Commit Graph

948 Commits

Author SHA1 Message Date
Adam Langley
10a1a9d32e Update references to the padding draft.
The padding draft is now RFC 7685:
https://www.rfc-editor.org/rfc/rfc7685.txt

Change-Id: I26945b10e7923e75c016232c663baac11c4389ae
2015-10-21 14:49:23 -07:00
David Benjamin
c2ae53db6d Document alert handling.
SSL_alert_desc_string_long was kept in the undeprecated bucket and one missing
alert was added. We have some uses and it's not completely ridiculous for
logging purposes.

The two-character one is ridiculous though and gets turned into a stub
that returns a constant string ("!" or "!!") because M2Crypto expects
it.

Change-Id: Iaf8794b5d953630216278536236c7113655180af
Reviewed-on: https://boringssl-review.googlesource.com/6297
Reviewed-by: Adam Langley <alangley@gmail.com>
2015-10-20 19:03:24 +00:00
David Benjamin
b86847c24b Clean up ssl_stat.c slightly.
(Documentation/deprecation will come in later commits.)

Change-Id: I3aba26e32b2e47a1afb5cedd44d09115fc193bce
Reviewed-on: https://boringssl-review.googlesource.com/6296
Reviewed-by: Adam Langley <alangley@gmail.com>
2015-10-20 18:49:51 +00:00
David Benjamin
1a1b34d759 Deprecate SSL_get_(peer_)finished.
The only reason you'd want it is to tls_unique, and we have a better API
for that. (It has one caller and that is indeed what that caller uses it
for.)

Change-Id: I39f8e353f56f18becb63dd6f7205ad31f4192bfd
Reviewed-on: https://boringssl-review.googlesource.com/6295
Reviewed-by: Adam Langley <alangley@gmail.com>
2015-10-20 18:48:41 +00:00
David Benjamin
93d17499e9 Deprecate SSL_want*.
This is redundant with SSL_get_error. Neither is very good API, but
SSL_get_error is more common. SSL_get_error also takes a return code
which makes it harder to accidentally call it at some a point other than
immediately after an operation. (Any other point is confusing since you
can have SSL_read and SSL_write operations going on in parallel and
they'll get mixed up.)

Change-Id: I5818527c30daac28edb552c6c550c05c8580292d
Reviewed-on: https://boringssl-review.googlesource.com/6294
Reviewed-by: Adam Langley <alangley@gmail.com>
2015-10-20 18:42:15 +00:00
David Benjamin
7f393f72a5 Unexport SSL_SESSION_ASN1_VERSION.
It's pretty clearly pointless to put in the public header.

Change-Id: I9527aba09b618f957618e653c4f2ae379ddd0fdb
Reviewed-on: https://boringssl-review.googlesource.com/6293
Reviewed-by: Adam Langley <alangley@gmail.com>
2015-10-20 18:41:08 +00:00
David Benjamin
79a0589dc4 Ditch remaining filename comments from public headers and ssl/
Change-Id: I8fc795d18aacb0c929b82e7d58514b22103e2106
Reviewed-on: https://boringssl-review.googlesource.com/6292
Reviewed-by: Adam Langley <alangley@gmail.com>
2015-10-20 18:40:05 +00:00
David Benjamin
d4c2bceaab Document early callback functions.
Also added a SSL_CTX_set_select_certificate_cb setter for
select_certificate_cb so code needn't access SSL_CTX directly. Plus it
serves as a convenient anchor for the documentation.

Change-Id: I23755b910e1d77d4bea7bb9103961181dd3c5efe
Reviewed-on: https://boringssl-review.googlesource.com/6291
Reviewed-by: Adam Langley <alangley@gmail.com>
2015-10-20 18:29:33 +00:00
David Benjamin
cfdee213f8 Add use counters for SSL_OP_TLS_D5_BUG and SSL_OP_MICROSOFT_BIG_SSLV3_BUFFER.
These are theh two remaining quirks (SSL_OP_LEGACY_SERVER_CONNECT
aside). Add counters so we can determine whether there are still clients
that trip up these cases.

