocate cipher_data

The ossltest engine wraps the built-in implementation of aes128-cbc.
Normally in an engine the cipher_data structure is automatically allocated
by the EVP layer. However this relies on the engine specifying up front
the size of that cipher_data structure. In the case of ossltest this value
isn't available at compile time. This change makes the ossltest engine
allocate its own cipher_data structure instead of leaving it to the EVP
layer.

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

Properly format linux-arm64ilp32 target config

Otherwise the ./config script fails with errors like:

> Operating system: x86_64-whatever-linux2
> This system (linux-x86_64) is not supported. See file INSTALL for details.

The failure was introduced by a93d3e0.

RT#4062

Reviewed-by: Andy Polyakov <appro@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>

Fix the OCSP test on Windows

The windows test uses the pseudo file "nul" to indicate no file for the
-CApath option. This does not work on all versions of Windows. Instead use
the new -no-CApath option.

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

Document -no-CApath and -no-CAfile

Add documentation to all the appropriate apps for the new -no-CApath and
-no-CAfile options.

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

Add support for -no-CApath and -no-CAfile options

For those command line options that take the verification options
-CApath and -CAfile, if those options are absent then the default path or
file is used instead. It is not currently possible to specify *no* path or
file at all. This change adds the options -no-CApath and -no-CAfile to
specify that the default locations should not be used to all relevant
applications.

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

Document the default CA path functions

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

Add ability to set default CA path and file locations individually

Previously you could only set both the default path and file locations
together. This adds the ability to set one without the other.

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

Configurations: add linux-arm64ilp32 target.

Reviewed-by: Tim Hudson <tjh@openssl.org>

Allow ILP32 compilation in AArch64 assembly pack.

Reviewed-by: Tim Hudson <tjh@openssl.org>

ARMv4 assembly pack: implement support for Thumb2.

As some of ARM processors, more specifically Cortex-Mx series, are
Thumb2-only, we need to support Thumb2-only builds even in assembly.

Reviewed-by: Tim Hudson <tjh@openssl.org>

fix compilation on Solaris

Signed-off-by: Rich Salz <rsalz@akamai.com>
Reviewed-by: Tim Hudson <tjh@openssl.org>

Restore the old interactive prompt.

Reviewed-by: Tim Hudson <tjh@openssl.org>

Sanity check cookie_len

Add a sanity check that the cookie_len returned by app_gen_cookie_cb is
valid.

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

Clarify DTLSv1_listen documentation

Clarify that user code is required to allocate sufficient space for the
addressing scheme in use in the call to DTLSv1_listen.

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

Fix s_server DTLSv1_listen issues

Use sockaddr_storage not sockaddr for the client IP address to allow for
IPv6.
Also fixed a section of code which was conditional on OPENSSL_NO_DTLS1
which should not have been.

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

Add DTLSv1_listen documentation

Adds a new man page to cover the DTLSv1_listen() function.

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

Add -listen documentation

This commit adds documentation for the new -listen option to s_server. Along
the way it also adds documentation for -dtls, -dtls1 and -dtls1_2 which was
missing.

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

Add support for DTLSv1_listen in s_server

DTLSv1_listen is a commonly used function within DTLS solutions for
listening for new incoming connections. This commit adds support to s_server
for using it.

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

Remove remaining old listen code

The old implementation of DTLSv1_listen which has now been replaced still
had a few vestiges scattered throughout the code. This commit removes them.

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

DTLSv1_listen rewrite

The existing implementation of DTLSv1_listen() is fundamentally flawed. This
function is used in DTLS solutions to listen for new incoming connections
from DTLS clients. A client will send an initial ClientHello. The server
will respond with a HelloVerifyRequest containing a unique cookie. The
client the responds with a second ClientHello - which this time contains the
cookie.

Once the cookie has been verified then DTLSv1_listen() returns to user code,
which is typically expected to continue the handshake with a call to (for
example) SSL_accept().

Whilst listening for incoming ClientHellos, the underlying BIO is usually in
an unconnected state. Therefore ClientHellos can come in from *any* peer.
The arrival of the first ClientHello without the cookie, and the second one
with it, could be interspersed with other intervening messages from
different clients.

The whole purpose of this mechanism is as a defence against DoS attacks. The
idea is to avoid allocating state on the server until the client has
verified that it is capable of receiving messages at the address it claims
to come from. However the existing DTLSv1_listen() implementation completely
fails to do this. It attempts to super-impose itself on the standard state
machine and reuses all of this code. However the standard state machine
expects to operate in a stateful manner with a single client, and this can
cause various problems.

A second more minor issue is that the return codes from this function are
quite confused, with no distinction made between fatal and non-fatal errors.
Most user code treats all errors as non-fatal, and simply retries the call
to DTLSv1_listen().

This commit completely rewrites the implementation of DTLSv1_listen() and
provides a stand alone implementation that does not rely on the existing
state machine. It also provides more consistent return codes.

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

Add BIO_CTRL_DGRAM_SET_PEEK_MODE

Add the ability to peek at a message from the DTLS read BIO. This is needed
for the DTLSv1_listen rewrite.

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

Fix the rehash test on Windows

The openssl rehash command is not available on some platforms including
Windows. This change skips the associated tests if rehash is not available.

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

make update

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

header includes

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

Document X509_get0_subject_key_id()

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

New function X509_get0_subject_key_id()

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

Make X509 opaque

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

Avoid structure access in crypto/ts

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

PACKET: simplify

Get rid of the third field that is no longer needed.

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

Remove ssl_put_cipher_by_char

Since SSLv3, a CipherSuite is always 2 bytes. The only place where we
need 3-byte ciphers is SSLv2-compatible ClientHello processing.

So, remove the ssl_put_cipher_by_char indirection.

