This dates back to upstream's a2a0158959e597188c10fbfeaf61888b2df2e587.
It seems to be a remnant of those SSL_clear calls in the handshake state
machine which... were also bizarre and since gone.
Since SSL_clear is to drop the current connection but retain the
configuration, it doesn't really make sense to forbid it while you're
mid-handshake.
This removes another consumer of s->renegotiate.
BUG=429450
Change-Id: Ifac6bf11644447fd5571262bed7421684739bc39
Reviewed-on: https://boringssl-review.googlesource.com/4823
Reviewed-by: Adam Langley <agl@google.com>
ssl_cipher_list_to_bytes is client-only, so s->renegotiate worked, but
the only reason the other two worked is because s->renegotiate isn't a
lie on the server before ServerHello.
BUG=429450
Change-Id: If68a986c6ec4a0f16e57a6187238e05b50ecedfc
Reviewed-on: https://boringssl-review.googlesource.com/4822
Reviewed-by: Adam Langley <agl@google.com>
Now that WebRTC honors packet boundaries (https://crbug.com/447431), we
can start enforcing them correctly. Configuring read-ahead now does
nothing. Instead DTLS will always set "read-ahead" and also correctly
enforce packet boundaries when reading records. Add tests to ensure that
badly fragmented packets are ignored. Because such packets don't fail
the handshake, the tests work by injecting an alert in the front of the
handshake stream and ensuring the DTLS implementation ignores them.
ssl3_read_n can be be considerably unraveled now, but leave that for
future cleanup. For now, make it correct.
BUG=468889
Change-Id: I800cfabe06615af31c2ccece436ca52aed9fe899
Reviewed-on: https://boringssl-review.googlesource.com/4820
Reviewed-by: Adam Langley <agl@google.com>
tls1_enc is now SSL_AEAD_CTX_{open,seal}. This starts tidying up a bit
of the record-layer logic. This removes rr->input, as encrypting and
decrypting records no longer refers to various globals. It also removes
wrec altogether. SSL3_RECORD is now only used to maintain state about
the current incoming record. Outgoing records go straight to the write
buffer.
This also removes the outgoing alignment memcpy and simply calls
SSL_AEAD_CTX_seal with the parameters as appropriate. From bssl speed
tests, this seems to be faster on non-ARM and a bit of a wash on ARM.
Later it may be worth recasting these open/seal functions to write into
a CBB (tweaked so it can be malloc-averse), but for now they take an
out/out_len/max_out trio like their EVP_AEAD counterparts.
BUG=468889
Change-Id: Ie9266a818cc053f695d35ef611fd74c5d4def6c3
Reviewed-on: https://boringssl-review.googlesource.com/4792
Reviewed-by: Adam Langley <agl@google.com>
Current thought is to organize this by:
- Core SSL_CTX APIs (creating, destroying)
- Core SSL APIs (creating destroying, maybe handshake, read, write as
well)
- APIs to configure SSL_CTX/SSL, roughly grouped by feature. Probably
options and modes are the first two sections. SSL_TXT_* constants can
be part of documenting cipher suite configuration.
- APIs to query state from SSL_CTX/SSL, roughly grouped by feature. (Or
perhaps these should be folded into the configuration sections?)
The functions themselves aren't reordered or reorganized to match the
eventual header order yet. Though I did do the s -> ssl rename on the
ones I've touched.
Also formally deprecate SSL_clear. It would be a core SSL API
except it's horrible.
Change-Id: Ia7e4fdcb7bad4e9ccdee8cf8c3136dc63aaaa772
Reviewed-on: https://boringssl-review.googlesource.com/4784
Reviewed-by: Adam Langley <agl@google.com>
|SSL_CTX| and |X509_STORE| have grown their own locks. Several static
locks have been added to hack around not being able to use a
|CRYPTO_once_t| in public headers. Lastly, support for calling
|SSL_CTX_set_generate_session_id| concurrently with active connections
has been removed. No other property of an |SSL_CTX| works like that.
Change-Id: Iff5fe3ee3fdd6ea9c9daee96f850b107ad8a6bca
Reviewed-on: https://boringssl-review.googlesource.com/4775
Reviewed-by: Adam Langley <agl@google.com>
Convert reference counts in ssl/ to use |CRYPTO_refcount_t|.
Change-Id: I5d60f641b0c89b1ddfe38bfbd9d7285c60377f4c
Reviewed-on: https://boringssl-review.googlesource.com/4773
Reviewed-by: Adam Langley <agl@google.com>
SSL_get_current_cipher is documented by upstream to return the cipher actually
being used. However, because it reads s->session, it returns information
pertaining to the session to be offered if queried before ServerHello or early
in an abbreviated handshake.
Logic around s->session needs more comprehensive cleanup but for just this
function, defining it to be the current outgoing cipher is close to the current
semantics but for fixing the initial state (s->session->cipher is populated
when sending CCS). Store it in the SSL_AEAD_CTX which seems a natural place to
associate state pertaining to a connection half.
BUG=484744
Change-Id: Ife8db27a16615d0dbb2aec65359537243e08af7c
Reviewed-on: https://boringssl-review.googlesource.com/4733
Reviewed-by: Adam Langley <agl@google.com>
This cuts down on one config knob as well as one case in the renego
combinatorial explosion. Since the only case we care about with renego
is the client auth hack, there's no reason to ever do resumption.
