| 1 | /* $NetBSD: smb_smb.c,v 1.33 2012/11/24 19:48:25 nakayama Exp $ */ |
| 2 | |
| 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 | * 3. All advertising materials mentioning features or use of this software |
| 16 | * must display the following acknowledgement: |
| 17 | * This product includes software developed by Boris Popov. |
| 18 | * 4. Neither the name of the author nor the names of any co-contributors |
| 19 | * may be used to endorse or promote products derived from this software |
| 20 | * without specific prior written permission. |
| 21 | * |
| 22 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
| 23 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 24 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 25 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| 26 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 27 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 28 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 29 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 30 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 31 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 32 | * SUCH DAMAGE. |
| 33 | * |
| 34 | * FreeBSD: src/sys/netsmb/smb_smb.c,v 1.10 2003/02/19 05:47:38 imp Exp |
| 35 | */ |
| 36 | /* |
| 37 | * various SMB requests. Most of the routines merely packs data into mbufs. |
| 38 | */ |
| 39 | |
| 40 | #include <sys/cdefs.h> |
| 41 | __KERNEL_RCSID(0, "$NetBSD: smb_smb.c,v 1.33 2012/11/24 19:48:25 nakayama Exp $" ); |
| 42 | |
| 43 | #include <sys/param.h> |
| 44 | #include <sys/systm.h> |
| 45 | #include <sys/kernel.h> |
| 46 | #include <sys/malloc.h> |
| 47 | #include <sys/proc.h> |
| 48 | #include <sys/lock.h> |
| 49 | #include <sys/sysctl.h> |
| 50 | #include <sys/socket.h> |
| 51 | #include <sys/uio.h> |
| 52 | |
| 53 | #include <netsmb/iconv.h> |
| 54 | |
| 55 | #include <netsmb/smb.h> |
| 56 | #include <netsmb/smb_subr.h> |
| 57 | #include <netsmb/smb_rq.h> |
| 58 | #include <netsmb/smb_conn.h> |
| 59 | #include <netsmb/smb_tran.h> |
| 60 | |
| 61 | struct smb_dialect { |
| 62 | int d_id; |
| 63 | const char *d_name; |
| 64 | }; |
| 65 | |
| 66 | static const struct smb_dialect smb_dialects[] = { |
| 67 | {SMB_DIALECT_CORE, "PC NETWORK PROGRAM 1.0" }, |
| 68 | {SMB_DIALECT_COREPLUS, "MICROSOFT NETWORKS 1.03" }, |
| 69 | {SMB_DIALECT_LANMAN1_0, "MICROSOFT NETWORKS 3.0" }, |
| 70 | {SMB_DIALECT_LANMAN1_0, "LANMAN1.0" }, |
| 71 | {SMB_DIALECT_LANMAN2_0, "LM1.2X002" }, |
| 72 | {SMB_DIALECT_LANMAN2_0, "Samba" }, |
| 73 | {SMB_DIALECT_NTLM0_12, "NT LANMAN 1.0" }, |
| 74 | {SMB_DIALECT_NTLM0_12, "NT LM 0.12" }, |
| 75 | {-1, NULL} |
| 76 | }; |
| 77 | |
| 78 | static u_int32_t |
| 79 | smb_vc_maxread(struct smb_vc *vcp) |
| 80 | { |
| 81 | /* |
| 82 | * Specs say up to 64k data bytes, but Windows traffic |
| 83 | * uses 60k... no doubt for some good reason. |
| 84 | */ |
| 85 | if (SMB_CAPS(vcp) & SMB_CAP_LARGE_READX) |
| 86 | return (60*1024); |
| 87 | else |
| 88 | return (vcp->vc_sopt.sv_maxtx); |
| 89 | } |
| 90 | |
| 91 | static u_int32_t |
| 92 | smb_vc_maxwrite(struct smb_vc *vcp) |
| 93 | { |
| 94 | /* |
| 95 | * Specs say up to 64k data bytes, but Windows traffic |
| 96 | * uses 60k... probably for some good reason. |
| 97 | */ |
| 98 | if (SMB_CAPS(vcp) & SMB_CAP_LARGE_WRITEX) |
| 99 | return (60*1024); |
| 100 | else |
| 101 | return (vcp->vc_sopt.sv_maxtx); |
| 102 | } |
| 103 | |
| 104 | int |
| 105 | smb_smb_negotiate(struct smb_vc *vcp, struct smb_cred *scred) |
| 106 | { |
| 107 | const struct smb_dialect *dp; |
| 108 | struct smb_sopt *sp = NULL; |
| 109 | struct smb_rq *rqp; |
| 110 | struct mbchain *mbp; |
| 111 | struct mdchain *mdp; |
| 112 | u_int8_t wc, stime[8], sblen; |
| 113 | u_int16_t dindex, tw, swlen, bc; |
| 114 | int error, maxqsz; |
| 115 | |
| 116 | KASSERT(scred->scr_l == vcp->vc_iod->iod_l); |
| 117 | |
| 118 | vcp->vc_hflags = 0; |
| 119 | vcp->vc_hflags2 = 0; |
