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-rw-r--r--source3/include/rpc_dce.h30
-rw-r--r--source3/rpc_server/srv_pipe.c49
-rw-r--r--source3/rpc_server/srv_pipe_hnd.c81
3 files changed, 148 insertions, 12 deletions
diff --git a/source3/include/rpc_dce.h b/source3/include/rpc_dce.h
index 3de4d2b691..e718d92271 100644
--- a/source3/include/rpc_dce.h
+++ b/source3/include/rpc_dce.h
@@ -26,15 +26,27 @@
/* DCE/RPC packet types */
enum RPC_PKT_TYPE {
- RPC_REQUEST = 0x00,
- RPC_RESPONSE = 0x02,
- RPC_FAULT = 0x03,
- RPC_BIND = 0x0B,
- RPC_BINDACK = 0x0C,
- RPC_BINDNACK = 0x0D,
- RPC_ALTCONT = 0x0E,
- RPC_ALTCONTRESP = 0x0F,
- RPC_AUTH3 = 0x10 /* not the real name! this is undocumented! */
+ RPC_REQUEST = 0x00, /* Ordinary request. */
+ RPC_PING = 0x01, /* Connectionless is server alive ? */
+ RPC_RESPONSE = 0x02, /* Ordinary reply. */
+ RPC_FAULT = 0x03, /* Fault in processing of call. */
+ RPC_WORKING = 0x04, /* Connectionless reply to a ping when server busy. */
+ RPC_NOCALL = 0x05, /* Connectionless reply to a ping when server has lost part of clients call. */
+ RPC_REJECT = 0x06, /* Refuse a request with a code. */
+ RPC_ACK = 0x07, /* Connectionless client to server code. */
+ RPC_CL_CANCEL= 0x08, /* Connectionless cancel. */
+ RPC_FACK = 0x09, /* Connectionless fragment ack. Both client and server send. */
+ RPC_CANCEL_ACK = 0x0A, /* Server ACK to client cancel request. */
+ RPC_BIND = 0x0B, /* Bind to interface. */
+ RPC_BINDACK = 0x0C, /* Server ack of bind. */
+ RPC_BINDNACK = 0x0D, /* Server nack of bind. */
+ RPC_ALTCONT = 0x0E, /* Alter auth. */
+ RPC_ALTCONTRESP = 0x0F, /* Reply to alter auth. */
+ RPC_AUTH3 = 0x10, /* not the real name! this is undocumented! */
+ RPC_SHUTDOWN = 0x11, /* Server to client request to shutdown. */
+ RPC_CO_CANCEL= 0x12, /* Connection-oriented cancel request. */
+ RPC_ORPHANED = 0x13 /* Client telling server it's aborting a partially sent request or telling
+ server to stop sending replies. */
};
/* DCE/RPC flags */
diff --git a/source3/rpc_server/srv_pipe.c b/source3/rpc_server/srv_pipe.c
index b615080d34..8084e7673a 100644
--- a/source3/rpc_server/srv_pipe.c
+++ b/source3/rpc_server/srv_pipe.c
@@ -892,6 +892,55 @@ BOOL setup_fault_pdu(pipes_struct *p, NTSTATUS status)
return True;
}
+#if 0
+/*******************************************************************
+ Marshall a cancel_ack pdu.
+ We should probably check the auth-verifier here.
+*******************************************************************/
+
+BOOL setup_cancel_ack_reply(pipes_struct *p, prs_struct *rpc_in_p)
+{
+ prs_struct outgoing_pdu;
+ RPC_HDR ack_reply_hdr;
+
+ /* Free any memory in the current return data buffer. */
+ prs_mem_free(&p->out_data.rdata);
+
+ /*
+ * Marshall directly into the outgoing PDU space. We
+ * must do this as we need to set to the bind response
+ * header and are never sending more than one PDU here.
+ */
+
+ prs_init( &outgoing_pdu, 0, p->mem_ctx, MARSHALL);
+ prs_give_memory( &outgoing_pdu, (char *)p->out_data.current_pdu, sizeof(p->out_data.current_pdu), False);
+
+ /*
+ * Initialize a cancel_ack header.
+ */
+
+ init_rpc_hdr(&ack_reply_hdr, RPC_CANCEL_ACK, RPC_FLG_FIRST | RPC_FLG_LAST,
+ p->hdr.call_id, RPC_HEADER_LEN, 0);
+
+ /*
+ * Marshall the header into the outgoing PDU.
+ */
+
+ if(!smb_io_rpc_hdr("", &ack_reply_hdr, &outgoing_pdu, 0)) {
+ DEBUG(0,("setup_cancel_ack_reply: marshalling of RPC_HDR failed.\n"));
+ prs_mem_free(&outgoing_pdu);
+ return False;
+ }
+
+ p->out_data.data_sent_length = 0;
+ p->out_data.current_pdu_len = prs_offset(&outgoing_pdu);
+ p->out_data.current_pdu_sent = 0;
+
+ prs_mem_free(&outgoing_pdu);
+ return True;
+}
+#endif
+
/*******************************************************************
Ensure a bind request has the correct abstract & transfer interface.
