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-rw-r--r--lib/ssl/src/ssl.erl37
-rw-r--r--lib/ssl/src/ssl_certificate.erl100
-rw-r--r--lib/ssl/src/ssl_connection.erl4
-rw-r--r--lib/ssl/src/ssl_handshake.erl8
-rw-r--r--lib/ssl/src/ssl_internal.hrl1
5 files changed, 97 insertions, 53 deletions
diff --git a/lib/ssl/src/ssl.erl b/lib/ssl/src/ssl.erl
index d741fa63fb..b4bea25942 100644
--- a/lib/ssl/src/ssl.erl
+++ b/lib/ssl/src/ssl.erl
@@ -569,21 +569,24 @@ handle_options(Opts0, #ssl_options{protocol = Protocol, cacerts = CaCerts0,
cacertfile = CaCertFile0} = InheritedSslOpts) ->
RecordCB = record_cb(Protocol),
CaCerts = handle_option(cacerts, Opts0, CaCerts0),
- {Verify, FailIfNoPeerCert, CaCertDefault, VerifyFun} = handle_verify_options(Opts0, CaCerts),
+ {Verify, FailIfNoPeerCert, CaCertDefault, VerifyFun, PartialChainHanlder} = handle_verify_options(Opts0, CaCerts),
CaCertFile = case proplists:get_value(cacertfile, Opts0, CaCertFile0) of
undefined ->
CaCertDefault;
CAFile ->
CAFile
end,
+
NewVerifyOpts = InheritedSslOpts#ssl_options{cacerts = CaCerts,
cacertfile = CaCertFile,
verify = Verify,
verify_fun = VerifyFun,
+ partial_chain = PartialChainHanlder,
fail_if_no_peer_cert = FailIfNoPeerCert},
SslOpts1 = lists:foldl(fun(Key, PropList) ->
proplists:delete(Key, PropList)
- end, Opts0, [cacerts, cacertfile, verify, verify_fun, fail_if_no_peer_cert]),
+ end, Opts0, [cacerts, cacertfile, verify, verify_fun, partial_chain,
+ fail_if_no_peer_cert]),
case handle_option(versions, SslOpts1, []) of
[] ->
new_ssl_options(SslOpts1, NewVerifyOpts, RecordCB);
@@ -603,10 +606,10 @@ handle_options(Opts0) ->
ReuseSessionFun = fun(_, _, _, _) -> true end,
CaCerts = handle_option(cacerts, Opts, undefined),
- {Verify, FailIfNoPeerCert, CaCertDefault, VerifyFun} = handle_verify_options(Opts, CaCerts),
+ {Verify, FailIfNoPeerCert, CaCertDefault, VerifyFun, PartialChainHanlder} =
+ handle_verify_options(Opts, CaCerts),
CertFile = handle_option(certfile, Opts, <<>>),
-
RecordCb = record_cb(Opts),
Versions = case handle_option(versions, Opts, []) of
@@ -620,6 +623,7 @@ handle_options(Opts0) ->
versions = Versions,
verify = validate_option(verify, Verify),
verify_fun = VerifyFun,
+ partial_chain = PartialChainHanlder,
fail_if_no_peer_cert = FailIfNoPeerCert,
verify_client_once = handle_option(verify_client_once, Opts, false),
depth = handle_option(depth, Opts, 1),
@@ -656,7 +660,7 @@ handle_options(Opts0) ->
},
CbInfo = proplists:get_value(cb_info, Opts, {gen_tcp, tcp, tcp_closed, tcp_error}),
- SslOptions = [protocol, versions, verify, verify_fun,
+ SslOptions = [protocol, versions, verify, verify_fun, partial_chain,
fail_if_no_peer_cert, verify_client_once,
depth, cert, certfile, key, keyfile,
password, cacerts, cacertfile, dh, dhfile,
@@ -708,6 +712,8 @@ validate_option(verify_fun, Fun) when is_function(Fun) ->
end, Fun};
validate_option(verify_fun, {Fun, _} = Value) when is_function(Fun) ->
Value;
+validate_option(partial_chain, Value) when is_function(Value) ->
+ Value;
validate_option(fail_if_no_peer_cert, Value) when is_boolean(Value) ->
Value;
validate_option(verify_client_once, Value) when is_boolean(Value) ->
@@ -1147,25 +1153,32 @@ handle_verify_options(Opts, CaCerts) ->