Especially since, no matter what's in the session cache:
- OpenSSL will only ever offer the session it just established,
whether or not a newer one with client auth was since established.
- Chrome will never cache sessions created on a renegotiation, so
such a session would never make it to the session cache.
- The new_session + SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION
logic had a bug where it would unconditionally never offer tickets
(but would advertise support) on renego, so any server doing renego
resumption against an OpenSSL-derived client must not support
session tickets.
This also gets rid of s->new_session which is now pointless.
BUG=429450
Change-Id: I884bdcdc80bff45935b2c429b4bbc9c16b2288f8
Reviewed-on: https://boringssl-review.googlesource.com/4732
Reviewed-by: Adam Langley <agl@google.com>
As of crbug.com/484543, Chromium's SSLClientSocket is not sensitive to whether
renegotiation is enabled or not. Disable it by default and require consumers to
opt into enabling this protocol mistake.
BUG=429450
Change-Id: I2329068284dbb851da010ff1fd398df3d663bcc3
Reviewed-on: https://boringssl-review.googlesource.com/4723
Reviewed-by: Adam Langley <agl@google.com>
With SSL_get0_raw_cipherlist gone, there's no need to hold onto it.
Change-Id: I258f8bfe21cc354211a777660df680df6c49df2a
Reviewed-on: https://boringssl-review.googlesource.com/4616
Reviewed-by: Adam Langley <agl@google.com>
The only place using it is export keying material which can do the
version check inline.
Change-Id: I1893966c130aa43fa97a6116d91bb8b04f80c6fb
Reviewed-on: https://boringssl-review.googlesource.com/4615
Reviewed-by: Adam Langley <agl@google.com>
clang-format got a little confused there.
Change-Id: I46df523e8a7813a2b4e243da3df22851b3393873
Reviewed-on: https://boringssl-review.googlesource.com/4614
Reviewed-by: Adam Langley <agl@google.com>
The API is unused and rather awkward (mixes output parameters with
return values, special-case for NULL).
Change-Id: I4396f98534bf1271e53642f255e235cf82c7615a
Reviewed-on: https://boringssl-review.googlesource.com/4560
Reviewed-by: Adam Langley <agl@google.com>
Also size them based on the limits in the quantities they control (after
checking bounds at the API boundary).
BUG=404754
Change-Id: Id56ba45465a473a1a793244904310ef747f29b63
Reviewed-on: https://boringssl-review.googlesource.com/4559
Reviewed-by: Adam Langley <agl@google.com>
Not going to bother adding the compatibility macros. If they get ifdef'd
out, all the better.
BUG=404754
Change-Id: I26414d2fb84ee1f0b15a3b96c871949fe2bb7fb1
Reviewed-on: https://boringssl-review.googlesource.com/4558
Reviewed-by: Adam Langley <agl@google.com>
This is a bitmask, so the number of bits available should be the same
across all platforms.
Change-Id: I98e8d375fc7d042aeae1270174bc8fc63fba5dfc
Reviewed-on: https://boringssl-review.googlesource.com/4556
Reviewed-by: Adam Langley <agl@google.com>
Document them while I'm here. This adds a new 'preprocessor
compatibility section' to avoid breaking #ifdefs. The CTRL values
themselves are defined to 'doesnt_exist' to catch anything calling
SSL_ctrl directly until that function can be unexported completely.
BUG=404754
Change-Id: Ia157490ea8efe0215d4079556a0c7643273e7601
Reviewed-on: https://boringssl-review.googlesource.com/4553
Reviewed-by: Adam Langley <agl@google.com>
Probably we'll want some simpler server-side API later. But, as things
stand, all consumers of these functions are #ifdef'd out and have to be
because the requisite OCSP_RESPONSE types are gone.
Change-Id: Ic82b2ab3feca14c56656da3ceb3651819e3eb377
Reviewed-on: https://boringssl-review.googlesource.com/4551
Reviewed-by: Adam Langley <agl@google.com>
It's unused, but for some old #ifdef branch in wpa_supplicant's EAP-FAST
hack, before SSL_set_session_ticket_ext_cb existed.
Change-Id: Ifc11fea2f6434354f756e04e5fc3ed5f1692025e
Reviewed-on: https://boringssl-review.googlesource.com/4550
Reviewed-by: Adam Langley <agl@google.com>
This is consistent with C's free function and upstream's convention.
Change-Id: I83f6e2f5824e28f69a9916e580dc2d8cb3b94234
Reviewed-on: https://boringssl-review.googlesource.com/4512
Reviewed-by: Adam Langley <agl@google.com>
These are never used and no flags are defined anyway.
Change-Id: I206dc2838c5f68d87559a702dcb299b208cc7e1e
Reviewed-on: https://boringssl-review.googlesource.com/4493
Reviewed-by: Adam Langley <agl@google.com>
This is a really dumb API wart. Now that we have a limited set of curves that
are all reasonable, the automatic logic should just always kick in. This makes
set_ecdh_auto a no-op and, instead of making it the first choice, uses it as
the fallback behavior should none of the older curve selection APIs be used.
Currently, by default, server sockets can only use the plain RSA key exchange.
