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