2 Unix SMB/Netbios implementation.
4 Password and authentication handling
5 Copyright (C) Andrew Tridgell 1992-1998
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 extern int DEBUGLEVEL;
27 /* users from session setup */
28 static pstring session_users="";
31 extern pstring global_myname;
32 extern fstring global_myworkgroup;
34 /* Data to do lanman1/2 password challenge. */
35 static unsigned char saved_challenge[8];
36 static BOOL challenge_sent=False;
38 /*******************************************************************
39 Get the next challenge value - no repeats.
40 ********************************************************************/
41 void generate_next_challenge(char *challenge)
45 * Leave this ifdef'd out while we test
46 * the new crypto random number generator.
49 unsigned char buf[16];
50 static int counter = 0;
54 /* get a sort-of random number */
56 v1 = (counter++) + getpid() + tval.tv_sec;
57 v2 = (counter++) * getpid() + tval.tv_usec;
58 SIVAL(challenge,0,v1);
59 SIVAL(challenge,4,v2);
61 /* mash it up with md4 */
62 mdfour(buf, (unsigned char *)challenge, 8);
66 generate_random_buffer(buf,8,False);
68 memcpy(saved_challenge, buf, 8);
69 memcpy(challenge,buf,8);
70 challenge_sent = True;
73 /*******************************************************************
74 set the last challenge sent, usually from a password server
75 ********************************************************************/
76 BOOL set_challenge(unsigned char *challenge)
78 memcpy(saved_challenge,challenge,8);
79 challenge_sent = True;
83 /*******************************************************************
84 get the last challenge sent
85 ********************************************************************/
86 static BOOL last_challenge(unsigned char *challenge)
88 if (!challenge_sent) return(False);
89 memcpy(challenge,saved_challenge,8);
93 /* this holds info on user ids that are already validated for this VC */
94 static user_struct *validated_users = NULL;
95 static int num_validated_users = 0;
97 /****************************************************************************
98 check if a uid has been validated, and return an pointer to the user_struct
99 if it has. NULL if not. vuid is biased by an offset. This allows us to
100 tell random client vuid's (normally zero) from valid vuids.
101 ****************************************************************************/
102 user_struct *get_valid_user_struct(uint16 vuid)
104 if (vuid == UID_FIELD_INVALID)
107 if ((vuid >= (uint16)num_validated_users) ||
108 (validated_users[vuid].uid == (uid_t)-1) || (validated_users[vuid].gid == (gid_t)-1))
110 return &validated_users[vuid];
113 /****************************************************************************
115 ****************************************************************************/
116 void invalidate_vuid(uint16 vuid)
118 user_struct *vuser = get_valid_user_struct(vuid);
120 if (vuser == NULL) return;
122 vuser->uid = (uid_t)-1;
123 vuser->gid = (gid_t)-1;
127 /* same number of igroups as groups */
131 free((char *)vuser->groups);
134 free((char *)vuser->sids);
137 vuser->groups = NULL;
141 /****************************************************************************
142 return a validated username
143 ****************************************************************************/
144 char *validated_username(uint16 vuid)
146 user_struct *vuser = get_valid_user_struct(vuid);
154 /****************************************************************************
155 register a uid/name pair as being valid and that a valid password
156 has been given. vuid is biased by an offset. This allows us to
157 tell random client vuid's (normally zero) from valid vuids.
158 ****************************************************************************/
159 uint16 register_vuid(uid_t uid,gid_t gid, char *unix_name, char *requested_name, BOOL guest)
162 struct passwd *pwfile; /* for getting real name from passwd file */
164 /* Ensure no vuid gets registered in share level security. */
165 if(lp_security() == SEC_SHARE)
166 return UID_FIELD_INVALID;
170 * After observing MS-Exchange services writing to a Samba share
171 * I belive this code is incorrect. Each service does its own
172 * sessionsetup_and_X for the same user, and as each service shuts
173 * down, it does a user_logoff_and_X. As we are consolidating multiple
174 * sessionsetup_and_X's onto the same vuid here, when the first service
175 * shuts down, it invalidates all the open files for the other services.
176 * Hence I am removing this code and forcing each sessionsetup_and_X
178 * Jeremy Allison. (jallison@whistle.com).