Change-Id: I7e92f42f3830c1df675445ec15a852e5659eb499
Reviewed-on: https://boringssl-review.googlesource.com/6290
Reviewed-by: Adam Langley <alangley@gmail.com>
2015-10-20 18:22:47 +00:00
David Benjamin
96e97b1bf1 Convert ssl3_send_channel_id to CBB.
In doing so, simplify the mess around serializing the public key.
Channel ID specifies that you write x and y concatenated. Rather than
using the X9.62 serialization and chopping bits off, get the affine
coordinates and write them out in the same way we write r and s.

Also unify the P-256 sanity check around SSL_set1_tls_channel_id and
actually check the curve NID.

BUG=468889

Change-Id: I228877b736c9722e368d315064ce3ae6893adfc0
Reviewed-on: https://boringssl-review.googlesource.com/6201
Reviewed-by: Adam Langley <alangley@gmail.com>
2015-10-20 18:16:46 +00:00
David Benjamin
e97b96224c Convert ssl3_send_next_proto to CBB.
BUG=468889

Change-Id: I841b2816ba47c8c1129e333012272902a52cafd3
Reviewed-on: https://boringssl-review.googlesource.com/6200
Reviewed-by: Adam Langley <alangley@gmail.com>
2015-10-20 18:08:28 +00:00
David Benjamin
5638046cd7 Convert ssl3_send_server_hello to CBB.
BUG=468889

Change-Id: I899d67addbff01c64175f47b19ca2b688626405b
Reviewed-on: https://boringssl-review.googlesource.com/6191
Reviewed-by: Adam Langley <alangley@gmail.com>
2015-10-20 18:04:48 +00:00
David Benjamin
e8d53508ca Convert ssl3_send_client_hello to CBB.
Start converting the ones we can right now. Some of the messier ones
resize init_buf rather than assume the initial size is sufficient, so
those will probably wait until init_buf is gone and the handshake's
undergone some more invasive surgery. The async ones will also require
some thought. But some can be incrementally converted now.

BUG=468889

Change-Id: I0bc22e4dca37d9d671a488c42eba864c51933638
Reviewed-on: https://boringssl-review.googlesource.com/6190
Reviewed-by: Adam Langley <alangley@gmail.com>
2015-10-20 17:56:19 +00:00
David Benjamin
c617413527 Remove SSL_SESSION_print*.
It's missing fields and no one ever calls it.

Change-Id: I450edc1e29bb48edffb5fd3df8da19a03e4185ce
Reviewed-on: https://boringssl-review.googlesource.com/5821
Reviewed-by: Adam Langley <agl@google.com>
2015-10-13 19:24:14 +00:00
David Benjamin
fd8e69f26d Better document the callbacks around client certificates.
Deprecate the client_cert_cb variant since you can't really configure
intermediates with it. (You might be able to by configuring the
intermediates without the leaf or key and leaving the SSL stack to
configure those, but that's really weird. cert_cb is simpler.)

Also document the two functions the callbacks may use to query the
CertificateRequest on the client.

Change-Id: Iad6076266fd798cd74ea4e09978e7f5df5c8a670
Reviewed-on: https://boringssl-review.googlesource.com/6092
Reviewed-by: Adam Langley <agl@google.com>
2015-10-13 18:18:40 +00:00
David Benjamin
9f85949baf Document a few more miscellaneous things.
Change-Id: Ib4829bf9344341e3d4fe90c7cea66e217366fe97
Reviewed-on: https://boringssl-review.googlesource.com/6091
Reviewed-by: Adam Langley <agl@google.com>
2015-10-13 18:18:19 +00:00
David Benjamin
1d5ef3bb1e Add SSL_set_renegotiate_mode.
Add a slightly richer API. Notably, one can configure ssl_renegotiate_once to
only accept the first renego.

Also, this API doesn't repeat the mistake I made with
SSL_set_reject_peer_renegotiations which is super-confusing with the negation.

Change-Id: I7eb5d534e3e6c553b641793f4677fe5a56451c71
Reviewed-on: https://boringssl-review.googlesource.com/6221
Reviewed-by: Adam Langley <agl@google.com>
2015-10-13 18:02:28 +00:00
David Benjamin
324dce4fd7 Unbreak SSL_total_renegotiations.
The logic to update that got removed in
https://boringssl-review.googlesource.com/4825. Add tests.

