/*
Unix SMB/CIFS implementation.
process incoming packets - main loop
- Copyright (C) Andrew Tridgell 1992-2003
- Copyright (C) James J Myers 2003 <myersjj@samba.org>
- Copyright (C) Stefan Metzmacher 2004
+ Copyright (C) Andrew Tridgell 2004-2005
+ Copyright (C) Stefan Metzmacher 2004-2005
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
+ the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
-#include "events.h"
-#include "system/time.h"
-#include "dlinklist.h"
+#include "smbd/service_task.h"
+#include "smbd/service_stream.h"
+#include "smbd/service.h"
#include "smb_server/smb_server.h"
-
-
-/*
- send an oplock break request to a client
-*/
-BOOL req_send_oplock_break(struct smbsrv_tcon *tcon, uint16_t fnum, uint8_t level)
-{
- struct smbsrv_request *req;
-
- req = init_smb_request(tcon->smb_conn);
-
- req_setup_reply(req, 8, 0);
-
- SCVAL(req->out.hdr,HDR_COM,SMBlockingX);
- SSVAL(req->out.hdr,HDR_TID,tcon->cnum);
- SSVAL(req->out.hdr,HDR_PID,0xFFFF);
- SSVAL(req->out.hdr,HDR_UID,0);
- SSVAL(req->out.hdr,HDR_MID,0xFFFF);
- SCVAL(req->out.hdr,HDR_FLG,0);
- SSVAL(req->out.hdr,HDR_FLG2,0);
-
- SSVAL(req->out.vwv, VWV(0), SMB_CHAIN_NONE);
- SSVAL(req->out.vwv, VWV(1), 0);
- SSVAL(req->out.vwv, VWV(2), fnum);
- SCVAL(req->out.vwv, VWV(3), LOCKING_ANDX_OPLOCK_RELEASE);
- SCVAL(req->out.vwv, VWV(3)+1, level);
- SIVAL(req->out.vwv, VWV(4), 0);
- SSVAL(req->out.vwv, VWV(6), 0);
- SSVAL(req->out.vwv, VWV(7), 0);
-
- req_send_reply(req);
- return True;
-}
-
-
-static void construct_reply(struct smbsrv_request *req);
-
-/****************************************************************************
-receive a SMB request header from the wire, forming a request_context
-from the result
-****************************************************************************/
-static NTSTATUS receive_smb_request(struct smbsrv_connection *smb_conn, struct timeval t)
+#include "smb_server/service_smb_proto.h"
+#include "lib/messaging/irpc.h"
+#include "lib/stream/packet.h"
+#include "libcli/smb2/smb2.h"
+#include "smb_server/smb2/smb2_server.h"
+#include "system/network.h"
+#include "lib/socket/netif.h"
+#include "param/share.h"
+#include "dsdb/samdb/samdb.h"
+#include "param/param.h"
+
+static NTSTATUS smbsrv_recv_generic_request(void *private, DATA_BLOB blob)
{
NTSTATUS status;
- ssize_t len;
- struct smbsrv_request *req;
- size_t nread;
-
- /* allocate the request if needed */
- if (smb_conn->partial_req == NULL) {
- req = init_smb_request(smb_conn);
- if (req == NULL) {
- return NT_STATUS_NO_MEMORY;
- }
+ struct smbsrv_connection *smb_conn = talloc_get_type(private, struct smbsrv_connection);
+ uint32_t protocol_version;
- req->in.buffer = talloc_array_p(req, char, NBT_HDR_SIZE);
- if (req->in.buffer == NULL) {
- talloc_free(req);
- return NT_STATUS_NO_MEMORY;
- }
- req->in.size = 0;
- smb_conn->partial_req = req;
- }
-
- req = smb_conn->partial_req;
-
- /* read in the header */
- if (req->in.size < NBT_HDR_SIZE) {
- status = socket_recv(smb_conn->connection->socket,
- req->in.buffer + req->in.size,
- NBT_HDR_SIZE - req->in.size,
- &nread, 0);
- if (NT_STATUS_IS_ERR(status)) {
- return status;
- }
- if (nread == 0) {
- return NT_STATUS_OK;
- }
- req->in.size += nread;
-
- /* when we have a full NBT header, then allocate the packet */
- if (req->in.size == NBT_HDR_SIZE) {
- len = smb_len(req->in.buffer) + NBT_HDR_SIZE;
- req->in.buffer = talloc_realloc(req, req->in.buffer, len);
- if (req->in.buffer == NULL) {
- return NT_STATUS_NO_MEMORY;
- }
- } else {
- return NT_STATUS_OK;
- }
- }
-
- /* read in the main packet */
- len = smb_len(req->in.buffer) + NBT_HDR_SIZE;
-
- status = socket_recv(smb_conn->connection->socket,
- req->in.buffer + req->in.size,
- len - req->in.size,
- &nread, 0);
- if (NT_STATUS_IS_ERR(status)) {
- return status;
- }
- if (nread == 0) {
- return NT_STATUS_OK;
+ /* see if its a special NBT packet */