UserFailIfNoPeerCert = handle_option(fail_if_no_peer_cert, Opts, false),
UserVerifyFun = handle_option(verify_fun, Opts, undefined),
-
+ PartialChainHanlder = handle_option(partial_chain, Opts,
+ fun(_) -> unknown_ca end),
+
%% Handle 0, 1, 2 for backwards compatibility
case proplists:get_value(verify, Opts, verify_none) of
0 ->
{verify_none, false,
- ca_cert_default(verify_none, VerifyNoneFun, CaCerts), VerifyNoneFun};
+ ca_cert_default(verify_none, VerifyNoneFun, CaCerts),
+ VerifyNoneFun, PartialChainHanlder};
1 ->
{verify_peer, false,
- ca_cert_default(verify_peer, UserVerifyFun, CaCerts), UserVerifyFun};
+ ca_cert_default(verify_peer, UserVerifyFun, CaCerts),
+ UserVerifyFun, PartialChainHanlder};
2 ->
{verify_peer, true,
- ca_cert_default(verify_peer, UserVerifyFun, CaCerts), UserVerifyFun};
- verify_none ->
+ ca_cert_default(verify_peer, UserVerifyFun, CaCerts),
+ UserVerifyFun, PartialChainHanlder};
+ verify_none ->
{verify_none, false,
- ca_cert_default(verify_none, VerifyNoneFun, CaCerts), VerifyNoneFun};
+ ca_cert_default(verify_none, VerifyNoneFun, CaCerts),
+ VerifyNoneFun, PartialChainHanlder};
verify_peer ->
{verify_peer, UserFailIfNoPeerCert,
- ca_cert_default(verify_peer, UserVerifyFun, CaCerts), UserVerifyFun};
+ ca_cert_default(verify_peer, UserVerifyFun, CaCerts),
+ UserVerifyFun, PartialChainHanlder};
Value ->
throw({error, {options, {verify, Value}}})
end.
diff --git a/lib/ssl/src/ssl_certificate.erl b/lib/ssl/src/ssl_certificate.erl
index 53366b060c..9c0ed181fe 100644
--- a/lib/ssl/src/ssl_certificate.erl
+++ b/lib/ssl/src/ssl_certificate.erl
@@ -30,7 +30,7 @@
-include("ssl_internal.hrl").
-include_lib("public_key/include/public_key.hrl").
--export([trusted_cert_and_path/3,
+-export([trusted_cert_and_path/4,
certificate_chain/3,
file_to_certificats/2,
validate_extension/3,
@@ -46,14 +46,14 @@
%%====================================================================
%%--------------------------------------------------------------------
--spec trusted_cert_and_path([der_cert()], db_handle(), certdb_ref()) ->
+-spec trusted_cert_and_path([der_cert()], db_handle(), certdb_ref(), fun()) ->
{der_cert() | unknown_ca, [der_cert()]}.
%%
%% Description: Extracts the root cert (if not presents tries to
%% look it up, if not found {bad_cert, unknown_ca} will be added verification
%% errors. Returns {RootCert, Path, VerifyErrors}
%%--------------------------------------------------------------------
-trusted_cert_and_path(CertChain, CertDbHandle, CertDbRef) ->
+trusted_cert_and_path(CertChain, CertDbHandle, CertDbRef, PartialChainHandler) ->
Path = [Cert | _] = lists:reverse(CertChain),
OtpCert = public_key:pkix_decode_cert(Cert, otp),
SignedAndIssuerID =
@@ -62,32 +62,23 @@ trusted_cert_and_path(CertChain, CertDbHandle, CertDbRef) ->
{ok, IssuerId} = public_key:pkix_issuer_id(OtpCert, self),
{self, IssuerId};
false ->
- case public_key:pkix_issuer_id(OtpCert, other) of
- {ok, IssuerId} ->
- {other, IssuerId};
- {error, issuer_not_found} ->
- case find_issuer(OtpCert, CertDbHandle) of
- {ok, IssuerId} ->
- {other, IssuerId};
- Other ->
- Other
- end
- end
+ other_issuer(OtpCert, CertDbHandle)
end,
case SignedAndIssuerID of
{error, issuer_not_found} ->
%% The root CA was not sent and can not be found.