BUG=481139
Change-Id: Iaabc82de766cd00968844a71aaac29bd59841cd4
Reviewed-on: https://boringssl-review.googlesource.com/4531
Reviewed-by: Adam Langley <agl@google.com>
Instead, each module defines a static CRYPTO_EX_DATA_CLASS to hold the values.
This makes CRYPTO_cleanup_all_ex_data a no-op as spreading the
CRYPTO_EX_DATA_CLASSes across modules (and across crypto and ssl) makes cleanup
slightly trickier. We can make it do something if needbe, but it's probably not
worth the trouble.
Change-Id: Ib6f6fd39a51d8ba88649f0fa29c66db540610c76
Reviewed-on: https://boringssl-review.googlesource.com/4375
Reviewed-by: Adam Langley <agl@google.com>
Callers are required to use the wrappers now. They still need OPENSSL_EXPORT
since crypto and ssl get built separately in the standalone shared library
build.
Change-Id: I61186964e6099b9b589c4cd45b8314dcb2210c89
Reviewed-on: https://boringssl-review.googlesource.com/4372
Reviewed-by: Adam Langley <agl@google.com>
This causes any unexpected handshake records to be met with a fatal
no_renegotiation alert.
In addition, restore the redundant version sanity-checks in the handshake state
machines. Some code would zero the version field as a hacky way to break the
handshake on renego. Those will be removed when switching to this API.
The spec allows for a non-fatal no_renegotiation alert, but ssl3_read_bytes
makes it difficult to find the end of a ClientHello and skip it entirely. Given
that OpenSSL goes out of its way to map non-fatal no_renegotiation alerts to
fatal ones, this seems probably fine. This avoids needing to account for
another source of the library consuming an unbounded number of bytes without
returning data up.
Change-Id: Ie5050d9c9350c29cfe32d03a3c991bdc1da9e0e4
Reviewed-on: https://boringssl-review.googlesource.com/4300
Reviewed-by: Adam Langley <agl@google.com>
Just about everything depends on SSL_CIPHER. Move it to the top as the first
section in ssl.h. Match the header order and the source file order and document
everything. Also make a couple of minor style guide tweaks.
Change-Id: I6a810dbe79238278ac480e5ced1447055715a79f
Reviewed-on: https://boringssl-review.googlesource.com/4290
Reviewed-by: Adam Langley <agl@google.com>
These are all masks of some sort (except id which is a combined version and
cipher), so they should use fixed-size unsigned integers.
Change-Id: I058dd8ad231ee747df4b4fb17d9c1e2cbee21918
Reviewed-on: https://boringssl-review.googlesource.com/4283
Reviewed-by: Adam Langley <agl@google.com>
The rest of ssl/ still includes things everywhere, but this at least fixes the
includes that were implicit from ssl/internal.h.
Change-Id: I7ed22590aca0fe78af84fd99a3e557f4b05f6782
Reviewed-on: https://boringssl-review.googlesource.com/4281
Reviewed-by: Adam Langley <agl@google.com>
Match the other internal headers.
Change-Id: Iff7e2dd06a1a7bf993053d0464cc15638ace3aaa
Reviewed-on: https://boringssl-review.googlesource.com/4280
Reviewed-by: Adam Langley <agl@google.com>
These are the remaining untested cipher suites. Rather than add support in
runner.go, just remove them altogether. Grepping for this is a little tricky,
but nothing enables aNULL (all occurrences disable it), and all occurrences of
["ALL:] seem to be either unused or explicitly disable anonymous ciphers.
Change-Id: I4fd4b8dc6a273d6c04a26e93839641ddf738343f
Reviewed-on: https://boringssl-review.googlesource.com/4258
Reviewed-by: Adam Langley <agl@google.com>
Fix up the variable names. Also avoid the messy logic of checking whether the
label and context collide with the normal key expansion ones in the face of
adverserial inputs. Make that the caller's responsibility, just as it's already
the caller's responsibility to ensure that different calls don't overlap. (The
label should be a constant string in an IANA registry anyway.)
Change-Id: I062fadb7b6a18fa946b883be660ea9b3f0f6277c
Reviewed-on: https://boringssl-review.googlesource.com/4216
Reviewed-by: Adam Langley <agl@google.com>
There's multiple sets of APIs for selecting the curve. Fold away
SSL_OP_SINGLE_ECDH_USE as failing to set it is either a no-op or a bug. With
that gone, the consumer only needs to control the selection of a curve, with
key generation from then on being uniform. Also clean up the interaction
between the three API modes in s3_srvr.c; they were already mutually exclusive
due to tls1_check_ec_tmp_key.
This also removes all callers of EC_KEY_dup (and thus CRYPTO_dup_ex_data)
within the library.
Change-Id: I477b13bd9e77eb03d944ef631dd521639968dc8c
Reviewed-on: https://boringssl-review.googlesource.com/4200
Reviewed-by: Adam Langley <agl@google.com>
Within the library, only ssl_update_cache read them, so add a dedicated field
to replace that use.
The APIs have a handful of uninteresting callers so I've left them in for now,
but they now always return zero.
Change-Id: Ie4e36fd4ab18f9bff544541d042bf3c098a46933
Reviewed-on: https://boringssl-review.googlesource.com/4101
Reviewed-by: Adam Langley <agl@google.com>
Quite a few functions reported wrong function names when pushing
to the error stack.
