Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 1 | /* |
| 2 | * fs/cifs/sess.c |
| 3 | * |
| 4 | * SMB/CIFS session setup handling routines |
| 5 | * |
Steve French | d185cda | 2009-04-30 17:45:10 +0000 | [diff] [blame] | 6 | * Copyright (c) International Business Machines Corp., 2006, 2009 |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 7 | * Author(s): Steve French (sfrench@us.ibm.com) |
| 8 | * |
| 9 | * This library is free software; you can redistribute it and/or modify |
| 10 | * it under the terms of the GNU Lesser General Public License as published |
| 11 | * by the Free Software Foundation; either version 2.1 of the License, or |
| 12 | * (at your option) any later version. |
| 13 | * |
| 14 | * This library is distributed in the hope that it will be useful, |
| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See |
| 17 | * the GNU Lesser General Public License for more details. |
| 18 | * |
| 19 | * You should have received a copy of the GNU Lesser General Public License |
| 20 | * along with this library; if not, write to the Free Software |
| 21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 22 | */ |
| 23 | |
| 24 | #include "cifspdu.h" |
| 25 | #include "cifsglob.h" |
| 26 | #include "cifsproto.h" |
| 27 | #include "cifs_unicode.h" |
| 28 | #include "cifs_debug.h" |
| 29 | #include "ntlmssp.h" |
| 30 | #include "nterr.h" |
Steve French | 9c53588 | 2006-06-01 05:09:10 +0000 | [diff] [blame] | 31 | #include <linux/utsname.h> |
Steve French | 2442421 | 2007-11-16 23:37:35 +0000 | [diff] [blame] | 32 | #include "cifs_spnego.h" |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 33 | |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 34 | extern void SMBNTencrypt(unsigned char *passwd, unsigned char *c8, |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 35 | unsigned char *p24); |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 36 | |
Steve French | eca6acf | 2009-02-20 05:43:09 +0000 | [diff] [blame] | 37 | /* Checks if this is the first smb session to be reconnected after |
| 38 | the socket has been reestablished (so we know whether to use vc 0). |
| 39 | Called while holding the cifs_tcp_ses_lock, so do not block */ |
| 40 | static bool is_first_ses_reconnect(struct cifsSesInfo *ses) |
| 41 | { |
| 42 | struct list_head *tmp; |
| 43 | struct cifsSesInfo *tmp_ses; |
| 44 | |
| 45 | list_for_each(tmp, &ses->server->smb_ses_list) { |
| 46 | tmp_ses = list_entry(tmp, struct cifsSesInfo, |
| 47 | smb_ses_list); |
| 48 | if (tmp_ses->need_reconnect == false) |
| 49 | return false; |
| 50 | } |
| 51 | /* could not find a session that was already connected, |
| 52 | this must be the first one we are reconnecting */ |
| 53 | return true; |
| 54 | } |
| 55 | |
| 56 | /* |
| 57 | * vc number 0 is treated specially by some servers, and should be the |
| 58 | * first one we request. After that we can use vcnumbers up to maxvcs, |
| 59 | * one for each smb session (some Windows versions set maxvcs incorrectly |
| 60 | * so maxvc=1 can be ignored). If we have too many vcs, we can reuse |
| 61 | * any vc but zero (some servers reset the connection on vcnum zero) |
| 62 | * |
| 63 | */ |
| 64 | static __le16 get_next_vcnum(struct cifsSesInfo *ses) |
| 65 | { |
| 66 | __u16 vcnum = 0; |
| 67 | struct list_head *tmp; |
| 68 | struct cifsSesInfo *tmp_ses; |
| 69 | __u16 max_vcs = ses->server->max_vcs; |
| 70 | __u16 i; |
| 71 | int free_vc_found = 0; |
| 72 | |
| 73 | /* Quoting the MS-SMB specification: "Windows-based SMB servers set this |
| 74 | field to one but do not enforce this limit, which allows an SMB client |
| 75 | to establish more virtual circuits than allowed by this value ... but |
| 76 | other server implementations can enforce this limit." */ |
| 77 | if (max_vcs < 2) |
| 78 | max_vcs = 0xFFFF; |
| 79 | |
| 80 | write_lock(&cifs_tcp_ses_lock); |
| 81 | if ((ses->need_reconnect) && is_first_ses_reconnect(ses)) |
| 82 | goto get_vc_num_exit; /* vcnum will be zero */ |
| 83 | for (i = ses->server->srv_count - 1; i < max_vcs; i++) { |
| 84 | if (i == 0) /* this is the only connection, use vc 0 */ |
| 85 | break; |
| 86 | |
| 87 | free_vc_found = 1; |
| 88 | |
| 89 | list_for_each(tmp, &ses->server->smb_ses_list) { |
| 90 | tmp_ses = list_entry(tmp, struct cifsSesInfo, |
| 91 | smb_ses_list); |
| 92 | if (tmp_ses->vcnum == i) { |
| 93 | free_vc_found = 0; |
| 94 | break; /* found duplicate, try next vcnum */ |
| 95 | } |
| 96 | } |
| 97 | if (free_vc_found) |
| 98 | break; /* we found a vcnumber that will work - use it */ |
| 99 | } |
| 100 | |
| 101 | if (i == 0) |
| 102 | vcnum = 0; /* for most common case, ie if one smb session, use |
| 103 | vc zero. Also for case when no free vcnum, zero |
| 104 | is safest to send (some clients only send zero) */ |
| 105 | else if (free_vc_found == 0) |
| 106 | vcnum = 1; /* we can not reuse vc=0 safely, since some servers |
| 107 | reset all uids on that, but 1 is ok. */ |
| 108 | else |
| 109 | vcnum = i; |
| 110 | ses->vcnum = vcnum; |
| 111 | get_vc_num_exit: |
| 112 | write_unlock(&cifs_tcp_ses_lock); |
| 113 | |
Steve French | 051a2a0 | 2009-05-01 16:21:04 +0000 | [diff] [blame] | 114 | return cpu_to_le16(vcnum); |
Steve French | eca6acf | 2009-02-20 05:43:09 +0000 | [diff] [blame] | 115 | } |
| 116 | |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 117 | static __u32 cifs_ssetup_hdr(struct cifsSesInfo *ses, SESSION_SETUP_ANDX *pSMB) |
| 118 | { |
| 119 | __u32 capabilities = 0; |
| 120 | |
| 121 | /* init fields common to all four types of SessSetup */ |
Steve French | eca6acf | 2009-02-20 05:43:09 +0000 | [diff] [blame] | 122 | /* Note that offsets for first seven fields in req struct are same */ |
| 123 | /* in CIFS Specs so does not matter which of 3 forms of struct */ |
| 124 | /* that we use in next few lines */ |
| 125 | /* Note that header is initialized to zero in header_assemble */ |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 126 | pSMB->req.AndXCommand = 0xFF; |
| 127 | pSMB->req.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); |
| 128 | pSMB->req.MaxMpxCount = cpu_to_le16(ses->server->maxReq); |
Steve French | eca6acf | 2009-02-20 05:43:09 +0000 | [diff] [blame] | 129 | pSMB->req.VcNumber = get_next_vcnum(ses); |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 130 | |
| 131 | /* Now no need to set SMBFLG_CASELESS or obsolete CANONICAL PATH */ |