- {unknown_ca, Path};
+ handle_incomplete_chain(Path, PartialChainHandler);
{self, _} when length(Path) == 1 ->
{selfsigned_peer, Path};
{_ ,{SerialNr, Issuer}} ->
case ssl_manager:lookup_trusted_cert(CertDbHandle, CertDbRef, SerialNr, Issuer) of
- {ok, {BinCert,_}} ->
- {BinCert, Path};
+ {ok, Trusted} ->
+ %% Trusted must be selfsigned or it is an incomplete chain
+ handle_path(Trusted, Path, PartialChainHandler);
_ ->
%% Root CA could not be verified
- {unknown_ca, Path}
+ handle_incomplete_chain(Path, PartialChainHandler)
end
end.
@@ -222,28 +213,27 @@ certificate_chain(CertDbHandle, CertsDbRef, Chain, SerialNr, Issuer, _SelfSigned
_ ->
%% The trusted cert may be obmitted from the chain as the
%% counter part needs to have it anyway to be able to
- %% verify it. This will be the normal case for servers
- %% that does not verify the clients and hence have not
- %% specified the cacertfile.
+ %% verify it.
{ok, lists:reverse(Chain)}
end.
find_issuer(OtpCert, CertDbHandle) ->
- IsIssuerFun = fun({_Key, {_Der, #'OTPCertificate'{} = ErlCertCandidate}}, Acc) ->
- case public_key:pkix_is_issuer(OtpCert, ErlCertCandidate) of
- true ->
- case verify_cert_signer(OtpCert, ErlCertCandidate#'OTPCertificate'.tbsCertificate) of
- true ->
- throw(public_key:pkix_issuer_id(ErlCertCandidate, self));
- false ->
- Acc
- end;
- false ->
- Acc
- end;
- (_, Acc) ->
- Acc
- end,
+ IsIssuerFun =
+ fun({_Key, {_Der, #'OTPCertificate'{} = ErlCertCandidate}}, Acc) ->
+ case public_key:pkix_is_issuer(OtpCert, ErlCertCandidate) of
+ true ->
+ case verify_cert_signer(OtpCert, ErlCertCandidate#'OTPCertificate'.tbsCertificate) of
+ true ->
+ throw(public_key:pkix_issuer_id(ErlCertCandidate, self));
+ false ->
+ Acc
+ end;
+ false ->
+ Acc
+ end;
+ (_, Acc) ->
+ Acc
+ end,
try ssl_pkix_db:foldl(IsIssuerFun, issuer_not_found, CertDbHandle) of
issuer_not_found ->
@@ -275,3 +265,41 @@ public_key(#'OTPSubjectPublicKeyInfo'{algorithm = #'PublicKeyAlgorithm'{algorith
parameters = {params, Params}},
subjectPublicKey = Key}) ->
{Key, Params}.
+
+other_issuer(OtpCert, CertDbHandle) ->
+ case public_key:pkix_issuer_id(OtpCert, other) of
+ {ok, IssuerId} ->
+ {other, IssuerId};
+ {error, issuer_not_found} ->
+ case find_issuer(OtpCert, CertDbHandle) of
+ {ok, IssuerId} ->
+ {other, IssuerId};
+ Other ->
+ Other
+ end
+ end.
+
+handle_path({BinCert, OTPCert}, Path, PartialChainHandler) ->
+ case public_key:pkix_is_self_signed(OTPCert) of
+ true ->
+ {BinCert, Path};
+ false ->
+ handle_incomplete_chain(Path, PartialChainHandler)
+ end.
+
+handle_incomplete_chain(Chain, Fun) ->
+ case catch Fun(Chain) of
+ {trusted_ca, DerCert} ->
+ new_trusteded_chain(DerCert, Chain);
+ unknown_ca = Error ->
+ {Error, Chain};
+ _ ->
+ {unknown_ca, Chain}
+ end.