Change-Id: I84d89dbefd2ecdc89ffb09799e673bae17be0e0f
Reviewed-on: https://boringssl-review.googlesource.com/4080
Reviewed-by: David Benjamin <davidben@chromium.org>
Reviewed-by: Adam Langley <agl@google.com>
Align with upstream's renames from a while ago. These names are considerably
more standard. This also aligns with upstream in that both "ECDHE" and "EECDH"
are now accepted in the various cipher string parsing bits.
Change-Id: I84c3daeacf806f79f12bc661c314941828656b04
Reviewed-on: https://boringssl-review.googlesource.com/4053
Reviewed-by: Adam Langley <agl@google.com>
This too isn't version-specific. This removes the final difference between TLS
and DTLS SSL3_ENC_METHODs and we can fold them together. (We should be able to
fold away the version-specific differences too, but all in due time.)
Change-Id: I6652d3942a0970273d46d28d7052629c81f848b5
Reviewed-on: https://boringssl-review.googlesource.com/3771
Reviewed-by: Adam Langley <agl@google.com>
It created the cert structure in SSL_CTX or SSL if it was NULL, but they can
never be NULL as the comments already said.
(Imported from upstream's 2c3823491d8812560922a58677e3ad2db4b2ec8d.)
Change-Id: I97c7bb306d6f3c18597850db9f08023b2ef74839
Reviewed-on: https://boringssl-review.googlesource.com/4042
Reviewed-by: Adam Langley <agl@google.com>
This allows the current RC4 state of an SSL* to be extracted. We have
internal uses for this functionality.
Change-Id: Ic124c4b253c8325751f49e7a4c021768620ea4b7
Reviewed-on: https://boringssl-review.googlesource.com/3722
Reviewed-by: Adam Langley <agl@google.com>
This callback receives information about the ClientHello and can decide
whether or not to allow the handshake to continue.
Change-Id: I21be28335fa74fedb5b73a310ee24310670fc923
Reviewed-on: https://boringssl-review.googlesource.com/3721
Reviewed-by: Adam Langley <agl@google.com>
Fix a few remnants of them being unsigned long. Also rename extremely unhelpful
variable names in SSL_get_error. i is now ret_code to match the header.
Change-Id: Ic31d6626bfe09c9e21c03691dfc716c5573833ea
Reviewed-on: https://boringssl-review.googlesource.com/3881
Reviewed-by: Adam Langley <agl@google.com>
Some things were misindented in the reformatting.
Change-Id: I97642000452ce4d5b4c8a39b794cec13097d8760
Reviewed-on: https://boringssl-review.googlesource.com/3870
Reviewed-by: Adam Langley <agl@google.com>
(Which is just an exported wrapper around ssl3_get_cipher_by_value.)
Change-Id: Ibba166015ce59e337ff50963ba20237ac4949aaf
Reviewed-on: https://boringssl-review.googlesource.com/3543
Reviewed-by: Adam Langley <agl@google.com>
Upstream settled in this API, and it's also the one that we expect
internally and that third_party code will expect.
Change-Id: Id7af68cf0af1f2e4d9defd37bda2218d70e2aa7b
Reviewed-on: https://boringssl-review.googlesource.com/3542
Reviewed-by: Adam Langley <agl@google.com>
Tighten up the requirements for False Start. At this point, neither
AES-CBC or RC4 are something that we want to use unless we're sure that
the server wants to speak them.
Rebase of original CL at: https://boringssl-review.googlesource.com/#/c/1980/
BUG=427721
Change-Id: I9ef7a596edeb8df1ed070aac67c315b94f3cc77f
Reviewed-on: https://boringssl-review.googlesource.com/3501
Reviewed-by: Adam Langley <agl@google.com>
Found while diagnosing some crashes and hangs in the malloc tests. This (and
the follow-up) get us further but does not quite let the malloc tests pass
quietly, even without valgrind. DTLS silently ignores some malloc failures
(confusion with silently dropping bad packets) which then translate to hangs.
Change-Id: Ief06a671e0973d09d2883432b89a86259e346653
Reviewed-on: https://boringssl-review.googlesource.com/3482
Reviewed-by: Adam Langley <agl@google.com>
False Start is the name it's known by now. Deprecate the old API and expose new
ones with the new name.
Change-Id: I32d307027e178fd7d9c0069686cc046f75fdbf6f
Reviewed-on: https://boringssl-review.googlesource.com/3481
Reviewed-by: Adam Langley <agl@google.com>
I found no users of this. We can restore it if needbe, but I don't expect
anyone to find it useful in its current form. The API is suspect for the same
reasons DTLSv1_listen was. An SSL object is stateful and assumes you already
have the endpoint separated out.
If we ever need it, server-side HelloVerifyRequest and DTLSv1_listen should be
implemented by a separate stateless listener that statelessly handles
cookieless ClientHello + HelloVerifyRequest. Once a ClientHello with a valid
cookie comes in, it sets up a stateful SSL object and passes control along to
that.
