Ensure that x**0 mod 1 = 0.

(cherry picked from commit 2b0180c37fa6ffc48ee40caa831ca398b828e680)

Reviewed-by: Ben Laurie <ben@openssl.org>

Followup on RT3334 fix: make sure that a directory that's the empty
string returns 0 with errno = ENOENT.

Reviewed-by: Andy Polyakov <appro@openssl.org>
(cherry picked from commit 360928b7d0f16dde70e26841bbf9e1af727e8b8f)

RT3334: Fix crypto/LPdir_win.c

Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Andy Polyakov <appro@openssl.org>
(cherry picked from commit 6a14fe7576e7a14a46ba14df8be8fe478536b4fb)

Make the inline const-time functions static.

"inline" without static is not correct as the compiler may choose to ignore it
and will then either emit an external definition, or expect one.

Reviewed-by: Geoff Thorpe <geoff@openssl.org>
(cherry picked from commit 86f50b36e63275a916b147f9d8764e3c0c060fdb)

md5-x86_64.pl: work around warning.

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit 4d86e8df6be69ed13abb73fd564f1f894eea0a98)

Add tags/TAGS

Reviewed-by: Tim Hudson <tjh@openssl.org>
(cherry picked from commit 9d6253cfd3395dfe7147dae134579c6b16544c53)

RT2379: Bug in BIO_set_accept_port.pod

The doc says that port can be "*" to mean any port.
That's wrong.

Reviewed-by: Dr. Stephen Henson <steve@openssl.org>
(cherry picked from commit 07e3b31fae98b985d3d2aad7066144b11833f688)

Fixed double inclusion of string.h

PR2693

Reviewed-by: Tim Hudson <tjh@openssl.org>
(cherry picked from commit 5d33b70ef5a4768fdfb77a73f9817c4570613039)

Constant-time utilities

Pull constant-time methods out to a separate header, add tests.

Reviewed-by: Bodo Moeller <bodo@openssl.org>
(cherry picked from commit e7169a5835390d20057de8a19785982bd6a9b8c8)

Conflicts:
ssl/Makefile
test/Makefile

Explicitly check for empty ASN.1 strings in d2i_ECPrivateKey

The old code implicitly relies on the ASN.1 code returning a \0-prefixed buffer
when the buffer length is 0. Change this to verify explicitly that the ASN.1 string
has positive length.

Reviewed-by: Dr Stephen Henson <steve@openssl.org>
(cherry picked from commit 82dc08de54ce443c2a9ac478faffe79e76157795)

RT3065: automatically generate a missing EC public key

When d2i_ECPrivateKey reads a private key with a missing (optional) public key,
generate one automatically from the group and private key.

Reviewed-by: Dr Stephen Henson <steve@openssl.org>
(cherry picked from commit ed383f847156940e93f256fed78599873a4a9b28)

Conflicts:
doc/crypto/EC_KEY_new.pod

RT3065: ec_private_key_dont_crash

This change saves several EC routines from crashing when an EC_KEY is
missing a public key. The public key is optional in the EC private key
format and, without this patch, running the following through `openssl
ec` causes a crash:

-----BEGIN EC PRIVATE KEY-----
MBkCAQEECAECAwQFBgcIoAoGCCqGSM49AwEH
-----END EC PRIVATE KEY-----

Reviewed-by: Dr Stephen Henson <steve@openssl.org>
(cherry picked from commit b391570bdeb386d4fd325917c248d593d3c43930)

RT2210: Add missing EVP_cleanup to example

I also removed some trailing whitespace and cleaned
up the "see also" list.

Reviewed-by: Emilia Kasper <emilia@openssl.org>
(cherry picked from commit 7b3e11c54466f1da8b707c932e308d345fd61101)

RT1744: SSL_CTX_set_dump_dh() doc feedback

The description of when the server creates a DH key is
confusing.  This cleans it up.
(rsalz: also removed trailing whitespace.)

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

RT1804: fix EXAMPLE in EVP_EncryptInit.pod

The EXAMPLE that used FILE and RC2 doesn't compile due to a
few minor errors.  Tweak to use IDEA and AES-128. Remove
examples about RC2 and RC5.

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

Typo fixes to evp documentation.

This patch was submitted by user "Kox" via the wiki

Reviewed-by: Tim Hudson <tjh@openssl.org>
(cherry picked from commit 2dd8cb3b9593f528d9537aa6a003d5c93df1e3c5)

RT3060: Limit the number of empty records.