| 132 | |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 133 | /* BB verify whether signing required on neg or just on auth frame |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 134 | (and NTLM case) */ |
| 135 | |
| 136 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | |
| 137 | CAP_LARGE_WRITE_X | CAP_LARGE_READ_X; |
| 138 | |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 139 | if (ses->server->secMode & |
| 140 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 141 | pSMB->req.hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
| 142 | |
| 143 | if (ses->capabilities & CAP_UNICODE) { |
| 144 | pSMB->req.hdr.Flags2 |= SMBFLG2_UNICODE; |
| 145 | capabilities |= CAP_UNICODE; |
| 146 | } |
| 147 | if (ses->capabilities & CAP_STATUS32) { |
| 148 | pSMB->req.hdr.Flags2 |= SMBFLG2_ERR_STATUS; |
| 149 | capabilities |= CAP_STATUS32; |
| 150 | } |
| 151 | if (ses->capabilities & CAP_DFS) { |
| 152 | pSMB->req.hdr.Flags2 |= SMBFLG2_DFS; |
| 153 | capabilities |= CAP_DFS; |
| 154 | } |
Steve French | 26f5736 | 2007-08-30 22:09:15 +0000 | [diff] [blame] | 155 | if (ses->capabilities & CAP_UNIX) |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 156 | capabilities |= CAP_UNIX; |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 157 | |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 158 | return capabilities; |
| 159 | } |
| 160 | |
Jeff Layton | 0d3a01f | 2007-10-16 17:32:19 +0000 | [diff] [blame] | 161 | static void |
| 162 | unicode_oslm_strings(char **pbcc_area, const struct nls_table *nls_cp) |
| 163 | { |
| 164 | char *bcc_ptr = *pbcc_area; |
| 165 | int bytes_ret = 0; |
| 166 | |
| 167 | /* Copy OS version */ |
| 168 | bytes_ret = cifs_strtoUCS((__le16 *)bcc_ptr, "Linux version ", 32, |
| 169 | nls_cp); |
| 170 | bcc_ptr += 2 * bytes_ret; |
| 171 | bytes_ret = cifs_strtoUCS((__le16 *) bcc_ptr, init_utsname()->release, |
| 172 | 32, nls_cp); |
| 173 | bcc_ptr += 2 * bytes_ret; |
| 174 | bcc_ptr += 2; /* trailing null */ |
| 175 | |
| 176 | bytes_ret = cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS, |
| 177 | 32, nls_cp); |
| 178 | bcc_ptr += 2 * bytes_ret; |
| 179 | bcc_ptr += 2; /* trailing null */ |
| 180 | |
| 181 | *pbcc_area = bcc_ptr; |
| 182 | } |
| 183 | |
| 184 | static void unicode_domain_string(char **pbcc_area, struct cifsSesInfo *ses, |
| 185 | const struct nls_table *nls_cp) |
| 186 | { |
| 187 | char *bcc_ptr = *pbcc_area; |
| 188 | int bytes_ret = 0; |
| 189 | |
| 190 | /* copy domain */ |
| 191 | if (ses->domainName == NULL) { |
| 192 | /* Sending null domain better than using a bogus domain name (as |
| 193 | we did briefly in 2.6.18) since server will use its default */ |
| 194 | *bcc_ptr = 0; |
| 195 | *(bcc_ptr+1) = 0; |
| 196 | bytes_ret = 0; |
| 197 | } else |
| 198 | bytes_ret = cifs_strtoUCS((__le16 *) bcc_ptr, ses->domainName, |
| 199 | 256, nls_cp); |
| 200 | bcc_ptr += 2 * bytes_ret; |
| 201 | bcc_ptr += 2; /* account for null terminator */ |
| 202 | |
| 203 | *pbcc_area = bcc_ptr; |
| 204 | } |
| 205 | |
| 206 | |
Steve French | 3870253 | 2007-07-08 15:40:40 +0000 | [diff] [blame] | 207 | static void unicode_ssetup_strings(char **pbcc_area, struct cifsSesInfo *ses, |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 208 | const struct nls_table *nls_cp) |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 209 | { |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 210 | char *bcc_ptr = *pbcc_area; |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 211 | int bytes_ret = 0; |
| 212 | |
| 213 | /* BB FIXME add check that strings total less |
| 214 | than 335 or will need to send them as arrays */ |
| 215 | |
Steve French | 0223cf0 | 2006-06-27 19:50:57 +0000 | [diff] [blame] | 216 | /* unicode strings, must be word aligned before the call */ |
| 217 | /* if ((long) bcc_ptr % 2) { |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 218 | *bcc_ptr = 0; |
| 219 | bcc_ptr++; |
Steve French | 0223cf0 | 2006-06-27 19:50:57 +0000 | [diff] [blame] | 220 | } */ |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 221 | /* copy user */ |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 222 | if (ses->userName == NULL) { |
Steve French | 6e659c6 | 2006-11-08 23:10:46 +0000 | [diff] [blame] | 223 | /* null user mount */ |
| 224 | *bcc_ptr = 0; |
| 225 | *(bcc_ptr+1) = 0; |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 226 | } else { /* 300 should be long enough for any conceivable user name */ |
| 227 | bytes_ret = cifs_strtoUCS((__le16 *) bcc_ptr, ses->userName, |
| 228 | 300, nls_cp); |
| 229 | } |
| 230 | bcc_ptr += 2 * bytes_ret; |
| 231 | bcc_ptr += 2; /* account for null termination */ |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 232 | |
Jeff Layton | 0d3a01f | 2007-10-16 17:32:19 +0000 | [diff] [blame] | 233 | unicode_domain_string(&bcc_ptr, ses, nls_cp); |
| 234 | unicode_oslm_strings(&bcc_ptr, nls_cp); |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 235 | |
| 236 | *pbcc_area = bcc_ptr; |
| 237 | } |
| 238 | |
Steve French | 3870253 | 2007-07-08 15:40:40 +0000 | [diff] [blame] | 239 | static void ascii_ssetup_strings(char **pbcc_area, struct cifsSesInfo *ses, |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 240 | const struct nls_table *nls_cp) |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 241 | { |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 242 | char *bcc_ptr = *pbcc_area; |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 243 | |
| 244 | /* copy user */ |
| 245 | /* BB what about null user mounts - check that we do this BB */ |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 246 | /* copy user */ |
| 247 | if (ses->userName == NULL) { |
| 248 | /* BB what about null user mounts - check that we do this BB */ |
| 249 | } else { /* 300 should be long enough for any conceivable user name */ |
| 250 | strncpy(bcc_ptr, ses->userName, 300); |
| 251 | } |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 252 | /* BB improve check for overflow */ |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 253 | bcc_ptr += strnlen(ses->userName, 300); |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 254 | *bcc_ptr = 0; |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 255 | bcc_ptr++; /* account for null termination */ |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 256 | |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 257 | /* copy domain */ |
| 258 | |
| 259 | if (ses->domainName != NULL) { |
