smb_subr.c revision 163992 
1/*-
2 * Copyright (c) 2000-2001 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
33#include <sys/cdefs.h>
34__FBSDID("$FreeBSD: head/sys/netsmb/smb_subr.c 163992 2006-11-05 06:31:08Z bp $");
35
36#include <sys/param.h>
37#include <sys/systm.h>
38#include <sys/endian.h>
39#include <sys/kernel.h>
40#include <sys/malloc.h>
41#include <sys/proc.h>
42#include <sys/lock.h>
43#include <sys/sysctl.h>
44#include <sys/socket.h>
45#include <sys/signalvar.h>
46#include <sys/mbuf.h>
47
48#include <sys/iconv.h>
49
50#include <netsmb/smb.h>
51#include <netsmb/smb_conn.h>
52#include <netsmb/smb_rq.h>
53#include <netsmb/smb_subr.h>
54
55MALLOC_DEFINE(M_SMBDATA, "SMBDATA", "Misc netsmb data");
56MALLOC_DEFINE(M_SMBSTR, "SMBSTR", "netsmb string data");
57MALLOC_DEFINE(M_SMBTEMP, "SMBTEMP", "Temp netsmb data");
58
59smb_unichar smb_unieol = 0;
60
61void
62smb_makescred(struct smb_cred *scred, struct thread *td, struct ucred *cred)
63{
64	if (td) {
65		scred->scr_td = td;
66		scred->scr_cred = cred ? cred : td->td_ucred;
67	} else {
68		scred->scr_td = NULL;
69		scred->scr_cred = cred ? cred : NULL;
70	}
71}
72
73int
74smb_td_intr(struct thread *td)
75{
76	struct proc *p;
77	sigset_t tmpset;
78
79	if (td == NULL)
80		return 0;
81
82	p = td->td_proc;
83	PROC_LOCK(p);
84	tmpset = p->p_siglist;
85	SIGSETOR(tmpset, td->td_siglist);
86	SIGSETNAND(tmpset, td->td_sigmask);
87	mtx_lock(&p->p_sigacts->ps_mtx);
88	SIGSETNAND(tmpset, p->p_sigacts->ps_sigignore);
89	mtx_unlock(&p->p_sigacts->ps_mtx);
90	if (SIGNOTEMPTY(td->td_siglist) && SMB_SIGMASK(tmpset)) {
91		PROC_UNLOCK(p);
92                return EINTR;
93	}
94	PROC_UNLOCK(p);
95	return 0;
96}
97
98char *
99smb_strdup(const char *s)
100{
101	char *p;
102	int len;
103
104	len = s ? strlen(s) + 1 : 1;
105	p = malloc(len, M_SMBSTR, M_WAITOK);
106	if (s)
107		bcopy(s, p, len);
108	else
109		*p = 0;
110	return p;
111}
112
113/*
114 * duplicate string from a user space.
115 */
116char *
117smb_strdupin(char *s, int maxlen)
118{
119	char *p, bt;
120	int error, len = 0;
121
122	for (p = s; ;p++) {
123		if (copyin(p, &bt, 1))
124			return NULL;
125		len++;
126		if (maxlen && len > maxlen)
127			return NULL;
128		if (bt == 0)
129			break;
130	}
131	p = malloc(len, M_SMBSTR, M_WAITOK);
132	error = copyin(s, p, len);
133	if (error) {
134		free(p, M_SMBSTR);
135		return (NULL);
136	}
137	return p;
138}
139
140/*
141 * duplicate memory block from a user space.
142 */
143void *
144smb_memdupin(void *umem, int len)
145{
146	char *p;
147
148	if (len > 8 * 1024)
149		return NULL;
150	p = malloc(len, M_SMBSTR, M_WAITOK);
151	if (copyin(umem, p, len) == 0)
152		return p;
153	free(p, M_SMBSTR);
154	return NULL;
155}
156
157/*
158 * duplicate memory block in the kernel space.