Change-Id: I86adc1dfb6a81bebe987784c36ad6634a9a1b120
Reviewed-on: https://boringssl-review.googlesource.com/3480
Reviewed-by: Adam Langley <agl@google.com>
Nothing else on SSL* is thread-safe. (Also SSL_set_generate_session_id is never
called.) This removes the last use of CRYPTO_LOCK_SSL.
Change-Id: I4cf8c05d7cef4ea27962ce29902649317c22f74d
Reviewed-on: https://boringssl-review.googlesource.com/3361
Reviewed-by: Adam Langley <agl@google.com>
The fact that an SSL_SESSION is reference-counted is already part of the API.
If an external application (like, say, the test code) wishes to participate, we
should let it.
Change-Id: If04d26a35141da14fd8d917de6cc1c10537ad11a
Reviewed-on: https://boringssl-review.googlesource.com/3344
Reviewed-by: Adam Langley <agl@google.com>
This makes the following changes:
- SSL_cutthrough_complete no longer rederives whether cutthrough happened and
just maintains a handshake bit.
- SSL_in_init no longer returns true if we are False Starting but haven't
completed the handshake. That logic was awkward as it depended on querying
in_read_app_data to force SSL_read to flush the entire handshake. Defaulting
SSL_in_init to continue querying the full handshake and special-casing
SSL_write is better. E.g. the check in bidirectional SSL_shutdown wants to know
if we're in a handshake. No internal consumer of
SSL_MODE_HANDSHAKE_CUTTHROUGH ever queries SSL_in_init directly.
- in_read_app_data is gone now that the final use is dead.
Change-Id: I05211a116d684054dfef53075cd277b1b30623b5
Reviewed-on: https://boringssl-review.googlesource.com/3336
Reviewed-by: Adam Langley <agl@google.com>
We will not support any form of DTLS renego.
Change-Id: I6eab4ed12a131ad27fdb9b5ea7cc1f35d872cd43
Reviewed-on: https://boringssl-review.googlesource.com/3230
Reviewed-by: Adam Langley <agl@google.com>
It has no callers in internal code.
Change-Id: I53cf1769b71be6a0441533b6af7d3f64aab5098a
Reviewed-on: https://boringssl-review.googlesource.com/3219
Reviewed-by: Adam Langley <agl@google.com>
This regressed in fcf25833bc. 0 return code on
unclean shutdown means the underlying BIO returned EOF, didn't push any error
code, but we haven't seen close_notify yet. The intent seems to be that you go
check errno or some BIO-specific equivalent if you care about close_notify.
Make sure test code routes all SSL_read return codes through SSL_get_error
since that's supposed to work in all cases.
(Note that rv == 0 can still give SSL_ERROR_SSL if the error queue is not
empty.)
Change-Id: I45bf9614573f876d93419ce169a4e0d9ceea9052
Reviewed-on: https://boringssl-review.googlesource.com/2981
Reviewed-by: Adam Langley <agl@google.com>
The EVP_CIPHER codepath should no longer be used with TLS. It still exists for
DTLS and SSLv3. The AEAD construction in TLS does not allow for
variable-overhead AEADs, so stateful AEADs do not include the length in the ad
parameter. Rather the AEADs internally append the unpadded length once it is
known. EVP_aead_rc4_md5_tls is modified to account for this.
Tests are added (and RC4-MD5's regenerated) for each of the new AEADs. The
cipher tests are all moved into crypto/cipher/test because there's now a lot of
them and they clutter the directory listing.
In ssl/, the stateful AEAD logic is also modified to account for stateful AEADs
with a fixed IV component, and for AEADs which use a random nonce (for the
explicit-IV CBC mode ciphers).
The new implementation fixes a bug/quirk in stateless CBC mode ciphers where
the fixed IV portion of the keyblock was generated regardless. This is at the
end, so it's only relevant for EAP-TLS which generates a MSK from the end of
the key block.
Change-Id: I2d8b8aa11deb43bde2fd733f4f90b5d5b8cb1334
Reviewed-on: https://boringssl-review.googlesource.com/2692
Reviewed-by: Adam Langley <agl@google.com>
State on s3 gets freed in both ssl3_clear and ssl3_free. Considate to just
ssl3_free. This replaces the (SSL,ssl,ssl3)_clear calls in (SSL,ssl,ssl3)_new
with the state that was initialized. This results in a little code duplication
between SSL_new and SSL_clear because state is on the wrong object. I've just
left TODOs for now; some of it will need disentangling.
We're far from it, but going forward, separate state between s and s->s3 as:
- s contains configuration state, DTLS or TLS. It is initialized from SSL_CTX,
configurable directly afterwards, and preserved across SSL_clear calls.
(Including when it's implicitly set as part of a handshake callback.)
- Connection state hangs off s->s3 (TLS) and s->d1 (DTLS). It is reset across
SSL_clear. This should happen naturally out of a ssl_free/ssl_new pair.
The goal is to avoid needing separate initialize and reset code for anything;
the point any particular state is reset is the point its owning context is
destroyed and recreated.
Change-Id: I5d779010778109f8c339c07433a0777feaf94d1f
Reviewed-on: https://boringssl-review.googlesource.com/2822
Reviewed-by: Adam Langley <agl@google.com>
Configuration data inherited from the ctx happens in SSL_new. (This also gets
in the way of using ssl3_free/ssl3_new to implement SSL_clear.)