+ if (CVAL(blob.data,0) != 0) {
+ status = smbsrv_init_smb_connection(smb_conn, smb_conn->lp_ctx);
+ NT_STATUS_NOT_OK_RETURN(status);
+ packet_set_callback(smb_conn->packet, smbsrv_recv_smb_request);
+ return smbsrv_recv_smb_request(smb_conn, blob);
}
- req->in.size += nread;
-
- if (req->in.size != len) {
+ if (blob.length < (NBT_HDR_SIZE + MIN_SMB_SIZE)) {
+ DEBUG(2,("Invalid SMB packet length count %ld\n", (long)blob.length));
+ smbsrv_terminate_connection(smb_conn, "Invalid SMB packet");
return NT_STATUS_OK;
}
- /* we have a full packet */
- req->request_time = t;
- req->chained_fnum = -1;
- req->in.allocated = req->in.size;
- req->in.hdr = req->in.buffer + NBT_HDR_SIZE;
- req->in.vwv = req->in.hdr + HDR_VWV;
- req->in.wct = CVAL(req->in.hdr, HDR_WCT);
- if (req->in.vwv + VWV(req->in.wct) <= req->in.buffer + req->in.size) {
- req->in.data = req->in.vwv + VWV(req->in.wct) + 2;
- req->in.data_size = SVAL(req->in.vwv, VWV(req->in.wct));
-
- /* the bcc length is only 16 bits, but some packets
- (such as SMBwriteX) can be much larger than 64k. We
- detect this by looking for a large non-chained NBT
- packet (at least 64k bigger than what is
- specified). If it is detected then the NBT size is
- used instead of the bcc size */
- if (req->in.data_size + 0x10000 <=
- req->in.size - PTR_DIFF(req->in.data, req->in.buffer) &&
- (req->in.wct < 1 || SVAL(req->in.vwv, VWV(0)) == SMB_CHAIN_NONE)) {
- /* its an oversized packet! fun for all the family */
- req->in.data_size = req->in.size - PTR_DIFF(req->in.data,req->in.buffer);
- }
+ protocol_version = IVAL(blob.data, NBT_HDR_SIZE);
+
+ switch (protocol_version) {
+ case SMB_MAGIC:
+ status = smbsrv_init_smb_connection(smb_conn, smb_conn->lp_ctx);
+ NT_STATUS_NOT_OK_RETURN(status);
+ packet_set_callback(smb_conn->packet, smbsrv_recv_smb_request);
+ return smbsrv_recv_smb_request(smb_conn, blob);
+ case SMB2_MAGIC:
+ if (lp_srv_maxprotocol(smb_conn->lp_ctx) < PROTOCOL_SMB2) break;
+ status = smbsrv_init_smb2_connection(smb_conn);
+ NT_STATUS_NOT_OK_RETURN(status);
+ packet_set_callback(smb_conn->packet, smbsrv_recv_smb2_request);
+ return smbsrv_recv_smb2_request(smb_conn, blob);
}
- smb_conn->partial_req = NULL;
-
- construct_reply(req);
-
+ DEBUG(2,("Invalid SMB packet: protocol prefix: 0x%08X\n", protocol_version));
+ smbsrv_terminate_connection(smb_conn, "NON-SMB packet");
return NT_STATUS_OK;
}
/*
- These flags determine some of the permissions required to do an operation
-*/
-#define AS_USER (1<<0)
-
-/*
- define a list of possible SMB messages and their corresponding
- functions. Any message that has a NULL function is unimplemented -
- please feel free to contribute implementations!
+ close the socket and shutdown a server_context
*/
-static const struct smb_message_struct
+void smbsrv_terminate_connection(struct smbsrv_connection *smb_conn, const char *reason)
{
- const char *name;
- void (*fn)(struct smbsrv_request *);
- int flags;
+ stream_terminate_connection(smb_conn->connection, reason);
}
- smb_messages[256] = {
-/* 0x00 */ { "SMBmkdir",reply_mkdir,AS_USER},
-/* 0x01 */ { "SMBrmdir",reply_rmdir,AS_USER},
-/* 0x02 */ { "SMBopen",reply_open,AS_USER},
-/* 0x03 */ { "SMBcreate",reply_mknew,AS_USER},
-/* 0x04 */ { "SMBclose",reply_close,AS_USER},
-/* 0x05 */ { "SMBflush",reply_flush,AS_USER},
-/* 0x06 */ { "SMBunlink",reply_unlink,AS_USER},
-/* 0x07 */ { "SMBmv",reply_mv,AS_USER},
-/* 0x08 */ { "SMBgetatr",reply_getatr,AS_USER},
-/* 0x09 */ { "SMBsetatr",reply_setatr,AS_USER},
-/* 0x0a */ { "SMBread",reply_read,AS_USER},
-/* 0x0b */ { "SMBwrite",reply_write,AS_USER},
-/* 0x0c */ { "SMBlock",reply_lock,AS_USER},
-/* 0x0d */ { "SMBunlock",reply_unlock,AS_USER},
-/* 0x0e */ { "SMBctemp",reply_ctemp,AS_USER },
-/* 0x0f */ { "SMBmknew",reply_mknew,AS_USER},
-/* 0x10 */ { "SMBchkpth",reply_chkpth,AS_USER},
-/* 0x11 */ { "SMBexit",reply_exit,0},