182 for(i = 0; i < num_validated_users; i++) {
183 vuser = &validated_users[i];
184 if ( vuser->uid == uid )
185 return (uint16)(i + VUID_OFFSET); /* User already validated */
189 validated_users = (user_struct *)Realloc(validated_users,
191 (num_validated_users+1));
193 if (!validated_users)
195 DEBUG(0,("Failed to realloc users struct!\n"));
196 num_validated_users = 0;
197 return UID_FIELD_INVALID;
200 vuser = &validated_users[num_validated_users];
201 num_validated_users++;
205 vuser->guest = guest;
206 fstrcpy(vuser->name,unix_name);
207 fstrcpy(vuser->requested_name,requested_name);
213 vuser->groups = NULL;
215 /* Find all the groups this uid is in and store them.
216 Used by become_user() */
217 get_unixgroups(unix_name,uid,gid,
221 DEBUG(3,("uid %d registered to name %s\n",(int)uid,unix_name));
223 DEBUG(3, ("Clearing default real name\n"));
224 fstrcpy(vuser->real_name, "<Full Name>\0");
225 if (lp_unix_realname()) {
226 if ((pwfile=getpwnam(vuser->name))!= NULL)
228 DEBUG(3, ("User name: %s\tReal name: %s\n",vuser->name,pwfile->pw_gecos));
229 fstrcpy(vuser->real_name, pwfile->pw_gecos);
233 return (uint16)((num_validated_users - 1) + VUID_OFFSET);
237 /****************************************************************************
238 add a name to the session users list
239 ****************************************************************************/
240 void add_session_user(char *user)
243 StrnCpy(suser,user,sizeof(suser)-1);
245 if (!Get_Pwnam(suser,True)) return;
247 if (suser && *suser && !in_list(suser,session_users,False))
249 if (strlen(suser) + strlen(session_users) + 2 >= sizeof(pstring))
250 DEBUG(1,("Too many session users??\n"));
253 pstrcat(session_users," ");
254 pstrcat(session_users,suser);
260 /****************************************************************************
261 update the encrypted smbpasswd file from the plaintext username and password
262 *****************************************************************************/
263 static BOOL update_smbpassword_file(char *user, char *password)
265 struct smb_passwd *smbpw;
269 smbpw = getsmbpwnam(user);
273 DEBUG(0,("getsmbpwnam returned NULL\n"));
277 /* Here, the flag is one, because we want to ignore the
278 XXXXXXX'd out password */
279 ret = change_oem_password( smbpw, password, True);
281 DEBUG(3,("change_oem_password returned False\n"));
291 /****************************************************************************
292 core of smb password checking routine.
293 ****************************************************************************/
294 BOOL smb_password_check(char *password, unsigned char *part_passwd, unsigned char *c8)
296 /* Finish the encryption of part_passwd. */
297 unsigned char p21[21];
298 unsigned char p24[24];
300 if (part_passwd == NULL)
301 DEBUG(10,("No password set - allowing access\n"));
302 /* No password set - always true ! */
303 if (part_passwd == NULL)
307 memcpy(p21,part_passwd,16);
312 DEBUG(100,("Part password (P16) was |"));
313 for(i = 0; i < 16; i++)
314 DEBUG(100,("%X ", (unsigned char)part_passwd[i]));
316 DEBUG(100,("Password from client was |"));
317 for(i = 0; i < 24; i++)
318 DEBUG(100,("%X ", (unsigned char)password[i]));
320 DEBUG(100,("Given challenge was |"));
321 for(i = 0; i < 8; i++)
322 DEBUG(100,("%X ", (unsigned char)c8[i]));
324 DEBUG(100,("Value from encryption was |"));
325 for(i = 0; i < 24; i++)
326 DEBUG(100,("%X ", (unsigned char)p24[i]));
330 return (memcmp(p24, password, 24) == 0);
333 /****************************************************************************
334 Do a specific test for an smb password being correct, given a smb_password and
335 the lanman and NT responses.
