We already have some cases where the default is DECODE_ERROR and, rather
than have two defaults, just harmonise on that. (INTERNAL_ERROR might
make more sense in some cases, but we don't want to have to remember
what the default is in each case and nobody really cares what the actual
value is anyway.)
Change-Id: I28007898e8d6e7415219145eb9f43ea875028ab2
Reviewed-on: https://boringssl-review.googlesource.com/13720
Reviewed-by: Adam Langley <agl@google.com>
Change-Id: If97da565155292d5f0de5c6a8b0fd8508398768a
Reviewed-on: https://boringssl-review.googlesource.com/13564
Commit-Queue: David Benjamin <davidben@google.com>
Reviewed-by: Adam Langley <agl@google.com>
This ABCD thing with multiple ways to enter the same function is
confusing. ClientHello processing is the most egregious of these, so
split it up ahead of time as an intermediate step.
States remain named as-is due to them being exposed as public API. We
should have a story for which subset of states we need to promise as
public API and to intentionally break all other cases (map to some
generic value) before we go too far there.
BUG=128
Change-Id: Id9d28c6de14bd53c3294552691cebe705748f489
Reviewed-on: https://boringssl-review.googlesource.com/13563
Reviewed-by: Adam Langley <agl@google.com>
Previously, the alert was uninitialised.
(Thanks to Robert Swiecki and honggfuzz.)
Change-Id: I2d4eb96b0126f3eb502672b2600ad43ae140acec
Reviewed-on: https://boringssl-review.googlesource.com/13700
Commit-Queue: Adam Langley <agl@google.com>
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The Go side (thankfully not the C side) was not fully updated for the
exporter secret derivation being earlier at some point. Also TLS 1.2
upgrades the PRF hash for pre-1.2 ciphers to SHA-256, so make sure we
cover that.
Change-Id: Ibdf50ef500e7e48a52799ac75577822bc304a613
Reviewed-on: https://boringssl-review.googlesource.com/13663
Reviewed-by: Steven Valdez <svaldez@google.com>
Reviewed-by: David Benjamin <davidben@google.com>
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Change-Id: I471880d785c38123e038279f67348bf02b47d091
Reviewed-on: https://boringssl-review.googlesource.com/13662
Reviewed-by: Steven Valdez <svaldez@google.com>
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Replicate the logic in the AllTests targets to dump the error queue on
failure. GTest seems to print to stdout, so we do here too.
BUG=129
Change-Id: I623b695fb9a474945834c3653728f54e5b122187
Reviewed-on: https://boringssl-review.googlesource.com/13623
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The more complex ones will want a TEST_P, but here are a few easy ones
to start with.
BUG=129
Change-Id: I2e341d04910c0b05a5bc7afec961c4541ca7db41
Reviewed-on: https://boringssl-review.googlesource.com/13622
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Right now the only way to set an SCT list is the per-context function
SSL_CTX_set_signed_cert_timestamp_list. However this assumes that all the
SSLs generated from a SSL_CTX share the same SCT list, which is wrong.
In order to avoid memory duplication in case SSL_CTX has its own list, a
CRYPTO_BUFFER is used for both SSL_CTX and SSL.
Change-Id: Id20e6f128c33cf3e5bff1be390645441be6518c6
Reviewed-on: https://boringssl-review.googlesource.com/13642
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As previously discussed, it turns out we don't actually need this, so
there's no point in keeping it.
Change-Id: If549c917b6bd818cd36948e37cb7839c8d122b1a
Reviewed-on: https://boringssl-review.googlesource.com/13641
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The SNI extension may be ACKed by the server. This is kind of pointless,
but make sure we cover these codepaths.
Change-Id: I14b25ab865dd6e35a30f11ebc9027a1518bbeed9
Reviewed-on: https://boringssl-review.googlesource.com/13633
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Change-Id: I878dfb9f5d3736c3ec0d5fa39052cca58932dbb7
Reviewed-on: https://boringssl-review.googlesource.com/12981
Reviewed-by: David Benjamin <davidben@google.com>
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Change-Id: I38cd04fa40edde4e4dd31fdc16bbf92985430198
Reviewed-on: https://boringssl-review.googlesource.com/12702
Reviewed-by: David Benjamin <davidben@google.com>
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ssl_get_new_session would stash a copy of the configured hostname
into the SSL_SESSION on the server. Servers have no reason to
configuring that anyway, but, if one did, we'd leak when filling in
the client-supplied SNI later.