Change-Id: Idc550e8fa3ce6f69a76fa65d7651adde281edba6
Reviewed-on: https://boringssl-review.googlesource.com/6220
Reviewed-by: Matt Braithwaite <mab@google.com>
Reviewed-by: Adam Langley <alangley@gmail.com>
Reviewed-by: Adam Langley <agl@google.com>
2015-10-13 17:53:30 +00:00
David Benjamin
617eac6a21 Align BIO_get_fd with upstream.
OpenSSL's BIO_get_fd returns the fd or -1, not a boolean.

Change-Id: I12a3429c71bb9c9064f9f91329a88923025f1fb5
Reviewed-on: https://boringssl-review.googlesource.com/6080
Reviewed-by: Adam Langley <agl@google.com>
2015-10-12 22:18:17 +00:00
David Benjamin
c7ce977fb9 Ignore all extensions but renegotiation_info in SSL 3.0.
SSL 3.0 used to have a nice and simple rule around extensions. They don't
exist. And then RFC 5746 came along and made this all extremely confusing.

In an SSL 3.0 server, rather than blocking ServerHello extension
emission when renegotiation_info is missing, ignore all ClientHello
extensions but renegotiation_info. This avoids a mismatch between local
state and the extensions with emit.

Notably if, for some reason, a ClientHello includes the session_ticket
extension, does NOT include renegotiation_info or the SCSV, and yet the
client or server are decrepit enough to negotiate SSL 3.0, the
connection will fail due to unexpected NewSessionTicket message.

See https://crbug.com/425979#c9 for a discussion of something similar
that came up in diagnosing https://poodle.io/'s buggy POODLE check.
This is analogous to upstream's
5a3d8eebb7667b32af0ccc3f12f314df6809d32d.

(Not supporting renego as a server in any form anyway, we may as well
completely ignore extensions, but then our extensions callbacks can't
assume the parse hooks are always called. This way the various NULL
handlers still function.)

Change-Id: Ie689a0e9ffb0369ef7a20ab4231005e87f32d5f8
Reviewed-on: https://boringssl-review.googlesource.com/6180
Reviewed-by: Adam Langley <agl@google.com>
2015-10-11 20:47:19 +00:00
David Benjamin
20c0e90d11 Allow NULL inputs in SSL_SESSION_get_time.
Some code relies on OpenSSL's behavior where it allowed for NULL. But this time
add a comment so people don't think this is the convention for new functions.

BUG=538292

Change-Id: I66566e0e24566fafe17e05369276248be3b05591
Reviewed-on: https://boringssl-review.googlesource.com/6070
Reviewed-by: Adam Langley <agl@google.com>
2015-10-01 20:16:49 +00:00
Adam Langley
f4e554e438 Bitwise-or, not logical-or, when hashing.
This didn't actually break anything, but it does make session lookup
quite slow.

Change-Id: I13615e8ccf6a46683a21774eb7c073318ae8c28c
Reviewed-on: https://boringssl-review.googlesource.com/6054
Reviewed-by: Matt Braithwaite <mab@google.com>
Reviewed-by: Adam Langley <agl@google.com>
2015-09-30 20:50:18 +00:00
Adam Langley
dc7e9c4043 Make the runner tests a go “test”
This change makes the runner tests (in ssl/test/runner) act like a
normal Go test rather than being a Go binary. This better aligns with
some internal tools.

Thus, from this point onwards, one has to run the runner tests with `go
test` rather than `go run` or `go build && ./runner`.

This will break the bots.

