- In base.h, if BORINGSSL_PREFIX is defined, include
boringssl_prefix_symbols.h
- In all .S files, if BORINGSSL_PREFIX is defined, include
boringssl_prefix_symbols_asm.h
- In base.h, BSSL_NAMESPACE_BEGIN and BSSL_NAMESPACE_END are
defined with appropriate values depending on whether
BORINGSSL_PREFIX is defined; these macros are used in place
of 'namespace bssl {' and '}'
- Add util/make_prefix_headers.go, which takes a list of symbols
and auto-generates the header files mentioned above
- In CMakeLists.txt, if BORINGSSL_PREFIX and BORINGSSL_PREFIX_SYMBOLS
are defined, run util/make_prefix_headers.go to generate header
files
- In various CMakeLists.txt files, add "global_target" that all
targets depend on to give us a place to hook logic that must run
before all other targets (in particular, the header file generation
logic)
- Document this in BUILDING.md, including the fact that it is
the caller's responsibility to provide the symbol list and keep it
up to date
- Note that this scheme has not been tested on Windows, and likely
does not work on it; Windows support will need to be added in a
future commit
Change-Id: If66a7157f46b5b66230ef91e15826b910cf979a2
Reviewed-on: https://boringssl-review.googlesource.com/31364
Commit-Queue: David Benjamin <davidben@google.com>
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Historically, OpenSSL filled in a fake session ID for ticket-only
client sessions. Conscrypt relies on this to implement some weird Java
API where every session has an ID and may be queried out of the client
session cache and, e.g., revoked that way.
(Note that a correct client session cache is not keyed by session ID and
indeed this allows one server to knock out another server's sessions by
matching session IDs. But existing APIs are existing APIs.)
For consistency between TLS 1.2 and TLS 1.3, as well as matching
OpenSSL's TLS 1.3 implementation, do the same in TLS 1.3. Note this
smooths over our cross-version resumption tests by allowing for
something odd: it is now syntactically possible to resume a TLS 1.3
session at TLS 1.2. It doesn't matter either way, but now a different
codepath rejects certain cases.
Change-Id: I9caf4f0c3b2e2e24ae25752826d47bce77e65616
Reviewed-on: https://boringssl-review.googlesource.com/31525
Reviewed-by: Steven Valdez <svaldez@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
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Works in the 1.3 and 1.2 client handshakes, not implemented on the
server for now.
Creates an SSL_CTX option to reverify the server certificate on session
resumption. Reverification only runs the client's certificate verify callback.
Adds new states to the client handshakes: state_reverify_server_certificate in
TLS 1.2, and state_server_certificate_reverify in TLS 1.3.
Adds a negative test to make sure that by default we don't verify the
certificate on resumption, and positive tests that make sure we do when the
new option is set.
Change-Id: I3a47ff3eacb3099df4db4c5bc57f7c801ceea8f1
Bug: chromium:347402
Reviewed-on: https://boringssl-review.googlesource.com/29984
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Previously we'd partially attempted the ssl_st / bssl::SSLConnection
subclassing split, but that gets messy when we actually try to add a
destructor, because CRYPTO_EX_DATA's cleanup function needs an ssl_st*,
not a bssl::SSLConnection*. Downcasting is technically undefined at this
point and will likely offend some CFI-like check.
Moreover, it appears that even with today's subclassing split,
New<SSL>() emits symbols like:
W ssl_st*& std::forward<ssl_st*&>(std::remove_reference<ssl_st*&>::type&)
The compiler does not bother emitting them in optimized builds, but it
does suggest we can't really avoid claiming the ssl_st type name at the
symbol level, short of doing reinterpret_casts at all API boundaries.
And, of course, we've already long claimed it at the #include level.
So I've just left this defining directly on ssl_session_st. The cost is
we need to write some silly "bssl::" prefixes in the headers, but so it
goes. In the likely event we change our minds again, we can always
revise this.
Change-Id: Ieb429e8eaabe7c2961ef7f8d9234fb71f19a5e2a
Reviewed-on: https://boringssl-review.googlesource.com/29587
Commit-Queue: David Benjamin <davidben@google.com>
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Reviewed-by: Adam Langley <agl@google.com>
We forgot to do this in our original implementation on general ecosystem
grounds. It's also mandated starting draft-26.