336 ****************************************************************************/
337 BOOL smb_password_ok(struct smb_passwd *smb_pass, uchar chal[8],
338 uchar lm_pass[24], uchar nt_pass[24])
342 if (!lm_pass || !smb_pass) return(False);
344 DEBUG(4,("Checking SMB password for user %s\n",
345 smb_pass->unix_name));
347 if(smb_pass->acct_ctrl & ACB_DISABLED) {
348 DEBUG(3,("account for user %s was disabled.\n",
349 smb_pass->unix_name));
355 DEBUG(5,("use last SMBnegprot challenge\n"));
356 if (!last_challenge(challenge))
358 DEBUG(1,("no challenge done - password failed\n"));
364 DEBUG(5,("challenge received\n"));
365 memcpy(challenge, chal, 8);
368 if ((Protocol >= PROTOCOL_NT1) && (smb_pass->smb_nt_passwd != NULL)) {
369 /* We have the NT MD4 hash challenge available - see if we can
370 use it (ie. does it exist in the smbpasswd file).
372 DEBUG(4,("smb_password_ok: Checking NT MD4 password\n"));
373 if (smb_password_check((char *)nt_pass,
374 (uchar *)smb_pass->smb_nt_passwd,
376 DEBUG(4,("NT MD4 password check succeeded\n"));
379 DEBUG(4,("NT MD4 password check failed\n"));
382 /* Try against the lanman password. smb_pass->smb_passwd == NULL means
383 no password, allow access. */
385 DEBUG(4,("Checking LM MD4 password\n"));
387 if((smb_pass->smb_passwd == NULL) &&
388 (smb_pass->acct_ctrl & ACB_PWNOTREQ)) {
389 DEBUG(4,("no password required for user %s\n",
390 smb_pass->unix_name));
394 if((smb_pass->smb_passwd != NULL) &&
395 smb_password_check((char *)lm_pass,
396 (uchar *)smb_pass->smb_passwd, challenge)) {
397 DEBUG(4,("LM MD4 password check succeeded\n"));
401 DEBUG(4,("LM MD4 password check failed\n"));
407 /****************************************************************************
408 check if a username/password is OK assuming the password is a 24 byte
410 return True if the password is correct, False otherwise
411 ****************************************************************************/
413 BOOL pass_check_smb(char *user, char *domain,
414 uchar *chal, uchar *lm_pwd, uchar *nt_pwd,
418 struct smb_passwd *smb_pass;
420 if (!lm_pwd || !nt_pwd)
425 if (pwd != NULL && user == NULL)
427 pass = (struct passwd *) pwd;
428 user = pass->pw_name;
432 pass = Get_Pwnam(user,True);
437 DEBUG(3,("Couldn't find user %s\n",user));
441 smb_pass = getsmbpwnam(user);
443 if (smb_pass == NULL)
445 DEBUG(3,("Couldn't find user %s in smb_passwd file.\n", user));
449 /* Quit if the account was disabled. */
450 if(smb_pass->acct_ctrl & ACB_DISABLED) {
451 DEBUG(3,("account for user %s was disabled.\n", user));
455 /* Ensure the uid's match */
456 if (smb_pass->unix_uid != pass->pw_uid)
458 DEBUG(3,("Error : UNIX and SMB uids in password files do not match !\n"));
462 if (lm_pwd[0] == '\0' && IS_BITS_SET_ALL(smb_pass->acct_ctrl, ACB_PWNOTREQ) && lp_null_passwords())
464 DEBUG(3,("account for user %s has no password and null passwords are allowed.\n", smb_pass->unix_name));
468 if (smb_password_ok(smb_pass, chal, lm_pwd, nt_pwd))
473 DEBUG(3,("Error smb_password_check failed\n"));
477 /****************************************************************************
478 check if a username/password pair is OK either via the system password
479 database or the encrypted SMB password database
480 return True if the password is correct, False otherwise
481 ****************************************************************************/
482 BOOL password_ok(char *user, char *password, int pwlen, struct passwd *pwd)
484 if (pwlen == 24 || (lp_encrypted_passwords() && (pwlen == 0) && lp_null_passwords()))
486 /* if 24 bytes long assume it is an encrypted password */
489 if (!last_challenge(challenge))
491 DEBUG(0,("Error: challenge not done for user=%s\n", user));
495 return pass_check_smb(user, global_myworkgroup,
496 challenge, (uchar *)password, (uchar *)password, pwd);
499 return pass_check(user, password, pwlen, pwd,
500 lp_update_encrypted() ?
