1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2000-2001 Boris Popov 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 __FBSDID("$FreeBSD$"); 31 32 #include <sys/param.h> 33 #include <sys/systm.h> 34 #include <sys/endian.h> 35 #include <sys/kernel.h> 36 #include <sys/malloc.h> 37 #include <sys/proc.h> 38 #include <sys/lock.h> 39 #include <sys/sysctl.h> 40 #include <sys/socket.h> 41 #include <sys/signalvar.h> 42 #include <sys/mbuf.h> 43 44 #include <sys/iconv.h> 45 46 #include <netsmb/smb.h> 47 #include <netsmb/smb_conn.h> 48 #include <netsmb/smb_rq.h> 49 #include <netsmb/smb_subr.h> 50 51 static MALLOC_DEFINE(M_SMBDATA, "SMBDATA", "Misc netsmb data"); 52 static MALLOC_DEFINE(M_SMBSTR, "SMBSTR", "netsmb string data"); 53 MALLOC_DEFINE(M_SMBTEMP, "SMBTEMP", "Temp netsmb data"); 54 55 smb_unichar smb_unieol = 0; 56 57 void 58 smb_makescred(struct smb_cred *scred, struct thread *td, struct ucred *cred) 59 { 60 if (td) { 61 scred->scr_td = td; 62 scred->scr_cred = cred ? cred : td->td_ucred; 63 } else { 64 scred->scr_td = NULL; 65 scred->scr_cred = cred ? cred : NULL; 66 } 67 } 68 69 int 70 smb_td_intr(struct thread *td) 71 { 72 struct proc *p; 73 sigset_t tmpset; 74 75 if (td == NULL) 76 return 0; 77 78 p = td->td_proc; 79 PROC_LOCK(p); 80 tmpset = p->p_siglist; 81 SIGSETOR(tmpset, td->td_siglist); 82 SIGSETNAND(tmpset, td->td_sigmask); 83 mtx_lock(&p->p_sigacts->ps_mtx); 84 SIGSETNAND(tmpset, p->p_sigacts->ps_sigignore); 85 mtx_unlock(&p->p_sigacts->ps_mtx); 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 size_t 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, size_t maxlen) 114 { 115 char *p; 116 int error; 117 118 p = malloc(maxlen + 1, M_SMBSTR, M_WAITOK); 119 error = copyinstr(s, p, maxlen + 1, NULL); 120 if (error) { 121 free(p, M_SMBSTR); 122 return (NULL); 123 } 124 return p; 125 } 126 127 /* 128 * duplicate memory block from a user space. 129 */ 130 void * 131 smb_memdupin(void *umem, size_t len) 132 { 133 char *p; 134 135 if (len > 8 * 1024) 136 return NULL; 137 p = malloc(len, M_SMBSTR, M_WAITOK); 138 if (copyin(umem, p, len) == 0) 139 return p; 140 free(p, M_SMBSTR); 141 return NULL; 142 } 143 144 /* 145 * duplicate memory block in the kernel space. 146 */ 147 void * 148 smb_memdup(const void *umem, int len) 149 { 150 char *p; 151 152 if (len > 8 * 1024) 153 return NULL; 154 p = malloc(len, M_SMBSTR, M_WAITOK); 155 if (p == NULL) 156 return NULL; 157 bcopy(umem, p, len); 158 return p; 159 } 160 161 void 162 smb_strfree(char *s) 163 { 164 free(s, M_SMBSTR); 165 } 166 167 void 168 smb_memfree(void *s) 169 { 170 free(s, M_SMBSTR); 171 } 172 173 void * 174 smb_zmalloc(size_t size, struct malloc_type *type, int flags) 175 { 176 177 return malloc(size, type, flags | M_ZERO); 178 } 179 180 void 181 smb_strtouni(u_int16_t *dst, const char *src) 182 { 183 while (*src) { 184 *dst++ = htole16(*src++); 185 } 186 *dst = 0; 187 } 188 189 #ifdef SMB_SOCKETDATA_DEBUG 190 void 191 m_dumpm(struct mbuf *m) { 192 char *p; 193 size_t len; 194 printf("d="); 195 while(m) { 196 p=mtod(m,char *); 197 len=m->m_len; 198 printf("(%zu)",len); 199 while(len--){ 200 printf("%02x ",((int)*(p++)) & 0xff); 201 } 202 m=m->m_next; 203 } 204 printf("\n"); 205 } 206 #endif 207 208 int 209 smb_maperror(int eclass, int eno) 210 { 211 if (eclass == 0 && eno == 0) 212 return 0; 213 switch (eclass) { 214 case ERRDOS: 215 switch (eno) { 216 case ERRbadfunc: 217 case ERRbadmcb: 218 case ERRbadenv: 219 case ERRbadformat: 220 case ERRrmuns: 221 return EINVAL; 222 case ERRbadfile: 223 case ERRbadpath: 224 