Remove this code and guard against this by remembering to OPENSSL_free
when overwriting that field (although it should always be NULL).
Reported-By: Robert Swiecki <swiecki@google.com>
Change-Id: Ib901b5f82e5cf818060ef47a9585363e05dd9932
Reviewed-on: https://boringssl-review.googlesource.com/13631
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With the CRYPTO_BUFFER stuff, this API is now slightly more complex. Add
some tests as a sanity-check.
Change-Id: I9da20e3eb6391fc86ed215c5fabec71aa32ef56f
Reviewed-on: https://boringssl-review.googlesource.com/13620
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This is purely to support curl, which now has HTTPS proxy support that,
sadly, uses the BIO SSL. Don't use the BIO SSL for anything else.
Change-Id: I9ef6c9773ec87a11e0b5a93968386ac4b351986d
Reviewed-on: https://boringssl-review.googlesource.com/13600
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The TLS 1.2 and 1.3 state machines do the exact same thing at the
beginning. Let them process the ClientHello extensions, etc., and
finalize the certificate in common code. Once we start picking
parameters, we begin to diverge. Everything before this point is
arguably part of setting up the configuration, which is
version-agnostic.
BUG=128
Change-Id: I293ea3087ecbc3267bd8cdaa011c98d26a699789
Reviewed-on: https://boringssl-review.googlesource.com/13562
Commit-Queue: David Benjamin <davidben@google.com>
Reviewed-by: Adam Langley <agl@google.com>
The version negotiation logic was a little bizarrely wedged in the
middle of the state machine. (We don't support server renegotiation, so
have_version is always false here.)
BUG=128
Change-Id: I9448dce374004b92e8bd5172c36a4e0eea51619c
Reviewed-on: https://boringssl-review.googlesource.com/13561
Commit-Queue: David Benjamin <davidben@google.com>
Reviewed-by: Adam Langley <agl@google.com>
It has no other callers, now that the handshake is written elsewhere.
Change-Id: Ib04bbdc4a54fc7d01405d9b3f765fa9f186244de
Reviewed-on: https://boringssl-review.googlesource.com/13540
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In TLS 1.2, resumption's benefits are more-or-less subsumed by False
Start. TLS 1.2 resumption lifetime is bounded by how much traffic we are
willing to encrypt without fresh key material, so the lifetime is short.
Renewal uses the same key, so we do not allow it to increase lifetimes.
In TLS 1.3, resumption unlocks 0-RTT. We do not implement psk_ke, so
resumption incorporates fresh key material into both encrypted traffic
(except for early data) and renewed tickets. Thus we are both more
willing to and more interested in longer lifetimes for tickets. Renewal
is also not useless. Thus in TLS 1.3, lifetime is bound separately by
the lifetime of a given secret as a psk_dhe_ke authenticator and the
lifetime of the online signature which authenticated the initial
handshake.
This change maintains two lifetimes on an SSL_SESSION: timeout which is
the renewable lifetime of this ticket, and auth_timeout which is the
non-renewable cliff. It also separates the TLS 1.2 and TLS 1.3 timeouts.
The old session timeout defaults and configuration apply to TLS 1.3, and
we define new ones for TLS 1.3.
Finally, this makes us honor the NewSessionTicket timeout in TLS 1.3.
It's no longer a "hint" in 1.3 and there's probably value in avoiding
known-useless 0-RTT offers.
BUG=120
Change-Id: Iac46d56e5a6a377d8b88b8fa31f492d534cb1b85
Reviewed-on: https://boringssl-review.googlesource.com/13503
Reviewed-by: Adam Langley <agl@google.com>
This special-case is almost unexposed (the timeout is initialized to the
default) except if the caller calls SSL_CTX_set_timeout(0). Preserve
that behavior by mapping 0 to SSL_DEFAULT_SESSION_TIMEOUT in
SSL_CTX_set_timeout but simplify the internal state.
Change-Id: Ice03a519c25284b925f1e0cf485f2d8c54dc5038
Reviewed-on: https://boringssl-review.googlesource.com/13502
Commit-Queue: David Benjamin <davidben@google.com>
Reviewed-by: Adam Langley <agl@google.com>
It is impossible to have to call dispatch_alert when writing application
data. Now that we don't send warning alerts through ssl3_send_alert, all
alerts are closure alerts, which means attempts to write will fail.
