Historically (i.e., OpenSSL 1.0.x), the openssl applications would
allow for empty subject attributes to be passed via the -subj argument,
e.g., `opensl req -subj '/CN=joe/O=/OU=local' ...`.  Commit
db4c08f0 applied a badly needed rewrite
to the parse_name() helper function that parses these strings, but
in the process dropped a check that would skip attributes with no
associated value.  As a result, such strings are now treated as
hard errors and the operation fails.

Restore the check to skip empty attribute values and restore
the historical behavior.

Document the behavior for empty subject attribute values in the
corresponding applications' manual pages.
Reviewed-by: NMatt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/7349)

CLA: trivial
Reviewed-by: NPaul Dale <paul.dale@oracle.com>
Reviewed-by: NMatthias St. Pierre <Matthias.St.Pierre@ncp-e.com>
(Merged from https://github.com/openssl/openssl/pull/7356)

The PR #7329 left some indentation slightly off.  This fixes it.
Reviewed-by: NPaul Yang <yang.yang@baishancloud.com>
(Merged from https://github.com/openssl/openssl/pull/7360)

Hash can be longer than EC group degree and it will be truncated.

CLA: trivial
Reviewed-by: NPaul Yang <yang.yang@baishancloud.com>
Reviewed-by: NPaul Dale <paul.dale@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/7329)

We passed that ioctl a pointer to the whole session_op structure,
which wasn't quite right.

Notified by David Legault.

Fixes #7302
Reviewed-by: NKurt Roeckx <kurt@roeckx.be>
(Merged from https://github.com/openssl/openssl/pull/7304)

Fixes #7322
Reviewed-by: NPaul Dale <paul.dale@oracle.com>
Reviewed-by: NBernd Edlinger <bernd.edlinger@hotmail.de>
(Merged from https://github.com/openssl/openssl/pull/7351)

Some modules are built with case insensitive (uppercase) symbols on
VMS.  This needs to be reflected in the export symbol vector.
Reviewed-by: NTim Hudson <tjh@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/7347)

We didn't notice the error because it all happened in the top directory.
Now that we use .ld files in subdirectories, the bug became apparent.
Reviewed-by: NTim Hudson <tjh@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/7347)

Reviewed-by: NTim Hudson <tjh@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/7347)

Reviewed-by: NTim Hudson <tjh@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/7347)

This allows setting up export maps for DSOs as well in a uniform way.
This also means that util/mkdef.pl no longer picks up the target
version from configdata.pm, and it has to be given on the command line
instead.  This may be used to give modules separate versions as well,
if desirable.
Reviewed-by: NTim Hudson <tjh@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/7347)

Check that different return values passed to the BIO callback are
correctly handled.
Reviewed-by: NTim Hudson <tjh@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/7344)

The BIO callback handling incorrectly wrote over the return code passed
to the callback, meaning that an incorrect result was (eventually) returned
to the caller.

Fixes #7343
Reviewed-by: NTim Hudson <tjh@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/7344)

Rewrite util/mknum.pl to become cleaner, and to use the separate
generic C header parsing module, as well as the separate ordinals
manipulation module.
Adapt the build files.
Reviewed-by: NTim Hudson <tjh@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/7191)

This means adding the capability to add new items, to invalidate and
revalidate all the items, and to update the file it came from, as well
as the possibility to create new items from other data than a line
from said file.

While we're at it, we throw in a couple of useful filters.
Reviewed-by: NTim Hudson <tjh@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/7191)

OpenSSL::ParseC is a module that parses through a C header file and
returns a list with information on what it found.  Currently, the
information it returns covers function and variable declarations,
macro definitions, struct declarations/definitions and typedef
definitions.
Reviewed-by: NTim Hudson <tjh@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/7191)

Having it as a 'platform' was conceptually wrong from from the
beginning, and makes decoding more complicated than necessary.
Reviewed-by: NTim Hudson <tjh@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/7191)

Move the .num updating functionality to util/mknum.pl.
Rewrite util/mkdef.pl to create .def / .map / .opt files exclusively,
using the separate ordinals reading module.
Adapt the build files.
Adapt the symbol presence test.
Reviewed-by: NTim Hudson <tjh@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/7191)

Reviewed-by: NTim Hudson <tjh@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/7191)

I was never exported in our shared libraries and no one noticed, and
we don't seem to use it ourselves, so clean it away.

In all likelyhood, this is a remain from the 90's, when it was in
fashion to litter library modules with these kinds of strings.
Reviewed-by: NPaul Dale <paul.dale@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/7340)

In drbgtest, test_set_defaults changes the default DRBGs. This works fine
when tests are run in the normal order. However if
OPENSSL_TEST_RAND_ORDER is defined then it may fail (dependent on the
ordering). This environment variable is defined for one of the Travis
tests, so this issue was causing intermittent travis test failures.

