xref: /titanic_41/usr/src/lib/libsmbfs/smb/file.c (revision bbb1277b6ec1b0daad4e3ed1a2b891d3e2ece2eb)
1 /*
2  * Copyright (c) 2000, Boris Popov
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  * 3. All advertising materials mentioning features or use of this software
14  *    must display the following acknowledgement:
15  *    This product includes software developed by Boris Popov.
16  * 4. Neither the name of the author nor the names of any co-contributors
17  *    may be used to endorse or promote products derived from this software
18  *    without specific prior written permission.
19  *
20  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30  * SUCH DAMAGE.
31  *
32  * $Id: file.c,v 1.4 2004/12/13 00:25:21 lindak Exp $
33  */
34 
35 /*
36  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
37  * Use is subject to license terms.
38  */
39 
40 #include <sys/param.h>
41 #include <sys/ioctl.h>
42 #include <sys/time.h>
43 #include <sys/mount.h>
44 #include <fcntl.h>
45 #include <ctype.h>
46 #include <errno.h>
47 #include <stdio.h>
48 #include <string.h>
49 #include <strings.h>
50 #include <stdlib.h>
51 #include <pwd.h>
52 #include <grp.h>
53 #include <unistd.h>
54 #include <libintl.h>
55 
56 #include <sys/types.h>
57 #include <sys/file.h>
58 
59 #include <netsmb/smb.h>
60 #include <netsmb/smb_lib.h>
61 
62 #include "private.h"
63 
64 int
65 smb_fh_close(struct smb_ctx *ctx, int fh)
66 {
67 	struct smb_rq	*rqp;
68 	struct mbdata	*mbp;
69 	int error;
70 
71 	error = smb_rq_init(ctx, SMB_COM_CLOSE, &rqp);
72 	if (error != 0)
73 		return (error);
74 	mbp = smb_rq_getrequest(rqp);
75 	smb_rq_wstart(rqp);
76 	mb_put_uint16le(mbp, (uint16_t)fh);
77 	mb_put_uint32le(mbp, 0);	/* time stamp */
78 	smb_rq_wend(rqp);
79 	mb_put_uint16le(mbp, 0);	/* byte count */
80 
81 	error = smb_rq_simple(rqp);
82 	smb_rq_done(rqp);
83 
84 	return (error);
85 }
86 
87 int
88 smb_fh_ntcreate(
89 	struct smb_ctx *ctx, char *path,
90 	int flags, int req_acc, int efattr,
91 	int share_acc, int open_disp,
92 	int create_opts, int impersonation,
93 	int *fhp, uint32_t *action_taken)
94 {
95 	struct smb_rq	*rqp;
96 	struct mbdata	*mbp;
97 	char		*pathsizep;
98 	int		pathstart, pathsize;
99 	int		error, flags2, uc;
100 	uint16_t	fh;
101 	uint8_t		wc;
102 
103 	flags2 = smb_ctx_flags2(ctx);
104 	if (flags2 == -1)
105 		return (EIO);
106 	uc = flags2 & SMB_FLAGS2_UNICODE;
107 
108 	error = smb_rq_init(ctx, SMB_COM_NT_CREATE_ANDX, &rqp);
109 	if (error != 0)
110 		return (error);
111 
112 	mbp = smb_rq_getrequest(rqp);
113 	smb_rq_wstart(rqp);
114 	mb_put_uint16le(mbp, 0xff);	/* secondary command */
115 	mb_put_uint16le(mbp, 0);	/* offset to next command (none) */
116 	mb_put_uint8(mbp, 0);		/* MBZ (pad?) */
117 	(void) mb_fit(mbp, 2, &pathsizep); /* path size - fill in below */
118 	mb_put_uint32le(mbp, flags);	/* create flags (oplock) */
119 	mb_put_uint32le(mbp, 0);	/* FID - basis for path if not root */
120 	mb_put_uint32le(mbp, req_acc);
121 	mb_put_uint64le(mbp, 0);		/* initial alloc. size */
122 	mb_put_uint32le(mbp, efattr);		/* ext. file attributes */
123 	mb_put_uint32le(mbp, share_acc);	/* share access mode */
124 	mb_put_uint32le(mbp, open_disp);	/* open disposition */
125 	mb_put_uint32le(mbp, create_opts);  /* create_options */
126 	mb_put_uint32le(mbp, impersonation);
127 	mb_put_uint8(mbp, 0);	/* security flags (?) */
128 	smb_rq_wend(rqp);
129 	smb_rq_bstart(rqp);
130 	if (uc) {
131 		/*
132 		 * We're about to put a unicode string.  We know
133 		 * we're misaligned at this point, and need to
134 		 * save the mb_count at the start of the string,
135 		 * not at the alignment padding placed before it.