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

Document BUF_strnlen

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

BUF_strdup and friends: update docs

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

BUF_strndup: tidy

Fix comment, add another overflow check, tidy style

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

Make BUF_strndup() read-safe on arbitrary inputs

BUF_strndup was calling strlen through BUF_strlcpy, and ended up reading
past the input if the input was not a C string.

Make it explicitly part of BUF_strndup's contract to never read more
than |siz| input bytes. This augments the standard strndup contract to
be safer.

The commit also adds a check for siz overflow and some brief documentation
for BUF_strndup().

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

GH398: Add mingw cross-compile, etc.

For all release branches.  It adds travis build support. If you don't
have a config file it uses the default (because we enabled travis for the
project), which uses ruby/rake/rakefiles, and you get confusing "build
still failing" messages.

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

Fix path in comments

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

make depend

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

Move certificate request and CRL routines to x509 dir.

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

Move functions.

Move various functions tagged onto t_x509.c to more appropriate places.

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

Update SEE ALSO sections.

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

Document signature accessors.

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

Extension parsing and encoding docs.

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

Document i2d_re_X509_REQ_tbs() and i2d_re_X509_CRL_tbs().

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

Document X509_REVOKED functions.

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

Document X509 sign and verify functions.

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

Document X509 public key functions.

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

Document X509 name get and set functions.

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

Document X509 version functions.

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

Use accessors in X509_REQ_print().

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

Use accessor functions in X509_CRL_print().

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

New accessor X509_REQ_get_X509_PUBKEY()

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

Additional X509_CRL accessors.

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

typo

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

Add comments to x509_int.h

Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Emilia Käsper <emilia@openssl.org>

Add accessors for X509_REVOKED.

Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Emilia Käsper <emilia@openssl.org>

Add accessors for request and CRL signatures

Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Emilia Käsper <emilia@openssl.org>

Remove "noise" comments from TS files.

Reviewed-by: Tim Hudson <tjh@openssl.org>

RT3479: Add UTF8 support to BIO_read_filename()

If we use BIO_new_file(), on Windows it'll jump through hoops to work
around their unusual charset/Unicode handling. it'll convert a UTF-8
filename to UCS-16LE and attempt to use _wfopen().

If you use BIO_read_filename(), it doesn't do this. Shouldn't it be
consistent?

It would certainly be nice if SSL_use_certificate_chain_file() worked.

Also made BIO_C_SET_FILENAME work (rsalz)

Signed-off-by: Rich Salz <rsalz@akamai.com>
Reviewed-by: Andy Polyakov <appro@openssl.org>

RT3823: Improve the robustness of event logging

There are a couple of minor fixes here:

1) Handle the case when RegisterEventSource() fails (which it may for
various reasons) and do the work of logging the event only if it succeeds.

2) Handle the case when ReportEvent() fails and do our best in debug builds
to at least attempt somehow indicate that something has gone wrong. The
typical situation would be someone running tools like DbMon, DBWin32,
DebugView or just having the debugger attached. The intent is to make sure
that at least some data will be captured so that we can save hours and days
of debugging time.

3) Minor fix to change the MessageBox() flag to MB_ICONERROR. Though the
value of MB_ICONERROR is the same value as MB_ICONSTOP, the intent is
better conveyed by using MB_ICONERROR.

Testing performed:

1) Clean compilation for debug-VC-WIN32 and VC-WIN32.

2) Good test results (nmake -f ms\ntdll.mak test) for debug-VC-WIN32 and
VC-WIN32.

3) Stepped through relevant changes using WinDBG and exercised the impacted
code paths.

Signed-off-by: Rich Salz <rsalz@akamai.com>
Reviewed-by: Matt Caswell <matt@openssl.org>

GOST PKCS12 support

Changes required to add GOST support to PKCS12

Based on a patch provided by Dmitry Belyavsky <beldmit@gmail.com>

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

Add GOST extensions to PKCS#5

GOST extends PKCS5 PBES2/PBKDF2 with some additional GOST specific PRFs.

Based on a patch provided by Dmitry Belyavsky <beldmit@gmail.com>

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

Fix SRP memory leaks

There were some memory leaks in the creation of an SRP verifier (both on
successful completion and also on some error paths).

Reviewed-by: Emilia Käsper <emilia@openssl.org>

Fix -srpvfile option in srp command line

The -srpvfile option was broken in the srp command line app. Using it would
always result in "-dbfile and -configfile cannot be specified together."
The error message is also wrong because the option is "-srpvfile" not
"-dbfile", so that has been fixed too.

Reviewed-by: Emilia Käsper <emilia@openssl.org>

Make SRP work with -www

PR#3817

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

Handle SSL_ERROR_WANT_X509_LOOKUP

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

remove unneeded includes

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

make no-dh work

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

Move EVP_PKEY_METHOD into private headers.

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

Simplify Simple.pm further, and make it more verbose

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

Correct srp test

There actually is a "srp" feature to check the availability on

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

Correct jpake test

There actually is a "jpake" feature to check the availability on

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

Correct sha tests

These tests were checking for specific sha variants, when they should
just check if "sha" is disabled.

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

Correct whirlpool test

It depended on 'openssl no-wp', which always exited with code 0, so
this test would never be performed, and this, I never discovered that
the program it's supposed to run was misspellt.  Furthermore, the
feature to check is 'whirlpool', not 'wp'.

All corrected.

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

Finally, remove a possibly disabled feature

I have no clue why MD_GHOST94 was checked on, there is no
OPENSSL_NO_MD_GHOST94 in sight anywhere

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

Add more features that may be disabled

Have a look at the directories in crypto/, I found reason to add
checks on CMAC and HMAC.  This might be completely irrelevant, but I
prefered covering too much than not enough.

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