[extended tests]
Reviewed-by: NMatthias St. Pierre <Matthias.St.Pierre@ncp-e.com>
Reviewed-by: NPaul Dale <paul.dale@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/7338)

These are auto generated files that should not be checked into git
Reviewed-by: NRichard Levitte <levitte@openssl.org>
Reviewed-by: NPaul Dale <paul.dale@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/7339)

Check some return values on some functions.
Reviewed-by: NTim Hudson <tjh@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/7335)

Free memory allocated in the parent process that is not needed in the
child. We also free it in the parent. Technically this isn't really
required since we end up calling exit() soon afterwards - but to
prevent false positives we free it anyway.

Fixes a Coverity issue.
Reviewed-by: NTim Hudson <tjh@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/7335)

Minor change to documentation of RAND_DRBG_set_defaults()
Reviewed-by: NPaul Yang <yang.yang@baishancloud.com>
Reviewed-by: NPaul Dale <paul.dale@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/7326)

Related to #6696
Reviewed-by: NTim Hudson <tjh@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/6702)

The generation of linker scripts was badly balanced, as all sorts of
platform dependent stuff went into the top build.info, when that part
should really be made as simply and generic as possible.

Therefore, we move a lot of the "magic" to the build files templates,
since they are the place for platform dependent things.  What remains
is to parametrize just enough in the build.info file to generate the
linker scripts correctly for each associated library.

"linker script" is a term usually reserved for certain Unix linkers.
However, we only use them to say what symbols should be exported, so
we use the term loosely for all platforms.  The internal extension is
'.ld', and is changed by the build file templates as appropriate for
each target platform.

Note that this adds extra meaning to the value of the shared_target
attribute.
Reviewed-by: NTim Hudson <tjh@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/7333)

Only a few clashing ones remain
Reviewed-by: NPaul Yang <yang.yang@baishancloud.com>
(Merged from https://github.com/openssl/openssl/pull/7331)

BIO_s_log() is declared for everyone, so should return NULL when not
actually implemented.  Also, it had explicit platform limitations in
util/mkdef.pl that didn't correspond to what was actually in code.
While at it, a few other hard coded things that have lost their
relevance were removed.

include/openssl/ocsp.h had a few duplicate declarations.
Reviewed-by: NPaul Yang <yang.yang@baishancloud.com>
(Merged from https://github.com/openssl/openssl/pull/7331)

Added DRBG_HMAC & DRBG_HASH + Added defaults for setting DRBG for master/public/private + renamed generate_counter back to reseed_counter + generated new cavs data tests
Reviewed-by: NMatt Caswell <matt@openssl.org>
Reviewed-by: NPaul Dale <paul.dale@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/6779)

And references to other manpages are also added in openssl(1).
Signed-off-by: NAntoine Salon <asalon@vmware.com>
Reviewed-by: NPaul Yang <yang.yang@baishancloud.com>
Reviewed-by: NPaul Dale <paul.dale@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/7314)

Reviewed-by: NPaul Yang <yang.yang@baishancloud.com>
Reviewed-by: NTim Hudson <tjh@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/7035)

Signed-off-by: NAntoine Salon <asalon@vmware.com>
Reviewed-by: NNicola Tuveri <nic.tuv@gmail.com>
Reviewed-by: NPaul Dale <paul.dale@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/7248)

Reviewed-by: NTim Hudson <tjh@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/7308)

Reviewed-by: NTim Hudson <tjh@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/7306)

Reviewed-by: NPaul Dale <paul.dale@oracle.com>
Reviewed-by: NMatt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/7297)

This commit documents the OPENSSL_VERSION_TEXT which is currently
missing in the man page.
Reviewed-by: NTim Hudson <tjh@openssl.org>
Reviewed-by: NRichard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/7301)

Change all calls to getenv() inside libcrypto to use a new wrapper function
that use secure_getenv() if available and an issetugid then getenv if not.

CPU processor override flags are unchanged.

Extra checks for OPENSSL_issetugid() have been removed in favour of the
safe getenv.
Reviewed-by: NBernd Edlinger <bernd.edlinger@hotmail.de>
(Merged from https://github.com/openssl/openssl/pull/7047)

It's a bit annoying, since some commands try to read a .rnd file,
and print an error message if the file does not exist.

But previously a .rnd file was created on exit, and that does no longer
happen.

Fixed by continuing in app_RAND_load_conf regardless of the error in
RAND_load_file.

If the random number generator is still not initalized on exit, the
function RAND_write_file will fail and no .rnd file would be created.

Remove RANDFILE from openssl.cnf
Reviewed-by: NKurt Roeckx <kurt@roeckx.be>
(Merged from https://github.com/openssl/openssl/pull/7217)

Reviewed-by: NRichard Levitte <levitte@openssl.org>
Reviewed-by: NPaul Dale <paul.dale@oracle.com>
Reviewed-by: NMatthias St. Pierre <Matthias.St.Pierre@ncp-e.com>
(Merged from https://github.com/openssl/openssl/pull/7277)