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krb5/Pass-channel-bindings-through-SPNEGO.patch
Robbie Harwood dec02b8411 Pass channel bindings through SPNEGO
2020-05-26 14:34:53 -04:00

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From dd82ae2d390c4de1b8a7737a918d80d6829366dd Mon Sep 17 00:00:00 2001
From: Isaac Boukris <iboukris@gmail.com>
Date: Tue, 28 Apr 2020 18:15:55 +0200
Subject: [PATCH] Pass channel bindings through SPNEGO
ticket: 8907 (new)
(cherry picked from commit d16325a24c34ec9a5f6fb4910987f162e0d4d9cd)
---
src/lib/gssapi/spnego/gssapiP_negoex.h | 8 ++---
src/lib/gssapi/spnego/negoex_ctx.c | 34 +++++++++++----------
src/lib/gssapi/spnego/spnego_mech.c | 41 +++++++++++++-------------
3 files changed, 43 insertions(+), 40 deletions(-)
diff --git a/src/lib/gssapi/spnego/gssapiP_negoex.h b/src/lib/gssapi/spnego/gssapiP_negoex.h
index 44b08f523..489ab7c42 100644
--- a/src/lib/gssapi/spnego/gssapiP_negoex.h
+++ b/src/lib/gssapi/spnego/gssapiP_negoex.h
@@ -201,10 +201,10 @@ negoex_restrict_auth_schemes(spnego_gss_ctx_id_t ctx,
OM_uint32
negoex_init(OM_uint32 *minor, spnego_gss_ctx_id_t ctx, gss_cred_id_t cred,
gss_name_t target_name, OM_uint32 req_flags, OM_uint32 time_req,
- gss_buffer_t input_token, gss_buffer_t output_token,
- OM_uint32 *time_rec);
+ gss_buffer_t input_token, gss_channel_bindings_t bindings,
+ gss_buffer_t output_token, OM_uint32 *time_rec);
OM_uint32
negoex_accept(OM_uint32 *minor, spnego_gss_ctx_id_t ctx, gss_cred_id_t cred,
- gss_buffer_t input_token, gss_buffer_t output_token,
- OM_uint32 *time_rec);
+ gss_buffer_t input_token, gss_channel_bindings_t bindings,
+ gss_buffer_t output_token, OM_uint32 *time_rec);
diff --git a/src/lib/gssapi/spnego/negoex_ctx.c b/src/lib/gssapi/spnego/negoex_ctx.c
index 18d9d4147..8848ee4db 100644
--- a/src/lib/gssapi/spnego/negoex_ctx.c
+++ b/src/lib/gssapi/spnego/negoex_ctx.c
@@ -276,7 +276,8 @@ static OM_uint32
mech_init(OM_uint32 *minor, spnego_gss_ctx_id_t ctx, gss_cred_id_t cred,
gss_name_t target, OM_uint32 req_flags, OM_uint32 time_req,
struct negoex_message *messages, size_t nmessages,
- gss_buffer_t output_token, OM_uint32 *time_rec)
+ gss_channel_bindings_t bindings, gss_buffer_t output_token,
+ OM_uint32 *time_rec)
{
OM_uint32 major, first_major = 0, first_minor = 0;
struct negoex_auth_mech *mech = NULL;
@@ -316,10 +317,9 @@ mech_init(OM_uint32 *minor, spnego_gss_ctx_id_t ctx, gss_cred_id_t cred,
mech = K5_TAILQ_FIRST(&ctx->negoex_mechs);
major = gss_init_sec_context(minor, cred, &mech->mech_context, target,
- mech->oid, req_flags, time_req,
- GSS_C_NO_CHANNEL_BINDINGS, input_token,
- &ctx->actual_mech, output_token,
- &ctx->ctx_flags, time_rec);
+ mech->oid, req_flags, time_req, bindings,
+ input_token, &ctx->actual_mech,
+ output_token, &ctx->ctx_flags, time_rec);
if (major == GSS_S_COMPLETE)
mech->complete = 1;
@@ -351,7 +351,8 @@ mech_init(OM_uint32 *minor, spnego_gss_ctx_id_t ctx, gss_cred_id_t cred,
static OM_uint32
mech_accept(OM_uint32 *minor, spnego_gss_ctx_id_t ctx,
gss_cred_id_t cred, struct negoex_message *messages,
- size_t nmessages, gss_buffer_t output_token, OM_uint32 *time_rec)
+ size_t nmessages, gss_channel_bindings_t bindings,
+ gss_buffer_t output_token, OM_uint32 *time_rec)
{
OM_uint32 major, tmpmin;
struct negoex_auth_mech *mech;
@@ -395,10 +396,10 @@ mech_accept(OM_uint32 *minor, spnego_gss_ctx_id_t ctx,
gss_release_cred(&tmpmin, &ctx->deleg_cred);
major = gss_accept_sec_context(minor, &mech->mech_context, cred,