This prunes a lot of dead code, avoiding the re-entrancy in the write
path. With that gone, tracking alert_dispatch is much more
straightforward.
BUG=146
Change-Id: Ie5fe677daee71e463d79562f3d2cea822a92581d
Reviewed-on: https://boringssl-review.googlesource.com/13500
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Reviewed-by: Steven Valdez <svaldez@google.com>
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
Fix this and add a test. Otherwise enabling TLS 1.3 will cause a server
to blow through its session cache.
Change-Id: I67edbc468faedfd94a6c30cf842af085a6543b50
Reviewed-on: https://boringssl-review.googlesource.com/13501
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This change moves the interface between |X509| and |CRYPTO_BUFFER| a
little further out, towards the API.
Change-Id: I1c014d20f12ad83427575843ca0b3bb22de1a694
Reviewed-on: https://boringssl-review.googlesource.com/13365
Reviewed-by: Adam Langley <agl@google.com>
The recent CRYPTO_BUFFER changes meant that |X509| objects passed to
SSL_CTX_add_extra_chain_cert would be |free|ed immediately. However,
some third-party code (at least serf and curl) continue to use the
|X509| even after handing over ownership.
In order to unblock things, keep the past |X509| around for a while to
paper over the issues with those libraries while we try and upstream
changes.
Change-Id: I832b458af9b265749fed964658c5c34c84d518df
Reviewed-on: https://boringssl-review.googlesource.com/13480
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Change-Id: I44202457841f06a899e140f78ae8afa7ac720283
Reviewed-on: https://boringssl-review.googlesource.com/12600
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Move to explicit hashing everywhere, matching TLS 1.2 with TLS 1.3. The
ssl_get_message calls between all the handshake states are now all
uniform so, when we're ready, we can rewire the TLS 1.2 state machine to
look like the TLS 1.3 one. (ssl_get_message calls become an
ssl_hs_read_message transition, reuse_message becomes an ssl_hs_ok
transition.)
This avoids some nuisance in processing the ServerHello at the 1.2 / 1.3
transition.
The downside of explicit hashing is we may forget to hash something, but
this will fail to interop with our tests and anyone else, so we should
be able to catch it.
BUG=128
Change-Id: I01393943b14dfaa98eec2a78f62c3a41c29b3a0e
Reviewed-on: https://boringssl-review.googlesource.com/13266
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This is kind of annoying (even new state is needed to keep the layering
right). As part of aligning the read paths of the TLS 1.2 and TLS 1.3
state machine, we'll want to move to states calling
ssl_hash_current_message when the process the message, rather than when
the message is read. Right now the TLS 1.2 optional message story
(reuse_message) depends on all messages preceded by an optional message
using ssl_hash_message. For instance, if TLS 1.2 decided to place
CertificateStatus before ServerKeyExchange, we would not be able to
handle it.
However, V2ClientHello, by being handled in the message layer, relies on
ssl_get_message-driven hashing to replace the usual ClientHello hash
with a hash of something custom. This switches things so rather than
ClientHellos being always pre-hashed by the message layer, simulated
ClientHellos no-op ssl_hash_current_message.
This just replaces one hack with another (V2ClientHello is inherently
nasty), but this hack should be more compatible with future plans.
BUG=128
Change-Id: If807ea749d91e306a37bb2362ecc69b84bf224c9
Reviewed-on: https://boringssl-review.googlesource.com/13265
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This aligns the TLS 1.2 state machine closer with the TLS 1.3 state
machine. This is more work for the handshake, but ultimately the
plan is to take the ssl_get_message call out of the handshake (so it is
just the state machine rather than calling into BIO), so the parameters
need to be folded out as in TLS 1.3.
The WrongMessageType-* family of tests should make sure we don't miss
one of these.
BUG=128
Change-Id: I17a1e6177c52a7540b2bc6b0b3f926ab386c4950
Reviewed-on: https://boringssl-review.googlesource.com/13264
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If an existing chain had a NULL placeholder for a leaf we could end up
trying to increment its reference count. That results in a crash at
configuration time. Found via the SSL_CTX API fuzzer.
BUG=oss-fuzz:480
Change-Id: I0ddc2cbde2e625015768f1bdc8da625e8a4f05fd
Reviewed-on: https://boringssl-review.googlesource.com/13383
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This was originally changed so that flush_flight could forward BIO_write
errors as-is, but we can and probably should still map BIO_flush errors.