Limit the number of empty records that will be processed consecutively
in order to prevent ssl3_get_record from never returning.

Reported by "oftc_must_be_destroyed" and George Kadianakis.

Reviewed-by: Bodo Moeller <bodo@openssl.org>
(cherry picked from commit 3aac17a82fbaf2bc23ee62f24611e5883d3e7b97)

RT3061: Don't SEGFAULT when trying to export a public DSA key as a private key.

Reviewed-by: Viktor Dukhovni <viktor@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit e19c93811f0db499c98d2888f1c0c0ab65e6238a)

Improve EVP_PKEY_sign documentation

Clarify the intended use of EVP_PKEY_sign. Make the code example compile.

Reviewed-by: Dr Stephen Henson <steve@openssl.org>
(cherry picked from commit d64c533a207f7b6d86c3bc8ffb053e5f4d0c1ca0)

define inline for Visual Studio

In Visual Studio, inline is available in C++ only, however __inline is available for C, see
http://msdn.microsoft.com/en-us/library/z8y1yy88.aspx

Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Dr Stephen Henson <steve@openssl.org>
(cherry picked from commit f511b25a7370c775dc9fd6198dbacd1706cf242b)

Add volatile qualifications to two blocks of inline asm to stop GCC from
eliminating them as dead code.

Both volatile and "memory" are used because of some concern that the compiler
may still cache values across the asm block without it, and because this was
such a painful debugging session that I wanted to ensure that it's never
repeated.

(cherry picked from commit 7753a3a68431aa81b82beea4c3f5374b41454679)

Conflicts:
crypto/bn/asm/x86_64-gcc.c

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit a90b1e32d2f697d1aa39b49038469e2ea40d5e7b)

Fixed out-of-bounds read errors in ssl3_get_key_exchange.

PR#3450

Conflicts:
ssl/s3_clnt.c

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

Further improve/fix ec_GFp_simple_points_make_affine (ecp_smpl.c) and
group_order_tests (ectest.c).  Also fix the EC_POINTs_mul documentation (ec.h).

Reviewed-by: emilia@openssl.org
Conflicts:
crypto/ec/ectest.c

Prepare for 1.0.0o-dev

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

Prepare for 1.0.0n release

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

make update

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

Updates to CHANGES and NEWS

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

Fix race condition in ssl_parse_serverhello_tlsext

CVE-2014-3509
Reviewed-by: Tim Hudson <tjh@openssl.org>
Reviewed-by: Dr. Stephen Henson <steve@openssl.org>

Fix OID handling:

- Upon parsing, reject OIDs with invalid base-128 encoding.
- Always NUL-terminate the destination buffer in OBJ_obj2txt printing function.

CVE-2014-3508

Reviewed-by: Dr. Stephen Henson <steve@openssl.org>
Reviewed-by: Kurt Roeckx <kurt@openssl.org>
Reviewed-by: Tim Hudson <tjh@openssl.org>

Fix DTLS anonymous EC(DH) denial of service

CVE-2014-3510

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

Fix protocol downgrade bug in case of fragmented packets

CVE-2014-3511

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

Remove some duplicate DTLS code.

In a couple of functions, a sequence number would be calculated twice.

Additionally, in |dtls1_process_out_of_seq_message|, we know that
|frag_len| <= |msg_hdr->msg_len| so the later tests for |frag_len <
msg_hdr->msg_len| can be more clearly written as |frag_len !=
msg_hdr->msg_len|, since that's the only remaining case.

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

Applying same fix as in dtls1_process_out_of_seq_message. A truncated DTLS fragment would cause *ok to be clear, but the return value would still be the number of bytes read.

Problem identified by Emilia Käsper, based on previous issue/patch by Adam
Langley.

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

Fix return code for truncated DTLS fragment.

Previously, a truncated DTLS fragment in
|dtls1_process_out_of_seq_message| would cause *ok to be cleared, but
the return value would still be the number of bytes read. This would
cause |dtls1_get_message| not to consider it an error and it would
continue processing as normal until the calling function noticed that
*ok was zero.

I can't see an exploit here because |dtls1_get_message| uses
|s->init_num| as the length, which will always be zero from what I can
see.

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

Fix memory leak from zero-length DTLS fragments.

