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librpc/rpc: add support DCERPC_PFC_FLAG_SUPPORT_HEADER_SIGN

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You can trigger it like this:

ncacn_ip_tcp:172.31.9.234[sign,hdrsign]

or

ncacn_ip_tcp:172.31.9.234[seal,hdrsign]

metze
This commit is contained in:
Stefan Metzmacher 2008-08-06 21:35:07 +02:00
parent 60b3523da4
commit 54f1fca582
4 changed files with 35 additions and 1 deletions
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3
source/librpc/rpc/binding.c
View File

@ -83,7 +83,8 @@ static const struct {
{"print", DCERPC_DEBUG_PRINT_BOTH},
{"padcheck", DCERPC_DEBUG_PAD_CHECK},
{"bigendian", DCERPC_PUSH_BIGENDIAN},
{"smb2", DCERPC_SMB2}
{"smb2", DCERPC_SMB2},
{"hdrsign", DCERPC_HEADER_SIGNING}
};
const char *epm_floor_string(TALLOC_CTX *mem_ctx, struct epm_floor *epm_floor)

26
source/librpc/rpc/dcerpc.c
View File

@ -658,6 +658,16 @@ static void dcerpc_bind_recv_handler(struct rpc_request *req,
conn->srv_max_xmit_frag = pkt->u.bind_ack.max_xmit_frag;
conn->srv_max_recv_frag = pkt->u.bind_ack.max_recv_frag;
if ((req->p->binding->flags & DCERPC_CONCURRENT_MULTIPLEX) &&
(pkt->pfc_flags & DCERPC_PFC_FLAG_CONC_MPX)) {
conn->flags |= DCERPC_CONCURRENT_MULTIPLEX;
}
if ((req->p->binding->flags & DCERPC_HEADER_SIGNING) &&
(pkt->pfc_flags & DCERPC_PFC_FLAG_SUPPORT_HEADER_SIGN)) {
conn->flags |= DCERPC_HEADER_SIGNING;
}
/* the bind_ack might contain a reply set of credentials */
if (conn->security_state.auth_info &&
pkt->u.bind_ack.auth_info.length) {
@ -731,6 +741,10 @@ struct composite_context *dcerpc_bind_send(struct dcerpc_pipe *p,
pkt.pfc_flags |= DCERPC_PFC_FLAG_CONC_MPX;
}
if (p->binding->flags & DCERPC_HEADER_SIGNING) {
pkt.pfc_flags |= DCERPC_PFC_FLAG_SUPPORT_HEADER_SIGN;
}
pkt.u.bind.max_xmit_frag = 5840;
pkt.u.bind.max_recv_frag = 5840;
pkt.u.bind.assoc_group_id = p->binding->assoc_group_id;
@ -806,6 +820,14 @@ NTSTATUS dcerpc_auth3(struct dcerpc_pipe *p,
pkt.u.auth3._pad = 0;
pkt.u.auth3.auth_info = data_blob(NULL, 0);
if (p->binding->flags & DCERPC_CONCURRENT_MULTIPLEX) {
pkt.pfc_flags |= DCERPC_PFC_FLAG_CONC_MPX;
}
if (p->binding->flags & DCERPC_HEADER_SIGNING) {
pkt.pfc_flags |= DCERPC_PFC_FLAG_SUPPORT_HEADER_SIGN;
}
/* construct the NDR form of the packet */
status = ncacn_push_auth(&blob, mem_ctx,
p->conn->iconv_convenience,
@ -1630,6 +1652,10 @@ struct composite_context *dcerpc_alter_context_send(struct dcerpc_pipe *p,
pkt.pfc_flags |= DCERPC_PFC_FLAG_CONC_MPX;
}
if (p->binding->flags & DCERPC_HEADER_SIGNING) {
pkt.pfc_flags |= DCERPC_PFC_FLAG_SUPPORT_HEADER_SIGN;
}
pkt.u.alter.max_xmit_frag = 5840;
pkt.u.alter.max_recv_frag = 5840;
pkt.u.alter.assoc_group_id = p->binding->assoc_group_id;

3
source/librpc/rpc/dcerpc.h
View File

@ -163,6 +163,9 @@ struct dcerpc_pipe {
/* this triggers the DCERPC_PFC_FLAG_CONC_MPX flag in the bind request */
#define DCERPC_CONCURRENT_MULTIPLEX (1<<19)
/* this triggers the DCERPC_PFC_FLAG_SUPPORT_HEADER_SIGN flag in the bind request */
#define DCERPC_HEADER_SIGNING (1<<20)
/* this describes a binding to a particular transport/pipe */
struct dcerpc_binding {
enum dcerpc_transport_t transport;

4
source/librpc/rpc/dcerpc_auth.c
View File

@ -137,6 +137,10 @@ static void bind_auth_next_step(struct composite_context *c)
if (!composite_is_ok(c)) return;
if (state->pipe->conn->flags & DCERPC_HEADER_SIGNING) {
gensec_want_feature(sec->generic_state, GENSEC_FEATURE_SIGN_PKT_HEADER);
}
if (state->credentials.length == 0) {
composite_done(c);
return;