This is unlikely to matter (every relevant BIO likely just has a no-op
flush which returns one), but, e.g., our file BIO returns 0, not -1, on
error.
We possibly should also be mapping BIO_write errors, but I'll leave that
alone for now. It's primarily BIO_read where the BIO return value must
be preserved due to error vs. EOF.
(We probably can just remove the BIO_flush calls altogether, but since
the buffer BIO forwarded the flush signal it would be a user-visible
behavior change to confirm.)
Change-Id: Ib495cc5d043867cf964f99b7ee4535114f7b2230
Reviewed-on: https://boringssl-review.googlesource.com/13367
Commit-Queue: David Benjamin <davidben@google.com>
Reviewed-by: Adam Langley <agl@google.com>
(I split this change off to minimise the noise in future diffs that
actually do something meaningful.)
Change-Id: I7a054dcfc90a44ab5bb89b8f46704e5e3410e524
Reviewed-on: https://boringssl-review.googlesource.com/13364
Commit-Queue: Adam Langley <agl@google.com>
Reviewed-by: David Benjamin <davidben@google.com>
Reviewed-by: Adam Langley <agl@google.com>
This change converts the |CERT| struct to holding certificates as binary
blobs, rather than in parsed form. The members for holding the parsed
form are still there, however, but are only used as a cache for the
event that someone asks us for a non-owning pointer to the parsed leaf
or chain.
Next steps:
* Move more functions in to ssl_x509.c
* Create an X509_OPS struct of function pointers that will hang off
the |SSL_METHOD| to abstract out the current calls to crypto/x509
operations.
BUG=chromium:671420
Change-Id: Ifa05d88c49a987fd561b349705c9c48f106ec868
Reviewed-on: https://boringssl-review.googlesource.com/13280
Reviewed-by: Adam Langley <agl@google.com>
This resolves a TODO, trims per-connection memory, and makes more sense.
These masks have nothing to do with certificate configuration.
Change-Id: I783e6158e51f58cce88e3e68dfa0ed965bdc894c
Reviewed-on: https://boringssl-review.googlesource.com/13368
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Reviewed-by: David Benjamin <davidben@google.com>
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Until we've gotten it fully working, we should not mint any of these
SSL_SESSIONs, to avoid constraining future versions of our client code.
Notably, if any of our TLS 1.3 clients today serialized sessions, we
would need to rev the serialization format. Without opting into 0-RTT, a
TLS 1.3 client will create SSL_SESSIONs tagged as 0-RTT-capable but
missing important fields (ALPN, etc.). When that serialized session
makes its way to a future version of our client code, it would disagree
with the server about the ALPN value stored in the ticket and cause
interop failures.
I believe the only client code enabling TLS 1.3 right now is Chrome, and
the window is small, so it should be fine. But fix this now before it
becomes a problem.
Change-Id: Ie2b109f8d158017a6f3b4cb6169050d38a66b31c
Reviewed-on: https://boringssl-review.googlesource.com/13342
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Commit-Queue: David Benjamin <davidben@google.com>
Change-Id: I324743e7d1864fbbb9653209ff93e4da872c8d31
Reviewed-on: https://boringssl-review.googlesource.com/13340
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Change-Id: Idc93fdca2f1c5c23e4ba48c4efed2edbad1e857b
Reviewed-on: https://boringssl-review.googlesource.com/12521
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The TLS 1.2 state machine now looks actually much closer to the TLS 1.3
one on the write side. Although the write states still have a BIO-style
return, they don't actually send anything anymore. Only the BIO flush
state does. Reads are still integrated into the states themselves
though, so I haven't made it match TLS 1.3 yet.
BUG=72
Change-Id: I7708162efca13cd335723efa5080718a5f2808ab
Reviewed-on: https://boringssl-review.googlesource.com/13228
Reviewed-by: Adam Langley <agl@google.com>
The SSL code suffers from needing too many verbs for variations on
writing things without actually writing them. We used to have queuing
the message up to be written to the buffer BIO, writing to the buffer
BIO, and flushing the buffer BIO. (Reading, conversely, has a similar
mess of verbs.)
Now we just have adding to the pending flight and flushing the pending
flight, match the SSL_PROTOCOL_METHOD naming.
