SMBD_OBJ_MAIN = smbd/server.o
+SMB_OBJS = @SMB_OBJS@
+SMB_LIBS = @SMB_LIBS@
+
NTVFS_OBJS = @NTVFS_OBJS@
NTVFS_LIBS = @NTVFS_LIBS@
DCERPC_OBJS = @DCERPC_OBJS@
DCERPC_LIBS = @DCERPC_LIBS@
-SMBD_OBJ_SRV = smbd/connection.o \
- smbd/session.o smbd/process.o \
- smbd/password.o smbd/conn.o \
- smbd/negprot.o smbd/request.o \
- smbd/reply.o smbd/sesssetup.o \
- smbd/trans2.o smbd/search.o smbd/nttrans.o \
+SMBD_OBJ_SRV = smbd/process.o \
lib/server_mutex.o \
- smbd/build_options.o smbd/service.o \
- smbd/rewrite.o $(DCERPC_OBJS) \
- $(NTVFS_OBJS) @SMBD_EXTRA_OBJS@
+ smbd/build_options.o \
+ smbd/rewrite.o \
+ $(DCERPC_OBJS) $(SMB_OBJS) $(NTVFS_OBJS) @SMBD_EXTRA_OBJS@
PROCESS_MODEL_OBJS = @PROCESS_MODEL_OBJS@
PROCESS_MODEL_LIBS = @PROCESS_MODEL_LIBS@
sinclude(lib/iconv.m4)
sinclude(smbd/process_model.m4)
+sinclude(smb_server/config.m4)
sinclude(ntvfs/config.m4)
sinclude(rpc_server/config.m4)
-########################################################
-# Compile with MySQL support?
-AM_PATH_MYSQL([0.11.0],[MODULE_MYSQL=bin/mysql.so],[MODULE_MYSQL=])
-CFLAGS="$CFLAGS $MYSQL_CFLAGS"
-AC_SUBST(MODULE_MYSQL)
-
-########################################################
-# Compile with XML support?
-AM_PATH_XML2([2.0.0],[MODULE_XML=bin/xml.so],[MODULE_XML=])
-CFLAGS="$CFLAGS $XML_CFLAGS"
-AC_SUBST(MODULE_XML)
--- /dev/null
+dnl # SMB server subsystem
+
+SMB_SUBSYSTEM(SMB,smb_server/smb_server.o,
+ [smb_server/conn.o ]\
+ [smb_server/connection.o]\
+ [smb_server/negprot.o]\
+ [smb_server/nttrans.o]\
+ [smb_server/password.o]\
+ [smb_server/reply.o]\
+ [smb_server/request.o]\
+ [smb_server/search.o]\
+ [smb_server/service.o]\
+ [smb_server/session.o]\
+ [smb_server/sesssetup.o]\
+ [smb_server/trans2.o],
+ smb_server/smb_server_public_proto.h)
--- /dev/null
+/*
+ Unix SMB/CIFS implementation.
+ process incoming packets - main loop
+ Copyright (C) Andrew Tridgell 1992-2003
+ Copyright (C) James J Myers 2003 <myersjj@samba.org>
+
+ 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
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ 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.