-/* 0x12 */ { "SMBlseek",reply_lseek,AS_USER},
-/* 0x13 */ { "SMBlockread",reply_lockread,AS_USER},
-/* 0x14 */ { "SMBwriteunlock",reply_writeunlock,AS_USER},
-/* 0x15 */ { NULL, NULL, 0 },
-/* 0x16 */ { NULL, NULL, 0 },
-/* 0x17 */ { NULL, NULL, 0 },
-/* 0x18 */ { NULL, NULL, 0 },
-/* 0x19 */ { NULL, NULL, 0 },
-/* 0x1a */ { "SMBreadbraw",reply_readbraw,AS_USER},
-/* 0x1b */ { "SMBreadBmpx",reply_readbmpx,AS_USER},
-/* 0x1c */ { "SMBreadBs",NULL,0 },
-/* 0x1d */ { "SMBwritebraw",reply_writebraw,AS_USER},
-/* 0x1e */ { "SMBwriteBmpx",reply_writebmpx,AS_USER},
-/* 0x1f */ { "SMBwriteBs",reply_writebs,AS_USER},
-/* 0x20 */ { "SMBwritec",NULL,0},
-/* 0x21 */ { NULL, NULL, 0 },
-/* 0x22 */ { "SMBsetattrE",reply_setattrE,AS_USER},
-/* 0x23 */ { "SMBgetattrE",reply_getattrE,AS_USER},
-/* 0x24 */ { "SMBlockingX",reply_lockingX,AS_USER},
-/* 0x25 */ { "SMBtrans",reply_trans,AS_USER},
-/* 0x26 */ { "SMBtranss",NULL,AS_USER},
-/* 0x27 */ { "SMBioctl",reply_ioctl,0},
-/* 0x28 */ { "SMBioctls",NULL,AS_USER},
-/* 0x29 */ { "SMBcopy",reply_copy,AS_USER},
-/* 0x2a */ { "SMBmove",NULL,AS_USER},
-/* 0x2b */ { "SMBecho",reply_echo,0},
-/* 0x2c */ { "SMBwriteclose",reply_writeclose,AS_USER},
-/* 0x2d */ { "SMBopenX",reply_open_and_X,AS_USER},
-/* 0x2e */ { "SMBreadX",reply_read_and_X,AS_USER},
-/* 0x2f */ { "SMBwriteX",reply_write_and_X,AS_USER},
-/* 0x30 */ { NULL, NULL, 0 },
-/* 0x31 */ { NULL, NULL, 0 },
-/* 0x32 */ { "SMBtrans2", reply_trans2, AS_USER},
-/* 0x33 */ { "SMBtranss2", reply_transs2, AS_USER},
-/* 0x34 */ { "SMBfindclose", reply_findclose,AS_USER},
-/* 0x35 */ { "SMBfindnclose", reply_findnclose, AS_USER},
-/* 0x36 */ { NULL, NULL, 0 },
-/* 0x37 */ { NULL, NULL, 0 },
-/* 0x38 */ { NULL, NULL, 0 },
-/* 0x39 */ { NULL, NULL, 0 },
-/* 0x3a */ { NULL, NULL, 0 },
-/* 0x3b */ { NULL, NULL, 0 },
-/* 0x3c */ { NULL, NULL, 0 },
-/* 0x3d */ { NULL, NULL, 0 },
-/* 0x3e */ { NULL, NULL, 0 },
-/* 0x3f */ { NULL, NULL, 0 },
-/* 0x40 */ { NULL, NULL, 0 },
-/* 0x41 */ { NULL, NULL, 0 },
-/* 0x42 */ { NULL, NULL, 0 },
-/* 0x43 */ { NULL, NULL, 0 },
-/* 0x44 */ { NULL, NULL, 0 },
-/* 0x45 */ { NULL, NULL, 0 },
-/* 0x46 */ { NULL, NULL, 0 },
-/* 0x47 */ { NULL, NULL, 0 },
-/* 0x48 */ { NULL, NULL, 0 },
-/* 0x49 */ { NULL, NULL, 0 },
-/* 0x4a */ { NULL, NULL, 0 },
-/* 0x4b */ { NULL, NULL, 0 },
-/* 0x4c */ { NULL, NULL, 0 },
-/* 0x4d */ { NULL, NULL, 0 },
-/* 0x4e */ { NULL, NULL, 0 },
-/* 0x4f */ { NULL, NULL, 0 },
-/* 0x50 */ { NULL, NULL, 0 },
-/* 0x51 */ { NULL, NULL, 0 },
-/* 0x52 */ { NULL, NULL, 0 },
-/* 0x53 */ { NULL, NULL, 0 },
-/* 0x54 */ { NULL, NULL, 0 },
-/* 0x55 */ { NULL, NULL, 0 },
-/* 0x56 */ { NULL, NULL, 0 },
-/* 0x57 */ { NULL, NULL, 0 },
-/* 0x58 */ { NULL, NULL, 0 },
-/* 0x59 */ { NULL, NULL, 0 },
-/* 0x5a */ { NULL, NULL, 0 },
-/* 0x5b */ { NULL, NULL, 0 },
-/* 0x5c */ { NULL, NULL, 0 },
-/* 0x5d */ { NULL, NULL, 0 },
-/* 0x5e */ { NULL, NULL, 0 },
-/* 0x5f */ { NULL, NULL, 0 },
-/* 0x60 */ { NULL, NULL, 0 },
-/* 0x61 */ { NULL, NULL, 0 },
-/* 0x62 */ { NULL, NULL, 0 },
-/* 0x63 */ { NULL, NULL, 0 },
-/* 0x64 */ { NULL, NULL, 0 },
-/* 0x65 */ { NULL, NULL, 0 },
-/* 0x66 */ { NULL, NULL, 0 },
-/* 0x67 */ { NULL, NULL, 0 },
-/* 0x68 */ { NULL, NULL, 0 },
-/* 0x69 */ { NULL, NULL, 0 },
-/* 0x6a */ { NULL, NULL, 0 },
-/* 0x6b */ { NULL, NULL, 0 },
-/* 0x6c */ { NULL, NULL, 0 },
-/* 0x6d */ { NULL, NULL, 0 },
-/* 0x6e */ { NULL, NULL, 0 },
-/* 0x6f */ { NULL, NULL, 0 },
-/* 0x70 */ { "SMBtcon",reply_tcon,0},
-/* 0x71 */ { "SMBtdis",reply_tdis,0},
-/* 0x72 */ { "SMBnegprot",reply_negprot,0},
-/* 0x73 */ { "SMBsesssetupX",reply_sesssetup,0},
-/* 0x74 */ { "SMBulogoffX", reply_ulogoffX, 0}, /* ulogoff doesn't give a valid TID */
-/* 0x75 */ { "SMBtconX",reply_tcon_and_X,0},
-/* 0x76 */ { NULL, NULL, 0 },
-/* 0x77 */ { NULL, NULL, 0 },
-/* 0x78 */ { NULL, NULL, 0 },
-/* 0x79 */ { NULL, NULL, 0 },
-/* 0x7a */ { NULL, NULL, 0 },
