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 MALLOC_DEFINE(M_SMBDATA, "SMBDATA", "Misc netsmb data"); 50 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 int 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, int maxlen) 112 { 113 char *p, bt; 114 int error, len = 0; 115 116 for (p = s; ;p++) { 117 if (copyin(p, &bt, 1)) 118 return NULL; 119 len++; 120 if (maxlen && len > maxlen) 121 return NULL; 122 if (bt == 0) 123 break; 124 } 125 p = malloc(len, M_SMBSTR, M_WAITOK); 126 error = copyin(s, p, len); 127 if (error) { 128 free(p, M_SMBSTR); 129 return (NULL); 130 } 131 return p; 132 } 133 134 /* 135 * duplicate memory block from a user space. 136 */ 137 void * 138 smb_memdupin(void *umem, int len) 139 { 140 char *p; 141 142 if (len > 8 * 1024) 143 return NULL; 144 p = malloc(len, M_SMBSTR, M_WAITOK); 145 if (copyin(umem, p, len) == 0) 146 return p; 147 free(p, M_SMBSTR); 148 return NULL; 149 } 150 151 /* 152 * duplicate memory block in the kernel space. 153 */ 154 void * 155 smb_memdup(const void *umem, int len) 156 { 157 char *p; 158 159 if (len > 8 * 1024) 160 return NULL; 161 p = malloc(len, M_SMBSTR, M_WAITOK); 162 if (p == NULL) 163 return NULL; 164 bcopy(umem, p, len); 165 return p; 166 } 167 168 void 169 smb_strfree(char *s) 170 { 171 free(s, M_SMBSTR); 172 } 173 174 void 175 smb_memfree(void *s) 176 { 177 free(s, M_SMBSTR); 178 } 179 180 void * 181 smb_zmalloc(unsigned long size, struct malloc_type *type, int flags) 182 { 183 184 return malloc(size, type, flags | M_ZERO); 185 } 186 187 void 188 smb_strtouni(u_int16_t *dst, const char *src) 189 { 190 while (*src) { 191 *dst++ = htole16(*src++); 192 } 193 *dst = 0; 194 } 195 196 #ifdef SMB_SOCKETDATA_DEBUG 197 void 198 m_dumpm(struct mbuf *m) { 199 char *p; 200 int len; 201 printf("d="); 202 while(m) { 203 p=mtod(m,char *); 204 len=m->m_len; 205 printf("(%d)",len); 206 while(len--){ 207 printf("%02x ",((int)*(p++)) & 0xff); 208 } 209 m=m->m_next; 210 }; 211 printf("\n"); 212 } 213 #endif 214 215 int 216 smb_maperror(int eclass, int eno) 217 { 218 if (eclass == 0 && eno == 0) 219 return 0; 220 switch (eclass) { 221 case ERRDOS: 222 switch (eno) { 223 case ERRbadfunc: 224 case ERRbadmcb: 225 case ERRbadenv: 226 case ERRbadformat: 227 case ERRrmuns: 228 return EINVAL; 229 case ERRbadfile: 230 case ERRbadpath: 231 case ERRremcd: 232 case 66: /* nt returns it when share not available */ 233 case 67: /* observed from nt4sp6 when sharename wrong */ 234 return ENOENT; 235 case ERRnofids: 236 return EMFILE; 237 case ERRnoaccess: 238 case ERRbadshare: 239 return EACCES; 240 case ERRbadfid: 241 return EBADF; 242 case ERRnomem: 243 return ENOMEM; /* actually remote no mem... */ 244 case ERRbadmem: 245 return EFAULT; 246 case ERRbadaccess: 247 return EACCES; 248 case ERRbaddata: 249 return E2BIG; 250 case ERRbaddrive: 251 case ERRnotready: /* nt */ 252 return ENXIO; 253 case ERRdiffdevice: 254 return EXDEV; 255 case ERRnofiles: 256 return 0; /* eeof ? */ 257 return ETXTBSY; 258 case ERRlock: 259 return EDEADLK; 260 case ERRfilexists: 261 return EEXIST; 262 case 123: /* dunno what is it, but samba maps as noent */ 263 return ENOENT; 264 case 145: /* samba */ 265 return ENOTEMPTY; 266 case ERRnotlocked: 267 return 0; /* file become unlocked */ 268 case 183: 269 return EEXIST; 270 case ERRquota: 271 return EDQUOT; 272 } 273 break; 274 case ERRSRV: 275 switch (eno) { 276 case ERRerror: 277 return EINVAL; 278 case ERRbadpw: 279 case ERRpasswordExpired: 280 return EAUTH; 281 case ERRaccess: 282 return EACCES; 283 case ERRinvnid: 284 return ENETRESET; 285 case ERRinvnetname: 286 SMBERROR("NetBIOS name is invalid\n"); 287 return EAUTH; 288 case 3: /* reserved and returned */ 289 return EIO; 290 case ERRaccountExpired: 291 case ERRbadClient: 292 case ERRbadLogonTime: 293 return EPERM; 294 case ERRnosupport: 295 return EBADRPC; 296 } 297 break; 298 case ERRHRD: 299 switch (eno) { 300 case ERRnowrite: 301 return EROFS; 302 case ERRbadunit: 303 return ENODEV; 304 case ERRnotready: 305 case ERRbadcmd: 306 case ERRdata: 307 return EIO; 308 case ERRbadreq: 309 return EBADRPC; 310 case ERRbadshare: 311 return ETXTBSY; 312 case ERRlock: 313 return EDEADLK; 314 } 315 break; 316 } 317 SMBERROR("Unmapped error %d:%d\n", eclass, eno); 318 return EBADRPC; 319 } 320 321 static int 322 smb_copy_iconv(struct mbchain *mbp, c_caddr_t src, caddr_t dst, 323 size_t *srclen, size_t *dstlen) 324 { 325 int error; 326 size_t inlen = *srclen, outlen = *dstlen; 327 328 error = iconv_conv((struct iconv_drv*)mbp->mb_udata, &src, &inlen, 329 &dst, &outlen); 330 if (inlen != *srclen || outlen != *dstlen) { 331 *srclen -= inlen; 332 *dstlen -= outlen; 333 return 0; 334 } else 335 return error; 336 } 337 338 int 339 smb_put_dmem(struct mbchain *mbp, struct smb_vc *vcp, const char *src, 340 int size, int caseopt) 341 { 342 struct iconv_drv *dp = vcp->vc_toserver; 343 344 if (size == 0) 345 return 0; 346 if (dp == NULL) { 347 return mb_put_mem(mbp, src, size, MB_MSYSTEM); 348 } 349 mbp->mb_copy = smb_copy_iconv; 350 mbp->mb_udata = dp; 351 return mb_put_mem(mbp, src, size, MB_MCUSTOM); 352 } 353 354 int 355 smb_put_dstring(struct mbchain *mbp, struct smb_vc *vcp, const char *src, 356 int caseopt) 357 { 358 int error; 359 360 error = smb_put_dmem(mbp, vcp, src, strlen(src), caseopt); 361 if (error) 362 return error; 363 return mb_put_uint8(mbp, 0); 364 } 365 366 int 367 smb_put_asunistring(struct smb_rq *rqp, const char *src) 368 { 369 struct mbchain *mbp = &rqp->sr_rq; 370 struct iconv_drv *dp = rqp->sr_vc->vc_toserver; 371 u_char c; 372 int error; 373 374 while (*src) { 375 iconv_convmem(dp, &c, src++, 1); 376 error = mb_put_uint16le(mbp, c); 377 if (error) 378 return error; 379 } 380 return mb_put_uint16le(mbp, 0); 381 } 382