+*/
+
+#include "includes.h"
+
+
+/*
+ send an oplock break request to a client
+*/
+BOOL req_send_oplock_break(struct tcon_context *conn, uint16 fnum, uint8 level)
+{
+ struct request_context *req;
+
+ req = init_smb_request(conn->smb);
+
+ req_setup_reply(req, 8, 0);
+
+ SCVAL(req->out.hdr,HDR_COM,SMBlockingX);
+ SSVAL(req->out.hdr,HDR_TID,conn->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);
+ SSVAL(req->out.vwv, VWV(3), 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;
+}
+
+/****************************************************************************
+receive a SMB request from the wire, forming a request_context from the result
+****************************************************************************/
+static struct request_context *receive_smb_request(struct server_context *smb)
+{
+ ssize_t len, len2;
+ char header[4];
+ struct request_context *req;
+
+ len = read_data(smb->socket.fd, header, 4);
+ if (len != 4) {
+ return NULL;
+ }
+
+ len = smb_len(header);
+
+ req = init_smb_request(smb);
+
+ GetTimeOfDay(&req->request_time);
+ req->chained_fnum = -1;
+
+ /* allocate the incoming buffer at the right size */
+ req->in.buffer = talloc(req->mem_ctx, len + NBT_HDR_SIZE);
+
+ /* fill in the already received header */
+ memcpy(req->in.buffer, header, 4);
+
+ len2 = read_data(smb->socket.fd, req->in.buffer + NBT_HDR_SIZE, len);
+ if (len2 != len) {
+ return NULL;
+ }
+
+ /* fill in the rest of the req->in structure */
+ req->in.size = len + NBT_HDR_SIZE;
+ 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);
+ }
+ }
+
+ return req;
+}
+
+/*
+ setup the user_ctx element of a request
+*/
+static void setup_user_context(struct request_context *req)
+{
+ struct user_context *ctx;
+
+ ctx = talloc(req->mem_ctx, sizeof(*ctx));
+ ctx->vuid = SVAL(req->in.hdr, HDR_UID);
+ ctx->vuser = get_valid_user_struct(req->smb, ctx->vuid);
+
+ req->user_ctx = ctx;
+}
+
+
+/*
+These flags determine some of the permissions required to do an operation
+
+Note that I don't set NEED_WRITE on some write operations because they
+are used by some brain-dead clients when printing, and I don't want to
+force write permissions on print services.
+*/
+#define AS_USER (1<<0)
+#define NEED_WRITE (1<<1)
+#define TIME_INIT (1<<2)
+#define CAN_IPC (1<<3)
+#define AS_GUEST (1<<5)
+#define USE_MUTEX (1<<7)
+
+/*
+ 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!
+*/
+static const struct smb_message_struct
+{
+ const char *name;
+ void (*fn)(struct request_context *);
+ int flags;
+}
+ smb_messages[256] = {
+/* 0x00 */ { "SMBmkdir",reply_mkdir,AS_USER | NEED_WRITE},
+/* 0x01 */ { "SMBrmdir",reply_rmdir,AS_USER | NEED_WRITE},
+/* 0x02 */ { "SMBopen",reply_open,AS_USER },
+/* 0x03 */ { "SMBcreate",reply_mknew,AS_USER},
+/* 0x04 */ { "SMBclose",reply_close,AS_USER | CAN_IPC },
+/* 0x05 */ { "SMBflush",reply_flush,AS_USER},
+/* 0x06 */ { "SMBunlink",reply_unlink,AS_USER | NEED_WRITE },
+/* 0x07 */ { "SMBmv",reply_mv,AS_USER | NEED_WRITE },
+/* 0x08 */ { "SMBgetatr",reply_getatr,AS_USER},
+/* 0x09 */ { "SMBsetatr",reply_setatr,AS_USER | NEED_WRITE},
+/* 0x0a */ { "SMBread",reply_read,AS_USER},
+/* 0x0b */ { "SMBwrite",reply_write,AS_USER | CAN_IPC },
+/* 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 | NEED_WRITE },
+/* 0x23 */ { "SMBgetattrE",reply_getattrE,AS_USER },
+/* 0x24 */ { "SMBlockingX",reply_lockingX,AS_USER },
+/* 0x25 */ { "SMBtrans",reply_trans,AS_USER | CAN_IPC },
+/* 0x26 */ { "SMBtranss",NULL,AS_USER | CAN_IPC},
+/* 0x27 */ { "SMBioctl",reply_ioctl,0},
+/* 0x28 */ { "SMBioctls",NULL,AS_USER},
