FreeBSD/Linux Kernel Cross Reference
sys/netsmb/smb_subr.c
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: releng/5.4/sys/netsmb/smb_subr.c 141090 2005-01-31 23:27:04Z imp $");
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
55 MALLOC_DEFINE(M_SMBDATA, "SMBDATA", "Misc netsmb data");
56 MALLOC_DEFINE(M_SMBSTR, "SMBSTR", "netsmb string data");
57 MALLOC_DEFINE(M_SMBTEMP, "SMBTEMP", "Temp netsmb data");
58
59 smb_unichar smb_unieol = 0;
60
61 void
62 smb_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
73 int
74 smb_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
98 char *
99 smb_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 */
116 char *
117 smb_strdupin(char *s, int maxlen)
118 {
119 char *p, bt;
120 int 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 copyin(s, p, len);
133 return p;
134 }
135
136 /*
137 * duplicate memory block from a user space.
138 */
139 void *
140 smb_memdupin(void *umem, int len)
141 {
142 char *p;
143
144 if (len > 8 * 1024)
145 return NULL;
146 p = malloc(len, M_SMBSTR, M_WAITOK);
147 if (copyin(umem, p, len) == 0)
148 return p;
149 free(p, M_SMBSTR);
150 return NULL;
151 }
152
153 /*
154 * duplicate memory block in the kernel space.
155 */
156 void *
157 smb_memdup(const void *umem, int len)
158 {
159 char *p;
160
161 if (len > 8 * 1024)
162 return NULL;
163 p = malloc(len, M_SMBSTR, M_WAITOK);
164 if (p == NULL)
165 return NULL;
166 bcopy(umem, p, len);
167 return p;
168 }
169
170 void
171 smb_strfree(char *s)
172 {
173 free(s, M_SMBSTR);
174 }
175
176 void
177 smb_memfree(void *s)
178 {
179 free(s, M_SMBSTR);
180 }
181
182 void *
183 smb_zmalloc(unsigned long size, struct malloc_type *type, int flags)
184 {
185
186 return malloc(size, type, flags | M_ZERO);
187 }
188
189 void
190 smb_strtouni(u_int16_t *dst, const char *src)
191 {
192 while (*src) {
193 *dst++ = htole16(*src++);
194 }
195 *dst = 0;
196 }
197
198 #ifdef SMB_SOCKETDATA_DEBUG
199 void
200 m_dumpm(struct mbuf *m) {
201 char *p;
202 int len;
203 printf("d=");
204 while(m) {
205 p=mtod(m,char *);
206 len=m->m_len;
207 printf("(%d)",len);
208 while(len--){
209 printf("%02x ",((int)*(p++)) & 0xff);
210 }
211 m=m->m_next;
212 };
213 printf("\n");
214 }
215 #endif
216
217 int
218 smb_maperror(int eclass, int eno)
219 {
220 if (eclass == 0 && eno == 0)
221 return 0;
222 switch (eclass) {
223 case ERRDOS:
224 switch (eno) {
225 case ERRbadfunc:
226 case ERRbadmcb:
227 case ERRbadenv:
228 case ERRbadformat:
229 case ERRrmuns:
230 return EINVAL;
231 case ERRbadfile:
232 case ERRbadpath:
233 case ERRremcd:
234 case 66: /* nt returns it when share not available */
235 case 67: /* observed from nt4sp6 when sharename wrong */
236 return ENOENT;
237 case ERRnofids:
238 return EMFILE;
239 case ERRnoaccess:
240 case ERRbadshare:
241 return EACCES;
242 case ERRbadfid:
243 return EBADF;
244 case ERRnomem:
245 return ENOMEM; /* actually remote no mem... */
246 case ERRbadmem:
247 return EFAULT;
248 case ERRbadaccess:
249 return EACCES;
250 case ERRbaddata:
251 return E2BIG;
252 case ERRbaddrive:
253 case ERRnotready: /* nt */
254 return ENXIO;
255 case ERRdiffdevice:
256 return EXDEV;
257 case ERRnofiles:
258 return 0; /* eeof ? */
259 return ETXTBSY;
260 case ERRlock:
261 return EDEADLK;
262 case ERRfilexists:
263 return EEXIST;
264 case 123: /* dunno what is it, but samba maps as noent */
265 return ENOENT;
266 case 145: /* samba */
267 return ENOTEMPTY;
268 case 183:
269 return EEXIST;
270 case ERRquota:
271 return EDQUOT;
272 }
273 break;
274 case ERRSRV:
275 switch (eno) {
276 case ERRerror:
277 return EINVAL;
278 case ERRbadpw:
279 case ERRpasswordExpired:
280 return EAUTH;
281 case ERRaccess:
282 return EACCES;
283 case ERRinvnid:
284 return ENETRESET;
285 case ERRinvnetname:
286 SMBERROR("NetBIOS name is invalid\n");
287 return EAUTH;
288 case 3: /* reserved and returned */
289 return EIO;
290 case ERRaccountExpired:
291 case ERRbadClient:
292 case ERRbadLogonTime:
293 return EPERM;
294 case ERRnosupport:
295 return EBADRPC;
296 }
297 break;
298 case ERRHRD:
299 switch (eno) {
300 case ERRnowrite:
301 return EROFS;
302 case ERRbadunit:
303 return ENODEV;
304 case ERRnotready:
305 case ERRbadcmd:
306 case ERRdata:
307 return EIO;
308 case ERRbadreq:
309 return EBADRPC;
310 case ERRbadshare:
311 return ETXTBSY;
312 case ERRlock:
313 return EDEADLK;
314 }
315 break;
316 }
317 SMBERROR("Unmapped error %d:%d\n", eclass, eno);
318 return EBADRPC;
319 }
320
321 static int
322 smb_copy_iconv(struct mbchain *mbp, c_caddr_t src, caddr_t dst, size_t len)
323 {
324 size_t outlen = len;
325
326 return iconv_conv((struct iconv_drv*)mbp->mb_udata, &src, &len, &dst, &outlen);
327 }
328
329 int
330 smb_put_dmem(struct mbchain *mbp, struct smb_vc *vcp, const char *src,
331 int size, int caseopt)
332 {
333 struct iconv_drv *dp = vcp->vc_toserver;
334
335 if (size == 0)
336 return 0;
337 if (dp == NULL) {
338 return mb_put_mem(mbp, src, size, MB_MSYSTEM);
339 }
340 mbp->mb_copy = smb_copy_iconv;
341 mbp->mb_udata = dp;
342 return mb_put_mem(mbp, src, size, MB_MCUSTOM);
343 }
344
345 int
346 smb_put_dstring(struct mbchain *mbp, struct smb_vc *vcp, const char *src,
347 int caseopt)
348 {
349 int error;
350
351 error = smb_put_dmem(mbp, vcp, src, strlen(src), caseopt);
352 if (error)
353 return error;
354 return mb_put_uint8(mbp, 0);
355 }
356
357 int
358 smb_put_asunistring(struct smb_rq *rqp, const char *src)
359 {
360 struct mbchain *mbp = &rqp->sr_rq;
361 struct iconv_drv *dp = rqp->sr_vc->vc_toserver;
362 u_char c;
363 int error;
364
365 while (*src) {
366 iconv_convmem(dp, &c, src++, 1);
367 error = mb_put_uint16le(mbp, c);
368 if (error)
369 return error;
370 }
371 return mb_put_uint16le(mbp, 0);
372 }
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