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/param.h> 30 #include <sys/systm.h> 31 #include <sys/endian.h> 32 #include <sys/kernel.h> 33 #include <sys/malloc.h> 34 #include <sys/proc.h> 35 #include <sys/lock.h> 36 #include <sys/sysctl.h> 37 #include <sys/socket.h> 38 #include <sys/signalvar.h> 39 #include <sys/mbuf.h> 40 41 #include <sys/iconv.h> 42 43 #include <netsmb/smb.h> 44 #include <netsmb/smb_conn.h> 45 #include <netsmb/smb_rq.h> 46 #include <netsmb/smb_subr.h> 47 48 static MALLOC_DEFINE(M_SMBDATA, "SMBDATA", "Misc netsmb data"); 49 static MALLOC_DEFINE(M_SMBSTR, "SMBSTR", "netsmb string data"); 50 MALLOC_DEFINE(M_SMBTEMP, "SMBTEMP", "Temp netsmb data"); 51 52 smb_unichar smb_unieol = 0; 53 54 void 55 smb_makescred(struct smb_cred *scred, struct thread *td, struct ucred *cred) 56 { 57 if (td) { 58 scred->scr_td = td; 59 scred->scr_cred = cred ? cred : td->td_ucred; 60 } else { 61 scred->scr_td = NULL; 62 scred->scr_cred = cred ? cred : NULL; 63 } 64 } 65 66 int 67 smb_td_intr(struct thread *td) 68 { 69 struct proc *p; 70 sigset_t tmpset; 71 72 if (td == NULL) 73 return 0; 74 75 p = td->td_proc; 76 PROC_LOCK(p); 77 tmpset = p->p_siglist; 78 SIGSETOR(tmpset, td->td_siglist); 79 SIGSETNAND(tmpset, td->td_sigmask); 80 mtx_lock(&p->p_sigacts->ps_mtx); 81 SIGSETNAND(tmpset, p->p_sigacts->ps_sigignore); 82 mtx_unlock(&p->p_sigacts->ps_mtx); 83 if (SIGNOTEMPTY(td->td_siglist) && SMB_SIGMASK(tmpset)) { 84 PROC_UNLOCK(p); 85 return EINTR; 86 } 87 PROC_UNLOCK(p); 88 return 0; 89 } 90 91 char * 92 smb_strdup(const char *s) 93 { 94 char *p; 95 size_t len; 96 97 len = s ? strlen(s) + 1 : 1; 98 p = malloc(len, M_SMBSTR, M_WAITOK); 99 if (s) 100 bcopy(s, p, len); 101 else 102 *p = 0; 103 return p; 104 } 105 106 /* 107 * duplicate string from a user space. 108 */ 109 char * 110 smb_strdupin(char *s, size_t maxlen) 111 { 112 char *p; 113 int error; 114 115 p = malloc(maxlen + 1, M_SMBSTR, M_WAITOK); 116 error = copyinstr(s, p, maxlen + 1, NULL); 117 if (error) { 118 free(p, M_SMBSTR); 119 return (NULL); 120 } 121 return p; 122 } 123 124 /* 125 * duplicate memory block from a user space. 126 */ 127 void * 128 smb_memdupin(void *umem, size_t len) 129 { 130 char *p; 131 132 if (len > 8 * 1024) 133 return NULL; 134 p = malloc(len, M_SMBSTR, M_WAITOK); 135 if (copyin(umem, p, len) == 0) 136 return p; 137 free(p, M_SMBSTR); 138 return NULL; 139 } 140 141 /* 142 * duplicate memory block in the kernel space. 143 */ 144 void * 145 smb_memdup(const void *umem, int len) 146 { 147 char *p; 148 149 if (len > 8 * 1024) 150 return NULL; 151 p = malloc(len, M_SMBSTR, M_WAITOK); 152 if (p == NULL) 153 return NULL; 154 bcopy(umem, p, len); 155 return p; 156 } 157 158 void 159 smb_strfree(char *s) 160 { 161 free(s, M_SMBSTR); 162 } 163 164 void 165 smb_memfree(void *s) 166 { 167 free(s, M_SMBSTR); 168 } 169 170 void * 171 smb_zmalloc(size_t size, struct malloc_type *type, int flags) 172 { 173 174 return malloc(size, type, flags | M_ZERO); 175 } 176 177 void 178 smb_strtouni(u_int16_t *dst, const char *src) 179 { 180 while (*src) { 181 *dst++ = htole16(*src++); 182 } 183 *dst = 0; 184 } 185 186 #ifdef SMB_SOCKETDATA_DEBUG 187 void 188 m_dumpm(struct mbuf *m) { 189 char *p; 190 size_t len; 191 printf("d="); 192 while(m) { 193 p=mtod(m,char *); 194 len=m->m_len; 195 printf("(%zu)",len); 196 while(len--){ 197 printf("%02x ",((int)*(p++)) & 0xff); 198 } 199 m=m->m_next; 200 } 201 printf("\n"); 202 } 203 #endif 204 205 int 206 smb_maperror(int eclass, int eno) 207 { 208 if (eclass == 0 && eno == 0) 209 return 0; 210 switch (eclass) { 211 case ERRDOS: 212 switch (eno) { 213 case ERRbadfunc: 214 case ERRbadmcb: 215 case ERRbadenv: 