+/* 0x29 */ { "SMBcopy",reply_copy,AS_USER | NEED_WRITE },
+/* 0x2a */ { "SMBmove",NULL,AS_USER | NEED_WRITE },
+/* 0x2b */ { "SMBecho",reply_echo,0},
+/* 0x2c */ { "SMBwriteclose",reply_writeclose,AS_USER},
+/* 0x2d */ { "SMBopenX",reply_open_and_X,AS_USER | CAN_IPC },
+/* 0x2e */ { "SMBreadX",reply_read_and_X,AS_USER | CAN_IPC },
+/* 0x2f */ { "SMBwriteX",reply_write_and_X,AS_USER | CAN_IPC },
+/* 0x30 */ { NULL, NULL, 0 },
+/* 0x31 */ { NULL, NULL, 0 },
+/* 0x32 */ { "SMBtrans2", reply_trans2, AS_USER | CAN_IPC },
+/* 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,USE_MUTEX},
+/* 0x71 */ { "SMBtdis",reply_tdis,0},
+/* 0x72 */ { "SMBnegprot",reply_negprot,USE_MUTEX},
+/* 0x73 */ { "SMBsesssetupX",reply_sesssetup,USE_MUTEX},
+/* 0x74 */ { "SMBulogoffX", reply_ulogoffX, 0}, /* ulogoff doesn't give a valid TID */
+/* 0x75 */ { "SMBtconX",reply_tcon_and_X,USE_MUTEX},
+/* 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 | CAN_IPC },
+/* 0xa1 */ { "SMBnttranss", reply_nttranss, AS_USER | CAN_IPC },
+/* 0xa2 */ { "SMBntcreateX", reply_ntcreate_and_X, AS_USER | CAN_IPC },
+/* 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,AS_GUEST},
+/* 0xd1 */ { "SMBsendb",NULL,AS_GUEST},
+/* 0xd2 */ { "SMBfwdname",NULL,AS_GUEST},
+/* 0xd3 */ { "SMBcancelf",NULL,AS_GUEST},
+/* 0xd4 */ { "SMBgetmac",NULL,AS_GUEST},
+/* 0xd5 */ { "SMBsendstrt",reply_sendstrt,AS_GUEST},
+/* 0xd6 */ { "SMBsendend",reply_sendend,AS_GUEST},
+/* 0xd7 */ { "SMBsendtxt",reply_sendtxt,AS_GUEST},
+/* 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 type)
+{
+ const char *unknown_name = "SMBunknown";
+
+ if (smb_messages[type].name == NULL)
+ return unknown_name;
+
+ return smb_messages[type].name;
+}
+
+
+/****************************************************************************
+ 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 request_context *req)
+{
+ int flags;
+ uint16 session_tag;
+ struct server_context *smb = req->smb;
+
+ 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;
+
+ /* In share mode security we must ignore the vuid. */
+ session_tag = (lp_security() == SEC_SHARE) ?
+ UID_FIELD_INVALID :
+ SVAL(req->in.hdr,HDR_UID);
+
+ req->conn = conn_find(req->smb, SVAL(req->in.hdr,HDR_TID));
+
+ /* setup the user context for this request */
+ setup_user_context(req);
+
+ /* Ensure this value is replaced in the incoming packet. */
+ SSVAL(req->in.hdr,HDR_UID,session_tag);
+
+ if (req->user_ctx) {
+ req->user_ctx->vuid = session_tag;
+ }
+ DEBUG(3,("switch message %s (task_id %d)\n",smb_fn_name(type), smb->model_ops->get_id(req)));
+
+ /* does this protocol need to be run as root? */
+ if (!(flags & AS_USER)) {
+ change_to_root_user();
+ }
+
+ /* does this protocol need a valid tree connection? */
+ if ((flags & AS_USER) && !req->conn) {
+ req_reply_error(req, NT_STATUS_NETWORK_NAME_DELETED);
+ return;
+ }
+
+ /* does this protocol need to be run as the connected user? */
+#if HACK_REWRITE
+ if ((flags & AS_USER) && !change_to_user(req->conn,session_tag)) {
+ if (!(flags & AS_GUEST)) {
+ req_reply_error(req, NT_STATUS_ACCESS_DENIED);
+ return;
+ }
+
+ /* we'll run it as guest */
+ flags &= ~AS_USER;
+ }
+#endif
+
+ /* this code is to work around a bug is MS client 3 without
+ introducing a security hole - it needs to be able to do
+ print queue checks as guest if it isn't logged in properly */
+ if (flags & AS_USER) {
+ flags &= ~AS_GUEST;
+ }
+
+ /* does it need write permission? */
+ if ((flags & NEED_WRITE) && !CAN_WRITE(req->conn)) {
+ req_reply_error(req, NT_STATUS_ACCESS_DENIED);
+ return;
+ }
+
