/* * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License (the "License"). * You may not use this file except in compliance with the License. * * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE * or http://www.opensolaris.org/os/licensing. * See the License for the specific language governing permissions * and limitations under the License. * * When distributing Covered Code, include this CDDL HEADER in each * file and include the License file at usr/src/OPENSOLARIS.LICENSE. * If applicable, add the following below this CDDL HEADER, with the * fields enclosed by brackets "[]" replaced with your own identifying * information: Portions Copyright [yyyy] [name of copyright owner] * * CDDL HEADER END */ /* * Copyright 2008 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ #pragma ident "@(#)smb_tree_connect.c 1.4 08/08/07 SMI" #include /* * SmbTreeConnect: Map a share to a tree and obtain a tree-id (TID). * * Client Request Description * ================================== ================================= * * UCHAR WordCount; Count of parameter words = 0 * USHORT ByteCount; Count of data bytes; min = 4 * UCHAR BufferFormat1; 0x04 * STRING Path[]; Server name and share name * UCHAR BufferFormat2; 0x04 * STRING Password[]; Password * UCHAR BufferFormat3; 0x04 * STRING Service[]; Service name * * The CIFS server responds with: * * Server Response Description * ================================ ================================= * * UCHAR WordCount; Count of parameter words = 2 * USHORT MaxBufferSize; Max size message the server handles * USHORT Tid; Tree ID * USHORT ByteCount; Count of data bytes = 0 * * If the negotiated dialect is MICROSOFT NETWORKS 1.03 or earlier, * MaxBufferSize in the response message indicates the maximum size * message that the server can handle. The client should not generate * messages, nor expect to receive responses, larger than this. This * must be constant for a given server. For newer dialects, this field * is ignored. */ smb_sdrc_t smb_pre_tree_connect(smb_request_t *sr) { int rc; /* * Perhaps this should be "%A.sA" now that unicode is enabled. */ rc = smbsr_decode_data(sr, "%AAA", sr, &sr->arg.tcon.path, &sr->arg.tcon.password, &sr->arg.tcon.service); sr->arg.tcon.flags = 0; DTRACE_SMB_2(op__TreeConnect__start, smb_request_t *, sr, struct tcon *, &sr->arg.tcon); return ((rc == 0) ? SDRC_SUCCESS : SDRC_ERROR); } void smb_post_tree_connect(smb_request_t *sr) { DTRACE_SMB_1(op__TreeConnect__done, smb_request_t *, sr); } smb_sdrc_t smb_com_tree_connect(smb_request_t *sr) { smb_tree_t *tree; int rc; if ((tree = smb_tree_connect(sr)) == NULL) return (SDRC_ERROR); sr->smb_tid = tree->t_tid; sr->tid_tree = tree; rc = smbsr_encode_result(sr, 2, 0, "bwww", 2, /* wct */ (WORD)smb_maxbufsize, /* MaxBufferSize */ sr->smb_tid, /* TID */ 0); /* bcc */ return ((rc == 0) ? SDRC_SUCCESS : SDRC_ERROR); } /* * SmbTreeConnectX: Map a share to a tree and obtain a tree-id (TID). * * Client Request Description * ================================= ================================= * * UCHAR WordCount; Count of parameter words = 4 * UCHAR AndXCommand; Secondary (X) command; 0xFF = none * UCHAR AndXReserved; Reserved (must be 0) * USHORT AndXOffset; Offset to next command WordCount * USHORT Flags; Additional information * bit 0 set = disconnect Tid * USHORT PasswordLength; Length of Password[] * USHORT ByteCount; Count of data bytes; min = 3 * UCHAR Password[]; Password * STRING Path[]; Server name and share name * STRING Service[]; Service name * * If the negotiated dialect is LANMAN1.0 or later, then it is a protocol * violation for the client to send this message prior to a successful * SMB_COM_SESSION_SETUP_ANDX, and the server ignores Password. * * If the negotiated dialect is prior