Just to avoid unnecessary turbulence, since draft-23 is doomed to die
anyway, condition this on our draft-28 implementation. (We don't support
24 through 27.)
We'd actually checked this already on the Go side, but the spec wants a
different alert.
Change-Id: I0014cda03d7129df0b48de077e45f8ae9fd16976
Reviewed-on: https://boringssl-review.googlesource.com/28124
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The TLS 1.3 client logic used ctx instead. This is all moot as
SSL_set_SSL_CTX on a client really wouldn't work, but we should be
consistent. Unfortunately, this moves moving the pointer back to SSL
from SSL_CONFIG.
Change-Id: I45f8241e16f499ad416afd5eceb52dc82af9c4f4
Reviewed-on: https://boringssl-review.googlesource.com/27985
Commit-Queue: David Benjamin <davidben@google.com>
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|SSL_CONFIG| is a container for bits of configuration that are
unneeded after the handshake completes. By default it is retained for
the life of the |SSL|, but it may be shed at the caller's option by
calling SSL_set_shed_handshake_config(). This is incompatible with
renegotiation, and with SSL_clear().
|SSL_CONFIG| is reachable by |ssl->config| and by |hs->config|. The
latter is always non-NULL. To avoid null checks, I've changed the
signature of a number of functions from |SSL*| arguments to
|SSL_HANDSHAKE*| arguments.
When configuration has been shed, setters that touch |SSL_CONFIG|
return an error value if that is possible. Setters that return |void|
do nothing.
Getters that request |SSL_CONFIG| values will fail with an |assert| if
the configuration has been shed. When asserts are compiled out, they
will return an error value.
The aim of this commit is to simplify analysis of split-handshakes by
making it obvious that some bits of state have no effects beyond the
handshake. It also cuts down on memory usage.
Of note: |SSL_CTX| is still reachable after the configuration has been
shed, and a couple things need to be retained only for the sake of
post-handshake hooks. Perhaps these can be fixed in time.
Change-Id: Idf09642e0518945b81a1e9fcd7331cc9cf7cc2d6
Bug: 123
Reviewed-on: https://boringssl-review.googlesource.com/27644
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These are connection state, so they should be reset on SSL_clear.
Change-Id: I861fe52578836615d2719c9e1ff0911c798f336e
Reviewed-on: https://boringssl-review.googlesource.com/27384
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Change-Id: I2486dc810ea842c534015fc04917712daa26cfde
Update-Note: Now that tls13_experiment2 is gone, the server should remove the set_tls13_variant call. To avoid further churn, we'll make the server default for future variants to be what we'd like to deploy.
Reviewed-on: https://boringssl-review.googlesource.com/25104
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Update-Note: Token Binding can no longer be configured with the custom
extensions API. Instead, use the new built-in implementation. (The
internal repository should be all set.)
Bug: 183
Change-Id: I007523a638dc99582ebd1d177c38619fa7e1ac38
Reviewed-on: https://boringssl-review.googlesource.com/20645
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This is connection state, not configuration, so it must live on
ssl->s3, otherwise SSL_clear will be confused.
Change-Id: Id7c87ced5248d3953e37946e2d0673d66bfedb08
Reviewed-on: https://boringssl-review.googlesource.com/24264
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Upgrade-Note: SSL_CTX_set_tls13_variant(tls13_experiment) on the server
should switch to SSL_CTX_set_tls13_variant(tls13_experiment2).
(Configuring any TLS 1.3 variants on the server enables all variants,
so this is a no-op. We're just retiring some old experiments.)
Change-Id: I60f0ca3f96ff84bdf59e1a282a46e51d99047462
Reviewed-on: https://boringssl-review.googlesource.com/23784
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Change-Id: Ic99a949258e62cad168c2c39507ca63100a8ffe5
Reviewed-on: https://boringssl-review.googlesource.com/23264
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Commit-Queue: David Benjamin <davidben@google.com>
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We were only running a random subset of TLS 1.3 tests with variants and
let a lot of bugs through as a result.
- HelloRetryRequest-EmptyCookie wasn't actually testing what we were
trying to test.