Change-Id: Idd72c31e8e0c2b7ed9939dacd3b801dbd31710dd
Reviewed-on: https://boringssl-review.googlesource.com/6009
Reviewed-by: Matt Braithwaite <mab@google.com>
Reviewed-by: David Benjamin <davidben@chromium.org>
Reviewed-by: Adam Langley <agl@google.com>
2015-09-30 17:10:45 +00:00
Matt Braithwaite
4d11aff33a Don't record handshake hashes if no Channel ID
Change-Id: Ic0dcde436024e8d11f9b5986998cf6e808ff036b
Reviewed-on: https://boringssl-review.googlesource.com/6007
Reviewed-by: Adam Langley <agl@google.com>
2015-09-29 21:47:05 +00:00
David Benjamin
32876b3dbb Document cipher suite configuration.
The cipher suite rules could also be anchored on SSL_TXT_* if desired. I
currently documented them in prose largely because SSL_TXT_* also
defines protocol version strings and those are weird; SSL_TXT_TLSV1_1
isn't even a cipher rule. (And, in fact, those are the only SSL_TXT_*
macros that we can't blindly remove. I found some code that #ifdef's the
version SSL_TXT_* macros to decide if version-locked SSL_METHODs are
available.)

Also they clutter the header. I was thinking maybe we should dump a lot
of the random constants into a separate undocumented header or perhaps
just unexport them.

I'm slightly torn on this though and could easily be convinced in the
other direction. (Playing devil's advocate, anchoring on SSL_TXT_* means
we're less likely to forget to document one so long as adding a
SSL_TXT_* macro is the convention.)

Change-Id: Ide2ae44db9d6d8f29c24943090c210da0108dc37
Reviewed-on: https://boringssl-review.googlesource.com/5962
Reviewed-by: Adam Langley <agl@google.com>
2015-09-28 22:36:22 +00:00
Eric Roman
8c9b8783e2 Change some "int" variables to "size_t" in ssl3_handshake_mac().
BUG=https://crbug.com/535039

Change-Id: I94d35ae5acee510b1e6874c37f35eddda9906e71
Reviewed-on: https://boringssl-review.googlesource.com/5974
Reviewed-by: David Benjamin <davidben@chromium.org>
Reviewed-by: Adam Langley <agl@google.com>
2015-09-24 00:04:59 +00:00
Adam Langley
d98dc1311e Upstream Android-specific things under |BORINGSSL_ANDROID_SYSTEM|
The Android system BoringSSL has a couple of changes:
  ∙ ChaCha20-Poly1305 is disabled because it's not an offical
    cipher suite.
  ∙ P-521 is offered in the ClientHello.

These changes were carried in the Android BoringSSL repo directly. This
change upstreams them when BORINGSSL_ANDROID_SYSTEM is defined.

Change-Id: If3e787c6694655b56e7701118aca661e97a5f26c
2015-09-23 16:41:33 -07:00
David Benjamin
59937045ec Document certificate verification functions in SSL.
Or at least group them together and make a passing attempt to document
them. The legacy X.509 stack itself remains largely untouched and most
of the parameters have to do with it.

Change-Id: I9e11e2ad1bbeef53478c787344398c0d8d1b3876
Reviewed-on: https://boringssl-review.googlesource.com/5942
Reviewed-by: Adam Langley <agl@google.com>
2015-09-23 23:31:18 +00:00
David Benjamin
df0905a803 Don't pretend to account for RSA_PSK.
RSA_PSK is really weird in that it takes a Certificate, but you're not
expected to verify it. It's just a funny way to transmit an RSA key.
(They probably should have used the RSA_EXPORT ServerKeyExchange
spelling.) Some code now already doesn't account for it right around
certificate verification.

Given ECDHE_PSK exists, hopefully there will never be any need to add
this.

Change-Id: Ia64dac28099eaa9021f8d915d45ccbfd62872317
Reviewed-on: https://boringssl-review.googlesource.com/5941
Reviewed-by: Adam Langley <agl@google.com>
2015-09-23 23:18:44 +00:00
David Benjamin
42fea37227 Document Channel ID functions and a few random extras.
Change-Id: I34a6352d265615ee08bb18fd537acf70a558f014
Reviewed-on: https://boringssl-review.googlesource.com/5940
Reviewed-by: Adam Langley <agl@google.com>
2015-09-23 23:08:59 +00:00
Adam Langley
67251f2da9 Use |strtok| rather than |strtok_r|.
As ever, Windows doesn't support the correct function.