Change-Id: I2773af91abf4e1edc0c1a324bc1e94088d7c2274
Reviewed-on: https://boringssl-review.googlesource.com/2821
Reviewed-by: Adam Langley <agl@google.com>
RAND_pseudo_bytes just calls RAND_bytes now and only returns 0 or 1. Switch all
callers within the library call the new one and use the simpler failure check.
This fixes a few error checks that no longer work (< 0) and some missing ones.
Change-Id: Id51c79deec80075949f73fa1fbd7b76aac5570c6
Reviewed-on: https://boringssl-review.googlesource.com/2621
Reviewed-by: Adam Langley <agl@google.com>
This makes SSLv23_method go through DTLS_ANY_VERSION's version negotiation
logic. This allows us to get rid of duplicate ClientHello logic. For
compatibility, SSL_METHOD is now split into SSL_PROTOCOL_METHOD and a version.
The legacy version-locked methods set min_version and max_version based this
version field to emulate the original semantics.
As a bonus, we can now handle fragmented ClientHello versions now.
Because SSLv23_method is a silly name, deprecate that too and introduce
TLS_method.
Change-Id: I8b3df2b427ae34c44ecf972f466ad64dc3dbb171
Amend the version negotiation tests to test this new spelling of max_version.
min_version will be tested in a follow-up.
Change-Id: Ic4bfcd43bc4e5f951140966f64bb5fd3e2472b01
Reviewed-on: https://boringssl-review.googlesource.com/2583
Reviewed-by: Adam Langley <agl@google.com>
SSL3_ENC_METHOD will remain version-specific while SSL_METHOD will become
protocol-specific. This finally removes all the version-specific portions of
SSL_METHOD but the version tag itself.
(SSL3_ENC_METHOD's version-specific bits themselves can probably be handled by
tracking a canonicalized protocol version. It would simplify version
comparisons anyway. The one catch is SSLv3 has a very different table. But
that's a cleanup for future. Then again, perhaps a version-specific method
table swap somewhere will be useful later for TLS 1.3.)
Much of this commit was generated with sed invocation:
s/method->ssl3_enc/enc_method/g
Change-Id: I2b192507876aadd4f9310240687e562e56e6c0b1
Reviewed-on: https://boringssl-review.googlesource.com/2581
Reviewed-by: Adam Langley <agl@google.com>
Now SSLv23 and DTLS_ANY_VERSION share version-related helper functions.
ssl3_get_method is temporary until the method switch is no longer necessary.
Put them all together so there's one place to refactor them when we add a new
version or implement min_version/max_version controls.
Change-Id: Ic28a145cad22db08a87fdb854480b22886c451c6
Reviewed-on: https://boringssl-review.googlesource.com/2580
Reviewed-by: Adam Langley <agl@google.com>
Missed this one. It requires that we be able to change an SSL_METHOD after the
after, which complicates compiling the version locking into min_version /
max_version configurations.
Change-Id: I24ba54b7939360bbfafe3feb355a65840bda7611
Reviewed-on: https://boringssl-review.googlesource.com/2579
Reviewed-by: Adam Langley <agl@google.com>
SSL_ST_BEFORE isn't a possible state anymore. It seems this state meant the
side wasn't known, back in the early SSLeay days. Now upstream guesses
(sometimes incorrectly with generic methods), and we don't initialize until
later. SSL_shutdown also doesn't bother to call ssl3_shutdown at all if the
side isn't initialized and SSL_ST_BEFORE isn't the uninitialized state, which
seems a much more sensible arrangement.
Likewise, because bare SSL_ST_BEFOREs no longer exist, SSL_in_init implies
SSL_in_before and there is no need to check both.
Change-Id: Ie680838b2f860b895073dabb4d759996e21c2824
Reviewed-on: https://boringssl-review.googlesource.com/2564
Reviewed-by: Adam Langley <agl@google.com>
There's an undefined one not used anywhere. The others ought to be const. Also
move the forward declaration to ssl.h so we don't have to use the struct name.
Change-Id: I76684cf65255535c677ec19154cac74317c289ba
Reviewed-on: https://boringssl-review.googlesource.com/2561
Reviewed-by: Adam Langley <agl@google.com>
The ClientHello record is padded to 1024 bytes when
fastradio_padding is enabled. As a result, the 3G cellular radio
is fast forwarded to DCH (high data rate) state. This mechanism
leads to a substantial redunction in terms of TLS handshake
latency, and benefits mobile apps that are running on top of TLS.
Change-Id: I3d55197b6d601761c94c0f22871774b5a3dad614
It just inserts extra flushes everywhere and isn't used.
Change-Id: I082e4bada405611f4986ba852dd5575265854036
Reviewed-on: https://boringssl-review.googlesource.com/2456
Reviewed-by: Adam Langley <agl@google.com>
first_packet is a temporary connection-global flag set for the duration of some
call and then queried from other code. This kind of logic is too difficult to
reason through. It also incorrectly treats renegotiate ClientHellos as
pre-version-negotiation records. This eliminates the need to query
enc_write_ctx (which wasn't EVP_AEAD-aware anyway).
Instead, take a leaf from Go TLS's book and add a have_version bit. This is
placed on s->s3 as it is connection state; s->s3 automatically gets reset on
SSL_clear while s doesn't.