| 120 | vcp->obj.co_flags &= ~(SMBV_ENCRYPT); |
| 121 | sp = &vcp->vc_sopt; |
| 122 | memset(sp, 0, sizeof(struct smb_sopt)); |
| 123 | error = smb_rq_alloc(VCTOCP(vcp), SMB_COM_NEGOTIATE, scred, &rqp); |
| 124 | if (error) |
| 125 | return error; |
| 126 | smb_rq_getrequest(rqp, &mbp); |
| 127 | smb_rq_wstart(rqp); |
| 128 | smb_rq_wend(rqp); |
| 129 | smb_rq_bstart(rqp); |
| 130 | for(dp = smb_dialects; dp->d_id != -1; dp++) { |
| 131 | mb_put_uint8(mbp, SMB_DT_DIALECT); |
| 132 | smb_put_dstring(mbp, vcp, dp->d_name, SMB_CS_NONE); |
| 133 | } |
| 134 | smb_rq_bend(rqp); |
| 135 | error = smb_rq_simple(rqp); |
| 136 | SMBSDEBUG(("%d\n" , error)); |
| 137 | if (error) |
| 138 | goto bad; |
| 139 | smb_rq_getreply(rqp, &mdp); |
| 140 | do { |
| 141 | error = md_get_uint8(mdp, &wc); |
| 142 | if (error) |
| 143 | break; |
| 144 | error = md_get_uint16le(mdp, &dindex); |
| 145 | if (error) |
| 146 | break; |
| 147 | if (dindex > 7) { |
| 148 | SMBERROR(("Don't know how to talk with server %s (%d)\n" , "xxx" , dindex)); |
| 149 | error = EBADRPC; |
| 150 | break; |
| 151 | } |
| 152 | dp = smb_dialects + dindex; |
| 153 | sp->sv_proto = dp->d_id; |
| 154 | SMBSDEBUG(("Dialect %s (%d, %d)\n" , dp->d_name, dindex, wc)); |
| 155 | error = EBADRPC; |
| 156 | if (dp->d_id >= SMB_DIALECT_NTLM0_12) { |
| 157 | u_int8_t tb; |
| 158 | |
| 159 | if (wc != 17) |
| 160 | break; |
| 161 | md_get_uint8(mdp, &tb); |
| 162 | sp->sv_sm = tb; |
| 163 | md_get_uint16le(mdp, &sp->sv_maxmux); |
| 164 | md_get_uint16le(mdp, &sp->sv_maxvcs); |
| 165 | md_get_uint32le(mdp, &sp->sv_maxtx); |
| 166 | md_get_uint32le(mdp, &sp->sv_maxraw); |
| 167 | md_get_uint32le(mdp, &sp->sv_skey); |
| 168 | md_get_uint32le(mdp, &sp->sv_caps); |
| 169 | md_get_mem(mdp, stime, 8, MB_MSYSTEM); |
| 170 | md_get_uint16le(mdp, &tw); |
| 171 | sp->sv_tz = tw; |
| 172 | md_get_uint8(mdp, &sblen); |
| 173 | if (sblen && (sp->sv_sm & SMB_SM_ENCRYPT)) { |
| 174 | if (sblen != SMB_MAXCHALLENGELEN) { |
| 175 | SMBERROR(("Unexpected length of security blob (%d)\n" , sblen)); |
| 176 | break; |
| 177 | } |
| 178 | error = md_get_uint16le(mdp, &bc); |
| 179 | if (error) |
| 180 | break; |
| 181 | if (sp->sv_caps & SMB_CAP_EXT_SECURITY) |
| 182 | md_get_mem(mdp, NULL, 16, MB_MSYSTEM); |
| 183 | error = md_get_mem(mdp, vcp->vc_ch, sblen, MB_MSYSTEM); |
| 184 | if (error) |
| 185 | break; |
| 186 | vcp->vc_chlen = sblen; |
| 187 | vcp->obj.co_flags |= SMBV_ENCRYPT; |
| 188 | } |
| 189 | vcp->vc_hflags2 |= SMB_FLAGS2_KNOWS_LONG_NAMES; |
| 190 | if (dp->d_id == SMB_DIALECT_NTLM0_12 && |
| 191 | sp->sv_maxtx < 4096 && |
| 192 | (sp->sv_caps & SMB_CAP_NT_SMBS) == 0) { |
| 193 | vcp->obj.co_flags |= SMBV_WIN95; |
| 194 | SMBSDEBUG(("Win95 detected\n" )); |
| 195 | } |
| 196 | } else if (dp->d_id > SMB_DIALECT_CORE) { |
| 197 | md_get_uint16le(mdp, &sp->sv_sm); |
| 198 | md_get_uint16le(mdp, &tw); |
| 199 | sp->sv_maxtx = tw; |
| 200 | md_get_uint16le(mdp, &sp->sv_maxmux); |
| 201 | md_get_uint16le(mdp, &sp->sv_maxvcs); |
| 202 | md_get_uint16(mdp, NULL); /* rawmode */ |
| 203 | md_get_uint32le(mdp, &sp->sv_skey); |
| 204 | if (wc == 13) { /* >= LANMAN1 */ |
| 205 | md_get_uint16(mdp, NULL); /* time */ |
| 206 | md_get_uint16(mdp, NULL); /* date */ |
| 207 | md_get_uint16le(mdp, &tw); |
| 208 | sp->sv_tz = tw; |
| 209 | md_get_uint16le(mdp, &swlen); |
| 210 | if (swlen > SMB_MAXCHALLENGELEN) |
| 211 | break; |
| 212 | md_get_uint16(mdp, NULL); /* mbz */ |
| 213 | if (md_get_uint16le(mdp, &bc) != 0) |
| 214 | break; |
| 215 | if (bc < swlen) |
| 216 | break; |
| 217 | if (swlen && (sp->sv_sm & SMB_SM_ENCRYPT)) { |
| 218 | error = md_get_mem(mdp, vcp->vc_ch, swlen, MB_MSYSTEM); |
| 219 | if (error) |
| 220 | break; |
| 221 | vcp->vc_chlen = swlen; |
| 222 | vcp->obj.co_flags |= SMBV_ENCRYPT; |
| 223 | } |
| 224 | } |
| 225 | vcp->vc_hflags2 |= SMB_FLAGS2_KNOWS_LONG_NAMES; |
| 226 | } else { /* an old CORE protocol */ |