| 260 | strncpy(bcc_ptr, ses->domainName, 256); |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 261 | bcc_ptr += strnlen(ses->domainName, 256); |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 262 | } /* else we will send a null domain name |
Steve French | 6e659c6 | 2006-11-08 23:10:46 +0000 | [diff] [blame] | 263 | so the server will default to its own domain */ |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 264 | *bcc_ptr = 0; |
| 265 | bcc_ptr++; |
| 266 | |
| 267 | /* BB check for overflow here */ |
| 268 | |
| 269 | strcpy(bcc_ptr, "Linux version "); |
| 270 | bcc_ptr += strlen("Linux version "); |
Serge E. Hallyn | 96b644b | 2006-10-02 02:18:13 -0700 | [diff] [blame] | 271 | strcpy(bcc_ptr, init_utsname()->release); |
| 272 | bcc_ptr += strlen(init_utsname()->release) + 1; |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 273 | |
| 274 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); |
| 275 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; |
| 276 | |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 277 | *pbcc_area = bcc_ptr; |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 278 | } |
| 279 | |
Jeff Layton | 5914079 | 2009-04-30 07:16:21 -0400 | [diff] [blame] | 280 | static void |
| 281 | decode_unicode_ssetup(char **pbcc_area, int bleft, struct cifsSesInfo *ses, |
| 282 | const struct nls_table *nls_cp) |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 283 | { |
Jeff Layton | 5914079 | 2009-04-30 07:16:21 -0400 | [diff] [blame] | 284 | int len; |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 285 | char *data = *pbcc_area; |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 286 | |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 287 | cFYI(1, ("bleft %d", bleft)); |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 288 | |
Jeff Layton | 27b87fe | 2009-04-14 11:00:53 -0400 | [diff] [blame] | 289 | /* |
| 290 | * Windows servers do not always double null terminate their final |
| 291 | * Unicode string. Check to see if there are an uneven number of bytes |
| 292 | * left. If so, then add an extra NULL pad byte to the end of the |
| 293 | * response. |
| 294 | * |
| 295 | * See section 2.7.2 in "Implementing CIFS" for details |
| 296 | */ |
| 297 | if (bleft % 2) { |
| 298 | data[bleft] = 0; |
| 299 | ++bleft; |
| 300 | } |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 301 | |
Steve French | 26f5736 | 2007-08-30 22:09:15 +0000 | [diff] [blame] | 302 | kfree(ses->serverOS); |
Steve French | d185cda | 2009-04-30 17:45:10 +0000 | [diff] [blame] | 303 | ses->serverOS = cifs_strndup_from_ucs(data, bleft, true, nls_cp); |
Jeff Layton | 5914079 | 2009-04-30 07:16:21 -0400 | [diff] [blame] | 304 | cFYI(1, ("serverOS=%s", ses->serverOS)); |
| 305 | len = (UniStrnlen((wchar_t *) data, bleft / 2) * 2) + 2; |
| 306 | data += len; |
| 307 | bleft -= len; |
| 308 | if (bleft <= 0) |
| 309 | return; |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 310 | |
Steve French | 26f5736 | 2007-08-30 22:09:15 +0000 | [diff] [blame] | 311 | kfree(ses->serverNOS); |
Steve French | d185cda | 2009-04-30 17:45:10 +0000 | [diff] [blame] | 312 | ses->serverNOS = cifs_strndup_from_ucs(data, bleft, true, nls_cp); |
Jeff Layton | 5914079 | 2009-04-30 07:16:21 -0400 | [diff] [blame] | 313 | cFYI(1, ("serverNOS=%s", ses->serverNOS)); |
| 314 | len = (UniStrnlen((wchar_t *) data, bleft / 2) * 2) + 2; |
| 315 | data += len; |
| 316 | bleft -= len; |
| 317 | if (bleft <= 0) |
| 318 | return; |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 319 | |
Steve French | 26f5736 | 2007-08-30 22:09:15 +0000 | [diff] [blame] | 320 | kfree(ses->serverDomain); |
Steve French | d185cda | 2009-04-30 17:45:10 +0000 | [diff] [blame] | 321 | ses->serverDomain = cifs_strndup_from_ucs(data, bleft, true, nls_cp); |
Jeff Layton | 5914079 | 2009-04-30 07:16:21 -0400 | [diff] [blame] | 322 | cFYI(1, ("serverDomain=%s", ses->serverDomain)); |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 323 | |
Jeff Layton | 5914079 | 2009-04-30 07:16:21 -0400 | [diff] [blame] | 324 | return; |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 325 | } |
| 326 | |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 327 | static int decode_ascii_ssetup(char **pbcc_area, int bleft, |
| 328 | struct cifsSesInfo *ses, |
| 329 | const struct nls_table *nls_cp) |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 330 | { |
| 331 | int rc = 0; |
| 332 | int len; |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 333 | char *bcc_ptr = *pbcc_area; |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 334 | |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 335 | cFYI(1, ("decode sessetup ascii. bleft %d", bleft)); |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 336 | |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 337 | len = strnlen(bcc_ptr, bleft); |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 338 | if (len >= bleft) |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 339 | return rc; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 340 | |
Steve French | 26f5736 | 2007-08-30 22:09:15 +0000 | [diff] [blame] | 341 | kfree(ses->serverOS); |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 342 | |
| 343 | ses->serverOS = kzalloc(len + 1, GFP_KERNEL); |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 344 | if (ses->serverOS) |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 345 | strncpy(ses->serverOS, bcc_ptr, len); |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 346 | if (strncmp(ses->serverOS, "OS/2", 4) == 0) { |
| 347 | cFYI(1, ("OS/2 server")); |
Steve French | 9ac00b7 | 2006-09-30 04:13:17 +0000 | [diff] [blame] | 348 | ses->flags |= CIFS_SES_OS2; |
| 349 | } |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 350 | |
| 351 | bcc_ptr += len + 1; |
| 352 | bleft -= len + 1; |
| 353 | |
| 354 | len = strnlen(bcc_ptr, bleft); |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 355 | if (len >= bleft) |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 356 | return rc; |
| 357 | |
Steve French | 26f5736 | 2007-08-30 22:09:15 +0000 | [diff] [blame] | 358 | kfree(ses->serverNOS); |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 359 | |
| 360 | ses->serverNOS = kzalloc(len + 1, GFP_KERNEL); |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 361 | if (ses->serverNOS) |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 362 | strncpy(ses->serverNOS, bcc_ptr, len); |
| 363 | |
| 364 | bcc_ptr += len + 1; |