-/* 0x7b */ { NULL, NULL, 0 },
-/* 0x7c */ { NULL, NULL, 0 },
-/* 0x7d */ { NULL, NULL, 0 },
-/* 0x7e */ { NULL, NULL, 0 },
-/* 0x7f */ { NULL, NULL, 0 },
-/* 0x80 */ { "SMBdskattr",reply_dskattr,AS_USER},
-/* 0x81 */ { "SMBsearch",reply_search,AS_USER},
-/* 0x82 */ { "SMBffirst",reply_search,AS_USER},
-/* 0x83 */ { "SMBfunique",reply_search,AS_USER},
-/* 0x84 */ { "SMBfclose",reply_fclose,AS_USER},
-/* 0x85 */ { NULL, NULL, 0 },
-/* 0x86 */ { NULL, NULL, 0 },
-/* 0x87 */ { NULL, NULL, 0 },
-/* 0x88 */ { NULL, NULL, 0 },
-/* 0x89 */ { NULL, NULL, 0 },
-/* 0x8a */ { NULL, NULL, 0 },
-/* 0x8b */ { NULL, NULL, 0 },
-/* 0x8c */ { NULL, NULL, 0 },
-/* 0x8d */ { NULL, NULL, 0 },
-/* 0x8e */ { NULL, NULL, 0 },
-/* 0x8f */ { NULL, NULL, 0 },
-/* 0x90 */ { NULL, NULL, 0 },
-/* 0x91 */ { NULL, NULL, 0 },
-/* 0x92 */ { NULL, NULL, 0 },
-/* 0x93 */ { NULL, NULL, 0 },
-/* 0x94 */ { NULL, NULL, 0 },
-/* 0x95 */ { NULL, NULL, 0 },
-/* 0x96 */ { NULL, NULL, 0 },
-/* 0x97 */ { NULL, NULL, 0 },
-/* 0x98 */ { NULL, NULL, 0 },
-/* 0x99 */ { NULL, NULL, 0 },
-/* 0x9a */ { NULL, NULL, 0 },
-/* 0x9b */ { NULL, NULL, 0 },
-/* 0x9c */ { NULL, NULL, 0 },
-/* 0x9d */ { NULL, NULL, 0 },
-/* 0x9e */ { NULL, NULL, 0 },
-/* 0x9f */ { NULL, NULL, 0 },
-/* 0xa0 */ { "SMBnttrans", reply_nttrans, AS_USER},
-/* 0xa1 */ { "SMBnttranss", reply_nttranss, AS_USER},
-/* 0xa2 */ { "SMBntcreateX", reply_ntcreate_and_X, AS_USER},
-/* 0xa3 */ { NULL, NULL, 0 },
-/* 0xa4 */ { "SMBntcancel", reply_ntcancel, 0 },
-/* 0xa5 */ { "SMBntrename", reply_ntrename, 0 },
-/* 0xa6 */ { NULL, NULL, 0 },
-/* 0xa7 */ { NULL, NULL, 0 },
-/* 0xa8 */ { NULL, NULL, 0 },
-/* 0xa9 */ { NULL, NULL, 0 },
-/* 0xaa */ { NULL, NULL, 0 },
-/* 0xab */ { NULL, NULL, 0 },
-/* 0xac */ { NULL, NULL, 0 },
-/* 0xad */ { NULL, NULL, 0 },
-/* 0xae */ { NULL, NULL, 0 },
-/* 0xaf */ { NULL, NULL, 0 },
-/* 0xb0 */ { NULL, NULL, 0 },
-/* 0xb1 */ { NULL, NULL, 0 },
-/* 0xb2 */ { NULL, NULL, 0 },
-/* 0xb3 */ { NULL, NULL, 0 },
-/* 0xb4 */ { NULL, NULL, 0 },
-/* 0xb5 */ { NULL, NULL, 0 },
-/* 0xb6 */ { NULL, NULL, 0 },
-/* 0xb7 */ { NULL, NULL, 0 },
-/* 0xb8 */ { NULL, NULL, 0 },
-/* 0xb9 */ { NULL, NULL, 0 },
-/* 0xba */ { NULL, NULL, 0 },
-/* 0xbb */ { NULL, NULL, 0 },
-/* 0xbc */ { NULL, NULL, 0 },
-/* 0xbd */ { NULL, NULL, 0 },
-/* 0xbe */ { NULL, NULL, 0 },
-/* 0xbf */ { NULL, NULL, 0 },
-/* 0xc0 */ { "SMBsplopen",reply_printopen,AS_USER },
-/* 0xc1 */ { "SMBsplwr",reply_printwrite,AS_USER},
-/* 0xc2 */ { "SMBsplclose",reply_printclose,AS_USER},
-/* 0xc3 */ { "SMBsplretq",reply_printqueue,AS_USER},
-/* 0xc4 */ { NULL, NULL, 0 },
-/* 0xc5 */ { NULL, NULL, 0 },
-/* 0xc6 */ { NULL, NULL, 0 },
-/* 0xc7 */ { NULL, NULL, 0 },
-/* 0xc8 */ { NULL, NULL, 0 },
-/* 0xc9 */ { NULL, NULL, 0 },
-/* 0xca */ { NULL, NULL, 0 },
-/* 0xcb */ { NULL, NULL, 0 },
-/* 0xcc */ { NULL, NULL, 0 },
-/* 0xcd */ { NULL, NULL, 0 },
-/* 0xce */ { NULL, NULL, 0 },
-/* 0xcf */ { NULL, NULL, 0 },
-/* 0xd0 */ { "SMBsends",reply_sends,0},
-/* 0xd1 */ { "SMBsendb",NULL,0},
-/* 0xd2 */ { "SMBfwdname",NULL,0},
-/* 0xd3 */ { "SMBcancelf",NULL,0},
-/* 0xd4 */ { "SMBgetmac",NULL,0},
-/* 0xd5 */ { "SMBsendstrt",reply_sendstrt,0},
-/* 0xd6 */ { "SMBsendend",reply_sendend,0},
-/* 0xd7 */ { "SMBsendtxt",reply_sendtxt,0},
-/* 0xd8 */ { NULL, NULL, 0 },
-/* 0xd9 */ { NULL, NULL, 0 },
-/* 0xda */ { NULL, NULL, 0 },
-/* 0xdb */ { NULL, NULL, 0 },
-/* 0xdc */ { NULL, NULL, 0 },
-/* 0xdd */ { NULL, NULL, 0 },
-/* 0xde */ { NULL, NULL, 0 },
-/* 0xdf */ { NULL, NULL, 0 },
-/* 0xe0 */ { NULL, NULL, 0 },
-/* 0xe1 */ { NULL, NULL, 0 },
-/* 0xe2 */ { NULL, NULL, 0 },
-/* 0xe3 */ { NULL, NULL, 0 },
-/* 0xe4 */ { NULL, NULL, 0 },
-/* 0xe5 */ { NULL, NULL, 0 },
-/* 0xe6 */ { NULL, NULL, 0 },
-/* 0xe7 */ { NULL, NULL, 0 },
-/* 0xe8 */ { NULL, NULL, 0 },
-/* 0xe9 */ { NULL, NULL, 0 },
-/* 0xea */ { NULL, NULL, 0 },
-/* 0xeb */ { NULL, NULL, 0 },
