talloc_stack: Call talloc destructors while frame is still around
[Samba.git] / source4 / smb_server / smb_server.c
blob45641a4f2c92884b2db037bfd2f08ed773e2a614
1 /*
2 Unix SMB/CIFS implementation.
3 process incoming packets - main loop
4 Copyright (C) Andrew Tridgell 2004-2005
5 Copyright (C) Stefan Metzmacher 2004-2005
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>.
21 #include "includes.h"
22 #include "smbd/service_task.h"
23 #include "smbd/service_stream.h"
24 #include "smbd/service.h"
25 #include "smb_server/smb_server.h"
26 #include "smb_server/service_smb_proto.h"
27 #include "lib/messaging/irpc.h"
28 #include "lib/stream/packet.h"
29 #include "libcli/smb2/smb2.h"
30 #include "smb_server/smb2/smb2_server.h"
31 #include "system/network.h"
32 #include "lib/socket/netif.h"
33 #include "param/share.h"
34 #include "dsdb/samdb/samdb.h"
35 #include "param/param.h"
37 static NTSTATUS smbsrv_recv_generic_request(void *private_data, DATA_BLOB blob)
39 NTSTATUS status;
40 struct smbsrv_connection *smb_conn = talloc_get_type(private_data, struct smbsrv_connection);
41 uint32_t protocol_version;
43 /* see if its a special NBT packet */
44 if (CVAL(blob.data,0) != 0) {
45 status = smbsrv_init_smb_connection(smb_conn, smb_conn->lp_ctx);
46 NT_STATUS_NOT_OK_RETURN(status);
47 packet_set_callback(smb_conn->packet, smbsrv_recv_smb_request);
48 return smbsrv_recv_smb_request(smb_conn, blob);
51 if (blob.length < (NBT_HDR_SIZE + MIN_SMB_SIZE)) {
52 DEBUG(2,("Invalid SMB packet length count %ld\n", (long)blob.length));
53 smbsrv_terminate_connection(smb_conn, "Invalid SMB packet");
54 return NT_STATUS_OK;
57 protocol_version = IVAL(blob.data, NBT_HDR_SIZE);
59 switch (protocol_version) {
60 case SMB_MAGIC:
61 status = smbsrv_init_smb_connection(smb_conn, smb_conn->lp_ctx);
62 NT_STATUS_NOT_OK_RETURN(status);
63 packet_set_callback(smb_conn->packet, smbsrv_recv_smb_request);
64 return smbsrv_recv_smb_request(smb_conn, blob);
65 case SMB2_MAGIC:
66 if (lpcfg_server_max_protocol(smb_conn->lp_ctx) < PROTOCOL_SMB2_02) break;
67 status = smbsrv_init_smb2_connection(smb_conn);
68 NT_STATUS_NOT_OK_RETURN(status);
69 packet_set_callback(smb_conn->packet, smbsrv_recv_smb2_request);
70 return smbsrv_recv_smb2_request(smb_conn, blob);
73 DEBUG(2,("Invalid SMB packet: protocol prefix: 0x%08X\n", protocol_version));
74 smbsrv_terminate_connection(smb_conn, "NON-SMB packet");
75 return NT_STATUS_OK;
79 close the socket and shutdown a server_context
81 void smbsrv_terminate_connection(struct smbsrv_connection *smb_conn, const char *reason)
83 stream_terminate_connection(smb_conn->connection, reason);
87 called when a SMB socket becomes readable
89 static void smbsrv_recv(struct stream_connection *conn, uint16_t flags)
91 struct smbsrv_connection *smb_conn = talloc_get_type(conn->private_data,
92 struct smbsrv_connection);
94 DEBUG(10,("smbsrv_recv\n"));
96 packet_recv(smb_conn->packet);
100 called when a SMB socket becomes writable
102 static void smbsrv_send(struct stream_connection *conn, uint16_t flags)
104 struct smbsrv_connection *smb_conn = talloc_get_type(conn->private_data,
105 struct smbsrv_connection);
106 packet_queue_run(smb_conn->packet);
110 handle socket recv errors
112 static void smbsrv_recv_error(void *private_data, NTSTATUS status)
114 struct smbsrv_connection *smb_conn = talloc_get_type(private_data, struct smbsrv_connection);
116 smbsrv_terminate_connection(smb_conn, nt_errstr(status));
120 initialise a server_context from a open socket and register a event handler
121 for reading from that socket
123 static void smbsrv_accept(struct stream_connection *conn)
125 struct smbsrv_connection *smb_conn;
127 DEBUG(5,("smbsrv_accept\n"));
129 smb_conn = talloc_zero(conn, struct smbsrv_connection);
130 if (!smb_conn) {
131 stream_terminate_connection(conn, "out of memory");
132 return;
135 smb_conn->packet = packet_init(smb_conn);
136 if (!smb_conn->packet) {
137 smbsrv_terminate_connection(smb_conn, "out of memory");
138 return;
140 packet_set_private(smb_conn->packet, smb_conn);
141 packet_set_socket(smb_conn->packet, conn->socket);
142 packet_set_callback(smb_conn->packet, smbsrv_recv_generic_request);
143 packet_set_full_request(smb_conn->packet, packet_full_request_nbt);
144 packet_set_error_handler(smb_conn->packet, smbsrv_recv_error);
145 packet_set_event_context(smb_conn->packet, conn->event.ctx);
146 packet_set_fde(smb_conn->packet, conn->event.fde);
147 packet_set_serialise(smb_conn->packet);
148 packet_set_initial_read(smb_conn->packet, 4);
150 smb_conn->lp_ctx = conn->lp_ctx;
151 smb_conn->connection = conn;
152 conn->private_data = smb_conn;
154 smb_conn->statistics.connect_time = timeval_current();
156 smbsrv_management_init(smb_conn);
158 irpc_add_name(conn->msg_ctx, "smb_server");
160 if (!NT_STATUS_IS_OK(share_get_context_by_name(smb_conn, lpcfg_share_backend(smb_conn->lp_ctx),
161 smb_conn->connection->event.ctx,
162 smb_conn->lp_ctx, &(smb_conn->share_context)))) {
163 smbsrv_terminate_connection(smb_conn, "share_init failed!");
164 return;
168 static const struct stream_server_ops smb_stream_ops = {
169 .name = "smbsrv",
170 .accept_connection = smbsrv_accept,
171 .recv_handler = smbsrv_recv,
172 .send_handler = smbsrv_send,
176 setup a listening socket on all the SMB ports for a particular address
178 _PUBLIC_ NTSTATUS smbsrv_add_socket(TALLOC_CTX *mem_ctx,
179 struct tevent_context *event_context,
180 struct loadparm_context *lp_ctx,
181 const struct model_ops *model_ops,
182 const char *address,
183 void *process_context)
185 const char **ports = lpcfg_smb_ports(lp_ctx);
186 int i;
187 NTSTATUS status;
189 for (i=0;ports[i];i++) {
190 uint16_t port = atoi(ports[i]);
191 if (port == 0) continue;
192 status = stream_setup_socket(mem_ctx, event_context, lp_ctx,
193 model_ops, &smb_stream_ops,
194 "ip", address, &port,
195 lpcfg_socket_options(lp_ctx),
196 NULL, process_context);
197 NT_STATUS_NOT_OK_RETURN(status);
200 return NT_STATUS_OK;