Change-Id: If16c979e591abda01ce3bf591b9162c210f03932
2015-09-23 15:01:07 -07:00
Steven Valdez
0d62f26c36 Adding more options for signing digest fallback.
Allow configuring digest preferences for the private key. Some
smartcards have limited support for signing digests, notably Windows
CAPI keys and old Estonian smartcards. Chromium used the supports_digest
hook in SSL_PRIVATE_KEY_METHOD to limit such keys to SHA1. However,
detecting those keys was a heuristic, so some SHA256-capable keys
authenticating to SHA256-only servers regressed in the switch to
BoringSSL. Replace this mechanism with an API to configure digest
preference order. This way heuristically-detected SHA1-only keys may be
configured by Chromium as SHA1-preferring rather than SHA1-requiring.

In doing so, clean up the shared_sigalgs machinery somewhat.

BUG=468076

Change-Id: I996a2df213ae4d8b4062f0ab85b15262ca26f3c6
Reviewed-on: https://boringssl-review.googlesource.com/5755
Reviewed-by: Adam Langley <agl@google.com>
2015-09-23 21:55:01 +00:00
Adam Langley
d7fe75ca5f Add |SSL_CIPHER_is_RC4|.
We wish to be able to detect the use of RC4 so that we can flag it and
investigate before it's disabled.

Change-Id: I6dc3a5d2211b281097531a43fadf08edb5a09646
Reviewed-on: https://boringssl-review.googlesource.com/5930
Reviewed-by: David Benjamin <davidben@chromium.org>
Reviewed-by: Adam Langley <agl@google.com>
2015-09-18 23:03:40 +00:00
David Benjamin
306ece31bc Fix some malloc failure crashes.
EVP_MD_CTX_copy_ex was implemented with a memcpy, which doesn't work well when
some of the pointers need to be copied, and ssl_verify_cert_chain didn't
account for set_ex_data failing.

Change-Id: Ieb556aeda6ab2e4c810f27012fefb1e65f860023
Reviewed-on: https://boringssl-review.googlesource.com/5911
Reviewed-by: Adam Langley <agl@google.com>
2015-09-18 19:30:09 +00:00
David Benjamin
977547b6f9 Group NPN functions in their own section.
Existing documentation was moved to the header, very slightly tweaked.

Change-Id: Ife3c2351e2d7e6a335854284f996918039414446
Reviewed-on: https://boringssl-review.googlesource.com/5897
Reviewed-by: Adam Langley <agl@google.com>
2015-09-18 18:39:53 +00:00
David Benjamin
8984f1f6e5 Group ALPN functions into their own section.
These were already documented, though some of the documentation was
expanded on slightly.

Change-Id: I04c6276a83a64a03ab9cce9b9c94d4dea9ddf638
Reviewed-on: https://boringssl-review.googlesource.com/5896
Reviewed-by: Adam Langley <agl@google.com>
2015-09-17 22:19:58 +00:00
Matt Braithwaite
cd6f54b193 Add method to query Extended Master Secret support
Change-Id: I4c285f4b3dd77f8fc7249c7504b5e4eb9b62959f
Reviewed-on: https://boringssl-review.googlesource.com/5920
Reviewed-by: Adam Langley <agl@google.com>
2015-09-17 21:18:28 +00:00
Paul Lietar
62be8ac8da Skip the SCT and OCSP extensions in ServerHello when resuming sessions.
SCT and OCSP are part of the session data and as such shouldn't be sent
again to the client when resuming.

Change-Id: Iaee3a3c4c167ea34b91504929e38aadee37da572
Reviewed-on: https://boringssl-review.googlesource.com/5900
Reviewed-by: David Benjamin <davidben@chromium.org>
Reviewed-by: Adam Langley <agl@google.com>
2015-09-17 21:15:00 +00:00
David Benjamin
e8814df699 Document PSK functions in ssl.h.
Change-Id: Iac58d28570d429236de1d2bc40b631e252b8e710
Reviewed-on: https://boringssl-review.googlesource.com/5893
Reviewed-by: Adam Langley <agl@google.com>
2015-09-15 23:34:12 +00:00
David Benjamin
9e4e01ee14 Align the SSL stack on #include style.
ssl.h should be first. Also two lines after includes and the rest of the
file.