| 227 | sp->sv_maxmux = 1; |
| 228 | } |
| 229 | error = 0; |
| 230 | } while (0); |
| 231 | if (error == 0) { |
| 232 | vcp->vc_maxvcs = sp->sv_maxvcs; |
| 233 | if (vcp->vc_maxvcs <= 1) { |
| 234 | if (vcp->vc_maxvcs == 0) |
| 235 | vcp->vc_maxvcs = 1; |
| 236 | } |
| 237 | if (sp->sv_maxtx <= 0 || sp->sv_maxtx > 0xffff) |
| 238 | sp->sv_maxtx = 1024; |
| 239 | else |
| 240 | sp->sv_maxtx = min(sp->sv_maxtx, |
| 241 | 63*1024 + SMB_HDRLEN + 16); |
| 242 | SMB_TRAN_GETPARAM(vcp, SMBTP_RCVSZ, &maxqsz); |
| 243 | vcp->vc_rxmax = min(smb_vc_maxread(vcp), maxqsz - 1024); |
| 244 | SMB_TRAN_GETPARAM(vcp, SMBTP_SNDSZ, &maxqsz); |
| 245 | vcp->vc_wxmax = min(smb_vc_maxwrite(vcp), maxqsz - 1024); |
| 246 | vcp->vc_txmax = min(sp->sv_maxtx, maxqsz); |
| 247 | SMBSDEBUG(("TZ = %d\n" , sp->sv_tz)); |
| 248 | SMBSDEBUG(("CAPS = %x\n" , sp->sv_caps)); |
| 249 | SMBSDEBUG(("MAXMUX = %d\n" , sp->sv_maxmux)); |
| 250 | SMBSDEBUG(("MAXVCS = %d\n" , sp->sv_maxvcs)); |
| 251 | SMBSDEBUG(("MAXRAW = %d\n" , sp->sv_maxraw)); |
| 252 | SMBSDEBUG(("MAXTX = %d\n" , sp->sv_maxtx)); |
| 253 | } |
| 254 | bad: |
| 255 | smb_rq_done(rqp); |
| 256 | return error; |
| 257 | } |
| 258 | |
| 259 | int |
| 260 | smb_smb_ssnsetup(struct smb_vc *vcp, struct smb_cred *scred) |
| 261 | { |
| 262 | struct smb_rq *rqp; |
| 263 | struct mbchain *mbp; |
| 264 | const smb_unichar *unipp; |
| 265 | smb_uniptr ntencpass = NULL; |
| 266 | char *up, *pbuf, *encpass; |
| 267 | const char *pp; |
| 268 | int error, plen, uniplen, ulen, upper; |
| 269 | |
| 270 | KASSERT(scred->scr_l == vcp->vc_iod->iod_l); |
| 271 | |
| 272 | upper = 0; |
| 273 | |
| 274 | again: |
| 275 | |
| 276 | vcp->vc_smbuid = SMB_UID_UNKNOWN; |
| 277 | |
| 278 | error = smb_rq_alloc(VCTOCP(vcp), SMB_COM_SESSION_SETUP_ANDX, scred, &rqp); |
| 279 | if (error) |
| 280 | return error; |
| 281 | pbuf = malloc(SMB_MAXPASSWORDLEN + 1, M_SMBTEMP, M_WAITOK); |
| 282 | encpass = malloc(24, M_SMBTEMP, M_WAITOK); |
| 283 | if (vcp->vc_sopt.sv_sm & SMB_SM_USER) { |
| 284 | /* |
| 285 | * We try w/o uppercasing first so Samba mixed case |
| 286 | * passwords work. If that fails we come back and try |
| 287 | * uppercasing to satisfy OS/2 and Windows for Workgroups. |
| 288 | */ |
| 289 | if (upper) { |
| 290 | iconv_convstr(vcp->vc_toupper, pbuf, |
| 291 | smb_vc_getpass(vcp), SMB_MAXPASSWORDLEN + 1); |
| 292 | } else { |
| 293 | strlcpy(pbuf, smb_vc_getpass(vcp), |
| 294 | SMB_MAXPASSWORDLEN + 1); |
| 295 | } |
| 296 | if (!SMB_UNICODE_STRINGS(vcp)) |
| 297 | iconv_convstr(vcp->vc_toserver, pbuf, pbuf, |
| 298 | SMB_MAXPASSWORDLEN + 1); |
| 299 | |
| 300 | if (vcp->vc_sopt.sv_sm & SMB_SM_ENCRYPT) { |
| 301 | uniplen = plen = 24; |
| 302 | smb_encrypt(pbuf, vcp->vc_ch, encpass); |
| 303 | ntencpass = malloc(uniplen, M_SMBTEMP, M_WAITOK); |
| 304 | if (SMB_UNICODE_STRINGS(vcp)) { |
| 305 | strlcpy(pbuf, smb_vc_getpass(vcp), |
| 306 | SMB_MAXPASSWORDLEN + 1); |
| 307 | } else |
| 308 | iconv_convstr(vcp->vc_toserver, pbuf, |
| 309 | smb_vc_getpass(vcp), |
| 310 | SMB_MAXPASSWORDLEN + 1); |
| 311 | smb_ntencrypt(pbuf, vcp->vc_ch, (u_char*)ntencpass); |
| 312 | pp = encpass; |
| 313 | unipp = ntencpass; |
| 314 | } else { |
| 315 | plen = strlen(pbuf) + 1; |
| 316 | pp = pbuf; |
| 317 | uniplen = plen * 2; |
| 318 | ntencpass = malloc(uniplen, M_SMBTEMP, M_WAITOK); |
| 319 | smb_strtouni(ntencpass, smb_vc_getpass(vcp)); |
| 320 | plen--; |
| 321 | |
| 322 | /* |
| 323 | * The uniplen is zeroed because Samba cannot deal |
| 324 | * with this 2nd cleartext password. This Samba |
| 325 | * "bug" is actually a workaround for problems in |
| 326 | * Microsoft clients. |
| 327 | */ |
| 328 | uniplen = 0/*-= 2*/; |
| 329 | unipp = ntencpass; |
| 330 | } |
| 331 | } else { |
| 332 | /* |
| 333 | * In the share security mode password will be used |
| 334 | * only in the tree authentication |
| 335 | */ |
| 336 | pp = "" ; |
| 337 | plen = 1; |