501 update_smbpassword_file : NULL);
504 /****************************************************************************
505 check if a username is valid
506 ****************************************************************************/
507 BOOL user_ok(char *user,int snum)
509 pstring valid, invalid;
512 StrnCpy(valid, lp_valid_users(snum), sizeof(pstring));
513 StrnCpy(invalid, lp_invalid_users(snum), sizeof(pstring));
515 string_sub(valid,"%S",lp_servicename(snum));
516 string_sub(invalid,"%S",lp_servicename(snum));
518 ret = !user_in_list(user,invalid);
520 if (ret && valid && *valid) {
521 ret = user_in_list(user,valid);
524 if (ret && lp_onlyuser(snum)) {
525 char *user_list = lp_username(snum);
526 string_sub(user_list,"%S",lp_servicename(snum));
527 ret = user_in_list(user,user_list);
536 /****************************************************************************
537 validate a group username entry. Return the username or NULL
538 ****************************************************************************/
539 static char *validate_group(char *group,char *password,int pwlen,int snum)
541 #if defined(HAVE_NETGROUP) && defined(HAVE_GETNETGRENT) && defined(HAVE_SETNETGRENT) && defined(HAVE_ENDNETGRENT)
543 char *host, *user, *domain;
545 while (getnetgrent(&host, &user, &domain)) {
547 if (user_ok(user, snum) &&
548 password_ok(user,password,pwlen,NULL)) {
560 struct group *gptr = (struct group *)getgrnam(group);
564 member = gptr->gr_mem;
565 while (member && *member)
568 fstrcpy(name,*member);
569 if (user_ok(name,snum) &&
570 password_ok(name,password,pwlen,NULL))
574 #ifdef GROUP_CHECK_PWENT
580 while (pwd = getpwent ()) {
581 if (*(pwd->pw_passwd) && pwd->pw_gid == gptr->gr_gid) {
582 /* This Entry have PASSWORD and same GID then check pwd */
583 if (password_ok(NULL, password, pwlen, pwd)) {
584 fstrcpy(tm, pwd->pw_name);
592 #endif /* GROUP_CHECK_PWENT */
601 /****************************************************************************
602 check for authority to login to a service with a given username/password
603 ****************************************************************************/
604 BOOL authorise_login(int snum,char *user,char *password, int pwlen,
605 BOOL *guest,BOOL *force,uint16 vuid)
612 DEBUG(100,("checking authorisation on user=%s pass=%s\n",user,password));
615 /* there are several possibilities:
616 1) login as the given user with given password
617 2) login as a previously registered username with the given password
618 3) login as a session list username with the given password
619 4) login as a previously validated user/password pair
620 5) login as the "user =" user with given password
621 6) login as the "user =" user with no password (guest connection)
622 7) login as guest user with no password
624 if the service is guest_only then steps 1 to 5 are skipped
627 if (GUEST_ONLY(snum)) *force = True;
629 if (!(GUEST_ONLY(snum) && GUEST_OK(snum)))
632 user_struct *vuser = get_valid_user_struct(vuid);
634 /* check the given username and password */
635 if (!ok && (*user) && user_ok(user,snum)) {
636 ok = password_ok(user,password, pwlen, NULL);
637 if (ok) DEBUG(3,("ACCEPTED: given username password ok\n"));
640 /* check for a previously registered guest username */
641 if (!ok && (vuser != 0) && vuser->guest) {
642 if (user_ok(vuser->name,snum) &&
643 password_ok(vuser->name, password, pwlen, NULL)) {
644 fstrcpy(user, vuser->name);
645 vuser->guest = False;
646 DEBUG(3,("ACCEPTED: given password with registered user %s\n", user));
652 /* now check the list of session users */
656 char *user_list = strdup(session_users);
657 if (!user_list) return(False);
659 for (auser=strtok(user_list,LIST_SEP);
661 auser = strtok(NULL,LIST_SEP))
664 fstrcpy(user2,auser);
665 if (!user_ok(user2,snum)) continue;
667 if (password_ok(user2,password, pwlen, NULL)) {
670 DEBUG(3,("ACCEPTED: session list username and given password ok\n"));
676 /* check for a previously validated username/password pair */