| 365 | bleft -= len + 1; |
| 366 | |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 367 | len = strnlen(bcc_ptr, bleft); |
| 368 | if (len > bleft) |
| 369 | return rc; |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 370 | |
Steve French | 9ac00b7 | 2006-09-30 04:13:17 +0000 | [diff] [blame] | 371 | /* No domain field in LANMAN case. Domain is |
| 372 | returned by old servers in the SMB negprot response */ |
| 373 | /* BB For newer servers which do not support Unicode, |
| 374 | but thus do return domain here we could add parsing |
| 375 | for it later, but it is not very important */ |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 376 | cFYI(1, ("ascii: bytes left %d", bleft)); |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 377 | |
| 378 | return rc; |
| 379 | } |
| 380 | |
Steve French | 0b3cc858 | 2009-05-04 08:37:12 +0000 | [diff] [blame] | 381 | static int decode_ntlmssp_challenge(char *bcc_ptr, int blob_len, |
| 382 | struct cifsSesInfo *ses) |
| 383 | { |
| 384 | CHALLENGE_MESSAGE *pblob = (CHALLENGE_MESSAGE *)bcc_ptr; |
| 385 | |
| 386 | if (blob_len < sizeof(CHALLENGE_MESSAGE)) { |
| 387 | cERROR(1, ("challenge blob len %d too small", blob_len)); |
| 388 | return -EINVAL; |
| 389 | } |
| 390 | |
| 391 | if (memcmp(pblob->Signature, "NTLMSSP", 8)) { |
| 392 | cERROR(1, ("blob signature incorrect %s", pblob->Signature)); |
| 393 | return -EINVAL; |
| 394 | } |
| 395 | if (pblob->MessageType != NtLmChallenge) { |
| 396 | cERROR(1, ("Incorrect message type %d", pblob->MessageType)); |
| 397 | return -EINVAL; |
| 398 | } |
| 399 | |
| 400 | memcpy(ses->server->cryptKey, pblob->Challenge, CIFS_CRYPTO_KEY_SIZE); |
| 401 | /* BB we could decode pblob->NegotiateFlags; some may be useful */ |
| 402 | /* In particular we can examine sign flags */ |
| 403 | /* BB spec says that if AvId field of MsvAvTimestamp is populated then |
| 404 | we must set the MIC field of the AUTHENTICATE_MESSAGE */ |
| 405 | |
| 406 | return 0; |
| 407 | } |
| 408 | |
| 409 | #ifdef CONFIG_CIFS_EXPERIMENTAL |
| 410 | /* BB Move to ntlmssp.c eventually */ |
| 411 | |
| 412 | /* We do not malloc the blob, it is passed in pbuffer, because |
| 413 | it is fixed size, and small, making this approach cleaner */ |
| 414 | static void build_ntlmssp_negotiate_blob(unsigned char *pbuffer, |
| 415 | struct cifsSesInfo *ses) |
| 416 | { |
| 417 | NEGOTIATE_MESSAGE *sec_blob = (NEGOTIATE_MESSAGE *)pbuffer; |
| 418 | __u32 flags; |
| 419 | |
| 420 | memcpy(sec_blob->Signature, NTLMSSP_SIGNATURE, 8); |
| 421 | sec_blob->MessageType = NtLmNegotiate; |
| 422 | |
| 423 | /* BB is NTLMV2 session security format easier to use here? */ |
| 424 | flags = NTLMSSP_NEGOTIATE_56 | NTLMSSP_REQUEST_TARGET | |
| 425 | NTLMSSP_NEGOTIATE_128 | NTLMSSP_NEGOTIATE_UNICODE | |
| 426 | NTLMSSP_NEGOTIATE_NT_ONLY | NTLMSSP_NEGOTIATE_NTLM; |
| 427 | if (ses->server->secMode & |
| 428 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
| 429 | flags |= NTLMSSP_NEGOTIATE_SIGN; |
| 430 | if (ses->server->secMode & SECMODE_SIGN_REQUIRED) |
| 431 | flags |= NTLMSSP_NEGOTIATE_ALWAYS_SIGN; |
| 432 | |
| 433 | sec_blob->NegotiateFlags |= cpu_to_le32(flags); |
| 434 | |
| 435 | sec_blob->WorkstationName.BufferOffset = 0; |
| 436 | sec_blob->WorkstationName.Length = 0; |
| 437 | sec_blob->WorkstationName.MaximumLength = 0; |
| 438 | |
| 439 | /* Domain name is sent on the Challenge not Negotiate NTLMSSP request */ |
| 440 | sec_blob->DomainName.BufferOffset = 0; |
| 441 | sec_blob->DomainName.Length = 0; |
| 442 | sec_blob->DomainName.MaximumLength = 0; |
| 443 | } |
| 444 | |
| 445 | /* We do not malloc the blob, it is passed in pbuffer, because its |
| 446 | maximum possible size is fixed and small, making this approach cleaner. |
| 447 | This function returns the length of the data in the blob */ |
| 448 | static int build_ntlmssp_auth_blob(unsigned char *pbuffer, |
| 449 | struct cifsSesInfo *ses, |
| 450 | const struct nls_table *nls_cp, int first) |
| 451 | { |
| 452 | AUTHENTICATE_MESSAGE *sec_blob = (AUTHENTICATE_MESSAGE *)pbuffer; |
| 453 | __u32 flags; |
| 454 | unsigned char *tmp; |
| 455 | char ntlm_session_key[CIFS_SESS_KEY_SIZE]; |
| 456 | |
| 457 | memcpy(sec_blob->Signature, NTLMSSP_SIGNATURE, 8); |
| 458 | sec_blob->MessageType = NtLmAuthenticate; |
| 459 | |
| 460 | flags = NTLMSSP_NEGOTIATE_56 | |
| 461 | NTLMSSP_REQUEST_TARGET | NTLMSSP_NEGOTIATE_TARGET_INFO | |
| 462 | NTLMSSP_NEGOTIATE_128 | NTLMSSP_NEGOTIATE_UNICODE | |
| 463 | NTLMSSP_NEGOTIATE_NT_ONLY | NTLMSSP_NEGOTIATE_NTLM; |
| 464 | if (ses->server->secMode & |
| 465 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
| 466 | flags |= NTLMSSP_NEGOTIATE_SIGN; |
| 467 | if (ses->server->secMode & SECMODE_SIGN_REQUIRED) |
| 468 | flags |= NTLMSSP_NEGOTIATE_ALWAYS_SIGN; |
| 469 | |
| 470 | tmp = pbuffer + sizeof(AUTHENTICATE_MESSAGE); |
| 471 | sec_blob->NegotiateFlags |= cpu_to_le32(flags); |
| 472 | |
| 473 | sec_blob->LmChallengeResponse.BufferOffset = |
| 474 | cpu_to_le32(sizeof(AUTHENTICATE_MESSAGE)); |
| 475 | sec_blob->LmChallengeResponse.Length = 0; |
| 476 | sec_blob->LmChallengeResponse.MaximumLength = 0; |
| 477 | |
| 478 | /* calculate session key, BB what about adding similar ntlmv2 path? */ |
| 479 | SMBNTencrypt(ses->password, ses->server->cryptKey, ntlm_session_key); |
| 480 | if (first) |
| 481 | cifs_calculate_mac_key(&ses->server->mac_signing_key, |
| 482 | ntlm_session_key, ses->password); |
| 483 | |
| 484 | memcpy(tmp, ntlm_session_key, CIFS_SESS_KEY_SIZE); |
| 485 | sec_blob->NtChallengeResponse.BufferOffset = cpu_to_le32(tmp - pbuffer); |
| 486 | sec_blob->NtChallengeResponse.Length = cpu_to_le16(CIFS_SESS_KEY_SIZE); |
| 487 | sec_blob->NtChallengeResponse.MaximumLength = |
| 488 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
| 489 | |
| 490 | tmp += CIFS_SESS_KEY_SIZE; |
| 491 | |
| 492 | if (ses->domainName == NULL) { |
| 493 | sec_blob->DomainName.BufferOffset = cpu_to_le32(tmp - pbuffer); |
| 494 | sec_blob->DomainName.Length = 0; |
| 495 | sec_blob->DomainName.MaximumLength = 0; |
| 496 | tmp += 2; |
| 497 | } else { |
| 498 | int len; |
| 499 | len = cifs_strtoUCS((__le16 *)tmp, ses->domainName, |
| 500 | MAX_USERNAME_SIZE, nls_cp); |
| 501 | len *= 2; /* unicode is 2 bytes each */ |
| 502 | len += 2; /* trailing null */ |
| 503 | sec_blob->DomainName.BufferOffset = cpu_to_le32(tmp - pbuffer); |
| 504 | sec_blob->DomainName.Length = cpu_to_le16(len); |
