Using the arg parameter does not work well. This is purely an
SSL_CTX-level callback, not an SSL-level one.
Change-Id: Ib968807efbe7dd08e71cea1c4d8034a52c729d45
Reviewed-on: https://boringssl-review.googlesource.com/13629
Reviewed-by: Steven Valdez <svaldez@google.com>
Reviewed-by: David Benjamin <davidben@google.com>
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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
Commit-Queue: Adam Langley <agl@google.com>
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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>
Change-Id: I324743e7d1864fbbb9653209ff93e4da872c8d31
Reviewed-on: https://boringssl-review.googlesource.com/13340
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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>
It's not completely clear to me why select_cetificate_cb behaves the way it
does, however not only is it confusing, but it makes assumptions about the
application using BoringSSL (it's not always possible to implement custom
logic outside of the callbacks provided by libssl), that make this callback
somewhat useless.
Case in point, the callback can be used for changing min/max protocol versions
based on per-site policies, and select_certificate_cb is the only place where
SSL_set_min/max_proto_version() can be used (e.g. you can't call them in
cert_cb because it's too late), but the decision on the specific versions to
use might depend on configuration that needs retrieving asynchronously from
over the network, which requires re-running the callback multiple times.
Change-Id: Ia8e151b163628545373e7fd1f327e9af207478a6
Reviewed-on: https://boringssl-review.googlesource.com/13000
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
We have a test somewhere which tries to read off of it. Align the getter
roughly with upstream's SSL_SESSION_get0_id_context (which we don't
currently expose).
BUG=6
Change-Id: Iab240868838ba56c1f08d112888d9536574347b4
Reviewed-on: https://boringssl-review.googlesource.com/12636
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TLS 1.3 forbids warning alerts, and sending these is a bad idea. Per RFC
6066:
If the server understood the ClientHello extension but
does not recognize the server name, the server SHOULD take one of two
actions: either abort the handshake by sending a fatal-level
unrecognized_name(112) alert or continue the handshake. It is NOT
RECOMMENDED to send a warning-level unrecognized_name(112) alert,
because the client's behavior in response to warning-level alerts is
unpredictable.
The motivation is to cut down on the number of places where we send
non-closing alerts. We can't remove them yet (SSL 3.0 and TLS 1.3 draft
18 need to go), but eventually this can be a simplifying assumption.
Already this means DTLS never sends warning alerts, which is good
because DTLS can't retransmit them.
Change-Id: I577a1eb9c23e66d28235c0fbe913f00965e19486
Reviewed-on: https://boringssl-review.googlesource.com/13221
Reviewed-by: Adam Langley <agl@google.com>
Change-Id: Ia6598ee4b2d4623abfc140d6a5c0eca4bcb30427
Reviewed-on: https://boringssl-review.googlesource.com/13180
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These are no longer needed.
Change-Id: I909f7d690f57dafcdad6254948b5683757da69f4
Reviewed-on: https://boringssl-review.googlesource.com/13160
Commit-Queue: David Benjamin <davidben@google.com>
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The last one was an RC4 cipher and those are gone.
Change-Id: I3473937ff6f0634296fc75a346627513c5970ddb
Reviewed-on: https://boringssl-review.googlesource.com/13108
Reviewed-by: Adam Langley <agl@google.com>
TLS 1.3 doesn't support renegotiation in the first place, but so callers
don't report TLS 1.3 servers as missing it, always report it as
(vacuously) protected against this bug.
BUG=chromium:680281
Change-Id: Ibfec03102b2aec7eaa773c331d6844292e7bb685
Reviewed-on: https://boringssl-review.googlesource.com/13046
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This adds support for setting 0-RTT mode on tickets minted by
BoringSSL, allowing for testing of the initial handshake knowledge.
BUG=76
Change-Id: Ic199842c03b5401ef122a537fdb7ed9e9a5c635a
Reviewed-on: https://boringssl-review.googlesource.com/12740
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This extension will be used to test whether
https://github.com/tlswg/tls13-spec/pull/762 is deployable against
middleboxes. For simplicity, it is mutually exclusive with 0-RTT. If
client and server agree on the extension, TLS 1.3 records will use the
format in the PR rather than what is in draft 18.