677 if (!ok && (!lp_revalidate(snum) || lp_security() > SEC_SHARE) &&
678 (vuser != 0) && !vuser->guest &&
679 user_ok(vuser->name,snum)) {
680 fstrcpy(user,vuser->name);
682 DEBUG(3,("ACCEPTED: validated uid ok as non-guest\n"));
686 /* check for a rhosts entry */
687 if (!ok && user_ok(user,snum) && check_hosts_equiv(user)) {
689 DEBUG(3,("ACCEPTED: hosts equiv or rhosts entry\n"));
692 /* check the user= fields and the given password */
693 if (!ok && lp_username(snum)) {
696 StrnCpy(user_list,lp_username(snum),sizeof(pstring));
698 string_sub(user_list,"%S",lp_servicename(snum));
700 for (auser=strtok(user_list,LIST_SEP);
702 auser = strtok(NULL,LIST_SEP))
706 auser = validate_group(auser+1,password,pwlen,snum);
711 DEBUG(3,("ACCEPTED: group username and given password ok\n"));
717 fstrcpy(user2,auser);
718 if (user_ok(user2,snum) &&
719 password_ok(user2,password,pwlen,NULL))
723 DEBUG(3,("ACCEPTED: user list username and given password ok\n"));
728 } /* not guest only */
730 /* check for a normal guest connection */
731 if (!ok && GUEST_OK(snum))
734 StrnCpy(guestname,lp_guestaccount(snum),sizeof(guestname)-1);
735 if (Get_Pwnam(guestname,True))
737 fstrcpy(user,guestname);
739 DEBUG(3,("ACCEPTED: guest account and guest ok\n"));
742 DEBUG(0,("Invalid guest account %s??\n",guestname));
747 if (ok && !user_ok(user,snum))
749 DEBUG(0,("rejected invalid user %s\n",user));
757 /****************************************************************************
758 read the a hosts.equiv or .rhosts file and check if it
759 allows this user from this machine
760 ****************************************************************************/
761 static BOOL check_user_equiv(char *user, char *remote, char *equiv_file)
764 int plus_allowed = 1;
767 FILE *fp = sys_fopen(equiv_file, "r");
768 DEBUG(5, ("check_user_equiv %s %s %s\n", user, remote, equiv_file));
769 if (! fp) return False;
770 while(fgets(buf, sizeof(buf), fp))
772 trim_string(buf," "," ");
774 if (buf[0] != '#' && buf[0] != '\n')
776 BOOL is_group = False;
779 if (strcmp(buf, "NO_PLUS\n") == 0)
781 DEBUG(6, ("check_user_equiv NO_PLUS\n"));
788 if (*bp == '\n' && plus_allowed)
790 /* a bare plus means everbody allowed */
791 DEBUG(6, ("check_user_equiv everybody allowed\n"));
796 else if (buf[0] == '-')
806 file_host = strtok(bp, " \t\n");
807 file_user = strtok(NULL, " \t\n");
808 DEBUG(7, ("check_user_equiv %s %s\n", file_host ? file_host : "(null)",
809 file_user ? file_user : "(null)" ));
810 if (file_host && *file_host)
812 BOOL host_ok = False;
814 #if defined(HAVE_NETGROUP) && defined(HAVE_YP_GET_DEFAULT_DOMAIN)
817 static char *mydomain = NULL;
819 yp_get_default_domain(&mydomain);
820 if (mydomain && innetgr(file_host,remote,user,mydomain))
826 DEBUG(1,("Netgroups not configured\n"));
831 /* is it this host */
832 /* the fact that remote has come from a call of gethostbyaddr
833 * means that it may have the fully qualified domain name
834 * so we could look up the file version to get it into
835 * a canonical form, but I would rather just type it
836 * in full in the equiv file
838 if (!host_ok && !is_group && strequal(remote, file_host))
844 /* is it this user */
845 if (file_user == 0 || strequal(user, file_user))
848 DEBUG(5, ("check_user_equiv matched %s%s %s\n",
849 (plus ? "+" : "-"), file_host,
850 (file_user ? file_user : "")));
851 return (plus ? True : False);
862 /****************************************************************************
863 check for a possible hosts equiv or rhosts entry for the user
864 ****************************************************************************/
865 BOOL check_hosts_equiv(char *user)
869 struct passwd *pass = Get_Pwnam(user,True);
874 fname = lp_hosts_equiv();
876 /* note: don't allow hosts.equiv on root */
877 if (fname && *fname && (pass->pw_uid != 0)) {
879 if (check_user_equiv(user,client_name(Client),fname))
885 char *home = get_home_dir(user);
888 slprintf(rhostsfile, sizeof(rhostsfile)-1, "%s/.rhosts", home);
889 if (check_user_equiv(user,client_name(Client),rhostsfile))