- &msg->token, GSS_C_NO_CHANNEL_BINDINGS,
- &ctx->internal_name, &ctx->actual_mech,
- output_token, &ctx->ctx_flags,
- time_rec, &ctx->deleg_cred);
+ &msg->token, bindings, &ctx->internal_name,
+ &ctx->actual_mech, output_token,
+ &ctx->ctx_flags, time_rec,
+ &ctx->deleg_cred);
if (major == GSS_S_COMPLETE)
mech->complete = 1;
@@ -609,8 +610,8 @@ make_output_token(OM_uint32 *minor, spnego_gss_ctx_id_t ctx,
OM_uint32
negoex_init(OM_uint32 *minor, spnego_gss_ctx_id_t ctx, gss_cred_id_t cred,
gss_name_t target_name, OM_uint32 req_flags, OM_uint32 time_req,
- gss_buffer_t input_token, gss_buffer_t output_token,
- OM_uint32 *time_rec)
+ gss_buffer_t input_token, gss_channel_bindings_t bindings,
+ gss_buffer_t output_token, OM_uint32 *time_rec)
{
OM_uint32 major, tmpmin;
gss_buffer_desc mech_output_token = GSS_C_EMPTY_BUFFER;
@@ -663,7 +664,8 @@ negoex_init(OM_uint32 *minor, spnego_gss_ctx_id_t ctx, gss_cred_id_t cred,
/* Process the input token and/or produce an output token. This may prune
* the mech list, but on success there will be at least one mech entry. */
major = mech_init(minor, ctx, cred, target_name, req_flags, time_req,
- messages, nmessages, &mech_output_token, time_rec);
+ messages, nmessages, bindings, &mech_output_token,
+ time_rec);
if (major != GSS_S_COMPLETE)
goto cleanup;
assert(!K5_TAILQ_EMPTY(&ctx->negoex_mechs));
@@ -701,8 +703,8 @@ cleanup:
OM_uint32
negoex_accept(OM_uint32 *minor, spnego_gss_ctx_id_t ctx, gss_cred_id_t cred,
- gss_buffer_t input_token, gss_buffer_t output_token,
- OM_uint32 *time_rec)
+ gss_buffer_t input_token, gss_channel_bindings_t bindings,
+ gss_buffer_t output_token, OM_uint32 *time_rec)
{
OM_uint32 major, tmpmin;
gss_buffer_desc mech_output_token = GSS_C_EMPTY_BUFFER;
@@ -754,7 +756,7 @@ negoex_accept(OM_uint32 *minor, spnego_gss_ctx_id_t ctx, gss_cred_id_t cred,
* prune the list to a single mech. Continue on error if an output token
* is generated, so that we send the token to the initiator.
*/
- major = mech_accept(minor, ctx, cred, messages, nmessages,
+ major = mech_accept(minor, ctx, cred, messages, nmessages, bindings,
&mech_output_token, time_rec);
if (major != GSS_S_COMPLETE && mech_output_token.length == 0)
goto cleanup;
diff --git a/src/lib/gssapi/spnego/spnego_mech.c b/src/lib/gssapi/spnego/spnego_mech.c
index 594fc5894..4cf011143 100644
--- a/src/lib/gssapi/spnego/spnego_mech.c
+++ b/src/lib/gssapi/spnego/spnego_mech.c
@@ -130,6 +130,7 @@ init_ctx_reselect(OM_uint32 *, spnego_gss_ctx_id_t, OM_uint32,
static OM_uint32
init_ctx_call_init(OM_uint32 *, spnego_gss_ctx_id_t, spnego_gss_cred_id_t,
OM_uint32, gss_name_t, OM_uint32, OM_uint32, gss_buffer_t,
+ gss_channel_bindings_t,
gss_buffer_t, OM_uint32 *, send_token_flag *);
static OM_uint32
@@ -144,8 +145,8 @@ acc_ctx_vfy_oid(OM_uint32 *, spnego_gss_ctx_id_t, gss_OID,
OM_uint32 *, send_token_flag *);
static OM_uint32
acc_ctx_call_acc(OM_uint32 *, spnego_gss_ctx_id_t, spnego_gss_cred_id_t,
- gss_buffer_t, gss_buffer_t, OM_uint32 *, OM_uint32 *,
- send_token_flag *);
+ gss_buffer_t, gss_channel_bindings_t, gss_buffer_t,
+ OM_uint32 *, OM_uint32 *, send_token_flag *);
static gss_OID
negotiate_mech(spnego_gss_ctx_id_t, gss_OID_set, OM_uint32 *);
@@ -905,6 +906,7 @@ init_ctx_call_init(OM_uint32 *minor_status,
OM_uint32 req_flags,
OM_uint32 time_req,
gss_buffer_t mechtok_in,
+ gss_channel_bindings_t bindings,
gss_buffer_t mechtok_out,
OM_uint32 *time_rec,
send_token_flag *send_token)