-/* 0xec */ { NULL, NULL, 0 },
-/* 0xed */ { NULL, NULL, 0 },
-/* 0xee */ { NULL, NULL, 0 },
-/* 0xef */ { NULL, NULL, 0 },
-/* 0xf0 */ { NULL, NULL, 0 },
-/* 0xf1 */ { NULL, NULL, 0 },
-/* 0xf2 */ { NULL, NULL, 0 },
-/* 0xf3 */ { NULL, NULL, 0 },
-/* 0xf4 */ { NULL, NULL, 0 },
-/* 0xf5 */ { NULL, NULL, 0 },
-/* 0xf6 */ { NULL, NULL, 0 },
-/* 0xf7 */ { NULL, NULL, 0 },
-/* 0xf8 */ { NULL, NULL, 0 },
-/* 0xf9 */ { NULL, NULL, 0 },
-/* 0xfa */ { NULL, NULL, 0 },
-/* 0xfb */ { NULL, NULL, 0 },
-/* 0xfc */ { NULL, NULL, 0 },
-/* 0xfd */ { NULL, NULL, 0 },
-/* 0xfe */ { NULL, NULL, 0 },
-/* 0xff */ { NULL, NULL, 0 }
-};
-/****************************************************************************
-return a string containing the function name of a SMB command
-****************************************************************************/
-static const char *smb_fn_name(uint8_t type)
+/*
+ called when a SMB socket becomes readable
+*/
+static void smbsrv_recv(struct stream_connection *conn, uint16_t flags)
{
- const char *unknown_name = "SMBunknown";
+ struct smbsrv_connection *smb_conn = talloc_get_type(conn->private,
+ struct smbsrv_connection);
- if (smb_messages[type].name == NULL)
- return unknown_name;
+ DEBUG(10,("smbsrv_recv\n"));
- return smb_messages[type].name;
+ packet_recv(smb_conn->packet);
}
-
-/****************************************************************************
- Do a switch on the message type and call the specific reply function for this
-message. Unlike earlier versions of Samba the reply functions are responsible
-for sending the reply themselves, rather than returning a size to this function
-The reply functions may also choose to delay the processing by pushing the message
-onto the message queue
-****************************************************************************/
-static void switch_message(int type, struct smbsrv_request *req)
+/*
+ called when a SMB socket becomes writable
+*/
+static void smbsrv_send(struct stream_connection *conn, uint16_t flags)
{
- int flags;
- struct smbsrv_connection *smb_conn = req->smb_conn;
- uint16_t session_tag;
-
- type &= 0xff;
-
- errno = 0;
-
- if (smb_messages[type].fn == NULL) {
- DEBUG(0,("Unknown message type %d!\n",type));
- reply_unknown(req);
- return;
- }
-
- flags = smb_messages[type].flags;
-
- req->tcon = conn_find(smb_conn, SVAL(req->in.hdr,HDR_TID));
-
- if (req->session == NULL) {
- /* setup the user context for this request if it
- hasn't already been initialised (to cope with SMB
- chaining) */
-
- /* In share mode security we must ignore the vuid. */
- if (lp_security() == SEC_SHARE) {
- session_tag = UID_FIELD_INVALID;
- } else {
- session_tag = SVAL(req->in.hdr,HDR_UID);
- }
-
- req->session = smbsrv_session_find(req->smb_conn, session_tag);
- if (req->session) {
- req->session->vuid = session_tag;
- }
- } else {
- session_tag = req->session->vuid;
- }
-
- DEBUG(3,("switch message %s (task_id %d)\n",smb_fn_name(type), smb_conn->connection->service->model_ops->get_id(req)));
-
- /* does this protocol need a valid tree connection? */
- if ((flags & AS_USER) && !req->tcon) {
- req_reply_error(req, NT_STATUS_INVALID_HANDLE);
- return;
- }
-
- /* see if the vuid is valid */
- if ((flags & AS_USER) && !req->session) {
- req_reply_error(req, NT_STATUS_DOS(ERRSRV, ERRbaduid));
- return;
- }
-
- smb_messages[type].fn(req);
+ struct smbsrv_connection *smb_conn = talloc_get_type(conn->private,
+ struct smbsrv_connection);
+ packet_queue_run(smb_conn->packet);
}
+/*
+ handle socket recv errors
+*/
+static void smbsrv_recv_error(void *private, NTSTATUS status)
+{
+ struct smbsrv_connection *smb_conn = talloc_get_type(private, struct smbsrv_connection);
+
+ smbsrv_terminate_connection(smb_conn, nt_errstr(status));
+}
-/****************************************************************************
- Construct a reply to the incoming packet.