Used to reject unknown binds from Win2k.
diff --git a/source3/rpc_server/srv_pipe_hnd.c b/source3/rpc_server/srv_pipe_hnd.c
index 6077faed16..5fb84115cc 100644
--- a/source3/rpc_server/srv_pipe_hnd.c
+++ b/source3/rpc_server/srv_pipe_hnd.c
@@ -716,6 +716,32 @@ static void process_complete_pdu(pipes_struct *p)
(unsigned int)p->hdr.pkt_type ));
switch (p->hdr.pkt_type) {
+ case RPC_REQUEST:
+ reply = process_request_pdu(p, &rpc_in);
+ break;
+
+ case RPC_PING: /* CL request - ignore... */
+ DEBUG(0,("process_complete_pdu: Error. Connectionless packet type %u received on pipe %s.\n",
+ (unsigned int)p->hdr.pkt_type, p->name));
+ break;
+
+ case RPC_RESPONSE: /* No responses here. */
+ DEBUG(0,("process_complete_pdu: Error. RPC_RESPONSE received from client on pipe %s.\n",
+ p->name ));
+ break;
+
+ case RPC_FAULT:
+ case RPC_WORKING: /* CL request - reply to a ping when a call in process. */
+ case RPC_NOCALL: /* CL - server reply to a ping call. */
+ case RPC_REJECT:
+ case RPC_ACK:
+ case RPC_CL_CANCEL:
+ case RPC_FACK:
+ case RPC_CANCEL_ACK:
+ DEBUG(0,("process_complete_pdu: Error. Connectionless packet type %u received on pipe %s.\n",
+ (unsigned int)p->hdr.pkt_type, p->name));
+ break;
+
case RPC_BIND:
/*
* We assume that a pipe bind is only in one pdu.
@@ -724,6 +750,14 @@ static void process_complete_pdu(pipes_struct *p)
reply = api_pipe_bind_req(p, &rpc_in);
}
break;
+
+ case RPC_BINDACK:
+ case RPC_BINDNACK:
+ DEBUG(0,("process_complete_pdu: Error. RPC_BINDACK/RPC_BINDNACK packet type %u received on pipe %s.\n",
+ (unsigned int)p->hdr.pkt_type, p->name));
+ break;
+
+
case RPC_ALTCONT:
/*
* We assume that a pipe bind is only in one pdu.
@@ -732,6 +766,12 @@ static void process_complete_pdu(pipes_struct *p)
reply = api_pipe_alter_context(p, &rpc_in);
}
break;
+
+ case RPC_ALTCONTRESP:
+ DEBUG(0,("process_complete_pdu: Error. RPC_ALTCONTRESP on pipe %s: Should only be server -> client.\n",
+ p->name));
+ break;
+
case RPC_AUTH3:
/*
* The third packet in an NTLMSSP auth exchange.
@@ -740,9 +780,38 @@ static void process_complete_pdu(pipes_struct *p)
reply = api_pipe_bind_auth3(p, &rpc_in);
}
break;
- case RPC_REQUEST:
- reply = process_request_pdu(p, &rpc_in);
+
+ case RPC_SHUTDOWN:
+ DEBUG(0,("process_complete_pdu: Error. RPC_SHUTDOWN on pipe %s: Should only be server -> client.\n",
+ p->name));
+ break;
+
+ case RPC_CO_CANCEL:
+ /* For now just free all client data and continue processing. */
+ DEBUG(3,("process_complete_pdu: RPC_ORPHANED. Abandoning rpc call.\n"));
+ /* As we never do asynchronous RPC serving, we can never cancel a
+ call (as far as I know). If we ever did we'd have to send a cancel_ack
+ reply. For now, just free all client data and continue processing. */
+ reply = True;
break;
+#if 0
+ /* Enable this if we're doing async rpc. */
+ /* We must check the call-id matches the outstanding callid. */
+ if(pipe_init_outgoing_data(p)) {
+ /* Send a cancel_ack PDU reply. */
+ /* We should probably check the auth-verifier here. */
+ reply = setup_cancel_ack_reply(p, &rpc_in);
+ }
+ break;
+#endif
+
+ case RPC_ORPHANED:
+ /* We should probably check the auth-verifier here.
+ For now just free all client data and continue processing. */
+ DEBUG(3,("process_complete_pdu: RPC_ORPHANED. Abandoning rpc call.\n"));
+ reply = True;
+ break;
+
default:
DEBUG(0,("process_complete_pdu: Unknown rpc type = %u received.\n", (unsigned int)p->hdr.pkt_type ));
break;
@@ -815,7 +884,13 @@ incoming data size = %u\n", (unsigned int)p->in_data.pdu_received_len, (unsigned
*/
if(p->in_data.pdu_needed_len == 0) {
- return unmarshall_rpc_header(p);
+ ssize_t rret = unmarshall_rpc_header(p);
+ if (rret == -1 || p->in_data.pdu_needed_len > 0) {
+ return rret;
+ }
+ /* If rret == 0 and pdu_needed_len == 0 here we have a PDU that consists
+ of an RPC_HEADER only. This is a RPC_SHUTDOWN, RPC_CO_CANCEL or RPC_ORPHANED
+ pdu type. Deal with this in process_complete_pdu(). */
}
/*
generated by cgit (git 2.34.1) at 2024-11-28 10:44:45 +0000