BUG=119
Change-Id: I1372ddf7b328ddf73d496df54ac03a95ede961e1
Reviewed-on: https://boringssl-review.googlesource.com/12684
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There are no longer any consumers of these APIs.
These were useful back when the CBC vs. RC4 tradeoff varied by version
and it was worth carefully tuning this cutoff. Nowadays RC4 is
completely gone and there's no use in configuring these anymore.
To avoid invalidating the existing ssl_ctx_api corpus and requiring it
regenerated, I've left the entries in there. It's probably reasonable
for new API fuzzers to reuse those slots.
Change-Id: I02bf950e3828062341e4e45c8871a44597ae93d5
Reviewed-on: https://boringssl-review.googlesource.com/12880
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This function always returns the full chain and will hopefully eliminate
the need for some code in Conscrypt.
Change-Id: Ib662005322c40824edf09d100a784ff00492896a
Reviewed-on: https://boringssl-review.googlesource.com/12780
Reviewed-by: Adam Langley <agl@google.com>
So we can report it cleanly out of DevTools, it should behave like
SSL_get_curve_id and be reported on resumption too.
BUG=chromium:658905
Change-Id: I0402e540a1e722e09eaebadf7fb4785d8880c389
Reviewed-on: https://boringssl-review.googlesource.com/12694
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The only accessor for this field is the group/curve ID. Switch to only
storing that so no cipher checks are needed to interpret it. Instead,
ignore older values at parse time.
Change-Id: Id0946d4ac9e7482c69e64cc368a9d0cddf328bd3
Reviewed-on: https://boringssl-review.googlesource.com/12693
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Nothing calls this anymore. DHE is nearly gone. This unblocks us from
making key_exchange_info only apply to the curve.
Change-Id: I3099e7222a62441df6e01411767d48166a0729b1
Reviewed-on: https://boringssl-review.googlesource.com/12691
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This change removes the use of |X509_get_pubkey| from the TLS <= 1.2
code. That function is replaced with a shallow parse of the certificate
to extract the public key instead.
Change-Id: I8938c6c5a01b32038c6b6fa58eb065e5b44ca6d2
Reviewed-on: https://boringssl-review.googlesource.com/12707
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This currently only works for certificates parsed from the network, but
if making several connections that share certificates, some KB of memory
might be saved.
BUG=chromium:671420
Change-Id: I1c7a71d84e1976138641f71830aafff87f795f9d
Reviewed-on: https://boringssl-review.googlesource.com/12706
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This change adds a STACK_OF(CRYPTO_BUFFER) to an SSL_SESSION which
contains the raw form of the received certificates. The X509-based
members still exist, but their |enc| buffer will alias the
CRYPTO_BUFFERs.
(This is a second attempt at
https://boringssl-review.googlesource.com/#/c/12163/.)
BUG=chromium:671420
Change-Id: I508a8a46cab89a5a3fcc0c1224185d63e3d59cb8
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OpenSSL includes a leaf certificate in a certificate chain when it's a
client, but doesn't when it's a server. This is also reflected in the
serialisation of sessions.
This change makes the internal semantics consistent: the leaf is always
included in the chain in memory, and never duplicated when serialised.
To maintain the same API, SSL_get_peer_cert_chain will construct a copy
of the chain without the leaf if needed.
Since the serialised format of a client session has changed, an
|is_server| boolean is added to the ASN.1 that defaults to true. Thus
any old client sessions will be parsed as server sessions and (silently)
discarded by a client.
Change-Id: Ibcf72bc8a130cedb423bc0fd3417868e0af3ca3e
Reviewed-on: https://boringssl-review.googlesource.com/12704
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state is now initialized to SSL_ST_INIT in SSL_HANDSHAKE. If there is no
handshake present, we report SSL_ST_OK. This saves 8 bytes of
per-connection post-handshake memory.
Change-Id: Idb3f7031045caed005bd7712bc8c4b42c81a1d04
Reviewed-on: https://boringssl-review.googlesource.com/12697
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This avoids needing a extra state around client certificates to avoid
calling the callbacks twice. This does, however, come with a behavior
change: configuring both callbacks won't work. No consumer does this.