898 /****************************************************************************
899 return the client state structure
900 ****************************************************************************/
901 struct cli_state *server_client(void)
903 static struct cli_state pw_cli;
907 /****************************************************************************
908 support for server level security
909 ****************************************************************************/
910 struct cli_state *server_cryptkey(void)
912 if (cli_connect_serverlist(server_client(), lp_passwordserver()))
914 return server_client();
919 /****************************************************************************
920 validate a password with the password server
921 ****************************************************************************/
922 BOOL server_validate(char *user, char *domain,
923 char *pass, int passlen,
924 char *ntpass, int ntpasslen)
926 struct cli_state *cli;
927 static unsigned char badpass[24];
928 static BOOL tested_password_server = False;
929 static BOOL bad_password_server = False;
931 cli = server_client();
933 if (!cli->initialised) {
934 DEBUG(1,("password server %s is not connected\n", cli->desthost));
939 memset(badpass, 0x1f, sizeof(badpass));
941 if((passlen == sizeof(badpass)) && !memcmp(badpass, pass, passlen)) {
943 * Very unlikely, our random bad password is the same as the users
945 memset(badpass, badpass[0]+1, sizeof(badpass));
949 * Attempt a session setup with a totally incorrect password.
950 * If this succeeds with the guest bit *NOT* set then the password
951 * server is broken and is not correctly setting the guest bit. We
952 * need to detect this as some versions of NT4.x are broken. JRA.
955 if(!tested_password_server) {
956 if (cli_session_setup(cli, user, (char *)badpass, sizeof(badpass),
957 (char *)badpass, sizeof(badpass), domain)) {
960 * We connected to the password server so we
961 * can say we've tested it.
963 tested_password_server = True;
965 if ((SVAL(cli->inbuf,smb_vwv2) & 1) == 0) {
966 DEBUG(0,("server_validate: password server %s allows users as non-guest \
967 with a bad password.\n", cli->desthost));
968 DEBUG(0,("server_validate: This is broken (and insecure) behaviour. Please do not \
969 use this machine as the password server.\n"));
973 * Password server has the bug.
975 bad_password_server = True;
983 * We have already tested the password server.
984 * Fail immediately if it has the bug.
987 if(bad_password_server) {
988 DEBUG(0,("server_validate: [1] password server %s allows users as non-guest \
989 with a bad password.\n", cli->desthost));
990 DEBUG(0,("server_validate: [1] This is broken (and insecure) behaviour. Please do not \
991 use this machine as the password server.\n"));
997 * Now we know the password server will correctly set the guest bit, or is
998 * not guest enabled, we can try with the real password.
1001 if (!cli_session_setup(cli, user, pass, passlen, ntpass, ntpasslen, domain)) {
1002 DEBUG(1,("password server %s rejected the password\n", cli->desthost));
1006 /* if logged in as guest then reject */
1007 if ((SVAL(cli->inbuf,smb_vwv2) & 1) != 0) {
1008 DEBUG(1,("password server %s gave us guest only\n", cli->desthost));
1019 /***********************************************************************
1020 Do the same as security=server, but using NT Domain calls and a session
1021 key from the workstation trust account password.
1022 ************************************************************************/
1024 BOOL domain_client_validate( char *user, char *domain,
1025 char *smb_apasswd, int smb_apasslen,
1026 char *smb_ntpasswd, int smb_ntpasslen)
1028 uint16 nt_pipe_fnum;
1029 unsigned char local_challenge[8];
1030 unsigned char local_lm_response[24];
1031 unsigned char local_nt_reponse[24];
1032 unsigned char trust_passwd[16];
1033 NET_ID_INFO_CTR ctr;
1034 NET_USER_INFO_3 info3;
1035 struct cli_state cli;
1039 * Check that the requested domain is not our own machine name.