| 338 | unipp = &smb_unieol; |
| 339 | uniplen = 0; |
| 340 | } |
| 341 | smb_rq_wstart(rqp); |
| 342 | mbp = &rqp->sr_rq; |
| 343 | up = vcp->vc_username; |
| 344 | ulen = strlen(up) + 1; |
| 345 | /* |
| 346 | * If userid is null we are attempting anonymous browse login |
| 347 | * so passwords must be zero length. |
| 348 | */ |
| 349 | if (ulen == 1) |
| 350 | plen = uniplen = 0; |
| 351 | mb_put_uint8(mbp, 0xff); |
| 352 | mb_put_uint8(mbp, 0); |
| 353 | mb_put_uint16le(mbp, 0); |
| 354 | mb_put_uint16le(mbp, vcp->vc_sopt.sv_maxtx); |
| 355 | mb_put_uint16le(mbp, vcp->vc_sopt.sv_maxmux); |
| 356 | mb_put_uint16le(mbp, vcp->vc_number); |
| 357 | mb_put_uint32le(mbp, vcp->vc_sopt.sv_skey); |
| 358 | mb_put_uint16le(mbp, plen); |
| 359 | if (SMB_DIALECT(vcp) < SMB_DIALECT_NTLM0_12) { |
| 360 | mb_put_uint32le(mbp, 0); |
| 361 | smb_rq_wend(rqp); |
| 362 | smb_rq_bstart(rqp); |
| 363 | mb_put_mem(mbp, pp, plen, MB_MSYSTEM); |
| 364 | smb_put_dstring(mbp, vcp, up, SMB_CS_NONE); |
| 365 | } else { |
| 366 | mb_put_uint16le(mbp, uniplen); |
| 367 | mb_put_uint32le(mbp, 0); /* reserved */ |
| 368 | mb_put_uint32le(mbp, vcp->obj.co_flags & SMBV_UNICODE ? |
| 369 | SMB_CAP_UNICODE : 0); |
| 370 | smb_rq_wend(rqp); |
| 371 | smb_rq_bstart(rqp); |
| 372 | mb_put_mem(mbp, pp, plen, MB_MSYSTEM); |
| 373 | mb_put_mem(mbp, (const void *)unipp, uniplen, MB_MSYSTEM); |
| 374 | smb_put_dstring(mbp, vcp, up, SMB_CS_NONE); /* AccountName */ |
| 375 | smb_put_dstring(mbp, vcp, vcp->vc_domain, SMB_CS_NONE); /* PrimaryDomain */ |
| 376 | smb_put_dstring(mbp, vcp, "NetBSD" , SMB_CS_NONE); /* Client's OS */ |
| 377 | smb_put_dstring(mbp, vcp, "NETSMB" , SMB_CS_NONE); /* Client name */ |
| 378 | } |
| 379 | smb_rq_bend(rqp); |
| 380 | if (ntencpass) |
| 381 | free(ntencpass, M_SMBTEMP); |
| 382 | error = smb_rq_simple(rqp); |
| 383 | SMBSDEBUG(("%d\n" , error)); |
| 384 | if (error) { |
| 385 | if (error == EACCES) |
| 386 | error = EAUTH; |
| 387 | goto bad; |
| 388 | } |
| 389 | vcp->vc_smbuid = rqp->sr_rpuid; |
| 390 | bad: |
| 391 | free(encpass, M_SMBTEMP); |
| 392 | free(pbuf, M_SMBTEMP); |
| 393 | smb_rq_done(rqp); |
| 394 | if (error && !upper && vcp->vc_sopt.sv_sm & SMB_SM_USER) { |
| 395 | upper = 1; |
| 396 | goto again; |
| 397 | } |
| 398 | return error; |
| 399 | } |
| 400 | |
| 401 | int |
| 402 | smb_smb_ssnclose(struct smb_vc *vcp, struct smb_cred *scred) |
| 403 | { |
| 404 | struct smb_rq *rqp; |
| 405 | struct mbchain *mbp; |
| 406 | int error; |
| 407 | |
| 408 | KASSERT(scred->scr_l == vcp->vc_iod->iod_l); |
| 409 | |
| 410 | if (vcp->vc_smbuid == SMB_UID_UNKNOWN) |
| 411 | return 0; |
| 412 | |
| 413 | error = smb_rq_alloc(VCTOCP(vcp), SMB_COM_LOGOFF_ANDX, scred, &rqp); |
| 414 | if (error) |
| 415 | return error; |
| 416 | mbp = &rqp->sr_rq; |
| 417 | smb_rq_wstart(rqp); |
| 418 | mb_put_uint8(mbp, 0xff); |
| 419 | mb_put_uint8(mbp, 0); |
| 420 | mb_put_uint16le(mbp, 0); |
| 421 | smb_rq_wend(rqp); |
| 422 | smb_rq_bstart(rqp); |
| 423 | smb_rq_bend(rqp); |
| 424 | error = smb_rq_simple(rqp); |
| 425 | SMBSDEBUG(("%d\n" , error)); |
| 426 | smb_rq_done(rqp); |
| 427 | return error; |
| 428 | } |
| 429 | |
| 430 | static const char * |
| 431 | smb_share_typename(int stype) |
| 432 | { |
| 433 | static const char smb_any_share[] = "?????" ; |
| 434 | const char *pp; |
| 435 | |
| 436 | switch (stype) { |
| 437 | case SMB_ST_DISK: |
| 438 | pp = "A:" ; |
| 439 | break; |
| 440 | case SMB_ST_PRINTER: |
| 441 | pp = smb_any_share; /* can't use LPT: here... */ |
| 442 | break; |
| 443 | case SMB_ST_PIPE: |
| 444 | pp = "IPC" ; |
| 445 | break; |
| 446 | case SMB_ST_COMM: |
| 447 | pp = "COMM" ; |
| 448 | break; |
| 449 | case SMB_ST_ANY: |
| 450 | default: |
| 451 | pp = smb_any_share; |
| 452 | break; |
| 453 | } |
| 454 | return pp; |
| 455 | } |
| 456 | |
| 457 | int |
| 458 | smb_smb_treeconnect(struct smb_share *ssp, struct smb_cred *scred) |
| 459 | { |