(Except bssl_shim which needed slight tweaks.)
Change-Id: Ia5426ed2620e40eecdcf352216c4a46764e31a9a
Reviewed-on: https://boringssl-review.googlesource.com/12690
Reviewed-by: Adam Langley <agl@google.com>
This is never used. Removing it allows us to implement the old callback
using the new one.
Change-Id: I4be70cc16e609ce79b51836c19fec565c67ff3d6
Reviewed-on: https://boringssl-review.googlesource.com/12689
Commit-Queue: David Benjamin <davidben@google.com>
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Callers doing more interesting things than read and write tend to use
SSL_get_error. SSL_want_{read,write} are still used, however.
Change-Id: I21e83cc8046742857051f755868d86deffd23d81
Reviewed-on: https://boringssl-review.googlesource.com/12688
Commit-Queue: David Benjamin <davidben@google.com>
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This reverts commits 5a6e616961 and
e8509090cf. I'm going to unify how the
chains are kept in memory between client and server first otherwise the
mess just keeps growing.
Change-Id: I76df0d94c9053b2454821d22a3c97951b6419831
Reviewed-on: https://boringssl-review.googlesource.com/12701
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Change-Id: Ie947ab176d10feb709c6e135d5241c6cf605b8e8
Reviewed-on: https://boringssl-review.googlesource.com/12700
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This currently only works for certificates parsed from the network, but
if making several connections that share certificates, some KB of memory
might be saved.
Change-Id: I0ea4589d7a8b5c41df225ad7f282b6d1376a8db4
Reviewed-on: https://boringssl-review.googlesource.com/12164
Reviewed-by: Adam Langley <alangley@gmail.com>
This change adds a STACK_OF(CRYPTO_BUFFER) to an SSL_SESSION which
contains the raw form of the received certificates. The X509-based
members still exist, but their |enc| buffer will alias the
CRYPTO_BUFFERs.
The serialisation format of SSL_SESSIONs is also changed, in a backwards
compatible way. Previously, some sessions would duplicate the leaf
certificate in the certificate chain. These sessions can still be read,
but will be written in a way incompatible with older versions of the
code. This should be fine because the situation where multiple versions
exchange serialised sessions is at the server, and the server doesn't
duplicate the leaf certifiate in the chain anyway.
Change-Id: Id3b75d24f1745795315cb7f8089a4ee4263fa938
Reviewed-on: https://boringssl-review.googlesource.com/12163
Reviewed-by: Adam Langley <alangley@gmail.com>
A recent change to curl[1] added support for HTTPS proxies, which
involves running a TLS connection inside another TLS connection. This
was done by using SSL BIOs, which we removed from BoringSSL for being
crazy.
This change adds a stripped-down version of the SSL BIO to decrepit in
order to suport curl.
[1] cb4e2be7c6
Change-Id: I9cb8f2db5b28a5a70724f6f93544297c380ac124
Reviewed-on: https://boringssl-review.googlesource.com/12631
Reviewed-by: Adam Langley <agl@google.com>
Right now the only way to set an OCSP response is SSL_CTX_set_ocsp_response
however this assumes that all the SSLs generated from a SSL_CTX share the
same OCSP response, which is wrong.
This is similar to the OpenSSL "function" SSL_get_tlsext_status_ocsp_resp,
the main difference being that this doesn't take ownership of the OCSP buffer.
In order to avoid memory duplication in case SSL_CTX has its own response,
a CRYPTO_BUFFER is used for both SSL_CTX and SSL.
Change-Id: I3a0697f82b805ac42a22be9b6bb596aa0b530025
Reviewed-on: https://boringssl-review.googlesource.com/12660
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All callers were long since updated.
Change-Id: Ibdc9b186076dfbcbc3bd7dcc72610c8d5a522cfc
Reviewed-on: https://boringssl-review.googlesource.com/12624
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size_t at the public API, uint8_t on the SSL structs since everything
fits in there comfortably.
Change-Id: I837c3b21e04e03dfb957c1a3e6770300d0b49c0b
Reviewed-on: https://boringssl-review.googlesource.com/12638
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There is no need to retain it beyond this point.
