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 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27 #include <sys/cdefs.h> 28 __FBSDID("$FreeBSD$"); 29 30 #include <sys/param.h> 31 #include <sys/systm.h> 32 #include <sys/endian.h> 33 #include <sys/kernel.h> 34 #include <sys/malloc.h> 35 #include <sys/proc.h> 36 #include <sys/lock.h> 37 #include <sys/sysctl.h> 38 #include <sys/socket.h> 39 #include <sys/signalvar.h> 40 #include <sys/mbuf.h> 41 42 #include <sys/iconv.h> 43 44 #include <netsmb/smb.h> 45 #include <netsmb/smb_conn.h> 46 #include <netsmb/smb_rq.h> 47 #include <netsmb/smb_subr.h> 48 49 static MALLOC_DEFINE(M_SMBDATA, "SMBDATA", "Misc netsmb data"); 50 static MALLOC_DEFINE(M_SMBSTR, "SMBSTR", "netsmb string data"); 51 MALLOC_DEFINE(M_SMBTEMP, "SMBTEMP", "Temp netsmb data"); 52 53 smb_unichar smb_unieol = 0; 54 55 void 56 smb_makescred(struct smb_cred *scred, struct thread *td, struct ucred *cred) 57 { 58 if (td) { 59 scred->scr_td = td; 60 scred->scr_cred = cred ? cred : td->td_ucred; 61 } else { 62 scred->scr_td = NULL; 63 scred->scr_cred = cred ? cred : NULL; 64 } 65 } 66 67 int 68 smb_td_intr(struct thread *td) 69 { 70 struct proc *p; 71 sigset_t tmpset; 72 73 if (td == NULL) 74 return 0; 75 76 p = td->td_proc; 77 PROC_LOCK(p); 78 tmpset = p->p_siglist; 79 SIGSETOR(tmpset, td->td_siglist); 80 SIGSETNAND(tmpset, td->td_sigmask); 81 mtx_lock(&p->p_sigacts->ps_mtx); 82 SIGSETNAND(tmpset, p->p_sigacts->ps_sigignore); 83 mtx_unlock(&p->p_sigacts->ps_mtx); 84 if (SIGNOTEMPTY(td->td_siglist) && SMB_SIGMASK(tmpset)) { 85 PROC_UNLOCK(p); 86 return EINTR; 87 } 88 PROC_UNLOCK(p); 89 return 0; 90 } 91 92 char * 93 smb_strdup(const char *s) 94 { 95 char *p; 96 size_t len; 97 98 len = s ? strlen(s) + 1 : 1; 99 p = malloc(len, M_SMBSTR, M_WAITOK); 100 if (s) 101 bcopy(s, p, len); 102 else 103 *p = 0; 104 return p; 105 } 106 107 /* 108 * duplicate string from a user space. 109 */ 110 char * 111 smb_strdupin(char *s, size_t maxlen) 112 { 113 char *p, bt; 114 int error; 115 size_t len; 116 117 len = 0; 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 error = copyin(s, p, len); 129 if (error) { 130 free(p, M_SMBSTR); 131 return (NULL); 132 } 133 return p; 134 } 135 136 /* 137 * duplicate memory block from a user space. 138 */ 139 void * 140 smb_memdupin(void *umem, size_t 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(size_t 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 size_t len; 203 printf("d="); 204 while(m) { 205 p=mtod(m,char *); 206 len=m->m_len; 207 printf("(%zu)",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 ERRnotlocked: 269 return 0; /* file become unlocked */ 270 case 183: 271 return EEXIST; 272 case ERRquota: 273 return EDQUOT; 274 } 275 break; 276 case ERRSRV: 277 switch (eno) { 278 case ERRerror: 279 return EINVAL; 280 case ERRbadpw: 281 case ERRpasswordExpired: 282 return EAUTH; 283 case ERRaccess: 284 return EACCES; 285 case ERRinvnid: 286 return ENETRESET; 287 case ERRinvnetname: 288 SMBERROR("NetBIOS name is invalid\n"); 289 return EAUTH; 290 case 3: /* reserved and returned */ 291 return EIO; 292 case ERRaccountExpired: 293 case ERRbadClient: 294 case ERRbadLogonTime: 295 return EPERM; 296 case ERRnosupport: 297 return EBADRPC; 298 } 299 break; 300 case ERRHRD: 301 switch (eno) { 302 case ERRnowrite: 303 return EROFS; 304 case ERRbadunit: 305 return ENODEV; 306 case ERRnotready: 307 case ERRbadcmd: 308 case ERRdata: 309 return EIO; 310 case ERRbadreq: 311 return EBADRPC; 312 case ERRbadshare: 313 return ETXTBSY; 314 case ERRlock: 315 return EDEADLK; 316 } 317 break; 318 } 319 SMBERROR("Unmapped error %d:%d\n", eclass, eno); 320 return EBADRPC; 321 } 322 323 static int 324 smb_copy_iconv(struct mbchain *mbp, c_caddr_t src, caddr_t dst, 325 size_t *srclen, size_t *dstlen) 326 { 327 int error; 328 size_t inlen = *srclen, outlen = *dstlen; 329 330 error = iconv_conv((struct iconv_drv*)mbp->mb_udata, &src, &inlen, 331 &dst, &outlen); 332 if (inlen != *srclen || outlen != *dstlen) { 333 *srclen -= inlen; 334 *dstlen -= outlen; 335 return 0; 336 } else 337 return error; 338 } 339 340 int 341 smb_put_dmem(struct mbchain *mbp, struct smb_vc *vcp, const char *src, 342 size_t size, int caseopt) 343 { 344 struct iconv_drv *dp = vcp->vc_toserver; 345 346 if (size == 0) 347 return 0; 348 if (dp == NULL) { 349 return mb_put_mem(mbp, src, size, MB_MSYSTEM); 350 } 351 mbp->mb_copy = smb_copy_iconv; 352 mbp->mb_udata = dp; 353 if (SMB_UNICODE_STRINGS(vcp)) 354 mb_put_padbyte(mbp); 355 return mb_put_mem(mbp, src, size, MB_MCUSTOM); 356 } 357 358 int 359 smb_put_dstring(struct mbchain *mbp, struct smb_vc *vcp, const char *src, 360 int caseopt) 361 { 362 int error; 363 364 error = smb_put_dmem(mbp, vcp, src, strlen(src), caseopt); 365 if (error) 366 return error; 367 if (SMB_UNICODE_STRINGS(vcp)) 368 return mb_put_uint16le(mbp, 0); 369 return mb_put_uint8(mbp, 0); 370 } 371 372 int 373 smb_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