136 		 * So add the algnment padding by hand here.
137 		 */
138 		mb_put_uint8(mbp, 0);
139 	}
140 	pathstart = mbp->mb_count;
141 	mb_put_string(mbp, path, uc);
142 	smb_rq_bend(rqp);
143 
144 	/* Now go back and fill in pathsizep */
145 	pathsize = mbp->mb_count - pathstart;
146 	pathsizep[0] = pathsize & 0xFF;
147 	pathsizep[1] = (pathsize >> 8);
148 
149 	error = smb_rq_simple(rqp);
150 	if (error)
151 		goto out;
152 
153 	mbp = smb_rq_getreply(rqp);
154 	/*
155 	 * spec says 26 for word count, but 34 words are defined
156 	 * and observed from win2000
157 	 */
158 	error = md_get_uint8(mbp, &wc);
159 	if (error || wc < 26) {
160 		smb_error(dgettext(TEXT_DOMAIN,
161 		    "%s: open failed, bad word count"), 0, path);
162 		error = EBADRPC;
163 		goto out;
164 	}
165 	md_get_uint8(mbp, NULL);	/* secondary cmd */
166 	md_get_uint8(mbp, NULL);	/* mbz */
167 	md_get_uint16le(mbp, NULL);	/* andxoffset */
168 	md_get_uint8(mbp, NULL);	/* oplock lvl granted */
169 	md_get_uint16le(mbp, &fh);	/* FID */
170 	md_get_uint32le(mbp, action_taken);
171 #if 0	/* skip decoding the rest */
172 	md_get_uint64le(mbp, NULL);	/* creation time */
173 	md_get_uint64le(mbp, NULL);	/* access time */
174 	md_get_uint64le(mbp, NULL);	/* write time */
175 	md_get_uint64le(mbp, NULL);	/* change time */
176 	md_get_uint32le(mbp, NULL);	/* attributes */
177 	md_get_uint64le(mbp, NULL);	/* allocation size */
178 	md_get_uint64le(mbp, NULL);	/* EOF */
179 	md_get_uint16le(mbp, NULL);	/* file type */
180 	md_get_uint16le(mbp, NULL);	/* device state */
181 	md_get_uint8(mbp, NULL);	/* directory (boolean) */
182 #endif
183 
184 	/* success! */
185 	*fhp = fh;
186 	error = 0;
187 
188 out:
189 	smb_rq_done(rqp);
190 
191 	return (error);
192 }
193 
194 /*
195  * Conveinence wrapper for smb_fh_ntcreate
196  * Converts Unix-style open call to NTCreate.
197  */
198 int
199 smb_fh_open(struct smb_ctx *ctx, const char *path, int oflag, int *fhp)
200 {
201 	int error, mode, open_disp, req_acc, share_acc;
202 	char *p, *ntpath = NULL;
203 
204 	/*
205 	 * Map O_RDONLY, O_WRONLY, O_RDWR
206 	 * to FREAD, FWRITE
207 	 */
208 	mode = (oflag & 3) + 1;
209 
210 	/*
211 	 * Compute requested access, share access.