BUG=72
Change-Id: I332966928bf13f03dfb8eddd519c2fefdd7f24d4
Reviewed-on: https://boringssl-review.googlesource.com/13227
Reviewed-by: Adam Langley <agl@google.com>
Large chunks of contiguous messages can now be sent in a row. Notably,
the ServerHello flight involves a number of optional messages which can
now be collapsed into straight-line code.
BUG=72
Change-Id: I1429d22a12401aa0f811a04e495bd5d754c084a4
Reviewed-on: https://boringssl-review.googlesource.com/13226
Reviewed-by: Adam Langley <agl@google.com>
On the TLS side, we introduce a running buffer of ciphertext. Queuing up
pending data consists of encrypting the record into the buffer. This
effectively reimplements what the buffer BIO was doing previously, but
this resizes to fit the whole flight.
As part of this, rename all the functions to add to the pending flight
to be more uniform. This CL proposes "add_foo" to add to the pending
flight and "flush_flight" to drain it.
We add an add_alert hook for alerts but, for now, only the SSL 3.0
warning alert (sent mid-handshake) uses this mechanism. Later work will
push this down to the rest of the write path so closure alerts use it
too, as in DTLS. The intended end state is that all the ssl_buffer.c and
wpend_ret logic will only be used for application data and eventually
optionally replaced by the in-place API, while all "incidental" data
will be handled internally.
For now, the two buffers are mutually exclusive. Moving closure alerts
to "incidentals" will change this, but flushing application data early
is tricky due to wpend_ret. (If we call ssl_write_buffer_flush,
do_ssl3_write doesn't realize it still has a wpend_ret to replay.) That
too is all left alone in this change.
To keep the diff down, write_message is retained for now and will be
removed from the state machines in a follow-up change.
BUG=72
Change-Id: Ibce882f5f7196880648f25d5005322ca4055c71d
Reviewed-on: https://boringssl-review.googlesource.com/13224
Reviewed-by: Adam Langley <agl@google.com>
Instead, "writing" a message merely adds it to the outgoing_messages
structure. The code to write the flight then loops over it all and now
shares code with retransmission. The verbs here are all a little odd,
but they'll be fixed in later commits.
In doing so, this fixes a slight miscalculation of the record-layer
overhead when retransmitting a flight that spans two epochs. (We'd use
the encrypted epoch's overhead for the unencrypted epoch.)
BUG=72
Change-Id: I8ac897c955cc74799f8b5ca6923906e97d6dad17
Reviewed-on: https://boringssl-review.googlesource.com/13223
Reviewed-by: Adam Langley <agl@google.com>
This was replaced by the more general CLIENT_RANDOM scheme that records
the master secret. Support was added in Wireshark 1.8.0, released in
June 2012. At this point, ECDHE is sufficiently widely deployed that
anyone that cares about this feature must have upgraded their Wireshark
by now.
Change-Id: I9b708f245ec8728c1999daf91aca663be7d25661
Reviewed-on: https://boringssl-review.googlesource.com/13263
Reviewed-by: David Benjamin <davidben@google.com>
This will let us avoid a scratch buffer when assembling DTLS handshake
packets in the write_message-less flow.
BUG=72
Change-Id: I15e78efe3a9e3933c307e599f0043427330f4a9e
Reviewed-on: https://boringssl-review.googlesource.com/13262
Commit-Queue: David Benjamin <davidben@google.com>
Reviewed-by: Adam Langley <agl@google.com>
We need to suppress a few tests on the system Android build until
RSA-PSS is shipped there.
Change-Id: I5843997aae9fa499ec08d76f44fdf3b523599e1c
Reviewed-on: https://boringssl-review.googlesource.com/13267
Commit-Queue: David Benjamin <davidben@google.com>
Reviewed-by: Adam Langley <agl@google.com>
Change-Id: Ifc28887cbf91c7a80bdaf56e3bf80b2f8cfa7d53
Reviewed-on: https://boringssl-review.googlesource.com/13260
Commit-Queue: David Benjamin <davidben@google.com>
Reviewed-by: Adam Langley <agl@google.com>
Eventually, all uses of crypto/x509 will be from ssl_x509.c, but this is
just a start.
Change-Id: I2f38cdcbf18b1f26add0aac10a70af10a79dee0e
Reviewed-on: https://boringssl-review.googlesource.com/13242
Reviewed-by: Adam Langley <agl@google.com>
