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 bcopy(umem, p, len); 153 return p; 154 } 155 156 void 157 smb_strfree(char *s) 158 { 159 free(s, M_SMBSTR); 160 } 161 162 void 163 smb_memfree(void *s) 164 { 165 free(s, M_SMBSTR); 166 } 167 168 void * 169 smb_zmalloc(size_t size, struct malloc_type *type, int flags) 170 { 171 172 return malloc(size, type, flags | M_ZERO); 173 } 174 175 void 176 smb_strtouni(u_int16_t *dst, const char *src) 177 { 178 while (*src) { 179 *dst++ = htole16(*src++); 180 } 181 *dst = 0; 182 } 183 184 #ifdef SMB_SOCKETDATA_DEBUG 185 void 186 m_dumpm(struct mbuf *m) { 187 char *p; 188 size_t len; 189 printf("d="); 190 while(m) { 191 p=mtod(m,char *); 192 len=m->m_len; 193 printf("(%zu)",len); 194 while(len--){ 195 printf("%02x ",((int)*(p++)) & 0xff); 196 } 197 m=m->m_next; 198 } 199 printf("\n"); 200 } 201 #endif 202 203 int 204 smb_maperror(int eclass, int eno) 205 { 206 if (eclass == 0 && eno == 0) 207 return 0; 208 switch (eclass) { 209 case ERRDOS: 210 switch (eno) { 211 case ERRbadfunc: 212 case ERRbadmcb: 213 case ERRbadenv: 214 case ERRbadformat: 215 case ERRrmuns: 216 return EINVAL; 217 case ERRbadfile: 218 case ERRbadpath: 219 case ERRremcd: 220 case 66: /* nt returns it when share not available */ 221 case 67: /* observed from nt4sp6 when sharename wrong */ 222 return ENOENT; 223 case ERRnofids: 224 return EMFILE; 225 case ERRnoaccess: 226 case ERRbadshare: 227 return EACCES; 228 case ERRbadfid: 229 return EBADF; 230 case ERRnomem: 231 return ENOMEM; /* actually remote no mem... */ 232 case ERRbadmem: 233 return EFAULT; 234 case ERRbadaccess: 235 return EACCES; 236 case ERRbaddata: 237 return E2BIG; 238 case ERRbaddrive: 239 case ERRnotready: /* nt */ 240 return ENXIO; 241 case ERRdiffdevice: 242 return EXDEV; 243 case ERRnofiles: 244 return 0; /* eeof ? */ 245 return ETXTBSY; 246 case ERRlock: 247 return EDEADLK; 248 case ERRfilexists: 249 return EEXIST; 250 case 123: /* dunno what is it, but samba maps as noent */ 251 return ENOENT; 252 case 145: /* samba */ 253 return ENOTEMPTY; 254 case ERRnotlocked: 255 return 0; /* file become unlocked */ 256 case 183: 257 return EEXIST; 258 case ERRquota: 259 return EDQUOT; 260 } 261 break; 262 case ERRSRV: 263 switch (eno) { 264 case ERRerror: 265 return EINVAL; 266 case ERRbadpw: 267 case ERRpasswordExpired: 268 return EAUTH; 269 case ERRaccess: 270 return EACCES; 271 case ERRinvnid: 272 return ENETRESET; 273 case ERRinvnetname: 274 SMBERROR("NetBIOS name is invalid\n"); 275 return EAUTH; 276 case 3: /* reserved and returned */ 277 return EIO; 278 case ERRaccountExpired: 279 case ERRbadClient: 280 case ERRbadLogonTime: 281 return EPERM; 282 case ERRnosupport: 283 return EBADRPC; 284 } 285 break; 286 case ERRHRD: 287 switch (eno) { 288 case ERRnowrite: 289 return EROFS; 290 case ERRbadunit: 291 return ENODEV; 292 case ERRnotready: 293 case ERRbadcmd: 294 case ERRdata: 295 return EIO; 296 case ERRbadreq: 297 return EBADRPC; 298 case ERRbadshare: 299 return ETXTBSY; 300 case ERRlock: 301 return EDEADLK; 302 } 303 break; 304 } 305 SMBERROR("Unmapped error %d:%d\n", eclass, eno); 306 return EBADRPC; 307 } 308 309 static int 310 smb_copy_iconv(struct mbchain *mbp, c_caddr_t src, caddr_t dst, 311 size_t *srclen, size_t *dstlen) 312 { 313 int error; 314 size_t inlen = *srclen, outlen = *dstlen; 315 316 error = iconv_conv((struct iconv_drv*)mbp->mb_udata, &src, &inlen, 317 &dst, &outlen); 318 if (inlen != *srclen || outlen != *dstlen) { 319 *srclen -= inlen; 320 *dstlen -= outlen; 321 return 0; 322 } else 323 return error; 324 } 325 326 int 327 smb_put_dmem(struct mbchain *mbp, struct smb_vc *vcp, const char *src, 328 size_t size, int caseopt) 329 { 330 struct iconv_drv *dp = vcp->vc_toserver; 331 332 if (size == 0) 333 return 0; 334 if (dp == NULL) { 335 return mb_put_mem(mbp, src, size, MB_MSYSTEM); 336 } 337 mbp->mb_copy = smb_copy_iconv; 338 mbp->mb_udata = dp; 339 if (SMB_UNICODE_STRINGS(vcp)) 340 mb_put_padbyte(mbp); 341 return mb_put_mem(mbp, src, size, MB_MCUSTOM); 342 } 343 344 int 345 smb_put_dstring(struct mbchain *mbp, struct smb_vc *vcp, const char *src, 346 int caseopt) 347 { 348 int error; 349 350 error = smb_put_dmem(mbp, vcp, src, strlen(src), caseopt); 351 if (error) 352 return error; 353 if (SMB_UNICODE_STRINGS(vcp)) 354 return mb_put_uint16le(mbp, 0); 355 return mb_put_uint8(mbp, 0); 356 } 357 358 int 359 smb_put_asunistring(struct smb_rq *rqp, const char *src) 360 { 361 struct mbchain *mbp = &rqp->sr_rq; 362 struct iconv_drv *dp = rqp->sr_vc->vc_toserver; 363 u_char c; 364 int error; 365 366 while (*src) { 367 iconv_convmem(dp, &c, src++, 1); 368 error = mb_put_uint16le(mbp, c); 369 if (error) 370 return error; 371 } 372 return mb_put_uint16le(mbp, 0); 373 } 374