-****************************************************************************/
-static void construct_reply(struct smbsrv_request *req)
+/*
+ initialise a server_context from a open socket and register a event handler
+ for reading from that socket
+*/
+static void smbsrv_accept(struct stream_connection *conn)
{
- uint8_t type = CVAL(req->in.hdr,HDR_COM);
+ struct smbsrv_connection *smb_conn;
- /* see if its a special NBT packet */
- if (CVAL(req->in.buffer,0) != 0) {
- reply_special(req);
- return;
- }
+ DEBUG(5,("smbsrv_accept\n"));
- /* Make sure this is an SMB packet */
- if (memcmp(req->in.hdr,"\377SMB",4) != 0) {
- DEBUG(2,("Non-SMB packet of length %d. Terminating connection\n",
- req->in.size));
- smbsrv_terminate_connection(req->smb_conn, "Non-SMB packet");
+ smb_conn = talloc_zero(conn, struct smbsrv_connection);
+ if (!smb_conn) {
+ stream_terminate_connection(conn, "out of memory");
return;
}
- if (NBT_HDR_SIZE + MIN_SMB_SIZE + 2*req->in.wct > req->in.size) {
- DEBUG(2,("Invalid SMB word count %d\n", req->in.wct));
- smbsrv_terminate_connection(req->smb_conn, "Invalid SMB packet");
+ smb_conn->packet = packet_init(smb_conn);
+ if (!smb_conn->packet) {
+ smbsrv_terminate_connection(smb_conn, "out of memory");
return;
}
+ packet_set_private(smb_conn->packet, smb_conn);
+ packet_set_socket(smb_conn->packet, conn->socket);
+ packet_set_callback(smb_conn->packet, smbsrv_recv_generic_request);
+ packet_set_full_request(smb_conn->packet, packet_full_request_nbt);
+ packet_set_error_handler(smb_conn->packet, smbsrv_recv_error);
+ packet_set_event_context(smb_conn->packet, conn->event.ctx);
+ packet_set_fde(smb_conn->packet, conn->event.fde);
+ packet_set_serialise(smb_conn->packet);
+
+ smb_conn->lp_ctx = global_loadparm;
+ smb_conn->connection = conn;
+ conn->private = smb_conn;
- if (NBT_HDR_SIZE + MIN_SMB_SIZE + 2*req->in.wct + req->in.data_size > req->in.size) {
- DEBUG(2,("Invalid SMB buffer length count %d\n", req->in.data_size));
- smbsrv_terminate_connection(req->smb_conn, "Invalid SMB packet");
- return;
- }
+ irpc_add_name(conn->msg_ctx, "smb_server");
- req->flags = CVAL(req->in.hdr, HDR_FLG);
- req->flags2 = SVAL(req->in.hdr, HDR_FLG2);
- req->smbpid = SVAL(req->in.hdr,HDR_PID);
+ smb_conn->statistics.connect_time = timeval_current();
- if (!req_signing_check_incoming(req)) {
- req_reply_error(req, NT_STATUS_ACCESS_DENIED);
+ smbsrv_management_init(smb_conn);
+
+ if (!NT_STATUS_IS_OK(share_get_context_by_name(smb_conn, lp_share_backend(smb_conn->lp_ctx),
+ smb_conn->lp_ctx, &(smb_conn->share_context)))) {
+ smbsrv_terminate_connection(smb_conn, "share_init failed!");
return;
}
-
- switch_message(type, req);
}
+static const struct stream_server_ops smb_stream_ops = {
+ .name = "smbsrv",
+ .accept_connection = smbsrv_accept,
+ .recv_handler = smbsrv_recv,
+ .send_handler = smbsrv_send,
+};
/*
- we call this when first first part of a possibly chained request has been completed
- and we need to call the 2nd part, if any
+ setup a listening socket on all the SMB ports for a particular address
*/
-void chain_reply(struct smbsrv_request *req)
+_PUBLIC_ NTSTATUS smbsrv_add_socket(struct event_context *event_context,
+ struct loadparm_context *lp_ctx,
+ const struct model_ops *model_ops,
+ const char *address)
{
- uint16_t chain_cmd, chain_offset;
- char *vwv, *data;
- uint16_t wct;
- uint16_t data_size;
-
- if (req->in.wct < 2 || req->out.wct < 2) {
- req_reply_dos_error(req, ERRSRV, ERRerror);
- return;
- }
-
- chain_cmd = CVAL(req->in.vwv, VWV(0));
- chain_offset = SVAL(req->in.vwv, VWV(1));
-
- if (chain_cmd == SMB_CHAIN_NONE) {
- /* end of chain */
- SSVAL(req->out.vwv, VWV(0), SMB_CHAIN_NONE);
- SSVAL(req->out.vwv, VWV(1), 0);