Change-Id: Icb7586e00a3e64170082c96cf3f8bfbb2b7e1611
Reviewed-on: https://boringssl-review.googlesource.com/5892
Reviewed-by: Adam Langley <agl@google.com>
2015-09-15 23:32:07 +00:00
David Benjamin
1ac08feed6 Fix SSL and SSL_CTX ex_data variable names.
Forgot to fix these when I fixed the headers.

Change-Id: Ie45e624abc993e16e2d5a872ef00dba9029a38df
Reviewed-on: https://boringssl-review.googlesource.com/5891
Reviewed-by: Adam Langley <agl@google.com>
2015-09-15 23:22:07 +00:00
David Benjamin
cfd65b60a6 Fold srtp.h into ssl.h.
This gets the documentation into the ssl.h documentation, and removes
one of the circularly-dependent headers hanging off ssl.h. Also fixes
some typos; there were a few instances of "SSL *ctx".

Change-Id: I2a41c6f518f4780af84d468ed220fe7b0b8eb0d3
Reviewed-on: https://boringssl-review.googlesource.com/5883
Reviewed-by: Adam Langley <agl@google.com>
2015-09-14 23:59:37 +00:00
David Benjamin
dafbdd49c7 Document session cache functions.
Also switch to the new variable names (SSL_CTX *ctx, SSL *ssl,
SSL_SESSION *session) for all documented functions.

Change-Id: I15e15a703b96af1727601108223c7ce3b0691f1d
Reviewed-on: https://boringssl-review.googlesource.com/5882
Reviewed-by: Adam Langley <agl@google.com>
2015-09-14 23:58:48 +00:00
David Benjamin
14e2b5070b const-correct a few SSL_SESSION functions.
Change-Id: I64d1e29d1e414add4ae522fd9603c550d426a557
Reviewed-on: https://boringssl-review.googlesource.com/5881
Reviewed-by: Adam Langley <agl@google.com>
2015-09-14 23:41:36 +00:00
David Benjamin
abb6c1c191 Reorder ssl_session.c slightly to match the header.
Change-Id: I43138057689a479ff7aba1543118af4b52bb821b
Reviewed-on: https://boringssl-review.googlesource.com/5880
Reviewed-by: Adam Langley <agl@google.com>
2015-09-14 23:40:55 +00:00
David Benjamin
190ab7f179 Move ex_data functions in ssl.h to a section.
Change-Id: Ie3b7c1956cc9d62091f649d0e621d84fce1d26ec
Reviewed-on: https://boringssl-review.googlesource.com/5879
Reviewed-by: Adam Langley <agl@google.com>
2015-09-14 23:40:34 +00:00
David Benjamin
8f3cc26812 Rename ssl_sess.c to ssl_session.c.
Change-Id: Ib730ffe49b30c79b3f30acae4070f6055081a0a3
Reviewed-on: https://boringssl-review.googlesource.com/5878
Reviewed-by: Adam Langley <agl@google.com>
2015-09-14 23:37:52 +00:00
David Benjamin
a6b8cdfbe9 Document functions acting on an SSL_SESSION.
Change-Id: I0b4386d1972af0ac10db397716de8161810a87f4
Reviewed-on: https://boringssl-review.googlesource.com/5877
Reviewed-by: Adam Langley <agl@google.com>
2015-09-14 23:37:42 +00:00
David Benjamin
ee0c82789a Move SSL_get_peer_* to Connection information.
This is arguably more commonly queried connection information than the
tls-unique.

Change-Id: I1f080536153ba9f178af8e92cb43b03df37110b5
Reviewed-on: https://boringssl-review.googlesource.com/5874
Reviewed-by: Adam Langley <agl@google.com>
2015-09-14 23:30:54 +00:00
David Benjamin
27bbae4682 Reorder functions in ssl_lib.c to match ssl.h.
Just the stuff that has been pulled out into sections already.

Change-Id: I3da6bc61d79ccfe2b18d888075dc32026a656464
Reviewed-on: https://boringssl-review.googlesource.com/5873
Reviewed-by: Adam Langley <agl@google.com>
2015-09-14 23:30:23 +00:00