1040 * If it is, we should never check the PDC here, we use our own local
1044 if(strequal( domain, global_myname))
1046 DEBUG(3,("domain_client_validate: Requested domain was for this machine.\n"));
1051 * Next, check that the passwords given were encrypted.
1054 if(((smb_apasslen != 24) && (smb_apasslen != 0)) ||
1055 ((smb_ntpasslen != 24) && (smb_ntpasslen != 0)))
1058 * Not encrypted - do so.
1061 DEBUG(3,("domain_client_validate: User passwords not in encrypted format.\n"));
1062 generate_random_buffer( local_challenge, 8, False);
1063 SMBencrypt( (uchar *)smb_apasswd, local_challenge, local_lm_response);
1064 SMBNTencrypt((uchar *)smb_ntpasswd, local_challenge, local_nt_reponse);
1067 smb_apasswd = (char *)local_lm_response;
1068 smb_ntpasswd = (char *)local_nt_reponse;
1073 * Encrypted - get the challenge we sent for these
1077 if (!last_challenge(local_challenge))
1079 DEBUG(0,("domain_client_validate: no challenge done - password failed\n"));
1085 * Get the workstation trust account password.
1087 if (!trust_get_passwd( trust_passwd, global_myworkgroup, global_myname))
1093 * At this point, smb_apasswd points to the lanman response to
1094 * the challenge in local_challenge, and smb_ntpasswd points to
1095 * the NT response to the challenge in local_challenge. Ship
1096 * these over the secure channel to a domain controller and
1097 * see if they were valid.
1100 if (!cli_connect_serverlist(&cli, lp_passwordserver()))
1102 DEBUG(0,("domain_client_validate: Domain password server not available.\n"));
1107 * Ok - we have an anonymous connection to the IPC$ share.
1108 * Now start the NT Domain stuff :-).
1111 if(cli_nt_session_open(&cli, PIPE_NETLOGON, &nt_pipe_fnum) == False) {
1112 DEBUG(0,("domain_client_validate: unable to open the domain client session to \
1113 machine %s. Error was : %s.\n", cli.desthost, cli_errstr(&cli)));
1114 cli_nt_session_close(&cli, nt_pipe_fnum);
1120 if(cli_nt_setup_creds(&cli, nt_pipe_fnum,
1121 cli.mach_acct, trust_passwd, SEC_CHAN_WKSTA) == False)
1123 DEBUG(0,("domain_client_validate: unable to setup the PDC credentials to machine \
1124 %s. Error was : %s.\n", cli.desthost, cli_errstr(&cli)));
1125 cli_nt_session_close(&cli, nt_pipe_fnum);
1131 /* We really don't care what LUID we give the user. */
1132 generate_random_buffer( (unsigned char *)&smb_uid_low, 4, False);
1134 if (!cli_nt_login_network(&cli, nt_pipe_fnum, domain, user, smb_uid_low, (char *)local_challenge,
1135 ((smb_apasslen != 0) ? smb_apasswd : NULL),
1136 ((smb_ntpasslen != 0) ? smb_ntpasswd : NULL),
1139 DEBUG(0,("domain_client_validate: unable to validate password for user %s in domain \
1140 %s to Domain controller %s. Error was %s.\n", user, domain, cli.desthost, cli_errstr(&cli)));
1141 cli_nt_session_close(&cli, nt_pipe_fnum);
1148 * Here, if we really want it, we have lots of info about the user in info3.
1149 * LKCLXXXX - really important to check things like "is this user acct
1150 * locked out / disabled" etc!!!!
1155 * We don't actually need to do this - plus it fails currently with
1156 * NT_STATUS_INVALID_INFO_CLASS - we need to know *exactly* what to
1160 if (!cli_nt_logoff(&cli, nt_pipe_fnum, &ctr))
1162 DEBUG(0,("domain_client_validate: unable to log off user %s in domain \
1163 %s to Domain controller %s. Error was %s.\n", user, domain, cli.desthost, cli_errstr(&cli)));
1164 cli_nt_session_close(&cli, nt_pipe_fnum);
1171 cli_nt_session_close(&cli, nt_pipe_fnum);