+ /* ipc services are limited */
+ if (req->conn && req->conn->type == NTVFS_IPC && (flags & AS_USER) && !(flags & CAN_IPC)) {
+ req_reply_error(req, NT_STATUS_ACCESS_DENIED);
+ return;
+ }
+
+ /* load service specific parameters */
+ if (req->conn && !set_current_service(req->conn,(flags & AS_USER)?True:False)) {
+ req_reply_error(req, NT_STATUS_ACCESS_DENIED);
+ return;
+ }
+
+ /* does this protocol need to be run as guest? */
+#if HACK_REWRITE
+ if ((flags & AS_GUEST) &&
+ !change_to_guest()) {
+ req_reply_error(req, NT_STATUS_ACCESS_DENIED);
+ return;
+ }
+#endif
+ /* THREAD TESTING: use mutex to serialize calls to critical functions with global state */
+ if (flags & USE_MUTEX) {
+ MUTEX_LOCK_BY_ID(MUTEX_SMBD);
+ }
+ smb_messages[type].fn(req);
+ if (flags & USE_MUTEX) {
+ MUTEX_UNLOCK_BY_ID(MUTEX_SMBD);
+ }
+}
+
+
+/****************************************************************************
+ Construct a reply to the incoming packet.
+****************************************************************************/
+static void construct_reply(struct request_context *req)
+{
+ uint8 type = CVAL(req->in.hdr,HDR_COM);
+
+ /* see if its a special NBT packet */
+ if (CVAL(req->in.buffer,0) != 0) {
+ reply_special(req);
+ return;
+ }
+
+
+ /* 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));
+ exit_server(req->smb, "Non-SMB packet");
+ 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));
+ exit_server(req->smb, "Invalid SMB packet");
+ return;
+ }
+
+ 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));
+ exit_server(req->smb, "Invalid SMB packet");
+ return;
+ }
+
+
+ req->smbpid = SVAL(req->in.hdr,HDR_PID);
+ req->flags = CVAL(req->in.hdr, HDR_FLG);
+ req->flags2 = SVAL(req->in.hdr, HDR_FLG2);
+
+ switch_message(type, req);
+}
+
+
+/*
+ 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
+*/
+void chain_reply(struct request_context *req)
+{
+ uint16 chain_cmd, chain_offset;
+ char *vwv, *data;
+ uint16 wct;
+ uint16 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;
+
+ if (data + data_size > req->in.buffer + req->in.size) {
+ goto error;
+ }
+
+ /* 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_STRUCT(req->async);
+ req->control_flags &= ~REQ_CONTROL_ASYNC;
+
+ 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);
+}
+
+
+/*
+ close the socket and shutdown a server_context
+*/
+void server_terminate(struct server_context *smb)
+{
+ close(smb->socket.fd);
+ event_remove_fd_all(smb->events, smb->socket.fd);
+
+ conn_close_all(smb);
+
+ talloc_destroy(smb->mem_ctx);
+}
+
+
+/*
+ called when a SMB socket becomes readable
+*/
+void smbd_read_handler(struct event_context *ev, struct fd_event *fde,
+ time_t t, uint16 flags)
+{
+ struct request_context *req;
+ struct server_context *smb = fde->private;
+
+ req = receive_smb_request(smb);
+ if (!req) {
+ smb->model_ops->terminate_connection(smb, "receive error");
+ return;
+ }
+
+ construct_reply(req);
+
+ /* free up temporary memory */
+ lp_talloc_free();
+}
+
+
+/*
+ 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
+*/
+void smbd_process_async(struct server_context *smb)
+{
+ struct request_context *req;
+
+ req = receive_smb_request(smb);
+ if (!req) {
+ smb->model_ops->terminate_connection(smb, "receive error");
+ return;
+ }
+
+ construct_reply(req);
+}
+
+
+/*
+ initialise a server_context from a open socket and register a event handler
+ for reading from that socket
+*/
+void init_smbsession(struct event_context *ev, struct model_ops *model_ops, int fd,
+ void (*read_handler)(struct event_context *, struct fd_event *, time_t, uint16))