@@ -921,15 +923,14 @@ init_ctx_call_init(OM_uint32 *minor_status,
if (gss_oid_equal(sc->internal_mech, &negoex_mech)) {
ret = negoex_init(minor_status, sc, mcred, target_name,
mech_req_flags, time_req, mechtok_in,
- mechtok_out, time_rec);
+ bindings, mechtok_out, time_rec);
} else {
ret = gss_init_sec_context(minor_status, mcred,
&sc->ctx_handle, target_name,
sc->internal_mech, mech_req_flags,
- time_req, GSS_C_NO_CHANNEL_BINDINGS,
- mechtok_in, &sc->actual_mech,
- mechtok_out, &sc->ctx_flags,
- time_rec);
+ time_req, bindings, mechtok_in,
+ &sc->actual_mech, mechtok_out,
+ &sc->ctx_flags, time_rec);
}
/* Bail out if the acceptor gave us an error token but the mech didn't
@@ -981,8 +982,8 @@ init_ctx_call_init(OM_uint32 *minor_status,
gss_delete_sec_context(&tmpmin, &sc->ctx_handle, GSS_C_NO_BUFFER);
tmpret = init_ctx_call_init(&tmpmin, sc, spcred, acc_negState,
target_name, req_flags, time_req,
- mechtok_in, mechtok_out, time_rec,
- send_token);
+ mechtok_in, bindings, mechtok_out,
+ time_rec, send_token);
if (HARD_ERROR(tmpret))
goto fail;
*minor_status = tmpmin;
@@ -1004,7 +1005,7 @@ spnego_gss_init_sec_context(
gss_OID mech_type,
OM_uint32 req_flags,
OM_uint32 time_req,
- gss_channel_bindings_t input_chan_bindings,
+ gss_channel_bindings_t bindings,
gss_buffer_t input_token,
gss_OID *actual_mech,
gss_buffer_t output_token,
@@ -1084,8 +1085,8 @@ spnego_gss_init_sec_context(
if (!spnego_ctx->mech_complete) {
ret = init_ctx_call_init(minor_status, spnego_ctx, spcred,
acc_negState, target_name, req_flags,
- time_req, mechtok_in, &mechtok_out,
- time_rec, &send_token);
+ time_req, mechtok_in, bindings,
+ &mechtok_out, time_rec, &send_token);
if (ret != GSS_S_COMPLETE)
goto cleanup;
@@ -1542,8 +1543,9 @@ cleanup:
static OM_uint32
acc_ctx_call_acc(OM_uint32 *minor_status, spnego_gss_ctx_id_t sc,
spnego_gss_cred_id_t spcred, gss_buffer_t mechtok_in,
- gss_buffer_t mechtok_out, OM_uint32 *time_rec,
- OM_uint32 *negState, send_token_flag *tokflag)
+ gss_channel_bindings_t bindings, gss_buffer_t mechtok_out,
+ OM_uint32 *time_rec, OM_uint32 *negState,
+ send_token_flag *tokflag)
{
OM_uint32 ret, tmpmin;
gss_OID_desc mechoid;
@@ -1568,13 +1570,12 @@ acc_ctx_call_acc(OM_uint32 *minor_status, spnego_gss_ctx_id_t sc,
mcred = (spcred == NULL) ? GSS_C_NO_CREDENTIAL : spcred->mcred;
if (negoex) {
ret = negoex_accept(minor_status, sc, mcred, mechtok_in,
- mechtok_out, time_rec);
+ bindings, mechtok_out, time_rec);
} else {
(void) gss_release_name(&tmpmin, &sc->internal_name);
(void) gss_release_cred(&tmpmin, &sc->deleg_cred);
ret = gss_accept_sec_context(minor_status, &sc->ctx_handle,
- mcred, mechtok_in,
- GSS_C_NO_CHANNEL_BINDINGS,
+ mcred, mechtok_in, bindings,
&sc->internal_name,
&sc->actual_mech, mechtok_out,
&sc->ctx_flags, time_rec,
@@ -1620,7 +1621,7 @@ spnego_gss_accept_sec_context(
gss_ctx_id_t *context_handle,
gss_cred_id_t verifier_cred_handle,
gss_buffer_t input_token,
- gss_channel_bindings_t input_chan_bindings,
+ gss_channel_bindings_t bindings,
gss_name_t *src_name,
gss_OID *mech_type,
gss_buffer_t output_token,
@@ -1734,8 +1735,8 @@ spnego_gss_accept_sec_context(
*/
if (negState != REQUEST_MIC && mechtok_in != GSS_C_NO_BUFFER) {
ret = acc_ctx_call_acc(minor_status, sc, spcred, mechtok_in,
- &mechtok_out, time_rec, &negState,
- &return_token);
+ bindings, &mechtok_out, time_rec,
+ &negState, &return_token);
}
/* Step 3: process or generate the MIC, if the negotiated mech is
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