216 case ERRbadformat: 217 case ERRrmuns: 218 return EINVAL; 219 case ERRbadfile: 220 case ERRbadpath: 221 case ERRremcd: 222 case 66: /* nt returns it when share not available */ 223 case 67: /* observed from nt4sp6 when sharename wrong */ 224 return ENOENT; 225 case ERRnofids: 226 return EMFILE; 227 case ERRnoaccess: 228 case ERRbadshare: 229 return EACCES; 230 case ERRbadfid: 231 return EBADF; 232 case ERRnomem: 233 return ENOMEM; /* actually remote no mem... */ 234 case ERRbadmem: 235 return EFAULT; 236 case ERRbadaccess: 237 return EACCES; 238 case ERRbaddata: 239 return E2BIG; 240 case ERRbaddrive: 241 case ERRnotready: /* nt */ 242 return ENXIO; 243 case ERRdiffdevice: 244 return EXDEV; 245 case ERRnofiles: 246 return 0; /* eeof ? */ 247 return ETXTBSY; 248 case ERRlock: 249 return EDEADLK; 250 case ERRfilexists: 251 return EEXIST; 252 case 123: /* dunno what is it, but samba maps as noent */ 253 return ENOENT; 254 case 145: /* samba */ 255 return ENOTEMPTY; 256 case ERRnotlocked: 257 return 0; /* file become unlocked */ 258 case 183: 259 return EEXIST; 260 case ERRquota: 261 return EDQUOT; 262 } 263 break; 264 case ERRSRV: 265 switch (eno) { 266 case ERRerror: 267 return EINVAL; 268 case ERRbadpw: 269 case ERRpasswordExpired: 270 return EAUTH; 271 case ERRaccess: 272 return EACCES; 273 case ERRinvnid: 274 return ENETRESET; 275 case ERRinvnetname: 276 SMBERROR("NetBIOS name is invalid\n"); 277 return EAUTH; 278 case 3: /* reserved and returned */ 279 return EIO; 280 case ERRaccountExpired: 281 case ERRbadClient: 282 case ERRbadLogonTime: 283 return EPERM; 284 case ERRnosupport: 285 return EBADRPC; 286 } 287 break; 288 case ERRHRD: 289 switch (eno) { 290 case ERRnowrite: 291 return EROFS; 292 case ERRbadunit: 293 return ENODEV; 294 case ERRnotready: 295 case ERRbadcmd: 296 case ERRdata: 297 return EIO; 298 case ERRbadreq: 299 return EBADRPC; 300 case ERRbadshare: 301 return ETXTBSY; 302 case ERRlock: 303 return EDEADLK; 304 } 305 break; 306 } 307 SMBERROR("Unmapped error %d:%d\n", eclass, eno); 308 return EBADRPC; 309 } 310 311 static int 312 smb_copy_iconv(struct mbchain *mbp, c_caddr_t src, caddr_t dst, 313 size_t *srclen, size_t *dstlen) 314 { 315 int error; 316 size_t inlen = *srclen, outlen = *dstlen; 317 318 error = iconv_conv((struct iconv_drv*)mbp->mb_udata, &src, &inlen, 319 &dst, &outlen); 320 if (inlen != *srclen || outlen != *dstlen) { 321 *srclen -= inlen; 322 *dstlen -= outlen; 323 return 0; 324 } else 325 return error; 326 } 327 328 int 329 smb_put_dmem(struct mbchain *mbp, struct smb_vc *vcp, const char *src, 330 size_t size, int caseopt) 331 { 332 struct iconv_drv *dp = vcp->vc_toserver; 333 334 if (size == 0) 335 return 0; 336 if (dp == NULL) { 337 return mb_put_mem(mbp, src, size, MB_MSYSTEM); 338 } 339 mbp->mb_copy = smb_copy_iconv; 340 mbp->mb_udata = dp; 341 if (SMB_UNICODE_STRINGS(vcp)) 342 mb_put_padbyte(mbp); 343 return mb_put_mem(mbp, src, size, MB_MCUSTOM); 344 } 345 346 int 347 smb_put_dstring(struct mbchain *mbp, struct smb_vc *vcp, const char *src, 348 int caseopt) 349 { 350 int error; 351 352 error = smb_put_dmem(mbp, vcp, src, strlen(src), caseopt); 353 if (error) 354 return error; 355 if (SMB_UNICODE_STRINGS(vcp)) 356 return mb_put_uint16le(mbp, 0); 357 return mb_put_uint8(mbp, 0); 358 } 359 360 int 361 smb_put_asunistring(struct smb_rq *rqp, const char *src) 362 { 363 struct mbchain *mbp = &rqp->sr_rq; 364 struct iconv_drv *dp = rqp->sr_vc->vc_toserver; 365 u_char c; 366 int error; 367 368 while (*src) { 369 iconv_convmem(dp, &c, src++, 1); 370 error = mb_put_uint16le(mbp, c); 371 if (error) 372 return error; 373 } 374 return mb_put_uint16le(mbp, 0); 375 } 376