+{
+ struct server_context *smb;
+ TALLOC_CTX *mem_ctx;
+ struct fd_event fde;
+ char *socket_addr;
+
+ set_socket_options(fd,"SO_KEEPALIVE");
+ set_socket_options(fd, lp_socket_options());
+
+ mem_ctx = talloc_init("server_context");
+
+ smb = (struct server_context *)talloc(mem_ctx, sizeof(*smb));
+ if (!smb) return;
+
+ ZERO_STRUCTP(smb);
+
+ smb->mem_ctx = mem_ctx;
+ smb->socket.fd = fd;
+ smb->pid = getpid();
+
+ sub_set_context(&smb->substitute);
+
+ /* set an initial client name based on its IP address. This will be replaced with
+ the netbios name later if it gives us one */
+ socket_addr = get_socket_addr(smb->mem_ctx, fd);
+ sub_set_remote_machine(socket_addr);
+ smb->socket.client_addr = socket_addr;
+
+ /* now initialise a few default values associated with this smb socket */
+ smb->negotiate.max_send = 0xFFFF;
+
+ /* this is the size that w2k uses, and it appears to be important for
+ good performance */
+ smb->negotiate.max_recv = 4356;
+
+ smb->users.next_vuid = VUID_OFFSET;
+
+ smb->events = ev;
+ smb->model_ops = model_ops;
+
+ conn_init(smb);
+
+ /* setup a event handler for this socket. We are initially
+ only interested in reading from the socket */
+ fde.fd = fd;
+ fde.handler = read_handler;
+ fde.private = smb;
+ fde.flags = EVENT_FD_READ;
+
+ event_add_fd(ev, &fde);
+
+ /* setup the DCERPC server subsystem */
+ dcesrv_init_context(&smb->dcesrv);
+}
#include "includes.h"
-
-/*
- send an oplock break request to a client
-*/
-BOOL req_send_oplock_break(struct tcon_context *conn, uint16 fnum, uint8 level)
-{
- struct request_context *req;
-
- req = init_smb_request(conn->smb);
-
- req_setup_reply(req, 8, 0);
-
- SCVAL(req->out.hdr,HDR_COM,SMBlockingX);
- SSVAL(req->out.hdr,HDR_TID,conn->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);
- SSVAL(req->out.vwv, VWV(3), 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;
-}
-
-/****************************************************************************
-receive a SMB request from the wire, forming a request_context from the result
-****************************************************************************/
-static struct request_context *receive_smb_request(struct server_context *smb)
-{
- ssize_t len, len2;
- char header[4];
- struct request_context *req;
-
- len = read_data(smb->socket.fd, header, 4);
- if (len != 4) {
- return NULL;
- }
-
- len = smb_len(header);
-
- req = init_smb_request(smb);
-
- GetTimeOfDay(&req->request_time);
- req->chained_fnum = -1;
-
- /* allocate the incoming buffer at the right size */
- req->in.buffer = talloc(req->mem_ctx, len + NBT_HDR_SIZE);
-
- /* fill in the already received header */
- memcpy(req->in.buffer, header, 4);
-
- len2 = read_data(smb->socket.fd, req->in.buffer + NBT_HDR_SIZE, len);
- if (len2 != len) {
- return NULL;
- }
-
- /* fill in the rest of the req->in structure */
- req->in.size = len + NBT_HDR_SIZE;
- 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);
- }
- }
-
- return req;
-}
-
-/*
- setup the user_ctx element of a request
-*/
-static void setup_user_context(struct request_context *req)
-{
- struct user_context *ctx;
-
- ctx = talloc(req->mem_ctx, sizeof(*ctx));
- ctx->vuid = SVAL(req->in.hdr, HDR_UID);
- ctx->vuser = get_valid_user_struct(req->smb, ctx->vuid);
-
- req->user_ctx = ctx;
-}
-
-
-/*
-These flags determine some of the permissions required to do an operation
-
-Note that I don't set NEED_WRITE on some write operations because they
-are used by some brain-dead clients when printing, and I don't want to
-force write permissions on print services.