- The second HelloRetryRequest detection needs tweaks in draft-22.
- The empty HelloRetryRequest logic can't be based on non-empty
extensions in draft-22.
- We weren't sending ChangeCipherSpec correctly in HRR or testing it
right.
- Rework how runner reads ChangeCipherSpec by setting a flag which
affects the next readRecord. This cuts down a lot of cases and works
correctly if the client didn't send early data. (In that case, we
don't flush CCS until EndOfEarlyData and runner deadlocks waiting for
the ChangeCipherSpec to arrive.)
Change-Id: I559c96ea3a8b350067e391941231713c6edb2f78
Reviewed-on: https://boringssl-review.googlesource.com/23125
Reviewed-by: Steven Valdez <svaldez@chromium.org>
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This introduces a wire change to Experiment2/Experiment3 over 0RTT, however
as there is never going to be a 0RTT deployment with Experiment2/Experiment3,
this is valid.
Change-Id: Id541d195cbc4bbb3df7680ae2a02b53bb8ae3eab
Reviewed-on: https://boringssl-review.googlesource.com/22744
Commit-Queue: David Benjamin <davidben@google.com>
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Change-Id: I46686aea9b68105cfe70a11db0e88052781e179c
Reviewed-on: https://boringssl-review.googlesource.com/22164
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Reviewed-by: Steven Valdez <svaldez@google.com>
While a fairly small hook, open_close_notify is pretty weird. It
processes things at the record level and not above. Notably, this will
break if it skips past a TLS 1.3 KeyUpdate.
Instead, it can share the core part of SSL_read/SSL_peek, with slight
tweaks to post-handshake processing. Note this does require some tweaks
to that code. Notably, to retain the current semantics that SSL_shutdown
does not call funny callbacks, we suppress tickets.
Change-Id: Ia0cbd0b9f4527f1b091dd2083a5d8c7efb2bac65
Reviewed-on: https://boringssl-review.googlesource.com/21885
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These are common between TLS and DTLS so should not have the ssl3_
prefix. (TLS-only stuff should really have a tls_ prefix, but we still
have a lot of that one.)
This also fixes a stray reference to ssl3_send_client_key_exchange..
Change-Id: Ia05b360aa090ab3b5f075d5f80f133cbfe0520d4
Reviewed-on: https://boringssl-review.googlesource.com/21346
Commit-Queue: David Benjamin <davidben@google.com>
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The handshake should be generic between TLS and DTLS.
Change-Id: I6feb2f013dd5d771f206750653ab9d117d7ea716
Reviewed-on: https://boringssl-review.googlesource.com/21348
Commit-Queue: David Benjamin <davidben@google.com>
Reviewed-by: Steven Valdez <svaldez@google.com>
The function has exactly one caller. Also add some comments.
Change-Id: I1566aed625449c91f25a777f5a4232d236019ed7
Reviewed-on: https://boringssl-review.googlesource.com/20673
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This adds a CopyFrom companion to Init as a replacement for CBS_stow.
Bug: 132
Change-Id: I4d77291b07552bd2286a09f8ba33655d6d97c853
Reviewed-on: https://boringssl-review.googlesource.com/20670
Reviewed-by: David Benjamin <davidben@google.com>
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There seems to be a GCC bug that requires kDefaultGroups having an
explicit cast, but this is still much nicer than void(const uint16_t **,
size_t *) functions.
Bug: 132
Change-Id: Id586d402ca0b8a01370353ff17295e71ee219ff3
Reviewed-on: https://boringssl-review.googlesource.com/20668
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
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An Array<T> is an owning Span<T>. It's similar to absl::FixedArray<T>
but plays well with OPENSSL_malloc and doesn't implement inlining. With
OPENSSL_cleanse folded into OPENSSL_free, we could go nuts with
UniquePtr<uint8_t>, but having the pointer and length tied together is
nice for other reasons. Notably, Array<T> plays great with Span<T>.
Also switch the other parameter to a Span.
Bug: 132
Change-Id: I4cdcf810cf2838208c8ba9fcc6215c1e369dffb8
Reviewed-on: https://boringssl-review.googlesource.com/20667
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The new_session_cb callback should not be run if SSL_SESS_CACHE_CLIENT
is off.