| 460 | struct smb_vc *vcp; |
| 461 | struct smb_rq rq, *rqp = &rq; |
| 462 | struct mbchain *mbp; |
| 463 | const char *pp; |
| 464 | char *pbuf, *encpass; |
| 465 | int error, plen, caseopt, upper; |
| 466 | |
| 467 | upper = 0; |
| 468 | |
| 469 | again: |
| 470 | |
| 471 | #if 0 |
| 472 | /* Disable Unicode for SMB_COM_TREE_CONNECT_ANDX requests */ |
| 473 | if (SSTOVC(ssp)->vc_hflags2 & SMB_FLAGS2_UNICODE) { |
| 474 | vcp = SSTOVC(ssp); |
| 475 | if (vcp->vc_toserver) { |
| 476 | iconv_close(vcp->vc_toserver); |
| 477 | /* Use NULL until UTF-8 -> ASCII works */ |
| 478 | vcp->vc_toserver = NULL; |
| 479 | } |
| 480 | if (vcp->vc_tolocal) { |
| 481 | iconv_close(vcp->vc_tolocal); |
| 482 | /* Use NULL until ASCII -> UTF-8 works*/ |
| 483 | vcp->vc_tolocal = NULL; |
| 484 | } |
| 485 | vcp->vc_hflags2 &= ~SMB_FLAGS2_UNICODE; |
| 486 | } |
| 487 | #endif |
| 488 | |
| 489 | ssp->ss_tid = SMB_TID_UNKNOWN; |
| 490 | error = smb_rq_alloc(SSTOCP(ssp), SMB_COM_TREE_CONNECT_ANDX, scred, &rqp); |
| 491 | if (error) |
| 492 | return error; |
| 493 | vcp = rqp->sr_vc; |
| 494 | caseopt = SMB_CS_NONE; |
| 495 | if (vcp->vc_sopt.sv_sm & SMB_SM_USER) { |
| 496 | plen = 1; |
| 497 | pp = "" ; |
| 498 | pbuf = NULL; |
| 499 | encpass = NULL; |
| 500 | } else { |
| 501 | pbuf = malloc(SMB_MAXPASSWORDLEN + 1, M_SMBTEMP, M_WAITOK); |
| 502 | encpass = malloc(24, M_SMBTEMP, M_WAITOK); |
| 503 | /* |
| 504 | * We try w/o uppercasing first so Samba mixed case |
| 505 | * passwords work. If that fails we come back and try |
| 506 | * uppercasing to satisfy OS/2 and Windows for Workgroups. |
| 507 | */ |
| 508 | if (upper) { |
| 509 | iconv_convstr(vcp->vc_toupper, pbuf, |
| 510 | smb_share_getpass(ssp), SMB_MAXPASSWORDLEN + 1); |
| 511 | } else { |
| 512 | strlcpy(pbuf, smb_share_getpass(ssp), |
| 513 | SMB_MAXPASSWORDLEN + 1); |
| 514 | } |
| 515 | if (vcp->vc_sopt.sv_sm & SMB_SM_ENCRYPT) { |
| 516 | plen = 24; |
| 517 | smb_encrypt(pbuf, vcp->vc_ch, encpass); |
| 518 | pp = encpass; |
| 519 | } else { |
| 520 | plen = strlen(pbuf) + 1; |
| 521 | pp = pbuf; |
| 522 | } |
| 523 | } |
| 524 | mbp = &rqp->sr_rq; |
| 525 | smb_rq_wstart(rqp); |
| 526 | mb_put_uint8(mbp, 0xff); |
| 527 | mb_put_uint8(mbp, 0); |
| 528 | mb_put_uint16le(mbp, 0); |
| 529 | mb_put_uint16le(mbp, 0); /* Flags */ |
| 530 | mb_put_uint16le(mbp, plen); |
| 531 | smb_rq_wend(rqp); |
| 532 | smb_rq_bstart(rqp); |
| 533 | mb_put_mem(mbp, pp, plen, MB_MSYSTEM); |
| 534 | smb_put_dmem(mbp, vcp, "\\\\" , 2, caseopt); |
| 535 | pp = vcp->vc_srvname; |
| 536 | smb_put_dmem(mbp, vcp, pp, strlen(pp), caseopt); |
| 537 | smb_put_dmem(mbp, vcp, "\\" , 1, caseopt); |
| 538 | pp = ssp->ss_name; |
| 539 | smb_put_dstring(mbp, vcp, pp, caseopt); |
| 540 | pp = smb_share_typename(ssp->ss_type); |
| 541 | smb_put_dstring(mbp, vcp, pp, caseopt); |
| 542 | smb_rq_bend(rqp); |
| 543 | error = smb_rq_simple(rqp); |
| 544 | SMBSDEBUG(("%d\n" , error)); |
| 545 | if (error) |
| 546 | goto bad; |
| 547 | ssp->ss_tid = rqp->sr_rptid; |
| 548 | ssp->ss_vcgenid = vcp->vc_genid; |
| 549 | ssp->ss_flags |= SMBS_CONNECTED; |
| 550 | bad: |
| 551 | if (encpass) |
| 552 | free(encpass, M_SMBTEMP); |
| 553 | if (pbuf) |
| 554 | free(pbuf, M_SMBTEMP); |
| 555 | smb_rq_done(rqp); |
| 556 | if (error && !upper) { |
| 557 | upper = 1; |
| 558 | goto again; |
| 559 | } |
| 560 | return error; |
| 561 | } |
| 562 | |
| 563 | int |
| 564 | smb_smb_treedisconnect(struct smb_share *ssp, struct smb_cred *scred) |
| 565 | { |
| 566 | struct smb_rq *rqp; |
| 567 | int error; |
| 568 | |
| 569 | if (ssp->ss_tid == SMB_TID_UNKNOWN) |
| 570 | return 0; |
| 571 | error = smb_rq_alloc(SSTOCP(ssp), SMB_COM_TREE_DISCONNECT, scred, &rqp); |
| 572 | if (error) |
| 573 | return error; |
| 574 | smb_rq_wstart(rqp); |
| 575 | smb_rq_wend(rqp); |
| 576 | smb_rq_bstart(rqp); |
| 577 | smb_rq_bend(rqp); |
| 578 | error = smb_rq_simple(rqp); |
| 579 | SMBSDEBUG(("%d\n" , error)); |