-*/
-#define AS_USER (1<<0)
-#define NEED_WRITE (1<<1)
-#define TIME_INIT (1<<2)
-#define CAN_IPC (1<<3)
-#define AS_GUEST (1<<5)
-#define USE_MUTEX (1<<7)
-
-/*
- 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!
-*/
-static const struct smb_message_struct
-{
- const char *name;
- void (*fn)(struct request_context *);
- int flags;
-}
- smb_messages[256] = {
-/* 0x00 */ { "SMBmkdir",reply_mkdir,AS_USER | NEED_WRITE},
-/* 0x01 */ { "SMBrmdir",reply_rmdir,AS_USER | NEED_WRITE},
-/* 0x02 */ { "SMBopen",reply_open,AS_USER },
-/* 0x03 */ { "SMBcreate",reply_mknew,AS_USER},
-/* 0x04 */ { "SMBclose",reply_close,AS_USER | CAN_IPC },
-/* 0x05 */ { "SMBflush",reply_flush,AS_USER},
-/* 0x06 */ { "SMBunlink",reply_unlink,AS_USER | NEED_WRITE },
-/* 0x07 */ { "SMBmv",reply_mv,AS_USER | NEED_WRITE },
-/* 0x08 */ { "SMBgetatr",reply_getatr,AS_USER},
-/* 0x09 */ { "SMBsetatr",reply_setatr,AS_USER | NEED_WRITE},
-/* 0x0a */ { "SMBread",reply_read,AS_USER},
-/* 0x0b */ { "SMBwrite",reply_write,AS_USER | CAN_IPC },
-/* 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 | NEED_WRITE },
-/* 0x23 */ { "SMBgetattrE",reply_getattrE,AS_USER },
-/* 0x24 */ { "SMBlockingX",reply_lockingX,AS_USER },
-/* 0x25 */ { "SMBtrans",reply_trans,AS_USER | CAN_IPC },
-/* 0x26 */ { "SMBtranss",NULL,AS_USER | CAN_IPC},
-/* 0x27 */ { "SMBioctl",reply_ioctl,0},
-/* 0x28 */ { "SMBioctls",NULL,AS_USER},
-/* 0x29 */ { "SMBcopy",reply_copy,AS_USER | NEED_WRITE },
-/* 0x2a */ { "SMBmove",NULL,AS_USER | NEED_WRITE },
-/* 0x2b */ { "SMBecho",reply_echo,0},
-/* 0x2c */ { "SMBwriteclose",reply_writeclose,AS_USER},
-/* 0x2d */ { "SMBopenX",reply_open_and_X,AS_USER | CAN_IPC },
-/* 0x2e */ { "SMBreadX",reply_read_and_X,AS_USER | CAN_IPC },
-/* 0x2f */ { "SMBwriteX",reply_write_and_X,AS_USER | CAN_IPC },
-/* 0x30 */ { NULL, NULL, 0 },
-/* 0x31 */ { NULL, NULL, 0 },
-/* 0x32 */ { "SMBtrans2", reply_trans2, AS_USER | CAN_IPC },
-/* 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,USE_MUTEX},
-/* 0x71 */ { "SMBtdis",reply_tdis,0},
-/* 0x72 */ { "SMBnegprot",reply_negprot,USE_MUTEX},
-/* 0x73 */ { "SMBsesssetupX",reply_sesssetup,USE_MUTEX},
-/* 0x74 */ { "SMBulogoffX", reply_ulogoffX, 0}, /* ulogoff doesn't give a valid TID */
-/* 0x75 */ { "SMBtconX",reply_tcon_and_X,USE_MUTEX},
-/* 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 | CAN_IPC },
-/* 0xa1 */ { "SMBnttranss", reply_nttranss, AS_USER | CAN_IPC },
-/* 0xa2 */ { "SMBntcreateX", reply_ntcreate_and_X, AS_USER | CAN_IPC },
-/* 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,AS_GUEST},
-/* 0xd1 */ { "SMBsendb",NULL,AS_GUEST},
-/* 0xd2 */ { "SMBfwdname",NULL,AS_GUEST},
-/* 0xd3 */ { "SMBcancelf",NULL,AS_GUEST},
-/* 0xd4 */ { "SMBgetmac",NULL,AS_GUEST},
-/* 0xd5 */ { "SMBsendstrt",reply_sendstrt,AS_GUEST},
-/* 0xd6 */ { "SMBsendend",reply_sendend,AS_GUEST},
-/* 0xd7 */ { "SMBsendtxt",reply_sendtxt,AS_GUEST},
-/* 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 type)
-{
- const char *unknown_name = "SMBunknown";
-
- if (smb_messages[type].name == NULL)
- return unknown_name;
-
- return smb_messages[type].name;
-}
-
-
-/****************************************************************************
- 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 request_context *req)
-{
- int flags;
- uint16 session_tag;
- struct server_context *smb = req->smb;
-
- 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;
-
- /* In share mode security we must ignore the vuid. */
- session_tag = (lp_security() == SEC_SHARE) ?