159 */
160void *
161smb_memdup(const void *umem, int len)
162{
163	char *p;
164
165	if (len > 8 * 1024)
166		return NULL;
167	p = malloc(len, M_SMBSTR, M_WAITOK);
168	if (p == NULL)
169		return NULL;
170	bcopy(umem, p, len);
171	return p;
172}
173
174void
175smb_strfree(char *s)
176{
177	free(s, M_SMBSTR);
178}
179
180void
181smb_memfree(void *s)
182{
183	free(s, M_SMBSTR);
184}
185
186void *
187smb_zmalloc(unsigned long size, struct malloc_type *type, int flags)
188{
189
190	return malloc(size, type, flags | M_ZERO);
191}
192
193void
194smb_strtouni(u_int16_t *dst, const char *src)
195{
196	while (*src) {
197		*dst++ = htole16(*src++);
198	}
199	*dst = 0;
200}
201
202#ifdef SMB_SOCKETDATA_DEBUG
203void
204m_dumpm(struct mbuf *m) {
205	char *p;
206	int len;
207	printf("d=");
208	while(m) {
209		p=mtod(m,char *);
210		len=m->m_len;
211		printf("(%d)",len);
212		while(len--){
213			printf("%02x ",((int)*(p++)) & 0xff);
214		}
215		m=m->m_next;
216	};
217	printf("\n");
218}
219#endif
220
221int
222smb_maperror(int eclass, int eno)
223{
224	if (eclass == 0 && eno == 0)
225		return 0;
226	switch (eclass) {
227	    case ERRDOS:
228		switch (eno) {
229		    case ERRbadfunc:
230		    case ERRbadmcb:
231		    case ERRbadenv:
232		    case ERRbadformat:
233		    case ERRrmuns:
234			return EINVAL;
235		    case ERRbadfile:
236		    case ERRbadpath:
237		    case ERRremcd:
238		    case 66:		/* nt returns it when share not available */
239		    case 67:		/* observed from nt4sp6 when sharename wrong */
240			return ENOENT;
241		    case ERRnofids:
242			return EMFILE;
243		    case ERRnoaccess:
244		    case ERRbadshare:
245			return EACCES;
246		    case ERRbadfid:
247			return EBADF;
248		    case ERRnomem:
249			return ENOMEM;	/* actually remote no mem... */
250		    case ERRbadmem:
251			return EFAULT;
252		    case ERRbadaccess:
253			return EACCES;
254		    case ERRbaddata:
255			return E2BIG;
256		    case ERRbaddrive:
257		    case ERRnotready:	/* nt */
258			return ENXIO;
259		    case ERRdiffdevice:
260			return EXDEV;
261		    case ERRnofiles:
262			return 0;	/* eeof ? */
263			return ETXTBSY;
264		    case ERRlock:
265			return EDEADLK;
266		    case ERRfilexists:
267			return EEXIST;
268		    case 123:		/* dunno what is it, but samba maps as noent */
269			return ENOENT;
270		    case 145:		/* samba */
271			return ENOTEMPTY;
272		    case ERRnotlocked:
273			return 0;	/* file become unlocked */
274		    case 183:
275			return EEXIST;
276		    case ERRquota:
277			return EDQUOT;
278		}
279		break;
280	    case ERRSRV:
281		switch (eno) {
282		    case ERRerror:
283			return EINVAL;
284		    case ERRbadpw:
285		    case ERRpasswordExpired:
286			return EAUTH;
287		    case ERRaccess:
288			return EACCES;
289		    case ERRinvnid:
290			return ENETRESET;
291		    case ERRinvnetname:
292			SMBERROR("NetBIOS name is invalid\n");
293			return EAUTH;
294		    case 3:		/* reserved and returned */
295			return EIO;
296		    case ERRaccountExpired:
297		    case ERRbadClient:
298		    case ERRbadLogonTime:
299			return EPERM;
300		    case ERRnosupport:
301			return EBADRPC;
302		}
303		break;
304	    case ERRHRD:
305		switch (eno) {
306		    case ERRnowrite:
307			return EROFS;
308		    case ERRbadunit:
309			return ENODEV;
310		    case ERRnotready:
311		    case ERRbadcmd:
312		    case ERRdata:
313			return EIO;
314		    case ERRbadreq:
315			return EBADRPC;
316		    case ERRbadshare:
317			return ETXTBSY;
318		    case ERRlock:
319			return EDEADLK;
320		}
321		break;
322	}
323	SMBERROR("Unmapped error %d:%d\n", eclass, eno);
324	return EBADRPC;
325}
326
327static int
328smb_copy_iconv(struct mbchain *mbp, c_caddr_t src, caddr_t dst,
329    size_t *srclen, size_t *dstlen)
330{
331	int error;
332	size_t inlen = *srclen, outlen = *dstlen;
333
334	error = iconv_conv((struct iconv_drv*)mbp->mb_udata, &src, &inlen,
335	    &dst, &outlen);
336	if (inlen != *srclen || outlen != *dstlen) {
337		*srclen -= inlen;
338		*dstlen -= outlen;
339		return 0;
340	} else
341		return error;
342}
343
344int
345smb_put_dmem(struct mbchain *mbp, struct smb_vc *vcp, const char *src,
346	int size, int caseopt)
347{
348	struct iconv_drv *dp = vcp->vc_toserver;
349
350	if (size == 0)
351		return 0;
352	if (dp == NULL) {
353		return mb_put_mem(mbp, src, size, MB_MSYSTEM);
354	}
355	mbp->mb_copy = smb_copy_iconv;
356	mbp->mb_udata = dp;
357	return mb_put_mem(mbp, src, size, MB_MCUSTOM);
358}
359
360int
361smb_put_dstring(struct mbchain *mbp, struct smb_vc *vcp, const char *src,
362	int caseopt)
363{
364	int error;
365
366	error = smb_put_dmem(mbp, vcp, src, strlen(src), caseopt);
367	if (error)
368		return error;
369	return mb_put_uint8(mbp, 0);
370}
371
372int
373smb_put_asunistring(struct smb_rq *rqp, const char *src)
374{
375	struct mbchain *mbp = &rqp->sr_rq;
376	struct iconv_drv *dp = rqp->sr_vc->vc_toserver;
377	u_char c;
378	int error;
379
380	while (*src) {
381		iconv_convmem(dp, &c, src++, 1);
382		error = mb_put_uint16le(mbp, c);
383		if (error)
384			return error;
385	}
386	return mb_put_uint16le(mbp, 0);
387}
388