The |pqueue_insert| function can fail if one attempts to insert a
duplicate sequence number. When handling a fragment of an out of
sequence message, |dtls1_process_out_of_seq_message| would not call
|dtls1_reassemble_fragment| if the fragment's length was zero. It would
then allocate a fresh fragment and attempt to insert it, but ignore the
return value, leaking the fragment.

This allows an attacker to exhaust the memory of a DTLS peer.

Fixes CVE-2014-3507

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

Fix DTLS handshake message size checks.

In |dtls1_reassemble_fragment|, the value of
|msg_hdr->frag_off+frag_len| was being checked against the maximum
handshake message size, but then |msg_len| bytes were allocated for the
fragment buffer. This means that so long as the fragment was within the
allowed size, the pending handshake message could consume 16MB + 2MB
(for the reassembly bitmap). Approx 10 outstanding handshake messages
are allowed, meaning that an attacker could consume ~180MB per DTLS
connection.

In the non-fragmented path (in |dtls1_process_out_of_seq_message|), no
check was applied.

Fixes CVE-2014-3506

Wholly based on patch by Adam Langley with one minor amendment.

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

Added comment for the frag->reassembly == NULL case as per feedback from Emilia

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

Avoid double free when processing DTLS packets.

The |item| variable, in both of these cases, may contain a pointer to a
|pitem| structure within |s->d1->buffered_messages|. It was being freed
in the error case while still being in |buffered_messages|. When the
error later caused the |SSL*| to be destroyed, the item would be double
freed.

Thanks to Wah-Teh Chang for spotting that the fix in 1632ef74 was
inconsistent with the other error paths (but correct).

Fixes CVE-2014-3505

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

Fix warnings about ignored return values.
(cherry picked from commit 27131fe8f7418bf22b1e3000ea6a5d7b1ec8ebd4)
Reviewed-by: Matt Caswell <matt@openssl.org>

Simplify and fix ec_GFp_simple_points_make_affine
(which didn't always handle value 0 correctly).

Reviewed-by: emilia@openssl.org
Conflicts:
CHANGES
crypto/ec/ectest.c

"EC_POINT_invert" was checking "dbl" function pointer instead of "invert".

PR#2569

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit cba11f57ce161fd301a72194827327128191de7e)

Remove old unused and unmaintained demonstration code.

Reviewed-by: Dr. Stephen Henson <steve@openssl.org>
(cherry picked from commit 62352b8138018775a4c085a105fccd9cdcb6323f)

Minor documentation update removing "really" and a
statement of opinion rather than a fact.

Reviewed-by: Dr. Stephen Henson <steve@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit c8d133e4b6f1ed1b7ad3c1a6d2c62f460e26c050)

Fix documentation for RSA_set_method(3)

PR#1675
Reviewed-by: Matt Caswell <matt@openssl.org>
(cherry picked from commit 197400c3f0d617d71ad8167b52fb73046d334320)

Fix typo, add reference.

PR#3456
Reviewed-by: Stephen Henson <steve@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
(cherry picked from commit d48e78f0cf22aaddb563f4bcfccf25b1a45ac8a4)

Add Matt Caswell's fingerprint, and general update on the fingerprints file to bring it up to date

Reviewed-by: Tim Hudson <tjh@openssl.org>
(cherry picked from commit 3bd548192a03142c80cf8bc68659d79dea20a738)

Clarify -Verify and PSK.

PR#3452
(cherry picked from commit ca2015a617842fed3d36ed4dcbbf8d5e27bc5216)

Fix DTLS certificate requesting code.

Use same logic when determining when to expect a client
certificate for both TLS and DTLS.

PR#3452
(cherry picked from commit c8d710dc5f83d69d802f941a4cc5895eb5fe3d65)

Add ECC extensions with DTLS.

PR#3449
(cherry picked from commit 2054eb771ea29378f90d3a77c2f4015b17de702d)

Don't allow -www etc options with DTLS.

The options which emulate a web server don't make sense when doing DTLS.
Exit with an error if an attempt is made to use them.

PR#3453
(cherry picked from commit 58a2aaeade8bdecd0f9f0df41927f7cff3012547)

Use case insensitive compare for servername.

PR#3445
(cherry picked from commit 1c3e9a7c67ccdc5e770829fe951e5832e600d377)

Use more common name for GOST key exchange.
(cherry picked from commit 7aabd9c92fe6f0ea2a82869e5171dcc4518cee85)

Fixed valgrind complaint due to BN_consttime_swap reading uninitialised data.
This is actually ok for this function, but initialised to zero anyway if
PURIFY defined.