- UID_FIELD_INVALID :
- SVAL(req->in.hdr,HDR_UID);
-
- req->conn = conn_find(req->smb, SVAL(req->in.hdr,HDR_TID));
-
- /* setup the user context for this request */
- setup_user_context(req);
-
- /* Ensure this value is replaced in the incoming packet. */
- SSVAL(req->in.hdr,HDR_UID,session_tag);
-
- if (req->user_ctx) {
- req->user_ctx->vuid = session_tag;
- }
- DEBUG(3,("switch message %s (task_id %d)\n",smb_fn_name(type), smb->model_ops->get_id(req)));
-
- /* does this protocol need to be run as root? */
- if (!(flags & AS_USER)) {
- change_to_root_user();
- }
-
- /* does this protocol need a valid tree connection? */
- if ((flags & AS_USER) && !req->conn) {
- req_reply_error(req, NT_STATUS_NETWORK_NAME_DELETED);
- return;
- }
-
- /* does this protocol need to be run as the connected user? */
-#if HACK_REWRITE
- if ((flags & AS_USER) && !change_to_user(req->conn,session_tag)) {
- if (!(flags & AS_GUEST)) {
- req_reply_error(req, NT_STATUS_ACCESS_DENIED);
- return;
- }
-
- /* we'll run it as guest */
- flags &= ~AS_USER;
- }
-#endif
-
- /* this code is to work around a bug is MS client 3 without
- introducing a security hole - it needs to be able to do
- print queue checks as guest if it isn't logged in properly */
- if (flags & AS_USER) {
- flags &= ~AS_GUEST;
- }
-
- /* does it need write permission? */
- if ((flags & NEED_WRITE) && !CAN_WRITE(req->conn)) {
- req_reply_error(req, NT_STATUS_ACCESS_DENIED);
- return;
- }
-
- /* ipc services are limited */
- if (req->conn && req->conn->type == NTVFS_IPC && (flags & AS_USER) && !(flags & CAN_IPC)) {
- req_reply_error(req, NT_STATUS_ACCESS_DENIED);
- return;
- }
-
- /* load service specific parameters */
- if (req->conn && !set_current_service(req->conn,(flags & AS_USER)?True:False)) {
- req_reply_error(req, NT_STATUS_ACCESS_DENIED);
- return;
- }
-
- /* does this protocol need to be run as guest? */
-#if HACK_REWRITE
- if ((flags & AS_GUEST) &&
- !change_to_guest()) {
- req_reply_error(req, NT_STATUS_ACCESS_DENIED);
- return;
- }
-#endif
- /* THREAD TESTING: use mutex to serialize calls to critical functions with global state */
- if (flags & USE_MUTEX) {
- MUTEX_LOCK_BY_ID(MUTEX_SMBD);
- }
- smb_messages[type].fn(req);
- if (flags & USE_MUTEX) {
- MUTEX_UNLOCK_BY_ID(MUTEX_SMBD);
- }
-}
-
-
-/****************************************************************************
- Construct a reply to the incoming packet.