| 580 | smb_rq_done(rqp); |
| 581 | ssp->ss_tid = SMB_TID_UNKNOWN; |
| 582 | return error; |
| 583 | } |
| 584 | |
| 585 | static inline int |
| 586 | smb_smb_readx(struct smb_share *ssp, u_int16_t fid, size_t *len, size_t *rresid, |
| 587 | struct uio *uio, struct smb_cred *scred) |
| 588 | { |
| 589 | struct smb_rq *rqp; |
| 590 | struct mbchain *mbp; |
| 591 | struct mdchain *mdp; |
| 592 | u_int8_t wc; |
| 593 | int error; |
| 594 | u_int16_t residhi, residlo, off, doff; |
| 595 | u_int32_t resid; |
| 596 | |
| 597 | if (!(SMB_CAPS(SSTOVC(ssp)) & SMB_CAP_LARGE_FILES) && |
| 598 | uio->uio_offset >= (1LL << 32)) { |
| 599 | /* Cannot read at/beyond 4G */ |
| 600 | return (EFBIG); |
| 601 | } |
| 602 | |
| 603 | if (!(SMB_CAPS(SSTOVC(ssp)) & SMB_CAP_LARGE_READX)) { |
| 604 | size_t blksz; |
| 605 | |
| 606 | blksz = SSTOVC(ssp)->vc_txmax - SMB_HDRLEN - 64; |
| 607 | if (blksz > 0xffff) |
| 608 | blksz = 0xffff; |
| 609 | |
| 610 | *len = min(blksz, *len); |
| 611 | } |
| 612 | |
| 613 | error = smb_rq_alloc(SSTOCP(ssp), SMB_COM_READ_ANDX, scred, &rqp); |
| 614 | if (error) |
| 615 | return error; |
| 616 | smb_rq_getrequest(rqp, &mbp); |
| 617 | smb_rq_wstart(rqp); |
| 618 | mb_put_uint8(mbp, 0xff); /* no secondary command */ |
| 619 | mb_put_uint8(mbp, 0); /* MBZ */ |
| 620 | mb_put_uint16le(mbp, 0); /* offset to secondary */ |
| 621 | mb_put_mem(mbp, (void *)&fid, sizeof(fid), MB_MSYSTEM); |
| 622 | mb_put_uint32le(mbp, uio->uio_offset); |
| 623 | *len = min(SSTOVC(ssp)->vc_rxmax, *len); |
| 624 | mb_put_uint16le(mbp, *len); /* MaxCount */ |
| 625 | mb_put_uint16le(mbp, *len); /* MinCount (only indicates blocking) */ |
| 626 | mb_put_uint32le(mbp, *len >> 16); /* MaxCountHigh */ |
| 627 | mb_put_uint16le(mbp, *len); /* Remaining ("obsolete") */ |
| 628 | mb_put_uint32le(mbp, uio->uio_offset >> 32); /* OffsetHigh */ |
| 629 | smb_rq_wend(rqp); |
| 630 | smb_rq_bstart(rqp); |
| 631 | smb_rq_bend(rqp); |
| 632 | do { |
| 633 | error = smb_rq_simple(rqp); |
| 634 | if (error) |
| 635 | break; |
| 636 | smb_rq_getreply(rqp, &mdp); |
| 637 | off = SMB_HDRLEN; |
| 638 | md_get_uint8(mdp, &wc); |
| 639 | off++; |
| 640 | if (wc != 12) { |
| 641 | error = EBADRPC; |
| 642 | break; |
| 643 | } |
| 644 | md_get_uint8(mdp, NULL); |
| 645 | off++; |
| 646 | md_get_uint8(mdp, NULL); |
| 647 | off++; |
| 648 | md_get_uint16(mdp, NULL); |
| 649 | off += 2; |
| 650 | md_get_uint16(mdp, NULL); |
| 651 | off += 2; |
| 652 | md_get_uint16(mdp, NULL); /* data compaction mode */ |
| 653 | off += 2; |
| 654 | md_get_uint16(mdp, NULL); |
| 655 | off += 2; |
| 656 | md_get_uint16le(mdp, &residlo); |
| 657 | off += 2; |
| 658 | md_get_uint16le(mdp, &doff); /* data offset */ |
| 659 | off += 2; |
| 660 | md_get_uint16le(mdp, &residhi); |
| 661 | off += 2; |
| 662 | resid = (residhi << 16) | residlo; |
| 663 | md_get_mem(mdp, NULL, 4 * 2, MB_MSYSTEM); |
| 664 | off += 4*2; |
| 665 | md_get_uint16(mdp, NULL); /* ByteCount */ |
| 666 | off += 2; |
| 667 | if (doff > off) /* pad byte(s)? */ |
| 668 | md_get_mem(mdp, NULL, doff - off, MB_MSYSTEM); |
| 669 | if (resid == 0) { |
| 670 | *rresid = resid; |
| 671 | break; |
| 672 | } |
| 673 | error = md_get_uio(mdp, uio, resid); |
| 674 | if (error) |
| 675 | break; |
| 676 | *rresid = resid; |
| 677 | } while(0); |
| 678 | smb_rq_done(rqp); |
| 679 | return (error); |
| 680 | } |
| 681 | |
| 682 | static inline int |
| 683 | smb_smb_writex(struct smb_share *ssp, u_int16_t fid, size_t *len, size_t *rresid, |
| 684 | struct uio *uio, struct smb_cred *scred) |
| 685 | { |
| 686 | struct smb_rq *rqp; |
| 687 | struct mbchain *mbp; |
| 688 | struct mdchain *mdp; |
| 689 | int error; |
| 690 | u_int8_t wc; |
| 691 | u_int16_t resid; |
| 692 | |
| 693 | if (!(SMB_CAPS(SSTOVC(ssp)) & SMB_CAP_LARGE_FILES) && |
| 694 | uio->uio_offset >= (1LL << 32)) { |
| 695 | /* Cannot write at/beyond 4G */ |
| 696 | return (EFBIG); |
| 697 | } |
