This aligns us better with upstream's version of this file.
Change-Id: I771b6a6c57f2e11e30c95c7a5499c39575b16253
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(Imports upstream's a3b5684fc1d4f3aabdf68dcf6c577f6dd24d2b2d.)
CFI directives annotate instructions that are significant for stack
unwinding procedure. In addition to directives recognized by GNU
assembler this module implements three synthetic ones:
- .cfi_push annotates push instructions in prologue and translates to
.cfi_adjust_cfa_offset (if needed) and .cfi_offset;
- .cfi_pop annotates pop instructions in epilogue and translates to
.cfi_adjust_cfs_offset (if needed) and .cfi_restore;
- .cfi_cfa_expression encodes DW_CFA_def_cfa_expression and passes it
to .cfi_escape as byte vector;
CFA expression syntax is made up mix of DWARF operator suffixes [subset
of] and references to registers with optional bias. Following example
describes offloaded original stack pointer at specific offset from
current stack pointer:
.cfi_cfa_expression %rsp+40,deref,+8
Final +8 has everything to do with the fact that CFA, Canonical Frame
Address, is reference to top of caller's stack, and on x86_64 call to
subroutine pushes 8-byte return address.
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All the business with rewinding hs->state back or skipping states based
on reuse_message or a skip parameter isn't really worth the trouble for
a debugging callback. With SSL_state no longer exposed, we don't have to
worry about breaking things.
BUG=177
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The split was there out of paranoia that some caller may notice the
change in initial state. Now that SSL_state is neutered, simplify.
BUG=177
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I doubt this matters, but this seems a little odd. In particular, this
avoids info_callback seeing the SSL_ST_OK once we stop switching
hs->state back and forth.
BUG=177
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Code which manages to constrain itself on this will limit our ability to
rework the handshake. I believe, at this point, we only need to expose
one bit of information (there's some code that compares SSL_state to
SSL_ST_OK), if even that.
BUG=177
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This makes sense to do if we are a client and initiate a renegotiation
at the same time as the server requesting one. Since we will never
initiate a renegotiation, this should not be necessary.
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Change-Id: I4b586dce37f4db0770e516888c2eeeae3ecffd97
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We compare pointer/length pairs constantly. To avoid needing to type it
everywhere and get GTest's output, add a StringPiece-alike for byte
slices which supports ==, !=, and std::ostream.
BUG=129
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(Imports upstream's 9d301cfea7181766b79ba31ed257d30fb84b1b0f.)
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(Imports upstream's e09b6216a5423555271509acf5112da5484ec15d.)
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(Imported from upstream's e1dbf7f431b996010844e220d3200cbf2122dbb3)
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(Imported from upstream's 526ab896459a58748af198f6703108b79c917f08.)
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|SSL_SESSION_from_bytes| now takes an |SSL_CTX*|, from which it uses the
|X509_METHOD| and buffer pool. This is our API so we can do this.
This also requires adding an |SSL_CTX*| argument to |SSL_SESSION_new|
for the same reason. However, |SSL_SESSION_new| already has very few
callers (and none in third-party code that I can see) so I think we can
get away with this.
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We sized the post-handshake message limit for the older zero-length
KeyUpdate and forgot to update it when it got larger.
Thanks to Matt Caswell for catching this.
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BUG=129
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Change-Id: I98903df561bbf8c5739f892d2ad5e89ac0eb8e6f
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In honor of CVE-2016-9244. Although that particular bug BoGo was already
testing since it uses 16 bytes here.
The empty session ID case is particularly worth testing to make sure we
don't get confused somewhere. RFC 5077 allows clients to offer tickets
with no session ID. This is absurd since the client then has no way of
detecting resumption except by lookahead. We'll never do this as a
client, but should handle it correctly as a server.
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These are meant to make Android libcore's usage of BIGNUMs for java
BigIntegers faster and nicer (specifically, so that it doesn't need
to malloc a bunch of temporary BIGNUMs).
BUG=97
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ssl_rsa.c now basically deals with private-key functions, so rename to
reflect that.
Change-Id: Ia87ed4c0f9b34af134844e2eeb270fc45ff3f23f
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I even made a note to update my change in light of this but still
managed to forget. With this, grep tells me that all |alert| values have
the correct default value now.
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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.)
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Before, attempting to build the code using Yasm as the assembler would
result in warnings like this:
warning : no non-local label before `.chacha20_consts'
Precede the local labels with a non-local label to suppress these
warnings.
It isn't clear why these labels are defined as local labels instead of
regular labels. Making them non-local may be a better idea.
For reference, Yasm's interpretation of local labels is described
succinctly at
https://www.tortall.net/projects/yasm/manual/html/nasm-local-label.html.
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Change-Id: If97da565155292d5f0de5c6a8b0fd8508398768a
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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
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Previously, the alert was uninitialised.
(Thanks to Robert Swiecki and honggfuzz.)
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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.
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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
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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
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GTest sends its output to stdout, not stderr. Merge them in the runner
(though eventually we'll teach the bots to run the GTest targets
directly) so we don't lose it.
BUG=129
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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.
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As previously discussed, it turns out we don't actually need this, so
there's no point in keeping it.
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(Imported from upstream's efe8398649a1d7fc9d84d2818592652e0632a8a8.)
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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.
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Change-Id: I878dfb9f5d3736c3ec0d5fa39052cca58932dbb7
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Change-Id: I38cd04fa40edde4e4dd31fdc16bbf92985430198
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The recent rewrite didn't account for the OID being missing but the NID
present.
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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>
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I believe these are now unused.
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Using the arg parameter does not work well. This is purely an
SSL_CTX-level callback, not an SSL-level one.
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With the CRYPTO_BUFFER stuff, this API is now slightly more complex. Add
some tests as a sanity-check.
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It is hard to control what flags consumers may try to build us with.
Account for someone adding _GNU_SOURCE to the build line.
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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.
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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
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