- req_send_reply(req);
- return;
- }
-
- if (chain_offset + req->in.hdr >= req->in.buffer + req->in.size) {
- goto error;
- }
-
- wct = CVAL(req->in.hdr, chain_offset);
- vwv = req->in.hdr + chain_offset + 1;
-
- if (vwv + VWV(wct) + 2 > req->in.buffer + req->in.size) {
- goto error;
- }
-
- data_size = SVAL(vwv, VWV(wct));
- data = vwv + VWV(wct) + 2;
+ const char **ports = lp_smb_ports(lp_ctx);
+ int i;
+ NTSTATUS status;
- if (data + data_size > req->in.buffer + req->in.size) {
- goto error;
+ for (i=0;ports[i];i++) {
+ uint16_t port = atoi(ports[i]);
+ if (port == 0) continue;
+ status = stream_setup_socket(event_context, lp_ctx,
+ model_ops, &smb_stream_ops,
+ "ipv4", address, &port,
+ lp_socket_options(lp_ctx),
+ NULL);
+ NT_STATUS_NOT_OK_RETURN(status);
}
- /* all seems legit */
- req->in.vwv = vwv;
- req->in.wct = wct;
- req->in.data = data;
- req->in.data_size = data_size;
- req->in.ptr = data;
-
- req->chain_count++;
-
- SSVAL(req->out.vwv, VWV(0), chain_cmd);
- SSVAL(req->out.vwv, VWV(1), req->out.size - NBT_HDR_SIZE);
-
- /* the current request in the chain might have used an async reply,
- but that doesn't mean the next element needs to */
- ZERO_STRUCTP(req->async_states);
-
- switch_message(chain_cmd, req);
- return;
-
-error:
- SSVAL(req->out.vwv, VWV(0), SMB_CHAIN_NONE);
- SSVAL(req->out.vwv, VWV(1), 0);
- req_reply_dos_error(req, ERRSRV, ERRerror);
+ return NT_STATUS_OK;
}
/*
- close the socket and shutdown a server_context
-*/
-void smbsrv_terminate_connection(struct smbsrv_connection *smb_conn, const char *reason)
+ pre-open some of our ldb databases, to prevent an explosion of memory usage
+ when we fork
+ */
+static void smbsrv_preopen_ldb(struct task_server *task)
{
- server_terminate_connection(smb_conn->connection, reason);
+ /* yes, this looks strange. It is a hack to preload the
+ schema. I'd like to share most of the ldb context with the
+ child too. That will come later */
+ talloc_free(samdb_connect(task, task->lp_ctx, NULL));
}
/*
- called on a fatal error that should cause this server to terminate
+ open the smb server sockets
*/
-static void smbsrv_exit(struct server_service *service, const char *reason)
-{
- DEBUG(1,("smbsrv_exit\n"));
- return;
-}
-
-/*
- add a socket address to the list of events, one event per port
-*/
-static void add_socket(struct server_service *service,
- const struct model_ops *model_ops,
- struct socket_context *socket_ctx,
- struct ipv4_addr *ifip)
-{
- const char **ports = lp_smb_ports();
- int i;
- char *ip_str = talloc_strdup(service, sys_inet_ntoa(*ifip));
+static void smbsrv_task_init(struct task_server *task)
+{
+ NTSTATUS status;
- for (i=0;ports[i];i++) {
- uint16_t port = atoi(ports[i]);
- if (port == 0) continue;
- service_setup_socket(service, model_ops, "ipv4", ip_str, &port);
- }
+ task_server_set_title(task, "task[smbsrv]");
- talloc_free(ip_str);
-}
+ if (lp_interfaces(task->lp_ctx) && lp_bind_interfaces_only(task->lp_ctx)) {
+ int num_interfaces;
+ int i;
+ struct interface *ifaces;
-/****************************************************************************
- Open the socket communication.
-****************************************************************************/
-static void smbsrv_init(struct server_service *service, const struct model_ops *model_ops)
-{
- DEBUG(1,("smbsrv_init\n"));
+ load_interfaces(task, lp_interfaces(task->lp_ctx), &ifaces);
- if (lp_interfaces() && lp_bind_interfaces_only()) {
- int num_interfaces = iface_count();
- int i;
+ num_interfaces = iface_count(ifaces);
/* We have been given an interfaces line, and been
told to only bind to those interfaces. Create a
socket per interface and bind to only these.