| 505 | sec_blob->DomainName.MaximumLength = cpu_to_le16(len); |
| 506 | tmp += len; |
| 507 | } |
| 508 | |
| 509 | if (ses->userName == NULL) { |
| 510 | sec_blob->UserName.BufferOffset = cpu_to_le32(tmp - pbuffer); |
| 511 | sec_blob->UserName.Length = 0; |
| 512 | sec_blob->UserName.MaximumLength = 0; |
| 513 | tmp += 2; |
| 514 | } else { |
| 515 | int len; |
| 516 | len = cifs_strtoUCS((__le16 *)tmp, ses->userName, |
| 517 | MAX_USERNAME_SIZE, nls_cp); |
| 518 | len *= 2; /* unicode is 2 bytes each */ |
| 519 | len += 2; /* trailing null */ |
| 520 | sec_blob->UserName.BufferOffset = cpu_to_le32(tmp - pbuffer); |
| 521 | sec_blob->UserName.Length = cpu_to_le16(len); |
| 522 | sec_blob->UserName.MaximumLength = cpu_to_le16(len); |
| 523 | tmp += len; |
| 524 | } |
| 525 | |
| 526 | sec_blob->WorkstationName.BufferOffset = cpu_to_le32(tmp - pbuffer); |
| 527 | sec_blob->WorkstationName.Length = 0; |
| 528 | sec_blob->WorkstationName.MaximumLength = 0; |
| 529 | tmp += 2; |
| 530 | |
| 531 | sec_blob->SessionKey.BufferOffset = cpu_to_le32(tmp - pbuffer); |
| 532 | sec_blob->SessionKey.Length = 0; |
| 533 | sec_blob->SessionKey.MaximumLength = 0; |
| 534 | return tmp - pbuffer; |
| 535 | } |
| 536 | |
| 537 | |
| 538 | static void setup_ntlmssp_neg_req(SESSION_SETUP_ANDX *pSMB, |
| 539 | struct cifsSesInfo *ses) |
| 540 | { |
| 541 | build_ntlmssp_negotiate_blob(&pSMB->req.SecurityBlob[0], ses); |
| 542 | pSMB->req.SecurityBlobLength = cpu_to_le16(sizeof(NEGOTIATE_MESSAGE)); |
| 543 | |
| 544 | return; |
| 545 | } |
| 546 | |
| 547 | static int setup_ntlmssp_auth_req(SESSION_SETUP_ANDX *pSMB, |
| 548 | struct cifsSesInfo *ses, |
| 549 | const struct nls_table *nls, int first_time) |
| 550 | { |
| 551 | int bloblen; |
| 552 | |
| 553 | bloblen = build_ntlmssp_auth_blob(&pSMB->req.SecurityBlob[0], ses, nls, |
| 554 | first_time); |
| 555 | pSMB->req.SecurityBlobLength = cpu_to_le16(bloblen); |
| 556 | |
| 557 | return bloblen; |
| 558 | } |
| 559 | #endif |
| 560 | |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 561 | int |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 562 | CIFS_SessSetup(unsigned int xid, struct cifsSesInfo *ses, int first_time, |
| 563 | const struct nls_table *nls_cp) |
| 564 | { |
| 565 | int rc = 0; |
| 566 | int wct; |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 567 | struct smb_hdr *smb_buf; |
| 568 | char *bcc_ptr; |
Steve French | 750d115 | 2006-06-27 06:28:30 +0000 | [diff] [blame] | 569 | char *str_area; |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 570 | SESSION_SETUP_ANDX *pSMB; |
| 571 | __u32 capabilities; |
| 572 | int count; |
Steve French | 2442421 | 2007-11-16 23:37:35 +0000 | [diff] [blame] | 573 | int resp_buf_type; |
| 574 | struct kvec iov[3]; |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 575 | enum securityEnum type; |
| 576 | __u16 action; |
| 577 | int bytes_remaining; |
Steve French | 2442421 | 2007-11-16 23:37:35 +0000 | [diff] [blame] | 578 | struct key *spnego_key = NULL; |
Steve French | 0b3cc858 | 2009-05-04 08:37:12 +0000 | [diff] [blame] | 579 | __le32 phase = NtLmNegotiate; /* NTLMSSP, if needed, is multistage */ |
Steve French | 254e55e | 2006-06-04 05:53:15 +0000 | [diff] [blame] | 580 | |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 581 | if (ses == NULL) |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 582 | return -EINVAL; |
| 583 | |
| 584 | type = ses->server->secType; |
Steve French | f40c562 | 2006-06-28 00:13:38 +0000 | [diff] [blame] | 585 | |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 586 | cFYI(1, ("sess setup type %d", type)); |
Steve French | 0b3cc858 | 2009-05-04 08:37:12 +0000 | [diff] [blame] | 587 | ssetup_ntlmssp_authenticate: |
| 588 | if (phase == NtLmChallenge) |
| 589 | phase = NtLmAuthenticate; /* if ntlmssp, now final phase */ |
| 590 | |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 591 | if (type == LANMAN) { |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 592 | #ifndef CONFIG_CIFS_WEAK_PW_HASH |
| 593 | /* LANMAN and plaintext are less secure and off by default. |
| 594 | So we make this explicitly be turned on in kconfig (in the |
| 595 | build) and turned on at runtime (changed from the default) |
| 596 | in proc/fs/cifs or via mount parm. Unfortunately this is |
| 597 | needed for old Win (e.g. Win95), some obscure NAS and OS/2 */ |
| 598 | return -EOPNOTSUPP; |
| 599 | #endif |
| 600 | wct = 10; /* lanman 2 style sessionsetup */ |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 601 | } else if ((type == NTLM) || (type == NTLMv2)) { |
Steve French | 9312f67 | 2006-06-04 22:21:07 +0000 | [diff] [blame] | 602 | /* For NTLMv2 failures eventually may need to retry NTLM */ |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 603 | wct = 13; /* old style NTLM sessionsetup */ |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 604 | } else /* same size: negotiate or auth, NTLMSSP or extended security */ |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 605 | wct = 12; |
| 606 | |
| 607 | rc = small_smb_init_no_tc(SMB_COM_SESSION_SETUP_ANDX, wct, ses, |
| 608 | (void **)&smb_buf); |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 609 | if (rc) |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 610 | return rc; |
| 611 | |
| 612 | pSMB = (SESSION_SETUP_ANDX *)smb_buf; |
| 613 | |
| 614 | capabilities = cifs_ssetup_hdr(ses, pSMB); |
Steve French | 750d115 | 2006-06-27 06:28:30 +0000 | [diff] [blame] | 615 | |
Steve French | 2442421 | 2007-11-16 23:37:35 +0000 | [diff] [blame] | 616 | /* we will send the SMB in three pieces: |
| 617 | a fixed length beginning part, an optional |
| 618 | SPNEGO blob (which can be zero length), and a |
| 619 | last part which will include the strings |
| 620 | and rest of bcc area. This allows us to avoid |
| 621 | a large buffer 17K allocation */ |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 622 | iov[0].iov_base = (char *)pSMB; |
| 623 | iov[0].iov_len = smb_buf->smb_buf_length + 4; |
Steve French | 750d115 | 2006-06-27 06:28:30 +0000 | [diff] [blame] | 624 | |
Steve French | 2442421 | 2007-11-16 23:37:35 +0000 | [diff] [blame] | 625 | /* setting this here allows the code at the end of the function |
| 626 | to free the request buffer if there's an error */ |
| 627 | resp_buf_type = CIFS_SMALL_BUFFER; |
| 628 | |
Steve French | 750d115 | 2006-06-27 06:28:30 +0000 | [diff] [blame] | 629 | /* 2000 big enough to fit max user, domain, NOS name etc. */ |