+
+new_trusteded_chain(DerCert, [DerCert | Chain]) ->
+ {DerCert, Chain};
+new_trusteded_chain(DerCert, [_ | Rest]) ->
+ new_trusteded_chain(DerCert, Rest);
+new_trusteded_chain(_, []) ->
+ unknown_ca.
diff --git a/lib/ssl/src/ssl_connection.erl b/lib/ssl/src/ssl_connection.erl
index 4ac4e81d9e..8ff9913cee 100644
--- a/lib/ssl/src/ssl_connection.erl
+++ b/lib/ssl/src/ssl_connection.erl
@@ -414,7 +414,9 @@ certify(#certificate{} = Cert,
ssl_options = Opts} = State, Connection) ->
case ssl_handshake:certify(Cert, CertDbHandle, CertDbRef, Opts#ssl_options.depth,
Opts#ssl_options.verify,
- Opts#ssl_options.verify_fun, Role) of
+ Opts#ssl_options.verify_fun,
+ Opts#ssl_options.partial_chain,
+ Role) of
{PeerCert, PublicKeyInfo} ->
handle_peer_cert(Role, PeerCert, PublicKeyInfo,
State#state{client_certificate_requested = false}, Connection);
diff --git a/lib/ssl/src/ssl_handshake.erl b/lib/ssl/src/ssl_handshake.erl
index 94ffd180c5..22673e46e2 100644
--- a/lib/ssl/src/ssl_handshake.erl
+++ b/lib/ssl/src/ssl_handshake.erl
@@ -49,7 +49,7 @@
finished/5, next_protocol/1]).
%% Handle handshake messages
--export([certify/7, client_certificate_verify/6, certificate_verify/6, verify_signature/5,
+-export([certify/8, client_certificate_verify/6, certificate_verify/6, verify_signature/5,
master_secret/5, server_key_exchange_hash/2, verify_connection/6,
init_handshake_history/0, update_handshake_history/2, verify_server_key/5
]).
@@ -383,13 +383,13 @@ verify_signature(_Version, Hash, {HashAlgo, ecdsa}, Signature,
%%--------------------------------------------------------------------
-spec certify(#certificate{}, db_handle(), certdb_ref(), integer() | nolimit,
- verify_peer | verify_none, {fun(), term},
+ verify_peer | verify_none, {fun(), term}, fun(),
client | server) -> {der_cert(), public_key_info()} | #alert{}.
%%
%% Description: Handles a certificate handshake message
%%--------------------------------------------------------------------
certify(#certificate{asn1_certificates = ASN1Certs}, CertDbHandle, CertDbRef,
- MaxPathLen, _Verify, VerifyFunAndState, Role) ->
+ MaxPathLen, _Verify, VerifyFunAndState, PartialChain, Role) ->
[PeerCert | _] = ASN1Certs,
ValidationFunAndState =
@@ -421,7 +421,7 @@ certify(#certificate{asn1_certificates = ASN1Certs}, CertDbHandle, CertDbRef,
try
{TrustedErlCert, CertPath} =
- ssl_certificate:trusted_cert_and_path(ASN1Certs, CertDbHandle, CertDbRef),
+ ssl_certificate:trusted_cert_and_path(ASN1Certs, CertDbHandle, CertDbRef, PartialChain),
case public_key:pkix_path_validation(TrustedErlCert,
CertPath,
[{max_path_length,
diff --git a/lib/ssl/src/ssl_internal.hrl b/lib/ssl/src/ssl_internal.hrl
index fd0d87bd5f..85724de4bd 100644
--- a/lib/ssl/src/ssl_internal.hrl
+++ b/lib/ssl/src/ssl_internal.hrl
@@ -74,6 +74,7 @@
versions :: [ssl_record:ssl_version()], %% ssl_record:atom_version() in API
verify :: verify_none | verify_peer,
verify_fun, %%:: fun(CertVerifyErrors::term()) -> boolean(),
+ partial_chain :: fun(),
fail_if_no_peer_cert :: boolean(),
verify_client_once :: boolean(),
%% fun(Extensions, State, Verify, AccError) -> {Extensions, State, AccError}
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-24 16:50:20 +0000