This does have the impact of masking any *real* unitialised data reads in bn though.

Patch based on approach suggested by Rich Salz.

PR#3415

(cherry picked from commit 77747e2d9a5573b1dbc15e247ce18c03374c760c)

Add names of GOST algorithms.

PR#3440
(cherry picked from commit 924e5eda2c82d737cc5a1b9c37918aa6e34825da)

Conflicts:

ssl/ssl_ciph.c

* crypto/ui/ui_lib.c: misplaced brace in switch statement.
  Detected by dcruette@qualitesys.com

(cherry picked from commit 8b5dd340919e511137696792279f595a70ae2762)

Fix memory leak in BIO_free if there is no destroy function.
Based on an original patch by Neitrino Photonov <neitrinoph@gmail.com>

PR#3439

(cherry picked from commit 66816c53bea0ecddb9448da7ea9a51a334496127)

Prevent infinite loop loading config files.

PR#2985
(cherry picked from commit 9d23f422a32cb333a5e803199ae230706b1bf9f5)

Usage for -hack and -prexit -verify_return_error

(cherry picked from commit a07f514fc02b09c854ce857a8df828d29f7121d3)

Document certificate status request options.

Conflicts:

doc/apps/s_client.pod
doc/apps/s_server.pod
(cherry picked from commit b197c770a6a6ec3d17d7d310a9b64570f044eca0)

s_server usage for certificate status requests

Update ticket callback docs.
(cherry picked from commit a23a6e85d8dcd5733a343754f434201f3c9aa6f0)

Sanity check keylength in PVK files.

PR#2277
(cherry picked from commit 733a6c882e92f8221bd03a51643bb47f5f81bb81)

Fixed error in pod files with latest versions of pod2man

(cherry picked from commit 07255f0a76d9d349d915e14f969b9ff2ee0d1953)

Return smaller of ret and f.

PR#3418.
(cherry picked from commit fdea4fff8fb058be928980600b24cf4c62ef3630)

Don't limit message sizes in ssl3_get_cert_verify.

PR#319 (reoponed version).
(cherry picked from commit 7f6e9578648728478e84246fd3e64026b8b6a48e)

Conflicts:

ssl/s3_srvr.c

Add license info.
(cherry picked from commit 55707a36cce3584457f687ff020842c079624ee8)

typo
(cherry picked from commit 2cfbec1caea8f9567bdff85d33d22481f2afb40a)
(cherry picked from commit a9661e45acda0bedcb2413b412f9ffc3f9fb2354)

Merge branch 'rsalz-docfixes'

Close 3170, remove reference to Ariel Glenn's old 0.9.8 doc
(cherry picked from commit f1112985e847286033ac573e70bdee752d26f46f)

update release notes

Fix doc typo.

ERR_get_error(3) references the non-existent
ERR_get_last_error_line_data instead of the one that does exist,
ERR_peek_last_error_line_data.

PR#3283
(cherry picked from commit 5cc99c6cf5e908df6b00b04af7f08e99c0698c7b)

Make disabling last cipher work.
(cherry picked from commit 7cb472bd0d0fd9da3d42bed1acc56c3a79fc5328)

util/mkerr.pl: fix perl warning

Gets rid of this;

defined(@array) is deprecated at ../util/mkerr.pl line 792.
        (Maybe you should just omit the defined()?)
defined(@array) is deprecated at ../util/mkerr.pl line 800.
        (Maybe you should just omit the defined()?)

Signed-off-by: Geoff Thorpe <geoff@openssl.org>
(cherry picked from commit 647f360e2e86818cee1f2d0429e071d14814e0b5)

ASN1 sanity check.

Primitive encodings shouldn't use indefinite length constructed
form.

PR#2438 (partial).
(cherry picked from commit 398e99fe5e06edb11f55a39ce0883d9aa633ffa9)

Clarified that the signature's buffer size, `s`, is not used as an
IN parameter.

Under the old docs, the only thing stated was "at most
EVP_PKEY_size(pkey) bytes will be written". It was kind of misleading
since it appears EVP_PKEY_size(pkey) WILL be written regardless of the
signature's buffer size.

(cherry picked from commit 6e6ba36d980f67b6e5c7b139f78da7acbbf8ec76)

Fix memory leak.

PR#2531.

Typo.

PR#3173
(cherry picked from commit 76ed5a42ea68dd08bba44e4003b7e638e5d8a4a3)

Show errors on CSR verification failure.