| 630 | str_area = kmalloc(2000, GFP_KERNEL); |
Cyrill Gorcunov | 5e6e623 | 2007-08-18 00:15:20 +0000 | [diff] [blame] | 631 | if (str_area == NULL) { |
Steve French | 2442421 | 2007-11-16 23:37:35 +0000 | [diff] [blame] | 632 | rc = -ENOMEM; |
| 633 | goto ssetup_exit; |
Cyrill Gorcunov | 5e6e623 | 2007-08-18 00:15:20 +0000 | [diff] [blame] | 634 | } |
Steve French | 750d115 | 2006-06-27 06:28:30 +0000 | [diff] [blame] | 635 | bcc_ptr = str_area; |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 636 | |
Steve French | 9ac00b7 | 2006-09-30 04:13:17 +0000 | [diff] [blame] | 637 | ses->flags &= ~CIFS_SES_LANMAN; |
| 638 | |
Steve French | 2442421 | 2007-11-16 23:37:35 +0000 | [diff] [blame] | 639 | iov[1].iov_base = NULL; |
| 640 | iov[1].iov_len = 0; |
| 641 | |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 642 | if (type == LANMAN) { |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 643 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
Steve French | 7c7b25b | 2006-06-01 19:20:10 +0000 | [diff] [blame] | 644 | char lnm_session_key[CIFS_SESS_KEY_SIZE]; |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 645 | |
Steve French | c76da9d | 2008-08-28 15:32:22 +0000 | [diff] [blame] | 646 | pSMB->req.hdr.Flags2 &= ~SMBFLG2_UNICODE; |
| 647 | |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 648 | /* no capabilities flags in old lanman negotiation */ |
| 649 | |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 650 | pSMB->old_req.PasswordLength = cpu_to_le16(CIFS_SESS_KEY_SIZE); |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 651 | /* BB calculate hash with password */ |
| 652 | /* and copy into bcc */ |
| 653 | |
Jeff Layton | 4e53a3f | 2008-12-05 20:41:21 -0500 | [diff] [blame] | 654 | calc_lanman_hash(ses->password, ses->server->cryptKey, |
| 655 | ses->server->secMode & SECMODE_PW_ENCRYPT ? |
| 656 | true : false, lnm_session_key); |
| 657 | |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 658 | ses->flags |= CIFS_SES_LANMAN; |
Steve French | 7c7b25b | 2006-06-01 19:20:10 +0000 | [diff] [blame] | 659 | memcpy(bcc_ptr, (char *)lnm_session_key, CIFS_SESS_KEY_SIZE); |
| 660 | bcc_ptr += CIFS_SESS_KEY_SIZE; |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 661 | |
| 662 | /* can not sign if LANMAN negotiated so no need |
| 663 | to calculate signing key? but what if server |
| 664 | changed to do higher than lanman dialect and |
| 665 | we reconnected would we ever calc signing_key? */ |
| 666 | |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 667 | cFYI(1, ("Negotiating LANMAN setting up strings")); |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 668 | /* Unicode not allowed for LANMAN dialects */ |
| 669 | ascii_ssetup_strings(&bcc_ptr, ses, nls_cp); |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 670 | #endif |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 671 | } else if (type == NTLM) { |
Steve French | 7c7b25b | 2006-06-01 19:20:10 +0000 | [diff] [blame] | 672 | char ntlm_session_key[CIFS_SESS_KEY_SIZE]; |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 673 | |
| 674 | pSMB->req_no_secext.Capabilities = cpu_to_le32(capabilities); |
| 675 | pSMB->req_no_secext.CaseInsensitivePasswordLength = |
Steve French | 7c7b25b | 2006-06-01 19:20:10 +0000 | [diff] [blame] | 676 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 677 | pSMB->req_no_secext.CaseSensitivePasswordLength = |
Steve French | 7c7b25b | 2006-06-01 19:20:10 +0000 | [diff] [blame] | 678 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 679 | |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 680 | /* calculate session key */ |
| 681 | SMBNTencrypt(ses->password, ses->server->cryptKey, |
| 682 | ntlm_session_key); |
| 683 | |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 684 | if (first_time) /* should this be moved into common code |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 685 | with similar ntlmv2 path? */ |
Steve French | b609f06 | 2007-07-09 07:55:14 +0000 | [diff] [blame] | 686 | cifs_calculate_mac_key(&ses->server->mac_signing_key, |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 687 | ntlm_session_key, ses->password); |
| 688 | /* copy session key */ |
| 689 | |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 690 | memcpy(bcc_ptr, (char *)ntlm_session_key, CIFS_SESS_KEY_SIZE); |
Steve French | 7c7b25b | 2006-06-01 19:20:10 +0000 | [diff] [blame] | 691 | bcc_ptr += CIFS_SESS_KEY_SIZE; |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 692 | memcpy(bcc_ptr, (char *)ntlm_session_key, CIFS_SESS_KEY_SIZE); |
Steve French | 7c7b25b | 2006-06-01 19:20:10 +0000 | [diff] [blame] | 693 | bcc_ptr += CIFS_SESS_KEY_SIZE; |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 694 | if (ses->capabilities & CAP_UNICODE) { |
Steve French | 0223cf0 | 2006-06-27 19:50:57 +0000 | [diff] [blame] | 695 | /* unicode strings must be word aligned */ |
| 696 | if (iov[0].iov_len % 2) { |
| 697 | *bcc_ptr = 0; |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 698 | bcc_ptr++; |
| 699 | } |
Steve French | 7c7b25b | 2006-06-01 19:20:10 +0000 | [diff] [blame] | 700 | unicode_ssetup_strings(&bcc_ptr, ses, nls_cp); |
Steve French | 0223cf0 | 2006-06-27 19:50:57 +0000 | [diff] [blame] | 701 | } else |
Steve French | 7c7b25b | 2006-06-01 19:20:10 +0000 | [diff] [blame] | 702 | ascii_ssetup_strings(&bcc_ptr, ses, nls_cp); |
| 703 | } else if (type == NTLMv2) { |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 704 | char *v2_sess_key = |
Steve French | 6d027cf | 2006-06-05 16:26:05 +0000 | [diff] [blame] | 705 | kmalloc(sizeof(struct ntlmv2_resp), GFP_KERNEL); |
Steve French | f64b23a | 2006-06-05 05:27:37 +0000 | [diff] [blame] | 706 | |
| 707 | /* BB FIXME change all users of v2_sess_key to |
| 708 | struct ntlmv2_resp */ |
Steve French | 7c7b25b | 2006-06-01 19:20:10 +0000 | [diff] [blame] | 709 | |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 710 | if (v2_sess_key == NULL) { |
Steve French | 2442421 | 2007-11-16 23:37:35 +0000 | [diff] [blame] | 711 | rc = -ENOMEM; |
| 712 | goto ssetup_exit; |
Steve French | 7c7b25b | 2006-06-01 19:20:10 +0000 | [diff] [blame] | 713 | } |
| 714 | |
| 715 | pSMB->req_no_secext.Capabilities = cpu_to_le32(capabilities); |
| 716 | |
| 717 | /* LM2 password would be here if we supported it */ |
| 718 | pSMB->req_no_secext.CaseInsensitivePasswordLength = 0; |
| 719 | /* cpu_to_le16(LM2_SESS_KEY_SIZE); */ |
| 720 | |
