1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 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 #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; 114 int error; 115 116 p = malloc(maxlen + 1, M_SMBSTR, M_WAITOK); 117 error = copyinstr(s, p, maxlen + 1, NULL); 118 if (error) { 119 free(p, M_SMBSTR); 120 return (NULL); 121 } 122 return p; 123 } 124 125 /* 126 * duplicate memory block from a user space. 127 */ 128 void * 129 smb_memdupin(void *umem, size_t len) 130 { 131 char *p; 132 133 if (len > 8 * 1024) 134 return NULL; 135 p = malloc(len, M_SMBSTR, M_WAITOK); 136 if (copyin(umem, p, len) == 0) 137 return p; 138 free(p, M_SMBSTR); 139 return NULL; 140 } 141 142 /* 143 * duplicate memory block in the kernel space. 144 */ 145 void * 146 smb_memdup(const void *umem, int len) 147 { 148 char *p; 149 150 if (len > 8 * 1024) 151 return NULL; 152 p = malloc(len, M_SMBSTR, M_WAITOK); 153 if (p == NULL) 154 return NULL; 155 bcopy(umem, p, len); 156 return p; 157 } 158 159 void 160 smb_strfree(char *s) 161 { 162 free(s, M_SMBSTR); 163 } 164 165 void 166 smb_memfree(void *s) 167 { 168 free(s, M_SMBSTR); 169 } 170 171 void * 172 smb_zmalloc(size_t size, struct malloc_type *type, int flags) 173 { 174 175 return malloc(size, type, flags | M_ZERO); 176 } 177 178 void 179 smb_strtouni(u_int16_t *dst, const char *src) 180 { 181 while (*src) { 182 *dst++ = htole16(*src++); 183 } 184 *dst = 0; 185 } 186 187 #ifdef SMB_SOCKETDATA_DEBUG 188 void 189 m_dumpm(struct mbuf *m) { 190 char *p; 191 size_t len; 192 printf("d="); 193 while(m) { 194 p=mtod(m,char *); 195 len=m->m_len; 196 printf("(%zu)",len); 197 while(len--){ 198 printf("%02x ",((int)*(p++)) & 0xff); 199 } 200 m=m->m_next; 201 } 202 printf("\n"); 203 } 204 #endif 205 206 int 207 smb_maperror(int eclass, int eno) 208 { 209 if (eclass == 0 && eno == 0) 210 return 0; 211 switch (eclass) { 212 case ERRDOS: 213 switch (eno) { 214 case ERRbadfunc: 215 case ERRbadmcb: 216 case ERRbadenv: 217 case ERRbadformat: 218 case ERRrmuns: 219 return EINVAL; 220 case ERRbadfile: 221 case ERRbadpath: 222 case ERRremcd: 223 case 66: /* nt returns it when share not available */ 224 case 67: /* observed from nt4sp6 when sharename wrong */ 225 return ENOENT; 226 case ERRnofids: 227 return EMFILE; 228 case ERRnoaccess: 229 case ERRbadshare: 230 return EACCES; 231 case ERRbadfid: 232 return EBADF; 233 case ERRnomem: 234 return ENOMEM; /* actually remote no mem... */ 235 case ERRbadmem: 236 return EFAULT; 237 case ERRbadaccess: 238 return EACCES; 239 case ERRbaddata: 240 return E2BIG; 241 case ERRbaddrive: 242 case ERRnotready: /* nt */ 243 return ENXIO; 244 case ERRdiffdevice: 245 return EXDEV; 246 case ERRnofiles: 247 return 0; /* eeof ? */ 248 return ETXTBSY; 249 case ERRlock: 250 return EDEADLK; 251 case ERRfilexists: 252 return EEXIST; 253 case 123: /* dunno what is it, but samba maps as noent */ 254 return ENOENT; 255 case 145: /* samba */ 256 return ENOTEMPTY; 257 case ERRnotlocked: 258 return 0; /* file become unlocked */ 259 case 183: 260 return EEXIST; 261 case ERRquota: 262 return EDQUOT; 263 } 264 break; 265 case ERRSRV: 266 switch (eno) { 267 case ERRerror: 268 return EINVAL; 269 case ERRbadpw: 270 case ERRpasswordExpired: 271 return EAUTH; 272 case ERRaccess: 273 return EACCES; 274 case ERRinvnid: 275 return ENETRESET; 276 case ERRinvnetname: 277 SMBERROR("NetBIOS name is invalid\n"); 278 return EAUTH; 279 case 3: /* reserved and returned */ 280 return EIO; 281 case ERRaccountExpired: 282 case ERRbadClient: 283 case ERRbadLogonTime: 284 return EPERM; 285 case ERRnosupport: 286 return EBADRPC; 287 } 288 break; 289 case ERRHRD: 290 switch (eno) { 291 case ERRnowrite: 292 return EROFS; 293 case ERRbadunit: 294 return ENODEV; 295 case ERRnotready: 296 case ERRbadcmd: 297 case ERRdata: 298 return EIO; 299 case ERRbadreq: 300 return EBADRPC; 301 case ERRbadshare: 302 return ETXTBSY; 303 case ERRlock: 304 return EDEADLK; 305 } 306 break; 307 } 308 SMBERROR("Unmapped error %d:%d\n", eclass, eno); 309 return EBADRPC; 310 } 311 312 static int 313 smb_copy_iconv(struct mbchain *mbp, c_caddr_t src, caddr_t dst, 314 size_t *srclen, size_t *dstlen) 315 { 316 int error; 317 size_t inlen = *srclen, outlen = *dstlen; 318 319 error = iconv_conv((struct iconv_drv*)mbp->mb_udata, &src, &inlen, 320 &dst, &outlen); 321 if (inlen != *srclen || outlen != *dstlen) { 322 *srclen -= inlen; 323 *dstlen -= outlen; 324 return 0; 325 } else 326 return error; 327 } 328 329 int 330 smb_put_dmem(struct mbchain *mbp, struct smb_vc *vcp, const char *src, 331 size_t 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 if (SMB_UNICODE_STRINGS(vcp)) 343 mb_put_padbyte(mbp); 344 return mb_put_mem(mbp, src, size, MB_MCUSTOM); 345 } 346 347 int 348 smb_put_dstring(struct mbchain *mbp, struct smb_vc *vcp, const char *src, 349 int caseopt) 350 { 351 int error; 352 353 error = smb_put_dmem(mbp, vcp, src, strlen(src), caseopt); 354 if (error) 355 return error; 356 if (SMB_UNICODE_STRINGS(vcp)) 357 return mb_put_uint16le(mbp, 0); 358 return mb_put_uint8(mbp, 0); 359 } 360 361 int 362 smb_put_asunistring(struct smb_rq *rqp, const char *src) 363 { 364 struct mbchain *mbp = &rqp->sr_rq; 365 struct iconv_drv *dp = rqp->sr_vc->vc_toserver; 366 u_char c; 367 int error; 368 369 while (*src) { 370 iconv_convmem(dp, &c, src++, 1); 371 error = mb_put_uint16le(mbp, c); 372 if (error) 373 return error; 374 } 375 return mb_put_uint16le(mbp, 0); 376 } 377