-****************************************************************************/
-static void construct_reply(struct request_context *req)
-{
- uint8 type = CVAL(req->in.hdr,HDR_COM);
-
- /* see if its a special NBT packet */
- if (CVAL(req->in.buffer,0) != 0) {
- reply_special(req);
- return;
- }
-
-
- /* 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));
- exit_server(req->smb, "Non-SMB packet");
- 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));
- exit_server(req->smb, "Invalid SMB packet");
- return;
- }
-
- 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));
- exit_server(req->smb, "Invalid SMB packet");
- return;
- }
-
-
- req->smbpid = SVAL(req->in.hdr,HDR_PID);
- req->flags = CVAL(req->in.hdr, HDR_FLG);
- req->flags2 = SVAL(req->in.hdr, HDR_FLG2);
-
- switch_message(type, req);
-}
-
-
-/*
- 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
-*/
-void chain_reply(struct request_context *req)
-{
- uint16 chain_cmd, chain_offset;
- char *vwv, *data;
- uint16 wct;
- uint16 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;
-
- if (data + data_size > req->in.buffer + req->in.size) {
- goto error;
- }
-
- /* 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_STRUCT(req->async);
- req->control_flags &= ~REQ_CONTROL_ASYNC;
-
- 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);
-}
-
-
-/*
- close the socket and shutdown a server_context
-*/
-void server_terminate(struct server_context *smb)
-{
- close(smb->socket.fd);
- event_remove_fd_all(smb->events, smb->socket.fd);
-
- conn_close_all(smb);
-
- talloc_destroy(smb->mem_ctx);
-}
-
-
-/*
- called when a SMB socket becomes readable
-*/
-void smbd_read_handler(struct event_context *ev, struct fd_event *fde,
- time_t t, uint16 flags)
-{
- struct request_context *req;
- struct server_context *smb = fde->private;
-
- req = receive_smb_request(smb);
- if (!req) {
- smb->model_ops->terminate_connection(smb, "receive error");
- return;
- }
-
- construct_reply(req);
-
- /* free up temporary memory */
- lp_talloc_free();
-}
-
-
-/*
- 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
-*/
-void smbd_process_async(struct server_context *smb)
-{
- struct request_context *req;
-
- req = receive_smb_request(smb);
- if (!req) {
- smb->model_ops->terminate_connection(smb, "receive error");
- return;
- }
-
- construct_reply(req);
-}
-
-
-/*
- initialise a server_context from a open socket and register a event handler
- for reading from that socket
-*/
-void init_smbsession(struct event_context *ev, struct model_ops *model_ops, int fd,
- void (*read_handler)(struct event_context *, struct fd_event *, time_t, uint16))
-{
- struct server_context *smb;
- TALLOC_CTX *mem_ctx;
- struct fd_event fde;
- char *socket_addr;
-
- set_socket_options(fd,"SO_KEEPALIVE");
- set_socket_options(fd, lp_socket_options());
-
- mem_ctx = talloc_init("server_context");
-
- smb = (struct server_context *)talloc(mem_ctx, sizeof(*smb));
- if (!smb) return;
-
- ZERO_STRUCTP(smb);
-
- smb->mem_ctx = mem_ctx;
- smb->socket.fd = fd;
- smb->pid = getpid();
-
- sub_set_context(&smb->substitute);
-
- /* set an initial client name based on its IP address. This will be replaced with
- the netbios name later if it gives us one */
- socket_addr = get_socket_addr(smb->mem_ctx, fd);
- sub_set_remote_machine(socket_addr);
- smb->socket.client_addr = socket_addr;
-
- /* now initialise a few default values associated with this smb socket */
- smb->negotiate.max_send = 0xFFFF;
-
- /* this is the size that w2k uses, and it appears to be important for
- good performance */
- smb->negotiate.max_recv = 4356;
-
- smb->users.next_vuid = VUID_OFFSET;
-
- smb->events = ev;
- smb->model_ops = model_ops;
-
- conn_init(smb);
-
- /* setup a event handler for this socket. We are initially
- only interested in reading from the socket */
- fde.fd = fd;
- fde.handler = read_handler;
- fde.private = smb;
- fde.flags = EVENT_FD_READ;
-
- event_add_fd(ev, &fde);
-
- /* setup the DCERPC server subsystem */
- dcesrv_init_context(&smb->dcesrv);
-}
-
-
/*
* initialize an smb process
*/
git.samba.org / gd / samba-autobuild / .git / commitdiff