If CSR verify fails in ca utility print out error messages.
Otherwise some errors give misleading output: for example
if the key size exceeds the library limit.

PR#2875
(cherry picked from commit a30bdb55d1361b9926eef8127debfc2e1bb8c484)

Make no-ssl3 no-ssl2 do more sensible things.
(cherry picked from commit 7ae6a4b659facfd7ad8131238aa1d349cb3fc951)

Typo.

PR#3107
(cherry picked from commit 7c206db9280865ae4af352dbc14e9019a6c4795d)

Don't disable state strings with no-ssl2

Some state strings were erronously not compiled when no-ssl2
was set.

PR#3295
(cherry picked from commit 0518a3e19e18cfc441cab261b28441b8c8bd77bf)

Fix typo in ideatest.c
(cherry picked from commit d1d4382dcb3fdcad4758ef7e7dd7b61dbf5abbfe)

Remove redundant check.

PR#3174
(cherry picked from commit fd331c0bb9b557903dd2ce88398570a3327b5ef0)

Fix for EVP_PBE_alg_add().

In EVP_PBE_alg_add don't use the underlying NID for the cipher
as it may have a non-standard key size.

PR#3206
(cherry picked from commit efb7caef637a1de8468ca109efd355a9d0e73a45)

Tolerate critical AKID in CRLs.

PR#3014
(cherry picked from commit 11da66f8b1fbe5777fe08cc6ace9e1f2c1576a50)

Handle IPv6 addresses in OCSP_parse_url.

PR#2783
(cherry picked from commit b36f35cda964544a15d53d3fdfec9b2bab8cacb1)

Don't advertise ECC ciphersuits in SSLv2 compatible client hello.

PR#3374
(cherry picked from commit 0436369fccd128cb7f6a8538d5fed1c876c437af)

Clarify docs.

Document that the certificate passed to SSL_CTX_add_extra_chain_cert()
should not be freed by the application.

PR#3409
(cherry picked from commit 0535c2d67ca2d684087ef90be35d5fb207aab227)

Add restrictions section present in other branches.

Conflicts:

doc/ssl/SSL_CTX_add_extra_chain_cert.pod
(cherry picked from commit 86cac6d3b25342ff17a2b6564f7592fd7c6829e8)

Memory leak and NULL dereference fixes.

PR#3403
(cherry picked from commit d2aea038297e0c64ca66e6844cbb37377365885e)

Remove ancient obsolete files under pkcs7.
(cherry picked from commit 7be6b27aaf5ed77f13c93dc89a2c27a42082db3f)

Make sure BN_sqr can never return a negative value.

PR#3410
(cherry picked from commit e14e764c0d5d469da63d0819c6ffc0e1e9e7f0bb)

Memory allocation checks.

PR#3399.
(cherry picked from commit da0d5e78bcd35a9fd394fb7b7b058722125e76cb)

Fix off-by-one errors in ssl_cipher_get_evp()

In the ssl_cipher_get_evp() function, fix off-by-one errors in index validation before accessing arrays.

Bug discovered and fixed by Miod Vallat from the OpenBSD team.

PR#3375

Revert "Fix off-by-one errors in ssl_cipher_get_evp()"

This reverts commit 7e98378d155263bebbea3b3c13c1b6a780c8a6d3.

Incorrect attribution.

Accept CCS after sending finished.

Allow CCS after finished has been sent by client: at this point
keys have been correctly set up so it is OK to accept CCS from
server. Without this renegotiation can sometimes fail.

PR#3400
(cherry picked from commit 99cd6a91fcb0931feaebbb4832681d40a66fad41)

Fixed incorrect return code handling in ssl3_final_finish_mac.
Based on an original patch by Joel Sing (OpenBSD) who also originally identified the issue.

Revert "Fixed incorrect return code handling in ssl3_final_finish_mac"

This reverts commit e05282f8b0b6c6ea063267eb86c4d6b4702c41a1.

Missing attribution.

Fix off-by-one errors in ssl_cipher_get_evp()

In the ssl_cipher_get_evp() function, fix off-by-one errors in index validation before accessing arrays.

PR#3375

Allow the maximum value.
(Backported as a result of PR#3377 reported by Rainer Jung <rainer.jung@kippdata.de>)

Fix compilation with no-comp
(cherry picked from commit 7239a09c7b5757ed8d0e9869f3e9b03c0e11f4d1)