Change-Id: Ib5722ab30fc013380198b1582d1240f0fe0aa770
Reviewed-on: https://boringssl-review.googlesource.com/12620
Reviewed-by: Adam Langley <agl@google.com>
This was useful when we were transitioning NPN off in Chromium, but now
there are no callers remaining.
Change-Id: Ic619613d6d475eea6bc258c4a90148f129ea4a81
Reviewed-on: https://boringssl-review.googlesource.com/12637
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This allows a consumer to disable Channel ID (for instance, it may be
enabled on the SSL_CTX and later disabled on the SSL) without reaching
into the SSL struct directly.
Deprecate the old APIs in favor of these.
BUG=6
Change-Id: I193bf94bc1f537e1a81602a39fc2b9a73f44c73b
Reviewed-on: https://boringssl-review.googlesource.com/12623
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This is an API which we added, so only first-party code could be
conditioning on it.
Change-Id: I08217fcae47585b22142df05622e31b6dfb6e4d6
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It's our ClientHello representation. May as well name it accordingly.
Also switch away from calling the variable name ctx as that conflicts
with SSL_CTX.
Change-Id: Iec0e597af37137270339e9754c6e08116198899e
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We currently look up SSL_HANDSHAKE off of ssl->s3->hs everywhere, but
this is a little dangerous. Unlike ssl->s3->tmp, ssl->s3->hs may not be
present. Right now we just know not to call some functions outside the
handshake.
Instead, code which expects to only be called during a handshake should
take an explicit SSL_HANDSHAKE * parameter and can assume it non-NULL.
This replaces the SSL * parameter. Instead, that is looked up from
hs->ssl.
Code which is called in both cases, reads from ssl->s3->hs. Ultimately,
we should get to the point that all direct access of ssl->s3->hs needs
to be NULL-checked.
As a start, manage the lifetime of the ssl->s3->hs in SSL_do_handshake.
This allows the top-level handshake_func hooks to be passed in the
SSL_HANDSHAKE *. Later work will route it through the stack. False Start
is a little wonky, but I think this is cleaner overall.
Change-Id: I26dfeb95f1bc5a0a630b5c442c90c26a6b9e2efe
Reviewed-on: https://boringssl-review.googlesource.com/12236
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Although we ignore all but the first identity, keep clients honest by
parsing the whole thing. Also explicitly check that the binder and
identity counts match.
Change-Id: Ib9c4caae18398360f3b80f8db1b22d4549bd5746
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Due to recent changes, changing the SSL session timeout from cert_cb is
not possible anymore since the new |SSL_SESSION| is initialized *after*
cert_cb is run. The alternative would be using |SSL_CTX_set_timeout| but
the specific |SSL_CTX| could be shared by multiple |SSL|s.
Setting a value on a per-connection basis is useful in case timeouts
need to be calculated dynamically based on specific certificate/domain
information that would be retrieved from inside cert_cb (or other
callbacks).
It would also be possible to set the value to 0 to prevent session
resumption, which is not otherwise doable in the handshake callbacks.
Change-Id: I730a528c647f83f7f77f59b5b21d7e060e4c9843
Reviewed-on: https://boringssl-review.googlesource.com/12440
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
BUG=101
Change-Id: Ia1edbccee535b0bc3a0e18465286d5bcca240035
Reviewed-on: https://boringssl-review.googlesource.com/12470
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
This change causes SSL_CTX_set_signed_cert_timestamp_list to check the
SCT list for shallow validity before allowing it to be set.
Change-Id: Ib8a1fe185224ff02ed4ce53a0109e60d934e96b3
Reviewed-on: https://boringssl-review.googlesource.com/12401
Commit-Queue: Adam Langley <agl@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
Reviewed-by: David Benjamin <davidben@google.com>
Previously the option to retain only the SHA-256 hash of client
certificates could only be set at the |SSL_CTX| level. This change makes
|SSL| objects inherit the setting from the |SSL_CTX|, but allows it to
be overridden on a per-|SSL| basis.
Change-Id: Id435934af3d425d5f008d2f3b9751d1d0884ee55
Reviewed-on: https://boringssl-review.googlesource.com/12182
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
