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s3:rpc_client: implement bind time feature negotiation

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This is not strictly needed as we don't use any of the
optional features yet.

But it will make it easier to add bind time features we'll
actually use later.

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>

Autobuild-User(master): Stefan Metzmacher <metze@samba.org>
Autobuild-Date(master): Tue Apr 23 17:29:55 UTC 2024 on atb-devel-224
This commit is contained in:
Stefan Metzmacher 2024-04-19 01:22:17 +02:00
parent 713a802257
commit daf6d371f3
2 changed files with 37 additions and 7 deletions
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29
source3/rpc_client/cli_pipe.c
View File

@ -1130,17 +1130,28 @@ static NTSTATUS create_bind_or_alt_ctx_internal(TALLOC_CTX *mem_ctx,
{
uint16_t auth_len = auth_info->length;
NTSTATUS status;
struct dcerpc_ctx_list ctx_list = {
struct ndr_syntax_id bind_time_features = dcerpc_construct_bind_time_features(
DCERPC_BIND_TIME_SECURITY_CONTEXT_MULTIPLEXING |
DCERPC_BIND_TIME_KEEP_CONNECTION_ON_ORPHAN);
struct dcerpc_ctx_list ctx_list[2] = {
[0] = {
.context_id = 0,
.num_transfer_syntaxes = 1,
.abstract_syntax = *abstract,
.transfer_syntaxes = (struct ndr_syntax_id *)discard_const(transfer),
},
[1] = {
.context_id = 1,
.num_transfer_syntaxes = 1,
.abstract_syntax = *abstract,
.transfer_syntaxes = &bind_time_features,
},
};
union dcerpc_payload u = {
.bind.max_xmit_frag = RPC_MAX_PDU_FRAG_LEN,
.bind.max_recv_frag = RPC_MAX_PDU_FRAG_LEN,
.bind.num_contexts = 1,
.bind.ctx_list = &ctx_list,
.bind.num_contexts = ptype == DCERPC_PKT_BIND ? 2 : 1,
.bind.ctx_list = ctx_list,
.bind.auth_info = *auth_info,
};
uint8_t pfc_flags = DCERPC_PFC_FLAG_FIRST | DCERPC_PFC_FLAG_LAST;
@ -1685,6 +1696,18 @@ static bool check_bind_response(const struct dcerpc_bind_ack *r,
return false;
}
if (r->num_results >= 2) {
const struct dcerpc_ack_ctx *neg = &r->ctx_list[1];
if (neg->result == DCERPC_BIND_ACK_RESULT_NEGOTIATE_ACK) {
cli->bind_time_features = neg->reason.negotiate;
} else {
DBG_DEBUG("bind_time_feature failed - "
"result: %d reason %x\n",
neg->result, neg->reason.value);
}
}
DEBUG(5,("check_bind_response: accepted!\n"));
return True;
}

7
source3/rpc_client/rpc_client.h
View File

@ -37,6 +37,13 @@ struct rpc_pipe_client {
struct rpc_cli_transport *transport;
struct dcerpc_binding_handle *binding_handle;
/*
* This is per association_group, but
* for now we only have one connection
* per association_group.
*/
uint16_t bind_time_features;
struct ndr_syntax_id abstract_syntax;
struct ndr_syntax_id transfer_syntax;
bool verified_pcontext;