| 721 | pSMB->req_no_secext.CaseSensitivePasswordLength = |
Steve French | f64b23a | 2006-06-05 05:27:37 +0000 | [diff] [blame] | 722 | cpu_to_le16(sizeof(struct ntlmv2_resp)); |
Steve French | 7c7b25b | 2006-06-01 19:20:10 +0000 | [diff] [blame] | 723 | |
| 724 | /* calculate session key */ |
Steve French | 1717ffc | 2006-06-08 05:41:32 +0000 | [diff] [blame] | 725 | setup_ntlmv2_rsp(ses, v2_sess_key, nls_cp); |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 726 | if (first_time) /* should this be moved into common code |
| 727 | with similar ntlmv2 path? */ |
Steve French | 7c7b25b | 2006-06-01 19:20:10 +0000 | [diff] [blame] | 728 | /* cifs_calculate_ntlmv2_mac_key(ses->server->mac_signing_key, |
| 729 | response BB FIXME, v2_sess_key); */ |
| 730 | |
| 731 | /* copy session key */ |
| 732 | |
| 733 | /* memcpy(bcc_ptr, (char *)ntlm_session_key,LM2_SESS_KEY_SIZE); |
| 734 | bcc_ptr += LM2_SESS_KEY_SIZE; */ |
Steve French | 3870253 | 2007-07-08 15:40:40 +0000 | [diff] [blame] | 735 | memcpy(bcc_ptr, (char *)v2_sess_key, |
| 736 | sizeof(struct ntlmv2_resp)); |
Steve French | f64b23a | 2006-06-05 05:27:37 +0000 | [diff] [blame] | 737 | bcc_ptr += sizeof(struct ntlmv2_resp); |
| 738 | kfree(v2_sess_key); |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 739 | if (ses->capabilities & CAP_UNICODE) { |
| 740 | if (iov[0].iov_len % 2) { |
Steve French | 0223cf0 | 2006-06-27 19:50:57 +0000 | [diff] [blame] | 741 | *bcc_ptr = 0; |
Steve French | 26f5736 | 2007-08-30 22:09:15 +0000 | [diff] [blame] | 742 | bcc_ptr++; |
| 743 | } |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 744 | unicode_ssetup_strings(&bcc_ptr, ses, nls_cp); |
Steve French | 0223cf0 | 2006-06-27 19:50:57 +0000 | [diff] [blame] | 745 | } else |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 746 | ascii_ssetup_strings(&bcc_ptr, ses, nls_cp); |
Steve French | c16fefa | 2008-08-19 19:35:33 +0000 | [diff] [blame] | 747 | } else if (type == Kerberos || type == MSKerberos) { |
Steve French | 2442421 | 2007-11-16 23:37:35 +0000 | [diff] [blame] | 748 | #ifdef CONFIG_CIFS_UPCALL |
| 749 | struct cifs_spnego_msg *msg; |
| 750 | spnego_key = cifs_get_spnego_key(ses); |
| 751 | if (IS_ERR(spnego_key)) { |
| 752 | rc = PTR_ERR(spnego_key); |
| 753 | spnego_key = NULL; |
| 754 | goto ssetup_exit; |
| 755 | } |
| 756 | |
| 757 | msg = spnego_key->payload.data; |
Steve French | 6ce5eec | 2008-08-26 00:37:14 +0000 | [diff] [blame] | 758 | /* check version field to make sure that cifs.upcall is |
| 759 | sending us a response in an expected form */ |
| 760 | if (msg->version != CIFS_SPNEGO_UPCALL_VERSION) { |
| 761 | cERROR(1, ("incorrect version of cifs.upcall (expected" |
| 762 | " %d but got %d)", |
| 763 | CIFS_SPNEGO_UPCALL_VERSION, msg->version)); |
| 764 | rc = -EKEYREJECTED; |
| 765 | goto ssetup_exit; |
| 766 | } |
Steve French | 2442421 | 2007-11-16 23:37:35 +0000 | [diff] [blame] | 767 | /* bail out if key is too long */ |
| 768 | if (msg->sesskey_len > |
| 769 | sizeof(ses->server->mac_signing_key.data.krb5)) { |
| 770 | cERROR(1, ("Kerberos signing key too long (%u bytes)", |
| 771 | msg->sesskey_len)); |
| 772 | rc = -EOVERFLOW; |
| 773 | goto ssetup_exit; |
| 774 | } |
Jeff Layton | 1a67570 | 2007-12-31 04:03:02 +0000 | [diff] [blame] | 775 | if (first_time) { |
| 776 | ses->server->mac_signing_key.len = msg->sesskey_len; |
| 777 | memcpy(ses->server->mac_signing_key.data.krb5, |
| 778 | msg->data, msg->sesskey_len); |
| 779 | } |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 780 | pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC; |
| 781 | capabilities |= CAP_EXTENDED_SECURITY; |
| 782 | pSMB->req.Capabilities = cpu_to_le32(capabilities); |
Steve French | 2442421 | 2007-11-16 23:37:35 +0000 | [diff] [blame] | 783 | iov[1].iov_base = msg->data + msg->sesskey_len; |
| 784 | iov[1].iov_len = msg->secblob_len; |
| 785 | pSMB->req.SecurityBlobLength = cpu_to_le16(iov[1].iov_len); |
| 786 | |
| 787 | if (ses->capabilities & CAP_UNICODE) { |
| 788 | /* unicode strings must be word aligned */ |
Jeff Layton | 28c5a02 | 2007-12-31 04:56:21 +0000 | [diff] [blame] | 789 | if ((iov[0].iov_len + iov[1].iov_len) % 2) { |
Steve French | 2442421 | 2007-11-16 23:37:35 +0000 | [diff] [blame] | 790 | *bcc_ptr = 0; |
| 791 | bcc_ptr++; |
| 792 | } |
| 793 | unicode_oslm_strings(&bcc_ptr, nls_cp); |
| 794 | unicode_domain_string(&bcc_ptr, ses, nls_cp); |
| 795 | } else |
| 796 | /* BB: is this right? */ |
| 797 | ascii_ssetup_strings(&bcc_ptr, ses, nls_cp); |
| 798 | #else /* ! CONFIG_CIFS_UPCALL */ |
| 799 | cERROR(1, ("Kerberos negotiated but upcall support disabled!")); |
| 800 | rc = -ENOSYS; |
| 801 | goto ssetup_exit; |
| 802 | #endif /* CONFIG_CIFS_UPCALL */ |
| 803 | } else { |
Steve French | 0b3cc858 | 2009-05-04 08:37:12 +0000 | [diff] [blame] | 804 | #ifdef CONFIG_CIFS_EXPERIMENTAL |
| 805 | if ((experimEnabled > 1) && (type == RawNTLMSSP)) { |
| 806 | if ((pSMB->req.hdr.Flags2 & SMBFLG2_UNICODE) == 0) { |
| 807 | cERROR(1, ("NTLMSSP requires Unicode support")); |
| 808 | rc = -ENOSYS; |
| 809 | goto ssetup_exit; |
| 810 | } |
| 811 | |
| 812 | cFYI(1, ("ntlmssp session setup phase %d", phase)); |
| 813 | pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC; |
| 814 | capabilities |= CAP_EXTENDED_SECURITY; |
| 815 | pSMB->req.Capabilities |= cpu_to_le32(capabilities); |
| 816 | if (phase == NtLmNegotiate) { |
| 817 | setup_ntlmssp_neg_req(pSMB, ses); |
| 818 | iov[1].iov_len = sizeof(NEGOTIATE_MESSAGE); |
| 819 | } else if (phase == NtLmAuthenticate) { |
| 820 | int blob_len; |
| 821 | blob_len = setup_ntlmssp_auth_req(pSMB, ses, |
| 822 | nls_cp, |
| 823 | first_time); |
| 824 | iov[1].iov_len = blob_len; |
Steve French | 844823c | 2009-05-06 00:48:30 +0000 | [diff] [blame] | 825 | /* Make sure that we tell the server that we |
| 826 | are using the uid that it just gave us back |
| 827 | on the response (challenge) */ |
| 828 | smb_buf->Uid = ses->Suid; |
Steve French | 0b3cc858 | 2009-05-04 08:37:12 +0000 | [diff] [blame] | 829 | } else { |
| 830 | cERROR(1, ("invalid phase %d", phase)); |
| 831 | rc = -ENOSYS; |
| 832 | goto ssetup_exit; |
| 833 | } |
| 834 | iov[1].iov_base = &pSMB->req.SecurityBlob[0]; |
| 835 | /* unicode strings must be word aligned */ |
| 836 | if ((iov[0].iov_len + iov[1].iov_len) % 2) { |
| 837 | *bcc_ptr = 0; |
| 838 | bcc_ptr++; |
| 839 | } |
| 840 | unicode_oslm_strings(&bcc_ptr, nls_cp); |
| 841 | } else { |