Change-Id: I1ab320f33688f186b241d95c81775331a5c5b1a1
Reviewed-on: https://boringssl-review.googlesource.com/20065
Reviewed-by: Steven Valdez <svaldez@google.com>
Commit-Queue: Steven Valdez <svaldez@google.com>
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That's the last of it!
Change-Id: I93d1f5ab7e95b2ad105c34b24297a0bf77625263
Reviewed-on: https://boringssl-review.googlesource.com/19784
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
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Bug: 128
Change-Id: Ief3779b1c43dd34a154a0f1d2f94d0da756bc07a
Reviewed-on: https://boringssl-review.googlesource.com/19144
Reviewed-by: David Benjamin <davidben@google.com>
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SSL_state_string_long and SSL_state_string are often used for debugging
purposes. The latter's 6-letter codes are absurd, but
SSL_state_string_long is plausible. So we don't lose this when
converging state machines or switching to TLS 1.3, add this to TLS 1.3.
Bug: 128
Change-Id: Iec6529a4d9eddcf08bc9610137b4ccf9ea2681a6
Reviewed-on: https://boringssl-review.googlesource.com/19524
Commit-Queue: Steven Valdez <svaldez@google.com>
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This loosens the earlier restriction to match Channel ID. Both may be
configured and offered, but the server is obligated to select only one
of them. This aligns with the current tokbind + 0-RTT draft where the
combination is signaled by a separate extension.
Bug: 183
Change-Id: I786102a679999705d399f0091f76da236be091c2
Reviewed-on: https://boringssl-review.googlesource.com/19124
Reviewed-by: Steven Valdez <svaldez@google.com>
Commit-Queue: Steven Valdez <svaldez@google.com>
Rather than init_msg/init_num, there is a get_message function which
either returns success or try again. This function does not advance the
current message (see the previous preparatory change). It only completes
the current one if necessary.
Being idempotent means it may be freely placed at the top of states
which otherwise have other asychronous operations. It also eases
converting the TLS 1.2 state machine. See
https://docs.google.com/a/google.com/document/d/11n7LHsT3GwE34LAJIe3EFs4165TI4UR_3CqiM9LJVpI/edit?usp=sharing
for details.
The read_message hook (later to be replaced by something which doesn't
depend on BIO) intentionally does not finish the handshake, only "makes
progress". A follow-up change will align both TLS and DTLS on consuming
one handshake record and always consuming the entire record (so init_buf
may contain trailing data). In a few places I've gone ahead and
accounted for that case because it was more natural to do so.
This change also removes a couple pointers of redundant state from every
socket.
Bug: 128
Change-Id: I89d8f3622d3b53147d69ee3ac34bb654ed044a71
Reviewed-on: https://boringssl-review.googlesource.com/18806
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Commit-Queue: David Benjamin <davidben@google.com>
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Instead, the DTLS driver can detect these states implicitly based on
when we write flights and when the handshake completes. When we flush a
new flight, the peer has enough information to send their reply, so we
start a timer. When we begin assembling a new flight, we must have
received the final message in the peer's flight. (If there are
asynchronous events between, we may stop the timer later, but we may
freely stop the timer anytime before we next try to read something.)
The only place this fails is if we were the last to write a flight,
we'll have a stray timer. Clear it in a handshake completion hook.
Change-Id: I973c592ee5721192949a45c259b93192fa309edb
Reviewed-on: https://boringssl-review.googlesource.com/18864
Reviewed-by: Steven Valdez <svaldez@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
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SSLECDHContext has the acronyms problem, so I went with SSLKeyShare to
match the TLS 1.3 terminology. It's also a little shorter. Accept and
Finish, for now, take raw output pointers in anticipation of some
bssl::Array and maybe bssl::CleansedArray types.
Bug: 132
Change-Id: I427c7c0eac95704f3ad093676c504c2848f5acb9
Reviewed-on: https://boringssl-review.googlesource.com/18265
Reviewed-by: Steven Valdez <svaldez@google.com>
I started by switching a couple fields to SSL_HANDSHAKE and then kept
following transitive bits.
