Windows "select" only works for sockets so don't use it to wait for async.
Reviewed-by: NRich Salz <rsalz@openssl.org>

Give the API new names, document it.
Reviewed-by: NRichard Levitte <levitte@openssl.org>

This reverts commit 620d540b.
It wasn't reviewed.
Reviewed-by: NRich Salz <rsalz@openssl.org>

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

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

setbuf() is only for 32-bit pointers.  If compiled with /POINTER_SIZE=64,
we get a nasty warning about possible loss of data.  However, since
the only pointer used in the call is a FILE *, and the C RTL shouldn't
give us a pointer above the first 4GB, it's safe to turn off the
warning for this call.
Reviewed-by: NAndy Polyakov <appro@openssl.org>

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

Misc fixes for no-sock
Reviewed-by: NRichard Levitte <levitte@openssl.org>

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

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

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

* Perform ALPN after the SNI callback; the SSL_CTX may change due to
  that processing
* Add flags to indicate that we actually sent ALPN, to properly error
  out if unexpectedly received.
* clean up ssl3_free() no need to explicitly clear when doing memset
* document ALPN functions
Signed-off-by: NRich Salz <rsalz@openssl.org>
Reviewed-by: NEmilia Käsper <emilia@openssl.org>

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

Implementation experience has shown that the original plan for async wait
fds was too simplistic. Originally the async logic created a pipe internally
and user/engine code could then get access to it via API calls. It is more
flexible if the engine is able to create its own fd and provide it to the
async code.

Another issue is that there can be a lot of churn in the fd value within
the context of (say) a single SSL connection leading to continually adding
and removing fds from (say) epoll. It is better if we can provide some
stability of the fd value across a whole SSL connection. This is
problematic because an engine has no concept of an SSL connection.

This commit refactors things to introduce an ASYNC_WAIT_CTX which acts as a
proxy for an SSL connection down at the engine layer.
Reviewed-by: NRichard Levitte <levitte@openssl.org>

Fixes github issue 463.  Building the app without OPENSSL_NO_SOCK
isn't supported, so only do OPENSSL_NO_OCSP.
Reviewed-by: NAndy Polyakov <appro@openssl.org>

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

Add -DBIO_DEBUG to --strict-warnings.
Remove comments about outdated debugging ifdef guards.
Remove md_rand ifdef guarding an assert; it doesn't seem used.
Remove the conf guards in conf_api since we use OPENSSL_assert, not assert.
For pkcs12 stuff put OPENSSL_ in front of the macro name.
Merge TLS_DEBUG into SSL_DEBUG.
Various things just turned on/off asserts, mainly for checking non-NULL
arguments, which is now removed: camellia, bn_ctx, crypto/modes.
Remove some old debug code, that basically just printed things to stderr:
  DEBUG_PRINT_UNKNOWN_CIPHERSUITES, DEBUG_ZLIB, OPENSSL_RI_DEBUG,
  RL_DEBUG, RSA_DEBUG, SCRYPT_DEBUG.
Remove OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL.
Reviewed-by: NRichard Levitte <levitte@openssl.org>

Reviewed-by: NViktor Dukhovni <viktor@openssl.org>

On some platforms, the implementation is such that a signed char
triggers a warning when used with is*() functions.  On others, the
behavior is outright buggy when presented with a char that happens
to get promoted to a negative integer.

The safest thing is to cast the char that's used to an unsigned char.
Reviewed-by: NAndy Polyakov <appro@openssl.org>

Also fix option processing in pkeyutl to allow use of (formerly)
"out-of-order" switches that were needless implementation limitations.

Handle documented "ENGINE" form with -keyform and -peerform.

Better handling of OPENSSL_NO_ENGINE and OPENSSL_NO_RSA.

RT2018
Reviewed-by: NRich Salz <rsalz@openssl.org>

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

Tell open() O_BINARY on VMS doesn't make sense, as it's possible to
use more precise file attributes.  However, if we're still going to
fdopen() it in binary mode, we must set the fd in binary context.
Reviewed-by: NRich Salz <rsalz@openssl.org>

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

Rename BUF_{strdup,strlcat,strlcpy,memdup,strndup,strnlen}
to OPENSSL_{strdup,strlcat,strlcpy,memdup,strndup,strnlen}
Add #define's for the old names.
Add CRYPTO_{memdup,strndup}, called by OPENSSL_{memdup,strndup} macros.
Reviewed-by: NTim Hudson <tjh@openssl.org>

s_server already had the ability to wait on an async file descriptor. This
adds it to s_client too.
Reviewed-by: NRich Salz <rsalz@openssl.org>

continue on from previous commits but in the apps directory
Reviewed-by: NKurt Roeckx <kurt@openssl.org>

RT#4081
Reviewed-by: NRich Salz <rsalz@openssl.org>
Reviewed-by: NRichard Levitte <levitte@openssl.org>

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: NAndy Polyakov <appro@openssl.org>

If the field separator isn't specified through -nameopt then use
XN_FLAG_SEP_CPLUS_SPC instead of printing nothing and returing an error.

PR#2397
Reviewed-by: NTim Hudson <tjh@openssl.org>

This takes away a build failure in some cases.
Reviewed-by: NTim Hudson <tjh@openssl.org>

If the output to stdout or the input from stdin is meant to be binary,
it's deeply unsetting to get the occasional LF converted to CRLF or
the other way around.  If someone happens to forget to redirect stdin
or stdout, they will get gibberish anyway, line ending conversion will
not change that.

Therefore, let's not have dup_bio_* decide unilaterally what mode the
BIO derived from stdin and stdout, and rather let the app decide by
declaring the intended format.
Reviewed-by: NTim Hudson <tjh@openssl.org>

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

The different apps had the liberty to decide whether they would open their
input and output files in binary mode or not, which could be confusing if
two different apps were handling the same type of file in different ways.

The solution is to centralise the decision of low level file organisation,
and that the apps would use a selection of formats to state the intent of
the file.
Reviewed-by: NTim Hudson <tjh@openssl.org>

Remove support for RSA_NET and Netscape key format (-keyform n).

Also removed documentation of SGC.
Reviewed-by: NViktor Dukhovni <viktor@openssl.org>

When generating a private key, try to make the output file be readable
only by the owner.  Put it in CHANGES file since it might be noticeable.

Add "int private" flag to apps that write private keys, and check that it's
set whenever we do write a private key.  Checked via assert so that this
bug (security-related) gets fixed.  Thanks to Viktor for help in tracing
the code-paths where private keys are written.
Reviewed-by: NViktor Dukhovni <viktor@openssl.org>

The module loading feature got broken a while ago, so restore it, but
have it a bit more explicit this time around.
Reviewed-by: NStephen Henson <steve@openssl.org>

Create app_load_config(), a routine to load config file.  Remove the
"always load config" from the main app.  Change the places that used to
load config to call the new common routine.
Reviewed-by: NRichard Levitte <levitte@openssl.org>

Given the pervasive nature of TLS extensions it is inadvisable to run
OpenSSL without support for them. It also means that maintaining
the OPENSSL_NO_TLSEXT option within the code is very invasive (and probably
not well tested). Therefore it is being removed.
Reviewed-by: NRich Salz <rsalz@openssl.org>
Reviewed-by: NRichard Levitte <levitte@openssl.org>

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

For the various string-compare routines (strcmp, strcasecmp, str.*cmp)
use "strcmp()==0" instead of "!strcmp()"
Reviewed-by: NTim Hudson <tjh@openssl.org>