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https://github.com/samba-team/samba.git
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r13860: - add support for SMB2 ("SMB 2.001") negotiation in SMB negprot requests
- the default max protocol is still NT1
metze
(This used to be commit d1bae931b3
)
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1c49d8f794
commit
d8503c6ba1
@ -89,7 +89,8 @@ enum protocol_types {
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PROTOCOL_COREPLUS,
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PROTOCOL_LANMAN1,
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PROTOCOL_LANMAN2,
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PROTOCOL_NT1
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PROTOCOL_NT1,
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PROTOCOL_SMB2
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};
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/* passed to br lock code. FIXME: Move to one of the smb-specific headers */
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@ -279,6 +279,7 @@ static BOOL handle_copy(const char *pszParmValue, char **ptr);
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static void set_default_server_announce_type(void);
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static const struct enum_list enum_protocol[] = {
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{PROTOCOL_SMB2, "SMB2"},
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{PROTOCOL_NT1, "NT1"},
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{PROTOCOL_LANMAN2, "LANMAN2"},
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{PROTOCOL_LANMAN1, "LANMAN1"},
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@ -595,7 +596,6 @@ static void init_globals(void)
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myname = get_myname();
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do_parameter("netbios name", myname, NULL);
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SAFE_FREE(myname);
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do_parameter("max protocol", "NT1", NULL);
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do_parameter("name resolve order", "lmhosts wins host bcast", NULL);
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do_parameter("fstype", FSTYPE_STRING, NULL);
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@ -646,7 +646,8 @@ static void init_globals(void)
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do_parameter("max xmit", "12288", NULL);
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do_parameter("password level", "0", NULL);
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do_parameter("LargeReadwrite", "True", NULL);
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do_parameter("minprotocol", "CORE", NULL);
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do_parameter("min protocol", "CORE", NULL);
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do_parameter("max protocol", "NT1", NULL);
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do_parameter("security", "USER", NULL);
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do_parameter("paranoid server security", "True", NULL);
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do_parameter("EncryptPasswords", "True", NULL);
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@ -21,7 +21,10 @@
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#include "includes.h"
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#include "auth/auth.h"
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#include "smb_server/smb_server.h"
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#include "libcli/smb2/smb2.h"
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#include "smb_server/smb2/smb2_server.h"
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#include "smbd/service_stream.h"
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#include "lib/stream/packet.h"
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/* initialise the auth_context for this server and return the cryptkey */
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@ -415,7 +418,33 @@ static void reply_nt1(struct smbsrv_request *req, uint16_t choice)
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req_send_reply_nosign(req);
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}
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/*
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after a SMB2 2.001 negprot reply to a SMB negprot request
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no (SMB or SMB2) requests are allowed anymore,
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vista resets the connection in this case
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*/
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static NTSTATUS smbsrv_recv_disabled_request(void *private, DATA_BLOB blob)
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{
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struct smbsrv_connection *smb_conn = talloc_get_type(private, struct smbsrv_connection);
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smbsrv_terminate_connection(smb_conn, "Receive Packet after SMB -> SMB2 negprot");
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return NT_STATUS_OK;
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}
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/****************************************************************************
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Reply for the SMB2 2.001 protocol
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****************************************************************************/
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static void reply_smb2(struct smbsrv_request *req, uint16_t choice)
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{
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struct smbsrv_connection *smb_conn = req->smb_conn;
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/* reply with a SMB2 packet */
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smb2srv_reply_smb_negprot(req);
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req = NULL;
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/* disallow requests */
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packet_set_callback(smb_conn->packet, smbsrv_recv_disabled_request);
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}
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/* List of supported protocols, most desired first */
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static const struct {
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const char *proto_name;