This new flag will also be used to determine whether to do the V2ClientHello
sniff when the version-locked methods merge into SSLv23_method. It will also
replace needing to condition s->method against a dummy DTLS_ANY_VERSION value
to determine whether DTLS version negotiation has happened yet.
Change-Id: I5c8bc6258b182ba4ab175a48a84eab6d3a001333
Reviewed-on: https://boringssl-review.googlesource.com/2442
Reviewed-by: Adam Langley <agl@google.com>
If SSL_clear is called before SSL_set_{connect,accept}_state (as SSL_new does
internally), s->state will get set prematurely. Likewise, s->server is set
based on the method's ssl_accept hook, but client SSL's may be initialized from
a generic SSL_METHOD too.
Since we can't easily get rid of the generic SSL_METHODs, defer s->state and
s->server initialization until the side is known.
Change-Id: I0972e17083df22a3c09f6f087011b54c699a22e7
Reviewed-on: https://boringssl-review.googlesource.com/2439
Reviewed-by: Adam Langley <agl@google.com>
s->server's value isn't final until SSL_connect or SSL_accept is called when
using the generic SSLv23_method or DTLS_method rather than the version-locked
ones. This makes the tests pass if bssl_shim uses those methods.
It would be nicer if the generic methods were gone and an SSL* could know from
creation which half it's destined for. Unfortunately, there's a lot of code
that uses those generic methods, so we probably can't get rid of them. If they
have to stay, it seems better to standardize on only having those, rather than
support both, even if standardizing on the side-specific ones would be
preferable.
Change-Id: I40e65a8842cd6706da92263a263f664336a7f3b3
Reviewed-on: https://boringssl-review.googlesource.com/2434
Reviewed-by: Adam Langley <agl@google.com>
It should already be assigned, as of upstream's
b31b04d951e9b65bde29657e1ae057b76f0f0a73. I believe these assignments are part
of the reason it used to appear to work. Replace them with assertions. So the
assertions are actually valid, check in SSL_connect / SSL_accept that they are
never called if the socket had been placed in the opposite state. (Or we'd be
in another place where it would have appeared to work with the handshake
functions fixing things afterwards.)
Now the only places handshake_func is set are in SSL_set_{connect,accept}_state
and the method switches.
Change-Id: Ib249212bf4aa889b94c35965a62ca06bdbcf52e1
Reviewed-on: https://boringssl-review.googlesource.com/2432
Reviewed-by: Adam Langley <agl@google.com>
This comment is no longer true. It dates from OpenSSL's initial commit, but
stopped being true in upstream's 413c4f45ed0508d2242638696b7665f499d68265.
Change-Id: I47377d992a00e3d57c795fef893e19e109dd6945
Reviewed-on: https://boringssl-review.googlesource.com/2431
Reviewed-by: Adam Langley <agl@google.com>
We intend to deprecate the version-locked methods and unify them. Don't expose
that there's a method swap. (The existing version-locked methods will merely be
a shorthand for configuring minimum/maximum versions.)
There is one consumer of SSL_get_ssl_method in internal code, but it's just
some logging in test-only code. All it's doing is getting the version as a
string which should be SSL_get_version instead.
While here, also remove dead ssl_bad_method function. Also the bogus
ssl_crock_st forward-declaration. The forward declaration in base.h should be
perfectly sufficient.
Change-Id: I50480808f51022e05b078a285f58ec85d5ad7c8e
Reviewed-on: https://boringssl-review.googlesource.com/2408
Reviewed-by: Adam Langley <agl@google.com>
This is a bit of cleanup that probably should have been done at the same time
as 30ddb434bf.
For now, version negotiation is implemented with a method swap. It also
performs this swap on SSL_set_session, but this was neutered in
30ddb434bf. Rather than hackishly neuter it,
remove it outright. In addition, remove SSL_set_ssl_method. Now all method
swaps are internal: SSLv23_method switch to a version-specific method and
SSL_clear undoing it.
Note that this does change behavior: if an SSL* is created with one
version-specific method and we SSL_set_session to a session from a /different/
version, we would switch to the /other/ version-specific method. This is
extremely confusing, so it's unlikely anyone was actually expecting it.
Version-specific methods in general don't work well.
Change-Id: I72a5c1f321ca9aeb1b52ebe0317072950ba25092
Reviewed-on: https://boringssl-review.googlesource.com/2390
Reviewed-by: Adam Langley <agl@google.com>
Although the comment suggests this was added with an s->session check to
account for SSL_set_session switching methods (which we will remove in the next
commit) and to account for SSLv23_method switching methods (which we hope to
remove after a long tower of cleanup), the current codepath never runs and
can't work:
If it is called prior to handshaking or setting a session, no method switch has
happened so that codepath is dead. If it is called after setting a session, the
s->session check will keep it from running. If it is called after a handshake,
we will have established a session so that check will again keep it from
running. (Finally, if it is called during the handshake, the in_handshake check
will stop; that there is an SSL_clear call in the handshake state machine at
all is a bug that will be addressed once more things are disentangled. See
upstream's 979689aa5cfa100ccbc1f25064e9398be4b7b05c.)