212 	 */
213 	req_acc = (
214 	    STD_RIGHT_READ_CONTROL_ACCESS |
215 	    STD_RIGHT_SYNCHRONIZE_ACCESS);
216 	share_acc = NTCREATEX_SHARE_ACCESS_NONE;
217 	if (mode & FREAD) {
218 		req_acc |= (
219 		    SA_RIGHT_FILE_READ_DATA |
220 		    SA_RIGHT_FILE_READ_EA |
221 		    SA_RIGHT_FILE_READ_ATTRIBUTES);
222 		share_acc |= NTCREATEX_SHARE_ACCESS_READ;
223 	}
224 	if (mode & FWRITE) {
225 		req_acc |= (
226 		    SA_RIGHT_FILE_WRITE_DATA |
227 		    SA_RIGHT_FILE_APPEND_DATA |
228 		    SA_RIGHT_FILE_WRITE_EA |
229 		    SA_RIGHT_FILE_WRITE_ATTRIBUTES);
230 		share_acc |= NTCREATEX_SHARE_ACCESS_WRITE;
231 	}
232 
233 	/*
234 	 * Compute open disposition
235 	 */
236 	if (oflag & FCREAT) {
237 		/* Creat if necessary. */
238 		if (oflag & FEXCL) {
239 			/* exclusive */
240 			open_disp = NTCREATEX_DISP_CREATE;
241 		} else if (oflag & FTRUNC)
242 			open_disp = NTCREATEX_DISP_OVERWRITE_IF;
243 		else
244 			open_disp = NTCREATEX_DISP_OPEN_IF;
245 	} else {
246 		/* Not creating. */
247 		if (oflag & FTRUNC)
248 			open_disp = NTCREATEX_DISP_OVERWRITE;
249 		else
250 			open_disp = NTCREATEX_DISP_OPEN;
251 	}
252 
253 	/*
254 	 * Convert Unix path to NT (backslashes)
255 	 */
256 	ntpath = strdup(path);
257 	if (ntpath == NULL)
258 		return (ENOMEM);
259 	for (p = ntpath; *p; p++)
260 		if (*p == '/')
261 			*p = '\\';
262 
263 	error = smb_fh_ntcreate(ctx, ntpath, 0, /* flags */
264 	    req_acc, SMB_EFA_NORMAL, share_acc, open_disp,
265 	    NTCREATEX_OPTIONS_NON_DIRECTORY_FILE,
266 	    NTCREATEX_IMPERSONATION_IMPERSONATION,
267 	    fhp, NULL);
268 	free(ntpath);
269 
270 	return (error);
271 }
272 
273 int
274 smb_fh_read(struct smb_ctx *ctx, int fh, off_t offset, size_t count,
275 	char *dst)
276 {
277 	struct smbioc_rw rwrq;
278 
279 	bzero(&rwrq, sizeof (rwrq));
280 	rwrq.ioc_fh = fh;
281 	rwrq.ioc_base = dst;
282 	rwrq.ioc_cnt = count;
283 	rwrq.ioc_offset = offset;
284 	if (ioctl(ctx->ct_dev_fd, SMBIOC_READ, &rwrq) == -1) {
285 		return (-1);
286 	}
287 	return (rwrq.ioc_cnt);
288 }
289 
290 int
291 smb_fh_write(struct smb_ctx *ctx, int fh, off_t offset, size_t count,
292 	const char *src)
293 {
294 	struct smbioc_rw rwrq;
295 
296 	bzero(&rwrq, sizeof (rwrq));
297 	rwrq.ioc_fh = fh;
298 	rwrq.ioc_base = (char *)src;
299 	rwrq.ioc_cnt = count;
300 	rwrq.ioc_offset = offset;
301 	if (ioctl(ctx->ct_dev_fd, SMBIOC_WRITE, &rwrq) == -1) {
302 		return (-1);
303 	}
304 	return (rwrq.ioc_cnt);
305 }
306 
307 /*
308  * Do a TRANSACT_NAMED_PIPE, which is basically just a
309  * pipe write and pipe read, all in one round trip.
310  *
311  * tdlen, tdata describe the data to send.
312  * rdlen, rdata on input describe the receive buffer,
313  * and on output *rdlen is the received length.
314  */
315 int
316 smb_fh_xactnp(struct smb_ctx *ctx, int fh,
317 	int tdlen, const char *tdata,	/* transmit */
318 	int *rdlen, char *rdata,	/* receive */
319 	int *more)
320 {
321 	int		err, rparamcnt;
322 	uint16_t	setup[2];
323 
324 	setup[0] = TRANS_TRANSACT_NAMED_PIPE;
325 	setup[1] = fh;
326 	rparamcnt = 0;
327 
328 	err = smb_t2_request(ctx, 2, setup, "\\PIPE\\",
329 	    0, NULL,	/* TX paramcnt, params */
330 	    tdlen, (void *)tdata,
331 	    &rparamcnt, NULL,	/* no RX params */
332 	    rdlen, rdata, more);
333 
334 	if (err)
335 		*rdlen = 0;
336 
337 	return (err);
338 }
339