| 698 | |
| 699 | if (SMB_CAPS(SSTOVC(ssp)) & SMB_CAP_LARGE_WRITEX) { |
| 700 | *len = min(SSTOVC(ssp)->vc_wxmax, *len); |
| 701 | } else { |
| 702 | size_t blksz; |
| 703 | |
| 704 | blksz = SSTOVC(ssp)->vc_txmax - SMB_HDRLEN - 64; |
| 705 | if (blksz > 0xffff) |
| 706 | blksz = 0xffff; |
| 707 | |
| 708 | *len = min(blksz, *len); |
| 709 | } |
| 710 | |
| 711 | error = smb_rq_alloc(SSTOCP(ssp), SMB_COM_WRITE_ANDX, scred, &rqp); |
| 712 | if (error != 0) |
| 713 | return (error); |
| 714 | smb_rq_getrequest(rqp, &mbp); |
| 715 | smb_rq_wstart(rqp); |
| 716 | mb_put_uint8(mbp, 0xff); /* no secondary command */ |
| 717 | mb_put_uint8(mbp, 0); /* MBZ */ |
| 718 | mb_put_uint16le(mbp, 0); /* offset to secondary */ |
| 719 | mb_put_mem(mbp, (void *)&fid, sizeof(fid), MB_MSYSTEM); |
| 720 | mb_put_uint32le(mbp, uio->uio_offset); |
| 721 | mb_put_uint32le(mbp, 0); /* MBZ (timeout) */ |
| 722 | mb_put_uint16le(mbp, 0); /* !write-thru */ |
| 723 | mb_put_uint16le(mbp, 0); |
| 724 | mb_put_uint16le(mbp, *len >> 16); |
| 725 | mb_put_uint16le(mbp, *len); |
| 726 | mb_put_uint16le(mbp, 64); /* data offset from header start */ |
| 727 | mb_put_uint32le(mbp, uio->uio_offset >> 32); /* OffsetHigh */ |
| 728 | smb_rq_wend(rqp); |
| 729 | smb_rq_bstart(rqp); |
| 730 | do { |
| 731 | mb_put_uint8(mbp, 0xee); /* mimic xp pad byte! */ |
| 732 | error = mb_put_uio(mbp, uio, *len); |
| 733 | if (error) |
| 734 | break; |
| 735 | smb_rq_bend(rqp); |
| 736 | error = smb_rq_simple(rqp); |
| 737 | if (error) |
| 738 | break; |
| 739 | smb_rq_getreply(rqp, &mdp); |
| 740 | md_get_uint8(mdp, &wc); |
| 741 | if (wc != 6) { |
| 742 | error = EBADRPC; |
| 743 | break; |
| 744 | } |
| 745 | md_get_uint8(mdp, NULL); |
| 746 | md_get_uint8(mdp, NULL); |
| 747 | md_get_uint16(mdp, NULL); |
| 748 | md_get_uint16le(mdp, &resid); |
| 749 | *rresid = resid; |
| 750 | } while(0); |
| 751 | |
| 752 | smb_rq_done(rqp); |
| 753 | return (error); |
| 754 | } |
| 755 | |
| 756 | static inline int |
| 757 | smb_smb_read(struct smb_share *ssp, u_int16_t fid, |
| 758 | size_t *len, size_t *rresid, struct uio *uio, struct smb_cred *scred) |
| 759 | { |
| 760 | struct smb_rq *rqp; |
| 761 | struct mbchain *mbp; |
| 762 | struct mdchain *mdp; |
| 763 | u_int16_t resid, bc; |
| 764 | u_int8_t wc; |
| 765 | int error, rlen, blksz; |
| 766 | |
| 767 | /* Cannot read at/beyond 4G */ |
| 768 | if (uio->uio_offset >= (1LL << 32)) |
| 769 | return (EFBIG); |
| 770 | |
| 771 | error = smb_rq_alloc(SSTOCP(ssp), SMB_COM_READ, scred, &rqp); |
| 772 | if (error) |
| 773 | return error; |
| 774 | |
| 775 | blksz = SSTOVC(ssp)->vc_txmax - SMB_HDRLEN - 16; |
| 776 | rlen = *len = min(blksz, *len); |
| 777 | |
| 778 | smb_rq_getrequest(rqp, &mbp); |
| 779 | smb_rq_wstart(rqp); |
| 780 | mb_put_mem(mbp, (void *)&fid, sizeof(fid), MB_MSYSTEM); |
| 781 | mb_put_uint16le(mbp, rlen); |
| 782 | mb_put_uint32le(mbp, uio->uio_offset); |
| 783 | mb_put_uint16le(mbp, min(uio->uio_resid, 0xffff)); |
| 784 | smb_rq_wend(rqp); |
| 785 | smb_rq_bstart(rqp); |
| 786 | smb_rq_bend(rqp); |
| 787 | do { |
| 788 | error = smb_rq_simple(rqp); |
| 789 | if (error) |
| 790 | break; |
| 791 | smb_rq_getreply(rqp, &mdp); |
| 792 | md_get_uint8(mdp, &wc); |
| 793 | if (wc != 5) { |
| 794 | error = EBADRPC; |
| 795 | break; |
| 796 | } |
| 797 | md_get_uint16le(mdp, &resid); |
| 798 | md_get_mem(mdp, NULL, 4 * 2, MB_MSYSTEM); |
| 799 | md_get_uint16le(mdp, &bc); |
| 800 | md_get_uint8(mdp, NULL); /* ignore buffer type */ |
| 801 | md_get_uint16le(mdp, &resid); |
| 802 | if (resid == 0) { |
| 803 | *rresid = resid; |
| 804 | break; |
| 805 | } |
| 806 | error = md_get_uio(mdp, uio, resid); |
| 807 | if (error) |
| 808 | break; |
| 809 | *rresid = resid; |
| 810 | } while(0); |
| 811 | smb_rq_done(rqp); |
| 812 | return error; |
| 813 | } |
| 814 | |
| 815 | int |
| 816 | smb_read(struct smb_share *ssp, u_int16_t fid, struct uio *uio, |
