The new init functions can fail if the library has already been stopped. We
should be able to indicate failure with a 0 return value.
Reviewed-by: NRich Salz <rsalz@openssl.org>

This was a developer debugging feature and was never a useful public
interface.

Added all missing X509 error codes to the verify(1) manpage, but
many still need a description beyond the associated text string.

Sorted the errors in x509_txt.c by error number.
Reviewed-by: NStephen Henson <steve@openssl.org>

Man, there were a lot of renamings :)
Reviewed-by: NRichard Levitte <levitte@openssl.org>

Rebased and merged by me, with Ben's approval.
Reviewed-by: NRichard Levitte <levitte@openssl.org>
Reviewed-by: NBen Laurie <ben@openssl.org>

Fixes for the auto-init/deinit code based on review comments
Reviewed-by: NRichard Levitte <levitte@openssl.org>

Provide some man pages for auto-init/deinit. Also update the INSTALL
documentation for information on the new Configure options implemented as
part of this.
Reviewed-by: NRichard Levitte <levitte@openssl.org>

- One typo fixed in crypto/bio/b_addr.c
- Add a comment in doc/crypto/BIO_parse_hostserv.pod to explain the
  blank lines with one lonely space each.
Reviewed-by: NAndy Polyakov <appro@openssl.org>

As documented both SSL_get0_dane_authority() and SSL_get0_dane_tlsa()
are expected to return a negative match depth and nothing else when
verification fails.  However, this only happened when verification
failed during chain construction.  Errors in verification of the
constructed chain did not have the intended effect on these functions.

This commit updates the functions to check for verify_result ==
X509_V_OK, and no longer erases any accumulated match information
when chain construction fails.  Sophisticated developers can, with
care, use SSL_set_verify_result(ssl, X509_V_OK) to "peek" at TLSA
info even when verification fail.  They must of course first check
and save the real error, and restore the original error as quickly
as possible.  Hiding by default seems to be the safer interface.

Introduced X509_V_ERR_DANE_NO_MATCH code to signal failure to find
matching TLSA records.  Previously reported via X509_V_ERR_CERT_UNTRUSTED.

This also changes the "-brief" output from s_client to include
verification results and TLSA match information.

Mentioned session resumption in code example in SSL_CTX_dane_enable(3).
Also mentioned that depths returned are relative to the verified chain
which is now available via SSL_get0_verified_chain(3).

Added a few more test-cases to danetest, that exercise the new
code.

Resolved thread safety issue in use of static buffer in
X509_verify_cert_error_string().

Fixed long-stating issue in apps/s_cb.c which always sets verify_error
to either X509_V_OK or "chain to long", code elsewhere (e.g.
s_time.c), seems to expect the actual error.  [ The new chain
construction code is expected to correctly generate "chain
too long" errors, so at some point we need to drop the
work-arounds, once SSL_set_verify_depth() is also fixed to
propagate the depth to X509_STORE_CTX reliably. ]
Reviewed-by: NRich Salz <rsalz@openssl.org>

dgst: using digest instead of specific digest commands
the digest list specified in man dgst may be inaccurate, hence using
digest and referring to the list in digest-commands

'sha' as a digest name is no longer supported

dgst,pkeyutl cmds help cleanup
- In dgst, pkeyutl cmds, some options help was missing.
- fixed a minor typo in openssl.pod, that fixes make install.
- digest-commands was showing ‘sha’, which is not a supported digest
anymore.
Signed-off-by: NRich Salz <rsalz@openssl.org>
Reviewed-by: NTim Hudson <tjh@openssl.org>

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

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

opt_valtype 0 is same as '-' while printing cmd usage
asn1parse/ca/ciphers help cleanup
Signed-off-by: NRich Salz <rsalz@openssl.org>
Reviewed-by: NMatt Caswell <matt@openssl.org>

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

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

Allow initial engine names as first parameters before flags.
Also add engine param to help summary

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

Make it clear that if we are unable to get hold of the peer address then
*peer is cleared and the family set to AF_UNSPEC.
Reviewed-by: NViktor Dukhovni <viktor@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>

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

The DTLSv1_listen function exposed details of the underlying BIO
abstraction and did not properly allow for IPv6. This commit changes the
"peer" argument to be a BIO_ADDR and makes it a first class function
(rather than a ctrl) to ensure proper type checking.
Reviewed-by: NRichard Levitte <levitte@openssl.org>

Also remove two mistakenly checked-in files.
Reviewed-by: NDr. Stephen Henson <steve@openssl.org>

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

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

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

RT1556: doc/crypto/threads.pod
RT2024: Missing pages mentioned in crypto.pod
RT2890: Wrong size in ERR_string_error description.
RT3461: Better description of PEM Encryption
        (Jeffrey Walton <noloader@gmail.com>)
        Also, fix up formatting and removed some code examples
        that encourage unsafe patterns, like unencrypted private
        keys (Rich Salz)
RT4240: Document some speed flags (Tomas Mraz <tmraz@redhat.com>)
RT4260: Fix return value doc for X509_REQ_sign and X509_sign
        (Laetitia Baudoin <lbaudoin@google.com>)
Reviewed-by: NEmilia Käsper <emilia@openssl.org>

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

Reviewed-by: NAndy Polyakov <appro@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>

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>

CRIME protection: disable compression by default, even if OpenSSL is
compiled with zlib enabled. Applications can still enable compression by
calling SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION), or by using
the SSL_CONF library to configure compression. SSL_CONF continues to
work as before:

SSL_CONF_cmd(ctx, "Options", "Compression") enables compression.

SSL_CONF_cmd(ctx, "Options", "-Compression") disables compression (now
no-op by default).

The command-line switch has changed from -no_comp to -comp.
Reviewed-by: NRich Salz <rsalz@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: NDr. Stephen Henson <steve@openssl.org>

Add new function BN_bn2binpad() which checks the length of the output
buffer and pads the result with zeroes if necessary.

New functions BN_bn2lebinpad() and BN_lebin2bn() which use little endian
format.
Reviewed-by: NRich Salz <rsalz@openssl.org>

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

PACKET contents should be read-only. To achieve this, also
- constify two user callbacks
- constify BUF_reverse.
Reviewed-by: NRich Salz <rsalz@openssl.org>

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

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

This includes basic constraints, key usages, issuer EKUs and auxiliary
trust OIDs (given a trust suitably related to the intended purpose).

Added tests and updated documentation.
Reviewed-by: NDr. Stephen Henson <steve@openssl.org>

New functions to return internal pointer for order and cofactor. This
avoids the need to allocate a new BIGNUM which to copy the value to.
Simplify code to use new functions.
Reviewed-by: NRich Salz <rsalz@openssl.org>

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