case ERRremcd: 225 case 66: /* nt returns it when share not available */ 226 case 67: /* observed from nt4sp6 when sharename wrong */ 227 return ENOENT; 228 case ERRnofids: 229 return EMFILE; 230 case ERRnoaccess: 231 case ERRbadshare: 232 return EACCES; 233 case ERRbadfid: 234 return EBADF; 235 case ERRnomem: 236 return ENOMEM; /* actually remote no mem... */ 237 case ERRbadmem: 238 return EFAULT; 239 case ERRbadaccess: 240 return EACCES; 241 case ERRbaddata: 242 return E2BIG; 243 case ERRbaddrive: 244 case ERRnotready: /* nt */ 245 return ENXIO; 246 case ERRdiffdevice: 247 return EXDEV; 248 case ERRnofiles: 249 return 0; /* eeof ? */ 250 return ETXTBSY; 251 case ERRlock: 252 return EDEADLK; 253 case ERRfilexists: 254 return EEXIST; 255 case 123: /* dunno what is it, but samba maps as noent */ 256 return ENOENT; 257 case 145: /* samba */ 258 return ENOTEMPTY; 259 case ERRnotlocked: 260 return 0; /* file become unlocked */ 261 case 183: 262 return EEXIST; 263 case ERRquota: 264 return EDQUOT; 265 } 266 break; 267 case ERRSRV: 268 switch (eno) { 269 case ERRerror: 270 return EINVAL; 271 case ERRbadpw: 272 case ERRpasswordExpired: 273 return EAUTH; 274 case ERRaccess: 275 return EACCES; 276 case ERRinvnid: 277 return ENETRESET; 278 case ERRinvnetname: 279 SMBERROR("NetBIOS name is invalid\n"); 280 return EAUTH; 281 case 3: /* reserved and returned */ 282 return EIO; 283 case ERRaccountExpired: 284 case ERRbadClient: 285 case ERRbadLogonTime: 286 return EPERM; 287 case ERRnosupport: 288 return EBADRPC; 289 } 290 break; 291 case ERRHRD: 292 switch (eno) { 293 case ERRnowrite: 294 return EROFS; 295 case ERRbadunit: 296 return ENODEV; 297 case ERRnotready: 298 case ERRbadcmd: 299 case ERRdata: 300 return EIO; 301 case ERRbadreq: 302 return EBADRPC; 303 case ERRbadshare: 304 return ETXTBSY; 305 case ERRlock: 306 return EDEADLK; 307 } 308 break; 309 } 310 SMBERROR("Unmapped error %d:%d\n", eclass, eno); 311 return EBADRPC; 312 } 313 314 static int 315 smb_copy_iconv(struct mbchain *mbp, c_caddr_t src, caddr_t dst, 316 size_t *srclen, size_t *dstlen) 317 { 318 int error; 319 size_t inlen = *srclen, outlen = *dstlen; 320 321 error = iconv_conv((struct iconv_drv*)mbp->mb_udata, &src, &inlen, 322 &dst, &outlen); 323 if (inlen != *srclen || outlen != *dstlen) { 324 *srclen -= inlen; 325 *dstlen -= outlen; 326 return 0; 327 } else 328 return error; 329 } 330 331 int 332 smb_put_dmem(struct mbchain *mbp, struct smb_vc *vcp, const char *src, 333 size_t size, int caseopt) 334 { 335 struct iconv_drv *dp = vcp->vc_toserver; 336 337 if (size == 0) 338 return 0; 339 if (dp == NULL) { 340 return mb_put_mem(mbp, src, size, MB_MSYSTEM); 341 } 342 mbp->mb_copy = smb_copy_iconv; 343 mbp->mb_udata = dp; 344 if (SMB_UNICODE_STRINGS(vcp)) 345 mb_put_padbyte(mbp); 346 return mb_put_mem(mbp, src, size, MB_MCUSTOM); 347 } 348 349 int 350 smb_put_dstring(struct mbchain *mbp, struct smb_vc *vcp, const char *src, 351 int caseopt) 352 { 353 int error; 354 355 error = smb_put_dmem(mbp, vcp, src, strlen(src), caseopt); 356 if (error) 357 return error; 358 if (SMB_UNICODE_STRINGS(vcp)) 359 return mb_put_uint16le(mbp, 0); 360 return mb_put_uint8(mbp, 0); 361 } 362 363 int 364 smb_put_asunistring(struct smb_rq *rqp, const char *src) 365 { 366 struct mbchain *mbp = &rqp->sr_rq; 367 struct iconv_drv *dp = rqp->sr_vc->vc_toserver; 368 u_char c; 369 int error; 370 371 while (*src) { 372 iconv_convmem(dp, &c, src++, 1); 373 error = mb_put_uint16le(mbp, c); 374 if (error) 375 return error; 376 } 377 return mb_put_uint16le(mbp, 0); 378 } 379