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@ -423,6 +452,7 @@ static const struct {
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void (*proto_reply_fn)(struct smbsrv_request *req, uint16_t choice);
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int protocol_level;
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} supported_protocols[] = {
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{"SMB 2.001", "SMB2", reply_smb2, PROTOCOL_SMB2},
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{"NT LANMAN 1.0", "NT1", reply_nt1, PROTOCOL_NT1},
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{"NT LM 0.12", "NT1", reply_nt1, PROTOCOL_NT1},
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{"LANMAN2.1", "LANMAN2", reply_lanman2, PROTOCOL_LANMAN2},
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@ -173,3 +173,56 @@ void smb2srv_negprot_recv(struct smb2srv_request *req)
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}
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smb2srv_negprot_send(req, io);
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}
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/*
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* reply to a SMB negprot request with dialect "SMB 2.001"
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*/
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void smb2srv_reply_smb_negprot(struct smbsrv_request *smb_req)
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{
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struct smb2srv_request *req;
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uint32_t body_fixed_size = 0x26;
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/* create a fake SMB2 negprot request */
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req = talloc_zero(smb_req->smb_conn, struct smb2srv_request);
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if (!req) goto nomem;
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req->smb_conn = smb_req->smb_conn;
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req->request_time = smb_req->request_time;
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talloc_steal(req, smb_req);
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req->in.size = NBT_HDR_SIZE+SMB2_HDR_BODY+body_fixed_size;
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req->in.allocated = req->in.size;
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req->in.buffer = talloc_size(req, req->in.allocated);
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if (!req->in.buffer) goto nomem;
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req->in.hdr = req->in.buffer + NBT_HDR_SIZE;
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req->in.body = req->in.hdr + SMB2_HDR_BODY;
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req->in.body_size = body_fixed_size;
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req->in.dynamic = NULL;
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SIVAL(req->in.hdr, 0, SMB2_MAGIC);
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SSVAL(req->in.hdr, SMB2_HDR_LENGTH, SMB2_HDR_BODY);
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SSVAL(req->in.hdr, SMB2_HDR_PAD1, 0);
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SIVAL(req->in.hdr, SMB2_HDR_STATUS, 0);
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SSVAL(req->in.hdr, SMB2_HDR_OPCODE, SMB2_OP_NEGPROT);
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SSVAL(req->in.hdr, SMB2_HDR_PAD2, 0);
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SIVAL(req->in.hdr, SMB2_HDR_FLAGS, 0);
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SIVAL(req->in.hdr, SMB2_HDR_UNKNOWN, 0);
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SBVAL(req->in.hdr, SMB2_HDR_SEQNUM, 0);
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SIVAL(req->in.hdr, SMB2_HDR_PID, 0);
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SIVAL(req->in.hdr, SMB2_HDR_TID, 0);
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SBVAL(req->in.hdr, SMB2_HDR_UID, 0);
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memset(req->in.hdr+SMB2_HDR_SIG, 0, 16);
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/* this seems to be a bug, they use 0x24 but the length is 0x26 */
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SSVAL(req->in.body, 0x00, 0x24);
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SSVAL(req->in.body, 0x02, 1);
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memset(req->in.body+0x04, 0, 32);
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SSVAL(req->in.body, 0x24, 0);
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smb2srv_negprot_recv(req);
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return;
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nomem:
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smbsrv_terminate_connection(smb_req->smb_conn, nt_errstr(NT_STATUS_NO_MEMORY));
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talloc_free(req);
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return;
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}
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@ -56,14 +56,14 @@ static NTSTATUS smbsrv_recv_generic_request(void *private, DATA_BLOB blob)
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packet_set_callback(smb_conn->packet, smbsrv_recv_smb_request);
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return smbsrv_recv_smb_request(smb_conn, blob);
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case SMB2_MAGIC:
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if (!lp_parm_bool(-1, "smbsrv", "enable smb2", False)) break;
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if (lp_maxprotocol() < PROTOCOL_SMB2) break;
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status = smbsrv_init_smb2_connection(smb_conn);
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NT_STATUS_NOT_OK_RETURN(status);
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packet_set_callback(smb_conn->packet, smbsrv_recv_smb2_request);
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return smbsrv_recv_smb2_request(smb_conn, blob);
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}
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DEBUG(2,("Invalid SMB packet: protocl prefix: 0x%08X\n", protocol_version));
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DEBUG(2,("Invalid SMB packet: protocol prefix: 0x%08X\n", protocol_version));
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smbsrv_terminate_connection(smb_conn, "NON-SMB packet");
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return NT_STATUS_OK;
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}
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