*/
for(i = 0; i < num_interfaces; i++) {
- struct ipv4_addr *ifip = iface_n_ip(i);
-
- if (ifip == NULL) {
- DEBUG(0,("open_sockets_smbd: interface %d has NULL IP address !\n", i));
- continue;
- }
-
- add_socket(service, model_ops, NULL, ifip);
+ const char *address = iface_n_ip(ifaces, i);
+ status = smbsrv_add_socket(task->event_ctx, task->lp_ctx, task->model_ops, address);
+ if (!NT_STATUS_IS_OK(status)) goto failed;
}
} else {
- struct ipv4_addr ifip;
/* Just bind to lp_socket_address() (usually 0.0.0.0) */
- ifip = interpret_addr2(lp_socket_address());
- add_socket(service, model_ops, NULL, &ifip);
+ status = smbsrv_add_socket(task->event_ctx, task->lp_ctx, task->model_ops,
+ lp_socket_address(task->lp_ctx));
+ if (!NT_STATUS_IS_OK(status)) goto failed;
}
-}
-
-/*
- called when a SMB socket becomes readable
-*/
-static void smbsrv_recv(struct server_connection *conn, struct timeval t, uint16_t flags)
-{
- struct smbsrv_connection *smb_conn = conn->private_data;
- NTSTATUS status;
- DEBUG(10,("smbsrv_recv\n"));
-
- status = receive_smb_request(smb_conn, t);
- if (NT_STATUS_IS_ERR(status)) {
- conn->event.fde->flags = 0;
- smbsrv_terminate_connection(smb_conn, nt_errstr(status));
- return;
- }
-
- /* free up temporary memory */
- lp_talloc_free();
-}
-
-/*
- called when a SMB socket becomes writable
-*/
-static void smbsrv_send(struct server_connection *conn, struct timeval t, uint16_t flags)
-{
- struct smbsrv_connection *smb_conn = conn->private_data;
-
- while (smb_conn->pending_send) {
- struct smbsrv_request *req = smb_conn->pending_send;
- DATA_BLOB blob;
- NTSTATUS status;
- size_t sendlen;
-
- blob.data = req->out.buffer;
- blob.length = req->out.size;
-
- /* send as much of this request as we can */
- status = socket_send(conn->socket, &blob, &sendlen, 0);
- if (NT_STATUS_IS_ERR(status)) {
- smbsrv_terminate_connection(req->smb_conn, nt_errstr(status));
- return;
- }
- if (sendlen == 0) {
- break;
- }
-
- req->out.buffer += sendlen;
- req->out.size -= sendlen;
-
- /* is the whole request gone? */
- if (req->out.size == 0) {
- DLIST_REMOVE(smb_conn->pending_send, req);
- req_destroy(req);
- }
- }
-
- /* if no more requests are pending to be sent then
- we should stop select for write */
- if (smb_conn->pending_send == NULL) {
- conn->event.fde->flags &= ~EVENT_FD_WRITE;
- }
-}
-
-/*
- called when connection is idle
-*/
-static void smbsrv_idle(struct server_connection *conn, struct timeval t)
-{
- DEBUG(10,("smbsrv_idle: not implemented!\n"));
- conn->event.idle->next_event = timeval_add(&t, 5, 0);
- return;
-}
-
-static void smbsrv_close(struct server_connection *conn, const char *reason)
-{
- struct smbsrv_connection *smb_conn = conn->private_data;
-
- DEBUG(5,("smbsrv_close: %s\n",reason));
-
- conn_close_all(smb_conn);
-
- talloc_free(smb_conn);
+ smbsrv_preopen_ldb(task);
return;
+failed:
+ task_server_terminate(task, "Failed to startup smb server task");
}
/*
- process a message from an SMB socket while still processing a
- previous message this is used by backends who need to ensure that
- new messages from clients are still processed while they are
- performing long operations
+ called on startup of the smb server service It's job is to start
+ listening on all configured sockets
*/
-void smbd_process_async(struct smbsrv_connection *smb_conn)
-{
- NTSTATUS status;
-
- status = receive_smb_request(smb_conn, timeval_current());
- if (NT_STATUS_IS_ERR(status)) {
- smbsrv_terminate_connection(smb_conn, nt_errstr(status));
- }
-}
-
-
-/*
- initialise a server_context from a open socket and register a event handler
- for reading from that socket
-*/
-void smbsrv_accept(struct server_connection *conn)
-{
- struct smbsrv_connection *smb_conn;
- int fd;
-
- DEBUG(5,("smbsrv_accept\n"));
-
- smb_conn = talloc_zero_p(conn, struct smbsrv_connection);
- if (!smb_conn) return;
-
- smb_conn->pid = getpid();
-
- sub_set_context(&smb_conn->substitute);
-
- /* now initialise a few default values associated with this smb socket */
- smb_conn->negotiate.max_send = 0xFFFF;
-
- /* this is the size that w2k uses, and it appears to be important for
- good performance */
- smb_conn->negotiate.max_recv = lp_max_xmit();
-
- smb_conn->negotiate.zone_offset = get_time_zone(time(NULL));
-
- smb_conn->sessions.next_vuid = VUID_OFFSET;
-
- srv_init_signing(smb_conn);
-
- conn_init(smb_conn);
-
- smb_conn->connection = conn;
-
- conn->private_data = smb_conn;
-
- fd = socket_get_fd(conn->socket);
- set_blocking(fd, True);
-
- /* setup the DCERPC server subsystem */
- dcesrv_init_context(smb_conn, &smb_conn->dcesrv);
-
- return;
-}
-
-static const struct server_service_ops smb_server_ops = {
- .name = "smb",
- .service_init = smbsrv_init,
- .accept_connection = smbsrv_accept,
- .recv_handler = smbsrv_recv,
- .send_handler = smbsrv_send,
- .idle_handler = smbsrv_idle,
- .close_connection = smbsrv_close,
- .service_exit = smbsrv_exit,
-};
-
-const struct server_service_ops *smbsrv_get_ops(void)
-{
- return &smb_server_ops;
+static NTSTATUS smbsrv_init(struct event_context *event_context,
+ struct loadparm_context *lp_ctx,
+ const struct model_ops *model_ops)
+{
+ return task_server_startup(event_context, lp_ctx, "smb",
+ model_ops, smbsrv_task_init);
}
+/* called at smbd startup - register ourselves as a server service */
NTSTATUS server_service_smb_init(void)
{
- return NT_STATUS_OK;
+ return register_server_service("smb", smbsrv_init);
}
git.samba.org / ira / wip.git / blobdiff