to LANMAN1.0 and the client has not * sent a successful SMB_COM_SESSION_SETUP_ANDX request when the tree * connect arrives, a user level security mode server must nevertheless * validate the client's credentials. * * Path follows UNC style syntax, that is to say it is encoded as * \\server\share and indicates the name of the resource to which the * client wishes to connect. * * Because Password may be an authentication response, it is a variable * length field with the length specified by PasswordLength. If * authentication is not being used, Password should be a null terminated * ASCII string with PasswordLength set to the string size including the * terminating null. * * The server can enforce whatever policy it desires to govern share * access. Administrative privilege is required for administrative * shares (C$, etc.). * * The Service component indicates the type of resource the client * intends to access. Valid values are: * * Service Description Earliest Dialect Allowed * ======== ======================== ================================ * * A: disk share PC NETWORK PROGRAM 1.0 * LPT1: printer PC NETWORK PROGRAM 1.0 * IPC named pipe MICROSOFT NETWORKS 3.0 * COMM communications device MICROSOFT NETWORKS 3.0 * ????? any type of device MICROSOFT NETWORKS 3.0 * * If bit0 of Flags is set, the tree connection to Tid in the SMB header * should be disconnected. If this tree disconnect fails, the error should * be ignored. * * If the negotiated dialect is earlier than DOS LANMAN2.1, the response to * this SMB is: * * Server Response Description * ================================ =================================== * * UCHAR WordCount; Count of parameter words = 2 * UCHAR AndXCommand; Secondary (X) command; 0xFF = none * UCHAR AndXReserved; Reserved (must be 0) * USHORT AndXOffset; Offset to next command WordCount * USHORT ByteCount; Count of data bytes; min = 3 * * If the negotiated is DOS LANMAN2.1 or later, the response to this SMB * is: * * Server Response Description * ================================ =================================== * * UCHAR WordCount; Count of parameter words = 3 * UCHAR AndXCommand; Secondary (X) command; 0xFF = none * UCHAR AndXReserved; Reserved (must be 0) * USHORT AndXOffset; Offset to next command WordCount * USHORT OptionalSupport; Optional support bits * USHORT ByteCount; Count of data bytes; min = 3 * UCHAR Service[]; Service type connected to. Always * ANSII. * STRING NativeFileSystem[]; Native file system for this tree * * NativeFileSystem is the name of the filesystem; values to be expected * include FAT, NTFS, etc. * * OptionalSupport bits has the encoding: * * Name Encoding Description * ============================= ========= ========================== * SMB_SUPPORT_SEARCH_BITS 0x0001 * SMB_SHARE_IS_IN_DFS 0x0002 * * Some servers negotiate "DOS LANMAN2.1" dialect or later and still send * the "downlevel" (i.e. wordcount==2) response. Valid AndX following * commands are * * SMB_COM_OPEN SMB_COM_OPEN_ANDX SMB_COM_CREATE * SMB_COM_CREATE_NEW SMB_COM_CREATE_DIRECTORY SMB_COM_DELETE * SMB_COM_DELETE_DIRECTORY SMB_COM_FIND SMB_COM_COPY * SMB_COM_FIND_UNIQUE SMB_COM_RENAME * SMB_COM_CHECK_DIRECTORY SMB_COM_QUERY_INFORMATION * SMB_COM_GET_PRINT_QUEUE SMB_COM_OPEN_PRINT_FILE * SMB_COM_TRANSACTION SMB_COM_NO_ANDX_CMD * SMB_COM_SET_INFORMATION SMB_COM_NT_RENAME * * Errors: * ERRDOS/ERRnomem * ERRDOS/ERRbadpath * ERRDOS/ERRinvdevice * ERRSRV/ERRaccess * ERRSRV/ERRbadpw * ERRSRV/ERRinvnetname */ smb_sdrc_t smb_pre_tree_connect_andx(smb_request_t *sr) { uint8_t *pwbuf = NULL; uint16_t pwlen = 0; int rc; rc = smbsr_decode_vwv(sr, "b.www", &sr->andx_com, &sr->andx_off, &sr->arg.tcon.flags, &pwlen); if (rc == 0) { if (pwlen != 0) { pwbuf = (uint8_t *)smbsr_malloc(&sr->request_storage, pwlen); bzero(pwbuf, pwlen); } rc = smbsr_decode_data(sr, "%#cus", sr, pwlen, pwbuf, &sr->arg.tcon.path, &sr->arg.tcon.service); sr->arg.tcon.pwdlen = pwlen; sr->arg.tcon.password = (char *)pwbuf; } DTRACE_SMB_2(op__TreeConnectX__start, smb_request_t *, sr, struct tcon *, &sr->arg.tcon); return ((rc == 0) ? SDRC_SUCCESS : SDRC_ERROR); } void smb_post_tree_connect_andx(smb_request_t *sr) { DTRACE_SMB_1(op__TreeConnectX__done, smb_request_t *, sr); } smb_sdrc_t smb_com_tree_connect_andx(smb_request_t *sr) { smb_tree_t *tree; char *service; int rc; if ((tree = smb_tree_connect(sr)) == NULL) return (SDRC_ERROR); sr->smb_tid = tree->t_tid; sr->tid_tree = tree; if (STYPE_ISIPC(tree->t_res_type)) service = "IPC"; else service = "A:"; if (sr->session->dialect < NT_LM_0_12) { rc = smbsr_encode_result(sr, 2, VAR_BCC, "bb.wwss", (char)2, /* wct */ sr->andx_com, VAR_BCC, VAR_BCC, service, sr->tid_tree->t_typename); } else { rc = smbsr_encode_result(sr, 3, VAR_BCC, "bb.wwws%u", (char)3, /* wct */ sr->andx_com, (short)64, (short)SMB_TREE_SUPPORT_SEARCH_BITS, VAR_BCC, service, sr, sr->tid_tree->t_typename); } return ((rc == 0) ? SDRC_SUCCESS : SDRC_ERROR); } /* * SmbTreeDisconnect: Disconnect a tree. * * Note: SDDF_SUPPRESS_UID is set for this operation, which means the sr * uid_user field will not be valid on entry to these functions. Do not * use it until it is set up in smb_com_tree_disconnect() or the system * will panic. * * Note: there are scenarios in which the client does not send a tree * disconnect request, for example, when ERRbaduid is returned from * SmbReadX after a user has logged off. Any open files will remain * around until the session is destroyed. * * Client Request Description * ================================== ================================= * * UCHAR WordCount; Count of parameter words = 0 * USHORT ByteCount; Count of data bytes = 0 * * The resource sharing connection identified by Tid in the SMB header is * logically disconnected from the server. Tid is invalidated; it will not * be recognized if used by the client for subsequent requests. All locks, * open files, etc. created on behalf of Tid are released. * * Server Response Description * ================================== ================================= * * UCHAR WordCount; Count of parameter words = 0 * USHORT ByteCount; Count of data bytes = 0 * * Errors: * ERRSRV/ERRinvnid * ERRSRV/ERRbaduid */ smb_sdrc_t smb_pre_tree_disconnect(smb_request_t *sr) { DTRACE_SMB_1(op__TreeDisconnect__start, smb_request_t *, sr); return (SDRC_SUCCESS); } void smb_post_tree_disconnect(smb_request_t *sr) { DTRACE_SMB_1(op__TreeDisconnect__done, smb_request_t *, sr); } /* * SmbTreeDisconnect requires a valid UID as well as a valid TID. Some * clients logoff a user and then try to disconnect the trees connected * by the user who has just been logged off, which would normally fail * in the dispatch code with ERRbaduid but, unfortunately, ERRbaduid * causes a problem for some of those clients. Windows returns ERRinvnid. * * To prevent ERRbaduid being returned, the UID and TID are looked up here * rather than prior to dispatching SmbTreeDisconnect requests. If either * the UID or the TID is invalid, ERRinvnid is returned. */ smb_sdrc_t smb_com_tree_disconnect(smb_request_t *sr) { sr->uid_user = smb_user_lookup_by_uid(sr->session, &sr->user_cr, sr->smb_uid); if (sr->uid_user != NULL) sr->tid_tree = smb_user_lookup_tree(sr->uid_user, sr->smb_tid); if (sr->uid_user == NULL || sr->tid_tree == NULL) { smbsr_error(sr, NT_STATUS_INVALID_HANDLE, ERRDOS, ERRinvnid); return (SDRC_ERROR); } smb_session_cancel_requests(sr->session, sr->tid_tree, sr); smb_tree_disconnect(sr->tid_tree); if (smbsr_encode_empty_result(sr)) return (SDRC_ERROR); return (SDRC_SUCCESS); }