Bug: 132
Change-Id: I640dadd3558615fa38c7e8498d4efe7449b0658f
Reviewed-on: https://boringssl-review.googlesource.com/18245
Reviewed-by: Steven Valdez <svaldez@google.com>
Commit-Queue: Steven Valdez <svaldez@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
The previous attempt around the 'struct ssl_st' compatibility mess
offended OSS-Fuzz and UBSan because one compilation unit passed a
function pointer with ssl_st* and another called it with
bssl::SSLConnection*.
Linkers don't retain such types, of course, but to silence this alert,
instead make C-visible types be separate from the implementation and
subclass the public type. This does mean we risk polluting the symbol
namespace, but hopefully the compiler is smart enough to inline the
visible struct's constructor and destructor.
Bug: 132
Change-Id: Ia75a89b3a22a202883ad671a630b72d0aeef680e
Reviewed-on: https://boringssl-review.googlesource.com/18224
Commit-Queue: David Benjamin <davidben@google.com>
Commit-Queue: Steven Valdez <svaldez@google.com>
Reviewed-by: Steven Valdez <svaldez@google.com>
Clear out some of the easy cases.
Bug: 132
Change-Id: Icd5c246cb6bec4a96c72eccd6569235c3d030ebd
Reviewed-on: https://boringssl-review.googlesource.com/18204
Commit-Queue: Steven Valdez <svaldez@google.com>
Reviewed-by: Steven Valdez <svaldez@google.com>
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This adds several utilities as replacements for new and delete and makes
bssl::UniquePtr work with our private types.
Later work can convert more incrementally. I did this one more
aggressively to see how it'd work. Unfortunately, in doing so, I needed
to remove the NULL SSL_AEAD_CTX "method" receiver trick to appease
clang. The null cipher is now represented by a concrete SSL_AEAD_CTX.
The long-lived references to SSL_AEAD_CTX are not yet in types with
constructors, so they still bare Delete rather than UniquePtr for now.
Though this does mean we may be able to move the sequence number into
SSLAEADContext later which is one less object for DTLS to carry around.
Bug: 132
Change-Id: I506b404addafb692055d5709b0ca6d5439a4e6be
Reviewed-on: https://boringssl-review.googlesource.com/18164
Reviewed-by: Adam Langley <agl@google.com>
Reviewed-by: David Benjamin <davidben@google.com>
This is horrible, but everything else I tried was worse. The goal with
this CL is to take the extern "C" out of ssl/internal.h and move most
symbols to namespace bssl, so we can start using C++ helpers and
destructors without worry.
Complications:
- Public API functions must be extern "C" and match their declaration in
ssl.h, which is unnamespaced. C++ really does not want you to
interleave namespaced and unnamespaced things. One can actually write
a namespaced extern "C" function, but this means, from C++'s
perspective, the function is namespaced. Trying to namespace the
public header would worked but ended up too deep a rabbithole.
- Our STACK_OF macros do not work right in namespaces.
- The typedefs for our exposed but opaque types are visible in the
header files and copied into consuming projects as forward
declarations. We ultimately want to give SSL a destructor, but
clobbering an unnamespaced ssl_st::~ssl_st seems bad manners.
- MSVC complains about ambiguous names if one typedefs SSL to bssl::SSL.
This CL opts for:
- ssl/*.cc must begin with #define BORINGSSL_INTERNAL_CXX_TYPES. This
informs the public headers to create forward declarations which are
compatible with our namespaces.
- For now, C++-defined type FOO ends up at bssl::FOO with a typedef
outside. Later I imagine we'll rename many of them.
- Internal functions get namespace bssl, so we stop worrying about
stomping the tls1_prf symbol. Exported C functions are stuck as they
are. Rather than try anything weird, bite the bullet and reorder files
which have a mix of public and private functions. I expect that over
time, the public functions will become fairly small as we move logic
to more idiomatic C++.
Files without any public C functions can just be written normally.
- To avoid MSVC troubles, some bssl types are renamed to CPlusPlusStyle
in advance of them being made idiomatic C++.
Bug: 132
Change-Id: Ic931895e117c38b14ff8d6e5a273e868796c7581
Reviewed-on: https://boringssl-review.googlesource.com/18124
Reviewed-by: David Benjamin <davidben@google.com>