| 817 | struct smb_cred *scred) |
| 818 | { |
| 819 | size_t tsize, len, resid; |
| 820 | int error = 0; |
| 821 | bool rx = (SMB_CAPS(SSTOVC(ssp)) & |
| 822 | (SMB_CAP_LARGE_FILES|SMB_CAP_LARGE_READX)) != 0; |
| 823 | |
| 824 | resid = 0; /* XXX gcc */ |
| 825 | |
| 826 | tsize = uio->uio_resid; |
| 827 | while (tsize > 0) { |
| 828 | len = tsize; |
| 829 | if (rx) |
| 830 | error = smb_smb_readx(ssp, fid, &len, &resid, uio, scred); |
| 831 | else |
| 832 | error = smb_smb_read(ssp, fid, &len, &resid, uio, scred); |
| 833 | if (error) |
| 834 | break; |
| 835 | tsize -= resid; |
| 836 | if (resid < len) |
| 837 | break; |
| 838 | } |
| 839 | return error; |
| 840 | } |
| 841 | |
| 842 | static inline int |
| 843 | smb_smb_write(struct smb_share *ssp, u_int16_t fid, size_t *len, size_t *rresid, |
| 844 | struct uio *uio, struct smb_cred *scred) |
| 845 | { |
| 846 | struct smb_rq *rqp; |
| 847 | struct mbchain *mbp; |
| 848 | struct mdchain *mdp; |
| 849 | u_int16_t resid; |
| 850 | u_int8_t wc; |
| 851 | int error, blksz; |
| 852 | |
| 853 | /* Cannot write at/beyond 4G */ |
| 854 | if (uio->uio_offset >= (1LL << 32)) |
| 855 | return (EFBIG); |
| 856 | |
| 857 | blksz = SSTOVC(ssp)->vc_txmax - SMB_HDRLEN - 16; |
| 858 | if (blksz > 0xffff) |
| 859 | blksz = 0xffff; |
| 860 | |
| 861 | resid = *len = min(blksz, *len); |
| 862 | |
| 863 | error = smb_rq_alloc(SSTOCP(ssp), SMB_COM_WRITE, scred, &rqp); |
| 864 | if (error) |
| 865 | return error; |
| 866 | smb_rq_getrequest(rqp, &mbp); |
| 867 | smb_rq_wstart(rqp); |
| 868 | mb_put_mem(mbp, (void *)&fid, sizeof(fid), MB_MSYSTEM); |
| 869 | mb_put_uint16le(mbp, resid); |
| 870 | mb_put_uint32le(mbp, uio->uio_offset); |
| 871 | mb_put_uint16le(mbp, min(uio->uio_resid, 0xffff)); |
| 872 | smb_rq_wend(rqp); |
| 873 | smb_rq_bstart(rqp); |
| 874 | mb_put_uint8(mbp, SMB_DT_DATA); |
| 875 | mb_put_uint16le(mbp, resid); |
| 876 | do { |
| 877 | error = mb_put_uio(mbp, uio, resid); |
| 878 | if (error) |
| 879 | break; |
| 880 | smb_rq_bend(rqp); |
| 881 | error = smb_rq_simple(rqp); |
| 882 | if (error) |
| 883 | break; |
| 884 | smb_rq_getreply(rqp, &mdp); |
| 885 | md_get_uint8(mdp, &wc); |
| 886 | if (wc != 1) { |
| 887 | error = EBADRPC; |
| 888 | break; |
| 889 | } |
| 890 | md_get_uint16le(mdp, &resid); |
| 891 | *rresid = resid; |
| 892 | } while(0); |
| 893 | smb_rq_done(rqp); |
| 894 | return error; |
| 895 | } |
| 896 | |
| 897 | int |
| 898 | smb_write(struct smb_share *ssp, u_int16_t fid, struct uio *uio, |
| 899 | struct smb_cred *scred) |
| 900 | { |
| 901 | int error = 0; |
| 902 | size_t len, tsize, resid; |
| 903 | bool wx = (SMB_CAPS(SSTOVC(ssp)) & |
| 904 | (SMB_CAP_LARGE_FILES|SMB_CAP_LARGE_WRITEX)) != 0; |
| 905 | |
| 906 | resid = 0; /* XXX gcc */ |
| 907 | |
| 908 | tsize = uio->uio_resid; |
| 909 | while (tsize > 0) { |
| 910 | len = tsize; |
| 911 | if (wx) |
| 912 | error = smb_smb_writex(ssp, fid, &len, &resid, uio, scred); |
| 913 | else |
| 914 | error = smb_smb_write(ssp, fid, &len, &resid, uio, scred); |
| 915 | if (error != 0) |
| 916 | break; |
| 917 | if (resid < len) { |
| 918 | error = EIO; |
| 919 | break; |
| 920 | } |
| 921 | tsize -= resid; |
| 922 | } |
| 923 | return error; |
| 924 | } |
| 925 | |
| 926 | #if 0 |
| 927 | int |
| 928 | smb_smb_echo(struct smb_vc *vcp, struct smb_cred *scred) |
| 929 | { |
| 930 | struct smb_rq *rqp; |
| 931 | struct mbchain *mbp; |
| 932 | int error; |
| 933 | |
| 934 | error = smb_rq_alloc(VCTOCP(vcp), SMB_COM_ECHO, scred, &rqp); |
| 935 | if (error) |
| 936 | return error; |
| 937 | mbp = &rqp->sr_rq; |
| 938 | smb_rq_wstart(rqp); |
| 939 | mb_put_uint16le(mbp, 1); |
| 940 | smb_rq_wend(rqp); |
| 941 | smb_rq_bstart(rqp); |
| 942 | mb_put_uint32le(mbp, 0); |
| 943 | smb_rq_bend(rqp); |
| 944 | error = smb_rq_simple(rqp); |
| 945 | SMBSDEBUG(("%d\n" , error)); |
| 946 | smb_rq_done(rqp); |
| 947 | return error; |
| 948 | } |
| 949 | #endif |
| 950 | |