Were that code to ever run, the SSL* would be in an inconsistent state. It
switches the method, but not the handshake_func. The handshake_func isn't
switched to NULL, so that will keep the SSL_connect and SSL_accept code from fixing it.
It seems the intent was that the caller would always call
SSL_set_{connect,accept}_state to fix this. But as of upstream's
b31b04d951e9b65bde29657e1ae057b76f0f0a73, this is not necessary and indeed
isn't called by a lot of consumer code.
Change-Id: I710652b1d565b77bc26f913c2066ce749a9025c9
Reviewed-on: https://boringssl-review.googlesource.com/2430
Reviewed-by: Adam Langley <agl@google.com>
The data is owned by the SSL_SESSION, so the caller should not modify it. This
will require changes in Chromium, but they should be trivial.
Change-Id: I314718530c7d810f7c7b8852339b782b4c2dace1
Reviewed-on: https://boringssl-review.googlesource.com/2409
Reviewed-by: Adam Langley <agl@google.com>
This is only used for EAP-FAST which we apparently don't need to support.
Remove it outright. We broke it in 9eaeef81fa by
failing to account for session misses.
If this changes and we need it later, we can resurrect it. Preferably
implemented differently: the current implementation is bolted badly onto the
handshake. Ideally use the supplied callbacks to fabricate an appropriate
SSL_SESSION and resume that with as much of the normal session ticket flow as
possible.
The one difference is that EAP-FAST seems to require the probing mechanism for
session tickets rather than the sane session ID echoing version. We can
reimplement that by asking the record layer to probe ahead for one byte.
Change-Id: I38304953cc36b2020611556a91e8ac091691edac
Reviewed-on: https://boringssl-review.googlesource.com/2360
Reviewed-by: Adam Langley <agl@google.com>
The ex_data index may fail to be allocated. Also don't leave a dangling pointer
in handshake_dgst if EVP_DigestInit_ex fails and check a few more init function
failures.
Change-Id: I2e99a89b2171c9d73ccc925a2f35651af34ac5fb
Reviewed-on: https://boringssl-review.googlesource.com/2342
Reviewed-by: Adam Langley <agl@google.com>
This commit fixes a number of crashes caused by malloc failures. They
were found using the -malloc-test=0 option to runner.go which runs tests
many times, causing a different allocation call to fail in each case.
(This test only works on Linux and only looks for crashes caused by
allocation failures, not memory leaks or other errors.)
This is not the complete set of crashes! More can be found by collecting
core dumps from running with -malloc-test=0.
Change-Id: Ia61d19f51e373bccb7bc604642c51e043a74bd83
Reviewed-on: https://boringssl-review.googlesource.com/2320
Reviewed-by: Adam Langley <agl@google.com>
tls1_process_sigalgs now only determines the intersection between the peer
algorithms and those configured locally. That list is queried later to
determine the hash algorithm to use when signing CertificateVerify or
ServerKeyExchange.
This is needed to support client auth on Windows where smartcards or CAPI may
not support all hash functions.
As a bonus, this does away with more connection-global state. This avoids the
current situation where digests are chosen before keys are known (for
CertificateVerify) or for slots that don't exist.
Change-Id: Iec3619a103d691291d8ebe08ef77d574f2faf0e8
Reviewed-on: https://boringssl-review.googlesource.com/2280
Reviewed-by: Adam Langley <agl@google.com>
CERT_PKEY_SIGN isn't meaningful since, without strict mode, we always fall back
to SHA-1 anyway. So the digest is never NULL when CERT_PKEY_SIGN is computed.
The entire valid_flags is now back to it's pre-1.0.2 check of seeing if the
certificate and key are configured.
This finally removes the sensitivity between valid_flags and selecting the
digest, so we can defer choosing the digest all we like.
Change-Id: I9f9952498f512d7f0cc799497f7c5b52145a48af
Reviewed-on: https://boringssl-review.googlesource.com/2288
Reviewed-by: Adam Langley <agl@google.com>
It doesn't depend on the cipher now that export ciphers are gone. It need only
be called once. Also remove the valid bit; nothing ever reads it. Its output is
also only used within a function, so make mask_k and mask_a local variables.
So all the configuration-based checks are in one place, change the input
parameter from CERT to SSL and move the PSK and ECDHE checks to the mask
computation. This avoids having to evaluate the temporary EC key for each
cipher.
The remaining uses are on the client which uses them differently (disabled
features rather than enabled ones). Those too may as well be local variables,
so leave a TODO.
Change-Id: Ibcb574341795d4016ea749f0290a793eed798874
Reviewed-on: https://boringssl-review.googlesource.com/2287
Reviewed-by: Adam Langley <agl@google.com>
There's not much point in retaining the identity hint in the SSL_SESSION. This
avoids the complexity around setting psk_identity hint on either the SSL or the
SSL_SESSION. Introduce a peer_psk_identity_hint for the client to store the one
received from the server.
This changes the semantics of SSL_get_psk_identity_hint; it now only returns
the value configured for the server. The client learns the hint through the
callback. This is compatible with the one use of this API in conscrypt (it
pulls the hint back out to pass to a callback).
Change-Id: I6d9131636b47f13ac5800b4451436a057021054a
Reviewed-on: https://boringssl-review.googlesource.com/2213
Reviewed-by: Adam Langley <agl@google.com>