| 842 | cERROR(1, ("secType %d not supported!", type)); |
| 843 | rc = -ENOSYS; |
| 844 | goto ssetup_exit; |
| 845 | } |
| 846 | #else |
Steve French | 2442421 | 2007-11-16 23:37:35 +0000 | [diff] [blame] | 847 | cERROR(1, ("secType %d not supported!", type)); |
| 848 | rc = -ENOSYS; |
| 849 | goto ssetup_exit; |
Steve French | 0b3cc858 | 2009-05-04 08:37:12 +0000 | [diff] [blame] | 850 | #endif |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 851 | } |
| 852 | |
Steve French | 2442421 | 2007-11-16 23:37:35 +0000 | [diff] [blame] | 853 | iov[2].iov_base = str_area; |
| 854 | iov[2].iov_len = (long) bcc_ptr - (long) str_area; |
| 855 | |
| 856 | count = iov[1].iov_len + iov[2].iov_len; |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 857 | smb_buf->smb_buf_length += count; |
| 858 | |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 859 | BCC_LE(smb_buf) = cpu_to_le16(count); |
| 860 | |
Steve French | 2442421 | 2007-11-16 23:37:35 +0000 | [diff] [blame] | 861 | rc = SendReceive2(xid, ses, iov, 3 /* num_iovecs */, &resp_buf_type, |
Steve French | 133672e | 2007-11-13 22:41:37 +0000 | [diff] [blame] | 862 | CIFS_STD_OP /* not long */ | CIFS_LOG_ERROR); |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 863 | /* SMB request buf freed in SendReceive2 */ |
| 864 | |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 865 | cFYI(1, ("ssetup rc from sendrecv2 is %d", rc)); |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 866 | |
| 867 | pSMB = (SESSION_SETUP_ANDX *)iov[0].iov_base; |
| 868 | smb_buf = (struct smb_hdr *)iov[0].iov_base; |
| 869 | |
Steve French | 0b3cc858 | 2009-05-04 08:37:12 +0000 | [diff] [blame] | 870 | if ((type == RawNTLMSSP) && (smb_buf->Status.CifsError == |
| 871 | cpu_to_le32(NT_STATUS_MORE_PROCESSING_REQUIRED))) { |
| 872 | if (phase != NtLmNegotiate) { |
| 873 | cERROR(1, ("Unexpected more processing error")); |
| 874 | goto ssetup_exit; |
| 875 | } |
| 876 | /* NTLMSSP Negotiate sent now processing challenge (response) */ |
| 877 | phase = NtLmChallenge; /* process ntlmssp challenge */ |
| 878 | rc = 0; /* MORE_PROC rc is not an error here, but expected */ |
| 879 | } |
| 880 | if (rc) |
| 881 | goto ssetup_exit; |
| 882 | |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 883 | if ((smb_buf->WordCount != 3) && (smb_buf->WordCount != 4)) { |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 884 | rc = -EIO; |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 885 | cERROR(1, ("bad word count %d", smb_buf->WordCount)); |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 886 | goto ssetup_exit; |
| 887 | } |
| 888 | action = le16_to_cpu(pSMB->resp.Action); |
| 889 | if (action & GUEST_LOGIN) |
Steve French | 189acaa | 2006-06-23 02:33:48 +0000 | [diff] [blame] | 890 | cFYI(1, ("Guest login")); /* BB mark SesInfo struct? */ |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 891 | ses->Suid = smb_buf->Uid; /* UID left in wire format (le) */ |
| 892 | cFYI(1, ("UID = %d ", ses->Suid)); |
| 893 | /* response can have either 3 or 4 word count - Samba sends 3 */ |
| 894 | /* and lanman response is 3 */ |
| 895 | bytes_remaining = BCC(smb_buf); |
| 896 | bcc_ptr = pByteArea(smb_buf); |
| 897 | |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 898 | if (smb_buf->WordCount == 4) { |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 899 | __u16 blob_len; |
| 900 | blob_len = le16_to_cpu(pSMB->resp.SecurityBlobLength); |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 901 | if (blob_len > bytes_remaining) { |
| 902 | cERROR(1, ("bad security blob length %d", blob_len)); |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 903 | rc = -EINVAL; |
| 904 | goto ssetup_exit; |
| 905 | } |
Steve French | 0b3cc858 | 2009-05-04 08:37:12 +0000 | [diff] [blame] | 906 | if (phase == NtLmChallenge) { |
| 907 | rc = decode_ntlmssp_challenge(bcc_ptr, blob_len, ses); |
| 908 | /* now goto beginning for ntlmssp authenticate phase */ |
| 909 | if (rc) |
| 910 | goto ssetup_exit; |
| 911 | } |
| 912 | bcc_ptr += blob_len; |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 913 | bytes_remaining -= blob_len; |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 914 | } |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 915 | |
| 916 | /* BB check if Unicode and decode strings */ |
Jeff Layton | 27b87fe | 2009-04-14 11:00:53 -0400 | [diff] [blame] | 917 | if (smb_buf->Flags2 & SMBFLG2_UNICODE) { |
| 918 | /* unicode string area must be word-aligned */ |
| 919 | if (((unsigned long) bcc_ptr - (unsigned long) smb_buf) % 2) { |
| 920 | ++bcc_ptr; |
| 921 | --bytes_remaining; |
| 922 | } |
Jeff Layton | 5914079 | 2009-04-30 07:16:21 -0400 | [diff] [blame] | 923 | decode_unicode_ssetup(&bcc_ptr, bytes_remaining, ses, nls_cp); |
Jeff Layton | 27b87fe | 2009-04-14 11:00:53 -0400 | [diff] [blame] | 924 | } else { |
Steve French | 63135e0 | 2007-07-17 17:34:02 +0000 | [diff] [blame] | 925 | rc = decode_ascii_ssetup(&bcc_ptr, bytes_remaining, |
| 926 | ses, nls_cp); |
Jeff Layton | 27b87fe | 2009-04-14 11:00:53 -0400 | [diff] [blame] | 927 | } |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 928 | |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 929 | ssetup_exit: |
Jeff Layton | dfd15c46 | 2008-09-24 11:32:59 -0400 | [diff] [blame] | 930 | if (spnego_key) { |
| 931 | key_revoke(spnego_key); |
Steve French | 2442421 | 2007-11-16 23:37:35 +0000 | [diff] [blame] | 932 | key_put(spnego_key); |
Jeff Layton | dfd15c46 | 2008-09-24 11:32:59 -0400 | [diff] [blame] | 933 | } |
Steve French | 750d115 | 2006-06-27 06:28:30 +0000 | [diff] [blame] | 934 | kfree(str_area); |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 935 | if (resp_buf_type == CIFS_SMALL_BUFFER) { |
| 936 | cFYI(1, ("ssetup freeing small buf %p", iov[0].iov_base)); |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 937 | cifs_small_buf_release(iov[0].iov_base); |
Steve French | 790fe57 | 2007-07-07 19:25:05 +0000 | [diff] [blame] | 938 | } else if (resp_buf_type == CIFS_LARGE_BUFFER) |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 939 | cifs_buf_release(iov[0].iov_base); |
| 940 | |
Steve French | 0b3cc858 | 2009-05-04 08:37:12 +0000 | [diff] [blame] | 941 | /* if ntlmssp, and negotiate succeeded, proceed to authenticate phase */ |
| 942 | if ((phase == NtLmChallenge) && (rc == 0)) |
| 943 | goto ssetup_ntlmssp_authenticate; |
| 944 | |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 945 | return rc; |
| 946 | } |