Also add a few comments about constant-timeness.

Thanks to Brian Smith for reporting this issue.

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

The function CRYPTO_strdup (aka OPENSSL_strdup) fails to check the return
value from CRYPTO_malloc to see if it is NULL before attempting to use it.
This patch adds a NULL check.

RT3786

Signed-off-by: Matt Caswell <matt@openssl.org>
(cherry picked from commit 37b0cf936744d9edb99b5dd82cae78a7eac6ad60)

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit 20d21389c8b6f5b754573ffb6a4dc4f3986f2ca4)

Add tables to convert between SSL_CIPHER fields and indices for ciphers
and MACs.

Reorganise ssl_ciph.c to use tables to lookup values and load them.

New functions SSL_CIPHER_get_cipher_nid and SSL_CIPHER_get_digest_nid.

Add documentation.

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

Set config to /dev/null when doing make rehash.

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

Make only errors go to stderr.
Print count and size before the loop, so you can see it's an 838K
message that will take a few moments.

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

The files removed are the ones that were symbolic links before, but
aren't now, so we should not remove them any more.

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

EAP-FAST session resumption relies on handshake message lookahead
to determine server intentions. Commits
980bc1ec
and
7b3ba508


removed the lookahead so broke session resumption.

This change partially reverts the commits and brings the lookahead back
in reduced capacity for TLS + EAP-FAST only. Since EAP-FAST does not
support regular session tickets, the lookahead now only checks for a
Finished message.

Regular handshakes are unaffected by this change.

Reviewed-by: David Benjamin <davidben@chromium.org>
Reviewed-by: Matt Caswell <matt@openssl.org>

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

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

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

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

This addresses

- request for improvement for faster key setup in RT#3576;
- clearing registers and stack in RT#3554 (this is more of a gesture to
see if there will be some traction from compiler side);
- more commentary around input parameters handling and stack layout
(desired when RT#3553 was reviewed);
- minor size and single block performance optimization (was lying around);

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

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

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

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

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

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

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

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

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

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

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

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

Fix bug where i2c_ASN1_INTEGER mishandles zero if it is marked as
negative.

Thanks to Huzaifa Sidhpurwala <huzaifas@redhat.com> and
Hanno Böck <hanno@hboeck.de> for reporting this issue.

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

A 0-length ciphers list is never permitted. The old code only used to
reject an empty ciphers list for connections with a session ID. It
would later error out on a NULL structure, so this change just moves
the alert closer to the problem source.

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

The disabled set of -Weverything is hard to maintain across versions.
Use -Wall -Wextra but also document other useful warnings that currently trigger.

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

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

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

ssl_cert_inst was removed in 2c382349



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

Reported by Hanno Böck <hanno@hboeck.de>

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

Reported by Hanno Böck <hanno@hboeck.de>
PR#3800

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

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

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

newsig may be used (freed) uninitialized on a malloc error.

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

If OpenSSL is configured with no-tlsext then ssl_get_prev_session can read
past the end of the ClientHello message if the session_id length in the
ClientHello is invalid. This should not cause any security issues since the
underlying buffer is 16k in size. It should never be possible to overrun by
that many bytes.

This is probably made redundant by the previous commit - but you can never be
too careful.

With thanks to Qinghao Tang for reporting this issue.

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

The ClientHello processing is insufficiently rigorous in its checks to make
sure that we don't read past the end of the message. This does not have
security implications due to the size of the underlying buffer - but still
needs to be fixed.

With thanks to Qinghao Tang for reporting this issue.

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

Ongoing work to skip NULL check before calling free routine.  This gets:
    ecp_nistz256_pre_comp_free nistp224_pre_comp_free nistp256_pre_comp_free
    nistp521_pre_comp_free PKCS7_free PKCS7_RECIP_INFO_free
    PKCS7_SIGNER_INFO_free sk_PKCS7_pop_free PKCS8_PRIV_KEY_INFO_free
    PKCS12_free PKCS12_SAFEBAG_free PKCS12_free sk_PKCS12_SAFEBAG_pop_free
    SSL_CONF_CTX_free SSL_CTX_free SSL_SESSION_free SSL_free ssl_cert_free
    ssl_sess_cert_free

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

It should have freed them when != NULL, not when == NULL.

Reviewed-by: Kurt Roeckx <kurt@roeckx.be>
Reviewed-by: Viktor Dukhovni <openssl-users@dukhovni.org>

It would set gen->d.dirn to a freed pointer in case X509V3_NAME_from_section
failed.

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

Reviewed-by: Viktor Dukhovni <openssl-users@dukhovni.org>